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Mint APE Loader v1.5

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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
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GPG key ID: BE714B4575D6E328
510 changed files with 1783 additions and 1483 deletions
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31
libc/intrin/getauxval.c
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@ -16,28 +16,33 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/errno.h"
#include "libc/intrin/_getauxval.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/errfuns.h"
#include "libc/sysv/consts/auxv.h"
/**
* Returns auxiliary value, or zero if kernel didn't provide it.
* Returns auxiliary value.
*
* This function is typically regarded as a libc implementation detail;
* thus, the source code is the documentation.
*
* @return auxiliary value or 0 if `at` not found
* @return auxiliary value or 0 if `key` not found
* @see libc/sysv/consts.sh
* @see System Five Application Binary Interface § 3.4.3
* @error ENOENT when value not found
* @asyncsignalsafe
*/
unsigned long getauxval(unsigned long at) {
unsigned long res, *ap;
for (ap = __auxv; ap[0]; ap += 2) {
if (at == ap[0]) {
return ap[1];
unsigned long getauxval(unsigned long key) {
struct AuxiliaryValue x;
x = _getauxval(key);
if (key == AT_PAGESZ) {
if (!x.isfound) {
x.value = 16384;
}
x.isfound = true;
}
if (x.isfound) {
return x.value;
} else {
errno = ENOENT;
return 0;
}
enoent();
return 0;
}