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Make Cosmopolitan ANSI C89 compatible

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You can now use cosmopolitan.h with an ANSI C89 compiler like MSVC. The
Cosmopolitan codebase itself won't support being compiled that way. But
you can build objects that link against Cosmopolitan using any compiler
and you can furthermore use tools like IntelliSense that can't even GNU

See also #40
This commit is contained in:
Justine Tunney
2021-02-03 17:48:59 -08:00
parent 46085797b6
commit a8d7195777
34 changed files with 262 additions and 9561 deletions
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1
libc/fmt/fmt.h
View File

@ -26,7 +26,6 @@ int sscanf(const char *, const char *, ...) scanfesque(2);
int vsscanf(const char *, const char *, va_list);
int vcscanf(int (*)(void *), int (*)(int, void *), void *, const char *,
va_list);
char *strerror(int) returnsnonnull nothrow nocallback;
int strerror_r(int, char *, size_t) nothrow nocallback;
int palandprintf(void *, void *, const char *, va_list) hidden;
char *itoa(int, char *, int) compatfn;

2
libc/fmt/leb128.h
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@ -3,8 +3,10 @@
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#ifndef __STRICT_ANSI__
int sleb128(const void *, size_t, int128_t);
int unsleb128(const void *, size_t, int128_t *);
#endif /* ANSI */
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */

49
libc/fmt/pflink.h
View File

@ -61,23 +61,44 @@
*/
#pragma GCC diagnostic ignored "-Wformat-security"
#endif /* __GNUC__ + 0 < 6 */
#else
#define PFLINK(FMT) FMT
#define SFLINK(FMT) FMT
asm(".section .yoink\n\t"
"nop\tntoa(%rip)\n\t"
"nop\tftoa(%rip)\n\t"
"nop\tkCp437(%rip)\n\t"
"nop\tstrerror(%rip)\n\t"
"nop\tstrnwidth(%rip)\n\t"
"nop\tstrnwidth16(%rip)\n\t"
"nop\twcsnwidth(%rip)\n\t"
"nop\tmalloc(%rip)\n\t"
"nop\tcalloc(%rip)\n\t"
"nop\tfree_s(%rip)\n\t"
"nop\t__grow(%rip)\n\t"
".previous");
#ifdef __GNUC__
__asm__(".section .yoink\n\t"
"nop\tntoa(%rip)\n\t"
"nop\tftoa(%rip)\n\t"
"nop\tkCp437(%rip)\n\t"
"nop\tstrerror(%rip)\n\t"
"nop\tstrnwidth(%rip)\n\t"
"nop\tstrnwidth16(%rip)\n\t"
"nop\twcsnwidth(%rip)\n\t"
"nop\tmalloc(%rip)\n\t"
"nop\tcalloc(%rip)\n\t"
"nop\tfree_s(%rip)\n\t"
"nop\t__grow(%rip)\n\t"
".previous");
#else
#include "libc/fmt/palandprintf.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/unicode/unicode.h"
static long __pflink(long x) {
x |= kCp437[0];
x |= ntoa(0, 0, 0, 0, 0, 0, 0, 0, 0);
x |= ftoa(0, 0, 0, 0, 0, 0);
x |= strnwidth(0, 0);
x |= strnwidth16(0, 0);
x |= wcsnwidth(0, 0);
x |= malloc(0);
x |= __grow(0, 0, 0, 0);
x |= (intptr_t)strerror(0);
x |= (intptr_t)calloc(0, 0);
free_s(0);
return x;
}
#endif
#endif /* __STRICT_ANSI__ */
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_FMT_PFLINK_H_ */