summaryrefslogtreecommitdiff
path: root/arch/cris/include/arch-v32/arch/uaccess.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/cris/include/arch-v32/arch/uaccess.h')
-rw-r--r--arch/cris/include/arch-v32/arch/uaccess.h730
1 files changed, 0 insertions, 730 deletions
diff --git a/arch/cris/include/arch-v32/arch/uaccess.h b/arch/cris/include/arch-v32/arch/uaccess.h
deleted file mode 100644
index 214bd26efcd9..000000000000
--- a/arch/cris/include/arch-v32/arch/uaccess.h
+++ /dev/null
@@ -1,730 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Authors: Hans-Peter Nilsson (hp@axis.com)
- *
- */
-#ifndef _CRIS_ARCH_UACCESS_H
-#define _CRIS_ARCH_UACCESS_H
-
-/*
- * We don't tell gcc that we are accessing memory, but this is OK
- * because we do not write to any memory gcc knows about, so there
- * are no aliasing issues.
- *
- * Note that PC at a fault is the address *at* the faulting
- * instruction for CRISv32.
- */
-#define __put_user_asm(x, addr, err, op) \
- __asm__ __volatile__( \
- "2: "op" %1,[%2]\n" \
- "4:\n" \
- " .section .fixup,\"ax\"\n" \
- "3: move.d %3,%0\n" \
- " jump 4b\n" \
- " nop\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .dword 2b,3b\n" \
- " .previous\n" \
- : "=r" (err) \
- : "r" (x), "r" (addr), "g" (-EFAULT), "0" (err))
-
-#define __put_user_asm_64(x, addr, err) do { \
- int dummy_for_put_user_asm_64_; \
- __asm__ __volatile__( \
- "2: move.d %M2,[%1+]\n" \
- "4: move.d %H2,[%1]\n" \
- "5:\n" \
- " .section .fixup,\"ax\"\n" \
- "3: move.d %4,%0\n" \
- " jump 5b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .dword 2b,3b\n" \
- " .dword 4b,3b\n" \
- " .previous\n" \
- : "=r" (err), "=b" (dummy_for_put_user_asm_64_) \
- : "r" (x), "1" (addr), "g" (-EFAULT), \
- "0" (err)); \
- } while (0)
-
-/* See comment before __put_user_asm. */
-
-#define __get_user_asm(x, addr, err, op) \
- __asm__ __volatile__( \
- "2: "op" [%2],%1\n" \
- "4:\n" \
- " .section .fixup,\"ax\"\n" \
- "3: move.d %3,%0\n" \
- " jump 4b\n" \
- " moveq 0,%1\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .dword 2b,3b\n" \
- " .previous\n" \
- : "=r" (err), "=r" (x) \
- : "r" (addr), "g" (-EFAULT), "0" (err))
-
-#define __get_user_asm_64(x, addr, err) do { \
- int dummy_for_get_user_asm_64_; \
- __asm__ __volatile__( \
- "2: move.d [%2+],%M1\n" \
- "4: move.d [%2],%H1\n" \
- "5:\n" \
- " .section .fixup,\"ax\"\n" \
- "3: move.d %4,%0\n" \
- " jump 5b\n" \
- " moveq 0,%1\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .dword 2b,3b\n" \
- " .dword 4b,3b\n" \
- " .previous\n" \
- : "=r" (err), "=r" (x), \
- "=b" (dummy_for_get_user_asm_64_) \
- : "2" (addr), "g" (-EFAULT), "0" (err));\
- } while (0)
-
-/*
- * Copy a null terminated string from userspace.
- *
- * Must return:
- * -EFAULT for an exception
- * count if we hit the buffer limit
- * bytes copied if we hit a null byte
- * (without the null byte)
- */
-static inline long
-__do_strncpy_from_user(char *dst, const char *src, long count)
-{
- long res;
-
- if (count == 0)
- return 0;
-
- /*
- * Currently, in 2.4.0-test9, most ports use a simple byte-copy loop.
- * So do we.
- *
- * This code is deduced from:
- *
- * char tmp2;
- * long tmp1, tmp3;
- * tmp1 = count;
- * while ((*dst++ = (tmp2 = *src++)) != 0
- * && --tmp1)
- * ;
- *
- * res = count - tmp1;
- *
- * with tweaks.
- */
-
- __asm__ __volatile__ (
- " move.d %3,%0\n"
- "5: move.b [%2+],$acr\n"
- "1: beq 6f\n"
- " move.b $acr,[%1+]\n"
-
- " subq 1,%0\n"
- "2: bne 1b\n"
- " move.b [%2+],$acr\n"
-
- "6: sub.d %3,%0\n"
- " neg.d %0,%0\n"
- "3:\n"
- " .section .fixup,\"ax\"\n"
- "4: move.d %7,%0\n"
- " jump 3b\n"
- " nop\n"
-
- /* The address for a fault at the first move is trivial.
- The address for a fault at the second move is that of
- the preceding branch insn, since the move insn is in
- its delay-slot. Just so you don't get confused... */
- " .previous\n"
- " .section __ex_table,\"a\"\n"
- " .dword 5b,4b\n"
- " .dword 2b,4b\n"
- " .previous"
- : "=r" (res), "=b" (dst), "=b" (src), "=r" (count)
- : "3" (count), "1" (dst), "2" (src), "g" (-EFAULT)
- : "acr");
-
- return res;
-}
-
-/* A few copy asms to build up the more complex ones from.
-
- Note again, a post-increment is performed regardless of whether a bus
- fault occurred in that instruction, and PC for a faulted insn is the
- address for the insn, or for the preceding branch when in a delay-slot. */
-
-#define __asm_copy_user_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm__ __volatile__ ( \
- COPY \
- "1:\n" \
- " .section .fixup,\"ax\"\n" \
- FIXUP \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- TENTRY \
- " .previous\n" \
- : "=b" (to), "=b" (from), "=r" (ret) \
- : "0" (to), "1" (from), "2" (ret) \
- : "acr", "memory")
-
-#define __asm_copy_from_user_1(to, from, ret) \
- __asm_copy_user_cont(to, from, ret, \
- "2: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "3: addq 1,%2\n" \
- " jump 1b\n", \
- " .dword 2b,3b\n")
-
-#define __asm_copy_from_user_2x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_user_cont(to, from, ret, \
- COPY \
- "2: move.w [%1+],$acr\n" \
- " move.w $acr,[%0+]\n", \
- FIXUP \
- "3: addq 2,%2\n" \
- " jump 1b\n", \
- TENTRY \
- " .dword 2b,3b\n")
-
-#define __asm_copy_from_user_2(to, from, ret) \
- __asm_copy_from_user_2x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_3(to, from, ret) \
- __asm_copy_from_user_2x_cont(to, from, ret, \
- "4: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "5: addq 1,%2\n", \
- " .dword 4b,5b\n")
-
-#define __asm_copy_from_user_4x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_user_cont(to, from, ret, \
- COPY \
- "2: move.d [%1+],$acr\n" \
- " move.d $acr,[%0+]\n", \
- FIXUP \
- "3: addq 4,%2\n" \
- " jump 1b\n", \
- TENTRY \
- " .dword 2b,3b\n")
-
-#define __asm_copy_from_user_4(to, from, ret) \
- __asm_copy_from_user_4x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_5(to, from, ret) \
- __asm_copy_from_user_4x_cont(to, from, ret, \
- "4: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "5: addq 1,%2\n", \
- " .dword 4b,5b\n")
-
-#define __asm_copy_from_user_6x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_4x_cont(to, from, ret, \
- COPY \
- "4: move.w [%1+],$acr\n" \
- " move.w $acr,[%0+]\n", \
- FIXUP \
- "5: addq 2,%2\n", \
- TENTRY \
- " .dword 4b,5b\n")
-
-#define __asm_copy_from_user_6(to, from, ret) \
- __asm_copy_from_user_6x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_7(to, from, ret) \
- __asm_copy_from_user_6x_cont(to, from, ret, \
- "6: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "7: addq 1,%2\n", \
- " .dword 6b,7b\n")
-
-#define __asm_copy_from_user_8x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_4x_cont(to, from, ret, \
- COPY \
- "4: move.d [%1+],$acr\n" \
- " move.d $acr,[%0+]\n", \
- FIXUP \
- "5: addq 4,%2\n", \
- TENTRY \
- " .dword 4b,5b\n")
-
-#define __asm_copy_from_user_8(to, from, ret) \
- __asm_copy_from_user_8x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_9(to, from, ret) \
- __asm_copy_from_user_8x_cont(to, from, ret, \
- "6: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "7: addq 1,%2\n", \
- " .dword 6b,7b\n")
-
-#define __asm_copy_from_user_10x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_8x_cont(to, from, ret, \
- COPY \
- "6: move.w [%1+],$acr\n" \
- " move.w $acr,[%0+]\n", \
- FIXUP \
- "7: addq 2,%2\n", \
- TENTRY \
- " .dword 6b,7b\n")
-
-#define __asm_copy_from_user_10(to, from, ret) \
- __asm_copy_from_user_10x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_11(to, from, ret) \
- __asm_copy_from_user_10x_cont(to, from, ret, \
- "8: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "9: addq 1,%2\n", \
- " .dword 8b,9b\n")
-
-#define __asm_copy_from_user_12x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_8x_cont(to, from, ret, \
- COPY \
- "6: move.d [%1+],$acr\n" \
- " move.d $acr,[%0+]\n", \
- FIXUP \
- "7: addq 4,%2\n", \
- TENTRY \
- " .dword 6b,7b\n")
-
-#define __asm_copy_from_user_12(to, from, ret) \
- __asm_copy_from_user_12x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_13(to, from, ret) \
- __asm_copy_from_user_12x_cont(to, from, ret, \
- "8: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "9: addq 1,%2\n", \
- " .dword 8b,9b\n")
-
-#define __asm_copy_from_user_14x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_12x_cont(to, from, ret, \
- COPY \
- "8: move.w [%1+],$acr\n" \
- " move.w $acr,[%0+]\n", \
- FIXUP \
- "9: addq 2,%2\n", \
- TENTRY \
- " .dword 8b,9b\n")
-
-#define __asm_copy_from_user_14(to, from, ret) \
- __asm_copy_from_user_14x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_15(to, from, ret) \
- __asm_copy_from_user_14x_cont(to, from, ret, \
- "10: move.b [%1+],$acr\n" \
- " move.b $acr,[%0+]\n", \
- "11: addq 1,%2\n", \
- " .dword 10b,11b\n")
-
-#define __asm_copy_from_user_16x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_12x_cont(to, from, ret, \
- COPY \
- "8: move.d [%1+],$acr\n" \
- " move.d $acr,[%0+]\n", \
- FIXUP \
- "9: addq 4,%2\n", \
- TENTRY \
- " .dword 8b,9b\n")
-
-#define __asm_copy_from_user_16(to, from, ret) \
- __asm_copy_from_user_16x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_20x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_16x_cont(to, from, ret, \
- COPY \
- "10: move.d [%1+],$acr\n" \
- " move.d $acr,[%0+]\n", \
- FIXUP \
- "11: addq 4,%2\n", \
- TENTRY \
- " .dword 10b,11b\n")
-
-#define __asm_copy_from_user_20(to, from, ret) \
- __asm_copy_from_user_20x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_from_user_24x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_from_user_20x_cont(to, from, ret, \
- COPY \
- "12: move.d [%1+],$acr\n" \
- " move.d $acr,[%0+]\n", \
- FIXUP \
- "13: addq 4,%2\n", \
- TENTRY \
- " .dword 12b,13b\n")
-
-#define __asm_copy_from_user_24(to, from, ret) \
- __asm_copy_from_user_24x_cont(to, from, ret, "", "", "")
-
-/* And now, the to-user ones. */
-
-#define __asm_copy_to_user_1(to, from, ret) \
- __asm_copy_user_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "2: move.b $acr,[%0+]\n", \
- "3: jump 1b\n" \
- " addq 1,%2\n", \
- " .dword 2b,3b\n")
-
-#define __asm_copy_to_user_2x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_user_cont(to, from, ret, \
- COPY \
- " move.w [%1+],$acr\n" \
- "2: move.w $acr,[%0+]\n", \
- FIXUP \
- "3: jump 1b\n" \
- " addq 2,%2\n", \
- TENTRY \
- " .dword 2b,3b\n")
-
-#define __asm_copy_to_user_2(to, from, ret) \
- __asm_copy_to_user_2x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_3(to, from, ret) \
- __asm_copy_to_user_2x_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "4: move.b $acr,[%0+]\n", \
- "5: addq 1,%2\n", \
- " .dword 4b,5b\n")
-
-#define __asm_copy_to_user_4x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_user_cont(to, from, ret, \
- COPY \
- " move.d [%1+],$acr\n" \
- "2: move.d $acr,[%0+]\n", \
- FIXUP \
- "3: jump 1b\n" \
- " addq 4,%2\n", \
- TENTRY \
- " .dword 2b,3b\n")
-
-#define __asm_copy_to_user_4(to, from, ret) \
- __asm_copy_to_user_4x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_5(to, from, ret) \
- __asm_copy_to_user_4x_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "4: move.b $acr,[%0+]\n", \
- "5: addq 1,%2\n", \
- " .dword 4b,5b\n")
-
-#define __asm_copy_to_user_6x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_4x_cont(to, from, ret, \
- COPY \
- " move.w [%1+],$acr\n" \
- "4: move.w $acr,[%0+]\n", \
- FIXUP \
- "5: addq 2,%2\n", \
- TENTRY \
- " .dword 4b,5b\n")
-
-#define __asm_copy_to_user_6(to, from, ret) \
- __asm_copy_to_user_6x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_7(to, from, ret) \
- __asm_copy_to_user_6x_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "6: move.b $acr,[%0+]\n", \
- "7: addq 1,%2\n", \
- " .dword 6b,7b\n")
-
-#define __asm_copy_to_user_8x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_4x_cont(to, from, ret, \
- COPY \
- " move.d [%1+],$acr\n" \
- "4: move.d $acr,[%0+]\n", \
- FIXUP \
- "5: addq 4,%2\n", \
- TENTRY \
- " .dword 4b,5b\n")
-
-#define __asm_copy_to_user_8(to, from, ret) \
- __asm_copy_to_user_8x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_9(to, from, ret) \
- __asm_copy_to_user_8x_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "6: move.b $acr,[%0+]\n", \
- "7: addq 1,%2\n", \
- " .dword 6b,7b\n")
-
-#define __asm_copy_to_user_10x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_8x_cont(to, from, ret, \
- COPY \
- " move.w [%1+],$acr\n" \
- "6: move.w $acr,[%0+]\n", \
- FIXUP \
- "7: addq 2,%2\n", \
- TENTRY \
- " .dword 6b,7b\n")
-
-#define __asm_copy_to_user_10(to, from, ret) \
- __asm_copy_to_user_10x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_11(to, from, ret) \
- __asm_copy_to_user_10x_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "8: move.b $acr,[%0+]\n", \
- "9: addq 1,%2\n", \
- " .dword 8b,9b\n")
-
-#define __asm_copy_to_user_12x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_8x_cont(to, from, ret, \
- COPY \
- " move.d [%1+],$acr\n" \
- "6: move.d $acr,[%0+]\n", \
- FIXUP \
- "7: addq 4,%2\n", \
- TENTRY \
- " .dword 6b,7b\n")
-
-#define __asm_copy_to_user_12(to, from, ret) \
- __asm_copy_to_user_12x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_13(to, from, ret) \
- __asm_copy_to_user_12x_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "8: move.b $acr,[%0+]\n", \
- "9: addq 1,%2\n", \
- " .dword 8b,9b\n")
-
-#define __asm_copy_to_user_14x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_12x_cont(to, from, ret, \
- COPY \
- " move.w [%1+],$acr\n" \
- "8: move.w $acr,[%0+]\n", \
- FIXUP \
- "9: addq 2,%2\n", \
- TENTRY \
- " .dword 8b,9b\n")
-
-#define __asm_copy_to_user_14(to, from, ret) \
- __asm_copy_to_user_14x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_15(to, from, ret) \
- __asm_copy_to_user_14x_cont(to, from, ret, \
- " move.b [%1+],$acr\n" \
- "10: move.b $acr,[%0+]\n", \
- "11: addq 1,%2\n", \
- " .dword 10b,11b\n")
-
-#define __asm_copy_to_user_16x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_12x_cont(to, from, ret, \
- COPY \
- " move.d [%1+],$acr\n" \
- "8: move.d $acr,[%0+]\n", \
- FIXUP \
- "9: addq 4,%2\n", \
- TENTRY \
- " .dword 8b,9b\n")
-
-#define __asm_copy_to_user_16(to, from, ret) \
- __asm_copy_to_user_16x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_20x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_16x_cont(to, from, ret, \
- COPY \
- " move.d [%1+],$acr\n" \
- "10: move.d $acr,[%0+]\n", \
- FIXUP \
- "11: addq 4,%2\n", \
- TENTRY \
- " .dword 10b,11b\n")
-
-#define __asm_copy_to_user_20(to, from, ret) \
- __asm_copy_to_user_20x_cont(to, from, ret, "", "", "")
-
-#define __asm_copy_to_user_24x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
- __asm_copy_to_user_20x_cont(to, from, ret, \
- COPY \
- " move.d [%1+],$acr\n" \
- "12: move.d $acr,[%0+]\n", \
- FIXUP \
- "13: addq 4,%2\n", \
- TENTRY \
- " .dword 12b,13b\n")
-
-#define __asm_copy_to_user_24(to, from, ret) \
- __asm_copy_to_user_24x_cont(to, from, ret, "", "", "")
-
-/* Define a few clearing asms with exception handlers. */
-
-/* This frame-asm is like the __asm_copy_user_cont one, but has one less
- input. */
-
-#define __asm_clear(to, ret, CLEAR, FIXUP, TENTRY) \
- __asm__ __volatile__ ( \
- CLEAR \
- "1:\n" \
- " .section .fixup,\"ax\"\n" \
- FIXUP \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- TENTRY \
- " .previous" \
- : "=b" (to), "=r" (ret) \
- : "0" (to), "1" (ret) \
- : "memory")
-
-#define __asm_clear_1(to, ret) \
- __asm_clear(to, ret, \
- "2: clear.b [%0+]\n", \
- "3: jump 1b\n" \
- " addq 1,%1\n", \
- " .dword 2b,3b\n")
-
-#define __asm_clear_2(to, ret) \
- __asm_clear(to, ret, \
- "2: clear.w [%0+]\n", \
- "3: jump 1b\n" \
- " addq 2,%1\n", \
- " .dword 2b,3b\n")
-
-#define __asm_clear_3(to, ret) \
- __asm_clear(to, ret, \
- "2: clear.w [%0+]\n" \
- "3: clear.b [%0+]\n", \
- "4: addq 2,%1\n" \
- "5: jump 1b\n" \
- " addq 1,%1\n", \
- " .dword 2b,4b\n" \
- " .dword 3b,5b\n")
-
-#define __asm_clear_4x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
- __asm_clear(to, ret, \
- CLEAR \
- "2: clear.d [%0+]\n", \
- FIXUP \
- "3: jump 1b\n" \
- " addq 4,%1\n", \
- TENTRY \
- " .dword 2b,3b\n")
-
-#define __asm_clear_4(to, ret) \
- __asm_clear_4x_cont(to, ret, "", "", "")
-
-#define __asm_clear_8x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
- __asm_clear_4x_cont(to, ret, \
- CLEAR \
- "4: clear.d [%0+]\n", \
- FIXUP \
- "5: addq 4,%1\n", \
- TENTRY \
- " .dword 4b,5b\n")
-
-#define __asm_clear_8(to, ret) \
- __asm_clear_8x_cont(to, ret, "", "", "")
-
-#define __asm_clear_12x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
- __asm_clear_8x_cont(to, ret, \
- CLEAR \
- "6: clear.d [%0+]\n", \
- FIXUP \
- "7: addq 4,%1\n", \
- TENTRY \
- " .dword 6b,7b\n")
-
-#define __asm_clear_12(to, ret) \
- __asm_clear_12x_cont(to, ret, "", "", "")
-
-#define __asm_clear_16x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
- __asm_clear_12x_cont(to, ret, \
- CLEAR \
- "8: clear.d [%0+]\n", \
- FIXUP \
- "9: addq 4,%1\n", \
- TENTRY \
- " .dword 8b,9b\n")
-
-#define __asm_clear_16(to, ret) \
- __asm_clear_16x_cont(to, ret, "", "", "")
-
-#define __asm_clear_20x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
- __asm_clear_16x_cont(to, ret, \
- CLEAR \
- "10: clear.d [%0+]\n", \
- FIXUP \
- "11: addq 4,%1\n", \
- TENTRY \
- " .dword 10b,11b\n")
-
-#define __asm_clear_20(to, ret) \
- __asm_clear_20x_cont(to, ret, "", "", "")
-
-#define __asm_clear_24x_cont(to, ret, CLEAR, FIXUP, TENTRY) \
- __asm_clear_20x_cont(to, ret, \
- CLEAR \
- "12: clear.d [%0+]\n", \
- FIXUP \
- "13: addq 4,%1\n", \
- TENTRY \
- " .dword 12b,13b\n")
-
-#define __asm_clear_24(to, ret) \
- __asm_clear_24x_cont(to, ret, "", "", "")
-
-/*
- * Return the size of a string (including the ending 0)
- *
- * Return length of string in userspace including terminating 0
- * or 0 for error. Return a value greater than N if too long.
- */
-
-static inline long
-strnlen_user(const char *s, long n)
-{
- long res, tmp1;
-
- if (!access_ok(VERIFY_READ, s, 0))
- return 0;
-
- /*
- * This code is deduced from:
- *
- * tmp1 = n;
- * while (tmp1-- > 0 && *s++)
- * ;
- *
- * res = n - tmp1;
- *
- * (with tweaks).
- */
-
- __asm__ __volatile__ (
- " move.d %1,$acr\n"
- " cmpq 0,$acr\n"
- "0:\n"
- " ble 1f\n"
- " subq 1,$acr\n"
-
- "4: test.b [%0+]\n"
- " bne 0b\n"
- " cmpq 0,$acr\n"
- "1:\n"
- " move.d %1,%0\n"
- " sub.d $acr,%0\n"
- "2:\n"
- " .section .fixup,\"ax\"\n"
-
- "3: jump 2b\n"
- " clear.d %0\n"
-
- " .previous\n"
- " .section __ex_table,\"a\"\n"
- " .dword 4b,3b\n"
- " .previous\n"
- : "=r" (res), "=r" (tmp1)
- : "0" (s), "1" (n)
- : "acr");
-
- return res;
-}
-
-#endif