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-rw-r--r--target-sparc/helper.c589
1 files changed, 0 insertions, 589 deletions
diff --git a/target-sparc/helper.c b/target-sparc/helper.c
deleted file mode 100644
index 8f12667..0000000
--- a/target-sparc/helper.c
+++ /dev/null
@@ -1,589 +0,0 @@
-/*
- * sparc helpers
- *
- * Copyright (c) 2003-2005 Fabrice Bellard
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <stdarg.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-#include <signal.h>
-#include <assert.h>
-
-#include "cpu.h"
-#include "exec-all.h"
-
-//#define DEBUG_MMU
-
-/* Sparc MMU emulation */
-
-/* thread support */
-
-spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
-
-void cpu_lock(void)
-{
- spin_lock(&global_cpu_lock);
-}
-
-void cpu_unlock(void)
-{
- spin_unlock(&global_cpu_lock);
-}
-
-#if defined(CONFIG_USER_ONLY)
-
-int cpu_sparc_handle_mmu_fault(CPUState *env, target_ulong address, int rw,
- int is_user, int is_softmmu)
-{
- if (rw & 2)
- env->exception_index = TT_TFAULT;
- else
- env->exception_index = TT_DFAULT;
- return 1;
-}
-
-#else
-
-#ifndef TARGET_SPARC64
-/*
- * Sparc V8 Reference MMU (SRMMU)
- */
-static const int access_table[8][8] = {
- { 0, 0, 0, 0, 2, 0, 3, 3 },
- { 0, 0, 0, 0, 2, 0, 0, 0 },
- { 2, 2, 0, 0, 0, 2, 3, 3 },
- { 2, 2, 0, 0, 0, 2, 0, 0 },
- { 2, 0, 2, 0, 2, 2, 3, 3 },
- { 2, 0, 2, 0, 2, 0, 2, 0 },
- { 2, 2, 2, 0, 2, 2, 3, 3 },
- { 2, 2, 2, 0, 2, 2, 2, 0 }
-};
-
-static const int perm_table[2][8] = {
- {
- PAGE_READ,
- PAGE_READ | PAGE_WRITE,
- PAGE_READ | PAGE_EXEC,
- PAGE_READ | PAGE_WRITE | PAGE_EXEC,
- PAGE_EXEC,
- PAGE_READ | PAGE_WRITE,
- PAGE_READ | PAGE_EXEC,
- PAGE_READ | PAGE_WRITE | PAGE_EXEC
- },
- {
- PAGE_READ,
- PAGE_READ | PAGE_WRITE,
- PAGE_READ | PAGE_EXEC,
- PAGE_READ | PAGE_WRITE | PAGE_EXEC,
- PAGE_EXEC,
- PAGE_READ,
- 0,
- 0,
- }
-};
-
-int get_physical_address (CPUState *env, target_phys_addr_t *physical, int *prot,
- int *access_index, target_ulong address, int rw,
- int is_user)
-{
- int access_perms = 0;
- target_phys_addr_t pde_ptr;
- uint32_t pde;
- target_ulong virt_addr;
- int error_code = 0, is_dirty;
- unsigned long page_offset;
-
- virt_addr = address & TARGET_PAGE_MASK;
- if ((env->mmuregs[0] & MMU_E) == 0) { /* MMU disabled */
- *physical = address;
- *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- return 0;
- }
-
- *access_index = ((rw & 1) << 2) | (rw & 2) | (is_user? 0 : 1);
- *physical = 0xfffff000;
-
- /* SPARC reference MMU table walk: Context table->L1->L2->PTE */
- /* Context base + context number */
- pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);
- pde = ldl_phys(pde_ptr);
-
- /* Ctx pde */
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- return 1 << 2;
- case 2: /* L0 PTE, maybe should not happen? */
- case 3: /* Reserved */
- return 4 << 2;
- case 1: /* L0 PDE */
- pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
- pde = ldl_phys(pde_ptr);
-
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- return (1 << 8) | (1 << 2);
- case 3: /* Reserved */
- return (1 << 8) | (4 << 2);
- case 1: /* L1 PDE */
- pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
- pde = ldl_phys(pde_ptr);
-
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- return (2 << 8) | (1 << 2);
- case 3: /* Reserved */
- return (2 << 8) | (4 << 2);
- case 1: /* L2 PDE */
- pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
- pde = ldl_phys(pde_ptr);
-
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- return (3 << 8) | (1 << 2);
- case 1: /* PDE, should not happen */
- case 3: /* Reserved */
- return (3 << 8) | (4 << 2);
- case 2: /* L3 PTE */
- virt_addr = address & TARGET_PAGE_MASK;
- page_offset = (address & TARGET_PAGE_MASK) & (TARGET_PAGE_SIZE - 1);
- }
- break;
- case 2: /* L2 PTE */
- virt_addr = address & ~0x3ffff;
- page_offset = address & 0x3ffff;
- }
- break;
- case 2: /* L1 PTE */
- virt_addr = address & ~0xffffff;
- page_offset = address & 0xffffff;
- }
- }
-
- /* update page modified and dirty bits */
- is_dirty = (rw & 1) && !(pde & PG_MODIFIED_MASK);
- if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
- pde |= PG_ACCESSED_MASK;
- if (is_dirty)
- pde |= PG_MODIFIED_MASK;
- stl_phys_notdirty(pde_ptr, pde);
- }
- /* check access */
- access_perms = (pde & PTE_ACCESS_MASK) >> PTE_ACCESS_SHIFT;
- error_code = access_table[*access_index][access_perms];
- if (error_code && !((env->mmuregs[0] & MMU_NF) && is_user))
- return error_code;
-
- /* the page can be put in the TLB */
- *prot = perm_table[is_user][access_perms];
- if (!(pde & PG_MODIFIED_MASK)) {
- /* only set write access if already dirty... otherwise wait
- for dirty access */
- *prot &= ~PAGE_WRITE;
- }
-
- /* Even if large ptes, we map only one 4KB page in the cache to
- avoid filling it too fast */
- *physical = ((pde & PTE_ADDR_MASK) << 4) + page_offset;
- return error_code;
-}
-
-/* Perform address translation */
-int cpu_sparc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
- int is_user, int is_softmmu)
-{
- target_phys_addr_t paddr;
- unsigned long vaddr;
- int error_code = 0, prot, ret = 0, access_index;
-
- error_code = get_physical_address(env, &paddr, &prot, &access_index, address, rw, is_user);
- if (error_code == 0) {
- vaddr = address & TARGET_PAGE_MASK;
- paddr &= TARGET_PAGE_MASK;
-#ifdef DEBUG_MMU
- printf("Translate at 0x%lx -> 0x%lx, vaddr 0x%lx\n", (long)address, (long)paddr, (long)vaddr);
-#endif
- ret = tlb_set_page_exec(env, vaddr, paddr, prot, is_user, is_softmmu);
- return ret;
- }
-
- if (env->mmuregs[3]) /* Fault status register */
- env->mmuregs[3] = 1; /* overflow (not read before another fault) */
- env->mmuregs[3] |= (access_index << 5) | error_code | 2;
- env->mmuregs[4] = address; /* Fault address register */
-
- if ((env->mmuregs[0] & MMU_NF) || env->psret == 0) {
- // No fault mode: if a mapping is available, just override
- // permissions. If no mapping is available, redirect accesses to
- // neverland. Fake/overridden mappings will be flushed when
- // switching to normal mode.
- vaddr = address & TARGET_PAGE_MASK;
- prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- ret = tlb_set_page_exec(env, vaddr, paddr, prot, is_user, is_softmmu);
- return ret;
- } else {
- if (rw & 2)
- env->exception_index = TT_TFAULT;
- else
- env->exception_index = TT_DFAULT;
- return 1;
- }
-}
-
-target_ulong mmu_probe(CPUState *env, target_ulong address, int mmulev)
-{
- target_phys_addr_t pde_ptr;
- uint32_t pde;
-
- /* Context base + context number */
- pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);
- pde = ldl_phys(pde_ptr);
-
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- case 2: /* PTE, maybe should not happen? */
- case 3: /* Reserved */
- return 0;
- case 1: /* L1 PDE */
- if (mmulev == 3)
- return pde;
- pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
- pde = ldl_phys(pde_ptr);
-
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- case 3: /* Reserved */
- return 0;
- case 2: /* L1 PTE */
- return pde;
- case 1: /* L2 PDE */
- if (mmulev == 2)
- return pde;
- pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
- pde = ldl_phys(pde_ptr);
-
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- case 3: /* Reserved */
- return 0;
- case 2: /* L2 PTE */
- return pde;
- case 1: /* L3 PDE */
- if (mmulev == 1)
- return pde;
- pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
- pde = ldl_phys(pde_ptr);
-
- switch (pde & PTE_ENTRYTYPE_MASK) {
- default:
- case 0: /* Invalid */
- case 1: /* PDE, should not happen */
- case 3: /* Reserved */
- return 0;
- case 2: /* L3 PTE */
- return pde;
- }
- }
- }
- }
- return 0;
-}
-
-#ifdef DEBUG_MMU
-void dump_mmu(CPUState *env)
-{
- target_ulong va, va1, va2;
- unsigned int n, m, o;
- target_phys_addr_t pde_ptr, pa;
- uint32_t pde;
-
- printf("MMU dump:\n");
- pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);
- pde = ldl_phys(pde_ptr);
- printf("Root ptr: " TARGET_FMT_lx ", ctx: %d\n", env->mmuregs[1] << 4, env->mmuregs[2]);
- for (n = 0, va = 0; n < 256; n++, va += 16 * 1024 * 1024) {
- pde_ptr = mmu_probe(env, va, 2);
- if (pde_ptr) {
- pa = cpu_get_phys_page_debug(env, va);
- printf("VA: " TARGET_FMT_lx ", PA: " TARGET_FMT_lx " PDE: " TARGET_FMT_lx "\n", va, pa, pde_ptr);
- for (m = 0, va1 = va; m < 64; m++, va1 += 256 * 1024) {
- pde_ptr = mmu_probe(env, va1, 1);
- if (pde_ptr) {
- pa = cpu_get_phys_page_debug(env, va1);
- printf(" VA: " TARGET_FMT_lx ", PA: " TARGET_FMT_lx " PDE: " TARGET_FMT_lx "\n", va1, pa, pde_ptr);
- for (o = 0, va2 = va1; o < 64; o++, va2 += 4 * 1024) {
- pde_ptr = mmu_probe(env, va2, 0);
- if (pde_ptr) {
- pa = cpu_get_phys_page_debug(env, va2);
- printf(" VA: " TARGET_FMT_lx ", PA: " TARGET_FMT_lx " PTE: " TARGET_FMT_lx "\n", va2, pa, pde_ptr);
- }
- }
- }
- }
- }
- }
- printf("MMU dump ends\n");
-}
-#endif /* DEBUG_MMU */
-
-#else /* !TARGET_SPARC64 */
-/*
- * UltraSparc IIi I/DMMUs
- */
-static int get_physical_address_data(CPUState *env, target_phys_addr_t *physical, int *prot,
- int *access_index, target_ulong address, int rw,
- int is_user)
-{
- target_ulong mask;
- unsigned int i;
-
- if ((env->lsu & DMMU_E) == 0) { /* DMMU disabled */
- *physical = address;
- *prot = PAGE_READ | PAGE_WRITE;
- return 0;
- }
-
- for (i = 0; i < 64; i++) {
- switch ((env->dtlb_tte[i] >> 61) & 3) {
- default:
- case 0x0: // 8k
- mask = 0xffffffffffffe000ULL;
- break;
- case 0x1: // 64k
- mask = 0xffffffffffff0000ULL;
- break;
- case 0x2: // 512k
- mask = 0xfffffffffff80000ULL;
- break;
- case 0x3: // 4M
- mask = 0xffffffffffc00000ULL;
- break;
- }
- // ctx match, vaddr match?
- if (env->dmmuregs[1] == (env->dtlb_tag[i] & 0x1fff) &&
- (address & mask) == (env->dtlb_tag[i] & ~0x1fffULL)) {
- // valid, access ok?
- if ((env->dtlb_tte[i] & 0x8000000000000000ULL) == 0 ||
- ((env->dtlb_tte[i] & 0x4) && is_user) ||
- (!(env->dtlb_tte[i] & 0x2) && (rw == 1))) {
- if (env->dmmuregs[3]) /* Fault status register */
- env->dmmuregs[3] = 2; /* overflow (not read before another fault) */
- env->dmmuregs[3] |= (is_user << 3) | ((rw == 1) << 2) | 1;
- env->dmmuregs[4] = address; /* Fault address register */
- env->exception_index = TT_DFAULT;
-#ifdef DEBUG_MMU
- printf("DFAULT at 0x%" PRIx64 "\n", address);
-#endif
- return 1;
- }
- *physical = (env->dtlb_tte[i] & mask & 0x1fffffff000ULL) + (address & ~mask & 0x1fffffff000ULL);
- *prot = PAGE_READ;
- if (env->dtlb_tte[i] & 0x2)
- *prot |= PAGE_WRITE;
- return 0;
- }
- }
-#ifdef DEBUG_MMU
- printf("DMISS at 0x%" PRIx64 "\n", address);
-#endif
- env->exception_index = TT_DMISS;
- return 1;
-}
-
-static int get_physical_address_code(CPUState *env, target_phys_addr_t *physical, int *prot,
- int *access_index, target_ulong address, int rw,
- int is_user)
-{
- target_ulong mask;
- unsigned int i;
-
- if ((env->lsu & IMMU_E) == 0) { /* IMMU disabled */
- *physical = address;
- *prot = PAGE_EXEC;
- return 0;
- }
-
- for (i = 0; i < 64; i++) {
- switch ((env->itlb_tte[i] >> 61) & 3) {
- default:
- case 0x0: // 8k
- mask = 0xffffffffffffe000ULL;
- break;
- case 0x1: // 64k
- mask = 0xffffffffffff0000ULL;
- break;
- case 0x2: // 512k
- mask = 0xfffffffffff80000ULL;
- break;
- case 0x3: // 4M
- mask = 0xffffffffffc00000ULL;
- break;
- }
- // ctx match, vaddr match?
- if (env->dmmuregs[1] == (env->itlb_tag[i] & 0x1fff) &&
- (address & mask) == (env->itlb_tag[i] & ~0x1fffULL)) {
- // valid, access ok?
- if ((env->itlb_tte[i] & 0x8000000000000000ULL) == 0 ||
- ((env->itlb_tte[i] & 0x4) && is_user)) {
- if (env->immuregs[3]) /* Fault status register */
- env->immuregs[3] = 2; /* overflow (not read before another fault) */
- env->immuregs[3] |= (is_user << 3) | 1;
- env->exception_index = TT_TFAULT;
-#ifdef DEBUG_MMU
- printf("TFAULT at 0x%" PRIx64 "\n", address);
-#endif
- return 1;
- }
- *physical = (env->itlb_tte[i] & mask & 0x1fffffff000ULL) + (address & ~mask & 0x1fffffff000ULL);
- *prot = PAGE_EXEC;
- return 0;
- }
- }
-#ifdef DEBUG_MMU
- printf("TMISS at 0x%" PRIx64 "\n", address);
-#endif
- env->exception_index = TT_TMISS;
- return 1;
-}
-
-int get_physical_address(CPUState *env, target_phys_addr_t *physical, int *prot,
- int *access_index, target_ulong address, int rw,
- int is_user)
-{
- if (rw == 2)
- return get_physical_address_code(env, physical, prot, access_index, address, rw, is_user);
- else
- return get_physical_address_data(env, physical, prot, access_index, address, rw, is_user);
-}
-
-/* Perform address translation */
-int cpu_sparc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
- int is_user, int is_softmmu)
-{
- target_ulong virt_addr, vaddr;
- target_phys_addr_t paddr;
- int error_code = 0, prot, ret = 0, access_index;
-
- error_code = get_physical_address(env, &paddr, &prot, &access_index, address, rw, is_user);
- if (error_code == 0) {
- virt_addr = address & TARGET_PAGE_MASK;
- vaddr = virt_addr + ((address & TARGET_PAGE_MASK) & (TARGET_PAGE_SIZE - 1));
-#ifdef DEBUG_MMU
- printf("Translate at 0x%" PRIx64 " -> 0x%" PRIx64 ", vaddr 0x%" PRIx64 "\n", address, paddr, vaddr);
-#endif
- ret = tlb_set_page_exec(env, vaddr, paddr, prot, is_user, is_softmmu);
- return ret;
- }
- // XXX
- return 1;
-}
-
-#ifdef DEBUG_MMU
-void dump_mmu(CPUState *env)
-{
- unsigned int i;
- const char *mask;
-
- printf("MMU contexts: Primary: %" PRId64 ", Secondary: %" PRId64 "\n", env->dmmuregs[1], env->dmmuregs[2]);
- if ((env->lsu & DMMU_E) == 0) {
- printf("DMMU disabled\n");
- } else {
- printf("DMMU dump:\n");
- for (i = 0; i < 64; i++) {
- switch ((env->dtlb_tte[i] >> 61) & 3) {
- default:
- case 0x0:
- mask = " 8k";
- break;
- case 0x1:
- mask = " 64k";
- break;
- case 0x2:
- mask = "512k";
- break;
- case 0x3:
- mask = " 4M";
- break;
- }
- if ((env->dtlb_tte[i] & 0x8000000000000000ULL) != 0) {
- printf("VA: " TARGET_FMT_lx ", PA: " TARGET_FMT_lx ", %s, %s, %s, %s, ctx %" PRId64 "\n",
- env->dtlb_tag[i] & ~0x1fffULL,
- env->dtlb_tte[i] & 0x1ffffffe000ULL,
- mask,
- env->dtlb_tte[i] & 0x4? "priv": "user",
- env->dtlb_tte[i] & 0x2? "RW": "RO",
- env->dtlb_tte[i] & 0x40? "locked": "unlocked",
- env->dtlb_tag[i] & 0x1fffULL);
- }
- }
- }
- if ((env->lsu & IMMU_E) == 0) {
- printf("IMMU disabled\n");
- } else {
- printf("IMMU dump:\n");
- for (i = 0; i < 64; i++) {
- switch ((env->itlb_tte[i] >> 61) & 3) {
- default:
- case 0x0:
- mask = " 8k";
- break;
- case 0x1:
- mask = " 64k";
- break;
- case 0x2:
- mask = "512k";
- break;
- case 0x3:
- mask = " 4M";
- break;
- }
- if ((env->itlb_tte[i] & 0x8000000000000000ULL) != 0) {
- printf("VA: " TARGET_FMT_lx ", PA: " TARGET_FMT_lx ", %s, %s, %s, ctx %" PRId64 "\n",
- env->itlb_tag[i] & ~0x1fffULL,
- env->itlb_tte[i] & 0x1ffffffe000ULL,
- mask,
- env->itlb_tte[i] & 0x4? "priv": "user",
- env->itlb_tte[i] & 0x40? "locked": "unlocked",
- env->itlb_tag[i] & 0x1fffULL);
- }
- }
- }
-}
-#endif /* DEBUG_MMU */
-
-#endif /* TARGET_SPARC64 */
-#endif /* !CONFIG_USER_ONLY */
-
-void memcpy32(target_ulong *dst, const target_ulong *src)
-{
- dst[0] = src[0];
- dst[1] = src[1];
- dst[2] = src[2];
- dst[3] = src[3];
- dst[4] = src[4];
- dst[5] = src[5];
- dst[6] = src[6];
- dst[7] = src[7];
-}
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