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ChibiOS
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Cortex-M0 appears to work now. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1800 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
gdisirio 2010-03-28 18:03:03 +00:00
parent 89491f9ceb
commit 2f8c8bbaf6
1 changed files with 23 additions and 22 deletions
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45
os/ports/GCC/ARMCMx/chcore.c
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@ -72,33 +72,34 @@ void SysTickVector(void) {
#if CORTEX_MODEL == CORTEX_M0
#define PUSH_CONTEXT(sp, prio) { \
asm volatile ("mrs %0, PSP \n\t" \
"sub %0, %0, #40 \n\t" \
"stmia %0!, {r3-r7} \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" \
"mov r3, r8 \n\t" \
"str r3, [%0, #20] \n\t" \
"mov r3, r9 \n\t" \
"str r3, [%0, #24] \n\t" \
"mov r3, r10 \n\t" \
"str r3, [%0, #28] \n\t" \
"mov r3, r11 \n\t" \
"str r3, [%0, #32] \n\t" \
"mov r3, lr \n\t" \
"str r3, [%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" \
asm volatile ("ldr r3, [%0, #20] \n\t" \
"mov r8, r3 \n\t" \
"ldr r3, [%0, #24] \n\t" \
"mov r9, r3 \n\t" \
"ldr r3, [%0, #28] \n\t" \
"mov r10, r3 \n\t" \
"ldr r3, [%0, #32] \n\t" \
"mov r11, r3 \n\t" \
"ldr r3, [%0, #36] \n\t" \
"mov lr, r3 \n\t" \
"ldmia %0!, {r3-r7} \n\t" \
"add %0, %0, #20 \n\t" \
"msr PSP, %0 \n\t" \
"msr BASEPRI, r3 \n\t" \