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#pragma once
#include <stdint.h>
/** Reference to the global ISR vector. */
extern char isr_vector;
/** Default IRQ handler. This is weakly defined and can be overridden. */
void default_irq_handler(void);
/** Weakly defined interrput service routine vectors. These just alias to
* default_irq_handler if not overridden. */
void irq_on_reset(void);
void irq_on_nmi(void);
void irq_on_exc(void);
void irq_on_systick(void);
void irq_on_swi(void);
void irq_on_tmr0(void);
void irq_on_gpio_a(void);
void irq_on_gpio_b(void);
void irq_on_spi0(void);
void irq_on_blel(void);
void irq_on_bleb(void);
void irq_on_usb(void);
void irq_on_tmr1(void);
void irq_on_tmr2(void);
void irq_on_uart0(void);
void irq_on_uart1(void);
void irq_on_rtc(void);
void irq_on_adc(void);
void irq_on_pwmx(void);
void irq_on_tmr3(void);
void irq_on_uart2(void);
void irq_on_uart3(void);
void irq_on_wdog_bat(void);
/*
* Macro to define an interrput service routine.
*/
#define IRQ(name) \
/* Real interrupt service routine. This contains most of the code to handle \
* the interrupt. */ \
static void __attribute__((noinline)) _real__irq_on_##name(void); \
/* The actual routine that's jumped to. It's soley responsible for jumping \
* to the real handler (which requires multiple instructions because it's a \
* long jump). This stub is compiled and linked promimal to the ISR vector. \
*/ \
void __attribute__((interrupt)) \
__attribute__((__section__(".isr_vector.routines"))) irq_on_##name(void) \
{ \
_real__irq_on_##name(); \
} \
static void __attribute__((noinline)) _real__irq_on_##name(void)
inline static void enable_interrupts()
{
int mstatus;
asm volatile ("csrr %0, mstatus" : "=r"(mstatus));
mstatus |= 0x88;
asm volatile ("csrw mstatus, %0" : : "r"(mstatus));
}
inline static void disable_interrupts()
{
int mstatus;
asm volatile ("csrr %0, mstatus" : "=r"(mstatus));
mstatus &= ~0x88;
asm volatile ("csrw mstatus, %0" : : "r"(mstatus));
}
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