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Introduce FreeBSD ARM64 support

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This commit is contained in:
Justine Tunney 2023-12-29 20:11:23 -08:00
parent 43fe5956ad
commit 83107f78ed
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GPG key ID: BE714B4575D6E328
455 changed files with 778 additions and 551 deletions
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17
libc/proc/vfork.S
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@ -87,9 +87,9 @@ vfork:
#elif defined(__aarch64__)
adrp x0,__hostos
ldr w0,[x0,#:lo12:__hostos]
tbz x0,3,1f // bit 3 is xnu
adrp x8,__hostos
ldr w8,[x8,#:lo12:__hostos]
tbz x8,3,1f // bit 3 is xnu
b fork // which doesn't support vfork()
1:
@ -102,10 +102,19 @@ vfork:
ldp x29,x30,[sp],16
#endif
mov x8,#220 // __NR_clone
tbnz w8,5,1f // bit 5 is freebsd
mov x8,#220 // clone (linux)
mov x0,#0x4111 // SIGCHLD | CLONE_VM | CLONE_VFORK
mov x1,#0
svc 0
b 2f
1: mov x8,#66 // vfork (freebsd)
svc 0 // call kernel
bcc 2f // jump if not carry
neg x0,x0 // linux style errno
2:
// if (!rc) {
// __get_tls()->tib_flags |= TIB_FLAG_VFORKED;