Revision f51589da
| b/target-i386/helper2.c | ||
|---|---|---|
| 742 | 742 |
#else |
| 743 | 743 |
target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
| 744 | 744 |
{
|
| 745 |
uint8_t *pde_ptr, *pte_ptr;
|
|
| 745 |
uint32_t pde_addr, pte_addr;
|
|
| 746 | 746 |
uint32_t pde, pte, paddr, page_offset, page_size; |
| 747 | 747 |
|
| 748 |
if (!(env->cr[0] & CR0_PG_MASK)) {
|
|
| 749 |
pte = addr; |
|
| 750 |
page_size = 4096; |
|
| 751 |
} else {
|
|
| 752 |
/* page directory entry */ |
|
| 753 |
pde_ptr = phys_ram_base + |
|
| 754 |
(((env->cr[3] & ~0xfff) + ((addr >> 20) & ~3)) & env->a20_mask); |
|
| 755 |
pde = ldl_raw(pde_ptr); |
|
| 756 |
if (!(pde & PG_PRESENT_MASK)) |
|
| 748 |
if (env->cr[4] & CR4_PAE_MASK) {
|
|
| 749 |
uint32_t pdpe_addr, pde_addr, pte_addr; |
|
| 750 |
uint32_t pdpe; |
|
| 751 |
|
|
| 752 |
/* XXX: we only use 32 bit physical addresses */ |
|
| 753 |
#ifdef TARGET_X86_64 |
|
| 754 |
if (env->hflags & HF_LMA_MASK) {
|
|
| 755 |
uint32_t pml4e_addr, pml4e; |
|
| 756 |
int32_t sext; |
|
| 757 |
|
|
| 758 |
/* test virtual address sign extension */ |
|
| 759 |
sext = (int64_t)addr >> 47; |
|
| 760 |
if (sext != 0 && sext != -1) |
|
| 761 |
return -1; |
|
| 762 |
|
|
| 763 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
|
| 764 |
env->a20_mask; |
|
| 765 |
pml4e = ldl_phys_aligned(pml4e_addr); |
|
| 766 |
if (!(pml4e & PG_PRESENT_MASK)) |
|
| 767 |
return -1; |
|
| 768 |
|
|
| 769 |
pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & |
|
| 770 |
env->a20_mask; |
|
| 771 |
pdpe = ldl_phys_aligned(pdpe_addr); |
|
| 772 |
if (!(pdpe & PG_PRESENT_MASK)) |
|
| 773 |
return -1; |
|
| 774 |
} else |
|
| 775 |
#endif |
|
| 776 |
{
|
|
| 777 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 30) << 3)) & |
|
| 778 |
env->a20_mask; |
|
| 779 |
pdpe = ldl_phys_aligned(pdpe_addr); |
|
| 780 |
if (!(pdpe & PG_PRESENT_MASK)) |
|
| 781 |
return -1; |
|
| 782 |
} |
|
| 783 |
|
|
| 784 |
pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & |
|
| 785 |
env->a20_mask; |
|
| 786 |
pde = ldl_phys_aligned(pde_addr); |
|
| 787 |
if (!(pde & PG_PRESENT_MASK)) {
|
|
| 757 | 788 |
return -1; |
| 758 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
|
|
| 759 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
|
| 760 |
page_size = 4096 * 1024; |
|
| 789 |
} |
|
| 790 |
if (pde & PG_PSE_MASK) {
|
|
| 791 |
/* 2 MB page */ |
|
| 792 |
page_size = 2048 * 1024; |
|
| 793 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
|
| 794 |
} else {
|
|
| 795 |
/* 4 KB page */ |
|
| 796 |
pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & |
|
| 797 |
env->a20_mask; |
|
| 798 |
page_size = 4096; |
|
| 799 |
pte = ldl_phys_aligned(pte_addr); |
|
| 800 |
} |
|
| 801 |
} else {
|
|
| 802 |
if (!(env->cr[0] & CR0_PG_MASK)) {
|
|
| 803 |
pte = addr; |
|
| 804 |
page_size = 4096; |
|
| 761 | 805 |
} else {
|
| 762 | 806 |
/* page directory entry */ |
| 763 |
pte_ptr = phys_ram_base + |
|
| 764 |
(((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask); |
|
| 765 |
pte = ldl_raw(pte_ptr); |
|
| 766 |
if (!(pte & PG_PRESENT_MASK)) |
|
| 807 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & ~3)) & env->a20_mask; |
|
| 808 |
pde = ldl_phys_aligned(pde_addr); |
|
| 809 |
if (!(pde & PG_PRESENT_MASK)) |
|
| 767 | 810 |
return -1; |
| 768 |
page_size = 4096; |
|
| 811 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
|
|
| 812 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
|
| 813 |
page_size = 4096 * 1024; |
|
| 814 |
} else {
|
|
| 815 |
/* page directory entry */ |
|
| 816 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
|
| 817 |
pte = ldl_phys_aligned(pte_addr); |
|
| 818 |
if (!(pte & PG_PRESENT_MASK)) |
|
| 819 |
return -1; |
|
| 820 |
page_size = 4096; |
|
| 821 |
} |
|
| 769 | 822 |
} |
| 823 |
pte = pte & env->a20_mask; |
|
| 770 | 824 |
} |
| 771 |
pte = pte & env->a20_mask; |
|
| 825 |
|
|
| 772 | 826 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1); |
| 773 | 827 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 774 | 828 |
return paddr; |
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