diff options
Diffstat (limited to 'core/cortex-m0/watchdog.c')
| -rw-r--r-- | core/cortex-m0/watchdog.c | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/core/cortex-m0/watchdog.c b/core/cortex-m0/watchdog.c deleted file mode 100644 index 9961922ee5..0000000000 --- a/core/cortex-m0/watchdog.c +++ /dev/null @@ -1,53 +0,0 @@ -/* Copyright 2014 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* Watchdog common code */ - -#include "common.h" -#include "panic.h" -#include "task.h" -#include "timer.h" -#include "watchdog.h" - -/* - * As defined by Armv7-M Reference Manual B1.5.6 "Exception Entry Behavior", - * the structure of the saved context on the stack is: - * r0, r1, r2, r3, r12, lr, pc, psr, ... - */ -#define STACK_IDX_REG_LR 5 -#define STACK_IDX_REG_PC 6 - -void watchdog_trace(uint32_t excep_lr, uint32_t excep_sp) -{ - uint32_t psp; - uint32_t *stack; - - asm("mrs %0, psp" : "=r"(psp)); - if ((excep_lr & 0xf) == 1) { - /* we were already in exception context */ - stack = (uint32_t *)excep_sp; - } else { - /* we were in task context */ - stack = (uint32_t *)psp; - } - - /* Log PC. If we were in task context, log task id too. */ -#ifdef CONFIG_SOFTWARE_PANIC - panic_set_reason(PANIC_SW_WATCHDOG, stack[STACK_IDX_REG_PC], - (excep_lr & 0xf) == 1 ? 0xff : task_get_current()); -#endif - - panic_printf("### WATCHDOG PC=%08x / LR=%08x / pSP=%08x ", - stack[STACK_IDX_REG_PC], stack[STACK_IDX_REG_LR], psp); - if ((excep_lr & 0xf) == 1) - panic_puts("(exc) ###\n"); - else - panic_printf("(task %d) ###\n", task_get_current()); - - /* If we are blocked in a high priority IT handler, the following debug - * messages might not appear but they are useless in that situation. */ - timer_print_info(); - task_print_list(); -} |