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Diffstat (limited to 'ANDROID_3.4.5/arch/hexagon/include/asm/atomic.h')
-rw-r--r--ANDROID_3.4.5/arch/hexagon/include/asm/atomic.h165
1 files changed, 0 insertions, 165 deletions
diff --git a/ANDROID_3.4.5/arch/hexagon/include/asm/atomic.h b/ANDROID_3.4.5/arch/hexagon/include/asm/atomic.h
deleted file mode 100644
index 3e258043..00000000
--- a/ANDROID_3.4.5/arch/hexagon/include/asm/atomic.h
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * Atomic operations for the Hexagon architecture
- *
- * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#ifndef _ASM_ATOMIC_H
-#define _ASM_ATOMIC_H
-
-#include <linux/types.h>
-#include <asm/cmpxchg.h>
-
-#define ATOMIC_INIT(i) { (i) }
-#define atomic_set(v, i) ((v)->counter = (i))
-
-/**
- * atomic_read - reads a word, atomically
- * @v: pointer to atomic value
- *
- * Assumes all word reads on our architecture are atomic.
- */
-#define atomic_read(v) ((v)->counter)
-
-/**
- * atomic_xchg - atomic
- * @v: pointer to memory to change
- * @new: new value (technically passed in a register -- see xchg)
- */
-#define atomic_xchg(v, new) (xchg(&((v)->counter), (new)))
-
-
-/**
- * atomic_cmpxchg - atomic compare-and-exchange values
- * @v: pointer to value to change
- * @old: desired old value to match
- * @new: new value to put in
- *
- * Parameters are then pointer, value-in-register, value-in-register,
- * and the output is the old value.
- *
- * Apparently this is complicated for archs that don't support
- * the memw_locked like we do (or it's broken or whatever).
- *
- * Kind of the lynchpin of the rest of the generically defined routines.
- * Remember V2 had that bug with dotnew predicate set by memw_locked.
- *
- * "old" is "expected" old val, __oldval is actual old value
- */
-static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
-{
- int __oldval;
-
- asm volatile(
- "1: %0 = memw_locked(%1);\n"
- " { P0 = cmp.eq(%0,%2);\n"
- " if (!P0.new) jump:nt 2f; }\n"
- " memw_locked(%1,P0) = %3;\n"
- " if (!P0) jump 1b;\n"
- "2:\n"
- : "=&r" (__oldval)
- : "r" (&v->counter), "r" (old), "r" (new)
- : "memory", "p0"
- );
-
- return __oldval;
-}
-
-static inline int atomic_add_return(int i, atomic_t *v)
-{
- int output;
-
- __asm__ __volatile__ (
- "1: %0 = memw_locked(%1);\n"
- " %0 = add(%0,%2);\n"
- " memw_locked(%1,P3)=%0;\n"
- " if !P3 jump 1b;\n"
- : "=&r" (output)
- : "r" (&v->counter), "r" (i)
- : "memory", "p3"
- );
- return output;
-
-}
-
-#define atomic_add(i, v) atomic_add_return(i, (v))
-
-static inline int atomic_sub_return(int i, atomic_t *v)
-{
- int output;
- __asm__ __volatile__ (
- "1: %0 = memw_locked(%1);\n"
- " %0 = sub(%0,%2);\n"
- " memw_locked(%1,P3)=%0\n"
- " if !P3 jump 1b;\n"
- : "=&r" (output)
- : "r" (&v->counter), "r" (i)
- : "memory", "p3"
- );
- return output;
-}
-
-#define atomic_sub(i, v) atomic_sub_return(i, (v))
-
-/**
- * atomic_add_unless - add unless the number is a given value
- * @v: pointer to value
- * @a: amount to add
- * @u: unless value is equal to u
- *
- * Returns 1 if the add happened, 0 if it didn't.
- */
-static inline int __atomic_add_unless(atomic_t *v, int a, int u)
-{
- int output, __oldval;
- asm volatile(
- "1: %0 = memw_locked(%2);"
- " {"
- " p3 = cmp.eq(%0, %4);"
- " if (p3.new) jump:nt 2f;"
- " %0 = add(%0, %3);"
- " %1 = #0;"
- " }"
- " memw_locked(%2, p3) = %0;"
- " {"
- " if !p3 jump 1b;"
- " %1 = #1;"
- " }"
- "2:"
- : "=&r" (__oldval), "=&r" (output)
- : "r" (v), "r" (a), "r" (u)
- : "memory", "p3"
- );
- return output;
-}
-
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-
-#define atomic_inc(v) atomic_add(1, (v))
-#define atomic_dec(v) atomic_sub(1, (v))
-
-#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
-#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
-#define atomic_sub_and_test(i, v) (atomic_sub_return(i, (v)) == 0)
-#define atomic_add_negative(i, v) (atomic_add_return(i, (v)) < 0)
-
-
-#define atomic_inc_return(v) (atomic_add_return(1, v))
-#define atomic_dec_return(v) (atomic_sub_return(1, v))
-
-#endif