shithub: femtolisp

ref: 991160b28f27849a616f39059f79cde0b312e01a
dir: /plan9/platform.h/

#pragma once

#include <u.h>
#include <libc.h>
#include <ctype.h>
#include <mp.h>

#ifdef NDEBUG
#undef assert
#define assert(x)
#endif

#define __os_name__ "plan9"
#define __thread

#define __builtin_prefetch(x)
int __builtin_clz(unsigned int x);

#define MEM_ALLOC(n) malloc(n)
#define MEM_REALLOC(p, n) realloc((p), (n))
#define MEM_FREE(x) free(x)
#define MEM_STRDUP(s) strdup(s)

/* FIXME(sigrid): s*_overflow_* can be more optimal */

#define sadd_overflow_64(a, b, c) ( \
  (b < 1) ? \
  ((INT64_MAX-(b) <= (a)) ? ((*(c)=(a)+(b)), 0) : 1) : \
  ((INT64_MAX-(b) >= (a)) ? ((*(c)=(a)+(b)), 0) : 1) \
)

#define smul_overflow_64(a, b, c) ( \
	((a)>0 ? ((b)>0 ? (a)>INT64_MAX/(b) : (b)<INT64_MIN/(a)) \
	       : ((b)>0 ? (a)<INT64_MIN/(b) : ((a)!=0 && (b)<INT64_MAX/(a)))) \
	? 1 \
	: ((*(c)=(a)*(b)), 0) \
)

#if defined(__amd64__) || \
    defined(__arm64__) || \
    defined(__mips64__) || \
    defined(__power64__) || \
    defined(__sparc64__)
#define BITS64
#define PRIdPTR PRId64
#define sadd_overflow(a, b, c) sadd_overflow_64(a, b, c)
#else
#define PRIdPTR "ld"
#define sadd_overflow(a, b, c) ( \
  (b < 1) ? \
  ((INT32_MAX-(b) <= (a)) ? ((*(c)=(a)+(b)), 0) : 1) : \
  ((INT32_MAX-(b) >= (a)) ? ((*(c)=(a)+(b)), 0) : 1) \
)
#endif

#define unsetenv(name) putenv(name, "")
#define setenv(name, val, overwrite) putenv(name, val)
#define exit(x) exits((x) ? "error" : nil)
#define isnan(x) isNaN(x)

#define getcwd getwd
#define vsnprintf vsnprint
#define vdprintf fprint
#define snprintf snprint
#define strcasecmp cistrcmp
#define lseek seek
#define towupper toupperrune
#define towlower tolowerrune
#define iswalpha isalpharune
#define signbit(r) ((*(uint64_t*)&(r)) & (1ULL<<63))
#define isfinite(d) (((*(uint64_t*)&(d))&0x7ff0000000000000ULL) != 0x7ff0000000000000ULL)

#define PRIu32 "ud"
#define PRId64 "lld"
#define PRIu64 "llud"

#define INT32_MAX 0x7fffffff
#define UINT32_MAX 0xffffffffU
#define INT32_MIN (-INT32_MAX-1)
#define INT64_MIN ((int64_t)0x8000000000000000LL)
#define INT64_MAX 0x7fffffffffffffffLL
#define UINT64_MAX 0xffffffffffffffffULL
#define ULONG_MAX UINT32_MAX

#define PATHSEP '/'
#define PATHSEPSTRING "/"
#define PATHLISTSEP ':'
#define PATHLISTSEPSTRING ":"
#define ISPATHSEP(c) ((c) == '/')

enum {
	SEEK_SET,
	SEEK_CUR,
	SEEK_END,

	STDIN_FILENO = 0,
	STDOUT_FILENO,
	STDERR_FILENO,
};

#define O_RDWR ORDWR
#define O_WRONLY OWRITE
#define O_RDONLY OREAD
#define O_TRUNC OTRUNC
#define F_OK 0

#define LITTLE_ENDIAN 1234
#define BIG_ENDIAN 4321

#if defined(__mips__) || \
    defined(__power__) || defined(__power64__) || \
    defined(__sparc__) || defined(__sparc64__)
#define BYTE_ORDER BIG_ENDIAN
#else
#define BYTE_ORDER LITTLE_ENDIAN
#endif

#define __unlikely(x) (x)
#define __likely(x) (x)

typedef s8int int8_t;
typedef s16int int16_t;
typedef s32int int32_t;
typedef s64int int64_t;
typedef u8int uint8_t;
typedef u16int uint16_t;
typedef u32int uint32_t;
typedef u64int uint64_t;
typedef vlong off_t;
typedef intptr intptr_t;
typedef uintptr uintptr_t;
typedef intptr ssize_t;
typedef uintptr size_t;
typedef enum { false, true } bool;

int wcwidth(Rune c);