mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-26 19:36:41 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
143 lines
3.2 KiB
C
143 lines
3.2 KiB
C
/*
|
||
* arch/v850/kernel/bug.c -- Bug reporting functions
|
||
*
|
||
* Copyright (C) 2001,02,03 NEC Electronics Corporation
|
||
* Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
|
||
*
|
||
* This file is subject to the terms and conditions of the GNU General
|
||
* Public License. See the file COPYING in the main directory of this
|
||
* archive for more details.
|
||
*
|
||
* Written by Miles Bader <miles@gnu.org>
|
||
*/
|
||
|
||
#include <linux/kernel.h>
|
||
#include <linux/reboot.h>
|
||
#include <linux/sched.h>
|
||
#include <linux/module.h>
|
||
|
||
#include <asm/errno.h>
|
||
#include <asm/ptrace.h>
|
||
#include <asm/processor.h>
|
||
#include <asm/current.h>
|
||
|
||
/* We should use __builtin_return_address, but it doesn't work in gcc-2.90
|
||
(which is currently our standard compiler on the v850). */
|
||
#define ret_addr() ({ register u32 lp asm ("lp"); lp; })
|
||
#define stack_addr() ({ register u32 sp asm ("sp"); sp; })
|
||
|
||
void __bug ()
|
||
{
|
||
printk (KERN_CRIT "kernel BUG at PC 0x%x (SP ~0x%x)!\n",
|
||
ret_addr() - 4, /* - 4 for `jarl' */
|
||
stack_addr());
|
||
machine_halt ();
|
||
}
|
||
|
||
int bad_trap (int trap_num, struct pt_regs *regs)
|
||
{
|
||
printk (KERN_CRIT
|
||
"unimplemented trap %d called at 0x%08lx, pid %d!\n",
|
||
trap_num, regs->pc, current->pid);
|
||
return -ENOSYS;
|
||
}
|
||
|
||
#ifdef CONFIG_RESET_GUARD
|
||
void unexpected_reset (unsigned long ret_addr, unsigned long kmode,
|
||
struct task_struct *task, unsigned long sp)
|
||
{
|
||
printk (KERN_CRIT
|
||
"unexpected reset in %s mode, pid %d"
|
||
" (ret_addr = 0x%lx, sp = 0x%lx)\n",
|
||
kmode ? "kernel" : "user",
|
||
task ? task->pid : -1,
|
||
ret_addr, sp);
|
||
|
||
machine_halt ();
|
||
}
|
||
#endif /* CONFIG_RESET_GUARD */
|
||
|
||
|
||
|
||
struct spec_reg_name {
|
||
const char *name;
|
||
int gpr;
|
||
};
|
||
|
||
struct spec_reg_name spec_reg_names[] = {
|
||
{ "sp", GPR_SP },
|
||
{ "gp", GPR_GP },
|
||
{ "tp", GPR_TP },
|
||
{ "ep", GPR_EP },
|
||
{ "lp", GPR_LP },
|
||
{ 0, 0 }
|
||
};
|
||
|
||
void show_regs (struct pt_regs *regs)
|
||
{
|
||
int gpr_base, gpr_offs;
|
||
|
||
printk (" pc 0x%08lx psw 0x%08lx kernel_mode %d\n",
|
||
regs->pc, regs->psw, regs->kernel_mode);
|
||
printk (" ctpc 0x%08lx ctpsw 0x%08lx ctbp 0x%08lx\n",
|
||
regs->ctpc, regs->ctpsw, regs->ctbp);
|
||
|
||
for (gpr_base = 0; gpr_base < NUM_GPRS; gpr_base += 4) {
|
||
for (gpr_offs = 0; gpr_offs < 4; gpr_offs++) {
|
||
int gpr = gpr_base + gpr_offs;
|
||
long val = regs->gpr[gpr];
|
||
struct spec_reg_name *srn;
|
||
|
||
for (srn = spec_reg_names; srn->name; srn++)
|
||
if (srn->gpr == gpr)
|
||
break;
|
||
|
||
if (srn->name)
|
||
printk ("%7s 0x%08lx", srn->name, val);
|
||
else
|
||
printk (" r%02d 0x%08lx", gpr, val);
|
||
}
|
||
|
||
printk ("\n");
|
||
}
|
||
}
|
||
|
||
/*
|
||
* TASK is a pointer to the task whose backtrace we want to see (or NULL
|
||
* for current task), SP is the stack pointer of the first frame that
|
||
* should be shown in the back trace (or NULL if the entire call-chain of
|
||
* the task should be shown).
|
||
*/
|
||
void show_stack (struct task_struct *task, unsigned long *sp)
|
||
{
|
||
unsigned long addr, end;
|
||
|
||
if (sp)
|
||
addr = (unsigned long)sp;
|
||
else if (task)
|
||
addr = task_sp (task);
|
||
else
|
||
addr = stack_addr ();
|
||
|
||
addr = addr & ~3;
|
||
end = (addr + THREAD_SIZE - 1) & THREAD_MASK;
|
||
|
||
while (addr < end) {
|
||
printk ("%8lX: ", addr);
|
||
while (addr < end) {
|
||
printk (" %8lX", *(unsigned long *)addr);
|
||
addr += sizeof (unsigned long);
|
||
if (! (addr & 0xF))
|
||
break;
|
||
}
|
||
printk ("\n");
|
||
}
|
||
}
|
||
|
||
void dump_stack ()
|
||
{
|
||
show_stack (0, 0);
|
||
}
|
||
|
||
EXPORT_SYMBOL(dump_stack);
|