diff options
Diffstat (limited to 'arch/x86/lib/putuser_64.S')
| -rw-r--r-- | arch/x86/lib/putuser_64.S | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/arch/x86/lib/putuser_64.S b/arch/x86/lib/putuser_64.S deleted file mode 100644 index d496cc8e7308..000000000000 --- a/arch/x86/lib/putuser_64.S +++ /dev/null | |||
| @@ -1,94 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * __put_user functions. | ||
| 3 | * | ||
| 4 | * (C) Copyright 1998 Linus Torvalds | ||
| 5 | * (C) Copyright 2005 Andi Kleen | ||
| 6 | * | ||
| 7 | * These functions have a non-standard call interface | ||
| 8 | * to make them more efficient, especially as they | ||
| 9 | * return an error value in addition to the "real" | ||
| 10 | * return value. | ||
| 11 | */ | ||
| 12 | |||
| 13 | /* | ||
| 14 | * __put_user_X | ||
| 15 | * | ||
| 16 | * Inputs: %rcx contains the address | ||
| 17 | * %rdx contains new value | ||
| 18 | * | ||
| 19 | * Outputs: %rax is error code (0 or -EFAULT) | ||
| 20 | * | ||
| 21 | * %rbx is destroyed. | ||
| 22 | * | ||
| 23 | * These functions should not modify any other registers, | ||
| 24 | * as they get called from within inline assembly. | ||
| 25 | */ | ||
| 26 | |||
| 27 | #include <linux/linkage.h> | ||
| 28 | #include <asm/dwarf2.h> | ||
| 29 | #include <asm/page.h> | ||
| 30 | #include <asm/errno.h> | ||
| 31 | #include <asm/asm-offsets.h> | ||
| 32 | #include <asm/thread_info.h> | ||
| 33 | #include <asm/asm.h> | ||
| 34 | |||
| 35 | #define ENTER CFI_STARTPROC ; \ | ||
| 36 | GET_THREAD_INFO(%_ASM_BX) | ||
| 37 | #define EXIT ret ; \ | ||
| 38 | CFI_ENDPROC | ||
| 39 | |||
| 40 | .text | ||
| 41 | ENTRY(__put_user_1) | ||
| 42 | ENTER | ||
| 43 | cmp TI_addr_limit(%_ASM_BX),%_ASM_CX | ||
| 44 | jae bad_put_user | ||
| 45 | 1: movb %al,(%_ASM_CX) | ||
| 46 | xor %eax,%eax | ||
| 47 | EXIT | ||
| 48 | ENDPROC(__put_user_1) | ||
| 49 | |||
| 50 | ENTRY(__put_user_2) | ||
| 51 | ENTER | ||
| 52 | mov TI_addr_limit(%_ASM_BX),%_ASM_BX | ||
| 53 | sub $1, %_ASM_BX | ||
| 54 | cmp %_ASM_BX ,%_ASM_CX | ||
| 55 | jae bad_put_user | ||
| 56 | 2: movw %ax,(%_ASM_CX) | ||
| 57 | xor %eax,%eax | ||
| 58 | EXIT | ||
| 59 | ENDPROC(__put_user_2) | ||
| 60 | |||
| 61 | ENTRY(__put_user_4) | ||
| 62 | ENTER | ||
| 63 | mov TI_addr_limit(%_ASM_BX),%_ASM_BX | ||
| 64 | sub $3, %_ASM_BX | ||
| 65 | cmp %_ASM_BX, %_ASM_CX | ||
| 66 | jae bad_put_user | ||
| 67 | 3: movl %eax,(%_ASM_CX) | ||
| 68 | xor %eax,%eax | ||
| 69 | EXIT | ||
| 70 | ENDPROC(__put_user_4) | ||
| 71 | |||
| 72 | ENTRY(__put_user_8) | ||
| 73 | ENTER | ||
| 74 | mov TI_addr_limit(%_ASM_BX),%_ASM_BX | ||
| 75 | sub $7, %_ASM_BX | ||
| 76 | cmp %_ASM_BX, %_ASM_CX | ||
| 77 | jae bad_put_user | ||
| 78 | 4: movq %_ASM_AX,(%_ASM_CX) | ||
| 79 | xor %eax,%eax | ||
| 80 | EXIT | ||
| 81 | ENDPROC(__put_user_8) | ||
| 82 | |||
| 83 | bad_put_user: | ||
| 84 | CFI_STARTPROC | ||
| 85 | mov $(-EFAULT),%eax | ||
| 86 | EXIT | ||
| 87 | END(bad_put_user) | ||
| 88 | |||
| 89 | .section __ex_table,"a" | ||
| 90 | _ASM_PTR 1b,bad_put_user | ||
| 91 | _ASM_PTR 2b,bad_put_user | ||
| 92 | _ASM_PTR 3b,bad_put_user | ||
| 93 | _ASM_PTR 4b,bad_put_user | ||
| 94 | .previous | ||