diff options
| author | j_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-10-31 22:02:17 +0000 |
|---|---|---|
| committer | j_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-10-31 22:02:17 +0000 |
| commit | fc0d441e14f07a35f9ea67ac8ca032a2ea902b38 (patch) | |
| tree | d4a93196453e54252f08e88067000b195d8c10ef /target-ppc | |
| parent | a79ee211ceee191de97d0862a93128e7688a2843 (diff) | |
Fix CR ops with complement, thanks to Julian Seward for testing
and reporting the bug :
* remove bugged CR ops specific micro-ops
* use standard and / or / shift operations instead
* comment not-used-anymore op_store_T1_crf_crf micro-op template.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3501 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/op.c | 25 | ||||
| -rw-r--r-- | target-ppc/op_template.h | 2 | ||||
| -rw-r--r-- | target-ppc/translate.c | 24 |
3 files changed, 27 insertions, 24 deletions
diff --git a/target-ppc/op.c b/target-ppc/op.c index 4c170d84b6..da08ec5264 100644 --- a/target-ppc/op.c +++ b/target-ppc/op.c @@ -651,25 +651,6 @@ void OPPROTO op_store_fpscr (void) RETURN(); } -/* crf operations */ -void OPPROTO op_getbit_T0 (void) -{ - T0 = (T0 >> PARAM1) & 1; - RETURN(); -} - -void OPPROTO op_getbit_T1 (void) -{ - T1 = (T1 >> PARAM1) & 1; - RETURN(); -} - -void OPPROTO op_setcrfbit (void) -{ - T1 = (T1 & (uint32_t)PARAM1) | (T0 << PARAM2); - RETURN(); -} - /* Branch */ #define EIP env->nip @@ -1737,6 +1718,12 @@ void OPPROTO op_sli_T0 (void) RETURN(); } +void OPPROTO op_sli_T1 (void) +{ + T1 = T1 << PARAM1; + RETURN(); +} + void OPPROTO op_srl_T0_T1 (void) { T0 = (uint32_t)T0 >> T1; diff --git a/target-ppc/op_template.h b/target-ppc/op_template.h index bdd8844323..51f9b3681b 100644 --- a/target-ppc/op_template.h +++ b/target-ppc/op_template.h @@ -159,11 +159,13 @@ void OPPROTO glue(op_store_T0_crf_crf, REG) (void) RETURN(); } +#if 0 // Unused void OPPROTO glue(op_store_T1_crf_crf, REG) (void) { env->crf[REG] = T1; RETURN(); } +#endif #endif /* REG <= 7 */ diff --git a/target-ppc/translate.c b/target-ppc/translate.c index c3e5340f20..015a6215a3 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -120,7 +120,9 @@ static always_inline void func (int n) \ GEN8(gen_op_load_crf_T0, gen_op_load_crf_T0_crf); GEN8(gen_op_load_crf_T1, gen_op_load_crf_T1_crf); GEN8(gen_op_store_T0_crf, gen_op_store_T0_crf_crf); +#if 0 // Unused GEN8(gen_op_store_T1_crf, gen_op_store_T1_crf_crf); +#endif /* General purpose registers moves */ GEN32(gen_op_load_gpr_T0, gen_op_load_gpr_T0_gpr); @@ -3318,15 +3320,27 @@ GEN_HANDLER(bclr, 0x13, 0x10, 0x00, 0x00000000, PPC_FLOW) #define GEN_CRLOGIC(op, opc) \ GEN_HANDLER(cr##op, 0x13, 0x01, opc, 0x00000001, PPC_INTEGER) \ { \ + uint8_t bitmask; \ + int sh; \ gen_op_load_crf_T0(crbA(ctx->opcode) >> 2); \ - gen_op_getbit_T0(3 - (crbA(ctx->opcode) & 0x03)); \ + sh = (crbD(ctx->opcode) & 0x03) - (crbA(ctx->opcode) & 0x03); \ + if (sh > 0) \ + gen_op_srli_T0(sh); \ + else if (sh < 0) \ + gen_op_sli_T0(-sh); \ gen_op_load_crf_T1(crbB(ctx->opcode) >> 2); \ - gen_op_getbit_T1(3 - (crbB(ctx->opcode) & 0x03)); \ + sh = (crbD(ctx->opcode) & 0x03) - (crbB(ctx->opcode) & 0x03); \ + if (sh > 0) \ + gen_op_srli_T1(sh); \ + else if (sh < 0) \ + gen_op_sli_T1(-sh); \ gen_op_##op(); \ + bitmask = 1 << (3 - (crbD(ctx->opcode) & 0x03)); \ + gen_op_andi_T0(bitmask); \ gen_op_load_crf_T1(crbD(ctx->opcode) >> 2); \ - gen_op_setcrfbit(~(1 << (3 - (crbD(ctx->opcode) & 0x03))), \ - 3 - (crbD(ctx->opcode) & 0x03)); \ - gen_op_store_T1_crf(crbD(ctx->opcode) >> 2); \ + gen_op_andi_T1(~bitmask); \ + gen_op_or(); \ + gen_op_store_T0_crf(crbD(ctx->opcode) >> 2); \ } /* crand */ |