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Make improvements

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- Introduce portable sched_getcpu() api
- Support GCC's __target_clones__ feature
- Make fma() go faster on x86 in default mode
- Remove some asan checks from core libraries
- WinMain() now ensures $HOME and $USER are defined
This commit is contained in:
Justine Tunney 2024-02-01 03:39:46 -08:00
parent d5225a693b
commit 2ab9e9f7fd
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GPG key ID: BE714B4575D6E328
192 changed files with 2809 additions and 932 deletions
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8
libc/runtime/set_tls.c
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@ -29,7 +29,7 @@
#define AMD64_SET_FSBASE 129
#define AMD64_SET_GSBASE 131
int sys_set_tls();
int sys_set_tls(uintptr_t, void *);
// we can't allow --ftrace here because cosmo_dlopen() calls this
// function to fix the tls register, and ftrace needs it unbroken
@ -47,12 +47,12 @@ dontinstrument textstartup void __set_tls(struct CosmoTib *tib) {
// netbsd has sysarch(X86_SET_FSBASE) but we can't use that because
// signal handlers will cause it to be reset due to not setting the
// _mc_tlsbase field in struct mcontext_netbsd.
sys_set_tls(tib);
sys_set_tls((uintptr_t)tib, 0);
} else if (IsOpenbsd()) {
sys_set_tls(tib);
sys_set_tls((uintptr_t)tib, 0);
} else if (IsXnu()) {
// thread_fast_set_cthread_self has a weird ABI
sys_set_tls((intptr_t)tib - 0x30);
sys_set_tls((intptr_t)tib - 0x30, 0);
} else {
uint64_t val = (uint64_t)tib;
asm volatile("wrmsr"