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: Magnus Damm <damm@opensource.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/include/asm/entry-macro-multi.S b/arch/arm/include/asm/entry-macro-multi.S
new file mode 100644
index 0000000..44f21d4
--- /dev/null
+++ b/arch/arm/include/asm/entry-macro-multi.S
@@ -0,0 +1,44 @@
+/*
+ * 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
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index caa6c39..a866dce 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -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