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asm
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entry-macro-multi.S

entry-macro-multi.S 797 B
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  1. /*
    2. 

  2.  * Interrupt handling.  Preserves r7, r8, r9
    3. 

  3.  */
    4. 

  4. 	.macro	arch_irq_handler_default
    5. 

  5. 	get_irqnr_preamble r5, lr
    6. 

  6. 1:	get_irqnr_and_base r0, r6, r5, lr
    7. 

  7. 	movne	r1, sp
    8. 

  8. 	@
    9. 

  9. 	@ routine called with r0 = irq number, r1 = struct pt_regs *
    10. 

  10. 	@
    11. 

  11. 	adrne	lr, BSYM(1b)
    12. 

  12. 	bne	asm_do_IRQ
    13. 

  13. 

  14. #ifdef CONFIG_SMP
    15. 

  15. 	/*
    16. 

  16. 	 * XXX
    17. 

  17. 	 *
    18. 

  18. 	 * this macro assumes that irqstat (r6) and base (r5) are
    19. 

  19. 	 * preserved from get_irqnr_and_base above
    20. 

  20. 	 */
    21. 

  21. 	ALT_SMP(test_for_ipi r0, r6, r5, lr)
    22. 

  22. 	ALT_UP_B(9997f)
    23. 

  23. 	movne	r1, sp
    24. 

  24. 	adrne	lr, BSYM(1b)
    25. 

  25. 	bne	do_IPI
    26. 

  26. 

  27. #ifdef CONFIG_LOCAL_TIMERS
    28. 

  28. 	test_for_ltirq r0, r6, r5, lr
    29. 

  29. 	movne	r0, sp
    30. 

  30. 	adrne	lr, BSYM(1b)
    31. 

  31. 	bne	do_local_timer
    32. 

  32. #endif
    33. 

  33. #endif
    34. 

  34. 9997:
    35. 

  35. 	.endm
    36. 

  36. 

  37. 	.macro	arch_irq_handler, symbol_name
    38. 

  38. 	.align	5
    39. 

  39. 	.global \symbol_name
    40. 

  40. \symbol_name:
    41. 

  41. 	mov	r4, lr
    42. 

  42. 	arch_irq_handler_default
    43. 

  43. 	mov     pc, r4
    44. 

  44. 	.endm
    45.