patch-2.4.0-test8 linux/include/asm-arm/proc-armo/assembler.h

• Lines: 26
• Date: Sun Sep 3 11:19:11 2000
• Orig file: v2.4.0-test7/linux/include/asm-arm/proc-armo/assembler.h
• Orig date: Wed Aug 23 18:36:39 2000

diff -u --recursive --new-file v2.4.0-test7/linux/include/asm-arm/proc-armo/assembler.h linux/include/asm-arm/proc-armo/assembler.h
@@ -78,3 +78,25 @@
 	.macro	restore_irqs, oldcpsr
   @ This be restore_irqs
   .endm
+
+/*
+ * These two are used to save LR/restore PC over a user-based access.
+ * The old 26-bit architecture requires that we do.  On 32-bit
+ * architecture, we can safely ignore this requirement.
+ */
+	.macro	save_lr
+	str	lr, [sp, #-4]!
+	.endm
+
+	.macro	restore_pc
+	ldmfd	sp!, {pc}^
+	.endm
+
+#define USER(x...)				\
+9999:	x;					\
+	.section __ex_table,"a";		\
+	.align	3;				\
+	.long	9999b,9001f;			\
+	.previous
+
+