提交 2528de43 编写于 作者: G Glauber Costa 提交者: Ingo Molnar

x86: use macros from asm.h.

In putuser_32.S and putuser_64.S, replace things like .quad, .long,
and explicit references to [r|e]ax for the apropriate macros
in asm/asm.h.
Signed-off-by: NGlauber Costa <gcosta@redhat.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 efea505d
......@@ -11,6 +11,7 @@
#include <linux/linkage.h>
#include <asm/dwarf2.h>
#include <asm/thread_info.h>
#include <asm/asm.h>
/*
......@@ -26,50 +27,50 @@
*/
#define ENTER CFI_STARTPROC ; \
GET_THREAD_INFO(%ebx)
GET_THREAD_INFO(%_ASM_BX)
#define EXIT ret ; \
CFI_ENDPROC
.text
ENTRY(__put_user_1)
ENTER
cmp TI_addr_limit(%ebx),%ecx
cmp TI_addr_limit(%_ASM_BX),%_ASM_CX
jae bad_put_user
1: movb %al,(%ecx)
1: movb %al,(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_1)
ENTRY(__put_user_2)
ENTER
mov TI_addr_limit(%ebx),%ebx
sub $1,%ebx
cmp %ebx,%ecx
mov TI_addr_limit(%_ASM_BX),%_ASM_BX
sub $1,%_ASM_BX
cmp %_ASM_BX,%_ASM_CX
jae bad_put_user
2: movw %ax,(%ecx)
2: movw %ax,(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_2)
ENTRY(__put_user_4)
ENTER
mov TI_addr_limit(%ebx),%ebx
sub $3,%ebx
cmp %ebx,%ecx
mov TI_addr_limit(%_ASM_BX),%_ASM_BX
sub $3,%_ASM_BX
cmp %_ASM_BX,%_ASM_CX
jae bad_put_user
3: movl %eax,(%ecx)
3: movl %eax,(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_4)
ENTRY(__put_user_8)
ENTER
mov TI_addr_limit(%ebx),%ebx
sub $7,%ebx
cmp %ebx,%ecx
mov TI_addr_limit(%_ASM_BX),%_ASM_BX
sub $7,%_ASM_BX
cmp %_ASM_BX,%_ASM_CX
jae bad_put_user
4: movl %eax,(%ecx)
5: movl %edx,4(%ecx)
4: movl %_ASM_AX,(%_ASM_CX)
5: movl %edx,4(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_8)
......@@ -81,9 +82,9 @@ bad_put_user:
END(bad_put_user)
.section __ex_table,"a"
.long 1b,bad_put_user
.long 2b,bad_put_user
.long 3b,bad_put_user
.long 4b,bad_put_user
.long 5b,bad_put_user
_ASM_PTR 1b,bad_put_user
_ASM_PTR 2b,bad_put_user
_ASM_PTR 3b,bad_put_user
_ASM_PTR 4b,bad_put_user
_ASM_PTR 5b,bad_put_user
.previous
......@@ -30,64 +30,65 @@
#include <asm/errno.h>
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#include <asm/asm.h>
#define ENTER CFI_STARTPROC ; \
GET_THREAD_INFO(%rbx)
GET_THREAD_INFO(%_ASM_BX)
#define EXIT ret ; \
CFI_ENDPROC
.text
ENTRY(__put_user_1)
ENTER
cmp TI_addr_limit(%rbx),%rcx
cmp TI_addr_limit(%_ASM_BX),%_ASM_CX
jae bad_put_user
1: movb %al,(%rcx)
1: movb %al,(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_1)
ENTRY(__put_user_2)
ENTER
mov TI_addr_limit(%rbx),%rbx
sub $1, %rbx
cmp %rbx ,%rcx
mov TI_addr_limit(%_ASM_BX),%_ASM_BX
sub $1, %_ASM_BX
cmp %_ASM_BX ,%_ASM_CX
jae bad_put_user
2: movw %ax,(%rcx)
2: movw %ax,(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_2)
ENTRY(__put_user_4)
ENTER
mov TI_addr_limit(%rbx),%rbx
sub $3, %rbx
cmp %rbx, %rcx
mov TI_addr_limit(%_ASM_BX),%_ASM_BX
sub $3, %_ASM_BX
cmp %_ASM_BX, %_ASM_CX
jae bad_put_user
3: movl %eax,(%rcx)
3: movl %eax,(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_4)
ENTRY(__put_user_8)
ENTER
mov TI_addr_limit(%rbx),%rbx
sub $7, %rbx
cmp %rbx, %rcx
mov TI_addr_limit(%_ASM_BX),%_ASM_BX
sub $7, %_ASM_BX
cmp %_ASM_BX, %_ASM_CX
jae bad_put_user
4: movq %rax,(%rcx)
4: movq %_ASM_AX,(%_ASM_CX)
xor %eax,%eax
EXIT
ENDPROC(__put_user_8)
bad_put_user:
CFI_STARTPROC
mov $(-EFAULT),%rax
mov $(-EFAULT),%eax
EXIT
END(bad_put_user)
.section __ex_table,"a"
.quad 1b,bad_put_user
.quad 2b,bad_put_user
.quad 3b,bad_put_user
.quad 4b,bad_put_user
_ASM_PTR 1b,bad_put_user
_ASM_PTR 2b,bad_put_user
_ASM_PTR 3b,bad_put_user
_ASM_PTR 4b,bad_put_user
.previous
......@@ -28,6 +28,8 @@
#define _ASM_SUB __ASM_SIZE(sub)
#define _ASM_XADD __ASM_SIZE(xadd)
#define _ASM_AX __ASM_REG(ax)
#define _ASM_BX __ASM_REG(bx)
#define _ASM_CX __ASM_REG(cx)
#define _ASM_DX __ASM_REG(dx)
/* Exception table entry */
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册