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| author | Kartik Agaram <vc@akkartik.com> | 2018-12-03 23:26:56 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-12-03 23:26:56 -0800 |
| commit | 5f3b3e7aea4174f13da9b430538564c68257b647 (patch) | |
| tree | 64b0ca70a7508aa10a008ad7d996f5d4f38214c8 /subx/031check_operands.cc | |
| parent | ee73f5eb31e9dd5a185da097bd990ac94c3d282b (diff) | |
| download | mu-5f3b3e7aea4174f13da9b430538564c68257b647.tar.gz | |
4830
New helper: printing a byte in textual (hex) form. This required adding instructions for bitwise shift operations.
Diffstat (limited to 'subx/031check_operands.cc')
| -rw-r--r-- | subx/031check_operands.cc | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/subx/031check_operands.cc b/subx/031check_operands.cc index f59fb005..949bc533 100644 --- a/subx/031check_operands.cc +++ b/subx/031check_operands.cc @@ -212,18 +212,24 @@ void init_permitted_operands() { // pop put(Permitted_operands, "8f", 0x01); - //// Class O: op, ModR/M and subop (not r32) + //// Class N: op, ModR/M and subop (not r32) // imm32 imm8 disp32 |disp16 disp8 subop modrm // 0 0 0 |0 0 1 1 + put(Permitted_operands, "d3", 0x03); // shift put(Permitted_operands, "f7", 0x03); // test/not/mul/div put(Permitted_operands, "ff", 0x03); // jump/push/call - //// Class N: op, ModR/M and imm32 + //// Class O: op, ModR/M, subop (not r32) and imm8 + // imm32 imm8 disp32 |disp16 disp8 subop modrm + // 0 1 0 |0 0 1 1 + put(Permitted_operands, "c1", 0x23); // combine + + //// Class P: op, ModR/M and imm32 // imm32 imm8 disp32 |disp16 disp8 subop modrm // 1 0 0 |0 0 0 1 put(Permitted_operands, "c7", 0x41); // copy - //// Class P: op, ModR/M, subop (not r32) and imm32 + //// Class Q: op, ModR/M, subop (not r32) and imm32 // imm32 imm8 disp32 |disp16 disp8 subop modrm // 1 0 0 |0 0 1 1 put(Permitted_operands, "81", 0x43); // combine |