diff options
Diffstat (limited to 'linux/src/include/asm-i386/segment.h')
| -rw-r--r-- | linux/src/include/asm-i386/segment.h | 117 |
1 files changed, 79 insertions, 38 deletions
diff --git a/linux/src/include/asm-i386/segment.h b/linux/src/include/asm-i386/segment.h index 6052ad4..300ba53 100644 --- a/linux/src/include/asm-i386/segment.h +++ b/linux/src/include/asm-i386/segment.h @@ -1,12 +1,29 @@ #ifndef _ASM_SEGMENT_H #define _ASM_SEGMENT_H +#ifdef MACH + +#ifdef MACH_HYP +#define KERNEL_CS 0x09 +#define KERNEL_DS 0x11 +#else /* MACH_HYP */ +#define KERNEL_CS 0x08 +#define KERNEL_DS 0x10 +#endif /* MACH_HYP */ + +#define USER_CS 0x17 +#define USER_DS 0x1F + +#else /* !MACH */ + #define KERNEL_CS 0x10 #define KERNEL_DS 0x18 #define USER_CS 0x23 #define USER_DS 0x2B +#endif /* !MACH */ + #ifndef __ASSEMBLY__ /* @@ -32,7 +49,7 @@ struct __segment_dummy { unsigned long a[100]; }; #define __sd(x) ((struct __segment_dummy *) (x)) #define __const_sd(x) ((const struct __segment_dummy *) (x)) -static inline void __put_user(unsigned long x, void * y, int size) +static inline void __attribute__((always_inline)) __put_user(unsigned long x, void * y, int size) { switch (size) { case 1: @@ -55,7 +72,7 @@ static inline void __put_user(unsigned long x, void * y, int size) } } -static inline unsigned long __get_user(const void * y, int size) +static inline unsigned long __attribute__((always_inline)) __get_user(const void * y, int size) { unsigned long result; @@ -80,27 +97,28 @@ static inline unsigned long __get_user(const void * y, int size) } } +#if defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) static inline void __generic_memcpy_tofs(void * to, const void * from, unsigned long n) { __asm__ volatile - (" cld - push %%es - push %%fs - cmpl $3,%0 - pop %%es - jbe 1f - movl %%edi,%%ecx - negl %%ecx - andl $3,%%ecx - subl %%ecx,%0 - rep; movsb - movl %0,%%ecx - shrl $2,%%ecx - rep; movsl - andl $3,%0 - 1: movl %0,%%ecx - rep; movsb - pop %%es" + ("cld\n" + "push %%es\n" + "push %%fs\n" + "cmpl $3,%0\n" + "pop %%es\n" + "jbe 1f\n" + "movl %%edi,%%ecx\n" + "negl %%ecx\n" + "andl $3,%%ecx\n" + "subl %%ecx,%0\n" + "rep; movsb\n" + "movl %0,%%ecx\n" + "shrl $2,%%ecx\n" + "rep; movsl\n" + "andl $3,%0\n" + "1: movl %0,%%ecx\n" + "rep; movsb\n" + "pop %%es\n" :"=abd" (n) :"0" (n),"D" ((long) to),"S" ((long) from) :"cx","di","si"); @@ -171,24 +189,24 @@ __asm__("cld\n\t" \ static inline void __generic_memcpy_fromfs(void * to, const void * from, unsigned long n) { - __asm__ volatile - (" cld - cmpl $3,%0 - jbe 1f - movl %%edi,%%ecx - negl %%ecx - andl $3,%%ecx - subl %%ecx,%0 - fs; rep; movsb - movl %0,%%ecx - shrl $2,%%ecx - fs; rep; movsl - andl $3,%0 - 1: movl %0,%%ecx - fs; rep; movsb" - :"=abd" (n) - :"0" (n),"D" ((long) to),"S" ((long) from) - :"cx","di","si", "memory"); + __asm__ volatile + ("cld\n" + "cmpl $3,%0\n" + "jbe 1f\n" + "movl %%edi,%%ecx\n" + "negl %%ecx\n" + "andl $3,%%ecx\n" + "subl %%ecx,%0\n" + "fs; rep; movsb\n" + "movl %0,%%ecx\n" + "shrl $2,%%ecx\n" + "fs; rep; movsl\n" + "andl $3,%0\n" + "1:movl %0,%%ecx\n" + "fs; rep; movsb\n" + :"=abd" (n) + :"0" (n),"D" ((long) to),"S" ((long) from) + :"cx","di","si", "memory"); } static inline void __constant_memcpy_fromfs(void * to, const void * from, unsigned long n) @@ -260,6 +278,29 @@ __asm__("cld\n\t" \ __constant_memcpy_tofs((to),(from),(n)) : \ __generic_memcpy_tofs((to),(from),(n))) + +#else /* code for gcc-2.95.x and newer follows */ + +static inline void memcpy_fromfs(void * to, const void * from, unsigned long n) +{ + char *d = (char *)to; + const char *s = (const char *)from; + while (n-- > 0) { + *d++ = __get_user(s++, 1); + } +} + +static inline void memcpy_tofs(void * to, const void * from, unsigned long n) +{ + char *d = (char *)to; + const char *s = (const char *)from; + while (n-- > 0) { + __put_user(*s++, d++, 1); + } +} + +#endif /* not gcc-2.95 */ + /* * These are deprecated.. * |