diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-02-26 13:43:07 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-02-26 13:43:07 +0000 |
| commit | 1d00697fe4f8bbe42e0c0d59f76879bd1e575883 (patch) | |
| tree | 074f1eff033ab92d0ef21b3b49526e223e4f6cfa /os/ports/RVCT/ARMCMx | |
| parent | a7ce64bb324a4d56808a806070de42adbef9a215 (diff) | |
| download | ChibiOS-1d00697fe4f8bbe42e0c0d59f76879bd1e575883.tar.gz ChibiOS-1d00697fe4f8bbe42e0c0d59f76879bd1e575883.tar.bz2 ChibiOS-1d00697fe4f8bbe42e0c0d59f76879bd1e575883.zip | |
Fixed bug 3193062 (RVCT).
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2766 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/ports/RVCT/ARMCMx')
| -rw-r--r-- | os/ports/RVCT/ARMCMx/chcore_v6m.h | 12 | ||||
| -rw-r--r-- | os/ports/RVCT/ARMCMx/chcoreasm_v6m.s | 33 |
2 files changed, 17 insertions, 28 deletions
diff --git a/os/ports/RVCT/ARMCMx/chcore_v6m.h b/os/ports/RVCT/ARMCMx/chcore_v6m.h index 796b7f22e..59d5b6af0 100644 --- a/os/ports/RVCT/ARMCMx/chcore_v6m.h +++ b/os/ports/RVCT/ARMCMx/chcore_v6m.h @@ -118,18 +118,14 @@ struct intctx { * @details This macro must be inserted at the start of all IRQ handlers
* enabled to invoke system APIs.
*/
-#define PORT_IRQ_PROLOGUE() { \
- port_lock_from_isr(); \
- _port_irq_nesting++; \
- port_unlock_from_isr(); \
-}
+#define PORT_IRQ_PROLOGUE() regarm_t _saved_lr = (regarm_t)__return_address()
/**
* @brief IRQ epilogue code.
* @details This macro must be inserted at the end of all IRQ handlers
* enabled to invoke system APIs.
*/
-#define PORT_IRQ_EPILOGUE() _port_irq_epilogue()
+#define PORT_IRQ_EPILOGUE() _port_irq_epilogue(_saved_lr)
/**
* @brief IRQ handler function declaration.
@@ -149,7 +145,6 @@ struct intctx { * @brief Port-related initialization code.
*/
#define port_init() { \
- _port_irq_nesting = 0; \
SCB_AIRCR = AIRCR_VECTKEY | AIRCR_PRIGROUP(0); \
NVICSetSystemHandlerPriority(HANDLER_SYSTICK, \
CORTEX_PRIORITY_MASK(CORTEX_PRIORITY_SYSTICK)); \
@@ -230,7 +225,6 @@ struct intctx { #if !defined(__DOXYGEN__)
extern regarm_t _port_saved_pc;
-extern unsigned _port_irq_nesting;
#endif
#ifdef __cplusplus
@@ -238,7 +232,7 @@ extern "C" { #endif
void port_halt(void);
void _port_switch(Thread *ntp, Thread *otp);
- void _port_irq_epilogue(void);
+ void _port_irq_epilogue(regarm_t lr);
void _port_switch_from_isr(void);
void _port_thread_start(void);
#ifdef __cplusplus
diff --git a/os/ports/RVCT/ARMCMx/chcoreasm_v6m.s b/os/ports/RVCT/ARMCMx/chcoreasm_v6m.s index 2424de03f..a789e4a0e 100644 --- a/os/ports/RVCT/ARMCMx/chcoreasm_v6m.s +++ b/os/ports/RVCT/ARMCMx/chcoreasm_v6m.s @@ -103,29 +103,24 @@ _port_switch_from_isr PROC */
EXPORT _port_irq_epilogue
_port_irq_epilogue PROC
- push {r4, lr}
+ push {r3, lr}
+ adds r0, r0, #15
+ beq stillnested
cpsid i
- ldr r2, =_port_irq_nesting
- ldr r3, [r2]
- subs r3, r3, #1
- str r3, [r2]
- cmp r3, #0
- beq skipexit
-notrequired
- cpsie i
- pop {r4, pc}
-skipexit
bl chSchIsRescRequiredExI
cmp r0, #0
- beq notrequired
- mrs r1, PSP
+ bne doresch
+ cpsie i
+stillnested
+ pop {r3, pc}
+doresch
+ mrs r3, PSP
ldr r2, =_port_saved_pc
- ldr r3, [r1, #24]
- str r3, [r2]
- ldr r3, =_port_switch_from_isr
- str r3, [r1, #24]
- pop {r4, pc}
- nop
+ ldr r1, [r3, #24]
+ str r1, [r2]
+ ldr r2, =_port_switch_from_isr
+ str r2, [r3, #24]
+ pop {r3, pc}
ENDP
END
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