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x86_64.c
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x86_64.c
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/* x86_64.c -- core analysis suite
*
* Copyright (C) 2004-2016 David Anderson
* Copyright (C) 2004-2016 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.
*/
#include "defs.h"
#include "xen_hyper_defs.h"
#ifdef X86_64
static int x86_64_kvtop(struct task_context *, ulong, physaddr_t *, int);
static int x86_64_kvtop_xen_wpt(struct task_context *, ulong, physaddr_t *, int);
static int x86_64_uvtop(struct task_context *, ulong, physaddr_t *, int);
static int x86_64_uvtop_level4(struct task_context *, ulong, physaddr_t *, int);
static int x86_64_uvtop_level4_xen_wpt(struct task_context *, ulong, physaddr_t *, int);
static int x86_64_uvtop_level4_rhel4_xen_wpt(struct task_context *, ulong, physaddr_t *, int);
static ulong x86_64_vmalloc_start(void);
static int x86_64_is_task_addr(ulong);
static int x86_64_verify_symbol(const char *, ulong, char);
static int x86_64_verify_line_number(ulong, ulong, ulong);
static ulong x86_64_get_task_pgd(ulong);
static int x86_64_translate_pte(ulong, void *, ulonglong);
static ulong x86_64_processor_speed(void);
static int is_vsyscall_addr(ulong);
struct syment *x86_64_value_to_symbol(ulong, ulong *);
static int x86_64_eframe_search(struct bt_info *);
static int x86_64_eframe_verify(struct bt_info *, long, long, long, long, long, long);
#define EFRAME_PRINT (0x1)
#define EFRAME_VERIFY (0x2)
#define EFRAME_CS (0x4)
#define EFRAME_SEARCH (0x8)
static int x86_64_print_eframe_location(ulong, int, FILE *);
static void x86_64_back_trace_cmd(struct bt_info *);
static ulong x86_64_in_exception_stack(struct bt_info *, int *);
static ulong x86_64_in_irqstack(struct bt_info *);
static int x86_64_in_alternate_stack(int, ulong);
static ulong __schedule_frame_adjust(ulong, struct bt_info *);
static void x86_64_low_budget_back_trace_cmd(struct bt_info *);
static void x86_64_dwarf_back_trace_cmd(struct bt_info *);
static void x86_64_get_dumpfile_stack_frame(struct bt_info *, ulong *, ulong *);
static struct syment *x86_64_function_called_by(ulong);
static int is_direct_call_target(struct bt_info *);
static void get_x86_64_frame(struct bt_info *, ulong *, ulong *);
static ulong text_lock_function(char *, struct bt_info *, ulong);
static int x86_64_print_stack_entry(struct bt_info *, FILE *, int, int, ulong);
static void x86_64_display_full_frame(struct bt_info *, ulong, FILE *);
static void x86_64_do_bt_reference_check(struct bt_info *, ulong,char *);
static void x86_64_dump_irq(int);
static void x86_64_get_irq_affinity(int);
static void x86_64_show_interrupts(int, ulong *);
static char *x86_64_extract_idt_function(ulong *, char *, ulong *);
static ulong x86_64_get_pc(struct bt_info *);
static ulong x86_64_get_sp(struct bt_info *);
static void x86_64_get_stack_frame(struct bt_info *, ulong *, ulong *);
static int x86_64_dis_filter(ulong, char *, unsigned int);
static void x86_64_cmd_mach(void);
static int x86_64_get_smp_cpus(void);
static void x86_64_display_machine_stats(void);
static void x86_64_display_cpu_data(unsigned int);
static void x86_64_display_memmap(void);
static void x86_64_dump_line_number(ulong);
static struct line_number_hook x86_64_line_number_hooks[];
static void x86_64_calc_phys_base(void);
static int x86_64_is_module_addr(ulong);
static int x86_64_is_kvaddr(ulong);
static int x86_64_is_uvaddr(ulong, struct task_context *);
void x86_64_compiler_warning_stub(void);
static void x86_64_init_kernel_pgd(void);
static void x86_64_cpu_pda_init(void);
static void x86_64_per_cpu_init(void);
static void x86_64_ist_init(void);
static void x86_64_post_init(void);
static void parse_cmdline_args(void);
static void x86_64_clear_machdep_cache(void);
static void x86_64_irq_eframe_link_init(void);
static ulong x86_64_irq_eframe_link(ulong, struct bt_info *, FILE *);
static ulong search_for_switch_to(ulong, ulong);
static void x86_64_thread_return_init(void);
static void x86_64_framepointer_init(void);
static int x86_64_virt_phys_base(void);
static int x86_64_xendump_p2m_create(struct xendump_data *);
static int x86_64_pvops_xendump_p2m_create(struct xendump_data *);
static int x86_64_pvops_xendump_p2m_l2_create(struct xendump_data *);
static int x86_64_pvops_xendump_p2m_l3_create(struct xendump_data *);
static char *x86_64_xendump_load_page(ulong, struct xendump_data *);
static int x86_64_xendump_page_index(ulong, struct xendump_data *);
static int x86_64_xen_kdump_p2m_create(struct xen_kdump_data *);
static char *x86_64_xen_kdump_load_page(ulong, char *);
static ulong x86_64_xen_kdump_page_mfn(ulong);
static void x86_64_debug_dump_page(FILE *, char *, char *);
static void x86_64_get_xendump_regs(struct xendump_data *, struct bt_info *, ulong *, ulong *);
static ulong x86_64_xendump_panic_task(struct xendump_data *);
static void x86_64_init_hyper(int);
static ulong x86_64_get_stackbase_hyper(ulong);
static ulong x86_64_get_stacktop_hyper(ulong);
static int x86_64_framesize_cache_resize(void);
static int x86_64_framesize_cache_func(int, ulong, int *, int);
static ulong x86_64_get_framepointer(struct bt_info *, ulong);
int search_for_eframe_target_caller(struct bt_info *, ulong, int *);
static int x86_64_get_framesize(struct bt_info *, ulong, ulong);
static void x86_64_framesize_debug(struct bt_info *);
static void x86_64_get_active_set(void);
static int x86_64_get_kvaddr_ranges(struct vaddr_range *);
static int x86_64_verify_paddr(uint64_t);
static void GART_init(void);
static void x86_64_exception_stacks_init(void);
struct machine_specific x86_64_machine_specific = { 0 };
/*
* Do all necessary machine-specific setup here. This is called several
* times during initialization.
*/
void
x86_64_init(int when)
{
int len, dim;
char *string;
if (XEN_HYPER_MODE()) {
x86_64_init_hyper(when);
return;
}
switch (when)
{
case SETUP_ENV:
machdep->process_elf_notes = x86_process_elf_notes;
break;
case PRE_SYMTAB:
machdep->verify_symbol = x86_64_verify_symbol;
machdep->verify_line_number = x86_64_verify_line_number;
machdep->machspec = &x86_64_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 = ~((ulonglong)machdep->pageoffset);
machdep->stacksize = machdep->pagesize * 2;
if ((machdep->machspec->upml = (char *)malloc(PAGESIZE())) == NULL)
error(FATAL, "cannot malloc upml space.");
if ((machdep->pgd = (char *)malloc(PAGESIZE())) == NULL)
error(FATAL, "cannot malloc pgd 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.");
if ((machdep->machspec->pml4 =
(char *)malloc(PAGESIZE()*2)) == NULL)
error(FATAL, "cannot malloc pml4 space.");
machdep->machspec->last_upml_read = 0;
machdep->machspec->last_pml4_read = 0;
machdep->last_pgd_read = 0;
machdep->last_pmd_read = 0;
machdep->last_ptbl_read = 0;
machdep->verify_paddr = x86_64_verify_paddr;
machdep->ptrs_per_pgd = PTRS_PER_PGD;
machdep->flags |= MACHDEP_BT_TEXT;
machdep->flags |= FRAMESIZE_DEBUG;
machdep->machspec->irq_eframe_link = UNINITIALIZED;
machdep->get_kvaddr_ranges = x86_64_get_kvaddr_ranges;
if (machdep->cmdline_args[0])
parse_cmdline_args();
if ((string = pc->read_vmcoreinfo("NUMBER(KERNEL_IMAGE_SIZE)"))) {
machdep->machspec->kernel_image_size = dtol(string, QUIET, NULL);
free(string);
}
break;
case PRE_GDB:
if (!(machdep->flags & VM_FLAGS)) {
if (symbol_exists("xen_start_info")) {
if (PVOPS())
machdep->flags |= VM_2_6_11;
else if (symbol_exists("low_pml4") &&
symbol_exists("swap_low_mappings"))
machdep->flags |= VM_XEN_RHEL4;
else
machdep->flags |= VM_XEN;
} else if (symbol_exists("boot_vmalloc_pgt"))
machdep->flags |= VM_ORIG;
else
machdep->flags |= VM_2_6_11;
}
switch (machdep->flags & VM_FLAGS)
{
case VM_ORIG:
/* pre-2.6.11 layout */
machdep->machspec->userspace_top = USERSPACE_TOP_ORIG;
machdep->machspec->page_offset = PAGE_OFFSET_ORIG;
machdep->machspec->vmalloc_start_addr = VMALLOC_START_ADDR_ORIG;
machdep->machspec->vmalloc_end = VMALLOC_END_ORIG;
machdep->machspec->modules_vaddr = MODULES_VADDR_ORIG;
machdep->machspec->modules_end = MODULES_END_ORIG;
free(machdep->machspec->upml);
machdep->machspec->upml = NULL;
machdep->uvtop = x86_64_uvtop;
break;
case VM_2_6_11:
/* 2.6.11 layout */
machdep->machspec->userspace_top = USERSPACE_TOP_2_6_11;
machdep->machspec->vmalloc_start_addr = VMALLOC_START_ADDR_2_6_11;
machdep->machspec->vmalloc_end = VMALLOC_END_2_6_11;
machdep->machspec->modules_vaddr = MODULES_VADDR_2_6_11;
machdep->machspec->modules_end = MODULES_END_2_6_11;
/* 2.6.24 layout */
machdep->machspec->vmemmap_vaddr = VMEMMAP_VADDR_2_6_24;
machdep->machspec->vmemmap_end = VMEMMAP_END_2_6_24;
if (symbol_exists("vmemmap_populate"))
machdep->flags |= VMEMMAP;
if (kernel_symbol_exists("end_pfn"))
/* 2.6.11 layout */
machdep->machspec->page_offset = PAGE_OFFSET_2_6_11;
else
/* 2.6.27 layout */
machdep->machspec->page_offset = PAGE_OFFSET_2_6_27;
machdep->uvtop = x86_64_uvtop_level4;
break;
case VM_XEN:
/* Xen layout */
machdep->machspec->userspace_top = USERSPACE_TOP_XEN;
machdep->machspec->page_offset = PAGE_OFFSET_XEN;
machdep->machspec->vmalloc_start_addr = VMALLOC_START_ADDR_XEN;
machdep->machspec->vmalloc_end = VMALLOC_END_XEN;
machdep->machspec->modules_vaddr = MODULES_VADDR_XEN;
machdep->machspec->modules_end = MODULES_END_XEN;
break;
case VM_XEN_RHEL4:
/* RHEL4 Xen layout */
machdep->machspec->userspace_top = USERSPACE_TOP_XEN_RHEL4;
machdep->machspec->page_offset = PAGE_OFFSET_XEN_RHEL4;
machdep->machspec->vmalloc_start_addr = VMALLOC_START_ADDR_XEN_RHEL4;
machdep->machspec->vmalloc_end = VMALLOC_END_XEN_RHEL4;
machdep->machspec->modules_vaddr = MODULES_VADDR_XEN_RHEL4;
machdep->machspec->modules_end = MODULES_END_XEN_RHEL4;
break;
}
machdep->kvbase = (ulong)PAGE_OFFSET;
machdep->identity_map_base = (ulong)PAGE_OFFSET;
machdep->is_kvaddr = x86_64_is_kvaddr;
machdep->is_uvaddr = x86_64_is_uvaddr;
machdep->eframe_search = x86_64_eframe_search;
machdep->back_trace = x86_64_low_budget_back_trace_cmd;
machdep->processor_speed = x86_64_processor_speed;
machdep->kvtop = x86_64_kvtop;
machdep->get_task_pgd = x86_64_get_task_pgd;
machdep->get_stack_frame = x86_64_get_stack_frame;
machdep->get_stackbase = generic_get_stackbase;
machdep->get_stacktop = generic_get_stacktop;
machdep->translate_pte = x86_64_translate_pte;
machdep->memory_size = generic_memory_size;
machdep->is_task_addr = x86_64_is_task_addr;
machdep->dis_filter = x86_64_dis_filter;
machdep->cmd_mach = x86_64_cmd_mach;
machdep->get_smp_cpus = x86_64_get_smp_cpus;
machdep->value_to_symbol = x86_64_value_to_symbol;
machdep->init_kernel_pgd = x86_64_init_kernel_pgd;
machdep->clear_machdep_cache = x86_64_clear_machdep_cache;
machdep->xendump_p2m_create = x86_64_xendump_p2m_create;
machdep->get_xendump_regs = x86_64_get_xendump_regs;
machdep->xen_kdump_p2m_create = x86_64_xen_kdump_p2m_create;
machdep->xendump_panic_task = x86_64_xendump_panic_task;
if (symbol_exists("vgettimeofday"))
machdep->machspec->vsyscall_page =
PAGEBASE(symbol_value("vgettimeofday"));
x86_64_calc_phys_base();
break;
case POST_RELOC:
/*
* Check for CONFIG_RANDOMIZE_MEMORY, and set page_offset here.
* The remainder of the virtual address range setups will get
* done below in POST_GDB.
*/
if (kernel_symbol_exists("page_offset_base") &&
kernel_symbol_exists("vmalloc_base")) {
machdep->flags |= RANDOMIZED;
readmem(symbol_value("page_offset_base"), KVADDR,
&machdep->machspec->page_offset, sizeof(ulong),
"page_offset_base", FAULT_ON_ERROR);
machdep->kvbase = machdep->machspec->page_offset;
machdep->identity_map_base = machdep->machspec->page_offset;
}
break;
case POST_GDB:
if (THIS_KERNEL_VERSION >= LINUX(2,6,26) &&
THIS_KERNEL_VERSION < LINUX(2,6,31)) {
machdep->machspec->modules_vaddr = MODULES_VADDR_2_6_26;
}
if (THIS_KERNEL_VERSION >= LINUX(2,6,27) &&
THIS_KERNEL_VERSION < LINUX(2,6,31)) {
machdep->machspec->modules_end = MODULES_END_2_6_27;
}
if (THIS_KERNEL_VERSION >= LINUX(2,6,31)) {
if (machdep->flags & RANDOMIZED) {
readmem(symbol_value("vmalloc_base"), KVADDR,
&machdep->machspec->vmalloc_start_addr,
sizeof(ulong), "vmalloc_base", FAULT_ON_ERROR);
machdep->machspec->vmalloc_end =
machdep->machspec->vmalloc_start_addr + TERABYTES(32) - 1;
if (kernel_symbol_exists("vmemmap_base")) {
readmem(symbol_value("vmemmap_base"), KVADDR,
&machdep->machspec->vmemmap_vaddr, sizeof(ulong),
"vmemmap_base", FAULT_ON_ERROR);
machdep->machspec->vmemmap_end =
machdep->machspec->vmemmap_vaddr +
TERABYTES(1) - 1;
} else {
machdep->machspec->vmemmap_vaddr = VMEMMAP_VADDR_2_6_31;
machdep->machspec->vmemmap_end = VMEMMAP_END_2_6_31;
}
machdep->machspec->modules_vaddr = __START_KERNEL_map +
(machdep->machspec->kernel_image_size ?
machdep->machspec->kernel_image_size : GIGABYTES(1));
machdep->machspec->modules_end = MODULES_END_2_6_31;
} else {
machdep->machspec->vmalloc_start_addr = VMALLOC_START_ADDR_2_6_31;
machdep->machspec->vmalloc_end = VMALLOC_END_2_6_31;
machdep->machspec->vmemmap_vaddr = VMEMMAP_VADDR_2_6_31;
machdep->machspec->vmemmap_end = VMEMMAP_END_2_6_31;
if ((kt->flags2 & KASLR) && (THIS_KERNEL_VERSION >= LINUX(4,7,0)))
machdep->machspec->modules_vaddr = __START_KERNEL_map +
(machdep->machspec->kernel_image_size ?
machdep->machspec->kernel_image_size : GIGABYTES(1));
else
machdep->machspec->modules_vaddr = MODULES_VADDR_2_6_31;
machdep->machspec->modules_end = MODULES_END_2_6_31;
}
}
STRUCT_SIZE_INIT(cpuinfo_x86, "cpuinfo_x86");
/*
* Before 2.6.25 the structure was called gate_struct
*/
if (STRUCT_EXISTS("gate_desc"))
STRUCT_SIZE_INIT(gate_struct, "gate_desc");
else
STRUCT_SIZE_INIT(gate_struct, "gate_struct");
STRUCT_SIZE_INIT(e820map, "e820map");
STRUCT_SIZE_INIT(e820entry, "e820entry");
MEMBER_OFFSET_INIT(e820map_nr_map, "e820map", "nr_map");
MEMBER_OFFSET_INIT(e820entry_addr, "e820entry", "addr");
MEMBER_OFFSET_INIT(e820entry_size, "e820entry", "size");
MEMBER_OFFSET_INIT(e820entry_type, "e820entry", "type");
if (KVMDUMP_DUMPFILE())
set_kvm_iohole(NULL);
MEMBER_OFFSET_INIT(thread_struct_rip, "thread_struct", "rip");
MEMBER_OFFSET_INIT(thread_struct_rsp, "thread_struct", "rsp");
MEMBER_OFFSET_INIT(thread_struct_rsp0, "thread_struct", "rsp0");
if (INVALID_MEMBER(thread_struct_rip))
MEMBER_OFFSET_INIT(thread_struct_rip, "thread_struct", "ip");
if (INVALID_MEMBER(thread_struct_rsp))
MEMBER_OFFSET_INIT(thread_struct_rsp, "thread_struct", "sp");
if (INVALID_MEMBER(thread_struct_rsp0))
MEMBER_OFFSET_INIT(thread_struct_rsp0, "thread_struct", "sp0");
STRUCT_SIZE_INIT(tss_struct, "tss_struct");
MEMBER_OFFSET_INIT(tss_struct_ist, "tss_struct", "ist");
if (INVALID_MEMBER(tss_struct_ist)) {
long x86_tss_offset, ist_offset;
x86_tss_offset = MEMBER_OFFSET("tss_struct", "x86_tss");
ist_offset = MEMBER_OFFSET("x86_hw_tss", "ist");
if ((x86_tss_offset != INVALID_OFFSET) &&
(ist_offset != INVALID_OFFSET))
ASSIGN_OFFSET(tss_struct_ist) = x86_tss_offset +
ist_offset;
}
MEMBER_OFFSET_INIT(user_regs_struct_rip,
"user_regs_struct", "rip");
if (INVALID_MEMBER(user_regs_struct_rip))
MEMBER_OFFSET_INIT(user_regs_struct_rip,
"user_regs_struct", "ip");
MEMBER_OFFSET_INIT(user_regs_struct_rsp,
"user_regs_struct", "rsp");
if (INVALID_MEMBER(user_regs_struct_rsp))
MEMBER_OFFSET_INIT(user_regs_struct_rsp,
"user_regs_struct", "sp");
MEMBER_OFFSET_INIT(user_regs_struct_eflags,
"user_regs_struct", "eflags");
if (INVALID_MEMBER(user_regs_struct_eflags))
MEMBER_OFFSET_INIT(user_regs_struct_eflags,
"user_regs_struct", "flags");
MEMBER_OFFSET_INIT(user_regs_struct_cs,
"user_regs_struct", "cs");
MEMBER_OFFSET_INIT(user_regs_struct_ss,
"user_regs_struct", "ss");
MEMBER_OFFSET_INIT(user_regs_struct_rax,
"user_regs_struct", "rax");
if (INVALID_MEMBER(user_regs_struct_rax))
MEMBER_OFFSET_INIT(user_regs_struct_rax,
"user_regs_struct", "ax");
MEMBER_OFFSET_INIT(user_regs_struct_rbx,
"user_regs_struct", "rbx");
if (INVALID_MEMBER(user_regs_struct_rbx))
MEMBER_OFFSET_INIT(user_regs_struct_rbx,
"user_regs_struct", "bx");
MEMBER_OFFSET_INIT(user_regs_struct_rcx,
"user_regs_struct", "rcx");
if (INVALID_MEMBER(user_regs_struct_rcx))
MEMBER_OFFSET_INIT(user_regs_struct_rcx,
"user_regs_struct", "cx");
MEMBER_OFFSET_INIT(user_regs_struct_rdx,
"user_regs_struct", "rdx");
if (INVALID_MEMBER(user_regs_struct_rdx))
MEMBER_OFFSET_INIT(user_regs_struct_rdx,
"user_regs_struct", "dx");
MEMBER_OFFSET_INIT(user_regs_struct_rsi,
"user_regs_struct", "rsi");
if (INVALID_MEMBER(user_regs_struct_rsi))
MEMBER_OFFSET_INIT(user_regs_struct_rsi,
"user_regs_struct", "si");
MEMBER_OFFSET_INIT(user_regs_struct_rdi,
"user_regs_struct", "rdi");
if (INVALID_MEMBER(user_regs_struct_rdi))
MEMBER_OFFSET_INIT(user_regs_struct_rdi,
"user_regs_struct", "di");
MEMBER_OFFSET_INIT(user_regs_struct_rbp,
"user_regs_struct", "rbp");
if (INVALID_MEMBER(user_regs_struct_rbp))
MEMBER_OFFSET_INIT(user_regs_struct_rbp,
"user_regs_struct", "bp");
MEMBER_OFFSET_INIT(user_regs_struct_r8,
"user_regs_struct", "r8");
MEMBER_OFFSET_INIT(user_regs_struct_r9,
"user_regs_struct", "r9");
MEMBER_OFFSET_INIT(user_regs_struct_r10,
"user_regs_struct", "r10");
MEMBER_OFFSET_INIT(user_regs_struct_r11,
"user_regs_struct", "r11");
MEMBER_OFFSET_INIT(user_regs_struct_r12,
"user_regs_struct", "r12");
MEMBER_OFFSET_INIT(user_regs_struct_r13,
"user_regs_struct", "r13");
MEMBER_OFFSET_INIT(user_regs_struct_r14,
"user_regs_struct", "r14");
MEMBER_OFFSET_INIT(user_regs_struct_r15,
"user_regs_struct", "r15");
STRUCT_SIZE_INIT(user_regs_struct, "user_regs_struct");
if (!VALID_STRUCT(user_regs_struct)) {
/* Use this hardwired version -- sometimes the
* debuginfo doesn't pick this up even though
* it exists in the kernel; it shouldn't change.
*/
struct x86_64_user_regs_struct {
unsigned long r15, r14, r13, r12, bp, bx;
unsigned long r11, r10, r9, r8, ax, cx, dx;
unsigned long si, di, orig_ax, ip, cs;
unsigned long flags, sp, ss, fs_base;
unsigned long gs_base, ds, es, fs, gs;
};
ASSIGN_SIZE(user_regs_struct) =
sizeof(struct x86_64_user_regs_struct);
ASSIGN_OFFSET(user_regs_struct_rip) =
offsetof(struct x86_64_user_regs_struct, ip);
ASSIGN_OFFSET(user_regs_struct_rsp) =
offsetof(struct x86_64_user_regs_struct, sp);
ASSIGN_OFFSET(user_regs_struct_eflags) =
offsetof(struct x86_64_user_regs_struct, flags);
ASSIGN_OFFSET(user_regs_struct_cs) =
offsetof(struct x86_64_user_regs_struct, cs);
ASSIGN_OFFSET(user_regs_struct_ss) =
offsetof(struct x86_64_user_regs_struct, ss);
ASSIGN_OFFSET(user_regs_struct_rax) =
offsetof(struct x86_64_user_regs_struct, ax);
ASSIGN_OFFSET(user_regs_struct_rbx) =
offsetof(struct x86_64_user_regs_struct, bx);
ASSIGN_OFFSET(user_regs_struct_rcx) =
offsetof(struct x86_64_user_regs_struct, cx);
ASSIGN_OFFSET(user_regs_struct_rdx) =
offsetof(struct x86_64_user_regs_struct, dx);
ASSIGN_OFFSET(user_regs_struct_rsi) =
offsetof(struct x86_64_user_regs_struct, si);
ASSIGN_OFFSET(user_regs_struct_rdi) =
offsetof(struct x86_64_user_regs_struct, di);
ASSIGN_OFFSET(user_regs_struct_rbp) =
offsetof(struct x86_64_user_regs_struct, bp);
ASSIGN_OFFSET(user_regs_struct_r8) =
offsetof(struct x86_64_user_regs_struct, r8);
ASSIGN_OFFSET(user_regs_struct_r9) =
offsetof(struct x86_64_user_regs_struct, r9);
ASSIGN_OFFSET(user_regs_struct_r10) =
offsetof(struct x86_64_user_regs_struct, r10);
ASSIGN_OFFSET(user_regs_struct_r11) =
offsetof(struct x86_64_user_regs_struct, r11);
ASSIGN_OFFSET(user_regs_struct_r12) =
offsetof(struct x86_64_user_regs_struct, r12);
ASSIGN_OFFSET(user_regs_struct_r13) =
offsetof(struct x86_64_user_regs_struct, r13);
ASSIGN_OFFSET(user_regs_struct_r14) =
offsetof(struct x86_64_user_regs_struct, r14);
ASSIGN_OFFSET(user_regs_struct_r15) =
offsetof(struct x86_64_user_regs_struct, r15);
}
machdep->vmalloc_start = x86_64_vmalloc_start;
vt->vmalloc_start = machdep->vmalloc_start();
machdep->init_kernel_pgd();
if (STRUCT_EXISTS("x8664_pda"))
x86_64_cpu_pda_init();
else
x86_64_per_cpu_init();
x86_64_ist_init();
if (symbol_exists("repeat_nmi"))
machdep->flags |= NESTED_NMI;
machdep->in_alternate_stack = x86_64_in_alternate_stack;
if ((machdep->machspec->irqstack = (char *)
malloc(machdep->machspec->stkinfo.isize)) == NULL)
error(FATAL, "cannot malloc irqstack space.");
if (symbol_exists("irq_desc")) {
if (LKCD_KERNTYPES())
ARRAY_LENGTH_INIT_ALT(machdep->nr_irqs,
"irq_desc", "kernel_stat.irqs", NULL, 0);
else
ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc,
"irq_desc", NULL, 0);
} else if (kernel_symbol_exists("nr_irqs"))
get_symbol_data("nr_irqs", sizeof(unsigned int),
&machdep->nr_irqs);
else
machdep->nr_irqs = 224; /* NR_IRQS (at least) */
machdep->dump_irq = x86_64_dump_irq;
machdep->get_irq_affinity = x86_64_get_irq_affinity;
machdep->show_interrupts = x86_64_show_interrupts;
if (THIS_KERNEL_VERSION < LINUX(2,6,24))
machdep->line_number_hooks = x86_64_line_number_hooks;
if (!machdep->hz) {
machdep->hz = HZ;
if (THIS_KERNEL_VERSION >= LINUX(2,6,0))
machdep->hz = 1000;
}
machdep->section_size_bits = _SECTION_SIZE_BITS;
if (!machdep->max_physmem_bits) {
if (THIS_KERNEL_VERSION >= LINUX(2,6,31))
machdep->max_physmem_bits =
_MAX_PHYSMEM_BITS_2_6_31;
else if (THIS_KERNEL_VERSION >= LINUX(2,6,26))
machdep->max_physmem_bits =
_MAX_PHYSMEM_BITS_2_6_26;
else {
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
len = get_array_length("mem_section", &dim, 0);
/*
* Check for patched MAX_PHYSMEM_BITS.
*/
if (((len > 32) && !dim) ||
((len > 8192) && (dim == 1)))
machdep->max_physmem_bits =
_MAX_PHYSMEM_BITS_2_6_26;
}
}
if (XEN()) {
if (kt->xen_flags & WRITABLE_PAGE_TABLES) {
switch (machdep->flags & VM_FLAGS)
{
case VM_XEN:
case VM_2_6_11:
machdep->uvtop = x86_64_uvtop_level4_xen_wpt;
break;
case VM_XEN_RHEL4:
machdep->uvtop = x86_64_uvtop_level4_rhel4_xen_wpt;
break;
}
} else
machdep->uvtop = x86_64_uvtop_level4;
MEMBER_OFFSET_INIT(vcpu_guest_context_user_regs,
"vcpu_guest_context", "user_regs");
ASSIGN_OFFSET(cpu_user_regs_rsp) =
MEMBER_OFFSET("cpu_user_regs", "ss") - sizeof(ulong);
ASSIGN_OFFSET(cpu_user_regs_rip) =
MEMBER_OFFSET("cpu_user_regs", "cs") - sizeof(ulong);
}
x86_64_irq_eframe_link_init();
x86_64_framepointer_init();
x86_64_thread_return_init();
if (THIS_KERNEL_VERSION >= LINUX(2,6,28))
machdep->machspec->page_protnone = _PAGE_GLOBAL;
else
machdep->machspec->page_protnone = _PAGE_PSE;
STRUCT_SIZE_INIT(note_buf, "note_buf_t");
STRUCT_SIZE_INIT(elf_prstatus, "elf_prstatus");
MEMBER_OFFSET_INIT(elf_prstatus_pr_reg, "elf_prstatus",
"pr_reg");
STRUCT_SIZE_INIT(percpu_data, "percpu_data");
GART_init();
break;
case POST_VM:
init_unwind_table();
break;
case POST_INIT:
x86_64_post_init();
x86_64_get_active_set();
break;
case LOG_ONLY:
machdep->machspec = &x86_64_machine_specific;
x86_64_calc_phys_base();
break;
}
}
void
x86_64_dump_machdep_table(ulong arg)
{
int c, i, cpus;
int others;
struct machine_specific *ms;
ms = machdep->machspec;
others = 0;
fprintf(fp, " flags: %lx (", machdep->flags);
if (machdep->flags & KSYMS_START)
fprintf(fp, "%sKSYMS_START", others++ ? "|" : "");
if (machdep->flags & PT_REGS_INIT)
fprintf(fp, "%sPT_REGS_INIT", others++ ? "|" : "");
if (machdep->flags & MACHDEP_BT_TEXT)
fprintf(fp, "%sMACHDEP_BT_TEXT", others++ ? "|" : "");
if (machdep->flags & VM_ORIG)
fprintf(fp, "%sVM_ORIG", others++ ? "|" : "");
if (machdep->flags & VM_2_6_11)
fprintf(fp, "%sVM_2_6_11", others++ ? "|" : "");
if (machdep->flags & VM_XEN)
fprintf(fp, "%sVM_XEN", others++ ? "|" : "");
if (machdep->flags & VM_XEN_RHEL4)
fprintf(fp, "%sVM_XEN_RHEL4", others++ ? "|" : "");
if (machdep->flags & VMEMMAP)
fprintf(fp, "%sVMEMMAP", others++ ? "|" : "");
if (machdep->flags & NO_TSS)
fprintf(fp, "%sNO_TSS", others++ ? "|" : "");
if (machdep->flags & SCHED_TEXT)
fprintf(fp, "%sSCHED_TEXT", others++ ? "|" : "");
if (machdep->flags & PHYS_BASE)
fprintf(fp, "%sPHYS_BASE", others++ ? "|" : "");
if (machdep->flags & FRAMESIZE_DEBUG)
fprintf(fp, "%sFRAMESIZE_DEBUG", others++ ? "|" : "");
if (machdep->flags & FRAMEPOINTER)
fprintf(fp, "%sFRAMEPOINTER", others++ ? "|" : "");
if (machdep->flags & GART_REGION)
fprintf(fp, "%sGART_REGION", others++ ? "|" : "");
if (machdep->flags & NESTED_NMI)
fprintf(fp, "%sNESTED_NMI", others++ ? "|" : "");
if (machdep->flags & RANDOMIZED)
fprintf(fp, "%sRANDOMIZED", others++ ? "|" : "");
fprintf(fp, ")\n");
fprintf(fp, " kvbase: %lx\n", machdep->kvbase);
fprintf(fp, " identity_map_base: %lx\n", machdep->kvbase);
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: %ld\n", machdep->mhz);
fprintf(fp, " memsize: %llu (0x%llx)\n",
(ulonglong)machdep->memsize, (ulonglong)machdep->memsize);
fprintf(fp, " bits: %d\n", machdep->bits);
fprintf(fp, " nr_irqs: %d\n", machdep->nr_irqs);
fprintf(fp, " eframe_search: x86_64_eframe_search()\n");
if (machdep->back_trace == x86_64_back_trace_cmd)
fprintf(fp, " back_trace: x86_64_back_trace_cmd()\n");
else if (machdep->back_trace == x86_64_low_budget_back_trace_cmd)
fprintf(fp,
" back_trace: x86_64_low_budget_back_trace_cmd() %s\n",
kt->flags & DWARF_UNWIND ?
"-> x86_64_dwarf_back_trace_cmd()" : "");
else if (machdep->back_trace == x86_64_dwarf_back_trace_cmd)
fprintf(fp,
" back_trace: x86_64_dwarf_back_trace_cmd() %s\n",
kt->flags & DWARF_UNWIND ?
"" : "->x86_64_low_budget_back_trace_cmd()");
else
fprintf(fp, " back_trace: %lx\n",
(ulong)machdep->back_trace);
fprintf(fp, " processor_speed: x86_64_processor_speed()\n");
if (machdep->uvtop == x86_64_uvtop)
fprintf(fp, " uvtop: x86_64_uvtop()\n");
else if (machdep->uvtop == x86_64_uvtop_level4)
fprintf(fp, " uvtop: x86_64_uvtop_level4()\n");
else if (machdep->uvtop == x86_64_uvtop_level4_xen_wpt)
fprintf(fp, " uvtop: x86_64_uvtop_level4_xen_wpt()\n");
else if (machdep->uvtop == x86_64_uvtop_level4_rhel4_xen_wpt)
fprintf(fp, " uvtop: x86_64_uvtop_level4_rhel4_xen_wpt()\n");
else
fprintf(fp, " uvtop: %lx\n", (ulong)machdep->uvtop);
fprintf(fp, " kvtop: x86_64_kvtop()");
if (XEN() && (kt->xen_flags & WRITABLE_PAGE_TABLES))
fprintf(fp, " -> x86_64_kvtop_xen_wpt()");
fprintf(fp, "\n");
fprintf(fp, " get_task_pgd: x86_64_get_task_pgd()\n");
fprintf(fp, " dump_irq: x86_64_dump_irq()\n");
fprintf(fp, " get_irq_affinity: x86_64_get_irq_affinity()\n");
fprintf(fp, " show_interrupts: x86_64_show_interrupts()\n");
fprintf(fp, " get_stack_frame: x86_64_get_stack_frame()\n");
fprintf(fp, " get_stackbase: generic_get_stackbase()\n");
fprintf(fp, " get_stacktop: generic_get_stacktop()\n");
fprintf(fp, " translate_pte: x86_64_translate_pte()\n");
fprintf(fp, " memory_size: generic_memory_size()\n");
fprintf(fp, " vmalloc_start: x86_64_vmalloc_start()\n");
fprintf(fp, " is_task_addr: x86_64_is_task_addr()\n");
fprintf(fp, " verify_symbol: x86_64_verify_symbol()\n");
fprintf(fp, " dis_filter: x86_64_dis_filter()\n");
fprintf(fp, " cmd_mach: x86_64_cmd_mach()\n");
fprintf(fp, " get_smp_cpus: x86_64_get_smp_cpus()\n");
fprintf(fp, " is_kvaddr: x86_64_is_kvaddr()\n");
fprintf(fp, " is_uvaddr: x86_64_is_uvaddr()\n");
fprintf(fp, " verify_paddr: x86_64_verify_paddr()\n");
fprintf(fp, " get_kvaddr_ranges: x86_64_get_kvaddr_ranges()\n");
fprintf(fp, " init_kernel_pgd: x86_64_init_kernel_pgd()\n");
fprintf(fp, "clear_machdep_cache: x86_64_clear_machdep_cache()\n");
fprintf(fp, " xendump_p2m_create: %s\n", PVOPS_XEN() ?
"x86_64_pvops_xendump_p2m_create()" :
"x86_64_xendump_p2m_create()");
fprintf(fp, " get_xendump_regs: x86_64_get_xendump_regs()\n");
fprintf(fp, " xendump_panic_task: x86_64_xendump_panic_task()\n");
fprintf(fp, "xen_kdump_p2m_create: x86_64_xen_kdump_p2m_create()\n");
fprintf(fp, " line_number_hooks: %s\n", machdep->line_number_hooks ?
"x86_64_line_number_hooks" : "(unused)");
fprintf(fp, " verify_line_number: x86_64_verify_line_number()\n");
fprintf(fp, " value_to_symbol: x86_64_value_to_symbol()\n");
fprintf(fp, " in_alternate_stack: x86_64_in_alternate_stack()\n");
fprintf(fp, " last_pgd_read: %lx\n", machdep->last_pgd_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, " 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);
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);
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, " machspec: %016lx\n", (ulong)machdep->machspec);
fprintf(fp, " userspace_top: %016lx\n", (ulong)ms->userspace_top);
fprintf(fp, " page_offset: %016lx\n", (ulong)ms->page_offset);
fprintf(fp, " vmalloc_start_addr: %016lx\n", (ulong)ms->vmalloc_start_addr);
fprintf(fp, " vmalloc_end: %016lx\n", (ulong)ms->vmalloc_end);
fprintf(fp, " modules_vaddr: %016lx\n", (ulong)ms->modules_vaddr);
fprintf(fp, " modules_end: %016lx\n", (ulong)ms->modules_end);
fprintf(fp, " vmemmap_vaddr: %016lx %s\n", (ulong)ms->vmemmap_vaddr,
machdep->flags & VMEMMAP ? "" : "(unused)");
fprintf(fp, " vmemmap_end: %016lx %s\n", (ulong)ms->vmemmap_end,
machdep->flags & VMEMMAP ? "" : "(unused)");
fprintf(fp, " phys_base: %lx\n", (ulong)ms->phys_base);
fprintf(fp, " kernel_image_size: %ldMB\n", ms->kernel_image_size/MEGABYTES(1));
fprintf(fp, " GART_start: %lx\n", ms->GART_start);
fprintf(fp, " GART_end: %lx\n", ms->GART_end);
fprintf(fp, " pml4: %lx\n", (ulong)ms->pml4);
fprintf(fp, " last_pml4_read: %lx\n", (ulong)ms->last_pml4_read);
if (ms->upml) {
fprintf(fp, " upml: %lx\n", (ulong)ms->upml);
fprintf(fp, " last_upml_read: %lx\n", (ulong)ms->last_upml_read);
} else {
fprintf(fp, " upml: (unused)\n");
fprintf(fp, " last_upml_read: (unused)\n");
}
fprintf(fp, " irqstack: %lx\n", (ulong)ms->irqstack);
fprintf(fp, " irq_eframe_link: %ld\n", ms->irq_eframe_link);
fprintf(fp, " pto: %s",
machdep->flags & PT_REGS_INIT ? "\n" : "(uninitialized)\n");
if (machdep->flags & PT_REGS_INIT) {
fprintf(fp, " r15: %ld\n", ms->pto.r15);
fprintf(fp, " r14: %ld\n", ms->pto.r14);
fprintf(fp, " r13: %ld\n", ms->pto.r13);
fprintf(fp, " r12: %ld\n", ms->pto.r12);
fprintf(fp, " rbp: %ld\n", ms->pto.rbp);
fprintf(fp, " rbx: %ld\n", ms->pto.rbx);
fprintf(fp, " r11: %ld\n", ms->pto.r11);
fprintf(fp, " r10: %ld\n", ms->pto.r10);
fprintf(fp, " r9: %ld\n", ms->pto.r9);
fprintf(fp, " r8: %ld\n", ms->pto.r8);
fprintf(fp, " rax: %ld\n", ms->pto.rax);
fprintf(fp, " rcx: %ld\n", ms->pto.rcx);
fprintf(fp, " rdx: %ld\n", ms->pto.rdx);
fprintf(fp, " rsi: %ld\n", ms->pto.rsi);
fprintf(fp, " rdi: %ld\n", ms->pto.rdi);
fprintf(fp, " orig_rax: %ld\n", ms->pto.orig_rax);
fprintf(fp, " rip: %ld\n", ms->pto.rip);
fprintf(fp, " cs: %ld\n", ms->pto.cs);
fprintf(fp, " eflags: %ld\n", ms->pto.eflags);
fprintf(fp, " rsp: %ld\n", ms->pto.rsp);
fprintf(fp, " ss: %ld\n", ms->pto.ss);
}
#define CPU_SPACES(C) \
((C) < 10 ? 3 : (C) < 100 ? 2 : (C) < 1000 ? 1 : 0)
fprintf(fp, "%s current[%d]:%s",
space(CPU_SPACES(kt->cpus)), kt->cpus,
ms->current ? "\n " : " (unused)\n");
for (c = 0; ms->current && (c < kt->cpus); c++) {
if (c && !(c%4))
fprintf(fp, "\n ");
fprintf(fp, "%016lx ", ms->current[c]);
}
if (ms->current)
fprintf(fp, "\n");
fprintf(fp, "%s crash_nmi_rsp[%d]:%s",
space(CPU_SPACES(kt->cpus)), kt->cpus,
ms->crash_nmi_rsp ? "\n " : " (unused)\n");
for (c = 0; ms->crash_nmi_rsp && (c < kt->cpus); c++) {
if (c && !(c%4))
fprintf(fp, "\n ");
fprintf(fp, "%016lx ", ms->crash_nmi_rsp[c]);
}
if (ms->crash_nmi_rsp)
fprintf(fp, "\n");
fprintf(fp, " vsyscall_page: %lx\n", ms->vsyscall_page);
fprintf(fp, " thread_return: %lx\n", ms->thread_return);
fprintf(fp, " page_protnone: %lx\n", ms->page_protnone);
fprintf(fp, " stkinfo: isize: %d\n",
ms->stkinfo.isize);
fprintf(fp, " esize[%d]: %d,%d,%d,%d,%d,%d,%d%s\n",
MAX_EXCEPTION_STACKS,
ms->stkinfo.esize[0],
ms->stkinfo.esize[1],
ms->stkinfo.esize[2],
ms->stkinfo.esize[3],
ms->stkinfo.esize[4],
ms->stkinfo.esize[5],
ms->stkinfo.esize[6],
machdep->flags & NO_TSS ? " (NO TSS) " : " ");
fprintf(fp, " NMI_stack_index: %d\n",
ms->stkinfo.NMI_stack_index);
fprintf(fp, " exception_stacks:\n");
for (i = 0; i < MAX_EXCEPTION_STACKS; i++)
fprintf(fp, " [%d]: %s\n", i,
ms->stkinfo.exception_stacks[i]);
fprintf(fp, " ebase[%s][%d]:",
arg ? "NR_CPUS" : "cpus", MAX_EXCEPTION_STACKS);
cpus = arg ? NR_CPUS : kt->cpus;
for (c = 0; c < cpus; c++) {
fprintf(fp, "\n %s[%d]: ", c < 10 ? " " : "", c);
for (i = 0; i < MAX_EXCEPTION_STACKS; i++) {
fprintf(fp, "%016lx ", ms->stkinfo.ebase[c][i]);
if (i == 3)
fprintf(fp, "\n ");
}
}
fprintf(fp, "\n ibase[%s]:\n ",
arg ? "NR_CPUS" : "cpus");
for (c = 0; c < cpus; c++) {
if (c && !(c%4))
fprintf(fp, "\n ");
fprintf(fp, "%016lx ", ms->stkinfo.ibase[c]);
}
fprintf(fp, "\n");
}
/*
* Gather the cpu_pda array info, updating any smp-related items that
* were possibly bypassed or improperly initialized in kernel_init().
*/
static void
x86_64_cpu_pda_init(void)
{
int i, cpus, nr_pda, cpunumber, _cpu_pda, _boot_cpu_pda;
char *cpu_pda_buf;
ulong level4_pgt, data_offset, cpu_pda_addr;
struct syment *sp, *nsp;
ulong offset, istacksize;
_boot_cpu_pda = FALSE;
level4_pgt = 0;
STRUCT_SIZE_INIT(x8664_pda, "x8664_pda");
MEMBER_OFFSET_INIT(x8664_pda_pcurrent, "x8664_pda", "pcurrent");
MEMBER_OFFSET_INIT(x8664_pda_data_offset, "x8664_pda", "data_offset");
MEMBER_OFFSET_INIT(x8664_pda_kernelstack, "x8664_pda", "kernelstack");
MEMBER_OFFSET_INIT(x8664_pda_irqrsp, "x8664_pda", "irqrsp");
MEMBER_OFFSET_INIT(x8664_pda_irqstackptr, "x8664_pda", "irqstackptr");
MEMBER_OFFSET_INIT(x8664_pda_level4_pgt, "x8664_pda", "level4_pgt");
MEMBER_OFFSET_INIT(x8664_pda_cpunumber, "x8664_pda", "cpunumber");
MEMBER_OFFSET_INIT(x8664_pda_me, "x8664_pda", "me");
cpu_pda_buf = GETBUF(SIZE(x8664_pda));
if (LKCD_KERNTYPES()) {
if (symbol_exists("_cpu_pda"))
_cpu_pda = TRUE;
else
_cpu_pda = FALSE;
nr_pda = get_cpus_possible();
} else {
if (symbol_exists("_cpu_pda")) {
if (!(nr_pda = get_array_length("_cpu_pda", NULL, 0)))
nr_pda = NR_CPUS;
_cpu_pda = TRUE;
} else {
if (!(nr_pda = get_array_length("cpu_pda", NULL, 0)))
nr_pda = NR_CPUS;
_cpu_pda = FALSE;
}
}
if (_cpu_pda) {
if (symbol_exists("_boot_cpu_pda"))
_boot_cpu_pda = TRUE;
else
_boot_cpu_pda = FALSE;
}
if (DUMPFILE() &&
!(machdep->machspec->current = calloc(nr_pda, sizeof(ulong))))
error(FATAL, "cannot calloc %d x86_64 current pointers!\n",
nr_pda);
for (i = cpus = 0; i < nr_pda; i++) {
if (_cpu_pda) {
if (_boot_cpu_pda) {
if (!_CPU_PDA_READ2(i, cpu_pda_buf))
break;
} else {
if (!_CPU_PDA_READ(i, cpu_pda_buf))
break;
}
} else {
if (!CPU_PDA_READ(i, cpu_pda_buf))
break;
}
if (VALID_MEMBER(x8664_pda_level4_pgt)) {
level4_pgt = ULONG(cpu_pda_buf + OFFSET(x8664_pda_level4_pgt));
if (!VALID_LEVEL4_PGT_ADDR(level4_pgt))
break;
}
cpunumber = INT(cpu_pda_buf + OFFSET(x8664_pda_cpunumber));
if (cpunumber != cpus)
break;
cpus++;
if (VALID_MEMBER(x8664_pda_data_offset)) {
data_offset = ULONG(cpu_pda_buf +
OFFSET(x8664_pda_data_offset));
kt->__per_cpu_offset[i] = data_offset;
kt->flags |= PER_CPU_OFF;
} else
data_offset = 0;
machdep->machspec->stkinfo.ibase[i] = ULONG(cpu_pda_buf +
OFFSET(x8664_pda_irqstackptr));
if (DUMPFILE())
machdep->machspec->current[i] = ULONG(cpu_pda_buf +
OFFSET(x8664_pda_pcurrent));
if (CRASHDEBUG(2))
fprintf(fp,
"CPU%d: level4_pgt: %lx "
"data_offset: %lx pcurrent: %lx\n",
i, level4_pgt, data_offset,
DUMPFILE() ? machdep->machspec->current[i] : 0);
}
if (!LKCD_KERNTYPES() &&
(i = get_array_length("boot_cpu_stack", NULL, 0))) {
istacksize = i;
} else if ((sp = symbol_search("boot_cpu_stack")) &&
(nsp = next_symbol(NULL, sp))) {
istacksize = (nsp->value - sp->value) & ~(PAGESIZE()-1);
if (istacksize != 16384)
error(WARNING,
"calculated irqstack size of %ld != 16K?\n\n",
istacksize);
} else
istacksize = 16384;
machdep->machspec->stkinfo.isize = istacksize;