tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 r5, lr
81: get_irqnr_and_base r0, r6, r5, lr
9 movne r1, sp
10 @
11 @ routine called with r0 = irq number, r1 = struct pt_regs *
12 @
13 adrne lr, BSYM(1b)
14 bne asm_do_IRQ
15
16#ifdef CONFIG_SMP
17 /*
18 * XXX
19 *
20 * this macro assumes that irqstat (r6) and base (r5) are
21 * preserved from get_irqnr_and_base above
22 */
23 ALT_SMP(test_for_ipi r0, r6, r5, lr)
24 ALT_UP_B(9997f)
25 movne r1, sp
26 adrne lr, BSYM(1b)
27 bne do_IPI
28
29#ifdef CONFIG_LOCAL_TIMERS
30 test_for_ltirq r0, r6, r5, lr
31 movne r0, sp
32 adrne lr, BSYM(1b)
33 bne do_local_timer
34#endif
35#endif
369997:
37 .endm
38
39 .macro arch_irq_handler, symbol_name
40 .align 5
41 .global \symbol_name
42\symbol_name:
43 mov r4, lr
44 arch_irq_handler_default
45 mov pc, r4
46 .endm