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// Copyright 2011 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 <stdlib.h>
#include "src/init/v8.h"
#include "src/codegen/macro-assembler.h"
#include "src/debug/debug.h"
#include "src/diagnostics/disasm.h"
#include "src/diagnostics/disassembler.h"
#include "src/execution/frames-inl.h"
#include "test/cctest/cctest.h"
namespace v8 {
namespace internal {
bool DisassembleAndCompare(byte* pc, const char* compare_string) {
disasm::NameConverter converter;
disasm::Disassembler disasm(converter);
EmbeddedVector<char, 128> disasm_buffer;
disasm.InstructionDecode(disasm_buffer, pc);
if (strcmp(compare_string, disasm_buffer.begin()) != 0) {
fprintf(stderr,
"expected: \n"
"%s\n"
"disassembled: \n"
"%s\n\n",
compare_string, disasm_buffer.begin());
return false;
}
return true;
}
// Set up V8 to a state where we can at least run the assembler and
// disassembler. Declare the variables and allocate the data structures used
// in the rest of the macros.
#define SET_UP() \
CcTest::InitializeVM(); \
Isolate* isolate = CcTest::i_isolate(); \
HandleScope scope(isolate); \
byte* buffer = reinterpret_cast<byte*>(malloc(4 * 1024)); \
Assembler assm(AssemblerOptions{}, \
ExternalAssemblerBuffer(buffer, 4 * 1024)); \
bool failure = false;
// This macro assembles one instruction using the preallocated assembler and
// disassembles the generated instruction, comparing the output to the expected
// value. If the comparison fails an error message is printed, but the test
// continues to run until the end.
#define COMPARE(asm_, compare_string) \
{ \
int pc_offset = assm.pc_offset(); \
byte* progcounter = &buffer[pc_offset]; \
assm.asm_; \
if (!DisassembleAndCompare(progcounter, compare_string)) failure = true; \
}
// Force emission of any pending literals into a pool.
#define EMIT_PENDING_LITERALS() assm.CheckConstPool(true, false)
// Verify that all invocations of the COMPARE macro passed successfully.
// Exit with a failure if at least one of the tests failed.
#define VERIFY_RUN() \
if (failure) { \
FATAL("PPC Disassembler tests failed.\n"); \
}
TEST(DisasmPPC) {
SET_UP();
COMPARE(addc(r9, r7, r9), "7d274814 addc r9, r7, r9");
COMPARE(addic(r3, r5, Operand(20)), "30650014 addic r3, r5, 20");
COMPARE(addi(r0, ip, Operand(63)), "380c003f addi r0, ip, 63");
COMPARE(add(r5, r7, r0), "7ca70214 add r5, r7, r0");
COMPARE(addze(r0, r0, LeaveOE, SetRC), "7c000195 addze. r0, r0");
COMPARE(andi(r0, r3, Operand(4)), "70600004 andi. r0, r3, 4");
COMPARE(and_(r3, r6, r5), "7cc32838 and r3, r6, r5");
COMPARE(and_(r6, r0, r6, SetRC), "7c063039 and. r6, r0, r6");
// skipping branches (for now?)
COMPARE(bctr(), "4e800420 bctr");
COMPARE(bctrl(), "4e800421 bctrl");
COMPARE(blr(), "4e800020 blr");
// skipping call - only used in simulator
#if V8_TARGET_ARCH_PPC64
COMPARE(cmpi(r0, Operand(5)), "2fa00005 cmpi r0, 5");
#else
COMPARE(cmpi(r0, Operand(5)), "2f800005 cmpi r0, 5");
#endif
#if V8_TARGET_ARCH_PPC64
COMPARE(cmpl(r6, r7), "7fa63840 cmpl r6, r7");
#else
COMPARE(cmpl(r6, r7), "7f863840 cmpl r6, r7");
#endif
#if V8_TARGET_ARCH_PPC64
COMPARE(cmp(r5, r11), "7fa55800 cmp r5, r11");
#else
COMPARE(cmp(r5, r11), "7f855800 cmp r5, r11");
#endif
// skipping crxor - incomplete disassembly
COMPARE(lbz(r4, MemOperand(r4, 7)), "88840007 lbz r4, 7(r4)");
COMPARE(lfd(d0, MemOperand(sp, 128)), "c8010080 lfd d0, 128(sp)");
COMPARE(li(r0, Operand(16)), "38000010 li r0, 16");
COMPARE(lis(r8, Operand(22560)), "3d005820 lis r8, 22560");
COMPARE(lwz(ip, MemOperand(r19, 44)), "8193002c lwz ip, 44(r19)");
COMPARE(lwzx(r0, MemOperand(r5, ip)), "7c05602e lwzx r0, r5, ip");
COMPARE(mflr(r0), "7c0802a6 mflr r0");
COMPARE(mr(r15, r4), "7c8f2378 mr r15, r4");
COMPARE(mtctr(r0), "7c0903a6 mtctr r0");
COMPARE(mtlr(r15), "7de803a6 mtlr r15");
COMPARE(ori(r8, r8, Operand(42849)), "6108a761 ori r8, r8, 42849");
COMPARE(orx(r5, r3, r4), "7c652378 or r5, r3, r4");
COMPARE(rlwinm(r4, r3, 2, 0, 29), "5464103a rlwinm r4, r3, 2, 0, 29");
COMPARE(rlwinm(r0, r3, 0, 31, 31, SetRC),
"546007ff rlwinm. r0, r3, 0, 31, 31");
COMPARE(srawi(r3, r6, 1), "7cc30e70 srawi r3,r6,1");
COMPARE(stb(r5, MemOperand(r11, 11)), "98ab000b stb r5, 11(r11)");
COMPARE(stfd(d2, MemOperand(sp, 8)), "d8410008 stfd d2, 8(sp)");
COMPARE(stw(r16, MemOperand(sp, 64)), "92010040 stw r16, 64(sp)");
COMPARE(stwu(r3, MemOperand(sp, -4)), "9461fffc stwu r3, -4(sp)");
COMPARE(sub(r3, r3, r4), "7c641850 subf r3, r4, r3");
COMPARE(sub(r0, r9, r8, LeaveOE, SetRC), "7c084851 subf. r0, r8, r9");
COMPARE(xor_(r6, r5, r4), "7ca62278 xor r6, r5, r4");
VERIFY_RUN();
}
} // namespace internal
} // namespace v8
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