lighth7015

#include <stdint.h>

//! Byte swap unsigned short
uint16_t swap_uint16( uint16_t val ) 
{
    return (val << 8) | (val >> 8 );
}

//! Byte swap short
int16_t swap_int16( int16_t val ) 

lighth7015

#include <stdio.h>
#include <dlfcn.h>
#include <string.h>
#include <stdlib.h>
#include <libelf.h>
#include <sys/stat.h>
#include <sys/mman.h>

char* buffer;
static struct stat fileinfo;

lighth7015

[Unit]
Description=Minecraft Server: %i
After=network.target

[Service]
Type=simple
WorkingDirectory=/srv/minecraft/instances/%i

Environment="ServerArgs="
Environment="ServerName=minecraft_server.jar"

lighth7015

org 100h
bits 16

section .text
	global __start
	jmp __start

Unsupported	db 	'This application requires at least an 80386 processor.',	0x0d, 0x0a, '$'   ; $-terminated message
AlreadyInit	db 	'Already in Protected Mode!',					0x0d, 0x0a, '$'   ; $-terminated message
A20LineFail	db 	'A20 Line is Disabled or Not Present.',				0x0d, 0x0a, '$'   ; $-terminated message

lighth7015

org 0x100
start: use16
        cli					; disable interrupts

        in al, 0x92				; IO port method to enable A20
        or al, 2
        and al,0xFE
        out 0x92, al

	lgdt [descriptor] 			; load GDT header into GDT register, so the CPU can find the GDT entries

lighth7015

;---
;		Giza system bootstrap
;		- check for a supported CPU, exit with error message if unsupported
;		- Enter Protected Mode
;		- Call system bootstrap
;		- Leave Protected Mode
;		- exit (status = byte obtatained)
;
Unsupported db      "CPU: Not an 80386-class CPU; unable to start",0Dh,0Ah,'$'

lighth7015

const MyComponent = {
	PostOffice: {
		PaymentAuthorization: {
			fromEcho: true,
			isPublic: false
		},
		
		"Foo": "Bar",
	},

lighth7015

/usr/bin/ld.bfd: /tmp/main-12cd4f.o: in function `main':
main.c:(.text+0x20): undefined reference to `_GLOBAL_OFFSET_TABLE_'
/usr/bin/ld.bfd: ../lib/libdos.a(doscrt0.o): in function `argstart':
doscrt0.c:(.text+0x1b): undefined reference to `_GLOBAL_OFFSET_TABLE_'
/usr/bin/ld.bfd: ../lib/libdos.a(conio.o): in function `_getcinfo':
conio.c:(.text+0xf): undefined reference to `_GLOBAL_OFFSET_TABLE_'
/usr/bin/ld.bfd: ../lib/libdos.a(conio.o): in function `setpage':
conio.c:(.text+0x56): undefined reference to `_GLOBAL_OFFSET_TABLE_'
/usr/bin/ld.bfd: ../lib/libdos.a(conio.o): in function `getpage':
conio.c:(.text+0xa6): undefined reference to `_GLOBAL_OFFSET_TABLE_'

lighth7015

$ clang -nostdlib -fno-{stack-protector,jump-tables,addrsig,builtin} -ffreestanding -I../include -oexample.com  -Wall \
  -Wextra -pedantic -mregparm=3 -std=c99 -Oz -m16 -march=i386 -Wl,--omagic,--script=../lib/doscom.ld -fuse-ld=bfd main.c \
  ../lib/libdos.a
/usr/bin/ld.bfd: /tmp/main-de9979.o: in function `main':
main.c:(.text+0x20): undefined reference to `_GLOBAL_OFFSET_TABLE_'
/usr/bin/ld.bfd: ../lib/libdos.a(doscrt0.o): in function `argstart':
doscrt0.c:(.text+0x1b): undefined reference to `_GLOBAL_OFFSET_TABLE_'
/usr/bin/ld.bfd: ../lib/libdos.a(conio.o): in function `_getcinfo':
conio.c:(.text+0xf): undefined reference to `_GLOBAL_OFFSET_TABLE_'
/usr/bin/ld.bfd: ../lib/libdos.a(conio.o): in function `setpage':

lighth7015

#define _GNU_SOURCE

#define STATIC_DECLARE_INIT(sym, name, id, ...) \
    sym __attribute__ ((section (id))) name = { __VA_ARGS__ };

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdbool.h>