OFILES=\
asm.$O\
- compat.$O\
enam.$O\
+ lib.$O\
list.$O\
noop.$O\
obj.$O\
l.h\
../5l/5.out.h\
-
$(TARG): $(OFILES)
$(LD) -o $(TARG) -L$(GOROOT)/lib $(OFILES) -lbio -l9
install: $(TARG)
cp $(TARG) $(GOBIN)/$(TARG)
+
+%.$O: ../ld/%.c
+ $(CC) $(CFLAGS) -c -I. ../ld/$*.c
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
int32 OFFSET;
+++ /dev/null
-// 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 "l.h"
-#include "compat.h"
-enum
-{
- PtrSize = 4
-};
-#define pcond cond
-#include "../ld/go.c"
#include <bio.h>
#include "../5l/5.out.h"
+enum
+{
+ PtrSize = 4
+};
+
#ifndef EXTERN
#define EXTERN extern
#endif
short frame;
uchar subtype;
uchar reachable;
- ushort file;
int32 value;
int32 sig;
uchar used;
Prog* text;
Prog* data;
Sym* gotype;
+ char* file;
char* dynldname;
char* dynldlib;
};
EXTERN Prog* edatap;
EXTERN Prog* etextp;
EXTERN Prog* firstp;
-EXTERN uchar fnuxi4[4];
-EXTERN uchar fnuxi8[8];
EXTERN char* noname;
-EXTERN Sym* hash[NHASH];
-EXTERN Sym* histfrog[MAXHIST];
-EXTERN int histfrogp;
-EXTERN int histgen;
-EXTERN char* library[50];
-EXTERN char* libraryobj[50];
-EXTERN int libraryp;
EXTERN int xrefresolv;
-EXTERN uchar inuxi1[1];
-EXTERN uchar inuxi2[2];
-EXTERN uchar inuxi4[4];
EXTERN Prog* lastp;
EXTERN int32 lcsize;
EXTERN char literal[32];
EXTERN int32 symsize;
EXTERN Prog* textp;
EXTERN int32 textsize;
-EXTERN int32 thunk;
EXTERN int version;
EXTERN char xcmp[C_GOK+1][C_GOK+1];
EXTERN Prog zprg;
void doprof2(void);
void dynreloc(Sym*, int32, int);
int32 entryvalue(void);
-void errorexit(void);
void exchange(Prog*);
void export(void);
-int find1(int32, int);
void follow(void);
-void histtoauto(void);
void hputl(int);
-double ieeedtod(Ieee*);
-int32 ieeedtof(Ieee*);
void import(void);
int isnop(Prog*);
-void ldobj(Biobuf*, int32, char*);
-void loadlib(void);
void listinit(void);
Sym* lookup(char*, int);
void cput(int);
void names(void);
Prog* newdata(Sym *s, int o, int w, int t);
void nocache(Prog*);
-void nuxiinit(void);
-void objfile(char*);
int ocmp(const void*, const void*);
int32 opirr(int);
Optab* oplook(Prog*);
Prog* prg(void);
int pseudo(Prog*);
void putsymb(char*, int, int32, int);
-void readundefs(char*, int);
int32 regoff(Adr*);
int relinv(int);
int32 rnd(int32, int32);
void span(void);
void strnput(char*, int);
void undef(void);
-void undefsym(Sym*);
void wput(int32);
void wputl(ushort w);
void xdefine(char*, int, int32);
void xfol(Prog*);
-void zerosig(char*);
void noops(void);
int32 immrot(uint32);
int32 immaddr(int32);
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
void
listinit(void)
#define EXTERN
#include "l.h"
-#include "compat.h"
+#include "../ld/lib.h"
#include <ar.h>
#ifndef DEFAULT
#endif
char *noname = "<none>";
-char symname[] = SYMDEF;
char thechar = '5';
char *thestring = "arm";
-char* libdir[16]; // contains "." first, goroot last
-int nlibdir = 0;
/*
* -H1 -T0x10005000 -R4 is aif for risc os
return v;
}
+void
+usage(void)
+{
+ fprint(2, "usage: 5l [-options] objects\n");
+ errorexit();
+}
+
void
main(int argc, char *argv[])
{
int c;
- char *a;
Binit(&bso, 1, OWRITE);
cout = -1;
listinit();
- outfile = 0;
nerrors = 0;
curtext = P;
+ outfile = "5.out";
HEADTYPE = -1;
INITTEXT = -1;
INITDAT = -1;
INITRND = -1;
INITENTRY = 0;
- libdir[nlibdir++] = "."; // look in dot first
ARGBEGIN {
default:
debug[c]++;
break;
case 'o':
- outfile = ARGF();
+ outfile = EARGF(usage());
break;
case 'E':
- a = ARGF();
- if(a)
- INITENTRY = a;
+ INITENTRY = EARGF(usage());
break;
case 'L':
- if(nlibdir >= nelem(libdir)-1) {
- print("too many -L's: %d\n", nlibdir);
- }
- libdir[nlibdir++] = ARGF();
+ Lflag(EARGF(usage()));
break;
case 'T':
- a = ARGF();
- if(a)
- INITTEXT = atolwhex(a);
+ INITTEXT = atolwhex(EARGF(usage()));
break;
case 'D':
- a = ARGF();
- if(a)
- INITDAT = atolwhex(a);
+ INITDAT = atolwhex(EARGF(usage()));
break;
case 'R':
- a = ARGF();
- if(a)
- INITRND = atolwhex(a);
+ INITRND = atolwhex(EARGF(usage()));
break;
case 'H':
- a = ARGF();
- if(a)
- HEADTYPE = atolwhex(a);
+ HEADTYPE = atolwhex(EARGF(usage()));
/* do something about setting INITTEXT */
break;
case 'x': /* produce export table */
USED(argc);
- if(*argv == 0) {
- diag("usage: 5l [-options] objects");
- errorexit();
- }
- mywhatsys(); // get goroot, goarch, goos
- if(strcmp(goarch, thestring) != 0)
- print("goarch is not known: %s\n", goarch);
+ if(*argv == 0)
+ usage();
- // put goroot in the libdir list.
- libdir[nlibdir++] = smprint("%s/pkg/%s_%s", goroot, goos, goarch);
+ libinit();
if(!debug['9'] && !debug['U'] && !debug['B'])
debug[DEFAULT] = 1;
edatap = P;
pc = 0;
dtype = 4;
- if(outfile == 0)
- outfile = "5.out";
- unlink(outfile);
- cout = create(outfile, 1, 0775);
- if(cout < 0) {
- diag("%s: cannot create", outfile);
- errorexit();
- }
nuxiinit();
version = 0;
firstp = prg();
lastp = firstp;
- if(INITENTRY == nil) {
- INITENTRY = mal(strlen(goarch)+strlen(goos)+10);
- sprint(INITENTRY, "_rt0_%s_%s", goarch, goos);
- }
- lookup(INITENTRY, 0)->type = SXREF;
-
while(*argv)
objfile(*argv++);
- if(!debug['l']) {
+ if(!debug['l'])
loadlib();
- a = mal(strlen(goroot)+strlen(goarch)+strlen(goos)+20);
- sprint(a, "%s/pkg/%s_%s/runtime.a", goroot, goos, goarch);
- objfile(a);
- }
+
deadcode();
firstp = firstp->link;
}
if(debug['v']) {
Bprint(&bso, "%5.2f cpu time\n", cputime());
- Bprint(&bso, "%ld memory used\n", thunk);
Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
}
errorexit();
}
-void
-loadlib(void)
-{
- int i;
- int32 h;
- Sym *s;
-
-loop:
- xrefresolv = 0;
- for(i=0; i<libraryp; i++) {
- if(debug['v'])
- Bprint(&bso, "%5.2f autolib: %s (from %s)\n", cputime(), library[i], libraryobj[i]);
- objfile(library[i]);
- }
- if(xrefresolv)
- for(h=0; h<nelem(hash); h++)
- for(s = hash[h]; s != S; s = s->link)
- if(s->type == SXREF)
- goto loop;
-}
-
-void
-errorexit(void)
-{
-
- Bflush(&bso);
- if(nerrors) {
- if(cout >= 0)
- remove(outfile);
- exits("error");
- }
- exits(0);
-}
-
-void
-objfile(char *file)
-{
- int32 off, esym, cnt, l;
- int work;
- Biobuf *f;
- Sym *s;
- char magbuf[SARMAG];
- char name[100], pname[150];
- struct ar_hdr arhdr;
- char *e, *start, *stop;
-
- if(file[0] == '-' && file[1] == 'l') {
- if(debug['9'])
- sprint(name, "/%s/lib/lib", thestring);
- else
- sprint(name, "/usr/%clib/lib", thechar);
- strcat(name, file+2);
- strcat(name, ".a");
- file = name;
- }
- if(debug['v'])
- Bprint(&bso, "%5.2f ldobj: %s\n", cputime(), file);
- Bflush(&bso);
- f = Bopen(file, 0);
- if(f == nil) {
- diag("cannot open file: %s", file);
- errorexit();
- }
- l = Bread(f, magbuf, SARMAG);
- if(l != SARMAG || strncmp(magbuf, ARMAG, SARMAG)){
- /* load it as a regular file */
- l = Bseek(f, 0L, 2);
- Bseek(f, 0L, 0);
- ldobj(f, l, file);
- Bterm(f);
- return;
- }
-
- if(debug['v'])
- Bprint(&bso, "%5.2f ldlib: %s\n", cputime(), file);
- l = Bread(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR) {
- diag("%s: short read on archive file symbol header", file);
- goto out;
- }
- if(strncmp(arhdr.name, symname, strlen(symname))) {
- diag("%s: first entry not symbol header", file);
- goto out;
- }
-
- esym = SARMAG + SAR_HDR + atolwhex(arhdr.size);
- off = SARMAG + SAR_HDR;
-
- /*
- * just bang the whole symbol file into memory
- */
- Bseek(f, off, 0);
- cnt = esym - off;
- start = malloc(cnt + 10);
- cnt = Bread(f, start, cnt);
- if(cnt <= 0){
- Bterm(f);
- return;
- }
- stop = &start[cnt];
- memset(stop, 0, 10);
-
- work = 1;
- while(work){
- if(debug['v'])
- Bprint(&bso, "%5.2f library pass: %s\n", cputime(), file);
- Bflush(&bso);
- work = 0;
- for(e = start; e < stop; e = strchr(e+5, 0) + 1) {
- s = lookup(e+5, 0);
- if(s->type != SXREF)
- continue;
- sprint(pname, "%s(%s)", file, s->name);
- if(debug['v'])
- Bprint(&bso, "%5.2f library: %s\n", cputime(), pname);
- Bflush(&bso);
- l = e[1] & 0xff;
- l |= (e[2] & 0xff) << 8;
- l |= (e[3] & 0xff) << 16;
- l |= (e[4] & 0xff) << 24;
- Bseek(f, l, 0);
- l = Bread(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR)
- goto bad;
- if(strncmp(arhdr.fmag, ARFMAG, sizeof(arhdr.fmag)))
- goto bad;
- l = atolwhex(arhdr.size);
- ldobj(f, l, pname);
- if(s->type == SXREF) {
- diag("%s: failed to load: %s", file, s->name);
- errorexit();
- }
- work = 1;
- xrefresolv = 1;
- }
- }
- return;
-
-bad:
- diag("%s: bad or out of date archive", file);
-out:
- Bterm(f);
-}
-
-int32
-Bget4(Biobuf *f)
-{
- uchar p[4];
-
- if(Bread(f, p, 4) != 4)
- return 0;
- return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-
void
zaddr(Biobuf *f, Adr *a, Sym *h[])
{
u->type = i;
}
-void
-addlib(char *obj)
-{
- char name[1024], pname[1024], comp[256], *p;
- int i, search;
-
- if(histfrogp <= 0)
- return;
-
- search = 0;
- if(histfrog[0]->name[1] == '/') {
- sprint(name, "");
- i = 1;
- } else
- if(histfrog[0]->name[1] == '.') {
- sprint(name, ".");
- i = 0;
- } else {
- sprint(name, "");
- i = 0;
- search = 1;
- }
-
- for(; i<histfrogp; i++) {
- snprint(comp, sizeof comp, histfrog[i]->name+1);
- for(;;) {
- p = strstr(comp, "$O");
- if(p == 0)
- break;
- memmove(p+1, p+2, strlen(p+2)+1);
- p[0] = thechar;
- }
- for(;;) {
- p = strstr(comp, "$M");
- if(p == 0)
- break;
- if(strlen(comp)+strlen(thestring)-2+1 >= sizeof comp) {
- diag("library component too long");
- return;
- }
- memmove(p+strlen(thestring), p+2, strlen(p+2)+1);
- memmove(p, thestring, strlen(thestring));
- }
- if(strlen(name) + strlen(comp) + 3 >= sizeof(name)) {
- diag("library component too long");
- return;
- }
- strcat(name, "/");
- strcat(name, comp);
- }
-
- if(search) {
- // try dot, -L "libdir", and then goroot.
- for(i=0; i<nlibdir; i++) {
- snprint(pname, sizeof pname, "%s/%s", libdir[i], name);
- if(access(pname, AEXIST) >= 0)
- break;
- }
- strcpy(name, pname);
- }
- cleanname(name);
- if(debug['v'])
- Bprint(&bso, "%5.2f addlib: %s pulls in %s\n", cputime(), obj, name);
-
- for(i=0; i<libraryp; i++)
- if(strcmp(name, library[i]) == 0)
- return;
- if(libraryp == nelem(library)){
- diag("too many autolibs; skipping %s", name);
- return;
- }
-
- p = malloc(strlen(name) + 1);
- strcpy(p, name);
- library[libraryp] = p;
- p = malloc(strlen(obj) + 1);
- strcpy(p, obj);
- libraryobj[libraryp] = p;
- libraryp++;
-}
-
-void
-addhist(int32 line, int type)
-{
- Auto *u;
- Sym *s;
- int i, j, k;
-
- u = malloc(sizeof(Auto));
- s = malloc(sizeof(Sym));
- s->name = malloc(2*(histfrogp+1) + 1);
-
- u->asym = s;
- u->type = type;
- u->aoffset = line;
- u->link = curhist;
- curhist = u;
-
- j = 1;
- for(i=0; i<histfrogp; i++) {
- k = histfrog[i]->value;
- s->name[j+0] = k>>8;
- s->name[j+1] = k;
- j += 2;
- }
-}
-
-void
-histtoauto(void)
-{
- Auto *l;
-
- while(l = curhist) {
- curhist = l->link;
- l->link = curauto;
- curauto = l;
- }
-}
-
-void
-collapsefrog(Sym *s)
-{
- int i;
-
- /*
- * bad encoding of path components only allows
- * MAXHIST components. if there is an overflow,
- * first try to collapse xxx/..
- */
- for(i=1; i<histfrogp; i++)
- if(strcmp(histfrog[i]->name+1, "..") == 0) {
- memmove(histfrog+i-1, histfrog+i+1,
- (histfrogp-i-1)*sizeof(histfrog[0]));
- histfrogp--;
- goto out;
- }
-
- /*
- * next try to collapse .
- */
- for(i=0; i<histfrogp; i++)
- if(strcmp(histfrog[i]->name+1, ".") == 0) {
- memmove(histfrog+i, histfrog+i+1,
- (histfrogp-i-1)*sizeof(histfrog[0]));
- goto out;
- }
-
- /*
- * last chance, just truncate from front
- */
- memmove(histfrog+0, histfrog+1,
- (histfrogp-1)*sizeof(histfrog[0]));
-
-out:
- histfrog[histfrogp-1] = s;
-}
-
void
nopout(Prog *p)
{
static void puntfp(Prog *);
void
-ldobj(Biobuf *f, int32 len, char *pn)
+ldobj1(Biobuf *f, int64 len, char *pn)
{
int32 ipc;
Prog *p, *t;
Sym *h[NSYM], *s, *di;
int v, o, r, skip;
uint32 sig;
- static int files;
- static char **filen;
- char **nfilen, *line, *name;
- int n, c1, c2, c3;
+ char *name;
int32 eof;
- int32 start, import0, import1;
+ char src[1024];
eof = Boffset(f) + len;
-
- if((files&15) == 0){
- nfilen = malloc((files+16)*sizeof(char*));
- memmove(nfilen, filen, files*sizeof(char*));
- free(filen);
- filen = nfilen;
- }
- filen[files++] = strdup(pn);
-
di = S;
-
- /* check the header */
- start = Boffset(f);
- line = Brdline(f, '\n');
- if(line == nil) {
- if(Blinelen(f) > 0) {
- diag("%s: malformed object file", pn);
- return;
- }
- goto eof;
- }
- n = Blinelen(f) - 1;
- if(n != strlen(thestring) || strncmp(line, thestring, n) != 0) {
- if(line)
- line[n] = '\0';
- diag("file not %s [%s]\n", thestring, line);
- return;
- }
-
- /* skip over exports and other info -- ends with \n!\n */
- import0 = Boffset(f);
- c1 = '\n'; // the last line ended in \n
- c2 = Bgetc(f);
- c3 = Bgetc(f);
- while(c1 != '\n' || c2 != '!' || c3 != '\n') {
- c1 = c2;
- c2 = c3;
- c3 = Bgetc(f);
- if(c3 == Beof)
- goto eof;
- }
- import1 = Boffset(f);
-
- Bseek(f, import0, 0);
- ldpkg(f, import1 - import0 - 2, pn); // -2 for !\n
- Bseek(f, import1, 0);
+ src[0] = 0;
newloop:
memset(h, 0, sizeof(h));
if(sig != 0){
if(s->sig != 0 && s->sig != sig)
- diag("incompatible type signatures %lux(%s) and %lux(%s) for %s", s->sig, filen[s->file], sig, pn, s->name);
+ diag("incompatible type signatures %lux(%s) and %lux(%s) for %s", s->sig, s->file, sig, pn, s->name);
s->sig = sig;
- s->file = files-1;
+ s->file = pn;
}
if(debug['W'])
switch(o) {
case AHISTORY:
if(p->to.offset == -1) {
- addlib(pn);
+ 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' */
diag("truncated object file: %s", pn);
}
-Sym*
-lookup(char *symb, int v)
-{
- Sym *s;
- char *p;
- int32 h;
- int c, l;
-
- h = v;
- for(p=symb; c = *p; p++)
- h = h+h+h + c;
- l = (p - symb) + 1;
- if(h < 0)
- h = ~h;
- h %= NHASH;
- for(s = hash[h]; s != S; s = s->link)
- if(s->version == v)
- if(memcmp(s->name, symb, l) == 0)
- return s;
-
- s = mal(sizeof(Sym));
- s->name = malloc(l);
- memmove(s->name, symb, l);
-
- s->link = hash[h];
- s->type = 0;
- s->version = v;
- s->value = 0;
- s->sig = 0;
- s->used = s->thumb = s->foreign = s->fnptr = 0;
- s->use = nil;
- hash[h] = s;
- return s;
-}
-
Prog*
prg(void)
{
}
}
-void
-nuxiinit(void)
-{
-
- int i, c;
-
- for(i=0; i<4; i++) {
- c = find1(0x04030201L, i+1);
- if(i < 2)
- inuxi2[i] = c;
- if(i < 1)
- inuxi1[i] = c;
- inuxi4[i] = c;
- fnuxi4[i] = c;
- if(debug['d']){
- fnuxi8[i] = c;
- fnuxi8[i+4] = c+4;
- }
- else{
- fnuxi8[i] = c+4; /* ms word first, then ls, even in little endian mode */
- fnuxi8[i+4] = c;
- }
- }
- if(debug['v']) {
- Bprint(&bso, "inuxi = ");
- for(i=0; i<1; i++)
- Bprint(&bso, "%d", inuxi1[i]);
- Bprint(&bso, " ");
- for(i=0; i<2; i++)
- Bprint(&bso, "%d", inuxi2[i]);
- Bprint(&bso, " ");
- for(i=0; i<4; i++)
- Bprint(&bso, "%d", inuxi4[i]);
- Bprint(&bso, "\nfnuxi = ");
- for(i=0; i<4; i++)
- Bprint(&bso, "%d", fnuxi4[i]);
- Bprint(&bso, " ");
- for(i=0; i<8; i++)
- Bprint(&bso, "%d", fnuxi8[i]);
- Bprint(&bso, "\n");
- }
- Bflush(&bso);
-}
-
-int
-find1(int32 l, int c)
-{
- char *p;
- int i;
-
- p = (char*)&l;
- for(i=0; i<4; i++)
- if(*p++ == c)
- return i;
- return 0;
-}
-
-int32
-ieeedtof(Ieee *ieeep)
-{
- int exp;
- int32 v;
-
- if(ieeep->h == 0)
- return 0;
- exp = (ieeep->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- v = (ieeep->h & 0xfffffL) << 3;
- v |= (ieeep->l >> 29) & 0x7L;
- if((ieeep->l >> 28) & 1) {
- v++;
- if(v & 0x800000L) {
- v = (v & 0x7fffffL) >> 1;
- exp++;
- }
- }
- if(exp <= -126 || exp >= 130)
- diag("double fp to single fp overflow");
- v |= ((exp + 126) & 0xffL) << 23;
- v |= ieeep->h & 0x80000000L;
- return v;
-}
-
-double
-ieeedtod(Ieee *ieeep)
-{
- Ieee e;
- double fr;
- int exp;
-
- if(ieeep->h & (1L<<31)) {
- e.h = ieeep->h & ~(1L<<31);
- e.l = ieeep->l;
- return -ieeedtod(&e);
- }
- if(ieeep->l == 0 && ieeep->h == 0)
- return 0;
- fr = ieeep->l & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieeep->l>>16) & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieeep->h & (1L<<20)-1L) | (1L<<20);
- fr /= 1L<<21;
- exp = (ieeep->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- return ldexp(fr, exp);
-}
-
static void
puntfp(Prog *p)
{
p->line = q->line;
return p;
}
-
-void
-undefsym(Sym *s)
-{
- int n;
-
- n = imports;
- if(s->value != 0)
- diag("value != 0 on SXREF");
- if(n >= 1<<Rindex)
- diag("import index %d out of range", n);
- s->value = n<<Roffset;
- s->type = SUNDEF;
- imports++;
-}
-
-void
-zerosig(char *sp)
-{
- Sym *s;
-
- s = lookup(sp, 0);
- s->sig = 0;
-}
-
-void
-readundefs(char *f, int t)
-{
- int i, n;
- Sym *s;
- Biobuf *b;
- char *l, buf[256], *fields[64];
-
- if(f == nil)
- return;
- b = Bopen(f, OREAD);
- if(b == nil){
- diag("could not open %s: %r", f);
- errorexit();
- }
- while((l = Brdline(b, '\n')) != nil){
- n = Blinelen(b);
- if(n >= sizeof(buf)){
- diag("%s: line too long", f);
- errorexit();
- }
- memmove(buf, l, n);
- buf[n-1] = '\0';
- n = getfields(buf, fields, nelem(fields), 1, " \t\r\n");
- if(n == nelem(fields)){
- diag("%s: bad format", f);
- errorexit();
- }
- for(i = 0; i < n; i++){
- s = lookup(fields[i], 0);
- s->type = SXREF;
- s->subtype = t;
- if(t == SIMPORT)
- nimports++;
- else
- nexports++;
- }
- }
- Bterm(b);
-}
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
void
dodata(void)
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
static struct {
uint32 start;
OFILES=\
asm.$O\
- compat.$O\
elf.$O\
enam.$O\
go.$O\
+ lib.$O\
list.$O\
macho.$O\
obj.$O\
HFILES=\
l.h\
../6l/6.out.h\
+ ../ld/lib.h\
../ld/elf.h\
../ld/macho.h\
- ../6l/compat.h\
-
$(TARG): $(OFILES)
$(LD) -o $(TARG) -L$(GOROOT)/lib $(OFILES) -lbio -l9
install: $(TARG)
cp $(TARG) $(GOBIN)/$(TARG)
-go.o: ../ld/go.c
-elf.o: ../ld/elf.c
-macho.o: ../ld/macho.c
+%.$O: ../ld/%.c
+ $(CC) $(CFLAGS) -c -I. ../ld/$*.c
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
#include "../ld/elf.h"
#include "../ld/macho.h"
+++ /dev/null
-// 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 "l.h"
-#include "../ld/elf.c"
+++ /dev/null
-// 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 "l.h"
-enum
-{
- PtrSize = 8
-};
-#include "../ld/go.c"
#include <libc.h>
#include <bio.h>
#include "../6l/6.out.h"
-#include "compat.h"
#ifndef EXTERN
#define EXTERN extern
#endif
+enum
+{
+ PtrSize = 8
+};
+
#define P ((Prog*)0)
#define S ((Sym*)0)
#define TNAME (curtext?curtext->from.sym->name:noname)
short version;
short become;
short frame;
- ushort file;
uchar subtype;
uchar dupok;
uchar reachable;
Prog* text;
Prog* data;
Sym* gotype;
+ char* file;
char* dynldname;
char* dynldlib;
};
EXTERN int cbc;
EXTERN char* cbp;
EXTERN char* pcstr;
-EXTERN int cout;
EXTERN Auto* curauto;
EXTERN Auto* curhist;
EXTERN Prog* curp;
EXTERN char literal[32];
EXTERN Prog* etextp;
EXTERN Prog* firstp;
-EXTERN uchar fnuxi8[8];
-EXTERN uchar fnuxi4[4];
-EXTERN Sym* hash[NHASH];
-EXTERN Sym* histfrog[MAXHIST];
-EXTERN int histfrogp;
-EXTERN int histgen;
-EXTERN char* library[50];
-EXTERN char* libraryobj[50];
-EXTERN int libraryp;
EXTERN int xrefresolv;
-EXTERN char* hunk;
-EXTERN uchar inuxi1[1];
-EXTERN uchar inuxi2[2];
-EXTERN uchar inuxi4[4];
-EXTERN uchar inuxi8[8];
EXTERN char ycover[Ymax*Ymax];
EXTERN uchar* andptr;
EXTERN uchar* rexptr;
EXTERN Prog* lastp;
EXTERN int32 lcsize;
EXTERN int nerrors;
-EXTERN int32 nhunk;
-EXTERN int32 nsymbol;
EXTERN char* noname;
EXTERN char* outfile;
EXTERN vlong pc;
EXTERN int32 symsize;
EXTERN Prog* textp;
EXTERN vlong textsize;
-EXTERN int32 thunk;
EXTERN int version;
EXTERN Prog zprg;
EXTERN int dtype;
void dostkoff(void);
void dynreloc(Sym*, uint32, int);
vlong entryvalue(void);
-void errorexit(void);
void export(void);
-int find1(int32, int);
-int find2(int32, int);
void follow(void);
-void addstachmark(void);
void gethunk(void);
void gotypestrings(void);
-void histtoauto(void);
-double ieeedtod(Ieee*);
-int32 ieeedtof(Ieee*);
void import(void);
-void ldobj(Biobuf*, int64, char*);
-void ldpkg(Biobuf*, int64, char*);
-void loadlib(void);
void listinit(void);
Sym* lookup(char*, int);
void lputb(int32);
Prog* newdata(Sym*, int, int, int);
Prog* newtext(Prog*, Sym*);
void nopout(Prog*);
-void nuxiinit(void);
-void objfile(char*);
int opsize(Prog*);
void patch(void);
Prog* prg(void);
void parsetextconst(vlong);
-void readundefs(char*, int);
int relinv(int);
int32 reuse(Prog*, Sym*);
vlong rnd(vlong, vlong);
void span(void);
void strnput(char*, int);
void undef(void);
-void undefsym(Sym*);
vlong vaddr(Adr*);
vlong symaddr(Sym*);
void vputl(uint64);
void xdefine(char*, int, vlong);
void xfol(Prog*);
void zaddr(Biobuf*, Adr*, Sym*[]);
-void zerosig(char*);
void machseg(char*, vlong, vlong, vlong, vlong, uint32, uint32, uint32, uint32);
void machsymseg(uint32, uint32);
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
static Prog* bigP;
+++ /dev/null
-// 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 "l.h"
-#include "../ld/macho.c"
#define EXTERN
#include "l.h"
+#include "../ld/lib.h"
#include "../ld/elf.h"
#include "../ld/macho.h"
#include <ar.h>
char *noname = "<none>";
-char symname[] = SYMDEF;
char thechar = '6';
char* thestring = "amd64";
char* paramspace = "FP";
-char* libdir[16]; // contains "." first, goroot last
-int nlibdir = 0;
/*
* -H2 -T4136 -R4096 is plan9 64-bit format
main(int argc, char *argv[])
{
int i, c;
- char *a;
Binit(&bso, 1, OWRITE);
cout = -1;
INITDAT = -1;
INITRND = -1;
INITENTRY = 0;
- libdir[nlibdir++] = "."; // look in dot first
ARGBEGIN {
default:
HEADTYPE = atolwhex(EARGF(usage()));
break;
case 'L':
- if(nlibdir >= nelem(libdir)-1) {
- print("too many -L's: %d\n", nlibdir);
- usage();
- }
- libdir[nlibdir++] = EARGF(usage());
+ Lflag(EARGF(usage()));
break;
case 'T':
INITTEXT = atolwhex(EARGF(usage()));
if(*argv == 0)
usage();
- mywhatsys(); // get goroot, goarch, goos
- if(strcmp(goarch, thestring) != 0)
- print("goarch is not known: %s\n", goarch);
-
- // put goroot in the libdir list.
- libdir[nlibdir++] = smprint("%s/pkg/%s_%s", goroot, goos, goarch);
+ libinit();
if(HEADTYPE == -1) {
HEADTYPE = 2;
edatap = P;
pc = 0;
dtype = 4;
- unlink(outfile);
- cout = create(outfile, 1, 0775);
- if(cout < 0) {
- diag("cannot create %s", outfile);
- errorexit();
- }
version = 0;
cbp = buf.cbuf;
cbc = sizeof(buf.cbuf);
firstp = prg();
lastp = firstp;
- if(INITENTRY == nil) {
- INITENTRY = mal(strlen(goarch)+strlen(goos)+10);
- sprint(INITENTRY, "_rt0_%s_%s", goarch, goos);
- }
- lookup(INITENTRY, 0)->type = SXREF;
-
while(*argv)
objfile(*argv++);
- if(!debug['l']) {
+ if(!debug['l'])
loadlib();
- a = mal(strlen(goroot)+strlen(goarch)+strlen(goos)+20);
- sprint(a, "%s/pkg/%s_%s/runtime.a", goroot, goos, goarch);
- objfile(a);
- }
+
deadcode();
firstp = firstp->link;
if(debug['v']) {
Bprint(&bso, "%5.2f cpu time\n", cputime());
Bprint(&bso, "%ld symbols\n", nsymbol);
- Bprint(&bso, "%ld memory used\n", thunk);
Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
}
errorexit();
}
-void
-loadlib(void)
-{
- int i;
- int32 h;
- Sym *s;
-
-loop:
- xrefresolv = 0;
- for(i=0; i<libraryp; i++) {
- if(debug['v'])
- Bprint(&bso, "%5.2f autolib: %s (from %s)\n", cputime(), library[i], libraryobj[i]);
- objfile(library[i]);
- }
- if(xrefresolv)
- for(h=0; h<nelem(hash); h++)
- for(s = hash[h]; s != S; s = s->link)
- if(s->type == SXREF)
- goto loop;
-}
-
-void
-errorexit(void)
-{
- if(nerrors) {
- if(cout >= 0)
- remove(outfile);
- exits("error");
- }
- exits(0);
-}
-
-void
-objfile(char *file)
-{
- int32 off, esym, cnt, l;
- int work;
- Biobuf *f;
- Sym *s;
- char magbuf[SARMAG];
- char name[100], pname[150];
- struct ar_hdr arhdr;
- char *e, *start, *stop;
-
- if(file[0] == '-' && file[1] == 'l') { // TODO: fix this
- if(debug['9'])
- sprint(name, "/%s/lib/lib", thestring);
- else
- sprint(name, "/usr/%clib/lib", thechar);
- strcat(name, file+2);
- strcat(name, ".a");
- file = name;
- }
- if(debug['v'])
- Bprint(&bso, "%5.2f ldobj: %s\n", cputime(), file);
- Bflush(&bso);
- f = Bopen(file, 0);
- if(f == nil) {
- diag("cannot open file: %s", file);
- errorexit();
- }
- l = Bread(f, magbuf, SARMAG);
- if(l != SARMAG || strncmp(magbuf, ARMAG, SARMAG)){
- /* load it as a regular file */
- l = Bseek(f, 0L, 2);
- Bseek(f, 0L, 0);
- ldobj(f, l, file);
- Bterm(f);
- return;
- }
-
- l = Bread(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR) {
- diag("%s: short read on archive file symbol header", file);
- goto out;
- }
- if(strncmp(arhdr.name, symname, strlen(symname))) {
- diag("%s: first entry not symbol header", file);
- goto out;
- }
-
- esym = SARMAG + SAR_HDR + atolwhex(arhdr.size);
- off = SARMAG + SAR_HDR;
-
- /*
- * just bang the whole symbol file into memory
- */
- Bseek(f, off, 0);
- cnt = esym - off;
- start = mal(cnt + 10);
- cnt = Bread(f, start, cnt);
- if(cnt <= 0){
- Bterm(f);
- return;
- }
- stop = &start[cnt];
- memset(stop, 0, 10);
-
- work = 1;
- while(work) {
- if(debug['v'])
- Bprint(&bso, "%5.2f library pass: %s\n", cputime(), file);
- Bflush(&bso);
- work = 0;
- for(e = start; e < stop; e = strchr(e+5, 0) + 1) {
- s = lookup(e+5, 0);
- if(s->type != SXREF)
- continue;
- sprint(pname, "%s(%s)", file, s->name);
- if(debug['v'])
- Bprint(&bso, "%5.2f library: %s\n", cputime(), pname);
- Bflush(&bso);
- l = e[1] & 0xff;
- l |= (e[2] & 0xff) << 8;
- l |= (e[3] & 0xff) << 16;
- l |= (e[4] & 0xff) << 24;
- Bseek(f, l, 0);
- l = Bread(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR)
- goto bad;
- if(strncmp(arhdr.fmag, ARFMAG, sizeof(arhdr.fmag)))
- goto bad;
- l = SARNAME;
- while(l > 0 && arhdr.name[l-1] == ' ')
- l--;
- sprint(pname, "%s(%.*s)", file, l, arhdr.name);
- l = atolwhex(arhdr.size);
- ldobj(f, l, pname);
- if(s->type == SXREF) {
- diag("%s: failed to load: %s", file, s->name);
- errorexit();
- }
- work = 1;
- xrefresolv = 1;
- }
- }
- return;
-
-bad:
- diag("%s: bad or out of date archive", file);
-out:
- Bterm(f);
-}
-
-int32
-Bget4(Biobuf *f)
-{
- uchar p[4];
-
- if(Bread(f, p, 4) != 4)
- return 0;
- return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-
void
zaddr(Biobuf *f, Adr *a, Sym *h[])
{
u->gotype = a->gotype;
}
-void
-addlib(char *src, char *obj)
-{
- char name[1024], pname[1024], comp[256], *p;
- int i, search;
-
- if(histfrogp <= 0)
- return;
-
- search = 0;
- if(histfrog[0]->name[1] == '/') {
- sprint(name, "");
- i = 1;
- } else
- if(histfrog[0]->name[1] == '.') {
- sprint(name, ".");
- i = 0;
- } else {
- sprint(name, "");
- i = 0;
- search = 1;
- }
-
- for(; i<histfrogp; i++) {
- snprint(comp, sizeof comp, histfrog[i]->name+1);
- for(;;) {
- p = strstr(comp, "$O");
- if(p == 0)
- break;
- memmove(p+1, p+2, strlen(p+2)+1);
- p[0] = thechar;
- }
- for(;;) {
- p = strstr(comp, "$M");
- if(p == 0)
- break;
- if(strlen(comp)+strlen(thestring)-2+1 >= sizeof comp) {
- diag("library component too long");
- return;
- }
- memmove(p+strlen(thestring), p+2, strlen(p+2)+1);
- memmove(p, thestring, strlen(thestring));
- }
- if(strlen(name) + strlen(comp) + 3 >= sizeof(name)) {
- diag("library component too long");
- return;
- }
- strcat(name, "/");
- strcat(name, comp);
- }
-
- if(search) {
- // try dot, -L "libdir", and then goroot.
- for(i=0; i<nlibdir; i++) {
- snprint(pname, sizeof pname, "%s/%s", libdir[i], name);
- if(access(pname, AEXIST) >= 0)
- break;
- }
- strcpy(name, pname);
- }
- cleanname(name);
- if(debug['v'])
- Bprint(&bso, "%5.2f addlib: %s %s pulls in %s\n", cputime(), obj, src, name);
-
- for(i=0; i<libraryp; i++)
- if(strcmp(name, library[i]) == 0)
- return;
- if(libraryp == nelem(library)){
- diag("too many autolibs; skipping %s", name);
- return;
- }
-
- p = mal(strlen(name) + 1);
- strcpy(p, name);
- library[libraryp] = p;
- p = mal(strlen(obj) + 1);
- strcpy(p, obj);
- libraryobj[libraryp] = p;
- libraryp++;
-}
-
-void
-copyhistfrog(char *buf, int nbuf)
-{
- char *p, *ep;
- int i;
-
- p = buf;
- ep = buf + nbuf;
- i = 0;
- for(i=0; i<histfrogp; i++) {
- p = seprint(p, ep, "%s", histfrog[i]->name+1);
- if(i+1<histfrogp && (p == buf || p[-1] != '/'))
- p = seprint(p, ep, "/");
- }
-}
-
-void
-addhist(int32 line, int type)
-{
- Auto *u;
- Sym *s;
- int i, j, k;
-
- u = mal(sizeof(Auto));
- s = mal(sizeof(Sym));
- s->name = mal(2*(histfrogp+1) + 1);
-
- u->asym = s;
- u->type = type;
- u->aoffset = line;
- u->link = curhist;
- curhist = u;
-
- s->name[0] = 0;
- j = 1;
- for(i=0; i<histfrogp; i++) {
- k = histfrog[i]->value;
- s->name[j+0] = k>>8;
- s->name[j+1] = k;
- j += 2;
- }
- s->name[j] = 0;
- s->name[j+1] = 0;
-}
-
-void
-histtoauto(void)
-{
- Auto *l;
-
- while(l = curhist) {
- curhist = l->link;
- l->link = curauto;
- curauto = l;
- }
-}
-
-void
-collapsefrog(Sym *s)
-{
- int i;
-
- /*
- * bad encoding of path components only allows
- * MAXHIST components. if there is an overflow,
- * first try to collapse xxx/..
- */
- for(i=1; i<histfrogp; i++)
- if(strcmp(histfrog[i]->name+1, "..") == 0) {
- memmove(histfrog+i-1, histfrog+i+1,
- (histfrogp-i-1)*sizeof(histfrog[0]));
- histfrogp--;
- goto out;
- }
-
- /*
- * next try to collapse .
- */
- for(i=0; i<histfrogp; i++)
- if(strcmp(histfrog[i]->name+1, ".") == 0) {
- memmove(histfrog+i, histfrog+i+1,
- (histfrogp-i-1)*sizeof(histfrog[0]));
- goto out;
- }
-
- /*
- * last chance, just truncate from front
- */
- memmove(histfrog+0, histfrog+1,
- (histfrogp-1)*sizeof(histfrog[0]));
-
-out:
- histfrog[histfrogp-1] = s;
-}
-
void
nopout(Prog *p)
{
}
void
-ldobj(Biobuf *f, int64 len, char *pn)
+ldobj1(Biobuf *f, int64 len, char *pn)
{
vlong ipc;
Prog *p, *t;
int v, o, r, skip, mode;
Sym *h[NSYM], *s, *di;
uint32 sig;
- static int files;
- static char **filen;
- char **nfilen, *line, *name;
- int ntext, n, c1, c2, c3;
+ char *name;
+ int ntext;
vlong eof;
- vlong import0, import1;
char src[1024];
- src[0] = '\0';
- eof = Boffset(f) + len;
-
ntext = 0;
-
- if((files&15) == 0){
- nfilen = malloc((files+16)*sizeof(char*));
- memmove(nfilen, filen, files*sizeof(char*));
- free(filen);
- filen = nfilen;
- }
- pn = strdup(pn);
- filen[files++] = pn;
-
+ eof = Boffset(f) + len;
di = S;
-
- /* check the header */
- line = Brdline(f, '\n');
- if(line == nil) {
- if(Blinelen(f) > 0) {
- diag("%s: malformed object file", pn);
- return;
- }
- goto eof;
- }
- n = Blinelen(f) - 1;
- if(n != strlen(thestring) || strncmp(line, thestring, n) != 0) {
- if(line)
- line[n] = '\0';
- diag("file not %s [%s]\n", thestring, line);
- return;
- }
-
- /* skip over exports and other info -- ends with \n!\n */
- import0 = Boffset(f);
- c1 = '\n'; // the last line ended in \n
- c2 = Bgetc(f);
- c3 = Bgetc(f);
- while(c1 != '\n' || c2 != '!' || c3 != '\n') {
- c1 = c2;
- c2 = c3;
- c3 = Bgetc(f);
- if(c3 == Beof)
- goto eof;
- }
- import1 = Boffset(f);
-
- Bseek(f, import0, 0);
- ldpkg(f, import1 - import0 - 2, pn); // -2 for !\n
- Bseek(f, import1, 0);
+ src[0] = 0;
newloop:
memset(h, 0, sizeof(h));
if(s->sig != 0 && s->sig != sig)
diag("incompatible type signatures"
"%lux(%s) and %lux(%s) for %s",
- s->sig, filen[s->file], sig, pn, s->name);
+ s->sig, s->file, sig, pn, s->name);
s->sig = sig;
- s->file = files-1;
+ s->file = pn;
}
if(debug['W'])
diag("truncated object file: %s", pn);
}
-Sym*
-lookup(char *symb, int v)
-{
- Sym *s;
- char *p;
- int32 h;
- int l, c;
-
- h = v;
- for(p=symb; c = *p; p++)
- h = h+h+h + c;
- l = (p - symb) + 1;
- if(h < 0)
- h = ~h;
- h %= NHASH;
- for(s = hash[h]; s != S; s = s->link)
- if(s->version == v)
- if(memcmp(s->name, symb, l) == 0)
- return s;
-
- s = mal(sizeof(*s));
- if(debug['v'] > 1)
- Bprint(&bso, "lookup %s\n", symb);
-
- s->name = mal(l + 1);
- memmove(s->name, symb, l);
-
- s->link = hash[h];
- s->type = 0;
- s->version = v;
- s->value = 0;
- s->sig = 0;
- hash[h] = s;
- nsymbol++;
- return s;
-}
-
Prog*
prg(void)
{
}
}
-void
-nuxiinit(void)
-{
- int i, c;
-
- for(i=0; i<4; i++) {
- c = find1(0x04030201L, i+1);
- if(i < 2)
- inuxi2[i] = c;
- if(i < 1)
- inuxi1[i] = c;
- inuxi4[i] = c;
- inuxi8[i] = c;
- inuxi8[i+4] = c+4;
- fnuxi4[i] = c;
- fnuxi8[i] = c;
- fnuxi8[i+4] = c+4;
- }
- if(debug['v']) {
- Bprint(&bso, "inuxi = ");
- for(i=0; i<1; i++)
- Bprint(&bso, "%d", inuxi1[i]);
- Bprint(&bso, " ");
- for(i=0; i<2; i++)
- Bprint(&bso, "%d", inuxi2[i]);
- Bprint(&bso, " ");
- for(i=0; i<4; i++)
- Bprint(&bso, "%d", inuxi4[i]);
- Bprint(&bso, " ");
- for(i=0; i<8; i++)
- Bprint(&bso, "%d", inuxi8[i]);
- Bprint(&bso, "\nfnuxi = ");
- for(i=0; i<4; i++)
- Bprint(&bso, "%d", fnuxi4[i]);
- Bprint(&bso, " ");
- for(i=0; i<8; i++)
- Bprint(&bso, "%d", fnuxi8[i]);
- Bprint(&bso, "\n");
- }
- Bflush(&bso);
-}
-
-int
-find1(int32 l, int c)
-{
- char *p;
- int i;
-
- p = (char*)&l;
- for(i=0; i<4; i++)
- if(*p++ == c)
- return i;
- return 0;
-}
-
-int
-find2(int32 l, int c)
-{
- short *p;
- int i;
-
- p = (short*)&l;
- for(i=0; i<4; i+=2) {
- if(((*p >> 8) & 0xff) == c)
- return i;
- if((*p++ & 0xff) == c)
- return i+1;
- }
- return 0;
-}
-
-int32
-ieeedtof(Ieee *e)
-{
- int exp;
- int32 v;
-
- if(e->h == 0)
- return 0;
- exp = (e->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- v = (e->h & 0xfffffL) << 3;
- v |= (e->l >> 29) & 0x7L;
- if((e->l >> 28) & 1) {
- v++;
- if(v & 0x800000L) {
- v = (v & 0x7fffffL) >> 1;
- exp++;
- }
- }
- if(exp <= -126 || exp >= 130)
- diag("double fp to single fp overflow");
- v |= ((exp + 126) & 0xffL) << 23;
- v |= e->h & 0x80000000L;
- return v;
-}
-
-double
-ieeedtod(Ieee *ieeep)
-{
- Ieee e;
- double fr;
- int exp;
-
- if(ieeep->h & (1L<<31)) {
- e.h = ieeep->h & ~(1L<<31);
- e.l = ieeep->l;
- return -ieeedtod(&e);
- }
- if(ieeep->l == 0 && ieeep->h == 0)
- return 0;
- fr = ieeep->l & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieeep->l>>16) & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieeep->h & (1L<<20)-1L) | (1L<<20);
- fr /= 1L<<21;
- exp = (ieeep->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- return ldexp(fr, exp);
-}
-
-void
-undefsym(Sym *s)
-{
- int n;
-
- n = imports;
- if(s->value != 0)
- diag("value != 0 on SXREF");
- if(n >= 1<<Rindex)
- diag("import index %d out of range", n);
- s->value = n<<Roffset;
- s->type = SUNDEF;
- imports++;
-}
-
-void
-zerosig(char *sp)
-{
- Sym *s;
-
- s = lookup(sp, 0);
- s->sig = 0;
-}
-
-void
-readundefs(char *f, int t)
-{
- int i, n;
- Sym *s;
- Biobuf *b;
- char *l, buf[256], *fields[64];
-
- if(f == nil)
- return;
- b = Bopen(f, OREAD);
- if(b == nil){
- diag("could not open %s: %r", f);
- errorexit();
- }
- while((l = Brdline(b, '\n')) != nil){
- n = Blinelen(b);
- if(n >= sizeof(buf)){
- diag("%s: line too long", f);
- errorexit();
- }
- memmove(buf, l, n);
- buf[n-1] = '\0';
- n = getfields(buf, fields, nelem(fields), 1, " \t\r\n");
- if(n == nelem(fields)){
- diag("%s: bad format", f);
- errorexit();
- }
- for(i = 0; i < n; i++){
- s = lookup(fields[i], 0);
- s->type = SXREF;
- s->subtype = t;
- if(t == SIMPORT)
- nimports++;
- else
- nexports++;
- }
- }
- Bterm(b);
-}
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
// see ../../runtime/proc.c:/StackGuard
enum
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
static int rexflag;
static int asmode;
OFILES=\
asm.$O\
- compat.$O\
elf.$O\
enam.$O\
+ lib.$O\
list.$O\
macho.$O\
obj.$O\
install: $(TARG)
cp $(TARG) $(GOBIN)/$(TARG)
-go.o: ../ld/go.c
-elf.o: ../ld/elf.c
-macho.o: ../ld/macho.c
+%.$O: ../ld/%.c
+ $(CC) $(CFLAGS) -c -I. ../ld/$*.c
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
#include "../ld/elf.h"
#include "../ld/macho.h"
{
Prog *p;
int32 v, magic;
- int a, i, dynsym;
+ int a, dynsym;
uint32 va, fo, w, symo, startva, machlink;
uchar *op1;
ulong expectpc;
ElfEhdr *eh;
ElfPhdr *ph, *pph;
ElfShdr *sh;
- MachoHdr *mh;
- MachoSect *msect;
- MachoSeg *ms;
- MachoDebug *md;
- MachoLoad *ml;
if(debug['v'])
Bprint(&bso, "%5.2f asmb\n", cputime());
+++ /dev/null
-// 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 "l.h"
-#include "../ld/elf.c"
+++ /dev/null
-// 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 "l.h"
-enum
-{
- PtrSize = 4
-};
-#include "../ld/go.c"
#define EXTERN extern
#endif
+enum
+{
+ PtrSize = 4
+};
+
#define P ((Prog*)0)
#define S ((Sym*)0)
#define TNAME (curtext?curtext->from.sym->name:noname)
uchar subtype;
uchar dupok;
uchar reachable;
- ushort file;
int32 value;
int32 size;
int32 sig;
Prog* text;
Prog* data;
Sym* gotype;
+ char* file;
char* dynldname;
char* dynldlib;
};
EXTERN int cbc;
EXTERN char* cbp;
EXTERN char* pcstr;
-EXTERN int cout;
EXTERN Auto* curauto;
EXTERN Auto* curhist;
EXTERN Prog* curp;
EXTERN char literal[32];
EXTERN Prog* etextp;
EXTERN Prog* firstp;
-EXTERN uchar fnuxi8[8];
-EXTERN uchar fnuxi4[4];
-EXTERN Sym* hash[NHASH];
-EXTERN Sym* histfrog[MAXHIST];
-EXTERN int histfrogp;
-EXTERN int histgen;
-EXTERN char* library[50];
-EXTERN char* libraryobj[50];
-EXTERN int libraryp;
EXTERN int xrefresolv;
-EXTERN uchar inuxi1[1];
-EXTERN uchar inuxi2[2];
-EXTERN uchar inuxi4[4];
EXTERN uchar ycover[Ymax*Ymax];
EXTERN uchar* andptr;
EXTERN uchar and[100];
EXTERN int32 lcsize;
EXTERN int maxop;
EXTERN int nerrors;
-EXTERN int32 nsymbol;
EXTERN char* noname;
-EXTERN char* outfile;
EXTERN int32 pc;
EXTERN int32 spsize;
EXTERN Sym* symlist;
EXTERN int32 symsize;
EXTERN Prog* textp;
EXTERN int32 textsize;
-EXTERN int32 thunk;
EXTERN int version;
EXTERN Prog zprg;
EXTERN int dtype;
-EXTERN char thechar;
EXTERN int tlsoffset;
EXTERN Adr* reloca;
void dostkoff(void);
void dynreloc(Sym*, uint32, int);
int32 entryvalue(void);
-void errorexit(void);
void export(void);
-int find1(int32, int);
-int find2(int32, int);
void follow(void);
-void gethunk(void);
-void histtoauto(void);
-double ieeedtod(Ieee*);
-int32 ieeedtof(Ieee*);
void import(void);
-void ldobj(Biobuf*, int32, char*);
-void loadlib(void);
void listinit(void);
Sym* lookup(char*, int);
void lput(int32);
void* mal(uint32);
Prog* newdata(Sym*, int, int, int);
Prog* newtext(Prog*, Sym*);
-void nuxiinit(void);
-void objfile(char*);
int opsize(Prog*);
void patch(void);
Prog* prg(void);
-void readundefs(char*, int);
int relinv(int);
int32 reuse(Prog*, Sym*);
int32 rnd(int32, int32);
void s8put(char*);
void span(void);
void undef(void);
-void undefsym(Sym*);
int32 vaddr(Adr*);
int32 symaddr(Sym*);
void wput(ushort);
void xdefine(char*, int, int32);
void xfol(Prog*);
void zaddr(Biobuf*, Adr*, Sym*[]);
-void zerosig(char*);
uint32 machheadr(void);
-void whatsys(void);
vlong addaddr(Sym *s, Sym *t);
vlong addsize(Sym *s, Sym *t);
vlong addstring(Sym *s, char *str);
* go.c
*/
void deadcode(void);
-void ldpkg(Biobuf *f, int64 len, char *filename);
-
-
-/* set by call to whatsys() */
-extern char* goroot;
-extern char* goarch;
-extern char* goos;
/* Native is little-endian */
#define LPUT(a) lputl(a)
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
void
listinit(void)
+++ /dev/null
-// 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 "l.h"
-#include "../ld/macho.c"
#define EXTERN
#include "l.h"
+#include "../ld/lib.h"
#include "../ld/elf.h"
#include "../ld/macho.h"
#include <ar.h>
#endif
char *noname = "<none>";
-char symname[] = SYMDEF;
char thechar = '8';
char *thestring = "386";
-char* libdir[16]; // contains "." first, goroot last
-int nlibdir = 0;
/*
* -H0 -T0x40004C -D0x10000000 is garbage unix
main(int argc, char *argv[])
{
int i, c;
- char *a;
Binit(&bso, 1, OWRITE);
cout = -1;
INITDAT = -1;
INITRND = -1;
INITENTRY = 0;
- libdir[nlibdir++] = "."; // look in dot first
ARGBEGIN {
default:
HEADTYPE = atolwhex(EARGF(usage()));
break;
case 'L':
- if(nlibdir >= nelem(libdir)-1) {
- print("too many -L's: %d\n", nlibdir);
- usage();
- }
- libdir[nlibdir++] = EARGF(usage());
+ Lflag(EARGF(usage()));
break;
case 'T':
INITTEXT = atolwhex(EARGF(usage()));
if(*argv == 0)
usage();
- whatsys(); // get goroot, goarch, goos
- if(strcmp(goarch, thestring) != 0)
- print("goarch is not known: %s\n", goarch);
-
- // put goroot in the libdir list.
- libdir[nlibdir++] = smprint("%s/pkg/%s_%s", goroot, goos, goarch);
+ libinit();
if(HEADTYPE == -1) {
HEADTYPE = 2;
edatap = P;
pc = 0;
dtype = 4;
- unlink(outfile);
- cout = create(outfile, 1, 0775);
- if(cout < 0) {
- diag("cannot create %s", outfile);
- errorexit();
- }
version = 0;
cbp = buf.cbuf;
cbc = sizeof(buf.cbuf);
firstp = prg();
lastp = firstp;
- if(INITENTRY == nil) {
- INITENTRY = mal(strlen(goarch)+strlen(goos)+10);
- sprint(INITENTRY, "_rt0_%s_%s", goarch, goos);
- }
- lookup(INITENTRY, 0)->type = SXREF;
-
while(*argv)
objfile(*argv++);
- if(!debug['l']) {
+ if(!debug['l'])
loadlib();
- a = mal(strlen(goroot)+strlen(goarch)+strlen(goos)+20);
- sprint(a, "%s/pkg/%s_%s/runtime.a", goroot, goos, goarch);
- objfile(a);
- }
+
deadcode();
firstp = firstp->link;
if(debug['v']) {
Bprint(&bso, "%5.2f cpu time\n", cputime());
Bprint(&bso, "%ld symbols\n", nsymbol);
- Bprint(&bso, "%ld memory used\n", thunk);
Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
}
errorexit();
}
-void
-loadlib(void)
-{
- int i;
- int32 h;
- Sym *s;
-
-loop:
- xrefresolv = 0;
- for(i=0; i<libraryp; i++) {
- if(debug['v'])
- Bprint(&bso, "%5.2f autolib: %s (from %s)\n", cputime(), library[i], libraryobj[i]);
- objfile(library[i]);
- }
- if(xrefresolv)
- for(h=0; h<nelem(hash); h++)
- for(s = hash[h]; s != S; s = s->link)
- if(s->type == SXREF)
- goto loop;
-}
-
-void
-errorexit(void)
-{
-
- if(nerrors) {
- if(cout >= 0)
- remove(outfile);
- exits("error");
- }
- exits(0);
-}
-
-void
-objfile(char *file)
-{
- int32 off, esym, cnt, l;
- int work;
- Biobuf *f;
- Sym *s;
- char magbuf[SARMAG];
- char name[100], pname[150];
- struct ar_hdr arhdr;
- char *e, *start, *stop;
-
- if(file[0] == '-' && file[1] == 'l') { // TODO: fix this
- if(debug['9'])
- sprint(name, "/%s/lib/lib", thestring);
- else
- sprint(name, "/usr/%clib/lib", thechar);
- strcat(name, file+2);
- strcat(name, ".a");
- file = name;
- }
- if(debug['v'])
- Bprint(&bso, "%5.2f ldobj: %s\n", cputime(), file);
- Bflush(&bso);
- f = Bopen(file, 0);
- if(f == nil) {
- diag("cannot open file: %s", file);
- errorexit();
- }
- l = Bread(f, magbuf, SARMAG);
- if(l != SARMAG || strncmp(magbuf, ARMAG, SARMAG)){
- /* load it as a regular file */
- l = Bseek(f, 0L, 2);
- Bseek(f, 0L, 0);
- ldobj(f, l, file);
- Bterm(f);
- return;
- }
-
- l = Bread(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR) {
- diag("%s: short read on archive file symbol header", file);
- goto out;
- }
- if(strncmp(arhdr.name, symname, strlen(symname))) {
- diag("%s: first entry not symbol header", file);
- goto out;
- }
-
- esym = SARMAG + SAR_HDR + atolwhex(arhdr.size);
- off = SARMAG + SAR_HDR;
-
- /*
- * just bang the whole symbol file into memory
- */
- Bseek(f, off, 0);
- cnt = esym - off;
- start = mal(cnt + 10);
- cnt = Bread(f, start, cnt);
- if(cnt <= 0){
- Bterm(f);
- return;
- }
- stop = &start[cnt];
- memset(stop, 0, 10);
-
- work = 1;
- while(work) {
- if(debug['v'])
- Bprint(&bso, "%5.2f library pass: %s\n", cputime(), file);
- Bflush(&bso);
- work = 0;
- for(e = start; e < stop; e = strchr(e+5, 0) + 1) {
- s = lookup(e+5, 0);
- if(s->type != SXREF)
- continue;
- sprint(pname, "%s(%s)", file, s->name);
- if(debug['v'])
- Bprint(&bso, "%5.2f library: %s\n", cputime(), pname);
- Bflush(&bso);
- l = e[1] & 0xff;
- l |= (e[2] & 0xff) << 8;
- l |= (e[3] & 0xff) << 16;
- l |= (e[4] & 0xff) << 24;
- Bseek(f, l, 0);
- l = Bread(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR)
- goto bad;
- if(strncmp(arhdr.fmag, ARFMAG, sizeof(arhdr.fmag)))
- goto bad;
- l = SARNAME;
- while(l > 0 && arhdr.name[l-1] == ' ')
- l--;
- sprint(pname, "%s(%.*s)", file, l, arhdr.name);
- l = atolwhex(arhdr.size);
- ldobj(f, l, pname);
- if(s->type == SXREF) {
- diag("%s: failed to load: %s", file, s->name);
- errorexit();
- }
- work = 1;
- xrefresolv = 1;
- }
- }
- return;
-
-bad:
- diag("%s: bad or out of date archive", file);
-out:
- Bterm(f);
-}
-
-int32
-Bget4(Biobuf *f)
-{
- uchar p[4];
-
- if(Bread(f, p, 4) != 4)
- return 0;
- return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-
void
zaddr(Biobuf *f, Adr *a, Sym *h[])
{
u->gotype = a->gotype;
}
-void
-addlib(char *src, char *obj)
-{
- char name[1024], pname[1024], comp[256], *p;
- int i, search;
-
- if(histfrogp <= 0)
- return;
-
- search = 0;
- if(histfrog[0]->name[1] == '/') {
- sprint(name, "");
- i = 1;
- } else
- if(histfrog[0]->name[1] == '.') {
- sprint(name, ".");
- i = 0;
- } else {
- sprint(name, "");
- i = 0;
- search = 1;
- }
-
- for(; i<histfrogp; i++) {
- snprint(comp, sizeof comp, histfrog[i]->name+1);
- for(;;) {
- p = strstr(comp, "$O");
- if(p == 0)
- break;
- memmove(p+1, p+2, strlen(p+2)+1);
- p[0] = thechar;
- }
- for(;;) {
- p = strstr(comp, "$M");
- if(p == 0)
- break;
- if(strlen(comp)+strlen(thestring)-2+1 >= sizeof comp) {
- diag("library component too long");
- return;
- }
- memmove(p+strlen(thestring), p+2, strlen(p+2)+1);
- memmove(p, thestring, strlen(thestring));
- }
- if(strlen(name) + strlen(comp) + 3 >= sizeof(name)) {
- diag("library component too long");
- return;
- }
- strcat(name, "/");
- strcat(name, comp);
- }
-
- if(search) {
- // try dot, -L "libdir", and then goroot.
- for(i=0; i<nlibdir; i++) {
- snprint(pname, sizeof pname, "%s/%s", libdir[i], name);
- if(access(pname, AEXIST) >= 0)
- break;
- }
- strcpy(name, pname);
- }
- cleanname(name);
- if(debug['v'])
- Bprint(&bso, "%5.2f addlib: %s %s pulls in %s\n", cputime(), obj, src, name);
-
- for(i=0; i<libraryp; i++)
- if(strcmp(name, library[i]) == 0)
- return;
- if(libraryp == nelem(library)){
- diag("too many autolibs; skipping %s", name);
- return;
- }
-
- p = mal(strlen(name) + 1);
- strcpy(p, name);
- library[libraryp] = p;
- p = mal(strlen(obj) + 1);
- strcpy(p, obj);
- libraryobj[libraryp] = p;
- libraryp++;
-}
-
-void
-copyhistfrog(char *buf, int nbuf)
-{
- char *p, *ep;
- int i;
-
- p = buf;
- ep = buf + nbuf;
- i = 0;
- for(i=0; i<histfrogp; i++) {
- p = seprint(p, ep, "%s", histfrog[i]->name+1);
- if(i+1<histfrogp && (p == buf || p[-1] != '/'))
- p = seprint(p, ep, "/");
- }
-}
-
-void
-addhist(int32 line, int type)
-{
- Auto *u;
- Sym *s;
- int i, j, k;
-
- u = mal(sizeof(Auto));
- s = mal(sizeof(Sym));
- s->name = mal(2*(histfrogp+1) + 1);
-
- u->asym = s;
- u->type = type;
- u->aoffset = line;
- u->link = curhist;
- curhist = u;
-
- s->name[0] = 0;
- j = 1;
- for(i=0; i<histfrogp; i++) {
- k = histfrog[i]->value;
- s->name[j+0] = k>>8;
- s->name[j+1] = k;
- j += 2;
- }
- s->name[j] = 0;
- s->name[j+1] = 0;
-}
-
-void
-histtoauto(void)
-{
- Auto *l;
-
- while(l = curhist) {
- curhist = l->link;
- l->link = curauto;
- curauto = l;
- }
-}
-
-void
-collapsefrog(Sym *s)
-{
- int i;
-
- /*
- * bad encoding of path components only allows
- * MAXHIST components. if there is an overflow,
- * first try to collapse xxx/..
- */
- for(i=1; i<histfrogp; i++)
- if(strcmp(histfrog[i]->name+1, "..") == 0) {
- memmove(histfrog+i-1, histfrog+i+1,
- (histfrogp-i-1)*sizeof(histfrog[0]));
- histfrogp--;
- goto out;
- }
-
- /*
- * next try to collapse .
- */
- for(i=0; i<histfrogp; i++)
- if(strcmp(histfrog[i]->name+1, ".") == 0) {
- memmove(histfrog+i, histfrog+i+1,
- (histfrogp-i-1)*sizeof(histfrog[0]));
- goto out;
- }
-
- /*
- * last chance, just truncate from front
- */
- memmove(histfrog+0, histfrog+1,
- (histfrogp-1)*sizeof(histfrog[0]));
-
-out:
- histfrog[histfrogp-1] = s;
-}
-
void
nopout(Prog *p)
{
}
void
-ldobj(Biobuf *f, int32 len, char *pn)
+ldobj1(Biobuf *f, int64 len, char *pn)
{
int32 ipc;
Prog *p, *t;
int v, o, r, skip;
Sym *h[NSYM], *s, *di;
uint32 sig;
- static int files;
- static char **filen;
- char **nfilen;
- int ntext, n, c1, c2, c3;
+ int ntext;
int32 eof;
- int32 import0, import1;
- char *line, *name;
+ char *name;
char src[1024];
- src[0] = '\0';
- eof = Boffset(f) + len;
-
ntext = 0;
-
- if((files&15) == 0){
- nfilen = malloc((files+16)*sizeof(char*));
- memmove(nfilen, filen, files*sizeof(char*));
- free(filen);
- filen = nfilen;
- }
- pn = strdup(pn);
- filen[files++] = pn;
-
+ eof = Boffset(f) + len;
di = S;
+ src[0] = 0;
- /* check the header */
- line = Brdline(f, '\n');
- if(line == nil) {
- if(Blinelen(f) > 0) {
- diag("%s: malformed object file", pn);
- return;
- }
- goto eof;
- }
- n = Blinelen(f) - 1;
- if(n != strlen(thestring) || strncmp(line, thestring, n) != 0) {
- if(line)
- line[n] = '\0';
- diag("file not %s [%s]\n", thestring, line);
- return;
- }
-
- /* skip over exports and other info -- ends with \n!\n */
- import0 = Boffset(f);
- c1 = '\n'; // the last line ended in \n
- c2 = Bgetc(f);
- c3 = Bgetc(f);
- while(c1 != '\n' || c2 != '!' || c3 != '\n') {
- c1 = c2;
- c2 = c3;
- c3 = Bgetc(f);
- if(c3 == Beof)
- goto eof;
- }
- import1 = Boffset(f);
-
- Bseek(f, import0, 0);
- ldpkg(f, import1 - import0 - 2, pn); // -2 for !\n
- Bseek(f, import1, 0);
newloop:
memset(h, 0, sizeof(h));
if(s->sig != 0 && s->sig != sig)
diag("incompatible type signatures"
"%lux(%s) and %lux(%s) for %s",
- s->sig, filen[s->file], sig, pn, s->name);
+ s->sig, s->file, sig, pn, s->name);
s->sig = sig;
- s->file = files-1;
+ s->file = pn;
}
if(debug['W'])
diag("truncated object file: %s", pn);
}
-Sym*
-lookup(char *symb, int v)
-{
- Sym *s;
- char *p;
- int32 h;
- int l, c;
-
- h = v;
- for(p=symb; c = *p; p++)
- h = h+h+h + c;
- l = (p - symb) + 1;
- if(h < 0)
- h = ~h;
- h %= NHASH;
- for(s = hash[h]; s != S; s = s->link)
- if(s->version == v)
- if(memcmp(s->name, symb, l) == 0)
- return s;
-
- s = mal(sizeof(Sym));
- s->name = mal(l + 1);
- memmove(s->name, symb, l);
-
- s->link = hash[h];
- s->type = 0;
- s->version = v;
- s->value = 0;
- s->sig = 0;
- hash[h] = s;
- nsymbol++;
- return s;
-}
-
Prog*
prg(void)
{
}
}
}
-
-void
-nuxiinit(void)
-{
- int i, c;
-
- for(i=0; i<4; i++) {
- c = find1(0x04030201L, i+1);
- if(i < 2)
- inuxi2[i] = c;
- if(i < 1)
- inuxi1[i] = c;
- inuxi4[i] = c;
- fnuxi4[i] = c;
- fnuxi8[i] = c;
- fnuxi8[i+4] = c+4;
- }
- if(debug['v']) {
- Bprint(&bso, "inuxi = ");
- for(i=0; i<1; i++)
- Bprint(&bso, "%d", inuxi1[i]);
- Bprint(&bso, " ");
- for(i=0; i<2; i++)
- Bprint(&bso, "%d", inuxi2[i]);
- Bprint(&bso, " ");
- for(i=0; i<4; i++)
- Bprint(&bso, "%d", inuxi4[i]);
- Bprint(&bso, "\nfnuxi = ");
- for(i=0; i<4; i++)
- Bprint(&bso, "%d", fnuxi4[i]);
- Bprint(&bso, " ");
- for(i=0; i<8; i++)
- Bprint(&bso, "%d", fnuxi8[i]);
- Bprint(&bso, "\n");
- }
- Bflush(&bso);
-}
-
-int
-find1(int32 l, int c)
-{
- char *p;
- int i;
-
- p = (char*)&l;
- for(i=0; i<4; i++)
- if(*p++ == c)
- return i;
- return 0;
-}
-
-int
-find2(int32 l, int c)
-{
- short *p;
- int i;
-
- p = (short*)&l;
- for(i=0; i<4; i+=2) {
- if(((*p >> 8) & 0xff) == c)
- return i;
- if((*p++ & 0xff) == c)
- return i+1;
- }
- return 0;
-}
-
-int32
-ieeedtof(Ieee *e)
-{
- int exp;
- int32 v;
-
- if(e->h == 0)
- return 0;
- exp = (e->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- v = (e->h & 0xfffffL) << 3;
- v |= (e->l >> 29) & 0x7L;
- if((e->l >> 28) & 1) {
- v++;
- if(v & 0x800000L) {
- v = (v & 0x7fffffL) >> 1;
- exp++;
- }
- }
- if(exp <= -126 || exp >= 130)
- diag("double fp to single fp overflow");
- v |= ((exp + 126) & 0xffL) << 23;
- v |= e->h & 0x80000000L;
- return v;
-}
-
-double
-ieeedtod(Ieee *ieeep)
-{
- Ieee e;
- double fr;
- int exp;
-
- if(ieeep->h & (1L<<31)) {
- e.h = ieeep->h & ~(1L<<31);
- e.l = ieeep->l;
- return -ieeedtod(&e);
- }
- if(ieeep->l == 0 && ieeep->h == 0)
- return 0;
- fr = ieeep->l & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieeep->l>>16) & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieeep->h & (1L<<20)-1L) | (1L<<20);
- fr /= 1L<<21;
- exp = (ieeep->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- return ldexp(fr, exp);
-}
-
-void
-undefsym(Sym *s)
-{
- int n;
-
- n = imports;
- if(s->value != 0)
- diag("value != 0 on SXREF");
- if(n >= 1<<Rindex)
- diag("import index %d out of range", n);
- s->value = n<<Roffset;
- s->type = SUNDEF;
- imports++;
-}
-
-void
-zerosig(char *sp)
-{
- Sym *s;
-
- s = lookup(sp, 0);
- s->sig = 0;
-}
-
-void
-readundefs(char *f, int t)
-{
- int i, n;
- Sym *s;
- Biobuf *b;
- char *l, buf[256], *fields[64];
-
- if(f == nil)
- return;
- b = Bopen(f, OREAD);
- if(b == nil){
- diag("could not open %s: %r", f);
- errorexit();
- }
- while((l = Brdline(b, '\n')) != nil){
- n = Blinelen(b);
- if(n >= sizeof(buf)){
- diag("%s: line too long", f);
- errorexit();
- }
- memmove(buf, l, n);
- buf[n-1] = '\0';
- n = getfields(buf, fields, nelem(fields), 1, " \t\r\n");
- if(n == nelem(fields)){
- diag("%s: bad format", f);
- errorexit();
- }
- for(i = 0; i < n; i++){
- s = lookup(fields[i], 0);
- s->type = SXREF;
- s->subtype = t;
- if(t == SIMPORT)
- nimports++;
- else
- nexports++;
- }
- }
- Bterm(b);
-}
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
// see ../../pkg/runtime/proc.c:/StackGuard
enum
// THE SOFTWARE.
#include "l.h"
+#include "../ld/lib.h"
void
span(void)
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-#include "../ld/elf.h"
+#include "l.h"
+#include "lib.h"
+#include "../ld/elf.h"
/*
* We use the 64-bit data structures on both 32- and 64-bit machines
// go-specific code shared across loaders (5l, 6l, 8l).
+#include "l.h"
+#include "../ld/lib.h"
+
// accumulate all type information from .6 files.
// check for inconsistencies.
--- /dev/null
+// Derived from 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.
+
+#include "l.h"
+#include "lib.h"
+#include <ar.h>
+
+char symname[] = SYMDEF;
+char* libdir[16] = { "." };
+int nlibdir = 1;
+int cout = -1;
+
+char* goroot;
+char* goarch;
+char* goos;
+
+void
+Lflag(char *arg)
+{
+ if(nlibdir >= nelem(libdir)-1) {
+ print("too many -L's: %d\n", nlibdir);
+ usage();
+ }
+ libdir[nlibdir++] = arg;
+}
+
+void
+libinit(void)
+{
+ mywhatsys(); // get goroot, goarch, goos
+ if(strcmp(goarch, thestring) != 0)
+ print("goarch is not known: %s\n", goarch);
+
+ // add goroot to the end of the libdir list.
+ libdir[nlibdir++] = smprint("%s/pkg/%s_%s", goroot, goos, goarch);
+
+ unlink(outfile);
+ cout = create(outfile, 1, 0775);
+ if(cout < 0) {
+ diag("cannot create %s", outfile);
+ errorexit();
+ }
+
+ if(INITENTRY == nil) {
+ INITENTRY = mal(strlen(goarch)+strlen(goos)+10);
+ sprint(INITENTRY, "_rt0_%s_%s", goarch, goos);
+ }
+ lookup(INITENTRY, 0)->type = SXREF;
+}
+
+void
+errorexit(void)
+{
+ if(nerrors) {
+ if(cout >= 0)
+ remove(outfile);
+ exits("error");
+ }
+ exits(0);
+}
+
+void
+addlib(char *src, char *obj)
+{
+ char name[1024], pname[1024], comp[256], *p;
+ int i, search;
+
+ if(histfrogp <= 0)
+ return;
+
+ search = 0;
+ if(histfrog[0]->name[1] == '/') {
+ sprint(name, "");
+ i = 1;
+ } else
+ if(histfrog[0]->name[1] == '.') {
+ sprint(name, ".");
+ i = 0;
+ } else {
+ sprint(name, "");
+ i = 0;
+ search = 1;
+ }
+
+ for(; i<histfrogp; i++) {
+ snprint(comp, sizeof comp, histfrog[i]->name+1);
+ for(;;) {
+ p = strstr(comp, "$O");
+ if(p == 0)
+ break;
+ memmove(p+1, p+2, strlen(p+2)+1);
+ p[0] = thechar;
+ }
+ for(;;) {
+ p = strstr(comp, "$M");
+ if(p == 0)
+ break;
+ if(strlen(comp)+strlen(thestring)-2+1 >= sizeof comp) {
+ diag("library component too long");
+ return;
+ }
+ memmove(p+strlen(thestring), p+2, strlen(p+2)+1);
+ memmove(p, thestring, strlen(thestring));
+ }
+ if(strlen(name) + strlen(comp) + 3 >= sizeof(name)) {
+ diag("library component too long");
+ return;
+ }
+ strcat(name, "/");
+ strcat(name, comp);
+ }
+
+ if(search) {
+ // try dot, -L "libdir", and then goroot.
+ for(i=0; i<nlibdir; i++) {
+ snprint(pname, sizeof pname, "%s/%s", libdir[i], name);
+ if(access(pname, AEXIST) >= 0)
+ break;
+ }
+ strcpy(name, pname);
+ }
+ cleanname(name);
+ if(debug['v'])
+ Bprint(&bso, "%5.2f addlib: %s %s pulls in %s\n", cputime(), obj, src, name);
+
+ for(i=0; i<libraryp; i++)
+ if(strcmp(name, library[i]) == 0)
+ return;
+ if(libraryp == nelem(library)){
+ diag("too many autolibs; skipping %s", name);
+ return;
+ }
+
+ p = mal(strlen(name) + 1);
+ strcpy(p, name);
+ library[libraryp] = p;
+ p = mal(strlen(obj) + 1);
+ strcpy(p, obj);
+ libraryobj[libraryp] = p;
+ libraryp++;
+}
+
+void
+loadlib(void)
+{
+ int i;
+ int32 h;
+ Sym *s;
+ char *a;
+
+loop:
+ xrefresolv = 0;
+ for(i=0; i<libraryp; i++) {
+ if(debug['v'])
+ Bprint(&bso, "%5.2f autolib: %s (from %s)\n", cputime(), library[i], libraryobj[i]);
+ objfile(library[i]);
+ }
+ if(xrefresolv)
+ for(h=0; h<nelem(hash); h++)
+ for(s = hash[h]; s != S; s = s->link)
+ if(s->type == SXREF)
+ goto loop;
+
+ i = strlen(goroot)+strlen(goarch)+strlen(goos)+20;
+ a = mal(i);
+ snprint(a, i, "%s/pkg/%s_%s/runtime.a", goroot, goos, goarch);
+ objfile(a);
+}
+
+void
+objfile(char *file)
+{
+ int32 off, esym, cnt, l;
+ int work;
+ Biobuf *f;
+ Sym *s;
+ char magbuf[SARMAG];
+ char name[100], pname[150];
+ struct ar_hdr arhdr;
+ char *e, *start, *stop;
+
+ if(file[0] == '-' && file[1] == 'l') { // TODO: fix this
+ if(debug['9'])
+ sprint(name, "/%s/lib/lib", thestring);
+ else
+ sprint(name, "/usr/%clib/lib", thechar);
+ strcat(name, file+2);
+ strcat(name, ".a");
+ file = name;
+ }
+ if(debug['v'])
+ Bprint(&bso, "%5.2f ldobj: %s\n", cputime(), file);
+ Bflush(&bso);
+ f = Bopen(file, 0);
+ if(f == nil) {
+ diag("cannot open file: %s", file);
+ errorexit();
+ }
+ l = Bread(f, magbuf, SARMAG);
+ if(l != SARMAG || strncmp(magbuf, ARMAG, SARMAG)){
+ /* load it as a regular file */
+ l = Bseek(f, 0L, 2);
+ Bseek(f, 0L, 0);
+ ldobj(f, l, file);
+ Bterm(f);
+ return;
+ }
+
+ l = Bread(f, &arhdr, SAR_HDR);
+ if(l != SAR_HDR) {
+ diag("%s: short read on archive file symbol header", file);
+ goto out;
+ }
+ if(strncmp(arhdr.name, symname, strlen(symname))) {
+ diag("%s: first entry not symbol header", file);
+ goto out;
+ }
+
+ esym = SARMAG + SAR_HDR + atolwhex(arhdr.size);
+ off = SARMAG + SAR_HDR;
+
+ /*
+ * just bang the whole symbol file into memory
+ */
+ Bseek(f, off, 0);
+ cnt = esym - off;
+ start = mal(cnt + 10);
+ cnt = Bread(f, start, cnt);
+ if(cnt <= 0){
+ Bterm(f);
+ return;
+ }
+ stop = &start[cnt];
+ memset(stop, 0, 10);
+
+ work = 1;
+ while(work) {
+ if(debug['v'])
+ Bprint(&bso, "%5.2f library pass: %s\n", cputime(), file);
+ Bflush(&bso);
+ work = 0;
+ for(e = start; e < stop; e = strchr(e+5, 0) + 1) {
+ s = lookup(e+5, 0);
+ if(s->type != SXREF)
+ continue;
+ sprint(pname, "%s(%s)", file, s->name);
+ if(debug['v'])
+ Bprint(&bso, "%5.2f library: %s\n", cputime(), pname);
+ Bflush(&bso);
+ l = e[1] & 0xff;
+ l |= (e[2] & 0xff) << 8;
+ l |= (e[3] & 0xff) << 16;
+ l |= (e[4] & 0xff) << 24;
+ Bseek(f, l, 0);
+ l = Bread(f, &arhdr, SAR_HDR);
+ if(l != SAR_HDR)
+ goto bad;
+ if(strncmp(arhdr.fmag, ARFMAG, sizeof(arhdr.fmag)))
+ goto bad;
+ l = SARNAME;
+ while(l > 0 && arhdr.name[l-1] == ' ')
+ l--;
+ sprint(pname, "%s(%.*s)", file, l, arhdr.name);
+ l = atolwhex(arhdr.size);
+ ldobj(f, l, pname);
+ if(s->type == SXREF) {
+ diag("%s: failed to load: %s", file, s->name);
+ errorexit();
+ }
+ work = 1;
+ xrefresolv = 1;
+ }
+ }
+ return;
+
+bad:
+ diag("%s: bad or out of date archive", file);
+out:
+ Bterm(f);
+}
+
+void
+ldobj(Biobuf *f, int64 len, char *pn)
+{
+ static int files;
+ static char **filen;
+ char **nfilen, *line;
+ int n, c1, c2, c3;
+ vlong import0, import1, eof;
+ char src[1024];
+
+ eof = Boffset(f) + len;
+ src[0] = '\0';
+
+ if((files&15) == 0){
+ nfilen = malloc((files+16)*sizeof(char*));
+ memmove(nfilen, filen, files*sizeof(char*));
+ free(filen);
+ filen = nfilen;
+ }
+ pn = strdup(pn);
+ filen[files++] = pn;
+
+
+ /* check the header */
+ line = Brdline(f, '\n');
+ if(line == nil) {
+ if(Blinelen(f) > 0) {
+ diag("%s: malformed object file", pn);
+ return;
+ }
+ goto eof;
+ }
+ n = Blinelen(f) - 1;
+ if(n != strlen(thestring) || strncmp(line, thestring, n) != 0) {
+ if(line)
+ line[n] = '\0';
+ diag("file not %s [%s]\n", thestring, line);
+ return;
+ }
+
+ /* skip over exports and other info -- ends with \n!\n */
+ import0 = Boffset(f);
+ c1 = '\n'; // the last line ended in \n
+ c2 = Bgetc(f);
+ c3 = Bgetc(f);
+ while(c1 != '\n' || c2 != '!' || c3 != '\n') {
+ c1 = c2;
+ c2 = c3;
+ c3 = Bgetc(f);
+ if(c3 == Beof)
+ goto eof;
+ }
+ import1 = Boffset(f);
+
+ Bseek(f, import0, 0);
+ ldpkg(f, import1 - import0 - 2, pn); // -2 for !\n
+ Bseek(f, import1, 0);
+
+ ldobj1(f, eof - Boffset(f), pn);
+ return;
+
+eof:
+ diag("truncated object file: %s", pn);
+}
+
+Sym*
+lookup(char *symb, int v)
+{
+ Sym *s;
+ char *p;
+ int32 h;
+ int l, c;
+
+ h = v;
+ for(p=symb; c = *p; p++)
+ h = h+h+h + c;
+ l = (p - symb) + 1;
+ if(h < 0)
+ h = ~h;
+ h %= NHASH;
+ for(s = hash[h]; s != S; s = s->link)
+ if(s->version == v)
+ if(memcmp(s->name, symb, l) == 0)
+ return s;
+
+ s = mal(sizeof(*s));
+ if(debug['v'] > 1)
+ Bprint(&bso, "lookup %s\n", symb);
+
+ s->name = mal(l + 1);
+ memmove(s->name, symb, l);
+
+ s->link = hash[h];
+ s->type = 0;
+ s->version = v;
+ s->value = 0;
+ s->sig = 0;
+ hash[h] = s;
+ nsymbol++;
+ return s;
+}
+
+void
+copyhistfrog(char *buf, int nbuf)
+{
+ char *p, *ep;
+ int i;
+
+ p = buf;
+ ep = buf + nbuf;
+ i = 0;
+ for(i=0; i<histfrogp; i++) {
+ p = seprint(p, ep, "%s", histfrog[i]->name+1);
+ if(i+1<histfrogp && (p == buf || p[-1] != '/'))
+ p = seprint(p, ep, "/");
+ }
+}
+
+void
+addhist(int32 line, int type)
+{
+ Auto *u;
+ Sym *s;
+ int i, j, k;
+
+ u = mal(sizeof(Auto));
+ s = mal(sizeof(Sym));
+ s->name = mal(2*(histfrogp+1) + 1);
+
+ u->asym = s;
+ u->type = type;
+ u->aoffset = line;
+ u->link = curhist;
+ curhist = u;
+
+ s->name[0] = 0;
+ j = 1;
+ for(i=0; i<histfrogp; i++) {
+ k = histfrog[i]->value;
+ s->name[j+0] = k>>8;
+ s->name[j+1] = k;
+ j += 2;
+ }
+ s->name[j] = 0;
+ s->name[j+1] = 0;
+}
+
+void
+histtoauto(void)
+{
+ Auto *l;
+
+ while(l = curhist) {
+ curhist = l->link;
+ l->link = curauto;
+ curauto = l;
+ }
+}
+
+void
+collapsefrog(Sym *s)
+{
+ int i;
+
+ /*
+ * bad encoding of path components only allows
+ * MAXHIST components. if there is an overflow,
+ * first try to collapse xxx/..
+ */
+ for(i=1; i<histfrogp; i++)
+ if(strcmp(histfrog[i]->name+1, "..") == 0) {
+ memmove(histfrog+i-1, histfrog+i+1,
+ (histfrogp-i-1)*sizeof(histfrog[0]));
+ histfrogp--;
+ goto out;
+ }
+
+ /*
+ * next try to collapse .
+ */
+ for(i=0; i<histfrogp; i++)
+ if(strcmp(histfrog[i]->name+1, ".") == 0) {
+ memmove(histfrog+i, histfrog+i+1,
+ (histfrogp-i-1)*sizeof(histfrog[0]));
+ goto out;
+ }
+
+ /*
+ * last chance, just truncate from front
+ */
+ memmove(histfrog+0, histfrog+1,
+ (histfrogp-1)*sizeof(histfrog[0]));
+
+out:
+ histfrog[histfrogp-1] = s;
+}
+
+void
+nuxiinit(void)
+{
+ int i, c;
+
+ for(i=0; i<4; i++) {
+ c = find1(0x04030201L, i+1);
+ if(i < 2)
+ inuxi2[i] = c;
+ if(i < 1)
+ inuxi1[i] = c;
+ inuxi4[i] = c;
+ inuxi8[i] = c;
+ inuxi8[i+4] = c+4;
+ fnuxi4[i] = c;
+ fnuxi8[i] = c;
+ fnuxi8[i+4] = c+4;
+ }
+ if(debug['v']) {
+ Bprint(&bso, "inuxi = ");
+ for(i=0; i<1; i++)
+ Bprint(&bso, "%d", inuxi1[i]);
+ Bprint(&bso, " ");
+ for(i=0; i<2; i++)
+ Bprint(&bso, "%d", inuxi2[i]);
+ Bprint(&bso, " ");
+ for(i=0; i<4; i++)
+ Bprint(&bso, "%d", inuxi4[i]);
+ Bprint(&bso, " ");
+ for(i=0; i<8; i++)
+ Bprint(&bso, "%d", inuxi8[i]);
+ Bprint(&bso, "\nfnuxi = ");
+ for(i=0; i<4; i++)
+ Bprint(&bso, "%d", fnuxi4[i]);
+ Bprint(&bso, " ");
+ for(i=0; i<8; i++)
+ Bprint(&bso, "%d", fnuxi8[i]);
+ Bprint(&bso, "\n");
+ }
+ Bflush(&bso);
+}
+
+int
+find1(int32 l, int c)
+{
+ char *p;
+ int i;
+
+ p = (char*)&l;
+ for(i=0; i<4; i++)
+ if(*p++ == c)
+ return i;
+ return 0;
+}
+
+int
+find2(int32 l, int c)
+{
+ short *p;
+ int i;
+
+ p = (short*)&l;
+ for(i=0; i<4; i+=2) {
+ if(((*p >> 8) & 0xff) == c)
+ return i;
+ if((*p++ & 0xff) == c)
+ return i+1;
+ }
+ return 0;
+}
+
+int32
+ieeedtof(Ieee *e)
+{
+ int exp;
+ int32 v;
+
+ if(e->h == 0)
+ return 0;
+ exp = (e->h>>20) & ((1L<<11)-1L);
+ exp -= (1L<<10) - 2L;
+ v = (e->h & 0xfffffL) << 3;
+ v |= (e->l >> 29) & 0x7L;
+ if((e->l >> 28) & 1) {
+ v++;
+ if(v & 0x800000L) {
+ v = (v & 0x7fffffL) >> 1;
+ exp++;
+ }
+ }
+ if(exp <= -126 || exp >= 130)
+ diag("double fp to single fp overflow");
+ v |= ((exp + 126) & 0xffL) << 23;
+ v |= e->h & 0x80000000L;
+ return v;
+}
+
+double
+ieeedtod(Ieee *ieeep)
+{
+ Ieee e;
+ double fr;
+ int exp;
+
+ if(ieeep->h & (1L<<31)) {
+ e.h = ieeep->h & ~(1L<<31);
+ e.l = ieeep->l;
+ return -ieeedtod(&e);
+ }
+ if(ieeep->l == 0 && ieeep->h == 0)
+ return 0;
+ fr = ieeep->l & ((1L<<16)-1L);
+ fr /= 1L<<16;
+ fr += (ieeep->l>>16) & ((1L<<16)-1L);
+ fr /= 1L<<16;
+ fr += (ieeep->h & (1L<<20)-1L) | (1L<<20);
+ fr /= 1L<<21;
+ exp = (ieeep->h>>20) & ((1L<<11)-1L);
+ exp -= (1L<<10) - 2L;
+ return ldexp(fr, exp);
+}
+
+void
+undefsym(Sym *s)
+{
+ int n;
+
+ n = imports;
+ if(s->value != 0)
+ diag("value != 0 on SXREF");
+ if(n >= 1<<Rindex)
+ diag("import index %d out of range", n);
+ s->value = n<<Roffset;
+ s->type = SUNDEF;
+ imports++;
+}
+
+void
+zerosig(char *sp)
+{
+ Sym *s;
+
+ s = lookup(sp, 0);
+ s->sig = 0;
+}
+
+void
+readundefs(char *f, int t)
+{
+ int i, n;
+ Sym *s;
+ Biobuf *b;
+ char *l, buf[256], *fields[64];
+
+ if(f == nil)
+ return;
+ b = Bopen(f, OREAD);
+ if(b == nil){
+ diag("could not open %s: %r", f);
+ errorexit();
+ }
+ while((l = Brdline(b, '\n')) != nil){
+ n = Blinelen(b);
+ if(n >= sizeof(buf)){
+ diag("%s: line too long", f);
+ errorexit();
+ }
+ memmove(buf, l, n);
+ buf[n-1] = '\0';
+ n = getfields(buf, fields, nelem(fields), 1, " \t\r\n");
+ if(n == nelem(fields)){
+ diag("%s: bad format", f);
+ errorexit();
+ }
+ for(i = 0; i < n; i++){
+ s = lookup(fields[i], 0);
+ s->type = SXREF;
+ s->subtype = t;
+ if(t == SIMPORT)
+ nimports++;
+ else
+ nexports++;
+ }
+ }
+ Bterm(b);
+}
+
+int32
+Bget4(Biobuf *f)
+{
+ uchar p[4];
+
+ if(Bread(f, p, 4) != 4)
+ return 0;
+ return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
+}
+
+void
+mywhatsys(void)
+{
+ char *s;
+
+ goroot = getenv("GOROOT");
+ goarch = getenv("GOARCH");
+ goos = getenv("GOOS");
+
+ if(goroot == nil) {
+ s = getenv("HOME");
+ if(s == nil)
+ s = "/home/ken";
+ goroot = mal(strlen(s) + 10);
+ strcpy(goroot, s);
+ strcat(goroot, "/go");
+ }
+ if(goarch == nil) {
+ goarch = "amd64";
+ }
+ if(goos == nil) {
+ goos = "linux";
+ }
+}
+
+int
+pathchar(void)
+{
+ return '/';
+}
+
+static uchar* hunk;
+static uint32 nhunk;
+#define NHUNK (10UL<<20)
+
+void*
+mal(uint32 n)
+{
+ void *v;
+
+ while(n & 7)
+ n++;
+ if(n > NHUNK) {
+ v = malloc(n);
+ memset(v, 0, n);
+ return v;
+ }
+ if(n > nhunk) {
+ hunk = malloc(NHUNK);
+ nhunk = NHUNK;
+ }
+
+ v = hunk;
+ nhunk -= n;
+ hunk += n;
+
+ memset(v, 0, n);
+ return v;
+}
--- /dev/null
+// 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.
+
+extern char symname[];
+extern char *libdir[];
+extern int nlibdir;
+extern int cout;
+
+EXTERN char* INITENTRY;
+EXTERN char thechar;
+EXTERN char* thestring;
+EXTERN char* library[50];
+EXTERN char* libraryobj[50];
+EXTERN int libraryp;
+EXTERN Sym* hash[NHASH];
+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;
+
+void addlib(char *src, char *obj);
+void copyhistfrog(char *buf, int nbuf);
+void addhist(int32 line, int type);
+void histtoauto(void);
+void collapsefrog(Sym *s);
+Sym* lookup(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 objfile(char *file);
+void libinit(void);
+void Lflag(char *arg);
+void usage(void);
+void ldobj1(Biobuf *f, int64 len, char *pn);
+void ldobj(Biobuf*, int64, char*);
+void ldpkg(Biobuf*, int64, char*);
+
+int pathchar(void);
+void* mal(uint32);
+void mywhatsys(void);
+
+/* set by call to mywhatsys() */
+extern char* goroot;
+extern char* goarch;
+extern char* goos;
// Mach-O file writing
// http://developer.apple.com/mac/library/DOCUMENTATION/DeveloperTools/Conceptual/MachORuntime/Reference/reference.html
+#include "l.h"
+#include "../ld/lib.h"
#include "../ld/macho.h"
static int macho64;