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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-01-08 12:09:18 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-01-08 12:09:18 +0000 |
| commit | eb665ad2407a28c57a6d5802b3bcfa474b8c6e3f (patch) | |
| tree | b937607d434f1cb1461b41d7c1cca4cff3a959d8 /os/ports/IAR/ARMCMx/chcore_v6m.c | |
| parent | 7dc2098ccdebe3b2f54f1c9a60d3355bf0d59489 (diff) | |
| download | ChibiOS-eb665ad2407a28c57a6d5802b3bcfa474b8c6e3f.tar.gz ChibiOS-eb665ad2407a28c57a6d5802b3bcfa474b8c6e3f.tar.bz2 ChibiOS-eb665ad2407a28c57a6d5802b3bcfa474b8c6e3f.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2615 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/ports/IAR/ARMCMx/chcore_v6m.c')
| -rw-r--r-- | os/ports/IAR/ARMCMx/chcore_v6m.c | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/os/ports/IAR/ARMCMx/chcore_v6m.c b/os/ports/IAR/ARMCMx/chcore_v6m.c index 4c8ab0646..25b360809 100644 --- a/os/ports/IAR/ARMCMx/chcore_v6m.c +++ b/os/ports/IAR/ARMCMx/chcore_v6m.c @@ -53,94 +53,4 @@ CH_IRQ_HANDLER(SysTickVector) { CH_IRQ_EPILOGUE();
}
-/**
- * @brief Post-IRQ switch code.
- * @details On entry the stack and the registers are restored by the exception
- * return, the PC value is stored in @p _port_saved_pc, the interrupts
- * are disabled.
- */
-void _port_switch_from_irq(void) {
- /* Note, saves r4 to make space for the PC.*/
- asm ("push {r0, r1, r2, r3, r4} \n\t"
- "mrs r0, APSR \n\t"
- "mov r1, r12 \n\t"
- "push {r0, r1, lr} \n\t"
- "ldr r0, =_port_saved_pc \n\t"
- "ldr r0, [r0] \n\t"
- "add r0, r0, #1 \n\t"
- "str r0, [sp, #28]");
-
- chSchDoRescheduleI();
-
- /* Note, the last registers are restored alone after re-enabling the
- interrupts in order to minimize the (very remote and unlikely)
- possibility that the stack is filled by continuous and saturating
- interrupts that would not allow that last words to be pulled out of
- the stack.*/
- asm ("pop {r0, r1, r2} \n\t"
- "mov r12, r1 \n\t"
- "msr APSR, r0 \n\t"
- "mov lr, r2 \n\t"
- "cpsie i \n\t"
- "pop {r0, r1, r2, r3, pc}");
-}
-
-#define PUSH_CONTEXT(sp) { \
- asm ("push {r4, r5, r6, r7, lr} \n\t" \
- "mov r4, r8 \n\t" \
- "mov r5, r9 \n\t" \
- "mov r6, r10 \n\t" \
- "mov r7, r11 \n\t" \
- "push {r4, r5, r6, r7}"); \
-}
-
-#define POP_CONTEXT(sp) { \
- asm ("pop {r4, r5, r6, r7} \n\t" \
- "mov r8, r4 \n\t" \
- "mov r9, r5 \n\t" \
- "mov r10, r6 \n\t" \
- "mov r11, r7 \n\t" \
- "pop {r4, r5, r6, r7, pc}"); \
-}
-
-/**
- * @brief Performs a context switch between two threads.
- * @details This is the most critical code in any port, this function
- * is responsible for the context switch between 2 threads.
- * @note The implementation of this code affects <b>directly</b> the context
- * switch performance so optimize here as much as you can.
- *
- * @param[in] ntp the thread to be switched in
- * @param[in] otp the thread to be switched out
- */
-void port_switch(Thread *ntp, Thread *otp) {
-
- /* Stack overflow check, if enabled.*/
-#if CH_DBG_ENABLE_STACK_CHECK
- if ((void *)(r13 - 1) < (void *)(otp + 1))
- asm volatile ("movs r0, #0 \n\t"
- "b chDbgPanic");
-#endif /* CH_DBG_ENABLE_STACK_CHECK */
-
- PUSH_CONTEXT(r13);
-
- asm ("str sp, [r1, #12] \n\t"
- "ldr sp, [r0, #12]");
-
- POP_CONTEXT(r13);
-}
-
-/**
- * @brief Start a thread by invoking its work function.
- * @details If the work function returns @p chThdExit() is automatically
- * invoked.
- */
-void _port_thread_start(void) {
-
- port_unlock();
- asm ("mov r0, r5 \n\t"
- "blx r4 \n\t"
- "bl chThdExit");
-}
-
/** @} */
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