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[PATCH 21/24] target/ppc/mmu_common.c: Split off BookE handling from ppc
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From: |
BALATON Zoltan |
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Subject: |
[PATCH 21/24] target/ppc/mmu_common.c: Split off BookE handling from ppc_jumbo_xlate() |
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Date: |
Wed, 24 Apr 2024 00:31:32 +0200 (CEST) |
Introduce ppc_booke_xlate() to handle BookE and BookE 2.06 cases to
reduce ppc_jumbo_xlate() further.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
---
target/ppc/mmu_common.c | 180 ++++++++++++++++++++++++++++++----------
1 file changed, 138 insertions(+), 42 deletions(-)
diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
index ca1cbba0f0..b7803c1c26 100644
--- a/target/ppc/mmu_common.c
+++ b/target/ppc/mmu_common.c
@@ -1255,6 +1255,137 @@ static void booke206_update_mas_tlb_miss(CPUPPCState
*env, target_ulong address,
env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
}
+static bool ppc_booke_xlate(PowerPCCPU *cpu, vaddr eaddr,
+ MMUAccessType access_type,
+ hwaddr *raddrp, int *psizep, int *protp,
+ int mmu_idx, bool guest_visible)
+{
+ CPUState *cs = CPU(cpu);
+ CPUPPCState *env = &cpu->env;
+ mmu_ctx_t ctx;
+ int ret;
+
+ if (env->mmu_model == POWERPC_MMU_BOOKE206) {
+ ret = mmubooke206_get_physical_address(env, &ctx, eaddr, access_type,
+ mmu_idx);
+ } else {
+ ret = mmubooke_get_physical_address(env, &ctx, eaddr, access_type);
+ }
+ if (ret == 0) {
+ *raddrp = ctx.raddr;
+ *protp = ctx.prot;
+ *psizep = TARGET_PAGE_BITS;
+ return true;
+ } else if (!guest_visible) {
+ return false;
+ }
+
+ log_cpu_state_mask(CPU_LOG_MMU, cs, 0);
+ if (access_type == MMU_INST_FETCH) {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, eaddr, access_type, mmu_idx);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ cs->exception_index = POWERPC_EXCP_ITLB;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = eaddr;
+ env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0;
+ break;
+ case -3:
+ /* No execute protection violation */
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->spr[SPR_BOOKE_ESR] = 0;
+ env->error_code = 0;
+ break;
+ case -4:
+ /* Direct store exception */
+ /* No code fetch is allowed in direct-store areas */
+ cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0;
+ break;
+ }
+ } else {
+ switch (ret) {
+ case -1:
+ /* No matches in page tables or TLB */
+ switch (env->mmu_model) {
+ case POWERPC_MMU_BOOKE206:
+ booke206_update_mas_tlb_miss(env, eaddr, access_type, mmu_idx);
+ /* fall through */
+ case POWERPC_MMU_BOOKE:
+ cs->exception_index = POWERPC_EXCP_DTLB;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = eaddr;
+ env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ break;
+ case -2:
+ /* Access rights violation */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_BOOKE_DEAR] = eaddr;
+ env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type);
+ break;
+ case -4:
+ /* Direct store exception */
+ switch (env->access_type) {
+ case ACCESS_FLOAT:
+ /* Floating point load/store */
+ cs->exception_index = POWERPC_EXCP_ALIGN;
+ env->error_code = POWERPC_EXCP_ALIGN_FP;
+ env->spr[SPR_DAR] = eaddr;
+ break;
+ case ACCESS_RES:
+ /* lwarx, ldarx or stwcx. */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = eaddr;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x06000000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04000000;
+ }
+ break;
+ case ACCESS_EXT:
+ /* eciwx or ecowx */
+ cs->exception_index = POWERPC_EXCP_DSI;
+ env->error_code = 0;
+ env->spr[SPR_DAR] = eaddr;
+ if (access_type == MMU_DATA_STORE) {
+ env->spr[SPR_DSISR] = 0x06100000;
+ } else {
+ env->spr[SPR_DSISR] = 0x04100000;
+ }
+ break;
+ default:
+ printf("DSI: invalid exception (%d)\n", ret);
+ cs->exception_index = POWERPC_EXCP_PROGRAM;
+ env->error_code = POWERPC_EXCP_INVAL |
POWERPC_EXCP_INVAL_INVAL;
+ env->spr[SPR_DAR] = eaddr;
+ break;
+ }
+ break;
+ }
+ }
+ return false;
+}
+
/* Perform address translation */
/* TODO: Split this by mmu_model. */
static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
@@ -1307,15 +1438,6 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
env->spr[SPR_40x_DEAR] = eaddr;
env->spr[SPR_40x_ESR] = 0x00000000;
break;
- case POWERPC_MMU_BOOKE206:
- booke206_update_mas_tlb_miss(env, eaddr, access_type, mmu_idx);
- /* fall through */
- case POWERPC_MMU_BOOKE:
- cs->exception_index = POWERPC_EXCP_ITLB;
- env->error_code = 0;
- env->spr[SPR_BOOKE_DEAR] = eaddr;
- env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
- break;
case POWERPC_MMU_REAL:
cpu_abort(cs, "PowerPC in real mode should never raise "
"any MMU exceptions\n");
@@ -1326,34 +1448,18 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr
eaddr,
case -2:
/* Access rights violation */
cs->exception_index = POWERPC_EXCP_ISI;
- if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
- (env->mmu_model == POWERPC_MMU_BOOKE206)) {
- env->error_code = 0;
- } else {
- env->error_code = 0x08000000;
- }
+ env->error_code = 0x08000000;
break;
case -3:
/* No execute protection violation */
- if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
- (env->mmu_model == POWERPC_MMU_BOOKE206)) {
- env->spr[SPR_BOOKE_ESR] = 0x00000000;
- env->error_code = 0;
- } else {
- env->error_code = 0x10000000;
- }
cs->exception_index = POWERPC_EXCP_ISI;
+ env->error_code = 0x10000000;
break;
case -4:
/* Direct store exception */
/* No code fetch is allowed in direct-store areas */
cs->exception_index = POWERPC_EXCP_ISI;
- if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
- (env->mmu_model == POWERPC_MMU_BOOKE206)) {
- env->error_code = 0;
- } else {
- env->error_code = 0x10000000;
- }
+ env->error_code = 0x10000000;
break;
}
} else {
@@ -1388,15 +1494,6 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
env->spr[SPR_40x_ESR] = 0x00000000;
}
break;
- case POWERPC_MMU_BOOKE206:
- booke206_update_mas_tlb_miss(env, eaddr, access_type, mmu_idx);
- /* fall through */
- case POWERPC_MMU_BOOKE:
- cs->exception_index = POWERPC_EXCP_DTLB;
- env->error_code = 0;
- env->spr[SPR_BOOKE_DEAR] = eaddr;
- env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
- break;
case POWERPC_MMU_REAL:
cpu_abort(cs, "PowerPC in real mode should never raise "
"any MMU exceptions\n");
@@ -1413,10 +1510,6 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
if (access_type == MMU_DATA_STORE) {
env->spr[SPR_40x_ESR] |= 0x00800000;
}
- } else if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
- (env->mmu_model == POWERPC_MMU_BOOKE206)) {
- env->spr[SPR_BOOKE_DEAR] = eaddr;
- env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx,
access_type);
} else {
env->spr[SPR_DAR] = eaddr;
if (access_type == MMU_DATA_STORE) {
@@ -1495,7 +1588,10 @@ bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr,
MMUAccessType access_type,
case POWERPC_MMU_32B:
return ppc_hash32_xlate(cpu, eaddr, access_type, raddrp,
psizep, protp, mmu_idx, guest_visible);
-
+ case POWERPC_MMU_BOOKE:
+ case POWERPC_MMU_BOOKE206:
+ return ppc_booke_xlate(cpu, eaddr, access_type, raddrp,
+ psizep, protp, mmu_idx, guest_visible);
default:
return ppc_jumbo_xlate(cpu, eaddr, access_type, raddrp,
psizep, protp, mmu_idx, guest_visible);
--
2.30.9
- [PATCH 12/24] target/ppc/mmu_common.c: Inline and remove check_physical(), (continued)
- [PATCH 12/24] target/ppc/mmu_common.c: Inline and remove check_physical(), BALATON Zoltan, 2024/04/23
- [PATCH 13/24] target/ppc/mmu_common.c: Simplify mmubooke_get_physical_address(), BALATON Zoltan, 2024/04/23
- [PATCH 23/24] target/ppc/mmu_common.c: Simplify ppc_booke_xlate(), BALATON Zoltan, 2024/04/23
- [PATCH 24/24] target/ppc/mmu_common.c: Move BookE MMU functions together, BALATON Zoltan, 2024/04/23
- [PATCH 03/24] target/ppc: Simplify syscall exception handlers, BALATON Zoltan, 2024/04/23
- [PATCH 09/24] target/ppc/mmu_common.c: Rename get_bat_6xx_tlb(), BALATON Zoltan, 2024/04/23
- [PATCH 14/24] target/ppc/mmu_common.c: Simplify mmubooke206_get_physical_address(), BALATON Zoltan, 2024/04/23
- [PATCH 17/24] target/ppc/mmu_common.c: Replace hard coded constants in ppc_jumbo_xlate(), BALATON Zoltan, 2024/04/23
- [PATCH 19/24] target/ppc: Move mmu_ctx_t definition to mmu_common.c, BALATON Zoltan, 2024/04/23
- [PATCH 20/24] target/ppc: Remove ppc_hash32_pp_prot() and reuse common function, BALATON Zoltan, 2024/04/23
- [PATCH 21/24] target/ppc/mmu_common.c: Split off BookE handling from ppc_jumbo_xlate(),
BALATON Zoltan <=
- [PATCH 22/24] target/ppc/mmu_common.c: Remove BookE handling from get_physical_address_wtlb(), BALATON Zoltan, 2024/04/23