emul: don't embed forth.bin in emul binaries

Read the contents of forth.bin at runtime. This allows us to get
rid of the bin2c tooling.

emul/Makefile

@@ -1,6 +1,5 @@
 TARGETS = forth stage blkfs
 OBJS = emul.o libz80/libz80.o
-BIN2C = ../tools/bin2c
 BLKPACK = ../tools/blkpack
 BLKUNPACK = ../tools/blkunpack
 
@@ -10,22 +9,17 @@ all: $(TARGETS)
 $(BLKPACK):
 	$(MAKE) -C ../tools
 
-.PHONY: $(BIN2C) $(BLKUNPACK)
+.PHONY: $(BLKUNPACK)
-$(BIN2C): $(BLKPACK)
 $(BLKUNPACK): $(BLKPACK)
 
-# not dependent on forth.bin to avoid circular deps.
+stage: stage.c $(OBJS)
-forth-bin.h: $(BIN2C)
+	$(CC) stage.c -DFBIN_PATH=\"`pwd`/forth.bin\" -DBLKFS_PATH=\"`pwd`/blkfs\" $(OBJS) -o $@
-	$(BIN2C) KERNEL < forth.bin > $@
-
-stage: stage.c $(OBJS) forth-bin.h
-	$(CC) stage.c -DBLKFS_PATH=\"`pwd`/blkfs\" $(OBJS) -o $@
 
 blkfs: $(BLKPACK)
 	$(BLKPACK) ../blk > $@
 
-forth: forth.c $(OBJS) forth-bin.h
+forth: forth.c $(OBJS)
-	$(CC) forth.c -DBLKFS_PATH=\"`pwd`/blkfs\" $(OBJS) -lncurses -o $@
+	$(CC) forth.c -DFBIN_PATH=\"`pwd`/forth.bin\" -DBLKFS_PATH=\"`pwd`/blkfs\" $(OBJS) -lncurses -o $@
 
 libz80/libz80.o: libz80/z80.c
 	$(MAKE) -C libz80/codegen opcodes
@@ -37,7 +31,7 @@ emul.o: emul.c
 
 .PHONY: updatebootstrap
 updatebootstrap: stage xcomp.fs pack
-	./stage < xcomp.fs > forth.bin
+	./stage < xcomp.fs | tee forth.bin > /dev/null
 
 .PHONY: pack
 pack:

emul/forth.c

@@ -4,7 +4,12 @@
 #include <curses.h>
 #include <termios.h>
 #include "emul.h"
-#include "forth-bin.h"
+#ifndef FBIN_PATH
+#error FBIN_PATH needed
+#endif
+#ifndef BLKFS_PATH
+#error BLKFS_PATH needed
+#endif
 
 // in sync with glue.asm
 #define RAMSTART 0x900
@@ -56,41 +61,32 @@ static void iowr_blk(uint8_t val)
 {
     blkid <<= 8;
     blkid |= val;
-    if (blkfp != NULL) {
     fseek(blkfp, blkid*1024, SEEK_SET);
-    }
 }
 
 static uint8_t iord_blkdata()
 {
     uint8_t res = 0;
-    if (blkfp != NULL) {
     int c = getc(blkfp);
     if (c != EOF) {
         res = c;
     }
-    }
     return res;
 }
 
 static void iowr_blkdata(uint8_t val)
 {
-    if (blkfp != NULL) {
     putc(val, blkfp);
-    }
 }
 
 int run()
 {
-#ifdef BLKFS_PATH
     fprintf(stderr, "Using blkfs %s\n", BLKFS_PATH);
     blkfp = fopen(BLKFS_PATH, "r+");
     if (!blkfp) {
         fprintf(stderr, "Can't open\n");
+        return 1;
     }
-#else
-    blkfp = NULL;
-#endif
     Machine *m = emul_init();
     m->ramstart = RAMSTART;
     m->iord[STDIO_PORT] = iord_stdio;
@@ -100,10 +96,18 @@ int run()
     m->iord[BLKDATA_PORT] = iord_blkdata;
     m->iowr[BLKDATA_PORT] = iowr_blkdata;
     // initialize memory
-    for (int i=0; i<sizeof(KERNEL); i++) {
+    FILE *bfp = fopen(FBIN_PATH, "r");
-        m->mem[i] = KERNEL[i];
+    if (!bfp) {
+        fprintf(stderr, "Can't open forth.bin\n");
+        return 1;
     }
-
+    int i = 0;
+    int c = getc(bfp);
+    while (c != EOF) {
+        m->mem[i++] = c;
+        c = getc(bfp);
+    }
+    fclose(bfp);
     // Run!
     while (emul_step());
 

emul/stage.c

@@ -2,8 +2,9 @@
 #include <stdio.h>
 #include <unistd.h>
 #include "emul.h"
-#include "forth-bin.h"
+#ifndef FBIN_PATH
-
+#error FBIN_PATH needed
+#endif
 #ifndef BLKFS_PATH
 #error BLKFS_PATH needed
 #endif
@@ -92,10 +93,18 @@ int main(int argc, char *argv[])
     m->iowr[BLK_PORT] = iowr_blk;
     m->iord[BLKDATA_PORT] = iord_blkdata;
     // initialize memory
-    for (int i=0; i<sizeof(KERNEL); i++) {
+    FILE *bfp = fopen(FBIN_PATH, "r");
-        m->mem[i] = KERNEL[i];
+    if (!bfp) {
+        fprintf(stderr, "Can't open forth.bin\n");
+        return 1;
     }
-
+    int i = 0;
+    int c = getc(bfp);
+    while (c != EOF) {
+        m->mem[i++] = c;
+        c = getc(bfp);
+    }
+    fclose(bfp);
     // Run!
     running = 1;
 

tools/Makefile

@@ -2,13 +2,12 @@ MEMDUMP_TGT = memdump
 UPLOAD_TGT = upload
 TTYSAFE_TGT = ttysafe
 PINGPONG_TGT = pingpong
-BIN2C_TGT = bin2c
 EXEC_TGT = exec
 BLKPACK_TGT = blkpack
 BLKUNPACK_TGT = blkunpack
 BLKUP_TGT = blkup
 TARGETS = $(MEMDUMP_TGT) $(UPLOAD_TGT) \
-	$(TTYSAFE_TGT) $(PINGPONG_TGT) $(BIN2C_TGT) $(EXEC_TGT) $(BLKPACK_TGT) \
+	$(TTYSAFE_TGT) $(PINGPONG_TGT) $(EXEC_TGT) $(BLKPACK_TGT) \
     $(BLKUNPACK_TGT) $(BLKUP_TGT)
 OBJS = common.o
 
@@ -22,7 +21,6 @@ $(MEMDUMP_TGT): $(MEMDUMP_TGT).c
 $(UPLOAD_TGT): $(UPLOAD_TGT).c
 $(TTYSAFE_TGT): $(TTYSAFE_TGT).c
 $(PINGPONG_TGT): $(PINGPONG_TGT).c
-$(BIN2C_TGT): $(BIN2C_TGT).c
 $(EXEC_TGT): $(EXEC_TGT).c
 $(BLKPACK_TGT): $(BLKPACK_TGT).c
 $(BLKUNPACK_TGT): $(BLKUNPACK_TGT).c

tools/bin2c.c

@@ -1,50 +0,0 @@
-/*
- * Copyright (c) 2020 Byron Grobe
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-
-#define BUFSZ 32
-
-static const char intro[] = "static const unsigned char %s[] = {\n    ";
-
-int main(int argc, char **argv) {
-  int n;
-  int col = 0;
-  uint8_t buf[BUFSZ];
-
-  if (argc < 2) {
-    fprintf(stderr, "Specify a name for the data structure...\n");
-    return 1;
-  }
-
-  printf(intro, argv[1]);
-
-  while(!feof(stdin)) {
-    n = fread(buf, 1, BUFSZ, stdin);
-    for(int i = 0; i < n; ++i) {
-      if (col+4 >= 76) {
-          printf("\n    ");
-          col = 0;
-        }
-      printf("0x%.2x, ", buf[i]);
-      col += 6;
-    }
-  }
-
-  printf("};\n");
-}