* Returns : Number of bytes NOT copied.
*/
-.c2u_dest_not_aligned:
+.Lc2u_dest_not_aligned:
rsb ip, ip, #4
cmp ip, #2
ldrb r3, [r1], #1
ldrgtb r3, [r1], #1
USER( strgtbt r3, [r0], #1) @ May fault
sub r2, r2, ip
- b .c2u_dest_aligned
+ b .Lc2u_dest_aligned
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] )
+ blt .Lc2u_not_enough
ands ip, r0, #3
- bne .c2u_dest_not_aligned
-.c2u_dest_aligned:
+ bne .Lc2u_dest_not_aligned
+.Lc2u_dest_aligned:
ands ip, r1, #3
- bne .c2u_src_not_aligned
+ bne .Lc2u_src_not_aligned
/*
* Seeing as there has to be at least 8 bytes to copy, we can
* copy one word, and force a user-mode page fault...
*/
-.c2u_0fupi: subs r2, r2, #4
+.Lc2u_0fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .c2u_0nowords
+ bmi .Lc2u_0nowords
ldr r3, [r1], #4
USER( strt r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .c2u_0fupi
+ beq .Lc2u_0fupi
/*
* ip = max no. of bytes to copy before needing another "strt" insn
*/
movlt ip, r2
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}
+ blt .Lc2u_0rem8lp
+
+.Lc2u_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 )
+ bpl .Lc2u_0cpy8lp
-.c2u_0rem8lp: cmn ip, #16
+.Lc2u_0rem8lp: cmn ip, #16
ldmgeia r1!, {r3 - r6}
stmgeia r0!, {r3 - r6} @ Shouldnt fault
tst ip, #8
ldrne r3, [r1], #4
strnet r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
- beq .c2u_0fupi
-.c2u_0nowords: teq ip, #0
- beq .c2u_finished
-.c2u_nowords: cmp ip, #2
+ beq .Lc2u_0fupi
+.Lc2u_0nowords: teq ip, #0
+ beq .Lc2u_finished
+.Lc2u_nowords: cmp ip, #2
ldrb r3, [r1], #1
USER( strbt r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
USER( strgebt r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #1
USER( strgtbt r3, [r0], #1) @ May fault
- b .c2u_finished
+ b .Lc2u_finished
-.c2u_not_enough:
+.Lc2u_not_enough:
movs ip, r2
- bne .c2u_nowords
-.c2u_finished: mov r0, #0
+ bne .Lc2u_nowords
+.Lc2u_finished: mov r0, #0
LOADREGS(fd,sp!,{r2, r4 - r7, pc})
-.c2u_src_not_aligned:
+.Lc2u_src_not_aligned:
bic r1, r1, #3
ldr r7, [r1], #4
cmp ip, #2
- bgt .c2u_3fupi
- beq .c2u_2fupi
-.c2u_1fupi: subs r2, r2, #4
+ bgt .Lc2u_3fupi
+ beq .Lc2u_2fupi
+.Lc2u_1fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .c2u_1nowords
+ bmi .Lc2u_1nowords
mov r3, r7, pull #8
ldr r7, [r1], #4
orr r3, r3, r7, push #24
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .c2u_1fupi
+ beq .Lc2u_1fupi
cmp r2, ip
movlt ip, r2
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
+ blt .Lc2u_1rem8lp
+
+.Lc2u_1cpy8lp: mov r3, r7, pull #8
ldmia r1!, {r4 - r7}
subs ip, ip, #16
orr r3, r3, r4, push #24
mov r6, r6, pull #8
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 )
+ bpl .Lc2u_1cpy8lp
-.c2u_1rem8lp: tst ip, #8
+.Lc2u_1rem8lp: tst ip, #8
movne r3, r7, pull #8
ldmneia r1!, {r4, r7}
orrne r3, r3, r4, push #24
orrne r3, r3, r7, push #24
strnet r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
- beq .c2u_1fupi
-.c2u_1nowords: mov r3, r7, get_byte_1
+ beq .Lc2u_1fupi
+.Lc2u_1nowords: mov r3, r7, get_byte_1
teq ip, #0
- beq .c2u_finished
+ beq .Lc2u_finished
cmp ip, #2
USER( strbt r3, [r0], #1) @ May fault
movge r3, r7, get_byte_2
USER( strgebt r3, [r0], #1) @ May fault
movgt r3, r7, get_byte_3
USER( strgtbt r3, [r0], #1) @ May fault
- b .c2u_finished
+ b .Lc2u_finished
-.c2u_2fupi: subs r2, r2, #4
+.Lc2u_2fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .c2u_2nowords
+ bmi .Lc2u_2nowords
mov r3, r7, pull #16
ldr r7, [r1], #4
orr r3, r3, r7, push #16
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .c2u_2fupi
+ beq .Lc2u_2fupi
cmp r2, ip
movlt ip, r2
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
+ blt .Lc2u_2rem8lp
+
+.Lc2u_2cpy8lp: mov r3, r7, pull #16
ldmia r1!, {r4 - r7}
subs ip, ip, #16
orr r3, r3, r4, push #16
mov r6, r6, pull #16
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 )
+ bpl .Lc2u_2cpy8lp
-.c2u_2rem8lp: tst ip, #8
+.Lc2u_2rem8lp: tst ip, #8
movne r3, r7, pull #16
ldmneia r1!, {r4, r7}
orrne r3, r3, r4, push #16
orrne r3, r3, r7, push #16
strnet r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
- beq .c2u_2fupi
-.c2u_2nowords: mov r3, r7, get_byte_2
+ beq .Lc2u_2fupi
+.Lc2u_2nowords: mov r3, r7, get_byte_2
teq ip, #0
- beq .c2u_finished
+ beq .Lc2u_finished
cmp ip, #2
USER( strbt r3, [r0], #1) @ May fault
movge r3, r7, get_byte_3
USER( strgebt r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #0
USER( strgtbt r3, [r0], #1) @ May fault
- b .c2u_finished
+ b .Lc2u_finished
-.c2u_3fupi: subs r2, r2, #4
+.Lc2u_3fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .c2u_3nowords
+ bmi .Lc2u_3nowords
mov r3, r7, pull #24
ldr r7, [r1], #4
orr r3, r3, r7, push #8
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .c2u_3fupi
+ beq .Lc2u_3fupi
cmp r2, ip
movlt ip, r2
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
+ blt .Lc2u_3rem8lp
+
+.Lc2u_3cpy8lp: mov r3, r7, pull #24
ldmia r1!, {r4 - r7}
subs ip, ip, #16
orr r3, r3, r4, push #8
mov r6, r6, pull #24
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 )
+ bpl .Lc2u_3cpy8lp
-.c2u_3rem8lp: tst ip, #8
+.Lc2u_3rem8lp: tst ip, #8
movne r3, r7, pull #24
ldmneia r1!, {r4, r7}
orrne r3, r3, r4, push #8
orrne r3, r3, r7, push #8
strnet r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
- beq .c2u_3fupi
-.c2u_3nowords: mov r3, r7, get_byte_3
+ beq .Lc2u_3fupi
+.Lc2u_3nowords: mov r3, r7, get_byte_3
teq ip, #0
- beq .c2u_finished
+ beq .Lc2u_finished
cmp ip, #2
USER( strbt r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
USER( strgebt r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #0
USER( strgtbt r3, [r0], #1) @ May fault
- b .c2u_finished
+ b .Lc2u_finished
.section .fixup,"ax"
.align 0
* : n - number of bytes to copy
* Returns : Number of bytes NOT copied.
*/
-.cfu_dest_not_aligned:
+.Lcfu_dest_not_aligned:
rsb ip, ip, #4
cmp ip, #2
USER( ldrbt r3, [r1], #1) @ May fault
USER( ldrgtbt r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
sub r2, r2, ip
- b .cfu_dest_aligned
+ b .Lcfu_dest_aligned
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] )
+ blt .Lcfu_not_enough
ands ip, r0, #3
- bne .cfu_dest_not_aligned
-.cfu_dest_aligned:
+ bne .Lcfu_dest_not_aligned
+.Lcfu_dest_aligned:
ands ip, r1, #3
- bne .cfu_src_not_aligned
+ bne .Lcfu_src_not_aligned
+
/*
* Seeing as there has to be at least 8 bytes to copy, we can
* copy one word, and force a user-mode page fault...
*/
-.cfu_0fupi: subs r2, r2, #4
+.Lcfu_0fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .cfu_0nowords
+ bmi .Lcfu_0nowords
USER( ldrt r3, [r1], #4)
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .cfu_0fupi
+ beq .Lcfu_0fupi
/*
* ip = max no. of bytes to copy before needing another "strt" insn
*/
movlt ip, r2
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
+ blt .Lcfu_0rem8lp
+
+.Lcfu_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 )
+ bpl .Lcfu_0cpy8lp
-.cfu_0rem8lp: cmn ip, #16
+.Lcfu_0rem8lp: cmn ip, #16
ldmgeia r1!, {r3 - r6} @ Shouldnt fault
stmgeia r0!, {r3 - r6}
tst ip, #8
ldrnet r3, [r1], #4 @ Shouldnt fault
strne r3, [r0], #4
ands ip, ip, #3
- beq .cfu_0fupi
-.cfu_0nowords: teq ip, #0
- beq .cfu_finished
-.cfu_nowords: cmp ip, #2
+ beq .Lcfu_0fupi
+.Lcfu_0nowords: teq ip, #0
+ beq .Lcfu_finished
+.Lcfu_nowords: cmp ip, #2
USER( ldrbt r3, [r1], #1) @ May fault
strb r3, [r0], #1
USER( ldrgebt r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
USER( ldrgtbt r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
- b .cfu_finished
+ b .Lcfu_finished
-.cfu_not_enough:
+.Lcfu_not_enough:
movs ip, r2
- bne .cfu_nowords
-.cfu_finished: mov r0, #0
+ bne .Lcfu_nowords
+.Lcfu_finished: mov r0, #0
add sp, sp, #8
LOADREGS(fd,sp!,{r4 - r7, pc})
-.cfu_src_not_aligned:
+.Lcfu_src_not_aligned:
bic r1, r1, #3
USER( ldrt r7, [r1], #4) @ May fault
cmp ip, #2
- bgt .cfu_3fupi
- beq .cfu_2fupi
-.cfu_1fupi: subs r2, r2, #4
+ bgt .Lcfu_3fupi
+ beq .Lcfu_2fupi
+.Lcfu_1fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .cfu_1nowords
+ bmi .Lcfu_1nowords
mov r3, r7, pull #8
USER( ldrt r7, [r1], #4) @ May fault
orr r3, r3, r7, push #24
mov ip, r1, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .cfu_1fupi
+ beq .Lcfu_1fupi
cmp r2, ip
movlt ip, r2
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
+ blt .Lcfu_1rem8lp
+
+.Lcfu_1cpy8lp: mov r3, r7, pull #8
ldmia r1!, {r4 - r7} @ Shouldnt fault
subs ip, ip, #16
orr r3, r3, r4, push #24
mov r6, r6, pull #8
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 )
+ bpl .Lcfu_1cpy8lp
-.cfu_1rem8lp: tst ip, #8
+.Lcfu_1rem8lp: tst ip, #8
movne r3, r7, pull #8
ldmneia r1!, {r4, r7} @ Shouldnt fault
orrne r3, r3, r4, push #24
orrne r3, r3, r7, push #24
strne r3, [r0], #4
ands ip, ip, #3
- beq .cfu_1fupi
-.cfu_1nowords: mov r3, r7, get_byte_1
+ beq .Lcfu_1fupi
+.Lcfu_1nowords: mov r3, r7, get_byte_1
teq ip, #0
- beq .cfu_finished
+ beq .Lcfu_finished
cmp ip, #2
strb r3, [r0], #1
movge r3, r7, get_byte_2
strgeb r3, [r0], #1
movgt r3, r7, get_byte_3
strgtb r3, [r0], #1
- b .cfu_finished
+ b .Lcfu_finished
-.cfu_2fupi: subs r2, r2, #4
+.Lcfu_2fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .cfu_2nowords
+ bmi .Lcfu_2nowords
mov r3, r7, pull #16
USER( ldrt r7, [r1], #4) @ May fault
orr r3, r3, r7, push #16
mov ip, r1, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .cfu_2fupi
+ beq .Lcfu_2fupi
cmp r2, ip
movlt ip, r2
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
+ blt .Lcfu_2rem8lp
+
+
+.Lcfu_2cpy8lp: mov r3, r7, pull #16
ldmia r1!, {r4 - r7} @ Shouldnt fault
subs ip, ip, #16
orr r3, r3, r4, push #16
mov r6, r6, pull #16
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 )
+ bpl .Lcfu_2cpy8lp
-.cfu_2rem8lp: tst ip, #8
+.Lcfu_2rem8lp: tst ip, #8
movne r3, r7, pull #16
ldmneia r1!, {r4, r7} @ Shouldnt fault
orrne r3, r3, r4, push #16
orrne r3, r3, r7, push #16
strne r3, [r0], #4
ands ip, ip, #3
- beq .cfu_2fupi
-.cfu_2nowords: mov r3, r7, get_byte_2
+ beq .Lcfu_2fupi
+.Lcfu_2nowords: mov r3, r7, get_byte_2
teq ip, #0
- beq .cfu_finished
+ beq .Lcfu_finished
cmp ip, #2
strb r3, [r0], #1
movge r3, r7, get_byte_3
strgeb r3, [r0], #1
USER( ldrgtbt r3, [r1], #0) @ May fault
strgtb r3, [r0], #1
- b .cfu_finished
+ b .Lcfu_finished
-.cfu_3fupi: subs r2, r2, #4
+.Lcfu_3fupi: subs r2, r2, #4
addmi ip, r2, #4
- bmi .cfu_3nowords
+ bmi .Lcfu_3nowords
mov r3, r7, pull #24
USER( ldrt r7, [r1], #4) @ May fault
orr r3, r3, r7, push #8
mov ip, r1, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .cfu_3fupi
+ beq .Lcfu_3fupi
cmp r2, ip
movlt ip, r2
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
+ blt .Lcfu_3rem8lp
+
+.Lcfu_3cpy8lp: mov r3, r7, pull #24
ldmia r1!, {r4 - r7} @ Shouldnt fault
orr r3, r3, r4, push #8
mov r4, r4, pull #24
orr r6, r6, r7, push #8
stmia r0!, {r3 - r6}
subs ip, ip, #16
- bpl .cfu_3cpy8lp
- PLD( cmn ip, #32 )
- PLD( bge .cfu_3cpynopld )
- PLD( add ip, ip, #32 )
+ bpl .Lcfu_3cpy8lp
-.cfu_3rem8lp: tst ip, #8
+.Lcfu_3rem8lp: tst ip, #8
movne r3, r7, pull #24
ldmneia r1!, {r4, r7} @ Shouldnt fault
orrne r3, r3, r4, push #8
orrne r3, r3, r7, push #8
strne r3, [r0], #4
ands ip, ip, #3
- beq .cfu_3fupi
-.cfu_3nowords: mov r3, r7, get_byte_3
+ beq .Lcfu_3fupi
+.Lcfu_3nowords: mov r3, r7, get_byte_3
teq ip, #0
- beq .cfu_finished
+ beq .Lcfu_finished
cmp ip, #2
strb r3, [r0], #1
USER( ldrgebt r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
USER( ldrgtbt r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
- b .cfu_finished
+ b .Lcfu_finished
.section .fixup,"ax"
.align 0
LOADREGS(fd,sp!, {r4 - r7, pc})
.previous
-/* Prototype: int __arch_clear_user(void *addr, size_t sz)
- * Purpose : clear some user memory
- * Params : addr - user memory address to clear
- * : sz - number of bytes to clear
- * Returns : number of bytes NOT cleared
- */
-ENTRY(__arch_clear_user)
- stmfd sp!, {r1, lr}
- mov r2, #0
- cmp r1, #4
- blt 2f
- ands ip, r0, #3
- beq 1f
- cmp ip, #2
-USER( strbt r2, [r0], #1)
-USER( strlebt r2, [r0], #1)
-USER( strltbt r2, [r0], #1)
- rsb ip, ip, #4
- sub r1, r1, ip @ 7 6 5 4 3 2 1
-1: subs r1, r1, #8 @ -1 -2 -3 -4 -5 -6 -7
-USER( strplt r2, [r0], #4)
-USER( strplt r2, [r0], #4)
- bpl 1b
- adds r1, r1, #4 @ 3 2 1 0 -1 -2 -3
-USER( strplt r2, [r0], #4)
-2: tst r1, #2 @ 1x 1x 0x 0x 1x 1x 0x
-USER( strnebt r2, [r0], #1)
-USER( strnebt r2, [r0], #1)
- tst r1, #1 @ x1 x0 x1 x0 x1 x0 x1
-USER( strnebt r2, [r0], #1)
- mov r0, #0
- LOADREGS(fd,sp!, {r1, pc})
-
- .section .fixup,"ax"
- .align 0
-9001: LOADREGS(fd,sp!, {r0, pc})
- .previous
-
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