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cmd/ld: fix check for address wrap in relocation

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PC-relative needs a signed offset; others need unsigned.
Also fix signedness of 32-bit relocation on Windows.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/9039045
This commit is contained in:
Rob Pike 2013-04-30 09:10:10 -07:00
parent e2b2e0d8d1
commit 700a126c64
2 changed files with 2 additions and 3 deletions
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3
src/cmd/ld/data.c
View File

@ -259,8 +259,7 @@ relocsym(Sym *s)
cursym = s;
diag("bad reloc size %#ux for %s", siz, r->sym->name);
case 4:
// TODO: Test is causing breakages on ARM and Windows. Disable for now.
if(0 && o != (int32)o) {
if((r->type == D_PCREL && o != (int32)o) || (r->type != D_PCREL && o != (uint32)o)) {
cursym = S;
diag("relocation address is too big: %#llx", o);
}

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

@ -291,7 +291,7 @@ ldpe(Biobuf *f, char *pkg, int64 len, char *pn)
case IMAGE_REL_AMD64_ADDR32: // R_X86_64_PC32
case IMAGE_REL_AMD64_ADDR32NB:
rp->type = D_PCREL;
rp->add = le32(rsect->base+rp->off);
rp->add = (int32)le32(rsect->base+rp->off);
break;
case IMAGE_REL_I386_DIR32NB:
case IMAGE_REL_I386_DIR32: