diff options
Diffstat (limited to 'libcpu')
| -rw-r--r-- | libcpu/arm/cortex-a/stack.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/libcpu/arm/cortex-a/stack.c b/libcpu/arm/cortex-a/stack.c index 0117514c61..5bb57ca4dd 100644 --- a/libcpu/arm/cortex-a/stack.c +++ b/libcpu/arm/cortex-a/stack.c @@ -31,9 +31,6 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, rt_uint8_t *stack_addr, void *texit) { rt_uint32_t *stk; -#ifdef RT_USING_FPU - rt_uint32_t i; -#endif stack_addr += sizeof(rt_uint32_t); stack_addr = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stack_addr, 8); @@ -67,10 +64,8 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, /* FPU context initialization matches context_gcc.S restore order: * Stack layout (high to low): FPEXC -> FPSCR -> D16-D31 -> D0-D15 */ - for (i = 0; i < VFP_DATA_NR; i++) - { - *(--stk) = 0; /* Initialize D0-D31 (64 words for 32 double regs) */ - } + stk -= VFP_DATA_NR; + rt_memset(stk, 0, VFP_DATA_NR * sizeof(rt_uint32_t)); /* Initialize D0-D31 (64 words for 32 double regs) */ *(--stk) = 0; /* FPSCR: Floating-Point Status and Control Register */ *(--stk) = 0x40000000; /* FPEXC: Enable FPU (bit 30 = EN) */ #endif |