Subversion Repositories Kolibri OS

Rev

Rev 5270 | Rev 6934 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
5270 serge 1
#ifndef _ASM_X86_ASM_H
2
#define _ASM_X86_ASM_H
3
 
4
#ifdef __ASSEMBLY__
5
# define __ASM_FORM(x)	x
6
# define __ASM_FORM_RAW(x)     x
7
# define __ASM_FORM_COMMA(x) x,
8
#else
9
# define __ASM_FORM(x)	" " #x " "
10
# define __ASM_FORM_RAW(x)     #x
11
# define __ASM_FORM_COMMA(x) " " #x ","
12
#endif
13
 
14
#ifdef CONFIG_X86_32
15
# define __ASM_SEL(a,b) __ASM_FORM(a)
16
# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(a)
17
#else
18
# define __ASM_SEL(a,b) __ASM_FORM(b)
19
# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(b)
20
#endif
21
 
22
#define __ASM_SIZE(inst, ...)	__ASM_SEL(inst##l##__VA_ARGS__, \
23
					  inst##q##__VA_ARGS__)
24
#define __ASM_REG(reg)         __ASM_SEL_RAW(e##reg, r##reg)
25
 
26
#define _ASM_PTR	__ASM_SEL(.long, .quad)
27
#define _ASM_ALIGN	__ASM_SEL(.balign 4, .balign 8)
28
 
29
#define _ASM_MOV	__ASM_SIZE(mov)
30
#define _ASM_INC	__ASM_SIZE(inc)
31
#define _ASM_DEC	__ASM_SIZE(dec)
32
#define _ASM_ADD	__ASM_SIZE(add)
33
#define _ASM_SUB	__ASM_SIZE(sub)
34
#define _ASM_XADD	__ASM_SIZE(xadd)
35
 
36
#define _ASM_AX		__ASM_REG(ax)
37
#define _ASM_BX		__ASM_REG(bx)
38
#define _ASM_CX		__ASM_REG(cx)
39
#define _ASM_DX		__ASM_REG(dx)
40
#define _ASM_SP		__ASM_REG(sp)
41
#define _ASM_BP		__ASM_REG(bp)
42
#define _ASM_SI		__ASM_REG(si)
43
#define _ASM_DI		__ASM_REG(di)
44
 
45
/* Exception table entry */
46
#ifdef __ASSEMBLY__
6082 serge 47
# define _ASM_EXTABLE(from,to)					\
5270 serge 48
	.pushsection "__ex_table","a" ;				\
49
	.balign 8 ;						\
50
	.long (from) - . ;					\
51
	.long (to) - . ;					\
52
	.popsection
53
 
54
# define _ASM_EXTABLE_EX(from,to)				\
55
	.pushsection "__ex_table","a" ;				\
56
	.balign 8 ;						\
57
	.long (from) - . ;					\
58
	.long (to) - . + 0x7ffffff0 ;				\
59
	.popsection
60
 
61
# define _ASM_NOKPROBE(entry)					\
62
	.pushsection "_kprobe_blacklist","aw" ;			\
6082 serge 63
	_ASM_ALIGN ;						\
5270 serge 64
	_ASM_PTR (entry);					\
65
	.popsection
6082 serge 66
 
67
.macro ALIGN_DESTINATION
68
	/* check for bad alignment of destination */
69
	movl %edi,%ecx
70
	andl $7,%ecx
71
	jz 102f				/* already aligned */
72
	subl $8,%ecx
73
	negl %ecx
74
	subl %ecx,%edx
75
100:	movb (%rsi),%al
76
101:	movb %al,(%rdi)
77
	incq %rsi
78
	incq %rdi
79
	decl %ecx
80
	jnz 100b
81
102:
82
	.section .fixup,"ax"
83
103:	addl %ecx,%edx			/* ecx is zerorest also */
84
	jmp copy_user_handle_tail
85
	.previous
86
 
87
	_ASM_EXTABLE(100b,103b)
88
	_ASM_EXTABLE(101b,103b)
89
	.endm
90
 
5270 serge 91
#else
6082 serge 92
# define _ASM_EXTABLE(from,to)					\
5270 serge 93
	" .pushsection \"__ex_table\",\"a\"\n"			\
94
	" .balign 8\n"						\
95
	" .long (" #from ") - .\n"				\
96
	" .long (" #to ") - .\n"				\
97
	" .popsection\n"
98
 
99
# define _ASM_EXTABLE_EX(from,to)				\
100
	" .pushsection \"__ex_table\",\"a\"\n"			\
101
	" .balign 8\n"						\
102
	" .long (" #from ") - .\n"				\
103
	" .long (" #to ") - . + 0x7ffffff0\n"			\
104
	" .popsection\n"
105
/* For C file, we already have NOKPROBE_SYMBOL macro */
106
#endif
107
 
108
#endif /* _ASM_X86_ASM_H */