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Reduce code size of mandatory runtime

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This change reduces o/tiny/examples/life from 44kb to 24kb in size since
it avoids linking mmap() when unnecessary. This is important, to helping
cosmo not completely lose touch with its roots.
This commit is contained in:
Justine Tunney 2024-07-04 02:50:20 -07:00
parent fdab49b30e
commit 15ea0524b3
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GPG key ID: BE714B4575D6E328
17 changed files with 164 additions and 163 deletions
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7
libc/calls/sig.c
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@ -81,14 +81,11 @@ textwindows void __sig_delete(int sig) {
struct Dll *e;
atomic_fetch_and_explicit(&__sig.pending, ~(1ull << (sig - 1)),
memory_order_relaxed);
BLOCK_SIGNALS;
_pthread_lock();
for (e = dll_last(_pthread_list); e; e = dll_prev(_pthread_list, e)) {
for (e = dll_last(_pthread_list); e; e = dll_prev(_pthread_list, e))
atomic_fetch_and_explicit(&POSIXTHREAD_CONTAINER(e)->tib->tib_sigpending,
~(1ull << (sig - 1)), memory_order_relaxed);
}
_pthread_unlock();
ALLOW_SIGNALS;
}
static textwindows int __sig_getter(atomic_ulong *sigs, sigset_t masked) {
@ -559,7 +556,7 @@ void __stack_call(struct NtExceptionPointers *, int, int, struct CosmoTib *,
__msabi dontinstrument unsigned __sig_crash(struct NtExceptionPointers *ep) {
// translate win32 to unix si_signo and si_code
int code, sig = __sig_crash_sig(ep, &code);
int code, sig = __sig_crash_sig(ep->ExceptionRecord->ExceptionCode, &code);
// advance the instruction pointer to skip over debugger breakpoints
// this behavior is consistent with how unix kernels are implemented