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/*
* 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 */
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