kandryte k210的SDK中断处理程序
代码片段
#define IRQ_M_SOFT 3
#define IRQ_M_TIMER 7
#define IRQ_M_EXT 11
typedef unsigned long int uintptr_t;
uintptr_t __attribute__((weak))
handle_irq(uintptr_t cause, uintptr_t epc, uintptr_t regs[32], uintptr_t fregs[32])
{
#if defined(__GNUC__)
#pragma GCC diagnostic ignored "-Woverride-init"
#endif
/* clang-format off */
static uintptr_t (* const irq_table[])(
uintptr_t cause,
uintptr_t epc,
uintptr_t regs[32],
uintptr_t fregs[32]) =
{
[0 ... 14] = handle_irq_dummy,
[IRQ_M_SOFT] = handle_irq_m_soft,
[IRQ_M_TIMER] = handle_irq_m_timer,
[IRQ_M_EXT] = handle_irq_m_ext,
};
/* clang-format on */
#if defined(__GNUC__)
#pragma GCC diagnostic warning "-Woverride-init"
#endif
return irq_table[cause & CAUSE_MACHINE_IRQ_REASON_MASK](cause, epc, regs, fregs);
}
问题
=后面的是函数指针,这段代码那些方括号是啥意思,
{
[0 ... 14] = handle_irq_dummy,
[IRQ_M_SOFT] = handle_irq_m_soft,
[IRQ_M_TIMER] = handle_irq_m_timer,
[IRQ_M_EXT] = handle_irq_m_ext,
};