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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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13
third_party/chibicc/as.c vendored
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@ -2356,6 +2356,14 @@ static void OnTest(struct As *a, struct Slice s) {
}
}
static void OnCmpxchg(struct As *a, struct Slice s) {
int reg, modrm, disp;
reg = GetRegisterReg(a);
ConsumeComma(a);
modrm = ParseModrm(a, &disp);
EmitRexOpModrm(a, 0x0FB0, reg, modrm, disp, 1);
}
static void OnImul(struct As *a, struct Slice s) {
int reg, modrm, imm, disp;
if (IsPunct(a, a->i, '$')) {
@ -3074,6 +3082,7 @@ static void OnSeto(struct As *a, struct Slice s) { OpSetcc(a, 0); }
static void OnSetp(struct As *a, struct Slice s) { OpSetcc(a, 10); }
static void OnSets(struct As *a, struct Slice s) { OpSetcc(a, 8); }
static void OnSetz(struct As *a, struct Slice s) { OpSetcc(a, 4); }
static void OnSfence(struct As *a, struct Slice s) { EmitVarword(a, 0x0faef8); }
static void OnShl(struct As *a, struct Slice s) { OpBsu(a, s, 4); }
static void OnShr(struct As *a, struct Slice s) { OpBsu(a, s, 5); }
static void OnShufpd(struct As *a, struct Slice s) { OpSseIb(a, 0x660FC6); }
@ -3094,6 +3103,7 @@ static void OnSubpd(struct As *a, struct Slice s) { OpSse(a, 0x660F5C); }
static void OnSubps(struct As *a, struct Slice s) { OpSse(a, 0x0F5C); }
static void OnSubsd(struct As *a, struct Slice s) { OpSse(a, 0xF20F5C); }
static void OnSubss(struct As *a, struct Slice s) { OpSse(a, 0xF30F5C); }
static void OnSyscall(struct As *a, struct Slice s) { EmitVarword(a, 0x0F05); }
static void OnUcomisd(struct As *a, struct Slice s) { OpSse(a, 0x660F2E); }
static void OnUcomiss(struct As *a, struct Slice s) { OpSse(a, 0x0F2E); }
static void OnUd2(struct As *a, struct Slice s) { EmitVarword(a, 0x0F0B); }
@ -3229,6 +3239,7 @@ static const struct Directive8 {
{"cmpsd", OnCmpsd}, //
{"cmpss", OnCmpss}, //
{"cmpw", OnCmp}, //
{"cmpxchg", OnCmpxchg}, //
{"comisd", OnComisd}, //
{"comiss", OnComiss}, //
{"cqo", OnCqto}, //
@ -3604,6 +3615,7 @@ static const struct Directive8 {
{"setpo", OnSetnp}, //
{"sets", OnSets}, //
{"setz", OnSetz}, //
{"sfence", OnSfence}, //
{"shl", OnShl}, //
{"shlb", OnShl}, //
{"shld", OnShld}, //
@ -3638,6 +3650,7 @@ static const struct Directive8 {
{"subsd", OnSubsd}, //
{"subss", OnSubss}, //
{"subw", OnSub}, //
{"syscall", OnSyscall}, //
{"test", OnTest}, //
{"testb", OnTest}, //
{"testl", OnTest}, //