とりあえず 80 文字制限はちょっとねーってことで 256 文字にしてみた。
brickos のバージョンは 0.9.0 です。

Index: srecload.c
===================================================================
--- srecload.c	(revision 19)
+++ srecload.c	(working copy)
@@ -37,7 +37,7 @@
  *  kekoa@graphics.stanford.edu
  *  10/3/98
  */
- 
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -50,20 +50,20 @@
 #define IMG_HIGHEST   0xffff
 #define IMG_MAXSIZE   0x10000
 
+static char buf[256];
 
 //! load symbols from symbolsrec file
 /*! \return current line in file
 
-    the symbol section is enclosed in $$ 
+    the symbol section is enclosed in $$
     symbol line format is SYMBOL $ADDR
 */
 static int symbols_load(image_t *img,FILE *file) {
-  char buf[256];
   int doubledollar=0;
   unsigned short text=0,
                  text_end=0,
-      	      	 data=0,
-      	      	 data_end=0,
+                 data=0,
+                 data_end=0,
                  bss=0,
                  bss_end=0,
                  ctors=0,
@@ -72,10 +72,10 @@
                  dtors_end=0,
                  _main=0;
   int line=0;
-    
+
   // read in symbols
   //
-  while(doubledollar<2 && fgets(buf, 80, file)) {
+  while(doubledollar<2 && fgets(buf, sizeof(buf)-1, file)) {
     int i;
     line++;
 
@@ -84,8 +84,8 @@
     for(i=0; buf[i] && isspace(buf[i]); i++)
       ;
     if (!buf[i])
-	continue;
-    
+        continue;
+
     if(buf[i]=='$' && buf[i+1]=='$') {
       // delimiter?
       //
@@ -95,62 +95,62 @@
       //
       char *symbol;
       unsigned short address;
-      
+
       if(doubledollar<1) {
-	fprintf(stderr,"malformed symbolsrec file at line %d\n",line);
-	exit(-1);
+        fprintf(stderr,"malformed symbolsrec file at line %d\n",line);
+        exit(-1);
       }
-      
+
       // read symbol
       //
       symbol=buf+i;
       while(buf[i] && buf[i]!=' ')
-	i++;
+        i++;
       if(buf[i]!=' ' || buf[i+1]!='$') {
-	fprintf(stderr,"malformed symbolsrec file at line %d\n",line);
-	exit(-1);
+        fprintf(stderr,"malformed symbolsrec file at line %d\n",line);
+        exit(-1);
       }
       buf[i]=0;
-      
+
       address=(unsigned short) strtoul(buf+i+2,NULL,16);
-  
+
       // retain relevant offsets
       //
       if(!strcmp(symbol,"___text"))
-	text=address; 
+        text=address;
       else if(!strcmp(symbol,"___text_end"))
-	text_end=address; 
+        text_end=address;
       else if(!strcmp(symbol,"___data"))
-	data=address; 
+        data=address;
       else if(!strcmp(symbol,"___data_end"))
-	data_end=address; 
+        data_end=address;
       else if(!strcmp(symbol,"___bss"))
-	bss=address; 
+        bss=address;
       else if(!strcmp(symbol,"___bss_end"))
-	bss_end=address; 
+        bss_end=address;
       else if(!strcmp(symbol,"___ctors"))
-	ctors=address; 
+        ctors=address;
       else if(!strcmp(symbol,"___ctors_end"))
-	ctors_end=address; 
+        ctors_end=address;
       else if(!strcmp(symbol,"___dtors"))
-	dtors=address; 
+        dtors=address;
       else if(!strcmp(symbol,"___dtors_end"))
-	dtors_end=address; 
+        dtors_end=address;
       else if(!strcmp(symbol,"_main"))
-	_main=address; 
-    }   
+        _main=address;
+    }
   }
 
   // save general file information
   //
-  img->base     =text;  
+  img->base     =text;
   //  added ctor/dtor sections for C++.  They reside between text and data
   //   so they've been added to text for simplicity.  -stephen 14Jan01
   img->text_size=(text_end - text) + (ctors_end - ctors) + (dtors_end - dtors);
   img->data_size=data_end - data;
   img->bss_size = bss_end - bss;
   img->offset   =_main-text;
-  
+
   return line;
 }
 
@@ -158,7 +158,6 @@
 void image_load(image_t *img,const char *filename)
 {
   FILE *file;
-  char buf[256];
   srec_t srec;
   int line;
   unsigned short size,start=0;
@@ -172,15 +171,15 @@
   //
   line=symbols_load(img,file);
   size=img->text_size+img->data_size;
-  
+
   if((img->text=calloc(size,1))== NULL) {
     fprintf(stderr, "out of memory\n");
     exit(1);
   }
-        
-  // Build an image of the srecord data 
+
+  // Build an image of the srecord data
   //
-  while (fgets(buf, 80, file)) {
+  while (fgets(buf, sizeof(buf)-1, file)) {
     int i,error;
     line++;
 
@@ -189,34 +188,34 @@
     for(i=0; buf[i] && isspace(buf[i]); i++)
       ;
     if (!buf[i])
-	continue;
+        continue;
 
     // decode line
     //
     if ((error = srec_decode(&srec, buf)) < 0) {
-	char *errstr = NULL;
-	switch (error) {
-	  case S_NULL:         errstr = "null string error"; break;
-	  case S_INVALID_HDR:  errstr = "invalid header";    break;
-	  case S_INVALID_CHAR: errstr = "invalid character"; break;
-	  case S_INVALID_TYPE: errstr = "invalid type";      break;
-	  case S_TOO_SHORT:    errstr = "line to short";     break;
-	  case S_TOO_LONG:     errstr = "line too line";     break;
-	  case S_INVALID_CKSUM:       /* ignored */          break;
-	  default:             errstr = "unknown error";     break;
-	}
-	if (errstr) {
-	  fprintf(stderr, "%s: %s on line %d\n", filename, errstr, line);
-	  exit(1);
-	}
+        char *errstr = NULL;
+        switch (error) {
+          case S_NULL:         errstr = "null string error"; break;
+          case S_INVALID_HDR:  errstr = "invalid header";    break;
+          case S_INVALID_CHAR: errstr = "invalid character"; break;
+          case S_INVALID_TYPE: errstr = "invalid type";      break;
+          case S_TOO_SHORT:    errstr = "line to short";     break;
+          case S_TOO_LONG:     errstr = "line too line";     break;
+          case S_INVALID_CKSUM:       /* ignored */          break;
+          default:             errstr = "unknown error";     break;
+        }
+        if (errstr) {
+          fprintf(stderr, "%s: %s on line %d\n", filename, errstr, line);
+          exit(1);
+        }
     }
-    
+
     // handle lines
     //
     if (srec.type == 1) {
       if (srec.addr < img->base || srec.addr + srec.count > img->base + size) {
-	fprintf(stderr, "%s: address [0x%4.4lX, 0x%4.4lX] out of bounds [0x%4.4X-0x%4.4X] on line %d\n",filename, srec.addr, (srec.addr + srec.count), img->base, (img->base + size), line);
-	exit(1);
+        fprintf(stderr, "%s: address [0x%4.4lX, 0x%4.4lX] out of bounds [0x%4.4X-0x%4.4X] on line %d\n",filename, srec.addr, (srec.addr + srec.count), img->base, (img->base + size), line);
+        exit(1);
       }
 
       memcpy(img->text + srec.addr - img->base, srec.data, srec.count);