[ARM] 3094/1: remove PLD stuff from old uaccess code

Patch from Nicolas Pitre

ARM processors that have pld instructions are not using those copy_user
implementation anymore.  Let's remove the useless PLD lines which were
half wrong anyway.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 16 insertions, 116 deletions

diff --git a/arch/arm/lib/uaccess.S b/arch/arm/lib/uaccess.S
index c28449157be..6f1b5b49fe4 100644
--- a/arch/arm/lib/uaccess.S
+++ b/arch/arm/lib/uaccess.S
@@ -43,8 +43,6 @@ ENTRY(__arch_copy_to_user)
 		stmfd	sp!, {r2, r4 - r7, lr}
 		cmp	r2, #4
 		blt	.c2u_not_enough
-	PLD(	pld	[r1, #0]		)
-	PLD(	pld	[r0, #0]		)
 		ands	ip, r0, #3
 		bne	.c2u_dest_not_aligned
 .c2u_dest_aligned:
@@ -73,25 +71,13 @@ USER(		strt	r3, [r0], #4)			@ May fault
 		sub	r2, r2, ip
 		subs	ip, ip, #32
 		blt	.c2u_0rem8lp
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-	PLD(	subs	ip, ip, #64			)
-	PLD(	blt	.c2u_0cpynopld		)
-	PLD(	pld	[r1, #60]		)
-	PLD(	pld	[r0, #60]		)
-
-.c2u_0cpy8lp:
-	PLD(	pld	[r1, #92]		)
-	PLD(	pld	[r0, #92]		)
-.c2u_0cpynopld:	ldmia	r1!, {r3 - r6}
+
+.c2u_0cpy8lp:	ldmia	r1!, {r3 - r6}
 		stmia	r0!, {r3 - r6}			@ Shouldnt fault
 		ldmia	r1!, {r3 - r6}
 		subs	ip, ip, #32
 		stmia	r0!, {r3 - r6}			@ Shouldnt fault
 		bpl	.c2u_0cpy8lp
-	PLD(	cmn	ip, #64			)
-	PLD(	bge	.c2u_0cpynopld		)
-	PLD(	add	ip, ip, #64		)
 
 .c2u_0rem8lp:	cmn	ip, #16
 		ldmgeia	r1!, {r3 - r6}
@@ -143,17 +129,8 @@ USER(		strt	r3, [r0], #4)			@ May fault
 		sub	r2, r2, ip
 		subs	ip, ip, #16
 		blt	.c2u_1rem8lp
-	PLD(	pld	[r1, #12]		)
-	PLD(	pld	[r0, #12]		)
-	PLD(	subs	ip, ip, #32		)
-	PLD(	blt	.c2u_1cpynopld		)
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-
-.c2u_1cpy8lp:
-	PLD(	pld	[r1, #44]		)
-	PLD(	pld	[r0, #44]		)
-.c2u_1cpynopld:	mov	r3, r7, pull #8
+
+.c2u_1cpy8lp:	mov	r3, r7, pull #8
 		ldmia	r1!, {r4 - r7}
 		subs	ip, ip, #16
 		orr	r3, r3, r4, push #24
@@ -165,9 +142,6 @@ USER(		strt	r3, [r0], #4)			@ May fault
 		orr	r6, r6, r7, push #24
 		stmia	r0!, {r3 - r6}			@ Shouldnt fault
 		bpl	.c2u_1cpy8lp
-	PLD(	cmn	ip, #32			)
-	PLD(	bge	.c2u_1cpynopld		)
-	PLD(	add	ip, ip, #32		)
 
 .c2u_1rem8lp:	tst	ip, #8
 		movne	r3, r7, pull #8
@@ -210,17 +184,8 @@ USER(		strt	r3, [r0], #4)			@ May fault
 		sub	r2, r2, ip
 		subs	ip, ip, #16
 		blt	.c2u_2rem8lp
-	PLD(	pld	[r1, #12]		)
-	PLD(	pld	[r0, #12]		)
-	PLD(	subs	ip, ip, #32		)
-	PLD(	blt	.c2u_2cpynopld		)
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-
-.c2u_2cpy8lp:
-	PLD(	pld	[r1, #44]		)
-	PLD(	pld	[r0, #44]		)
-.c2u_2cpynopld:	mov	r3, r7, pull #16
+
+.c2u_2cpy8lp:	mov	r3, r7, pull #16
 		ldmia	r1!, {r4 - r7}
 		subs	ip, ip, #16
 		orr	r3, r3, r4, push #16
@@ -232,9 +197,6 @@ USER(		strt	r3, [r0], #4)			@ May fault
 		orr	r6, r6, r7, push #16
 		stmia	r0!, {r3 - r6}			@ Shouldnt fault
 		bpl	.c2u_2cpy8lp
-	PLD(	cmn	ip, #32			)
-	PLD(	bge	.c2u_2cpynopld		)
-	PLD(	add	ip, ip, #32		)
 
 .c2u_2rem8lp:	tst	ip, #8
 		movne	r3, r7, pull #16
@@ -277,17 +239,8 @@ USER(		strt	r3, [r0], #4)			@ May fault
 		sub	r2, r2, ip
 		subs	ip, ip, #16
 		blt	.c2u_3rem8lp
-	PLD(	pld	[r1, #12]		)
-	PLD(	pld	[r0, #12]		)
-	PLD(	subs	ip, ip, #32		)
-	PLD(	blt	.c2u_3cpynopld		)
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-
-.c2u_3cpy8lp:
-	PLD(	pld	[r1, #44]		)
-	PLD(	pld	[r0, #44]		)
-.c2u_3cpynopld:	mov	r3, r7, pull #24
+
+.c2u_3cpy8lp:	mov	r3, r7, pull #24
 		ldmia	r1!, {r4 - r7}
 		subs	ip, ip, #16
 		orr	r3, r3, r4, push #8
@@ -299,9 +252,6 @@ USER(		strt	r3, [r0], #4)			@ May fault
 		orr	r6, r6, r7, push #8
 		stmia	r0!, {r3 - r6}			@ Shouldnt fault
 		bpl	.c2u_3cpy8lp
-	PLD(	cmn	ip, #32			)
-	PLD(	bge	.c2u_3cpynopld		)
-	PLD(	add	ip, ip, #32		)
 
 .c2u_3rem8lp:	tst	ip, #8
 		movne	r3, r7, pull #24
@@ -356,8 +306,6 @@ ENTRY(__arch_copy_from_user)
 		stmfd	sp!, {r0, r2, r4 - r7, lr}
 		cmp	r2, #4
 		blt	.cfu_not_enough
-	PLD(	pld	[r1, #0]		)
-	PLD(	pld	[r0, #0]		)
 		ands	ip, r0, #3
 		bne	.cfu_dest_not_aligned
 .cfu_dest_aligned:
@@ -385,25 +333,13 @@ USER(		ldrt	r3, [r1], #4)
 		sub	r2, r2, ip
 		subs	ip, ip, #32
 		blt	.cfu_0rem8lp
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-	PLD(	subs	ip, ip, #64			)
-	PLD(	blt	.cfu_0cpynopld		)
-	PLD(	pld	[r1, #60]		)
-	PLD(	pld	[r0, #60]		)
-
-.cfu_0cpy8lp:
-	PLD(	pld	[r1, #92]		)
-	PLD(	pld	[r0, #92]		)
-.cfu_0cpynopld:	ldmia	r1!, {r3 - r6}			@ Shouldnt fault
+
+.cfu_0cpy8lp:	ldmia	r1!, {r3 - r6}			@ Shouldnt fault
 		stmia	r0!, {r3 - r6}
 		ldmia	r1!, {r3 - r6}			@ Shouldnt fault
 		subs	ip, ip, #32
 		stmia	r0!, {r3 - r6}
 		bpl	.cfu_0cpy8lp
-	PLD(	cmn	ip, #64			)
-	PLD(	bge	.cfu_0cpynopld		)
-	PLD(	add	ip, ip, #64		)
 
 .cfu_0rem8lp:	cmn	ip, #16
 		ldmgeia	r1!, {r3 - r6}			@ Shouldnt fault
@@ -456,17 +392,8 @@ USER(		ldrt	r7, [r1], #4)			@ May fault
 		sub	r2, r2, ip
 		subs	ip, ip, #16
 		blt	.cfu_1rem8lp
-	PLD(	pld	[r1, #12]		)
-	PLD(	pld	[r0, #12]		)
-	PLD(	subs	ip, ip, #32		)
-	PLD(	blt	.cfu_1cpynopld		)
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-
-.cfu_1cpy8lp:
-	PLD(	pld	[r1, #44]		)
-	PLD(	pld	[r0, #44]		)
-.cfu_1cpynopld:	mov	r3, r7, pull #8
+
+.cfu_1cpy8lp:	mov	r3, r7, pull #8
 		ldmia	r1!, {r4 - r7}			@ Shouldnt fault
 		subs	ip, ip, #16
 		orr	r3, r3, r4, push #24
@@ -478,9 +405,6 @@ USER(		ldrt	r7, [r1], #4)			@ May fault
 		orr	r6, r6, r7, push #24
 		stmia	r0!, {r3 - r6}
 		bpl	.cfu_1cpy8lp
-	PLD(	cmn	ip, #32			)
-	PLD(	bge	.cfu_1cpynopld		)
-	PLD(	add	ip, ip, #32		)
 
 .cfu_1rem8lp:	tst	ip, #8
 		movne	r3, r7, pull #8
@@ -523,17 +447,8 @@ USER(		ldrt	r7, [r1], #4)			@ May fault
 		sub	r2, r2, ip
 		subs	ip, ip, #16
 		blt	.cfu_2rem8lp
-	PLD(	pld	[r1, #12]		)
-	PLD(	pld	[r0, #12]		)
-	PLD(	subs	ip, ip, #32		)
-	PLD(	blt	.cfu_2cpynopld		)
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-
-.cfu_2cpy8lp:
-	PLD(	pld	[r1, #44]		)
-	PLD(	pld	[r0, #44]		)
-.cfu_2cpynopld:	mov	r3, r7, pull #16
+
+.cfu_2cpy8lp:	mov	r3, r7, pull #16
 		ldmia	r1!, {r4 - r7}			@ Shouldnt fault
 		subs	ip, ip, #16
 		orr	r3, r3, r4, push #16
@@ -545,9 +460,6 @@ USER(		ldrt	r7, [r1], #4)			@ May fault
 		orr	r6, r6, r7, push #16
 		stmia	r0!, {r3 - r6}
 		bpl	.cfu_2cpy8lp
-	PLD(	cmn	ip, #32			)
-	PLD(	bge	.cfu_2cpynopld		)
-	PLD(	add	ip, ip, #32		)
 
 .cfu_2rem8lp:	tst	ip, #8
 		movne	r3, r7, pull #16
@@ -590,17 +502,8 @@ USER(		ldrt	r7, [r1], #4)			@ May fault
 		sub	r2, r2, ip
 		subs	ip, ip, #16
 		blt	.cfu_3rem8lp
-	PLD(	pld	[r1, #12]		)
-	PLD(	pld	[r0, #12]		)
-	PLD(	subs	ip, ip, #32		)
-	PLD(	blt	.cfu_3cpynopld		)
-	PLD(	pld	[r1, #28]		)
-	PLD(	pld	[r0, #28]		)
-
-.cfu_3cpy8lp:
-	PLD(	pld	[r1, #44]		)
-	PLD(	pld	[r0, #44]		)
-.cfu_3cpynopld:	mov	r3, r7, pull #24
+
+.cfu_3cpy8lp:	mov	r3, r7, pull #24
 		ldmia	r1!, {r4 - r7}			@ Shouldnt fault
 		orr	r3, r3, r4, push #8
 		mov	r4, r4, pull #24
@@ -612,9 +515,6 @@ USER(		ldrt	r7, [r1], #4)			@ May fault
 		stmia	r0!, {r3 - r6}
 		subs	ip, ip, #16
 		bpl	.cfu_3cpy8lp
-	PLD(	cmn	ip, #32			)
-	PLD(	bge	.cfu_3cpynopld		)
-	PLD(	add	ip, ip, #32		)
 
 .cfu_3rem8lp:	tst	ip, #8
 		movne	r3, r7, pull #24