Imagelibrary/rt-thread
1
0
Fork 0
mirror of https://github.com/RT-Thread/rt-thread.git synced 2025-12-28 01:50:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

update libcpu/arm/cortex-m4: support lazy stack optimized.

Browse Source
This commit is contained in:
aozima
2013-06-23 16:28:55 +08:00
parent b045f93b47
commit 34d59ccb0f
4 changed files with 151 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
libcpu/arm/cortex-m4/cpuport.c
View File

@@ -16,6 +16,7 @@
* 2012-12-11 lgnq fixed the coding style.
* 2012-12-23 aozima stack addr align to 8byte.
* 2012-12-29 Bernard Add exception hook.
* 2013-06-23 aozima support lazy stack optimized.
*/
#include <rtthread.h>
@@ -32,6 +33,37 @@ rt_uint32_t rt_thread_switch_interrupt_flag;
static rt_err_t (*rt_exception_hook)(void *context) = RT_NULL;
struct exception_stack_frame
{
rt_uint32_t r0;
rt_uint32_t r1;
rt_uint32_t r2;
rt_uint32_t r3;
rt_uint32_t r12;
rt_uint32_t lr;
rt_uint32_t pc;
rt_uint32_t psr;
};
struct stack_frame
{
#if USE_FPU
rt_uint32_t flag;
#endif /* USE_FPU */
/* r4 ~ r11 register */
rt_uint32_t r4;
rt_uint32_t r5;
rt_uint32_t r6;
rt_uint32_t r7;
rt_uint32_t r8;
rt_uint32_t r9;
rt_uint32_t r10;
rt_uint32_t r11;
struct exception_stack_frame exception_stack_frame;
};
struct exception_stack_frame_fpu
{
rt_uint32_t r0;
rt_uint32_t r1;
@@ -65,8 +97,10 @@ struct exception_stack_frame
#endif
};
struct stack_frame
struct stack_frame_fpu
{
rt_uint32_t flag;
/* r4 ~ r11 register */
rt_uint32_t r4;
rt_uint32_t r5;
@@ -97,7 +131,7 @@ struct stack_frame
rt_uint32_t s31;
#endif
struct exception_stack_frame exception_stack_frame;
struct exception_stack_frame_fpu exception_stack_frame;
};
rt_uint8_t *rt_hw_stack_init(void *tentry,
@@ -130,6 +164,10 @@ rt_uint8_t *rt_hw_stack_init(void *tentry,
stack_frame->exception_stack_frame.pc = (unsigned long)tentry; /* entry point, pc */
stack_frame->exception_stack_frame.psr = 0x01000000L; /* PSR */
#if USE_FPU
stack_frame->flag = 0;
#endif /* USE_FPU */
/* return task's current stack address */
return stk;
}
@@ -141,20 +179,20 @@ rt_uint8_t *rt_hw_stack_init(void *tentry,
*/
void rt_hw_exception_install(rt_err_t (*exception_handle)(void* context))
{
rt_exception_hook = exception_handle;
rt_exception_hook = exception_handle;
}
void rt_hw_hard_fault_exception(struct exception_stack_frame *exception_stack)
{
extern long list_thread(void);
extern long list_thread(void);
if (rt_exception_hook != RT_NULL)
{
rt_err_t result;
if (rt_exception_hook != RT_NULL)
{
rt_err_t result;
result = rt_exception_hook(exception_stack);
if (result == RT_EOK) return;
}
result = rt_exception_hook(exception_stack);
if (result == RT_EOK) return;
}
rt_kprintf("psr: 0x%08x\n", exception_stack->psr);
rt_kprintf(" pc: 0x%08x\n", exception_stack->pc);