aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--target-ppc/mmu-hash32.c98
-rw-r--r--target-ppc/mmu-hash64.c55
2 files changed, 66 insertions, 87 deletions
diff --git a/target-ppc/mmu-hash32.c b/target-ppc/mmu-hash32.c
index a7c2e356e8..ad5ef44c28 100644
--- a/target-ppc/mmu-hash32.c
+++ b/target-ppc/mmu-hash32.c
@@ -91,17 +91,17 @@ static int ppc_hash32_pp_check(int key, int pp, int nx)
return access;
}
-static int ppc_hash32_check_prot(int prot, int rw, int access_type)
+static int ppc_hash32_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) {
if (prot & PAGE_WRITE) {
ret = 0;
} else {
@@ -172,7 +172,7 @@ static void hash32_bat_601_size_prot(CPUPPCState *env, target_ulong *blp,
}
static int ppc_hash32_get_bat(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
- target_ulong virtual, int rw, int type)
+ target_ulong virtual, int rwx)
{
target_ulong *BATlt, *BATut, *BATu, *BATl;
target_ulong BEPIl, BEPIu, bl;
@@ -180,16 +180,13 @@ static int ppc_hash32_get_bat(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
int ret = -1;
LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
- type == ACCESS_CODE ? 'I' : 'D', virtual);
- switch (type) {
- case ACCESS_CODE:
+ rwx == 2 ? 'I' : 'D', virtual);
+ if (rwx == 2) {
BATlt = env->IBAT[1];
BATut = env->IBAT[0];
- break;
- default:
+ } else {
BATlt = env->DBAT[1];
BATut = env->DBAT[0];
- break;
}
for (i = 0; i < env->nb_BATs; i++) {
BATu = &BATut[i];
@@ -214,7 +211,7 @@ static int ppc_hash32_get_bat(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
(virtual & 0x0001F000);
/* Compute access rights */
ctx->prot = prot;
- ret = ppc_hash32_check_prot(ctx->prot, rw, type);
+ ret = ppc_hash32_check_prot(ctx->prot, rwx);
if (ret == 0) {
LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n",
i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
@@ -248,7 +245,7 @@ static int ppc_hash32_get_bat(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
}
static int pte_check_hash32(struct mmu_ctx_hash32 *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;
@@ -272,7 +269,7 @@ static int pte_check_hash32(struct mmu_ctx_hash32 *ctx, target_ulong pte0,
/* Keep the matching PTE informations */
ctx->raddr = pte1;
ctx->prot = access;
- ret = ppc_hash32_check_prot(ctx->prot, rw, type);
+ ret = ppc_hash32_check_prot(ctx->prot, rwx);
if (ret == 0) {
/* Access granted */
LOG_MMU("PTE access granted !\n");
@@ -287,7 +284,7 @@ static int pte_check_hash32(struct mmu_ctx_hash32 *ctx, target_ulong pte0,
}
static int ppc_hash32_pte_update_flags(struct mmu_ctx_hash32 *ctx, target_ulong *pte1p,
- int ret, int rw)
+ int ret, int rwx)
{
int store = 0;
@@ -298,7 +295,7 @@ static int ppc_hash32_pte_update_flags(struct mmu_ctx_hash32 *ctx, target_ulong
store = 1;
}
if (!(*pte1p & HPTE32_R_C)) {
- if (rw == 1 && ret == 0) {
+ if (rwx == 1 && ret == 0) {
/* Update changed flag */
*pte1p |= HPTE32_R_C;
store = 1;
@@ -318,7 +315,7 @@ hwaddr get_pteg_offset32(CPUPPCState *env, hwaddr hash)
/* PTE table lookup */
static int find_pte32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx, int h,
- int rw, int type, int target_page_bits)
+ int rwx, int target_page_bits)
{
hwaddr pteg_off;
target_ulong pte0, pte1;
@@ -330,7 +327,7 @@ static int find_pte32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx, int h,
for (i = 0; i < HPTES_PER_GROUP; i++) {
pte0 = ppc_hash32_load_hpte0(env, pteg_off + i*HASH_PTE_SIZE_32);
pte1 = ppc_hash32_load_hpte1(env, pteg_off + i*HASH_PTE_SIZE_32);
- r = pte_check_hash32(ctx, pte0, pte1, h, rw, type);
+ r = pte_check_hash32(ctx, pte0, pte1, h, rwx);
LOG_MMU("Load pte from %08" HWADDR_PRIx " => " TARGET_FMT_lx " "
TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
pteg_off + (i * 8), pte0, pte1, (int)(pte0 >> 31), h,
@@ -365,7 +362,7 @@ static int find_pte32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx, int h,
ctx->raddr, ctx->prot, ret);
/* Update page flags */
pte1 = ctx->raddr;
- if (ppc_hash32_pte_update_flags(ctx, &pte1, ret, rw) == 1) {
+ if (ppc_hash32_pte_update_flags(ctx, &pte1, ret, rwx) == 1) {
ppc_hash32_store_hpte1(env, pteg_off + good * HASH_PTE_SIZE_32,
pte1);
}
@@ -381,7 +378,7 @@ static int find_pte32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx, int h,
}
static int get_segment32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
- target_ulong eaddr, int rw, int type)
+ target_ulong eaddr, int rwx)
{
hwaddr hash;
target_ulong vsid;
@@ -401,9 +398,9 @@ static int get_segment32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
target_page_bits = TARGET_PAGE_BITS;
LOG_MMU("Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx " nip="
TARGET_FMT_lx " lr=" TARGET_FMT_lx
- " ir=%d dr=%d pr=%d %d t=%d\n",
+ " ir=%d dr=%d pr=%d %d\n",
eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir,
- (int)msr_dr, pr != 0 ? 1 : 0, rw, type);
+ (int)msr_dr, pr != 0 ? 1 : 0, rwx);
pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
hash = vsid ^ pgidx;
ctx->ptem = (vsid << 7) | (pgidx >> 10);
@@ -413,7 +410,7 @@ static int get_segment32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
ret = -1;
if (!ds) {
/* 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",
@@ -429,15 +426,14 @@ static int get_segment32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
env->htab_base, env->htab_mask, vsid, ctx->ptem,
ctx->hash[0]);
/* Primary table lookup */
- ret = find_pte32(env, ctx, 0, rw, type, target_page_bits);
+ ret = find_pte32(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_pte32(env, ctx, 1, rw, type,
- target_page_bits);
+ ret2 = find_pte32(env, ctx, 1, rwx, target_page_bits);
if (ret2 != -1) {
ret = ret2;
}
@@ -486,13 +482,15 @@ static int get_segment32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
return 0;
}
- switch (type) {
+ if (rwx == 2) {
+ /* No code fetch is allowed in direct-store areas */
+ return -4;
+ }
+
+ switch (env->access_type) {
case ACCESS_INT:
/* Integer load/store : only access allowed */
break;
- case ACCESS_CODE:
- /* No code fetch is allowed in direct-store areas */
- return -4;
case ACCESS_FLOAT:
/* Floating point load/store */
return -4;
@@ -514,7 +512,7 @@ static int get_segment32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
"address translation\n");
return -4;
}
- if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
+ if ((rwx == 1 || ctx->key != 1) && (rwx == 0 || ctx->key != 0)) {
ctx->raddr = eaddr;
ret = 2;
} else {
@@ -526,11 +524,10 @@ static int get_segment32(CPUPPCState *env, struct mmu_ctx_hash32 *ctx,
}
static int ppc_hash32_get_physical_address(CPUPPCState *env, struct mmu_ctx_hash32 *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;
@@ -541,11 +538,11 @@ static int ppc_hash32_get_physical_address(CPUPPCState *env, struct mmu_ctx_hash
/* Try to find a BAT */
if (env->nb_BATs != 0) {
- ret = ppc_hash32_get_bat(env, ctx, eaddr, rw, access_type);
+ ret = ppc_hash32_get_bat(env, ctx, eaddr, rwx);
}
if (ret < 0) {
/* We didn't match any BAT entry or don't have BATs */
- ret = get_segment32(env, ctx, eaddr, rw, access_type);
+ ret = get_segment32(env, ctx, eaddr, rwx);
}
return ret;
}
@@ -555,7 +552,9 @@ hwaddr ppc_hash32_get_phys_page_debug(CPUPPCState *env, target_ulong addr)
{
struct mmu_ctx_hash32 ctx;
- if (unlikely(ppc_hash32_get_physical_address(env, &ctx, addr, 0, ACCESS_INT)
+ /* FIXME: Will not behave sanely for direct store segments, but
+ * they're almost never used */
+ if (unlikely(ppc_hash32_get_physical_address(env, &ctx, addr, 0)
!= 0)) {
return -1;
}
@@ -563,22 +562,13 @@ hwaddr ppc_hash32_get_phys_page_debug(CPUPPCState *env, target_ulong addr)
return ctx.raddr & TARGET_PAGE_MASK;
}
-int ppc_hash32_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
+int ppc_hash32_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rwx,
int mmu_idx)
{
struct mmu_ctx_hash32 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_hash32_get_physical_address(env, &ctx, address, rw, access_type);
+ ret = ppc_hash32_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,
@@ -586,7 +576,7 @@ int ppc_hash32_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:
/* No matches in page tables or TLB */
@@ -617,7 +607,7 @@ int ppc_hash32_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;
@@ -628,7 +618,7 @@ int ppc_hash32_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;
@@ -636,7 +626,7 @@ int ppc_hash32_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
break;
case -4:
/* Direct store exception */
- switch (access_type) {
+ switch (env->access_type) {
case ACCESS_FLOAT:
/* Floating point load/store */
env->exception_index = POWERPC_EXCP_ALIGN;
@@ -648,7 +638,7 @@ int ppc_hash32_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] = 0x06000000;
} else {
env->spr[SPR_DSISR] = 0x04000000;
@@ -659,7 +649,7 @@ int ppc_hash32_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] = 0x06100000;
} else {
env->spr[SPR_DSISR] = 0x04100000;
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 2.25.1) at 2024-05-25 06:15:44 +0000