From 9fe3cbf76f8b2e711c3658715206a26c635c43f4 Mon Sep 17 00:00:00 2001 From: aozima Date: Fri, 5 Jun 2015 19:09:13 +0800 Subject: [PATCH] Align thread stack to 8 byte. --- libcpu/arm/arm926/stack.c | 32 ++++++++++++++++++-------------- 1 file changed, 18 insertions(+), 14 deletions(-) diff --git a/libcpu/arm/arm926/stack.c b/libcpu/arm/arm926/stack.c index 53508e5ac..ee29aad3a 100644 --- a/libcpu/arm/arm926/stack.c +++ b/libcpu/arm/arm926/stack.c @@ -50,21 +50,25 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, { rt_uint32_t *stk; - stk = (rt_uint32_t*)stack_addr; - *(stk) = (rt_uint32_t)tentry; /* entry point */ + //stk = (rt_uint32_t*)stack_addr; + stack_addr += sizeof(rt_uint32_t); + stack_addr = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stack_addr, 8); + stk = (rt_uint32_t *)stack_addr; + + *(--stk) = (rt_uint32_t)tentry; /* entry point */ *(--stk) = (rt_uint32_t)texit; /* lr */ - *(--stk) = 0; /* r12 */ - *(--stk) = 0; /* r11 */ - *(--stk) = 0; /* r10 */ - *(--stk) = 0; /* r9 */ - *(--stk) = 0; /* r8 */ - *(--stk) = 0; /* r7 */ - *(--stk) = 0; /* r6 */ - *(--stk) = 0; /* r5 */ - *(--stk) = 0; /* r4 */ - *(--stk) = 0; /* r3 */ - *(--stk) = 0; /* r2 */ - *(--stk) = 0; /* r1 */ + *(--stk) = 0xdeadbeef; /* r12 */ + *(--stk) = 0xdeadbeef; /* r11 */ + *(--stk) = 0xdeadbeef; /* r10 */ + *(--stk) = 0xdeadbeef; /* r9 */ + *(--stk) = 0xdeadbeef; /* r8 */ + *(--stk) = 0xdeadbeef; /* r7 */ + *(--stk) = 0xdeadbeef; /* r6 */ + *(--stk) = 0xdeadbeef; /* r5 */ + *(--stk) = 0xdeadbeef; /* r4 */ + *(--stk) = 0xdeadbeef; /* r3 */ + *(--stk) = 0xdeadbeef; /* r2 */ + *(--stk) = 0xdeadbeef; /* r1 */ *(--stk) = (rt_uint32_t)parameter; /* r0 : argument */ /* cpsr */ if ((rt_uint32_t)tentry & 0x01) -- GitLab