Add functions
This commit is contained in:
Augusto Gunsch
parent
cdd7e2a99c
commit
a6667a8f5d
2
Makefile
2
Makefile
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@ -1,4 +1,4 @@
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FILES = parser.c main.c translator.c
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FILES = parser.c main.c translator.c util.c
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INCLUDES = -I.
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CFLAGS = -std=c99 -g
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OUTFILE = vmtranslator
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@ -0,0 +1,55 @@
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#define BOOTSTRAPN 52
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const char* bootstrapcode[BOOTSTRAPN] = {
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"@256",
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"D=A",
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"@SP",
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"M=D",
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"@BOOTSTRAP$ret",
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"D=A",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"@LCL",
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"D=M",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"@ARG",
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"D=M",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"@THIS",
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"D=M",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"@THAT",
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"D=M",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"@5",
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"D=A",
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"@SP",
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"D=M-D",
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"@ARG",
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"M=D",
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"@SP",
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"D=M",
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"@LCL",
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"M=D",
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"@Sys.init",
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"0;JMP",
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"(BOOTSTRAP$ret)"
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};
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222
main.c
222
main.c
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@ -2,53 +2,215 @@
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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include "parser.h"
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#include "translator.h"
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#include "bootstrap.h"
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#include "util.h"
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char* verfname(char* fname) {
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int len = strlen(fname);
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if(len > 3) {
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int extind = len - 3;
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char* extstr = fname + (sizeof(char)*extind);
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if(strcmp(extstr, ".vm") == 0) {
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struct TranslationList {
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char** files;
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char** fnames;
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int filecount;
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int filessz;
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char* output;
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};
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char* getname(char* f, int len) {
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int startind = 0;
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for(int i = extind-1; i >= 0; i--) {
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if(fname[i] == '/') {
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int endind = len - 1;
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short readsmt = 0;
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for(int i = endind; i >= 0; i--) {
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if(f[i] == '/') {
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if(!readsmt) {
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endind = i-1;
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f[i] = '\0';
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continue;
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}
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startind = i+1;
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break;
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}
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if(f[i] == '.')
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endind = i-1;
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readsmt = 1;
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}
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int size = sizeof(char)*(extind - startind + 1);
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char* startstr = fname + (sizeof(char)*startind);
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int size = sizeof(char)*(endind - startind + 2);
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char* startstr = f + (sizeof(char)*startind);
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char* retstr = (char*)malloc(size);
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snprintf(retstr, size, "%s", startstr);
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return retstr;
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}
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}
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fprintf(stderr, "Name format must be Xxx.vm\n");
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exit(1);
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}
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char* getoutname(char* fname) {
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int len = strlen(fname);
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int sz = sizeof(char)*(len+2);
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char* outname = (char*)malloc(sz);
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strcpy(outname, fname);
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int ind = len-2;
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char* ext = sizeof(char)*ind+outname;
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snprintf(ext, 4, "asm");
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char* getfullname(char* f, int len) {
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int endind = len - 1;
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short readsmt = 0;
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for(int i = endind; i >= 0; i--) {
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if(f[i] == '/') {
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if(!readsmt) {
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endind = i-1;
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continue;
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}
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break;
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}
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if(f[i] == '.')
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endind = i-1;
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readsmt = 1;
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}
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int size = sizeof(char)*(endind + 2);
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char* retstr = (char*)malloc(size);
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snprintf(retstr, size, "%s", f);
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return retstr;
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}
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short isdotvm(char* f, int extind) {
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char* extstr = f + (sizeof(char) * extind);
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return strcmp(extstr, ".vm") == 0;
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}
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short isdir(char* f, int len) {
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short readsmt = 0;
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for(int i = len-1; i >= 0; i--) {
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if(f[i] == '.')
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if(readsmt)
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return 0;
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else
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continue;
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if(f[i] == '/')
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return 1;
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readsmt = 1;
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}
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return 1;
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}
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char* getoutname(char* input, int len, short isdir) {
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char* outname;
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if(isdir) {
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char* name = getname(input, len);
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int sz = sizeof(char) * (strlen(name)+len+6);
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outname = (char*)malloc(sz);
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snprintf(outname, sz, "%s/%s.asm", input, name);
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free(name);
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}
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else {
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char* name = getfullname(input, len);
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int sz = sizeof(char) * (strlen(name)+5);
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outname = (char*)malloc(sz);
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snprintf(outname, sz, "%s.asm", name);
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free(name);
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}
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return outname;
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}
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void addfile(struct TranslationList* l, char* fullname, char* name) {
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int count = l->filecount;
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int targsize = (count + 1) * sizeof(char*);
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if(l->filessz < targsize) {
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int newsz = targsize * 2;
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l->files = realloc(l->files, newsz);
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l->fnames = realloc(l->fnames, newsz);
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l->filessz = newsz;
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}
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l->files[count] = fullname;
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l->fnames[count] = name;
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l->filecount++;
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}
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struct TranslationList* getfiles(char* input) {
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int filessz = sizeof(char*) * 16;
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struct TranslationList* filelist = (struct TranslationList*)malloc(sizeof(struct TranslationList));
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filelist->files = (char**)malloc(filessz);
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filelist->fnames = (char**)malloc(filessz);
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filelist->filessz = filessz;
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filelist->filecount = 0;
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int inplen = strlen(input);
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short isitdir = isdir(input, inplen);
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if(isitdir) {
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DIR* dir = opendir(input);
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if(dir == NULL) {
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fprintf(stderr, "%s\n", strerror(errno));
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exit(1);
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}
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struct dirent* thisfile;
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while(thisfile = readdir(dir), thisfile != NULL) {
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int len = strlen(thisfile->d_name);
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if(len > 3) {
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int extind = len - 3;
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if(isdotvm(thisfile->d_name, extind)) {
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int sz = sizeof(char)*(len+inplen+2);
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char* str = (char*)malloc(sz);
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snprintf(str, sz, "%s/%s", input, thisfile->d_name);
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char* name = getname(thisfile->d_name, len);
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addfile(filelist, str, name);
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}
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}
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}
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closedir(dir);
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if(filelist->filecount <= 0) {
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fprintf(stderr, "Directory doesn't have any .vm file\n");
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exit(1);
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}
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filelist->output = getoutname(input, inplen, isitdir);
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}
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else {
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int extind = inplen - 3;
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if(isdotvm(input, extind)){
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char* name = getname(input, inplen);
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char* f = heapstr(input, inplen);
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addfile(filelist, f, name);
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}
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else {
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fprintf(stderr, "Input file must be named like 'Xxx.vm'\n");
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exit(1);
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}
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filelist->output = getoutname(input, inplen, isitdir);
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}
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return filelist;
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}
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void freetranslationlist(struct TranslationList* ls) {
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for(int i = 0; i < ls->filecount; i++) {
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free(ls->files[i]);
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free(ls->fnames[i]);
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}
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free(ls->files);
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free(ls->fnames);
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free(ls->output);
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free(ls);
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}
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int main(int argc, char* argv[]) {
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if(argc < 2) {
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fprintf(stderr, "Usage: %s {file}\n", argv[0]);
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return 1;
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}
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// file name validating
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char* fname = verfname(argv[1]);
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FILE* input = fopen(argv[1], "r");
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struct TranslationList* ls = getfiles(argv[1]);
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FILE* output = fopen(ls->output, "w");
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for(int i = 0; i < BOOTSTRAPN; i++) {
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fprintf(output, "%s\n", bootstrapcode[i]);
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}
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for(int i = 0; i < ls->filecount; i++) {
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// file name validating
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char* fname = ls->fnames[i];
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FILE* input = fopen(ls->files[i], "r");
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if(input == NULL) {
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fprintf(stderr, "%s\n", strerror(errno));
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@ -63,18 +225,14 @@ int main(int argc, char* argv[]) {
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struct Translator* t = mktranslator(p->lns, fname);
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translate(t);
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freeparser(p);
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free(fname);
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// output
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char* outname = getoutname(argv[1]);
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FILE* output = fopen(outname, "w");
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printasmlns(t, output);
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fclose(output);
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// freeing rest
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free(outname);
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freetranslator(t);
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}
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freetranslationlist(ls);
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fclose(output);
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return 0;
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}
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149
templates.h
149
templates.h
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@ -1,7 +1,7 @@
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#ifndef templates
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#define templates
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#define TPUSHN 10
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#define TPUSHN 11
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char* tpush[TPUSHN] = {
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"",
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"",
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@ -10,31 +10,34 @@ char* tpush[TPUSHN] = {
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"A=D+A",
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"D=M",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"A=M-1",
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"M=D"
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};
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#define TPUSHCONSN 7
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#define TPUSHCONSN 8
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char* tpushcons[TPUSHCONSN] = {
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"",
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"",
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"D=A",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"A=M-1",
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"M=D"
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};
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#define TPUSHSTATN 7
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#define TPUSHSTATN 8
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char* tpushstat[TPUSHSTATN] = {
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"",
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"",
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"D=M",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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"A=M-1",
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"M=D"
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};
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#define TPUSHTEMPN TPUSHSTATN
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@ -43,7 +46,7 @@ char** tpushtemp = tpushstat;
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#define TPUSHPOINTERN TPUSHSTATN
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char** tpushpointer = tpushstat;
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#define TPOPN 14
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#define TPOPN 13
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char* tpop[TPOPN] = {
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"",
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"",
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@ -53,20 +56,18 @@ char* tpop[TPOPN] = {
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"@R13",
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"M=D",
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"@SP",
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"M=M-1",
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"A=M",
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"AM=M-1",
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"D=M",
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"@R13",
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"A=M",
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"M=D"
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};
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#define TPOPSTATN 7
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#define TPOPSTATN 6
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char* tpopstat[TPOPSTATN] = {
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"",
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"@SP",
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"M=M-1",
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"A=M",
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"AM=M-1",
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"D=M",
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"",
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""
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@ -78,12 +79,11 @@ char** tpoptemp = tpopstat;
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#define TPOPPOINTERN TPOPSTATN
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char** tpoppointer = tpopstat;
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#define TARITHN 7
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#define TARITHN 6
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char* tarith[TARITHN] = {
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"",
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"@SP",
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"M=M-1",
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"A=M",
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"AM=M-1",
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"D=M",
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"A=A-1",
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""
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@ -105,12 +105,11 @@ char* tnot[TNOTN] = {
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"M=!M",
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};
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#define TCOMPN 14
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#define TCOMPN 13
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char* tcomp[TCOMPN] = {
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"",
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"@SP",
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"M=M-1",
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"A=M",
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"AM=M-1",
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"D=M",
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"A=A-1",
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"D=D-M",
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@ -136,15 +135,117 @@ char* tgoto[TGOTON] = {
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"0;JMP"
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};
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#define TIFGOTON 7
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#define TIFGOTON 6
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char* tifgoto[TIFGOTON] = {
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"",
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"@SP",
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"M=M-1",
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"A=M",
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"AM=M-1",
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"D=M",
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"",
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"D;JNE"
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};
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#define TCALLSTARTN 8
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char* tcallstart[TCALLSTARTN] = {
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"",
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"",
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"D=A",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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};
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#define TCALLPUSHN 7
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char* tcallpush[TCALLPUSHN] = {
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"",
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"D=M",
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"@SP",
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"A=M",
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"M=D",
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"@SP",
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"M=M+1",
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};
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#define TCALLSETARGN 8
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char* tcallsetarg[TCALLSETARGN] = {
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"@SP",
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"D=M",
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"@LCL",
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"M=D",
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"",
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"D=D-A",
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"@ARG",
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"M=D"
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};
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#define TCALLJMPN 3
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char* tcalljmp[TCALLJMPN] = {
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"",
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"0;JMP",
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""
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};
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#define TFRAMEVARSN 4
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char* tframevars[TFRAMEVARSN] = {
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"@LCL",
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"@ARG",
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"@THIS",
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"@THAT"
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};
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#define TFUNCTIONN 2
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char* tfunction[TFUNCTIONN] = {
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"",
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""
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};
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#define TFUNCTIONPUSHN 5
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char* tfunctionpush[TFUNCTIONPUSHN] = {
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"@SP",
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"A=M",
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"M=0",
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"@SP",
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"M=M+1"
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};
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|
||||
#define TSTARTRETURNN 18
|
||||
char* tstartreturn[TSTARTRETURNN] = {
|
||||
"",
|
||||
"@LCL",
|
||||
"D=M",
|
||||
"@5",
|
||||
"A=D-A",
|
||||
"D=M",
|
||||
"@R13",
|
||||
"M=D",
|
||||
"@SP",
|
||||
"A=M-1",
|
||||
"D=M",
|
||||
"@ARG",
|
||||
"A=M",
|
||||
"M=D",
|
||||
"@ARG",
|
||||
"D=M+1",
|
||||
"@SP",
|
||||
"M=D"
|
||||
};
|
||||
|
||||
#define TRETPOPN 5
|
||||
char* tretpop[TRETPOPN] = {
|
||||
"@LCL",
|
||||
"AM=M-1",
|
||||
"D=M",
|
||||
"",
|
||||
"M=D",
|
||||
};
|
||||
|
||||
#define TENDRETURNN 3
|
||||
char* tendreturn[TENDRETURNN] = {
|
||||
"@R13",
|
||||
"A=M",
|
||||
"0;JMP"
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
|
|||
320
translator.c
320
translator.c
|
|
@ -4,8 +4,7 @@
|
|||
#include <ctype.h>
|
||||
#include "translator.h"
|
||||
#include "templates.h"
|
||||
#define CMPLIMIT 9999
|
||||
#define CMPLEN 4
|
||||
#include "util.h"
|
||||
|
||||
void pushtoclean(struct Translator* t, char* topush) {
|
||||
int nextsz = sizeof(char*)*(t->tocleanind+1);
|
||||
|
|
@ -21,32 +20,21 @@ void freetoclean(struct Translator* t) {
|
|||
for(int i = 0; i < t->tocleanind; i++)
|
||||
free(t->toclean[i]);
|
||||
free(t->toclean);
|
||||
t->tocleansize = 0;
|
||||
t->tocleanind = 0;
|
||||
}
|
||||
|
||||
void freeasmlns(struct Translator* t) {
|
||||
for(int i = 0; i < t->asmind; i++)
|
||||
free(t->asmlns[i]);
|
||||
free(t->asmlns);
|
||||
t->asmsize = 0;
|
||||
t->asmind = 0;
|
||||
}
|
||||
|
||||
void freetranslator(struct Translator* t) {
|
||||
freeasmlns(t);
|
||||
free(t->asmlns);
|
||||
freetoclean(t);
|
||||
free(t);
|
||||
}
|
||||
|
||||
void printasmlns(struct Translator* t, FILE* stream) {
|
||||
for(int i = 0; i < t->asmind; i++)
|
||||
fprintf(stream, "%s\n", t->asmlns[i]->instr);
|
||||
fprintf(stream, "%s\n", t->asmlns[i]);
|
||||
}
|
||||
|
||||
char* heapstr(struct Translator* t, const char* input) {
|
||||
char* newstr = (char*)malloc(sizeof(char)*(strlen(input)+1));
|
||||
strcpy(newstr, input);
|
||||
char* heapstrtoclean(struct Translator* t, const char* input) {
|
||||
char* newstr = heapstr(input, strlen(input));
|
||||
pushtoclean(t, newstr);
|
||||
return newstr;
|
||||
}
|
||||
|
|
@ -54,14 +42,14 @@ char* heapstr(struct Translator* t, const char* input) {
|
|||
char* switchseg(struct Translator* t, struct line* ln) {
|
||||
char* seg = ln->tokens[1];
|
||||
if(!strcmp(seg, "local"))
|
||||
return heapstr(t, "@LCL");
|
||||
return heapstrtoclean(t, "@LCL");
|
||||
if(!strcmp(seg, "argument"))
|
||||
return heapstr(t, "@ARG");
|
||||
return heapstrtoclean(t, "@ARG");
|
||||
if(!strcmp(seg, "this"))
|
||||
return heapstr(t, "@THIS");
|
||||
return heapstrtoclean(t, "@THIS");
|
||||
if(!strcmp(seg, "that"))
|
||||
return heapstr(t, "@THAT");
|
||||
fprintf(stderr, "Unrecognized segment '%s'; line %i\n", seg, ln->truen);
|
||||
return heapstrtoclean(t, "@THAT");
|
||||
fprintf(stderr, "Unrecognized segment '%s'; file %s.vm, line %i\n", t->fname, seg, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
|
|
@ -99,29 +87,67 @@ char* mkcom(struct Translator* t, struct line* ln) {
|
|||
return comment;
|
||||
}
|
||||
|
||||
void checkind(struct line* ln, int indlen) {
|
||||
void checknumber(struct Translator* t, struct line* ln, int indlen, char* name, char* n) {
|
||||
for(int i = 0; i < indlen; i++)
|
||||
if(!isdigit(ln->tokens[2][i])) {
|
||||
fprintf(stderr, "Invalid index '%s'; line %i\n", ln->tokens[2], ln->truen);
|
||||
if(!isdigit(n[i])) {
|
||||
fprintf(stderr, "Invalid %s '%s'; file %s.vm, line %i\n", t->fname, name, n, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
void checknargs(struct Translator* t, struct line* ln, int nargslen) {
|
||||
checknumber(t, ln, nargslen, "argument number", ln->tokens[2]);
|
||||
}
|
||||
|
||||
void checknlocals(struct Translator* t, struct line* ln, int nlocalslen) {
|
||||
checknumber(t, ln, nlocalslen, "local variable number", ln->tokens[2]);
|
||||
}
|
||||
|
||||
void checkind(struct Translator* t, struct line* ln, int indlen) {
|
||||
checknumber(t, ln, indlen, "index", ln->tokens[2]);
|
||||
}
|
||||
|
||||
int countplaces(int n) {
|
||||
int places = 1;
|
||||
int divisor = 1;
|
||||
if(n < 0) {
|
||||
n = -n;
|
||||
places++;
|
||||
}
|
||||
while(n / divisor >= 10) {
|
||||
places++;
|
||||
divisor *= 10;
|
||||
}
|
||||
return places;
|
||||
}
|
||||
|
||||
void checkinfun(struct Translator* t, struct line* ln) {
|
||||
if(t->funcount <= 0) {
|
||||
fprintf(stderr, "Instruction should be part of a function; file %s.vm, line %i\n", t->fname, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
char* mkspeciallab(struct Translator* t, struct line* ln, char* suffix, int* ind) {
|
||||
checkinfun(t, ln);
|
||||
(*ind)++;
|
||||
int sz = (t->lastfunlen + countplaces(*ind) + strlen(suffix) + 3) * sizeof(char);
|
||||
char* lab = (char*)malloc(sz);
|
||||
snprintf(lab, sz, "%s$%s.%i", t->lastfun, suffix, (*ind));
|
||||
pushtoclean(t, lab);
|
||||
return lab;
|
||||
}
|
||||
|
||||
char* mkcmplab(struct Translator* t, struct line* ln) {
|
||||
t->compcount++;
|
||||
if(t->compcount > CMPLIMIT) {
|
||||
fprintf(stderr, "Reached comparison limit (%i); line %i\n", CMPLIMIT, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
int newsz = (t->fnamelen + CMPLEN + 6) * sizeof(char);
|
||||
char* label = (char*)malloc(newsz);
|
||||
snprintf(label, newsz, "%s-CMP-%i", t->fname, t->compcount);
|
||||
pushtoclean(t, label);
|
||||
return label;
|
||||
return mkspeciallab(t, ln, "cmp", &(t->cmpind));
|
||||
}
|
||||
|
||||
char* mkretlab(struct Translator* t, struct line* ln) {
|
||||
return mkspeciallab(t, ln, "ret", &(t->retind));
|
||||
}
|
||||
|
||||
char* mkind(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkind(ln, indlen);
|
||||
checkind(t, ln, indlen);
|
||||
int newsz = sizeof(char) * (indlen + 2);
|
||||
char* newind = (char*)malloc(newsz);
|
||||
snprintf(newind, newsz, "@%s", ln->tokens[2]);
|
||||
|
|
@ -137,6 +163,14 @@ char* atlab(struct Translator* t, char* label, int labellen) {
|
|||
return newind;
|
||||
}
|
||||
|
||||
char* atn(struct Translator* t, int n) {
|
||||
int newsz = sizeof(char) * (countplaces(n) + 2);
|
||||
char* newind = (char*)malloc(newsz);
|
||||
snprintf(newind, newsz, "@%i", n);
|
||||
pushtoclean(t, newind);
|
||||
return newind;
|
||||
}
|
||||
|
||||
char* mklab(struct Translator* t, char* label, int labellen) {
|
||||
int newsz = sizeof(char) * (labellen + 3);
|
||||
char* newind = (char*)malloc(newsz);
|
||||
|
|
@ -145,8 +179,16 @@ char* mklab(struct Translator* t, char* label, int labellen) {
|
|||
return newind;
|
||||
}
|
||||
|
||||
char* mkgotolab(struct Translator* t, struct line* ln) {
|
||||
int sz = sizeof(char) * (t->lastfunlen + strlen(ln->tokens[1]) + 3);
|
||||
char* lab = (char*)malloc(sz);
|
||||
snprintf(lab, sz, "@%s$%s", t->lastfun, ln->tokens[1]);
|
||||
pushtoclean(t, lab);
|
||||
return lab;
|
||||
}
|
||||
|
||||
char* mkstatind(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkind(ln, indlen);
|
||||
checkind(t, ln, indlen);
|
||||
int newsz = sizeof(char) * (t->fnamelen + indlen + 3);
|
||||
char* newind = (char*)malloc(newsz);
|
||||
snprintf(newind, newsz, "@%s.%s", t->fname, ln->tokens[2]);
|
||||
|
|
@ -155,7 +197,7 @@ char* mkstatind(struct Translator* t, struct line* ln, int indlen) {
|
|||
}
|
||||
|
||||
char* mktempind(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkind(ln, indlen);
|
||||
checkind(t, ln, indlen);
|
||||
int intind = atoi(ln->tokens[2]);
|
||||
int newsz = sizeof(char) * (indlen + 3);
|
||||
char* newind = (char*)malloc(newsz);
|
||||
|
|
@ -166,7 +208,7 @@ char* mktempind(struct Translator* t, struct line* ln, int indlen) {
|
|||
|
||||
char* mkpointerind(struct Translator* t, struct line* ln, int indlen) {
|
||||
if(indlen > 1) {
|
||||
fprintf(stderr, "Invalid index '%s'; line %i\n", ln->tokens[2], ln->truen);
|
||||
fprintf(stderr, "Invalid index '%s'; file %s.vm, line %i\n", t->fname, ln->tokens[2], ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
char* ptr;
|
||||
|
|
@ -178,7 +220,7 @@ char* mkpointerind(struct Translator* t, struct line* ln, int indlen) {
|
|||
ptr = "THAT";
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "Invalid index '%s'; line %i\n", ln->tokens[2], ln->truen);
|
||||
fprintf(stderr, "Invalid index '%s'; file %s.vm, line %i\n", t->fname, ln->tokens[2], ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
int newsz = sizeof(char) * 6;
|
||||
|
|
@ -189,42 +231,58 @@ char* mkpointerind(struct Translator* t, struct line* ln, int indlen) {
|
|||
}
|
||||
|
||||
void checkasmsize(struct Translator* t, int toadd) {
|
||||
int targ = sizeof(struct asmln*)*(t->asmind+toadd);
|
||||
int targ = sizeof(char*)*(t->asmind+toadd);
|
||||
if(targ >= t->asmsize) {
|
||||
t->asmsize = targ * 2;
|
||||
t->asmlns = (struct asmln**)realloc(t->asmlns, t->asmsize);
|
||||
t->asmlns = (char**)realloc(t->asmlns, t->asmsize);
|
||||
}
|
||||
}
|
||||
|
||||
struct asmln* mkasmln(struct line* ln, char* content) {
|
||||
struct asmln* newln = (struct asmln*)malloc(sizeof(struct asmln));
|
||||
newln->truen = ln->truen;
|
||||
newln->instr = content;
|
||||
return newln;
|
||||
}
|
||||
|
||||
void checkopamnt(int amnt, struct line* ln) {
|
||||
void checkopamnt(struct Translator* t, int amnt, struct line* ln) {
|
||||
if(ln->tokenscount < 2) {
|
||||
fprintf(stderr, "Missing memory segment; line %i", ln->truen);
|
||||
fprintf(stderr, "Missing memory segment; file %s.vm, line %i\n", t->fname, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
if(amnt > 2)
|
||||
if(ln->tokenscount < 3) {
|
||||
fprintf(stderr, "Missing operation index; line %i", ln->truen);
|
||||
fprintf(stderr, "Missing operation index; file %s.vm, line %i\n", t->fname, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
void addasmlns(struct Translator* t, struct line* ln, char** insts, int instcount) {
|
||||
void checklab(struct Translator* t, struct line* ln) {
|
||||
if(ln->tokenscount < 2) {
|
||||
fprintf(stderr, "Expected label; file %s.vm, line %i\n", t->fname, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
void checkfun(struct Translator* t, struct line* ln) {
|
||||
if(ln->tokenscount < 2) {
|
||||
fprintf(stderr, "Expected function; file %s.vm, line %i\n", t->fname, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if(ln->tokenscount < 3) {
|
||||
fprintf(stderr, "Expected argument amount; file %s.vm, line %i\n", t->fname, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
void addasm(struct Translator* t, char** insts, int instcount) {
|
||||
checkasmsize(t, instcount);
|
||||
|
||||
for(int i = 0; i < instcount; i++) {
|
||||
t->asmlns[t->asmind] = insts[i];
|
||||
t->asmind++;
|
||||
}
|
||||
}
|
||||
|
||||
void addasmlns(struct Translator* t, struct line* ln, char** insts, int instcount) {
|
||||
// instruction comment
|
||||
insts[0] = mkcom(t, ln);
|
||||
|
||||
for(int i = 0; i < instcount; i++) {
|
||||
t->asmlns[t->asmind] = mkasmln(ln, insts[i]);
|
||||
t->asmind++;
|
||||
}
|
||||
addasm(t, insts, instcount);
|
||||
}
|
||||
|
||||
void startpoppush(struct Translator* t, struct line* ln, int indlen, char** insts) {
|
||||
|
|
@ -232,7 +290,7 @@ void startpoppush(struct Translator* t, struct line* ln, int indlen, char** inst
|
|||
insts[1] = switchseg(t, ln);
|
||||
|
||||
// D=M
|
||||
insts[2] = heapstr(t, "D=M");
|
||||
insts[2] = heapstrtoclean(t, "D=M");
|
||||
|
||||
// @i
|
||||
insts[3] = mkind(t, ln, indlen);
|
||||
|
|
@ -277,7 +335,7 @@ void popstat(struct Translator* t, struct line* ln, int indlen) {
|
|||
tpopstat[TPOPSTATN-2] = mkstatind(t, ln, indlen);
|
||||
|
||||
// M=D
|
||||
tpopstat[TPOPSTATN-1] = heapstr(t, "M=D");
|
||||
tpopstat[TPOPSTATN-1] = heapstrtoclean(t, "M=D");
|
||||
|
||||
addasmlns(t, ln, tpopstat, TPOPSTATN);
|
||||
}
|
||||
|
|
@ -287,7 +345,7 @@ void poptemp(struct Translator* t, struct line* ln, int indlen) {
|
|||
tpoptemp[TPOPTEMPN-2] = mktempind(t, ln, indlen);
|
||||
|
||||
// M=D
|
||||
tpoptemp[TPOPTEMPN-1] = heapstr(t, "M=D");
|
||||
tpoptemp[TPOPTEMPN-1] = heapstrtoclean(t, "M=D");
|
||||
|
||||
addasmlns(t, ln, tpoptemp, TPOPTEMPN);
|
||||
}
|
||||
|
|
@ -297,7 +355,7 @@ void poppointer(struct Translator* t, struct line* ln, int indlen) {
|
|||
tpoppointer[TPOPPOINTERN-2] = mkpointerind(t, ln, indlen);
|
||||
|
||||
// M=D
|
||||
tpoppointer[TPOPPOINTERN-1] = heapstr(t, "M=D");
|
||||
tpoppointer[TPOPPOINTERN-1] = heapstrtoclean(t, "M=D");
|
||||
|
||||
addasmlns(t, ln, tpoppointer, TPOPPOINTERN);
|
||||
}
|
||||
|
|
@ -309,7 +367,7 @@ void pop(struct Translator* t, struct line* ln, int indlen) {
|
|||
}
|
||||
|
||||
void arith(struct Translator* t, struct line* ln, char* op) {
|
||||
tarith[TARITHN-1] = heapstr(t, op);
|
||||
tarith[TARITHN-1] = heapstrtoclean(t, op);
|
||||
|
||||
addasmlns(t, ln, tarith, TARITHN);
|
||||
}
|
||||
|
|
@ -322,7 +380,7 @@ void comp(struct Translator* t, struct line* ln, char* op) {
|
|||
tcomp[TCOMPN-6] = atlab(t, label, labellen);
|
||||
|
||||
// D;J(op)
|
||||
int opsz = sizeof(char)*6;
|
||||
int opsz = sizeof(char) * 6;
|
||||
char* trueop = (char*)malloc(opsz);
|
||||
snprintf(trueop, opsz, "D;J%s", op);
|
||||
tcomp[TCOMPN-5] = trueop;
|
||||
|
|
@ -335,43 +393,116 @@ void comp(struct Translator* t, struct line* ln, char* op) {
|
|||
};
|
||||
|
||||
void label(struct Translator* t, struct line* ln) {
|
||||
if(ln->tokenscount < 2) {
|
||||
fprintf(stderr, "Expected label; line %i", ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
checklab(t, ln);
|
||||
|
||||
// (label)
|
||||
tlabel[TLABELN-1] = mklab(t, ln->tokens[1], strlen(ln->tokens[1]));
|
||||
// (funcname$label)
|
||||
checkinfun(t, ln);
|
||||
int sz = (t->lastfunlen + strlen(ln->tokens[1]) + 4) * sizeof(char);
|
||||
char* lab = (char*)malloc(sz);
|
||||
snprintf(lab, sz, "(%s$%s)", t->lastfun, ln->tokens[1]);
|
||||
pushtoclean(t, lab);
|
||||
tlabel[TLABELN-1] = lab;
|
||||
|
||||
addasmlns(t, ln, tlabel, TLABELN);
|
||||
}
|
||||
|
||||
void mygoto(struct Translator* t, struct line* ln) {
|
||||
if(ln->tokenscount < 2) {
|
||||
fprintf(stderr, "Expected label; line %i", ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
checklab(t, ln);
|
||||
|
||||
// @label
|
||||
tgoto[TGOTON-2] = atlab(t, ln->tokens[1], strlen(ln->tokens[1]));
|
||||
tgoto[TGOTON-2] = mkgotolab(t, ln);
|
||||
|
||||
addasmlns(t, ln, tgoto, TGOTON);
|
||||
}
|
||||
|
||||
void ifgoto(struct Translator* t, struct line* ln) {
|
||||
if(ln->tokenscount < 2) {
|
||||
fprintf(stderr, "Expected label; line %i", ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
checklab(t, ln);
|
||||
|
||||
// @label
|
||||
tifgoto[TIFGOTON-2] = atlab(t, ln->tokens[1], strlen(ln->tokens[1]));
|
||||
tifgoto[TIFGOTON-2] = mkgotolab(t, ln);
|
||||
|
||||
addasmlns(t, ln, tifgoto, TIFGOTON);
|
||||
}
|
||||
|
||||
int pushframe(struct Translator* t, struct line* ln, char* retlab, int retlablen) {
|
||||
tcallstart[1] = atlab(t, retlab, retlablen);
|
||||
|
||||
addasmlns(t, ln, tcallstart, TCALLSTARTN);
|
||||
|
||||
for(int i = 0; i < TFRAMEVARSN; i++) {
|
||||
tcallpush[0] = tframevars[i];
|
||||
addasm(t, tcallpush, TCALLPUSHN);
|
||||
}
|
||||
|
||||
return TFRAMEVARSN + 1;
|
||||
}
|
||||
|
||||
void call(struct Translator* t, struct line* ln) {
|
||||
checkfun(t, ln);
|
||||
|
||||
// return label
|
||||
char* retlab = mkretlab(t, ln);
|
||||
int retlablen = strlen(retlab);
|
||||
|
||||
// push frame
|
||||
int framesize = pushframe(t, ln, retlab, retlablen);
|
||||
|
||||
// setting ARG
|
||||
int nargslen = strlen(ln->tokens[2]);
|
||||
checknargs(t, ln, nargslen);
|
||||
int nargs = atoi(ln->tokens[2]);
|
||||
tcallsetarg[TCALLSETARGN-4] = atn(t, nargs + framesize);
|
||||
addasm(t, tcallsetarg, TCALLSETARGN);
|
||||
|
||||
// jmp
|
||||
int jmplen = strlen(ln->tokens[1]);
|
||||
tcalljmp[TCALLJMPN-3] = atlab(t, ln->tokens[1], jmplen);
|
||||
tcalljmp[TCALLJMPN-1] = mklab(t, retlab, retlablen);
|
||||
addasm(t, tcalljmp, TCALLJMPN);
|
||||
}
|
||||
|
||||
void function(struct Translator* t, struct line* ln) {
|
||||
if(!t->returned) {
|
||||
fprintf(stderr, "Last function did not return; file %s.vm, line %i\n", t->fname, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
checkfun(t, ln);
|
||||
|
||||
t->lastfun = ln->tokens[1];
|
||||
int funlen = strlen(ln->tokens[1]);
|
||||
t->lastfunlen = funlen;
|
||||
t->funcount++;
|
||||
t->retind = 0;
|
||||
t->cmpind = 0;
|
||||
|
||||
// (funcname)
|
||||
tfunction[1] = mklab(t, ln->tokens[1], funlen);
|
||||
addasmlns(t, ln, tfunction, TFUNCTIONN);
|
||||
|
||||
// repeat nVars times:
|
||||
int nlocalslen = strlen(ln->tokens[2]);
|
||||
checknlocals(t, ln, nlocalslen);
|
||||
int nlocals = atoi(ln->tokens[2]);
|
||||
|
||||
for(int i = 0; i < nlocals; i++) {
|
||||
addasm(t, tfunctionpush, TFUNCTIONPUSHN);
|
||||
}
|
||||
}
|
||||
|
||||
void myreturn(struct Translator* t, struct line* ln) {
|
||||
addasmlns(t, ln, tstartreturn, TSTARTRETURNN);
|
||||
|
||||
for(int i = TFRAMEVARSN-1; i >= 0; i--) {
|
||||
tretpop[TRETPOPN-2] = tframevars[i];
|
||||
addasm(t, tretpop, TRETPOPN);
|
||||
}
|
||||
|
||||
addasm(t, tendreturn, TENDRETURNN);
|
||||
}
|
||||
|
||||
void switchpush(struct Translator* t, struct line* ln) {
|
||||
checkopamnt(3, ln);
|
||||
checkopamnt(t, 3, ln);
|
||||
char* seg = ln->tokens[1];
|
||||
int indlen = strlen(ln->tokens[2]);
|
||||
|
||||
|
|
@ -388,7 +519,7 @@ void switchpush(struct Translator* t, struct line* ln) {
|
|||
}
|
||||
|
||||
void switchpop(struct Translator* t, struct line* ln) {
|
||||
checkopamnt(3, ln);
|
||||
checkopamnt(t, 3, ln);
|
||||
char* seg = ln->tokens[1];
|
||||
int indlen = strlen(ln->tokens[2]);
|
||||
|
||||
|
|
@ -404,6 +535,7 @@ void switchpop(struct Translator* t, struct line* ln) {
|
|||
|
||||
void switchop(struct Translator* t, struct line* ln) {
|
||||
char* op = ln->tokens[0];
|
||||
short returned = 0;
|
||||
|
||||
if(!strcmp(op, "push"))
|
||||
switchpush(t, ln);
|
||||
|
|
@ -433,23 +565,41 @@ void switchop(struct Translator* t, struct line* ln) {
|
|||
mygoto(t, ln);
|
||||
else if(!strcmp(op, "if-goto"))
|
||||
ifgoto(t, ln);
|
||||
else if(!strcmp(op, "return")) {
|
||||
myreturn(t, ln);
|
||||
returned = 1;
|
||||
}
|
||||
else if(!strcmp(op, "function"))
|
||||
function(t, ln);
|
||||
else if(!strcmp(op, "call"))
|
||||
call(t, ln);
|
||||
else {
|
||||
fprintf(stderr, "Unrecognized operation '%s'; line %i\n", op, ln->truen);
|
||||
fprintf(stderr, "Unrecognized operation '%s'; file %s.vm, line %i\n", t->fname, op, ln->truen);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
t->returned = returned;
|
||||
}
|
||||
|
||||
void translate(struct Translator* t) {
|
||||
for(int i = 0; i < t->lns->count; i++)
|
||||
switchop(t, t->lns->lns[i]);
|
||||
|
||||
if(!t->returned) {
|
||||
fprintf(stderr, "Expected return before end of file; file %s.vm, line %i\n", t->fname, t->lns->count-1);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
struct Translator* mktranslator(struct lnarray* lns, char* fname) {
|
||||
struct Translator* t = (struct Translator*)malloc(sizeof(struct Translator));
|
||||
t->asmsize = sizeof(struct asmln*)*(lns->count * 15);
|
||||
t->asmsize = sizeof(char*)*(lns->count * 15);
|
||||
t->asmind = 0;
|
||||
t->compcount = 0;
|
||||
t->asmlns = (struct asmln**)malloc(t->asmsize);
|
||||
t->funcount = 0;
|
||||
t->retind = 0;
|
||||
t->cmpind = 0;
|
||||
t->returned = 1;
|
||||
t->asmlns = (char**)malloc(t->asmsize);
|
||||
|
||||
t->tocleanind = 0;
|
||||
t->tocleansize = sizeof(char*)*(lns->count * 5);
|
||||
|
|
|
|||
14
translator.h
14
translator.h
|
|
@ -2,13 +2,8 @@
|
|||
#define translator
|
||||
#include "parser.h"
|
||||
|
||||
struct asmln {
|
||||
char* instr;
|
||||
int truen;
|
||||
};
|
||||
|
||||
struct Translator {
|
||||
struct asmln** asmlns;
|
||||
char** asmlns;
|
||||
int asmind;
|
||||
int asmsize;
|
||||
char** toclean;
|
||||
|
|
@ -17,7 +12,12 @@ struct Translator {
|
|||
struct lnarray* lns;
|
||||
char* fname;
|
||||
int fnamelen;
|
||||
int compcount;
|
||||
char* lastfun;
|
||||
int lastfunlen;
|
||||
int funcount;
|
||||
int retind;
|
||||
int cmpind;
|
||||
short returned;
|
||||
};
|
||||
|
||||
void freetranslator(struct Translator* t);
|
||||
|
|
|
|||
|
|
@ -0,0 +1,10 @@
|
|||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include "util.h"
|
||||
|
||||
char* heapstr(const char* str, int len) {
|
||||
int sz = sizeof(char) * (len + 1);
|
||||
char* outstr = (char*)malloc(sz);
|
||||
strcpy(outstr, str);
|
||||
return outstr;
|
||||
}
|
||||
Loading…
Reference in New Issue