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author | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-08-01 15:20:30 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2008-08-04 12:02:00 +1000 |
commit | b8b572e1015f81b4e748417be2629dfe51ab99f9 (patch) | |
tree | 7df58667d5ed71d6c8f8f4ce40ca16b6fb776d0b /include/asm-powerpc/futex.h | |
parent | 2b12a4c524812fb3f6ee590a02e65b95c8c32229 (diff) | |
download | linux-b8b572e1015f81b4e748417be2629dfe51ab99f9.tar.gz linux-b8b572e1015f81b4e748417be2629dfe51ab99f9.tar.bz2 linux-b8b572e1015f81b4e748417be2629dfe51ab99f9.zip |
powerpc: Move include files to arch/powerpc/include/asm
from include/asm-powerpc. This is the result of a
mkdir arch/powerpc/include/asm
git mv include/asm-powerpc/* arch/powerpc/include/asm
Followed by a few documentation/comment fixups and a couple of places
where <asm-powepc/...> was being used explicitly. Of the latter only
one was outside the arch code and it is a driver only built for powerpc.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/futex.h')
-rw-r--r-- | include/asm-powerpc/futex.h | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/include/asm-powerpc/futex.h b/include/asm-powerpc/futex.h deleted file mode 100644 index 6d406c5c5de4..000000000000 --- a/include/asm-powerpc/futex.h +++ /dev/null @@ -1,117 +0,0 @@ -#ifndef _ASM_POWERPC_FUTEX_H -#define _ASM_POWERPC_FUTEX_H - -#ifdef __KERNEL__ - -#include <linux/futex.h> -#include <linux/uaccess.h> -#include <asm/errno.h> -#include <asm/synch.h> -#include <asm/asm-compat.h> - -#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \ - __asm__ __volatile ( \ - LWSYNC_ON_SMP \ -"1: lwarx %0,0,%2\n" \ - insn \ - PPC405_ERR77(0, %2) \ -"2: stwcx. %1,0,%2\n" \ - "bne- 1b\n" \ - "li %1,0\n" \ -"3: .section .fixup,\"ax\"\n" \ -"4: li %1,%3\n" \ - "b 3b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - ".align 3\n" \ - PPC_LONG "1b,4b,2b,4b\n" \ - ".previous" \ - : "=&r" (oldval), "=&r" (ret) \ - : "b" (uaddr), "i" (-EFAULT), "1" (oparg) \ - : "cr0", "memory") - -static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr) -{ - int op = (encoded_op >> 28) & 7; - int cmp = (encoded_op >> 24) & 15; - int oparg = (encoded_op << 8) >> 20; - int cmparg = (encoded_op << 20) >> 20; - int oldval = 0, ret; - if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) - oparg = 1 << oparg; - - if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int))) - return -EFAULT; - - pagefault_disable(); - - switch (op) { - case FUTEX_OP_SET: - __futex_atomic_op("", ret, oldval, uaddr, oparg); - break; - case FUTEX_OP_ADD: - __futex_atomic_op("add %1,%0,%1\n", ret, oldval, uaddr, oparg); - break; - case FUTEX_OP_OR: - __futex_atomic_op("or %1,%0,%1\n", ret, oldval, uaddr, oparg); - break; - case FUTEX_OP_ANDN: - __futex_atomic_op("andc %1,%0,%1\n", ret, oldval, uaddr, oparg); - break; - case FUTEX_OP_XOR: - __futex_atomic_op("xor %1,%0,%1\n", ret, oldval, uaddr, oparg); - break; - default: - ret = -ENOSYS; - } - - pagefault_enable(); - - if (!ret) { - switch (cmp) { - case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break; - case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break; - case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break; - case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break; - case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break; - case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break; - default: ret = -ENOSYS; - } - } - return ret; -} - -static inline int -futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval) -{ - int prev; - - if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int))) - return -EFAULT; - - __asm__ __volatile__ ( - LWSYNC_ON_SMP -"1: lwarx %0,0,%2 # futex_atomic_cmpxchg_inatomic\n\ - cmpw 0,%0,%3\n\ - bne- 3f\n" - PPC405_ERR77(0,%2) -"2: stwcx. %4,0,%2\n\ - bne- 1b\n" - ISYNC_ON_SMP -"3: .section .fixup,\"ax\"\n\ -4: li %0,%5\n\ - b 3b\n\ - .previous\n\ - .section __ex_table,\"a\"\n\ - .align 3\n\ - " PPC_LONG "1b,4b,2b,4b\n\ - .previous" \ - : "=&r" (prev), "+m" (*uaddr) - : "r" (uaddr), "r" (oldval), "r" (newval), "i" (-EFAULT) - : "cc", "memory"); - - return prev; -} - -#endif /* __KERNEL__ */ -#endif /* _ASM_POWERPC_FUTEX_H */ |