Add ktrace option so that individual flat files will produce the useful

kernel trace for debugging.

Update to latest flat.h.

diff --git a/elf2flt.c b/elf2flt.c
index dce6506..beabe57 100644 (file)
--- a/elf2flt.c
+++ b/elf2flt.c
@@ -6,7 +6,7 @@
  * ELF format file handling. Extended relocation support for all of
  * text and data.
  *
- * (c) 2003, H8 support <davidm@snapgear.com>
+ * (c) 2003, H8 support, ktrace <davidm@snapgear.com>
  * (c) 2001-2003, arm/arm-pic/arm-big-endian support <davidm@snapgear.com>
  * (c) 2001, v850 changes, Mile Bader <miles@lsi.nec.co.jp>
  * (c) 2003, SuperH support, Paul Mundt <lethal@linux-sh.org>
@@ -95,6 +95,7 @@
 int verbose = 0;      /* extra output when running */
 int pic_with_got = 0; /* do elf/got processing with PIC code */
 int load_to_ram = 0;  /* instruct loader to allocate everything into RAM */
+int ktrace = 0;       /* instruct loader output kernel trace on load */
 int compress = 0;     /* 1 = compress everything, 2 = compress data only */
 int use_resolved = 0; /* If true, get the value of symbol references from */
                      /* the program contents, not from the relocation table. */
@@ -1050,6 +1051,7 @@ static void usage(void)
        "[-o <output-file>] <elf-file>\n\n"
        "       -v              : verbose operation\n"
        "       -r              : force load to RAM\n"
+       "       -k              : enable kernel trace on load (for debug)\n"
        "       -z              : compress code/data/relocs\n"
        "       -d              : compress data/relocs\n"
        "       -a              : use existing symbol references\n"
@@ -1124,7 +1126,7 @@ int main(int argc, char *argv[])
   
   stack = 4096;
 
-  while ((opt = getopt(argc, argv, "avzdrp:s:o:R:")) != -1) {
+  while ((opt = getopt(argc, argv, "avzdrkp:s:o:R:")) != -1) {
     switch (opt) {
     case 'v':
       verbose++;
@@ -1132,6 +1134,9 @@ int main(int argc, char *argv[])
     case 'r':
       load_to_ram++;
       break;
+    case 'k':
+      ktrace++;
+      break;
     case 'z':
       compress = 1;
       break;
@@ -1333,6 +1338,7 @@ int main(int argc, char *argv[])
   hdr.reloc_count = htonl(reloc_len);
   hdr.flags       = htonl(0
          | (load_to_ram ? FLAT_FLAG_RAM : 0)
+         | (ktrace ? FLAT_FLAG_KTRACE : 0)
          | (pic_with_got ? FLAT_FLAG_GOTPIC : 0)
          | (compress ? (compress == 2 ? FLAT_FLAG_GZDATA : FLAT_FLAG_GZIP) : 0)
          );

diff --git a/flat.h b/flat.h
index 28fa5bd..ec56852 100644 (file)
--- a/flat.h
+++ b/flat.h
@@ -1,14 +1,27 @@
-
-/* Copyright (C) 1998  Kenneth Albanowski <kjahds@kjahds.com>
- *                     The Silver Hammer Group, Ltd.
+/*
+ * Copyright (C) 2002-2003  David McCullough <davidm@snapgear.com>
+ * Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
+ *                          The Silver Hammer Group, Ltd.
  *
+ * This file provides the definitions and structures needed to
+ * support uClinux flat-format executables.
  */
 
 #ifndef _LINUX_FLAT_H
 #define _LINUX_FLAT_H
 
+#ifdef __KERNEL__
+#include <asm/flat.h>
+#endif
+
 #define        FLAT_VERSION                    0x00000004L
 
+#ifdef CONFIG_BINFMT_SHARED_FLAT
+#define        MAX_SHARED_LIBS                 (4)
+#else
+#define        MAX_SHARED_LIBS                 (1)
+#endif
+
 /*
  * To make everything easier to port and manage cross platform
  * development,  all fields are in network byte order.
@@ -41,6 +54,7 @@ struct flat_hdr {
 #define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */
 #define FLAT_FLAG_GZIP   0x0004 /* all but the header is compressed */
 #define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */
+#define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */
 
 
 #ifdef __KERNEL__ /* so systems without linux headers can compile the apps */
@@ -81,6 +95,6 @@ typedef union {
        } reloc;
 } flat_v2_reloc_t;
 
-#endif
+#endif /* __KERNEL__ */
 
 #endif /* _LINUX_FLAT_H */

diff --git a/flthdr.c b/flthdr.c
index 12db066..12f7dcd 100644 (file)
--- a/flthdr.c
+++ b/flthdr.c
@@ -2,7 +2,7 @@
 /*
  *     A simple program to manipulate flat files
  *
- *     Copyright (C) 2001,2002 SnapGear Inc, davidm@snapgear.com
+ *     Copyright (C) 2001-2003 SnapGear Inc, davidm@snapgear.com
  *     Copyright (C) 2001 Lineo, davidm@lineo.com
  */
 /****************************************************************************/
@@ -22,7 +22,7 @@
 char *program_name;
 
 static char cmd[1024];
-static int print = 0, compress = 0, ramload = 0, stacksize = 0;
+static int print = 0, compress = 0, ramload = 0, stacksize = 0, ktrace = 0;
 static int short_format = 0;
 
 /****************************************************************************/
@@ -99,6 +99,11 @@ process_file(char *ifile, char *ofile)
        else if (ramload < 0)
                new_flags &= ~FLAT_FLAG_RAM;
        
+       if (ktrace > 0)
+               new_flags |= FLAT_FLAG_KTRACE;
+       else if (ktrace < 0)
+               new_flags &= ~FLAT_FLAG_KTRACE;
+       
        if (stacksize)
                new_stack = stacksize;
 
@@ -127,6 +132,8 @@ process_file(char *ifile, char *ofile)
                                printf("Gzip-Compressed ");
                        if (old_flags & FLAT_FLAG_GZDATA)
                                printf("Gzip-Data-Compressed ");
+                       if (old_flags & FLAT_FLAG_KTRACE)
+                               printf("Kernel-Traced-Load ");
                        printf(")\n");
                }
        } else if (print > 1) {
@@ -139,6 +146,7 @@ process_file(char *ifile, char *ofile)
                        first = 0;
                }
                *tfile = '\0';
+               strcat(tfile, (old_flags & FLAT_FLAG_KTRACE) ? "k" : "");
                strcat(tfile, (old_flags & FLAT_FLAG_RAM) ? "r" : "");
                strcat(tfile, (old_flags & FLAT_FLAG_GOTPIC) ? "p" : "");
                strcat(tfile, (old_flags & FLAT_FLAG_GZIP) ? "z" :
@@ -287,6 +295,8 @@ usage(char *s)
        fprintf(stderr, "       -Z      : un-compressed flat file\n");
        fprintf(stderr, "       -r      : ram load\n");
        fprintf(stderr, "       -R      : do not RAM load\n");
+       fprintf(stderr, "       -k      : kernel traced load (for debug)\n");
+       fprintf(stderr, "       -K      : normal non-kernel traced load\n");
        fprintf(stderr, "       -s size : stack size\n");
        fprintf(stderr, "       -o file : output-file\n"
                        "                 (default is to modify input file)\n");
@@ -303,7 +313,7 @@ main(int argc, char *argv[])
 
        program_name = argv[0];
 
-       while ((c = getopt(argc, argv, "pdzZrRs:o:")) != EOF) {
+       while ((c = getopt(argc, argv, "pdzZrRkKs:o:")) != EOF) {
                switch (c) {
                case 'p': print = 1;                break;
                case 'z': compress = 1;             break;
@@ -311,6 +321,8 @@ main(int argc, char *argv[])
                case 'Z': compress = -1;            break;
                case 'r': ramload = 1;              break;
                case 'R': ramload = -1;             break;
+               case 'k': ktrace = 1;               break;
+               case 'K': ktrace = -1;              break;
                case 's': stacksize = atoi(optarg); break;
                case 'o': ofile = optarg;           break;
                default: