Commit cd544ce7 authored by Magnus Damm's avatar Magnus Damm Committed by Russell King
Browse files

ARM: 6538/1: Subarch IRQ handler macros V3 



Per subarch interrupt handler macros V3.

This patch breaks out code from the irq_handler macro
into arch_irq_handler and arch_irq_handler_default.

The macros are put in the header file "entry-macro-multi.S"

The arch_irq_handler_default macro is designed to be
used by irq_handler in entry-armv.S while arch_irq_handler
is suitable for per-subarch use.

Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 52108641

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

0 → 100644
+44 −0
Original line number Diff line number Diff line 
/*

 * Interrupt handling.  Preserves r7, r8, r9

 */

	.macro	arch_irq_handler_default

	get_irqnr_preamble r5, lr

1:	get_irqnr_and_base r0, r6, r5, lr

	movne	r1, sp

	@

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

	@

	adrne	lr, BSYM(1b)

	bne	asm_do_IRQ



#ifdef CONFIG_SMP

	/*

	 * XXX

	 *

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

	 * preserved from get_irqnr_and_base above

	 */

	ALT_SMP(test_for_ipi r0, r6, r5, lr)

	ALT_UP_B(9997f)

	movne	r0, sp

	adrne	lr, BSYM(1b)

	bne	do_IPI



#ifdef CONFIG_LOCAL_TIMERS

	test_for_ltirq r0, r6, r5, lr

	movne	r0, sp

	adrne	lr, BSYM(1b)

	bne	do_local_timer

#endif

#endif

9997:

	.endm



	.macro	arch_irq_handler, symbol_name

	.align	5

	.global \symbol_name

\symbol_name:

	mov	r4, lr

	arch_irq_handler_default

	mov     pc, r4

	.endm

arch/arm/kernel/entry-armv.S

+2 −29
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <asm/tls.h>



#include "entry-header.S"

#include <asm/entry-macro-multi.S>



/*

 * Interrupt handling.  Preserves r7, r8, r9
@@ -38,35 +39,7 @@ 
	teq	r5, #0

	movne	pc, r5

#endif

	get_irqnr_preamble r5, lr

1:	get_irqnr_and_base r0, r6, r5, lr

	movne	r1, sp

	@

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

	@

	adrne	lr, BSYM(1b)

	bne	asm_do_IRQ



#ifdef CONFIG_SMP

	/*

	 * XXX

	 *

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

	 * preserved from get_irqnr_and_base above

	 */

	ALT_SMP(test_for_ipi r0, r6, r5, lr)

	ALT_UP_B(9997f)

	movne	r0, sp

	adrne	lr, BSYM(1b)

	bne	do_IPI



#ifdef CONFIG_LOCAL_TIMERS

	test_for_ltirq r0, r6, r5, lr

	movne	r0, sp

	adrne	lr, BSYM(1b)

	bne	do_local_timer

#endif

#endif

	arch_irq_handler_default

9997:

	.endm

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