7shi

kern/vnode_if.c
===============

int
VOP_WRITE(struct vnode *vp,
    struct uio *uio,
    int ioflag,
    kauth_cred_t cred)
{
    int error;

7shi

#include <stdio.h>

int main() {
    // 10バイトのファイルを作成
    char a[10] = {0};
    FILE *f = fopen("test", "wb");
    fwrite(a, 1, sizeof(a), f);
    fclose(f);

    f = fopen("test", "r+b");

7shi

スタート低レイヤー #6 発表資料（未完）

COM（シリアルポート）版の起動ディスク(boot-com1～5.fs）
http://ftp.jp.netbsd.org/pub/NetBSD/NetBSD-6.0.1/i386/installation/floppy/

VRAMのエミュレートが面倒なのでシリアルポート版を使用

ディスクイメージの作成箇所

build.sh releaseで作られる個所をmaster_qさんに教えていただきました。

7shi

let aout = System.IO.File.ReadAllBytes "../../write-3.out"
let read16 (a:byte[]) i = ((int a.[i + 1]) <<< 8) ||| (int a.[i])
let tsize = read16 aout 2
let dsize = read16 aout 4
printfn "tsize = %04x, dsize = %04x" tsize dsize
let mem = aout.[16 .. 16 + tsize + dsize - 1]
let mutable i = 0
let show len =
    printf "%04x: " i
    for j in 0 .. 5 do

7shi

open System

let rec loop () =
    let line = Console.ReadLine ()
    if line <> null then
        if line.Length > 60 then
            let mne = line.[60..].Split(' ').[0]
            printfn "%s %s:%s" line.[0..23] line.[40..43] mne
        loop ()
loop ()

7shi

int global = 10;

void null()
{
  return;
}

int return_zero()
{
  return 0;

7shi

$ cat sbrk.c                                                                       
#include <stdio.h>
#include <unistd.h>
int main() {
    printf("%p\n", sbrk(0));
    printf("%p\n", sbrk(0));
    return 0;
}

----

7shi

#include <windows.h>
#include <stdio.h>
#include <string.h>

void align(FILE *f, int size) {
    int pos = ftell(f);
    int aligned = (pos + size - 1) / size * size;
    for (; pos < aligned; ++pos) {
        fwrite("\0", 1, 1, f);
    }

7shi

let bin = System.IO.File.ReadAllBytes "../../cc"
let mutable i = 0
let show len asm =
    printf "%08X  " i
    for j = 0 to len - 1 do
        printf "%02X" bin.[i + j]
    for j = len to 8 do
        printf "  "
    printfn "%s" asm
    i <- i + len

7shi

// This file is in the public domain.

#r "System"
#r "System.Drawing"
#r "System.Windows.Forms"

open System
open System.IO
open System.Text
open System.Drawing