alisnic

# Usage
# class Foo
#  include MethodPatterns
#
#  defp :greet, check(:nil?) do |obj|
#    p 'HA! NIL!'
#  end
#  
#  defp :greet, match_any do |obj|
#    p 'Hey, Object!'

alisnic

global setjmp

setjmp:
  push ebx
  mov ebx,[8 + esp]

  mov [0 + ebx],edi ; buf->edi == 0(ebx) == EDI
  mov [4 + ebx],esi ; buf->esi == 4(ebx) == ESI
  mov [8 + ebx],ebp ; buf->ebp == 8(ebx) == EBP

alisnic

void longjmp(jmp_buf buf, int ret_val)
{
  unsigned *esp;

  /* make sure return value is not 0 */
  if(ret_val == 0)
    ret_val++;
  /* EAX is used for return values, so store it in jmp_buf.EAX */
  buf->eax = ret_val;
  /* get ESP for new stack */

alisnic

all: clean floppy.img

clean:
        rm -f *.o *.bin *.elf *.img

floppy.img: clean kernel.bin boot.bin
                cat boot.bin kernel.bin /dev/zero | dd bs=512 count=2880 of=floppy.img

loader.o: loader.asm
                nasm -f elf loader.asm -o loader.o