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Check asm instruction operand count

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This commit is contained in:
gingerBill
2026-08-11 11:11:53 +01:00
parent 70ca5c0936
commit 5ca7638bb2
3 changed files with 77 additions and 30 deletions
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17
src/asm_tables_amd64.cpp
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@@ -229,8 +229,8 @@ struct Asm_amd64 {
EncodingFlags flags;
bool has_implicit () const { return ((flags>>21u)&1) != 0; }
u8 explicit_count() const { return cast(u8)((flags>>18u)&((1u<<18)-1)); }
u8 op_count () const { return cast(u8)((flags>>22u)&((1u<<22)-1)); }
u8 explicit_count() const { return cast(u8)((flags>>18u)&((1u<<3)-1)); }
u8 op_count () const { return cast(u8)((flags>>22u)&((1u<<3)-1)); }
};
#pragma pack(pop)
GB_STATIC_ASSERT(gb_size_of(Encoding) == 16);
@@ -248,8 +248,6 @@ struct Asm_amd64 {
StringMap<Mnemonic> mnemonic_map;
StringMap<Prefix> prefix_map;
StringMap<Register> register_map;
Slice<EncodeRun> ENCODE_RUNS;
Slice<Encoding> ENCODE_FORMS;
bool init() {
string_map_init(&mnemonic_map, MNEMONIC_COUNT*2);
for (u16 m = M_INVALID+1; m < MNEMONIC_COUNT; m++) {
@@ -277,12 +275,13 @@ struct Asm_amd64 {
Register *found = string_map_get(&register_map, name);
return found ? *found : REG_INVALID;
}
Slice<Encoding> encoding_forms(Mnemonic m) const {
EncodeRun r = ENCODE_RUNS[m];
return slice_lower_and_count(ENCODE_FORMS, r.start, r.count);
Slice<Encoding> encoding_forms(/*Mnemonic*/ u16 m) const {
EncodeRun r = raw_encode_runs[m];
Encoding *ENCODE_FORMS = cast(Encoding *)raw_encode_forms;
return Slice<Encoding>{ENCODE_FORMS+r.start, r.count};
}
u16 reg_class(Register r) const {
return 0xFF00 & cast(u16)r;
u16 reg_class(/*Register*/ u16 r) const {
return 0xFF00 & r;
}
// size in bits for register
u16 reg_size(Register r) const {