Clean up multi byte nop support on x64 to more closely match IA32.
Fix missing instruction in disassembler. Fix wrong disassembly of multi-byte NOP on x64 Add test of disassembler on 64 bit! Review URL: http://codereview.chromium.org/8773039 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10147 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
erik.corry@gmail.com
parent
5ae1ddd786
commit
b8691a78af
@ -426,13 +426,7 @@ void Assembler::GetCode(CodeDesc* desc) {
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void Assembler::Align(int m) {
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ASSERT(IsPowerOf2(m));
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int delta = (m - (pc_offset() & (m - 1))) & (m - 1);
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while (delta >= 9) {
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nop(9);
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delta -= 9;
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}
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if (delta > 0) {
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nop(delta);
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}
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Nop(delta);
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}
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@ -441,6 +435,15 @@ void Assembler::CodeTargetAlign() {
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}
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bool Assembler::IsNop(Address addr) {
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Address a = addr;
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while (*a == 0x66) a++;
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if (*a == 0x90) return true;
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if (a[0] == 0xf && a[1] == 0x1f) return true;
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return false;
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}
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void Assembler::bind_to(Label* L, int pos) {
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ASSERT(!L->is_bound()); // Label may only be bound once.
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ASSERT(0 <= pos && pos <= pc_offset()); // Position must be valid.
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@ -1763,7 +1766,7 @@ void Assembler::notl(Register dst) {
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}
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void Assembler::nop(int n) {
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void Assembler::Nop(int n) {
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// The recommended muti-byte sequences of NOP instructions from the Intel 64
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// and IA-32 Architectures Software Developer's Manual.
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//
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@ -1778,73 +1781,64 @@ void Assembler::nop(int n) {
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// 9 bytes 66 NOP DWORD ptr [EAX + EAX*1 + 66 0F 1F 84 00 00 00 00
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// 00000000H] 00H
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ASSERT(1 <= n);
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ASSERT(n <= 9);
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EnsureSpace ensure_space(this);
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switch (n) {
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case 1:
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emit(0x90);
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return;
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case 2:
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emit(0x66);
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emit(0x90);
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return;
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case 3:
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emit(0x0f);
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emit(0x1f);
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emit(0x00);
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return;
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case 4:
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emit(0x0f);
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emit(0x1f);
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emit(0x40);
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emit(0x00);
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return;
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case 5:
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emit(0x0f);
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emit(0x1f);
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emit(0x44);
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emit(0x00);
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emit(0x00);
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return;
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case 6:
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emit(0x66);
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emit(0x0f);
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emit(0x1f);
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emit(0x44);
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emit(0x00);
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emit(0x00);
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return;
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case 7:
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emit(0x0f);
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emit(0x1f);
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emit(0x80);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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return;
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case 8:
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emit(0x0f);
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emit(0x1f);
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emit(0x84);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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return;
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case 9:
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emit(0x66);
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emit(0x0f);
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emit(0x1f);
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emit(0x84);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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return;
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while (n > 0) {
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switch (n) {
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case 2:
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emit(0x66);
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case 1:
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emit(0x90);
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return;
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case 3:
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emit(0x0f);
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emit(0x1f);
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emit(0x00);
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return;
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case 4:
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emit(0x0f);
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emit(0x1f);
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emit(0x40);
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emit(0x00);
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return;
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case 6:
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emit(0x66);
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case 5:
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emit(0x0f);
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emit(0x1f);
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emit(0x44);
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emit(0x00);
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emit(0x00);
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return;
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case 7:
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emit(0x0f);
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emit(0x1f);
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emit(0x80);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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return;
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default:
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case 11:
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emit(0x66);
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n--;
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case 10:
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emit(0x66);
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n--;
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case 9:
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emit(0x66);
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n--;
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case 8:
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emit(0x0f);
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emit(0x1f);
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emit(0x84);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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emit(0x00);
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n -= 8;
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}
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}
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}
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@ -636,6 +636,7 @@ class Assembler : public AssemblerBase {
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// possible to align the pc offset to a multiple
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// of m, where m must be a power of 2.
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void Align(int m);
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void Nop(int bytes = 1);
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// Aligns code to something that's optimal for a jump target for the platform.
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void CodeTargetAlign();
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@ -1154,7 +1155,6 @@ class Assembler : public AssemblerBase {
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void hlt();
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void int3();
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void nop();
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void nop(int n);
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void rdtsc();
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void ret(int imm16);
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void setcc(Condition cc, Register reg);
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@ -1398,7 +1398,7 @@ class Assembler : public AssemblerBase {
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return static_cast<int>(reloc_info_writer.pos() - pc_);
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}
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static bool IsNop(Address addr) { return *addr == 0x90; }
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static bool IsNop(Address addr);
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// Avoid overflows for displacements etc.
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static const int kMaximalBufferSize = 512*MB;
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@ -264,9 +264,7 @@ void Debug::GenerateSlot(MacroAssembler* masm) {
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Label check_codesize;
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__ bind(&check_codesize);
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__ RecordDebugBreakSlot();
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for (int i = 0; i < Assembler::kDebugBreakSlotLength; i++) {
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__ nop();
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}
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__ Nop(Assembler::kDebugBreakSlotLength);
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ASSERT_EQ(Assembler::kDebugBreakSlotLength,
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masm->SizeOfCodeGeneratedSince(&check_codesize));
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}
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@ -138,8 +138,8 @@ void Deoptimizer::PatchStackCheckCodeAt(Code* unoptimized_code,
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ASSERT(*(call_target_address - 3) == 0x73 && // jae
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*(call_target_address - 2) == 0x07 && // offset
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*(call_target_address - 1) == 0xe8); // call
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*(call_target_address - 3) = 0x90; // nop
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*(call_target_address - 2) = 0x90; // nop
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*(call_target_address - 3) = 0x66; // 2 byte nop part 1
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*(call_target_address - 2) = 0x90; // 2 byte nop part 2
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Assembler::set_target_address_at(call_target_address,
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replacement_code->entry());
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@ -157,8 +157,8 @@ void Deoptimizer::RevertStackCheckCodeAt(Code* unoptimized_code,
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Assembler::target_address_at(call_target_address));
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// Replace the nops from patching (Deoptimizer::PatchStackCheckCode) to
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// restore the conditional branch.
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ASSERT(*(call_target_address - 3) == 0x90 && // nop
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*(call_target_address - 2) == 0x90 && // nop
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ASSERT(*(call_target_address - 3) == 0x66 && // 2 byte nop part 1
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*(call_target_address - 2) == 0x90 && // 2 byte nop part 2
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*(call_target_address - 1) == 0xe8); // call
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*(call_target_address - 3) = 0x73; // jae
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*(call_target_address - 2) = 0x07; // offset
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@ -109,6 +109,7 @@ static const ByteMnemonic zero_operands_instr[] = {
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{ 0xC3, UNSET_OP_ORDER, "ret" },
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{ 0xC9, UNSET_OP_ORDER, "leave" },
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{ 0xF4, UNSET_OP_ORDER, "hlt" },
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{ 0xFC, UNSET_OP_ORDER, "cld" },
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{ 0xCC, UNSET_OP_ORDER, "int3" },
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{ 0x60, UNSET_OP_ORDER, "pushad" },
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{ 0x61, UNSET_OP_ORDER, "popad" },
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@ -1034,7 +1035,18 @@ int DisassemblerX64::TwoByteOpcodeInstruction(byte* data) {
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}
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} else {
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get_modrm(*current, &mod, ®op, &rm);
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if (opcode == 0x28) {
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if (opcode == 0x1f) {
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current++;
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if (rm == 4) { // SIB byte present.
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current++;
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}
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if (mod == 1) { // Byte displacement.
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current += 1;
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} else if (mod == 2) { // 32-bit displacement.
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current += 4;
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} // else no immediate displacement.
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AppendToBuffer("nop");
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} else if (opcode == 0x28) {
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AppendToBuffer("movapd %s, ", NameOfXMMRegister(regop));
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current += PrintRightXMMOperand(current);
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} else if (opcode == 0x29) {
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@ -1178,7 +1190,7 @@ int DisassemblerX64::TwoByteOpcodeInstruction(byte* data) {
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int mod, regop, rm;
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get_modrm(*current, &mod, ®op, &rm);
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current++;
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if (regop == 4) { // SIB byte present.
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if (rm == 4) { // SIB byte present.
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current++;
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}
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if (mod == 1) { // Byte displacement.
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@ -4201,11 +4201,7 @@ void LCodeGen::EnsureSpaceForLazyDeopt(int space_needed) {
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int current_pc = masm()->pc_offset();
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if (current_pc < last_lazy_deopt_pc_ + space_needed) {
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int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
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while (padding_size > 0) {
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int nop_size = padding_size > 9 ? 9 : padding_size;
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__ nop(nop_size);
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padding_size -= nop_size;
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}
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__ Nop(padding_size);
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}
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}
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@ -110,7 +110,8 @@ SOURCES = {
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],
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'arch:x64': ['test-assembler-x64.cc',
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'test-macro-assembler-x64.cc',
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'test-log-stack-tracer.cc'],
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'test-log-stack-tracer.cc',
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'test-disasm-x64.cc'],
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'arch:mips': ['test-assembler-mips.cc',
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'test-disasm-mips.cc'],
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'os:linux': ['test-platform-linux.cc'],
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@ -36,6 +36,7 @@
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#include "cctest.h"
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using v8::internal::Assembler;
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using v8::internal::Code;
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using v8::internal::CodeDesc;
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using v8::internal::FUNCTION_CAST;
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using v8::internal::Immediate;
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@ -53,6 +54,7 @@ using v8::internal::r15;
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using v8::internal::r8;
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using v8::internal::r9;
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using v8::internal::rax;
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using v8::internal::rbx;
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using v8::internal::rbp;
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using v8::internal::rcx;
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using v8::internal::rdi;
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@ -86,6 +88,16 @@ static const v8::internal::Register arg2 = rsi;
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#define __ assm.
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static v8::Persistent<v8::Context> env;
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static void InitializeVM() {
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if (env.IsEmpty()) {
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env = v8::Context::New();
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}
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}
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TEST(AssemblerX64ReturnOperation) {
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OS::Setup();
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// Allocate an executable page of memory.
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@ -359,4 +371,73 @@ TEST(AssemblerX64LabelChaining) {
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__ nop();
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}
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TEST(AssemblerMultiByteNop) {
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InitializeVM();
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v8::HandleScope scope;
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v8::internal::byte buffer[1024];
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Assembler assm(Isolate::Current(), buffer, sizeof(buffer));
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__ push(rbx);
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__ push(rcx);
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__ push(rdx);
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__ push(rdi);
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__ push(rsi);
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__ movq(rax, Immediate(1));
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__ movq(rbx, Immediate(2));
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__ movq(rcx, Immediate(3));
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__ movq(rdx, Immediate(4));
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__ movq(rdi, Immediate(5));
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__ movq(rsi, Immediate(6));
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for (int i = 0; i < 16; i++) {
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int before = assm.pc_offset();
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__ Nop(i);
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CHECK_EQ(assm.pc_offset() - before, i);
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}
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Label fail;
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__ cmpq(rax, Immediate(1));
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__ j(not_equal, &fail);
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__ cmpq(rbx, Immediate(2));
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__ j(not_equal, &fail);
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__ cmpq(rcx, Immediate(3));
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__ j(not_equal, &fail);
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__ cmpq(rdx, Immediate(4));
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__ j(not_equal, &fail);
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__ cmpq(rdi, Immediate(5));
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__ j(not_equal, &fail);
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__ cmpq(rsi, Immediate(6));
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__ j(not_equal, &fail);
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__ movq(rax, Immediate(42));
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__ pop(rsi);
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__ pop(rdi);
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__ pop(rdx);
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__ pop(rcx);
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__ pop(rbx);
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__ ret(0);
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__ bind(&fail);
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__ movq(rax, Immediate(13));
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__ pop(rsi);
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__ pop(rdi);
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__ pop(rdx);
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__ pop(rcx);
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__ pop(rbx);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Code* code = Code::cast(HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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v8::internal::Handle<v8::internal::Object>(
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HEAP->undefined_value()))->ToObjectChecked());
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CHECK(code->IsCode());
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F0 f = FUNCTION_CAST<F0>(code->entry());
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int res = f();
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CHECK_EQ(42, res);
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}
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#undef __
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429
test/cctest/test-disasm-x64.cc
Normal file
429
test/cctest/test-disasm-x64.cc
Normal file
@ -0,0 +1,429 @@
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// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
|
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// copyright notice, this list of conditions and the following
|
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// disclaimer in the documentation and/or other materials provided
|
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
|
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include "v8.h"
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#include "debug.h"
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#include "disasm.h"
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#include "disassembler.h"
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#include "macro-assembler.h"
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#include "serialize.h"
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#include "cctest.h"
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using namespace v8::internal;
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static v8::Persistent<v8::Context> env;
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static void InitializeVM() {
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if (env.IsEmpty()) {
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env = v8::Context::New();
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}
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}
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#define __ assm.
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static void DummyStaticFunction(Object* result) {
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}
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TEST(DisasmX64) {
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InitializeVM();
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v8::HandleScope scope;
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v8::internal::byte buffer[2048];
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Assembler assm(Isolate::Current(), buffer, sizeof buffer);
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DummyStaticFunction(NULL); // just bloody use it (DELETE; debugging)
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// Short immediate instructions
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__ addq(rax, Immediate(12345678));
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__ or_(rax, Immediate(12345678));
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__ subq(rax, Immediate(12345678));
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__ xor_(rax, Immediate(12345678));
|
||||
__ and_(rax, Immediate(12345678));
|
||||
|
||||
// ---- This one caused crash
|
||||
__ movq(rbx, Operand(rsp, rcx, times_2, 0)); // [rsp+rcx*4]
|
||||
|
||||
// ---- All instructions that I can think of
|
||||
__ addq(rdx, rbx);
|
||||
__ addq(rdx, Operand(rbx, 0));
|
||||
__ addq(rdx, Operand(rbx, 16));
|
||||
__ addq(rdx, Operand(rbx, 1999));
|
||||
__ addq(rdx, Operand(rsp, 0));
|
||||
__ addq(rdx, Operand(rsp, 16));
|
||||
__ addq(rdx, Operand(rsp, 1999));
|
||||
__ nop();
|
||||
__ addq(rdi, Operand(rbp, rcx, times_4, 0));
|
||||
__ addq(rdi, Operand(rbp, rcx, times_4, 12));
|
||||
__ addq(Operand(rbp, rcx, times_4, 12), Immediate(12));
|
||||
|
||||
__ nop();
|
||||
__ addq(rbx, Immediate(12));
|
||||
__ nop();
|
||||
__ nop();
|
||||
__ and_(rdx, Immediate(3));
|
||||
__ and_(rdx, Operand(rsp, 4));
|
||||
__ cmpq(rdx, Immediate(3));
|
||||
__ cmpq(rdx, Operand(rsp, 4));
|
||||
__ cmpq(Operand(rbp, rcx, times_4, 0), Immediate(1000));
|
||||
__ cmpb(rbx, Operand(rbp, rcx, times_2, 0));
|
||||
__ cmpb(Operand(rbp, rcx, times_2, 0), rbx);
|
||||
__ or_(rdx, Immediate(3));
|
||||
__ xor_(rdx, Immediate(3));
|
||||
__ nop();
|
||||
{
|
||||
CHECK(CpuFeatures::IsSupported(CPUID));
|
||||
CpuFeatures::Scope fscope(CPUID);
|
||||
__ cpuid();
|
||||
}
|
||||
{
|
||||
CHECK(CpuFeatures::IsSupported(RDTSC));
|
||||
CpuFeatures::Scope fscope(RDTSC);
|
||||
__ rdtsc();
|
||||
}
|
||||
__ movsxbq(rdx, Operand(rcx, 0));
|
||||
__ movsxwq(rdx, Operand(rcx, 0));
|
||||
__ movzxbl(rdx, Operand(rcx, 0));
|
||||
__ movzxwl(rdx, Operand(rcx, 0));
|
||||
__ movzxbq(rdx, Operand(rcx, 0));
|
||||
__ movzxwq(rdx, Operand(rcx, 0));
|
||||
|
||||
__ nop();
|
||||
__ imul(rdx, rcx);
|
||||
__ shld(rdx, rcx);
|
||||
__ shrd(rdx, rcx);
|
||||
__ bts(Operand(rdx, 0), rcx);
|
||||
__ bts(Operand(rbx, rcx, times_4, 0), rcx);
|
||||
__ nop();
|
||||
__ push(Immediate(12));
|
||||
__ push(Immediate(23456));
|
||||
__ push(rcx);
|
||||
__ push(rsi);
|
||||
__ push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
|
||||
__ push(Operand(rbx, rcx, times_4, 0));
|
||||
__ push(Operand(rbx, rcx, times_4, 0));
|
||||
__ push(Operand(rbx, rcx, times_4, 10000));
|
||||
__ pop(rdx);
|
||||
__ pop(rax);
|
||||
__ pop(Operand(rbx, rcx, times_4, 0));
|
||||
__ nop();
|
||||
|
||||
__ addq(rdx, Operand(rsp, 16));
|
||||
__ addq(rdx, rcx);
|
||||
__ movb(rdx, Operand(rcx, 0));
|
||||
__ movb(rcx, Immediate(6));
|
||||
__ movb(Operand(rsp, 16), rdx);
|
||||
__ movw(Operand(rsp, 16), rdx);
|
||||
__ nop();
|
||||
__ movsxwq(rdx, Operand(rsp, 12));
|
||||
__ movsxbq(rdx, Operand(rsp, 12));
|
||||
__ movsxlq(rdx, Operand(rsp, 12));
|
||||
__ movzxwq(rdx, Operand(rsp, 12));
|
||||
__ movzxbq(rdx, Operand(rsp, 12));
|
||||
__ nop();
|
||||
__ movq(rdx, Immediate(1234567));
|
||||
__ movq(rdx, Operand(rsp, 12));
|
||||
__ movq(Operand(rbx, rcx, times_4, 10000), Immediate(12345));
|
||||
__ movq(Operand(rbx, rcx, times_4, 10000), rdx);
|
||||
__ nop();
|
||||
__ decb(rdx);
|
||||
__ decb(Operand(rax, 10));
|
||||
__ decb(Operand(rbx, rcx, times_4, 10000));
|
||||
__ decq(rdx);
|
||||
__ cdq();
|
||||
|
||||
__ nop();
|
||||
__ idivq(rdx);
|
||||
__ mul(rdx);
|
||||
__ neg(rdx);
|
||||
__ not_(rdx);
|
||||
__ testq(Operand(rbx, rcx, times_4, 10000), rdx);
|
||||
|
||||
__ imul(rdx, Operand(rbx, rcx, times_4, 10000));
|
||||
__ imul(rdx, rcx, Immediate(12));
|
||||
__ imul(rdx, rcx, Immediate(1000));
|
||||
|
||||
__ incq(rdx);
|
||||
__ incq(Operand(rbx, rcx, times_4, 10000));
|
||||
__ push(Operand(rbx, rcx, times_4, 10000));
|
||||
__ pop(Operand(rbx, rcx, times_4, 10000));
|
||||
__ jmp(Operand(rbx, rcx, times_4, 10000));
|
||||
|
||||
__ lea(rdx, Operand(rbx, rcx, times_4, 10000));
|
||||
__ or_(rdx, Immediate(12345));
|
||||
__ or_(rdx, Operand(rbx, rcx, times_4, 10000));
|
||||
|
||||
__ nop();
|
||||
|
||||
__ rcl(rdx, Immediate(1));
|
||||
__ rcl(rdx, Immediate(7));
|
||||
__ rcr(rdx, Immediate(1));
|
||||
__ rcr(rdx, Immediate(7));
|
||||
__ sar(rdx, Immediate(1));
|
||||
__ sar(rdx, Immediate(6));
|
||||
__ sar_cl(rdx);
|
||||
__ sbbq(rdx, rbx);
|
||||
__ shld(rdx, rbx);
|
||||
__ shl(rdx, Immediate(1));
|
||||
__ shl(rdx, Immediate(6));
|
||||
__ shl_cl(rdx);
|
||||
__ shrd(rdx, rbx);
|
||||
__ shr(rdx, Immediate(1));
|
||||
__ shr(rdx, Immediate(7));
|
||||
__ shr_cl(rdx);
|
||||
|
||||
|
||||
// Immediates
|
||||
|
||||
__ addq(rbx, Immediate(12));
|
||||
__ addq(Operand(rdx, rcx, times_4, 10000), Immediate(12));
|
||||
|
||||
__ and_(rbx, Immediate(12345));
|
||||
|
||||
__ cmpq(rbx, Immediate(12345));
|
||||
__ cmpq(rbx, Immediate(12));
|
||||
__ cmpq(Operand(rdx, rcx, times_4, 10000), Immediate(12));
|
||||
__ cmpb(rax, Immediate(100));
|
||||
|
||||
__ or_(rbx, Immediate(12345));
|
||||
|
||||
__ subq(rbx, Immediate(12));
|
||||
__ subq(Operand(rdx, rcx, times_4, 10000), Immediate(12));
|
||||
|
||||
__ xor_(rbx, Immediate(12345));
|
||||
|
||||
__ imul(rdx, rcx, Immediate(12));
|
||||
__ imul(rdx, rcx, Immediate(1000));
|
||||
|
||||
__ cld();
|
||||
|
||||
__ subq(rdx, Operand(rbx, rcx, times_4, 10000));
|
||||
__ subq(rdx, rbx);
|
||||
|
||||
__ testq(rdx, Immediate(12345));
|
||||
__ testq(Operand(rbx, rcx, times_8, 10000), rdx);
|
||||
__ testb(Operand(rcx, rbx, times_2, 1000), rdx);
|
||||
__ testb(Operand(rax, -20), Immediate(0x9A));
|
||||
__ nop();
|
||||
|
||||
__ xor_(rdx, Immediate(12345));
|
||||
__ xor_(rdx, Operand(rbx, rcx, times_8, 10000));
|
||||
__ bts(Operand(rbx, rcx, times_8, 10000), rdx);
|
||||
__ hlt();
|
||||
__ int3();
|
||||
__ ret(0);
|
||||
__ ret(8);
|
||||
|
||||
// Calls
|
||||
|
||||
Label L1, L2;
|
||||
__ bind(&L1);
|
||||
__ nop();
|
||||
__ call(&L1);
|
||||
__ call(&L2);
|
||||
__ nop();
|
||||
__ bind(&L2);
|
||||
__ call(Operand(rbx, rcx, times_4, 10000));
|
||||
__ nop();
|
||||
Handle<Code> ic(Isolate::Current()->builtins()->builtin(
|
||||
Builtins::kLoadIC_Initialize));
|
||||
__ call(ic, RelocInfo::CODE_TARGET);
|
||||
__ nop();
|
||||
__ nop();
|
||||
|
||||
__ jmp(&L1);
|
||||
__ jmp(Operand(rbx, rcx, times_4, 10000));
|
||||
#ifdef ENABLE_DEBUGGER_SUPPORT
|
||||
ExternalReference after_break_target =
|
||||
ExternalReference(Debug_Address::AfterBreakTarget(),
|
||||
assm.isolate());
|
||||
#endif // ENABLE_DEBUGGER_SUPPORT
|
||||
__ jmp(ic, RelocInfo::CODE_TARGET);
|
||||
__ nop();
|
||||
|
||||
|
||||
Label Ljcc;
|
||||
__ nop();
|
||||
// long jumps
|
||||
__ j(overflow, &Ljcc);
|
||||
__ j(no_overflow, &Ljcc);
|
||||
__ j(below, &Ljcc);
|
||||
__ j(above_equal, &Ljcc);
|
||||
__ j(equal, &Ljcc);
|
||||
__ j(not_equal, &Ljcc);
|
||||
__ j(below_equal, &Ljcc);
|
||||
__ j(above, &Ljcc);
|
||||
__ j(sign, &Ljcc);
|
||||
__ j(not_sign, &Ljcc);
|
||||
__ j(parity_even, &Ljcc);
|
||||
__ j(parity_odd, &Ljcc);
|
||||
__ j(less, &Ljcc);
|
||||
__ j(greater_equal, &Ljcc);
|
||||
__ j(less_equal, &Ljcc);
|
||||
__ j(greater, &Ljcc);
|
||||
__ nop();
|
||||
__ bind(&Ljcc);
|
||||
// short jumps
|
||||
__ j(overflow, &Ljcc);
|
||||
__ j(no_overflow, &Ljcc);
|
||||
__ j(below, &Ljcc);
|
||||
__ j(above_equal, &Ljcc);
|
||||
__ j(equal, &Ljcc);
|
||||
__ j(not_equal, &Ljcc);
|
||||
__ j(below_equal, &Ljcc);
|
||||
__ j(above, &Ljcc);
|
||||
__ j(sign, &Ljcc);
|
||||
__ j(not_sign, &Ljcc);
|
||||
__ j(parity_even, &Ljcc);
|
||||
__ j(parity_odd, &Ljcc);
|
||||
__ j(less, &Ljcc);
|
||||
__ j(greater_equal, &Ljcc);
|
||||
__ j(less_equal, &Ljcc);
|
||||
__ j(greater, &Ljcc);
|
||||
|
||||
// 0xD9 instructions
|
||||
__ nop();
|
||||
|
||||
__ fld(1);
|
||||
__ fld1();
|
||||
__ fldz();
|
||||
__ fldpi();
|
||||
__ fabs();
|
||||
__ fchs();
|
||||
__ fprem();
|
||||
__ fprem1();
|
||||
__ fincstp();
|
||||
__ ftst();
|
||||
__ fxch(3);
|
||||
__ fld_s(Operand(rbx, rcx, times_4, 10000));
|
||||
__ fstp_s(Operand(rbx, rcx, times_4, 10000));
|
||||
__ ffree(3);
|
||||
__ fld_d(Operand(rbx, rcx, times_4, 10000));
|
||||
__ fstp_d(Operand(rbx, rcx, times_4, 10000));
|
||||
__ nop();
|
||||
|
||||
__ fild_s(Operand(rbx, rcx, times_4, 10000));
|
||||
__ fistp_s(Operand(rbx, rcx, times_4, 10000));
|
||||
__ fild_d(Operand(rbx, rcx, times_4, 10000));
|
||||
__ fistp_d(Operand(rbx, rcx, times_4, 10000));
|
||||
__ fnstsw_ax();
|
||||
__ nop();
|
||||
__ fadd(3);
|
||||
__ fsub(3);
|
||||
__ fmul(3);
|
||||
__ fdiv(3);
|
||||
|
||||
__ faddp(3);
|
||||
__ fsubp(3);
|
||||
__ fmulp(3);
|
||||
__ fdivp(3);
|
||||
__ fcompp();
|
||||
__ fwait();
|
||||
__ nop();
|
||||
{
|
||||
if (CpuFeatures::IsSupported(SSE2)) {
|
||||
CpuFeatures::Scope fscope(SSE2);
|
||||
__ cvttss2si(rdx, Operand(rbx, rcx, times_4, 10000));
|
||||
__ cvttss2si(rdx, xmm1);
|
||||
__ cvttsd2si(rdx, Operand(rbx, rcx, times_4, 10000));
|
||||
__ cvttsd2si(rdx, xmm1);
|
||||
__ cvttsd2siq(rdx, xmm1);
|
||||
__ addsd(xmm1, xmm0);
|
||||
__ mulsd(xmm1, xmm0);
|
||||
__ subsd(xmm1, xmm0);
|
||||
__ divsd(xmm1, xmm0);
|
||||
__ movsd(xmm1, Operand(rbx, rcx, times_4, 10000));
|
||||
__ movsd(Operand(rbx, rcx, times_4, 10000), xmm1);
|
||||
__ ucomisd(xmm0, xmm1);
|
||||
|
||||
// 128 bit move instructions.
|
||||
__ movdqa(xmm0, Operand(rbx, rcx, times_4, 10000));
|
||||
__ movdqa(Operand(rbx, rcx, times_4, 10000), xmm0);
|
||||
}
|
||||
}
|
||||
|
||||
// cmov.
|
||||
{
|
||||
if (CpuFeatures::IsSupported(CMOV)) {
|
||||
CpuFeatures::Scope use_cmov(CMOV);
|
||||
__ cmovq(overflow, rax, Operand(rax, 0));
|
||||
__ cmovq(no_overflow, rax, Operand(rax, 1));
|
||||
__ cmovq(below, rax, Operand(rax, 2));
|
||||
__ cmovq(above_equal, rax, Operand(rax, 3));
|
||||
__ cmovq(equal, rax, Operand(rbx, 0));
|
||||
__ cmovq(not_equal, rax, Operand(rbx, 1));
|
||||
__ cmovq(below_equal, rax, Operand(rbx, 2));
|
||||
__ cmovq(above, rax, Operand(rbx, 3));
|
||||
__ cmovq(sign, rax, Operand(rcx, 0));
|
||||
__ cmovq(not_sign, rax, Operand(rcx, 1));
|
||||
__ cmovq(parity_even, rax, Operand(rcx, 2));
|
||||
__ cmovq(parity_odd, rax, Operand(rcx, 3));
|
||||
__ cmovq(less, rax, Operand(rdx, 0));
|
||||
__ cmovq(greater_equal, rax, Operand(rdx, 1));
|
||||
__ cmovq(less_equal, rax, Operand(rdx, 2));
|
||||
__ cmovq(greater, rax, Operand(rdx, 3));
|
||||
}
|
||||
}
|
||||
|
||||
// andpd, etc.
|
||||
{
|
||||
if (CpuFeatures::IsSupported(SSE2)) {
|
||||
CpuFeatures::Scope fscope(SSE2);
|
||||
__ andpd(xmm0, xmm1);
|
||||
__ andpd(xmm1, xmm2);
|
||||
|
||||
__ movaps(xmm0, xmm1);
|
||||
__ movaps(xmm1, xmm2);
|
||||
}
|
||||
}
|
||||
|
||||
// Nop instructions
|
||||
for (int i = 0; i < 16; i++) {
|
||||
__ Nop(i);
|
||||
}
|
||||
|
||||
__ ret(0);
|
||||
|
||||
CodeDesc desc;
|
||||
assm.GetCode(&desc);
|
||||
Object* code = HEAP->CreateCode(
|
||||
desc,
|
||||
Code::ComputeFlags(Code::STUB),
|
||||
Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
|
||||
CHECK(code->IsCode());
|
||||
#ifdef OBJECT_PRINT
|
||||
Code::cast(code)->Print();
|
||||
byte* begin = Code::cast(code)->instruction_start();
|
||||
byte* end = begin + Code::cast(code)->instruction_size();
|
||||
disasm::Disassembler::Disassemble(stdout, begin, end);
|
||||
#endif
|
||||
}
|
||||
|
||||
#undef __
|
||||
Loading…
Reference in New Issue
Block a user