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Add atomics to chibicc

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This change also fixes #434 and makes the chibicc assembler better.
This commit is contained in:
Justine Tunney 2022-06-20 03:08:00 -07:00
parent 5ddf43332e
commit a988896048
21 changed files with 650 additions and 445 deletions
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21
third_party/chibicc/test/asm_test.c vendored
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@ -83,6 +83,24 @@ void testFlagOutputs(void) {
ASSERT(false, sf);
}
void testAugmentLoByte_onlyModifiesLowerBits(void) {
int x, y;
x = 0x01020304;
y = 0x00000005;
asm("sub\t%b1,%b0" : "+q"(x) : "q"(y));
ASSERT(0x010203ff, x);
ASSERT(0x00000005, y);
}
void testAugmentHiByte_onlyModifiesHigherBits(void) {
int x, y;
x = 0x01020304;
y = 0x00000400;
asm("sub\t%h1,%h0" : "+Q"(x) : "Q"(y));
ASSERT(0x0102ff04, x);
ASSERT(0x00000400, y);
}
int main() {
ASSERT(50, asm_fn1());
ASSERT(55, asm_fn2());
@ -135,5 +153,8 @@ int main() {
ASSERT(1, !strcmp(p, "hello"));
}
testAugmentLoByte_onlyModifiesLowerBits();
testAugmentHiByte_onlyModifiesHigherBits();
return 0;
}