mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-01 16:58:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Make considerably more progress on AARCH64

Browse source 
- Utilities like pledge.com now build
- kprintf() will no longer balk at 48-bit addresses
- There's a new aarch64-dbg build mode that should work
- gc() and defer() are mostly pacified; avoid using them on aarch64
- THIRD_PART_STB now has Arm Neon intrinsics for fast image handling
This commit is contained in:
Justine Tunney 2023-05-12 22:42:57 -07:00
parent 1bfb3aab1b
commit fd34ef732d
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
91 changed files with 1288 additions and 1192 deletions
Download patch file Download diff file Expand all files Collapse all files

32
libc/calls/prctl.c
View file

@ -42,8 +42,8 @@ privileged int prctl(int operation, ...) {
d = va_arg(va, intptr_t);
va_end(va);
#ifdef __x86_64__
if (IsLinux()) {
#ifdef __x86_64__
asm volatile("mov\t%5,%%r10\n\t"
"mov\t%6,%%r8\n\t"
"syscall"
@ -51,25 +51,25 @@ privileged int prctl(int operation, ...) {
: "0"(157), "D"(operation), "S"(a), "d"(b), "g"(c), "g"(d)
: "rcx", "r8", "r10", "r11", "memory");
if (rc > -4096u) errno = -rc, rc = -1;
} else {
rc = enosys();
}
#elif defined(__aarch64__)
register long r0 asm("x0") = (long)operation;
register long r1 asm("x1") = (long)a;
register long r2 asm("x2") = (long)b;
register long r3 asm("x3") = (long)c;
register long r4 asm("x4") = (long)d;
register long res_x0 asm("x0");
asm volatile("mov\tx8,%1\n\t"
"svc\t0"
: "=r"(res_x0)
: "i"(167), "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4)
: "x8", "memory");
rc = _sysret(res_x0);
register long r0 asm("x0") = (long)operation;
register long r1 asm("x1") = (long)a;
register long r2 asm("x2") = (long)b;
register long r3 asm("x3") = (long)c;
register long r4 asm("x4") = (long)d;
register long res_x0 asm("x0");
asm volatile("mov\tx8,%1\n\t"
"svc\t0"
: "=r"(res_x0)
: "i"(167), "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4)
: "x8", "memory");
rc = _sysret(res_x0);
#else
#error "arch unsupported"
#endif
} else {
rc = enosys();
}
#ifdef SYSDEBUG
if (operation == PR_CAPBSET_READ || operation == PR_CAPBSET_DROP) {