70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/* This file is part of stage0.
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*
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* stage0 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* stage0 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with stage0. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "vm.h"
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/* Load program tape into Memory */
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void load_program(struct lilith* vm, char **argv)
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{
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FILE* program;
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program = fopen(argv[1], "r");
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/* Figure out how much we need to load */
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fseek(program, 0, SEEK_END);
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size_t end = ftell(program);
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rewind(program);
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/* Load the entire tape into memory */
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fread(vm->memory, 1, end, program);
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fclose(program);
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}
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void execute_vm(struct lilith* vm)
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{
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struct Instruction* current;
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current = calloc(1, sizeof(struct Instruction));
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while(!vm->halted)
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{
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read_instruction(vm, current);
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eval_instruction(vm, current);
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}
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free(current);
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return;
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}
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/* Standard C main program */
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int main(int argc, char **argv)
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{
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/* Make sure we have a program tape to run */
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if (argc < 2)
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{
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fprintf(stderr, "Usage: %s $FileName\nWhere $FileName is the name of the paper tape of the program being run\n", argv[0]);
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return EXIT_FAILURE;
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}
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/* Perform all the essential stages in order */
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struct lilith* vm;
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vm = create_vm(1 << 21);
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load_program(vm, argv);
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execute_vm(vm);
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destroy_vm(vm);
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return EXIT_SUCCESS;
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}
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