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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:39:57 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:39:57 +0000 |
| commit | dc50eab76b709d68175a358d6e23a5a3890764d3 (patch) | |
| tree | c754d0390db060af0213ff994f0ac310e4cfd6e9 /arch/m68k/include/asm/bitops.h | |
| parent | Adding debian version 6.6.15-2. (diff) | |
| download | linux-dc50eab76b709d68175a358d6e23a5a3890764d3.tar.xz linux-dc50eab76b709d68175a358d6e23a5a3890764d3.zip | |
Merging upstream version 6.7.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/m68k/include/asm/bitops.h')
| -rw-r--r-- | arch/m68k/include/asm/bitops.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/bitops.h b/arch/m68k/include/asm/bitops.h index e984af71df..14c64a6f12 100644 --- a/arch/m68k/include/asm/bitops.h +++ b/arch/m68k/include/asm/bitops.h @@ -319,6 +319,27 @@ arch___test_and_change_bit(unsigned long nr, volatile unsigned long *addr) return test_and_change_bit(nr, addr); } +static inline bool xor_unlock_is_negative_byte(unsigned long mask, + volatile unsigned long *p) +{ +#ifdef CONFIG_COLDFIRE + __asm__ __volatile__ ("eorl %1, %0" + : "+m" (*p) + : "d" (mask) + : "memory"); + return *p & (1 << 7); +#else + char result; + char *cp = (char *)p + 3; /* m68k is big-endian */ + + __asm__ __volatile__ ("eor.b %1, %2; smi %0" + : "=d" (result) + : "di" (mask), "o" (*cp) + : "memory"); + return result; +#endif +} + /* * The true 68020 and more advanced processors support the "bfffo" * instruction for finding bits. ColdFire and simple 68000 parts |