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Unified Diff: test/cctest/test-assembler-mips.cc

Issue 1195793002: MIPS: Implemented PC-relative instructions for R6. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 6 months ago
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Index: test/cctest/test-assembler-mips.cc
diff --git a/test/cctest/test-assembler-mips.cc b/test/cctest/test-assembler-mips.cc
index 3dd294573b8777d6547c8fd06f7a5ef9e88db8d7..af7f58fe858701d78537c69221b47c31f4341c85 100644
--- a/test/cctest/test-assembler-mips.cc
+++ b/test/cctest/test-assembler-mips.cc
@@ -4262,10 +4262,12 @@ TEST(DIV_FMT) {
__ jr(ra);
__ nop();
+
CodeDesc desc;
assm.GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
F3 f = FUNCTION_CAST<F3>(code->entry());
(CALL_GENERATED_CODE(f, &test, 0, 0, 0, 0));
@@ -4343,4 +4345,707 @@ TEST(DIV_FMT) {
}
+uint32_t run_align(uint32_t rs_value, uint32_t rt_value, uint8_t bp) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ __ align(v0, a0, a1, bp);
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+
+ uint32_t res =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, rs_value,
+ rt_value,
+ 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_align) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseAlign {
+ uint32_t rs_value;
+ uint32_t rt_value;
+ uint8_t bp;
+ uint32_t expected_res;
+ };
+
+ struct TestCaseAlign tc[] = {
+ // rs_value, rt_value, bp, expected_res
+ { 0x11223344, 0xaabbccdd, 0, 0xaabbccdd },
+ { 0x11223344, 0xaabbccdd, 1, 0xbbccdd11 },
+ { 0x11223344, 0xaabbccdd, 2, 0xccdd1122 },
+ { 0x11223344, 0xaabbccdd, 3, 0xdd112233 },
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseAlign);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ CHECK_EQ(tc[i].expected_res, run_align(tc[i].rs_value,
+ tc[i].rt_value, tc[i].bp));
+ }
+ }
+}
+
+uint32_t PC; // The program counter.
+
+uint32_t run_aluipc(int16_t offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ __ aluipc(v0, offset);
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+ PC = (uint32_t) f; // Set the program counter.
+
+ uint32_t res =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_aluipc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseAluipc {
+ int16_t offset;
+ };
+
+ struct TestCaseAluipc tc[] = {
+ // offset
+ { -32768 }, // 0x8000
+ { -1 }, // 0xFFFF
+ { 0 },
+ { 1 },
+ { 32767 }, // 0x7FFF
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseAluipc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ PC = 0;
+ uint32_t res = run_aluipc(tc[i].offset);
+ // Now, the program_counter (PC) is set.
+ uint32_t expected_res = ~0x0FFFF & (PC + (tc[i].offset << 16));
+ CHECK_EQ(expected_res, res);
+ }
+ }
+}
+
+
+uint32_t run_auipc(int16_t offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ __ auipc(v0, offset);
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+ PC = (uint32_t) f; // Set the program counter.
+
+ uint32_t res =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_auipc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseAuipc {
+ int16_t offset;
+ };
+
+ struct TestCaseAuipc tc[] = {
+ // offset
+ { -32768 }, // 0x8000
+ { -1 }, // 0xFFFF
+ { 0 },
+ { 1 },
+ { 32767 }, // 0x7FFF
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseAuipc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ PC = 0;
+ uint32_t res = run_auipc(tc[i].offset);
+ // Now, the program_counter (PC) is set.
+ uint32_t expected_res = PC + (tc[i].offset << 16);
+ CHECK_EQ(expected_res, res);
+ }
+ }
+}
+
+
+uint32_t run_lwpc(int offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ // 256k instructions; 2^8k
+ // addiu t7, t0, 0xffff; (0x250fffff)
+ // ...
+ // addiu t4, t0, 0x0000; (0x250c0000)
+ uint32_t addiu_start_1 = 0x25000000;
+ for (int32_t i = 0xfffff; i >= 0xc0000; --i) {
+ uint32_t addiu_new = addiu_start_1 + i;
+ __ dd(addiu_new);
+ }
+
+ __ lwpc(t8, offset); // offset 0; 0xef080000 (t8 register)
+ __ mov(v0, t8);
+
+ // 256k instructions; 2^8k
+ // addiu t0, t0, 0x0000; (0x25080000)
+ // ...
+ // addiu t3, t0, 0xffff; (0x250bffff)
+ uint32_t addiu_start_2 = 0x25000000;
+ for (int32_t i = 0x80000; i <= 0xbffff; ++i) {
+ uint32_t addiu_new = addiu_start_2 + i;
+ __ dd(addiu_new);
+ }
+
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+
+ uint32_t res =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_lwpc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseLwpc {
+ int offset;
+ uint32_t expected_res;
+ };
+
+ struct TestCaseLwpc tc[] = {
+ // offset, expected_res
+ { -262144, 0x250fffff }, // offset 0x40000
+ { -4, 0x250c0003 },
+ { -1, 0x250c0000 },
+ { 0, 0xef080000 },
+ { 1, 0x03001025 }, // mov(v0, t8)
+ { 2, 0x25080000 },
+ { 4, 0x25080002 },
+ { 262143, 0x250bfffd }, // offset 0x3ffff
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseLwpc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ uint32_t res = run_lwpc(tc[i].offset);
+ CHECK_EQ(tc[i].expected_res, res);
+ }
+ }
+}
+
+
+uint32_t run_jic(int16_t offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ Label get_program_counter, stop_execution;
+ __ push(ra);
+ __ li(v0, 0);
+ __ li(t1, 0x66);
+
+ __ addiu(v0, v0, 0x1); // <-- offset = -32
+ __ addiu(v0, v0, 0x2);
+ __ addiu(v0, v0, 0x10);
+ __ addiu(v0, v0, 0x20);
+ __ beq(v0, t1, &stop_execution);
+ __ nop();
+
+ __ bal(&get_program_counter); // t0 <- program counter
+ __ nop();
+ __ jic(t0, offset);
+
+ __ addiu(v0, v0, 0x100);
+ __ addiu(v0, v0, 0x200);
+ __ addiu(v0, v0, 0x1000);
+ __ addiu(v0, v0, 0x2000); // <--- offset = 16
+ __ pop(ra);
+ __ jr(ra);
+ __ nop();
+
+ __ bind(&get_program_counter);
+ __ mov(t0, ra);
+ __ jr(ra);
+ __ nop();
+
+ __ bind(&stop_execution);
+ __ pop(ra);
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+
+ uint32_t res =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_jic) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseJic {
+ // As rt will be used t0 register which will have value of
+ // the program counter for the jic instruction.
+ int16_t offset;
+ uint32_t expected_res;
+ };
+
+ struct TestCaseJic tc[] = {
+ // offset, expected_result
+ { 16, 0x2033 },
+ { 4, 0x3333 },
+ { -32, 0x66 },
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseJic);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ uint32_t res = run_jic(tc[i].offset);
+ CHECK_EQ(tc[i].expected_res, res);
+ }
+ }
+}
+
+
+uint64_t run_beqzc(int32_t value, int32_t offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ Label stop_execution;
+ __ li(v0, 0);
+ __ li(t1, 0x66);
+ __ push(ra);
+
+ __ addiu(v0, v0, 0x1); // <-- offset = -32
+ __ addiu(v0, v0, 0x2);
+ __ addiu(v0, v0, 0x10);
+ __ addiu(v0, v0, 0x20);
+ __ beq(v0, t1, &stop_execution);
+ __ nop();
+
+ __ beqzc(a0, offset); // BEQZC rs, offset
+
+ __ addiu(v0, v0, 0x1);
+ __ addiu(v0, v0, 0x100);
+ __ addiu(v0, v0, 0x200);
+ __ addiu(v0, v0, 0x1000);
+ __ addiu(v0, v0, 0x2000); // <--- offset = 16
+ __ jr(ra);
+ __ nop();
+
+ __ bind(&stop_execution);
+ __ pop(ra);
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+
+ uint32_t res =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, value, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_beqzc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseBeqzc {
+ uint32_t value;
+ int32_t offset;
+ uint32_t expected_res;
+ };
+
+ struct TestCaseBeqzc tc[] = {
+ // value, offset, expected_res
+ { 0x0, -8, 0x66 },
+ { 0x0, 0, 0x3334 },
+ { 0x0, 1, 0x3333 },
+ { 0xabc, 1, 0x3334 },
+ { 0x0, 4, 0x2033 },
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseBeqzc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ uint32_t res = run_beqzc(tc[i].value, tc[i].offset);
+ CHECK_EQ(tc[i].expected_res, res);
+ }
+ }
+}
+
+
+uint32_t run_jialc(int16_t offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ Label main_block, get_program_counter;
+ __ push(ra);
+ __ li(v0, 0);
+ __ beq(v0, v0, &main_block);
+ __ nop();
+
+ // Block 1
+ __ addiu(v0, v0, 0x1); // <-- offset = -40
+ __ addiu(v0, v0, 0x2);
+ __ jr(ra);
+ __ nop();
+
+ // Block 2
+ __ addiu(v0, v0, 0x10); // <-- offset = -24
+ __ addiu(v0, v0, 0x20);
+ __ jr(ra);
+ __ nop();
+
+ // Block 3 (Main)
+ __ bind(&main_block);
+ __ bal(&get_program_counter); // t0 <- program counter
+ __ nop();
+ __ jialc(t0, offset);
+ __ addiu(v0, v0, 0x4);
+ __ pop(ra);
+ __ jr(ra);
+ __ nop();
+
+ // Block 4
+ __ addiu(v0, v0, 0x100); // <-- offset = 20
+ __ addiu(v0, v0, 0x200);
+ __ jr(ra);
+ __ nop();
+
+ // Block 5
+ __ addiu(v0, v0, 0x1000); // <--- offset = 36
+ __ addiu(v0, v0, 0x2000);
+ __ jr(ra);
+ __ nop();
+
+ __ bind(&get_program_counter);
+ __ mov(t0, ra);
+ __ jr(ra);
+ __ nop();
+
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+
+ uint32_t res =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_jialc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseJialc {
+ int16_t offset;
+ uint32_t expected_res;
+ };
+
+ struct TestCaseJialc tc[] = {
+ // offset, expected_res
+ { -40, 0x7 },
+ { -24, 0x34 },
+ { 20, 0x304 },
+ { 36, 0x3004 }
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseJialc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ uint32_t res = run_jialc(tc[i].offset);
+ CHECK_EQ(tc[i].expected_res, res);
+ }
+ }
+}
+
+
+uint64_t run_addiupc(int32_t imm19) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ __ addiupc(v0, imm19);
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+ PC = (uint32_t) f; // Set the program counter.
+
+ uint32_t rs =
+ reinterpret_cast<uint32_t>(CALL_GENERATED_CODE(f, imm19, 0, 0, 0, 0));
+
+ return rs;
+}
+
+
+TEST(r6_addiupc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseAddiupc {
+ int32_t imm19;
+ };
+
+ struct TestCaseAddiupc tc[] = {
+ // imm19
+ { -262144 }, // 0x40000
+ { -1 }, // 0x7FFFF
+ { 0 },
+ { 1 }, // 0x00001
+ { 262143 } // 0x3FFFF
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseAddiupc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ PC = 0;
+ uint32_t res = run_addiupc(tc[i].imm19);
+ // Now, the program_counter (PC) is set.
+ uint32_t expected_res = PC + (tc[i].imm19 << 2);
+ CHECK_EQ(expected_res, res);
+ }
+ }
+}
+
+
+int32_t run_bc(int32_t offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ Label continue_1, stop_execution;
+ __ push(ra);
+ __ li(v0, 0);
+ __ li(t8, 0);
+ __ li(t9, 2); // A condition for stopping execution.
+
+ uint32_t instruction_addiu = 0x24420001; // addiu v0, v0, 1
+ for (int32_t i = -100; i <= -11; ++i) {
+ __ dd(instruction_addiu);
+ }
+
+ __ addiu(t8, t8, 1); // -10
+
+ __ beq(t8, t9, &stop_execution); // -9
+ __ nop(); // -8
+ __ beq(t8, t8, &continue_1); // -7
+ __ nop(); // -6
+
+ __ bind(&stop_execution);
+ __ pop(ra); // -5, -4
+ __ jr(ra); // -3
+ __ nop(); // -2
+
+ __ bind(&continue_1);
+ __ bc(offset); // -1
+
+ for (int32_t i = 0; i <= 99; ++i) {
+ __ dd(instruction_addiu);
+ }
+
+ __ pop(ra);
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+
+ int32_t res =
+ reinterpret_cast<int32_t>(CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_bc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseBc {
+ int32_t offset;
+ int32_t expected_res;
+ };
+
+ struct TestCaseBc tc[] = {
+ // offset, expected_result
+ { -100, (abs(-100) - 10) * 2 },
+ { -11, (abs(-100) - 10 + 1) },
+ { 0, (abs(-100) - 10 + 1 + 99) },
+ { 1, (abs(-100) - 10 + 99) },
+ { 99, (abs(-100) - 10 + 1) },
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseBc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ int32_t res = run_bc(tc[i].offset);
+ CHECK_EQ(tc[i].expected_res, res);
+ }
+ }
+}
+
+
+int32_t run_balc(int32_t offset) {
+ Isolate* isolate = CcTest::i_isolate();
+ HandleScope scope(isolate);
+
+ MacroAssembler assm(isolate, NULL, 0);
+
+ Label continue_1, stop_execution;
+ __ push(ra);
+ __ li(v0, 0);
+ __ li(t8, 0);
+ __ li(t9, 2); // A condition for stopping execution.
+
+ __ beq(t8, t8, &continue_1);
+ __ nop();
+
+ uint32_t instruction_addiu = 0x24420001; // addiu v0, v0, 1
+ for (int32_t i = -117; i <= -57; ++i) {
+ __ dd(instruction_addiu);
+ }
+ __ jr(ra); // -56
+ __ nop(); // -55
+
+ for (int32_t i = -54; i <= -4; ++i) {
+ __ dd(instruction_addiu);
+ }
+ __ jr(ra); // -3
+ __ nop(); // -2
+
+ __ bind(&continue_1);
+ __ balc(offset); // -1
+
+ __ pop(ra); // 0, 1
+ __ jr(ra); // 2
+ __ nop(); // 3
+
+ for (int32_t i = 4; i <= 44; ++i) {
+ __ dd(instruction_addiu);
+ }
+ __ jr(ra);
+ __ nop();
+
+ CodeDesc desc;
+ assm.GetCode(&desc);
+ Handle<Code> code = isolate->factory()->NewCode(
+ desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+ F2 f = FUNCTION_CAST<F2>(code->entry());
+
+ int32_t res =
+ reinterpret_cast<int32_t>(CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0));
+
+ return res;
+}
+
+
+TEST(r6_balc) {
+ if (IsMipsArchVariant(kMips32r6)) {
+ CcTest::InitializeVM();
+
+ struct TestCaseBalc {
+ int32_t offset;
+ int32_t expected_res;
+ };
+
+ struct TestCaseBalc tc[] = {
+ // offset, expected_result
+ { -117, 61 },
+ { -54, 51 },
+ { 0, 0 },
+ { 4, 41 },
+ };
+
+ size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseBalc);
+ for (size_t i = 0; i < nr_test_cases; ++i) {
+ int32_t res = run_balc(tc[i].offset);
+ CHECK_EQ(tc[i].expected_res, res);
+ }
+ }
+}
+
+
#undef __
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