mirror of
https://github.com/jart/cosmopolitan.git
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ae638c0850
- Get clone() working on FreeBSD - Increase some Python build quotas - Add more atomic builtins to chibicc - Fix ASAN poisoning of alloca() memory - Make MODE= mandatory link path tinier - Improve the examples folder a little bit - Start working on some more resource limits - Make the linenoise auto-complete UI as good as GNU readline - Update compile.com, avoiding AVX codegen on non-AVX systems - Make sure empty path to syscalls like opendir raises ENOENT - Correctly polyfill ENOENT vs. ENOTDIR on the New Technology - Port bestline's paredit features to //third_party/linenoise - Remove workarounds for RHEL 5.0 bugs that were fixed in 5.1
89 lines
3.6 KiB
C
89 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/dce.h"
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#include "libc/intrin/tls.h"
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#include "libc/nt/thunk/msabi.h"
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__msabi extern typeof(TlsFree) *const __imp_TlsFree;
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__msabi extern typeof(TlsAlloc) *const __imp_TlsAlloc;
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__msabi extern typeof(TlsGetValue) *const __imp_TlsGetValue;
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__msabi extern typeof(TlsSetValue) *const __imp_TlsSetValue;
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/**
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* Assigns thread-local storage slot.
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*
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* This function may for instance be called at startup and the result
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* can be assigned to a global static variable; from then on, all the
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* threads in your application may pass that value to TlsGetValue, to
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* retrieve their thread-local values.
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*
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* @return index on success, or -1u w/ errno
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* @threadsafe
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*/
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uint32_t TlsAlloc(void) {
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return __imp_TlsAlloc();
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}
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/**
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* Releases thread-local storage slot.
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* @threadsafe
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*/
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bool32 TlsFree(uint32_t dwTlsIndex) {
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return __imp_TlsFree(dwTlsIndex);
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}
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/**
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* Sets value to thread-local storage slot.
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*
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* @param dwTlsIndex is something returned by TlsAlloc()
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* @return true if successful, otherwise false
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* @threadsafe
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*/
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bool32 TlsSetValue(uint32_t dwTlsIndex, void *lpTlsValue) {
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assert(IsWindows());
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if (dwTlsIndex < 64) {
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asm("mov\t%1,%%gs:%0"
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: "=m"(*((long *)0x1480 + dwTlsIndex))
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: "r"(lpTlsValue));
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return true;
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} else {
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return __imp_TlsSetValue(dwTlsIndex, lpTlsValue);
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}
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}
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/**
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* Retrieves value from thread-local storage slot.
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*
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* @param dwTlsIndex is something returned by TlsAlloc()
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* @return true if successful, otherwise false
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* @threadsafe
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*/
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void *TlsGetValue(uint32_t dwTlsIndex) {
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void *lpTlsValue;
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assert(IsWindows());
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if (dwTlsIndex < 64) {
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asm("mov\t%%gs:%1,%0"
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: "=r"(lpTlsValue)
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: "m"(*((long *)0x1480 + dwTlsIndex)));
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return lpTlsValue;
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} else {
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return __imp_TlsGetValue(dwTlsIndex);
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}
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}
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