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Merge pull request #15100 from maribu/arm7-cast-align

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cpu/arm7_common: Fix compilation with -Wcast-align
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Marian Buschsieweke 2020-09-28 16:35:41 +02:00 committed by GitHub
commit c6fe777388
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1 changed files with 14 additions and 9 deletions
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23
cpu/arm7_common/arm_cpu.c
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@ -25,12 +25,16 @@
#define STACK_MARKER (0x77777777)
#define REGISTER_CNT (12)
__attribute__((used, section(".usr_stack"))) uint8_t usr_stack[USR_STACKSIZE];
__attribute__((used, section(".und_stack"))) uint8_t und_stack[UND_STACKSIZE];
__attribute__((used, section(".fiq_stack"))) uint8_t fiq_stack[FIQ_STACKSIZE];
__attribute__((used, section(".irq_stack"))) uint8_t irq_stack[ISR_STACKSIZE];
__attribute__((used, section(".abt_stack"))) uint8_t abt_stack[ABT_STACKSIZE];
__attribute__((used, section(".svc_stack"))) uint8_t svc_stack[ISR_STACKSIZE];
__attribute__((used, section(".usr_stack"), aligned(4))) uint8_t usr_stack[USR_STACKSIZE];
__attribute__((used, section(".und_stack"), aligned(4))) uint8_t und_stack[UND_STACKSIZE];
__attribute__((used, section(".fiq_stack"), aligned(4))) uint8_t fiq_stack[FIQ_STACKSIZE];
__attribute__((used, section(".irq_stack"), aligned(4))) uint8_t irq_stack[ISR_STACKSIZE];
__attribute__((used, section(".abt_stack"), aligned(4))) uint8_t abt_stack[ABT_STACKSIZE];
__attribute__((used, section(".svc_stack"), aligned(4))) uint8_t svc_stack[ISR_STACKSIZE];
#if (ISR_STACKSIZE % 4)
#error "ISR_STACKSIZE must be a multiple of 4"
#endif
void thread_yield_higher(void)
{
@ -129,13 +133,14 @@ void *thread_isr_stack_pointer(void)
/* This function returns the number of bytes used on the ISR stack */
int thread_isr_stack_usage(void)
{
uint32_t *ptr = (uint32_t*) &irq_stack[0];
uint32_t *ptr = (uint32_t *)(uintptr_t)&irq_stack[0];
uint32_t *end = (uint32_t *)(uintptr_t)&irq_stack[ISR_STACKSIZE];
while(((*ptr) == STACK_CANARY_WORD) && (ptr < (uint32_t*) &irq_stack[ISR_STACKSIZE])) {
while(((*ptr) == STACK_CANARY_WORD) && (ptr < end)) {
++ptr;
}
ptrdiff_t num_used_words = (uint32_t*) &irq_stack[ISR_STACKSIZE] - ptr;
ptrdiff_t num_used_words = (uintptr_t)end - (uintptr_t)ptr;
return num_used_words;
}