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Move some MSVC-specific defines to platform.h

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This commit is contained in:
ISSOtm
2020-08-31 16:29:51 +02:00
parent 138523570e
commit 8e7afb0ab3
2 changed files with 49 additions and 43 deletions
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7
include/platform.h
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@@ -32,4 +32,11 @@
# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
#endif
/* MSVC doesn't use POSIX types or defines for `read` */
#ifdef _MSC_VER
# define STDIN_FILENO 0
# define ssize_t int
# define SSIZE_MAX INT_MAX
#endif
#endif /* RGBDS_PLATFORM_H */

85
src/asm/lexer.c
View File

@@ -22,7 +22,7 @@
#include <unistd.h>
#include "extern/utf8decoder.h"
#include "platform.h" /* For `mmap` */
#include "platform.h" /* For `ssize_t` */
#include "asm/asm.h"
#include "asm/lexer.h"
@@ -42,6 +42,47 @@
#define dbgPrint(...)
#endif
/* Neither MSVC nor MinGW provide `mmap` */
#if defined(_MSC_VER) || defined(__MINGW32__)
# include <windows.h>
# include <fileapi.h>
# include <winbase.h>
# define MAP_FAILED NULL
# define mapFile(ptr, fd, path, size) do { \
(ptr) = MAP_FAILED; \
HANDLE file = CreateFileA(path, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, \
FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_RANDOM_ACCESS, NULL); \
HANDLE mappingObj; \
\
if (file == INVALID_HANDLE_VALUE) \
break; \
mappingObj = CreateFileMappingA(file, NULL, PAGE_READONLY, 0, 0, NULL); \
if (mappingObj != INVALID_HANDLE_VALUE) \
(ptr) = MapViewOfFile(mappingObj, FILE_MAP_READ, 0, 0, 0); \
CloseHandle(mappingObj); \
CloseHandle(file); \
} while (0)
# define munmap(ptr, size) UnmapViewOfFile((ptr))
#else /* defined(_MSC_VER) || defined(__MINGW32__) */
# include <sys/mman.h>
# define mapFile(ptr, fd, path, size) do { \
(ptr) = mmap(NULL, (size), PROT_READ, MAP_PRIVATE, (fd), 0); \
\
if ((ptr) == MAP_FAILED && errno == ENOTSUP) { \
/*
* The implementation may not support MAP_PRIVATE; try again with MAP_SHARED
* instead, offering, I believe, weaker guarantees about external modifications to
* the file while reading it. That's still better than not opening it at all, though
*/ \
if (verbose) \
printf("mmap(%s, MAP_PRIVATE) failed, retrying with MAP_SHARED\n", path); \
(ptr) = mmap(NULL, (size), PROT_READ, MAP_SHARED, (fd), 0); \
} \
} while (0)
#endif /* !( defined(_MSC_VER) || defined(__MINGW32__) ) */
/*
* Identifiers that are also keywords are listed here. This ONLY applies to ones
* that would normally be matched as identifiers! Check out `yylex_NORMAL` to
@@ -313,48 +354,6 @@ static void initState(struct LexerState *state)
state->expansionOfs = 0;
}
/* Neither MSVC nor MinGW provide `mmap` */
#if defined(_MSC_VER) || defined(__MINGW32__)
# include <windows.h>
# include <fileapi.h>
# include <winbase.h>
# define MAP_FAILED NULL
# define mapFile(ptr, fd, path, size) do { \
(ptr) = MAP_FAILED; \
HANDLE file = CreateFileA(path, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, \
FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_RANDOM_ACCESS, NULL); \
HANDLE mappingObj; \
\
if (file == INVALID_HANDLE_VALUE) \
break; \
mappingObj = CreateFileMappingA(file, NULL, PAGE_READONLY, 0, 0, NULL); \
if (mappingObj != INVALID_HANDLE_VALUE) \
(ptr) = MapViewOfFile(mappingObj, FILE_MAP_READ, 0, 0, 0); \
CloseHandle(mappingObj); \
CloseHandle(file); \
} while (0)
# define munmap(ptr, size) UnmapViewOfFile((ptr))
#else /* defined(_MSC_VER) || defined(__MINGW32__) */
# include <sys/mman.h>
# define mapFile(ptr, fd, path, size) do { \
(ptr) = mmap(NULL, (size), PROT_READ, MAP_PRIVATE, (fd), 0); \
\
if ((ptr) == MAP_FAILED && errno == ENOTSUP) { \
/*
* The implementation may not support MAP_PRIVATE; try again with MAP_SHARED
* instead, offering, I believe, weaker guarantees about external
* modifications to the file while reading it. That's still better than not
* opening it at all, though.
*/ \
if (verbose) \
printf("mmap(%s, MAP_PRIVATE) failed, retrying with MAP_SHARED\n", path); \
(ptr) = mmap(NULL, (size), PROT_READ, MAP_SHARED, (fd), 0); \
} \
} while (0)
#endif /* !( defined(_MSC_VER) || defined(__MINGW32__) ) */
struct LexerState *lexer_OpenFile(char const *path)
{
dbgPrint("Opening file \"%s\"\n", path);