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Port a lot more code to AARCH64

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- Introduce epoll_pwait()
- Rewrite -ftrapv and ffs() libraries in C code
- Use more FreeBSD code in math function library
- Get significantly more tests passing on qemu-aarch64
- Fix many Musl long double functions that were broken on AARCH64
This commit is contained in:
Justine Tunney 2023-05-14 09:32:15 -07:00
parent 91791e9f38
commit 550b52abf6
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GPG key ID: BE714B4575D6E328
158 changed files with 6018 additions and 3499 deletions
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49
libc/sock/epoll.c
View file

@ -36,7 +36,9 @@
#include "libc/assert.h"
#include "libc/calls/cp.internal.h"
#include "libc/calls/internal.h"
#include "libc/calls/sig.internal.h"
#include "libc/calls/state.internal.h"
#include "libc/calls/struct/sigset.internal.h"
#include "libc/calls/syscall_support-sysv.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
@ -71,10 +73,9 @@
#include "libc/sock/internal.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/epoll.h"
#include "libc/sysv/consts/sig.h"
#include "libc/sysv/errfuns.h"
#ifdef __x86_64__
/**
* @fileoverview epoll
*
@ -1520,10 +1521,15 @@ int epoll_ctl(int epfd, int op, int fd, struct epoll_event *ev) {
*/
int epoll_wait(int epfd, struct epoll_event *events, int maxevents,
int timeoutms) {
int rc;
int e, rc;
BEGIN_CANCELLATION_POINT;
if (!IsWindows()) {
e = errno;
rc = sys_epoll_wait(epfd, events, maxevents, timeoutms);
if (rc == -1 && errno == ENOSYS) {
errno = e;
rc = sys_epoll_pwait(epfd, events, maxevents, timeoutms, 0, 0);
}
} else {
rc = sys_epoll_wait_nt(epfd, events, maxevents, timeoutms);
}
@ -1533,4 +1539,39 @@ int epoll_wait(int epfd, struct epoll_event *events, int maxevents,
return rc;
}
#endif /* __x86_64__ */
/**
* Receives socket events.
*
* @param events will receive information about what happened
* @param maxevents is array length of events
* @param timeoutms is milliseconds, 0 to not block, or -1 for forever
* @param sigmask is an optional sigprocmask() to use during call
* @return number of events stored, 0 on timeout, or -1 w/ errno
* @cancellationpoint
* @norestart
*/
int epoll_pwait(int epfd, struct epoll_event *events, int maxevents,
int timeoutms, const sigset_t *sigmask) {
int e, rc;
sigset_t oldmask;
BEGIN_CANCELLATION_POINT;
if (!IsWindows()) {
e = errno;
rc = sys_epoll_pwait(epfd, events, maxevents, timeoutms, sigmask,
sizeof(*sigmask));
if (rc == -1 && errno == ENOSYS) {
errno = e;
if (sigmask) sys_sigprocmask(SIG_SETMASK, sigmask, &oldmask);
rc = sys_epoll_wait(epfd, events, maxevents, timeoutms);
if (sigmask) sys_sigprocmask(SIG_SETMASK, &oldmask, 0);
}
} else {
if (sigmask) __sig_mask(SIG_SETMASK, sigmask, &oldmask);
rc = sys_epoll_wait_nt(epfd, events, maxevents, timeoutms);
if (sigmask) __sig_mask(SIG_SETMASK, &oldmask, 0);
}
END_CANCELLATION_POINT;
STRACE("epoll_pwait(%d, %p, %d, %d) → %d% m", epfd, events, maxevents,
timeoutms, DescribeSigset(0, sigmask), rc);
return rc;
}