Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include <stdlib.h> |
| 6 | |
| 7 | #include "src/v8.h" |
| 8 | |
| 9 | #include "src/debug/debug.h" |
| 10 | #include "src/disasm.h" |
| 11 | #include "src/disassembler.h" |
| 12 | #include "src/ic/ic.h" |
| 13 | #include "src/macro-assembler.h" |
| 14 | #include "src/x87/frames-x87.h" |
| 15 | #include "test/cctest/cctest.h" |
| 16 | #include "test/cctest/compiler/c-signature.h" |
| 17 | #include "test/cctest/compiler/call-tester.h" |
| 18 | |
| 19 | using namespace v8::internal; |
| 20 | using namespace v8::internal::compiler; |
| 21 | |
| 22 | #define __ assm. |
| 23 | |
| 24 | static int32_t DummyStaticFunction(Object* result) { return 1; } |
| 25 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 26 | TEST(WasmRelocationX87MemoryReference) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 27 | Isolate* isolate = CcTest::i_isolate(); |
| 28 | Zone zone(isolate->allocator()); |
| 29 | HandleScope scope(isolate); |
| 30 | v8::internal::byte buffer[4096]; |
| 31 | Assembler assm(isolate, buffer, sizeof buffer); |
| 32 | DummyStaticFunction(NULL); |
| 33 | int32_t imm = 1234567; |
| 34 | |
| 35 | __ mov(eax, Immediate(reinterpret_cast<Address>(imm), |
| 36 | RelocInfo::WASM_MEMORY_REFERENCE)); |
| 37 | __ nop(); |
| 38 | __ ret(0); |
| 39 | |
| 40 | CSignature0<int32_t> csig; |
| 41 | CodeDesc desc; |
| 42 | assm.GetCode(&desc); |
| 43 | Handle<Code> code = isolate->factory()->NewCode( |
| 44 | desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); |
| 45 | USE(code); |
| 46 | |
| 47 | CodeRunner<int32_t> runnable(isolate, code, &csig); |
| 48 | int32_t ret_value = runnable.Call(); |
| 49 | CHECK_EQ(ret_value, imm); |
| 50 | |
| 51 | #ifdef OBJECT_PRINT |
| 52 | OFStream os(stdout); |
| 53 | code->Print(os); |
| 54 | byte* begin = code->instruction_start(); |
| 55 | byte* end = begin + code->instruction_size(); |
| 56 | disasm::Disassembler::Disassemble(stdout, begin, end); |
| 57 | #endif |
| 58 | |
| 59 | size_t offset = 1234; |
| 60 | |
| 61 | // Relocating references by offset |
| 62 | int mode_mask = (1 << RelocInfo::WASM_MEMORY_REFERENCE); |
| 63 | for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) { |
| 64 | RelocInfo::Mode mode = it.rinfo()->rmode(); |
| 65 | if (RelocInfo::IsWasmMemoryReference(mode)) { |
| 66 | // Dummy values of size used here as the objective of the test is to |
| 67 | // verify that the immediate is patched correctly |
| 68 | it.rinfo()->update_wasm_memory_reference( |
| 69 | it.rinfo()->wasm_memory_reference(), |
| 70 | it.rinfo()->wasm_memory_reference() + offset, 1, 2, |
| 71 | SKIP_ICACHE_FLUSH); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | // Check if immediate is updated correctly |
| 76 | ret_value = runnable.Call(); |
| 77 | CHECK_EQ(ret_value, imm + offset); |
| 78 | |
| 79 | #ifdef OBJECT_PRINT |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 80 | code->Print(os); |
| 81 | begin = code->instruction_start(); |
| 82 | end = begin + code->instruction_size(); |
| 83 | disasm::Disassembler::Disassemble(stdout, begin, end); |
| 84 | #endif |
| 85 | } |
| 86 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 87 | TEST(WasmRelocationX87MemorySizeReference) { |
| 88 | CcTest::InitializeVM(); |
| 89 | Isolate* isolate = CcTest::i_isolate(); |
| 90 | Zone zone(isolate->allocator()); |
| 91 | HandleScope scope(isolate); |
| 92 | v8::internal::byte buffer[4096]; |
| 93 | Assembler assm(isolate, buffer, sizeof buffer); |
| 94 | DummyStaticFunction(NULL); |
| 95 | int32_t size = 80; |
| 96 | Label fail; |
| 97 | |
| 98 | __ mov(eax, Immediate(reinterpret_cast<Address>(size), |
| 99 | RelocInfo::WASM_MEMORY_SIZE_REFERENCE)); |
| 100 | __ cmp(eax, Immediate(reinterpret_cast<Address>(size), |
| 101 | RelocInfo::WASM_MEMORY_SIZE_REFERENCE)); |
| 102 | __ j(not_equal, &fail); |
| 103 | __ ret(0); |
| 104 | __ bind(&fail); |
| 105 | __ mov(eax, 0xdeadbeef); |
| 106 | __ ret(0); |
| 107 | |
| 108 | CSignature0<int32_t> csig; |
| 109 | CodeDesc desc; |
| 110 | assm.GetCode(&desc); |
| 111 | Handle<Code> code = isolate->factory()->NewCode( |
| 112 | desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); |
| 113 | USE(code); |
| 114 | |
| 115 | CodeRunner<int32_t> runnable(isolate, code, &csig); |
| 116 | int32_t ret_value = runnable.Call(); |
| 117 | CHECK_NE(ret_value, 0xdeadbeef); |
| 118 | |
| 119 | #ifdef OBJECT_PRINT |
| 120 | OFStream os(stdout); |
| 121 | code->Print(os); |
| 122 | byte* begin = code->instruction_start(); |
| 123 | byte* end = begin + code->instruction_size(); |
| 124 | disasm::Disassembler::Disassemble(stdout, begin, end); |
| 125 | #endif |
| 126 | |
| 127 | size_t offset = 10; |
| 128 | |
| 129 | int mode_mask = (1 << RelocInfo::WASM_MEMORY_SIZE_REFERENCE); |
| 130 | for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) { |
| 131 | RelocInfo::Mode mode = it.rinfo()->rmode(); |
| 132 | if (RelocInfo::IsWasmMemorySizeReference(mode)) { |
| 133 | it.rinfo()->update_wasm_memory_reference( |
| 134 | reinterpret_cast<Address>(1234), reinterpret_cast<Address>(1234), |
| 135 | it.rinfo()->wasm_memory_size_reference(), |
| 136 | it.rinfo()->wasm_memory_size_reference() + offset, SKIP_ICACHE_FLUSH); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | ret_value = runnable.Call(); |
| 141 | CHECK_NE(ret_value, 0xdeadbeef); |
| 142 | |
| 143 | #ifdef OBJECT_PRINT |
| 144 | code->Print(os); |
| 145 | begin = code->instruction_start(); |
| 146 | end = begin + code->instruction_size(); |
| 147 | disasm::Disassembler::Disassemble(stdout, begin, end); |
| 148 | #endif |
| 149 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 150 | #undef __ |