diff options
Diffstat (limited to 'lib/nimbase.h')
| -rw-r--r-- | lib/nimbase.h | 439 |
1 files changed, 309 insertions, 130 deletions
diff --git a/lib/nimbase.h b/lib/nimbase.h index bba5ac023..cf0c8002b 100644 --- a/lib/nimbase.h +++ b/lib/nimbase.h @@ -10,20 +10,71 @@ /* compiler symbols: __BORLANDC__ _MSC_VER -__WATCOMC__ -__LCC__ __GNUC__ -__DMC__ -__POCC__ __TINYC__ __clang__ +__AVR__ +__arm__ +__EMSCRIPTEN__ */ #ifndef NIMBASE_H #define NIMBASE_H -#if defined(__GNUC__) +/*------------ declaring a custom attribute to support using LLVM's Address Sanitizer ------------ */ + +/* + This definition exists to provide support for using the LLVM ASAN (Address SANitizer) tooling with Nim. This + should only be used to mark implementations of the GC system that raise false flags with the ASAN tooling, or + for functions that are hot and need to be disabled for performance reasons. Based on the official ASAN + documentation, both the clang and gcc compilers are supported. In addition to that, a check is performed to + verify that the necessary attribute is supported by the compiler. + + To flag a proc as ignored, append the following code pragma to the proc declaration: + {.codegenDecl: "CLANG_NO_SANITIZE_ADDRESS $# $#$#".} + + For further information, please refer to the official documentation: + https://github.com/google/sanitizers/wiki/AddressSanitizer + */ +#define CLANG_NO_SANITIZE_ADDRESS +#if defined(__clang__) +# if __has_attribute(no_sanitize_address) +# undef CLANG_NO_SANITIZE_ADDRESS +# define CLANG_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address)) +# endif +#endif + + +/* ------------ ignore typical warnings in Nim-generated files ------------- */ +#if defined(__GNUC__) || defined(__clang__) +# pragma GCC diagnostic ignored "-Wpragmas" +# pragma GCC diagnostic ignored "-Wwritable-strings" +# pragma GCC diagnostic ignored "-Winvalid-noreturn" +# pragma GCC diagnostic ignored "-Wformat" +# pragma GCC diagnostic ignored "-Wlogical-not-parentheses" +# pragma GCC diagnostic ignored "-Wlogical-op-parentheses" +# pragma GCC diagnostic ignored "-Wshadow" +# pragma GCC diagnostic ignored "-Wunused-function" +# pragma GCC diagnostic ignored "-Wunused-variable" +# pragma GCC diagnostic ignored "-Winvalid-offsetof" +# pragma GCC diagnostic ignored "-Wtautological-compare" +# pragma GCC diagnostic ignored "-Wswitch-bool" +# pragma GCC diagnostic ignored "-Wmacro-redefined" +# pragma GCC diagnostic ignored "-Wincompatible-pointer-types-discards-qualifiers" +# pragma GCC diagnostic ignored "-Wpointer-bool-conversion" +# pragma GCC diagnostic ignored "-Wconstant-conversion" +#endif + +#if defined(_MSC_VER) +# pragma warning(disable: 4005 4100 4101 4189 4191 4200 4244 4293 4296 4309) +# pragma warning(disable: 4310 4365 4456 4477 4514 4574 4611 4668 4702 4706) +# pragma warning(disable: 4710 4711 4774 4800 4809 4820 4996 4090 4297) +#endif +/* ------------------------------------------------------------------------- */ + +#if defined(__GNUC__) && !defined(__ZEPHYR__) +/* Zephyr does some magic in it's headers that override the GCC stdlib. This breaks that. */ # define _GNU_SOURCE 1 #endif @@ -36,11 +87,8 @@ __clang__ #endif /* calling convention mess ----------------------------------------------- */ -#if defined(__GNUC__) || defined(__LCC__) || defined(__POCC__) \ - || defined(__TINYC__) +#if defined(__GNUC__) || defined(__TINYC__) /* these should support C99's inline */ - /* the test for __POCC__ has to come before the test for _MSC_VER, - because PellesC defines _MSC_VER too. This is brain-dead. */ # define N_INLINE(rettype, name) inline rettype name #elif defined(__BORLANDC__) || defined(_MSC_VER) /* Borland's compiler is really STRANGE here; note that the __fastcall @@ -48,33 +96,52 @@ __clang__ the return type, so we do not handle this mess in the code generator but rather here. */ # define N_INLINE(rettype, name) __inline rettype name -#elif defined(__DMC__) -# define N_INLINE(rettype, name) inline rettype name -#elif defined(__WATCOMC__) -# define N_INLINE(rettype, name) __inline rettype name #else /* others are less picky: */ # define N_INLINE(rettype, name) rettype __inline name #endif -#if defined(__POCC__) -# define NIM_CONST /* PCC is really picky with const modifiers */ -# undef _MSC_VER /* Yeah, right PCC defines _MSC_VER even if it is - not that compatible. Well done. */ -#elif defined(__cplusplus) +#define N_INLINE_PTR(rettype, name) rettype (*name) + +#if defined(__cplusplus) # define NIM_CONST /* C++ is picky with const modifiers */ #else # define NIM_CONST const #endif -#if (defined(WIN32) || defined(_WIN32) || defined(__WIN32__)) +/* + NIM_THREADVAR declaration based on + http://stackoverflow.com/questions/18298280/how-to-declare-a-variable-as-thread-local-portably +*/ +#if defined _WIN32 +# if defined _MSC_VER || defined __BORLANDC__ +# define NIM_THREADVAR __declspec(thread) +# else +# define NIM_THREADVAR __thread +# endif +#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112 && !defined __STDC_NO_THREADS__ +# define NIM_THREADVAR _Thread_local +#elif defined _WIN32 && ( \ + defined _MSC_VER || \ + defined __ICL || \ + defined __BORLANDC__ ) # define NIM_THREADVAR __declspec(thread) -#else +#elif defined(__TINYC__) || defined(__GENODE__) +# define NIM_THREADVAR +/* note that ICC (linux) and Clang are covered by __GNUC__ */ +#elif defined __GNUC__ || \ + defined __SUNPRO_C || \ + defined __xlC__ # define NIM_THREADVAR __thread +#else +# error "Cannot define NIM_THREADVAR" +#endif + +#if defined(__cplusplus) + #define NIM_THREAD_LOCAL thread_local #endif /* --------------- how int64 constants should be declared: ----------- */ -#if defined(__GNUC__) || defined(__LCC__) || \ - defined(__POCC__) || defined(__DMC__) || defined(_MSC_VER) +#if defined(__GNUC__) || defined(_MSC_VER) # define IL64(x) x##LL #else /* works only without LL */ # define IL64(x) ((NI64)x) @@ -88,28 +155,40 @@ __clang__ # define NIM_CAST(type, ptr) ((type)(ptr)) #endif + /* ------------------------------------------------------------------- */ +#ifdef __cplusplus +# define NIM_EXTERNC extern "C" +#else +# define NIM_EXTERNC +#endif #if defined(WIN32) || defined(_WIN32) /* only Windows has this mess... */ +# define N_LIB_PRIVATE # define N_CDECL(rettype, name) rettype __cdecl name # define N_STDCALL(rettype, name) rettype __stdcall name # define N_SYSCALL(rettype, name) rettype __syscall name # define N_FASTCALL(rettype, name) rettype __fastcall name -# define N_SAFECALL(rettype, name) rettype __safecall name +# define N_THISCALL(rettype, name) rettype __thiscall name +# define N_SAFECALL(rettype, name) rettype __stdcall name /* function pointers with calling convention: */ # define N_CDECL_PTR(rettype, name) rettype (__cdecl *name) # define N_STDCALL_PTR(rettype, name) rettype (__stdcall *name) # define N_SYSCALL_PTR(rettype, name) rettype (__syscall *name) # define N_FASTCALL_PTR(rettype, name) rettype (__fastcall *name) -# define N_SAFECALL_PTR(rettype, name) rettype (__safecall *name) +# define N_THISCALL_PTR(rettype, name) rettype (__thiscall *name) +# define N_SAFECALL_PTR(rettype, name) rettype (__stdcall *name) -# ifdef __cplusplus -# define N_LIB_EXPORT extern "C" __declspec(dllexport) +# ifdef __EMSCRIPTEN__ +# define N_LIB_EXPORT NIM_EXTERNC __declspec(dllexport) __attribute__((used)) +# define N_LIB_EXPORT_VAR __declspec(dllexport) __attribute__((used)) # else -# define N_LIB_EXPORT extern __declspec(dllexport) +# define N_LIB_EXPORT NIM_EXTERNC __declspec(dllexport) +# define N_LIB_EXPORT_VAR __declspec(dllexport) # endif # define N_LIB_IMPORT extern __declspec(dllimport) #else +# define N_LIB_PRIVATE __attribute__((visibility("hidden"))) # if defined(__GNUC__) # define N_CDECL(rettype, name) rettype name # define N_STDCALL(rettype, name) rettype name @@ -135,10 +214,12 @@ __clang__ # define N_FASTCALL_PTR(rettype, name) rettype (*name) # define N_SAFECALL_PTR(rettype, name) rettype (*name) # endif -# ifdef __cplusplus -# define N_LIB_EXPORT extern "C" +# ifdef __EMSCRIPTEN__ +# define N_LIB_EXPORT NIM_EXTERNC __attribute__((visibility("default"), used)) +# define N_LIB_EXPORT_VAR __attribute__((visibility("default"), used)) # else -# define N_LIB_EXPORT extern +# define N_LIB_EXPORT NIM_EXTERNC __attribute__((visibility("default"))) +# define N_LIB_EXPORT_VAR __attribute__((visibility("default"))) # endif # define N_LIB_IMPORT extern #endif @@ -148,7 +229,7 @@ __clang__ #define N_NOCONV_PTR(rettype, name) rettype (*name) #if defined(__GNUC__) || defined(__ICC__) -# define N_NOINLINE(rettype, name) rettype __attribute__((noinline)) name +# define N_NOINLINE(rettype, name) rettype __attribute__((__noinline__)) name #elif defined(_MSC_VER) # define N_NOINLINE(rettype, name) __declspec(noinline) rettype name #else @@ -157,8 +238,7 @@ __clang__ #define N_NOINLINE_PTR(rettype, name) rettype (*name) -#if defined(__BORLANDC__) || defined(__WATCOMC__) || \ - defined(__POCC__) || defined(_MSC_VER) || defined(WIN32) || defined(_WIN32) +#if defined(__BORLANDC__) || defined(_MSC_VER) || defined(WIN32) || defined(_WIN32) /* these compilers have a fastcall so use it: */ # ifdef __TINYC__ # define N_NIMCALL(rettype, name) rettype __attribute((__fastcall)) name @@ -180,83 +260,174 @@ __clang__ /* ----------------------------------------------------------------------- */ +#define COMMA , + #include <limits.h> #include <stddef.h> +// define NIM_STATIC_ASSERT +// example use case: CT sizeof for importc types verification +// where we have {.completeStruct.} (or lack of {.incompleteStruct.}) +#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) +#define NIM_STATIC_ASSERT(x, msg) _Static_assert((x), msg) +#elif defined(__cplusplus) +#define NIM_STATIC_ASSERT(x, msg) static_assert((x), msg) +#else +#define _NIM_STATIC_ASSERT_FINAL(x, append_name) typedef int NIM_STATIC_ASSERT_AUX ## append_name[(x) ? 1 : -1]; +#define _NIM_STATIC_ASSERT_STAGE_3(x, line) _NIM_STATIC_ASSERT_FINAL(x, _AT_LINE_##line) +#define _NIM_STATIC_ASSERT_STAGE_2(x, line) _NIM_STATIC_ASSERT_STAGE_3(x, line) +#define NIM_STATIC_ASSERT(x, msg) _NIM_STATIC_ASSERT_STAGE_2(x,__LINE__) +// On failure, your C compiler will say something like: +// "error: 'NIM_STATIC_ASSERT_AUX_AT_LINE_XXX' declared as an array with a negative size" +// Adding the line number helps to avoid redefinitions which are not allowed in +// old GCC versions, however the order of evaluation for __LINE__ is a little tricky, +// hence all the helper macros. See https://stackoverflow.com/a/3385694 for more info. +#endif + /* C99 compiler? */ -#if (defined(__STD_VERSION__) && (__STD_VERSION__ >= 199901)) +#if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)) # define HAVE_STDINT_H #endif -#if defined(__LCC__) || defined(__DMC__) || defined(__POCC__) +/* Known compiler with stdint.h that doesn't fit the general pattern? */ +#if defined(__AVR__) || (defined(__cplusplus) && (__cplusplus < 201103)) # define HAVE_STDINT_H #endif +#if (!defined(HAVE_STDINT_H) && defined(__cplusplus) && (__cplusplus >= 201103)) +# define HAVE_CSTDINT +#endif + + +/* wrap all Nim typedefs into namespace Nim */ +#ifdef USE_NIM_NAMESPACE +#ifdef HAVE_CSTDINT +#include <cstdint> +#else +#include <stdint.h> +#endif +namespace USE_NIM_NAMESPACE { +#endif + +// preexisting check, seems paranoid, maybe remove +#if defined(NIM_TRUE) || defined(NIM_FALSE) || defined(NIM_BOOL) +#error "nim reserved preprocessor macros clash" +#endif + /* bool types (C++ has it): */ #ifdef __cplusplus -# ifndef NIM_TRUE -# define NIM_TRUE true -# endif -# ifndef NIM_FALSE -# define NIM_FALSE false -# endif -# define NIM_BOOL bool -# define NIM_NIL 0 -struct NimException -{ - NimException(struct Exception* exp, const char* msg): exp(exp), msg(msg) {} - - struct Exception* exp; - const char* msg; -}; +#define NIM_BOOL bool +#elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901) +// see #13798: to avoid conflicts for code emitting `#include <stdbool.h>` +#define NIM_BOOL _Bool #else -# ifdef bool -# define NIM_BOOL bool +typedef unsigned char NIM_BOOL; // best effort +#endif + +NIM_STATIC_ASSERT(sizeof(NIM_BOOL) == 1, ""); // check whether really needed +NIM_STATIC_ASSERT(CHAR_BIT == 8, ""); + // fail fast for (rare) environments where this doesn't hold, as some implicit + // assumptions would need revisiting (e.g. `uint8` or https://github.com/nim-lang/Nim/pull/18505) + +#define NIM_TRUE true +#define NIM_FALSE false + +#ifdef __cplusplus +# if __cplusplus >= 201103L +# /* nullptr is more type safe (less implicit conversions than 0) */ +# define NIM_NIL nullptr # else - typedef unsigned char NIM_BOOL; -# endif -# ifndef NIM_TRUE -# define NIM_TRUE ((NIM_BOOL) 1) -# endif -# ifndef NIM_FALSE -# define NIM_FALSE ((NIM_BOOL) 0) +# // both `((void*)0)` and `NULL` would cause codegen to emit +# // error: assigning to 'Foo *' from incompatible type 'void *' +# // but codegen could be fixed if need. See also potential caveat regarding +# // NULL. +# // However, `0` causes other issues, see #13798 +# define NIM_NIL 0 # endif +#else +# include <stdbool.h> # define NIM_NIL ((void*)0) /* C's NULL is fucked up in some C compilers, so the generated code does not rely on it anymore */ #endif -#if defined(__BORLANDC__) || defined(__DMC__) \ - || defined(__WATCOMC__) || defined(_MSC_VER) +#if defined(__BORLANDC__) || defined(_MSC_VER) typedef signed char NI8; typedef signed short int NI16; typedef signed int NI32; +typedef __int64 NI64; /* XXX: Float128? */ typedef unsigned char NU8; typedef unsigned short int NU16; -typedef unsigned __int64 NU64; -typedef __int64 NI64; typedef unsigned int NU32; +typedef unsigned __int64 NU64; #elif defined(HAVE_STDINT_H) +#ifndef USE_NIM_NAMESPACE # include <stdint.h> +#endif typedef int8_t NI8; typedef int16_t NI16; typedef int32_t NI32; typedef int64_t NI64; -typedef uint64_t NU64; typedef uint8_t NU8; typedef uint16_t NU16; typedef uint32_t NU32; +typedef uint64_t NU64; +#elif defined(HAVE_CSTDINT) +#ifndef USE_NIM_NAMESPACE +# include <cstdint> +#endif +typedef std::int8_t NI8; +typedef std::int16_t NI16; +typedef std::int32_t NI32; +typedef std::int64_t NI64; +typedef std::uint8_t NU8; +typedef std::uint16_t NU16; +typedef std::uint32_t NU32; +typedef std::uint64_t NU64; +#else +/* Unknown compiler/version, do our best */ +#ifdef __INT8_TYPE__ +typedef __INT8_TYPE__ NI8; #else typedef signed char NI8; +#endif +#ifdef __INT16_TYPE__ +typedef __INT16_TYPE__ NI16; +#else typedef signed short int NI16; +#endif +#ifdef __INT32_TYPE__ +typedef __INT32_TYPE__ NI32; +#else typedef signed int NI32; +#endif +#ifdef __INT64_TYPE__ +typedef __INT64_TYPE__ NI64; +#else +typedef long long int NI64; +#endif /* XXX: Float128? */ +#ifdef __UINT8_TYPE__ +typedef __UINT8_TYPE__ NU8; +#else typedef unsigned char NU8; +#endif +#ifdef __UINT16_TYPE__ +typedef __UINT16_TYPE__ NU16; +#else typedef unsigned short int NU16; -typedef unsigned long long int NU64; -typedef long long int NI64; +#endif +#ifdef __UINT32_TYPE__ +typedef __UINT32_TYPE__ NU32; +#else typedef unsigned int NU32; #endif +#ifdef __UINT64_TYPE__ +typedef __UINT64_TYPE__ NU64; +#else +typedef unsigned long long int NU64; +#endif +#endif #ifdef NIM_INTBITS # if NIM_INTBITS == 64 @@ -276,7 +447,12 @@ typedef NU8 NU; # endif #endif +// for now there isn't an easy way for C code to reach the program result +// when hot code reloading is ON - users will have to: +// load the nimhcr.dll, get the hcrGetGlobal proc from there and use it +#ifndef NIM_HOT_CODE_RELOADING extern NI nim_program_result; +#endif typedef float NF32; typedef double NF64; @@ -291,31 +467,18 @@ typedef char* NCSTRING; # define NIM_IMAN 0 #endif -static N_INLINE(NI, float64ToInt32)(double x) { - /* nowadays no hack necessary anymore */ - return x >= 0 ? (NI)(x+0.5) : (NI)(x-0.5); -} - -static N_INLINE(NI32, float32ToInt32)(float x) { - /* nowadays no hack necessary anymore */ - return x >= 0 ? (NI32)(x+0.5) : (NI32)(x-0.5); -} - -#define float64ToInt64(x) ((NI64) (x)) - -#define zeroMem(a, size) memset(a, 0, size) -#define equalMem(a, b, size) (memcmp(a, b, size) == 0) +#define NIM_STRLIT_FLAG ((NU)(1) << ((NIM_INTBITS) - 2)) /* This has to be the same as system.strlitFlag! */ #define STRING_LITERAL(name, str, length) \ - static const struct { \ - TGenericSeq Sup; \ - NIM_CHAR data[(length) + 1]; \ - } name = {{length, length}, str} - -typedef struct TStringDesc* string; + static const struct { \ + TGenericSeq Sup; \ + NIM_CHAR data[(length) + 1]; \ + } name = {{length, (NI) ((NU)length | NIM_STRLIT_FLAG)}, str} /* declared size of a sequence/variable length array: */ -#if defined(__GNUC__) || defined(__clang__) || defined(_MSC_VER) +#if defined(__cplusplus) && defined(__clang__) +# define SEQ_DECL_SIZE 1 +#elif defined(__GNUC__) || defined(_MSC_VER) # define SEQ_DECL_SIZE /* empty is correct! */ #else # define SEQ_DECL_SIZE 1000000 @@ -324,18 +487,15 @@ typedef struct TStringDesc* string; #define ALLOC_0(size) calloc(1, size) #define DL_ALLOC_0(size) dlcalloc(1, size) -#define GenericSeqSize sizeof(TGenericSeq) #define paramCount() cmdCount -#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__i386__) -# ifndef NAN -static unsigned long nimNaN[2]={0xffffffff, 0x7fffffff}; -# define NAN (*(double*) nimNaN) -# endif -#endif - +// NAN definition copied from math.h included in the Windows SDK version 10.0.14393.0 #ifndef NAN -# define NAN (0.0 / 0.0) +# ifndef _HUGE_ENUF +# define _HUGE_ENUF 1e+300 // _HUGE_ENUF*_HUGE_ENUF must overflow +# endif +# define NAN_INFINITY ((float)(_HUGE_ENUF * _HUGE_ENUF)) +# define NAN ((float)(NAN_INFINITY * 0.0F)) #endif #ifndef INF @@ -351,50 +511,30 @@ static unsigned long nimNaN[2]={0xffffffff, 0x7fffffff}; # endif #endif -typedef struct TFrame TFrame; -struct TFrame { +typedef struct TFrame_ TFrame; +struct TFrame_ { TFrame* prev; NCSTRING procname; NI line; NCSTRING filename; NI16 len; NI16 calldepth; + NI frameMsgLen; }; -#define nimfr(proc, file) \ - TFrame FR; \ - FR.procname = proc; FR.filename = file; FR.line = 0; FR.len = 0; nimFrame(&FR); - -#define nimfrs(proc, file, slots, length) \ - struct {TFrame* prev;NCSTRING procname;NI line;NCSTRING filename; NI len; VarSlot s[slots];} FR; \ - FR.procname = proc; FR.filename = file; FR.line = 0; FR.len = length; nimFrame((TFrame*)&FR); - -#define nimln(n, file) \ - FR.line = n; FR.filename = file; - #define NIM_POSIX_INIT __attribute__((constructor)) -#if defined(_MSCVER) && defined(__i386__) -__declspec(naked) int __fastcall NimXadd(volatile int* pNum, int val) { - __asm { - lock xadd dword ptr [ECX], EDX - mov EAX, EDX - ret - } -} -#endif - #ifdef __GNUC__ -# define likely(x) __builtin_expect(x, 1) -# define unlikely(x) __builtin_expect(x, 0) +# define NIM_LIKELY(x) __builtin_expect(x, 1) +# define NIM_UNLIKELY(x) __builtin_expect(x, 0) /* We need the following for the posix wrapper. In particular it will give us POSIX_SPAWN_USEVFORK: */ # ifndef _GNU_SOURCE # define _GNU_SOURCE # endif #else -# define likely(x) (x) -# define unlikely(x) (x) +# define NIM_LIKELY(x) (x) +# define NIM_UNLIKELY(x) (x) #endif #if 0 // defined(__GNUC__) || defined(__clang__) @@ -406,16 +546,19 @@ static inline void GCGuard (void *ptr) { asm volatile ("" :: "X" (ptr)); } # define GC_GUARD #endif -/* Test to see if Nim and the C compiler agree on the size of a pointer. - On disagreement, your C compiler will say something like: - "error: 'assert_numbits' declared as an array with a negative size" */ -typedef int assert_numbits[sizeof(NI) == sizeof(void*) && NIM_INTBITS == sizeof(NI)*8 ? 1 : -1]; +// Test to see if Nim and the C compiler agree on the size of a pointer. +NIM_STATIC_ASSERT(sizeof(NI) == sizeof(void*) && NIM_INTBITS == sizeof(NI)*8, "Pointer size mismatch between Nim and C/C++ backend. You probably need to setup the backend compiler for target CPU."); + +#ifdef USE_NIM_NAMESPACE +} #endif -#ifdef __cplusplus -# define NIM_EXTERNC extern "C" +#if defined(_MSC_VER) +# define NIM_ALIGN(x) __declspec(align(x)) +# define NIM_ALIGNOF(x) __alignof(x) #else -# define NIM_EXTERNC +# define NIM_ALIGN(x) __attribute__((aligned(x))) +# define NIM_ALIGNOF(x) __alignof__(x) #endif /* ---------------- platform specific includes ----------------------- */ @@ -428,3 +571,39 @@ typedef int assert_numbits[sizeof(NI) == sizeof(void*) && NIM_INTBITS == sizeof( #elif defined(__FreeBSD__) # include <sys/types.h> #endif + +/* these exist to make the codegen logic simpler */ +#define nimModInt(a, b, res) (((*res) = (a) % (b)), 0) +#define nimModInt64(a, b, res) (((*res) = (a) % (b)), 0) + +#if (!defined(_MSC_VER) || defined(__clang__)) && !defined(NIM_EmulateOverflowChecks) + /* these exist because we cannot have .compilerProcs that are importc'ed + by a different name */ + + #define nimAddInt64(a, b, res) __builtin_saddll_overflow(a, b, (long long int*)res) + #define nimSubInt64(a, b, res) __builtin_ssubll_overflow(a, b, (long long int*)res) + #define nimMulInt64(a, b, res) __builtin_smulll_overflow(a, b, (long long int*)res) + + #if NIM_INTBITS == 32 + #if defined(__arm__) && defined(__GNUC__) + /* arm-none-eabi-gcc targets defines int32_t as long int */ + #define nimAddInt(a, b, res) __builtin_saddl_overflow(a, b, res) + #define nimSubInt(a, b, res) __builtin_ssubl_overflow(a, b, res) + #define nimMulInt(a, b, res) __builtin_smull_overflow(a, b, res) + #else + #define nimAddInt(a, b, res) __builtin_sadd_overflow(a, b, res) + #define nimSubInt(a, b, res) __builtin_ssub_overflow(a, b, res) + #define nimMulInt(a, b, res) __builtin_smul_overflow(a, b, res) + #endif + #else + /* map it to the 'long long' variant */ + #define nimAddInt(a, b, res) __builtin_saddll_overflow(a, b, (long long int*)res) + #define nimSubInt(a, b, res) __builtin_ssubll_overflow(a, b, (long long int*)res) + #define nimMulInt(a, b, res) __builtin_smulll_overflow(a, b, (long long int*)res) + #endif +#endif + +#define NIM_NOALIAS __restrict +/* __restrict is said to work for all the C(++) compilers out there that we support */ + +#endif /* NIMBASE_H */ |