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cpu/arm7_common: Align thread stacks to 32 bit

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This didn't change binaries for me. Either the linker script already took care
of it through the section names of the stacks, or I just was lucky. If I was
just luck, this fixes a bug. If not, it makes the hidden alignment explicit in
the C code, so that code review is easier.
This commit is contained in:
Marian Buschsieweke 2020-09-28 10:51:45 +02:00
parent 4243c180cb
commit cc2382220f
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GPG Key ID: 61F64C6599B1539F
1 changed files with 6 additions and 6 deletions
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12
cpu/arm7_common/arm_cpu.c
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@ -25,12 +25,12 @@
#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];
void thread_yield_higher(void)
{