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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/arm/include/asm/entry-macro-multi.S
Initial import
Diffstat (limited to 'arch/arm/include/asm/entry-macro-multi.S')
-rw-r--r--arch/arm/include/asm/entry-macro-multi.S39
1 files changed, 39 insertions, 0 deletions
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 000000000..469a2b30f
--- /dev/null
+++ b/arch/arm/include/asm/entry-macro-multi.S
@@ -0,0 +1,39 @@
+#include <asm/assembler.h>
+
+/*
+ * Interrupt handling. Preserves r7, r8, r9
+ */
+ .macro arch_irq_handler_default
+ get_irqnr_preamble r6, lr
+1: get_irqnr_and_base r0, r2, r6, 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 (r2) and base (r6) are
+ * preserved from get_irqnr_and_base above
+ */
+ ALT_SMP(test_for_ipi r0, r2, r6, lr)
+ ALT_UP_B(9997f)
+ movne r1, sp
+ adrne lr, BSYM(1b)
+ bne do_IPI
+#endif
+9997:
+ .endm
+
+ .macro arch_irq_handler, symbol_name
+ .align 5
+ .global \symbol_name
+\symbol_name:
+ mov r8, lr
+ arch_irq_handler_default
+ ret r8
+ .endm