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factor portable object+library bits out of 5l/6l/8l into ld

Browse Source 
R=r
DELTA=3214  (904 added, 2260 deleted, 50 changed)
OCL=35425
CL=35427
This commit is contained in:
Russ Cox 2009-10-07 00:11:59 -07:00
parent cfdb3a5639
commit c2874976e4
33 changed files with 952 additions and 2085 deletions
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6
src/cmd/5l/Makefile
View File

@ -9,8 +9,8 @@ TARG=\
OFILES=\
asm.$O\
compat.$O\
enam.$O\
lib.$O\
list.$O\
noop.$O\
obj.$O\
@ -24,7 +24,6 @@ HFILES=\
l.h\
../5l/5.out.h\
$(TARG): $(OFILES)
$(LD) -o $(TARG) -L$(GOROOT)/lib $(OFILES) -lbio -l9
@ -38,3 +37,6 @@ clean:
install: $(TARG)
cp $(TARG) $(GOBIN)/$(TARG)
%.$O: ../ld/%.c
$(CC) $(CFLAGS) -c -I. ../ld/$*.c

1
src/cmd/5l/asm.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
int32 OFFSET;

12
src/cmd/5l/go.c
View File

@ -1,12 +0,0 @@
// 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"

32
src/cmd/5l/l.h
View File

@ -33,6 +33,11 @@
#include <bio.h>
#include "../5l/5.out.h"
enum
{
PtrSize = 4
};
#ifndef EXTERN
#define EXTERN extern
#endif
@ -119,7 +124,6 @@ struct Sym
short frame;
uchar subtype;
uchar reachable;
ushort file;
int32 value;
int32 sig;
uchar used;
@ -131,6 +135,7 @@ struct Sym
Prog* text;
Prog* data;
Sym* gotype;
char* file;
char* dynldname;
char* dynldlib;
};
@ -313,20 +318,8 @@ EXTERN char debug[128];
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];
@ -342,7 +335,6 @@ EXTERN uint32 stroffset;
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;
@ -418,19 +410,12 @@ void doprof1(void);
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);
@ -442,8 +427,6 @@ void* mysbrk(uint32);
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*);
@ -464,19 +447,16 @@ void prepend(Prog*, 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);

1
src/cmd/5l/list.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
void
listinit(void)

659
src/cmd/5l/obj.c
View File

@ -30,7 +30,7 @@
#define EXTERN
#include "l.h"
#include "compat.h"
#include "../ld/lib.h"
#include <ar.h>
#ifndef DEFAULT
@ -38,11 +38,8 @@
#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
@ -74,24 +71,29 @@ isobjfile(char *f)
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:
@ -100,38 +102,25 @@ main(int argc, char *argv[])
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 */
@ -149,16 +138,10 @@ main(int argc, char *argv[])
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;
@ -261,14 +244,6 @@ main(int argc, char *argv[])
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;
@ -277,20 +252,11 @@ main(int argc, char *argv[])
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;
@ -340,7 +306,6 @@ out:
}
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));
}
@ -348,160 +313,6 @@ out:
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[])
{
@ -602,163 +413,6 @@ 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)
{
@ -770,67 +424,20 @@ 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));
@ -872,9 +479,9 @@ loop:
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'])
@ -918,10 +525,12 @@ loop:
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' */
@ -1213,41 +822,6 @@ eof:
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)
{
@ -1436,114 +1010,6 @@ doprof2(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)
{
@ -1566,68 +1032,3 @@ appendp(Prog *q)
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);
}

1
src/cmd/5l/pass.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
void
dodata(void)

1
src/cmd/5l/span.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
static struct {
uint32 start;

10
src/cmd/6l/Makefile
View File

@ -9,10 +9,10 @@ TARG=\
OFILES=\
asm.$O\
compat.$O\
elf.$O\
enam.$O\
go.$O\
lib.$O\
list.$O\
macho.$O\
obj.$O\
@ -23,10 +23,9 @@ OFILES=\
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
@ -42,6 +41,5 @@ clean:
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

1
src/cmd/6l/asm.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
#include "../ld/elf.h"
#include "../ld/macho.h"

6
src/cmd/6l/elf.c
View File

@ -1,6 +0,0 @@
// 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"

10
src/cmd/6l/go.c
View File

@ -1,10 +0,0 @@
// 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"

41
src/cmd/6l/l.h
View File

@ -32,12 +32,16 @@
#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)
@ -115,7 +119,6 @@ struct Sym
short version;
short become;
short frame;
ushort file;
uchar subtype;
uchar dupok;
uchar reachable;
@ -126,6 +129,7 @@ struct Sym
Prog* text;
Prog* data;
Sym* gotype;
char* file;
char* dynldname;
char* dynldlib;
};
@ -301,7 +305,6 @@ EXTERN int32 bsssize;
EXTERN int cbc;
EXTERN char* cbp;
EXTERN char* pcstr;
EXTERN int cout;
EXTERN Auto* curauto;
EXTERN Auto* curhist;
EXTERN Prog* curp;
@ -313,21 +316,7 @@ EXTERN char debug[128];
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;
@ -337,8 +326,6 @@ EXTERN int regrex[D_NONE+1];
EXTERN Prog* lastp;
EXTERN int32 lcsize;
EXTERN int nerrors;
EXTERN int32 nhunk;
EXTERN int32 nsymbol;
EXTERN char* noname;
EXTERN char* outfile;
EXTERN vlong pc;
@ -347,7 +334,6 @@ EXTERN Sym* symlist;
EXTERN int32 symsize;
EXTERN Prog* textp;
EXTERN vlong textsize;
EXTERN int32 thunk;
EXTERN int version;
EXTERN Prog zprg;
EXTERN int dtype;
@ -411,21 +397,11 @@ void doprof2(void);
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);
@ -436,20 +412,16 @@ void* mysbrk(uint32);
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);
@ -458,7 +430,6 @@ void wputl(uint16);
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);

1
src/cmd/6l/list.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
static Prog* bigP;

6
src/cmd/6l/macho.c
View File

@ -1,6 +0,0 @@
// 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"

655
src/cmd/6l/obj.c
View File

@ -30,17 +30,15 @@
#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
@ -85,7 +83,6 @@ void
main(int argc, char *argv[])
{
int i, c;
char *a;
Binit(&bso, 1, OWRITE);
cout = -1;
@ -98,7 +95,6 @@ main(int argc, char *argv[])
INITDAT = -1;
INITRND = -1;
INITENTRY = 0;
libdir[nlibdir++] = "."; // look in dot first
ARGBEGIN {
default:
@ -116,11 +112,7 @@ main(int argc, char *argv[])
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()));
@ -147,12 +139,7 @@ main(int argc, char *argv[])
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;
@ -348,33 +335,18 @@ main(int argc, char *argv[])
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;
@ -419,7 +391,6 @@ main(int argc, char *argv[])
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));
}
@ -428,160 +399,6 @@ main(int argc, char *argv[])
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[])
{
@ -654,182 +471,6 @@ 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)
{
@ -839,71 +480,22 @@ 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));
@ -953,9 +545,9 @@ loop:
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'])
@ -1256,43 +848,6 @@ 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;
}
Prog*
prg(void)
{
@ -1477,189 +1032,3 @@ doprof2(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);
}

1
src/cmd/6l/pass.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
// see ../../runtime/proc.c:/StackGuard
enum

1
src/cmd/6l/span.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
static int rexflag;
static int asmode;

7
src/cmd/8l/Makefile
View File

@ -9,9 +9,9 @@ TARG=\
OFILES=\
asm.$O\
compat.$O\
elf.$O\
enam.$O\
lib.$O\
list.$O\
macho.$O\
obj.$O\
@ -41,6 +41,5 @@ clean:
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

8
src/cmd/8l/asm.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
#include "../ld/elf.h"
#include "../ld/macho.h"
@ -414,18 +415,13 @@ asmb(void)
{
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());

6
src/cmd/8l/elf.c
View File

@ -1,6 +0,0 @@
// 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"

10
src/cmd/8l/go.c
View File

@ -1,10 +0,0 @@
// 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"

46
src/cmd/8l/l.h
View File

@ -37,6 +37,11 @@
#define EXTERN extern
#endif
enum
{
PtrSize = 4
};
#define P ((Prog*)0)
#define S ((Sym*)0)
#define TNAME (curtext?curtext->from.sym->name:noname)
@ -116,7 +121,6 @@ struct Sym
uchar subtype;
uchar dupok;
uchar reachable;
ushort file;
int32 value;
int32 size;
int32 sig;
@ -124,6 +128,7 @@ struct Sym
Prog* text;
Prog* data;
Sym* gotype;
char* file;
char* dynldname;
char* dynldlib;
};
@ -265,7 +270,6 @@ EXTERN int32 casepc;
EXTERN int cbc;
EXTERN char* cbp;
EXTERN char* pcstr;
EXTERN int cout;
EXTERN Auto* curauto;
EXTERN Auto* curhist;
EXTERN Prog* curp;
@ -278,19 +282,7 @@ EXTERN char debug[128];
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];
@ -299,20 +291,16 @@ EXTERN Prog* lastp;
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;
@ -357,18 +345,9 @@ void doprof2(void);
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);
@ -380,19 +359,15 @@ void mkfwd(void);
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);
@ -400,9 +375,7 @@ void wputl(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);
@ -416,13 +389,6 @@ vlong adduintxx(Sym *s, uint64 v, int wid);
* 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)

1
src/cmd/8l/list.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
void
listinit(void)

6
src/cmd/8l/macho.c
View File

@ -1,6 +0,0 @@
// 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"

649
src/cmd/8l/obj.c
View File

@ -30,6 +30,7 @@
#define EXTERN
#include "l.h"
#include "../ld/lib.h"
#include "../ld/elf.h"
#include "../ld/macho.h"
#include <ar.h>
@ -39,11 +40,8 @@
#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
@ -86,7 +84,6 @@ void
main(int argc, char *argv[])
{
int i, c;
char *a;
Binit(&bso, 1, OWRITE);
cout = -1;
@ -99,7 +96,6 @@ main(int argc, char *argv[])
INITDAT = -1;
INITRND = -1;
INITENTRY = 0;
libdir[nlibdir++] = "."; // look in dot first
ARGBEGIN {
default:
@ -117,11 +113,7 @@ main(int argc, char *argv[])
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()));
@ -149,12 +141,7 @@ main(int argc, char *argv[])
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;
@ -346,33 +333,18 @@ main(int argc, char *argv[])
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;
@ -412,7 +384,6 @@ main(int argc, char *argv[])
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));
}
@ -421,161 +392,6 @@ main(int argc, char *argv[])
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[])
{
@ -651,182 +467,6 @@ 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)
{
@ -836,72 +476,23 @@ 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));
@ -950,9 +541,9 @@ loop:
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'])
@ -1223,40 +814,6 @@ 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(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)
{
@ -1438,185 +995,3 @@ doprof2(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);
}

1
src/cmd/8l/pass.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
// see ../../pkg/runtime/proc.c:/StackGuard
enum

1
src/cmd/8l/span.c
View File

@ -29,6 +29,7 @@
// THE SOFTWARE.
#include "l.h"
#include "../ld/lib.h"
void
span(void)

2
src/cmd/ld/elf.c
View File

@ -2,6 +2,8 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "l.h"
#include "lib.h"
#include "../ld/elf.h"
/*

3
src/cmd/ld/go.c
View File

@ -4,6 +4,9 @@
// 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.

761
src/cmd/ld/lib.c Normal file
View File

@ -0,0 +1,761 @@
// 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;
}

87
src/cmd/ld/lib.h Normal file
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@ -0,0 +1,87 @@
// 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;

2
src/cmd/ld/macho.c
View File

@ -5,6 +5,8 @@
// 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;