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| author | yangjie11 <[email protected]> | 2020-11-18 09:56:35 +0800 |
|---|---|---|
| committer | GitHub <[email protected]> | 2020-11-18 09:56:35 +0800 |
| commit | d4a682e8d97fa131e5a8d795f8c5451d55cdd5b0 (patch) | |
| tree | 4773b40cb012475c5daf74bfd55707e141477669 /libcpu/arm/cortex-a/stack.c | |
| parent | 2b98f4720c827ae1850df78299f6b273d568c8c7 (diff) | |
| parent | 2ef3c9d861f55253620996a94831a4be31ca6620 (diff) | |
Merge pull request #3 from RT-Thread/master
sync
Diffstat (limited to 'libcpu/arm/cortex-a/stack.c')
| -rw-r--r-- | libcpu/arm/cortex-a/stack.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libcpu/arm/cortex-a/stack.c b/libcpu/arm/cortex-a/stack.c index 1d3ebcb9e6..07d795ab5b 100644 --- a/libcpu/arm/cortex-a/stack.c +++ b/libcpu/arm/cortex-a/stack.c @@ -50,13 +50,20 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, *(--stk) = 0xdeadbeef; /* r2 */ *(--stk) = 0xdeadbeef; /* r1 */ *(--stk) = (rt_uint32_t)parameter; /* r0 : argument */ - /* cpsr */ if ((rt_uint32_t)tentry & 0x01) *(--stk) = SVCMODE | 0x20; /* thumb mode */ else *(--stk) = SVCMODE; /* arm mode */ +#ifdef RT_USING_LWP + *(--stk) = 0; /* user lr */ + *(--stk) = 0; /* user sp*/ +#endif +#ifdef RT_USING_FPU + *(--stk) = 0; /* not use fpu*/ +#endif + /* return task's current stack address */ return (rt_uint8_t *)stk; } |