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-rw-r--r--target-i386/op.c90
1 files changed, 22 insertions, 68 deletions
diff --git a/target-i386/op.c b/target-i386/op.c
index c157b120b0..2af4e8eb37 100644
--- a/target-i386/op.c
+++ b/target-i386/op.c
@@ -1952,94 +1952,48 @@ void OPPROTO op_fxchg_ST0_STN(void)
/* FPU operations */
+const int fcom_ccval[4] = {0x0100, 0x4000, 0x0000, 0x4500};
+
void OPPROTO op_fcom_ST0_FT0(void)
{
- int cc;
- switch(floatx_compare(ST0, FT0, &env->fp_status)) {
- case -1:
- cc = 0x0100;
- break;
- case 0:
- cc = 0x4000;
- break;
- case 1:
- cc = 0x0000;
- break;
- case 2:
- default:
- cc = 0x4500;
- break;
- }
- env->fpus = (env->fpus & ~0x4500) | cc;
+ int ret;
+
+ ret = floatx_compare(ST0, FT0, &env->fp_status);
+ env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret + 1];
FORCE_RET();
}
void OPPROTO op_fucom_ST0_FT0(void)
{
- int cc;
- switch(floatx_compare_quiet(ST0, FT0, &env->fp_status)) {
- case -1:
- cc = 0x0100;
- break;
- case 0:
- cc = 0x4000;
- break;
- case 1:
- cc = 0x0000;
- break;
- case 2:
- default:
- cc = 0x4500;
- break;
- }
- env->fpus = (env->fpus & ~0x4500) | cc;
+ int ret;
+
+ ret = floatx_compare_quiet(ST0, FT0, &env->fp_status);
+ env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret+ 1];
FORCE_RET();
}
+const int fcomi_ccval[4] = {CC_C, CC_Z, 0, CC_Z | CC_P | CC_C};
+
void OPPROTO op_fcomi_ST0_FT0(void)
{
- int eflags, cc;
- switch(floatx_compare(ST0, FT0, &env->fp_status)) {
- case -1:
- cc = CC_C;
- break;
- case 0:
- cc = CC_Z;
- break;
- case 1:
- cc = 0;
- break;
- case 2:
- default:
- cc = CC_Z | CC_P | CC_C;
- break;
- }
+ int eflags;
+ int ret;
+
+ ret = floatx_compare(ST0, FT0, &env->fp_status);
eflags = cc_table[CC_OP].compute_all();
- eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | cc;
+ eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
CC_SRC = eflags;
FORCE_RET();
}
void OPPROTO op_fucomi_ST0_FT0(void)
{
- int eflags, cc;
- switch(floatx_compare_quiet(ST0, FT0, &env->fp_status)) {
- case -1:
- cc = CC_C;
- break;
- case 0:
- cc = CC_Z;
- break;
- case 1:
- cc = 0;
- break;
- case 2:
- default:
- cc = CC_Z | CC_P | CC_C;
- break;
- }
+ int eflags;
+ int ret;
+
+ ret = floatx_compare_quiet(ST0, FT0, &env->fp_status);
eflags = cc_table[CC_OP].compute_all();
- eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | cc;
+ eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
CC_SRC = eflags;
FORCE_RET();
}