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Fold LIBC_BITS into LIBC_INTRIN

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Justine Tunney 2022-08-11 12:13:18 -07:00
parent 625aa365f1
commit 05b8f82371
603 changed files with 1071 additions and 1211 deletions
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28
libc/intrin/weaken.h Normal file
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#ifndef COSMOPOLITAN_LIBC_BITS_WEAKEN_H_
#define COSMOPOLITAN_LIBC_BITS_WEAKEN_H_
#include "libc/intrin/ezlea.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
#ifndef __STRICT_ANSI__
#define weaken(symbol) ((const typeof(&(symbol)))weakaddr(#symbol))
#define strongaddr(symbolstr) \
({ \
intptr_t waddr; \
asm(ezlea(symbolstr) "0" : "=r"(waddr)); \
waddr; \
})
#define weakaddr(symbolstr) \
({ \
intptr_t waddr; \
asm(".weak\t" symbolstr "\n\t" ezlea(symbolstr) "0" : "=r"(waddr)); \
waddr; \
})
#else
#define weaken(symbol) symbol
#define weakaddr(symbolstr) &(symbolstr)
#endif /* __STRICT_ANSI__ */
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_BITS_WEAKEN_H_ */