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[MIPS] Miscellaneous cleanup in prologue analysis code

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We usually use backtrace term for dumping a call tree during
debug. Therefore this patch renames show_frametrace() into
show_backtrace() and show_trace() into show_raw_backtrace().

It also uses the new function print_ip_sym().

Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Franck Bui-Huu 2006-08-03 09:29:17 +02:00 committed by Ralf Baechle
parent cf495a3330
commit 87151ae39b
1 changed files with 14 additions and 19 deletions
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33
arch/mips/kernel/traps.c
View file

@ -74,21 +74,18 @@ void (*board_ejtag_handler_setup)(void);
void (*board_bind_eic_interrupt)(int irq, int regset);
static void show_trace(unsigned long *stack)
static void show_raw_backtrace(unsigned long *sp)
{
const int field = 2 * sizeof(unsigned long);
unsigned long addr;
printk("Call Trace:");
#ifdef CONFIG_KALLSYMS
printk("\n");
#endif
while (!kstack_end(stack)) {
addr = *stack++;
if (__kernel_text_address(addr)) {
printk(" [<%0*lx>] ", field, addr);
print_symbol("%s\n", addr);
}
while (!kstack_end(sp)) {
addr = *sp++;
if (__kernel_text_address(addr))
print_ip_sym(addr);
}
printk("\n");
}
@ -104,22 +101,20 @@ __setup("raw_show_trace", set_raw_show_trace);
extern unsigned long unwind_stack(struct task_struct *task,
unsigned long **sp, unsigned long pc);
static void show_frametrace(struct task_struct *task, struct pt_regs *regs)
static void show_backtrace(struct task_struct *task, struct pt_regs *regs)
{
const int field = 2 * sizeof(unsigned long);
unsigned long *stack = (long *)regs->regs[29];
unsigned long *sp = (long *)regs->regs[29];
unsigned long pc = regs->cp0_epc;
int top = 1;
if (raw_show_trace || !__kernel_text_address(pc)) {
show_trace(stack);
show_raw_backtrace(sp);
return;
}
printk("Call Trace:\n");
while (__kernel_text_address(pc)) {
printk(" [<%0*lx>] ", field, pc);
print_symbol("%s\n", pc);
pc = unwind_stack(task, &stack, pc);
print_ip_sym(pc);
pc = unwind_stack(task, &sp, pc);
if (top && pc == 0)
pc = regs->regs[31]; /* leaf? */
top = 0;
@ -127,7 +122,7 @@ static void show_frametrace(struct task_struct *task, struct pt_regs *regs)
printk("\n");
}
#else
#define show_frametrace(task, r) show_trace((long *)(r)->regs[29]);
#define show_backtrace(task, r) show_raw_backtrace((long *)(r)->regs[29]);
#endif
/*
@ -160,7 +155,7 @@ static void show_stacktrace(struct task_struct *task, struct pt_regs *regs)
i++;
}
printk("\n");
show_frametrace(task, regs);
show_backtrace(task, regs);
}
static noinline void prepare_frametrace(struct pt_regs *regs)
@ -211,11 +206,11 @@ void dump_stack(void)
if (!raw_show_trace) {
struct pt_regs regs;
prepare_frametrace(&regs);
show_frametrace(current, &regs);
show_backtrace(current, &regs);
return;
}
#endif
show_trace(&stack);
show_raw_backtrace(&stack);
}
EXPORT_SYMBOL(dump_stack);