Skip to content

Instantly share code, notes, and snippets.

View emoon's full-sized avatar
:octocat:
Hacking on stuff!

Daniel Collin emoon

:octocat:
Hacking on stuff!
454 followers · 78 following
View GitHub Profile
@emoon
emoon / api_poindering.md
Last active March 21, 2023 10:13
API pondering

Figuring out backwards compatible APIs

Introduction

For some of the applications I'm doing I want there to be a plugin API that people can use to expand them and it's also something I'm using myself for proper dog fooding. The issue is that I really can't settle on how to do it.

Talking about APIs here it's all about native code which has to be C compatible.

If we are talking strictly about C APIs one way to do this is to have everything passed as versioned structs to the plugin. Let me give an example.

@emoon
emoon / windows.rs
Last active June 24, 2022 23:57
use bgfx::*;
use bgfx_rs::bgfx;
use core::ffi::c_void;
use glfw::{ffi::glfwTerminate, Action, Key, Window};
use raw_window_handle::{HasRawWindowHandle, RawWindowHandle};
use std::vec;
fn get_platform_data(window: &Window) -> PlatformData {
let mut pd = PlatformData::new();
match window.raw_window_handle() {
@emoon
emoon / rr_tests_threadripper_2950x.md
Last active July 28, 2020 12:49 
Linux arika 4.15.0-96-generic #97-Ubuntu SMP Wed Apr 1 03:25:46 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
AMD Ryzen Threadripper 2950X 16-Core Processor

  482 - record_replay_subject (Failed)
	483 - record_replay_subject-no-syscallbuf (Failed)
	555 - setuid-no-syscallbuf (Failed)
	692 - thread_yield (Failed)
@emoon
emoon / extract_ixa_music.c
Created June 8, 2019 20:19
Extract music from iXalance files (only seems to work for Astral blur right now)
// Code mostly extracted from https://www.libsdl.org/projects/ixalance/ but fixed a bunch of 64-bit issues with the code
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define INDEX_BIT_COUNT 10 // This is a total window of 4Kb
#define LENGTH_BIT_COUNT 4
#define WINDOW_SIZE ( 1 << INDEX_BIT_COUNT )
@emoon
emoon / gist:d7c0f8399f15ac0e2b87d63d5ed41d7d
Last active June 2, 2019 07:52
➜ fx68x_verilator git:(master) ✗ verilator --clk clk --debug --cc -Wno-fatal fx68k.v fx68k_MicroRom.v fx68k_NanoRom.v --exe sim_main.cpp
/usr/local/bin/verilator_bin_dbg --clk clk --debug --cc -Wno-fatal fx68k.v fx68k_MicroRom.v fx68k_NanoRom.v --exe sim_main.cpp
Starting Verilator 4.015 devel rev UNKNOWN_REV
- V3Os.cpp:57: export SYSTEMC_ARCH=linux # From sysname 'linux'
- V3File.cpp:218: --check-times failed: different command line
- V3GraphTest.cpp:358:selfTest:
- V3ParseImp.cpp:114: parseFile: fx68k
Preprocessing fx68k.v
- V3PreShell.cpp:151: Reading fx68k.v
- V3ParseImp.cpp:160: Lexing fx68k.v
@emoon
emoon / gist:95b7145972c82b2b985f77cf38df7a5d
Created June 2, 2019 07:49
-V{t0,98335}+++++TOP Evaluate Vfx68k::eval
-V{t0,98336}+ Vfx68k::_eval_debug_assertions
-V{t0,98337}+ Clock loop
-V{t0,98338}+ Vfx68k::_eval
-V{t0,98339}+ Vfx68k::_combo__TOP__10
-V{t0,98340}+ Vfx68k::_sequent__TOP__11
-V{t0,98341}+ Vfx68k_fx68k_bmux_1882::_settle__TOP__fx68k__DOT__excUnit__DOT__mux_1399_12__1
-V{t0,98342}+ Vfx68k_fx68k_bmux_1882::_settle__TOP__fx68k__DOT__excUnit__DOT__mux_1413_12__2
-V{t0,98343}+ Vfx68k_fx68k_bmux_1967::_settle__TOP__fx68k__DOT__excUnit__DOT__mux_regs68L__05BactualRx__05D_1348_24__6
-V{t0,98344}+ Vfx68k_fx68k_bmux_1967::_settle__TOP__fx68k__DOT__excUnit__DOT__mux_regs68H__05BactualRx__05D_1330_29__2
@emoon
emoon / 68000_instruction_timings.md
Created April 24, 2019 11:31

68000 instructions timings

When I started to write some pure 68000 I didn't find a nice doc that would cover all the op codes I used which a nice diagram for the cycle counts so I made one. This info has been assembled / hacked up using this tool https://github.com/emoon/68k_documentation_gen with a bunch of manual work and some automation for generating the cycle tables. If you find any errors in this (I'm sure there are plenty but it has been useful for me) please contact me or even better do a PR :)

ABCD

Operation: Source10 + Destination10 + X → Destination

@emoon
emoon / na test.md
Last active November 30, 2018 08:10 
extern crate nalgebra as na;
use na::{Matrix4};

pub fn mul(m0: &Matrix4<f32>, m1: &Matrix4<f32>) -> Matrix4<f32> {
    m0 * m1
}

-> output

@emoon
emoon / ui_test.rs
Created January 4, 2018 12:11
#[macro_use]
extern crate wrui;
use wrui::{SharedLibUi, Ui};
#[cfg(target_os="windows")]
fn get_wrui_path() -> &'static str {
"t2-output/win64-msvc-debug-default/wrui_qt.dll"
}
@emoon
emoon / early_amiga_debugger_tutorial.md
Last active May 18, 2018 21:58

Notice that this is early, things may or may not work at all.

  1. Clone https://github.com/emoon/fs-uae and build according to instructions. (Mac tested in my case)
  2. Clone ProDBG to this commit https://github.com/emoon/ProDBG/commit/a4a5c264a57b15d0325c585ff7995c31bb9216d4 and build according to instructions.
  3. Configure ProDBG Amiga UAE Settings so it looks something like this https://www.dropbox.com/s/a87dpxdf273bi6i/config.png?dl=0 (Config can be left empty)
  4. Make a test program and build it with vasm (or some other tool that can produce linedebug info)

Compile with these options (make sure to keep paths absolute) for vasm