| // Inferno utils/6l/obj.c |
| // http://code.google.com/p/inferno-os/source/browse/utils/6l/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. |
| |
| #include "l.h" |
| #include "../ld/lib.h" |
| #include "../ld/elf.h" |
| #include "../ld/macho.h" |
| #include "../ld/dwarf.h" |
| #include "../ld/pe.h" |
| #include <ar.h> |
| |
| char* thestring = "amd64"; |
| LinkArch* thelinkarch = &linkamd64; |
| |
| void |
| linkarchinit(void) |
| { |
| if(strcmp(getgoarch(), "amd64p32") == 0) |
| thelinkarch = &linkamd64p32; |
| PtrSize = thelinkarch->ptrsize; |
| IntSize = PtrSize; |
| RegSize = thelinkarch->regsize; |
| } |
| |
| void |
| archinit(void) |
| { |
| // getgoextlinkenabled is based on GO_EXTLINK_ENABLED when |
| // Go was built; see ../../make.bash. |
| if(linkmode == LinkAuto && strcmp(getgoextlinkenabled(), "0") == 0) |
| linkmode = LinkInternal; |
| |
| if(flag_shared) |
| linkmode = LinkExternal; |
| |
| switch(HEADTYPE) { |
| default: |
| if(linkmode == LinkAuto) |
| linkmode = LinkInternal; |
| if(linkmode == LinkExternal && strcmp(getgoextlinkenabled(), "1") != 0) |
| sysfatal("cannot use -linkmode=external with -H %s", headstr(HEADTYPE)); |
| break; |
| case Hdarwin: |
| case Hdragonfly: |
| case Hfreebsd: |
| case Hlinux: |
| case Hnacl: |
| case Hnetbsd: |
| case Hopenbsd: |
| case Hsolaris: |
| break; |
| } |
| |
| switch(HEADTYPE) { |
| default: |
| diag("unknown -H option"); |
| errorexit(); |
| case Hplan9: /* plan 9 */ |
| HEADR = 32L + 8L; |
| if(INITTEXT == -1) |
| INITTEXT = 0x200000+HEADR; |
| if(INITDAT == -1) |
| INITDAT = 0; |
| if(INITRND == -1) |
| INITRND = 0x200000; |
| break; |
| case Helf: /* elf32 executable */ |
| HEADR = rnd(52L+3*32L, 16); |
| if(INITTEXT == -1) |
| INITTEXT = 0x80110000L; |
| if(INITDAT == -1) |
| INITDAT = 0; |
| if(INITRND == -1) |
| INITRND = 4096; |
| break; |
| case Hdarwin: /* apple MACH */ |
| machoinit(); |
| HEADR = INITIAL_MACHO_HEADR; |
| if(INITRND == -1) |
| INITRND = 4096; |
| if(INITTEXT == -1) |
| INITTEXT = 4096+HEADR; |
| if(INITDAT == -1) |
| INITDAT = 0; |
| break; |
| case Hlinux: /* elf64 executable */ |
| case Hfreebsd: /* freebsd */ |
| case Hnetbsd: /* netbsd */ |
| case Hopenbsd: /* openbsd */ |
| case Hdragonfly: /* dragonfly */ |
| case Hsolaris: /* solaris */ |
| elfinit(); |
| HEADR = ELFRESERVE; |
| if(INITTEXT == -1) |
| INITTEXT = (1<<22)+HEADR; |
| if(INITDAT == -1) |
| INITDAT = 0; |
| if(INITRND == -1) |
| INITRND = 4096; |
| break; |
| case Hnacl: |
| elfinit(); |
| debug['w']++; // disable dwarf, which gets confused and is useless anyway |
| HEADR = 0x10000; |
| funcalign = 32; |
| if(INITTEXT == -1) |
| INITTEXT = 0x20000; |
| if(INITDAT == -1) |
| INITDAT = 0; |
| if(INITRND == -1) |
| INITRND = 0x10000; |
| break; |
| case Hwindows: /* PE executable */ |
| peinit(); |
| HEADR = PEFILEHEADR; |
| if(INITTEXT == -1) |
| INITTEXT = PEBASE+PESECTHEADR; |
| if(INITDAT == -1) |
| INITDAT = 0; |
| if(INITRND == -1) |
| INITRND = PESECTALIGN; |
| break; |
| } |
| |
| if(INITDAT != 0 && INITRND != 0) |
| print("warning: -D0x%llux is ignored because of -R0x%ux\n", |
| INITDAT, INITRND); |
| } |