5462 }
5463
5464 void Assembler::rcpps(XMMRegister dst, XMMRegister src) {
5465 NOT_LP64(assert(VM_Version::supports_sse(), ""));
5466 InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
5467 int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
5468 emit_int16(0x53, (0xC0 | encode));
5469 }
5470
5471 void Assembler::rcpss(XMMRegister dst, XMMRegister src) {
5472 NOT_LP64(assert(VM_Version::supports_sse(), ""));
5473 InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
5474 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
5475 emit_int16(0x53, (0xC0 | encode));
5476 }
5477
5478 void Assembler::rdtsc() {
5479 emit_int16(0x0F, 0x31);
5480 }
5481
5482 // copies data from [esi] to [edi] using rcx pointer sized words
5483 // generic
5484 void Assembler::rep_mov() {
5485 // REP
5486 // MOVSQ
5487 LP64_ONLY(emit_int24((unsigned char)0xF3, REX_W, (unsigned char)0xA5);)
5488 NOT_LP64( emit_int16((unsigned char)0xF3, (unsigned char)0xA5);)
5489 }
5490
5491 // sets rcx bytes with rax, value at [edi]
5492 void Assembler::rep_stosb() {
5493 // REP
5494 // STOSB
5495 LP64_ONLY(emit_int24((unsigned char)0xF3, REX_W, (unsigned char)0xAA);)
5496 NOT_LP64( emit_int16((unsigned char)0xF3, (unsigned char)0xAA);)
5497 }
5498
5499 // sets rcx pointer sized words with rax, value at [edi]
5500 // generic
5501 void Assembler::rep_stos() {
|
5462 }
5463
5464 void Assembler::rcpps(XMMRegister dst, XMMRegister src) {
5465 NOT_LP64(assert(VM_Version::supports_sse(), ""));
5466 InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
5467 int encode = simd_prefix_and_encode(dst, xnoreg, src, VEX_SIMD_NONE, VEX_OPCODE_0F, &attributes);
5468 emit_int16(0x53, (0xC0 | encode));
5469 }
5470
5471 void Assembler::rcpss(XMMRegister dst, XMMRegister src) {
5472 NOT_LP64(assert(VM_Version::supports_sse(), ""));
5473 InstructionAttr attributes(AVX_128bit, /* rex_w */ false, /* legacy_mode */ true, /* no_mask_reg */ true, /* uses_vl */ false);
5474 int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_F3, VEX_OPCODE_0F, &attributes);
5475 emit_int16(0x53, (0xC0 | encode));
5476 }
5477
5478 void Assembler::rdtsc() {
5479 emit_int16(0x0F, 0x31);
5480 }
5481
5482 void Assembler::rdtscp() {
5483 emit_int24(0x0F, 0x01, (unsigned char)0xF9);
5484 }
5485
5486 // copies data from [esi] to [edi] using rcx pointer sized words
5487 // generic
5488 void Assembler::rep_mov() {
5489 // REP
5490 // MOVSQ
5491 LP64_ONLY(emit_int24((unsigned char)0xF3, REX_W, (unsigned char)0xA5);)
5492 NOT_LP64( emit_int16((unsigned char)0xF3, (unsigned char)0xA5);)
5493 }
5494
5495 // sets rcx bytes with rax, value at [edi]
5496 void Assembler::rep_stosb() {
5497 // REP
5498 // STOSB
5499 LP64_ONLY(emit_int24((unsigned char)0xF3, REX_W, (unsigned char)0xAA);)
5500 NOT_LP64( emit_int16((unsigned char)0xF3, (unsigned char)0xAA);)
5501 }
5502
5503 // sets rcx pointer sized words with rax, value at [edi]
5504 // generic
5505 void Assembler::rep_stos() {
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