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outobj: properly error on unsupported relocations

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Error out on any relocations not supported by the backend.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin 2010-05-06 17:52:57 -07:00
parent bce369022a
commit 931ce775cf
1 changed files with 38 additions and 12 deletions
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50
output/outobj.c
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@ -1060,7 +1060,8 @@ static void obj_out(int32_t segto, const void *data,
orp = seg->orp;
orp->parm[0] = seg->currentpos;
if (type == OUT_RAWDATA) {
switch (type) {
case OUT_RAWDATA:
ucdata = data;
while (size > 0) {
unsigned int len;
@ -1074,8 +1075,14 @@ static void obj_out(int32_t segto, const void *data,
ucdata += len;
size -= len;
}
} else if (type == OUT_ADDRESS || type == OUT_REL2ADR ||
type == OUT_REL4ADR) {
break;
case OUT_ADDRESS:
case OUT_REL1ADR:
case OUT_REL2ADR:
case OUT_REL4ADR:
case OUT_REL8ADR:
{
int rsize;
if (segment == NO_SEG && type != OUT_ADDRESS)
@ -1084,18 +1091,28 @@ static void obj_out(int32_t segto, const void *data,
if (segment >= SEG_ABS)
nasm_error(ERR_NONFATAL, "far-absolute relocations not supported"
" by OBJ format");
ldata = *(int64_t *)data;
if (type == OUT_REL2ADR) {
ldata += (size - 2);
size = 2;
} else if (type == OUT_REL4ADR) {
ldata += (size - 4);
size = 4;
if (type != OUT_ADDRESS) {
ldata += size;
size = realsize(type, size);
ldata -= size;
}
if (size == 2)
switch (size) {
default:
nasm_error(ERR_NONFATAL, "OBJ format can only handle 16- or "
"32-byte relocations");
segment = NO_SEG; /* Don't actually generate a relocation */
break;
case 2:
orp = obj_word(orp, ldata);
else
break;
case 4:
orp = obj_dword(orp, ldata);
break;
}
rsize = size;
if (segment < SEG_ABS && (segment != NO_SEG && segment % 2) &&
size == 4) {
@ -1116,10 +1133,19 @@ static void obj_out(int32_t segto, const void *data,
(type == OUT_ADDRESS ? 0x4000 : 0),
segment, wrt, seg);
seg->currentpos += size;
} else if (type == OUT_RESERVE) {
break;
}
default:
nasm_error(ERR_NONFATAL,
"Relocation type not supported by output format");
/* fall through */
case OUT_RESERVE:
if (orp->committed)
orp = obj_bump(orp);
seg->currentpos += size;
break;
}
obj_commit(orp);
}