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_RISCV_32 1 */
  57 /* #define SLJIT_CONFIG_RISCV_64 1 */
  58 /* #define SLJIT_CONFIG_S390X 1 */
  59
  60 /* #define SLJIT_CONFIG_AUTO 1 */
  61 /* #define SLJIT_CONFIG_UNSUPPORTED 1 */
  62
  63 /* --------------------------------------------------------------------- */
  64 /*  Utilities                                                            */
  65 /* --------------------------------------------------------------------- */
  66
  67 /* Implements a stack like data structure (by using mmap / VirtualAlloc  */
  68 /* or a custom allocator). */
  69 #ifndef SLJIT_UTIL_STACK
  70 /* Enabled by default */
  71 #define SLJIT_UTIL_STACK 1
  72 #endif
  73
  74 /* Uses user provided allocator to allocate the stack (see SLJIT_UTIL_STACK) */
  75 #ifndef SLJIT_UTIL_SIMPLE_STACK_ALLOCATION
  76 /* Disabled by default */
  77 #define SLJIT_UTIL_SIMPLE_STACK_ALLOCATION 0
  78 #endif
  79
  80 /* Single threaded application. Does not require any locks. */
  81 #ifndef SLJIT_SINGLE_THREADED
  82 /* Disabled by default. */
  83 #define SLJIT_SINGLE_THREADED 0
  84 #endif
  85
  86 /* --------------------------------------------------------------------- */
  87 /*  Configuration                                                        */
  88 /* --------------------------------------------------------------------- */
  89
  90 /* If SLJIT_STD_MACROS_DEFINED is not defined, the application should
  91    define SLJIT_MALLOC, SLJIT_FREE, SLJIT_MEMCPY, and NULL. */
  92 #ifndef SLJIT_STD_MACROS_DEFINED
  93 /* Disabled by default. */
  94 #define SLJIT_STD_MACROS_DEFINED 0
  95 #endif
  96
  97 /* Executable code allocation:
  98    If SLJIT_EXECUTABLE_ALLOCATOR is not defined, the application should
  99    define SLJIT_MALLOC_EXEC, SLJIT_FREE_EXEC, and SLJIT_EXEC_OFFSET. */
 100 #ifndef SLJIT_EXECUTABLE_ALLOCATOR
 101 /* Enabled by default. */
 102 #define SLJIT_EXECUTABLE_ALLOCATOR 1
 103
 104 /* When SLJIT_PROT_EXECUTABLE_ALLOCATOR is enabled SLJIT uses
 105    an allocator which does not set writable and executable
 106    permission flags at the same time.
 107    Instead, it creates a shared memory segment (usually backed by a file)
 108    and maps it twice, with different permissions, depending on the use
 109    case.
 110    The trade-off is increased use of virtual memory, incompatibility with
 111    fork(), and some possible additional security risks by the use of
 112    publicly accessible files for the generated code. */
 113 #ifndef SLJIT_PROT_EXECUTABLE_ALLOCATOR
 114 /* Disabled by default. */
 115 #define SLJIT_PROT_EXECUTABLE_ALLOCATOR 0
 116 #endif
 117
 118 /* When SLJIT_WX_EXECUTABLE_ALLOCATOR is enabled SLJIT uses an
 119    allocator which does not set writable and executable permission
 120    flags at the same time.
 121    Instead, it creates a new independent map on each invocation and
 122    switches permissions at the underlying pages as needed.
 123    The trade-off is increased memory use and degraded performance. */
 124 #ifndef SLJIT_WX_EXECUTABLE_ALLOCATOR
 125 /* Disabled by default. */
 126 #define SLJIT_WX_EXECUTABLE_ALLOCATOR 0
 127 #endif
 128
 129 #endif /* !SLJIT_EXECUTABLE_ALLOCATOR */
 130
 131 /* Return with error when an invalid argument is passed. */
 132 #ifndef SLJIT_ARGUMENT_CHECKS
 133 /* Disabled by default */
 134 #define SLJIT_ARGUMENT_CHECKS 0
 135 #endif
 136
 137 /* Debug checks (assertions, etc.). */
 138 #ifndef SLJIT_DEBUG
 139 /* Enabled by default */
 140 #define SLJIT_DEBUG 1
 141 #endif
 142
 143 /* Verbose operations. */
 144 #ifndef SLJIT_VERBOSE
 145 /* Enabled by default */
 146 #define SLJIT_VERBOSE 1
 147 #endif
 148
 149 /*
 150   SLJIT_IS_FPU_AVAILABLE
 151     The availability of the FPU can be controlled by SLJIT_IS_FPU_AVAILABLE.
 152       zero value - FPU is NOT present.
 153       nonzero value - FPU is present.
 154 */
 155
 156 /* For further configurations, see the beginning of sljitConfigInternal.h */
 157
 158 #ifdef __cplusplus
 159 } /* extern "C" */
 160 #endif
 161
 162 #endif /* SLJIT_CONFIG_H_ */