reactos/drivers/bus/acpi/acpica/include/platform/acgcc.h

   1 /******************************************************************************
   2  *
   3  * Name: acgcc.h - GCC specific defines, etc.
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2016, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #ifndef __ACGCC_H__
  45 #define __ACGCC_H__
  46
  47 /*
  48  * Use compiler specific <stdarg.h> is a good practice for even when
  49  * -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined.
  50  */
  51 #include <stdarg.h>
  52
  53 #define ACPI_INLINE             __inline__
  54
  55 /* Function name is used for debug output. Non-ANSI, compiler-dependent */
  56
  57 #define ACPI_GET_FUNCTION_NAME          __func__
  58
  59 /*
  60  * This macro is used to tag functions as "printf-like" because
  61  * some compilers (like GCC) can catch printf format string problems.
  62  */
  63 #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1)))
  64
  65 /*
  66  * Some compilers complain about unused variables. Sometimes we don't want to
  67  * use all the variables (for example, _AcpiModuleName). This allows us
  68  * to tell the compiler warning in a per-variable manner that a variable
  69  * is unused.
  70  */
  71 #define ACPI_UNUSED_VAR __attribute__ ((unused))
  72
  73 /* GCC supports __VA_ARGS__ in macros */
  74
  75 #define COMPILER_VA_MACRO               1
  76
  77
  78 #ifdef __REACTOS__
  79 /* Flush CPU cache - used when going to sleep. Wbinvd or similar. */
  80
  81 #ifdef ACPI_APPLICATION
  82 #define ACPI_FLUSH_CPU_CACHE()
  83 #else
  84 #define ACPI_FLUSH_CPU_CACHE()  asm ("WBINVD")
  85 #endif
  86
  87 /*
  88  * Global Lock acquire/release code
  89  *
  90  * Note: Handles case where the FACS pointer is null
  91  */
  92 #define ACPI_ACQUIRE_GLOBAL_LOCK(FacsPtr, Acq)              \
  93 do {                                                        \
  94     asm("orl    %2,%2;"                                     \
  95         "jz     2f;"                                        \
  96         "leal   16(%2),%2;"                                 \
  97         "1:"                                                \
  98         "movl   (%2),%%eax;"                                \
  99         "movl   %%eax,%%edx;"                               \
 100         "andl   %3,%%edx;"                                  \
 101         "btsl   $0x1,%%edx;"                                \
 102         "adcl   $0x0,%%edx;"                                \
 103         "lock;  cmpxchgl %%edx,(%2);"                       \
 104         "jnz    1b;"                                        \
 105         "cmpb   $0x3,%%dl;"                                 \
 106         "sbbl   %%eax,%%eax;"                               \
 107         "2:"                                                \
 108         :"=a"(Acq):"a"(0xFF),"c"(FacsPtr),"i"(~1L):"edx");\
 109 } while(0)
 110
 111 #define ACPI_RELEASE_GLOBAL_LOCK(FacsPtr, Acq)              \
 112 do {                                                        \
 113     asm("orl    %2,%2;"                                     \
 114         "jz     2f;"                                        \
 115         "leal   16(%2),%2;"                                 \
 116         "1:"                                                \
 117         "movl  (%2),%%eax;"                                 \
 118         "movl   %%eax,%%edx;"                               \
 119         "andl   %3,%%edx;"                                  \
 120         "lock;  cmpxchgl %%edx,(%2);"                       \
 121         "jnz    1b;"                                        \
 122         "cmpb   $0x3,%%dl;" /* FIXME: this is pointless */  \
 123         "andl   $0x1,%%eax;"                                \
 124         "2:"                                                \
 125         :"=a"(Acq):"a"(0),"c"(FacsPtr),"i"(~3L):"edx");\
 126 } while(0)
 127
 128
 129 /*
 130  * Note: This is also taken from our old adaptation.
 131  *       See acmsvc.h for where it came originally.
 132  */
 133 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
 134 {                           \
 135     q32 = n_hi / d32;       \
 136     r32 = n_lo / d32;       \
 137 }
 138
 139 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
 140 {                           \
 141     n_hi >>= 1;    \
 142     n_lo >>= 1;    \
 143 }
 144
 145 #endif /* __REACTOS__ */
 146 #endif /* __ACGCC_H__ */