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#include <nuttx/config.h>
#include <stdint.h>
#include "up_arch.h"
#include "nvic.h"
void __cyg_profile_func_enter(void *func, void *caller) __attribute__((naked, no_instrument_function));
void __cyg_profile_func_exit(void *func, void *caller) __attribute__((naked, no_instrument_function));
void __stack_overflow_trap(void) __attribute__((naked, no_instrument_function));
void
__stack_overflow_trap(void)
{
/* if we get here, the stack has overflowed */
/* force hard fault */
uint32_t regval;
/* Set up for the system reset, retaining the priority group from the
* the AIRCR register.
*/
regval = getreg32(NVIC_INTCTRL);
regval |= NVIC_INTCTRL_NMIPENDSET;
putreg32(regval, NVIC_INTCTRL);
/* trap */
//asm ( "b .");
}
void
__cyg_profile_func_enter(void *func, void *caller)
{
asm volatile (
" mrs r2, ipsr \n" /* Check whether we are in interrupt mode */
" cmp r2, #0 \n" /* since we don't switch r10 on interrupt entry, we */
" bne 2f \n" /* can't detect overflow of the interrupt stack. */
" \n"
" sub r2, sp, #68 \n" /* compute stack pointer as though we just stacked a full frame */
" mrs r1, control \n" /* Test CONTROL.FPCA to see whether we also need room for the FP */
" tst r1, #4 \n" /* context. */
" beq 1f \n"
" sub r2, r2, #136 \n" /* subtract FP context frame size */
"1: \n"
" cmp r2, r10 \n" /* compare stack with limit */
" bgt 2f \n" /* stack is above limit and thus OK */
" b __stack_overflow_trap\n"
"2: \n"
" bx lr \n"
);
}
void
__cyg_profile_func_exit(void *func, void *caller)
{
asm volatile("bx lr");
}
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