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ChibiOS
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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1783 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2010-03-26 14:29:50 +00:00
parent 9d3415bdf3
commit d451a36054
2 changed files with 38 additions and 3 deletions
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40
os/ports/GCC/ARMCMx/chcore.c
View File

@ -70,6 +70,40 @@ void SysTickVector(void) {
}
#if CORTEX_MODEL == CORTEX_M0
#define PUSH_CONTEXT(sp, prio) { \
asm volatile ("mrs %0, PSP \n\t" \
"sub %0, %0, #20 \n\t" \
"push {r3-r7} \n\t" \
"mov r0, r8 \n\t" \
"str r0, [%0, #20] \n\t" \
"mov r0, r9 \n\t" \
"str r0, [%0, #24] \n\t" \
"mov r0, r10 \n\t" \
"str r0, [%0, #28] \n\t" \
"mov r0, r11 \n\t" \
"str r0, [%0, #32] \n\t" \
"mov r0, lr \n\t" \
"str r0, [%0, #36] \n\t" \
: "=r" (sp) : "r" (sp), "r" (prio)); \
}
#define POP_CONTEXT(sp) { \
asm volatile ("ldr r0, [%0, #20] \n\t" \
"mov r8, r0 \n\t" \
"ldr r0, [%0, #24] \n\t" \
"mov r9, r0 \n\t" \
"ldr r0, [%0, #28] \n\t" \
"mov r10, r0 \n\t" \
"ldr r0, [%0, #32] \n\t" \
"mov r11, r0 \n\t" \
"ldr r0, [%0, #36] \n\t" \
"mov lr, r0 \n\t" \
"pop {r3-r7} \n\t" \
"add %0, %0, #20 \n\t" \
"msr PSP, %0 \n\t" \
"msr BASEPRI, r3 \n\t" \
"bx lr" : "=r" (sp) : "r" (sp)); \
}
#else /* CORTEX_MODEL != CORTEX_M0 */
#if !defined(CH_CURRP_REGISTER_CACHE)
#define PUSH_CONTEXT(sp, prio) { \
@ -79,7 +113,7 @@ void SysTickVector(void) {
}
#define POP_CONTEXT(sp) { \
asm volatile ("ldmia r12!, {r3-r11, lr} \n\t" \
asm volatile ("ldmia %0!, {r3-r11, lr} \n\t" \
"msr PSP, %0 \n\t" \
"msr BASEPRI, r3 \n\t" \
"bx lr" : "=r" (sp) : "r" (sp)); \
@ -113,7 +147,7 @@ void SysTickVector(void) {
__attribute__((naked))
#endif
void SVCallVector(Thread *ntp, Thread *otp) {
register struct intctx *sp_thd asm("r12");
register struct intctx *sp_thd asm("r2");
register uint32_t prio asm ("r3");
asm volatile ("mrs r3, BASEPRI" : "=r" (prio) : );
@ -132,7 +166,7 @@ void SVCallVector(Thread *ntp, Thread *otp) {
__attribute__((naked))
#endif
void PendSVVector(void) {
register struct intctx *sp_thd asm("r12");
register struct intctx *sp_thd asm("r2");
register uint32_t prio asm ("r3");
Thread *otp, *ntp;

1
os/ports/GCC/ARMCMx/chcore.h
View File

@ -108,6 +108,7 @@ struct intctx {
regarm_t r10;
regarm_t r11;
regarm_t lr_exc;
/* Start of the hardware saved frame.*/
regarm_t r0;
regarm_t r1;
regarm_t r2;