diff options
Diffstat (limited to 'target-ppc/translate.c')
| -rw-r--r-- | target-ppc/translate.c | 98 |
1 files changed, 49 insertions, 49 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 648bf9e187..c8e8b6a4e5 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -1786,21 +1786,24 @@ GEN_PPC64_R4(rldimi, 0x1E, 0x06); /* slw & slw. */ static void gen_slw(DisasContext *ctx) { - TCGv t0; - int l1, l2; - l1 = gen_new_label(); - l2 = gen_new_label(); + TCGv t0, t1; - t0 = tcg_temp_local_new(); - tcg_gen_andi_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3f); - tcg_gen_brcondi_tl(TCG_COND_LT, t0, 0x20, l1); - tcg_gen_movi_tl(cpu_gpr[rA(ctx->opcode)], 0); - tcg_gen_br(l2); - gen_set_label(l1); - tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], t0); - tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]); - gen_set_label(l2); + t0 = tcg_temp_new(); + /* AND rS with a mask that is 0 when rB >= 0x20 */ +#if defined(TARGET_PPC64) + tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a); + tcg_gen_sari_tl(t0, t0, 0x3f); +#else + tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a); + tcg_gen_sari_tl(t0, t0, 0x1f); +#endif + tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0); + t1 = tcg_temp_new(); + tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f); + tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], t0, t1); + tcg_temp_free(t1); tcg_temp_free(t0); + tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]); if (unlikely(Rc(ctx->opcode) != 0)) gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); } @@ -1848,21 +1851,22 @@ static void gen_srawi(DisasContext *ctx) static void gen_srw(DisasContext *ctx) { TCGv t0, t1; - int l1, l2; - l1 = gen_new_label(); - l2 = gen_new_label(); - t0 = tcg_temp_local_new(); - tcg_gen_andi_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3f); - tcg_gen_brcondi_tl(TCG_COND_LT, t0, 0x20, l1); - tcg_gen_movi_tl(cpu_gpr[rA(ctx->opcode)], 0); - tcg_gen_br(l2); - gen_set_label(l1); + t0 = tcg_temp_new(); + /* AND rS with a mask that is 0 when rB >= 0x20 */ +#if defined(TARGET_PPC64) + tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a); + tcg_gen_sari_tl(t0, t0, 0x3f); +#else + tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a); + tcg_gen_sari_tl(t0, t0, 0x1f); +#endif + tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0); + tcg_gen_ext32u_tl(t0, t0); t1 = tcg_temp_new(); - tcg_gen_ext32u_tl(t1, cpu_gpr[rS(ctx->opcode)]); - tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t1, t0); + tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f); + tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t0, t1); tcg_temp_free(t1); - gen_set_label(l2); tcg_temp_free(t0); if (unlikely(Rc(ctx->opcode) != 0)) gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); @@ -1872,19 +1876,17 @@ static void gen_srw(DisasContext *ctx) /* sld & sld. */ static void gen_sld(DisasContext *ctx) { - TCGv t0; - int l1, l2; - l1 = gen_new_label(); - l2 = gen_new_label(); + TCGv t0, t1; - t0 = tcg_temp_local_new(); - tcg_gen_andi_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x7f); - tcg_gen_brcondi_tl(TCG_COND_LT, t0, 0x40, l1); - tcg_gen_movi_tl(cpu_gpr[rA(ctx->opcode)], 0); - tcg_gen_br(l2); - gen_set_label(l1); - tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], t0); - gen_set_label(l2); + t0 = tcg_temp_new(); + /* AND rS with a mask that is 0 when rB >= 0x40 */ + tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x39); + tcg_gen_sari_tl(t0, t0, 0x3f); + tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0); + t1 = tcg_temp_new(); + tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x3f); + tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], t0, t1); + tcg_temp_free(t1); tcg_temp_free(t0); if (unlikely(Rc(ctx->opcode) != 0)) gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); @@ -1939,19 +1941,17 @@ static void gen_sradi1(DisasContext *ctx) /* srd & srd. */ static void gen_srd(DisasContext *ctx) { - TCGv t0; - int l1, l2; - l1 = gen_new_label(); - l2 = gen_new_label(); + TCGv t0, t1; - t0 = tcg_temp_local_new(); - tcg_gen_andi_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x7f); - tcg_gen_brcondi_tl(TCG_COND_LT, t0, 0x40, l1); - tcg_gen_movi_tl(cpu_gpr[rA(ctx->opcode)], 0); - tcg_gen_br(l2); - gen_set_label(l1); - tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], t0); - gen_set_label(l2); + t0 = tcg_temp_new(); + /* AND rS with a mask that is 0 when rB >= 0x40 */ + tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x39); + tcg_gen_sari_tl(t0, t0, 0x3f); + tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0); + t1 = tcg_temp_new(); + tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x3f); + tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t0, t1); + tcg_temp_free(t1); tcg_temp_free(t0); if (unlikely(Rc(ctx->opcode) != 0)) gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); |