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1
.gitignore vendored
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@ -1,5 +1,4 @@
*.o *.o
*.a *.a
*.bin
m16vm m16vm
m16as m16as

44
README.md
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@ -7,50 +7,6 @@ The design is taken from the real world and tries to mimic existing RISC-archite
The instruction set is by no means designed to be "fast" or "optimal" but focus more on being easy to understand and modify/play with. The instruction set is by no means designed to be "fast" or "optimal" but focus more on being easy to understand and modify/play with.
Compile
-------
The code is compiled via Makefile.
```sh
$ make
```
The code is compiled into 2 programs:
* `m16as` - Assembler - Compiles assembler code into binary form.
* `m16vm` - Virtual Machine, will run binary code from a file.
Example for first compile assembly code and then run it:
```sh
$ ./m16as examples/asm/hello_world.as > prog.bin
$ ./m16vm ./prog.bin
HELLO WORLD
```
Usage
-----
#### m16as
```
Usage: ./m16as <inputfile> [ <outputfile> ]
```
`m16as` is pretty streigth forward. if no `outputfile` is given, the output is written to `stdout`
#### m16vm
```
usage: ./m16vm [ --dmem | --dreg ] <file>
```
* `--dmem` - debug memory, after the program has executed the last instruction, the contents of the memory is printed to `stdout`. NOTE: only the first 32 bytes are printed to
* `--dreg` - debug registers, after the program has executed the last instruction, the contents of the registers is printed to `stdout`.
Specification Specification
------------- -------------

5
as/as.c
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@ -1,6 +1,6 @@
/* as.c /* as.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -23,7 +23,7 @@
int usage(char *program) { int usage(char *program) {
fprintf(stderr, "Usage: %s <inputfile> [ <outputfile> ]\n", program); fprintf(stderr, "Usage: %s <inputfile> [ <outputfile ]\n", program);
return -1; return -1;
} }
@ -55,7 +55,6 @@ int main(int argc, char **argv) {
parse(fd_in, fd_out); parse(fd_in, fd_out);
fclose(fd_in); fclose(fd_in);
if (fd_out != stdout)
fclose(fd_out); fclose(fd_out);
return 0; return 0;
} }

2
as/asm_error.h
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@ -1,6 +1,6 @@
/* asm_error.h /* asm_error.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/ast.c
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@ -1,6 +1,6 @@
/* ast.c /* ast.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/ast.h
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@ -1,6 +1,6 @@
/* ast.h /* ast.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/codegen.c
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@ -1,6 +1,6 @@
/* codegen.c /* codegen.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/codegen.h
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@ -1,6 +1,6 @@
/* codegen.h /* codegen.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/lexer.c
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@ -1,6 +1,6 @@
/* lexer.c /* lexer.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/lexer.h
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@ -1,6 +1,6 @@
/* lexer.h /* lexer.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/lexer/grammar.h
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@ -2,7 +2,7 @@
* *
* Macros for the grammar. * Macros for the grammar.
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/lexer/number.c
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@ -1,6 +1,6 @@
/* lexer/number.c /* lexer/number.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/lexer/number.h
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@ -1,6 +1,6 @@
/* lexer/number.h /* lexer/number.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/parser.c
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@ -1,6 +1,6 @@
/* parser.c /* parser.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/parser.h
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@ -1,6 +1,6 @@
/* parser.h /* parser.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/symtab.c
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@ -1,6 +1,6 @@
/* symtab.c /* symtab.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
as/symtab.h
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@ -1,6 +1,6 @@
/* symtab.h /* symtab.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

1
examples/bin/invalid_inst.m16
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@ -1 +0,0 @@
/Hϊ/Eϊ/Lϊϊ/Oϊο ϊ/Wϊ/Oϊ/Rϊ/Lϊ/Dϊ

2
lib/error.c
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@ -1,6 +1,6 @@
/* error.c /* error.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
lib/include/error.h
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@ -1,6 +1,6 @@
/* error.h /* error.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
lib/include/instr.h
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@ -1,6 +1,6 @@
/* instr.h /* instr.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
lib/include/vector.h
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@ -1,6 +1,6 @@
/* vector.h /* vector.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
lib/vector.c
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@ -1,6 +1,6 @@
/* vector.c /* vector.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2018 Henrik Hautakoski <henrik@fiktivkod.org>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
vm/cpu.c
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@ -1,6 +1,6 @@
/* cpu.c /* cpu.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014-2015,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
vm/cpu.h
View file

@ -1,6 +1,6 @@
/* cpu.h /* cpu.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014-2015,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

12
vm/debug.c
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@ -1,6 +1,6 @@
/* debug.c /* debug.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -20,20 +20,14 @@
#include <stdio.h> #include <stdio.h>
#include "cpu.h" #include "cpu.h"
#include "debug.h" #include "debug.h"
#include "mm.h"
void debug_print_memory(uint8_t *mm) { void debug_print_memory(uint8_t *mm) {
int i = 0; int i = 0;
printf("\n" printf("\n");
" 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F\n"
" ------------------------------------------------");
for(i = 0; i < MEM_SIZE; i++) {
if ((i % 16) == 0)
printf("\n%.2X| ", i);
for(i = 0; i < 32; i++) {
printf("%.2X ", mm[i]); printf("%.2X ", mm[i]);
} }
printf("\n"); printf("\n");

2
vm/debug.h
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@ -1,6 +1,6 @@
/* debug.h /* debug.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
vm/instr_decode.c
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@ -1,6 +1,6 @@
/* instr_decode.c /* instr_decode.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
vm/instr_decode.h
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@ -1,6 +1,6 @@
/* instr_decode.h /* instr_decode.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

7
vm/mm.c
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@ -1,6 +1,6 @@
/* mm.c /* mm.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -21,6 +21,11 @@
#include <stdlib.h> #include <stdlib.h>
#include "mm.h" #include "mm.h"
#ifndef MEM_SIZE
/* Set a default memory size. (2^16) */
#define MEM_SIZE 65536
#endif
// Get a WORD aligned (16-bit) address. // Get a WORD aligned (16-bit) address.
// Casts the 8-bit pointer (mm_base_addr) to 16-bit (WORD) and add offset. // Casts the 8-bit pointer (mm_base_addr) to 16-bit (WORD) and add offset.
#define addr_align_word(offset) \ #define addr_align_word(offset) \

7
vm/mm.h
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@ -1,6 +1,6 @@
/* mm.h /* mm.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -22,11 +22,6 @@
#include <stdint.h> #include <stdint.h>
#ifndef MEM_SIZE
/* Set a default memory size. (2^8) */
#define MEM_SIZE 256
#endif
extern uint8_t *mm_base_addr; extern uint8_t *mm_base_addr;
void mm_init(); void mm_init();

2
vm/program.c
View file

@ -1,6 +1,6 @@
/* program.c /* program.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
vm/program.h
View file

@ -1,6 +1,6 @@
/* program.h /* program.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
vm/syscall.c
View file

@ -1,6 +1,6 @@
/* syscall.c /* syscall.c
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014-2015,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
vm/syscall.h
View file

@ -1,6 +1,6 @@
/* syscall.h /* syscall.h
* *
* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com> * Copyright (C) 2012,2014-2015,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

14
vm/vm.c
View file

@ -50,19 +50,15 @@ void run(struct program *prog) {
mm_exit(); mm_exit();
} }
int usage(const char* name) {
fprintf(stderr, "usage: %s [ --dmem | --dreg ] <file>\n", name);
return 1;
}
int main(int argc, char **argv) { int main(int argc, char **argv) {
struct program prog = { 0 }; struct program prog = { 0 };
const char *filename = NULL; const char *filename;
int i; int i;
if (argc < 2) { if (argc < 2) {
return usage(argv[0]); fprintf(stderr, "usage: %s [ --dmem | --dreg ] <file>\n", argv[0]);
return 1;
} }
// Parse options. // Parse options.
@ -82,10 +78,6 @@ int main(int argc, char **argv) {
} }
} }
if (filename == NULL) {
return usage(argv[0]);
}
if (program_loadfromfile(&prog, filename) < 0) if (program_loadfromfile(&prog, filename) < 0)
return 1; return 1;