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Improve aarch64 native support some more

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This change introduces partial support for automating remote testing of
aarch64 binaries on Raspberry Pi and Apple Silicon.
This commit is contained in:
Justine Tunney 2023-06-04 08:19:45 -07:00
parent fc34ba2596
commit 4aa1d09b9e
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GPG key ID: BE714B4575D6E328
20 changed files with 185 additions and 82 deletions
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10
libc/runtime/clone.c
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@ -313,7 +313,7 @@ static errno_t CloneOpenbsd(int (*func)(void *, int), char *stk, size_t stksz,
sp &= -alignof(struct __tfork);
tf = (struct __tfork *)sp;
sp -= sizeof(struct CloneArgs);
sp &= -MAX(16, alignof(struct CloneArgs));
sp &= -alignof(struct CloneArgs);
wt = (struct CloneArgs *)sp;
wt->ctid = flags & CLONE_CHILD_SETTID ? ctid : &wt->tid;
wt->ztid = flags & CLONE_CHILD_CLEARTID ? ctid : &wt->tid;
@ -442,10 +442,10 @@ static int CloneNetbsd(int (*func)(void *, int), char *stk, size_t stksz,
static void *SiliconThreadMain(void *arg) {
register struct CloneArgs *wt asm("x21") = arg;
asm volatile("ldr\tx28,%0" : /* no outputs */ : "m"(wt->tls));
*wt->ctid = wt->this;
register long x0 asm("x0") = (long)wt->arg;
register long x1 asm("x1") = (long)wt->tid;
register void *x0 asm("x0") = wt->arg;
register int x1 asm("w1") = wt->this;
register void *x28 asm("x28") = wt->tls;
asm volatile("mov\tx19,x29\n\t" // save frame pointer
"mov\tx20,sp\n\t" // save stack pointer
"mov\tx29,#0\n\t" // reset backtrace
@ -454,7 +454,7 @@ static void *SiliconThreadMain(void *arg) {
"mov\tx29,x19\n\t" // restore frame pointer
"mov\tsp,x20" // restore stack pointer
: "+r"(x0)
: "r"(x1), "r"(wt->func), "r"(wt)
: "r"(x1), "r"(wt->func), "r"(wt), "r"(x28)
: "x19", "x20", "memory");
*wt->ztid = 0;
return 0;