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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [proc-armo/] [segment.h] - Blame information for rev 1777

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/*
 * linux/include/asm-arm/proc-armo/segment.h
 *
 * Copyright (C) 1996 Russell King
 */
 
#ifndef __ASM_PROC_SEGMENT_H
#define __ASM_PROC_SEGMENT_H
 
static __inline__ void __put_user(unsigned long x, void * y, int size)
{
        switch (size) {
        case 1:
        __asm__(
       "teq     %2, #0\n"
       "strnebt %0, [%1]\n"
       "streqb  %0, [%1]\n"
        : : "r" (x), "r" (y), "r" (current->tss.fs)
        : "lr", "cc");
        break;
        case 2:
        { register unsigned long tmp1 = x; void *tmp2 = y;
        __asm__ __volatile__(
       "teq     %4, #0\n"
       "strnebt %0, [%1], #1\n"
       "streqb  %0, [%1], #1\n"
       "mov     %0, %0, lsr #8\n"
       "strnebt %0, [%1]\n"
       "streqb  %0, [%1]\n"
        : "=&r" (tmp1), "=&r" (tmp2)
        : "0" (tmp1), "1" (tmp2), "r" (current->tss.fs)
        : "lr", "cc");
        }
        break;
        case 4:
        __asm__(
       "teq     %2, #0\n"
       "strnet  %0, [%1]\n"
       "streq   %0, [%1]\n"
        : : "r" (x), "r" (y), "r" (current->tss.fs)
        : "lr", "cc");
        break;
        default:
        bad_user_access_length ();
        }
}
 
static __inline__ unsigned long __get_user(const void *y, int size)
{
        unsigned long result;
 
        switch (size) {
        case 1:
        __asm__(
       "teq     %2, #0\n"
       "ldrnebt %0, [%1]\n"
       "ldreqb  %0, [%1]\n"
        : "=r" (result)
        : "r" (y), "r" (current->tss.fs)
        : "lr", "cc");
        return result;
        case 2:
        __asm__(
       "teq     %2, #0\n"
       "ldrnet  %0, [%1]\n"
       "ldreq   %0, [%1]\n"
       "mov     %0, %0, lsl #16\n"
       "mov     %0, %0, lsr #16\n"
        : "=&r" (result)
        : "r" (y), "r" (current->tss.fs)
        : "lr", "cc");
        return result;
        case 4:
        __asm__(
       "teq     %2, #0\n"
       "ldrnet  %0, [%1]\n"
       "ldreq   %0, [%1]\n"
        : "=r" (result)
        : "r" (y), "r" (current->tss.fs)
        : "lr", "cc");
        return result;
        default:
        return bad_user_access_length ();
        }
}
 
#endif /* __ASM_PROC_SEGMENT_H */
 

Line No.	Rev	Author	Line
1	1633	jcastillo	`/*`
2			`* linux/include/asm-arm/proc-armo/segment.h`
3			`*`
4			`* Copyright (C) 1996 Russell King`
5			`*/`
6
7			`#ifndef __ASM_PROC_SEGMENT_H`
8			`#define __ASM_PROC_SEGMENT_H`
9
10			`static __inline__ void __put_user(unsigned long x, void * y, int size)`
11			`{`
12			`switch (size) {`
13			`case 1:`
14			`__asm__(`
15			`"teq %2, #0\n"`
16			`"strnebt %0, [%1]\n"`
17			`"streqb %0, [%1]\n"`
18			`: : "r" (x), "r" (y), "r" (current->tss.fs)`
19			`: "lr", "cc");`
20			`break;`
21			`case 2:`
22			`{ register unsigned long tmp1 = x; void *tmp2 = y;`
23			`__asm__ __volatile__(`
24			`"teq %4, #0\n"`
25			`"strnebt %0, [%1], #1\n"`
26			`"streqb %0, [%1], #1\n"`
27			`"mov %0, %0, lsr #8\n"`
28			`"strnebt %0, [%1]\n"`
29			`"streqb %0, [%1]\n"`
30			`: "=&r" (tmp1), "=&r" (tmp2)`
31			`: "0" (tmp1), "1" (tmp2), "r" (current->tss.fs)`
32			`: "lr", "cc");`
33			`}`
34			`break;`
35			`case 4:`
36			`__asm__(`
37			`"teq %2, #0\n"`
38			`"strnet %0, [%1]\n"`
39			`"streq %0, [%1]\n"`
40			`: : "r" (x), "r" (y), "r" (current->tss.fs)`
41			`: "lr", "cc");`
42			`break;`
43			`default:`
44			`bad_user_access_length ();`
45			`}`
46			`}`
47
48			`static __inline__ unsigned long __get_user(const void *y, int size)`
49			`{`
50			`unsigned long result;`
51
52			`switch (size) {`
53			`case 1:`
54			`__asm__(`
55			`"teq %2, #0\n"`
56			`"ldrnebt %0, [%1]\n"`
57			`"ldreqb %0, [%1]\n"`
58			`: "=r" (result)`
59			`: "r" (y), "r" (current->tss.fs)`
60			`: "lr", "cc");`
61			`return result;`
62			`case 2:`
63			`__asm__(`
64			`"teq %2, #0\n"`
65			`"ldrnet %0, [%1]\n"`
66			`"ldreq %0, [%1]\n"`
67			`"mov %0, %0, lsl #16\n"`
68			`"mov %0, %0, lsr #16\n"`
69			`: "=&r" (result)`
70			`: "r" (y), "r" (current->tss.fs)`
71			`: "lr", "cc");`
72			`return result;`
73			`case 4:`
74			`__asm__(`
75			`"teq %2, #0\n"`
76			`"ldrnet %0, [%1]\n"`
77			`"ldreq %0, [%1]\n"`
78			`: "=r" (result)`
79			`: "r" (y), "r" (current->tss.fs)`
80			`: "lr", "cc");`
81			`return result;`
82			`default:`
83			`return bad_user_access_length ();`
84			`}`
85			`}`
86
87			`#endif /* __ASM_PROC_SEGMENT_H */`
88

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [proc-armo/] [segment.h] - Blame information for rev 1777