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Diffstat (limited to 'linux/src/include/asm-i386/segment.h')
-rw-r--r--linux/src/include/asm-i386/segment.h117
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..
*