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Improve dlopen() on Apple Silicon

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- Introduce MAP_JIT which is zero on other platforms
- Invent __jit_begin() and __jit_end() which wrap Apple's APIs
- Runtime dispatch to sys_icache_invalidate() in __clear_cache()
This commit is contained in:
Justine Tunney 2023-11-17 02:33:14 -08:00
parent 7a9e176ecf
commit 529cb4817c
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GPG key ID: BE714B4575D6E328
20 changed files with 120 additions and 117 deletions
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2
libc/sysv/syscalls.sh
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@ -45,7 +45,7 @@ scall sys_ppoll 0xfff86da21ffff90f 0x849 globl hidden # consider INTON/INTOFF t
scall sys_lseek 0x0c70a61de20c7008 0x03e globl hidden # netbsd:evilpad, OpenBSD 7.3+
scall __sys_mmap 0x0c50311dd20c5009 0x0de globl hidden # netbsd:pad, OpenBSD 7.3+
scall sys_msync 0x915900841284181a 0x8e3 globl hidden
scall sys_mprotect 0x04a04a04a204a00a 0x0e2 globl hidden
scall __sys_mprotect 0x04a04a04a204a00a 0x0e2 globl hidden
scall __sys_munmap 0x049049049204900b 0x0d7 globl hidden
scall sys_sigaction 0x15402e1a0202e00d 0x086 globl hidden # rt_sigaction on Lunix; __sigaction_sigtramp() on NetBSD
scall __sys_sigprocmask 0x125030154214900e 0x087 globl hidden # a.k.a. rt_sigprocmask, openbsd:byvalue, a.k.a. pthread_sigmask