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Prevent optimization in reset handler for QEMU MPS2 (#484)

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alfred gedeon 2020-12-22 22:39:33 -08:00 • committed by GitHub
parent 28548e06fe
commit 1c99d9f200
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2 changed files with 9 additions and 3 deletions
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7
FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/init/startup.c
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@ -41,8 +41,11 @@ void __attribute__((weak)) EthernetISR (void);
extern uint32_t _estack, _sidata, _sdata, _edata, _sbss, _ebss;
__attribute__((naked)) void Reset_Handler(void)
{
/* Prevent optimization so gcc does not replace code with memcpy */
__attribute__((optimize("O0")))
__attribute__((naked))
void Reset_Handler(void)
{
// set stack pointer
__asm volatile ("ldr r0, =_estack");
__asm volatile ("mov sp, r0");