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-rw-r--r--src/libmach/5db.c1095
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diff --git a/src/libmach/5db.c b/src/libmach/5db.c
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index ae71dd90d..000000000
--- a/src/libmach/5db.c
+++ /dev/null
@@ -1,1095 +0,0 @@
-// Inferno libmach/5db.c
-// http://code.google.com/p/inferno-os/source/browse/utils/libmach/5db.c
-//
-// Copyright © 1994-1999 Lucent Technologies Inc.
-// Power PC support Copyright © 1995-2004 C H Forsyth (forsyth@terzarima.net).
-// Portions Copyright © 1997-1999 Vita Nuova Limited.
-// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com).
-// Revisions Copyright © 2000-2004 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 "ureg_arm.h"
-#include <mach.h>
-
-static int debug = 0;
-
-#define BITS(a, b) ((1<<(b+1))-(1<<a))
-
-#define LSR(v, s) ((ulong)(v) >> (s))
-#define ASR(v, s) ((long)(v) >> (s))
-#define ROR(v, s) (LSR((v), (s)) | (((v) & ((1 << (s))-1)) << (32 - (s))))
-
-
-
-typedef struct Instr Instr;
-struct Instr
-{
- Map *map;
- ulong w;
- ulong addr;
- uchar op; /* super opcode */
-
- uchar cond; /* bits 28-31 */
- uchar store; /* bit 20 */
-
- uchar rd; /* bits 12-15 */
- uchar rn; /* bits 16-19 */
- uchar rs; /* bits 0-11 (shifter operand) */
-
- long imm; /* rotated imm */
- char* curr; /* fill point in buffer */
- char* end; /* end of buffer */
- char* err; /* error message */
-};
-
-typedef struct Opcode Opcode;
-struct Opcode
-{
- char* o;
- void (*fmt)(Opcode*, Instr*);
- ulong (*foll)(Map*, Rgetter, Instr*, ulong);
- char* a;
-};
-
-static void format(char*, Instr*, char*);
-static char FRAMENAME[] = ".frame";
-
-/*
- * Arm-specific debugger interface
- */
-
-extern char *armexcep(Map*, Rgetter);
-static int armfoll(Map*, uvlong, Rgetter, uvlong*);
-static int arminst(Map*, uvlong, char, char*, int);
-static int armdas(Map*, uvlong, char*, int);
-static int arminstlen(Map*, uvlong);
-
-/*
- * Debugger interface
- */
-Machdata armmach =
-{
- {0, 0, 0, 0xD}, /* break point */
- 4, /* break point size */
-
- leswab, /* short to local byte order */
- leswal, /* long to local byte order */
- leswav, /* long to local byte order */
- risctrace, /* C traceback */
- riscframe, /* Frame finder */
- armexcep, /* print exception */
- 0, /* breakpoint fixup */
- 0, /* single precision float printer */
- 0, /* double precision float printer */
- armfoll, /* following addresses */
- arminst, /* print instruction */
- armdas, /* dissembler */
- arminstlen, /* instruction size */
-};
-
-char*
-armexcep(Map *map, Rgetter rget)
-{
- long c;
-
- c = (*rget)(map, "TYPE");
- switch (c&0x1f) {
- case 0x11:
- return "Fiq interrupt";
- case 0x12:
- return "Mirq interrupt";
- case 0x13:
- return "SVC/SWI Exception";
- case 0x17:
- return "Prefetch Abort/Data Abort";
- case 0x18:
- return "Data Abort";
- case 0x1b:
- return "Undefined instruction/Breakpoint";
- case 0x1f:
- return "Sys trap";
- default:
- return "Undefined trap";
- }
-}
-
-static
-char* cond[16] =
-{
- "EQ", "NE", "CS", "CC",
- "MI", "PL", "VS", "VC",
- "HI", "LS", "GE", "LT",
- "GT", "LE", 0, "NV"
-};
-
-static
-char* shtype[4] =
-{
- "<<", ">>", "->", "@>"
-};
-
-static
-char *hb[4] =
-{
- "???", "HU", "B", "H"
-};
-
-static
-char* addsub[2] =
-{
- "-", "+",
-};
-
-int
-armclass(long w)
-{
- int op;
-
- op = (w >> 25) & 0x7;
- switch(op) {
- case 0: /* data processing r,r,r */
- op = ((w >> 4) & 0xf);
- if(op == 0x9) {
- op = 48+16; /* mul */
- if(w & (1<<24)) {
- op += 2;
- if(w & (1<<22))
- op++; /* swap */
- break;
- }
- if(w & (1<<21))
- op++; /* mla */
- break;
- }
- if ((op & 0x9) == 0x9) /* ld/st byte/half s/u */
- {
- op = (48+16+4) + ((w >> 22) & 0x1) + ((w >> 19) & 0x2);
- break;
- }
- op = (w >> 21) & 0xf;
- if(w & (1<<4))
- op += 32;
- else
- if(w & (31<<7))
- op += 16;
- break;
- case 1: /* data processing i,r,r */
- op = (48) + ((w >> 21) & 0xf);
- break;
- case 2: /* load/store byte/word i(r) */
- op = (48+24) + ((w >> 22) & 0x1) + ((w >> 19) & 0x2);
- break;
- case 3: /* load/store byte/word (r)(r) */
- op = (48+24+4) + ((w >> 22) & 0x1) + ((w >> 19) & 0x2);
- break;
- case 4: /* block data transfer (r)(r) */
- op = (48+24+4+4) + ((w >> 20) & 0x1);
- break;
- case 5: /* branch / branch link */
- op = (48+24+4+4+2) + ((w >> 24) & 0x1);
- break;
- case 7: /* coprocessor crap */
- op = (48+24+4+4+2+2) + ((w >> 3) & 0x2) + ((w >> 20) & 0x1);
- break;
- default:
- op = (48+24+4+4+2+2+4);
- break;
- }
- return op;
-}
-
-static int
-decode(Map *map, ulong pc, Instr *i)
-{
- uint32 w;
-
- if(get4(map, pc, &w) < 0) {
- werrstr("can't read instruction: %r");
- return -1;
- }
- i->w = w;
- i->addr = pc;
- i->cond = (w >> 28) & 0xF;
- i->op = armclass(w);
- i->map = map;
- return 1;
-}
-
-static void
-bprint(Instr *i, char *fmt, ...)
-{
- va_list arg;
-
- va_start(arg, fmt);
- i->curr = vseprint(i->curr, i->end, fmt, arg);
- va_end(arg);
-}
-
-static int
-plocal(Instr *i)
-{
- char *reg;
- Symbol s;
- char *fn;
- int class;
- int offset;
-
- if(!findsym(i->addr, CTEXT, &s)) {
- if(debug)fprint(2,"fn not found @%lux: %r\n", i->addr);
- return 0;
- }
- fn = s.name;
- if (!findlocal(&s, FRAMENAME, &s)) {
- if(debug)fprint(2,"%s.%s not found @%s: %r\n", fn, FRAMENAME, s.name);
- return 0;
- }
- if(s.value > i->imm) {
- class = CAUTO;
- offset = s.value-i->imm;
- reg = "(SP)";
- } else {
- class = CPARAM;
- offset = i->imm-s.value-4;
- reg = "(FP)";
- }
- if(!getauto(&s, offset, class, &s)) {
- if(debug)fprint(2,"%s %s not found @%ux: %r\n", fn,
- class == CAUTO ? " auto" : "param", offset);
- return 0;
- }
- bprint(i, "%s%c%d%s", s.name, class == CPARAM ? '+' : '-', s.value, reg);
- return 1;
-}
-
-/*
- * Print value v as name[+offset]
- */
-int
-gsymoff(char *buf, int n, long v, int space)
-{
- Symbol s;
- int r;
- long delta;
-
- r = delta = 0; /* to shut compiler up */
- if (v) {
- r = findsym(v, space, &s);
- if (r)
- delta = v-s.value;
- if (delta < 0)
- delta = -delta;
- }
- if (v == 0 || r == 0 || delta >= 4096)
- return snprint(buf, n, "#%lux", v);
- if (strcmp(s.name, ".string") == 0)
- return snprint(buf, n, "#%lux", v);
- if (!delta)
- return snprint(buf, n, "%s", s.name);
- if (s.type != 't' && s.type != 'T')
- return snprint(buf, n, "%s+%llux", s.name, v-s.value);
- else
- return snprint(buf, n, "#%lux", v);
-}
-
-static void
-armdps(Opcode *o, Instr *i)
-{
- i->store = (i->w >> 20) & 1;
- i->rn = (i->w >> 16) & 0xf;
- i->rd = (i->w >> 12) & 0xf;
- i->rs = (i->w >> 0) & 0xf;
- if(i->rn == 15 && i->rs == 0) {
- if(i->op == 8) {
- format("MOVW", i,"CPSR, R%d");
- return;
- } else
- if(i->op == 10) {
- format("MOVW", i,"SPSR, R%d");
- return;
- }
- } else
- if(i->rn == 9 && i->rd == 15) {
- if(i->op == 9) {
- format("MOVW", i, "R%s, CPSR");
- return;
- } else
- if(i->op == 11) {
- format("MOVW", i, "R%s, SPSR");
- return;
- }
- }
- format(o->o, i, o->a);
-}
-
-static void
-armdpi(Opcode *o, Instr *i)
-{
- ulong v;
- int c;
-
- v = (i->w >> 0) & 0xff;
- c = (i->w >> 8) & 0xf;
- while(c) {
- v = (v<<30) | (v>>2);
- c--;
- }
- i->imm = v;
- i->store = (i->w >> 20) & 1;
- i->rn = (i->w >> 16) & 0xf;
- i->rd = (i->w >> 12) & 0xf;
- i->rs = i->w&0x0f;
-
- /* RET is encoded as ADD #0,R14,R15 */
- if((i->w & 0x0fffffff) == 0x028ef000){
- format("RET%C", i, "");
- return;
- }
- if((i->w & 0x0ff0ffff) == 0x0280f000){
- format("B%C", i, "0(R%n)");
- return;
- }
- format(o->o, i, o->a);
-}
-
-static void
-armsdti(Opcode *o, Instr *i)
-{
- ulong v;
-
- v = i->w & 0xfff;
- if(!(i->w & (1<<23)))
- v = -v;
- i->store = ((i->w >> 23) & 0x2) | ((i->w >>21) & 0x1);
- i->imm = v;
- i->rn = (i->w >> 16) & 0xf;
- i->rd = (i->w >> 12) & 0xf;
- /* RET is encoded as LW.P x,R13,R15 */
- if ((i->w & 0x0ffff000) == 0x049df000)
- {
- format("RET%C%p", i, "%I");
- return;
- }
- format(o->o, i, o->a);
-}
-
-/* arm V4 ld/st halfword, signed byte */
-static void
-armhwby(Opcode *o, Instr *i)
-{
- i->store = ((i->w >> 23) & 0x2) | ((i->w >>21) & 0x1);
- i->imm = (i->w & 0xf) | ((i->w >> 8) & 0xf);
- if (!(i->w & (1 << 23)))
- i->imm = - i->imm;
- i->rn = (i->w >> 16) & 0xf;
- i->rd = (i->w >> 12) & 0xf;
- i->rs = (i->w >> 0) & 0xf;
- format(o->o, i, o->a);
-}
-
-static void
-armsdts(Opcode *o, Instr *i)
-{
- i->store = ((i->w >> 23) & 0x2) | ((i->w >>21) & 0x1);
- i->rs = (i->w >> 0) & 0xf;
- i->rn = (i->w >> 16) & 0xf;
- i->rd = (i->w >> 12) & 0xf;
- format(o->o, i, o->a);
-}
-
-static void
-armbdt(Opcode *o, Instr *i)
-{
- i->store = (i->w >> 21) & 0x3; /* S & W bits */
- i->rn = (i->w >> 16) & 0xf;
- i->imm = i->w & 0xffff;
- if(i->w == 0xe8fd8000)
- format("RFE", i, "");
- else
- format(o->o, i, o->a);
-}
-
-/*
-static void
-armund(Opcode *o, Instr *i)
-{
- format(o->o, i, o->a);
-}
-
-static void
-armcdt(Opcode *o, Instr *i)
-{
- format(o->o, i, o->a);
-}
-*/
-
-static void
-armunk(Opcode *o, Instr *i)
-{
- format(o->o, i, o->a);
-}
-
-static void
-armb(Opcode *o, Instr *i)
-{
- ulong v;
-
- v = i->w & 0xffffff;
- if(v & 0x800000)
- v |= ~0xffffff;
- i->imm = (v<<2) + i->addr + 8;
- format(o->o, i, o->a);
-}
-
-static void
-armco(Opcode *o, Instr *i) /* coprocessor instructions */
-{
- int op, p, cp;
-
- char buf[1024];
-
- i->rn = (i->w >> 16) & 0xf;
- i->rd = (i->w >> 12) & 0xf;
- i->rs = i->w&0xf;
- cp = (i->w >> 8) & 0xf;
- p = (i->w >> 5) & 0x7;
- if(i->w&(1<<4)) {
- op = (i->w >> 21) & 0x07;
- snprint(buf, sizeof(buf), "#%x, #%x, R%d, C(%d), C(%d), #%x\n", cp, op, i->rd, i->rn, i->rs, p);
- } else {
- op = (i->w >> 20) & 0x0f;
- snprint(buf, sizeof(buf), "#%x, #%x, C(%d), C(%d), C(%d), #%x\n", cp, op, i->rd, i->rn, i->rs, p);
- }
- format(o->o, i, buf);
-}
-
-static int
-armcondpass(Map *map, Rgetter rget, uchar cond)
-{
- ulong psr;
- uchar n;
- uchar z;
- uchar c;
- uchar v;
-
- psr = rget(map, "PSR");
- n = (psr >> 31) & 1;
- z = (psr >> 30) & 1;
- c = (psr >> 29) & 1;
- v = (psr >> 28) & 1;
-
- switch(cond) {
- case 0: return z;
- case 1: return !z;
- case 2: return c;
- case 3: return !c;
- case 4: return n;
- case 5: return !n;
- case 6: return v;
- case 7: return !v;
- case 8: return c && !z;
- case 9: return !c || z;
- case 10: return n == v;
- case 11: return n != v;
- case 12: return !z && (n == v);
- case 13: return z && (n != v);
- case 14: return 1;
- case 15: return 0;
- }
- return 0;
-}
-
-static ulong
-armshiftval(Map *map, Rgetter rget, Instr *i)
-{
- if(i->w & (1 << 25)) { /* immediate */
- ulong imm = i->w & BITS(0, 7);
- ulong s = (i->w & BITS(8, 11)) >> 7; /* this contains the *2 */
- return ROR(imm, s);
- } else {
- char buf[8];
- ulong v;
- ulong s = (i->w & BITS(7,11)) >> 7;
-
- sprint(buf, "R%ld", i->w & 0xf);
- v = rget(map, buf);
-
- switch((i->w & BITS(4, 6)) >> 4) {
- case 0: /* LSLIMM */
- return v << s;
- case 1: /* LSLREG */
- sprint(buf, "R%lud", s >> 1);
- s = rget(map, buf) & 0xFF;
- if(s >= 32) return 0;
- return v << s;
- case 2: /* LSRIMM */
- return LSR(v, s);
- case 3: /* LSRREG */
- sprint(buf, "R%ld", s >> 1);
- s = rget(map, buf) & 0xFF;
- if(s >= 32) return 0;
- return LSR(v, s);
- case 4: /* ASRIMM */
- if(s == 0) {
- if((v & (1U<<31)) == 0)
- return 0;
- return 0xFFFFFFFF;
- }
- return ASR(v, s);
- case 5: /* ASRREG */
- sprint(buf, "R%ld", s >> 1);
- s = rget(map, buf) & 0xFF;
- if(s >= 32) {
- if((v & (1U<<31)) == 0)
- return 0;
- return 0xFFFFFFFF;
- }
- return ASR(v, s);
- case 6: /* RORIMM */
- if(s == 0) {
- ulong c = (rget(map, "PSR") >> 29) & 1;
-
- return (c << 31) | LSR(v, 1);
- }
- return ROR(v, s);
- case 7: /* RORREG */
- sprint(buf, "R%ld", (s>>1)&0xF);
- s = rget(map, buf);
- if(s == 0 || (s & 0xF) == 0)
- return v;
- return ROR(v, s & 0xF);
- }
- }
- return 0;
-}
-
-static int
-nbits(ulong v)
-{
- int n = 0;
- int i;
-
- for(i=0; i < 32 ; i++) {
- if(v & 1) ++n;
- v >>= 1;
- }
-
- return n;
-}
-
-static ulong
-armmaddr(Map *map, Rgetter rget, Instr *i)
-{
- ulong v;
- ulong nb;
- char buf[8];
- ulong rn;
-
- rn = (i->w >> 16) & 0xf;
- sprint(buf,"R%ld", rn);
-
- v = rget(map, buf);
- nb = nbits(i->w & ((1 << 15) - 1));
-
- switch((i->w >> 23) & 3) {
- case 0: return (v - (nb*4)) + 4;
- case 1: return v;
- case 2: return v - (nb*4);
- case 3: return v + 4;
- }
- return 0;
-}
-
-static ulong
-armaddr(Map *map, Rgetter rget, Instr *i)
-{
- char buf[8];
- ulong rn;
-
- sprint(buf, "R%ld", (i->w >> 16) & 0xf);
- rn = rget(map, buf);
-
- if((i->w & (1<<24)) == 0) { /* POSTIDX */
- sprint(buf, "R%ld", rn);
- return rget(map, buf);
- }
-
- if((i->w & (1<<25)) == 0) { /* OFFSET */
- sprint(buf, "R%ld", rn);
- if(i->w & (1U<<23))
- return rget(map, buf) + (i->w & BITS(0,11));
- return rget(map, buf) - (i->w & BITS(0,11));
- } else { /* REGOFF */
- ulong index = 0;
- uchar c;
- uchar rm;
-
- sprint(buf, "R%ld", i->w & 0xf);
- rm = rget(map, buf);
-
- switch((i->w & BITS(5,6)) >> 5) {
- case 0: index = rm << ((i->w & BITS(7,11)) >> 7); break;
- case 1: index = LSR(rm, ((i->w & BITS(7,11)) >> 7)); break;
- case 2: index = ASR(rm, ((i->w & BITS(7,11)) >> 7)); break;
- case 3:
- if((i->w & BITS(7,11)) == 0) {
- c = (rget(map, "PSR") >> 29) & 1;
- index = c << 31 | LSR(rm, 1);
- } else {
- index = ROR(rm, ((i->w & BITS(7,11)) >> 7));
- }
- break;
- }
- if(i->w & (1<<23))
- return rn + index;
- return rn - index;
- }
-}
-
-static ulong
-armfadd(Map *map, Rgetter rget, Instr *i, ulong pc)
-{
- char buf[8];
- int r;
-
- r = (i->w >> 12) & 0xf;
- if(r != 15 || !armcondpass(map, rget, (i->w >> 28) & 0xf))
- return pc+4;
-
- r = (i->w >> 16) & 0xf;
- sprint(buf, "R%d", r);
-
- return rget(map, buf) + armshiftval(map, rget, i);
-}
-
-static ulong
-armfmovm(Map *map, Rgetter rget, Instr *i, ulong pc)
-{
- uint32 v;
- ulong addr;
-
- v = i->w & 1<<15;
- if(!v || !armcondpass(map, rget, (i->w>>28)&0xf))
- return pc+4;
-
- addr = armmaddr(map, rget, i) + nbits(i->w & BITS(0,15));
- if(get4(map, addr, &v) < 0) {
- werrstr("can't read addr: %r");
- return -1;
- }
- return v;
-}
-
-static ulong
-armfbranch(Map *map, Rgetter rget, Instr *i, ulong pc)
-{
- if(!armcondpass(map, rget, (i->w >> 28) & 0xf))
- return pc+4;
-
- return pc + (((signed long)i->w << 8) >> 6) + 8;
-}
-
-static ulong
-armfmov(Map *map, Rgetter rget, Instr *i, ulong pc)
-{
- ulong rd;
- uint32 v;
-
- rd = (i->w >> 12) & 0xf;
- if(rd != 15 || !armcondpass(map, rget, (i->w>>28)&0xf))
- return pc+4;
-
- /* LDR */
- /* BUG: Needs LDH/B, too */
- if(((i->w>>26)&0x3) == 1) {
- if(get4(map, armaddr(map, rget, i), &v) < 0) {
- werrstr("can't read instruction: %r");
- return pc+4;
- }
- return v;
- }
-
- /* MOV */
- return armshiftval(map, rget, i);
-}
-
-static Opcode opcodes[] =
-{
- "AND%C%S", armdps, 0, "R%s,R%n,R%d",
- "EOR%C%S", armdps, 0, "R%s,R%n,R%d",
- "SUB%C%S", armdps, 0, "R%s,R%n,R%d",
- "RSB%C%S", armdps, 0, "R%s,R%n,R%d",
- "ADD%C%S", armdps, armfadd, "R%s,R%n,R%d",
- "ADC%C%S", armdps, 0, "R%s,R%n,R%d",
- "SBC%C%S", armdps, 0, "R%s,R%n,R%d",
- "RSC%C%S", armdps, 0, "R%s,R%n,R%d",
- "TST%C%S", armdps, 0, "R%s,R%n",
- "TEQ%C%S", armdps, 0, "R%s,R%n",
- "CMP%C%S", armdps, 0, "R%s,R%n",
- "CMN%C%S", armdps, 0, "R%s,R%n",
- "ORR%C%S", armdps, 0, "R%s,R%n,R%d",
- "MOVW%C%S", armdps, armfmov, "R%s,R%d",
- "BIC%C%S", armdps, 0, "R%s,R%n,R%d",
- "MVN%C%S", armdps, 0, "R%s,R%d",
-
-/* 16 */
- "AND%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "EOR%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "SUB%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "RSB%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "ADD%C%S", armdps, armfadd, "(R%s%h%m),R%n,R%d",
- "ADC%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "SBC%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "RSC%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "TST%C%S", armdps, 0, "(R%s%h%m),R%n",
- "TEQ%C%S", armdps, 0, "(R%s%h%m),R%n",
- "CMP%C%S", armdps, 0, "(R%s%h%m),R%n",
- "CMN%C%S", armdps, 0, "(R%s%h%m),R%n",
- "ORR%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "MOVW%C%S", armdps, armfmov, "(R%s%h%m),R%d",
- "BIC%C%S", armdps, 0, "(R%s%h%m),R%n,R%d",
- "MVN%C%S", armdps, 0, "(R%s%h%m),R%d",
-
-/* 32 */
- "AND%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "EOR%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "SUB%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "RSB%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "ADD%C%S", armdps, armfadd, "(R%s%hR%M),R%n,R%d",
- "ADC%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "SBC%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "RSC%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "TST%C%S", armdps, 0, "(R%s%hR%M),R%n",
- "TEQ%C%S", armdps, 0, "(R%s%hR%M),R%n",
- "CMP%C%S", armdps, 0, "(R%s%hR%M),R%n",
- "CMN%C%S", armdps, 0, "(R%s%hR%M),R%n",
- "ORR%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "MOVW%C%S", armdps, armfmov, "(R%s%hR%M),R%d",
- "BIC%C%S", armdps, 0, "(R%s%hR%M),R%n,R%d",
- "MVN%C%S", armdps, 0, "(R%s%hR%M),R%d",
-
-/* 48 */
- "AND%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "EOR%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "SUB%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "RSB%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "ADD%C%S", armdpi, armfadd, "$#%i,R%n,R%d",
- "ADC%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "SBC%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "RSC%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "TST%C%S", armdpi, 0, "$#%i,R%n",
- "TEQ%C%S", armdpi, 0, "$#%i,R%n",
- "CMP%C%S", armdpi, 0, "$#%i,R%n",
- "CMN%C%S", armdpi, 0, "$#%i,R%n",
- "ORR%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "MOVW%C%S", armdpi, armfmov, "$#%i,R%d",
- "BIC%C%S", armdpi, 0, "$#%i,R%n,R%d",
- "MVN%C%S", armdpi, 0, "$#%i,R%d",
-
-/* 48+16 */
- "MUL%C%S", armdpi, 0, "R%s,R%M,R%n",
- "MULA%C%S", armdpi, 0, "R%s,R%M,R%n,R%d",
- "SWPW", armdpi, 0, "R%s,(R%n),R%d",
- "SWPB", armdpi, 0, "R%s,(R%n),R%d",
-
-/* 48+16+4 */
- "MOV%u%C%p", armhwby, 0, "R%d,(R%n%UR%M)",
- "MOV%u%C%p", armhwby, 0, "R%d,%I",
- "MOV%u%C%p", armhwby, armfmov, "(R%n%UR%M),R%d",
- "MOV%u%C%p", armhwby, armfmov, "%I,R%d",
-
-/* 48+24 */
- "MOVW%C%p", armsdti, 0, "R%d,%I",
- "MOVB%C%p", armsdti, 0, "R%d,%I",
- "MOVW%C%p", armsdti, armfmov, "%I,R%d",
- "MOVBU%C%p", armsdti, armfmov, "%I,R%d",
-
- "MOVW%C%p", armsdts, 0, "R%d,(R%s%h%m)(R%n)",
- "MOVB%C%p", armsdts, 0, "R%d,(R%s%h%m)(R%n)",
- "MOVW%C%p", armsdts, armfmov, "(R%s%h%m)(R%n),R%d",
- "MOVBU%C%p", armsdts, armfmov, "(R%s%h%m)(R%n),R%d",
-
- "MOVM%C%P%a", armbdt, armfmovm, "[%r],(R%n)",
- "MOVM%C%P%a", armbdt, armfmovm, "(R%n),[%r]",
-
- "B%C", armb, armfbranch, "%b",
- "BL%C", armb, armfbranch, "%b",
-
- "CDP%C", armco, 0, "",
- "CDP%C", armco, 0, "",
- "MCR%C", armco, 0, "",
- "MRC%C", armco, 0, "",
-
- "UNK", armunk, 0, "",
-};
-
-static void
-gaddr(Instr *i)
-{
- *i->curr++ = '$';
- i->curr += gsymoff(i->curr, i->end-i->curr, i->imm, CANY);
-}
-
-static char *mode[] = { 0, "IA", "DB", "IB" };
-static char *pw[] = { "P", "PW", 0, "W" };
-static char *sw[] = { 0, "W", "S", "SW" };
-
-static void
-format(char *mnemonic, Instr *i, char *f)
-{
- int j, k, m, n;
- int g;
- char *fmt;
-
- if(mnemonic)
- format(0, i, mnemonic);
- if(f == 0)
- return;
- if(mnemonic)
- if(i->curr < i->end)
- *i->curr++ = '\t';
- for ( ; *f && i->curr < i->end; f++) {
- if(*f != '%') {
- *i->curr++ = *f;
- continue;
- }
- switch (*++f) {
-
- case 'C': /* .CONDITION */
- if(cond[i->cond])
- bprint(i, ".%s", cond[i->cond]);
- break;
-
- case 'S': /* .STORE */
- if(i->store)
- bprint(i, ".S");
- break;
-
- case 'P': /* P & U bits for block move */
- n = (i->w >>23) & 0x3;
- if (mode[n])
- bprint(i, ".%s", mode[n]);
- break;
-
- case 'p': /* P & W bits for single data xfer*/
- if (pw[i->store])
- bprint(i, ".%s", pw[i->store]);
- break;
-
- case 'a': /* S & W bits for single data xfer*/
- if (sw[i->store])
- bprint(i, ".%s", sw[i->store]);
- break;
-
- case 's':
- bprint(i, "%d", i->rs & 0xf);
- break;
-
- case 'M':
- bprint(i, "%d", (i->w>>8) & 0xf);
- break;
-
- case 'm':
- bprint(i, "%d", (i->w>>7) & 0x1f);
- break;
-
- case 'h':
- bprint(i, shtype[(i->w>>5) & 0x3]);
- break;
-
- case 'u': /* Signed/unsigned Byte/Halfword */
- bprint(i, hb[(i->w>>5) & 0x3]);
- break;
-
- case 'I':
- if (i->rn == 13) {
- if (plocal(i))
- break;
- }
- g = 0;
- fmt = "#%lx(R%d)";
- if (i->rn == 15) {
- /* convert load of offset(PC) to a load immediate */
- uint32 x;
- if (get4(i->map, i->addr+i->imm+8, &x) > 0)
- {
- i->imm = (int32)x;
- g = 1;
- fmt = "";
- }
- }
- if (mach->sb)
- {
- if (i->rd == 11) {
- uint32 nxti;
-
- if (get4(i->map, i->addr+4, &nxti) > 0) {
- if ((nxti & 0x0e0f0fff) == 0x060c000b) {
- i->imm += mach->sb;
- g = 1;
- fmt = "-SB";
- }
- }
- }
- if (i->rn == 12)
- {
- i->imm += mach->sb;
- g = 1;
- fmt = "-SB(SB)";
- }
- }
- if (g)
- {
- gaddr(i);
- bprint(i, fmt, i->rn);
- }
- else
- bprint(i, fmt, i->imm, i->rn);
- break;
- case 'U': /* Add/subtract from base */
- bprint(i, addsub[(i->w >> 23) & 1]);
- break;
-
- case 'n':
- bprint(i, "%d", i->rn);
- break;
-
- case 'd':
- bprint(i, "%d", i->rd);
- break;
-
- case 'i':
- bprint(i, "%lux", i->imm);
- break;
-
- case 'b':
- i->curr += symoff(i->curr, i->end-i->curr,
- i->imm, CTEXT);
- break;
-
- case 'g':
- i->curr += gsymoff(i->curr, i->end-i->curr,
- i->imm, CANY);
- break;
-
- case 'r':
- n = i->imm&0xffff;
- j = 0;
- k = 0;
- while(n) {
- m = j;
- while(n&0x1) {
- j++;
- n >>= 1;
- }
- if(j != m) {
- if(k)
- bprint(i, ",");
- if(j == m+1)
- bprint(i, "R%d", m);
- else
- bprint(i, "R%d-R%d", m, j-1);
- k = 1;
- }
- j++;
- n >>= 1;
- }
- break;
-
- case '\0':
- *i->curr++ = '%';
- return;
-
- default:
- bprint(i, "%%%c", *f);
- break;
- }
- }
- *i->curr = 0;
-}
-
-static int
-printins(Map *map, ulong pc, char *buf, int n)
-{
- Instr i;
-
- i.curr = buf;
- i.end = buf+n-1;
- if(decode(map, pc, &i) < 0)
- return -1;
-
- (*opcodes[i.op].fmt)(&opcodes[i.op], &i);
- return 4;
-}
-
-static int
-arminst(Map *map, uvlong pc, char modifier, char *buf, int n)
-{
- USED(modifier);
- return printins(map, pc, buf, n);
-}
-
-static int
-armdas(Map *map, uvlong pc, char *buf, int n)
-{
- Instr i;
-
- i.curr = buf;
- i.end = buf+n;
- if(decode(map, pc, &i) < 0)
- return -1;
- if(i.end-i.curr > 8)
- i.curr = _hexify(buf, i.w, 7);
- *i.curr = 0;
- return 4;
-}
-
-static int
-arminstlen(Map *map, uvlong pc)
-{
- Instr i;
-
- if(decode(map, pc, &i) < 0)
- return -1;
- return 4;
-}
-
-static int
-armfoll(Map *map, uvlong pc, Rgetter rget, uvlong *foll)
-{
- ulong d;
- Instr i;
-
- if(decode(map, pc, &i) < 0)
- return -1;
-
- if(opcodes[i.op].foll) {
- d = (*opcodes[i.op].foll)(map, rget, &i, pc);
- if(d == -1)
- return -1;
- } else
- d = pc+4;
-
- foll[0] = d;
- return 1;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-15 12:21:11 +0000