1 files changed, 106 insertions, 0 deletions
diff --git a/include/asm-arm26/assembler.h b/include/asm-arm26/assembler.h
new file mode 100644
index 000000000000..83f9aec55e4f
--- /dev/null
+++ b/include/asm-arm26/assembler.h
@@ -0,0 +1,106 @@
+/*
+ * linux/asm/assembler.h
+ *
+ * This file contains arm architecture specific defines
+ * for the different processors.
+ *
+ * Do not include any C declarations in this file - it is included by
+ * assembler source.
+ */
+#ifndef __ASSEMBLY__
+#error "Only include this from assembly code"
+#endif
+
+/*
+ * Endian independent macros for shifting bytes within registers.
+ */
+#define pull            lsr
+#define push            lsl
+#define byte(x)         (x*8)
+
+#ifdef __STDC__
+#define LOADREGS(cond, base, reglist...)\
+	ldm##cond	base,reglist^
+
+#define RETINSTR(instr, regs...)\
+	instr##s	regs
+#else
+#define LOADREGS(cond, base, reglist...)\
+	ldm/**/cond	base,reglist^
+
+#define RETINSTR(instr, regs...)\
+	instr/**/s	regs
+#endif
+
+#define MODENOP\
+	mov	r0, r0
+
+#define MODE(savereg,tmpreg,mode) \
+	mov	savereg, pc; \
+	bic	tmpreg, savereg, $0x0c000003; \
+	orr	tmpreg, tmpreg, $mode; \
+	teqp	tmpreg, $0
+
+#define RESTOREMODE(savereg) \
+	teqp	savereg, $0
+
+#define SAVEIRQS(tmpreg)
+
+#define RESTOREIRQS(tmpreg)
+
+#define DISABLEIRQS(tmpreg)\
+	teqp	pc, $0x08000003
+
+#define ENABLEIRQS(tmpreg)\
+	teqp	pc, $0x00000003
+
+#define USERMODE(tmpreg)\
+	teqp	pc, $0x00000000;\
+	mov	r0, r0
+
+#define SVCMODE(tmpreg)\
+	teqp	pc, $0x00000003;\
+	mov	r0, r0
+
+
+/*
+ * Save the current IRQ state and disable IRQs
+ * Note that this macro assumes FIQs are enabled, and
+ * that the processor is in SVC mode.
+ */
+	.macro	save_and_disable_irqs, oldcpsr, temp
+  mov \oldcpsr, pc
+  orr \temp, \oldcpsr, #0x08000000
+  teqp \temp, #0
+  .endm
+
+/*
+ * Restore interrupt state previously stored in
+ * a register
+ * ** Actually do nothing on Arc - hope that the caller uses a MOVS PC soon
+ * after!
+ */
+	.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 save lr (R14)
+ */
+	.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
+
+