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ia64.c
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ia64.c
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/* ia64.c - core analysis suite
*
* Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
* Copyright (C) 2002-2013 David Anderson
* Copyright (C) 2002-2013 Red Hat, Inc. All rights reserved.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#ifdef IA64
#include "defs.h"
#include "xen_hyper_defs.h"
#include <sys/prctl.h>
static int ia64_verify_symbol(const char *, ulong, char);
static int ia64_eframe_search(struct bt_info *);
static void ia64_back_trace_cmd(struct bt_info *);
static void ia64_old_unwind(struct bt_info *);
static void ia64_old_unwind_init(void);
static void try_old_unwind(struct bt_info *);
static void ia64_dump_irq(int);
static ulong ia64_processor_speed(void);
static int ia64_vtop_4l(ulong, physaddr_t *paddr, ulong *pgd, int, int);
static int ia64_vtop(ulong, physaddr_t *paddr, ulong *pgd, int, int);
static int ia64_uvtop(struct task_context *, ulong, physaddr_t *, int);
static int ia64_kvtop(struct task_context *, ulong, physaddr_t *, int);
static ulong ia64_get_task_pgd(ulong);
static ulong ia64_get_pc(struct bt_info *);
static ulong ia64_get_sp(struct bt_info *);
static ulong ia64_get_thread_ksp(ulong);
static void ia64_get_stack_frame(struct bt_info *, ulong *, ulong *);
static int ia64_translate_pte(ulong, void *, ulonglong);
static ulong ia64_vmalloc_start(void);
static int ia64_is_task_addr(ulong);
static int ia64_dis_filter(ulong, char *, unsigned int);
static void ia64_dump_switch_stack(ulong, ulong);
static void ia64_cmd_mach(void);
static int ia64_get_smp_cpus(void);
static void ia64_display_machine_stats(void);
static void ia64_display_cpu_data(unsigned int);
static void ia64_display_memmap(void);
static void ia64_create_memmap(void);
static ulong check_mem_limit(void);
static int ia64_verify_paddr(uint64_t);
static int ia64_available_memory(struct efi_memory_desc_t *);
static void ia64_post_init(void);
static ulong ia64_in_per_cpu_mca_stack(void);
static struct line_number_hook ia64_line_number_hooks[];
static ulong ia64_get_stackbase(ulong);
static ulong ia64_get_stacktop(ulong);
static void parse_cmdline_args(void);
static void ia64_calc_phys_start(void);
static int ia64_get_kvaddr_ranges(struct vaddr_range *);
struct unw_frame_info;
static void dump_unw_frame_info(struct unw_frame_info *);
static int old_unw_unwind(struct unw_frame_info *);
static void unw_init_from_blocked_task(struct unw_frame_info *, ulong);
static ulong ia64_rse_slot_num(ulong *);
static ulong *ia64_rse_skip_regs(ulong *, long);
static ulong *ia64_rse_rnat_addr(ulong *);
static ulong rse_read_reg(struct unw_frame_info *, int, int *);
static void rse_function_params(struct unw_frame_info *, char *);
static int ia64_vtop_4l_xen_wpt(ulong, physaddr_t *paddr, ulong *pgd, int, int);
static int ia64_vtop_xen_wpt(ulong, physaddr_t *paddr, ulong *pgd, int, int);
static int ia64_xen_kdump_p2m_create(struct xen_kdump_data *);
static int ia64_xendump_p2m_create(struct xendump_data *);
static void ia64_debug_dump_page(FILE *, char *, char *);
static char *ia64_xendump_load_page(ulong, struct xendump_data *);
static int ia64_xendump_page_index(ulong, struct xendump_data *);
static ulong ia64_xendump_panic_task(struct xendump_data *);
static void ia64_get_xendump_regs(struct xendump_data *, struct bt_info *, ulong *, ulong *);
static void ia64_init_hyper(int);
struct machine_specific ia64_machine_specific = { 0 };
void
ia64_init(int when)
{
struct syment *sp, *spn;
if (XEN_HYPER_MODE()) {
ia64_init_hyper(when);
return;
}
switch (when)
{
case SETUP_ENV:
#if defined(PR_SET_FPEMU) && defined(PR_FPEMU_NOPRINT)
prctl(PR_SET_FPEMU, PR_FPEMU_NOPRINT, 0, 0, 0);
#endif
#if defined(PR_SET_UNALIGN) && defined(PR_UNALIGN_NOPRINT)
prctl(PR_SET_UNALIGN, PR_UNALIGN_NOPRINT, 0, 0, 0);
#endif
break;
case PRE_SYMTAB:
machdep->verify_symbol = ia64_verify_symbol;
machdep->machspec = &ia64_machine_specific;
if (pc->flags & KERNEL_DEBUG_QUERY)
return;
machdep->pagesize = memory_page_size();
machdep->pageshift = ffs(machdep->pagesize) - 1;
machdep->pageoffset = machdep->pagesize - 1;
machdep->pagemask = ~(machdep->pageoffset);
switch (machdep->pagesize)
{
case 4096:
machdep->stacksize = (power(2, 3) * PAGESIZE());
break;
case 8192:
machdep->stacksize = (power(2, 2) * PAGESIZE());
break;
case 16384:
machdep->stacksize = (power(2, 1) * PAGESIZE());
break;
case 65536:
machdep->stacksize = (power(2, 0) * PAGESIZE());
break;
default:
machdep->stacksize = 32*1024;
break;
}
if ((machdep->pgd = (char *)malloc(PAGESIZE())) == NULL)
error(FATAL, "cannot malloc pgd space.");
if ((machdep->pud = (char *)malloc(PAGESIZE())) == NULL)
error(FATAL, "cannot malloc pud space.");
if ((machdep->pmd = (char *)malloc(PAGESIZE())) == NULL)
error(FATAL, "cannot malloc pmd space.");
if ((machdep->ptbl = (char *)malloc(PAGESIZE())) == NULL)
error(FATAL, "cannot malloc ptbl space.");
machdep->last_pgd_read = 0;
machdep->last_pud_read = 0;
machdep->last_pmd_read = 0;
machdep->last_ptbl_read = 0;
machdep->verify_paddr = ia64_verify_paddr;
machdep->get_kvaddr_ranges = ia64_get_kvaddr_ranges;
machdep->ptrs_per_pgd = PTRS_PER_PGD;
machdep->machspec->phys_start = UNKNOWN_PHYS_START;
if (machdep->cmdline_args[0])
parse_cmdline_args();
if (ACTIVE())
machdep->flags |= DEVMEMRD;
break;
case PRE_GDB:
if (pc->flags & KERNEL_DEBUG_QUERY)
return;
/*
* Until the kernel core dump and va_server library code
* do the right thing with respect to the configured page size,
* try to recognize a fatal inequity between the compiled-in
* page size and the page size used by the kernel.
*/
if ((sp = symbol_search("empty_zero_page")) &&
(spn = next_symbol(NULL, sp)) &&
((spn->value - sp->value) != PAGESIZE()))
error(FATAL,
"compiled-in page size: %d (apparent) kernel page size: %ld\n",
PAGESIZE(), spn->value - sp->value);
machdep->kvbase = KERNEL_VMALLOC_BASE;
machdep->identity_map_base = KERNEL_CACHED_BASE;
machdep->is_kvaddr = generic_is_kvaddr;
machdep->is_uvaddr = generic_is_uvaddr;
machdep->eframe_search = ia64_eframe_search;
machdep->back_trace = ia64_back_trace_cmd;
machdep->processor_speed = ia64_processor_speed;
machdep->uvtop = ia64_uvtop;
machdep->kvtop = ia64_kvtop;
machdep->get_task_pgd = ia64_get_task_pgd;
machdep->dump_irq = ia64_dump_irq;
machdep->get_stack_frame = ia64_get_stack_frame;
machdep->get_stackbase = ia64_get_stackbase;
machdep->get_stacktop = ia64_get_stacktop;
machdep->translate_pte = ia64_translate_pte;
machdep->memory_size = generic_memory_size;
machdep->vmalloc_start = ia64_vmalloc_start;
machdep->is_task_addr = ia64_is_task_addr;
machdep->dis_filter = ia64_dis_filter;
machdep->cmd_mach = ia64_cmd_mach;
machdep->get_smp_cpus = ia64_get_smp_cpus;
machdep->line_number_hooks = ia64_line_number_hooks;
machdep->value_to_symbol = generic_machdep_value_to_symbol;
machdep->init_kernel_pgd = NULL;
machdep->get_irq_affinity = generic_get_irq_affinity;
machdep->show_interrupts = generic_show_interrupts;
if ((sp = symbol_search("_stext"))) {
machdep->machspec->kernel_region =
VADDR_REGION(sp->value);
machdep->machspec->kernel_start = sp->value;
} else {
machdep->machspec->kernel_region = KERNEL_CACHED_REGION;
machdep->machspec->kernel_start = KERNEL_CACHED_BASE;
}
if (machdep->machspec->kernel_region == KERNEL_VMALLOC_REGION) {
machdep->machspec->vmalloc_start =
machdep->machspec->kernel_start +
GIGABYTES((ulong)(4));
if (machdep->machspec->phys_start == UNKNOWN_PHYS_START)
ia64_calc_phys_start();
} else
machdep->machspec->vmalloc_start = KERNEL_VMALLOC_BASE;
machdep->xen_kdump_p2m_create = ia64_xen_kdump_p2m_create;
machdep->xendump_p2m_create = ia64_xendump_p2m_create;
machdep->xendump_panic_task = ia64_xendump_panic_task;
machdep->get_xendump_regs = ia64_get_xendump_regs;
break;
case POST_GDB:
STRUCT_SIZE_INIT(cpuinfo_ia64, "cpuinfo_ia64");
STRUCT_SIZE_INIT(switch_stack, "switch_stack");
MEMBER_OFFSET_INIT(thread_struct_fph, "thread_struct", "fph");
MEMBER_OFFSET_INIT(switch_stack_b0, "switch_stack", "b0");
MEMBER_OFFSET_INIT(switch_stack_ar_bspstore,
"switch_stack", "ar_bspstore");
MEMBER_OFFSET_INIT(switch_stack_ar_pfs,
"switch_stack", "ar_pfs");
MEMBER_OFFSET_INIT(switch_stack_ar_rnat,
"switch_stack", "ar_rnat");
MEMBER_OFFSET_INIT(switch_stack_pr,
"switch_stack", "pr");
MEMBER_OFFSET_INIT(cpuinfo_ia64_proc_freq,
"cpuinfo_ia64", "proc_freq");
MEMBER_OFFSET_INIT(cpuinfo_ia64_unimpl_va_mask,
"cpuinfo_ia64", "unimpl_va_mask");
MEMBER_OFFSET_INIT(cpuinfo_ia64_unimpl_pa_mask,
"cpuinfo_ia64", "unimpl_pa_mask");
if (kernel_symbol_exists("nr_irqs"))
get_symbol_data("nr_irqs", sizeof(unsigned int),
&machdep->nr_irqs);
else if (symbol_exists("irq_desc"))
ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc,
"irq_desc", NULL, 0);
else if (symbol_exists("_irq_desc"))
ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc,
"_irq_desc", NULL, 0);
if (!machdep->hz)
machdep->hz = 1024;
machdep->section_size_bits = _SECTION_SIZE_BITS;
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
ia64_create_memmap();
break;
case POST_INIT:
ia64_post_init();
break;
case LOG_ONLY:
machdep->machspec = &ia64_machine_specific;
machdep->machspec->kernel_start = kt->vmcoreinfo._stext_SYMBOL;
machdep->machspec->kernel_region =
VADDR_REGION(kt->vmcoreinfo._stext_SYMBOL);
if (machdep->machspec->kernel_region == KERNEL_VMALLOC_REGION) {
machdep->machspec->vmalloc_start =
machdep->machspec->kernel_start +
GIGABYTES((ulong)(4));
ia64_calc_phys_start();
}
break;
}
}
/*
* --machdep <addr> defaults to the physical start location.
*
* Otherwise, it's got to be a "item=value" string, separated
* by commas if more than one is passed in.
*/
void
parse_cmdline_args(void)
{
int index, i, c, errflag;
char *p;
char buf[BUFSIZE];
char *arglist[MAXARGS];
ulong value;
struct machine_specific *ms;
int vm_flag;
ms = &ia64_machine_specific;
vm_flag = 0;
for (index = 0; index < MAX_MACHDEP_ARGS; index++) {
if (!machdep->cmdline_args[index])
break;
if (!strstr(machdep->cmdline_args[index], "=")) {
errflag = 0;
value = htol(machdep->cmdline_args[index],
RETURN_ON_ERROR|QUIET, &errflag);
if (!errflag) {
ms->phys_start = value;
error(NOTE, "setting phys_start to: 0x%lx\n",
ms->phys_start);
} else
error(WARNING, "ignoring --machdep option: %s\n\n",
machdep->cmdline_args[index]);
continue;
}
strcpy(buf, machdep->cmdline_args[index]);
for (p = buf; *p; p++) {
if (*p == ',')
*p = ' ';
}
c = parse_line(buf, arglist);
for (i = 0; i < c; i++) {
errflag = 0;
if (STRNEQ(arglist[i], "phys_start=")) {
p = arglist[i] + strlen("phys_start=");
if (strlen(p)) {
value = htol(p, RETURN_ON_ERROR|QUIET,
&errflag);
if (!errflag) {
ms->phys_start = value;
error(NOTE,
"setting phys_start to: 0x%lx\n",
ms->phys_start);
continue;
}
}
} else if (STRNEQ(arglist[i], "init_stack_size=")) {
p = arglist[i] + strlen("init_stack_size=");
if (strlen(p)) {
value = stol(p, RETURN_ON_ERROR|QUIET,
&errflag);
if (!errflag) {
ms->ia64_init_stack_size = (int)value;
error(NOTE,
"setting init_stack_size to: 0x%x (%d)\n",
ms->ia64_init_stack_size,
ms->ia64_init_stack_size);
continue;
}
}
} else if (STRNEQ(arglist[i], "vm=")) {
vm_flag++;
p = arglist[i] + strlen("vm=");
if (strlen(p)) {
if (STREQ(p, "4l")) {
machdep->flags |= VM_4_LEVEL;
continue;
}
}
}
error(WARNING, "ignoring --machdep option: %s\n", arglist[i]);
}
if (vm_flag) {
switch (machdep->flags & (VM_4_LEVEL))
{
case VM_4_LEVEL:
error(NOTE, "using 4-level pagetable\n");
c++;
break;
default:
error(WARNING, "invalid vm= option\n");
c++;
machdep->flags &= ~(VM_4_LEVEL);
break;
}
}
if (c)
fprintf(fp, "\n");
}
}
int
ia64_in_init_stack(ulong addr)
{
ulong init_stack_addr;
if (!symbol_exists("ia64_init_stack"))
return FALSE;
/*
* ia64_init_stack could be aliased to region 5
*/
init_stack_addr = ia64_VTOP(symbol_value("ia64_init_stack"));
addr = ia64_VTOP(addr);
if ((addr < init_stack_addr) ||
(addr >= (init_stack_addr+machdep->machspec->ia64_init_stack_size)))
return FALSE;
return TRUE;
}
static ulong
ia64_in_per_cpu_mca_stack(void)
{
int plen, i;
ulong flag;
ulong vaddr, paddr, stackbase, stacktop;
ulong *__per_cpu_mca;
struct task_context *tc;
tc = CURRENT_CONTEXT();
if (STRNEQ(CURRENT_COMM(), "INIT"))
flag = INIT;
else if (STRNEQ(CURRENT_COMM(), "MCA"))
flag = MCA;
else
return 0;
if (!symbol_exists("__per_cpu_mca") ||
!(plen = get_array_length("__per_cpu_mca", NULL, 0)) ||
(plen < kt->cpus))
return 0;
vaddr = SWITCH_STACK_ADDR(CURRENT_TASK());
if (VADDR_REGION(vaddr) != KERNEL_CACHED_REGION)
return 0;
paddr = ia64_VTOP(vaddr);
__per_cpu_mca = (ulong *)GETBUF(sizeof(ulong) * kt->cpus);
if (!readmem(symbol_value("__per_cpu_mca"), KVADDR, __per_cpu_mca,
sizeof(ulong) * kt->cpus, "__per_cpu_mca", RETURN_ON_ERROR|QUIET))
return 0;
if (CRASHDEBUG(1)) {
for (i = 0; i < kt->cpus; i++) {
fprintf(fp, "__per_cpu_mca[%d]: %lx\n",
i, __per_cpu_mca[i]);
}
}
stackbase = __per_cpu_mca[tc->processor];
stacktop = stackbase + (STACKSIZE() * 2);
FREEBUF(__per_cpu_mca);
if ((paddr >= stackbase) && (paddr < stacktop))
return flag;
else
return 0;
}
void
ia64_dump_machdep_table(ulong arg)
{
int i, others, verbose;
struct machine_specific *ms;
verbose = FALSE;
ms = &ia64_machine_specific;
if (arg) {
switch (arg)
{
default:
case 1:
verbose = TRUE;
break;
case 2:
if (machdep->flags & NEW_UNWIND) {
machdep->flags &=
~(NEW_UNWIND|NEW_UNW_V1|NEW_UNW_V2|NEW_UNW_V3);
machdep->flags |= OLD_UNWIND;
ms->unwind_init = ia64_old_unwind_init;
ms->unwind = ia64_old_unwind;
ms->dump_unwind_stats = NULL;
ms->unwind_debug = NULL;
} else {
machdep->flags &= ~OLD_UNWIND;
machdep->flags |= NEW_UNWIND;
if (MEMBER_EXISTS("unw_frame_info", "pt")) {
if (MEMBER_EXISTS("pt_regs", "ar_csd")) {
machdep->flags |= NEW_UNW_V3;
ms->unwind_init = unwind_init_v3;
ms->unwind = unwind_v3;
ms->unwind_debug = unwind_debug_v3;
ms->dump_unwind_stats =
dump_unwind_stats_v3;
} else {
machdep->flags |= NEW_UNW_V2;
ms->unwind_init = unwind_init_v2;
ms->unwind = unwind_v2;
ms->unwind_debug = unwind_debug_v2;
ms->dump_unwind_stats =
dump_unwind_stats_v2;
}
} else {
machdep->flags |= NEW_UNW_V1;
ms->unwind_init = unwind_init_v1;
ms->unwind = unwind_v1;
ms->unwind_debug = unwind_debug_v1;
ms->dump_unwind_stats =
dump_unwind_stats_v1;
}
}
ms->unwind_init();
return;
case 3:
if (machdep->flags & NEW_UNWIND)
ms->unwind_debug(arg);
return;
}
}
others = 0;
fprintf(fp, " flags: %lx (", machdep->flags);
/* future flags tests here */
if (machdep->flags & NEW_UNWIND)
fprintf(fp, "%sNEW_UNWIND", others++ ? "|" : "");
if (machdep->flags & NEW_UNW_V1)
fprintf(fp, "%sNEW_UNW_V1", others++ ? "|" : "");
if (machdep->flags & NEW_UNW_V2)
fprintf(fp, "%sNEW_UNW_V2", others++ ? "|" : "");
if (machdep->flags & NEW_UNW_V3)
fprintf(fp, "%sNEW_UNW_V3", others++ ? "|" : "");
if (machdep->flags & OLD_UNWIND)
fprintf(fp, "%sOLD_UNWIND", others++ ? "|" : "");
if (machdep->flags & UNW_OUT_OF_SYNC)
fprintf(fp, "%sUNW_OUT_OF_SYNC", others++ ? "|" : "");
if (machdep->flags & UNW_READ)
fprintf(fp, "%sUNW_READ", others++ ? "|" : "");
if (machdep->flags & UNW_PTREGS)
fprintf(fp, "%sUNW_PTREGS", others++ ? "|" : "");
if (machdep->flags & UNW_R0)
fprintf(fp, "%sUNW_R0", others++ ? "|" : "");
if (machdep->flags & MEM_LIMIT)
fprintf(fp, "%sMEM_LIMIT", others++ ? "|" : "");
if (machdep->flags & DEVMEMRD)
fprintf(fp, "%sDEVMEMRD", others++ ? "|" : "");
if (machdep->flags & INIT)
fprintf(fp, "%sINIT", others++ ? "|" : "");
if (machdep->flags & MCA)
fprintf(fp, "%sMCA", others++ ? "|" : "");
if (machdep->flags & VM_4_LEVEL)
fprintf(fp, "%sVM_4_LEVEL", others++ ? "|" : "");
fprintf(fp, ")\n");
fprintf(fp, " kvbase: %lx\n", machdep->kvbase);
fprintf(fp, " identity_map_base: %lx\n", machdep->identity_map_base);
fprintf(fp, " pagesize: %d\n", machdep->pagesize);
fprintf(fp, " pageshift: %d\n", machdep->pageshift);
fprintf(fp, " pagemask: %llx\n", machdep->pagemask);
fprintf(fp, " pageoffset: %lx\n", machdep->pageoffset);
fprintf(fp, " stacksize: %ld\n", machdep->stacksize);
fprintf(fp, " hz: %d\n", machdep->hz);
fprintf(fp, " mhz: %d\n", machdep->hz);
fprintf(fp, " memsize: %ld (0x%lx)\n",
machdep->memsize, machdep->memsize);
fprintf(fp, " bits: %d\n", machdep->bits);
fprintf(fp, " nr_irqs: %d\n", machdep->nr_irqs);
fprintf(fp, " eframe_search: ia64_eframe_search()\n");
fprintf(fp, " back_trace: ia64_back_trace_cmd()\n");
fprintf(fp, "get_processor_speed: ia64_processor_speed()\n");
fprintf(fp, " uvtop: ia64_uvtop()\n");
fprintf(fp, " kvtop: ia64_kvtop()\n");
fprintf(fp, " get_task_pgd: ia64_get_task_pgd()\n");
fprintf(fp, " dump_irq: ia64_dump_irq()\n");
fprintf(fp, " get_stack_frame: ia64_get_stack_frame()\n");
fprintf(fp, " get_stackbase: ia64_get_stackbase()\n");
fprintf(fp, " get_stacktop: ia64_get_stacktop()\n");
fprintf(fp, " translate_pte: ia64_translate_pte()\n");
fprintf(fp, " memory_size: generic_memory_size()\n");
fprintf(fp, " vmalloc_start: ia64_vmalloc_start()\n");
fprintf(fp, " is_task_addr: ia64_is_task_addr()\n");
fprintf(fp, " verify_symbol: ia64_verify_symbol()\n");
fprintf(fp, " dis_filter: ia64_dis_filter()\n");
fprintf(fp, " cmd_mach: ia64_cmd_mach()\n");
fprintf(fp, " get_smp_cpus: ia64_get_smp_cpus()\n");
fprintf(fp, " get_kvaddr_ranges: ia64_get_kvaddr_ranges()\n");
fprintf(fp, " is_kvaddr: generic_is_kvaddr()\n");
fprintf(fp, " is_uvaddr: generic_is_uvaddr()\n");
fprintf(fp, " verify_paddr: %s()\n",
(machdep->verify_paddr == ia64_verify_paddr) ?
"ia64_verify_paddr" : "generic_verify_paddr");
fprintf(fp, " get_irq_affinity: generic_get_irq_affinity()\n");
fprintf(fp, " show_interrupts: generic_show_interrupts()\n");
fprintf(fp, " init_kernel_pgd: NULL\n");
fprintf(fp, "xen_kdump_p2m_create: ia64_xen_kdump_p2m_create()\n");
fprintf(fp, " xendump_p2m_create: ia64_xendump_p2m_create()\n");
fprintf(fp, " xendump_panic_task: ia64_xendump_panic_task()\n");
fprintf(fp, " get_xendump_regs: ia64_get_xendump_regs()\n");
fprintf(fp, " value_to_symbol: generic_machdep_value_to_symbol()\n");
fprintf(fp, " line_number_hooks: ia64_line_number_hooks\n");
fprintf(fp, " last_pgd_read: %lx\n", machdep->last_pgd_read);
fprintf(fp, " last_pud_read: %lx\n", machdep->last_pud_read);
fprintf(fp, " last_pmd_read: %lx\n", machdep->last_pmd_read);
fprintf(fp, " last_ptbl_read: %lx\n", machdep->last_ptbl_read);
fprintf(fp, " pgd: %lx\n", (ulong)machdep->pgd);
fprintf(fp, " pud: %lx\n", (ulong)machdep->pud);
fprintf(fp, " pmd: %lx\n", (ulong)machdep->pmd);
fprintf(fp, " ptbl: %lx\n", (ulong)machdep->ptbl);
fprintf(fp, " ptrs_per_pgd: %d\n", machdep->ptrs_per_pgd);
for (i = 0; i < MAX_MACHDEP_ARGS; i++) {
fprintf(fp, " cmdline_args[%d]: %s\n",
i, machdep->cmdline_args[i] ?
machdep->cmdline_args[i] : "(unused)");
}
fprintf(fp, " section_size_bits: %ld\n", machdep->section_size_bits);
fprintf(fp, " max_physmem_bits: %ld\n", machdep->max_physmem_bits);
fprintf(fp, " sections_per_root: %ld\n", machdep->sections_per_root);
fprintf(fp, " machspec: ia64_machine_specific\n");
fprintf(fp, " cpu_data_address: %lx\n",
machdep->machspec->cpu_data_address);
fprintf(fp, " unimpl_va_mask: %lx\n",
machdep->machspec->unimpl_va_mask);
fprintf(fp, " unimpl_pa_mask: %lx\n",
machdep->machspec->unimpl_pa_mask);
fprintf(fp, " unw: %lx\n",
(ulong)machdep->machspec->unw);
fprintf(fp, " unw_tables_offset: %ld\n",
machdep->machspec->unw_tables_offset);
fprintf(fp, " unw_kernel_table_offset: %ld %s\n",
machdep->machspec->unw_kernel_table_offset,
machdep->machspec->unw_kernel_table_offset ? "" : "(unused)");
fprintf(fp, " unw_pt_regs_offsets: %ld %s\n",
machdep->machspec->unw_pt_regs_offsets,
machdep->machspec->unw_pt_regs_offsets ? "" : "(unused)");
fprintf(fp, " script_index: %d\n",
machdep->machspec->script_index);
fprintf(fp, " script_cache: %lx%s",
(ulong)machdep->machspec->script_cache,
machdep->flags & OLD_UNWIND ? "\n" : " ");
if (machdep->flags & NEW_UNWIND)
ms->dump_unwind_stats();
if (!(machdep->flags & (NEW_UNWIND|OLD_UNWIND)))
fprintf(fp, "\n");
fprintf(fp, " mem_limit: %lx\n",
machdep->machspec->mem_limit);
fprintf(fp, " kernel_region: %ld\n",
machdep->machspec->kernel_region);
fprintf(fp, " kernel_start: %lx\n",
machdep->machspec->kernel_start);
fprintf(fp, " phys_start: %lx (%lx)\n",
machdep->machspec->phys_start,
machdep->machspec->phys_start & KERNEL_TR_PAGE_MASK);
fprintf(fp, " vmalloc_start: %lx\n",
machdep->machspec->vmalloc_start);
fprintf(fp, " ia64_memmap: %lx\n",
(ulong)machdep->machspec->ia64_memmap);
fprintf(fp, " efi_memmap_size: %ld\n",
(ulong)machdep->machspec->efi_memmap_size);
fprintf(fp, " efi_memdesc_size: %ld\n",
(ulong)machdep->machspec->efi_memdesc_size);
fprintf(fp, " unwind_init: ");
if (ms->unwind_init == unwind_init_v1)
fprintf(fp, "unwind_init_v1()\n");
else if (ms->unwind_init == unwind_init_v2)
fprintf(fp, "unwind_init_v2()\n");
else if (ms->unwind_init == unwind_init_v3)
fprintf(fp, "unwind_init_v3()\n");
else if (ms->unwind_init == ia64_old_unwind_init)
fprintf(fp, "ia64_old_unwind_init()\n");
else
fprintf(fp, "%lx\n", (ulong)ms->unwind_init);
fprintf(fp, " unwind: ");
if (ms->unwind == unwind_v1)
fprintf(fp, "unwind_v1()\n");
else if (ms->unwind == unwind_v2)
fprintf(fp, "unwind_v2()\n");
else if (ms->unwind == unwind_v3)
fprintf(fp, "unwind_v3()\n");
else if (ms->unwind == ia64_old_unwind)
fprintf(fp, "ia64_old_unwind()\n");
else
fprintf(fp, "%lx\n", (ulong)ms->unwind);
fprintf(fp, " dump_unwind_stats: ");
if (ms->dump_unwind_stats == dump_unwind_stats_v1)
fprintf(fp, "dump_unwind_stats_v1()\n");
else if (ms->dump_unwind_stats == dump_unwind_stats_v2)
fprintf(fp, "dump_unwind_stats_v2()\n");
else if (ms->dump_unwind_stats == dump_unwind_stats_v3)
fprintf(fp, "dump_unwind_stats_v3()\n");
else
fprintf(fp, "%lx\n", (ulong)ms->dump_unwind_stats);
fprintf(fp, " unwind_debug: ");
if (ms->unwind_debug == unwind_debug_v1)
fprintf(fp, "unwind_debug_v1()\n");
else if (ms->unwind_debug == unwind_debug_v2)
fprintf(fp, "unwind_debug_v2()\n");
else if (ms->unwind_debug == unwind_debug_v3)
fprintf(fp, "unwind_debug_v3()\n");
else
fprintf(fp, "%lx\n", (ulong)ms->unwind_debug);
fprintf(fp, " ia64_init_stack_size: %d\n",
ms->ia64_init_stack_size);
if (verbose)
ia64_display_memmap();
}
/*
* Keep or reject a symbol from the namelist.
*/
static int
ia64_verify_symbol(const char *name, ulong value, char type)
{
ulong region;
if (!name || !strlen(name))
return FALSE;
if (XEN_HYPER_MODE() && STREQ(name, "__per_cpu_shift"))
return TRUE;
if (CRASHDEBUG(8))
fprintf(fp, "%016lx %s\n", value, name);
// if (STREQ(name, "phys_start") && type == 'A')
// if (machdep->machspec->phys_start == UNKNOWN_PHYS_START)
// machdep->machspec->phys_start = value;
region = VADDR_REGION(value);
return (((region == KERNEL_CACHED_REGION) ||
(region == KERNEL_VMALLOC_REGION)));
}
/*
* Look for likely exception frames in a stack.
*/
static int
ia64_eframe_search(struct bt_info *bt)
{
return(error(FATAL,
"ia64_eframe_search: not available for this architecture\n"));
}
/*
* Unroll a kernel stack.
*/
#define BT_SWITCH_STACK BT_SYMBOLIC_ARGS
static void
ia64_back_trace_cmd(struct bt_info *bt)
{
struct machine_specific *ms = &ia64_machine_specific;
if (bt->flags & BT_SWITCH_STACK)
ia64_dump_switch_stack(bt->task, 0);
if (machdep->flags & UNW_OUT_OF_SYNC)
error(FATAL,
"kernel and %s unwind data structures are out of sync\n",
pc->program_name);
ms->unwind(bt);
if (bt->flags & BT_UNWIND_ERROR)
try_old_unwind(bt);
}
/*
* Dump the IRQ table.
*/
static void
ia64_dump_irq(int irq)
{
if (kernel_symbol_exists("sparse_irqs") ||
symbol_exists("irq_desc") || symbol_exists("_irq_desc") ||
kernel_symbol_exists("irq_desc_ptrs")) {
machdep->dump_irq = generic_dump_irq;
return(generic_dump_irq(irq));
}
error(FATAL,
"ia64_dump_irq: neither irq_desc or _irq_desc exist\n");
}
/*
* Calculate and return the speed of the processor.
*/
static ulong
ia64_processor_speed(void)
{
ulong mhz, proc_freq;
int bootstrap_processor;
if (machdep->mhz)
return(machdep->mhz);
mhz = 0;
bootstrap_processor = 0;
if (!machdep->machspec->cpu_data_address ||
!VALID_STRUCT(cpuinfo_ia64) ||
!VALID_MEMBER(cpuinfo_ia64_proc_freq))
return (machdep->mhz = mhz);
if (symbol_exists("bootstrap_processor"))
get_symbol_data("bootstrap_processor", sizeof(int),
&bootstrap_processor);
if (bootstrap_processor == -1)
bootstrap_processor = 0;
readmem(machdep->machspec->cpu_data_address +
OFFSET(cpuinfo_ia64_proc_freq),
KVADDR, &proc_freq, sizeof(ulong),
"cpuinfo_ia64 proc_freq", FAULT_ON_ERROR);
mhz = proc_freq/1000000;
return (machdep->mhz = mhz);
}
/* Generic abstraction to translate user or kernel virtual
* addresses to physical using a 4 level page table.
*/
static int
ia64_vtop_4l(ulong vaddr, physaddr_t *paddr, ulong *pgd, int verbose, int usr)
{
ulong *page_dir;
ulong *page_upper;
ulong *page_middle;
ulong *page_table;
ulong pgd_pte;
ulong pud_pte;
ulong pmd_pte;
ulong pte;
ulong region, offset;
if (usr) {
region = VADDR_REGION(vaddr);
offset = (vaddr >> PGDIR_SHIFT) & ((PTRS_PER_PGD >> 3) - 1);
offset |= (region << (PAGESHIFT() - 6));
page_dir = pgd + offset;
} else {
if (!(pgd = (ulong *)vt->kernel_pgd[0]))
error(FATAL, "cannot determine kernel pgd pointer\n");
page_dir = pgd + ((vaddr >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1));
}
if (verbose)
fprintf(fp, "PAGE DIRECTORY: %lx\n", (ulong)pgd);
FILL_PGD(PAGEBASE(pgd), KVADDR, PAGESIZE());
pgd_pte = ULONG(machdep->pgd + PAGEOFFSET(page_dir));
if (verbose)
fprintf(fp, " PGD: %lx => %lx\n", (ulong)page_dir, pgd_pte);
if (!(pgd_pte))
return FALSE;
offset = (vaddr >> PUD_SHIFT) & (PTRS_PER_PUD - 1);
page_upper = (ulong *)(PTOV(pgd_pte & _PFN_MASK)) + offset;
FILL_PUD(PAGEBASE(page_upper), KVADDR, PAGESIZE());
pud_pte = ULONG(machdep->pud + PAGEOFFSET(page_upper));
if (verbose)
fprintf(fp, " PUD: %lx => %lx\n", (ulong)page_upper, pud_pte);
if (!(pud_pte))
return FALSE;
offset = (vaddr >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
page_middle = (ulong *)(PTOV(pud_pte & _PFN_MASK)) + offset;
FILL_PMD(PAGEBASE(page_middle), KVADDR, PAGESIZE());
pmd_pte = ULONG(machdep->pmd + PAGEOFFSET(page_middle));
if (verbose)
fprintf(fp, " PMD: %lx => %lx\n", (ulong)page_middle, pmd_pte);
if (!(pmd_pte))
return FALSE;
offset = (vaddr >> PAGESHIFT()) & (PTRS_PER_PTE - 1);
page_table = (ulong *)(PTOV(pmd_pte & _PFN_MASK)) + offset;
FILL_PTBL(PAGEBASE(page_table), KVADDR, PAGESIZE());
pte = ULONG(machdep->ptbl + PAGEOFFSET(page_table));
if (verbose)
fprintf(fp, " PTE: %lx => %lx\n", (ulong)page_table, pte);
if (!(pte & (_PAGE_P | _PAGE_PROTNONE))) {
if (usr)
*paddr = pte;
if (pte && verbose) {
fprintf(fp, "\n");
ia64_translate_pte(pte, 0, 0);
}
return FALSE;
}
*paddr = (pte & _PFN_MASK) + PAGEOFFSET(vaddr);
if (verbose) {
fprintf(fp, " PAGE: %lx\n\n", PAGEBASE(*paddr));
ia64_translate_pte(pte, 0, 0);
}
return TRUE;
}
/* Generic abstraction to translate user or kernel virtual
* addresses to physical using a 3 level page table.
*/
static int
ia64_vtop(ulong vaddr, physaddr_t *paddr, ulong *pgd, int verbose, int usr)
{
ulong *page_dir;
ulong *page_middle;
ulong *page_table;
ulong pgd_pte;
ulong pmd_pte;
ulong pte;
ulong region, offset;
if (usr) {
region = VADDR_REGION(vaddr);
offset = (vaddr >> PGDIR_SHIFT_3L) & ((PTRS_PER_PGD >> 3) - 1);
offset |= (region << (PAGESHIFT() - 6));
page_dir = pgd + offset;
} else {
if (!(pgd = (ulong *)vt->kernel_pgd[0]))
error(FATAL, "cannot determine kernel pgd pointer\n");
page_dir = pgd + ((vaddr >> PGDIR_SHIFT_3L) & (PTRS_PER_PGD - 1));
}
if (verbose)
fprintf(fp, "PAGE DIRECTORY: %lx\n", (ulong)pgd);
FILL_PGD(PAGEBASE(pgd), KVADDR, PAGESIZE());
pgd_pte = ULONG(machdep->pgd + PAGEOFFSET(page_dir));
if (verbose)
fprintf(fp, " PGD: %lx => %lx\n", (ulong)page_dir, pgd_pte);
if (!(pgd_pte))
return FALSE;
offset = (vaddr >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
page_middle = (ulong *)(PTOV(pgd_pte & _PFN_MASK)) + offset;
FILL_PMD(PAGEBASE(page_middle), KVADDR, PAGESIZE());
pmd_pte = ULONG(machdep->pmd + PAGEOFFSET(page_middle));
if (verbose)
fprintf(fp, " PMD: %lx => %lx\n", (ulong)page_middle, pmd_pte);
if (!(pmd_pte))
return FALSE;
offset = (vaddr >> PAGESHIFT()) & (PTRS_PER_PTE - 1);
page_table = (ulong *)(PTOV(pmd_pte & _PFN_MASK)) + offset;
FILL_PTBL(PAGEBASE(page_table), KVADDR, PAGESIZE());
pte = ULONG(machdep->ptbl + PAGEOFFSET(page_table));
if (verbose)
fprintf(fp, " PTE: %lx => %lx\n", (ulong)page_table, pte);
if (!(pte & (_PAGE_P | _PAGE_PROTNONE))) {
if (usr)
*paddr = pte;
if (pte && verbose) {
fprintf(fp, "\n");
ia64_translate_pte(pte, 0, 0);
}
return FALSE;
}