2022-05-17 14:40:00 +00:00
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#ifndef COSMOPOLITAN_LIBC_NEXGEN32E_THREADED_H_
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#define COSMOPOLITAN_LIBC_NEXGEN32E_THREADED_H_
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#include "libc/dce.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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extern bool __threaded;
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extern bool __tls_enabled;
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extern unsigned __tls_index;
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void *__initialize_tls(char[hasatleast 64]);
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void __install_tls(char[hasatleast 64]);
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2022-05-17 14:42:43 +00:00
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#if defined(__GNUC__) && defined(__x86_64__) && !defined(__STRICT_ANSI__)
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2022-05-17 14:40:00 +00:00
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/**
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* Returns address of thread information block.
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*
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* This function must not be called until TLS is initialized.
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*
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* @see __install_tls()
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* @see clone()
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*/
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static noasan inline char *__get_tls(void) {
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char *tib, *lin = (char *)0x30;
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if (IsLinux() || IsFreebsd() || IsNetbsd() || IsOpenbsd()) {
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asm("mov\t%%fs:(%1),%0" : "=a"(tib) : "r"(lin));
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} else {
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asm("mov\t%%gs:(%1),%0" : "=a"(tib) : "r"(lin));
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if (IsWindows()) {
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tib = *(char **)(tib + 0x1480 + __tls_index * 8);
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}
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}
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return tib;
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}
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#endif /* GNU x86-64 */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_NEXGEN32E_THREADED_H_ */
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