-static inline unsigned long
-__generic_copy_to_user(void *to, const void *from, unsigned long n)
-{
- unsigned long tmp;
- __asm__ __volatile__
- (" tstl %2\n"
- " jeq 3f\n"
- "1: movel (%1)+,%3\n"
- "22:movesl %3,(%0)+\n"
- "2: subql #1,%2\n"
- " jne 1b\n"
- "3: movel %4,%2\n"
- " bclr #1,%2\n"
- " jeq 4f\n"
- " movew (%1)+,%3\n"
- "24:movesw %3,(%0)+\n"
- "4: bclr #0,%2\n"
- " jeq 5f\n"
- " moveb (%1)+,%3\n"
- "25:movesb %3,(%0)+\n"
- "5:\n"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "60:addql #1,%2\n"
- "6: lsll #2,%2\n"
- " addl %4,%2\n"
- " jra 5b\n"
- "7: addql #2,%2\n"
- " jra 5b\n"
- "8: addql #1,%2\n"
- " jra 5b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,60b\n"
- " .long 22b,6b\n"
- " .long 2b,6b\n"
- " .long 24b,7b\n"
- " .long 3b,60b\n"
- " .long 4b,7b\n"
- " .long 25b,8b\n"
- " .long 5b,8b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n), "=&d"(tmp)
- : "r"(n & 3), "0"(to), "1"(from), "2"(n / 4)
- : "memory");
- return n;
-}
-
-#define __copy_from_user_big(to, from, n, fixup, copy) \
- __asm__ __volatile__ \
- ("10: movesl (%1)+,%%d0\n" \
- " movel %%d0,(%0)+\n" \
- " subql #1,%2\n" \
- " jne 10b\n" \
- ".section .fixup,\"ax\"\n" \
- " .even\n" \
- "11: movel %2,%%d0\n" \
- "13: clrl (%0)+\n" \
- " subql #1,%%d0\n" \
- " jne 13b\n" \
- " lsll #2,%2\n" \
- fixup "\n" \
- " jra 12f\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 10b,11b\n" \
- ".previous\n" \
- copy "\n" \
- "12:" \
- : "=a"(to), "=a"(from), "=d"(n) \
- : "0"(to), "1"(from), "2"(n/4) \
- : "d0", "memory")
-
-static inline unsigned long
-__constant_copy_from_user(void *to, const void *from, unsigned long n)
-{
- switch (n) {
- case 0:
- break;
- case 1:
- __asm__ __volatile__
- ("1: movesb (%1)+,%%d0\n"
- " moveb %%d0,(%0)+\n"
- "2:\n"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "3: addql #1,%2\n"
- " clrb (%0)+\n"
- " jra 2b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,3b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n)
- : "0"(to), "1"(from), "2"(0)
- : "d0", "memory");
- break;
- case 2:
- __asm__ __volatile__
- ("1: movesw (%1)+,%%d0\n"
- " movew %%d0,(%0)+\n"
- "2:\n"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "3: addql #2,%2\n"
- " clrw (%0)+\n"
- " jra 2b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,3b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n)
- : "0"(to), "1"(from), "2"(0)
- : "d0", "memory");
- break;
- case 3:
- __asm__ __volatile__
- ("1: movesw (%1)+,%%d0\n"
- " movew %%d0,(%0)+\n"
- "2: movesb (%1)+,%%d0\n"
- " moveb %%d0,(%0)+\n"
- "3:"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "4: addql #2,%2\n"
- " clrw (%0)+\n"
- "5: addql #1,%2\n"
- " clrb (%0)+\n"
- " jra 3b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,4b\n"
- " .long 2b,5b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n)
- : "0"(to), "1"(from), "2"(0)
- : "d0", "memory");
- break;
- case 4:
- __asm__ __volatile__
- ("1: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "2:"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "3: addql #4,%2\n"
- " clrl (%0)+\n"
- " jra 2b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,3b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n)
- : "0"(to), "1"(from), "2"(0)
- : "d0", "memory");
- break;
- case 8:
- __asm__ __volatile__
- ("1: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "2: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "3:"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "4: addql #4,%2\n"
- " clrl (%0)+\n"
- "5: addql #4,%2\n"
- " clrl (%0)+\n"
- " jra 3b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,4b\n"
- " .long 2b,5b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n)
- : "0"(to), "1"(from), "2"(0)
- : "d0", "memory");
- break;
- case 12:
- __asm__ __volatile__
- ("1: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "2: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "3: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "4:"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "5: addql #4,%2\n"
- " clrl (%0)+\n"
- "6: addql #4,%2\n"
- " clrl (%0)+\n"
- "7: addql #4,%2\n"
- " clrl (%0)+\n"
- " jra 4b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,5b\n"
- " .long 2b,6b\n"
- " .long 3b,7b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n)
- : "0"(to), "1"(from), "2"(0)
- : "d0", "memory");
- break;
- case 16:
- __asm__ __volatile__
- ("1: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "2: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "3: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "4: movesl (%1)+,%%d0\n"
- " movel %%d0,(%0)+\n"
- "5:"
- ".section .fixup,\"ax\"\n"
- " .even\n"
- "6: addql #4,%2\n"
- " clrl (%0)+\n"
- "7: addql #4,%2\n"
- " clrl (%0)+\n"
- "8: addql #4,%2\n"
- " clrl (%0)+\n"
- "9: addql #4,%2\n"
- " clrl (%0)+\n"
- " jra 5b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 1b,6b\n"
- " .long 2b,7b\n"
- " .long 3b,8b\n"
- " .long 4b,9b\n"
- ".previous"
- : "=a"(to), "=a"(from), "=d"(n)
- : "0"(to), "1"(from), "2"(0)
- : "d0", "memory");
- break;
- default:
- switch (n & 3) {
- case 0:
- __copy_from_user_big(to, from, n, "", "");
- break;