| /* |
| * interlocked functions |
| * |
| * Copyright 1996 Alexandre Julliard |
| * |
| * This 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. |
| * |
| * This 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 this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include "config.h" |
| #include "wine/port.h" |
| #include <assert.h> |
| |
| #ifdef __i386__ |
| |
| #if defined(_MSC_VER) |
| |
| __declspec(naked) int interlocked_cmpxchg( int *dest, int xchg, int compare ) |
| { |
| __asm mov eax, 12[esp]; |
| __asm mov ecx, 8[esp]; |
| __asm mov edx, 4[esp]; |
| __asm lock cmpxchg [edx], ecx; |
| __asm ret; |
| } |
| |
| __declspec(naked) void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare ) |
| { |
| __asm mov eax, 12[esp]; |
| __asm mov ecx, 8[esp]; |
| __asm mov edx, 4[esp]; |
| __asm lock cmpxchg [edx], ecx; |
| __asm ret; |
| } |
| |
| __declspec(naked) __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare) |
| { |
| __asm push ebx; |
| __asm push esi; |
| __asm mov esi, 12[esp]; |
| __asm mov ebx, 16[esp]; |
| __asm mov ecx, 20[esp]; |
| __asm mov eax, 24[esp]; |
| __asm mov edx, 28[esp]; |
| __asm lock cmpxchg8b [esi]; |
| __asm pop esi; |
| __asm pop ebx; |
| __asm ret; |
| } |
| |
| __declspec(naked) int interlocked_xchg( int *dest, int val ) |
| { |
| __asm mov eax, 8[esp]; |
| __asm mov edx, 4[esp]; |
| __asm lock xchg [edx], eax; |
| __asm ret; |
| } |
| |
| __declspec(naked) void *interlocked_xchg_ptr( void **dest, void *val ) |
| { |
| __asm mov eax, 8[esp]; |
| __asm mov edx, 4[esp]; |
| __asm lock xchg [edx], eax; |
| __asm ret; |
| } |
| |
| __declspec(naked) int interlocked_xchg_add( int *dest, int incr ) |
| { |
| __asm mov eax, 8[esp]; |
| __asm mov edx, 4[esp]; |
| __asm lock xadd [edx], eax; |
| __asm ret; |
| } |
| |
| #else |
| /* use gcc compatible asm code as default for __i386__ */ |
| |
| __ASM_GLOBAL_FUNC(interlocked_cmpxchg, |
| "movl 12(%esp),%eax\n\t" |
| "movl 8(%esp),%ecx\n\t" |
| "movl 4(%esp),%edx\n\t" |
| "lock; cmpxchgl %ecx,(%edx)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_cmpxchg_ptr, |
| "movl 12(%esp),%eax\n\t" |
| "movl 8(%esp),%ecx\n\t" |
| "movl 4(%esp),%edx\n\t" |
| "lock; cmpxchgl %ecx,(%edx)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_cmpxchg64, |
| "push %ebx\n\t" |
| __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") |
| __ASM_CFI(".cfi_rel_offset %ebx,0\n\t") |
| "push %esi\n\t" |
| __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") |
| __ASM_CFI(".cfi_rel_offset %esi,0\n\t") |
| "movl 12(%esp),%esi\n\t" |
| "movl 16(%esp),%ebx\n\t" |
| "movl 20(%esp),%ecx\n\t" |
| "movl 24(%esp),%eax\n\t" |
| "movl 28(%esp),%edx\n\t" |
| "lock; cmpxchg8b (%esi)\n\t" |
| "pop %esi\n\t" |
| __ASM_CFI(".cfi_same_value %esi\n\t") |
| __ASM_CFI(".cfi_adjust_cfa_offset -4\n\t") |
| "pop %ebx\n\t" |
| __ASM_CFI(".cfi_same_value %ebx\n\t") |
| __ASM_CFI(".cfi_adjust_cfa_offset -4\n\t") |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_xchg, |
| "movl 8(%esp),%eax\n\t" |
| "movl 4(%esp),%edx\n\t" |
| "lock; xchgl %eax,(%edx)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_xchg_ptr, |
| "movl 8(%esp),%eax\n\t" |
| "movl 4(%esp),%edx\n\t" |
| "lock; xchgl %eax,(%edx)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_xchg_add, |
| "movl 8(%esp),%eax\n\t" |
| "movl 4(%esp),%edx\n\t" |
| "lock; xaddl %eax,(%edx)\n\t" |
| "ret") |
| |
| #endif |
| |
| #elif defined(__x86_64__) |
| |
| __ASM_GLOBAL_FUNC(interlocked_cmpxchg, |
| "mov %edx, %eax\n\t" |
| "lock cmpxchgl %esi,(%rdi)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_cmpxchg_ptr, |
| "mov %rdx, %rax\n\t" |
| "lock cmpxchgq %rsi,(%rdi)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_cmpxchg64, |
| "mov %rdx, %rax\n\t" |
| "lock cmpxchgq %rsi,(%rdi)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_xchg, |
| "mov %esi, %eax\n\t" |
| "lock xchgl %eax, (%rdi)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_xchg_ptr, |
| "mov %rsi, %rax\n\t" |
| "lock xchgq %rax,(%rdi)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_xchg_add, |
| "mov %esi, %eax\n\t" |
| "lock xaddl %eax, (%rdi)\n\t" |
| "ret") |
| __ASM_GLOBAL_FUNC(interlocked_cmpxchg128, |
| "push %rbx\n\t" |
| __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t") |
| __ASM_CFI(".cfi_rel_offset %rbx,0\n\t") |
| "mov %rcx,%r8\n\t" /* compare */ |
| "mov %rdx,%rbx\n\t" /* xchg_low */ |
| "mov %rsi,%rcx\n\t" /* xchg_high */ |
| "mov 0(%r8),%rax\n\t" |
| "mov 8(%r8),%rdx\n\t" |
| "lock cmpxchg16b (%rdi)\n\t" |
| "mov %rax,0(%r8)\n\t" |
| "mov %rdx,8(%r8)\n\t" |
| "setz %al\n\t" |
| "pop %rbx\n\t" |
| __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t") |
| __ASM_CFI(".cfi_same_value %rbx\n\t") |
| "ret") |
| |
| #elif defined(__powerpc__) |
| void* interlocked_cmpxchg_ptr( void **dest, void* xchg, void* compare) |
| { |
| void *ret = 0; |
| void *scratch; |
| __asm__ __volatile__( |
| "0: lwarx %0,0,%2\n" |
| " xor. %1,%4,%0\n" |
| " bne 1f\n" |
| " stwcx. %3,0,%2\n" |
| " bne- 0b\n" |
| " isync\n" |
| "1: " |
| : "=&r"(ret), "=&r"(scratch) |
| : "r"(dest), "r"(xchg), "r"(compare) |
| : "cr0","memory"); |
| return ret; |
| } |
| |
| __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare) |
| { |
| /* FIXME: add code */ |
| assert(0); |
| } |
| |
| int interlocked_cmpxchg( int *dest, int xchg, int compare) |
| { |
| int ret = 0; |
| int scratch; |
| __asm__ __volatile__( |
| "0: lwarx %0,0,%2\n" |
| " xor. %1,%4,%0\n" |
| " bne 1f\n" |
| " stwcx. %3,0,%2\n" |
| " bne- 0b\n" |
| " isync\n" |
| "1: " |
| : "=&r"(ret), "=&r"(scratch) |
| : "r"(dest), "r"(xchg), "r"(compare) |
| : "cr0","memory","r0"); |
| return ret; |
| } |
| |
| int interlocked_xchg_add( int *dest, int incr ) |
| { |
| int ret = 0; |
| int zero = 0; |
| __asm__ __volatile__( |
| "0: lwarx %0, %3, %1\n" |
| " add %0, %2, %0\n" |
| " stwcx. %0, %3, %1\n" |
| " bne- 0b\n" |
| " isync\n" |
| : "=&r" (ret) |
| : "r"(dest), "r"(incr), "r"(zero) |
| : "cr0", "memory", "r0" |
| ); |
| return ret-incr; |
| } |
| |
| int interlocked_xchg( int* dest, int val ) |
| { |
| int ret = 0; |
| __asm__ __volatile__( |
| "0: lwarx %0,0,%1\n" |
| " stwcx. %2,0,%1\n" |
| " bne- 0b\n" |
| " isync\n" |
| : "=&r"(ret) |
| : "r"(dest), "r"(val) |
| : "cr0","memory","r0"); |
| return ret; |
| } |
| |
| void* interlocked_xchg_ptr( void** dest, void* val ) |
| { |
| void *ret = NULL; |
| __asm__ __volatile__( |
| "0: lwarx %0,0,%1\n" |
| " stwcx. %2,0,%1\n" |
| " bne- 0b\n" |
| " isync\n" |
| : "=&r"(ret) |
| : "r"(dest), "r"(val) |
| : "cr0","memory","r0"); |
| return ret; |
| } |
| |
| #else |
| |
| #include <pthread.h> |
| |
| static pthread_mutex_t interlocked_mutex = PTHREAD_MUTEX_INITIALIZER; |
| |
| int interlocked_cmpxchg( int *dest, int xchg, int compare ) |
| { |
| pthread_mutex_lock( &interlocked_mutex ); |
| |
| if (*dest == compare) |
| *dest = xchg; |
| else |
| compare = *dest; |
| |
| pthread_mutex_unlock( &interlocked_mutex ); |
| return compare; |
| } |
| |
| void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare ) |
| { |
| pthread_mutex_lock( &interlocked_mutex ); |
| |
| if (*dest == compare) |
| *dest = xchg; |
| else |
| compare = *dest; |
| |
| pthread_mutex_unlock( &interlocked_mutex ); |
| return compare; |
| } |
| |
| __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare ) |
| { |
| pthread_mutex_lock( &interlocked_mutex ); |
| |
| if (*dest == compare) |
| *dest = xchg; |
| else |
| compare = *dest; |
| |
| pthread_mutex_unlock( &interlocked_mutex ); |
| return compare; |
| } |
| |
| int interlocked_xchg( int *dest, int val ) |
| { |
| int retv; |
| pthread_mutex_lock( &interlocked_mutex ); |
| retv = *dest; |
| *dest = val; |
| pthread_mutex_unlock( &interlocked_mutex ); |
| return retv; |
| } |
| |
| void *interlocked_xchg_ptr( void **dest, void *val ) |
| { |
| void *retv; |
| pthread_mutex_lock( &interlocked_mutex ); |
| retv = *dest; |
| *dest = val; |
| pthread_mutex_unlock( &interlocked_mutex ); |
| return retv; |
| } |
| |
| int interlocked_xchg_add( int *dest, int incr ) |
| { |
| int retv; |
| pthread_mutex_lock( &interlocked_mutex ); |
| retv = *dest; |
| *dest += incr; |
| pthread_mutex_unlock( &interlocked_mutex ); |
| return retv; |
| } |
| |
| unsigned char interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high, __int64 xchg_low, __int64 *compare ) |
| { |
| unsigned char retv; |
| pthread_mutex_lock( &interlocked_mutex ); |
| if (dest[0] == compare[0] && dest[1] == compare[1]) |
| { |
| dest[0] = xchg_low; |
| dest[1] = xchg_high; |
| retv = 1; |
| } |
| else |
| { |
| compare[0] = dest[0]; |
| compare[1] = dest[1]; |
| retv = 0; |
| } |
| pthread_mutex_unlock( &interlocked_mutex ); |
| return retv; |
| } |
| |
| #endif |
