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target/ppc: update ca32 in arithmetic add 

Adds routine to compute ca32 - gen_op_arith_compute_ca32

For 64-bit mode use the compute ca32 routine. While for 32-bit mode, CA
and CA32 will have same value.

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Nikunj A Dadhania 2017-02-27 10:27:55 +05:30 committed by David Gibson
parent dd09c36159
commit 6b10d008a0
1 changed files with 21 additions and 0 deletions
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21
target/ppc/translate.c
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@ -816,6 +816,23 @@ static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0,
tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);
}
static inline void gen_op_arith_compute_ca32(DisasContext *ctx,
TCGv res, TCGv arg0, TCGv arg1,
int sub)
{
TCGv t0;
if (!is_isa300(ctx)) {
return;
}
t0 = tcg_temp_new();
tcg_gen_xor_tl(t0, arg0, arg1);
tcg_gen_xor_tl(t0, t0, res);
tcg_gen_extract_tl(cpu_ca32, t0, 32, 1);
tcg_temp_free(t0);
}
/* Common add function */
static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1,
TCGv arg2, bool add_ca, bool compute_ca,
@ -842,6 +859,9 @@ static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1,
tcg_temp_free(t1);
tcg_gen_shri_tl(cpu_ca, cpu_ca, 32); /* extract bit 32 */
tcg_gen_andi_tl(cpu_ca, cpu_ca, 1);
if (is_isa300(ctx)) {
tcg_gen_mov_tl(cpu_ca32, cpu_ca);
}
} else {
TCGv zero = tcg_const_tl(0);
if (add_ca) {
@ -850,6 +870,7 @@ static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1,
} else {
tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, arg2, zero);
}
gen_op_arith_compute_ca32(ctx, t0, arg1, arg2, 0);
tcg_temp_free(zero);
}
} else {