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ld: share asmlc

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R=ken2
CC=golang-dev
https://golang.org/cl/2373043
This commit is contained in:
Russ Cox 2010-10-06 09:52:54 -04:00
parent 8d130f5d2d
commit 30edda690f
6 changed files with 84 additions and 243 deletions
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82
src/cmd/5l/asm.c
View File

@ -1126,88 +1126,6 @@ putsymb(char *s, int t, int32 v, int ver)
}
}
#define MINLC 4
void
asmlc(void)
{
int32 oldpc, oldlc;
Prog *p;
int32 v, s;
oldpc = INITTEXT;
oldlc = 0;
for(p = firstp; p != P; p = p->link) {
setarch(p);
if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) {
if(p->as == ATEXT)
curtext = p;
if(debug['L'])
Bprint(&bso, "%6lux %P\n",
p->pc, p);
continue;
}
if(debug['L'])
Bprint(&bso, "\t\t%6ld", lcsize);
v = (p->pc - oldpc) / MINLC;
while(v) {
s = 127;
if(v < 127)
s = v;
cput(s+128); /* 129-255 +pc */
if(debug['L'])
Bprint(&bso, " pc+%ld*%d(%ld)", s, MINLC, s+128);
v -= s;
lcsize++;
}
s = p->line - oldlc;
oldlc = p->line;
oldpc = p->pc + MINLC;
if(s > 64 || s < -64) {
cput(0); /* 0 vv +lc */
cput(s>>24);
cput(s>>16);
cput(s>>8);
cput(s);
if(debug['L']) {
if(s > 0)
Bprint(&bso, " lc+%ld(%d,%ld)\n",
s, 0, s);
else
Bprint(&bso, " lc%ld(%d,%ld)\n",
s, 0, s);
Bprint(&bso, "%6lux %P\n",
p->pc, p);
}
lcsize += 5;
continue;
}
if(s > 0) {
cput(0+s); /* 1-64 +lc */
if(debug['L']) {
Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s);
Bprint(&bso, "%6lux %P\n",
p->pc, p);
}
} else {
cput(64-s); /* 65-128 -lc */
if(debug['L']) {
Bprint(&bso, " lc%ld(%ld)\n", s, 64-s);
Bprint(&bso, "%6lux %P\n",
p->pc, p);
}
}
lcsize++;
}
while(lcsize & 1) {
s = 129;
cput(s);
lcsize++;
}
if(debug['v'] || debug['L'])
Bprint(&bso, "lcsize = %ld\n", lcsize);
Bflush(&bso);
}
static void
outt(int32 f, int32 l)
{

1
src/cmd/5l/l.h
View File

@ -279,6 +279,7 @@ enum
NENT = 100,
MAXIO = 8192,
MAXHIST = 20, /* limit of path elements for history symbols */
MINLC = 4,
Roffset = 22, /* no. bits for offset in relocation address */
Rindex = 10, /* no. bits for index in relocation address */

80
src/cmd/6l/span.c
View File

@ -407,86 +407,6 @@ asmelfsym(void)
genasmsym(putelfsymb);
}
void
asmlc(void)
{
vlong oldpc;
Prog *p;
int32 oldlc, v, s;
oldpc = INITTEXT;
oldlc = 0;
for(p = firstp; p != P; p = p->link) {
if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) {
if(p->as == ATEXT)
curtext = p;
if(debug['O'])
Bprint(&bso, "%6llux %P\n",
p->pc, p);
continue;
}
if(debug['O'])
Bprint(&bso, "\t\t%6ld", lcsize);
v = (p->pc - oldpc) / MINLC;
while(v) {
s = 127;
if(v < 127)
s = v;
cput(s+128); /* 129-255 +pc */
if(debug['O'])
Bprint(&bso, " pc+%ld*%d(%ld)", s, MINLC, s+128);
v -= s;
lcsize++;
}
s = p->line - oldlc;
oldlc = p->line;
oldpc = p->pc + MINLC;
if(s > 64 || s < -64) {
cput(0); /* 0 vv +lc */
cput(s>>24);
cput(s>>16);
cput(s>>8);
cput(s);
if(debug['O']) {
if(s > 0)
Bprint(&bso, " lc+%ld(%d,%ld)\n",
s, 0, s);
else
Bprint(&bso, " lc%ld(%d,%ld)\n",
s, 0, s);
Bprint(&bso, "%6llux %P\n",
p->pc, p);
}
lcsize += 5;
continue;
}
if(s > 0) {
cput(0+s); /* 1-64 +lc */
if(debug['O']) {
Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s);
Bprint(&bso, "%6llux %P\n",
p->pc, p);
}
} else {
cput(64-s); /* 65-128 -lc */
if(debug['O']) {
Bprint(&bso, " lc%ld(%ld)\n", s, 64-s);
Bprint(&bso, "%6llux %P\n",
p->pc, p);
}
}
lcsize++;
}
while(lcsize & 1) {
s = 129;
cput(s);
lcsize++;
}
if(debug['v'] || debug['O'])
Bprint(&bso, "lcsize = %ld\n", lcsize);
Bflush(&bso);
}
int
prefixof(Adr *a)
{

80
src/cmd/8l/span.c
View File

@ -334,86 +334,6 @@ asmsym(void)
Bflush(&bso);
}
void
asmlc(void)
{
int32 oldpc, oldlc;
Prog *p;
int32 v, s;
oldpc = INITTEXT;
oldlc = 0;
for(p = firstp; p != P; p = p->link) {
if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) {
if(p->as == ATEXT)
curtext = p;
if(debug['L'])
Bprint(&bso, "%6lux %P\n",
p->pc, p);
continue;
}
if(debug['L'])
Bprint(&bso, "\t\t%6ld", lcsize);
v = (p->pc - oldpc) / MINLC;
while(v) {
s = 127;
if(v < 127)
s = v;
cput(s+128); /* 129-255 +pc */
if(debug['L'])
Bprint(&bso, " pc+%ld*%d(%ld)", s, MINLC, s+128);
v -= s;
lcsize++;
}
s = p->line - oldlc;
oldlc = p->line;
oldpc = p->pc + MINLC;
if(s > 64 || s < -64) {
cput(0); /* 0 vv +lc */
cput(s>>24);
cput(s>>16);
cput(s>>8);
cput(s);
if(debug['L']) {
if(s > 0)
Bprint(&bso, " lc+%ld(%d,%ld)\n",
s, 0, s);
else
Bprint(&bso, " lc%ld(%d,%ld)\n",
s, 0, s);
Bprint(&bso, "%6lux %P\n",
p->pc, p);
}
lcsize += 5;
continue;
}
if(s > 0) {
cput(0+s); /* 1-64 +lc */
if(debug['L']) {
Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s);
Bprint(&bso, "%6lux %P\n",
p->pc, p);
}
} else {
cput(64-s); /* 65-128 -lc */
if(debug['L']) {
Bprint(&bso, " lc%ld(%ld)\n", s, 64-s);
Bprint(&bso, "%6lux %P\n",
p->pc, p);
}
}
lcsize++;
}
while(lcsize & 1) {
s = 129;
cput(s);
lcsize++;
}
if(debug['v'] || debug['L'])
Bprint(&bso, "lcsize = %ld\n", lcsize);
Bflush(&bso);
}
int
prefixof(Adr *a)
{

83
src/cmd/ld/lib.c
View File

@ -1,5 +1,6 @@
// Derived from Inferno utils/6l/obj.c
// Derived from Inferno utils/6l/obj.c and utils/6l/span.c
// http://code.google.com/p/inferno-os/source/browse/utils/6l/obj.c
// http://code.google.com/p/inferno-os/source/browse/utils/6l/span.c
//
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
@ -933,3 +934,83 @@ ewrite(int fd, void *buf, int n)
errorexit();
}
}
void
asmlc(void)
{
vlong oldpc;
Prog *p;
int32 oldlc, v, s;
oldpc = INITTEXT;
oldlc = 0;
for(p = firstp; p != P; p = p->link) {
if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) {
if(p->as == ATEXT)
curtext = p;
if(debug['O'])
Bprint(&bso, "%6llux %P\n",
p->pc, p);
continue;
}
if(debug['O'])
Bprint(&bso, "\t\t%6ld", lcsize);
v = (p->pc - oldpc) / MINLC;
while(v) {
s = 127;
if(v < 127)
s = v;
cput(s+128); /* 129-255 +pc */
if(debug['O'])
Bprint(&bso, " pc+%ld*%d(%ld)", s, MINLC, s+128);
v -= s;
lcsize++;
}
s = p->line - oldlc;
oldlc = p->line;
oldpc = p->pc + MINLC;
if(s > 64 || s < -64) {
cput(0); /* 0 vv +lc */
cput(s>>24);
cput(s>>16);
cput(s>>8);
cput(s);
if(debug['O']) {
if(s > 0)
Bprint(&bso, " lc+%ld(%d,%ld)\n",
s, 0, s);
else
Bprint(&bso, " lc%ld(%d,%ld)\n",
s, 0, s);
Bprint(&bso, "%6llux %P\n",
p->pc, p);
}
lcsize += 5;
continue;
}
if(s > 0) {
cput(0+s); /* 1-64 +lc */
if(debug['O']) {
Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s);
Bprint(&bso, "%6llux %P\n",
p->pc, p);
}
} else {
cput(64-s); /* 65-128 -lc */
if(debug['O']) {
Bprint(&bso, " lc%ld(%ld)\n", s, 64-s);
Bprint(&bso, "%6llux %P\n",
p->pc, p);
}
}
lcsize++;
}
while(lcsize & 1) {
s = 129;
cput(s);
lcsize++;
}
if(debug['v'] || debug['O'])
Bprint(&bso, "lcsize = %ld\n", lcsize);
Bflush(&bso);
}

1
src/cmd/ld/lib.h
View File

@ -103,6 +103,7 @@ void addlibpath(char *srcref, char *objref, char *file, char *pkg);
Section* addsection(Segment*, char*, int);
void copyhistfrog(char *buf, int nbuf);
void addhist(int32 line, int type);
void asmlc(void);
void histtoauto(void);
void collapsefrog(Sym *s);
Sym* lookup(char *symb, int v);