ExternalVendorCode/corda
1
0
Fork 0
mirror of https://github.com/corda/corda.git synced 2025-01-08 14:03:06 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

support 64-bit operands on 32-bit systems in compareCR

Browse Source
This commit is contained in:
Joel Dice 2008-04-29 08:57:24 -06:00
parent a07a189ddb
commit 7791b1df80
1 changed files with 35 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/x86.cpp
View File

@ -1563,10 +1563,27 @@ void
compareCR(Context* c, unsigned size UNUSED, Assembler::Constant* a,
Assembler::Register* b)
{
assert(c, BytesPerWord == 8 or size == 4);
int64_t v = a->value->value();
if (BytesPerWord == 4 and size == 8) {
ResolvedPromise low(v & 0xFFFFFFFF);
Assembler::Constant al(&low);
ResolvedPromise high((v >> 32) & 0xFFFFFFFF);
Assembler::Constant ah(&high);
Assembler::Register bh(b->high);
compareCR(c, 4, &ah, &bh);
// if the high order bits are equal, we compare the low order
// bits; otherwise, we jump past that comparison
c->code.append(0x0f);
c->code.append(0x85); // jne
c->code.append4(2);
compareCR(c, 4, &al, b);
} else {
if (isInt32(v)) {
if (size == 8) rex(c);
if (isInt8(v)) {
@ -1585,6 +1602,7 @@ compareCR(Context* c, unsigned size UNUSED, Assembler::Constant* a,
c->client->releaseTemporary(tmp.low);
}
}
}
void
compareCM(Context* c, unsigned size, Assembler::Constant* a,