diff options
| -rw-r--r-- | target-i386/cpu.h | 1 | ||||
| -rw-r--r-- | target-i386/helper.c | 13 |
2 files changed, 8 insertions, 6 deletions
diff --git a/target-i386/cpu.h b/target-i386/cpu.h index 196b0c5..36e3d29 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -241,6 +241,7 @@ #define PG_DIRTY_MASK (1 << PG_DIRTY_BIT) #define PG_PSE_MASK (1 << PG_PSE_BIT) #define PG_GLOBAL_MASK (1 << PG_GLOBAL_BIT) +#define PG_HI_USER_MASK 0x7ff0000000000000LL #define PG_NX_MASK (1LL << PG_NX_BIT) #define PG_ERROR_W_BIT 1 diff --git a/target-i386/helper.c b/target-i386/helper.c index af6bba2..f4f3c27 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -885,8 +885,8 @@ target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) if (!(pml4e & PG_PRESENT_MASK)) return -1; - pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & - env->a20_mask; + pdpe_addr = ((pml4e & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) + + (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask; pdpe = ldq_phys(pdpe_addr); if (!(pdpe & PG_PRESENT_MASK)) return -1; @@ -900,8 +900,8 @@ target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) return -1; } - pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & - env->a20_mask; + pde_addr = ((pdpe & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) + + (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask; pde = ldq_phys(pde_addr); if (!(pde & PG_PRESENT_MASK)) { return -1; @@ -912,11 +912,12 @@ target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ } else { /* 4 KB page */ - pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & - env->a20_mask; + pte_addr = ((pde & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) + + (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask; page_size = 4096; pte = ldq_phys(pte_addr); } + pte &= ~(PG_NX_MASK | PG_HI_USER_MASK); if (!(pte & PG_PRESENT_MASK)) return -1; } else { |
