rt-thread-official/libcpu/arm/fm3/fault_iar.S

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;/*
; * File : fault_iar.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2009, RT-Thread Development Team
; *
; * The license and distribution terms for this file may be
; * found in the file LICENSE in this distribution or at
; * http://www.rt-thread.org/license/LICENSE
; *
; * Change Logs:
; * Date Author Notes
; * 2009-01-17 Bernard first version
; */
SECTION .text:CODE(2)
THUMB
REQUIRE8
PRESERVE8
IMPORT rt_hw_hard_fault_exception
EXPORT rt_hw_hard_fault
rt_hw_hard_fault:
; get current context
MRS r0, psp ; get fault thread stack pointer
PUSH {lr}
BL rt_hw_hard_fault_exception
POP {lr}
ORR lr, lr, #0x04
BX lr
END