4284 }
4285 
4286 #ifdef _LP64
4287 // scans rcx 4 byte words at [edi] for occurance of rax,
4288 // generic
4289 void Assembler::repne_scanl() { // repne_scan
4290   // SCASL
4291   emit_int16((unsigned char)0xF2, (unsigned char)0xAF);
4292 }
4293 #endif
4294 
4295 void Assembler::ret(int imm16) {
4296   if (imm16 == 0) {
4297     emit_int8((unsigned char)0xC3);
4298   } else {
4299     emit_int8((unsigned char)0xC2);
4300     emit_int16(imm16);
4301   }
4302 }
4303 










4304 void Assembler::sahf() {
4305 #ifdef _LP64
4306   // Not supported in 64bit mode
4307   ShouldNotReachHere();
4308 #endif
4309   emit_int8((unsigned char)0x9E);
4310 }
4311 
4312 void Assembler::sarl(Register dst, int imm8) {
4313   int encode = prefix_and_encode(dst->encoding());
4314   assert(isShiftCount(imm8), "illegal shift count");
4315   if (imm8 == 1) {
4316     emit_int16((unsigned char)0xD1, (0xF8 | encode));
4317   } else {
4318     emit_int24((unsigned char)0xC1, (0xF8 | encode), imm8);
4319   }
4320 }
4321 
4322 void Assembler::sarl(Register dst) {
4323   int encode = prefix_and_encode(dst->encoding());

4284 }
4285 
4286 #ifdef _LP64
4287 // scans rcx 4 byte words at [edi] for occurance of rax,
4288 // generic
4289 void Assembler::repne_scanl() { // repne_scan
4290   // SCASL
4291   emit_int16((unsigned char)0xF2, (unsigned char)0xAF);
4292 }
4293 #endif
4294 
4295 void Assembler::ret(int imm16) {
4296   if (imm16 == 0) {
4297     emit_int8((unsigned char)0xC3);
4298   } else {
4299     emit_int8((unsigned char)0xC2);
4300     emit_int16(imm16);
4301   }
4302 }
4303 
4304 void Assembler::roll(Register dst, int imm8) {
4305   assert(isShiftCount(imm8 >> 1), "illegal shift count");
4306   int encode = prefix_and_encode(dst->encoding());
4307   if (imm8 == 1) {
4308     emit_int16((unsigned char)0xD1, (0xC0 | encode));
4309   } else {
4310     emit_int24((unsigned char)0xC1, (0xc0 | encode), imm8);
4311   }
4312 }
4313 
4314 void Assembler::sahf() {
4315 #ifdef _LP64
4316   // Not supported in 64bit mode
4317   ShouldNotReachHere();
4318 #endif
4319   emit_int8((unsigned char)0x9E);
4320 }
4321 
4322 void Assembler::sarl(Register dst, int imm8) {
4323   int encode = prefix_and_encode(dst->encoding());
4324   assert(isShiftCount(imm8), "illegal shift count");
4325   if (imm8 == 1) {
4326     emit_int16((unsigned char)0xD1, (0xF8 | encode));
4327   } else {
4328     emit_int24((unsigned char)0xC1, (0xF8 | encode), imm8);
4329   }
4330 }
4331 
4332 void Assembler::sarl(Register dst) {
4333   int encode = prefix_and_encode(dst->encoding());