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#include <linux/kallsyms.h>
#include <linux/uaccess.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <asm/traps.h>
#include <asm/stacktrace.h>
#include <asm/system_misc.h>
#include <linux/mtk_ram_console.h>
static inline void aee_print_ip_sym(unsigned long ip)
{
char buf[256];
snprintf(buf, sizeof(buf), "[<%p>] %pS\n", (void *) ip, (void *) ip);
aee_sram_fiq_log(buf);
}
static void dump_backtrace_entry(unsigned long where, unsigned long stack)
{
aee_print_ip_sym(where);
}
void aee_dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
{
struct stackframe frame;
const register unsigned long current_sp asm ("sp");
pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);
if (!tsk)
tsk = current;
if (regs) {
frame.fp = regs->regs[29];
frame.sp = regs->sp;
frame.pc = regs->pc;
} else if (tsk == current) {
frame.fp = (unsigned long)__builtin_frame_address(0);
frame.sp = current_sp;
frame.pc = (unsigned long)aee_dump_backtrace;
} else {
/*
* task blocked in __switch_to
*/
frame.fp = thread_saved_fp(tsk);
frame.sp = thread_saved_sp(tsk);
frame.pc = thread_saved_pc(tsk);
}
aee_sram_fiq_log("Call trace:\n");
while (1) {
unsigned long where = frame.pc;
int ret;
ret = unwind_frame(&frame);
if (ret < 0)
break;
dump_backtrace_entry(where, frame.sp);
}
}
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