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-rw-r--r--arch/arm26/lib/uaccess-kernel.S173
1 files changed, 0 insertions, 173 deletions
diff --git a/arch/arm26/lib/uaccess-kernel.S b/arch/arm26/lib/uaccess-kernel.S
deleted file mode 100644
index 3950a1f6bc99..000000000000
--- a/arch/arm26/lib/uaccess-kernel.S
+++ /dev/null
@@ -1,173 +0,0 @@
-/*
- * linux/arch/arm26/lib/uaccess-kernel.S
- *
- * Copyright (C) 1998 Russell King
- *
- * Note! Some code fragments found in here have a special calling
- * convention - they are not APCS compliant!
- *
- * 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>
-
- .text
-
-//FIXME - surely this can be done in C not asm, removing the problem of keeping C and asm in sync? (this is a struct uaccess_t)
-
- .globl uaccess_kernel
-uaccess_kernel:
- .word uaccess_kernel_put_byte
- .word uaccess_kernel_get_byte
- .word uaccess_kernel_put_half
- .word uaccess_kernel_get_half
- .word uaccess_kernel_put_word
- .word uaccess_kernel_get_word
- .word uaccess_kernel_put_dword
- .word uaccess_kernel_copy
- .word uaccess_kernel_copy
- .word uaccess_kernel_clear
- .word uaccess_kernel_strncpy
- .word uaccess_kernel_strnlen
-
-@ In : r0 = x, r1 = addr, r2 = error
-@ Out: r2 = error
-uaccess_kernel_put_byte:
- stmfd sp!, {lr}
- strb r0, [r1]
- ldmfd sp!, {pc}^
-
-@ In : r0 = x, r1 = addr, r2 = error
-@ Out: r2 = error
-uaccess_kernel_put_half:
- stmfd sp!, {lr}
- strb r0, [r1]
- mov r0, r0, lsr #8
- strb r0, [r1, #1]
- ldmfd sp!, {pc}^
-
-@ In : r0 = x, r1 = addr, r2 = error
-@ Out: r2 = error
-uaccess_kernel_put_word:
- stmfd sp!, {lr}
- str r0, [r1]
- ldmfd sp!, {pc}^
-
-@ In : r0 = x, r1 = addr, r2 = error
-@ Out: r2 = error
-uaccess_kernel_put_dword:
- stmfd sp!, {lr}
- str r0, [r1], #4
- str r0, [r1], #0
- ldmfd sp!, {pc}^
-
-@ In : r0 = addr, r1 = error
-@ Out: r0 = x, r1 = error
-uaccess_kernel_get_byte:
- stmfd sp!, {lr}
- ldrb r0, [r0]
- ldmfd sp!, {pc}^
-
-@ In : r0 = addr, r1 = error
-@ Out: r0 = x, r1 = error
-uaccess_kernel_get_half:
- stmfd sp!, {lr}
- ldr r0, [r0]
- mov r0, r0, lsl #16
- mov r0, r0, lsr #16
- ldmfd sp!, {pc}^
-
-@ In : r0 = addr, r1 = error
-@ Out: r0 = x, r1 = error
-uaccess_kernel_get_word:
- stmfd sp!, {lr}
- ldr r0, [r0]
- ldmfd sp!, {pc}^
-
-
-/* Prototype: int uaccess_kernel_copy(void *to, const char *from, size_t n)
- * Purpose : copy a block to kernel memory from kernel memory
- * Params : to - kernel memory
- * : from - kernel memory
- * : n - number of bytes to copy
- * Returns : Number of bytes NOT copied.
- */
-uaccess_kernel_copy:
- stmfd sp!, {lr}
- bl memcpy
- mov r0, #0
- ldmfd sp!, {pc}^
-
-/* Prototype: int uaccess_kernel_clear(void *addr, size_t sz)
- * Purpose : clear some kernel memory
- * Params : addr - kernel memory address to clear
- * : sz - number of bytes to clear
- * Returns : number of bytes NOT cleared
- */
-uaccess_kernel_clear:
- stmfd sp!, {lr}
- mov r2, #0
- cmp r1, #4
- blt 2f
- ands ip, r0, #3
- beq 1f
- cmp ip, #1
- strb r2, [r0], #1
- strleb r2, [r0], #1
- strltb 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
- bmi 2f
- str r2, [r0], #4
- str r2, [r0], #4
- b 1b
-2: adds r1, r1, #4 @ 3 2 1 0 -1 -2 -3
- strpl r2, [r0], #4
- tst r1, #2 @ 1x 1x 0x 0x 1x 1x 0x
- strneb r2, [r0], #1
- strneb r2, [r0], #1
- tst r1, #1 @ x1 x0 x1 x0 x1 x0 x1
- strneb r2, [r0], #1
- mov r0, #0
- ldmfd sp!, {pc}^
-
-/* Prototype: size_t uaccess_kernel_strncpy(char *dst, char *src, size_t len)
- * Purpose : copy a string from kernel memory to kernel memory
- * Params : dst - kernel memory destination
- * : src - kernel memory source
- * : len - maximum length of string
- * Returns : number of characters copied
- */
-uaccess_kernel_strncpy:
- stmfd sp!, {lr}
- mov ip, r2
-1: subs r2, r2, #1
- bmi 2f
- ldrb r3, [r1], #1
- strb r3, [r0], #1
- teq r3, #0
- bne 1b
-2: subs r0, ip, r2
- ldmfd sp!, {pc}^
-
-/* Prototype: int uaccess_kernel_strlen(char *str, long n)
- * Purpose : get length of a string in kernel memory
- * Params : str - address of string in kernel memory
- * Returns : length of string *including terminator*,
- * or zero on exception, or n + 1 if too long
- */
-uaccess_kernel_strnlen:
- stmfd sp!, {lr}
- mov r2, r0
-1: ldrb r1, [r0], #1
- teq r1, #0
- beq 2f
- subs r1, r1, #1
- bne 1b
- add r0, r0, #1
-2: sub r0, r0, r2
- ldmfd sp!, {pc}^
-