mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
8b72490431
Calls to lock/unlock functions are now NOPs by default. The first time clone() is called, they get turned into CALL instructions. Doing this caused funcctions like fputc() to shrink from 85 bytes to 45+4 bytes. Since the ANSI solution of `(__threaded && lock())` inlines os much superfluous binary content into functions all over the place.
37 lines
1 KiB
C
37 lines
1 KiB
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_CXAATEXIT_H_
|
|
#define COSMOPOLITAN_LIBC_RUNTIME_CXAATEXIT_H_
|
|
#include "libc/intrin/nopl.h"
|
|
#include "libc/nexgen32e/threaded.h"
|
|
#include "libc/stdio/stdio.h"
|
|
#if !(__ASSEMBLER__ + __LINKER__ + 0)
|
|
COSMOPOLITAN_C_START_
|
|
|
|
struct CxaAtexitBlocks {
|
|
struct CxaAtexitBlock {
|
|
unsigned mask;
|
|
struct CxaAtexitBlock *next;
|
|
struct CxaAtexit {
|
|
void *fp;
|
|
void *arg;
|
|
void *pred;
|
|
} p[ATEXIT_MAX];
|
|
} * p, root;
|
|
};
|
|
|
|
extern struct CxaAtexitBlocks __cxa_blocks;
|
|
|
|
void __cxa_lock(void);
|
|
void __cxa_unlock(void);
|
|
void __cxa_printexits(FILE *, void *);
|
|
|
|
#if defined(__GNUC__) && !defined(__llvm__) && !defined(__STRICT_ANSI__)
|
|
#define __cxa_lock() _NOPL0("__threadcalls", __cxa_lock)
|
|
#define __cxa_unlock() _NOPL0("__threadcalls", __cxa_unlock)
|
|
#else
|
|
#define __cxa_lock() (__threaded ? __cxa_lock() : 0)
|
|
#define __cxa_unlock() (__threaded ? __cxa_unlock() : 0)
|
|
#endif
|
|
|
|
COSMOPOLITAN_C_END_
|
|
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
|
|
#endif /* COSMOPOLITAN_LIBC_RUNTIME_CXAATEXIT_H_ */
|