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https://github.com/c64scene-ar/llvm-6502.git
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296f55f618
Previously, DataTypes.h would #define a variety of symbols any time they weren't already defined. However, some versions of Visual Studio do provide the appropriate headers, so if those headers are included after DataTypes.h, it can lead to macro redefinition warnings. The fix is to include the appropriate headers if they exist, and only #define the symbols if the required header does not exist. Patch by Zachary Turner! --- The big change here is that we no longer have our own stdint.h typedefs because now all supported toolchains have stdint.h. Hooray! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209760 91177308-0d34-0410-b5e6-96231b3b80d8
130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
/*===-- include/Support/DataTypes.h - Define fixed size types -----*- C -*-===*\
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|* *|
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|* The LLVM Compiler Infrastructure *|
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|* *|
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|* This file is distributed under the University of Illinois Open Source *|
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|* License. See LICENSE.TXT for details. *|
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|* *|
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|*===----------------------------------------------------------------------===*|
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|* *|
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|* This file contains definitions to figure out the size of _HOST_ data types.*|
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|* This file is important because different host OS's define different macros,*|
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|* which makes portability tough. This file exports the following *|
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|* definitions: *|
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|* *|
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|* [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types*|
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|* [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values. *|
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|* *|
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|* No library is required when using these functions. *|
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|* *|
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|*===----------------------------------------------------------------------===*/
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/* Please leave this file C-compatible. */
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/* Please keep this file in sync with DataTypes.h.cmake */
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#ifndef SUPPORT_DATATYPES_H
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#define SUPPORT_DATATYPES_H
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#undef HAVE_INTTYPES_H
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#undef HAVE_STDINT_H
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#undef HAVE_UINT64_T
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#undef HAVE_U_INT64_T
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#ifdef __cplusplus
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#include <cmath>
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#else
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#include <math.h>
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#endif
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#ifdef HAVE_INTTYPES_H
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#include <inttypes.h>
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#endif
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#else
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#error "Compiler must provide an implementation of stdint.h"
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#endif
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#ifndef _MSC_VER
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/* Note that this header's correct operation depends on __STDC_LIMIT_MACROS
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being defined. We would define it here, but in order to prevent Bad Things
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happening when system headers or C++ STL headers include stdint.h before we
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define it here, we define it on the g++ command line (in Makefile.rules). */
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#if !defined(__STDC_LIMIT_MACROS)
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# error "Must #define __STDC_LIMIT_MACROS before #including Support/DataTypes.h"
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#endif
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#if !defined(__STDC_CONSTANT_MACROS)
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# error "Must #define __STDC_CONSTANT_MACROS before " \
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"#including Support/DataTypes.h"
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#endif
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/* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
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#include <sys/types.h>
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#ifdef _AIX
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#include "llvm/Support/AIXDataTypesFix.h"
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#endif
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/* Handle incorrect definition of uint64_t as u_int64_t */
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#ifndef HAVE_UINT64_T
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#ifdef HAVE_U_INT64_T
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typedef u_int64_t uint64_t;
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#else
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# error "Don't have a definition for uint64_t on this platform"
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#endif
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#endif
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#else /* _MSC_VER */
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#include <stdlib.h>
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#include <stddef.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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#include <cmath>
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#else
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#include <math.h>
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#endif
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#if defined(_WIN64)
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typedef signed __int64 ssize_t;
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#else
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typedef signed int ssize_t;
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#endif /* _WIN64 */
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#ifndef HAVE_INTTYPES_H
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#define PRId64 "I64d"
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#define PRIi64 "I64i"
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#define PRIo64 "I64o"
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#define PRIu64 "I64u"
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#define PRIx64 "I64x"
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#define PRIX64 "I64X"
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#endif /* HAVE_INTTYPES_H */
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#endif /* _MSC_VER */
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/* Set defaults for constants which we cannot find. */
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#if !defined(INT64_MAX)
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# define INT64_MAX 9223372036854775807LL
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#endif
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#if !defined(INT64_MIN)
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# define INT64_MIN ((-INT64_MAX)-1)
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#endif
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#if !defined(UINT64_MAX)
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# define UINT64_MAX 0xffffffffffffffffULL
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#endif
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#if __GNUC__ > 3
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#define END_WITH_NULL __attribute__((sentinel))
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#else
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#define END_WITH_NULL
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#endif
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#ifndef HUGE_VALF
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#define HUGE_VALF (float)HUGE_VAL
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#endif
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#endif /* SUPPORT_DATATYPES_H */
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