diff options
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 04beaebc98..11ca8649b5 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -811,7 +811,6 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) CPUX86State *env = &cpu->env; target_ulong pde_addr, pte_addr; uint64_t pte; - hwaddr paddr; uint32_t page_offset; int page_size; @@ -829,25 +828,24 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) /* test virtual address sign extension */ sext = (int64_t)addr >> 47; - if (sext != 0 && sext != -1) + if (sext != 0 && sext != -1) { return -1; - + } pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & env->a20_mask; pml4e = ldq_phys(cs->as, pml4e_addr); - if (!(pml4e & PG_PRESENT_MASK)) + if (!(pml4e & PG_PRESENT_MASK)) { return -1; - - pdpe_addr = ((pml4e & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) + + } + pdpe_addr = ((pml4e & PG_ADDRESS_MASK) + (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask; pdpe = ldq_phys(cs->as, pdpe_addr); - if (!(pdpe & PG_PRESENT_MASK)) + if (!(pdpe & PG_PRESENT_MASK)) { return -1; - + } if (pdpe & PG_PSE_MASK) { page_size = 1024 * 1024 * 1024; - pte = pdpe & ~( (page_size - 1) & ~0xfff); - pte &= ~(PG_NX_MASK | PG_HI_USER_MASK); + pte = pdpe; goto out; } @@ -861,7 +859,7 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) return -1; } - pde_addr = ((pdpe & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) + + pde_addr = ((pdpe & PG_ADDRESS_MASK) + (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask; pde = ldq_phys(cs->as, pde_addr); if (!(pde & PG_PRESENT_MASK)) { @@ -870,17 +868,17 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) if (pde & PG_PSE_MASK) { /* 2 MB page */ page_size = 2048 * 1024; - pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ + pte = pde; } else { /* 4 KB page */ - pte_addr = ((pde & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) + + pte_addr = ((pde & PG_ADDRESS_MASK) + (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask; page_size = 4096; pte = ldq_phys(cs->as, pte_addr); } - pte &= ~(PG_NX_MASK | PG_HI_USER_MASK); - if (!(pte & PG_PRESENT_MASK)) + if (!(pte & PG_PRESENT_MASK)) { return -1; + } } else { uint32_t pde; @@ -896,8 +894,9 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) /* page directory entry */ pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; pte = ldl_phys(cs->as, pte_addr); - if (!(pte & PG_PRESENT_MASK)) + if (!(pte & PG_PRESENT_MASK)) { return -1; + } page_size = 4096; } pte = pte & env->a20_mask; @@ -906,9 +905,9 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) #ifdef TARGET_X86_64 out: #endif + pte &= PG_ADDRESS_MASK & ~(page_size - 1); page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1); - paddr = (pte & TARGET_PAGE_MASK) + page_offset; - return paddr; + return pte | page_offset; } void hw_breakpoint_insert(CPUX86State *env, int index) |