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Diffstat (limited to 'target-ppc/mmu-hash64.c')
-rw-r--r--target-ppc/mmu-hash64.c55
1 files changed, 22 insertions, 33 deletions
diff --git a/target-ppc/mmu-hash64.c b/target-ppc/mmu-hash64.c
index 30c25dd24b..654ef06308 100644
--- a/target-ppc/mmu-hash64.c
+++ b/target-ppc/mmu-hash64.c
@@ -276,17 +276,17 @@ static int ppc_hash64_pp_check(int key, int pp, int nx)
return access;
}
-static int ppc_hash64_check_prot(int prot, int rw, int access_type)
+static int ppc_hash64_check_prot(int prot, int rwx)
{
int ret;
- if (access_type == ACCESS_CODE) {
+ if (rwx == 2) {
if (prot & PAGE_EXEC) {
ret = 0;
} else {
ret = -2;
}
- } else if (rw) {
+ } else if (rwx == 1) {
if (prot & PAGE_WRITE) {
ret = 0;
} else {
@@ -304,7 +304,7 @@ static int ppc_hash64_check_prot(int prot, int rw, int access_type)
}
static int pte64_check(struct mmu_ctx_hash64 *ctx, target_ulong pte0,
- target_ulong pte1, int h, int rw, int type)
+ target_ulong pte1, int h, int rwx)
{
target_ulong mmask;
int access, ret, pp;
@@ -330,7 +330,7 @@ static int pte64_check(struct mmu_ctx_hash64 *ctx, target_ulong pte0,
/* Keep the matching PTE informations */
ctx->raddr = pte1;
ctx->prot = access;
- ret = ppc_hash64_check_prot(ctx->prot, rw, type);
+ ret = ppc_hash64_check_prot(ctx->prot, rwx);
if (ret == 0) {
/* Access granted */
LOG_MMU("PTE access granted !\n");
@@ -372,7 +372,7 @@ static int ppc_hash64_pte_update_flags(struct mmu_ctx_hash64 *ctx,
/* PTE table lookup */
static int find_pte64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx, int h,
- int rw, int type, int target_page_bits)
+ int rwx, int target_page_bits)
{
hwaddr pteg_off;
target_ulong pte0, pte1;
@@ -385,7 +385,7 @@ static int find_pte64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx, int h,
pte0 = ppc_hash64_load_hpte0(env, pteg_off + i*HASH_PTE_SIZE_64);
pte1 = ppc_hash64_load_hpte1(env, pteg_off + i*HASH_PTE_SIZE_64);
- r = pte64_check(ctx, pte0, pte1, h, rw, type);
+ r = pte64_check(ctx, pte0, pte1, h, rwx);
LOG_MMU("Load pte from %016" HWADDR_PRIx " => " TARGET_FMT_lx " "
TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
pteg_off + (i * 16), pte0, pte1, (int)(pte0 & 1), h,
@@ -420,7 +420,7 @@ static int find_pte64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx, int h,
ctx->raddr, ctx->prot, ret);
/* Update page flags */
pte1 = ctx->raddr;
- if (ppc_hash64_pte_update_flags(ctx, &pte1, ret, rw) == 1) {
+ if (ppc_hash64_pte_update_flags(ctx, &pte1, ret, rwx) == 1) {
ppc_hash64_store_hpte1(env, pteg_off + good * HASH_PTE_SIZE_64, pte1);
}
}
@@ -435,7 +435,7 @@ static int find_pte64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx, int h,
}
static int get_segment64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx,
- target_ulong eaddr, int rw, int type)
+ target_ulong eaddr, int rwx)
{
hwaddr hash;
target_ulong vsid;
@@ -484,7 +484,7 @@ static int get_segment64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx,
ret = -1;
/* Check if instruction fetch is allowed, if needed */
- if (type != ACCESS_CODE || ctx->nx == 0) {
+ if (rwx != 2 || ctx->nx == 0) {
/* Page address translation */
LOG_MMU("htab_base " TARGET_FMT_plx " htab_mask " TARGET_FMT_plx
" hash " TARGET_FMT_plx "\n",
@@ -500,14 +500,14 @@ static int get_segment64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx,
env->htab_base, env->htab_mask, vsid, ctx->ptem,
ctx->hash[0]);
/* Primary table lookup */
- ret = find_pte64(env, ctx, 0, rw, type, target_page_bits);
+ ret = find_pte64(env, ctx, 0, rwx, target_page_bits);
if (ret < 0) {
/* Secondary table lookup */
LOG_MMU("1 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx
" vsid=" TARGET_FMT_lx " api=" TARGET_FMT_lx
" hash=" TARGET_FMT_plx "\n", env->htab_base,
env->htab_mask, vsid, ctx->ptem, ctx->hash[1]);
- ret2 = find_pte64(env, ctx, 1, rw, type, target_page_bits);
+ ret2 = find_pte64(env, ctx, 1, rwx, target_page_bits);
if (ret2 != -1) {
ret = ret2;
}
@@ -522,18 +522,17 @@ static int get_segment64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx,
static int ppc_hash64_get_physical_address(CPUPPCState *env,
struct mmu_ctx_hash64 *ctx,
- target_ulong eaddr, int rw,
- int access_type)
+ target_ulong eaddr, int rwx)
{
- bool real_mode = (access_type == ACCESS_CODE && msr_ir == 0)
- || (access_type != ACCESS_CODE && msr_dr == 0);
+ bool real_mode = (rwx == 2 && msr_ir == 0)
+ || (rwx != 2 && msr_dr == 0);
if (real_mode) {
ctx->raddr = eaddr & 0x0FFFFFFFFFFFFFFFULL;
ctx->prot = PAGE_READ | PAGE_EXEC | PAGE_WRITE;
return 0;
} else {
- return get_segment64(env, ctx, eaddr, rw, access_type);
+ return get_segment64(env, ctx, eaddr, rwx);
}
}
@@ -541,30 +540,20 @@ hwaddr ppc_hash64_get_phys_page_debug(CPUPPCState *env, target_ulong addr)
{
struct mmu_ctx_hash64 ctx;
- if (unlikely(ppc_hash64_get_physical_address(env, &ctx, addr, 0, ACCESS_INT)
- != 0)) {
+ if (unlikely(ppc_hash64_get_physical_address(env, &ctx, addr, 0) != 0)) {
return -1;
}
return ctx.raddr & TARGET_PAGE_MASK;
}
-int ppc_hash64_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
+int ppc_hash64_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rwx,
int mmu_idx)
{
struct mmu_ctx_hash64 ctx;
- int access_type;
int ret = 0;
- if (rw == 2) {
- /* code access */
- rw = 0;
- access_type = ACCESS_CODE;
- } else {
- /* data access */
- access_type = env->access_type;
- }
- ret = ppc_hash64_get_physical_address(env, &ctx, address, rw, access_type);
+ ret = ppc_hash64_get_physical_address(env, &ctx, address, rwx);
if (ret == 0) {
tlb_set_page(env, address & TARGET_PAGE_MASK,
ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
@@ -572,7 +561,7 @@ int ppc_hash64_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
ret = 0;
} else if (ret < 0) {
LOG_MMU_STATE(env);
- if (access_type == ACCESS_CODE) {
+ if (rwx == 2) {
switch (ret) {
case -1:
env->exception_index = POWERPC_EXCP_ISI;
@@ -601,7 +590,7 @@ int ppc_hash64_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
env->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
- if (rw == 1) {
+ if (rwx == 1) {
env->spr[SPR_DSISR] = 0x42000000;
} else {
env->spr[SPR_DSISR] = 0x40000000;
@@ -612,7 +601,7 @@ int ppc_hash64_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
env->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
- if (rw == 1) {
+ if (rwx == 1) {
env->spr[SPR_DSISR] = 0x0A000000;
} else {
env->spr[SPR_DSISR] = 0x08000000;
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-09 12:17:39 +0000