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Worked around GCC-AVR strange behavior in AVR port. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10023 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
Giovanni Di Sirio 2017-01-11 09:52:53 +00:00
parent ffea5d743b
commit 163b3562c0
2 changed files with 18 additions and 2 deletions
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2
os/common/ports/AVR/chcore.c
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@ -69,7 +69,7 @@ bool __avr_in_isr;
#if !defined(__DOXYGEN__)
__attribute__((naked, weak))
#endif
void port_switch(thread_t *ntp, thread_t *otp) {
void _port_switch(thread_t *ntp, thread_t *otp) {
asm volatile ("push r2");
asm volatile ("push r3");

18
os/common/ports/AVR/chcore.h
View File

@ -340,6 +340,22 @@ struct port_context {
*/
#define PORT_FAST_IRQ_HANDLER(id) ISR(id)
/**
* @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
*/
#define port_switch(ntp, otp) { \
_port_switch(ntp, otp); \
asm volatile ("" : : : "memory"); \
}
/**
* @brief Port-related initialization code.
* @note This function is empty in this port.
@ -359,7 +375,7 @@ struct port_context {
#ifdef __cplusplus
extern "C" {
#endif
void port_switch(thread_t *ntp, thread_t *otp);
void _port_switch(thread_t *ntp, thread_t *otp);
void _port_thread_start(void);
#ifdef __cplusplus
}