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comparison src/cpu/x86/vm/assembler_x86.cpp @ 16047:692c25719837

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Bugfix: Prefix byte missing for AMD64 byte instructions
author Christian Wimmer <christian.wimmer@oracle.com>
date Thu, 05 Jun 2014 15:37:57 -0700
parents d49f00604347
children 03eda0a202e9
comparison
equal deleted inserted replaced
16046:942e4b7712e1 16047:692c25719837
4565 int Assembler::prefix_and_encode(int dst_enc, int src_enc, bool byteinst) { 4565 int Assembler::prefix_and_encode(int dst_enc, int src_enc, bool byteinst) {
4566 if (dst_enc < 8) { 4566 if (dst_enc < 8) {
4567 if (src_enc >= 8) { 4567 if (src_enc >= 8) {
4568 prefix(REX_B); 4568 prefix(REX_B);
4569 src_enc -= 8; 4569 src_enc -= 8;
4570 } else if (byteinst && src_enc >= 4) { 4570 } else if (byteinst && (src_enc >= 4 || dst_enc >= 4)) {
4571 prefix(REX); 4571 prefix(REX);
4572 } 4572 }
4573 } else { 4573 } else {
4574 if (src_enc < 8) { 4574 if (src_enc < 8) {
4575 prefix(REX_R); 4575 prefix(REX_R);