diff options
Diffstat (limited to 'nuttx/arch/z80/src/z8/switch.h')
| -rw-r--r-- | nuttx/arch/z80/src/z8/switch.h | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/nuttx/arch/z80/src/z8/switch.h b/nuttx/arch/z80/src/z8/switch.h index 45089947c..17f15b6da 100644 --- a/nuttx/arch/z80/src/z8/switch.h +++ b/nuttx/arch/z80/src/z8/switch.h @@ -112,7 +112,14 @@ #define IN_INTERRUPT() \ (g_z8irqstate.state != Z8_IRQSTATE_NONE) -/* The following macro is used when the system enters interrupt handling logic */ +/* The following macro is used when the system enters interrupt handling logic + * + * NOTE: Nested interrupts are not supported in this implementation. If you want + * to implement nested interrupts, you would have to change the way that + * current_regs is handled. The savestate variable would not work for + * that purpose as implemented here because only the outermost nested + * interrupt can result in a context switch (it can probably be deleted). + */ #define DECL_SAVESTATE() \ struct z8_irqstate_s savestate @@ -216,37 +223,34 @@ extern struct z8_irqstate_s g_z8irqstate; #ifndef __ASSEMBLY__ #ifdef __cplusplus -#define EXTERN extern "C" -extern "C" { -#else -#define EXTERN extern +extern "C" +{ #endif /* Defined in z8_irq.c */ -EXTERN void up_maskack_irq(int irq); +void up_maskack_irq(int irq); /* Defined in z8_saveusercontext.asm */ -EXTERN int z8_saveusercontext(FAR chipreg_t *regs); +int z8_saveusercontext(FAR chipreg_t *regs); /* Defined in z8_saveirqcontext.c */ -EXTERN void z8_saveirqcontext(FAR chipreg_t *regs); +void z8_saveirqcontext(FAR chipreg_t *regs); /* Defined in z8_restorecontext.asm */ -EXTERN void z8_restorecontext(FAR chipreg_t *regs); +void z8_restorecontext(FAR chipreg_t *regs); /* Defined in z8_sigsetup.c */ -EXTERN void z8_sigsetup(FAR _TCB *tcb, sig_deliver_t sigdeliver, FAR chipreg_t *regs); +void z8_sigsetup(FAR _TCB *tcb, sig_deliver_t sigdeliver, FAR chipreg_t *regs); /* Defined in z8_registerdump.c */ -EXTERN void z8_registerdump(void); +void z8_registerdump(void); -#undef EXTERN #ifdef __cplusplus } #endif |