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https://github.com/jart/cosmopolitan.git
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a15958edc6
Function trace logs will report stack usage accurately. It won't include the argv/environ block. Our clone() polyfill is now simpler and does not use as much stack memory. Function call tracing on x86 is now faster too
38 lines
2.4 KiB
C
38 lines
2.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/calls/struct/sigset.h"
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#include "libc/calls/struct/sigset.internal.h"
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#include "libc/dce.h"
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#include "libc/str/str.h"
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int sys_sigprocmask(int how, const sigset_t *opt_set,
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sigset_t *opt_out_oldset) {
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int rc;
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uint64_t old[2] = {0};
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if (!IsOpenbsd()) {
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rc = __sys_sigprocmask(how, opt_set ? (uint64_t[2]){*opt_set} : 0, old, 8);
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} else {
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old[0] = (uint32_t)(uintptr_t)__sys_sigprocmask(
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how, opt_set ? (sigset_t *)(intptr_t)(uint32_t)*opt_set : 0, 0, 0);
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rc = 0;
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}
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if (rc != -1 && opt_out_oldset)
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*opt_out_oldset = old[0];
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return rc;
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}
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