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Make more code aarch64 friendly

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Justine Tunney 2023-05-02 13:38:16 -07:00
parent ca2860947f
commit 2b73e72d59
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GPG key ID: BE714B4575D6E328
568 changed files with 2197 additions and 1061 deletions
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18
libc/calls/prctl.c
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@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/describeflags.internal.h"
@ -41,6 +42,7 @@ privileged int prctl(int operation, ...) {
d = va_arg(va, intptr_t);
va_end(va);
#ifdef __x86_64__
if (IsLinux()) {
asm volatile("mov\t%5,%%r10\n\t"
"mov\t%6,%%r8\n\t"
@ -52,6 +54,22 @@ privileged int prctl(int operation, ...) {
} 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"
"svc\t0"
: "=r"(res_x0)
: "i"(167), "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4)
: "x8", "memory");
rc = _sysret32(res_x0);
#else
#error "arch unsupported"
#endif
#ifdef SYSDEBUG
if (operation == PR_CAPBSET_READ || operation == PR_CAPBSET_DROP) {