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target/ppc/mmu_common.c: Simplify a switch statement

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In mmu6xx_get_physical_address() the switch handles all cases so the
default is never reached and can be dropped. Also group together cases
which just return -4.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
BALATON Zoltan 2024-05-27 01:12:50 +02:00 • committed by Nicholas Piggin
parent 8abd6d4288
commit 40df08d223
1 changed files with 4 additions and 15 deletions
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19
target/ppc/mmu_common.c
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@ -375,15 +375,6 @@ static int mmu6xx_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
case ACCESS_INT: case ACCESS_INT:
/* Integer load/store : only access allowed */ /* Integer load/store : only access allowed */
break; break;
case ACCESS_CODE:
/* No code fetch is allowed in direct-store areas */
return -4;
case ACCESS_FLOAT:
/* Floating point load/store */
return -4;
case ACCESS_RES:
/* lwarx, ldarx or srwcx. */
return -4;
case ACCESS_CACHE: case ACCESS_CACHE:
/* /*
* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi
@ -393,12 +384,10 @@ static int mmu6xx_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
*/ */
ctx->raddr = eaddr; ctx->raddr = eaddr;
return 0; return 0;
case ACCESS_EXT: case ACCESS_CODE: /* No code fetch is allowed in direct-store areas */
/* eciwx or ecowx */ case ACCESS_FLOAT: /* Floating point load/store */
return -4; case ACCESS_RES: /* lwarx, ldarx or srwcx. */
default: case ACCESS_EXT: /* eciwx or ecowx */
qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need address"
" translation\n");
return -4; return -4;
} }
if ((access_type == MMU_DATA_STORE || ctx->key != 1) && if ((access_type == MMU_DATA_STORE || ctx->key != 1) &&