mirror of
https://github.com/nim-lang/Nim.git
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384 lines
11 KiB
C
384 lines
11 KiB
C
/*
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Nimrod's Runtime Library
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(c) Copyright 2013 Andreas Rumpf
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See the file "copying.txt", included in this
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distribution, for details about the copyright.
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*/
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/* compiler symbols:
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__BORLANDC__
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_MSC_VER
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__WATCOMC__
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__LCC__
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__GNUC__
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__DMC__
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__POCC__
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__TINYC__
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__clang__
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*/
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#ifndef NIMBASE_H
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#define NIMBASE_H
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#if defined(__GNUC__)
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# define _GNU_SOURCE 1
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#endif
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#if defined(__TINYC__)
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/*# define __GNUC__ 3
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# define GCC_MAJOR 4
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# define __GNUC_MINOR__ 4
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# define __GNUC_PATCHLEVEL__ 5 */
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# define __DECLSPEC_SUPPORTED 1
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#endif
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/* calling convention mess ----------------------------------------------- */
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#if defined(__GNUC__) || defined(__LCC__) || defined(__POCC__) \
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|| defined(__TINYC__)
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/* these should support C99's inline */
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/* the test for __POCC__ has to come before the test for _MSC_VER,
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because PellesC defines _MSC_VER too. This is brain-dead. */
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# define N_INLINE(rettype, name) inline rettype name
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#elif defined(__BORLANDC__) || defined(_MSC_VER)
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/* Borland's compiler is really STRANGE here; note that the __fastcall
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keyword cannot be before the return type, but __inline cannot be after
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the return type, so we do not handle this mess in the code generator
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but rather here. */
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# define N_INLINE(rettype, name) __inline rettype name
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#elif defined(__DMC__)
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# define N_INLINE(rettype, name) inline rettype name
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#elif defined(__WATCOMC__)
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# define N_INLINE(rettype, name) __inline rettype name
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#else /* others are less picky: */
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# define N_INLINE(rettype, name) rettype __inline name
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#endif
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#if defined(__POCC__)
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# define NIM_CONST /* PCC is really picky with const modifiers */
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# undef _MSC_VER /* Yeah, right PCC defines _MSC_VER even if it is
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not that compatible. Well done. */
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#elif defined(__cplusplus)
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# define NIM_CONST /* C++ is picky with const modifiers */
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#else
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# define NIM_CONST const
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#endif
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#if (defined(WIN32) || defined(_WIN32) || defined(__WIN32__))
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# define NIM_THREADVAR __declspec(thread)
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#else
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# define NIM_THREADVAR __thread
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#endif
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/* --------------- how int64 constants should be declared: ----------- */
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#if defined(__GNUC__) || defined(__LCC__) || \
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defined(__POCC__) || defined(__DMC__) || defined(_MSC_VER)
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# define IL64(x) x##LL
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#else /* works only without LL */
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# define IL64(x) ((NI64)x)
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#endif
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/* ---------------- casting without correct aliasing rules ----------- */
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#if defined(__GNUC__)
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# define NIM_CAST(type, ptr) (((union{type __x__;}*)(ptr))->__x__)
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#else
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# define NIM_CAST(type, ptr) ((type)(ptr))
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#endif
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/* ------------------------------------------------------------------- */
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#if defined(WIN32) || defined(_WIN32) /* only Windows has this mess... */
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# define N_CDECL(rettype, name) rettype __cdecl name
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# define N_STDCALL(rettype, name) rettype __stdcall name
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# define N_SYSCALL(rettype, name) rettype __syscall name
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# define N_FASTCALL(rettype, name) rettype __fastcall name
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# define N_SAFECALL(rettype, name) rettype __safecall name
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/* function pointers with calling convention: */
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# define N_CDECL_PTR(rettype, name) rettype (__cdecl *name)
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# define N_STDCALL_PTR(rettype, name) rettype (__stdcall *name)
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# define N_SYSCALL_PTR(rettype, name) rettype (__syscall *name)
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# define N_FASTCALL_PTR(rettype, name) rettype (__fastcall *name)
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# define N_SAFECALL_PTR(rettype, name) rettype (__safecall *name)
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# define N_LIB_EXPORT extern __declspec(dllexport)
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# define N_LIB_IMPORT extern __declspec(dllimport)
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#else
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# define N_CDECL(rettype, name) rettype name
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# define N_STDCALL(rettype, name) rettype name
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# define N_SYSCALL(rettype, name) rettype name
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# define N_FASTCALL(rettype, name) rettype name
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# define N_SAFECALL(rettype, name) rettype name
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/* function pointers with calling convention: */
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# define N_CDECL_PTR(rettype, name) rettype (*name)
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# define N_STDCALL_PTR(rettype, name) rettype (*name)
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# define N_SYSCALL_PTR(rettype, name) rettype (*name)
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# define N_FASTCALL_PTR(rettype, name) rettype (*name)
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# define N_SAFECALL_PTR(rettype, name) rettype (*name)
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# define N_LIB_EXPORT extern
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# define N_LIB_IMPORT extern
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#endif
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#define N_NOCONV(rettype, name) rettype name
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/* specify no calling convention */
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#define N_NOCONV_PTR(rettype, name) rettype (*name)
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#if defined(__GNUC__) || defined(__ICC__)
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# define N_NOINLINE(rettype, name) rettype __attribute__((noinline)) name
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#elif defined(_MSC_VER)
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# define N_NOINLINE(rettype, name) __declspec(noinline) rettype name
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#else
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# define N_NOINLINE(rettype, name) rettype name
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#endif
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#define N_NOINLINE_PTR(rettype, name) rettype (*name)
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#if defined(__BORLANDC__) || defined(__WATCOMC__) || \
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defined(__POCC__) || defined(_MSC_VER) || defined(WIN32) || defined(_WIN32)
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/* these compilers have a fastcall so use it: */
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# define N_NIMCALL(rettype, name) rettype __fastcall name
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# define N_NIMCALL_PTR(rettype, name) rettype (__fastcall *name)
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#else
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# define N_NIMCALL(rettype, name) rettype name /* no modifier */
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# define N_NIMCALL_PTR(rettype, name) rettype (*name)
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#endif
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#define N_CLOSURE(rettype, name) N_NIMCALL(rettype, name)
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#define N_CLOSURE_PTR(rettype, name) N_NIMCALL_PTR(rettype, name)
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/* ----------------------------------------------------------------------- */
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#include <limits.h>
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#include <stddef.h>
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/* C99 compiler? */
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#if (defined(__STD_VERSION__) && (__STD_VERSION__ >= 199901))
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# define HAVE_STDINT_H
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#endif
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#if defined(__LCC__) || defined(__DMC__) || defined(__POCC__)
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# define HAVE_STDINT_H
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#endif
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/* bool types (C++ has it): */
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#ifdef __cplusplus
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# ifndef NIM_TRUE
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# define NIM_TRUE true
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# endif
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# ifndef NIM_FALSE
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# define NIM_FALSE false
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# endif
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# define NIM_BOOL bool
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# define NIM_NIL 0
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struct NimException
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{
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NimException(struct E_Base* exp, const char* msg): exp(exp), msg(msg) {}
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struct E_Base* exp;
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const char* msg;
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};
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#else
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# ifdef bool
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# define NIM_BOOL bool
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# else
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typedef unsigned char NIM_BOOL;
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# endif
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# ifndef NIM_TRUE
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# define NIM_TRUE ((NIM_BOOL) 1)
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# endif
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# ifndef NIM_FALSE
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# define NIM_FALSE ((NIM_BOOL) 0)
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# endif
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# define NIM_NIL ((void*)0) /* C's NULL is fucked up in some C compilers, so
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the generated code does not rely on it anymore */
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#endif
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#if defined(__BORLANDC__) || defined(__DMC__) \
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|| defined(__WATCOMC__) || defined(_MSC_VER)
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typedef signed char NI8;
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typedef signed short int NI16;
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typedef signed int NI32;
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/* XXX: Float128? */
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typedef unsigned char NU8;
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typedef unsigned short int NU16;
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typedef unsigned __int64 NU64;
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typedef __int64 NI64;
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typedef unsigned int NU32;
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#elif defined(HAVE_STDINT_H)
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# include <stdint.h>
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typedef int8_t NI8;
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typedef int16_t NI16;
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typedef int32_t NI32;
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typedef int64_t NI64;
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typedef uint64_t NU64;
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typedef uint8_t NU8;
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typedef uint16_t NU16;
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typedef uint32_t NU32;
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#else
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typedef signed char NI8;
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typedef signed short int NI16;
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typedef signed int NI32;
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/* XXX: Float128? */
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typedef unsigned char NU8;
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typedef unsigned short int NU16;
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typedef unsigned long long int NU64;
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typedef long long int NI64;
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typedef unsigned int NU32;
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#endif
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#ifdef NIM_INTBITS
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# if NIM_INTBITS == 64
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typedef NI64 NI;
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typedef NU64 NU;
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# elif NIM_INTBITS == 32
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typedef NI32 NI;
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typedef NU32 NU;
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# elif NIM_INTBITS == 16
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typedef NI16 NI;
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typedef NU16 NU;
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# elif NIM_INTBITS == 8
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typedef NI8 NI;
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typedef NU8 NU;
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# else
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# error "invalid bit width for int"
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# endif
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#endif
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extern NI nim_program_result;
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typedef float NF32;
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typedef double NF64;
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typedef double NF;
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typedef char NIM_CHAR;
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typedef char* NCSTRING;
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#ifdef NIM_BIG_ENDIAN
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# define NIM_IMAN 1
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#else
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# define NIM_IMAN 0
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#endif
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static N_INLINE(NI, float64ToInt32)(double x) {
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/* nowadays no hack necessary anymore */
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return x >= 0 ? (NI)(x+0.5) : (NI)(x-0.5);
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}
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static N_INLINE(NI32, float32ToInt32)(float x) {
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/* nowadays no hack necessary anymore */
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return x >= 0 ? (NI32)(x+0.5) : (NI32)(x-0.5);
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}
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#define float64ToInt64(x) ((NI64) (x))
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#define zeroMem(a, size) memset(a, 0, size)
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#define equalMem(a, b, size) (memcmp(a, b, size) == 0)
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#define STRING_LITERAL(name, str, length) \
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static const struct { \
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TGenericSeq Sup; \
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NIM_CHAR data[(length) + 1]; \
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} name = {{length, length}, str}
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typedef struct TStringDesc* string;
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/* declared size of a sequence/variable length array: */
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#if defined(__GNUC__) || defined(__clang__) || defined(_MSC_VER)
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# define SEQ_DECL_SIZE /* empty is correct! */
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#else
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# define SEQ_DECL_SIZE 1000000
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#endif
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#define ALLOC_0(size) calloc(1, size)
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#define DL_ALLOC_0(size) dlcalloc(1, size)
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#define GenericSeqSize sizeof(TGenericSeq)
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#define paramCount() cmdCount
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#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__i386__)
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# ifndef NAN
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static unsigned long nimNaN[2]={0xffffffff, 0x7fffffff};
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# define NAN (*(double*) nimNaN)
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# endif
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#endif
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#ifndef NAN
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# define NAN (0.0 / 0.0)
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#endif
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#ifndef INF
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# ifdef INFINITY
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# define INF INFINITY
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# elif defined(HUGE_VAL)
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# define INF HUGE_VAL
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# elif defined(_MSC_VER)
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# include <float.h>
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# define INF (DBL_MAX+DBL_MAX)
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# else
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# define INF (1.0 / 0.0)
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# endif
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#endif
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typedef struct TFrame TFrame;
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struct TFrame {
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TFrame* prev;
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NCSTRING procname;
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NI line;
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NCSTRING filename;
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NI len;
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};
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#define nimfr(proc, file) \
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TFrame F; \
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F.procname = proc; F.filename = file; F.line = 0; F.len = 0; nimFrame(&F);
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#define nimfrs(proc, file, slots, length) \
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struct {TFrame* prev;NCSTRING procname;NI line;NCSTRING filename; NI len; TVarSlot s[slots];} F; \
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F.procname = proc; F.filename = file; F.line = 0; F.len = length; nimFrame((TFrame*)&F);
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#define nimln(n, file) \
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F.line = n; F.filename = file;
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#define NIM_POSIX_INIT __attribute__((constructor))
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#if defined(_MSCVER) && defined(__i386__)
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__declspec(naked) int __fastcall NimXadd(volatile int* pNum, int val) {
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__asm {
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lock xadd dword ptr [ECX], EDX
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mov EAX, EDX
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ret
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}
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}
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#endif
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#ifdef __GNUC__
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# define likely(x) __builtin_expect(x, 1)
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# define unlikely(x) __builtin_expect(x, 0)
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/* We need the following for the posix wrapper. In particular it will give us
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POSIX_SPAWN_USEVFORK: */
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# ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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# endif
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#else
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# define likely(x) (x)
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# define unlikely(x) (x)
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#endif
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#if 0 // defined(__GNUC__) || defined(__clang__)
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// not needed anymore because the stack marking cares about
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// interior pointers now
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static inline void GCGuard (void *ptr) { asm volatile ("" :: "X" (ptr)); }
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# define GC_GUARD __attribute__ ((cleanup(GCGuard)))
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#else
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# define GC_GUARD
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#endif
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/* Test to see if nimrod and the C compiler agrees on the size of a pointer.
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On disagreement, your C compiler will say something like:
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"error: 'assert_numbits' declared as an array with a negative size" */
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typedef int assert_numbits[sizeof(NI) == sizeof(void*) && NIM_INTBITS == sizeof(NI)*8 ? 1 : -1];
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#endif
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