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Diffstat (limited to 'src/cmd/ld/lib.h')
| -rw-r--r-- | src/cmd/ld/lib.h | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/src/cmd/ld/lib.h b/src/cmd/ld/lib.h new file mode 100644 index 000000000..d13eea31e --- /dev/null +++ b/src/cmd/ld/lib.h @@ -0,0 +1,308 @@ +// Derived from Inferno utils/6l/l.h +// http://code.google.com/p/inferno-os/source/browse/utils/6l/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. + +enum +{ + Sxxx, + + /* order here is order in output file */ + STEXT, + SMACHOPLT, + STYPE, + SSTRING, + SGOSTRING, + SRODATA, + SSYMTAB, + SPCLNTAB, + SELFROSECT, + SELFSECT, + SDATA, + SMACHO, /* Mach-O __nl_symbol_ptr */ + SMACHOGOT, + SWINDOWS, + SBSS, + + SXREF, + SMACHODYNSTR, + SMACHODYNSYM, + SMACHOINDIRECTPLT, + SMACHOINDIRECTGOT, + SFILE, + SCONST, + SDYNIMPORT, + + SSUB = 1<<8, /* sub-symbol, linked from parent via ->sub list */ + + NHASH = 100003, +}; + +typedef struct Library Library; +struct Library +{ + char *objref; // object where we found the reference + char *srcref; // src file where we found the reference + char *file; // object file + char *pkg; // import path +}; + +// Terrible but standard terminology. +// A segment describes a block of file to load into memory. +// A section further describes the pieces of that block for +// use in debuggers and such. + +typedef struct Segment Segment; +typedef struct Section Section; + +struct Segment +{ + uchar rwx; // permission as usual unix bits (5 = r-x etc) + uvlong vaddr; // virtual address + uvlong len; // length in memory + uvlong fileoff; // file offset + uvlong filelen; // length on disk + Section* sect; +}; + +struct Section +{ + uchar rwx; + char *name; + uvlong vaddr; + uvlong len; + Section *next; // in segment list + Segment *seg; +}; + +extern char symname[]; +extern char *libdir[]; +extern int nlibdir; + +EXTERN char* INITENTRY; +EXTERN char* thestring; +EXTERN Library* library; +EXTERN int libraryp; +EXTERN int nlibrary; +EXTERN Sym* hash[NHASH]; +EXTERN Sym* allsym; +EXTERN Sym* histfrog[MAXHIST]; +EXTERN uchar fnuxi8[8]; +EXTERN uchar fnuxi4[4]; +EXTERN int histfrogp; +EXTERN int histgen; +EXTERN uchar inuxi1[1]; +EXTERN uchar inuxi2[2]; +EXTERN uchar inuxi4[4]; +EXTERN uchar inuxi8[8]; +EXTERN char* outfile; +EXTERN int32 nsymbol; +EXTERN char* thestring; +EXTERN int ndynexp; +EXTERN int havedynamic; + +EXTERN Segment segtext; +EXTERN Segment segdata; +EXTERN Segment segsym; + +void addlib(char *src, char *obj); +void addlibpath(char *srcref, char *objref, char *file, char *pkg); +Section* addsection(Segment*, char*, int); +void copyhistfrog(char *buf, int nbuf); +void addhist(int32 line, int type); +void asmlc(void); +void histtoauto(void); +void collapsefrog(Sym *s); +Sym* lookup(char *symb, int v); +Sym* rlookup(char *symb, int v); +void nuxiinit(void); +int find1(int32 l, int c); +int find2(int32 l, int c); +int32 ieeedtof(Ieee *e); +double ieeedtod(Ieee *e); +void undefsym(Sym *s); +void zerosig(char *sp); +void readundefs(char *f, int t); +int32 Bget4(Biobuf *f); +void loadlib(void); +void errorexit(void); +void mangle(char*); +void objfile(char *file, char *pkg); +void libinit(void); +void pclntab(void); +void symtab(void); +void Lflag(char *arg); +void usage(void); +void adddynrel(Sym*, Reloc*); +void ldobj1(Biobuf *f, char*, int64 len, char *pn); +void ldobj(Biobuf*, char*, int64, char*, int); +void ldelf(Biobuf*, char*, int64, char*); +void ldmacho(Biobuf*, char*, int64, char*); +void ldpe(Biobuf*, char*, int64, char*); +void ldpkg(Biobuf*, char*, int64, char*, int); +void mark(Sym *s); +void mkfwd(void); +char* expandpkg(char*, char*); +void deadcode(void); +Reloc* addrel(Sym*); +void codeblk(int32, int32); +void datblk(int32, int32); +Sym* datsort(Sym*); +void reloc(void); +void relocsym(Sym*); +void savedata(Sym*, Prog*, char*); +void symgrow(Sym*, int32); +vlong addstring(Sym*, char*); +vlong adduint32(Sym*, uint32); +vlong adduint64(Sym*, uint64); +vlong addaddr(Sym*, Sym*); +vlong addaddrplus(Sym*, Sym*, int32); +vlong addpcrelplus(Sym*, Sym*, int32); +vlong addsize(Sym*, Sym*); +vlong adduint8(Sym*, uint8); +vlong adduint16(Sym*, uint16); +void asmsym(void); +void asmelfsym(void); +void asmplan9sym(void); +void strnput(char*, int); +void dodata(void); +void address(void); +void textaddress(void); +void genasmsym(void (*put)(Sym*, char*, int, vlong, vlong, int, Sym*)); +vlong datoff(vlong); +void adddynlib(char*); +int archreloc(Reloc*, Sym*, vlong*); +void adddynsym(Sym*); +void addexport(void); +void dostkcheck(void); +void undef(void); +void doweak(void); +void setpersrc(Sym*); + +int pathchar(void); +void* mal(uint32); +void unmal(void*, uint32); +void mywhatsys(void); +int rbyoff(const void*, const void*); + +uint16 le16(uchar*); +uint32 le32(uchar*); +uint64 le64(uchar*); +uint16 be16(uchar*); +uint32 be32(uchar*); +uint64 be64(uchar*); + +typedef struct Endian Endian; +struct Endian +{ + uint16 (*e16)(uchar*); + uint32 (*e32)(uchar*); + uint64 (*e64)(uchar*); +}; + +extern Endian be, le; + +// relocation size bits +enum { + Rbig = 128, + Rlittle = 64, +}; + +/* set by call to mywhatsys() */ +extern char* goroot; +extern char* goarch; +extern char* goos; + +/* whence for ldpkg */ +enum { + FileObj = 0, + ArchiveObj, + Pkgdef +}; + +/* executable header types */ +enum { + Hgarbunix = 0, // garbage unix + Hnoheader, // no header + Hunixcoff, // unix coff + Hrisc, // aif for risc os + Hplan9x32, // plan 9 32-bit format + Hplan9x64, // plan 9 64-bit format + Hmsdoscom, // MS-DOS .COM + Hnetbsd, // NetBSD + Hmsdosexe, // fake MS-DOS .EXE + Hixp1200, // IXP1200 (raw) + Helf, // ELF32 + Hipaq, // ipaq + Hdarwin, // Apple Mach-O + Hlinux, // Linux ELF + Hfreebsd, // FreeBSD ELF + Hwindows, // MS Windows PE + Hopenbsd, // OpenBSD ELF +}; + +typedef struct Header Header; +struct Header { + char *name; + int val; +}; + +EXTERN char* headstring; +extern Header headers[]; + +int headtype(char*); + +int Yconv(Fmt*); + +#pragma varargck type "O" int +#pragma varargck type "Y" Sym* + +// buffered output + +EXTERN Biobuf bso; + +EXTERN struct +{ + char cbuf[MAXIO]; /* output buffer */ +} buf; + +EXTERN int cbc; +EXTERN char* cbp; +EXTERN char* cbpmax; + +#define cput(c)\ + { *cbp++ = c;\ + if(--cbc <= 0)\ + cflush(); } + +void cflush(void); +vlong cpos(void); +void cseek(vlong); +void cwrite(void*, int); +void importcycles(void); +int Zconv(Fmt*); |