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comparison src/cpu/x86/vm/assembler_x86.cpp @ 7424:c4bd2eccea46

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8004536: replace AbstractAssembler emit_word with emit_int16 Reviewed-by: jrose, kvn, twisti Contributed-by: Morris Meyer <morris.meyer@oracle.com>
author twisti
date Tue, 18 Dec 2012 10:47:23 -0800
parents cd3d6a6b95d9
children 2c7f594145dc
comparison
equal deleted inserted replaced
7423:620e502e3f47 7424:c4bd2eccea46
1227 InstructionMark im(this); 1227 InstructionMark im(this);
1228 assert(!dst.base_needs_rex() && !dst.index_needs_rex(), "no extended registers"); 1228 assert(!dst.base_needs_rex() && !dst.index_needs_rex(), "no extended registers");
1229 emit_byte(0x66); 1229 emit_byte(0x66);
1230 emit_byte(0x81); 1230 emit_byte(0x81);
1231 emit_operand(rdi, dst, 2); 1231 emit_operand(rdi, dst, 2);
1232 emit_word(imm16); 1232 emit_int16(imm16);
1233 } 1233 }
1234 1234
1235 // The 32-bit cmpxchg compares the value at adr with the contents of rax, 1235 // The 32-bit cmpxchg compares the value at adr with the contents of rax,
1236 // and stores reg into adr if so; otherwise, the value at adr is loaded into rax,. 1236 // and stores reg into adr if so; otherwise, the value at adr is loaded into rax,.
1237 // The ZF is set if the compared values were equal, and cleared otherwise. 1237 // The ZF is set if the compared values were equal, and cleared otherwise.
1877 1877
1878 emit_byte(0x66); // switch to 16-bit mode 1878 emit_byte(0x66); // switch to 16-bit mode
1879 prefix(dst); 1879 prefix(dst);
1880 emit_byte(0xC7); 1880 emit_byte(0xC7);
1881 emit_operand(rax, dst, 2); 1881 emit_operand(rax, dst, 2);
1882 emit_word(imm16); 1882 emit_int16(imm16);
1883 } 1883 }
1884 1884
1885 void Assembler::movw(Register dst, Address src) { 1885 void Assembler::movw(Register dst, Address src) {
1886 InstructionMark im(this); 1886 InstructionMark im(this);
1887 emit_byte(0x66); 1887 emit_byte(0x66);
2569 void Assembler::ret(int imm16) { 2569 void Assembler::ret(int imm16) {
2570 if (imm16 == 0) { 2570 if (imm16 == 0) {
2571 emit_byte(0xC3); 2571 emit_byte(0xC3);
2572 } else { 2572 } else {
2573 emit_byte(0xC2); 2573 emit_byte(0xC2);
2574 emit_word(imm16); 2574 emit_int16(imm16);
2575 } 2575 }
2576 } 2576 }
2577 2577
2578 void Assembler::sahf() { 2578 void Assembler::sahf() {
2579 #ifdef _LP64 2579 #ifdef _LP64