/**
\brief Test case: TC_CoreFunc_MSPLIM
\details
- Check if __get_MSPLIM and __set_MSPLIM intrinsic can be used to manipulate main stack pointer limit.
*/
void TC_CoreFunc_MSPLIM (void) {
// don't use stack for this variables
static uint32_t orig;
static uint32_t msplim;
static uint32_t result;
static uint32_t ctrl;
ctrl = __get_CONTROL();
__set_CONTROL(ctrl | CONTROL_SPSEL_Msk); // switch to PSP
orig = __get_MSPLIM();
msplim = orig + 0x12345678U;
__set_MSPLIM(msplim);
result = __get_MSPLIM();
__set_MSPLIM(orig);
__set_CONTROL(ctrl);
#if (!(defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) && \
(!defined (__ARM_FEATURE_CMSE ) || (__ARM_FEATURE_CMSE < 3)))
// without main extensions, the non-secure MSPLIM is RAZ/WI
ASSERT_TRUE(result == 0U);
#else
ASSERT_TRUE(result == msplim);
#endif
}
/*----------------------------------------------------------------------------
Reset Handler called on controller reset
*----------------------------------------------------------------------------*/
void Reset_Handler(void) {
uint32_t *pSrc, *pDest;
uint32_t *pTable __attribute__((unused));
/* Firstly it copies data from read only memory to RAM.
* There are two schemes to copy. One can copy more than one sections.
* Another can copy only one section. The former scheme needs more
* instructions and read-only data to implement than the latter.
* Macro __STARTUP_COPY_MULTIPLE is used to choose between two schemes.
*/
#ifdef __STARTUP_COPY_MULTIPLE
/* Multiple sections scheme.
*
* Between symbol address __copy_table_start__ and __copy_table_end__,
* there are array of triplets, each of which specify:
* offset 0: LMA of start of a section to copy from
* offset 4: VMA of start of a section to copy to
* offset 8: size of the section to copy. Must be multiply of 4
*
* All addresses must be aligned to 4 bytes boundary.
*/
pTable = &__copy_table_start__;
for (; pTable < &__copy_table_end__; pTable = pTable + 3) {
pSrc = (uint32_t*)*(pTable + 0);
pDest = (uint32_t*)*(pTable + 1);
for (; pDest < (uint32_t*)(*(pTable + 1) + *(pTable + 2)) ; ) {
*pDest++ = *pSrc++;
}
}
#else
/* Single section scheme.
*
* The ranges of copy from/to are specified by following symbols
* __etext: LMA of start of the section to copy from. Usually end of text
* __data_start__: VMA of start of the section to copy to
* __data_end__: VMA of end of the section to copy to
*
* All addresses must be aligned to 4 bytes boundary.
*/
pSrc = &__etext;
pDest = &__data_start__;
for ( ; pDest < &__data_end__ ; ) {
*pDest++ = *pSrc++;
}
#endif /*__STARTUP_COPY_MULTIPLE */
/* This part of work usually is done in C library startup code.
* Otherwise, define this macro to enable it in this startup.
*
* There are two schemes too.
* One can clear multiple BSS sections. Another can only clear one section.
* The former is more size expensive than the latter.
*
* Define macro __STARTUP_CLEAR_BSS_MULTIPLE to choose the former.
* Otherwise define macro __STARTUP_CLEAR_BSS to choose the later.
*/
#ifdef __STARTUP_CLEAR_BSS_MULTIPLE
/* Multiple sections scheme.
*
* Between symbol address __copy_table_start__ and __copy_table_end__,
* there are array of tuples specifying:
* offset 0: Start of a BSS section
* offset 4: Size of this BSS section. Must be multiply of 4
*/
pTable = &__zero_table_start__;
for (; pTable < &__zero_table_end__; pTable = pTable + 2) {
pDest = (uint32_t*)*(pTable + 0);
for (; pDest < (uint32_t*)(*(pTable + 0) + *(pTable + 1)) ; ) {
*pDest++ = 0;
}
}
#elif defined (__STARTUP_CLEAR_BSS)
/* Single BSS section scheme.
*
* The BSS section is specified by following symbols
* __bss_start__: start of the BSS section.
* __bss_end__: end of the BSS section.
*
* Both addresses must be aligned to 4 bytes boundary.
*/
pDest = &__bss_start__;
for ( ; pDest < &__bss_end__ ; ) {
*pDest++ = 0UL;
}
#endif /* __STARTUP_CLEAR_BSS_MULTIPLE || __STARTUP_CLEAR_BSS */
__set_MSPLIM((uint32_t)&__StackLimit);
SystemInit(); /* CMSIS System Initialization */
_start(); /* Enter PreeMain (C library entry point) */
}
