tekknolagi

// Compile this with -rdynamic and your emulator .so with -fPIC -fpie -shared
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "dcheck.h"

static char logfile_name[] = "/tmp/gbtracer.log.XXXXXX";
static int logfile_fd = 0;

EthanArbuckle

#import <objc/runtime.h>
#import <mach/mach.h>
#import <malloc/malloc.h>
#import <dlfcn.h>

typedef struct {
    Class targetClass;
    void (^block)(id object, BOOL isSubclass, BOOL *stop);
    dispatch_semaphore_t semaphore;
    BOOL shouldStop;

platomav

#!/usr/bin/env python3
# coding=utf-8

"""
Apple eficheck EALF parser

Copyright (C) 2024 Plato Mavropoulos
"""

import ctypes

niw

#!/usr/bin/env ruby

require 'optparse'
require 'pathname'

def update_name(name, options)
  pattern = /#{options[:rpath]}/
  if name =~ pattern
    suffix = $'
    if options[:path].join(suffix).exist?

theevilbit

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>ShutdownReportTimeout</key>
	<integer>2</integer>
	<key>SIGTERMTimeout</key>
	<integer>5</integer>
	<key>CrashOnSIGTERMTimeout</key>
	<true/>

EthanArbuckle

#import <CoreGraphics/CoreGraphics.h>
#import <Foundation/Foundation.h>
#import <objc/runtime.h>
#import <objc/message.h>
#import <dlfcn.h>

__attribute__((constructor)) static void init(void) {
    
    Method bundleIdentifierMethod = class_getInstanceMethod(objc_getClass("NSBundle"), sel_registerName("bundleIdentifier"));
    IMP newImp = imp_implementationWithBlock(^(id self) {

niw

The Hunt for the iOS 18 Neural Engine Bug: A Long Weekend Investigation

This is the tale of a long weekend spent uncovering a mysterious iOS 18 Neural Engine bug—a journey of problem-solving in a system where full visibility is elusive, especially in the locked-down world of Apple’s platforms. But the process I followed is a general approach you can use for any opaque system. It all began last week when I stumbled upon a strange behavior in my iOS app. The output generated from a CoreML model was completely broken—something I had never seen before. And after some digging, I realized this only happened when the model was running on the Neural Engine of iOS 18. The first step was triage. I implemented a quick workaround in the app: if the device is running iOS 18, switch from the Neural Engine to the GPU. This temporarily solved the issue, but I had no idea why it worked or whether other CoreML models in the app’s pipeline might also be affected. Without a deeper understanding of the root cause, I knew I cou

mildsunrise

resources to find what Apple/Asahi acronyms mean:

• check out this table
• search with site:asahilinux.org (maybe they talked about it in the blog)
• grep the linux and m1n1 repos

some other random acronyms, mostly peripherals of the SoC:

• AIC → Apple Interrupt Controller
• AP → Application Processor (where the OS runs)
• DART → Device Address Resolution Table (IOMMU)

mildsunrise

#!/usr/bin/env python3
'''
Decompresses a pbzx stream.

Simplified/corrected version of <https://gist.github.com/Lekensteyn/6e0840e77bc9bd013f57>

Example usage (from Python):

  decompress_pbzx(open('PayloadJava', 'rb'), open('PayloadJava.cpio', wb'))

steveroush

/**************************************************************************

add a grid to a graph in .dot format

**************************************************************************/
BEGIN{
  int     i, Indx, bcnt, LR;
  string  Type, Val, Gcolor[], Gstyle[], Gsize[], tmpstr;
  string  Hcolor, Vcolor, Hstyle, Vstyle, gridType, gridAlign;
  float   Hsize, Vsize, deltaX, deltaY, minX, minY, maxX, maxY;