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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team, 1998-2004
*
* Various C datatypes used in the run-time system. This is the
* lowest-level include file, after ghcconfig.h and rts/Config.h.
*
* Do not #include this file directly: #include "Rts.h" instead.
*
* To understand the structure of the RTS headers, see the wiki:
* https://gitlab.haskell.org/ghc/ghc/wikis/commentary/source-tree/includes
*
* NOTE: assumes #include "ghcconfig.h"
*
* Works with or without _POSIX_SOURCE.
*
* WARNING: Keep this file, MachDeps.h, and HsFFI.h in synch!
*
* ---------------------------------------------------------------------------*/
#pragma once
#if defined(mingw32_HOST_OS)
# if defined(__USE_MINGW_ANSI_STDIO)
# if __USE_MINGW_ANSI_STDIO != 1
# warning "Mismatch between __USE_MINGW_ANSI_STDIO definitions. \
If using Rts.h make sure it is the first header included."
# endif
# else
/* Inform mingw we want the ISO rather than Windows printf format specifiers. */
# define __USE_MINGW_ANSI_STDIO 1
#endif
#endif
/* ISO C 99 says:
* "C++ implementations should define these macros only when
* __STDC_LIMIT_MACROS is defined before <stdint.h> is included."
*
* So we need to define it for now to compile with C++ compilers.
* However, C++11 does not require it anymore so we can remove this once we
* upgrade to requiring C++11 or newer.
*/
#define __STDC_LIMIT_MACROS
#include <inttypes.h>
/*
* This module should define types *only*, all beginning with "Stg".
*
* Specifically:
StgInt8, 16, 32, 64
StgWord8, 16, 32, 64
StgChar, StgFloat, StgDouble
***** All the same size (i.e. sizeof(void *)): *****
StgPtr Basic pointer type
StgWord Unit of heap allocation
StgInt Signed version of StgWord
StgAddr Generic address type
StgBool, StgVoid, StgPtr, StgOffset,
StgCode, StgStablePtr, StgFunPtr,
StgUnion.
*/
/*
* First, platform-dependent definitions of size-specific integers.
*/
typedef int8_t StgInt8;
typedef uint8_t StgWord8;
#define STG_INT8_MIN INT8_MIN
#define STG_INT8_MAX INT8_MAX
#define STG_WORD8_MAX UINT8_MAX
#define FMT_Word8 PRIu8
#define FMT_HexWord8 PRIx8
typedef int16_t StgInt16;
typedef uint16_t StgWord16;
#define STG_INT16_MIN INT16_MIN
#define STG_INT16_MAX INT16_MAX
#define STG_WORD16_MAX UINT16_MAX
#define FMT_Word16 PRIu16
#define FMT_HexWord16 PRIx16
typedef int32_t StgInt32;
typedef uint32_t StgWord32;
#define STG_INT32_MIN INT32_MIN
#define STG_INT32_MAX INT32_MAX
#define STG_WORD32_MAX UINT32_MAX
#define FMT_Word32 PRIu32
#define FMT_HexWord32 PRIx32
#define FMT_Int32 PRId32
typedef int64_t StgInt64;
typedef uint64_t StgWord64;
#define STG_INT64_MIN INT64_MIN
#define STG_INT64_MAX INT64_MAX
#define STG_WORD64_MAX UINT64_MAX
#define FMT_Word64 PRIu64
#define FMT_HexWord64 PRIx64
#define FMT_Int64 PRId64
typedef struct { StgWord64 h; StgWord64 l; } StgWord128;
typedef struct { StgWord128 h; StgWord128 l; } StgWord256;
typedef struct { StgWord256 h; StgWord256 l; } StgWord512;
/*
* Stg{Int,Word} are defined such that they have the exact same size as a
* void pointer.
*/
#if SIZEOF_VOID_P == 8
typedef int64_t StgInt;
typedef uint64_t StgWord;
typedef int32_t StgHalfInt;
typedef uint32_t StgHalfWord;
#define STG_INT_MIN INT64_MIN
#define STG_INT_MAX INT64_MAX
#define STG_WORD_MAX UINT64_MAX
#define FMT_Word FMT_Word64
#define FMT_HexWord FMT_HexWord64
#define FMT_Int FMT_Int64
#define strToStgWord strtoull
#elif SIZEOF_VOID_P == 4
typedef int32_t StgInt;
typedef uint32_t StgWord;
typedef int16_t StgHalfInt;
typedef uint16_t StgHalfWord;
#define STG_INT_MIN INT32_MIN
#define STG_INT_MAX INT32_MAX
#define STG_WORD_MAX UINT32_MAX
#define FMT_Word FMT_Word32
#define FMT_HexWord FMT_HexWord32
#define FMT_Int FMT_Int32
#define strToStgWord strtoul
#else
#error GHC untested on this architecture: sizeof(void *) != 4 or 8
#endif
#define W_MASK (sizeof(W_)-1)
/*
* Other commonly-used STG datatypes.
*/
typedef void* StgAddr;
typedef StgWord32 StgChar;
typedef int StgBool;
typedef float StgFloat;
typedef double StgDouble;
typedef StgWord* StgPtr; /* heap or stack pointer */
typedef StgWord volatile* StgVolatilePtr; /* pointer to volatile word */
typedef StgWord StgOffset; /* byte offset within closure */
typedef StgWord8 StgCode; /* close enough */
typedef void* StgStablePtr;
typedef StgWord8* StgByteArray;
/*
Types for generated C functions when compiling via C.
The C functions take no arguments, and return a pointer to the next
function to be called use: Ptr to Fun that returns a Ptr to Fun
which returns Ptr to void
Note: Neither StgFunPtr not StgFun is quite right (that is,
StgFunPtr != StgFun*). So, the functions we define all have type
StgFun but we always have to cast them to StgFunPtr when we assign
them to something.
The only way round this would be to write a recursive type but
C only allows that if you're defining a struct or union.
*/
typedef void *(*(*StgFunPtr)(void))(void);
typedef StgFunPtr StgFun(void);
/*
* Forward declarations for the unregisterised backend, which
* only depends upon Stg.h and not the entirety of Rts.h, which
* is where these are defined.
*/
struct StgClosure_;
struct StgThunk_;
struct Capability_;
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