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| author | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2015-03-19 15:36:14 +0000 |
|---|---|---|
| committer | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2015-03-24 09:45:28 +0100 |
| commit | 2b9d09bb3c44de934de03864d56ddd8a38ed863a (patch) | |
| tree | 11272944b07a88d2e4458a1b4dac9f7c7f508162 /target-tricore/translate.c | |
| parent | 30a0d72f949fc46e54a180cf703e89b6d3df157d (diff) | |
| download | qemu-2b9d09bb3c44de934de03864d56ddd8a38ed863a.tar.gz qemu-2b9d09bb3c44de934de03864d56ddd8a38ed863a.tar.bz2 qemu-2b9d09bb3c44de934de03864d56ddd8a38ed863a.zip | |
target-tricore: fix DVINIT_HU/BU calculating overflow before result
dvinit_hu/bu for ISA v1.3 calculate the higher part of the result, that is needed
for the overflow bits, after calculating the overflow bits.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Diffstat (limited to 'target-tricore/translate.c')
| -rw-r--r-- | target-tricore/translate.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/target-tricore/translate.c b/target-tricore/translate.c index 0b7cf06f94..989a047991 100644 --- a/target-tricore/translate.c +++ b/target-tricore/translate.c @@ -6240,7 +6240,7 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx) uint32_t op2; int r1, r2, r3; - TCGv temp, temp2; + TCGv temp, temp2, temp3; op2 = MASK_OP_RR_OP2(ctx->opcode); r3 = MASK_OP_RR_D(ctx->opcode); @@ -6261,14 +6261,17 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx) case OPC2_32_RR_DVINIT_BU: temp = tcg_temp_new(); temp2 = tcg_temp_new(); + temp3 = tcg_temp_new(); + + tcg_gen_shri_tl(temp3, cpu_gpr_d[r1], 8); /* reset av */ tcg_gen_movi_tl(cpu_PSW_AV, 0); if (!tricore_feature(env, TRICORE_FEATURE_131)) { /* overflow = (abs(D[r3+1]) >= abs(D[r2])) */ - tcg_gen_neg_tl(temp, cpu_gpr_d[r3+1]); + tcg_gen_neg_tl(temp, temp3); /* use cpu_PSW_AV to compare against 0 */ - tcg_gen_movcond_tl(TCG_COND_LT, temp, cpu_gpr_d[r3+1], cpu_PSW_AV, - temp, cpu_gpr_d[r3+1]); + tcg_gen_movcond_tl(TCG_COND_LT, temp, temp3, cpu_PSW_AV, + temp, temp3); tcg_gen_neg_tl(temp2, cpu_gpr_d[r2]); tcg_gen_movcond_tl(TCG_COND_LT, temp2, cpu_gpr_d[r2], cpu_PSW_AV, temp2, cpu_gpr_d[r2]); @@ -6281,12 +6284,12 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx) /* sv */ tcg_gen_or_tl(cpu_PSW_SV, cpu_PSW_SV, cpu_PSW_V); /* write result */ - tcg_gen_shri_tl(temp, cpu_gpr_d[r1], 8); tcg_gen_shli_tl(cpu_gpr_d[r3], cpu_gpr_d[r1], 24); - tcg_gen_mov_tl(cpu_gpr_d[r3+1], temp); + tcg_gen_mov_tl(cpu_gpr_d[r3+1], temp3); tcg_temp_free(temp); tcg_temp_free(temp2); + tcg_temp_free(temp3); break; case OPC2_32_RR_DVINIT_H: gen_dvinit_h(env, cpu_gpr_d[r3], cpu_gpr_d[r3+1], cpu_gpr_d[r1], @@ -6295,14 +6298,17 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx) case OPC2_32_RR_DVINIT_HU: temp = tcg_temp_new(); temp2 = tcg_temp_new(); + temp3 = tcg_temp_new(); + + tcg_gen_shri_tl(temp3, cpu_gpr_d[r1], 16); /* reset av */ tcg_gen_movi_tl(cpu_PSW_AV, 0); if (!tricore_feature(env, TRICORE_FEATURE_131)) { /* overflow = (abs(D[r3+1]) >= abs(D[r2])) */ - tcg_gen_neg_tl(temp, cpu_gpr_d[r3+1]); + tcg_gen_neg_tl(temp, temp3); /* use cpu_PSW_AV to compare against 0 */ - tcg_gen_movcond_tl(TCG_COND_LT, temp, cpu_gpr_d[r3+1], cpu_PSW_AV, - temp, cpu_gpr_d[r3+1]); + tcg_gen_movcond_tl(TCG_COND_LT, temp, temp3, cpu_PSW_AV, + temp, temp3); tcg_gen_neg_tl(temp2, cpu_gpr_d[r2]); tcg_gen_movcond_tl(TCG_COND_LT, temp2, cpu_gpr_d[r2], cpu_PSW_AV, temp2, cpu_gpr_d[r2]); @@ -6315,11 +6321,11 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx) /* sv */ tcg_gen_or_tl(cpu_PSW_SV, cpu_PSW_SV, cpu_PSW_V); /* write result */ - tcg_gen_mov_tl(temp, cpu_gpr_d[r1]); - tcg_gen_shri_tl(cpu_gpr_d[r3+1], temp, 16); - tcg_gen_shli_tl(cpu_gpr_d[r3], temp, 16); + tcg_gen_mov_tl(cpu_gpr_d[r3+1], temp3); + tcg_gen_shli_tl(cpu_gpr_d[r3], cpu_gpr_d[r1], 16); tcg_temp_free(temp); tcg_temp_free(temp2); + tcg_temp_free(temp3); break; case OPC2_32_RR_DVINIT: temp = tcg_temp_new(); |