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This change progresses our AARCH64 support:

- The AARCH64 build and tests are now passing
- Add 128-bit floating-point support to printf()
- Fix clone() so it initializes cosmo's x28 TLS register
- Fix TLS memory layout issue with aarch64 _Alignas vars
- Revamp microbenchmarking tools so they work on aarch64
- Make some subtle improvements to aarch64 crash reporting
- Make kisdangerous() memory checks more accurate on aarch64
- Remove sys_open() since it's not available on Linux AARCH64

This change makes general improvements to Cosmo and Redbean:

- Introduce GetHostIsa() function in Redbean
- You can now feature check using pledge(0, 0)
- You can now feature check using unveil("",0)
- Refactor some more x86-specific asm comments
- Refactor and write docs for some libm functions
- Make the mmap() API behave more similar to Linux
- Fix WIFSIGNALED() which wrongly returned true for zero
- Rename some obscure cosmo keywords from noFOO to dontFOO
This commit is contained in:
Justine Tunney 2023-06-03 08:12:13 -07:00
parent 5655c9a4e7
commit 8f522cb702
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GPG key ID: BE714B4575D6E328
116 changed files with 1194 additions and 1025 deletions
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59
libc/intrin/cp.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/blockcancel.internal.h"
#include "libc/calls/cp.internal.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/thread/posixthread.internal.h"
#include "libc/thread/tls.h"
#ifdef MODE_DBG
int begin_cancellation_point(void) {
int state = 0;
struct CosmoTib *tib;
struct PosixThread *pt;
if (__enable_tls) {
tib = __get_tls();
if ((pt = (struct PosixThread *)tib->tib_pthread)) {
state = pt->flags & PT_INCANCEL;
pt->flags |= PT_INCANCEL;
}
}
return state;
}
void end_cancellation_point(int state) {
struct CosmoTib *tib;
struct PosixThread *pt;
if (__enable_tls) {
tib = __get_tls();
if ((pt = (struct PosixThread *)tib->tib_pthread)) {
pt->flags &= ~PT_INCANCEL;
pt->flags |= state;
}
}
}
void report_cancellation_point(void) {
BLOCK_CANCELLATIONS;
_bt("error: need BEGIN/END_CANCELLATION_POINT\n");
ALLOW_CANCELLATIONS;
}
#endif /* MODE_DBG */