disassembleをcasl2revに名前変更

[YACASL2.git] / src / casl2rev.c

diff --git a/src/casl2rev.c b/src/casl2rev.c
new file mode 100644 (file)
index 0000000..c849ecb
--- /dev/null
+++ b/src/casl2rev.c
@@ -0,0 +1,133 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define _GNU_SOURCE
+#include <getopt.h>
+#include <assert.h>
+
+#include "exec.h"
+#include "cmem.h"
+#include "cerr.h"
+#include "package.h"
+
+char *grstr(WORD word)
+{
+    assert(word <= 7);
+    char *str = malloc_chk(3 + 1, "grstr.str");
+    sprintf(str, "GR%d", word);
+    return str;
+}
+
+bool disassemble(const char *file)
+{
+    bool stat = true;
+    FILE *fp;
+    WORD i = 0, w, cmd, r, x, r1, r2, adr;
+    CMDTYPE cmdtype = 0;
+    char *cmdname;
+
+    assert(file != NULL);
+    if((fp = fopen(file, "rb")) == NULL) {
+        perror(file);
+        return false;
+    }
+
+    create_code_cmdtype();                          /* 命令のコードとタイプがキーのハッシュ表を作成 */
+
+    fprintf(stdout, "MAIN\tSTART\n");
+    for(; ;) {
+        fread(&w, sizeof(WORD), 1, fp);
+        if(feof(fp)) {
+            break;
+        }
+        cmd = w & 0xFF00;
+        cmdname = getcmdname(cmd);
+        cmdtype = getcmdtype(cmd);
+        if(cmd == 0xFF00 || (w != 0 && cmd == 0x0000)) {
+            fprintf(stdout, "\tDC\t%d\t\t\t\t; #%04X: #%04X :: ", w, i++, w);
+            print_dumpword(w, true);
+        } else if(cmdtype == R_ADR_X || cmdtype == ADR_X) {
+            fread(&adr, sizeof(WORD), 1, fp);
+            fprintf(stdout, "\t%s\t", cmdname);
+            if(cmdtype == R_ADR_X) {
+                r = (w & 0x00F0) >> 4;
+                fprintf(stdout, "%s,", grstr(r));
+            }
+            fprintf(stdout, "#%04X", adr);
+            if((x = w & 0x000F) != 0) {
+                fprintf(stdout, ",%s", grstr(x));
+            }
+            fprintf(stdout, "\t\t\t\t; #%04X: #%04X #%04X", i, w, adr);
+            i += 2;
+        } else {
+            fprintf(stdout, "\t%s", cmdname);
+            if(cmdtype == R1_R2) {
+                r1 = (w & 0x00F0) >> 4;
+                r2 = w & 0x000F;
+                fprintf(stdout, "\t%s,%s", grstr(r1), grstr(r2));
+            } else if(cmdtype == R_) {
+                r = (w & 0x00F0) >> 4;
+                fprintf(stdout, "\t%s", grstr(r));
+            }
+            fprintf(stdout, "\t\t\t\t; #%04X: #%04X", i++, w);
+        }
+        fprintf(stdout, "\n");
+    }
+    fprintf(stdout, "\tEND\n");
+    free_code_cmdtype();
+    fclose(fp);
+    return stat;
+}
+
+/**
+ * disassembleコマンドのオプション
+ */
+static struct option longopts[] = {
+    {"version", no_argument, NULL, 'v' },
+    {"help", no_argument, NULL, 'h'},
+    {0, 0, 0, 0},
+};
+
+/**
+ * @brief disassembleコマンドのメイン
+ *
+ * @return 正常終了時は0、異常終了時は1
+ *
+ * @param argc コマンドライン引数の数
+ * @param *argv[] コマンドライン引数の配列
+ */
+int main(int argc, char *argv[])
+{
+    int opt, stat = 0;
+    const char *version = PACKAGE_VERSION,  *cmdversion = "disassemble of YACASL2 version %s\n";
+    const char *usage = "Usage: %s [-vh] FILE\n";
+
+    cerr_init();
+    addcerrlist_load();
+    addcerrlist_exec();
+
+    /* オプションの処理 */
+    while((opt = getopt_long(argc, argv, "vh", longopts, NULL)) != -1) {
+        switch(opt) {
+        case 'v':
+            fprintf(stdout, cmdversion, version);
+            return 0;
+        case 'h':
+            fprintf(stdout, usage, argv[0]);
+            return 0;
+        case '?':
+            fprintf(stderr, usage, argv[0]);
+            exit(1);
+        }
+    }
+    if(argv[optind] == NULL) {
+        setcerr(211, "");    /* object file not specified */
+        fprintf(stderr, "disassemble error - %d: %s\n", cerr->num, cerr->msg);
+        exit(1);
+    }
+    disassemble(argv[optind]);                /* プログラム実行 */
+    stat = (cerr->num == 0) ? 0 : 1;
+    /* エラーの解放 */
+    freecerr();
+    return stat;
+}