diff options
Diffstat (limited to 'arch/mn10300/include/asm/rwlock.h')
-rw-r--r-- | arch/mn10300/include/asm/rwlock.h | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/mn10300/include/asm/rwlock.h b/arch/mn10300/include/asm/rwlock.h deleted file mode 100644 index 6d594d4..0000000 --- a/arch/mn10300/include/asm/rwlock.h +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Helpers used by both rw spinlocks and rw semaphores. - * - * Based in part on code from semaphore.h and - * spinlock.h Copyright 1996 Linus Torvalds. - * - * Copyright 1999 Red Hat, Inc. - * - * Written by Benjamin LaHaise. - * - * Modified by Matsushita Electric Industrial Co., Ltd. - * Modifications: - * 13-Nov-2006 MEI Temporarily delete lock functions for SMP support. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - */ -#ifndef _ASM_RWLOCK_H -#define _ASM_RWLOCK_H - -#define RW_LOCK_BIAS 0x01000000 - -#ifndef CONFIG_SMP - -typedef struct { unsigned long a[100]; } __dummy_lock_t; -#define __dummy_lock(lock) (*(__dummy_lock_t *)(lock)) - -#define RW_LOCK_BIAS_STR "0x01000000" - -#define __build_read_lock_ptr(rw, helper) \ - do { \ - asm volatile( \ - " mov (%0),d3 \n" \ - " sub 1,d3 \n" \ - " mov d3,(%0) \n" \ - " blt 1f \n" \ - " bra 2f \n" \ - "1: jmp 3f \n" \ - "2: \n" \ - " .section .text.lock,\"ax\" \n" \ - "3: call "helper"[],0 \n" \ - " jmp 2b \n" \ - " .previous" \ - : \ - : "d" (rw) \ - : "memory", "d3", "cc"); \ - } while (0) - -#define __build_read_lock_const(rw, helper) \ - do { \ - asm volatile( \ - " mov (%0),d3 \n" \ - " sub 1,d3 \n" \ - " mov d3,(%0) \n" \ - " blt 1f \n" \ - " bra 2f \n" \ - "1: jmp 3f \n" \ - "2: \n" \ - " .section .text.lock,\"ax\" \n" \ - "3: call "helper"[],0 \n" \ - " jmp 2b \n" \ - " .previous" \ - : \ - : "d" (rw) \ - : "memory", "d3", "cc"); \ - } while (0) - -#define __build_read_lock(rw, helper) \ - do { \ - if (__builtin_constant_p(rw)) \ - __build_read_lock_const(rw, helper); \ - else \ - __build_read_lock_ptr(rw, helper); \ - } while (0) - -#define __build_write_lock_ptr(rw, helper) \ - do { \ - asm volatile( \ - " mov (%0),d3 \n" \ - " sub 1,d3 \n" \ - " mov d3,(%0) \n" \ - " blt 1f \n" \ - " bra 2f \n" \ - "1: jmp 3f \n" \ - "2: \n" \ - " .section .text.lock,\"ax\" \n" \ - "3: call "helper"[],0 \n" \ - " jmp 2b \n" \ - " .previous" \ - : \ - : "d" (rw) \ - : "memory", "d3", "cc"); \ - } while (0) - -#define __build_write_lock_const(rw, helper) \ - do { \ - asm volatile( \ - " mov (%0),d3 \n" \ - " sub 1,d3 \n" \ - " mov d3,(%0) \n" \ - " blt 1f \n" \ - " bra 2f \n" \ - "1: jmp 3f \n" \ - "2: \n" \ - " .section .text.lock,\"ax\" \n" \ - "3: call "helper"[],0 \n" \ - " jmp 2b \n" \ - " .previous" \ - : \ - : "d" (rw) \ - : "memory", "d3", "cc"); \ - } while (0) - -#define __build_write_lock(rw, helper) \ - do { \ - if (__builtin_constant_p(rw)) \ - __build_write_lock_const(rw, helper); \ - else \ - __build_write_lock_ptr(rw, helper); \ - } while (0) - -#endif /* CONFIG_SMP */ -#endif /* _ASM_RWLOCK_H */ |