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Accept that IN and OUT are going to have special semantics, thereby kill ::AX and ::DX.

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This commit is contained in:
Thomas Harte 2022-02-20 17:15:01 -05:00
parent 4d2e8cd71d
commit a5113998e2
3 changed files with 9 additions and 13 deletions
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8
InstructionSets/x86/Decoder.cpp
View File

@ -349,10 +349,10 @@ std::pair<int, InstructionSet::x86::Instruction> Decoder::decode(const uint8_t *
case 0xea: Far(JMPF); break;
case 0xeb: Jump(JMPN); break;
case 0xec: Complete(IN, DX, eAX, 1); break;
case 0xed: Complete(IN, DX, AX, 1); break;
case 0xee: Complete(OUT, eAX, DX, 1); break;
case 0xef: Complete(OUT, AX, DX, 2); break;
case 0xec: Complete(IN, eDX, eAX, 1); break;
case 0xed: Complete(IN, eDX, eAX, 1); break;
case 0xee: Complete(OUT, eAX, eDX, 1); break;
case 0xef: Complete(OUT, eAX, eDX, 2); break;
case 0xf0: lock_ = true; break;
case 0xf2: repetition_ = Repetition::RepNE; break;

4
InstructionSets/x86/Instruction.hpp
View File

@ -335,10 +335,6 @@ enum class Source: uint8_t {
CL,
AH, BH, CH, DH,
// TODO: can these all be eliminated in favour of eAX,2, etc?
AX,
DX,
// TODO: compact and replace with a reference to a SIB.
IndBXPlusSI,
IndBXPlusDI,

10
OSBindings/Mac/Clock SignalTests/x86DecoderTests.mm
View File

@ -177,7 +177,7 @@ namespace {
// jo 0x00000037
// xchg %ax,%sp
[self assert:instructions[8] operation:Operation::DEC size:2 source:Source::eSI destination:Source::eSI];
[self assert:instructions[9] operation:Operation::OUT size:2 source:Source::AX destination:Source::DX];
[self assert:instructions[9] operation:Operation::OUT size:2 source:Source::eAX destination:Source::eDX];
[self assert:instructions[10] operation:Operation::JO displacement:0x20];
[self assert:instructions[11] operation:Operation::XCHG size:2 source:Source::eAX destination:Source::eSP];
@ -209,7 +209,7 @@ namespace {
// jge 0xffffffe0
[self assert:instructions[18] operation:Operation::SBB size:2 source:Source::eBX destination:Source::IndBPPlusSI displacement:0x16];
[self assert:instructions[19] operation:Operation::XOR size:2 source:Source::eSP destination:Source::IndSI displacement:0x2c];
[self assert:instructions[20] operation:Operation::OUT size:2 source:Source::AX destination:Source::DirectAddress operand:0xc6];
[self assert:instructions[20] operation:Operation::OUT size:2 source:Source::eAX destination:Source::DirectAddress operand:0xc6];
[self assert:instructions[21] operation:Operation::JNL displacement:0xffb0];
// mov $0x49,%ch
@ -229,7 +229,7 @@ namespace {
[self assert:instructions[26] operation:Operation::PUSH size:2 source:Source::eAX];
[self assert:instructions[27] operation:Operation::JS displacement:0x3d];
[self assert:instructions[28] operation:Operation::ADD size:2 source:Source::IndDI destination:Source::eBX];
[self assert:instructions[29] operation:Operation::IN size:2 source:Source::DirectAddress destination:Source::AX operand:0xc9];
[self assert:instructions[29] operation:Operation::IN size:2 source:Source::DirectAddress destination:Source::eAX operand:0xc9];
// xchg %ax,%di
// ret
@ -238,7 +238,7 @@ namespace {
[self assert:instructions[30] operation:Operation::XCHG size:2 source:Source::eAX destination:Source::eDI];
[self assert:instructions[31] operation:Operation::RETN];
[self assert:instructions[32] operation:Operation::WAIT];
[self assert:instructions[33] operation:Operation::OUT size:1 source:Source::AL destination:Source::DirectAddress operand:0xd3];
[self assert:instructions[33] operation:Operation::OUT size:1 source:Source::eAX destination:Source::DirectAddress operand:0xd3];
// [[ omitted: insb (%dx),%es:(%di) ]]
// pop %ax
@ -294,7 +294,7 @@ namespace {
[self assert:instructions[54] operation:Operation::MOV size:2 operand:0xea56 destination:Source::eDI];
[self assert:instructions[55] operation:Operation::DEC size:2 source:Source::eSI destination:Source::eSI];
[self assert:instructions[56] operation:Operation::STD];
[self assert:instructions[57] operation:Operation::IN size:1 source:Source::DirectAddress destination:Source::AL operand:0x5a];
[self assert:instructions[57] operation:Operation::IN size:1 source:Source::DirectAddress destination:Source::eAX operand:0x5a];
// and 0x5b2c(%bp,%si),%bp
// sub %dl,%dl