X-Git-Url: http://j8takagi.net/cgi-bin/gitweb.cgi?p=YACASL2.git;a=blobdiff_plain;f=src%2Fexec.c;h=2cd6d8ae2dd0ebbe87ab47bdf474c3cea480eed6;hp=00cee8ddee097ed89b8e498d6695fcc25165125f;hb=b0f981469cdea23225ca5c3ef0ca6759d6a92b43;hpb=93cd1261d2f4247c3324a2bcb69dc4a077a4aa77

diff --git a/src/exec.c b/src/exec.c
index 00cee8d..2cd6d8a 100644
--- a/src/exec.c
+++ b/src/exec.c
@@ -1,6 +1,24 @@
 #include "casl2.h"
 #include "exec.h"
 
+/* 実行のエラー定義 */
+CERRARRAY cerr_exec[] = {
+    { 202, "SVC input - out of Input memory" },
+    { 203, "SVC output - out of COMET II memory" },
+    { 204, "Program Register (PR) - out of COMET II memory" },
+    { 205, "Stack Pointer (SP) - cannot allocate stack buffer" },
+    { 206, "Address - out of COMET II memory" },
+    { 207, "Stack Pointer (SP) - out of COMET II memory" },
+};
+
+bool addcerrlist_exec()
+{
+    return addcerrlist(ARRAYSIZE(cerr_exec), cerr_exec);
+}
+
+/* 実行モード: trace, logical, dump */
+EXECMODE execmode = {false, false, false};
+
 /* 標準入力から文字データを読込（SVC 1） */
 void svcin()
 {
@@ -8,11 +26,10 @@ void svcin()
     char *buffer = malloc(INSIZE + 1);
 
     if(fgets(buffer, INSIZE, stdin) == NULL) {
-        memory[GR[1]] = 0x0;
-        memory[GR[2]] = 0x0;
+        memory[GR[1]] = memory[GR[2]] = 0x0;
         return;
     }
-    for(i = 0; i < GR[1] && i < INSIZE; i++) {
+    for(i = 0; i < INSIZE; i++) {
         if(*(buffer + i) == '\0' || *(buffer + i) == '\n') {
             --i;
             break;
@@ -37,12 +54,9 @@ void svcout()
             setcerr(203, NULL);    /* SVC output - out of Comet II memory */
             return;
         }
-        if((w = memory[GR[1]+i]) == '\0') {
-            break;
-        }
         /* 「文字の組」の符号表に記載された文字と、改行（CR）／タブを表示 */
         /* それ以外の文字は、「.」で表す */
-        if((w >= 0x20 && w <= 0x7E) || w == 0xA || w == '\t') {
+        if(((w = memory[GR[1]+i]) >= 0x20 && w <= 0x7E) || w == 0xA || w == '\t') {
             putchar((char)w);
         } else {
             putchar('.');
@@ -139,7 +153,7 @@ void cpl(WORD val0, WORD val1)
 /* 算術演算なので、第15ビットは送り出されない */
 WORD sla(WORD val0, WORD val1)
 {
-    WORD sign, res, last;
+    WORD sign, res, last = 0x0;
     int i;
 
     FR = 0x0;
@@ -149,7 +163,7 @@ WORD sla(WORD val0, WORD val1)
         last = res & 0x4000;
         res <<= 1;
     }
-    res = sign | res;
+    res = sign | (res & 0x7FFF);
     /* OFに、レジスタから最後に送り出されたビットの値を設定 */
     if(last > 0x0) {
         FR += OF;
@@ -170,7 +184,7 @@ WORD sla(WORD val0, WORD val1)
 /* 空いたビット位置には符号と同じものが入る */
 WORD sra(WORD val0, WORD val1)
 {
-    WORD sign, res, last;
+    WORD sign, res, last = 0x0;
     int i;
 
     FR = 0x0;
@@ -202,7 +216,7 @@ WORD sra(WORD val0, WORD val1)
 /* 論理左シフト。フラグを設定して値を返す */
 WORD sll(WORD val0, WORD val1)
 {
-    WORD res = val0, last;
+    WORD res = val0, last = 0x0;
     int i;
 
     FR = 0x0;
@@ -228,7 +242,7 @@ WORD sll(WORD val0, WORD val1)
 /* 論理右シフト。フラグを設定して値を返す */
 WORD srl(WORD val0, WORD val1)
 {
-    WORD res = val0, last;
+    WORD res = val0, last = 0x0;
     int i;
 
     FR = 0x0;
@@ -251,29 +265,16 @@ WORD srl(WORD val0, WORD val1)
     return res;
 }
 
-/* COMET II仮想マシンのリセット */
-void reset()
-{
-    int i;
-    for(i = 0; i < REGSIZE; i++) {
-        GR[i] = 0x0;
-    }
-    SP = PR = FR = 0x0;
-    memory = malloc(memsize);
-    for(i = 0; i < memsize; i++) {
-        memory[i] = 0x0;
-    }
-}
-
-/* コードの実行 */
+/* 仮想マシンCOMET IIでの実行 */
 void exec()
 {
     WORD op, r_r1, x_r2, val;
     CMDTYPE cmdtype;
-    char *errpr = malloc(8);
+    char *errpr = malloc(CERRSTRSIZE + 1);
     clock_t clock_begin, clock_end;
 
-    if((&execmode)->trace) {
+    addcerrlist_exec();
+    if(execmode.trace) {
         fprintf(stdout, "\nExecuting machine codes\n");
     }
     /* フラグレジスタの初期値設定 */
@@ -301,7 +302,9 @@ void exec()
             sprintf(errpr, "PR:#%04X", PR);
             setcerr(205, errpr);    /* Stack Pointer (SP) - cannot allocate stack buffer */
         }
+        /* 命令の取り出し */
         op = memory[PR] & 0xFF00;
+        /* 命令の解読 */
         cmdtype = getcmdtype(op);
         r_r1 = (memory[PR] >> 4) & 0xF;
         x_r2 = memory[PR] & 0xF;
@@ -309,24 +312,28 @@ void exec()
         if(cerrno > 0) {
             goto execerr;
         }
-        if((&execmode)->trace){
+        /* traceオプション指定時、レジスタを出力 */
+        if(execmode.trace){
             fprintf(stdout, "#%04X: Register::::\n", PR);
             dspregister();
         }
-        if((&execmode)->dump){
+        /* dumpオプション指定時、メモリを出力 */
+        if(execmode.dump){
             fprintf(stdout, "#%04X: Memory::::\n", PR);
             dumpmemory();
         }
-        if((&execmode)->dump || (&execmode)->trace) {
+        /* どちらかのオプション指定時、改行を出力 */
+        if(execmode.dump || execmode.trace) {
             fprintf(stdout, "\n");
         }
         PR++;
-        /* 処理対象の値を取得 */
+        /* オペランドの取り出し */
         if(cmdtype == R1_R2) {
             assert(x_r2 < REGSIZE);
             val = GR[x_r2];
         }
         else if(cmdtype ==  R_ADR_X || cmdtype == R_ADR_X_ || cmdtype == ADR_X) {
+            assert(x_r2 < REGSIZE);
             /* 実効アドレス（値または値が示す番地）を取得  */
             val = memory[PR++];
             /* 指標アドレスを加算  */
@@ -347,10 +354,10 @@ void exec()
         if(op >= 0x1000 && op <= 0x4FFF) {
             op &= 0xFB00;
         }
-        /* 命令ごとの処理を実行 */
+        /* 命令の実行 */
         switch(op)
         {
-        case 0x0:  /* NOP */
+        case 0x0:       /* NOP */
             break;
         case 0x1000:    /* LD */
             setfr(GR[r_r1] = val);
@@ -361,87 +368,87 @@ void exec()
         case 0x1200:    /* LAD */
             GR[r_r1] = val;
             break;
-        case 0x2000:  /* ADDA */
+        case 0x2000:    /* ADDA */
             GR[r_r1] = adda(GR[r_r1], val);
             break;
-        case 0x2100:  /* SUBA */
+        case 0x2100:    /* SUBA */
             GR[r_r1] = suba(GR[r_r1], val);
             break;
-        case 0x2200:  /* ADDL */
+        case 0x2200:    /* ADDL */
             GR[r_r1] = addl(GR[r_r1], val);
             break;
-        case 0x2300:  /* SUBL */
+        case 0x2300:    /* SUBL */
             GR[r_r1] = subl(GR[r_r1], val);
             break;
-        case 0x3000:  /* AND */
+        case 0x3000:    /* AND */
             setfr(GR[r_r1] &= val);
             break;
-        case 0x3100:  /* OR */
+        case 0x3100:    /* OR */
             setfr(GR[r_r1] |= val);
             break;
-        case 0x3200:  /* XOR */
+        case 0x3200:    /* XOR */
             setfr(GR[r_r1] ^= val);
             break;
-        case 0x4000:  /* CPA */
+        case 0x4000:    /* CPA */
             cpa(GR[r_r1], val);
             break;
-        case 0x4100:  /* CPL */
+        case 0x4100:    /* CPL */
             cpl(GR[r_r1], val);
             break;
-        case 0x5000:  /* SLA */
+        case 0x5000:    /* SLA */
             GR[r_r1] = sla(GR[r_r1], val);
             break;
-        case 0x5100:  /* SRA */
+        case 0x5100:    /* SRA */
             GR[r_r1] = sra(GR[r_r1], val);
             break;
-        case 0x5200:  /* SLL */
+        case 0x5200:    /* SLL */
             GR[r_r1] = sll(GR[r_r1], val);
             break;
-        case 0x5300:  /* SRL */
+        case 0x5300:    /* SRL */
             GR[r_r1] = srl(GR[r_r1], val);
             break;
-        case 0x6100:  /* JMI */
+        case 0x6100:    /* JMI */
             if((FR & SF) > 0) {
                 PR = val;
             }
             break;
-        case 0x6200:  /* JNZ */
+        case 0x6200:    /* JNZ */
             if((FR & ZF) == 0) {
                 PR = val;
             }
             break;
-        case 0x6300:  /* JZE */
+        case 0x6300:    /* JZE */
             if((FR & ZF) > 0) {
                 PR = val;
             }
             break;
-        case 0x6400:  /* JUMP */
+        case 0x6400:    /* JUMP */
             PR = val;
             break;
-        case 0x6500:  /* JPL */
+        case 0x6500:    /* JPL */
             if((FR & (SF | ZF)) == 0) {
                 PR = val;
             }
             break;
-        case 0x6600:  /* JOV */
+        case 0x6600:    /* JOV */
             if((FR & OF) > 0) {
                 PR = val;
             }
             break;
-        case 0x7000:  /* PUSH */
+        case 0x7000:    /* PUSH */
             assert(SP > endptr && SP <= memsize);
             memory[--SP] = val;
             break;
-        case 0x7100:  /* POP */
+        case 0x7100:    /* POP */
             assert(SP > endptr && SP <= memsize);
             GR[r_r1] = memory[SP++];
             break;
-        case 0x8000:  /* CALL */
+        case 0x8000:    /* CALL */
             assert(SP > endptr && SP <= memsize);
             memory[--SP] = PR;
             PR = val;
             break;
-        case 0x8100:  /* RET */
+        case 0x8100:    /* RET */
             assert(SP > endptr && SP <= memsize);
             if(SP == memsize) {
                 return;
@@ -449,7 +456,7 @@ void exec()
                 PR = memory[SP++];
                 break;
             }
-        case 0xf000:  /* SVC */
+        case 0xF000:    /* SVC */
             switch(val)
             {
             case 0x0: /* EXIT */
@@ -467,7 +474,9 @@ void exec()
         do {
             clock_end = clock();
         } while(clock_end - clock_begin < CLOCKS_PER_SEC / clocks);
-/*        printf("PR:%04X; time: %f\n", PR, (double)((clock_end - clock_begin) * CLOCKS_PER_SEC)); */
+        #if 0
+        printf("PR:%04X; time: %f\n", PR, (double)((clock_end - clock_begin) * CLOCKS_PER_SEC));
+        #endif
     }
 execerr:
     fprintf(stderr, "Execute error - %d: %s\n", cerrno, cerrmsg);