MIPS port initial commit

test/cctest/test-assembler-mips.cc

+// Copyright 2010 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "v8.h"
+
+#include "disassembler.h"
+#include "factory.h"
+#include "macro-assembler.h"
+#include "mips/macro-assembler-mips.h"
+#include "mips/simulator-mips.h"
+
+#include "cctest.h"
+
+using namespace v8::internal;
+
+
+// Define these function prototypes to match JSEntryFunction in execution.cc.
+typedef Object* (*F1)(int x, int p1, int p2, int p3, int p4);
+typedef Object* (*F2)(int x, int y, int p2, int p3, int p4);
+typedef Object* (*F3)(void* p, int p1, int p2, int p3, int p4);
+
+
+static v8::Persistent<v8::Context> env;
+
+
+// The test framework does not accept flags on the command line, so we set them.
+static void InitializeVM() {
+  // Disable compilation of natives by specifying an empty natives file.
+  FLAG_natives_file = "";
+
+  // Enable generation of comments.
+  FLAG_debug_code = true;
+
+  if (env.IsEmpty()) {
+    env = v8::Context::New();
+  }
+}
+
+
+#define __ assm.
+
+TEST(MIPS0) {
+  InitializeVM();
+  v8::HandleScope scope;
+
+  MacroAssembler assm(NULL, 0);
+
+  // Addition.
+  __ addu(v0, a0, a1);
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = Heap::CreateCode(desc,
+                                  NULL,
+                                  Code::ComputeFlags(Code::STUB),
+                                  Handle<Object>(Heap::undefined_value()));
+  CHECK(code->IsCode());
+#ifdef DEBUG
+  Code::cast(code)->Print();
+#endif
+  F2 f = FUNCTION_CAST<F2>(Code::cast(code)->entry());
+  int res = reinterpret_cast<int>(CALL_GENERATED_CODE(f, 0xab0, 0xc, 0, 0, 0));
+  ::printf("f() = %d\n", res);
+  CHECK_EQ(0xabc, res);
+}
+
+
+TEST(MIPS1) {
+  InitializeVM();
+  v8::HandleScope scope;
+
+  MacroAssembler assm(NULL, 0);
+  Label L, C;
+
+  __ mov(a1, a0);
+  __ li(v0, 0);
+  __ b(&C);
+  __ nop();
+
+  __ bind(&L);
+  __ add(v0, v0, a1);
+  __ addiu(a1, a1, -1);
+
+  __ bind(&C);
+  __ xori(v1, a1, 0);
+  __ Branch(ne, &L, v1, Operand(0));
+  __ nop();
+
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = Heap::CreateCode(desc,
+                                  NULL,
+                                  Code::ComputeFlags(Code::STUB),
+                                  Handle<Object>(Heap::undefined_value()));
+  CHECK(code->IsCode());
+#ifdef DEBUG
+  Code::cast(code)->Print();
+#endif
+  F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
+  int res = reinterpret_cast<int>(CALL_GENERATED_CODE(f, 50, 0, 0, 0, 0));
+  ::printf("f() = %d\n", res);
+  CHECK_EQ(1275, res);
+}
+
+
+TEST(MIPS2) {
+  InitializeVM();
+  v8::HandleScope scope;
+
+  MacroAssembler assm(NULL, 0);
+
+  Label exit, error;
+
+  // ----- Test all instructions.
+
+  // Test lui, ori, and addiu, used in the li pseudo-instruction.
+  // This way we can then safely load registers with chosen values.
+
+  __ ori(t0, zero_reg, 0);
+  __ lui(t0, 0x1234);
+  __ ori(t0, t0, 0);
+  __ ori(t0, t0, 0x0f0f);
+  __ ori(t0, t0, 0xf0f0);
+  __ addiu(t1, t0, 1);
+  __ addiu(t2, t1, -0x10);
+
+  // Load values in temporary registers.
+  __ li(t0, 0x00000004);
+  __ li(t1, 0x00001234);
+  __ li(t2, 0x12345678);
+  __ li(t3, 0x7fffffff);
+  __ li(t4, 0xfffffffc);
+  __ li(t5, 0xffffedcc);
+  __ li(t6, 0xedcba988);
+  __ li(t7, 0x80000000);
+
+  // SPECIAL class.
+  __ srl(v0, t2, 8);    // 0x00123456
+  __ sll(v0, v0, 11);   // 0x91a2b000
+  __ sra(v0, v0, 3);    // 0xf2345600
+  __ srav(v0, v0, t0);  // 0xff234560
+  __ sllv(v0, v0, t0);  // 0xf2345600
+  __ srlv(v0, v0, t0);  // 0x0f234560
+  __ Branch(ne, &error, v0, Operand(0x0f234560));
+  __ nop();
+
+  __ add(v0, t0, t1);   // 0x00001238
+  __ sub(v0, v0, t0);   // 0x00001234
+  __ Branch(ne, &error, v0, Operand(0x00001234));
+  __ nop();
+  __ addu(v1, t3, t0);
+  __ Branch(ne, &error, v1, Operand(0x80000003));
+  __ nop();
+  __ subu(v1, t7, t0);  // 0x7ffffffc
+  __ Branch(ne, &error, v1, Operand(0x7ffffffc));
+  __ nop();
+
+  __ and_(v0, t1, t2);  // 0x00001230
+  __ or_(v0, v0, t1);   // 0x00001234
+  __ xor_(v0, v0, t2);  // 0x1234444c
+  __ nor(v0, v0, t2);   // 0xedcba987
+  __ Branch(ne, &error, v0, Operand(0xedcba983));
+  __ nop();
+
+  __ slt(v0, t7, t3);
+  __ Branch(ne, &error, v0, Operand(0x1));
+  __ nop();
+  __ sltu(v0, t7, t3);
+  __ Branch(ne, &error, v0, Operand(0x0));
+  __ nop();
+  // End of SPECIAL class.
+
+  __ addi(v0, zero_reg, 0x7421);  // 0x00007421
+  __ addi(v0, v0, -0x1);  // 0x00007420
+  __ addiu(v0, v0, -0x20);  // 0x00007400
+  __ Branch(ne, &error, v0, Operand(0x00007400));
+  __ nop();
+  __ addiu(v1, t3, 0x1);  // 0x80000000
+  __ Branch(ne, &error, v1, Operand(0x80000000));
+  __ nop();
+
+  __ slti(v0, t1, 0x00002000);  // 0x1
+  __ slti(v0, v0, 0xffff8000);  // 0x0
+  __ Branch(ne, &error, v0, Operand(0x0));
+  __ nop();
+  __ sltiu(v0, t1, 0x00002000);  // 0x1
+  __ sltiu(v0, v0, 0x00008000);  // 0x1
+  __ Branch(ne, &error, v0, Operand(0x1));
+  __ nop();
+
+  __ andi(v0, t1, 0xf0f0);  // 0x00001030
+  __ ori(v0, v0, 0x8a00);  // 0x00009a30
+  __ xori(v0, v0, 0x83cc);  // 0x000019fc
+  __ Branch(ne, &error, v0, Operand(0x000019fc));
+  __ nop();
+  __ lui(v1, 0x8123);  // 0x81230000
+  __ Branch(ne, &error, v1, Operand(0x81230000));
+  __ nop();
+
+  // Everything was correctly executed. Load the expected result.
+  __ li(v0, 0x31415926);
+  __ b(&exit);
+  __ nop();
+
+  __ bind(&error);
+  // Got an error. Return a wrong result.
+
+  __ bind(&exit);
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = Heap::CreateCode(desc,
+                                  NULL,
+                                  Code::ComputeFlags(Code::STUB),
+                                  Handle<Object>(Heap::undefined_value()));
+  CHECK(code->IsCode());
+#ifdef DEBUG
+  Code::cast(code)->Print();
+#endif
+  F2 f = FUNCTION_CAST<F2>(Code::cast(code)->entry());
+  int res = reinterpret_cast<int>(CALL_GENERATED_CODE(f, 0xab0, 0xc, 0, 0, 0));
+  ::printf("f() = %d\n", res);
+  CHECK_EQ(0x31415926, res);
+}
+
+#undef __