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-rw-r--r--src/cmd/5l/5.out.h270
-rw-r--r--src/cmd/5l/Makefile43
-rw-r--r--src/cmd/5l/asm.c1878
-rw-r--r--src/cmd/5l/doc.go39
-rw-r--r--src/cmd/5l/l.h426
-rw-r--r--src/cmd/5l/list.c487
-rw-r--r--src/cmd/5l/mkenam45
-rw-r--r--src/cmd/5l/noop.c539
-rw-r--r--src/cmd/5l/obj.c744
-rw-r--r--src/cmd/5l/optab.c236
-rw-r--r--src/cmd/5l/pass.c332
-rw-r--r--src/cmd/5l/prof.c211
-rw-r--r--src/cmd/5l/softfloat.c89
-rw-r--r--src/cmd/5l/span.c885
14 files changed, 6224 insertions, 0 deletions
diff --git a/src/cmd/5l/5.out.h b/src/cmd/5l/5.out.h
new file mode 100644
index 000000000..cf86ae48b
--- /dev/null
+++ b/src/cmd/5l/5.out.h
@@ -0,0 +1,270 @@
+// Inferno utils/5c/5.out.h
+// http://code.google.com/p/inferno-os/source/browse/utils/5c/5.out.h
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#define NSNAME 8
+#define NSYM 50
+#define NREG 16
+
+#define NOPROF (1<<0)
+#define DUPOK (1<<1)
+#define NOSPLIT (1<<2)
+#define ALLTHUMBS (1<<3)
+
+#define REGRET 0
+/* -1 disables use of REGARG */
+#define REGARG -1
+/* compiler allocates R1 up as temps */
+/* compiler allocates register variables R3 up */
+#define REGEXT 10
+/* these two registers are declared in runtime.h */
+#define REGG (REGEXT-0)
+#define REGM (REGEXT-1)
+/* compiler allocates external registers R10 down */
+#define REGTMP 11
+#define REGSB 12
+#define REGSP 13
+#define REGLINK 14
+#define REGPC 15
+
+#define NFREG 8
+#define FREGRET 0
+#define FREGEXT 7
+#define FREGTMP 15
+/* compiler allocates register variables F0 up */
+/* compiler allocates external registers F7 down */
+
+enum as
+{
+ AXXX,
+
+ AAND,
+ AEOR,
+ ASUB,
+ ARSB,
+ AADD,
+ AADC,
+ ASBC,
+ ARSC,
+ ATST,
+ ATEQ,
+ ACMP,
+ ACMN,
+ AORR,
+ ABIC,
+
+ AMVN,
+
+ AB,
+ ABL,
+
+/*
+ * Do not reorder or fragment the conditional branch
+ * opcodes, or the predication code will break
+ */
+ ABEQ,
+ ABNE,
+ ABCS,
+ ABHS,
+ ABCC,
+ ABLO,
+ ABMI,
+ ABPL,
+ ABVS,
+ ABVC,
+ ABHI,
+ ABLS,
+ ABGE,
+ ABLT,
+ ABGT,
+ ABLE,
+
+ AMOVWD,
+ AMOVWF,
+ AMOVDW,
+ AMOVFW,
+ AMOVFD,
+ AMOVDF,
+ AMOVF,
+ AMOVD,
+
+ ACMPF,
+ ACMPD,
+ AADDF,
+ AADDD,
+ ASUBF,
+ ASUBD,
+ AMULF,
+ AMULD,
+ ADIVF,
+ ADIVD,
+ ASQRTF,
+ ASQRTD,
+
+ ASRL,
+ ASRA,
+ ASLL,
+ AMULU,
+ ADIVU,
+ AMUL,
+ ADIV,
+ AMOD,
+ AMODU,
+
+ AMOVB,
+ AMOVBU,
+ AMOVH,
+ AMOVHU,
+ AMOVW,
+ AMOVM,
+ ASWPBU,
+ ASWPW,
+
+ ANOP,
+ ARFE,
+ ASWI,
+ AMULA,
+
+ ADATA,
+ AGLOBL,
+ AGOK,
+ AHISTORY,
+ ANAME,
+ ARET,
+ ATEXT,
+ AWORD,
+ ADYNT_,
+ AINIT_,
+ ABCASE,
+ ACASE,
+
+ AEND,
+
+ AMULL,
+ AMULAL,
+ AMULLU,
+ AMULALU,
+
+ ABX,
+ ABXRET,
+ ADWORD,
+
+ ASIGNAME,
+
+ ALDREX,
+ ASTREX,
+
+ ALDREXD,
+ ASTREXD,
+
+ ALAST,
+};
+
+/* scond byte */
+#define C_SCOND ((1<<4)-1)
+#define C_SBIT (1<<4)
+#define C_PBIT (1<<5)
+#define C_WBIT (1<<6)
+#define C_FBIT (1<<7) /* psr flags-only */
+#define C_UBIT (1<<7) /* up bit, unsigned bit */
+
+#define C_SCOND_EQ 0
+#define C_SCOND_NE 1
+#define C_SCOND_HS 2
+#define C_SCOND_LO 3
+#define C_SCOND_MI 4
+#define C_SCOND_PL 5
+#define C_SCOND_VS 6
+#define C_SCOND_VC 7
+#define C_SCOND_HI 8
+#define C_SCOND_LS 9
+#define C_SCOND_GE 10
+#define C_SCOND_LT 11
+#define C_SCOND_GT 12
+#define C_SCOND_LE 13
+#define C_SCOND_NONE 14
+#define C_SCOND_NV 15
+
+/* D_SHIFT type */
+#define SHIFT_LL 0<<5
+#define SHIFT_LR 1<<5
+#define SHIFT_AR 2<<5
+#define SHIFT_RR 3<<5
+
+/* type/name */
+#define D_GOK 0
+#define D_NONE 1
+
+/* type */
+#define D_BRANCH (D_NONE+1)
+#define D_OREG (D_NONE+2)
+#define D_CONST (D_NONE+7)
+#define D_FCONST (D_NONE+8)
+#define D_SCONST (D_NONE+9)
+#define D_PSR (D_NONE+10)
+#define D_REG (D_NONE+12)
+#define D_FREG (D_NONE+13)
+#define D_FILE (D_NONE+16)
+#define D_OCONST (D_NONE+17)
+#define D_FILE1 (D_NONE+18)
+
+#define D_SHIFT (D_NONE+19)
+#define D_FPCR (D_NONE+20)
+#define D_REGREG (D_NONE+21)
+#define D_ADDR (D_NONE+22)
+
+#define D_SBIG (D_NONE+23)
+#define D_CONST2 (D_NONE+24)
+
+/* name */
+#define D_EXTERN (D_NONE+3)
+#define D_STATIC (D_NONE+4)
+#define D_AUTO (D_NONE+5)
+#define D_PARAM (D_NONE+6)
+
+/* internal only */
+#define D_SIZE (D_NONE+40)
+#define D_PCREL (D_NONE+41)
+
+/*
+ * this is the ranlib header
+ */
+#define SYMDEF "__.SYMDEF"
+
+/*
+ * this is the simulated IEEE floating point
+ */
+typedef struct ieee Ieee;
+struct ieee
+{
+ int32 l; /* contains ls-man 0xffffffff */
+ int32 h; /* contains sign 0x80000000
+ exp 0x7ff00000
+ ms-man 0x000fffff */
+};
diff --git a/src/cmd/5l/Makefile b/src/cmd/5l/Makefile
new file mode 100644
index 000000000..8489abc64
--- /dev/null
+++ b/src/cmd/5l/Makefile
@@ -0,0 +1,43 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include ../../Make.inc
+O:=$(HOST_O)
+
+TARG=5l
+
+OFILES=\
+ asm.$O\
+ data.$O\
+ elf.$O\
+ enam.$O\
+ ldelf.$O\
+ ldmacho.$O\
+ ldpe.$O\
+ lib.$O\
+ list.$O\
+ noop.$O\
+ obj.$O\
+ optab.$O\
+ pass.$O\
+ prof.$O\
+ softfloat.$O\
+ span.$O\
+ symtab.$O\
+ go.$O\
+
+HFILES=\
+ l.h\
+ 5.out.h\
+ ../ld/elf.h\
+
+include ../../Make.ccmd
+
+enam.c: 5.out.h
+ sh mkenam
+
+CLEANFILES+=enam.c
+
+%.$O: ../ld/%.c
+ $(HOST_CC) $(HOST_CFLAGS) -c -I. ../ld/$*.c
diff --git a/src/cmd/5l/asm.c b/src/cmd/5l/asm.c
new file mode 100644
index 000000000..5b7f6f111
--- /dev/null
+++ b/src/cmd/5l/asm.c
@@ -0,0 +1,1878 @@
+// Inferno utils/5l/asm.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/asm.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Writing object files.
+
+#include "l.h"
+#include "../ld/lib.h"
+#include "../ld/elf.h"
+
+static Prog *PP;
+
+char linuxdynld[] = "/lib/ld-linux.so.2";
+
+int32
+entryvalue(void)
+{
+ char *a;
+ Sym *s;
+
+ a = INITENTRY;
+ if(*a >= '0' && *a <= '9')
+ return atolwhex(a);
+ s = lookup(a, 0);
+ if(s->type == 0)
+ return INITTEXT;
+ if(s->type != STEXT)
+ diag("entry not text: %s", s->name);
+ return s->value;
+}
+
+enum {
+ ElfStrEmpty,
+ ElfStrInterp,
+ ElfStrHash,
+ ElfStrGot,
+ ElfStrGotPlt,
+ ElfStrDynamic,
+ ElfStrDynsym,
+ ElfStrDynstr,
+ ElfStrRel,
+ ElfStrText,
+ ElfStrData,
+ ElfStrBss,
+ ElfStrSymtab,
+ ElfStrStrtab,
+ ElfStrShstrtab,
+ ElfStrRelPlt,
+ ElfStrPlt,
+ NElfStr
+};
+
+vlong elfstr[NElfStr];
+
+static int
+needlib(char *name)
+{
+ char *p;
+ Sym *s;
+
+ if(*name == '\0')
+ return 0;
+
+ /* reuse hash code in symbol table */
+ p = smprint(".dynlib.%s", name);
+ s = lookup(p, 0);
+ if(s->type == 0) {
+ s->type = 100; // avoid SDATA, etc.
+ return 1;
+ }
+ return 0;
+}
+
+int nelfsym = 1;
+
+void
+adddynrel(Sym *s, Reloc *r)
+{
+ USED(s);
+ USED(r);
+ diag("adddynrel: unsupported binary format");
+}
+
+void
+adddynsym(Sym *s)
+{
+ USED(s);
+ diag("adddynsym: not implemented");
+}
+
+static void
+elfsetupplt(void)
+{
+ // TODO
+}
+
+int
+archreloc(Reloc *r, Sym *s, vlong *val)
+{
+ USED(r);
+ USED(s);
+ USED(val);
+ return -1;
+}
+
+void
+adddynlib(char *lib)
+{
+ Sym *s;
+
+ if(!needlib(lib))
+ return;
+
+ if(iself) {
+ s = lookup(".dynstr", 0);
+ if(s->size == 0)
+ addstring(s, "");
+ elfwritedynent(lookup(".dynamic", 0), DT_NEEDED, addstring(s, lib));
+ } else {
+ diag("adddynlib: unsupported binary format");
+ }
+}
+
+void
+doelf(void)
+{
+ Sym *s, *shstrtab, *dynstr;
+
+ if(!iself)
+ return;
+
+ /* predefine strings we need for section headers */
+ shstrtab = lookup(".shstrtab", 0);
+ shstrtab->type = SELFROSECT;
+ shstrtab->reachable = 1;
+
+ elfstr[ElfStrEmpty] = addstring(shstrtab, "");
+ elfstr[ElfStrText] = addstring(shstrtab, ".text");
+ elfstr[ElfStrData] = addstring(shstrtab, ".data");
+ elfstr[ElfStrBss] = addstring(shstrtab, ".bss");
+ addstring(shstrtab, ".rodata");
+ addstring(shstrtab, ".gosymtab");
+ addstring(shstrtab, ".gopclntab");
+ if(!debug['s']) {
+ elfstr[ElfStrSymtab] = addstring(shstrtab, ".symtab");
+ elfstr[ElfStrStrtab] = addstring(shstrtab, ".strtab");
+ }
+ elfstr[ElfStrShstrtab] = addstring(shstrtab, ".shstrtab");
+
+ if(!debug['d']) { /* -d suppresses dynamic loader format */
+ elfstr[ElfStrInterp] = addstring(shstrtab, ".interp");
+ elfstr[ElfStrHash] = addstring(shstrtab, ".hash");
+ elfstr[ElfStrGot] = addstring(shstrtab, ".got");
+ elfstr[ElfStrGotPlt] = addstring(shstrtab, ".got.plt");
+ elfstr[ElfStrDynamic] = addstring(shstrtab, ".dynamic");
+ elfstr[ElfStrDynsym] = addstring(shstrtab, ".dynsym");
+ elfstr[ElfStrDynstr] = addstring(shstrtab, ".dynstr");
+ elfstr[ElfStrRel] = addstring(shstrtab, ".rel");
+ elfstr[ElfStrRelPlt] = addstring(shstrtab, ".rel.plt");
+ elfstr[ElfStrPlt] = addstring(shstrtab, ".plt");
+
+ /* dynamic symbol table - first entry all zeros */
+ s = lookup(".dynsym", 0);
+ s->type = SELFROSECT;
+ s->reachable = 1;
+ s->value += ELF32SYMSIZE;
+
+ /* dynamic string table */
+ s = lookup(".dynstr", 0);
+ s->type = SELFROSECT;
+ s->reachable = 1;
+ if(s->size == 0)
+ addstring(s, "");
+ dynstr = s;
+
+ /* relocation table */
+ s = lookup(".rel", 0);
+ s->reachable = 1;
+ s->type = SELFROSECT;
+
+ /* global offset table */
+ s = lookup(".got", 0);
+ s->reachable = 1;
+ s->type = SELFSECT; // writable
+
+ /* hash */
+ s = lookup(".hash", 0);
+ s->reachable = 1;
+ s->type = SELFROSECT;
+
+ /* got.plt */
+ s = lookup(".got.plt", 0);
+ s->reachable = 1;
+ s->type = SELFSECT; // writable
+
+ s = lookup(".plt", 0);
+ s->reachable = 1;
+ s->type = SELFROSECT;
+
+ s = lookup(".rel.plt", 0);
+ s->reachable = 1;
+ s->type = SELFROSECT;
+
+ elfsetupplt();
+
+ /* define dynamic elf table */
+ s = lookup(".dynamic", 0);
+ s->reachable = 1;
+ s->type = SELFROSECT;
+
+ /*
+ * .dynamic table
+ */
+ elfwritedynentsym(s, DT_HASH, lookup(".hash", 0));
+ elfwritedynentsym(s, DT_SYMTAB, lookup(".dynsym", 0));
+ elfwritedynent(s, DT_SYMENT, ELF32SYMSIZE);
+ elfwritedynentsym(s, DT_STRTAB, lookup(".dynstr", 0));
+ elfwritedynentsymsize(s, DT_STRSZ, lookup(".dynstr", 0));
+ elfwritedynentsym(s, DT_REL, lookup(".rel", 0));
+ elfwritedynentsymsize(s, DT_RELSZ, lookup(".rel", 0));
+ elfwritedynent(s, DT_RELENT, ELF32RELSIZE);
+ if(rpath)
+ elfwritedynent(s, DT_RUNPATH, addstring(dynstr, rpath));
+ elfwritedynentsym(s, DT_PLTGOT, lookup(".got.plt", 0));
+ elfwritedynent(s, DT_PLTREL, DT_REL);
+ elfwritedynentsymsize(s, DT_PLTRELSZ, lookup(".rel.plt", 0));
+ elfwritedynentsym(s, DT_JMPREL, lookup(".rel.plt", 0));
+ elfwritedynent(s, DT_NULL, 0);
+ }
+}
+
+vlong
+datoff(vlong addr)
+{
+ if(addr >= segdata.vaddr)
+ return addr - segdata.vaddr + segdata.fileoff;
+ if(addr >= segtext.vaddr)
+ return addr - segtext.vaddr + segtext.fileoff;
+ diag("datoff %#x", addr);
+ return 0;
+}
+
+void
+shsym(Elf64_Shdr *sh, Sym *s)
+{
+ vlong addr;
+ addr = symaddr(s);
+ if(sh->flags&SHF_ALLOC)
+ sh->addr = addr;
+ sh->off = datoff(addr);
+ sh->size = s->size;
+}
+
+void
+phsh(Elf64_Phdr *ph, Elf64_Shdr *sh)
+{
+ ph->vaddr = sh->addr;
+ ph->paddr = ph->vaddr;
+ ph->off = sh->off;
+ ph->filesz = sh->size;
+ ph->memsz = sh->size;
+ ph->align = sh->addralign;
+}
+
+void
+asmb(void)
+{
+ int32 t;
+ int a, dynsym;
+ uint32 fo, symo, startva;
+ ElfEhdr *eh;
+ ElfPhdr *ph, *pph;
+ ElfShdr *sh;
+ Section *sect;
+ int o;
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f asmb\n", cputime());
+ Bflush(&bso);
+
+ sect = segtext.sect;
+ cseek(sect->vaddr - segtext.vaddr + segtext.fileoff);
+ codeblk(sect->vaddr, sect->len);
+
+ /* output read-only data in text segment (rodata, gosymtab and pclntab) */
+ for(sect = sect->next; sect != nil; sect = sect->next) {
+ cseek(sect->vaddr - segtext.vaddr + segtext.fileoff);
+ datblk(sect->vaddr, sect->len);
+ }
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f datblk\n", cputime());
+ Bflush(&bso);
+
+ cseek(segdata.fileoff);
+ datblk(segdata.vaddr, segdata.filelen);
+
+ /* output read-only data in text segment */
+ sect = segtext.sect->next;
+ cseek(sect->vaddr - segtext.vaddr + segtext.fileoff);
+ datblk(sect->vaddr, sect->len);
+
+ if(iself) {
+ /* index of elf text section; needed by asmelfsym, double-checked below */
+ /* !debug['d'] causes extra sections before the .text section */
+ elftextsh = 2;
+ if(!debug['d']) {
+ elftextsh += 10;
+ if(elfverneed)
+ elftextsh += 2;
+ }
+ }
+
+ /* output symbol table */
+ symsize = 0;
+ lcsize = 0;
+ symo = 0;
+ if(!debug['s']) {
+ // TODO: rationalize
+ if(debug['v'])
+ Bprint(&bso, "%5.2f sym\n", cputime());
+ Bflush(&bso);
+ switch(HEADTYPE) {
+ default:
+ if(iself)
+ goto ElfSym;
+ case Hnoheader:
+ case Hrisc:
+ case Hixp1200:
+ case Hipaq:
+ debug['s'] = 1;
+ break;
+ case Hplan9x32:
+ symo = HEADR+segtext.len+segdata.filelen;
+ break;
+ case Hnetbsd:
+ symo = rnd(segdata.filelen, 4096);
+ break;
+ ElfSym:
+ symo = rnd(HEADR+segtext.filelen, INITRND)+segdata.filelen;
+ symo = rnd(symo, INITRND);
+ break;
+ }
+ cseek(symo);
+ if(iself) {
+ if(debug['v'])
+ Bprint(&bso, "%5.2f elfsym\n", cputime());
+ asmelfsym();
+ cflush();
+ cwrite(elfstrdat, elfstrsize);
+
+ // if(debug['v'])
+ // Bprint(&bso, "%5.2f dwarf\n", cputime());
+ // dwarfemitdebugsections();
+ }
+ cflush();
+
+ }
+
+ cursym = nil;
+ if(debug['v'])
+ Bprint(&bso, "%5.2f header\n", cputime());
+ Bflush(&bso);
+ cseek(0L);
+ switch(HEADTYPE) {
+ case Hnoheader: /* no header */
+ break;
+ case Hrisc: /* aif for risc os */
+ lputl(0xe1a00000); /* NOP - decompress code */
+ lputl(0xe1a00000); /* NOP - relocation code */
+ lputl(0xeb000000 + 12); /* BL - zero init code */
+ lputl(0xeb000000 +
+ (entryvalue()
+ - INITTEXT
+ + HEADR
+ - 12
+ - 8) / 4); /* BL - entry code */
+
+ lputl(0xef000011); /* SWI - exit code */
+ lputl(textsize+HEADR); /* text size */
+ lputl(segdata.filelen); /* data size */
+ lputl(0); /* sym size */
+
+ lputl(segdata.len - segdata.filelen); /* bss size */
+ lputl(0); /* sym type */
+ lputl(INITTEXT-HEADR); /* text addr */
+ lputl(0); /* workspace - ignored */
+
+ lputl(32); /* addr mode / data addr flag */
+ lputl(0); /* data addr */
+ for(t=0; t<2; t++)
+ lputl(0); /* reserved */
+
+ for(t=0; t<15; t++)
+ lputl(0xe1a00000); /* NOP - zero init code */
+ lputl(0xe1a0f00e); /* B (R14) - zero init return */
+ break;
+ case Hplan9x32: /* plan 9 */
+ lput(0x647); /* magic */
+ lput(textsize); /* sizes */
+ lput(segdata.filelen);
+ lput(segdata.len - segdata.filelen);
+ lput(symsize); /* nsyms */
+ lput(entryvalue()); /* va of entry */
+ lput(0L);
+ lput(lcsize);
+ break;
+ case Hnetbsd: /* boot for NetBSD */
+ lput((143<<16)|0413); /* magic */
+ lputl(rnd(HEADR+textsize, 4096));
+ lputl(rnd(segdata.filelen, 4096));
+ lputl(segdata.len - segdata.filelen);
+ lputl(symsize); /* nsyms */
+ lputl(entryvalue()); /* va of entry */
+ lputl(0L);
+ lputl(0L);
+ break;
+ case Hixp1200: /* boot for IXP1200 */
+ break;
+ case Hipaq: /* boot for ipaq */
+ lputl(0xe3300000); /* nop */
+ lputl(0xe3300000); /* nop */
+ lputl(0xe3300000); /* nop */
+ lputl(0xe3300000); /* nop */
+ break;
+ case Hlinux:
+ /* elf arm */
+ eh = getElfEhdr();
+ fo = HEADR;
+ startva = INITTEXT - fo; /* va of byte 0 of file */
+
+ /* This null SHdr must appear before all others */
+ newElfShdr(elfstr[ElfStrEmpty]);
+
+ /* program header info */
+ pph = newElfPhdr();
+ pph->type = PT_PHDR;
+ pph->flags = PF_R + PF_X;
+ pph->off = eh->ehsize;
+ pph->vaddr = INITTEXT - HEADR + pph->off;
+ pph->paddr = INITTEXT - HEADR + pph->off;
+ pph->align = INITRND;
+
+ /*
+ * PHDR must be in a loaded segment. Adjust the text
+ * segment boundaries downwards to include it.
+ */
+ o = segtext.vaddr - pph->vaddr;
+ segtext.vaddr -= o;
+ segtext.len += o;
+ o = segtext.fileoff - pph->off;
+ segtext.fileoff -= o;
+ segtext.filelen += o;
+
+ if(!debug['d']) {
+ /* interpreter for dynamic linking */
+ sh = newElfShdr(elfstr[ElfStrInterp]);
+ sh->type = SHT_PROGBITS;
+ sh->flags = SHF_ALLOC;
+ sh->addralign = 1;
+ if(interpreter == nil)
+ interpreter = linuxdynld;
+ elfinterp(sh, startva, interpreter);
+
+ ph = newElfPhdr();
+ ph->type = PT_INTERP;
+ ph->flags = PF_R;
+ phsh(ph, sh);
+ }
+
+ elfphload(&segtext);
+ elfphload(&segdata);
+
+ /* Dynamic linking sections */
+ if (!debug['d']) { /* -d suppresses dynamic loader format */
+ /* S headers for dynamic linking */
+ sh = newElfShdr(elfstr[ElfStrGot]);
+ sh->type = SHT_PROGBITS;
+ sh->flags = SHF_ALLOC+SHF_WRITE;
+ sh->entsize = 4;
+ sh->addralign = 4;
+ shsym(sh, lookup(".got", 0));
+
+ sh = newElfShdr(elfstr[ElfStrGotPlt]);
+ sh->type = SHT_PROGBITS;
+ sh->flags = SHF_ALLOC+SHF_WRITE;
+ sh->entsize = 4;
+ sh->addralign = 4;
+ shsym(sh, lookup(".got.plt", 0));
+
+ dynsym = eh->shnum;
+ sh = newElfShdr(elfstr[ElfStrDynsym]);
+ sh->type = SHT_DYNSYM;
+ sh->flags = SHF_ALLOC;
+ sh->entsize = ELF32SYMSIZE;
+ sh->addralign = 4;
+ sh->link = dynsym+1; // dynstr
+ // sh->info = index of first non-local symbol (number of local symbols)
+ shsym(sh, lookup(".dynsym", 0));
+
+ sh = newElfShdr(elfstr[ElfStrDynstr]);
+ sh->type = SHT_STRTAB;
+ sh->flags = SHF_ALLOC;
+ sh->addralign = 1;
+ shsym(sh, lookup(".dynstr", 0));
+
+ sh = newElfShdr(elfstr[ElfStrHash]);
+ sh->type = SHT_HASH;
+ sh->flags = SHF_ALLOC;
+ sh->entsize = 4;
+ sh->addralign = 4;
+ sh->link = dynsym;
+ shsym(sh, lookup(".hash", 0));
+
+ sh = newElfShdr(elfstr[ElfStrRel]);
+ sh->type = SHT_REL;
+ sh->flags = SHF_ALLOC;
+ sh->entsize = ELF32RELSIZE;
+ sh->addralign = 4;
+ sh->link = dynsym;
+ shsym(sh, lookup(".rel", 0));
+
+ /* sh and PT_DYNAMIC for .dynamic section */
+ sh = newElfShdr(elfstr[ElfStrDynamic]);
+ sh->type = SHT_DYNAMIC;
+ sh->flags = SHF_ALLOC+SHF_WRITE;
+ sh->entsize = 8;
+ sh->addralign = 4;
+ sh->link = dynsym+1; // dynstr
+ shsym(sh, lookup(".dynamic", 0));
+
+ ph = newElfPhdr();
+ ph->type = PT_DYNAMIC;
+ ph->flags = PF_R + PF_W;
+ phsh(ph, sh);
+
+ /*
+ * Thread-local storage segment (really just size).
+ if(tlsoffset != 0) {
+ ph = newElfPhdr();
+ ph->type = PT_TLS;
+ ph->flags = PF_R;
+ ph->memsz = -tlsoffset;
+ ph->align = 4;
+ }
+ */
+ }
+
+ ph = newElfPhdr();
+ ph->type = PT_GNU_STACK;
+ ph->flags = PF_W+PF_R;
+ ph->align = 4;
+
+ sh = newElfShstrtab(elfstr[ElfStrShstrtab]);
+ sh->type = SHT_STRTAB;
+ sh->addralign = 1;
+ shsym(sh, lookup(".shstrtab", 0));
+
+ if(elftextsh != eh->shnum)
+ diag("elftextsh = %d, want %d", elftextsh, eh->shnum);
+ for(sect=segtext.sect; sect!=nil; sect=sect->next)
+ elfshbits(sect);
+ for(sect=segdata.sect; sect!=nil; sect=sect->next)
+ elfshbits(sect);
+
+ if (!debug['s']) {
+ sh = newElfShdr(elfstr[ElfStrSymtab]);
+ sh->type = SHT_SYMTAB;
+ sh->off = symo;
+ sh->size = symsize;
+ sh->addralign = 4;
+ sh->entsize = 16;
+ sh->link = eh->shnum; // link to strtab
+
+ sh = newElfShdr(elfstr[ElfStrStrtab]);
+ sh->type = SHT_STRTAB;
+ sh->off = symo+symsize;
+ sh->size = elfstrsize;
+ sh->addralign = 1;
+
+ // dwarfaddelfheaders();
+ }
+
+ /* Main header */
+ eh->ident[EI_MAG0] = '\177';
+ eh->ident[EI_MAG1] = 'E';
+ eh->ident[EI_MAG2] = 'L';
+ eh->ident[EI_MAG3] = 'F';
+ eh->ident[EI_CLASS] = ELFCLASS32;
+ eh->ident[EI_DATA] = ELFDATA2LSB;
+ eh->ident[EI_VERSION] = EV_CURRENT;
+
+ eh->type = ET_EXEC;
+ eh->machine = EM_ARM;
+ eh->version = EV_CURRENT;
+ eh->entry = entryvalue();
+
+ if(pph != nil) {
+ pph->filesz = eh->phnum * eh->phentsize;
+ pph->memsz = pph->filesz;
+ }
+
+ cseek(0);
+ a = 0;
+ a += elfwritehdr();
+ a += elfwritephdrs();
+ a += elfwriteshdrs();
+ cflush();
+ if(a+elfwriteinterp() > ELFRESERVE)
+ diag("ELFRESERVE too small: %d > %d", a, ELFRESERVE);
+ break;
+ }
+ cflush();
+ if(debug['c']){
+ print("textsize=%d\n", textsize);
+ print("datsize=%ulld\n", segdata.filelen);
+ print("bsssize=%ulld\n", segdata.len - segdata.filelen);
+ print("symsize=%d\n", symsize);
+ print("lcsize=%d\n", lcsize);
+ print("total=%lld\n", textsize+segdata.len+symsize+lcsize);
+ }
+}
+
+/*
+void
+cput(int32 c)
+{
+ *cbp++ = c;
+ if(--cbc <= 0)
+ cflush();
+}
+*/
+
+void
+wput(int32 l)
+{
+
+ cbp[0] = l>>8;
+ cbp[1] = l;
+ cbp += 2;
+ cbc -= 2;
+ if(cbc <= 0)
+ cflush();
+}
+
+
+void
+hput(int32 l)
+{
+
+ cbp[0] = l>>8;
+ cbp[1] = l;
+ cbp += 2;
+ cbc -= 2;
+ if(cbc <= 0)
+ cflush();
+}
+
+void
+lput(int32 l)
+{
+
+ cbp[0] = l>>24;
+ cbp[1] = l>>16;
+ cbp[2] = l>>8;
+ cbp[3] = l;
+ cbp += 4;
+ cbc -= 4;
+ if(cbc <= 0)
+ cflush();
+}
+
+void
+nopstat(char *f, Count *c)
+{
+ if(c->outof)
+ Bprint(&bso, "%s delay %d/%d (%.2f)\n", f,
+ c->outof - c->count, c->outof,
+ (double)(c->outof - c->count)/c->outof);
+}
+
+void
+asmout(Prog *p, Optab *o, int32 *out)
+{
+ int32 o1, o2, o3, o4, o5, o6, v;
+ int r, rf, rt, rt2;
+ Reloc *rel;
+
+PP = p;
+ o1 = 0;
+ o2 = 0;
+ o3 = 0;
+ o4 = 0;
+ o5 = 0;
+ o6 = 0;
+ armsize += o->size;
+if(debug['P']) print("%ux: %P type %d\n", (uint32)(p->pc), p, o->type);
+ switch(o->type) {
+ default:
+ diag("unknown asm %d", o->type);
+ prasm(p);
+ break;
+
+ case 0: /* pseudo ops */
+if(debug['G']) print("%ux: %s: arm %d\n", (uint32)(p->pc), p->from.sym->name, p->from.sym->fnptr);
+ break;
+
+ case 1: /* op R,[R],R */
+ o1 = oprrr(p->as, p->scond);
+ rf = p->from.reg;
+ rt = p->to.reg;
+ r = p->reg;
+ if(p->to.type == D_NONE)
+ rt = 0;
+ if(p->as == AMOVW || p->as == AMVN)
+ r = 0;
+ else
+ if(r == NREG)
+ r = rt;
+ o1 |= rf | (r<<16) | (rt<<12);
+ break;
+
+ case 2: /* movbu $I,[R],R */
+ aclass(&p->from);
+ o1 = oprrr(p->as, p->scond);
+ o1 |= immrot(instoffset);
+ rt = p->to.reg;
+ r = p->reg;
+ if(p->to.type == D_NONE)
+ rt = 0;
+ if(p->as == AMOVW || p->as == AMVN)
+ r = 0;
+ else if(r == NREG)
+ r = rt;
+ o1 |= (r<<16) | (rt<<12);
+ break;
+
+ case 3: /* add R<<[IR],[R],R */
+ mov:
+ aclass(&p->from);
+ o1 = oprrr(p->as, p->scond);
+ o1 |= p->from.offset;
+ rt = p->to.reg;
+ r = p->reg;
+ if(p->to.type == D_NONE)
+ rt = 0;
+ if(p->as == AMOVW || p->as == AMVN)
+ r = 0;
+ else if(r == NREG)
+ r = rt;
+ o1 |= (r<<16) | (rt<<12);
+ break;
+
+ case 4: /* add $I,[R],R */
+ aclass(&p->from);
+ o1 = oprrr(AADD, p->scond);
+ o1 |= immrot(instoffset);
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o1 |= r << 16;
+ o1 |= p->to.reg << 12;
+ break;
+
+ case 5: /* bra s */
+ v = -8;
+ if(p->cond != P)
+ v = (p->cond->pc - pc) - 8;
+ o1 = opbra(p->as, p->scond);
+ o1 |= (v >> 2) & 0xffffff;
+ break;
+
+ case 6: /* b ,O(R) -> add $O,R,PC */
+ aclass(&p->to);
+ o1 = oprrr(AADD, p->scond);
+ o1 |= immrot(instoffset);
+ o1 |= p->to.reg << 16;
+ o1 |= REGPC << 12;
+ break;
+
+ case 7: /* bl ,O(R) -> mov PC,link; add $O,R,PC */
+ aclass(&p->to);
+ o1 = oprrr(AADD, p->scond);
+ o1 |= immrot(0);
+ o1 |= REGPC << 16;
+ o1 |= REGLINK << 12;
+
+ o2 = oprrr(AADD, p->scond);
+ o2 |= immrot(instoffset);
+ o2 |= p->to.reg << 16;
+ o2 |= REGPC << 12;
+ break;
+
+ case 8: /* sll $c,[R],R -> mov (R<<$c),R */
+ aclass(&p->from);
+ o1 = oprrr(p->as, p->scond);
+ r = p->reg;
+ if(r == NREG)
+ r = p->to.reg;
+ o1 |= r;
+ o1 |= (instoffset&31) << 7;
+ o1 |= p->to.reg << 12;
+ break;
+
+ case 9: /* sll R,[R],R -> mov (R<<R),R */
+ o1 = oprrr(p->as, p->scond);
+ r = p->reg;
+ if(r == NREG)
+ r = p->to.reg;
+ o1 |= r;
+ o1 |= (p->from.reg << 8) | (1<<4);
+ o1 |= p->to.reg << 12;
+ break;
+
+ case 10: /* swi [$con] */
+ o1 = oprrr(p->as, p->scond);
+ if(p->to.type != D_NONE) {
+ aclass(&p->to);
+ o1 |= instoffset & 0xffffff;
+ }
+ break;
+
+ case 11: /* word */
+ aclass(&p->to);
+ o1 = instoffset;
+ if(p->to.sym != S) {
+ rel = addrel(cursym);
+ rel->off = pc - cursym->value;
+ rel->siz = 4;
+ rel->type = D_ADDR;
+ rel->sym = p->to.sym;
+ rel->add = p->to.offset;
+ o1 = 0;
+ }
+ break;
+
+ case 12: /* movw $lcon, reg */
+ o1 = omvl(p, &p->from, p->to.reg);
+ break;
+
+ case 13: /* op $lcon, [R], R */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+ o2 = oprrr(p->as, p->scond);
+ o2 |= REGTMP;
+ r = p->reg;
+ if(p->as == AMOVW || p->as == AMVN)
+ r = 0;
+ else if(r == NREG)
+ r = p->to.reg;
+ o2 |= r << 16;
+ if(p->to.type != D_NONE)
+ o2 |= p->to.reg << 12;
+ break;
+
+ case 14: /* movb/movbu/movh/movhu R,R */
+ o1 = oprrr(ASLL, p->scond);
+
+ if(p->as == AMOVBU || p->as == AMOVHU)
+ o2 = oprrr(ASRL, p->scond);
+ else
+ o2 = oprrr(ASRA, p->scond);
+
+ r = p->to.reg;
+ o1 |= (p->from.reg)|(r<<12);
+ o2 |= (r)|(r<<12);
+ if(p->as == AMOVB || p->as == AMOVBU) {
+ o1 |= (24<<7);
+ o2 |= (24<<7);
+ } else {
+ o1 |= (16<<7);
+ o2 |= (16<<7);
+ }
+ break;
+
+ case 15: /* mul r,[r,]r */
+ o1 = oprrr(p->as, p->scond);
+ rf = p->from.reg;
+ rt = p->to.reg;
+ r = p->reg;
+ if(r == NREG)
+ r = rt;
+ if(rt == r) {
+ r = rf;
+ rf = rt;
+ }
+ if(0)
+ if(rt == r || rf == REGPC || r == REGPC || rt == REGPC) {
+ diag("bad registers in MUL");
+ prasm(p);
+ }
+ o1 |= (rf<<8) | r | (rt<<16);
+ break;
+
+
+ case 16: /* div r,[r,]r */
+ o1 = 0xf << 28;
+ o2 = 0;
+ break;
+
+ case 17:
+ o1 = oprrr(p->as, p->scond);
+ rf = p->from.reg;
+ rt = p->to.reg;
+ rt2 = p->to.offset;
+ r = p->reg;
+ o1 |= (rf<<8) | r | (rt<<16) | (rt2<<12);
+ break;
+
+ case 20: /* mov/movb/movbu R,O(R) */
+ aclass(&p->to);
+ r = p->to.reg;
+ if(r == NREG)
+ r = o->param;
+ o1 = osr(p->as, p->from.reg, instoffset, r, p->scond);
+ break;
+
+ case 21: /* mov/movbu O(R),R -> lr */
+ aclass(&p->from);
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o1 = olr(instoffset, r, p->to.reg, p->scond);
+ if(p->as != AMOVW)
+ o1 |= 1<<22;
+ break;
+
+ case 30: /* mov/movb/movbu R,L(R) */
+ o1 = omvl(p, &p->to, REGTMP);
+ if(!o1)
+ break;
+ r = p->to.reg;
+ if(r == NREG)
+ r = o->param;
+ o2 = osrr(p->from.reg, REGTMP,r, p->scond);
+ if(p->as != AMOVW)
+ o2 |= 1<<22;
+ break;
+
+ case 31: /* mov/movbu L(R),R -> lr[b] */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o2 = olrr(REGTMP,r, p->to.reg, p->scond);
+ if(p->as == AMOVBU || p->as == AMOVB)
+ o2 |= 1<<22;
+ break;
+
+ case 34: /* mov $lacon,R */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+
+ o2 = oprrr(AADD, p->scond);
+ o2 |= REGTMP;
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o2 |= r << 16;
+ if(p->to.type != D_NONE)
+ o2 |= p->to.reg << 12;
+ break;
+
+ case 35: /* mov PSR,R */
+ o1 = (2<<23) | (0xf<<16) | (0<<0);
+ o1 |= (p->scond & C_SCOND) << 28;
+ o1 |= (p->from.reg & 1) << 22;
+ o1 |= p->to.reg << 12;
+ break;
+
+ case 36: /* mov R,PSR */
+ o1 = (2<<23) | (0x29f<<12) | (0<<4);
+ if(p->scond & C_FBIT)
+ o1 ^= 0x010 << 12;
+ o1 |= (p->scond & C_SCOND) << 28;
+ o1 |= (p->to.reg & 1) << 22;
+ o1 |= p->from.reg << 0;
+ break;
+
+ case 37: /* mov $con,PSR */
+ aclass(&p->from);
+ o1 = (2<<23) | (0x29f<<12) | (0<<4);
+ if(p->scond & C_FBIT)
+ o1 ^= 0x010 << 12;
+ o1 |= (p->scond & C_SCOND) << 28;
+ o1 |= immrot(instoffset);
+ o1 |= (p->to.reg & 1) << 22;
+ o1 |= p->from.reg << 0;
+ break;
+
+ case 38: /* movm $con,oreg -> stm */
+ o1 = (0x4 << 25);
+ o1 |= p->from.offset & 0xffff;
+ o1 |= p->to.reg << 16;
+ aclass(&p->to);
+ goto movm;
+
+ case 39: /* movm oreg,$con -> ldm */
+ o1 = (0x4 << 25) | (1 << 20);
+ o1 |= p->to.offset & 0xffff;
+ o1 |= p->from.reg << 16;
+ aclass(&p->from);
+ movm:
+ if(instoffset != 0)
+ diag("offset must be zero in MOVM");
+ o1 |= (p->scond & C_SCOND) << 28;
+ if(p->scond & C_PBIT)
+ o1 |= 1 << 24;
+ if(p->scond & C_UBIT)
+ o1 |= 1 << 23;
+ if(p->scond & C_SBIT)
+ o1 |= 1 << 22;
+ if(p->scond & C_WBIT)
+ o1 |= 1 << 21;
+ break;
+
+ case 40: /* swp oreg,reg,reg */
+ aclass(&p->from);
+ if(instoffset != 0)
+ diag("offset must be zero in SWP");
+ o1 = (0x2<<23) | (0x9<<4);
+ if(p->as != ASWPW)
+ o1 |= 1 << 22;
+ o1 |= p->from.reg << 16;
+ o1 |= p->reg << 0;
+ o1 |= p->to.reg << 12;
+ o1 |= (p->scond & C_SCOND) << 28;
+ break;
+
+ case 41: /* rfe -> movm.s.w.u 0(r13),[r15] */
+ o1 = 0xe8fd8000;
+ break;
+
+ case 50: /* floating point store */
+ v = regoff(&p->to);
+ r = p->to.reg;
+ if(r == NREG)
+ r = o->param;
+ o1 = ofsr(p->as, p->from.reg, v, r, p->scond, p);
+ break;
+
+ case 51: /* floating point load */
+ v = regoff(&p->from);
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o1 = ofsr(p->as, p->to.reg, v, r, p->scond, p) | (1<<20);
+ break;
+
+ case 52: /* floating point store, int32 offset UGLY */
+ o1 = omvl(p, &p->to, REGTMP);
+ if(!o1)
+ break;
+ r = p->to.reg;
+ if(r == NREG)
+ r = o->param;
+ o2 = oprrr(AADD, p->scond) | (REGTMP << 12) | (REGTMP << 16) | r;
+ o3 = ofsr(p->as, p->from.reg, 0, REGTMP, p->scond, p);
+ break;
+
+ case 53: /* floating point load, int32 offset UGLY */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o2 = oprrr(AADD, p->scond) | (REGTMP << 12) | (REGTMP << 16) | r;
+ o3 = ofsr(p->as, p->to.reg, 0, REGTMP, p->scond, p) | (1<<20);
+ break;
+
+ case 54: /* floating point arith */
+ o1 = oprrr(p->as, p->scond);
+ rf = p->from.reg;
+ rt = p->to.reg;
+ r = p->reg;
+ if(r == NREG) {
+ r = rt;
+ if(p->as == AMOVF || p->as == AMOVD || p->as == ASQRTF || p->as == ASQRTD)
+ r = 0;
+ }
+ o1 |= rf | (r<<16) | (rt<<12);
+ break;
+
+ case 56: /* move to FP[CS]R */
+ o1 = ((p->scond & C_SCOND) << 28) | (0xe << 24) | (1<<8) | (1<<4);
+ o1 |= ((p->to.reg+1)<<21) | (p->from.reg << 12);
+ break;
+
+ case 57: /* move from FP[CS]R */
+ o1 = ((p->scond & C_SCOND) << 28) | (0xe << 24) | (1<<8) | (1<<4);
+ o1 |= ((p->from.reg+1)<<21) | (p->to.reg<<12) | (1<<20);
+ break;
+ case 58: /* movbu R,R */
+ o1 = oprrr(AAND, p->scond);
+ o1 |= immrot(0xff);
+ rt = p->to.reg;
+ r = p->from.reg;
+ if(p->to.type == D_NONE)
+ rt = 0;
+ if(r == NREG)
+ r = rt;
+ o1 |= (r<<16) | (rt<<12);
+ break;
+
+ case 59: /* movw/bu R<<I(R),R -> ldr indexed */
+ if(p->from.reg == NREG) {
+ if(p->as != AMOVW)
+ diag("byte MOV from shifter operand");
+ goto mov;
+ }
+ if(p->from.offset&(1<<4))
+ diag("bad shift in LDR");
+ o1 = olrr(p->from.offset, p->from.reg, p->to.reg, p->scond);
+ if(p->as == AMOVBU)
+ o1 |= 1<<22;
+ break;
+
+ case 60: /* movb R(R),R -> ldrsb indexed */
+ if(p->from.reg == NREG) {
+ diag("byte MOV from shifter operand");
+ goto mov;
+ }
+ if(p->from.offset&(~0xf))
+ diag("bad shift in LDRSB");
+ o1 = olhrr(p->from.offset, p->from.reg, p->to.reg, p->scond);
+ o1 ^= (1<<5)|(1<<6);
+ break;
+
+ case 61: /* movw/b/bu R,R<<[IR](R) -> str indexed */
+ if(p->to.reg == NREG)
+ diag("MOV to shifter operand");
+ o1 = osrr(p->from.reg, p->to.offset, p->to.reg, p->scond);
+ if(p->as == AMOVB || p->as == AMOVBU)
+ o1 |= 1<<22;
+ break;
+
+ case 62: /* case R -> movw R<<2(PC),PC */
+ o1 = olrr(p->from.reg, REGPC, REGPC, p->scond);
+ o1 |= 2<<7;
+ break;
+
+ case 63: /* bcase */
+ if(p->cond != P)
+ o1 = p->cond->pc;
+ break;
+
+ /* reloc ops */
+ case 64: /* mov/movb/movbu R,addr */
+ o1 = omvl(p, &p->to, REGTMP);
+ if(!o1)
+ break;
+ o2 = osr(p->as, p->from.reg, 0, REGTMP, p->scond);
+ break;
+
+ case 65: /* mov/movbu addr,R */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+ o2 = olr(0, REGTMP, p->to.reg, p->scond);
+ if(p->as == AMOVBU || p->as == AMOVB)
+ o2 |= 1<<22;
+ break;
+
+ case 68: /* floating point store -> ADDR */
+ o1 = omvl(p, &p->to, REGTMP);
+ if(!o1)
+ break;
+ o2 = ofsr(p->as, p->from.reg, 0, REGTMP, p->scond, p);
+ break;
+
+ case 69: /* floating point load <- ADDR */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+ o2 = ofsr(p->as, p->to.reg, 0, REGTMP, p->scond, p) | (1<<20);
+ break;
+
+ /* ArmV4 ops: */
+ case 70: /* movh/movhu R,O(R) -> strh */
+ aclass(&p->to);
+ r = p->to.reg;
+ if(r == NREG)
+ r = o->param;
+ o1 = oshr(p->from.reg, instoffset, r, p->scond);
+ break;
+ case 71: /* movb/movh/movhu O(R),R -> ldrsb/ldrsh/ldrh */
+ aclass(&p->from);
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o1 = olhr(instoffset, r, p->to.reg, p->scond);
+ if(p->as == AMOVB)
+ o1 ^= (1<<5)|(1<<6);
+ else if(p->as == AMOVH)
+ o1 ^= (1<<6);
+ break;
+ case 72: /* movh/movhu R,L(R) -> strh */
+ o1 = omvl(p, &p->to, REGTMP);
+ if(!o1)
+ break;
+ r = p->to.reg;
+ if(r == NREG)
+ r = o->param;
+ o2 = oshrr(p->from.reg, REGTMP,r, p->scond);
+ break;
+ case 73: /* movb/movh/movhu L(R),R -> ldrsb/ldrsh/ldrh */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+ r = p->from.reg;
+ if(r == NREG)
+ r = o->param;
+ o2 = olhrr(REGTMP, r, p->to.reg, p->scond);
+ if(p->as == AMOVB)
+ o2 ^= (1<<5)|(1<<6);
+ else if(p->as == AMOVH)
+ o2 ^= (1<<6);
+ break;
+ case 74: /* bx $I */
+ diag("ABX $I");
+ break;
+ case 75: /* bx O(R) */
+ aclass(&p->to);
+ if(instoffset != 0)
+ diag("non-zero offset in ABX");
+/*
+ o1 = oprrr(AADD, p->scond) | immrot(0) | (REGPC<<16) | (REGLINK<<12); // mov PC, LR
+ o2 = ((p->scond&C_SCOND)<<28) | (0x12fff<<8) | (1<<4) | p->to.reg; // BX R
+*/
+ // p->to.reg may be REGLINK
+ o1 = oprrr(AADD, p->scond);
+ o1 |= immrot(instoffset);
+ o1 |= p->to.reg << 16;
+ o1 |= REGTMP << 12;
+ o2 = oprrr(AADD, p->scond) | immrot(0) | (REGPC<<16) | (REGLINK<<12); // mov PC, LR
+ o3 = ((p->scond&C_SCOND)<<28) | (0x12fff<<8) | (1<<4) | REGTMP; // BX Rtmp
+ break;
+ case 76: /* bx O(R) when returning from fn*/
+ diag("ABXRET");
+ break;
+ case 77: /* ldrex oreg,reg */
+ aclass(&p->from);
+ if(instoffset != 0)
+ diag("offset must be zero in LDREX");
+ o1 = (0x19<<20) | (0xf9f);
+ o1 |= p->from.reg << 16;
+ o1 |= p->to.reg << 12;
+ o1 |= (p->scond & C_SCOND) << 28;
+ break;
+ case 78: /* strex reg,oreg,reg */
+ aclass(&p->from);
+ if(instoffset != 0)
+ diag("offset must be zero in STREX");
+ o1 = (0x18<<20) | (0xf90);
+ o1 |= p->from.reg << 16;
+ o1 |= p->reg << 0;
+ o1 |= p->to.reg << 12;
+ o1 |= (p->scond & C_SCOND) << 28;
+ break;
+ case 80: /* fmov zfcon,freg */
+ if(p->as == AMOVD) {
+ o1 = 0xeeb00b00; // VMOV imm 64
+ o2 = oprrr(ASUBD, p->scond);
+ } else {
+ o1 = 0x0eb00a00; // VMOV imm 32
+ o2 = oprrr(ASUBF, p->scond);
+ }
+ v = 0x70; // 1.0
+ r = p->to.reg;
+
+ // movf $1.0, r
+ o1 |= (p->scond & C_SCOND) << 28;
+ o1 |= r << 12;
+ o1 |= (v&0xf) << 0;
+ o1 |= (v&0xf0) << 12;
+
+ // subf r,r,r
+ o2 |= r | (r<<16) | (r<<12);
+ break;
+ case 81: /* fmov sfcon,freg */
+ o1 = 0x0eb00a00; // VMOV imm 32
+ if(p->as == AMOVD)
+ o1 = 0xeeb00b00; // VMOV imm 64
+ o1 |= (p->scond & C_SCOND) << 28;
+ o1 |= p->to.reg << 12;
+ v = chipfloat(&p->from.ieee);
+ o1 |= (v&0xf) << 0;
+ o1 |= (v&0xf0) << 12;
+ break;
+ case 82: /* fcmp freg,freg, */
+ o1 = oprrr(p->as, p->scond);
+ o1 |= (p->reg<<12) | (p->from.reg<<0);
+ o2 = 0x0ef1fa10; // VMRS R15
+ o2 |= (p->scond & C_SCOND) << 28;
+ break;
+ case 83: /* fcmp freg,, */
+ o1 = oprrr(p->as, p->scond);
+ o1 |= (p->from.reg<<12) | (1<<16);
+ o2 = 0x0ef1fa10; // VMRS R15
+ o2 |= (p->scond & C_SCOND) << 28;
+ break;
+ case 84: /* movfw freg,freg - truncate float-to-fix */
+ o1 = oprrr(p->as, p->scond);
+ o1 |= (p->from.reg<<0);
+ o1 |= (p->to.reg<<12);
+ break;
+ case 85: /* movwf freg,freg - fix-to-float */
+ o1 = oprrr(p->as, p->scond);
+ o1 |= (p->from.reg<<0);
+ o1 |= (p->to.reg<<12);
+ break;
+ case 86: /* movfw freg,reg - truncate float-to-fix */
+ // macro for movfw freg,FTMP; movw FTMP,reg
+ o1 = oprrr(p->as, p->scond);
+ o1 |= (p->from.reg<<0);
+ o1 |= (FREGTMP<<12);
+ o2 = oprrr(AMOVFW+AEND, p->scond);
+ o2 |= (FREGTMP<<16);
+ o2 |= (p->to.reg<<12);
+ break;
+ case 87: /* movwf reg,freg - fix-to-float */
+ // macro for movw reg,FTMP; movwf FTMP,freg
+ o1 = oprrr(AMOVWF+AEND, p->scond);
+ o1 |= (p->from.reg<<12);
+ o1 |= (FREGTMP<<16);
+ o2 = oprrr(p->as, p->scond);
+ o2 |= (FREGTMP<<0);
+ o2 |= (p->to.reg<<12);
+ break;
+ case 88: /* movw reg,freg */
+ o1 = oprrr(AMOVWF+AEND, p->scond);
+ o1 |= (p->from.reg<<12);
+ o1 |= (p->to.reg<<16);
+ break;
+ case 89: /* movw freg,reg */
+ o1 = oprrr(AMOVFW+AEND, p->scond);
+ o1 |= (p->from.reg<<16);
+ o1 |= (p->to.reg<<12);
+ break;
+ case 90: /* tst reg */
+ o1 = oprrr(ACMP+AEND, p->scond);
+ o1 |= p->from.reg<<16;
+ break;
+ case 91: /* ldrexd oreg,reg */
+ aclass(&p->from);
+ if(instoffset != 0)
+ diag("offset must be zero in LDREX");
+ o1 = (0x1b<<20) | (0xf9f);
+ o1 |= p->from.reg << 16;
+ o1 |= p->to.reg << 12;
+ o1 |= (p->scond & C_SCOND) << 28;
+ break;
+ case 92: /* strexd reg,oreg,reg */
+ aclass(&p->from);
+ if(instoffset != 0)
+ diag("offset must be zero in STREX");
+ o1 = (0x1a<<20) | (0xf90);
+ o1 |= p->from.reg << 16;
+ o1 |= p->reg << 0;
+ o1 |= p->to.reg << 12;
+ o1 |= (p->scond & C_SCOND) << 28;
+ break;
+ case 93: /* movb/movh/movhu addr,R -> ldrsb/ldrsh/ldrh */
+ o1 = omvl(p, &p->from, REGTMP);
+ if(!o1)
+ break;
+ o2 = olhr(0, REGTMP, p->to.reg, p->scond);
+ if(p->as == AMOVB)
+ o2 ^= (1<<5)|(1<<6);
+ else if(p->as == AMOVH)
+ o2 ^= (1<<6);
+ break;
+ case 94: /* movh/movhu R,addr -> strh */
+ o1 = omvl(p, &p->to, REGTMP);
+ if(!o1)
+ break;
+ o2 = oshr(p->from.reg, 0, REGTMP, p->scond);
+ break;
+ }
+
+ out[0] = o1;
+ out[1] = o2;
+ out[2] = o3;
+ out[3] = o4;
+ out[4] = o5;
+ out[5] = o6;
+ return;
+
+#ifdef NOTDEF
+ v = p->pc;
+ switch(o->size) {
+ default:
+ if(debug['a'])
+ Bprint(&bso, " %.8ux:\t\t%P\n", v, p);
+ break;
+ case 4:
+ if(debug['a'])
+ Bprint(&bso, " %.8ux: %.8ux\t%P\n", v, o1, p);
+ lputl(o1);
+ break;
+ case 8:
+ if(debug['a'])
+ Bprint(&bso, " %.8ux: %.8ux %.8ux%P\n", v, o1, o2, p);
+ lputl(o1);
+ lputl(o2);
+ break;
+ case 12:
+ if(debug['a'])
+ Bprint(&bso, " %.8ux: %.8ux %.8ux %.8ux%P\n", v, o1, o2, o3, p);
+ lputl(o1);
+ lputl(o2);
+ lputl(o3);
+ break;
+ case 16:
+ if(debug['a'])
+ Bprint(&bso, " %.8ux: %.8ux %.8ux %.8ux %.8ux%P\n",
+ v, o1, o2, o3, o4, p);
+ lputl(o1);
+ lputl(o2);
+ lputl(o3);
+ lputl(o4);
+ break;
+ case 20:
+ if(debug['a'])
+ Bprint(&bso, " %.8ux: %.8ux %.8ux %.8ux %.8ux %.8ux%P\n",
+ v, o1, o2, o3, o4, o5, p);
+ lputl(o1);
+ lputl(o2);
+ lputl(o3);
+ lputl(o4);
+ lputl(o5);
+ break;
+ case 24:
+ if(debug['a'])
+ Bprint(&bso, " %.8ux: %.8ux %.8ux %.8ux %.8ux %.8ux %.8ux%P\n",
+ v, o1, o2, o3, o4, o5, o6, p);
+ lputl(o1);
+ lputl(o2);
+ lputl(o3);
+ lputl(o4);
+ lputl(o5);
+ lputl(o6);
+ break;
+ }
+#endif
+}
+
+int32
+oprrr(int a, int sc)
+{
+ int32 o;
+
+ o = (sc & C_SCOND) << 28;
+ if(sc & C_SBIT)
+ o |= 1 << 20;
+ if(sc & (C_PBIT|C_WBIT))
+ diag(".P/.W on dp instruction");
+ switch(a) {
+ case AMULU:
+ case AMUL: return o | (0x0<<21) | (0x9<<4);
+ case AMULA: return o | (0x1<<21) | (0x9<<4);
+ case AMULLU: return o | (0x4<<21) | (0x9<<4);
+ case AMULL: return o | (0x6<<21) | (0x9<<4);
+ case AMULALU: return o | (0x5<<21) | (0x9<<4);
+ case AMULAL: return o | (0x7<<21) | (0x9<<4);
+ case AAND: return o | (0x0<<21);
+ case AEOR: return o | (0x1<<21);
+ case ASUB: return o | (0x2<<21);
+ case ARSB: return o | (0x3<<21);
+ case AADD: return o | (0x4<<21);
+ case AADC: return o | (0x5<<21);
+ case ASBC: return o | (0x6<<21);
+ case ARSC: return o | (0x7<<21);
+ case ATST: return o | (0x8<<21) | (1<<20);
+ case ATEQ: return o | (0x9<<21) | (1<<20);
+ case ACMP: return o | (0xa<<21) | (1<<20);
+ case ACMN: return o | (0xb<<21) | (1<<20);
+ case AORR: return o | (0xc<<21);
+ case AMOVW: return o | (0xd<<21);
+ case ABIC: return o | (0xe<<21);
+ case AMVN: return o | (0xf<<21);
+ case ASLL: return o | (0xd<<21) | (0<<5);
+ case ASRL: return o | (0xd<<21) | (1<<5);
+ case ASRA: return o | (0xd<<21) | (2<<5);
+ case ASWI: return o | (0xf<<24);
+
+ case AADDD: return o | (0xe<<24) | (0x3<<20) | (0xb<<8) | (0<<4);
+ case AADDF: return o | (0xe<<24) | (0x3<<20) | (0xa<<8) | (0<<4);
+ case ASUBD: return o | (0xe<<24) | (0x3<<20) | (0xb<<8) | (4<<4);
+ case ASUBF: return o | (0xe<<24) | (0x3<<20) | (0xa<<8) | (4<<4);
+ case AMULD: return o | (0xe<<24) | (0x2<<20) | (0xb<<8) | (0<<4);
+ case AMULF: return o | (0xe<<24) | (0x2<<20) | (0xa<<8) | (0<<4);
+ case ADIVD: return o | (0xe<<24) | (0x8<<20) | (0xb<<8) | (0<<4);
+ case ADIVF: return o | (0xe<<24) | (0x8<<20) | (0xa<<8) | (0<<4);
+ case ASQRTD: return o | (0xe<<24) | (0xb<<20) | (1<<16) | (0xb<<8) | (0xc<<4);
+ case ASQRTF: return o | (0xe<<24) | (0xb<<20) | (1<<16) | (0xa<<8) | (0xc<<4);
+ case ACMPD: return o | (0xe<<24) | (0xb<<20) | (4<<16) | (0xb<<8) | (0xc<<4);
+ case ACMPF: return o | (0xe<<24) | (0xb<<20) | (4<<16) | (0xa<<8) | (0xc<<4);
+
+ case AMOVF: return o | (0xe<<24) | (0xb<<20) | (0<<16) | (0xa<<8) | (4<<4);
+ case AMOVD: return o | (0xe<<24) | (0xb<<20) | (0<<16) | (0xb<<8) | (4<<4);
+
+ case AMOVDF: return o | (0xe<<24) | (0xb<<20) | (7<<16) | (0xa<<8) | (0xc<<4) |
+ (1<<8); // dtof
+ case AMOVFD: return o | (0xe<<24) | (0xb<<20) | (7<<16) | (0xa<<8) | (0xc<<4) |
+ (0<<8); // dtof
+
+ case AMOVWF:
+ if((sc & C_UBIT) == 0)
+ o |= 1<<7; /* signed */
+ return o | (0xe<<24) | (0xb<<20) | (8<<16) | (0xa<<8) | (4<<4) |
+ (0<<18) | (0<<8); // toint, double
+ case AMOVWD:
+ if((sc & C_UBIT) == 0)
+ o |= 1<<7; /* signed */
+ return o | (0xe<<24) | (0xb<<20) | (8<<16) | (0xa<<8) | (4<<4) |
+ (0<<18) | (1<<8); // toint, double
+
+ case AMOVFW:
+ if((sc & C_UBIT) == 0)
+ o |= 1<<16; /* signed */
+ return o | (0xe<<24) | (0xb<<20) | (8<<16) | (0xa<<8) | (4<<4) |
+ (1<<18) | (0<<8) | (1<<7); // toint, double, trunc
+ case AMOVDW:
+ if((sc & C_UBIT) == 0)
+ o |= 1<<16; /* signed */
+ return o | (0xe<<24) | (0xb<<20) | (8<<16) | (0xa<<8) | (4<<4) |
+ (1<<18) | (1<<8) | (1<<7); // toint, double, trunc
+
+ case AMOVWF+AEND: // copy WtoF
+ return o | (0xe<<24) | (0x0<<20) | (0xb<<8) | (1<<4);
+ case AMOVFW+AEND: // copy FtoW
+ return o | (0xe<<24) | (0x1<<20) | (0xb<<8) | (1<<4);
+ case ACMP+AEND: // cmp imm
+ return o | (0x3<<24) | (0x5<<20);
+ }
+ diag("bad rrr %d", a);
+ prasm(curp);
+ return 0;
+}
+
+int32
+opbra(int a, int sc)
+{
+
+ if(sc & (C_SBIT|C_PBIT|C_WBIT))
+ diag(".S/.P/.W on bra instruction");
+ sc &= C_SCOND;
+ if(a == ABL)
+ return (sc<<28)|(0x5<<25)|(0x1<<24);
+ if(sc != 0xe)
+ diag(".COND on bcond instruction");
+ switch(a) {
+ case ABEQ: return (0x0<<28)|(0x5<<25);
+ case ABNE: return (0x1<<28)|(0x5<<25);
+ case ABCS: return (0x2<<28)|(0x5<<25);
+ case ABHS: return (0x2<<28)|(0x5<<25);
+ case ABCC: return (0x3<<28)|(0x5<<25);
+ case ABLO: return (0x3<<28)|(0x5<<25);
+ case ABMI: return (0x4<<28)|(0x5<<25);
+ case ABPL: return (0x5<<28)|(0x5<<25);
+ case ABVS: return (0x6<<28)|(0x5<<25);
+ case ABVC: return (0x7<<28)|(0x5<<25);
+ case ABHI: return (0x8<<28)|(0x5<<25);
+ case ABLS: return (0x9<<28)|(0x5<<25);
+ case ABGE: return (0xa<<28)|(0x5<<25);
+ case ABLT: return (0xb<<28)|(0x5<<25);
+ case ABGT: return (0xc<<28)|(0x5<<25);
+ case ABLE: return (0xd<<28)|(0x5<<25);
+ case AB: return (0xe<<28)|(0x5<<25);
+ }
+ diag("bad bra %A", a);
+ prasm(curp);
+ return 0;
+}
+
+int32
+olr(int32 v, int b, int r, int sc)
+{
+ int32 o;
+
+ if(sc & C_SBIT)
+ diag(".S on LDR/STR instruction");
+ o = (sc & C_SCOND) << 28;
+ if(!(sc & C_PBIT))
+ o |= 1 << 24;
+ if(!(sc & C_UBIT))
+ o |= 1 << 23;
+ if(sc & C_WBIT)
+ o |= 1 << 21;
+ o |= (1<<26) | (1<<20);
+ if(v < 0) {
+ if(sc & C_UBIT) diag(".U on neg offset");
+ v = -v;
+ o ^= 1 << 23;
+ }
+ if(v >= (1<<12) || v < 0)
+ diag("literal span too large: %d (R%d)\n%P", v, b, PP);
+ o |= v;
+ o |= b << 16;
+ o |= r << 12;
+ return o;
+}
+
+int32
+olhr(int32 v, int b, int r, int sc)
+{
+ int32 o;
+
+ if(sc & C_SBIT)
+ diag(".S on LDRH/STRH instruction");
+ o = (sc & C_SCOND) << 28;
+ if(!(sc & C_PBIT))
+ o |= 1 << 24;
+ if(sc & C_WBIT)
+ o |= 1 << 21;
+ o |= (1<<23) | (1<<20)|(0xb<<4);
+ if(v < 0) {
+ v = -v;
+ o ^= 1 << 23;
+ }
+ if(v >= (1<<8) || v < 0)
+ diag("literal span too large: %d (R%d)\n%P", v, b, PP);
+ o |= (v&0xf)|((v>>4)<<8)|(1<<22);
+ o |= b << 16;
+ o |= r << 12;
+ return o;
+}
+
+int32
+osr(int a, int r, int32 v, int b, int sc)
+{
+ int32 o;
+
+ o = olr(v, b, r, sc) ^ (1<<20);
+ if(a != AMOVW)
+ o |= 1<<22;
+ return o;
+}
+
+int32
+oshr(int r, int32 v, int b, int sc)
+{
+ int32 o;
+
+ o = olhr(v, b, r, sc) ^ (1<<20);
+ return o;
+}
+
+
+int32
+osrr(int r, int i, int b, int sc)
+{
+
+ return olr(i, b, r, sc) ^ ((1<<25) | (1<<20));
+}
+
+int32
+oshrr(int r, int i, int b, int sc)
+{
+ return olhr(i, b, r, sc) ^ ((1<<22) | (1<<20));
+}
+
+int32
+olrr(int i, int b, int r, int sc)
+{
+
+ return olr(i, b, r, sc) ^ (1<<25);
+}
+
+int32
+olhrr(int i, int b, int r, int sc)
+{
+ return olhr(i, b, r, sc) ^ (1<<22);
+}
+
+int32
+ofsr(int a, int r, int32 v, int b, int sc, Prog *p)
+{
+ int32 o;
+
+ if(sc & C_SBIT)
+ diag(".S on FLDR/FSTR instruction");
+ o = (sc & C_SCOND) << 28;
+ if(!(sc & C_PBIT))
+ o |= 1 << 24;
+ if(sc & C_WBIT)
+ o |= 1 << 21;
+ o |= (6<<25) | (1<<24) | (1<<23) | (10<<8);
+ if(v < 0) {
+ v = -v;
+ o ^= 1 << 23;
+ }
+ if(v & 3)
+ diag("odd offset for floating point op: %d\n%P", v, p);
+ else
+ if(v >= (1<<10) || v < 0)
+ diag("literal span too large: %d\n%P", v, p);
+ o |= (v>>2) & 0xFF;
+ o |= b << 16;
+ o |= r << 12;
+
+ switch(a) {
+ default:
+ diag("bad fst %A", a);
+ case AMOVD:
+ o |= 1 << 8;
+ case AMOVF:
+ break;
+ }
+ return o;
+}
+
+int32
+omvl(Prog *p, Adr *a, int dr)
+{
+ int32 v, o1;
+ if(!p->cond) {
+ aclass(a);
+ v = immrot(~instoffset);
+ if(v == 0) {
+ diag("missing literal");
+ prasm(p);
+ return 0;
+ }
+ o1 = oprrr(AMVN, p->scond&C_SCOND);
+ o1 |= v;
+ o1 |= dr << 12;
+ } else {
+ v = p->cond->pc - p->pc - 8;
+ o1 = olr(v, REGPC, dr, p->scond&C_SCOND);
+ }
+ return o1;
+}
+
+int
+chipzero(Ieee *e)
+{
+ if(e->l != 0 || e->h != 0)
+ return -1;
+ return 0;
+}
+
+int
+chipfloat(Ieee *e)
+{
+ int n;
+ ulong h;
+
+ if(e->l != 0 || (e->h&0xffff) != 0)
+ goto no;
+ h = e->h & 0x7fc00000;
+ if(h != 0x40000000 && h != 0x3fc00000)
+ goto no;
+ n = 0;
+
+ // sign bit (a)
+ if(e->h & 0x80000000)
+ n |= 1<<7;
+
+ // exp sign bit (b)
+ if(h == 0x3fc00000)
+ n |= 1<<6;
+
+ // rest of exp and mantissa (cd-efgh)
+ n |= (e->h >> 16) & 0x3f;
+
+//print("match %.8lux %.8lux %d\n", e->l, e->h, n);
+ return n;
+
+no:
+ return -1;
+}
+
+
+void
+genasmsym(void (*put)(Sym*, char*, int, vlong, vlong, int, Sym*))
+{
+ Auto *a;
+ Sym *s;
+ int h;
+
+ s = lookup("etext", 0);
+ if(s->type == STEXT)
+ put(s, s->name, 'T', s->value, s->size, s->version, 0);
+
+ for(h=0; h<NHASH; h++) {
+ for(s=hash[h]; s!=S; s=s->hash) {
+ if(s->hide)
+ continue;
+ switch(s->type) {
+ case SCONST:
+ case SRODATA:
+ case SDATA:
+ case SELFROSECT:
+ case STYPE:
+ case SSTRING:
+ case SGOSTRING:
+ if(!s->reachable)
+ continue;
+ put(s, s->name, 'D', s->value, s->size, s->version, s->gotype);
+ continue;
+
+ case SBSS:
+ if(!s->reachable)
+ continue;
+ put(s, s->name, 'B', s->value, s->size, s->version, s->gotype);
+ continue;
+
+ case SFILE:
+ put(nil, s->name, 'f', s->value, 0, s->version, 0);
+ continue;
+ }
+ }
+ }
+
+ for(s = textp; s != nil; s = s->next) {
+ /* filenames first */
+ for(a=s->autom; a; a=a->link)
+ if(a->type == D_FILE)
+ put(nil, a->asym->name, 'z', a->aoffset, 0, 0, 0);
+ else
+ if(a->type == D_FILE1)
+ put(nil, a->asym->name, 'Z', a->aoffset, 0, 0, 0);
+
+ put(s, s->name, 'T', s->value, s->size, s->version, s->gotype);
+
+ /* frame, auto and param after */
+ put(nil, ".frame", 'm', s->text->to.offset+4, 0, 0, 0);
+
+ for(a=s->autom; a; a=a->link)
+ if(a->type == D_AUTO)
+ put(nil, a->asym->name, 'a', -a->aoffset, 0, 0, a->gotype);
+ else
+ if(a->type == D_PARAM)
+ put(nil, a->asym->name, 'p', a->aoffset, 0, 0, a->gotype);
+ }
+ if(debug['v'] || debug['n'])
+ Bprint(&bso, "symsize = %ud\n", symsize);
+ Bflush(&bso);
+}
+
+void
+setpersrc(Sym *s)
+{
+ USED(s);
+}
diff --git a/src/cmd/5l/doc.go b/src/cmd/5l/doc.go
new file mode 100644
index 000000000..aa7ccebfc
--- /dev/null
+++ b/src/cmd/5l/doc.go
@@ -0,0 +1,39 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+
+5l is a modified version of the Plan 9 linker. The original is documented at
+
+ http://plan9.bell-labs.com/magic/man2html/1/2l
+
+Its target architecture is the ARM, referred to by these tools as arm.
+It reads files in .5 format generated by 5g, 5c, and 5a and emits
+a binary called 5.out by default.
+
+Major changes include:
+ - support for segmented stacks (this feature is implemented here, not in the compilers).
+
+
+Original options are listed in the link above.
+
+Options new in this version:
+
+-F
+ Force use of software floating point.
+ Also implied by setting GOARM=5 in the environment.
+-Hlinux
+ Write Linux ELF binaries (default when $GOOS is linux)
+-I interpreter
+ Set the ELF dynamic linker to use.
+-L dir1 -L dir2
+ Search for libraries (package files) in dir1, dir2, etc.
+ The default is the single location $GOROOT/pkg/$GOOS_arm.
+-r dir1:dir2:...
+ Set the dynamic linker search path when using ELF.
+-V
+ Print the linker version.
+
+*/
+package documentation
diff --git a/src/cmd/5l/l.h b/src/cmd/5l/l.h
new file mode 100644
index 000000000..dabe93d37
--- /dev/null
+++ b/src/cmd/5l/l.h
@@ -0,0 +1,426 @@
+// Inferno utils/5l/l.h
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/l.h
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include "5.out.h"
+
+enum
+{
+ thechar = '5',
+ PtrSize = 4
+};
+
+#ifndef EXTERN
+#define EXTERN extern
+#endif
+
+/* do not undefine this - code will be removed eventually */
+#define CALLEEBX
+
+#define dynptrsize 0
+
+typedef struct Adr Adr;
+typedef struct Sym Sym;
+typedef struct Autom Auto;
+typedef struct Prog Prog;
+typedef struct Reloc Reloc;
+typedef struct Optab Optab;
+typedef struct Oprang Oprang;
+typedef uchar Opcross[32][2][32];
+typedef struct Count Count;
+
+#define P ((Prog*)0)
+#define S ((Sym*)0)
+#define TNAME (cursym?cursym->name:noname)
+
+struct Adr
+{
+ union
+ {
+ int32 u0offset;
+ char* u0sval;
+ Ieee u0ieee;
+ char* u0sbig;
+ } u0;
+ Sym* sym;
+ char type;
+ uchar index; // not used on arm, required by ld/go.c
+ char reg;
+ char name;
+ int32 offset2; // argsize
+ char class;
+ Sym* gotype;
+};
+
+#define offset u0.u0offset
+#define sval u0.u0sval
+#define scon sval
+#define ieee u0.u0ieee
+#define sbig u0.u0sbig
+
+struct Reloc
+{
+ int32 off;
+ uchar siz;
+ int16 type;
+ int32 add;
+ Sym* sym;
+};
+
+struct Prog
+{
+ Adr from;
+ Adr to;
+ union
+ {
+ int32 u0regused;
+ Prog* u0forwd;
+ } u0;
+ Prog* cond;
+ Prog* link;
+ Prog* dlink;
+ int32 pc;
+ int32 line;
+ int32 spadj;
+ uchar mark;
+ uchar optab;
+ uchar as;
+ uchar scond;
+ uchar reg;
+ uchar align;
+};
+
+#define regused u0.u0regused
+#define forwd u0.u0forwd
+#define datasize reg
+#define textflag reg
+
+#define iscall(p) ((p)->as == ABL)
+
+struct Sym
+{
+ char* name;
+ short type;
+ short version;
+ uchar dupok;
+ uchar reachable;
+ uchar dynexport;
+ uchar leaf;
+ uchar stkcheck;
+ uchar hide;
+ int32 dynid;
+ int32 plt;
+ int32 got;
+ int32 value;
+ int32 sig;
+ int32 size;
+ uchar special;
+ uchar fnptr; // used as fn ptr
+ Sym* hash; // in hash table
+ Sym* allsym; // in all symbol list
+ Sym* next; // in text or data list
+ Sym* sub; // in SSUB list
+ Sym* outer; // container of sub
+ Sym* gotype;
+ char* file;
+ char* dynimpname;
+ char* dynimplib;
+ char* dynimpvers;
+
+ // STEXT
+ Auto* autom;
+ Prog* text;
+
+ // SDATA, SBSS
+ uchar* p;
+ int32 np;
+ int32 maxp;
+ Reloc* r;
+ int32 nr;
+ int32 maxr;
+};
+
+#define SIGNINTERN (1729*325*1729)
+
+struct Autom
+{
+ Sym* asym;
+ Auto* link;
+ int32 aoffset;
+ short type;
+ Sym* gotype;
+};
+struct Optab
+{
+ char as;
+ uchar a1;
+ char a2;
+ uchar a3;
+ uchar type;
+ char size;
+ char param;
+ char flag;
+};
+struct Oprang
+{
+ Optab* start;
+ Optab* stop;
+};
+struct Count
+{
+ int32 count;
+ int32 outof;
+};
+
+enum
+{
+ LFROM = 1<<0,
+ LTO = 1<<1,
+ LPOOL = 1<<2,
+
+ C_NONE = 0,
+ C_REG,
+ C_REGREG,
+ C_SHIFT,
+ C_FREG,
+ C_PSR,
+ C_FCR,
+
+ C_RCON, /* 0xff rotated */
+ C_NCON, /* ~RCON */
+ C_SCON, /* 0xffff */
+ C_LCON,
+ C_ZFCON,
+ C_SFCON,
+ C_LFCON,
+
+ C_RACON,
+ C_LACON,
+
+ C_SBRA,
+ C_LBRA,
+
+ C_HAUTO, /* halfword insn offset (-0xff to 0xff) */
+ C_FAUTO, /* float insn offset (0 to 0x3fc, word aligned) */
+ C_HFAUTO, /* both H and F */
+ C_SAUTO, /* -0xfff to 0xfff */
+ C_LAUTO,
+
+ C_HOREG,
+ C_FOREG,
+ C_HFOREG,
+ C_SOREG,
+ C_ROREG,
+ C_SROREG, /* both S and R */
+ C_LOREG,
+
+ C_PC,
+ C_SP,
+ C_HREG,
+
+ C_ADDR, /* reference to relocatable address */
+
+ C_GOK,
+
+/* mark flags */
+ FOLL = 1<<0,
+ LABEL = 1<<1,
+ LEAF = 1<<2,
+
+ STRINGSZ = 200,
+ MINSIZ = 64,
+ NENT = 100,
+ MAXIO = 8192,
+ MAXHIST = 20, /* limit of path elements for history symbols */
+ MINLC = 4,
+};
+
+#ifndef COFFCVT
+
+EXTERN int32 HEADR; /* length of header */
+EXTERN int HEADTYPE; /* type of header */
+EXTERN int32 INITDAT; /* data location */
+EXTERN int32 INITRND; /* data round above text location */
+EXTERN int32 INITTEXT; /* text location */
+EXTERN char* INITENTRY; /* entry point */
+EXTERN int32 autosize;
+EXTERN Auto* curauto;
+EXTERN Auto* curhist;
+EXTERN Prog* curp;
+EXTERN Sym* cursym;
+EXTERN Sym* datap;
+EXTERN int32 elfdatsize;
+EXTERN char debug[128];
+EXTERN Sym* etextp;
+EXTERN char* noname;
+EXTERN Prog* lastp;
+EXTERN int32 lcsize;
+EXTERN char literal[32];
+EXTERN int nerrors;
+EXTERN int32 instoffset;
+EXTERN Opcross opcross[8];
+EXTERN Oprang oprange[ALAST];
+EXTERN char* outfile;
+EXTERN int32 pc;
+EXTERN uchar repop[ALAST];
+EXTERN char* interpreter;
+EXTERN char* rpath;
+EXTERN uint32 stroffset;
+EXTERN int32 symsize;
+EXTERN Sym* textp;
+EXTERN int32 textsize;
+EXTERN int version;
+EXTERN char xcmp[C_GOK+1][C_GOK+1];
+EXTERN Prog zprg;
+EXTERN int dtype;
+EXTERN int armsize;
+
+extern char* anames[];
+extern Optab optab[];
+
+void addpool(Prog*, Adr*);
+EXTERN Prog* blitrl;
+EXTERN Prog* elitrl;
+
+void initdiv(void);
+EXTERN Prog* prog_div;
+EXTERN Prog* prog_divu;
+EXTERN Prog* prog_mod;
+EXTERN Prog* prog_modu;
+
+#pragma varargck type "A" int
+#pragma varargck type "C" int
+#pragma varargck type "D" Adr*
+#pragma varargck type "I" uchar*
+#pragma varargck type "N" Adr*
+#pragma varargck type "P" Prog*
+#pragma varargck type "S" char*
+#pragma varargck type "Z" char*
+#pragma varargck type "i" char*
+
+int Aconv(Fmt*);
+int Cconv(Fmt*);
+int Dconv(Fmt*);
+int Iconv(Fmt*);
+int Nconv(Fmt*);
+int Oconv(Fmt*);
+int Pconv(Fmt*);
+int Sconv(Fmt*);
+int aclass(Adr*);
+void addhist(int32, int);
+Prog* appendp(Prog*);
+void asmb(void);
+void asmout(Prog*, Optab*, int32*);
+int32 atolwhex(char*);
+Prog* brloop(Prog*);
+void buildop(void);
+void buildrep(int, int);
+void cflush(void);
+int chipzero(Ieee*);
+int chipfloat(Ieee*);
+int cmp(int, int);
+int compound(Prog*);
+double cputime(void);
+void diag(char*, ...);
+void divsig(void);
+void dodata(void);
+void doprof1(void);
+void doprof2(void);
+int32 entryvalue(void);
+void exchange(Prog*);
+void follow(void);
+void hputl(int);
+int isnop(Prog*);
+void listinit(void);
+Sym* lookup(char*, int);
+void cput(int);
+void hput(int32);
+void lput(int32);
+void lputb(int32);
+void lputl(int32);
+void* mysbrk(uint32);
+void names(void);
+void nocache(Prog*);
+int ocmp(const void*, const void*);
+int32 opirr(int);
+Optab* oplook(Prog*);
+int32 oprrr(int, int);
+int32 olr(int32, int, int, int);
+int32 olhr(int32, int, int, int);
+int32 olrr(int, int, int, int);
+int32 olhrr(int, int, int, int);
+int32 osr(int, int, int32, int, int);
+int32 oshr(int, int32, int, int);
+int32 ofsr(int, int, int32, int, int, Prog*);
+int32 osrr(int, int, int, int);
+int32 oshrr(int, int, int, int);
+int32 omvl(Prog*, Adr*, int);
+void patch(void);
+void prasm(Prog*);
+void prepend(Prog*, Prog*);
+Prog* prg(void);
+int pseudo(Prog*);
+int32 regoff(Adr*);
+int relinv(int);
+int32 rnd(int32, int32);
+void softfloat(void);
+void span(void);
+void strnput(char*, int);
+int32 symaddr(Sym*);
+void undef(void);
+void wput(int32);
+void wputl(ushort w);
+void xdefine(char*, int, int32);
+void noops(void);
+int32 immrot(uint32);
+int32 immaddr(int32);
+int32 opbra(int, int);
+int brextra(Prog*);
+int isbranch(Prog*);
+void fnptrs(void);
+void doelf(void);
+
+vlong addaddr(Sym *s, Sym *t);
+vlong addsize(Sym *s, Sym *t);
+vlong addstring(Sym *s, char *str);
+vlong adduint16(Sym *s, uint16 v);
+vlong adduint32(Sym *s, uint32 v);
+vlong adduint64(Sym *s, uint64 v);
+vlong adduint8(Sym *s, uint8 v);
+vlong adduintxx(Sym *s, uint64 v, int wid);
+
+/* Native is little-endian */
+#define LPUT(a) lputl(a)
+#define WPUT(a) wputl(a)
+#define VPUT(a) abort()
+
+#endif
diff --git a/src/cmd/5l/list.c b/src/cmd/5l/list.c
new file mode 100644
index 000000000..fa838215b
--- /dev/null
+++ b/src/cmd/5l/list.c
@@ -0,0 +1,487 @@
+// Inferno utils/5l/list.h
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/list.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Printing.
+
+#include "l.h"
+#include "../ld/lib.h"
+
+void
+listinit(void)
+{
+
+ fmtinstall('A', Aconv);
+ fmtinstall('C', Cconv);
+ fmtinstall('D', Dconv);
+ fmtinstall('P', Pconv);
+ fmtinstall('S', Sconv);
+ fmtinstall('N', Nconv);
+ fmtinstall('O', Oconv); // C_type constants
+ fmtinstall('I', Iconv);
+}
+
+void
+prasm(Prog *p)
+{
+ print("%P\n", p);
+}
+
+int
+Pconv(Fmt *fp)
+{
+ Prog *p;
+ int a;
+
+ p = va_arg(fp->args, Prog*);
+ curp = p;
+ a = p->as;
+ switch(a) {
+ default:
+ fmtprint(fp, "(%d)", p->line);
+ if(p->reg == NREG)
+ fmtprint(fp, " %A%C %D,%D",
+ a, p->scond, &p->from, &p->to);
+ else
+ if(p->from.type != D_FREG)
+ fmtprint(fp, " %A%C %D,R%d,%D",
+ a, p->scond, &p->from, p->reg, &p->to);
+ else
+ fmtprint(fp, " %A%C %D,F%d,%D",
+ a, p->scond, &p->from, p->reg, &p->to);
+ break;
+
+ case ASWPW:
+ case ASWPBU:
+ fmtprint(fp, "(%d) %A%C R%d,%D,%D",
+ p->line, a, p->scond, p->reg, &p->from, &p->to);
+ break;
+
+ case ADATA:
+ case AINIT_:
+ case ADYNT_:
+ fmtprint(fp, "(%d) %A%C %D/%d,%D",
+ p->line, a, p->scond, &p->from, p->reg, &p->to);
+ break;
+
+ case AWORD:
+ fmtprint(fp, "(%d) WORD %D", p->line, &p->to);
+ break;
+
+ case ADWORD:
+ fmtprint(fp, "(%d) DWORD %D %D", p->line, &p->from, &p->to);
+ break;
+ }
+
+ if(p->spadj)
+ fmtprint(fp, " (spadj%+d)", p->spadj);
+
+ return 0;
+}
+
+int
+Aconv(Fmt *fp)
+{
+ char *s;
+ int a;
+
+ a = va_arg(fp->args, int);
+ s = "???";
+ if(a >= AXXX && a < ALAST)
+ s = anames[a];
+ return fmtstrcpy(fp, s);
+}
+
+char* strcond[16] =
+{
+ ".EQ",
+ ".NE",
+ ".HS",
+ ".LO",
+ ".MI",
+ ".PL",
+ ".VS",
+ ".VC",
+ ".HI",
+ ".LS",
+ ".GE",
+ ".LT",
+ ".GT",
+ ".LE",
+ "",
+ ".NV"
+};
+
+int
+Cconv(Fmt *fp)
+{
+ char s[20];
+ int c;
+
+ c = va_arg(fp->args, int);
+ strcpy(s, strcond[c & C_SCOND]);
+ if(c & C_SBIT)
+ strcat(s, ".S");
+ if(c & C_PBIT)
+ strcat(s, ".P");
+ if(c & C_WBIT)
+ strcat(s, ".W");
+ if(c & C_UBIT) /* ambiguous with FBIT */
+ strcat(s, ".U");
+ return fmtstrcpy(fp, s);
+}
+
+int
+Dconv(Fmt *fp)
+{
+ char str[STRINGSZ];
+ char *op;
+ Adr *a;
+ int32 v;
+
+ a = va_arg(fp->args, Adr*);
+ switch(a->type) {
+
+ default:
+ snprint(str, sizeof str, "GOK-type(%d)", a->type);
+ break;
+
+ case D_NONE:
+ str[0] = 0;
+ if(a->name != D_NONE || a->reg != NREG || a->sym != S)
+ snprint(str, sizeof str, "%N(R%d)(NONE)", a, a->reg);
+ break;
+
+ case D_CONST:
+ if(a->reg == NREG)
+ snprint(str, sizeof str, "$%N", a);
+ else
+ snprint(str, sizeof str, "$%N(R%d)", a, a->reg);
+ break;
+
+ case D_CONST2:
+ snprint(str, sizeof str, "$%d-%d", a->offset, a->offset2);
+ break;
+
+ case D_SHIFT:
+ v = a->offset;
+ op = "<<>>->@>" + (((v>>5) & 3) << 1);
+ if(v & (1<<4))
+ snprint(str, sizeof str, "R%d%c%cR%d", v&15, op[0], op[1], (v>>8)&15);
+ else
+ snprint(str, sizeof str, "R%d%c%c%d", v&15, op[0], op[1], (v>>7)&31);
+ if(a->reg != NREG)
+ seprint(str+strlen(str), str+sizeof str, "(R%d)", a->reg);
+ break;
+
+ case D_OCONST:
+ snprint(str, sizeof str, "$*$%N", a);
+ if(a->reg != NREG)
+ snprint(str, sizeof str, "%N(R%d)(CONST)", a, a->reg);
+ break;
+
+ case D_OREG:
+ if(a->reg != NREG)
+ snprint(str, sizeof str, "%N(R%d)", a, a->reg);
+ else
+ snprint(str, sizeof str, "%N", a);
+ break;
+
+ case D_REG:
+ snprint(str, sizeof str, "R%d", a->reg);
+ if(a->name != D_NONE || a->sym != S)
+ snprint(str, sizeof str, "%N(R%d)(REG)", a, a->reg);
+ break;
+
+ case D_REGREG:
+ snprint(str, sizeof str, "(R%d,R%d)", a->reg, (int)a->offset);
+ if(a->name != D_NONE || a->sym != S)
+ snprint(str, sizeof str, "%N(R%d)(REG)", a, a->reg);
+ break;
+
+ case D_FREG:
+ snprint(str, sizeof str, "F%d", a->reg);
+ if(a->name != D_NONE || a->sym != S)
+ snprint(str, sizeof str, "%N(R%d)(REG)", a, a->reg);
+ break;
+
+ case D_PSR:
+ switch(a->reg) {
+ case 0:
+ snprint(str, sizeof str, "CPSR");
+ break;
+ case 1:
+ snprint(str, sizeof str, "SPSR");
+ break;
+ default:
+ snprint(str, sizeof str, "PSR%d", a->reg);
+ break;
+ }
+ if(a->name != D_NONE || a->sym != S)
+ snprint(str, sizeof str, "%N(PSR%d)(REG)", a, a->reg);
+ break;
+
+ case D_FPCR:
+ switch(a->reg){
+ case 0:
+ snprint(str, sizeof str, "FPSR");
+ break;
+ case 1:
+ snprint(str, sizeof str, "FPCR");
+ break;
+ default:
+ snprint(str, sizeof str, "FCR%d", a->reg);
+ break;
+ }
+ if(a->name != D_NONE || a->sym != S)
+ snprint(str, sizeof str, "%N(FCR%d)(REG)", a, a->reg);
+
+ break;
+
+ case D_BRANCH: /* botch */
+ if(curp->cond != P) {
+ v = curp->cond->pc;
+ if(a->sym != S)
+ snprint(str, sizeof str, "%s+%.5ux(BRANCH)", a->sym->name, v);
+ else
+ snprint(str, sizeof str, "%.5ux(BRANCH)", v);
+ } else
+ if(a->sym != S)
+ snprint(str, sizeof str, "%s+%d(APC)", a->sym->name, a->offset);
+ else
+ snprint(str, sizeof str, "%d(APC)", a->offset);
+ break;
+
+ case D_FCONST:
+ snprint(str, sizeof str, "$%e", ieeedtod(&a->ieee));
+ break;
+
+ case D_SCONST:
+ snprint(str, sizeof str, "$\"%S\"", a->sval);
+ break;
+ }
+ return fmtstrcpy(fp, str);
+}
+
+int
+Nconv(Fmt *fp)
+{
+ char str[STRINGSZ];
+ Adr *a;
+ Sym *s;
+
+ a = va_arg(fp->args, Adr*);
+ s = a->sym;
+ switch(a->name) {
+ default:
+ sprint(str, "GOK-name(%d)", a->name);
+ break;
+
+ case D_NONE:
+ sprint(str, "%d", a->offset);
+ break;
+
+ case D_EXTERN:
+ if(s == S)
+ sprint(str, "%d(SB)", a->offset);
+ else
+ sprint(str, "%s+%d(SB)", s->name, a->offset);
+ break;
+
+ case D_STATIC:
+ if(s == S)
+ sprint(str, "<>+%d(SB)", a->offset);
+ else
+ sprint(str, "%s<>+%d(SB)", s->name, a->offset);
+ break;
+
+ case D_AUTO:
+ if(s == S)
+ sprint(str, "%d(SP)", a->offset);
+ else
+ sprint(str, "%s-%d(SP)", s->name, -a->offset);
+ break;
+
+ case D_PARAM:
+ if(s == S)
+ sprint(str, "%d(FP)", a->offset);
+ else
+ sprint(str, "%s+%d(FP)", s->name, a->offset);
+ break;
+ }
+ return fmtstrcpy(fp, str);
+}
+
+int
+Sconv(Fmt *fp)
+{
+ int i, c;
+ char str[STRINGSZ], *p, *a;
+
+ a = va_arg(fp->args, char*);
+ p = str;
+ for(i=0; i<sizeof(int32); i++) {
+ c = a[i] & 0xff;
+ if(c >= 'a' && c <= 'z' ||
+ c >= 'A' && c <= 'Z' ||
+ c >= '0' && c <= '9' ||
+ c == ' ' || c == '%') {
+ *p++ = c;
+ continue;
+ }
+ *p++ = '\\';
+ switch(c) {
+ case 0:
+ *p++ = 'z';
+ continue;
+ case '\\':
+ case '"':
+ *p++ = c;
+ continue;
+ case '\n':
+ *p++ = 'n';
+ continue;
+ case '\t':
+ *p++ = 't';
+ continue;
+ }
+ *p++ = (c>>6) + '0';
+ *p++ = ((c>>3) & 7) + '0';
+ *p++ = (c & 7) + '0';
+ }
+ *p = 0;
+ return fmtstrcpy(fp, str);
+}
+
+int
+Iconv(Fmt *fp)
+{
+ int i, n;
+ uint32 *p;
+ char *s;
+ Fmt fmt;
+
+ n = fp->prec;
+ fp->prec = 0;
+ if(!(fp->flags&FmtPrec) || n < 0)
+ return fmtstrcpy(fp, "%I");
+ fp->flags &= ~FmtPrec;
+ p = va_arg(fp->args, uint32*);
+
+ // format into temporary buffer and
+ // call fmtstrcpy to handle padding.
+ fmtstrinit(&fmt);
+ for(i=0; i<n/4; i++) {
+ if(i > 0)
+ fmtprint(&fmt, " ");
+ fmtprint(&fmt, "%.8ux", *p++);
+ }
+ s = fmtstrflush(&fmt);
+ fmtstrcpy(fp, s);
+ free(s);
+ return 0;
+}
+
+static char*
+cnames[] =
+{
+ [C_ADDR] = "C_ADDR",
+ [C_FAUTO] = "C_FAUTO",
+ [C_ZFCON] = "C_SFCON",
+ [C_SFCON] = "C_SFCON",
+ [C_LFCON] = "C_LFCON",
+ [C_FCR] = "C_FCR",
+ [C_FOREG] = "C_FOREG",
+ [C_FREG] = "C_FREG",
+ [C_GOK] = "C_GOK",
+ [C_HAUTO] = "C_HAUTO",
+ [C_HFAUTO] = "C_HFAUTO",
+ [C_HFOREG] = "C_HFOREG",
+ [C_HOREG] = "C_HOREG",
+ [C_HREG] = "C_HREG",
+ [C_LACON] = "C_LACON",
+ [C_LAUTO] = "C_LAUTO",
+ [C_LBRA] = "C_LBRA",
+ [C_LCON] = "C_LCON",
+ [C_LOREG] = "C_LOREG",
+ [C_NCON] = "C_NCON",
+ [C_NONE] = "C_NONE",
+ [C_PC] = "C_PC",
+ [C_PSR] = "C_PSR",
+ [C_RACON] = "C_RACON",
+ [C_RCON] = "C_RCON",
+ [C_REG] = "C_REG",
+ [C_REGREG] = "C_REGREG",
+ [C_ROREG] = "C_ROREG",
+ [C_SAUTO] = "C_SAUTO",
+ [C_SBRA] = "C_SBRA",
+ [C_SCON] = "C_SCON",
+ [C_SHIFT] = "C_SHIFT",
+ [C_SOREG] = "C_SOREG",
+ [C_SP] = "C_SP",
+ [C_SROREG] = "C_SROREG"
+};
+
+int
+Oconv(Fmt *fp)
+{
+ char buf[500];
+ int o;
+
+ o = va_arg(fp->args, int);
+ if(o < 0 || o >= nelem(cnames) || cnames[o] == nil) {
+ snprint(buf, sizeof(buf), "C_%d", o);
+ return fmtstrcpy(fp, buf);
+ }
+ return fmtstrcpy(fp, cnames[o]);
+}
+
+void
+diag(char *fmt, ...)
+{
+ char buf[STRINGSZ], *tn, *sep;
+ va_list arg;
+
+ tn = "";
+ sep = "";
+ if(cursym != S) {
+ tn = cursym->name;
+ sep = ": ";
+ }
+ va_start(arg, fmt);
+ vseprint(buf, buf+sizeof(buf), fmt, arg);
+ va_end(arg);
+ print("%s%s%s\n", tn, sep, buf);
+
+ nerrors++;
+ if(nerrors > 20) {
+ print("too many errors\n");
+ errorexit();
+ }
+}
diff --git a/src/cmd/5l/mkenam b/src/cmd/5l/mkenam
new file mode 100644
index 000000000..6cccb0263
--- /dev/null
+++ b/src/cmd/5l/mkenam
@@ -0,0 +1,45 @@
+# Inferno utils/5c/mkenam
+# http://code.google.com/p/inferno-os/source/browse/utils/5c/mkenam
+#
+# Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+# Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+# Portions Copyright © 1997-1999 Vita Nuova Limited
+# Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+# Portions Copyright © 2004,2006 Bruce Ellis
+# Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+# Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+# Portions Copyright © 2009 The Go Authors. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+awk '
+BEGIN {
+ print "char* anames[] ="
+ print "{"
+}
+
+/^ A/ {
+ name=$1
+ sub(/,/, "", name)
+ sub(/^A/, "", name)
+ print "\t\"" name "\","
+}
+
+END { print "};" }
+' ../5l/5.out.h >enam.c
diff --git a/src/cmd/5l/noop.c b/src/cmd/5l/noop.c
new file mode 100644
index 000000000..eb44344f4
--- /dev/null
+++ b/src/cmd/5l/noop.c
@@ -0,0 +1,539 @@
+// Inferno utils/5l/noop.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/noop.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Code transformations.
+
+#include "l.h"
+#include "../ld/lib.h"
+
+// see ../../runtime/proc.c:/StackGuard
+enum
+{
+ StackBig = 4096,
+ StackSmall = 128,
+};
+
+static Sym* sym_div;
+static Sym* sym_divu;
+static Sym* sym_mod;
+static Sym* sym_modu;
+
+void
+noops(void)
+{
+ Prog *p, *q, *q1;
+ int o;
+ Prog *pmorestack;
+ Sym *symmorestack;
+
+ /*
+ * find leaf subroutines
+ * strip NOPs
+ * expand RET
+ * expand BECOME pseudo
+ */
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f noops\n", cputime());
+ Bflush(&bso);
+
+ symmorestack = lookup("runtime.morestack", 0);
+ if(symmorestack->type != STEXT) {
+ diag("runtime·morestack not defined");
+ errorexit();
+ }
+ pmorestack = symmorestack->text;
+ pmorestack->reg |= NOSPLIT;
+
+ q = P;
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ for(p = cursym->text; p != P; p = p->link) {
+ switch(p->as) {
+ case ATEXT:
+ p->mark |= LEAF;
+ break;
+
+ case ARET:
+ break;
+
+ case ADIV:
+ case ADIVU:
+ case AMOD:
+ case AMODU:
+ q = p;
+ if(prog_div == P)
+ initdiv();
+ cursym->text->mark &= ~LEAF;
+ continue;
+
+ case ANOP:
+ q1 = p->link;
+ q->link = q1; /* q is non-nop */
+ if(q1 != P)
+ q1->mark |= p->mark;
+ continue;
+
+ case ABL:
+ case ABX:
+ cursym->text->mark &= ~LEAF;
+
+ case ABCASE:
+ case AB:
+
+ case ABEQ:
+ case ABNE:
+ case ABCS:
+ case ABHS:
+ case ABCC:
+ case ABLO:
+ case ABMI:
+ case ABPL:
+ case ABVS:
+ case ABVC:
+ case ABHI:
+ case ABLS:
+ case ABGE:
+ case ABLT:
+ case ABGT:
+ case ABLE:
+ q1 = p->cond;
+ if(q1 != P) {
+ while(q1->as == ANOP) {
+ q1 = q1->link;
+ p->cond = q1;
+ }
+ }
+ break;
+ }
+ q = p;
+ }
+ }
+
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ for(p = cursym->text; p != P; p = p->link) {
+ o = p->as;
+ switch(o) {
+ case ATEXT:
+ autosize = p->to.offset + 4;
+ if(autosize <= 4)
+ if(cursym->text->mark & LEAF) {
+ p->to.offset = -4;
+ autosize = 0;
+ }
+
+ if(!autosize && !(cursym->text->mark & LEAF)) {
+ if(debug['v'])
+ Bprint(&bso, "save suppressed in: %s\n",
+ cursym->name);
+ Bflush(&bso);
+ cursym->text->mark |= LEAF;
+ }
+ if(cursym->text->mark & LEAF) {
+ cursym->leaf = 1;
+ if(!autosize)
+ break;
+ }
+
+ if(p->reg & NOSPLIT) {
+ q1 = prg();
+ q1->as = AMOVW;
+ q1->scond |= C_WBIT;
+ q1->line = p->line;
+ q1->from.type = D_REG;
+ q1->from.reg = REGLINK;
+ q1->to.type = D_OREG;
+ q1->to.offset = -autosize;
+ q1->to.reg = REGSP;
+ q1->spadj = autosize;
+ q1->link = p->link;
+ p->link = q1;
+ } else if (autosize < StackBig) {
+ // split stack check for small functions
+ // MOVW g_stackguard(g), R1
+ // CMP R1, $-autosize(SP)
+ // MOVW.LO $autosize, R1
+ // MOVW.LO $args, R2
+ // MOVW.LO R14, R3
+ // BL.LO runtime.morestack(SB) // modifies LR
+ // MOVW.W R14,$-autosize(SP)
+
+ // TODO(kaib): add more trampolines
+ // TODO(kaib): put stackguard in register
+ // TODO(kaib): add support for -K and underflow detection
+
+ // MOVW g_stackguard(g), R1
+ p = appendp(p);
+ p->as = AMOVW;
+ p->from.type = D_OREG;
+ p->from.reg = REGG;
+ p->to.type = D_REG;
+ p->to.reg = 1;
+
+ if(autosize < StackSmall) {
+ // CMP R1, SP
+ p = appendp(p);
+ p->as = ACMP;
+ p->from.type = D_REG;
+ p->from.reg = 1;
+ p->reg = REGSP;
+ } else {
+ // MOVW $-autosize(SP), R2
+ // CMP R1, R2
+ p = appendp(p);
+ p->as = AMOVW;
+ p->from.type = D_CONST;
+ p->from.reg = REGSP;
+ p->from.offset = -autosize;
+ p->to.type = D_REG;
+ p->to.reg = 2;
+
+ p = appendp(p);
+ p->as = ACMP;
+ p->from.type = D_REG;
+ p->from.reg = 1;
+ p->reg = 2;
+ }
+
+ // MOVW.LO $autosize, R1
+ p = appendp(p);
+ p->as = AMOVW;
+ p->scond = C_SCOND_LO;
+ p->from.type = D_CONST;
+ /* 160 comes from 3 calls (3*8) 4 safes (4*8) and 104 guard */
+ p->from.offset = autosize+160;
+ p->to.type = D_REG;
+ p->to.reg = 1;
+
+ // MOVW.LO $args, R2
+ p = appendp(p);
+ p->as = AMOVW;
+ p->scond = C_SCOND_LO;
+ p->from.type = D_CONST;
+ p->from.offset = (cursym->text->to.offset2 + 3) & ~3;
+ p->to.type = D_REG;
+ p->to.reg = 2;
+
+ // MOVW.LO R14, R3
+ p = appendp(p);
+ p->as = AMOVW;
+ p->scond = C_SCOND_LO;
+ p->from.type = D_REG;
+ p->from.reg = REGLINK;
+ p->to.type = D_REG;
+ p->to.reg = 3;
+
+ // BL.LO runtime.morestack(SB) // modifies LR
+ p = appendp(p);
+ p->as = ABL;
+ p->scond = C_SCOND_LO;
+ p->to.type = D_BRANCH;
+ p->to.sym = symmorestack;
+ p->cond = pmorestack;
+
+ // MOVW.W R14,$-autosize(SP)
+ p = appendp(p);
+ p->as = AMOVW;
+ p->scond |= C_WBIT;
+ p->from.type = D_REG;
+ p->from.reg = REGLINK;
+ p->to.type = D_OREG;
+ p->to.offset = -autosize;
+ p->to.reg = REGSP;
+ p->spadj = autosize;
+ } else { // > StackBig
+ // MOVW $autosize, R1
+ // MOVW $args, R2
+ // MOVW R14, R3
+ // BL runtime.morestack(SB) // modifies LR
+ // MOVW.W R14,$-autosize(SP)
+
+ // MOVW $autosize, R1
+ p = appendp(p);
+ p->as = AMOVW;
+ p->from.type = D_CONST;
+ p->from.offset = autosize;
+ p->to.type = D_REG;
+ p->to.reg = 1;
+
+ // MOVW $args, R2
+ // also need to store the extra 4 bytes.
+ p = appendp(p);
+ p->as = AMOVW;
+ p->from.type = D_CONST;
+ p->from.offset = (cursym->text->to.offset2 + 3) & ~3;
+ p->to.type = D_REG;
+ p->to.reg = 2;
+
+ // MOVW R14, R3
+ p = appendp(p);
+ p->as = AMOVW;
+ p->from.type = D_REG;
+ p->from.reg = REGLINK;
+ p->to.type = D_REG;
+ p->to.reg = 3;
+
+ // BL runtime.morestack(SB) // modifies LR
+ p = appendp(p);
+ p->as = ABL;
+ p->to.type = D_BRANCH;
+ p->to.sym = symmorestack;
+ p->cond = pmorestack;
+
+ // MOVW.W R14,$-autosize(SP)
+ p = appendp(p);
+ p->as = AMOVW;
+ p->scond |= C_WBIT;
+ p->from.type = D_REG;
+ p->from.reg = REGLINK;
+ p->to.type = D_OREG;
+ p->to.offset = -autosize;
+ p->to.reg = REGSP;
+ p->spadj = autosize;
+ }
+ break;
+
+ case ARET:
+ nocache(p);
+ if(cursym->text->mark & LEAF) {
+ if(!autosize) {
+ p->as = AB;
+ p->from = zprg.from;
+ p->to.type = D_OREG;
+ p->to.offset = 0;
+ p->to.reg = REGLINK;
+ break;
+ }
+ }
+ p->as = AMOVW;
+ p->scond |= C_PBIT;
+ p->from.type = D_OREG;
+ p->from.offset = autosize;
+ p->from.reg = REGSP;
+ p->to.type = D_REG;
+ p->to.reg = REGPC;
+ // If there are instructions following
+ // this ARET, they come from a branch
+ // with the same stackframe, so no spadj.
+ break;
+
+ case AADD:
+ if(p->from.type == D_CONST && p->from.reg == NREG && p->to.type == D_REG && p->to.reg == REGSP)
+ p->spadj = -p->from.offset;
+ break;
+
+ case ASUB:
+ if(p->from.type == D_CONST && p->from.reg == NREG && p->to.type == D_REG && p->to.reg == REGSP)
+ p->spadj = p->from.offset;
+ break;
+
+ case ADIV:
+ case ADIVU:
+ case AMOD:
+ case AMODU:
+ if(debug['M'])
+ break;
+ if(p->from.type != D_REG)
+ break;
+ if(p->to.type != D_REG)
+ break;
+ q1 = p;
+
+ /* MOV a,4(SP) */
+ q = prg();
+ q->link = p->link;
+ p->link = q;
+ p = q;
+
+ p->as = AMOVW;
+ p->line = q1->line;
+ p->from.type = D_REG;
+ p->from.reg = q1->from.reg;
+ p->to.type = D_OREG;
+ p->to.reg = REGSP;
+ p->to.offset = 4;
+
+ /* MOV b,REGTMP */
+ q = prg();
+ q->link = p->link;
+ p->link = q;
+ p = q;
+
+ p->as = AMOVW;
+ p->line = q1->line;
+ p->from.type = D_REG;
+ p->from.reg = q1->reg;
+ if(q1->reg == NREG)
+ p->from.reg = q1->to.reg;
+ p->to.type = D_REG;
+ p->to.reg = REGTMP;
+ p->to.offset = 0;
+
+ /* CALL appropriate */
+ q = prg();
+ q->link = p->link;
+ p->link = q;
+ p = q;
+
+ p->as = ABL;
+ p->line = q1->line;
+ p->to.type = D_BRANCH;
+ p->cond = p;
+ switch(o) {
+ case ADIV:
+ p->cond = prog_div;
+ p->to.sym = sym_div;
+ break;
+ case ADIVU:
+ p->cond = prog_divu;
+ p->to.sym = sym_divu;
+ break;
+ case AMOD:
+ p->cond = prog_mod;
+ p->to.sym = sym_mod;
+ break;
+ case AMODU:
+ p->cond = prog_modu;
+ p->to.sym = sym_modu;
+ break;
+ }
+
+ /* MOV REGTMP, b */
+ q = prg();
+ q->link = p->link;
+ p->link = q;
+ p = q;
+
+ p->as = AMOVW;
+ p->line = q1->line;
+ p->from.type = D_REG;
+ p->from.reg = REGTMP;
+ p->from.offset = 0;
+ p->to.type = D_REG;
+ p->to.reg = q1->to.reg;
+
+ /* ADD $8,SP */
+ q = prg();
+ q->link = p->link;
+ p->link = q;
+ p = q;
+
+ p->as = AADD;
+ p->from.type = D_CONST;
+ p->from.reg = NREG;
+ p->from.offset = 8;
+ p->reg = NREG;
+ p->to.type = D_REG;
+ p->to.reg = REGSP;
+ p->spadj = -8;
+
+ /* SUB $8,SP */
+ q1->as = ASUB;
+ q1->from.type = D_CONST;
+ q1->from.offset = 8;
+ q1->from.reg = NREG;
+ q1->reg = NREG;
+ q1->to.type = D_REG;
+ q1->to.reg = REGSP;
+ q1->spadj = 8;
+
+ break;
+ case AMOVW:
+ if((p->scond & C_WBIT) && p->to.type == D_OREG && p->to.reg == REGSP)
+ p->spadj = -p->to.offset;
+ if((p->scond & C_PBIT) && p->from.type == D_OREG && p->from.reg == REGSP && p->to.reg != REGPC)
+ p->spadj = -p->from.offset;
+ if(p->from.type == D_CONST && p->from.reg == REGSP && p->to.type == D_REG && p->to.reg == REGSP)
+ p->spadj = -p->from.offset;
+ break;
+ }
+ }
+ }
+}
+
+static void
+sigdiv(char *n)
+{
+ Sym *s;
+
+ s = lookup(n, 0);
+ if(s->type == STEXT)
+ if(s->sig == 0)
+ s->sig = SIGNINTERN;
+}
+
+void
+divsig(void)
+{
+ sigdiv("_div");
+ sigdiv("_divu");
+ sigdiv("_mod");
+ sigdiv("_modu");
+}
+
+void
+initdiv(void)
+{
+ Sym *s2, *s3, *s4, *s5;
+
+ if(prog_div != P)
+ return;
+ sym_div = s2 = lookup("_div", 0);
+ sym_divu = s3 = lookup("_divu", 0);
+ sym_mod = s4 = lookup("_mod", 0);
+ sym_modu = s5 = lookup("_modu", 0);
+ prog_div = s2->text;
+ prog_divu = s3->text;
+ prog_mod = s4->text;
+ prog_modu = s5->text;
+ if(prog_div == P) {
+ diag("undefined: %s", s2->name);
+ prog_div = cursym->text;
+ }
+ if(prog_divu == P) {
+ diag("undefined: %s", s3->name);
+ prog_divu = cursym->text;
+ }
+ if(prog_mod == P) {
+ diag("undefined: %s", s4->name);
+ prog_mod = cursym->text;
+ }
+ if(prog_modu == P) {
+ diag("undefined: %s", s5->name);
+ prog_modu = cursym->text;
+ }
+}
+
+void
+nocache(Prog *p)
+{
+ p->optab = 0;
+ p->from.class = 0;
+ p->to.class = 0;
+}
diff --git a/src/cmd/5l/obj.c b/src/cmd/5l/obj.c
new file mode 100644
index 000000000..fc5806aac
--- /dev/null
+++ b/src/cmd/5l/obj.c
@@ -0,0 +1,744 @@
+// Inferno utils/5l/obj.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/obj.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Reading object files.
+
+#define EXTERN
+#include "l.h"
+#include "../ld/lib.h"
+#include "../ld/elf.h"
+#include <ar.h>
+
+#ifndef DEFAULT
+#define DEFAULT '9'
+#endif
+
+char *noname = "<none>";
+char *thestring = "arm";
+
+Header headers[] = {
+ "noheader", Hnoheader,
+ "risc", Hrisc,
+ "plan9", Hplan9x32,
+ "netbsd", Hnetbsd,
+ "ixp1200", Hixp1200,
+ "ipaq", Hipaq,
+ "linux", Hlinux,
+ 0, 0
+};
+
+/*
+ * -Hrisc -T0x10005000 -R4 is aif for risc os
+ * -Hplan9 -T4128 -R4096 is plan9 format
+ * -Hnetbsd -T0xF0000020 -R4 is NetBSD format
+ * -Hixp1200 is IXP1200 (raw)
+ * -Hipaq -T0xC0008010 -R1024 is ipaq
+ * -Hlinux -Tx -Rx is linux elf
+ */
+
+static char*
+linkername[] =
+{
+ "runtime.softfloat",
+ "math.sqrtGoC",
+};
+
+void
+usage(void)
+{
+ fprint(2, "usage: 5l [-E entry] [-H head] [-I interpreter] [-L dir] [-T text] [-D data] [-R rnd] [-r path] [-o out] main.5\n");
+ errorexit();
+}
+
+void
+main(int argc, char *argv[])
+{
+ int c, i;
+ char *p;
+
+ Binit(&bso, 1, OWRITE);
+ listinit();
+ nerrors = 0;
+ outfile = "5.out";
+ HEADTYPE = -1;
+ INITTEXT = -1;
+ INITDAT = -1;
+ INITRND = -1;
+ INITENTRY = 0;
+
+ p = getenv("GOARM");
+ if(p != nil && strcmp(p, "5") == 0)
+ debug['F'] = 1;
+
+ ARGBEGIN {
+ default:
+ c = ARGC();
+ if(c == 'l')
+ usage();
+ if(c >= 0 && c < sizeof(debug))
+ debug[c]++;
+ break;
+ case 'o':
+ outfile = EARGF(usage());
+ break;
+ case 'E':
+ INITENTRY = EARGF(usage());
+ break;
+ case 'I':
+ interpreter = EARGF(usage());
+ break;
+ case 'L':
+ Lflag(EARGF(usage()));
+ break;
+ case 'T':
+ INITTEXT = atolwhex(EARGF(usage()));
+ break;
+ case 'D':
+ INITDAT = atolwhex(EARGF(usage()));
+ break;
+ case 'R':
+ INITRND = atolwhex(EARGF(usage()));
+ break;
+ case 'r':
+ rpath = EARGF(usage());
+ break;
+ case 'H':
+ HEADTYPE = headtype(EARGF(usage()));
+ /* do something about setting INITTEXT */
+ break;
+ case 'V':
+ print("%cl version %s\n", thechar, getgoversion());
+ errorexit();
+ } ARGEND
+
+ USED(argc);
+
+ if(argc != 1)
+ usage();
+
+ libinit();
+
+ if(HEADTYPE == -1)
+ HEADTYPE = Hlinux;
+ switch(HEADTYPE) {
+ default:
+ diag("unknown -H option");
+ errorexit();
+ case Hnoheader: /* no header */
+ HEADR = 0L;
+ if(INITTEXT == -1)
+ INITTEXT = 0;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 4;
+ break;
+ case Hrisc: /* aif for risc os */
+ HEADR = 128L;
+ if(INITTEXT == -1)
+ INITTEXT = 0x10005000 + HEADR;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 4;
+ break;
+ case Hplan9x32: /* plan 9 */
+ HEADR = 32L;
+ if(INITTEXT == -1)
+ INITTEXT = 4128;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 4096;
+ break;
+ case Hnetbsd: /* boot for NetBSD */
+ HEADR = 32L;
+ if(INITTEXT == -1)
+ INITTEXT = 0xF0000020L;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 4096;
+ break;
+ case Hixp1200: /* boot for IXP1200 */
+ HEADR = 0L;
+ if(INITTEXT == -1)
+ INITTEXT = 0x0;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 4;
+ break;
+ case Hipaq: /* boot for ipaq */
+ HEADR = 16L;
+ if(INITTEXT == -1)
+ INITTEXT = 0xC0008010;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 1024;
+ break;
+ case Hlinux: /* arm elf */
+ debug['d'] = 1; // no dynamic linking
+ elfinit();
+ HEADR = ELFRESERVE;
+ if(INITTEXT == -1)
+ INITTEXT = 0x10000 + HEADR;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 4096;
+ break;
+ }
+ if(INITDAT != 0 && INITRND != 0)
+ print("warning: -D0x%ux is ignored because of -R0x%ux\n",
+ INITDAT, INITRND);
+ if(debug['v'])
+ Bprint(&bso, "HEADER = -H0x%d -T0x%ux -D0x%ux -R0x%ux\n",
+ HEADTYPE, INITTEXT, INITDAT, INITRND);
+ Bflush(&bso);
+ zprg.as = AGOK;
+ zprg.scond = 14;
+ zprg.reg = NREG;
+ zprg.from.name = D_NONE;
+ zprg.from.type = D_NONE;
+ zprg.from.reg = NREG;
+ zprg.to = zprg.from;
+ buildop();
+ histgen = 0;
+ pc = 0;
+ dtype = 4;
+ nuxiinit();
+
+ version = 0;
+ cbp = buf.cbuf;
+ cbc = sizeof(buf.cbuf);
+
+ addlibpath("command line", "command line", argv[0], "main");
+ loadlib();
+
+ // mark some functions that are only referenced after linker code editing
+ // TODO(kaib): this doesn't work, the prog can't be found in runtime
+ for(i=0; i<nelem(linkername); i++)
+ mark(lookup(linkername[i], 0));
+ deadcode();
+ if(textp == nil) {
+ diag("no code");
+ errorexit();
+ }
+
+ patch();
+ if(debug['p'])
+ if(debug['1'])
+ doprof1();
+ else
+ doprof2();
+ doelf();
+ follow();
+ softfloat();
+ noops();
+ dostkcheck();
+ span();
+ pclntab();
+ symtab();
+ dodata();
+ address();
+ doweak();
+ reloc();
+ asmb();
+ undef();
+
+ if(debug['c'])
+ print("ARM size = %d\n", armsize);
+ if(debug['v']) {
+ Bprint(&bso, "%5.2f cpu time\n", cputime());
+ Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
+ Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
+ }
+ Bflush(&bso);
+ errorexit();
+}
+
+static void
+zaddr(Biobuf *f, Adr *a, Sym *h[])
+{
+ int i, c;
+ int32 l;
+ Sym *s;
+ Auto *u;
+
+ a->type = Bgetc(f);
+ a->reg = Bgetc(f);
+ c = Bgetc(f);
+ if(c < 0 || c > NSYM){
+ print("sym out of range: %d\n", c);
+ Bputc(f, ALAST+1);
+ return;
+ }
+ a->sym = h[c];
+ a->name = Bgetc(f);
+
+ if((schar)a->reg < 0 || a->reg > NREG) {
+ print("register out of range %d\n", a->reg);
+ Bputc(f, ALAST+1);
+ return; /* force real diagnostic */
+ }
+
+ if(a->type == D_CONST || a->type == D_OCONST) {
+ if(a->name == D_EXTERN || a->name == D_STATIC) {
+ s = a->sym;
+ if(s != S && (s->type == STEXT || s->type == SCONST || s->type == SXREF)) {
+ if(0 && !s->fnptr && s->name[0] != '.')
+ print("%s used as function pointer\n", s->name);
+ s->fnptr = 1; // over the top cos of SXREF
+ }
+ }
+ }
+
+ switch(a->type) {
+ default:
+ print("unknown type %d\n", a->type);
+ Bputc(f, ALAST+1);
+ return; /* force real diagnostic */
+
+ case D_NONE:
+ case D_REG:
+ case D_FREG:
+ case D_PSR:
+ case D_FPCR:
+ break;
+
+ case D_REGREG:
+ a->offset = Bgetc(f);
+ break;
+
+ case D_CONST2:
+ a->offset2 = Bget4(f); // fall through
+ case D_BRANCH:
+ case D_OREG:
+ case D_CONST:
+ case D_OCONST:
+ case D_SHIFT:
+ a->offset = Bget4(f);
+ break;
+
+ case D_SCONST:
+ a->sval = mal(NSNAME);
+ Bread(f, a->sval, NSNAME);
+ break;
+
+ case D_FCONST:
+ a->ieee.l = Bget4(f);
+ a->ieee.h = Bget4(f);
+ break;
+ }
+ s = a->sym;
+ if(s == S)
+ return;
+ i = a->name;
+ if(i != D_AUTO && i != D_PARAM)
+ return;
+
+ l = a->offset;
+ for(u=curauto; u; u=u->link)
+ if(u->asym == s)
+ if(u->type == i) {
+ if(u->aoffset > l)
+ u->aoffset = l;
+ return;
+ }
+
+ u = mal(sizeof(Auto));
+ u->link = curauto;
+ curauto = u;
+ u->asym = s;
+ u->aoffset = l;
+ u->type = i;
+}
+
+void
+nopout(Prog *p)
+{
+ p->as = ANOP;
+ p->from.type = D_NONE;
+ p->to.type = D_NONE;
+}
+
+void
+ldobj1(Biobuf *f, char *pkg, int64 len, char *pn)
+{
+ int32 ipc;
+ Prog *p;
+ Sym *h[NSYM], *s;
+ int v, o, r, skip;
+ uint32 sig;
+ char *name;
+ int ntext;
+ int32 eof;
+ char src[1024], *x;
+ Prog *lastp;
+
+ lastp = nil;
+ ntext = 0;
+ eof = Boffset(f) + len;
+ src[0] = 0;
+
+newloop:
+ memset(h, 0, sizeof(h));
+ version++;
+ histfrogp = 0;
+ ipc = pc;
+ skip = 0;
+
+loop:
+ if(f->state == Bracteof || Boffset(f) >= eof)
+ goto eof;
+ o = Bgetc(f);
+ if(o == Beof)
+ goto eof;
+
+ if(o <= AXXX || o >= ALAST) {
+ diag("%s:#%lld: opcode out of range: %#ux", pn, Boffset(f), o);
+ print(" probably not a .5 file\n");
+ errorexit();
+ }
+ if(o == ANAME || o == ASIGNAME) {
+ sig = 0;
+ if(o == ASIGNAME)
+ sig = Bget4(f);
+ v = Bgetc(f); /* type */
+ o = Bgetc(f); /* sym */
+ r = 0;
+ if(v == D_STATIC)
+ r = version;
+ name = Brdline(f, '\0');
+ if(name == nil) {
+ if(Blinelen(f) > 0) {
+ fprint(2, "%s: name too long\n", pn);
+ errorexit();
+ }
+ goto eof;
+ }
+ x = expandpkg(name, pkg);
+ s = lookup(x, r);
+ if(x != name)
+ free(x);
+
+ if(sig != 0){
+ if(s->sig != 0 && s->sig != sig)
+ diag("incompatible type signatures %ux(%s) and %ux(%s) for %s", s->sig, s->file, sig, pn, s->name);
+ s->sig = sig;
+ s->file = pn;
+ }
+
+ if(debug['W'])
+ print(" ANAME %s\n", s->name);
+ if(o < 0 || o >= nelem(h)) {
+ fprint(2, "%s: mangled input file\n", pn);
+ errorexit();
+ }
+ h[o] = s;
+ if((v == D_EXTERN || v == D_STATIC) && s->type == 0)
+ s->type = SXREF;
+ if(v == D_FILE) {
+ if(s->type != SFILE) {
+ histgen++;
+ s->type = SFILE;
+ s->value = histgen;
+ }
+ if(histfrogp < MAXHIST) {
+ histfrog[histfrogp] = s;
+ histfrogp++;
+ } else
+ collapsefrog(s);
+ }
+ goto loop;
+ }
+
+ p = mal(sizeof(Prog));
+ p->as = o;
+ p->scond = Bgetc(f);
+ p->reg = Bgetc(f);
+ p->line = Bget4(f);
+
+ zaddr(f, &p->from, h);
+ zaddr(f, &p->to, h);
+
+ if(p->as != ATEXT && p->as != AGLOBL && p->reg > NREG)
+ diag("register out of range %A %d", p->as, p->reg);
+
+ p->link = P;
+ p->cond = P;
+
+ if(debug['W'])
+ print("%P\n", p);
+
+ switch(o) {
+ case AHISTORY:
+ if(p->to.offset == -1) {
+ addlib(src, pn);
+ histfrogp = 0;
+ goto loop;
+ }
+ if(src[0] == '\0')
+ copyhistfrog(src, sizeof src);
+ addhist(p->line, D_FILE); /* 'z' */
+ if(p->to.offset)
+ addhist(p->to.offset, D_FILE1); /* 'Z' */
+ histfrogp = 0;
+ goto loop;
+
+ case AEND:
+ histtoauto();
+ if(cursym != nil && cursym->text)
+ cursym->autom = curauto;
+ curauto = 0;
+ cursym = nil;
+ if(Boffset(f) == eof)
+ return;
+ goto newloop;
+
+ case AGLOBL:
+ s = p->from.sym;
+ if(s == S) {
+ diag("GLOBL must have a name\n%P", p);
+ errorexit();
+ }
+ if(s->type == 0 || s->type == SXREF) {
+ s->type = SBSS;
+ s->value = 0;
+ }
+ if(s->type != SBSS) {
+ diag("redefinition: %s\n%P", s->name, p);
+ s->type = SBSS;
+ s->value = 0;
+ }
+ if(p->to.offset > s->size)
+ s->size = p->to.offset;
+ if(p->reg & DUPOK)
+ s->dupok = 1;
+ break;
+
+ case ADATA:
+ // Assume that AGLOBL comes after ADATA.
+ // If we've seen an AGLOBL that said this sym was DUPOK,
+ // ignore any more ADATA we see, which must be
+ // redefinitions.
+ s = p->from.sym;
+ if(s->dupok) {
+ if(debug['v'])
+ Bprint(&bso, "skipping %s in %s: dupok\n", s->name, pn);
+ goto loop;
+ }
+ if(s->file == nil)
+ s->file = pn;
+ else if(s->file != pn) {
+ diag("multiple initialization for %s: in both %s and %s", s->name, s->file, pn);
+ errorexit();
+ }
+ savedata(s, p, pn);
+ unmal(p, sizeof *p);
+ break;
+
+ case AGOK:
+ diag("unknown opcode\n%P", p);
+ p->pc = pc;
+ pc++;
+ break;
+
+ case ATEXT:
+ if(cursym != nil && cursym->text) {
+ histtoauto();
+ cursym->autom = curauto;
+ curauto = 0;
+ }
+ s = p->from.sym;
+ if(s == S) {
+ diag("TEXT must have a name\n%P", p);
+ errorexit();
+ }
+ cursym = s;
+ if(ntext++ == 0 && s->type != 0 && s->type != SXREF) {
+ /* redefinition, so file has probably been seen before */
+ if(debug['v'])
+ Bprint(&bso, "skipping: %s: redefinition: %s", pn, s->name);
+ return;
+ }
+ skip = 0;
+ if(s->type != 0 && s->type != SXREF) {
+ if(p->reg & DUPOK) {
+ skip = 1;
+ goto casedef;
+ }
+ diag("redefinition: %s\n%P", s->name, p);
+ }
+ if(etextp)
+ etextp->next = s;
+ else
+ textp = s;
+ etextp = s;
+ p->align = 4;
+ autosize = (p->to.offset+3L) & ~3L;
+ p->to.offset = autosize;
+ autosize += 4;
+ s->type = STEXT;
+ s->text = p;
+ s->value = pc;
+ lastp = p;
+ p->pc = pc;
+ pc++;
+ break;
+
+ case ASUB:
+ if(p->from.type == D_CONST)
+ if(p->from.name == D_NONE)
+ if(p->from.offset < 0) {
+ p->from.offset = -p->from.offset;
+ p->as = AADD;
+ }
+ goto casedef;
+
+ case AADD:
+ if(p->from.type == D_CONST)
+ if(p->from.name == D_NONE)
+ if(p->from.offset < 0) {
+ p->from.offset = -p->from.offset;
+ p->as = ASUB;
+ }
+ goto casedef;
+
+ case AMOVWD:
+ case AMOVWF:
+ case AMOVDW:
+ case AMOVFW:
+ case AMOVFD:
+ case AMOVDF:
+ // case AMOVF:
+ // case AMOVD:
+ case ACMPF:
+ case ACMPD:
+ case AADDF:
+ case AADDD:
+ case ASUBF:
+ case ASUBD:
+ case AMULF:
+ case AMULD:
+ case ADIVF:
+ case ADIVD:
+ goto casedef;
+
+ case AMOVF:
+ if(skip)
+ goto casedef;
+
+ if(p->from.type == D_FCONST && chipfloat(&p->from.ieee) < 0 &&
+ (chipzero(&p->from.ieee) < 0 || (p->scond & C_SCOND) != C_SCOND_NONE)) {
+ /* size sb 9 max */
+ sprint(literal, "$%ux", ieeedtof(&p->from.ieee));
+ s = lookup(literal, 0);
+ if(s->type == 0) {
+ s->type = SBSS;
+ adduint32(s, ieeedtof(&p->from.ieee));
+ s->reachable = 0;
+ }
+ p->from.type = D_OREG;
+ p->from.sym = s;
+ p->from.name = D_EXTERN;
+ p->from.offset = 0;
+ }
+ goto casedef;
+
+ case AMOVD:
+ if(skip)
+ goto casedef;
+
+ if(p->from.type == D_FCONST && chipfloat(&p->from.ieee) < 0 &&
+ (chipzero(&p->from.ieee) < 0 || (p->scond & C_SCOND) != C_SCOND_NONE)) {
+ /* size sb 18 max */
+ sprint(literal, "$%ux.%ux",
+ p->from.ieee.l, p->from.ieee.h);
+ s = lookup(literal, 0);
+ if(s->type == 0) {
+ s->type = SBSS;
+ adduint32(s, p->from.ieee.l);
+ adduint32(s, p->from.ieee.h);
+ s->reachable = 0;
+ }
+ p->from.type = D_OREG;
+ p->from.sym = s;
+ p->from.name = D_EXTERN;
+ p->from.offset = 0;
+ }
+ goto casedef;
+
+ default:
+ casedef:
+ if(skip)
+ nopout(p);
+ p->pc = pc;
+ pc++;
+ if(p->to.type == D_BRANCH)
+ p->to.offset += ipc;
+ if(lastp == nil) {
+ if(p->as != ANOP)
+ diag("unexpected instruction: %P", p);
+ break;
+ }
+ lastp->link = p;
+ lastp = p;
+ break;
+ }
+ goto loop;
+
+eof:
+ diag("truncated object file: %s", pn);
+}
+
+Prog*
+prg(void)
+{
+ Prog *p;
+
+ p = mal(sizeof(Prog));
+ *p = zprg;
+ return p;
+}
+
+Prog*
+appendp(Prog *q)
+{
+ Prog *p;
+
+ p = prg();
+ p->link = q->link;
+ q->link = p;
+ p->line = q->line;
+ return p;
+}
diff --git a/src/cmd/5l/optab.c b/src/cmd/5l/optab.c
new file mode 100644
index 000000000..514786f85
--- /dev/null
+++ b/src/cmd/5l/optab.c
@@ -0,0 +1,236 @@
+// Inferno utils/5l/optab.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/optab.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include "l.h"
+
+Optab optab[] =
+{
+ /* struct Optab:
+ OPCODE, from, prog->reg, to, type,size,param,flag */
+ { ATEXT, C_ADDR, C_NONE, C_LCON, 0, 0, 0 },
+ { ATEXT, C_ADDR, C_REG, C_LCON, 0, 0, 0 },
+
+ { AADD, C_REG, C_REG, C_REG, 1, 4, 0 },
+ { AADD, C_REG, C_NONE, C_REG, 1, 4, 0 },
+ { AMOVW, C_REG, C_NONE, C_REG, 1, 4, 0 },
+ { AMVN, C_REG, C_NONE, C_REG, 1, 4, 0 },
+ { ACMP, C_REG, C_REG, C_NONE, 1, 4, 0 },
+
+ { AADD, C_RCON, C_REG, C_REG, 2, 4, 0 },
+ { AADD, C_RCON, C_NONE, C_REG, 2, 4, 0 },
+ { AMOVW, C_RCON, C_NONE, C_REG, 2, 4, 0 },
+ { AMVN, C_RCON, C_NONE, C_REG, 2, 4, 0 },
+ { ACMP, C_RCON, C_REG, C_NONE, 2, 4, 0 },
+
+ { AADD, C_SHIFT,C_REG, C_REG, 3, 4, 0 },
+ { AADD, C_SHIFT,C_NONE, C_REG, 3, 4, 0 },
+ { AMVN, C_SHIFT,C_NONE, C_REG, 3, 4, 0 },
+ { ACMP, C_SHIFT,C_REG, C_NONE, 3, 4, 0 },
+
+ { AMOVW, C_RACON,C_NONE, C_REG, 4, 4, REGSP },
+
+ { AB, C_NONE, C_NONE, C_SBRA, 5, 4, 0, LPOOL },
+ { ABL, C_NONE, C_NONE, C_SBRA, 5, 4, 0 },
+ { ABX, C_NONE, C_NONE, C_SBRA, 74, 20, 0 },
+ { ABEQ, C_NONE, C_NONE, C_SBRA, 5, 4, 0 },
+
+ { AB, C_NONE, C_NONE, C_ROREG, 6, 4, 0, LPOOL },
+ { ABL, C_NONE, C_NONE, C_ROREG, 7, 8, 0 },
+ { ABX, C_NONE, C_NONE, C_ROREG, 75, 12, 0 },
+ { ABXRET, C_NONE, C_NONE, C_ROREG, 76, 4, 0 },
+
+ { ASLL, C_RCON, C_REG, C_REG, 8, 4, 0 },
+ { ASLL, C_RCON, C_NONE, C_REG, 8, 4, 0 },
+
+ { ASLL, C_REG, C_NONE, C_REG, 9, 4, 0 },
+ { ASLL, C_REG, C_REG, C_REG, 9, 4, 0 },
+
+ { ASWI, C_NONE, C_NONE, C_NONE, 10, 4, 0 },
+ { ASWI, C_NONE, C_NONE, C_LOREG, 10, 4, 0 },
+ { ASWI, C_NONE, C_NONE, C_LCON, 10, 4, 0 },
+
+ { AWORD, C_NONE, C_NONE, C_LCON, 11, 4, 0 },
+ { AWORD, C_NONE, C_NONE, C_ADDR, 11, 4, 0 },
+
+ { AMOVW, C_NCON, C_NONE, C_REG, 12, 4, 0 },
+ { AMOVW, C_LCON, C_NONE, C_REG, 12, 4, 0, LFROM },
+
+ { AADD, C_NCON, C_REG, C_REG, 13, 8, 0 },
+ { AADD, C_NCON, C_NONE, C_REG, 13, 8, 0 },
+ { AMVN, C_NCON, C_NONE, C_REG, 13, 8, 0 },
+ { ACMP, C_NCON, C_REG, C_NONE, 13, 8, 0 },
+ { AADD, C_LCON, C_REG, C_REG, 13, 8, 0, LFROM },
+ { AADD, C_LCON, C_NONE, C_REG, 13, 8, 0, LFROM },
+ { AMVN, C_LCON, C_NONE, C_REG, 13, 8, 0, LFROM },
+ { ACMP, C_LCON, C_REG, C_NONE, 13, 8, 0, LFROM },
+
+ { AMOVB, C_REG, C_NONE, C_REG, 14, 8, 0 },
+ { AMOVBU, C_REG, C_NONE, C_REG, 58, 4, 0 },
+ { AMOVH, C_REG, C_NONE, C_REG, 14, 8, 0 },
+ { AMOVHU, C_REG, C_NONE, C_REG, 14, 8, 0 },
+
+ { AMUL, C_REG, C_REG, C_REG, 15, 4, 0 },
+ { AMUL, C_REG, C_NONE, C_REG, 15, 4, 0 },
+
+ { ADIV, C_REG, C_REG, C_REG, 16, 4, 0 },
+ { ADIV, C_REG, C_NONE, C_REG, 16, 4, 0 },
+
+ { AMULL, C_REG, C_REG, C_REGREG, 17, 4, 0 },
+
+ { AMOVW, C_REG, C_NONE, C_SAUTO, 20, 4, REGSP },
+ { AMOVW, C_REG, C_NONE, C_SOREG, 20, 4, 0 },
+ { AMOVB, C_REG, C_NONE, C_SAUTO, 20, 4, REGSP },
+ { AMOVB, C_REG, C_NONE, C_SOREG, 20, 4, 0 },
+ { AMOVBU, C_REG, C_NONE, C_SAUTO, 20, 4, REGSP },
+ { AMOVBU, C_REG, C_NONE, C_SOREG, 20, 4, 0 },
+
+ { AMOVW, C_SAUTO,C_NONE, C_REG, 21, 4, REGSP },
+ { AMOVW, C_SOREG,C_NONE, C_REG, 21, 4, 0 },
+ { AMOVBU, C_SAUTO,C_NONE, C_REG, 21, 4, REGSP },
+ { AMOVBU, C_SOREG,C_NONE, C_REG, 21, 4, 0 },
+
+ { AMOVW, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO },
+ { AMOVW, C_REG, C_NONE, C_LOREG, 30, 8, 0, LTO },
+ { AMOVW, C_REG, C_NONE, C_ADDR, 64, 8, 0, LTO },
+ { AMOVB, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO },
+ { AMOVB, C_REG, C_NONE, C_LOREG, 30, 8, 0, LTO },
+ { AMOVB, C_REG, C_NONE, C_ADDR, 64, 8, 0, LTO },
+ { AMOVBU, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO },
+ { AMOVBU, C_REG, C_NONE, C_LOREG, 30, 8, 0, LTO },
+ { AMOVBU, C_REG, C_NONE, C_ADDR, 64, 8, 0, LTO },
+
+ { AMOVW, C_LAUTO,C_NONE, C_REG, 31, 8, REGSP, LFROM },
+ { AMOVW, C_LOREG,C_NONE, C_REG, 31, 8, 0, LFROM },
+ { AMOVW, C_ADDR, C_NONE, C_REG, 65, 8, 0, LFROM },
+ { AMOVBU, C_LAUTO,C_NONE, C_REG, 31, 8, REGSP, LFROM },
+ { AMOVBU, C_LOREG,C_NONE, C_REG, 31, 8, 0, LFROM },
+ { AMOVBU, C_ADDR, C_NONE, C_REG, 65, 8, 0, LFROM },
+
+ { AMOVW, C_LACON,C_NONE, C_REG, 34, 8, REGSP, LFROM },
+
+ { AMOVW, C_PSR, C_NONE, C_REG, 35, 4, 0 },
+ { AMOVW, C_REG, C_NONE, C_PSR, 36, 4, 0 },
+ { AMOVW, C_RCON, C_NONE, C_PSR, 37, 4, 0 },
+
+ { AMOVM, C_LCON, C_NONE, C_SOREG, 38, 4, 0 },
+ { AMOVM, C_SOREG,C_NONE, C_LCON, 39, 4, 0 },
+
+ { ASWPW, C_SOREG,C_REG, C_REG, 40, 4, 0 },
+
+ { ARFE, C_NONE, C_NONE, C_NONE, 41, 4, 0 },
+
+ { AMOVF, C_FREG, C_NONE, C_FAUTO, 50, 4, REGSP },
+ { AMOVF, C_FREG, C_NONE, C_FOREG, 50, 4, 0 },
+
+ { AMOVF, C_FAUTO,C_NONE, C_FREG, 51, 4, REGSP },
+ { AMOVF, C_FOREG,C_NONE, C_FREG, 51, 4, 0 },
+
+ { AMOVF, C_FREG, C_NONE, C_LAUTO, 52, 12, REGSP, LTO },
+ { AMOVF, C_FREG, C_NONE, C_LOREG, 52, 12, 0, LTO },
+
+ { AMOVF, C_LAUTO,C_NONE, C_FREG, 53, 12, REGSP, LFROM },
+ { AMOVF, C_LOREG,C_NONE, C_FREG, 53, 12, 0, LFROM },
+
+ { AMOVF, C_FREG, C_NONE, C_ADDR, 68, 8, 0, LTO },
+ { AMOVF, C_ADDR, C_NONE, C_FREG, 69, 8, 0, LFROM },
+
+ { AADDF, C_FREG, C_NONE, C_FREG, 54, 4, 0 },
+ { AADDF, C_FREG, C_REG, C_FREG, 54, 4, 0 },
+ { AMOVF, C_FREG, C_NONE, C_FREG, 54, 4, 0 },
+
+ { AMOVW, C_REG, C_NONE, C_FCR, 56, 4, 0 },
+ { AMOVW, C_FCR, C_NONE, C_REG, 57, 4, 0 },
+
+ { AMOVW, C_SHIFT,C_NONE, C_REG, 59, 4, 0 },
+ { AMOVBU, C_SHIFT,C_NONE, C_REG, 59, 4, 0 },
+
+ { AMOVB, C_SHIFT,C_NONE, C_REG, 60, 4, 0 },
+
+ { AMOVW, C_REG, C_NONE, C_SHIFT, 61, 4, 0 },
+ { AMOVB, C_REG, C_NONE, C_SHIFT, 61, 4, 0 },
+ { AMOVBU, C_REG, C_NONE, C_SHIFT, 61, 4, 0 },
+
+ { ACASE, C_REG, C_NONE, C_NONE, 62, 4, 0 },
+ { ABCASE, C_NONE, C_NONE, C_SBRA, 63, 4, 0 },
+
+ { AMOVH, C_REG, C_NONE, C_HAUTO, 70, 4, REGSP, 0 },
+ { AMOVH, C_REG, C_NONE, C_HOREG, 70, 4, 0, 0 },
+ { AMOVHU, C_REG, C_NONE, C_HAUTO, 70, 4, REGSP, 0 },
+ { AMOVHU, C_REG, C_NONE, C_HOREG, 70, 4, 0, 0 },
+
+ { AMOVB, C_HAUTO,C_NONE, C_REG, 71, 4, REGSP, 0 },
+ { AMOVB, C_HOREG,C_NONE, C_REG, 71, 4, 0, 0 },
+ { AMOVH, C_HAUTO,C_NONE, C_REG, 71, 4, REGSP, 0 },
+ { AMOVH, C_HOREG,C_NONE, C_REG, 71, 4, 0, 0 },
+ { AMOVHU, C_HAUTO,C_NONE, C_REG, 71, 4, REGSP, 0 },
+ { AMOVHU, C_HOREG,C_NONE, C_REG, 71, 4, 0, 0 },
+
+ { AMOVH, C_REG, C_NONE, C_LAUTO, 72, 8, REGSP, LTO },
+ { AMOVH, C_REG, C_NONE, C_LOREG, 72, 8, 0, LTO },
+ { AMOVH, C_REG, C_NONE, C_ADDR, 94, 8, 0, LTO },
+ { AMOVHU, C_REG, C_NONE, C_LAUTO, 72, 8, REGSP, LTO },
+ { AMOVHU, C_REG, C_NONE, C_LOREG, 72, 8, 0, LTO },
+ { AMOVHU, C_REG, C_NONE, C_ADDR, 94, 8, 0, LTO },
+
+ { AMOVB, C_LAUTO,C_NONE, C_REG, 73, 8, REGSP, LFROM },
+ { AMOVB, C_LOREG,C_NONE, C_REG, 73, 8, 0, LFROM },
+ { AMOVB, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM },
+ { AMOVH, C_LAUTO,C_NONE, C_REG, 73, 8, REGSP, LFROM },
+ { AMOVH, C_LOREG,C_NONE, C_REG, 73, 8, 0, LFROM },
+ { AMOVH, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM },
+ { AMOVHU, C_LAUTO,C_NONE, C_REG, 73, 8, REGSP, LFROM },
+ { AMOVHU, C_LOREG,C_NONE, C_REG, 73, 8, 0, LFROM },
+ { AMOVHU, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM },
+
+ { ALDREX, C_SOREG,C_NONE, C_REG, 77, 4, 0 },
+ { ASTREX, C_SOREG,C_REG, C_REG, 78, 4, 0 },
+
+ { AMOVF, C_ZFCON,C_NONE, C_FREG, 80, 8, 0 },
+ { AMOVF, C_SFCON,C_NONE, C_FREG, 81, 4, 0 },
+
+ { ACMPF, C_FREG, C_REG, C_NONE, 82, 8, 0 },
+ { ACMPF, C_FREG, C_NONE, C_NONE, 83, 8, 0 },
+
+ { AMOVFW, C_FREG, C_NONE, C_FREG, 84, 4, 0 },
+ { AMOVWF, C_FREG, C_NONE, C_FREG, 85, 4, 0 },
+
+ { AMOVFW, C_FREG, C_NONE, C_REG, 86, 8, 0 },
+ { AMOVWF, C_REG, C_NONE, C_FREG, 87, 8, 0 },
+
+ { AMOVW, C_REG, C_NONE, C_FREG, 88, 4, 0 },
+ { AMOVW, C_FREG, C_NONE, C_REG, 89, 4, 0 },
+
+ { ATST, C_REG, C_NONE, C_NONE, 90, 4, 0 },
+
+ { ALDREXD, C_SOREG,C_NONE, C_REG, 91, 4, 0 },
+ { ASTREXD, C_SOREG,C_REG, C_REG, 92, 4, 0 },
+
+ { AXXX, C_NONE, C_NONE, C_NONE, 0, 4, 0 },
+};
diff --git a/src/cmd/5l/pass.c b/src/cmd/5l/pass.c
new file mode 100644
index 000000000..c43049459
--- /dev/null
+++ b/src/cmd/5l/pass.c
@@ -0,0 +1,332 @@
+// Inferno utils/5l/pass.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/pass.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Code and data passes.
+
+#include "l.h"
+#include "../ld/lib.h"
+
+static void xfol(Prog*, Prog**);
+
+Prog*
+brchain(Prog *p)
+{
+ int i;
+
+ for(i=0; i<20; i++) {
+ if(p == P || p->as != AB)
+ return p;
+ p = p->cond;
+ }
+ return P;
+}
+
+int
+relinv(int a)
+{
+ switch(a) {
+ case ABEQ: return ABNE;
+ case ABNE: return ABEQ;
+ case ABCS: return ABCC;
+ case ABHS: return ABLO;
+ case ABCC: return ABCS;
+ case ABLO: return ABHS;
+ case ABMI: return ABPL;
+ case ABPL: return ABMI;
+ case ABVS: return ABVC;
+ case ABVC: return ABVS;
+ case ABHI: return ABLS;
+ case ABLS: return ABHI;
+ case ABGE: return ABLT;
+ case ABLT: return ABGE;
+ case ABGT: return ABLE;
+ case ABLE: return ABGT;
+ }
+ diag("unknown relation: %s", anames[a]);
+ return a;
+}
+
+void
+follow(void)
+{
+ Prog *firstp, *lastp;
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f follow\n", cputime());
+ Bflush(&bso);
+
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ firstp = prg();
+ lastp = firstp;
+ xfol(cursym->text, &lastp);
+ lastp->link = nil;
+ cursym->text = firstp->link;
+ }
+}
+
+static void
+xfol(Prog *p, Prog **last)
+{
+ Prog *q, *r;
+ int a, i;
+
+loop:
+ if(p == P)
+ return;
+ a = p->as;
+ if(a == AB) {
+ q = p->cond;
+ if(q != P && q->as != ATEXT) {
+ p->mark |= FOLL;
+ p = q;
+ if(!(p->mark & FOLL))
+ goto loop;
+ }
+ }
+ if(p->mark & FOLL) {
+ for(i=0,q=p; i<4; i++,q=q->link) {
+ if(q == *last || q == nil)
+ break;
+ a = q->as;
+ if(a == ANOP) {
+ i--;
+ continue;
+ }
+ if(a == AB || (a == ARET && q->scond == 14) || a == ARFE)
+ goto copy;
+ if(q->cond == P || (q->cond->mark&FOLL))
+ continue;
+ if(a != ABEQ && a != ABNE)
+ continue;
+ copy:
+ for(;;) {
+ r = prg();
+ *r = *p;
+ if(!(r->mark&FOLL))
+ print("cant happen 1\n");
+ r->mark |= FOLL;
+ if(p != q) {
+ p = p->link;
+ (*last)->link = r;
+ *last = r;
+ continue;
+ }
+ (*last)->link = r;
+ *last = r;
+ if(a == AB || (a == ARET && q->scond == 14) || a == ARFE)
+ return;
+ r->as = ABNE;
+ if(a == ABNE)
+ r->as = ABEQ;
+ r->cond = p->link;
+ r->link = p->cond;
+ if(!(r->link->mark&FOLL))
+ xfol(r->link, last);
+ if(!(r->cond->mark&FOLL))
+ print("cant happen 2\n");
+ return;
+ }
+ }
+ a = AB;
+ q = prg();
+ q->as = a;
+ q->line = p->line;
+ q->to.type = D_BRANCH;
+ q->to.offset = p->pc;
+ q->cond = p;
+ p = q;
+ }
+ p->mark |= FOLL;
+ (*last)->link = p;
+ *last = p;
+ if(a == AB || (a == ARET && p->scond == 14) || a == ARFE){
+ return;
+ }
+ if(p->cond != P)
+ if(a != ABL && a != ABX && p->link != P) {
+ q = brchain(p->link);
+ if(a != ATEXT && a != ABCASE)
+ if(q != P && (q->mark&FOLL)) {
+ p->as = relinv(a);
+ p->link = p->cond;
+ p->cond = q;
+ }
+ xfol(p->link, last);
+ q = brchain(p->cond);
+ if(q == P)
+ q = p->cond;
+ if(q->mark&FOLL) {
+ p->cond = q;
+ return;
+ }
+ p = q;
+ goto loop;
+ }
+ p = p->link;
+ goto loop;
+}
+
+void
+patch(void)
+{
+ int32 c, vexit;
+ Prog *p, *q;
+ Sym *s;
+ int a;
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f patch\n", cputime());
+ Bflush(&bso);
+ mkfwd();
+ s = lookup("exit", 0);
+ vexit = s->value;
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ for(p = cursym->text; p != P; p = p->link) {
+ a = p->as;
+ if((a == ABL || a == ABX || a == AB || a == ARET) &&
+ p->to.type != D_BRANCH && p->to.sym != S) {
+ s = p->to.sym;
+ switch(s->type) {
+ default:
+ diag("undefined: %s", s->name);
+ s->type = STEXT;
+ s->value = vexit;
+ continue; // avoid more error messages
+ case STEXT:
+ p->to.offset = s->value;
+ p->to.type = D_BRANCH;
+ break;
+ }
+ }
+ if(p->to.type != D_BRANCH)
+ continue;
+ c = p->to.offset;
+ for(q = textp->text; q != P;) {
+ if(c == q->pc)
+ break;
+ if(q->forwd != P && c >= q->forwd->pc)
+ q = q->forwd;
+ else
+ q = q->link;
+ }
+ if(q == P) {
+ diag("branch out of range %d\n%P", c, p);
+ p->to.type = D_NONE;
+ }
+ p->cond = q;
+ }
+ }
+
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ for(p = cursym->text; p != P; p = p->link) {
+ if(p->cond != P) {
+ p->cond = brloop(p->cond);
+ if(p->cond != P)
+ if(p->to.type == D_BRANCH)
+ p->to.offset = p->cond->pc;
+ }
+ }
+ }
+}
+
+Prog*
+brloop(Prog *p)
+{
+ Prog *q;
+ int c;
+
+ for(c=0; p!=P;) {
+ if(p->as != AB)
+ return p;
+ q = p->cond;
+ if(q <= p) {
+ c++;
+ if(q == p || c > 5000)
+ break;
+ }
+ p = q;
+ }
+ return P;
+}
+
+int32
+atolwhex(char *s)
+{
+ int32 n;
+ int f;
+
+ n = 0;
+ f = 0;
+ while(*s == ' ' || *s == '\t')
+ s++;
+ if(*s == '-' || *s == '+') {
+ if(*s++ == '-')
+ f = 1;
+ while(*s == ' ' || *s == '\t')
+ s++;
+ }
+ if(s[0]=='0' && s[1]){
+ if(s[1]=='x' || s[1]=='X'){
+ s += 2;
+ for(;;){
+ if(*s >= '0' && *s <= '9')
+ n = n*16 + *s++ - '0';
+ else if(*s >= 'a' && *s <= 'f')
+ n = n*16 + *s++ - 'a' + 10;
+ else if(*s >= 'A' && *s <= 'F')
+ n = n*16 + *s++ - 'A' + 10;
+ else
+ break;
+ }
+ } else
+ while(*s >= '0' && *s <= '7')
+ n = n*8 + *s++ - '0';
+ } else
+ while(*s >= '0' && *s <= '9')
+ n = n*10 + *s++ - '0';
+ if(f)
+ n = -n;
+ return n;
+}
+
+int32
+rnd(int32 v, int32 r)
+{
+ int32 c;
+
+ if(r <= 0)
+ return v;
+ v += r - 1;
+ c = v % r;
+ if(c < 0)
+ c += r;
+ v -= c;
+ return v;
+}
diff --git a/src/cmd/5l/prof.c b/src/cmd/5l/prof.c
new file mode 100644
index 000000000..225a52435
--- /dev/null
+++ b/src/cmd/5l/prof.c
@@ -0,0 +1,211 @@
+// Inferno utils/5l/obj.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/obj.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Profiling.
+
+#include "l.h"
+#include "../ld/lib.h"
+
+void
+doprof1(void)
+{
+#ifdef NOTDEF // TODO(rsc)
+ Sym *s;
+ int32 n;
+ Prog *p, *q;
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f profile 1\n", cputime());
+ Bflush(&bso);
+ s = lookup("__mcount", 0);
+ n = 1;
+ for(p = firstp->link; p != P; p = p->link) {
+ if(p->as == ATEXT) {
+ q = prg();
+ q->line = p->line;
+ q->link = datap;
+ datap = q;
+ q->as = ADATA;
+ q->from.type = D_OREG;
+ q->from.name = D_EXTERN;
+ q->from.offset = n*4;
+ q->from.sym = s;
+ q->reg = 4;
+ q->to = p->from;
+ q->to.type = D_CONST;
+
+ q = prg();
+ q->line = p->line;
+ q->pc = p->pc;
+ q->link = p->link;
+ p->link = q;
+ p = q;
+ p->as = AMOVW;
+ p->from.type = D_OREG;
+ p->from.name = D_EXTERN;
+ p->from.sym = s;
+ p->from.offset = n*4 + 4;
+ p->to.type = D_REG;
+ p->to.reg = REGTMP;
+
+ q = prg();
+ q->line = p->line;
+ q->pc = p->pc;
+ q->link = p->link;
+ p->link = q;
+ p = q;
+ p->as = AADD;
+ p->from.type = D_CONST;
+ p->from.offset = 1;
+ p->to.type = D_REG;
+ p->to.reg = REGTMP;
+
+ q = prg();
+ q->line = p->line;
+ q->pc = p->pc;
+ q->link = p->link;
+ p->link = q;
+ p = q;
+ p->as = AMOVW;
+ p->from.type = D_REG;
+ p->from.reg = REGTMP;
+ p->to.type = D_OREG;
+ p->to.name = D_EXTERN;
+ p->to.sym = s;
+ p->to.offset = n*4 + 4;
+
+ n += 2;
+ continue;
+ }
+ }
+ q = prg();
+ q->line = 0;
+ q->link = datap;
+ datap = q;
+
+ q->as = ADATA;
+ q->from.type = D_OREG;
+ q->from.name = D_EXTERN;
+ q->from.sym = s;
+ q->reg = 4;
+ q->to.type = D_CONST;
+ q->to.offset = n;
+
+ s->type = SBSS;
+ s->value = n*4;
+#endif
+}
+
+void
+doprof2(void)
+{
+ Sym *s2, *s4;
+ Prog *p, *q, *ps2, *ps4;
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f profile 2\n", cputime());
+ Bflush(&bso);
+ s2 = lookup("_profin", 0);
+ s4 = lookup("_profout", 0);
+ if(s2->type != STEXT || s4->type != STEXT) {
+ diag("_profin/_profout not defined");
+ return;
+ }
+ ps2 = P;
+ ps4 = P;
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ p = cursym->text;
+ if(cursym == s2) {
+ ps2 = p;
+ p->reg = 1;
+ }
+ if(cursym == s4) {
+ ps4 = p;
+ p->reg = 1;
+ }
+ }
+ for(cursym = textp; cursym != nil; cursym = cursym->next)
+ for(p = cursym->text; p != P; p = p->link) {
+ if(p->as == ATEXT) {
+ if(p->reg & NOPROF) {
+ for(;;) {
+ q = p->link;
+ if(q == P)
+ break;
+ if(q->as == ATEXT)
+ break;
+ p = q;
+ }
+ continue;
+ }
+
+ /*
+ * BL profin, R2
+ */
+ q = prg();
+ q->line = p->line;
+ q->pc = p->pc;
+ q->link = p->link;
+ p->link = q;
+ p = q;
+ p->as = ABL;
+ p->to.type = D_BRANCH;
+ p->cond = ps2;
+ p->to.sym = s2;
+
+ continue;
+ }
+ if(p->as == ARET) {
+ /*
+ * RET
+ */
+ q = prg();
+ q->as = ARET;
+ q->from = p->from;
+ q->to = p->to;
+ q->link = p->link;
+ p->link = q;
+
+ /*
+ * BL profout
+ */
+ p->as = ABL;
+ p->from = zprg.from;
+ p->to = zprg.to;
+ p->to.type = D_BRANCH;
+ p->cond = ps4;
+ p->to.sym = s4;
+
+ p = q;
+
+ continue;
+ }
+ }
+}
diff --git a/src/cmd/5l/softfloat.c b/src/cmd/5l/softfloat.c
new file mode 100644
index 000000000..4f799d17e
--- /dev/null
+++ b/src/cmd/5l/softfloat.c
@@ -0,0 +1,89 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#define EXTERN
+#include "l.h"
+#include "../ld/lib.h"
+
+// Software floating point.
+
+void
+softfloat(void)
+{
+ Prog *p, *next, *psfloat;
+ Sym *symsfloat;
+ int wasfloat;
+
+ if(!debug['F'])
+ return;
+
+ symsfloat = lookup("_sfloat", 0);
+ psfloat = P;
+ if(symsfloat->type == STEXT)
+ psfloat = symsfloat->text;
+
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ wasfloat = 0;
+ for(p = cursym->text; p != P; p = p->link)
+ if(p->cond != P)
+ p->cond->mark |= LABEL;
+ for(p = cursym->text; p != P; p = p->link) {
+ switch(p->as) {
+ case AMOVW:
+ if(p->to.type == D_FREG || p->from.type == D_FREG)
+ goto soft;
+ goto notsoft;
+
+ case AMOVWD:
+ case AMOVWF:
+ case AMOVDW:
+ case AMOVFW:
+ case AMOVFD:
+ case AMOVDF:
+ case AMOVF:
+ case AMOVD:
+
+ case ACMPF:
+ case ACMPD:
+ case AADDF:
+ case AADDD:
+ case ASUBF:
+ case ASUBD:
+ case AMULF:
+ case AMULD:
+ case ADIVF:
+ case ADIVD:
+ case ASQRTF:
+ case ASQRTD:
+ goto soft;
+
+ default:
+ goto notsoft;
+
+ soft:
+ if (psfloat == P)
+ diag("floats used with _sfloat not defined");
+ if (!wasfloat || (p->mark&LABEL)) {
+ next = prg();
+ *next = *p;
+
+ // BL _sfloat(SB)
+ *p = zprg;
+ p->link = next;
+ p->as = ABL;
+ p->to.type = D_BRANCH;
+ p->to.sym = symsfloat;
+ p->cond = psfloat;
+
+ p = next;
+ wasfloat = 1;
+ }
+ break;
+
+ notsoft:
+ wasfloat = 0;
+ }
+ }
+ }
+}
diff --git a/src/cmd/5l/span.c b/src/cmd/5l/span.c
new file mode 100644
index 000000000..2e1232a1a
--- /dev/null
+++ b/src/cmd/5l/span.c
@@ -0,0 +1,885 @@
+// Inferno utils/5l/span.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/span.c
+//
+// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// Portions Copyright © 1997-1999 Vita Nuova Limited
+// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// Portions Copyright © 2004,2006 Bruce Ellis
+// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Instruction layout.
+
+#include "l.h"
+#include "../ld/lib.h"
+
+static struct {
+ uint32 start;
+ uint32 size;
+ uint32 extra;
+} pool;
+
+int checkpool(Prog*, int);
+int flushpool(Prog*, int, int);
+
+int
+isbranch(Prog *p)
+{
+ int as = p->as;
+ return (as >= ABEQ && as <= ABLE) || as == AB || as == ABL || as == ABX;
+}
+
+static int
+scan(Prog *op, Prog *p, int c)
+{
+ Prog *q;
+
+ for(q = op->link; q != p && q != P; q = q->link){
+ q->pc = c;
+ c += oplook(q)->size;
+ nocache(q);
+ }
+ return c;
+}
+
+/* size of a case statement including jump table */
+static int32
+casesz(Prog *p)
+{
+ int jt = 0;
+ int32 n = 0;
+ Optab *o;
+
+ for( ; p != P; p = p->link){
+ if(p->as == ABCASE)
+ jt = 1;
+ else if(jt)
+ break;
+ o = oplook(p);
+ n += o->size;
+ }
+ return n;
+}
+
+void
+span(void)
+{
+ Prog *p, *op;
+ Optab *o;
+ int m, bflag, i, v;
+ int32 c, otxt, out[6];
+ Section *sect;
+ uchar *bp;
+
+ if(debug['v'])
+ Bprint(&bso, "%5.2f span\n", cputime());
+ Bflush(&bso);
+
+ bflag = 0;
+ c = INITTEXT;
+ otxt = c;
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ p = cursym->text;
+ p->pc = c;
+ cursym->value = c;
+
+ autosize = p->to.offset + 4;
+ if(p->from.sym != S)
+ p->from.sym->value = c;
+ /* need passes to resolve branches */
+ if(c-otxt >= 1L<<17)
+ bflag = 1;
+ otxt = c;
+
+ for(op = p, p = p->link; p != P; op = p, p = p->link) {
+ curp = p;
+ p->pc = c;
+ o = oplook(p);
+ m = o->size;
+ // must check literal pool here in case p generates many instructions
+ if(blitrl){
+ if(checkpool(op, p->as == ACASE ? casesz(p) : m))
+ c = p->pc = scan(op, p, c);
+ }
+ if(m == 0) {
+ diag("zero-width instruction\n%P", p);
+ continue;
+ }
+ switch(o->flag & (LFROM|LTO|LPOOL)) {
+ case LFROM:
+ addpool(p, &p->from);
+ break;
+ case LTO:
+ addpool(p, &p->to);
+ break;
+ case LPOOL:
+ if ((p->scond&C_SCOND) == 14)
+ flushpool(p, 0, 0);
+ break;
+ }
+ if(p->as==AMOVW && p->to.type==D_REG && p->to.reg==REGPC && (p->scond&C_SCOND) == 14)
+ flushpool(p, 0, 0);
+ c += m;
+ }
+ if(blitrl){
+ if(checkpool(op, 0))
+ c = scan(op, P, c);
+ }
+ cursym->size = c - cursym->value;
+ }
+
+ /*
+ * if any procedure is large enough to
+ * generate a large SBRA branch, then
+ * generate extra passes putting branches
+ * around jmps to fix. this is rare.
+ */
+ while(bflag) {
+ if(debug['v'])
+ Bprint(&bso, "%5.2f span1\n", cputime());
+ bflag = 0;
+ c = INITTEXT;
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ cursym->value = c;
+ for(p = cursym->text; p != P; p = p->link) {
+ curp = p;
+ p->pc = c;
+ o = oplook(p);
+/* very large branches
+ if(o->type == 6 && p->cond) {
+ otxt = p->cond->pc - c;
+ if(otxt < 0)
+ otxt = -otxt;
+ if(otxt >= (1L<<17) - 10) {
+ q = prg();
+ q->link = p->link;
+ p->link = q;
+ q->as = AB;
+ q->to.type = D_BRANCH;
+ q->cond = p->cond;
+ p->cond = q;
+ q = prg();
+ q->link = p->link;
+ p->link = q;
+ q->as = AB;
+ q->to.type = D_BRANCH;
+ q->cond = q->link->link;
+ bflag = 1;
+ }
+ }
+ */
+ m = o->size;
+ if(m == 0) {
+ if(p->as == ATEXT) {
+ autosize = p->to.offset + 4;
+ if(p->from.sym != S)
+ p->from.sym->value = c;
+ continue;
+ }
+ diag("zero-width instruction\n%P", p);
+ continue;
+ }
+ c += m;
+ }
+ cursym->size = c - cursym->value;
+ }
+ }
+
+ c = rnd(c, 8);
+
+ /*
+ * lay out the code. all the pc-relative code references,
+ * even cross-function, are resolved now;
+ * only data references need to be relocated.
+ * with more work we could leave cross-function
+ * code references to be relocated too, and then
+ * perhaps we'd be able to parallelize the span loop above.
+ */
+ for(cursym = textp; cursym != nil; cursym = cursym->next) {
+ p = cursym->text;
+ autosize = p->to.offset + 4;
+ symgrow(cursym, cursym->size);
+
+ bp = cursym->p;
+ for(p = p->link; p != P; p = p->link) {
+ pc = p->pc;
+ curp = p;
+ o = oplook(p);
+ asmout(p, o, out);
+ for(i=0; i<o->size/4; i++) {
+ v = out[i];
+ *bp++ = v;
+ *bp++ = v>>8;
+ *bp++ = v>>16;
+ *bp++ = v>>24;
+ }
+ }
+ }
+ sect = addsection(&segtext, ".text", 05);
+ sect->vaddr = INITTEXT;
+ sect->len = c - INITTEXT;
+}
+
+/*
+ * when the first reference to the literal pool threatens
+ * to go out of range of a 12-bit PC-relative offset,
+ * drop the pool now, and branch round it.
+ * this happens only in extended basic blocks that exceed 4k.
+ */
+int
+checkpool(Prog *p, int sz)
+{
+ if(pool.size >= 0xffc || immaddr((p->pc+sz+4)+4+pool.size - pool.start+8) == 0)
+ return flushpool(p, 1, 0);
+ else if(p->link == P)
+ return flushpool(p, 2, 0);
+ return 0;
+}
+
+int
+flushpool(Prog *p, int skip, int force)
+{
+ Prog *q;
+
+ if(blitrl) {
+ if(skip){
+ if(0 && skip==1)print("note: flush literal pool at %ux: len=%ud ref=%ux\n", p->pc+4, pool.size, pool.start);
+ q = prg();
+ q->as = AB;
+ q->to.type = D_BRANCH;
+ q->cond = p->link;
+ q->link = blitrl;
+ blitrl = q;
+ }
+ else if(!force && (p->pc+pool.size-pool.start < 2048))
+ return 0;
+ elitrl->link = p->link;
+ p->link = blitrl;
+ blitrl = 0; /* BUG: should refer back to values until out-of-range */
+ elitrl = 0;
+ pool.size = 0;
+ pool.start = 0;
+ pool.extra = 0;
+ return 1;
+ }
+ return 0;
+}
+
+void
+addpool(Prog *p, Adr *a)
+{
+ Prog *q, t;
+ int c;
+
+ c = aclass(a);
+
+ t = zprg;
+ t.as = AWORD;
+
+ switch(c) {
+ default:
+ t.to = *a;
+ break;
+
+ case C_SROREG:
+ case C_LOREG:
+ case C_ROREG:
+ case C_FOREG:
+ case C_SOREG:
+ case C_HOREG:
+ case C_FAUTO:
+ case C_SAUTO:
+ case C_LAUTO:
+ case C_LACON:
+ t.to.type = D_CONST;
+ t.to.offset = instoffset;
+ break;
+ }
+
+ for(q = blitrl; q != P; q = q->link) /* could hash on t.t0.offset */
+ if(memcmp(&q->to, &t.to, sizeof(t.to)) == 0) {
+ p->cond = q;
+ return;
+ }
+
+ q = prg();
+ *q = t;
+ q->pc = pool.size;
+
+ if(blitrl == P) {
+ blitrl = q;
+ pool.start = p->pc;
+ q->align = 4;
+ } else
+ elitrl->link = q;
+ elitrl = q;
+ pool.size += 4;
+
+ p->cond = q;
+}
+
+void
+xdefine(char *p, int t, int32 v)
+{
+ Sym *s;
+
+ s = lookup(p, 0);
+ s->type = t;
+ s->value = v;
+ s->reachable = 1;
+ s->special = 1;
+}
+
+int32
+regoff(Adr *a)
+{
+
+ instoffset = 0;
+ aclass(a);
+ return instoffset;
+}
+
+int32
+immrot(uint32 v)
+{
+ int i;
+
+ for(i=0; i<16; i++) {
+ if((v & ~0xff) == 0)
+ return (i<<8) | v | (1<<25);
+ v = (v<<2) | (v>>30);
+ }
+ return 0;
+}
+
+int32
+immaddr(int32 v)
+{
+ if(v >= 0 && v <= 0xfff)
+ return (v & 0xfff) |
+ (1<<24) | /* pre indexing */
+ (1<<23); /* pre indexing, up */
+ if(v >= -0xfff && v < 0)
+ return (-v & 0xfff) |
+ (1<<24); /* pre indexing */
+ return 0;
+}
+
+int
+immfloat(int32 v)
+{
+ return (v & 0xC03) == 0; /* offset will fit in floating-point load/store */
+}
+
+int
+immhalf(int32 v)
+{
+ if(v >= 0 && v <= 0xff)
+ return v|
+ (1<<24)| /* pre indexing */
+ (1<<23); /* pre indexing, up */
+ if(v >= -0xff && v < 0)
+ return (-v & 0xff)|
+ (1<<24); /* pre indexing */
+ return 0;
+}
+
+int32
+symaddr(Sym *s)
+{
+ int32 v;
+
+ v = s->value;
+ switch(s->type) {
+ default:
+ diag("unexpected type %d in symaddr(%s)", s->type, s->name);
+ return 0;
+
+ case STEXT:
+ case SELFROSECT:
+ case SRODATA:
+ case SDATA:
+ case SBSS:
+ case SCONST:
+ break;
+ }
+ return v;
+}
+
+int
+aclass(Adr *a)
+{
+ Sym *s;
+ int t;
+
+ switch(a->type) {
+ case D_NONE:
+ return C_NONE;
+
+ case D_REG:
+ return C_REG;
+
+ case D_REGREG:
+ return C_REGREG;
+
+ case D_SHIFT:
+ return C_SHIFT;
+
+ case D_FREG:
+ return C_FREG;
+
+ case D_FPCR:
+ return C_FCR;
+
+ case D_OREG:
+ switch(a->name) {
+ case D_EXTERN:
+ case D_STATIC:
+ if(a->sym == 0 || a->sym->name == 0) {
+ print("null sym external\n");
+ print("%D\n", a);
+ return C_GOK;
+ }
+ instoffset = 0; // s.b. unused but just in case
+ return C_ADDR;
+
+ case D_AUTO:
+ instoffset = autosize + a->offset;
+ t = immaddr(instoffset);
+ if(t){
+ if(immhalf(instoffset))
+ return immfloat(t) ? C_HFAUTO : C_HAUTO;
+ if(immfloat(t))
+ return C_FAUTO;
+ return C_SAUTO;
+ }
+ return C_LAUTO;
+
+ case D_PARAM:
+ instoffset = autosize + a->offset + 4L;
+ t = immaddr(instoffset);
+ if(t){
+ if(immhalf(instoffset))
+ return immfloat(t) ? C_HFAUTO : C_HAUTO;
+ if(immfloat(t))
+ return C_FAUTO;
+ return C_SAUTO;
+ }
+ return C_LAUTO;
+ case D_NONE:
+ instoffset = a->offset;
+ t = immaddr(instoffset);
+ if(t) {
+ if(immhalf(instoffset)) /* n.b. that it will also satisfy immrot */
+ return immfloat(t) ? C_HFOREG : C_HOREG;
+ if(immfloat(t))
+ return C_FOREG; /* n.b. that it will also satisfy immrot */
+ t = immrot(instoffset);
+ if(t)
+ return C_SROREG;
+ if(immhalf(instoffset))
+ return C_HOREG;
+ return C_SOREG;
+ }
+ t = immrot(instoffset);
+ if(t)
+ return C_ROREG;
+ return C_LOREG;
+ }
+ return C_GOK;
+
+ case D_PSR:
+ return C_PSR;
+
+ case D_OCONST:
+ switch(a->name) {
+ case D_EXTERN:
+ case D_STATIC:
+ instoffset = 0; // s.b. unused but just in case
+ return C_ADDR;
+ }
+ return C_GOK;
+
+ case D_FCONST:
+ if(chipzero(&a->ieee) >= 0)
+ return C_ZFCON;
+ if(chipfloat(&a->ieee) >= 0)
+ return C_SFCON;
+ return C_LFCON;
+
+ case D_CONST:
+ case D_CONST2:
+ switch(a->name) {
+
+ case D_NONE:
+ instoffset = a->offset;
+ if(a->reg != NREG)
+ goto aconsize;
+
+ t = immrot(instoffset);
+ if(t)
+ return C_RCON;
+ t = immrot(~instoffset);
+ if(t)
+ return C_NCON;
+ return C_LCON;
+
+ case D_EXTERN:
+ case D_STATIC:
+ s = a->sym;
+ if(s == S)
+ break;
+ instoffset = 0; // s.b. unused but just in case
+ return C_LCON;
+
+ case D_AUTO:
+ instoffset = autosize + a->offset;
+ goto aconsize;
+
+ case D_PARAM:
+ instoffset = autosize + a->offset + 4L;
+ aconsize:
+ t = immrot(instoffset);
+ if(t)
+ return C_RACON;
+ return C_LACON;
+ }
+ return C_GOK;
+
+ case D_BRANCH:
+ return C_SBRA;
+ }
+ return C_GOK;
+}
+
+Optab*
+oplook(Prog *p)
+{
+ int a1, a2, a3, r;
+ char *c1, *c3;
+ Optab *o, *e;
+
+ a1 = p->optab;
+ if(a1)
+ return optab+(a1-1);
+ a1 = p->from.class;
+ if(a1 == 0) {
+ a1 = aclass(&p->from) + 1;
+ p->from.class = a1;
+ }
+ a1--;
+ a3 = p->to.class;
+ if(a3 == 0) {
+ a3 = aclass(&p->to) + 1;
+ p->to.class = a3;
+ }
+ a3--;
+ a2 = C_NONE;
+ if(p->reg != NREG)
+ a2 = C_REG;
+ r = p->as;
+ o = oprange[r].start;
+ if(o == 0) {
+ a1 = opcross[repop[r]][a1][a2][a3];
+ if(a1) {
+ p->optab = a1+1;
+ return optab+a1;
+ }
+ o = oprange[r].stop; /* just generate an error */
+ }
+ if(debug['O']) {
+ print("oplook %A %O %O %O\n",
+ (int)p->as, a1, a2, a3);
+ print(" %d %d\n", p->from.type, p->to.type);
+ }
+ e = oprange[r].stop;
+ c1 = xcmp[a1];
+ c3 = xcmp[a3];
+ for(; o<e; o++)
+ if(o->a2 == a2)
+ if(c1[o->a1])
+ if(c3[o->a3]) {
+ p->optab = (o-optab)+1;
+ return o;
+ }
+ diag("illegal combination %A %O %O %O, %d %d",
+ p->as, a1, a2, a3, p->from.type, p->to.type);
+ prasm(p);
+ if(o == 0)
+ o = optab;
+ return o;
+}
+
+int
+cmp(int a, int b)
+{
+
+ if(a == b)
+ return 1;
+ switch(a) {
+ case C_LCON:
+ if(b == C_RCON || b == C_NCON)
+ return 1;
+ break;
+ case C_LACON:
+ if(b == C_RACON)
+ return 1;
+ break;
+ case C_LFCON:
+ if(b == C_ZFCON || b == C_SFCON)
+ return 1;
+ break;
+
+ case C_HFAUTO:
+ return b == C_HAUTO || b == C_FAUTO;
+ case C_FAUTO:
+ case C_HAUTO:
+ return b == C_HFAUTO;
+ case C_SAUTO:
+ return cmp(C_HFAUTO, b);
+ case C_LAUTO:
+ return cmp(C_SAUTO, b);
+
+ case C_HFOREG:
+ return b == C_HOREG || b == C_FOREG;
+ case C_FOREG:
+ case C_HOREG:
+ return b == C_HFOREG;
+ case C_SROREG:
+ return cmp(C_SOREG, b) || cmp(C_ROREG, b);
+ case C_SOREG:
+ case C_ROREG:
+ return b == C_SROREG || cmp(C_HFOREG, b);
+ case C_LOREG:
+ return cmp(C_SROREG, b);
+
+ case C_LBRA:
+ if(b == C_SBRA)
+ return 1;
+ break;
+
+ case C_HREG:
+ return cmp(C_SP, b) || cmp(C_PC, b);
+
+ }
+ return 0;
+}
+
+int
+ocmp(const void *a1, const void *a2)
+{
+ Optab *p1, *p2;
+ int n;
+
+ p1 = (Optab*)a1;
+ p2 = (Optab*)a2;
+ n = p1->as - p2->as;
+ if(n)
+ return n;
+ n = p1->a1 - p2->a1;
+ if(n)
+ return n;
+ n = p1->a2 - p2->a2;
+ if(n)
+ return n;
+ n = p1->a3 - p2->a3;
+ if(n)
+ return n;
+ return 0;
+}
+
+void
+buildop(void)
+{
+ int i, n, r;
+
+ for(i=0; i<C_GOK; i++)
+ for(n=0; n<C_GOK; n++)
+ xcmp[i][n] = cmp(n, i);
+ for(n=0; optab[n].as != AXXX; n++)
+ ;
+ qsort(optab, n, sizeof(optab[0]), ocmp);
+ for(i=0; i<n; i++) {
+ r = optab[i].as;
+ oprange[r].start = optab+i;
+ while(optab[i].as == r)
+ i++;
+ oprange[r].stop = optab+i;
+ i--;
+
+ switch(r)
+ {
+ default:
+ diag("unknown op in build: %A", r);
+ errorexit();
+ case AADD:
+ oprange[AAND] = oprange[r];
+ oprange[AEOR] = oprange[r];
+ oprange[ASUB] = oprange[r];
+ oprange[ARSB] = oprange[r];
+ oprange[AADC] = oprange[r];
+ oprange[ASBC] = oprange[r];
+ oprange[ARSC] = oprange[r];
+ oprange[AORR] = oprange[r];
+ oprange[ABIC] = oprange[r];
+ break;
+ case ACMP:
+ oprange[ATEQ] = oprange[r];
+ oprange[ACMN] = oprange[r];
+ break;
+ case AMVN:
+ break;
+ case ABEQ:
+ oprange[ABNE] = oprange[r];
+ oprange[ABCS] = oprange[r];
+ oprange[ABHS] = oprange[r];
+ oprange[ABCC] = oprange[r];
+ oprange[ABLO] = oprange[r];
+ oprange[ABMI] = oprange[r];
+ oprange[ABPL] = oprange[r];
+ oprange[ABVS] = oprange[r];
+ oprange[ABVC] = oprange[r];
+ oprange[ABHI] = oprange[r];
+ oprange[ABLS] = oprange[r];
+ oprange[ABGE] = oprange[r];
+ oprange[ABLT] = oprange[r];
+ oprange[ABGT] = oprange[r];
+ oprange[ABLE] = oprange[r];
+ break;
+ case ASLL:
+ oprange[ASRL] = oprange[r];
+ oprange[ASRA] = oprange[r];
+ break;
+ case AMUL:
+ oprange[AMULU] = oprange[r];
+ break;
+ case ADIV:
+ oprange[AMOD] = oprange[r];
+ oprange[AMODU] = oprange[r];
+ oprange[ADIVU] = oprange[r];
+ break;
+ case AMOVW:
+ case AMOVB:
+ case AMOVBU:
+ case AMOVH:
+ case AMOVHU:
+ break;
+ case ASWPW:
+ oprange[ASWPBU] = oprange[r];
+ break;
+ case AB:
+ case ABL:
+ case ABX:
+ case ABXRET:
+ case ASWI:
+ case AWORD:
+ case AMOVM:
+ case ARFE:
+ case ATEXT:
+ case ACASE:
+ case ABCASE:
+ break;
+ case AADDF:
+ oprange[AADDD] = oprange[r];
+ oprange[ASUBF] = oprange[r];
+ oprange[ASUBD] = oprange[r];
+ oprange[AMULF] = oprange[r];
+ oprange[AMULD] = oprange[r];
+ oprange[ADIVF] = oprange[r];
+ oprange[ADIVD] = oprange[r];
+ oprange[ASQRTF] = oprange[r];
+ oprange[ASQRTD] = oprange[r];
+ oprange[AMOVFD] = oprange[r];
+ oprange[AMOVDF] = oprange[r];
+ break;
+
+ case ACMPF:
+ oprange[ACMPD] = oprange[r];
+ break;
+
+ case AMOVF:
+ oprange[AMOVD] = oprange[r];
+ break;
+
+ case AMOVFW:
+ oprange[AMOVDW] = oprange[r];
+ break;
+
+ case AMOVWF:
+ oprange[AMOVWD] = oprange[r];
+ break;
+
+ case AMULL:
+ oprange[AMULA] = oprange[r];
+ oprange[AMULAL] = oprange[r];
+ oprange[AMULLU] = oprange[r];
+ oprange[AMULALU] = oprange[r];
+ break;
+
+ case ALDREX:
+ case ASTREX:
+ case ALDREXD:
+ case ASTREXD:
+ case ATST:
+ break;
+ }
+ }
+}
+
+/*
+void
+buildrep(int x, int as)
+{
+ Opcross *p;
+ Optab *e, *s, *o;
+ int a1, a2, a3, n;
+
+ if(C_NONE != 0 || C_REG != 1 || C_GOK >= 32 || x >= nelem(opcross)) {
+ diag("assumptions fail in buildrep");
+ errorexit();
+ }
+ repop[as] = x;
+ p = (opcross + x);
+ s = oprange[as].start;
+ e = oprange[as].stop;
+ for(o=e-1; o>=s; o--) {
+ n = o-optab;
+ for(a2=0; a2<2; a2++) {
+ if(a2) {
+ if(o->a2 == C_NONE)
+ continue;
+ } else
+ if(o->a2 != C_NONE)
+ continue;
+ for(a1=0; a1<32; a1++) {
+ if(!xcmp[a1][o->a1])
+ continue;
+ for(a3=0; a3<32; a3++)
+ if(xcmp[a3][o->a3])
+ (*p)[a1][a2][a3] = n;
+ }
+ }
+ }
+ oprange[as].start = 0;
+}
+*/
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-24 10:35:34 +0000