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cmd/5l,6l,8l: remove bogus dynsym section indexes

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Previously, this code generated bogus section indexes for dynamic
symbols.  It turns out this didn't matter, since we only emit these
when generating an executable and in an executable it only matters
whether a symbol is defined or undefined, but it leads to perplexing
code full of mysterious constants.

Unfortunately, this happens too early to put in real section indexes,
so just use section index 1 to distinguish the symbol from an
undefined symbol.

Change-Id: I0e514604bf31f21683598ebd3e020b66acf767ef
Reviewed-on: https://go-review.googlesource.com/1720
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Austin Clements 2014-12-16 15:59:05 -05:00
parent 326ceeabc4
commit 7e424ecdc1
3 changed files with 6 additions and 54 deletions
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20
src/cmd/5l/asm.c
View File

@ -510,24 +510,8 @@ adddynsym(Link *ctxt, LSym *s)
/* shndx */
if(s->type == SDYNIMPORT)
adduint16(ctxt, d, SHN_UNDEF);
else {
switch(s->type) {
default:
case STEXT:
t = 11;
break;
case SRODATA:
t = 12;
break;
case SDATA:
t = 13;
break;
case SBSS:
t = 14;
break;
}
adduint16(ctxt, d, t);
}
else
adduint16(ctxt, d, 1);
} else {
diag("adddynsym: unsupported binary format");
}

20
src/cmd/6l/asm.c
View File

@ -548,24 +548,8 @@ adddynsym(Link *ctxt, LSym *s)
/* section where symbol is defined */
if(s->type == SDYNIMPORT)
adduint16(ctxt, d, SHN_UNDEF);
else {
switch(s->type) {
default:
case STEXT:
t = 11;
break;
case SRODATA:
t = 12;
break;
case SDATA:
t = 13;
break;
case SBSS:
t = 14;
break;
}
adduint16(ctxt, d, t);
}
else
adduint16(ctxt, d, 1);
/* value */
if(s->type == SDYNIMPORT)

20
src/cmd/8l/asm.c
View File

@ -516,24 +516,8 @@ adddynsym(Link *ctxt, LSym *s)
/* shndx */
if(s->type == SDYNIMPORT)
adduint16(ctxt, d, SHN_UNDEF);
else {
switch(s->type) {
default:
case STEXT:
t = 11;
break;
case SRODATA:
t = 12;
break;
case SDATA:
t = 13;
break;
case SBSS:
t = 14;
break;
}
adduint16(ctxt, d, t);
}
else
adduint16(ctxt, d, 1);
} else if(HEADTYPE == Hdarwin) {
diag("adddynsym: missed symbol %s (%s)", s->name, s->extname);
} else if(HEADTYPE == Hwindows) {