LXR linux/arch/arm/include/asm/entry-macro-multi.S

   1#include <asm/assembler.h>
   2
   3/*
   4 * Interrupt handling.  Preserves r7, r8, r9
   5 */
   6        .macro  arch_irq_handler_default
   7        get_irqnr_preamble r6, lr
   81:      get_irqnr_and_base r0, r2, r6, lr
   9        movne   r1, sp
  10        @
  11        @ routine called with r0 = irq number, r1 = struct pt_regs *
  12        @
  13        badrne  lr, 1b
  14        bne     asm_do_IRQ
  15
  16#ifdef CONFIG_SMP
  17        /*
  18         * XXX
  19         *
  20         * this macro assumes that irqstat (r2) and base (r6) are
  21         * preserved from get_irqnr_and_base above
  22         */
  23        ALT_SMP(test_for_ipi r0, r2, r6, lr)
  24        ALT_UP_B(9997f)
  25        movne   r1, sp
  26        badrne  lr, 1b
  27        bne     do_IPI
  28#endif
  299997:
  30        .endm
  31
  32        .macro  arch_irq_handler, symbol_name
  33        .align  5
  34        .global \symbol_name
  35\symbol_name:
  36        mov     r8, lr
  37        arch_irq_handler_default
  38        ret     r8
  39        .endm
  40