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Diffstat (limited to 'arch/arm26/lib/csumpartialcopyuser.S')
-rw-r--r-- | arch/arm26/lib/csumpartialcopyuser.S | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/arch/arm26/lib/csumpartialcopyuser.S b/arch/arm26/lib/csumpartialcopyuser.S deleted file mode 100644 index a98eea74305..00000000000 --- a/arch/arm26/lib/csumpartialcopyuser.S +++ /dev/null @@ -1,114 +0,0 @@ -/* - * linux/arch/arm26/lib/csumpartialcopyuser.S - * - * Copyright (C) 1995-1998 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/linkage.h> -#include <asm/assembler.h> -#include <asm/errno.h> -#include <asm/asm-offsets.h> - - .text - - .macro save_regs - stmfd sp!, {r1 - r2, r4 - r9, fp, ip, lr, pc} - mov r9, sp, lsr #13 - mov r9, r9, lsl #13 - ldr r9, [r9, #TSK_ADDR_LIMIT] - mov r9, r9, lsr #24 - .endm - - .macro load_regs,flags - ldm\flags fp, {r1, r2, r4-r9, fp, sp, pc}^ - .endm - - .macro load1b, reg1 - tst r9, #0x01 -9999: ldreqbt \reg1, [r0], #1 - ldrneb \reg1, [r0], #1 - .section __ex_table, "a" - .align 3 - .long 9999b, 6001f - .previous - .endm - - .macro load2b, reg1, reg2 - tst r9, #0x01 -9999: ldreqbt \reg1, [r0], #1 - ldrneb \reg1, [r0], #1 -9998: ldreqbt \reg2, [r0], #1 - ldrneb \reg2, [r0], #1 - .section __ex_table, "a" - .long 9999b, 6001f - .long 9998b, 6001f - .previous - .endm - - .macro load1l, reg1 - tst r9, #0x01 -9999: ldreqt \reg1, [r0], #4 - ldrne \reg1, [r0], #4 - .section __ex_table, "a" - .align 3 - .long 9999b, 6001f - .previous - .endm - - .macro load2l, reg1, reg2 - tst r9, #0x01 - ldmneia r0!, {\reg1, \reg2} -9999: ldreqt \reg1, [r0], #4 -9998: ldreqt \reg2, [r0], #4 - .section __ex_table, "a" - .long 9999b, 6001f - .long 9998b, 6001f - .previous - .endm - - .macro load4l, reg1, reg2, reg3, reg4 - tst r9, #0x01 - ldmneia r0!, {\reg1, \reg2, \reg3, \reg4} -9999: ldreqt \reg1, [r0], #4 -9998: ldreqt \reg2, [r0], #4 -9997: ldreqt \reg3, [r0], #4 -9996: ldreqt \reg4, [r0], #4 - .section __ex_table, "a" - .long 9999b, 6001f - .long 9998b, 6001f - .long 9997b, 6001f - .long 9996b, 6001f - .previous - .endm - -/* - * unsigned int - * csum_partial_copy_from_user(const char *src, char *dst, int len, int sum, int *err_ptr) - * r0 = src, r1 = dst, r2 = len, r3 = sum, [sp] = *err_ptr - * Returns : r0 = checksum, [[sp, #0], #0] = 0 or -EFAULT - */ - -#define FN_ENTRY ENTRY(csum_partial_copy_from_user) - -#include "csumpartialcopygeneric.S" - -/* - * FIXME: minor buglet here - * We don't return the checksum for the data present in the buffer. To do - * so properly, we would have to add in whatever registers were loaded before - * the fault, which, with the current asm above is not predictable. - */ - .align 4 -6001: mov r4, #-EFAULT - ldr r5, [fp, #4] @ *err_ptr - str r4, [r5] - ldmia sp, {r1, r2} @ retrieve dst, len - add r2, r2, r1 - mov r0, #0 @ zero the buffer -6002: teq r2, r1 - strneb r0, [r1], #1 - bne 6002b - load_regs ea |