diff options
author | Nicolas Pitre <nico@cam.org> | 2005-11-04 17:15:43 +0000 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-04 17:15:43 +0000 |
commit | 73f0f7c79b046dc5d6b56a3f145430d97d50f877 (patch) | |
tree | 4ea8a6270a7b3be8dc14fee074a0bbfeb620dea8 /arch/arm | |
parent | 8b5f4f06eecc081892b05cd6077314d68872dfd6 (diff) | |
download | linux-73f0f7c79b046dc5d6b56a3f145430d97d50f877.tar.bz2 |
[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>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/lib/uaccess.S | 132 |
1 files changed, 16 insertions, 116 deletions
diff --git a/arch/arm/lib/uaccess.S b/arch/arm/lib/uaccess.S index c28449157bea..6f1b5b49fe4c 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 |