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Cull the examples folder

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This commit is contained in:
Justine Tunney 2023-10-11 21:38:27 -07:00
parent 3a1f887928
commit f7343319cc
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GPG key ID: BE714B4575D6E328
44 changed files with 47 additions and 1963 deletions
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17
libc/calls/sigaltstack.c
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@ -56,6 +56,15 @@ static void sigaltstack2linux(struct sigaltstack *linux,
linux->ss_size = size;
}
static void sigaltstack_setnew(const struct sigaltstack *neu) {
if (neu) {
struct CosmoTib *tib = __get_tls();
tib->tib_sigstack_addr = (char *)ROUNDUP((uintptr_t)neu->ss_sp, 16);
tib->tib_sigstack_size = ROUNDDOWN(neu->ss_size, 16);
tib->tib_sigstack_flags = neu->ss_flags & SS_DISABLE;
}
}
static textwindows int sigaltstack_cosmo(const struct sigaltstack *neu,
struct sigaltstack *old) {
struct CosmoTib *tib = __get_tls();
@ -65,11 +74,7 @@ static textwindows int sigaltstack_cosmo(const struct sigaltstack *neu,
old->ss_size = tib->tib_sigstack_size;
old->ss_flags = tib->tib_sigstack_flags & ~SS_ONSTACK;
}
if (neu) {
tib->tib_sigstack_addr = (char *)ROUNDUP((uintptr_t)neu->ss_sp, 16);
tib->tib_sigstack_size = ROUNDDOWN(neu->ss_size, 16);
tib->tib_sigstack_flags = neu->ss_flags & SS_DISABLE;
}
sigaltstack_setnew(neu);
if (tib->tib_sigstack_addr <= bp &&
bp <= tib->tib_sigstack_addr + tib->tib_sigstack_size) {
if (old) old->ss_flags |= SS_ONSTACK;
@ -130,8 +135,10 @@ int sigaltstack(const struct sigaltstack *neu, struct sigaltstack *old) {
rc = enomem();
} else if (IsLinux()) {
rc = sys_sigaltstack(neu, old);
if (!rc) sigaltstack_setnew(neu);
} else if (IsBsd()) {
rc = sigaltstack_bsd(neu, old);
if (!rc) sigaltstack_setnew(neu);
} else {
rc = sigaltstack_cosmo(neu, old);
}