NASM 0.91

1 files changed, 156 insertions, 0 deletions

diff --git a/rdoff/rdfdump.c b/rdoff/rdfdump.c
new file mode 100644
index 0000000..4d4f4df
--- /dev/null
+++ b/rdoff/rdfdump.c
@@ -0,0 +1,156 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+FILE *infile;
+
+long translatelong(long in) {		/* translate from little endian to
+					   local representation */
+  long r;
+  unsigned char *i;
+
+  i = (unsigned char *)&in;
+  r = i[3];
+  r = (r << 8) + i[2];
+  r = (r << 8) + i[1];
+  r = (r << 8) + *i;
+
+  return r;
+}
+
+int translateshort(short in) {
+  int r;
+  unsigned char *i;
+
+  i = (unsigned char *)&in;
+  r = (i[1] << 8) + *i;
+
+  return r;
+}
+void print_header(long length) {
+  unsigned char buf[129],t,s,l;
+  long o;
+  short rs;
+
+  while (length > 0) {
+    fread(&t,1,1,infile);
+    switch(t) {
+    case 1:		/* relocation record */
+      fread(&s,1,1,infile);
+      fread(&o,4,1,infile);
+      fread(&l,1,1,infile);
+      fread(&rs,2,1,infile);
+      printf("  relocation: location (%04x:%08lx), length %d, "
+	     "referred seg %04x\n",(int)s,translatelong(o),(int)l,
+	     translateshort(rs));
+      length -= 9;
+      break;
+    case 2:             /* import record */
+      fread(&rs,2,1,infile);
+      l = 0;
+      do {
+	fread(&buf[l],1,1,infile);
+      } while (buf[l++]);
+      printf("  import: segment %04x = %s\n",translateshort(rs),buf);
+      length -= l + 3;
+      break;
+    case 3:             /* export record */
+      fread(&s,1,1,infile);
+      fread(&o,4,1,infile);
+      l = 0;
+      do {
+	fread(&buf[l],1,1,infile);
+      } while (buf[l++]);
+      printf("  export: (%04x:%08lx) = %s\n",(int)s,translatelong(o),buf);
+      length -= l + 6;
+      break;
+    case 4:		/* DLL record */
+      l = 0;
+      do {
+	fread(&buf[l],1,1,infile);
+      } while (buf[l++]);
+      printf("  dll: %s\n",buf);
+      length -= l + 1;
+      break;
+    case 5:		/* BSS reservation */
+      fread(&l,4,1,infile);
+      printf("  bss reservation: %08lx bytes\n",translatelong(l));
+      length -= 5;
+      break;
+    default:
+      printf("  unrecognised record (type %d)\n",(int)t);
+      length --;
+    }
+  }
+}
+
+int main(int argc,char **argv) {
+  char id[7];
+  long l;
+  int verbose = 0;
+
+  puts("RDOFF Dump utility v1.1 (C) Copyright 1996 Julian R Hall");
+
+  if (argc < 2) {
+    fputs("Usage: rdfdump [-v] <filename>\n",stderr);
+    exit(1);
+  }
+
+  if (! strcmp (argv[1], "-v") )
+  {
+    verbose = 1;
+    if (argc < 3)
+    {
+      fputs("required parameter missing\n",stderr);
+      exit(1);
+    }
+    argv++;
+  }
+
+  infile = fopen(argv[1],"rb");
+  if (! infile) {
+    fprintf(stderr,"rdfdump: Could not open %s",argv[1]);
+    exit(1);
+  }
+
+  fread(id,6,1,infile);
+  if (strncmp(id,"RDOFF",5)) {
+    fputs("rdfdump: File does not contain valid RDOFF header\n",stderr);
+    exit(1);
+  }
+
+  printf("File %s: RDOFF version %c\n\n",argv[1],id[5]);
+  if (id[5] < '1' || id[5] > '1') {
+    fprintf(stderr,"rdfdump: unknown RDOFF version '%c'\n",id[5]);
+    exit(1);
+  }
+
+  fread(&l,4,1,infile);
+  l = translatelong(l);
+  printf("Header (%ld bytes):\n",l);
+  print_header(l);
+
+  fread(&l,4,1,infile);
+  l = translatelong(l);
+  printf("\nText segment length = %ld bytes\n",l);
+  while(l--) {
+    fread(id,1,1,infile);
+    if (verbose) printf("  %02x",(int) (unsigned char)id[0]);
+  }
+  if (verbose) printf("\n\n");
+
+  fread(&l,4,1,infile);
+  l = translatelong(l);
+  printf("Data segment length = %ld bytes\n",l);
+
+  if (verbose)
+  {
+    while (l--) {
+      fread(id,1,1,infile);
+      printf("  %02x",(int) (unsigned char) id[0]);
+    }
+    printf("\n");
+  }
+  fclose(infile);
+  return 0;
+}