M2-Planet/functions/malloc.c

40 lines
1.1 KiB
C

/* Copyright (C) 2016 Jeremiah Orians
* This file is part of M2-Planet.
*
* M2-Planet is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* M2-Planet is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with M2-Planet. If not, see <http://www.gnu.org/licenses/>.
*/
// CONSTANT NULL 0
void* malloc(int size)
{
asm("STORE_eax_into_ESP_IMMEDIATE8 !4"
"PUSH_eax"
"LOAD_IMMEDIATE_eax %45"
"LOAD_IMMEDIATE_ebx %0"
"INT_80"
"POP_ebx"
"ADD_eax_to_ebx"
"PUSH_eax"
"PUSH_ebx"
"LOAD_IMMEDIATE_eax %45"
"INT_80"
"POP_ebx"
"CMP"
"POP_eax"
"JUMP_EQ8 !FUNCTION_malloc_Done"
"LOAD_IMMEDIATE_eax %-1"
":FUNCTION_malloc_Done");
}