diff options
| -rw-r--r-- | target/ppc/translate/vmx-impl.inc.c | 84 |
1 files changed, 40 insertions, 44 deletions
diff --git a/target/ppc/translate/vmx-impl.inc.c b/target/ppc/translate/vmx-impl.inc.c index 2472a52..81d5a7a 100644 --- a/target/ppc/translate/vmx-impl.inc.c +++ b/target/ppc/translate/vmx-impl.inc.c @@ -590,40 +590,38 @@ static void trans_vsl(DisasContext *ctx) int VT = rD(ctx->opcode); int VA = rA(ctx->opcode); int VB = rB(ctx->opcode); - TCGv_i64 avrA = tcg_temp_new_i64(); - TCGv_i64 avrB = tcg_temp_new_i64(); + TCGv_i64 avr = tcg_temp_new_i64(); TCGv_i64 sh = tcg_temp_new_i64(); - TCGv_i64 shifted = tcg_temp_new_i64(); + TCGv_i64 carry = tcg_temp_new_i64(); TCGv_i64 tmp = tcg_temp_new_i64(); - /* Place bits 125-127 of vB in sh. */ - get_avr64(avrB, VB, false); - tcg_gen_andi_i64(sh, avrB, 0x07ULL); + /* Place bits 125-127 of vB in 'sh'. */ + get_avr64(avr, VB, false); + tcg_gen_andi_i64(sh, avr, 0x07ULL); /* - * Save highest sh bits of lower doubleword element of vA in variable - * shifted and perform shift on lower doubleword. + * Save highest 'sh' bits of lower doubleword element of vA in variable + * 'carry' and perform shift on lower doubleword. */ - get_avr64(avrA, VA, false); - tcg_gen_subfi_i64(tmp, 64, sh); - tcg_gen_shr_i64(shifted, avrA, tmp); - tcg_gen_andi_i64(shifted, shifted, 0x7fULL); - tcg_gen_shl_i64(avrA, avrA, sh); - set_avr64(VT, avrA, false); + get_avr64(avr, VA, false); + tcg_gen_subfi_i64(tmp, 32, sh); + tcg_gen_shri_i64(carry, avr, 32); + tcg_gen_shr_i64(carry, carry, tmp); + tcg_gen_shl_i64(avr, avr, sh); + set_avr64(VT, avr, false); /* * Perform shift on higher doubleword element of vA and replace lowest - * sh bits with shifted. + * 'sh' bits with 'carry'. */ - get_avr64(avrA, VA, true); - tcg_gen_shl_i64(avrA, avrA, sh); - tcg_gen_or_i64(avrA, avrA, shifted); - set_avr64(VT, avrA, true); + get_avr64(avr, VA, true); + tcg_gen_shl_i64(avr, avr, sh); + tcg_gen_or_i64(avr, avr, carry); + set_avr64(VT, avr, true); - tcg_temp_free_i64(avrA); - tcg_temp_free_i64(avrB); + tcg_temp_free_i64(avr); tcg_temp_free_i64(sh); - tcg_temp_free_i64(shifted); + tcg_temp_free_i64(carry); tcg_temp_free_i64(tmp); } @@ -639,39 +637,37 @@ static void trans_vsr(DisasContext *ctx) int VT = rD(ctx->opcode); int VA = rA(ctx->opcode); int VB = rB(ctx->opcode); - TCGv_i64 avrA = tcg_temp_new_i64(); - TCGv_i64 avrB = tcg_temp_new_i64(); + TCGv_i64 avr = tcg_temp_new_i64(); TCGv_i64 sh = tcg_temp_new_i64(); - TCGv_i64 shifted = tcg_temp_new_i64(); + TCGv_i64 carry = tcg_temp_new_i64(); TCGv_i64 tmp = tcg_temp_new_i64(); - /* Place bits 125-127 of vB in sh. */ - get_avr64(avrB, VB, false); - tcg_gen_andi_i64(sh, avrB, 0x07ULL); + /* Place bits 125-127 of vB in 'sh'. */ + get_avr64(avr, VB, false); + tcg_gen_andi_i64(sh, avr, 0x07ULL); /* - * Save lowest sh bits of higher doubleword element of vA in variable - * shifted and perform shift on higher doubleword. + * Save lowest 'sh' bits of higher doubleword element of vA in variable + * 'carry' and perform shift on higher doubleword. */ - get_avr64(avrA, VA, true); - tcg_gen_subfi_i64(tmp, 64, sh); - tcg_gen_shl_i64(shifted, avrA, tmp); - tcg_gen_andi_i64(shifted, shifted, 0xfe00000000000000ULL); - tcg_gen_shr_i64(avrA, avrA, sh); - set_avr64(VT, avrA, true); + get_avr64(avr, VA, true); + tcg_gen_subfi_i64(tmp, 32, sh); + tcg_gen_shli_i64(carry, avr, 32); + tcg_gen_shl_i64(carry, carry, tmp); + tcg_gen_shr_i64(avr, avr, sh); + set_avr64(VT, avr, true); /* * Perform shift on lower doubleword element of vA and replace highest - * sh bits with shifted. + * 'sh' bits with 'carry'. */ - get_avr64(avrA, VA, false); - tcg_gen_shr_i64(avrA, avrA, sh); - tcg_gen_or_i64(avrA, avrA, shifted); - set_avr64(VT, avrA, false); + get_avr64(avr, VA, false); + tcg_gen_shr_i64(avr, avr, sh); + tcg_gen_or_i64(avr, avr, carry); + set_avr64(VT, avr, false); - tcg_temp_free_i64(avrA); - tcg_temp_free_i64(avrB); + tcg_temp_free_i64(avr); tcg_temp_free_i64(sh); - tcg_temp_free_i64(shifted); + tcg_temp_free_i64(carry); tcg_temp_free_i64(tmp); } |