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Mint APE Loader v1.5

Browse source 
This change ports APE Loader to Linux AARCH64, so that Raspberry Pi
users can run programs like redbean, without the executable needing
to modify itself. Progress has also slipped into this change on the
issue of making progress better conforming to user expectations and
industry standards regarding which symbols we're allowed to declare
This commit is contained in:
Justine Tunney 2023-07-26 13:54:49 -07:00
parent 6843150e0c
commit 7e0a09feec
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
510 changed files with 1783 additions and 1483 deletions
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24
libc/thread/pthread_create.c
View file

@ -27,12 +27,14 @@
#include "libc/intrin/atomic.h"
#include "libc/intrin/bits.h"
#include "libc/intrin/dll.h"
#include "libc/intrin/kprintf.h"
#include "libc/log/internal.h"
#include "libc/macros.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/stack.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/auxv.h"
#include "libc/sysv/consts/clone.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/prot.h"
@ -44,9 +46,9 @@
#include "libc/thread/tls.h"
#include "libc/thread/wait0.internal.h"
STATIC_YOINK("nsync_mu_lock");
STATIC_YOINK("nsync_mu_unlock");
STATIC_YOINK("_pthread_atfork");
__static_yoink("nsync_mu_lock");
__static_yoink("nsync_mu_unlock");
__static_yoink("_pthread_atfork");
#define MAP_ANON_OPENBSD 0x1000
#define MAP_STACK_OPENBSD 0x4000
@ -57,7 +59,7 @@ void _pthread_free(struct PosixThread *pt) {
if ((pt->flags & PT_OWNSTACK) && //
pt->attr.__stackaddr && //
pt->attr.__stackaddr != MAP_FAILED) {
_npassert(!munmap(pt->attr.__stackaddr, pt->attr.__stacksize));
npassert(!munmap(pt->attr.__stackaddr, pt->attr.__stacksize));
}
if (pt->altstack) {
free(pt->altstack);
@ -70,7 +72,7 @@ static int PosixThread(void *arg, int tid) {
struct sigaltstack ss;
struct PosixThread *pt = arg;
enum PosixThreadStatus status;
_unassert(__get_tls()->tib_tid > 0);
unassert(__get_tls()->tib_tid > 0);
if (pt->altstack) {
ss.ss_flags = 0;
ss.ss_size = SIGSTKSZ;
@ -85,10 +87,10 @@ static int PosixThread(void *arg, int tid) {
// set long jump handler so pthread_exit can bring control back here
if (!setjmp(pt->exiter)) {
__get_tls()->tib_pthread = (pthread_t)pt;
_npassert(!sigprocmask(SIG_SETMASK, (sigset_t *)pt->attr.__sigmask, 0));
npassert(!sigprocmask(SIG_SETMASK, (sigset_t *)pt->attr.__sigmask, 0));
rc = pt->start(pt->arg);
// ensure pthread_cleanup_pop(), and pthread_exit() popped cleanup
_npassert(!pt->cleanup);
npassert(!pt->cleanup);
// calling pthread_exit() will either jump back here, or call exit
pthread_exit(rc);
}
@ -170,15 +172,17 @@ static errno_t pthread_create_impl(pthread_t *thread,
// cosmo is managing the stack
// 1. in mono repo optimize for tiniest stack possible
// 2. in public world optimize to *work* regardless of memory
unsigned long default_guardsize;
default_guardsize = getauxval(AT_PAGESZ);
pt->flags = PT_OWNSTACK;
pt->attr.__stacksize = MAX(pt->attr.__stacksize, GetStackSize());
pt->attr.__stacksize = _roundup2pow(pt->attr.__stacksize);
pt->attr.__guardsize = ROUNDUP(pt->attr.__guardsize, APE_GUARDSIZE);
if (pt->attr.__guardsize + APE_GUARDSIZE >= pt->attr.__stacksize) {
pt->attr.__guardsize = ROUNDUP(pt->attr.__guardsize, default_guardsize);
if (pt->attr.__guardsize + default_guardsize >= pt->attr.__stacksize) {
_pthread_free(pt);
return EINVAL;
}
if (pt->attr.__guardsize == APE_GUARDSIZE) {
if (pt->attr.__guardsize == default_guardsize) {
// user is wisely using smaller stacks with default guard size
pt->attr.__stackaddr =
mmap(0, pt->attr.__stacksize, PROT_READ | PROT_WRITE,