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| author |   Paul Mundt <lethal@linux-sh.org> | 2012-05-25 13:02:48 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-06-13 10:28:16 +0900 |
| commit | 0e100e11bd73be4e28e457cf5ad49a6892d5d1fe (patch) | |
| tree | 55e193c2f37f458bd51d363bac78e20897c86b49 /arch/sh/kernel/cpu/sh5/entry.S | |
| parent | Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux (diff) | |
| download | linux-dev-0e100e11bd73be4e28e457cf5ad49a6892d5d1fe.tar.xz linux-dev-0e100e11bd73be4e28e457cf5ad49a6892d5d1fe.zip | |
sh: switch to generic strncpy_from_user().
This kills off the special sh32/64 versions and adopts the generic
version. It should be possible to optimize this for SH-4A unaligned
loads, but this is a corner case that can be supported incrementally.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/sh5/entry.S')
| -rw-r--r-- | arch/sh/kernel/cpu/sh5/entry.S | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S index ff1f0e6e9bec..b7b3f63299b0 100644 --- a/arch/sh/kernel/cpu/sh5/entry.S +++ b/arch/sh/kernel/cpu/sh5/entry.S @@ -1569,46 +1569,6 @@ ___clear_user_exit: #endif /* CONFIG_MMU */ /* - * int __strncpy_from_user(unsigned long __dest, unsigned long __src, - * int __count) - * - * Inputs: - * (r2) target address - * (r3) source address - * (r4) maximum size in bytes - * - * Ouputs: - * (*r2) copied data - * (r2) -EFAULT (in case of faulting) - * copied data (otherwise) - */ - .global __strncpy_from_user -__strncpy_from_user: - pta ___strncpy_from_user1, tr0 - pta ___strncpy_from_user_done, tr1 - or r4, ZERO, r5 /* r5 = original count */ - beq/u r4, r63, tr1 /* early exit if r4==0 */ - movi -(EFAULT), r6 /* r6 = reply, no real fixup */ - or ZERO, ZERO, r7 /* r7 = data, clear top byte of data */ - -___strncpy_from_user1: - ld.b r3, 0, r7 /* Fault address: only in reading */ - st.b r2, 0, r7 - addi r2, 1, r2 - addi r3, 1, r3 - beq/u ZERO, r7, tr1 - addi r4, -1, r4 /* return real number of copied bytes */ - bne/l ZERO, r4, tr0 - -___strncpy_from_user_done: - sub r5, r4, r6 /* If done, return copied */ - -___strncpy_from_user_exit: - or r6, ZERO, r2 - ptabs LINK, tr0 - blink tr0, ZERO - -/* * extern long __strnlen_user(const char *__s, long __n) * * Inputs: @@ -1982,7 +1942,6 @@ asm_uaccess_start: .long ___copy_user2, ___copy_user_exit .long ___clear_user1, ___clear_user_exit #endif - .long ___strncpy_from_user1, ___strncpy_from_user_exit .long ___strnlen_user1, ___strnlen_user_exit .long ___get_user_asm_b1, ___get_user_asm_b_exit .long ___get_user_asm_w1, ___get_user_asm_w_exit |