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target-i386: factor setting of s->cc_op handling for string functions

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Set it to the appropriate CC_OP_SUBx constant in gen_scas/gen_cmps.
In the repz case it can be overridden to CC_OP_DYNAMIC after generating
the code.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Paolo Bonzini 2012-10-06 01:22:09 +02:00 committed by Richard Henderson
parent d824df34e8
commit 91642ff806
1 changed files with 5 additions and 4 deletions
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9
target-i386/translate.c
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@ -1112,6 +1112,7 @@ static inline void gen_scas(DisasContext *s, int ot)
gen_op_cmpl_T0_T1_cc();
gen_op_movl_T0_Dshift(ot);
gen_op_add_reg_T0(s->aflag, R_EDI);
s->cc_op = CC_OP_SUBB + ot;
}
static inline void gen_cmps(DisasContext *s, int ot)
@ -1124,6 +1125,7 @@ static inline void gen_cmps(DisasContext *s, int ot)
gen_op_movl_T0_Dshift(ot);
gen_op_add_reg_T0(s->aflag, R_ESI);
gen_op_add_reg_T0(s->aflag, R_EDI);
s->cc_op = CC_OP_SUBB + ot;
}
static inline void gen_ins(DisasContext *s, int ot)
@ -1194,11 +1196,12 @@ static inline void gen_repz_ ## op(DisasContext *s, int ot, \
l2 = gen_jz_ecx_string(s, next_eip); \
gen_ ## op(s, ot); \
gen_op_add_reg_im(s->aflag, R_ECX, -1); \
gen_op_set_cc_op(CC_OP_SUBB + ot); \
gen_jcc1(s, CC_OP_SUBB + ot, (JCC_Z << 1) | (nz ^ 1), l2); \
gen_op_set_cc_op(s->cc_op); \
gen_jcc1(s, s->cc_op, (JCC_Z << 1) | (nz ^ 1), l2); \
if (!s->jmp_opt) \
gen_op_jz_ecx(s->aflag, l2); \
gen_jmp(s, cur_eip); \
s->cc_op = CC_OP_DYNAMIC; \
}
GEN_REPZ(movs)
@ -6088,7 +6091,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
gen_repz_scas(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 0);
} else {
gen_scas(s, ot);
s->cc_op = CC_OP_SUBB + ot;
}
break;
@ -6104,7 +6106,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
gen_repz_cmps(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 0);
} else {
gen_cmps(s, ot);
s->cc_op = CC_OP_SUBB + ot;
}
break;
case 0x6c: /* insS */