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| Source at commit 660 created 13 years 4 months ago. By meklort, Added includes dir for modules (c++ includes only at the moment, may ad klibc includes later on). Includes path is now included for modules | |
|---|---|
| 1 | /*␊ |
| 2 | * klibc/sysconfig.h␊ |
| 3 | *␊ |
| 4 | * Allows for definitions of some things which may be system-dependent␊ |
| 5 | * NOTE: this file must not result in any output from the preprocessor.␊ |
| 6 | */␊ |
| 7 | ␊ |
| 8 | #ifndef _KLIBC_SYSCONFIG_H␊ |
| 9 | #define _KLIBC_SYSCONFIG_H␊ |
| 10 | ␊ |
| 11 | #include <klibc/archconfig.h>␊ |
| 12 | #include <asm/unistd.h>␊ |
| 13 | ␊ |
| 14 | /*␊ |
| 15 | * These are the variables that can be defined in <klibc/archconfig.h>.␊ |
| 16 | * For boolean options, #define to 0 to disable, #define to 1 to enable.␊ |
| 17 | *␊ |
| 18 | * If undefined, they will be given defaults here.␊ |
| 19 | */␊ |
| 20 | ␊ |
| 21 | ␊ |
| 22 | /*␊ |
| 23 | * _KLIBC_NO_MMU:␊ |
| 24 | *␊ |
| 25 | *␉Indicates this architecture doesn't have an MMU, and therefore␊ |
| 26 | *␉does not have the sys_fork and sys_brk system calls.␊ |
| 27 | */␊ |
| 28 | /* Default to having an MMU if we can find the fork system call */␊ |
| 29 | #ifndef _KLIBC_NO_MMU␊ |
| 30 | # if defined(__NR_fork)␊ |
| 31 | # define _KLIBC_NO_MMU 0␊ |
| 32 | # else␊ |
| 33 | # define _KLIBC_NO_MMU 1␊ |
| 34 | # endif␊ |
| 35 | #endif␊ |
| 36 | ␊ |
| 37 | ␊ |
| 38 | /*␊ |
| 39 | * _KLIBC_REAL_VFORK:␊ |
| 40 | *␊ |
| 41 | *␉Indicates that this architecture has a real vfork() system call.␊ |
| 42 | *␉This is the default if sys_vfork exists; if there is an␊ |
| 43 | *␉architecture-dependent implementation of vfork(), define this␊ |
| 44 | *␉symbol.␊ |
| 45 | */␊ |
| 46 | #ifndef _KLIBC_REAL_VFORK␊ |
| 47 | # if defined(__NR_vfork)␊ |
| 48 | # define _KLIBC_REAL_VFORK 1␊ |
| 49 | # else␊ |
| 50 | # define _KLIBC_REAL_VFORK 0␊ |
| 51 | # endif␊ |
| 52 | #endif␊ |
| 53 | ␊ |
| 54 | ␊ |
| 55 | /*␊ |
| 56 | * _KLIBC_USE_MMAP2:␊ |
| 57 | *␊ |
| 58 | *␉Indicates that this architecture should use sys_mmap2 instead␊ |
| 59 | *␉of sys_mmap. This is the default on 32-bit architectures, assuming␊ |
| 60 | *␉sys_mmap2 exists.␊ |
| 61 | */␊ |
| 62 | #ifndef _KLIBC_USE_MMAP2␊ |
| 63 | # if (_BITSIZE == 32 && defined(__NR_mmap2)) || \␊ |
| 64 | (_BITSIZE == 64 && !defined(__NR_mmap))␊ |
| 65 | # define _KLIBC_USE_MMAP2 1␊ |
| 66 | # else␊ |
| 67 | # define _KLIBC_USE_MMAP2 0␊ |
| 68 | # endif␊ |
| 69 | #endif␊ |
| 70 | ␊ |
| 71 | ␊ |
| 72 | /*␊ |
| 73 | * _KLIBC_MMAP2_SHIFT:␊ |
| 74 | *␊ |
| 75 | *␉Indicate the shift of the offset parameter in sys_mmap2.␊ |
| 76 | *␉On most architectures, this is always 12, but on some␊ |
| 77 | *␉architectures it can be a different number, or the current␊ |
| 78 | *␉page size. If this is dependent on the page size, define␊ |
| 79 | *␉this to an expression which includes __getpageshift().␊ |
| 80 | */␊ |
| 81 | #ifndef _KLIBC_MMAP2_SHIFT␊ |
| 82 | # define _KLIBC_MMAP2_SHIFT 12␊ |
| 83 | #endif␊ |
| 84 | ␊ |
| 85 | ␊ |
| 86 | /*␊ |
| 87 | * _KLIBC_MALLOC_USES_SBRK:␊ |
| 88 | *␊ |
| 89 | *␉Indicates that malloc() should use sbrk() to obtain raw memory␊ |
| 90 | *␉from the system, rather than mmap().␊ |
| 91 | */␊ |
| 92 | /* Default to get memory using mmap() */␊ |
| 93 | #ifndef _KLIBC_MALLOC_USES_SBRK␊ |
| 94 | # define _KLIBC_MALLOC_USES_SBRK 0␊ |
| 95 | #endif␊ |
| 96 | ␊ |
| 97 | ␊ |
| 98 | /*␊ |
| 99 | * _KLIBC_MALLOC_CHUNK_SIZE:␊ |
| 100 | *␉This is the minimum chunk size we will ask the kernel for using␊ |
| 101 | *␉malloc(); this should be a multiple of the page size and must␊ |
| 102 | *␉be a power of 2.␊ |
| 103 | */␊ |
| 104 | #ifndef _KLIBC_MALLOC_CHUNK_SIZE␊ |
| 105 | # define _KLIBC_MALLOC_CHUNK_SIZE␉65536␊ |
| 106 | #endif␊ |
| 107 | ␊ |
| 108 | ␊ |
| 109 | /*␊ |
| 110 | * _KLIBC_SBRK_ALIGNMENT:␊ |
| 111 | *␊ |
| 112 | *␉This is the minimum alignment for the memory returned by␊ |
| 113 | *␉sbrk(). It must be a power of 2. If _KLIBC_MALLOC_USES_SBRK␊ |
| 114 | *␉is set it should be no smaller than the size of struct␊ |
| 115 | *␉arena_header in malloc.h (== 4 pointers.)␊ |
| 116 | */␊ |
| 117 | #ifndef _KLIBC_SBRK_ALIGNMENT␊ |
| 118 | # define _KLIBC_SBRK_ALIGNMENT␉␉32␊ |
| 119 | #endif␊ |
| 120 | ␊ |
| 121 | ␊ |
| 122 | /*␊ |
| 123 | * _KLIBC_USE_RT_SIG:␊ |
| 124 | *␊ |
| 125 | * Indicates that this architecture should use the rt_sig*()␊ |
| 126 | * family of system calls, even if the older system calls are␊ |
| 127 | * provided. This requires that <asm/signal.h> is correct for␊ |
| 128 | * using with the rt_sig*() system calls. This is the default if␊ |
| 129 | * the older system calls are undefined in <asm/unistd.h>.␊ |
| 130 | *␊ |
| 131 | */␊ |
| 132 | #ifndef _KLIBC_USE_RT_SIG␊ |
| 133 | # ifdef __NR_sigaction␊ |
| 134 | # define _KLIBC_USE_RT_SIG 0␊ |
| 135 | # else␊ |
| 136 | # define _KLIBC_USE_RT_SIG 1␊ |
| 137 | # endif␊ |
| 138 | #endif␊ |
| 139 | ␊ |
| 140 | ␊ |
| 141 | /*␊ |
| 142 | * _KLIBC_NEEDS_SA_RESTORER:␊ |
| 143 | *␊ |
| 144 | *␉Some architectures, like x86-64 and some i386 Fedora kernels,␊ |
| 145 | *␉do not provide a default sigreturn, and therefore must have␊ |
| 146 | *␉SA_RESTORER set.␊ |
| 147 | */␊ |
| 148 | #ifndef _KLIBC_NEEDS_SA_RESTORER␊ |
| 149 | # define _KLIBC_NEEDS_SA_RESTORER 0␊ |
| 150 | #endif␊ |
| 151 | ␊ |
| 152 | ␊ |
| 153 | /*␊ |
| 154 | * _KLIBC_STATFS_F_TYPE_64:␊ |
| 155 | *␊ |
| 156 | *␉This indicates that the f_type, f_bsize, f_namelen,␊ |
| 157 | *␉f_frsize, and f_spare fields of struct statfs are␊ |
| 158 | *␉64 bits long. This is normally the case for 64-bit␊ |
| 159 | *␉platforms, and so is the default for those. See␊ |
| 160 | *␉usr/include/sys/vfs.h for the exact details.␊ |
| 161 | */␊ |
| 162 | #ifndef _KLIBC_STATFS_F_TYPE_64␊ |
| 163 | # define _KLIBC_STATFS_F_TYPE_64 (_BITSIZE == 64)␊ |
| 164 | #endif␊ |
| 165 | ␊ |
| 166 | ␊ |
| 167 | /*␊ |
| 168 | * _KLIBC_STATFS_F_TYPE_32B:␊ |
| 169 | *␊ |
| 170 | * ␉mips has it's own definition of statfs, which is␊ |
| 171 | * ␉different from any other 32 bit arch.␊ |
| 172 | */␉␊ |
| 173 | #ifndef _KLIBC_STATFS_F_TYPE_32B␊ |
| 174 | # define _KLIBC_STATFS_F_TYPE_32B 0␊ |
| 175 | #endif␊ |
| 176 | ␊ |
| 177 | ␊ |
| 178 | /*␊ |
| 179 | * _KLIBC_HAS_ARCHSOCKET_H␊ |
| 180 | *␊ |
| 181 | * This architecture has <klibc/archsocket.h>␊ |
| 182 | */␊ |
| 183 | #ifndef _KLIBC_HAS_ARCHSOCKET_H␊ |
| 184 | # define _KLIBC_HAS_ARCHSOCKET_H 0␊ |
| 185 | #endif␊ |
| 186 | ␊ |
| 187 | ␊ |
| 188 | /*␊ |
| 189 | * _KLIBC_SYS_SOCKETCALL␊ |
| 190 | *␊ |
| 191 | *␉This architecture (e.g. SPARC) advertises socket-related␊ |
| 192 | *␉system calls, which are not actually implemented. Use␊ |
| 193 | *␉socketcalls unconditionally instead.␊ |
| 194 | */␊ |
| 195 | #ifndef _KLIBC_SYS_SOCKETCALL␊ |
| 196 | # define _KLIBC_SYS_SOCKETCALL 0␊ |
| 197 | #endif␊ |
| 198 | ␊ |
| 199 | #endif /* _KLIBC_SYSCONFIG_H */␊ |
| 200 | |
