#ifndef _M68K_SEGMENT_H
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#ifndef _M68K_SEGMENT_H
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#define _M68K_SEGMENT_H
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#define _M68K_SEGMENT_H
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|
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/* define constants */
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/* define constants */
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/* Address spaces (FC0-FC2) */
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/* Address spaces (FC0-FC2) */
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#define USER_DATA (1)
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#define USER_DATA (1)
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#ifndef USER_DS
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#ifndef USER_DS
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#define USER_DS (USER_DATA)
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#define USER_DS (USER_DATA)
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#endif
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#endif
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#define USER_PROGRAM (2)
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#define USER_PROGRAM (2)
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#define SUPER_DATA (5)
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#define SUPER_DATA (5)
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#ifndef KERNEL_DS
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#ifndef KERNEL_DS
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#define KERNEL_DS (SUPER_DATA)
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#define KERNEL_DS (SUPER_DATA)
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#endif
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#endif
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#define SUPER_PROGRAM (6)
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#define SUPER_PROGRAM (6)
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#define CPU_SPACE (7)
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#define CPU_SPACE (7)
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|
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#ifndef __ASSEMBLY__
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#ifndef __ASSEMBLY__
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|
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/*
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/*
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* Uh, these should become the main single-value transfer routines..
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* Uh, these should become the main single-value transfer routines..
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* They automatically use the right size if we just have the right
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* They automatically use the right size if we just have the right
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* pointer type..
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* pointer type..
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*/
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*/
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#define put_user(x,ptr) __put_user((unsigned long)(x),(ptr),sizeof(*(ptr)))
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#define put_user(x,ptr) __put_user((unsigned long)(x),(ptr),sizeof(*(ptr)))
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#define get_user(ptr) ((__typeof__(*(ptr)))__get_user((ptr),sizeof(*(ptr))))
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#define get_user(ptr) ((__typeof__(*(ptr)))__get_user((ptr),sizeof(*(ptr))))
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|
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/*
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/*
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* This is a silly but good way to make sure that
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* This is a silly but good way to make sure that
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* the __put_user function is indeed always optimized,
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* the __put_user function is indeed always optimized,
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* and that we use the correct sizes..
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* and that we use the correct sizes..
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*/
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*/
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extern int bad_user_access_length(void);
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extern int bad_user_access_length(void);
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|
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#define __ptr(x) ((unsigned long *)(x))
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#define __ptr(x) ((unsigned long *)(x))
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|
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static inline void __put_user(unsigned long x, void * y, int size)
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static inline void __put_user(unsigned long x, void * y, int size)
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{
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{
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switch (size) {
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switch (size) {
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case 1:
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case 1:
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__asm__ ("moveb %0,%1"
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__asm__ ("moveb %0,%1"
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: /* no outputs */
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: /* no outputs */
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:"d" (x),"m" (*__ptr(y)) : "memory");
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:"d" (x),"m" (*__ptr(y)) : "memory");
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break;
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break;
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case 2:
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case 2:
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__asm__ ("movew %0,%1"
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__asm__ ("movew %0,%1"
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: /* no outputs */
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: /* no outputs */
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:"d" (x),"m" (*__ptr(y)) : "memory");
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:"d" (x),"m" (*__ptr(y)) : "memory");
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break;
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break;
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case 4:
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case 4:
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__asm__ ("movel %0,%1"
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__asm__ ("movel %0,%1"
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: /* no outputs */
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: /* no outputs */
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:"d" (x),"m" (*__ptr(y)) : "memory");
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:"d" (x),"m" (*__ptr(y)) : "memory");
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break;
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break;
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default:
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default:
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bad_user_access_length();
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bad_user_access_length();
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}
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}
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}
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}
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static inline unsigned long __get_user(const void * y, int size)
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static inline unsigned long __get_user(const void * y, int size)
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{
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{
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unsigned long result;
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unsigned long result;
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|
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switch (size) {
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switch (size) {
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case 1:
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case 1:
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__asm__ ("moveb %1,%0"
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__asm__ ("moveb %1,%0"
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:"=d" (result)
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:"=d" (result)
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:"m" (*__ptr(y)));
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:"m" (*__ptr(y)));
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return (unsigned char) result;
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return (unsigned char) result;
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case 2:
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case 2:
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__asm__ ("movew %1,%0"
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__asm__ ("movew %1,%0"
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:"=d" (result)
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:"=d" (result)
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:"m" (*__ptr(y)));
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:"m" (*__ptr(y)));
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return (unsigned short) result;
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return (unsigned short) result;
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case 4:
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case 4:
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__asm__ ("movel %1,%0"
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__asm__ ("movel %1,%0"
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:"=d" (result)
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:"=d" (result)
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:"m" (*__ptr(y)));
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:"m" (*__ptr(y)));
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return result;
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return result;
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default:
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default:
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return bad_user_access_length();
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return bad_user_access_length();
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}
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}
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}
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}
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#undef __ptr
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#undef __ptr
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|
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/*
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/*
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* These are deprecated..
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* These are deprecated..
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*
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*
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* Use "put_user()" and "get_user()" with the proper pointer types instead.
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* Use "put_user()" and "get_user()" with the proper pointer types instead.
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*/
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*/
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#define get_fs_byte(addr) __get_user((const unsigned char *)(addr),1)
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#define get_fs_byte(addr) __get_user((const unsigned char *)(addr),1)
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#define get_fs_word(addr) __get_user((const unsigned short *)(addr),2)
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#define get_fs_word(addr) __get_user((const unsigned short *)(addr),2)
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#define get_fs_long(addr) __get_user((const unsigned int *)(addr),4)
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#define get_fs_long(addr) __get_user((const unsigned int *)(addr),4)
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|
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#define put_fs_byte(x,addr) __put_user((x),(unsigned char *)(addr),1)
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#define put_fs_byte(x,addr) __put_user((x),(unsigned char *)(addr),1)
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#define put_fs_word(x,addr) __put_user((x),(unsigned short *)(addr),2)
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#define put_fs_word(x,addr) __put_user((x),(unsigned short *)(addr),2)
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#define put_fs_long(x,addr) __put_user((x),(unsigned int *)(addr),4)
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#define put_fs_long(x,addr) __put_user((x),(unsigned int *)(addr),4)
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|
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#ifdef WE_REALLY_WANT_TO_USE_A_BROKEN_INTERFACE
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#ifdef WE_REALLY_WANT_TO_USE_A_BROKEN_INTERFACE
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|
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static inline unsigned char get_user_byte(const char * addr)
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static inline unsigned char get_user_byte(const char * addr)
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{
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{
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return __get_user(addr,1);
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return __get_user(addr,1);
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}
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}
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static inline unsigned short get_user_word(const short *addr)
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static inline unsigned short get_user_word(const short *addr)
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{
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{
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return __get_user(addr,2);
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return __get_user(addr,2);
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}
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}
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|
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static inline unsigned long get_user_long(const int *addr)
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static inline unsigned long get_user_long(const int *addr)
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{
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{
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return __get_user(addr,4);
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return __get_user(addr,4);
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}
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}
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|
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static inline void put_user_byte(char val,char *addr)
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static inline void put_user_byte(char val,char *addr)
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{
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{
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__put_user(val, addr, 1);
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__put_user(val, addr, 1);
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}
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}
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static inline void put_user_word(short val,short * addr)
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static inline void put_user_word(short val,short * addr)
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{
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{
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__put_user(val, addr, 2);
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__put_user(val, addr, 2);
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}
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}
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static inline void put_user_long(unsigned long val,int * addr)
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static inline void put_user_long(unsigned long val,int * addr)
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{
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{
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__put_user(val, addr, 4);
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__put_user(val, addr, 4);
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}
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}
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|
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#endif
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#endif
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static inline void __generic_memcpy_tofs(void * to, const void * from, unsigned long n)
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static inline void __generic_memcpy_tofs(void * to, const void * from, unsigned long n)
|
{
|
{
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memcpy(to, from, n);
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memcpy(to, from, n);
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/* Gah, idiots! */
|
/* Gah, idiots! */
|
#if 0
|
#if 0
|
unsigned long tmp;
|
unsigned long tmp;
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if (n == 0) return;
|
if (n == 0) return;
|
tmp = n;
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tmp = n;
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n >>= 2;
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n >>= 2;
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if (n != 0)
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if (n != 0)
|
__asm__ __volatile__ ("1:\t"
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__asm__ __volatile__ ("1:\t"
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"movel %1@+,%/d0\n\t"
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"movel %1@+,%/d0\n\t"
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"movel %/d0,%2@+\n\t" /* moves */
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"movel %/d0,%2@+\n\t" /* moves */
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"dbra %0,1b\n\t"
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"dbra %0,1b\n\t"
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"clrw %0\n\t"
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"clrw %0\n\t"
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"subql #1,%0\n\t"
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"subql #1,%0\n\t"
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"bccs 1b\n\t"
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"bccs 1b\n\t"
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: "=d" (n), "=a" (from), "=a" (to)
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: "=d" (n), "=a" (from), "=a" (to)
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: "0" (n-1), "1" (from), "2" (to)
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: "0" (n-1), "1" (from), "2" (to)
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: "d0", "memory");
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: "d0", "memory");
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if (tmp & 2)
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if (tmp & 2)
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__asm__ __volatile__ ("movew %0@+,%/d0\n\t"
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__asm__ __volatile__ ("movew %0@+,%/d0\n\t"
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"movew %/d0,%1@+\n\t" /* moves */
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"movew %/d0,%1@+\n\t" /* moves */
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: "=a" (from), "=a" (to)
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: "=a" (from), "=a" (to)
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: "0" (from), "1" (to)
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: "0" (from), "1" (to)
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: "d0", "memory");
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: "d0", "memory");
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if (tmp & 1)
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if (tmp & 1)
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__asm__ __volatile__ ("moveb %0@,%/d0\n\t"
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__asm__ __volatile__ ("moveb %0@,%/d0\n\t"
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"moveb %/d0,%1@\n\t" /* moves */
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"moveb %/d0,%1@\n\t" /* moves */
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: /* no outputs */
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: /* no outputs */
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: "a" (from), "a" (to)
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: "a" (from), "a" (to)
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: "d0", "memory");
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: "d0", "memory");
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#endif
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#endif
|
}
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}
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|
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static inline void __constant_memcpy_tofs(void * to, const void * from, unsigned long n)
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static inline void __constant_memcpy_tofs(void * to, const void * from, unsigned long n)
|
{
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{
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memcpy(to, from, n);
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memcpy(to, from, n);
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#if 0
|
#if 0
|
switch (n) {
|
switch (n) {
|
case 0:
|
case 0:
|
return;
|
return;
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case 1:
|
case 1:
|
__put_user(*(const char *) from, (char *) to, 1);
|
__put_user(*(const char *) from, (char *) to, 1);
|
return;
|
return;
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case 2:
|
case 2:
|
__put_user(*(const short *) from, (short *) to, 2);
|
__put_user(*(const short *) from, (short *) to, 2);
|
return;
|
return;
|
case 3:
|
case 3:
|
__put_user(*(const short *) from, (short *) to, 2);
|
__put_user(*(const short *) from, (short *) to, 2);
|
__put_user(*(2+(const char *) from), 2+(char *) to, 1);
|
__put_user(*(2+(const char *) from), 2+(char *) to, 1);
|
return;
|
return;
|
case 4:
|
case 4:
|
__put_user(*(const int *) from, (int *) to, 4);
|
__put_user(*(const int *) from, (int *) to, 4);
|
return;
|
return;
|
case 8:
|
case 8:
|
__put_user(*(const int *) from, (int *) to, 4);
|
__put_user(*(const int *) from, (int *) to, 4);
|
__put_user(*(1+(const int *) from), 1+(int *) to, 4);
|
__put_user(*(1+(const int *) from), 1+(int *) to, 4);
|
return;
|
return;
|
case 12:
|
case 12:
|
__put_user(*(const int *) from, (int *) to, 4);
|
__put_user(*(const int *) from, (int *) to, 4);
|
__put_user(*(1+(const int *) from), 1+(int *) to, 4);
|
__put_user(*(1+(const int *) from), 1+(int *) to, 4);
|
__put_user(*(2+(const int *) from), 2+(int *) to, 4);
|
__put_user(*(2+(const int *) from), 2+(int *) to, 4);
|
return;
|
return;
|
case 16:
|
case 16:
|
__put_user(*(const int *) from, (int *) to, 4);
|
__put_user(*(const int *) from, (int *) to, 4);
|
__put_user(*(1+(const int *) from), 1+(int *) to, 4);
|
__put_user(*(1+(const int *) from), 1+(int *) to, 4);
|
__put_user(*(2+(const int *) from), 2+(int *) to, 4);
|
__put_user(*(2+(const int *) from), 2+(int *) to, 4);
|
__put_user(*(3+(const int *) from), 3+(int *) to, 4);
|
__put_user(*(3+(const int *) from), 3+(int *) to, 4);
|
return;
|
return;
|
}
|
}
|
|
|
/* moves */
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/* moves */
|
#define COMMON(x) \
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#define COMMON(x) \
|
__asm__ __volatile__ ("1:\n\t" \
|
__asm__ __volatile__ ("1:\n\t" \
|
"movel %1@+,%/d0\n\t" \
|
"movel %1@+,%/d0\n\t" \
|
"movel %/d0,%2@+\n\t" \
|
"movel %/d0,%2@+\n\t" \
|
"dbra %0,1b\n\t" \
|
"dbra %0,1b\n\t" \
|
"clrw %0\n\t" \
|
"clrw %0\n\t" \
|
"subql #1,%0\n\t" \
|
"subql #1,%0\n\t" \
|
"bccs 1b\n\t" \
|
"bccs 1b\n\t" \
|
x \
|
x \
|
: "=d" (n), "=a" (from), "=a" (to) \
|
: "=d" (n), "=a" (from), "=a" (to) \
|
: "1" (from), "2" (to), "0" (n/4-1) \
|
: "1" (from), "2" (to), "0" (n/4-1) \
|
: "d0", "memory");
|
: "d0", "memory");
|
|
|
switch (n % 4) {
|
switch (n % 4) {
|
case 0:
|
case 0:
|
COMMON("");
|
COMMON("");
|
return;
|
return;
|
case 1:
|
case 1:
|
COMMON("moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
COMMON("moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
return;
|
return;
|
case 2:
|
case 2:
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+"); /* moves */
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+"); /* moves */
|
return;
|
return;
|
case 3:
|
case 3:
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+\n\t" /* moves */
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+\n\t" /* moves */
|
"moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
"moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
return;
|
return;
|
}
|
}
|
#undef COMMON
|
#undef COMMON
|
#endif
|
#endif
|
}
|
}
|
|
|
static inline void __generic_memcpy_fromfs(void * to, const void * from, unsigned long n)
|
static inline void __generic_memcpy_fromfs(void * to, const void * from, unsigned long n)
|
{
|
{
|
memcpy(to, from, n);
|
memcpy(to, from, n);
|
/* Gah, idiots! */
|
/* Gah, idiots! */
|
#if 0
|
#if 0
|
unsigned long tmp;
|
unsigned long tmp;
|
if (n == 0) return;
|
if (n == 0) return;
|
tmp = n;
|
tmp = n;
|
n >>= 2;
|
n >>= 2;
|
if (n != 0)
|
if (n != 0)
|
__asm__ __volatile__ ("1:\t"
|
__asm__ __volatile__ ("1:\t"
|
"movel %1@+,%/d0\n\t" /* moves */
|
"movel %1@+,%/d0\n\t" /* moves */
|
"movel %/d0,%2@+\n\t"
|
"movel %/d0,%2@+\n\t"
|
"dbra %0,1b\n\t"
|
"dbra %0,1b\n\t"
|
"clrw %0\n\t"
|
"clrw %0\n\t"
|
"subql #1,%0\n\t"
|
"subql #1,%0\n\t"
|
"bccs 1b\n\t"
|
"bccs 1b\n\t"
|
: "=d" (n), "=a" (from), "=a" (to)
|
: "=d" (n), "=a" (from), "=a" (to)
|
: "0" (n-1), "1" (from), "2" (to)
|
: "0" (n-1), "1" (from), "2" (to)
|
: "d0", "memory");
|
: "d0", "memory");
|
if (tmp & 2)
|
if (tmp & 2)
|
__asm__ __volatile__ ("movew %0@+,%/d0\n\t" /* moves */
|
__asm__ __volatile__ ("movew %0@+,%/d0\n\t" /* moves */
|
"movew %/d0,%1@+\n\t"
|
"movew %/d0,%1@+\n\t"
|
: "=a" (from), "=a" (to)
|
: "=a" (from), "=a" (to)
|
: "0" (from), "1" (to)
|
: "0" (from), "1" (to)
|
: "d0", "memory");
|
: "d0", "memory");
|
if (tmp & 1)
|
if (tmp & 1)
|
__asm__ __volatile__ ("moveb %0@,%/d0\n\t" /* moves */
|
__asm__ __volatile__ ("moveb %0@,%/d0\n\t" /* moves */
|
"moveb %/d0,%1@\n\t"
|
"moveb %/d0,%1@\n\t"
|
: /* no outputs */
|
: /* no outputs */
|
: "a" (from), "a" (to)
|
: "a" (from), "a" (to)
|
: "d0", "memory");
|
: "d0", "memory");
|
#endif
|
#endif
|
}
|
}
|
|
|
static inline void __constant_memcpy_fromfs(void * to, const void * from, unsigned long n)
|
static inline void __constant_memcpy_fromfs(void * to, const void * from, unsigned long n)
|
{
|
{
|
memcpy(to, from, n);
|
memcpy(to, from, n);
|
#if 0
|
#if 0
|
switch (n) {
|
switch (n) {
|
case 0:
|
case 0:
|
return;
|
return;
|
case 1:
|
case 1:
|
*(char *)to = __get_user((const char *) from, 1);
|
*(char *)to = __get_user((const char *) from, 1);
|
return;
|
return;
|
case 2:
|
case 2:
|
*(short *)to = __get_user((const short *) from, 2);
|
*(short *)to = __get_user((const short *) from, 2);
|
return;
|
return;
|
case 3:
|
case 3:
|
*(short *) to = __get_user((const short *) from, 2);
|
*(short *) to = __get_user((const short *) from, 2);
|
*((char *) to + 2) = __get_user(2+(const char *) from, 1);
|
*((char *) to + 2) = __get_user(2+(const char *) from, 1);
|
return;
|
return;
|
case 4:
|
case 4:
|
*(int *) to = __get_user((const int *) from, 4);
|
*(int *) to = __get_user((const int *) from, 4);
|
return;
|
return;
|
case 8:
|
case 8:
|
*(int *) to = __get_user((const int *) from, 4);
|
*(int *) to = __get_user((const int *) from, 4);
|
*(1+(int *) to) = __get_user(1+(const int *) from, 4);
|
*(1+(int *) to) = __get_user(1+(const int *) from, 4);
|
return;
|
return;
|
case 12:
|
case 12:
|
*(int *) to = __get_user((const int *) from, 4);
|
*(int *) to = __get_user((const int *) from, 4);
|
*(1+(int *) to) = __get_user(1+(const int *) from, 4);
|
*(1+(int *) to) = __get_user(1+(const int *) from, 4);
|
*(2+(int *) to) = __get_user(2+(const int *) from, 4);
|
*(2+(int *) to) = __get_user(2+(const int *) from, 4);
|
return;
|
return;
|
case 16:
|
case 16:
|
*(int *) to = __get_user((const int *) from, 4);
|
*(int *) to = __get_user((const int *) from, 4);
|
*(1+(int *) to) = __get_user(1+(const int *) from, 4);
|
*(1+(int *) to) = __get_user(1+(const int *) from, 4);
|
*(2+(int *) to) = __get_user(2+(const int *) from, 4);
|
*(2+(int *) to) = __get_user(2+(const int *) from, 4);
|
*(3+(int *) to) = __get_user(3+(const int *) from, 4);
|
*(3+(int *) to) = __get_user(3+(const int *) from, 4);
|
return;
|
return;
|
}
|
}
|
/*moves*/
|
/*moves*/
|
#define COMMON(x) \
|
#define COMMON(x) \
|
__asm__ __volatile__ ("1:\n\t" \
|
__asm__ __volatile__ ("1:\n\t" \
|
"movel %1@+,%/d0\n\t" \
|
"movel %1@+,%/d0\n\t" \
|
"movel %/d0,%2@+\n\t" \
|
"movel %/d0,%2@+\n\t" \
|
"dbra %0,1b\n\t" \
|
"dbra %0,1b\n\t" \
|
"clrw %0\n\t" \
|
"clrw %0\n\t" \
|
"subql #1,%0\n\t" \
|
"subql #1,%0\n\t" \
|
"bccs 1b\n\t" \
|
"bccs 1b\n\t" \
|
x \
|
x \
|
: "=d" (n), "=a" (from), "=a" (to) \
|
: "=d" (n), "=a" (from), "=a" (to) \
|
: "1" (from), "2" (to), "0" (n/4-1) \
|
: "1" (from), "2" (to), "0" (n/4-1) \
|
: "d0", "memory");
|
: "d0", "memory");
|
|
|
switch (n % 4) {
|
switch (n % 4) {
|
case 0:
|
case 0:
|
COMMON("");
|
COMMON("");
|
return;
|
return;
|
case 1:
|
case 1:
|
COMMON("moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
COMMON("moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
return;
|
return;
|
case 2:
|
case 2:
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+"); /* moves */
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+"); /* moves */
|
return;
|
return;
|
case 3:
|
case 3:
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+\n\t" /* moves */
|
COMMON("movew %1@+,%/d0; movew %/d0,%2@+\n\t" /* moves */
|
"moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
"moveb %1@+,%/d0; moveb %/d0,%2@+"); /* moves */
|
return;
|
return;
|
}
|
}
|
#undef COMMON
|
#undef COMMON
|
#endif
|
#endif
|
}
|
}
|
|
|
#define memcpy_fromfs(to, from, n) \
|
#define memcpy_fromfs(to, from, n) \
|
(__builtin_constant_p(n) ? \
|
(__builtin_constant_p(n) ? \
|
__constant_memcpy_fromfs((to),(from),(n)) : \
|
__constant_memcpy_fromfs((to),(from),(n)) : \
|
__generic_memcpy_fromfs((to),(from),(n)))
|
__generic_memcpy_fromfs((to),(from),(n)))
|
|
|
#define memcpy_tofs(to, from, n) \
|
#define memcpy_tofs(to, from, n) \
|
(__builtin_constant_p(n) ? \
|
(__builtin_constant_p(n) ? \
|
__constant_memcpy_tofs((to),(from),(n)) : \
|
__constant_memcpy_tofs((to),(from),(n)) : \
|
__generic_memcpy_tofs((to),(from),(n)))
|
__generic_memcpy_tofs((to),(from),(n)))
|
|
|
/*
|
/*
|
* Get/set the SFC/DFC registers for MOVES instructions
|
* Get/set the SFC/DFC registers for MOVES instructions
|
*/
|
*/
|
|
|
static inline unsigned long get_fs(void)
|
static inline unsigned long get_fs(void)
|
{
|
{
|
#ifdef NO_MM
|
#ifdef NO_MM
|
return USER_DS;
|
return USER_DS;
|
#else
|
#else
|
unsigned long _v;
|
unsigned long _v;
|
__asm__ ("movec %/dfc,%0":"=r" (_v):);
|
__asm__ ("movec %/dfc,%0":"=r" (_v):);
|
|
|
return _v;
|
return _v;
|
#endif
|
#endif
|
}
|
}
|
|
|
static inline unsigned long get_ds(void)
|
static inline unsigned long get_ds(void)
|
{
|
{
|
/* return the supervisor data space code */
|
/* return the supervisor data space code */
|
return KERNEL_DS;
|
return KERNEL_DS;
|
}
|
}
|
|
|
static inline void set_fs(unsigned long val)
|
static inline void set_fs(unsigned long val)
|
{
|
{
|
#ifndef NO_MM
|
#ifndef NO_MM
|
__asm__ __volatile__ ("movec %0,%/sfc\n\t"
|
__asm__ __volatile__ ("movec %0,%/sfc\n\t"
|
"movec %0,%/dfc\n\t"
|
"movec %0,%/dfc\n\t"
|
: /* no outputs */ : "r" (val) : "memory");
|
: /* no outputs */ : "r" (val) : "memory");
|
#endif
|
#endif
|
}
|
}
|
|
|
#endif /* __ASSEMBLY__ */
|
#endif /* __ASSEMBLY__ */
|
|
|
#endif /* _M68K_SEGMENT_H */
|
#endif /* _M68K_SEGMENT_H */
|
|
|
