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Commit 405040a7 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[ARM] Remove save_lr/restore_pc macros 



As for RETINSTR/LOADREGS macros, these were for compatibility
with 26-bit ARMs.  No longer required, so remove them.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 800d8b5c

arch/arm/lib/strncpy_from_user.S

+2 −3
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ 
 *  -EFAULT on exception, or "len" if we fill the whole buffer

 */

ENTRY(__arch_strncpy_from_user)

	save_lr

	mov	ip, r1

1:	subs	r2, r2, #1

USER(	ldrplbt	r3, [r1], #1)
@@ -31,13 +30,13 @@ USER( ldrplbt r3, [r1], #1) 
	bne	1b

	sub	r1, r1, #1	@ take NUL character out of count

2:	sub	r0, r1, ip

	restore_pc

	mov	pc, lr



	.section .fixup,"ax"

	.align	0

9001:	mov	r3, #0

	strb	r3, [r0, #0]	@ null terminate

	mov	r0, #-EFAULT

	restore_pc

	mov	pc, lr

	.previous

arch/arm/lib/strnlen_user.S

+2 −3
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ 
 *	      or zero on exception, or n + 1 if too long

 */

ENTRY(__arch_strnlen_user)

	save_lr

	mov	r2, r0

1:

USER(	ldrbt	r3, [r0], #1)
@@ -31,10 +30,10 @@ USER( ldrbt r3, [r0], #1) 
	bne	1b

	add	r0, r0, #1

2:	sub	r0, r0, r2

	restore_pc

	mov	pc, lr



	.section .fixup,"ax"

	.align	0

9001:	mov	r0, #0

	restore_pc

	mov	pc, lr

	.previous

include/asm-arm/assembler.h

+0 −12
Original line number Diff line number Diff line
@@ -100,18 +100,6 @@ 
	msr	cpsr_c, \oldcpsr

	.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

	.endm



	.macro	restore_pc

	mov	pc, lr

	.endm



#define USER(x...)				\

9999:	x;					\

	.section __ex_table,"a";		\