usbisr.s

s3c44b0 基于EMBESTED USB 试验

        .EXTERN  Eint1isr
        .GLOBAL  __Eint1Isr

__Eint1Isr:
        stmdb   sp!, {r0-r11, ip, lr} /* 保存r0-r11, ip, lr */
        ldr     r0, = Eint1Isr
        mov     lr, pc
        bx      r0                         /* 调用C语言中断处理程序 */
        ldmia   sp!, {r0-r11, ip, lr} /* 恢复r0, ip, lr */
        subs    pc, r14, #4      /* 中断返回 */