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Introduce native support for MacOS ARM64

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There's a new program named ape/ape-m1.c which will be used to build an
embeddable binary that can load ape and elf executables. The support is
mostly working so far, but still chasing down ABI issues.
This commit is contained in:
Justine Tunney 2023-05-18 19:05:08 -07:00
parent b852650c08
commit 1422e96b4e
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GPG key ID: BE714B4575D6E328
757 changed files with 2988 additions and 1321 deletions
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20
libc/calls/umask.c
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@ -17,9 +17,27 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/intrin/strace.internal.h"
#include "libc/sysv/consts/nr.h"
static inline unsigned sys_umask(unsigned newmask) {
#ifdef __x86_64__
unsigned res;
asm volatile("syscall"
: "=a"(res)
: "0"(__NR_umask), "D"(newmask)
: "memory", "cc");
#elif defined(__aarch64__)
// xnu m1 doesn't manage carry flag
register long r0 asm("x0") = newmask;
register long r8 asm("x8") = __NR_umask & 0x7ff;
register long r16 asm("x16") = __NR_umask & 0x7ff;
register unsigned res asm("x0");
asm volatile("svc\t0" : "=r"(res) : "r"(r0), "r"(r8), "r"(r16) : "memory");
#endif
return res;
}
/**
* Sets file mode creation mask.