diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sh/atomic-machine.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/sh/atomic-machine.h | 425 |
1 files changed, 0 insertions, 425 deletions
diff --git a/sysdeps/unix/sysv/linux/sh/atomic-machine.h b/sysdeps/unix/sysv/linux/sh/atomic-machine.h deleted file mode 100644 index 5a7e953ac4..0000000000 --- a/sysdeps/unix/sysv/linux/sh/atomic-machine.h +++ /dev/null @@ -1,425 +0,0 @@ -/* Atomic operations used inside libc. Linux/SH version. - Copyright (C) 2003-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <stdint.h> - - -typedef int8_t atomic8_t; -typedef uint8_t uatomic8_t; -typedef int_fast8_t atomic_fast8_t; -typedef uint_fast8_t uatomic_fast8_t; - -typedef int16_t atomic16_t; -typedef uint16_t uatomic16_t; -typedef int_fast16_t atomic_fast16_t; -typedef uint_fast16_t uatomic_fast16_t; - -typedef int32_t atomic32_t; -typedef uint32_t uatomic32_t; -typedef int_fast32_t atomic_fast32_t; -typedef uint_fast32_t uatomic_fast32_t; - -typedef int64_t atomic64_t; -typedef uint64_t uatomic64_t; -typedef int_fast64_t atomic_fast64_t; -typedef uint_fast64_t uatomic_fast64_t; - -typedef intptr_t atomicptr_t; -typedef uintptr_t uatomicptr_t; -typedef intmax_t atomic_max_t; -typedef uintmax_t uatomic_max_t; - -#define __HAVE_64B_ATOMICS 0 -#define USE_ATOMIC_COMPILER_BUILTINS 0 - -/* XXX Is this actually correct? */ -#define ATOMIC_EXCHANGE_USES_CAS 1 - -/* SH kernel has implemented a gUSA ("g" User Space Atomicity) support - for the user space atomicity. The atomicity macros use this scheme. - - Reference: - Niibe Yutaka, "gUSA: Simple and Efficient User Space Atomicity - Emulation with Little Kernel Modification", Linux Conference 2002, - Japan. http://lc.linux.or.jp/lc2002/papers/niibe0919h.pdf (in - Japanese). - - B.N. Bershad, D. Redell, and J. Ellis, "Fast Mutual Exclusion for - Uniprocessors", Proceedings of the Fifth Architectural Support for - Programming Languages and Operating Systems (ASPLOS), pp. 223-233, - October 1992. http://www.cs.washington.edu/homes/bershad/Papers/Rcs.ps - - SuperH ABI: - r15: -(size of atomic instruction sequence) < 0 - r0: end point - r1: saved stack pointer -*/ - -#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ - ({ __typeof (*(mem)) __result; \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.b @%1,%0\n\ - cmp/eq %0,%3\n\ - bf 1f\n\ - mov.b %2,@%1\n\ - 1: mov r1,r15"\ - : "=&r" (__result) : "u" (mem), "u" (newval), "u" (oldval) \ - : "r0", "r1", "t", "memory"); \ - __result; }) - -#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ - ({ __typeof (*(mem)) __result; \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - mov #-8,r15\n\ - 0: mov.w @%1,%0\n\ - cmp/eq %0,%3\n\ - bf 1f\n\ - mov.w %2,@%1\n\ - 1: mov r1,r15"\ - : "=&r" (__result) : "u" (mem), "u" (newval), "u" (oldval) \ - : "r0", "r1", "t", "memory"); \ - __result; }) - -#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ - ({ __typeof (*(mem)) __result; \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.l @%1,%0\n\ - cmp/eq %0,%3\n\ - bf 1f\n\ - mov.l %2,@%1\n\ - 1: mov r1,r15"\ - : "=&r" (__result) : "u" (mem), "u" (newval), "u" (oldval) \ - : "r0", "r1", "t", "memory"); \ - __result; }) - -/* XXX We do not really need 64-bit compare-and-exchange. At least - not in the moment. Using it would mean causing portability - problems since not many other 32-bit architectures have support for - such an operation. So don't define any code for now. */ - -# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ - (abort (), (__typeof (*mem)) 0) - -#define atomic_exchange_and_add(mem, value) \ - ({ __typeof (*(mem)) __result, __tmp, __value = (value); \ - if (sizeof (*(mem)) == 1) \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.b @%2,%0\n\ - mov %1,r2\n\ - add %0,r2\n\ - mov.b r2,@%2\n\ - 1: mov r1,r15"\ - : "=&r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "memory"); \ - else if (sizeof (*(mem)) == 2) \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.w @%2,%0\n\ - mov %1,r2\n\ - add %0,r2\n\ - mov.w r2,@%2\n\ - 1: mov r1,r15"\ - : "=&r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "memory"); \ - else if (sizeof (*(mem)) == 4) \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.l @%2,%0\n\ - mov %1,r2\n\ - add %0,r2\n\ - mov.l r2,@%2\n\ - 1: mov r1,r15"\ - : "=&r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "memory"); \ - else \ - { \ - __typeof (mem) memp = (mem); \ - do \ - __result = *memp; \ - while (__arch_compare_and_exchange_val_64_acq \ - (memp, __result + __value, __result) == __result); \ - (void) __value; \ - } \ - __result; }) - -#define atomic_add(mem, value) \ - (void) ({ __typeof (*(mem)) __tmp, __value = (value); \ - if (sizeof (*(mem)) == 1) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.b @%1,r2\n\ - add %0,r2\n\ - mov.b r2,@%1\n\ - 1: mov r1,r15"\ - : "=&r" (__tmp) : "u" (mem), "0" (__value) \ - : "r0", "r1", "r2", "memory"); \ - else if (sizeof (*(mem)) == 2) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.w @%1,r2\n\ - add %0,r2\n\ - mov.w r2,@%1\n\ - 1: mov r1,r15"\ - : "=&r" (__tmp) : "u" (mem), "0" (__value) \ - : "r0", "r1", "r2", "memory"); \ - else if (sizeof (*(mem)) == 4) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.l @%1,r2\n\ - add %0,r2\n\ - mov.l r2,@%1\n\ - 1: mov r1,r15"\ - : "=&r" (__tmp) : "u" (mem), "0" (__value) \ - : "r0", "r1", "r2", "memory"); \ - else \ - { \ - __typeof (*(mem)) oldval; \ - __typeof (mem) memp = (mem); \ - do \ - oldval = *memp; \ - while (__arch_compare_and_exchange_val_64_acq \ - (memp, oldval + __value, oldval) == oldval); \ - (void) __value; \ - } \ - }) - -#define atomic_add_negative(mem, value) \ - ({ unsigned char __result; \ - __typeof (*(mem)) __tmp, __value = (value); \ - if (sizeof (*(mem)) == 1) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.b @%2,r2\n\ - add %1,r2\n\ - mov.b r2,@%2\n\ - 1: mov r1,r15\n\ - shal r2\n\ - movt %0"\ - : "=r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "t", "memory"); \ - else if (sizeof (*(mem)) == 2) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.w @%2,r2\n\ - add %1,r2\n\ - mov.w r2,@%2\n\ - 1: mov r1,r15\n\ - shal r2\n\ - movt %0"\ - : "=r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "t", "memory"); \ - else if (sizeof (*(mem)) == 4) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.l @%2,r2\n\ - add %1,r2\n\ - mov.l r2,@%2\n\ - 1: mov r1,r15\n\ - shal r2\n\ - movt %0"\ - : "=r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "t", "memory"); \ - else \ - abort (); \ - __result; }) - -#define atomic_add_zero(mem, value) \ - ({ unsigned char __result; \ - __typeof (*(mem)) __tmp, __value = (value); \ - if (sizeof (*(mem)) == 1) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.b @%2,r2\n\ - add %1,r2\n\ - mov.b r2,@%2\n\ - 1: mov r1,r15\n\ - tst r2,r2\n\ - movt %0"\ - : "=r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "t", "memory"); \ - else if (sizeof (*(mem)) == 2) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.w @%2,r2\n\ - add %1,r2\n\ - mov.w r2,@%2\n\ - 1: mov r1,r15\n\ - tst r2,r2\n\ - movt %0"\ - : "=r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "t", "memory"); \ - else if (sizeof (*(mem)) == 4) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.l @%2,r2\n\ - add %1,r2\n\ - mov.l r2,@%2\n\ - 1: mov r1,r15\n\ - tst r2,r2\n\ - movt %0"\ - : "=r" (__result), "=&r" (__tmp) : "u" (mem), "1" (__value) \ - : "r0", "r1", "r2", "t", "memory"); \ - else \ - abort (); \ - __result; }) - -#define atomic_increment_and_test(mem) atomic_add_zero((mem), 1) -#define atomic_decrement_and_test(mem) atomic_add_zero((mem), -1) - -#define atomic_bit_set(mem, bit) \ - (void) ({ unsigned int __mask = 1 << (bit); \ - if (sizeof (*(mem)) == 1) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.b @%0,r2\n\ - or %1,r2\n\ - mov.b r2,@%0\n\ - 1: mov r1,r15"\ - : : "u" (mem), "u" (__mask) \ - : "r0", "r1", "r2", "memory"); \ - else if (sizeof (*(mem)) == 2) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.w @%0,r2\n\ - or %1,r2\n\ - mov.w r2,@%0\n\ - 1: mov r1,r15"\ - : : "u" (mem), "u" (__mask) \ - : "r0", "r1", "r2", "memory"); \ - else if (sizeof (*(mem)) == 4) \ - __asm __volatile ("\ - mova 1f,r0\n\ - mov r15,r1\n\ - .align 2\n\ - mov #(0f-1f),r15\n\ - 0: mov.l @%0,r2\n\ - or %1,r2\n\ - mov.l r2,@%0\n\ - 1: mov r1,r15"\ - : : "u" (mem), "u" (__mask) \ - : "r0", "r1", "r2", "memory"); \ - else \ - abort (); \ - }) - -#define atomic_bit_test_set(mem, bit) \ - ({ unsigned int __mask = 1 << (bit); \ - unsigned int __result = __mask; \ - if (sizeof (*(mem)) == 1) \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.b @%2,r2\n\ - mov r2,r3\n\ - or %1,r2\n\ - mov.b r2,@%2\n\ - 1: mov r1,r15\n\ - and r3,%0"\ - : "=&r" (__result), "=&r" (__mask) \ - : "u" (mem), "0" (__result), "1" (__mask) \ - : "r0", "r1", "r2", "r3", "memory"); \ - else if (sizeof (*(mem)) == 2) \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.w @%2,r2\n\ - mov r2,r3\n\ - or %1,r2\n\ - mov.w %1,@%2\n\ - 1: mov r1,r15\n\ - and r3,%0"\ - : "=&r" (__result), "=&r" (__mask) \ - : "u" (mem), "0" (__result), "1" (__mask) \ - : "r0", "r1", "r2", "r3", "memory"); \ - else if (sizeof (*(mem)) == 4) \ - __asm __volatile ("\ - mova 1f,r0\n\ - .align 2\n\ - mov r15,r1\n\ - mov #(0f-1f),r15\n\ - 0: mov.l @%2,r2\n\ - mov r2,r3\n\ - or r2,%1\n\ - mov.l %1,@%2\n\ - 1: mov r1,r15\n\ - and r3,%0"\ - : "=&r" (__result), "=&r" (__mask) \ - : "u" (mem), "0" (__result), "1" (__mask) \ - : "r0", "r1", "r2", "r3", "memory"); \ - else \ - abort (); \ - __result; }) |