diff options
| author | Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> | 2017-02-27 10:27:55 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-03-01 11:23:39 +1100 |
| commit | 6b10d008a0c779e1226d197dfb9ba796559c1381 (patch) | |
| tree | ca7e90e48018827b3f4ac31aa90fa1f9a83ba58b /target/ppc/translate.c | |
| parent | dd09c36159858c66ab6e47c688e4177dd3912bf0 (diff) | |
| download | qemu-6b10d008a0c779e1226d197dfb9ba796559c1381.tar.gz | |
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>
Diffstat (limited to 'target/ppc/translate.c')
| -rw-r--r-- | target/ppc/translate.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/ppc/translate.c b/target/ppc/translate.c index be7378b9ce..eba83efbbd 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -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 { |