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Fix typos in APE specification

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Fixes #1244
This commit is contained in:
Justine Tunney 2024-07-22 01:41:44 -07:00
parent 16d244614e
commit 62a97c919f
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GPG key ID: BE714B4575D6E328
2 changed files with 27 additions and 37 deletions
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33
libc/calls/sig.c
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@ -96,9 +96,8 @@ static textwindows int __sig_getter(atomic_ulong *sigs, sigset_t masked) {
if ((deliverable = pending & ~masked)) {
sig = bsfl(deliverable) + 1;
bit = 1ull << (sig - 1);
if (atomic_fetch_and_explicit(sigs, ~bit, memory_order_acq_rel) & bit) {
if (atomic_fetch_and_explicit(sigs, ~bit, memory_order_acq_rel) & bit)
return sig;
}
} else {
return 0;
}
@ -107,28 +106,23 @@ static textwindows int __sig_getter(atomic_ulong *sigs, sigset_t masked) {
textwindows int __sig_get(sigset_t masked) {
int sig;
if (!(sig = __sig_getter(&__get_tls()->tib_sigpending, masked))) {
if (!(sig = __sig_getter(&__get_tls()->tib_sigpending, masked)))
sig = __sig_getter(&__sig.pending, masked);
}
return sig;
}
static textwindows bool __sig_should_use_altstack(unsigned flags,
struct CosmoTib *tib) {
if (!(flags & SA_ONSTACK)) {
if (!(flags & SA_ONSTACK))
return false; // signal handler didn't enable it
}
if (!tib->tib_sigstack_size) {
if (!tib->tib_sigstack_size)
return false; // sigaltstack() wasn't installed on this thread
}
if (tib->tib_sigstack_flags & SS_DISABLE) {
if (tib->tib_sigstack_flags & SS_DISABLE)
return false; // sigaltstack() on this thread was disabled by user
}
char *bp = __builtin_frame_address(0);
if (tib->tib_sigstack_addr <= bp &&
bp <= tib->tib_sigstack_addr + tib->tib_sigstack_size) {
bp <= tib->tib_sigstack_addr + tib->tib_sigstack_size)
return false; // we're already on the alternate stack
}
return true;
}
@ -282,9 +276,8 @@ static textwindows wontreturn void __sig_tramp(struct SignalFrame *sf) {
// jump back into original code if there aren't any pending signals
do {
if (!(sig = __sig_get(sf->ctx.uc_sigmask))) {
if (!(sig = __sig_get(sf->ctx.uc_sigmask)))
__sig_restore(&sf->ctx);
}
} while (!__sig_start(pt, sig, &sf->rva, &sf->flags));
// tail recurse into another signal handler
@ -459,11 +452,9 @@ textwindows void __sig_generate(int sig, int sic) {
static textwindows char *__sig_stpcpy(char *d, const char *s) {
size_t i;
for (i = 0;; ++i) {
if (!(d[i] = s[i])) {
for (i = 0;; ++i)
if (!(d[i] = s[i]))
return d + i;
}
}
}
static textwindows wontreturn void __sig_death(int sig, const char *thing) {
@ -500,9 +491,8 @@ static textwindows void __sig_unmaskable(struct NtExceptionPointers *ep,
// if the user didn't install a signal handler for this unmaskable
// exception, then print a friendly helpful hint message to stderr
unsigned rva = __sighandrvas[sig];
if (rva == (intptr_t)SIG_DFL || rva == (intptr_t)SIG_IGN) {
if (rva == (intptr_t)SIG_DFL || rva == (intptr_t)SIG_IGN)
__sig_death(sig, "uncaught ");
}
// if this signal handler is configured to auto-reset to the default
// then that reset needs to happen before the user handler is called
@ -560,9 +550,8 @@ __msabi dontinstrument unsigned __sig_crash(struct NtExceptionPointers *ep) {
// this behavior is consistent with how unix kernels are implemented
if (sig == SIGTRAP) {
ep->ContextRecord->Rip++;
if (__sig_ignored(sig)) {
if (__sig_ignored(sig))
return kNtExceptionContinueExecution;
}
}
// win32 stack overflow detection executes INSIDE the guard page