diff options
Diffstat (limited to 'arch/sparc64.c')
| -rw-r--r-- | arch/sparc64.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/arch/sparc64.c b/arch/sparc64.c new file mode 100644 index 0000000..1cfaa85 --- /dev/null +++ b/arch/sparc64.c @@ -0,0 +1,236 @@ +/* + * Copyright (C) 2014, 2017 Oracle and/or its affiliates + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation (version 2 of the License). + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifdef __sparc64__ + +#include "../elf_info.h" +#include "../makedumpfile.h" +#include "../print_info.h" + +int get_versiondep_info_sparc64(void) +{ + info->section_size_bits = _SECTION_SIZE_BITS; + + if (info->kernel_version >= KERNEL_VERSION(3, 8, 13)) + info->max_physmem_bits = _MAX_PHYSMEM_BITS_L4; + else { + info->max_physmem_bits = _MAX_PHYSMEM_BITS_L3; + info->flag_vmemmap = TRUE; + info->vmemmap_start = VMEMMAP_BASE_SPARC64; + info->vmemmap_end = VMEMMAP_BASE_SPARC64 + + ((1UL << (info->max_physmem_bits - PAGE_SHIFT)) * + SIZE(page)); + } + + return TRUE; +} + +int get_phys_base_sparc64(void) +{ + /* Ideally we'd search the pt_load entries until we found one + * containing KVBASE (_stext), but get_symbol_info hasn't been + * called yet. We'll just go with the first entry. + */ + unsigned long long phys_start; + unsigned long long virt_start; + unsigned long long virt_end; + + if (get_pt_load(0, &phys_start, NULL, &virt_start, &virt_end)) { + info->phys_base = phys_start & ~KVBASE_MASK; + return TRUE; + } + ERRMSG("Can't find kernel segment\n"); + return FALSE; +} + +int is_vmalloc_addr_sparc64(unsigned long vaddr) +{ + return (vaddr >= VMALLOC_START_SPARC64); +} + +int is_vmemmap_addr_sparc64(unsigned long vaddr) +{ + if (info->flag_vmemmap && + (vaddr >= info->vmemmap_start) && (vaddr < info->vmemmap_end)) + return TRUE; + + return FALSE; +} + +unsigned long vmemmap_to_phys_sparc64(unsigned long vaddr) +{ + unsigned long vmemmap_table; + unsigned long offset = vaddr - info->vmemmap_start; + unsigned long chunk_offset = offset & ~VMEMMAP_CHUNK_MASK; + unsigned long chunk; + unsigned long index; + unsigned long pte; + unsigned long pte_paddr; + unsigned long pte_offset; + + vmemmap_table = SYMBOL(vmemmap_table); + if (vmemmap_table == NOT_FOUND_SYMBOL) { + ERRMSG("Can't get symbol of vmemmap_table\n"); + return NOT_PADDR; + } + + index = offset >> NR_CHUNKS_SHIFT; + if (!readmem(VADDR, vmemmap_table + (index * sizeof(long)), + &pte_paddr, sizeof(long))) { + ERRMSG("Error reading 1st level vmemmap_table\n"); + return NOT_PADDR; + } + chunk = (vaddr & ~NR_CHUNKS_MASK) >> VMEMMAP_CHUNK_SHIFT; + pte_offset = chunk * sizeof(pte); + pte_paddr += pte_offset; + if (!readmem(PADDR, pte_paddr, &pte, sizeof(pte))) { + ERRMSG("Error reading 2nd level vmemmap_table\n"); + return NOT_PADDR; + } + return pte_to_pa(pte) | chunk_offset; +} + +unsigned long vtop3_sparc64(unsigned long vaddr) +{ + unsigned long pgdir, pgd_paddr, pmd_paddr, pte_paddr; + unsigned long pgd_pte, pmd_pte, pte; + + pgdir = SYMBOL(swapper_pg_dir); + if (pgdir == NOT_FOUND_SYMBOL) { + ERRMSG("Can't get symbol of swapper_pg_dir\n"); + return NOT_PADDR; + } + + pgd_paddr = pgd_offset_l3(pgdir, vaddr); + if (!readmem(VADDR, pgd_paddr, &pgd_pte, sizeof pgd_pte)) { + ERRMSG("Can't get pgd_pte, pgd_paddr = 0x%lx\n", pgd_paddr); + return NOT_PADDR; + } + if (pgd_none(pgd_pte)) { + ERRMSG("Can't get a valid pgd_pte.\n"); + return NOT_PADDR; + } + + pmd_paddr = pmd_offset(pgd_pte, vaddr); + if (!readmem(PADDR, pmd_paddr, &pmd_pte, sizeof pmd_pte)) { + ERRMSG("Can't get pmd_pte, pmd_paddr = 0x%lx\n", pmd_paddr); + return NOT_PADDR; + } + if (pmd_none(pmd_pte)) { + ERRMSG("Can't get a valid pmd_pte.\n"); + return NOT_PADDR; + } + + if (pmd_large(pmd_pte)) + return pte_to_pa(pmd_pte) + (vaddr & ~PMD_MASK); + + pte_paddr = pte_offset(pmd_pte, vaddr); + if (!readmem(PADDR, pte_paddr, &pte, sizeof pte)) { + ERRMSG("Can't get pte, pte_paddr = 0x%lx\n", pmd_paddr); + return NOT_PADDR; + } + if (!pte_present(pte)) { + ERRMSG("Can't get a valid pte.\n"); + return NOT_PADDR; + } + + return pte_to_pa(pte) + (vaddr & ~PAGE_MASK); +} + +unsigned long vtop4_sparc64(unsigned long vaddr) +{ + unsigned long pgdir, pgd_paddr, pud_paddr, pmd_paddr, pte_paddr; + unsigned long pgd_pte, pud_pte, pmd_pte, pte; + + pgdir = SYMBOL(swapper_pg_dir); + if (pgdir == NOT_FOUND_SYMBOL) { + ERRMSG("Can't get symbol of swapper_pg_dir\n"); + return NOT_PADDR; + } + + pgd_paddr = pgd_offset_l4(pgdir, vaddr); + if (!readmem(VADDR, pgd_paddr, &pgd_pte, sizeof pgd_pte)) { + ERRMSG("Can't get pgd_pte, pgd_paddr = 0x%lx\n", pgd_paddr); + return NOT_PADDR; + } + if (pgd_none(pgd_pte)) { + ERRMSG("Can't get a valid pgd_pte.\n"); + return NOT_PADDR; + } + + pud_paddr = pud_offset(pgd_pte, vaddr); + if (!readmem(PADDR, pud_paddr, &pud_pte, sizeof pud_pte)) { + ERRMSG("Can't get pud_pte, pud_paddr = 0x%lx\n", pud_paddr); + return NOT_PADDR; + } + if (pud_none(pud_pte)) { + ERRMSG("Can't get a valid pud_pte.\n"); + return NOT_PADDR; + } + + if (pud_large(pud_pte)) + return pte_to_pa(pud_pte) + (vaddr & ~PUD_MASK); + + pmd_paddr = pmd_offset(pud_pte, vaddr); + if (!readmem(PADDR, pmd_paddr, &pmd_pte, sizeof pmd_pte)) { + ERRMSG("Can't get pmd_pte, pmd_paddr = 0x%lx\n", pmd_paddr); + return NOT_PADDR; + } + if (pmd_none(pmd_pte)) { + ERRMSG("Can't get a valid pmd_pte.\n"); + return NOT_PADDR; + } + + if (pmd_large(pmd_pte)) + return pte_to_pa(pmd_pte) + (vaddr & ~PMD_MASK); + + pte_paddr = pte_offset(pmd_pte, vaddr); + if (!readmem(PADDR, pte_paddr, &pte, sizeof pte)) { + ERRMSG("Can't get pte, pte_paddr = 0x%lx\n", pmd_paddr); + return NOT_PADDR; + } + if (!pte_present(pte)) { + ERRMSG("Can't get a valid pte.\n"); + return NOT_PADDR; + } + + return pte_to_pa(pte) + (vaddr & ~PAGE_MASK); +} + +unsigned long long vaddr_to_paddr_sparc64(unsigned long vaddr) +{ + unsigned long paddr; + + paddr = vaddr_to_paddr_general(vaddr); + if (paddr != NOT_PADDR) + return paddr; + + if (is_vmemmap_addr_sparc64(vaddr)) + paddr = vmemmap_to_phys_sparc64(vaddr); + else if (is_vmalloc_addr_sparc64(vaddr)) { + if (info->kernel_version >= KERNEL_VERSION(3, 8, 13)) + paddr = vtop4_sparc64(vaddr); + else + paddr = vtop3_sparc64(vaddr); + } + if (paddr == NOT_PADDR) + ERRMSG("vaddr not mapped: 0x%lx\n", vaddr); + + return paddr; +} + +#endif /* sparc64 */ |