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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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46
libc/runtime/fork-sysv.c
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@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/runtime/syslib.internal.h"
#include "libc/sysv/consts/sig.h"
#include "libc/sysv/errfuns.h"
@ -38,27 +39,32 @@ int sys_fork(void) {
#elif defined(__aarch64__)
if (IsLinux()) {
int flags = 17; // SIGCHLD;
void *child_stack = 0;
void *parent_tidptr = 0;
void *newtls = 0;
void *child_tidptr = 0;
register long r0 asm("x0") = (long)flags;
register long r1 asm("x1") = (long)child_stack;
register long r2 asm("x2") = (long)parent_tidptr;
register long r3 asm("x3") = (long)newtls;
register long r4 asm("x4") = (long)child_tidptr;
register long res_x0 asm("x0");
asm volatile("mov\tx8,%1\n\t"
"svc\t0"
: "=r"(res_x0)
: "i"(220), "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4)
: "x8", "memory");
return _sysret(res_x0);
} else {
return enosys();
int flags = 17; // SIGCHLD
void *child_stack = 0;
void *parent_tidptr = 0;
void *newtls = 0;
void *child_tidptr = 0;
register long r0 asm("x0") = (long)flags;
register long r1 asm("x1") = (long)child_stack;
register long r2 asm("x2") = (long)parent_tidptr;
register long r3 asm("x3") = (long)newtls;
register long r4 asm("x4") = (long)child_tidptr;
register int res_x0 asm("x0");
register int res_x1 asm("x1");
asm volatile("mov\tx8,%2\n\t"
"mov\tx16,%3\n\t"
"svc\t0"
: "=r"(res_x0), "=r"(res_x1)
: "i"(220), "i"(2), "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4)
: "x8", "x16", "memory");
if (IsXnu() && res_x0 != -1) {
res_x0 &= res_x1 - 1;
}
return _sysret(res_x0);
#else
return enosys();
#endif
}