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-rw-r--r--src/libmach/obj.c393
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diff --git a/src/libmach/obj.c b/src/libmach/obj.c
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--- a/src/libmach/obj.c
+++ /dev/null
@@ -1,393 +0,0 @@
-// Inferno libmach/obj.c
-// http://code.google.com/p/inferno-os/source/browse/utils/libmach/obj.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.
-
-/*
- * obj.c
- * routines universal to all object files
- */
-#include <u.h>
-#include <libc.h>
-#include <bio.h>
-#include <ar.h>
-#include <mach.h>
-#include "obj.h"
-
-#define islocal(t) ((t)=='a' || (t)=='p')
-
-enum
-{
- NNAMES = 50,
- MAXIS = 8, /* max length to determine if a file is a .? file */
- MAXOFF = 0x7fffffff, /* larger than any possible local offset */
- NHASH = 1024, /* must be power of two */
- HASHMUL = 79L,
-};
-
-int _is2(char*), /* in [$OS].c */
- _is5(char*),
- _is6(char*),
- _is7(char*),
- _is8(char*),
- _is9(char*),
- _isk(char*),
- _isq(char*),
- _isv(char*),
- _isu(char*),
- _read2(Biobuf*, Prog*),
- _read5(Biobuf*, Prog*),
- _read6(Biobuf*, Prog*),
- _read7(Biobuf*, Prog*),
- _read8(Biobuf*, Prog*),
- _read9(Biobuf*, Prog*),
- _readk(Biobuf*, Prog*),
- _readq(Biobuf*, Prog*),
- _readv(Biobuf*, Prog*),
- _readu(Biobuf*, Prog*);
-
-typedef struct Obj Obj;
-typedef struct Symtab Symtab;
-
-struct Obj /* functions to handle each intermediate (.$O) file */
-{
- char *name; /* name of each $O file */
- int (*is)(char*); /* test for each type of $O file */
- int (*read)(Biobuf*, Prog*); /* read for each type of $O file*/
-};
-
-static Obj obj[] =
-{ /* functions to identify and parse each type of obj */
- [Obj68020] = { "68020 .2", _is2, _read2 },
- [ObjAmd64] = { "amd64 .6", _is6 , _read6 },
- [ObjArm] = { "arm .5", _is5, _read5 },
- [ObjAlpha] = { "alpha .7", _is7, _read7 },
- [Obj386] = { "386 .8", _is8, _read8 },
- [ObjSparc] = { "sparc .k", _isk, _readk },
- [ObjPower] = { "power .q", _isq, _readq },
- [ObjMips] = { "mips .v", _isv, _readv },
- [ObjSparc64] = { "sparc64 .u", _isu, _readu },
- [ObjPower64] = { "power64 .9", _is9, _read9 },
- [Maxobjtype] = { 0, 0, 0 }
-};
-
-struct Symtab
-{
- struct Sym s;
- struct Symtab *next;
-};
-
-static Symtab *hash[NHASH];
-static Sym *names[NNAMES]; /* working set of active names */
-
-static int processprog(Prog*,int); /* decode each symbol reference */
-static void objreset(void);
-static void objlookup(int, char *, int, uint);
-static void objupdate(int, int);
-
-static int sequence;
-
-int
-objtype(Biobuf *bp, char **name)
-{
- int i;
- char buf[MAXIS];
- int c;
- char *p;
-
- /*
- * Look for import block.
- */
- p = Brdline(bp, '\n');
- if(p == nil)
- return -1;
- if(Blinelen(bp) < 10 || strncmp(p, "go object ", 10) != 0)
- return -1;
- Bseek(bp, -1, 1);
-
- /*
- * Found one. Skip until "\n!\n"
- */
- for(;;) {
- if((c = BGETC(bp)) == Beof)
- return -1;
- if(c != '\n')
- continue;
- c = BGETC(bp);
- if(c != '!'){
- Bungetc(bp);
- continue;
- }
- c = BGETC(bp);
- if(c != '\n'){
- Bungetc(bp);
- continue;
- }
- break;
- }
-
- if(Bread(bp, buf, MAXIS) < MAXIS)
- return -1;
- Bseek(bp, -MAXIS, 1);
- for (i = 0; i < Maxobjtype; i++) {
- if (obj[i].is && (*obj[i].is)(buf)) {
- if (name)
- *name = obj[i].name;
- return i;
- }
- }
-
- return -1;
-}
-
-int
-isar(Biobuf *bp)
-{
- int n;
- char magbuf[SARMAG];
-
- n = Bread(bp, magbuf, SARMAG);
- if(n == SARMAG && strncmp(magbuf, ARMAG, SARMAG) == 0)
- return 1;
- return 0;
-}
-
-/*
- * determine what kind of object file this is and process it.
- * return whether or not this was a recognized intermediate file.
- */
-int
-readobj(Biobuf *bp, int objtype)
-{
- Prog p;
-
- if (objtype < 0 || objtype >= Maxobjtype || obj[objtype].is == 0)
- return 1;
- objreset();
- while ((*obj[objtype].read)(bp, &p))
- if (!processprog(&p, 1))
- return 0;
- return 1;
-}
-
-int
-readar(Biobuf *bp, int objtype, vlong end, int doautos)
-{
- Prog p;
-
- if (objtype < 0 || objtype >= Maxobjtype || obj[objtype].is == 0)
- return 1;
- objreset();
- while ((*obj[objtype].read)(bp, &p) && Boffset(bp) < end)
- if (!processprog(&p, doautos))
- return 0;
- return 1;
-}
-
-/*
- * decode a symbol reference or definition
- */
-static int
-processprog(Prog *p, int doautos)
-{
- if(p->kind == aNone)
- return 1;
- if((schar)p->sym < 0 || p->sym >= NNAMES)
- return 0;
- switch(p->kind)
- {
- case aName:
- if (!doautos)
- if(p->type != 'U' && p->type != 'b')
- break;
- objlookup(p->sym, p->id, p->type, p->sig);
- break;
- case aText:
- objupdate(p->sym, 'T');
- break;
- case aData:
- objupdate(p->sym, 'D');
- break;
- default:
- break;
- }
- return 1;
-}
-
-/*
- * find the entry for s in the symbol array.
- * make a new entry if it is not already there.
- */
-static void
-objlookup(int id, char *name, int type, uint sig)
-{
- uint32 h;
- char *cp;
- Sym *s;
- Symtab *sp;
-
- s = names[id];
- if(s && strcmp(s->name, name) == 0) {
- s->type = type;
- s->sig = sig;
- return;
- }
-
- h = *name;
- for(cp = name+1; *cp; h += *cp++)
- h *= HASHMUL;
- h &= NHASH-1;
- if (type == 'U' || type == 'b' || islocal(type)) {
- for(sp = hash[h]; sp; sp = sp->next)
- if(strcmp(sp->s.name, name) == 0) {
- switch(sp->s.type) {
- case 'T':
- case 'D':
- case 'U':
- if (type == 'U') {
- names[id] = &sp->s;
- return;
- }
- break;
- case 't':
- case 'd':
- case 'b':
- if (type == 'b') {
- names[id] = &sp->s;
- return;
- }
- break;
- case 'a':
- case 'p':
- if (islocal(type)) {
- names[id] = &sp->s;
- return;
- }
- break;
- default:
- break;
- }
- }
- }
- sp = malloc(sizeof(Symtab));
- if(sp == nil)
- sysfatal("out of memory");
- sp->s.name = name;
- sp->s.type = type;
- sp->s.sig = sig;
- sp->s.value = islocal(type) ? MAXOFF : 0;
- sp->s.sequence = sequence++;
- names[id] = &sp->s;
- sp->next = hash[h];
- hash[h] = sp;
- return;
-}
-/*
- * traverse the symbol lists
- */
-void
-objtraverse(void (*fn)(Sym*, void*), void *pointer)
-{
- int i;
- Symtab *s;
-
- for(i = 0; i < NHASH; i++)
- for(s = hash[i]; s; s = s->next)
- (*fn)(&s->s, pointer);
-}
-
-/*
- * update the offset information for a 'a' or 'p' symbol in an intermediate file
- */
-void
-_offset(int id, vlong off)
-{
- Sym *s;
-
- s = names[id];
- if (s && s->name[0] && islocal(s->type) && s->value > off)
- s->value = off;
-}
-
-/*
- * update the type of a global text or data symbol
- */
-static void
-objupdate(int id, int type)
-{
- Sym *s;
-
- s = names[id];
- if (s && s->name[0])
- if (s->type == 'U')
- s->type = type;
- else if (s->type == 'b')
- s->type = tolower(type);
-}
-
-/*
- * look for the next file in an archive
- */
-int
-nextar(Biobuf *bp, int offset, char *buf)
-{
- struct ar_hdr a;
- int i, r;
- int32 arsize;
-
- if (offset&01)
- offset++;
- Bseek(bp, offset, 0);
- r = Bread(bp, &a, SAR_HDR);
- if(r != SAR_HDR)
- return 0;
- if(strncmp(a.fmag, ARFMAG, sizeof(a.fmag)))
- return -1;
- for(i=0; i<sizeof(a.name) && i<SARNAME && a.name[i] != ' '; i++)
- buf[i] = a.name[i];
- buf[i] = 0;
- arsize = strtol(a.size, 0, 0);
- if (arsize&1)
- arsize++;
- return arsize + SAR_HDR;
-}
-
-static void
-objreset(void)
-{
- int i;
- Symtab *s, *n;
-
- for(i = 0; i < NHASH; i++) {
- for(s = hash[i]; s; s = n) {
- n = s->next;
- free(s->s.name);
- free(s);
- }
- hash[i] = 0;
- }
- memset(names, 0, sizeof names);
-}
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