cd544ce754
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: Magnus Damm <damm@opensource.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
44 lines
797 B
ArmAsm
44 lines
797 B
ArmAsm
/*
|
|
* 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
|