sljit_src/sljitConfig.h

   1 /*
   2  *    Stack-less Just-In-Time compiler
   3  *
   4  *    Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without modification, are
   7  * permitted provided that the following conditions are met:
   8  *
   9  *   1. Redistributions of source code must retain the above copyright notice, this list of
  10  *      conditions and the following disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above copyright notice, this list
  13  *      of conditions and the following disclaimer in the documentation and/or other materials
  14  *      provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
  17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  19  * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  21  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  22  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #ifndef SLJIT_CONFIG_H_
  28 #define SLJIT_CONFIG_H_
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /*
  35   This file contains the basic configuration options for the SLJIT compiler
  36   and their default values. These options can be overridden in the
  37   sljitConfigPre.h header file when SLJIT_HAVE_CONFIG_PRE is set to a
  38   non-zero value.
  39 */
  40
  41 /* --------------------------------------------------------------------- */
  42 /*  Architecture                                                         */
  43 /* --------------------------------------------------------------------- */
  44
  45 /* Architecture selection. */
  46 /* #define SLJIT_CONFIG_X86_32 1 */
  47 /* #define SLJIT_CONFIG_X86_64 1 */
  48 /* #define SLJIT_CONFIG_ARM_V5 1 */
  49 /* #define SLJIT_CONFIG_ARM_V7 1 */
  50 /* #define SLJIT_CONFIG_ARM_THUMB2 1 */
  51 /* #define SLJIT_CONFIG_ARM_64 1 */
  52 /* #define SLJIT_CONFIG_PPC_32 1 */
  53 /* #define SLJIT_CONFIG_PPC_64 1 */
  54 /* #define SLJIT_CONFIG_MIPS_32 1 */
  55 /* #define SLJIT_CONFIG_MIPS_64 1 */
  56 /* #define SLJIT_CONFIG_SPARC_32 1 */
  57 /* #define SLJIT_CONFIG_S390X 1 */
  58
  59 /* #define SLJIT_CONFIG_AUTO 1 */
  60 /* #define SLJIT_CONFIG_UNSUPPORTED 1 */
  61
  62 /* --------------------------------------------------------------------- */
  63 /*  Utilities                                                            */
  64 /* --------------------------------------------------------------------- */
  65
  66 /* Implements a stack like data structure (by using mmap / VirtualAlloc  */
  67 /* or a custom allocator). */
  68 #ifndef SLJIT_UTIL_STACK
  69 /* Enabled by default */
  70 #define SLJIT_UTIL_STACK 1
  71 #endif
  72
  73 /* Uses user provided allocator to allocate the stack (see SLJIT_UTIL_STACK) */
  74 #ifndef SLJIT_UTIL_SIMPLE_STACK_ALLOCATION
  75 /* Disabled by default */
  76 #define SLJIT_UTIL_SIMPLE_STACK_ALLOCATION 0
  77 #endif
  78
  79 /* Single threaded application. Does not require any locks. */
  80 #ifndef SLJIT_SINGLE_THREADED
  81 /* Disabled by default. */
  82 #define SLJIT_SINGLE_THREADED 0
  83 #endif
  84
  85 /* --------------------------------------------------------------------- */
  86 /*  Configuration                                                        */
  87 /* --------------------------------------------------------------------- */
  88
  89 /* If SLJIT_STD_MACROS_DEFINED is not defined, the application should
  90    define SLJIT_MALLOC, SLJIT_FREE, SLJIT_MEMCPY, and NULL. */
  91 #ifndef SLJIT_STD_MACROS_DEFINED
  92 /* Disabled by default. */
  93 #define SLJIT_STD_MACROS_DEFINED 0
  94 #endif
  95
  96 /* Executable code allocation:
  97    If SLJIT_EXECUTABLE_ALLOCATOR is not defined, the application should
  98    define SLJIT_MALLOC_EXEC, SLJIT_FREE_EXEC, and SLJIT_EXEC_OFFSET. */
  99 #ifndef SLJIT_EXECUTABLE_ALLOCATOR
 100 /* Enabled by default. */
 101 #define SLJIT_EXECUTABLE_ALLOCATOR 1
 102
 103 /* When SLJIT_PROT_EXECUTABLE_ALLOCATOR is enabled SLJIT uses
 104    an allocator which does not set writable and executable
 105    permission flags at the same time.
 106    Instead, it creates a shared memory segment (usually backed by a file)
 107    and maps it twice, with different permissions, depending on the use
 108    case.
 109    The trade-off is increased use of virtual memory, incompatibility with
 110    fork(), and some possible additional security risks by the use of
 111    publicly accessible files for the generated code. */
 112 #ifndef SLJIT_PROT_EXECUTABLE_ALLOCATOR
 113 /* Disabled by default. */
 114 #define SLJIT_PROT_EXECUTABLE_ALLOCATOR 0
 115 #endif
 116
 117 /* When SLJIT_WX_EXECUTABLE_ALLOCATOR is enabled SLJIT uses an
 118    allocator which does not set writable and executable permission
 119    flags at the same time.
 120    Instead, it creates a new independent map on each invocation and
 121    switches permissions at the underlying pages as needed.
 122    The trade-off is increased memory use and degraded performance. */
 123 #ifndef SLJIT_WX_EXECUTABLE_ALLOCATOR
 124 /* Disabled by default. */
 125 #define SLJIT_WX_EXECUTABLE_ALLOCATOR 0
 126 #endif
 127
 128 #endif /* !SLJIT_EXECUTABLE_ALLOCATOR */
 129
 130 /* Force cdecl calling convention even if a better calling
 131    convention (e.g. fastcall) is supported by the C compiler.
 132    If this option is disabled (this is the default), functions
 133    called from JIT should be defined with SLJIT_FUNC attribute.
 134    Standard C functions can still be called by using the
 135    SLJIT_CALL_CDECL jump type. */
 136 #ifndef SLJIT_USE_CDECL_CALLING_CONVENTION
 137 /* Disabled by default */
 138 #define SLJIT_USE_CDECL_CALLING_CONVENTION 0
 139 #endif
 140
 141 /* Return with error when an invalid argument is passed. */
 142 #ifndef SLJIT_ARGUMENT_CHECKS
 143 /* Disabled by default */
 144 #define SLJIT_ARGUMENT_CHECKS 0
 145 #endif
 146
 147 /* Debug checks (assertions, etc.). */
 148 #ifndef SLJIT_DEBUG
 149 /* Enabled by default */
 150 #define SLJIT_DEBUG 1
 151 #endif
 152
 153 /* Verbose operations. */
 154 #ifndef SLJIT_VERBOSE
 155 /* Enabled by default */
 156 #define SLJIT_VERBOSE 1
 157 #endif
 158
 159 /*
 160   SLJIT_IS_FPU_AVAILABLE
 161     The availability of the FPU can be controlled by SLJIT_IS_FPU_AVAILABLE.
 162       zero value - FPU is NOT present.
 163       nonzero value - FPU is present.
 164 */
 165
 166 /* For further configurations, see the beginning of sljitConfigInternal.h */
 167
 168 #ifdef __cplusplus
 169 } /* extern "C" */
 170 #endif
 171
 172 #endif /* SLJIT_CONFIG_H_ */