Note that env->active_tc.PC is removed from the qemu_log as that value
is garbage. The PC isn't recovered until cpu_restore_state, called from
cpu_loop_exit_restore, called from do_raise_exception_err.
Cc: Aleksandar Markovic <amarko...@wavecomp.com>
Cc: Aleksandar Rikalo <arik...@wavecomp.com>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
target/mips/internal.h | 5 +-
target/mips/cpu.c | 5 +-
target/mips/helper.c | 115 +++++++++++++++++++---------------------
target/mips/op_helper.c | 15 ------
4 files changed, 61 insertions(+), 79 deletions(-)
diff --git a/target/mips/internal.h b/target/mips/internal.h
index 8f6fc919d5..5ec9d0bd65 100644
--- a/target/mips/internal.h
+++ b/target/mips/internal.h
@@ -203,8 +203,9 @@ void cpu_mips_start_count(CPUMIPSState *env);
void cpu_mips_stop_count(CPUMIPSState *env);
/* helper.c */
-int mips_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int size, int rw,
- int mmu_idx);
+bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+ MMUAccessType access_type, int mmu_idx,
+ bool probe, uintptr_t retaddr);
/* op_helper.c */
uint32_t float_class_s(uint32_t arg, float_status *fst);
diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index e217fb3e36..ebdb834b97 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -197,9 +197,8 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
cc->synchronize_from_tb = mips_cpu_synchronize_from_tb;
cc->gdb_read_register = mips_cpu_gdb_read_register;
cc->gdb_write_register = mips_cpu_gdb_write_register;
-#ifdef CONFIG_USER_ONLY
- cc->handle_mmu_fault = mips_cpu_handle_mmu_fault;
-#else
+ cc->tlb_fill = mips_cpu_tlb_fill;
+#ifndef CONFIG_USER_ONLY
cc->do_unassigned_access = mips_cpu_unassigned_access;
cc->do_unaligned_access = mips_cpu_do_unaligned_access;
cc->get_phys_page_debug = mips_cpu_get_phys_page_debug;
diff --git a/target/mips/helper.c b/target/mips/helper.c
index c44cdca3b5..7fe0ba4754 100644
--- a/target/mips/helper.c
+++ b/target/mips/helper.c
@@ -874,85 +874,82 @@ refill:
#endif
#endif
-int mips_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
- int mmu_idx)
+bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+ MMUAccessType access_type, int mmu_idx,
+ bool probe, uintptr_t retaddr)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
-#if !defined(CONFIG_USER_ONLY)
+ int ret = TLBRET_NOMATCH;
+
+#ifndef CONFIG_USER_ONLY
hwaddr physical;
int prot;
- int access_type;
-#endif
- int ret = 0;
+ int mips_access_type = ACCESS_INT;
-#if 0
- log_cpu_state(cs, 0);
-#endif
qemu_log_mask(CPU_LOG_MMU,
- "%s pc " TARGET_FMT_lx " ad %" VADDR_PRIx " rw %d mmu_idx %d\n",
- __func__, env->active_tc.PC, address, rw, mmu_idx);
+ "%s ad %" VADDR_PRIx " rw %d mmu_idx %d\n",
+ __func__, address, access_type, mmu_idx);
/* data access */
-#if !defined(CONFIG_USER_ONLY)
/* XXX: put correct access by using cpu_restore_state() correctly */
- access_type = ACCESS_INT;
- ret = get_physical_address(env, &physical, &prot,
- address, rw, access_type, mmu_idx);
- switch (ret) {
- case TLBRET_MATCH:
+ ret = get_physical_address(env, &physical, &prot, address,
+ access_type, mips_access_type, mmu_idx);
+ if (ret == TLBRET_MATCH) {
qemu_log_mask(CPU_LOG_MMU,
"%s address=%" VADDR_PRIx " physical " TARGET_FMT_plx
" prot %d\n", __func__, address, physical, prot);
- break;
- default:
- qemu_log_mask(CPU_LOG_MMU,
- "%s address=%" VADDR_PRIx " ret %d\n", __func__, address,
- ret);
- break;
- }
- if (ret == TLBRET_MATCH) {
tlb_set_page(cs, address & TARGET_PAGE_MASK,
physical & TARGET_PAGE_MASK, prot | PAGE_EXEC,
mmu_idx, TARGET_PAGE_SIZE);
- ret = 0;
- } else if (ret < 0)
-#endif
- {
-#if !defined(CONFIG_USER_ONLY)
-#if !defined(TARGET_MIPS64)
- if ((ret == TLBRET_NOMATCH) && (env->tlb->nb_tlb > 1)) {
- /*
- * Memory reads during hardware page table walking are performed
- * as if they were kernel-mode load instructions.
- */
- int mode = (env->hflags & MIPS_HFLAG_KSU);
- bool ret_walker;
- env->hflags &= ~MIPS_HFLAG_KSU;
- ret_walker = page_table_walk_refill(env, address, rw, mmu_idx);
- env->hflags |= mode;
- if (ret_walker) {
- ret = get_physical_address(env, &physical, &prot,
- address, rw, access_type, mmu_idx);
- if (ret == TLBRET_MATCH) {
- tlb_set_page(cs, address & TARGET_PAGE_MASK,
- physical & TARGET_PAGE_MASK, prot | PAGE_EXEC,
- mmu_idx, TARGET_PAGE_SIZE);
- ret = 0;
- return ret;
- }
- }
- }
-#endif
-#endif
- raise_mmu_exception(env, address, rw, ret);
- ret = 1;
+ return true;
}
- return ret;
+ qemu_log_mask(CPU_LOG_MMU, "%s address=%" VADDR_PRIx " ret %d\n",
+ __func__, address, ret);
+
+#ifndef TARGET_MIPS64
+ if ((ret == TLBRET_NOMATCH) && (env->tlb->nb_tlb > 1)) {
+ /*
+ * Memory reads during hardware page table walking are performed
+ * as if they were kernel-mode load instructions.
+ */
+ int mode = (env->hflags & MIPS_HFLAG_KSU);
+ bool ret_walker;
+
+ env->hflags &= ~MIPS_HFLAG_KSU;
+ ret_walker = page_table_walk_refill(env, address, access_type,
mmu_idx);
+ env->hflags |= mode;
+
+ if (ret_walker) {
+ ret = get_physical_address(env, &physical, &prot, address,
+ access_type, mips_access_type, mmu_idx);
+ if (ret == TLBRET_MATCH) {
+ tlb_set_page(cs, address & TARGET_PAGE_MASK,
+ physical & TARGET_PAGE_MASK, prot | PAGE_EXEC,
+ mmu_idx, TARGET_PAGE_SIZE);
+ return true;
+ }
+ }
+ }
+#endif
+
+ if (probe) {
+ return false;
+ }
+#endif /* !CONFIG_USER_ONLY */
+
+ raise_mmu_exception(env, address, access_type, ret);
+ do_raise_exception_err(env, cs->exception_index, env->error_code, retaddr);
+}
+
+#ifndef CONFIG_USER_ONLY
+void tlb_fill(CPUState *cs, target_ulong addr, int size,
+ MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
+{
+ mips_cpu_tlb_fill(cs, addr, size, access_type, mmu_idx, false, retaddr);
}
-#if !defined(CONFIG_USER_ONLY)
hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address, int
rw)
{
hwaddr physical;
diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c
index 0f272a5b93..6d86912958 100644
--- a/target/mips/op_helper.c
+++ b/target/mips/op_helper.c
@@ -2669,21 +2669,6 @@ void mips_cpu_do_unaligned_access(CPUState *cs, vaddr
addr,
do_raise_exception_err(env, excp, error_code, retaddr);
}
-void tlb_fill(CPUState *cs, target_ulong addr, int size,
- MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
-{
- int ret;
-
- ret = mips_cpu_handle_mmu_fault(cs, addr, size, access_type, mmu_idx);
- if (ret) {
- MIPSCPU *cpu = MIPS_CPU(cs);
- CPUMIPSState *env = &cpu->env;
-
- do_raise_exception_err(env, cs->exception_index,
- env->error_code, retaddr);
- }
-}
-
void mips_cpu_unassigned_access(CPUState *cs, hwaddr addr,
bool is_write, bool is_exec, int unused,
unsigned size)
--
2.17.1
