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Switch to templated test function.

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Thomas Harte 2022-02-23 04:33:28 -05:00
parent 95976d8b58
commit dc37b692cf
1 changed files with 123 additions and 145 deletions
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258
OSBindings/Mac/Clock SignalTests/x86DecoderTests.mm
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@ -9,93 +9,55 @@
#import <XCTest/XCTest.h> #import <XCTest/XCTest.h>
#include <initializer_list> #include <initializer_list>
#include <optional>
#include <vector> #include <vector>
#include "../../../InstructionSets/x86/Decoder.hpp" #include "../../../InstructionSets/x86/Decoder.hpp"
namespace { namespace {
using Operation = InstructionSet::x86::Operation; using Operation = InstructionSet::x86::Operation;
using Instruction = InstructionSet::x86::Instruction<false>; using Instruction = InstructionSet::x86::Instruction<false>;
using Model = InstructionSet::x86::Model;
using Source = InstructionSet::x86::Source; using Source = InstructionSet::x86::Source;
using Size = InstructionSet::x86::Size; using Size = InstructionSet::x86::Size;
using ScaleIndexBase = InstructionSet::x86::ScaleIndexBase; using ScaleIndexBase = InstructionSet::x86::ScaleIndexBase;
using SourceSIB = InstructionSet::x86::SourceSIB; using SourceSIB = InstructionSet::x86::SourceSIB;
}
@interface x86DecoderTests : XCTestCase
@end
/*!
Tests 8086 decoding by throwing a bunch of randomly-generated
word streams and checking that the result matches what I got from a
disassembler elsewhere.
*/
@implementation x86DecoderTests {
std::vector<Instruction> instructions;
}
// MARK: - Specific instruction asserts. // MARK: - Specific instruction asserts.
- (void)assert:(Instruction &)instruction operation:(Operation)operation { template <typename InstructionT> void test(const InstructionT &instruction, int size, Operation operation) {
XCTAssertEqual(instruction.operation_size(), InstructionSet::x86::Size(size));
XCTAssertEqual(instruction.operation, operation); XCTAssertEqual(instruction.operation, operation);
} }
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size { template <typename InstructionT> void test(
XCTAssertEqual(instruction.operation, operation); const InstructionT &instruction,
XCTAssertEqual(instruction.operation_size(), InstructionSet::x86::Size(size)); int size,
} Operation operation,
SourceSIB source,
std::optional<SourceSIB> destination = std::nullopt,
std::optional<typename InstructionT::ImmediateT> operand = std::nullopt,
std::optional<typename InstructionT::DisplacementT> displacement = std::nullopt) {
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size source:(SourceSIB)source destination:(SourceSIB)destination displacement:(int16_t)displacement {
XCTAssertEqual(instruction.operation, operation);
XCTAssertEqual(instruction.operation_size(), InstructionSet::x86::Size(size)); XCTAssertEqual(instruction.operation_size(), InstructionSet::x86::Size(size));
XCTAssertEqual(instruction.operation, operation);
XCTAssert(instruction.source() == source); XCTAssert(instruction.source() == source);
XCTAssert(instruction.destination() == destination); if(destination) XCTAssert(instruction.destination() == *destination);
XCTAssertEqual(instruction.displacement(), displacement); if(operand) XCTAssertEqual(instruction.operand(), *operand);
if(displacement) XCTAssertEqual(instruction.displacement(), *displacement);
} }
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size source:(SourceSIB)source destination:(SourceSIB)destination displacement:(int16_t)displacement operand:(uint16_t)operand { template <typename InstructionT> void test(
[self assert:instruction operation:operation size:size source:source destination:destination displacement:displacement]; const InstructionT &instruction,
XCTAssertEqual(instruction.operand(), operand); Operation operation,
} std::optional<typename InstructionT::ImmediateT> operand = std::nullopt,
std::optional<typename InstructionT::DisplacementT> displacement = std::nullopt) {
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size source:(SourceSIB)source destination:(SourceSIB)destination operand:(uint16_t)operand {
[self assert:instruction operation:operation size:size source:source destination:destination displacement:0 operand:operand];
}
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size source:(SourceSIB)source destination:(SourceSIB)destination {
[self assert:instruction operation:operation size:size source:source destination:destination displacement:0];
}
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size source:(SourceSIB)source {
XCTAssertEqual(instruction.operation, operation); XCTAssertEqual(instruction.operation, operation);
XCTAssertEqual(instruction.operation_size(), InstructionSet::x86::Size(size)); if(operand) XCTAssertEqual(instruction.operand(), *operand);
XCTAssert(instruction.source() == source); if(displacement) XCTAssertEqual(instruction.displacement(), *displacement);
} }
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size destination:(SourceSIB)destination { template <typename InstructionT> void test_far(const InstructionT &instruction, Operation operation, uint16_t segment, uint16_t offset) {
[self assert:instruction operation:operation size:size];
XCTAssert(instruction.destination() == destination);
}
- (void)assert:(Instruction &)instruction operation:(Operation)operation size:(int)size operand:(uint16_t)operand destination:(SourceSIB)destination {
[self assert:instruction operation:operation size:size];
XCTAssert(instruction.destination() == destination);
XCTAssert(instruction.source() == SourceSIB(Source::Immediate));
XCTAssertEqual(instruction.operand(), operand);
XCTAssertEqual(instruction.displacement(), 0);
}
- (void)assert:(Instruction &)instruction operation:(Operation)operation displacement:(int16_t)displacement {
XCTAssertEqual(instruction.operation, operation);
XCTAssertEqual(instruction.displacement(), displacement);
}
- (void)assert:(Instruction &)instruction operation:(Operation)operation operand:(uint16_t)operand {
XCTAssertEqual(instruction.operation, operation);
XCTAssertEqual(instruction.operand(), operand);
XCTAssertEqual(instruction.displacement(), 0);
}
- (void)assert:(Instruction &)instruction operation:(Operation)operation segment:(uint16_t)segment offset:(uint16_t)offset {
XCTAssertEqual(instruction.operation, operation); XCTAssertEqual(instruction.operation, operation);
XCTAssertEqual(instruction.segment(), segment); XCTAssertEqual(instruction.segment(), segment);
XCTAssertEqual(instruction.offset(), offset); XCTAssertEqual(instruction.offset(), offset);
@ -103,9 +65,10 @@ namespace {
// MARK: - Decoder // MARK: - Decoder
- (void)decode:(const std::initializer_list<uint8_t> &)stream { template <Model model> std::vector<typename InstructionSet::x86::Decoder<model>::InstructionT> decode(const std::initializer_list<uint8_t> &stream) {
// Decode by offering up all data at once. // Decode by offering up all data at once.
InstructionSet::x86::Decoder<InstructionSet::x86::Model::i8086> decoder; std::vector<typename InstructionSet::x86::Decoder<model>::InstructionT> instructions;
InstructionSet::x86::Decoder<model> decoder;
instructions.clear(); instructions.clear();
const uint8_t *byte = stream.begin(); const uint8_t *byte = stream.begin();
while(byte != stream.end()) { while(byte != stream.end()) {
@ -117,7 +80,7 @@ namespace {
// Grab a byte-at-a-time decoding and check that it matches the previous. // Grab a byte-at-a-time decoding and check that it matches the previous.
{ {
InstructionSet::x86::Decoder<InstructionSet::x86::Model::i8086> decoder; InstructionSet::x86::Decoder<model> decoder;
auto previous_instruction = instructions.begin(); auto previous_instruction = instructions.begin();
for(auto item: stream) { for(auto item: stream) {
@ -128,9 +91,21 @@ namespace {
} }
} }
} }
return instructions;
} }
// MARK: - Tests }
@interface x86DecoderTests : XCTestCase
@end
/*!
Tests 8086 decoding by throwing a bunch of randomly-generated
word streams and checking that the result matches what I got from a
disassembler elsewhere.
*/
@implementation x86DecoderTests
- (void)testSequence1 { - (void)testSequence1 {
// Sequences the Online Disassembler believes to exist but The 8086 Book does not: // Sequences the Online Disassembler believes to exist but The 8086 Book does not:
@ -141,7 +116,7 @@ namespace {
// 0x6c insb (%dx), %es:(%di) // 0x6c insb (%dx), %es:(%di)
// 0xc9 leave // 0xc9 leave
// //
[self decode:{ const auto instructions = decode<Model::i8086>({
0x2d, 0x77, 0xea, 0x72, 0xfc, 0x4b, 0xb5, 0x28, 0xc3, 0xca, 0x26, 0x48, /* 0x65, 0x6d, */ 0x7b, 0x9f, 0x2d, 0x77, 0xea, 0x72, 0xfc, 0x4b, 0xb5, 0x28, 0xc3, 0xca, 0x26, 0x48, /* 0x65, 0x6d, */ 0x7b, 0x9f,
0xc2, 0x65, 0x42, 0x4e, 0xef, 0x70, 0x20, 0x94, 0xc4, 0xd4, 0x93, 0x43, 0x3c, 0x8e, /* 0x6a, 0x65, */ 0xc2, 0x65, 0x42, 0x4e, 0xef, 0x70, 0x20, 0x94, 0xc4, 0xd4, 0x93, 0x43, 0x3c, 0x8e, /* 0x6a, 0x65, */
0x1a, 0x78, 0x45, 0x10, 0x7f, 0x3c, 0x19, 0x5a, 0x16, 0x31, 0x64, 0x2c, 0xe7, 0xc6, 0x7d, 0xb0, 0x1a, 0x78, 0x45, 0x10, 0x7f, 0x3c, 0x19, 0x5a, 0x16, 0x31, 0x64, 0x2c, 0xe7, 0xc6, 0x7d, 0xb0,
@ -150,7 +125,7 @@ namespace {
0xbd, 0xa1, 0x12, 0xc5, 0x29, /* 0xc9, */ 0x9e, 0xd8, 0xf3, 0xcf, 0x92, 0x39, 0x5d, 0x90, 0x15, 0xc3, 0xbd, 0xa1, 0x12, 0xc5, 0x29, /* 0xc9, */ 0x9e, 0xd8, 0xf3, 0xcf, 0x92, 0x39, 0x5d, 0x90, 0x15, 0xc3,
0xb8, 0xad, 0xe8, 0xc8, 0x16, 0x4a, 0xb0, 0x9e, 0xf9, 0xbf, 0x56, 0xea, 0x4e, 0xfd, 0xe4, 0x5a, 0xb8, 0xad, 0xe8, 0xc8, 0x16, 0x4a, 0xb0, 0x9e, 0xf9, 0xbf, 0x56, 0xea, 0x4e, 0xfd, 0xe4, 0x5a,
0x23, 0xaa, 0x2c, 0x5b, 0x2a, 0xd2, 0xf7, 0x5f, 0x18, 0x86, 0x90, 0x25, 0x64, 0xb7, 0xc3 0x23, 0xaa, 0x2c, 0x5b, 0x2a, 0xd2, 0xf7, 0x5f, 0x18, 0x86, 0x90, 0x25, 0x64, 0xb7, 0xc3
}]; });
// 63 instructions are expected. // 63 instructions are expected.
XCTAssertEqual(instructions.size(), 63); XCTAssertEqual(instructions.size(), 63);
@ -159,29 +134,29 @@ namespace {
// jb 0x00000001 // jb 0x00000001
// dec %bx // dec %bx
// mov $0x28,%ch // mov $0x28,%ch
[self assert:instructions[0] operation:Operation::SUB size:2 operand:0xea77 destination:Source::eAX]; test(instructions[0], 2, Operation::SUB, Source::Immediate, Source::eAX, 0xea77);
[self assert:instructions[1] operation:Operation::JB displacement:0xfffc]; test(instructions[1], Operation::JB, std::nullopt, 0xfffc);
[self assert:instructions[2] operation:Operation::DEC size:2 source:Source::eBX destination:Source::eBX]; test(instructions[2], 2, Operation::DEC, Source::eBX, Source::eBX);
[self assert:instructions[3] operation:Operation::MOV size:1 operand:0x28 destination:Source::CH]; test(instructions[3], 1, Operation::MOV, Source::Immediate, Source::CH, 0x28);
// ret // ret
// lret $0x4826 // lret $0x4826
// [[ omitted: gs insw (%dx),%es:(%di) ]] // [[ omitted: gs insw (%dx),%es:(%di) ]]
// jnp 0xffffffaf // jnp 0xffffffaf
// ret $0x4265 // ret $0x4265
[self assert:instructions[4] operation:Operation::RETN]; test(instructions[4], Operation::RETN);
[self assert:instructions[5] operation:Operation::RETF operand:0x4826]; test(instructions[5], Operation::RETF, 0x4826);
[self assert:instructions[6] operation:Operation::JNP displacement:0xff9f]; test(instructions[6], Operation::JNP, std::nullopt, 0xff9f);
[self assert:instructions[7] operation:Operation::RETN operand:0x4265]; test(instructions[7], Operation::RETN, 0x4265);
// dec %si // dec %si
// out %ax,(%dx) // out %ax,(%dx)
// jo 0x00000037 // jo 0x00000037
// xchg %ax,%sp // xchg %ax,%sp
[self assert:instructions[8] operation:Operation::DEC size:2 source:Source::eSI destination:Source::eSI]; test(instructions[8], 2, Operation::DEC, Source::eSI, Source::eSI);
[self assert:instructions[9] operation:Operation::OUT size:2 source:Source::eAX destination:Source::eDX]; test(instructions[9], 2, Operation::OUT, Source::eAX, Source::eDX);
[self assert:instructions[10] operation:Operation::JO displacement:0x20]; test(instructions[10], Operation::JO, std::nullopt, 0x20);
[self assert:instructions[11] operation:Operation::XCHG size:2 source:Source::eAX destination:Source::eSP]; test(instructions[11], 2, Operation::XCHG, Source::eAX, Source::eSP);
// ODA has: // ODA has:
// c4 (bad) // c4 (bad)
@ -192,145 +167,148 @@ namespace {
// //
// c4 d4 (bad) // c4 d4 (bad)
// 93 XCHG AX, BX // 93 XCHG AX, BX
[self assert:instructions[12] operation:Operation::Invalid]; test(instructions[12], Operation::Invalid);
[self assert:instructions[13] operation:Operation::XCHG size:2 source:Source::eAX destination:Source::eBX]; test(instructions[13], 2, Operation::XCHG, Source::eAX, Source::eBX);
// inc %bx // inc %bx
// cmp $0x8e,%al // cmp $0x8e,%al
// [[ omitted: push $0x65 ]] // [[ omitted: push $0x65 ]]
// sbb 0x45(%bx,%si),%bh // sbb 0x45(%bx,%si),%bh
// adc %bh,0x3c(%bx) // adc %bh,0x3c(%bx)
[self assert:instructions[14] operation:Operation::INC size:2 source:Source::eBX destination:Source::eBX]; test(instructions[14], 2, Operation::INC, Source::eBX, Source::eBX);
[self assert:instructions[15] operation:Operation::CMP size:1 operand:0x8e destination:Source::eAX]; test(instructions[15], 1, Operation::CMP, Source::Immediate, Source::eAX, 0x8e);
[self assert:instructions[16] operation:Operation::SBB size:1 source:ScaleIndexBase(Source::eBX, Source::eSI) destination:Source::BH displacement:0x45]; test(instructions[16], 1, Operation::SBB, ScaleIndexBase(Source::eBX, Source::eSI), Source::BH, std::nullopt, 0x45);
[self assert:instructions[17] operation:Operation::ADC size:1 source:Source::BH destination:ScaleIndexBase(Source::eBX) displacement:0x3c]; test(instructions[17], 1, Operation::ADC, Source::BH, ScaleIndexBase(Source::eBX), std::nullopt, 0x3c);
// sbb %bx,0x16(%bp,%si) // sbb %bx,0x16(%bp,%si)
// xor %sp,0x2c(%si) // xor %sp,0x2c(%si)
// out %ax,$0xc6 // out %ax,$0xc6
// jge 0xffffffe0 // jge 0xffffffe0
[self assert:instructions[18] operation:Operation::SBB size:2 source:Source::eBX destination:ScaleIndexBase(Source::eBP, Source::eSI) displacement:0x16]; test(instructions[18], 2, Operation::SBB, Source::eBX, ScaleIndexBase(Source::eBP, Source::eSI), std::nullopt, 0x16);
[self assert:instructions[19] operation:Operation::XOR size:2 source:Source::eSP destination:ScaleIndexBase(Source::eSI) displacement:0x2c]; test(instructions[19], 2, Operation::XOR, Source::eSP, ScaleIndexBase(Source::eSI), std::nullopt, 0x2c);
[self assert:instructions[20] operation:Operation::OUT size:2 source:Source::eAX destination:Source::DirectAddress operand:0xc6]; test(instructions[20], 2, Operation::OUT, Source::eAX, Source::DirectAddress, 0xc6);
[self assert:instructions[21] operation:Operation::JNL displacement:0xffb0]; test(instructions[21], Operation::JNL, std::nullopt, 0xffb0);
// mov $0x49,%ch // mov $0x49,%ch
// [[ omitted: addr32 popa ]] // [[ omitted: addr32 popa ]]
// mov $0xcbc0,%dx // mov $0xcbc0,%dx
// adc $0x7e,%al // adc $0x7e,%al
// jno 0x0000000b // jno 0x0000000b
[self assert:instructions[22] operation:Operation::MOV size:1 operand:0x49 destination:Source::CH]; test(instructions[22], 1, Operation::MOV, Source::Immediate, Source::CH, 0x49);
[self assert:instructions[23] operation:Operation::MOV size:2 operand:0xcbc0 destination:Source::eDX]; test(instructions[23], 2, Operation::MOV, Source::Immediate, Source::eDX, 0xcbc0);
[self assert:instructions[24] operation:Operation::ADC size:1 operand:0x7e destination:Source::eAX]; test(instructions[24], 1, Operation::ADC, Source::Immediate, Source::eAX, 0x7e);
[self assert:instructions[25] operation:Operation::JNO displacement:0xffd0]; test(instructions[25], Operation::JNO, std::nullopt, 0xffd0);
// push %ax // push %ax
// js 0x0000007b // js 0x0000007b
// add (%di),%bx // add (%di),%bx
// in $0xc9,%ax // in $0xc9,%ax
[self assert:instructions[26] operation:Operation::PUSH size:2 source:Source::eAX]; test(instructions[26], 2, Operation::PUSH, Source::eAX);
[self assert:instructions[27] operation:Operation::JS displacement:0x3d]; test(instructions[27], Operation::JS, std::nullopt, 0x3d);
[self assert:instructions[28] operation:Operation::ADD size:2 source:ScaleIndexBase(Source::eDI) destination:Source::eBX]; test(instructions[28], 2, Operation::ADD, ScaleIndexBase(Source::eDI), Source::eBX);
[self assert:instructions[29] operation:Operation::IN size:2 source:Source::DirectAddress destination:Source::eAX operand:0xc9]; test(instructions[29], 2, Operation::IN, Source::DirectAddress, Source::eAX, 0xc9);
// xchg %ax,%di // xchg %ax,%di
// ret // ret
// fwait // fwait
// out %al,$0xd3 // out %al,$0xd3
[self assert:instructions[30] operation:Operation::XCHG size:2 source:Source::eAX destination:Source::eDI]; test(instructions[30], 2, Operation::XCHG, Source::eAX, Source::eDI);
[self assert:instructions[31] operation:Operation::RETN]; test(instructions[31], Operation::RETN);
[self assert:instructions[32] operation:Operation::WAIT]; test(instructions[32], Operation::WAIT);
[self assert:instructions[33] operation:Operation::OUT size:1 source:Source::eAX destination:Source::DirectAddress operand:0xd3]; test(instructions[33], 1, Operation::OUT, Source::eAX, Source::DirectAddress, 0xd3);
// [[ omitted: insb (%dx),%es:(%di) ]] // [[ omitted: insb (%dx),%es:(%di) ]]
// pop %ax // pop %ax
// dec %bp // dec %bp
// jbe 0xffffffcc // jbe 0xffffffcc
// inc %sp // inc %sp
[self assert:instructions[34] operation:Operation::POP size:2 destination:Source::eAX]; test(instructions[34], 2, Operation::POP, Source::eAX);
[self assert:instructions[35] operation:Operation::DEC size:2 source:Source::eBP destination:Source::eBP]; test(instructions[35], 2, Operation::DEC, Source::eBP, Source::eBP);
[self assert:instructions[36] operation:Operation::JBE displacement:0xff80]; test(instructions[36], Operation::JBE, std::nullopt, 0xff80);
[self assert:instructions[37] operation:Operation::INC size:2 source:Source::eSP destination:Source::eSP]; test(instructions[37], 2, Operation::INC, Source::eSP, Source::eSP);
// (bad) // (bad)
// lahf // lahf
// movsw %ds:(%si),%es:(%di) // movsw %ds:(%si),%es:(%di)
// mov $0x12a1,%bp // mov $0x12a1,%bp
[self assert:instructions[38] operation:Operation::Invalid]; test(instructions[38], Operation::Invalid);
[self assert:instructions[39] operation:Operation::LAHF]; test(instructions[39], Operation::LAHF);
[self assert:instructions[40] operation:Operation::MOVS size:2]; test(instructions[40], 2, Operation::MOVS); /* Arguments are implicit. */
[self assert:instructions[41] operation:Operation::MOV size:2 operand:0x12a1 destination:Source::eBP]; test(instructions[41], 2, Operation::MOV, Source::Immediate, Source::eBP, 0x12a1);
// lds (%bx,%di),%bp // lds (%bx,%di),%bp
// [[ omitted: leave ]] // [[ omitted: leave ]]
// sahf // sahf
// fdiv %st(3),%st // fdiv %st(3),%st
// iret // iret
[self assert:instructions[42] operation:Operation::LDS size:2]; test(instructions[42], 2, Operation::LDS);
[self assert:instructions[43] operation:Operation::SAHF]; test(instructions[43], Operation::SAHF);
[self assert:instructions[44] operation:Operation::ESC]; test(instructions[44], Operation::ESC);
[self assert:instructions[45] operation:Operation::IRET]; test(instructions[45], Operation::IRET);
// xchg %ax,%dx // xchg %ax,%dx
// cmp %bx,-0x70(%di) // cmp %bx,-0x70(%di)
// adc $0xb8c3,%ax // adc $0xb8c3,%ax
// lods %ds:(%si),%ax // lods %ds:(%si),%ax
[self assert:instructions[46] operation:Operation::XCHG size:2 source:Source::eAX destination:Source::eDX]; test(instructions[46], 2, Operation::XCHG, Source::eAX, Source::eDX);
[self assert:instructions[47] operation:Operation::CMP size:2 source:Source::eBX destination:ScaleIndexBase(Source::eDI) displacement:0xff90]; test(instructions[47], 2, Operation::CMP, Source::eBX, ScaleIndexBase(Source::eDI), std::nullopt, 0xff90);
[self assert:instructions[48] operation:Operation::ADC size:2 operand:0xb8c3 destination:Source::eAX]; test(instructions[48], 2, Operation::ADC, Source::Immediate, Source::eAX, 0xb8c3);
[self assert:instructions[49] operation:Operation::LODS size:2]; test(instructions[49], 2, Operation::LODS);
// call 0x0000172d // call 0x0000172d
// dec %dx // dec %dx
// mov $0x9e,%al // mov $0x9e,%al
// stc // stc
[self assert:instructions[50] operation:Operation::CALLD operand:0x16c8]; test(instructions[50], Operation::CALLD, uint16_t(0x16c8));
[self assert:instructions[51] operation:Operation::DEC size:2 source:Source::eDX destination:Source::eDX]; test(instructions[51], 2, Operation::DEC, Source::eDX, Source::eDX);
[self assert:instructions[52] operation:Operation::MOV size:1 operand:0x9e destination:Source::eAX]; test(instructions[52], 1, Operation::MOV, Source::Immediate, Source::eAX, 0x9e);
[self assert:instructions[53] operation:Operation::STC]; test(instructions[53], Operation::STC);
// mov $0xea56,%di // mov $0xea56,%di
// dec %si // dec %si
// std // std
// in $0x5a,%al // in $0x5a,%al
[self assert:instructions[54] operation:Operation::MOV size:2 operand:0xea56 destination:Source::eDI]; test(instructions[54], 2, Operation::MOV, Source::Immediate, Source::eDI, 0xea56);
[self assert:instructions[55] operation:Operation::DEC size:2 source:Source::eSI destination:Source::eSI]; test(instructions[55], 2, Operation::DEC, Source::eSI, Source::eSI);
[self assert:instructions[56] operation:Operation::STD]; test(instructions[56], Operation::STD);
[self assert:instructions[57] operation:Operation::IN size:1 source:Source::DirectAddress destination:Source::eAX operand:0x5a]; test(instructions[57], 1, Operation::IN, Source::DirectAddress, Source::eAX, 0x5a);
// and 0x5b2c(%bp,%si),%bp // and 0x5b2c(%bp,%si),%bp
// sub %dl,%dl // sub %dl,%dl
// negw 0x18(%bx) // negw 0x18(%bx)
// xchg %dl,0x6425(%bx,%si) // xchg %dl,0x6425(%bx,%si)
[self assert:instructions[58] operation:Operation::AND size:2 source:ScaleIndexBase(Source::eBP, Source::eSI) destination:Source::eBP displacement:0x5b2c]; test(instructions[58], 2, Operation::AND, ScaleIndexBase(Source::eBP, Source::eSI), Source::eBP, std::nullopt, 0x5b2c);
[self assert:instructions[59] operation:Operation::SUB size:1 source:Source::eDX destination:Source::eDX]; test(instructions[59], 1, Operation::SUB, Source::eDX, Source::eDX);
[self assert:instructions[60] operation:Operation::NEG size:2 source:ScaleIndexBase(Source::eBX) destination:ScaleIndexBase(Source::eBX) displacement:0x18]; test(instructions[60], 2, Operation::NEG, ScaleIndexBase(Source::eBX), ScaleIndexBase(Source::eBX), std::nullopt, 0x18);
[self assert:instructions[61] operation:Operation::XCHG size:1 source:ScaleIndexBase(Source::eBX, Source::eSI) destination:Source::eDX displacement:0x6425]; test(instructions[61], 1, Operation::XCHG, ScaleIndexBase(Source::eBX, Source::eSI), Source::eDX, std::nullopt, 0x6425);
// mov $0xc3,%bh // mov $0xc3,%bh
[self assert:instructions[62] operation:Operation::MOV size:1 operand:0xc3 destination:Source::BH]; test(instructions[62], 1, Operation::MOV, Source::Immediate, Source::BH, 0xc3);
} }
- (void)test83 { - (void)test83 {
[self decode:{ const auto instructions = decode<Model::i8086>({
0x83, 0x10, 0x80, // adcw $0xff80,(%bx,%si) 0x83, 0x10, 0x80, // adcw $0xff80,(%bx,%si)
0x83, 0x3b, 0x04, // cmpw $0x4,(%bp,%di) 0x83, 0x3b, 0x04, // cmpw $0x4,(%bp,%di)
0x83, 0x2f, 0x09, // subw $0x9,(%bx) 0x83, 0x2f, 0x09, // subw $0x9,(%bx)
}]; });
XCTAssertEqual(instructions.size(), 3); XCTAssertEqual(instructions.size(), 3);
[self assert:instructions[0] operation:Operation::ADC size:2 source:Source::Immediate destination:ScaleIndexBase(Source::eBX, Source::eSI) operand:0xff80]; test(instructions[0], 2, Operation::ADC, Source::Immediate, ScaleIndexBase(Source::eBX, Source::eSI), 0xff80);
[self assert:instructions[1] operation:Operation::CMP size:2 source:Source::Immediate destination:ScaleIndexBase(Source::eBP, Source::eDI) operand:0x4]; test(instructions[1], 2, Operation::CMP, Source::Immediate, ScaleIndexBase(Source::eBP, Source::eDI), 0x4);
[self assert:instructions[2] operation:Operation::SUB size:2 source:Source::Immediate destination:ScaleIndexBase(Source::eBX) operand:0x9]; test(instructions[2], 2, Operation::SUB, Source::Immediate, ScaleIndexBase(Source::eBX), 0x9);
} }
- (void)testFar { - (void)testFar {
[self decode:{ const auto instructions = decode<Model::i8086>({
0x9a, 0x12, 0x34, 0x56, 0x78, // lcall 0x7856, 0x3412 0x9a, 0x12, 0x34, 0x56, 0x78, // lcall 0x7856, 0x3412
}]; });
XCTAssertEqual(instructions.size(), 1); XCTAssertEqual(instructions.size(), 1);
[self assert:instructions[0] operation:Operation::CALLF segment:0x7856 offset:0x3412]; test_far(instructions[0], Operation::CALLF, 0x7856, 0x3412);
}
- (void)testSequence2 {
} }
@end @end