Mercurial > hg > truffle
diff src/cpu/x86/vm/assembler_x86.cpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed
author | kvn |
---|---|
date | Thu, 20 Mar 2014 17:49:27 -0700 |
parents | 8a8ff6b577ed |
children | eb6b3ac64f0e |
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--- a/src/cpu/x86/vm/assembler_x86.cpp Sat Mar 22 00:26:48 2014 +0400 +++ b/src/cpu/x86/vm/assembler_x86.cpp Thu Mar 20 17:49:27 2014 -0700 @@ -2343,6 +2343,11 @@ emit_int8(imm8); } +void Assembler::pause() { + emit_int8((unsigned char)0xF3); + emit_int8((unsigned char)0x90); +} + void Assembler::pcmpestri(XMMRegister dst, Address src, int imm8) { assert(VM_Version::supports_sse4_2(), ""); InstructionMark im(this); @@ -2667,6 +2672,11 @@ } } +void Assembler::rdtsc() { + emit_int8((unsigned char)0x0F); + emit_int8((unsigned char)0x31); +} + // copies data from [esi] to [edi] using rcx pointer sized words // generic void Assembler::rep_mov() { @@ -2976,6 +2986,11 @@ emit_simd_arith_nonds(0x2E, dst, src, VEX_SIMD_NONE); } +void Assembler::xabort(int8_t imm8) { + emit_int8((unsigned char)0xC6); + emit_int8((unsigned char)0xF8); + emit_int8((unsigned char)(imm8 & 0xFF)); +} void Assembler::xaddl(Address dst, Register src) { InstructionMark im(this); @@ -2985,6 +3000,24 @@ emit_operand(src, dst); } +void Assembler::xbegin(Label& abort, relocInfo::relocType rtype) { + InstructionMark im(this); + relocate(rtype); + if (abort.is_bound()) { + address entry = target(abort); + assert(entry != NULL, "abort entry NULL"); + intptr_t offset = entry - pc(); + emit_int8((unsigned char)0xC7); + emit_int8((unsigned char)0xF8); + emit_int32(offset - 6); // 2 opcode + 4 address + } else { + abort.add_patch_at(code(), locator()); + emit_int8((unsigned char)0xC7); + emit_int8((unsigned char)0xF8); + emit_int32(0); + } +} + void Assembler::xchgl(Register dst, Address src) { // xchg InstructionMark im(this); prefix(src, dst); @@ -2998,6 +3031,12 @@ emit_int8((unsigned char)(0xC0 | encode)); } +void Assembler::xend() { + emit_int8((unsigned char)0x0F); + emit_int8((unsigned char)0x01); + emit_int8((unsigned char)0xD5); +} + void Assembler::xgetbv() { emit_int8(0x0F); emit_int8(0x01);