putchar.c 860 B

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  1. /* Copyright (C) 2016 Jeremiah Orians
  2. * This file is part of M2-Planet.
  3. *
  4. * M2-Planet is free software: you can redistribute it and/or modify
  5. * it under the terms of the GNU General Public License as published by
  6. * the Free Software Foundation, either version 3 of the License, or
  7. * (at your option) any later version.
  8. *
  9. * M2-Planet is distributed in the hope that it will be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. * GNU General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU General Public License
  15. * along with M2-Planet. If not, see <http://www.gnu.org/licenses/>.
  16. */
  17. void putchar(int c)
  18. {
  19. asm("LOAD_IMMEDIATE_eax %4"
  20. "LOAD_IMMEDIATE_ebx %1"
  21. "LOAD_EFFECTIVE_ADDRESS_ecx %4"
  22. "COPY_ebx_to_edx"
  23. "INT_80");
  24. }