From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001
From: Kevin
Date: Sat, 15 Nov 2014 09:58:27 +0800
Subject: init android origin source code

---
 .../arch/arm/include/asm/entry-macro-multi.S       | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 ANDROID_3.4.5/arch/arm/include/asm/entry-macro-multi.S

(limited to 'ANDROID_3.4.5/arch/arm/include/asm/entry-macro-multi.S')

diff --git a/ANDROID_3.4.5/arch/arm/include/asm/entry-macro-multi.S b/ANDROID_3.4.5/arch/arm/include/asm/entry-macro-multi.S
new file mode 100644
index 00000000..88d61815
--- /dev/null
+++ b/ANDROID_3.4.5/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
+	mov     pc, r8
+	.endm
-- 
cgit