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Improve signal handling and math

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- Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD
- Add tests confirming signals can edit CPU state
- Work towards supporting ZIP filesystem on bare metal
- Add more tinymath unit tests for POSIX conformance
- Add X87 and SSE status flags to crash report
- Fix some bugs in blinkenlights
- Fix llvm build breakage
This commit is contained in:
Justine Tunney 2021-02-25 18:30:17 -08:00
parent cdc54ea1fd
commit 40291c9db3
109 changed files with 2316 additions and 520 deletions
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38
libc/calls/sigaction.c
View file

@ -39,16 +39,6 @@
#include "libc/sysv/consts/sig.h"
#include "libc/sysv/errfuns.h"
union metasigaction {
struct sigaction cosmo;
struct sigaction_linux linux;
struct sigaction_freebsd freebsd;
struct sigaction_openbsd openbsd;
struct sigaction_netbsd netbsd;
struct sigaction_xnu_in xnu_in;
struct sigaction_xnu_out xnu_out;
};
#ifndef SWITCHEROO
#define SWITCHEROO(S1, S2, A, B, C, D) \
do { \
@ -66,6 +56,20 @@ union metasigaction {
} while (0);
#endif
union metasigaction {
struct sigaction cosmo;
struct sigaction_linux linux;
struct sigaction_freebsd freebsd;
struct sigaction_openbsd openbsd;
struct sigaction_netbsd netbsd;
struct sigaction_xnu_in xnu_in;
struct sigaction_xnu_out xnu_out;
};
void __sigenter_netbsd(int, void *, void *);
void __sigenter_freebsd(int, void *, void *);
void __sigenter_openbsd(int, void *, void *);
static void sigaction_cosmo2native(union metasigaction *sa) {
if (!sa) return;
switch (__hostos) {
@ -165,17 +169,21 @@ int(sigaction)(int sig, const struct sigaction *act, struct sigaction *oldact) {
memcpy(&copy, act, sizeof(copy));
ap = ©
if (IsXnu()) {
ap->sa_restorer = (void *)&__xnutrampoline;
ap->sa_handler = (void *)&__xnutrampoline;
ap->sa_restorer = (void *)&__sigenter_xnu;
ap->sa_handler = (void *)&__sigenter_xnu;
} else if (IsLinux()) {
if (!(ap->sa_flags & SA_RESTORER)) {
ap->sa_flags |= SA_RESTORER;
ap->sa_restorer = &__restore_rt;
}
} else if (IsNetbsd()) {
ap->sa_sigaction = act->sa_sigaction;
} else if (rva >= kSigactionMinRva) {
ap->sa_sigaction = (sigaction_f)__sigenter;
ap->sa_sigaction = (sigaction_f)__sigenter_netbsd;
} else if (IsFreebsd()) {
ap->sa_sigaction = (sigaction_f)__sigenter_freebsd;
} else if (IsOpenbsd()) {
ap->sa_sigaction = (sigaction_f)__sigenter_openbsd;
} else {
return enosys();
}
sigaction_cosmo2native((union metasigaction *)ap);
} else {