mirror of
https://github.com/urbit/shrub.git
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192 lines
4.7 KiB
C
192 lines
4.7 KiB
C
/* include/c/portable.h
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**
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** This file is in the public domain.
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*/
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/** Must be compiled on gcc with C99 support.
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**/
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# ifndef __GNUC__
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# error "port me"
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# endif
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# define _GNU_SOURCE
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/** System include files.
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***
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*** Do not put include files that are only used in the
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*** porting layer here. Include them directly in the
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*** C file.
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**/
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# if defined(U3_OS_linux)
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# include <inttypes.h>
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# include <stdlib.h>
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# include <string.h>
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# include <stdarg.h>
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# include <unistd.h>
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# include <stdint.h>
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# include <assert.h>
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# include <byteswap.h>
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# include <setjmp.h>
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# include <stdio.h>
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# include <signal.h>
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# include <sys/time.h>
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# include <sys/resource.h>
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# include <sys/mman.h>
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# elif defined(U3_OS_osx)
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# include <inttypes.h>
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# include <stdlib.h>
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# include <string.h>
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# include <stdarg.h>
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# include <unistd.h>
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# include <stdint.h>
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# include <assert.h>
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# include <setjmp.h>
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# include <signal.h>
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# include <machine/endian.h>
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# include <machine/byte_order.h>
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# include <stdio.h>
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# include <sys/time.h>
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# include <sys/resource.h>
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# include <sys/mman.h>
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# elif defined(U3_OS_bsd)
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# include <inttypes.h>
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# include <stdlib.h>
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# include <string.h>
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# include <stdarg.h>
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# include <unistd.h>
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# include <stdint.h>
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# include <assert.h>
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# include <machine/endian.h>
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# include <setjmp.h>
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# include <stdio.h>
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# include <signal.h>
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# include <sys/time.h>
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# include <sys/resource.h>
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# include <sys/mman.h>
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# else
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#error "port: headers"
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# endif
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/** Address space layout.
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**/
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# if defined(U3_OS_linux)
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# define U3_OS_LoomBase 0x36000000
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# define U3_OS_LoomBits 29 // ie, 2^29 words == 2GB
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# elif defined(U3_OS_osx)
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# ifdef __LP64__
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# define U3_OS_LoomBase 0x200000000
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# else
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# define U3_OS_LoomBase 0x4000000
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# endif
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# define U3_OS_LoomBits 29 // ie, 2^29 words == 2GB
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# elif defined(U3_OS_bsd)
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# ifdef __LP64__
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# define U3_OS_LoomBase 0x200000000
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# else
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# define U3_OS_LoomBase 0x4000000
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# endif
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# define U3_OS_LoomBits 29 // ie, 2^29 words == 2GB
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# else
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# error "port: LoomBase"
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# endif
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/** Global variable control.
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***
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*** To instantiate globals, #define c3_global as extern.
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**/
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# ifndef c3_global
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# define c3_global
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# endif
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/** External, OS-independent library dependencies.
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**/
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/* The GMP (GNU arbitrary-precision arithmetic) library.
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** (Tested with version 4.0.1.)
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*/
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# include <gmp.h>
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/** Private C "extensions."
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***
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*** Except for these and main(), any function, macro, or structure
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*** names must be prefixed either by u3_/U3_ (for public names),
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*** or _ (for static and other file-local names).
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**/
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/* Endianness.
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*/
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# define c3_endian_little 0
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# define c3_endian_big 1
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# ifdef U3_OS_ENDIAN_little
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# define c3_endian c3_endian_little
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# elif defined(U3_OS_ENDIAN_big)
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# define c3_endian c3_endian_big
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# else
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# error "port: U3_OS_ENDIAN"
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# endif
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/* Byte swapping.
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*/
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# if defined(U3_OS_linux) || defined(U3_OS_bsd)
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# define c3_bswap_16(x) bswap_16(x)
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# define c3_bswap_32(x) bswap_32(x)
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# define c3_bswap_64(x) bswap_64(x)
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# elif defined(U3_OS_osx)
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# define c3_bswap_16(x) NXSwapShort(x)
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# define c3_bswap_32(x) NXSwapInt(x)
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# define c3_bswap_64(x) NXSwapLongLong(x)
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# else
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# error "port: byte swap"
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# endif
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/* Sync
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*/
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# if defined(U3_OS_linux)
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# define c3_sync(fd) (fdatasync(fd))
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# elif defined(U3_OS_osx)
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# define c3_sync(fd) (fcntl(fd, F_FULLFSYNC, 0))
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# elif defined(U3_OS_bsd)
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# define c3_sync(fd) (fsync(fd))
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# else
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# error "port: sync"
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# endif
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/* Purge
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*/
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# if defined(U3_OS_linux)
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# include <stdio_ext.h>
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# define c3_fpurge __fpurge
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# elif defined(U3_OS_bsd) || defined(U3_OS_osx)
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# define c3_fpurge fpurge
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# else
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# error "port: fpurge"
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# endif
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/* Stat struct
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*/
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# if defined(U3_OS_linux)
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# define c3_stat_mtime(dp) (u3_time_t_in_ts((dp)->st_mtime))
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# elif defined(U3_OS_osx)
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# define c3_stat_mtime(dp) (u3_time_in_ts(&((dp)->st_mtimespec)))
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# define lseek64 lseek
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# elif defined(U3_OS_bsd)
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# define c3_stat_mtime(dp) (u3_time_in_ts(&((dp)->st_mtim)))
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# define lseek64 lseek
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# else
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# error "port: timeconvert"
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# endif
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/* Entropy
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*/
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# if defined(U3_OS_bsd) && defined(__OpenBSD__)
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# define c3_rand(rd) (getentropy((void*)rd, 64) == 0 ? \
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(void)0 : c3_assert(!"ent"))
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# else
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# define c3_rand u3_sist_rand
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# endif
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