Add gdbsym.c object to help with running gdb-to-qemu

diff --git a/src/arch/i386/core/gdbsym.c b/src/arch/i386/core/gdbsym.c
new file mode 100644 (file)
index 0000000..51f48ed
--- /dev/null
+++ b/src/arch/i386/core/gdbsym.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <gpxe/init.h>
+#include <console.h>
+#include <realmode.h>
+
+extern char __text[];
+extern char __rodata[];
+extern char __data[];
+extern char __bss[];
+extern char __text16[];
+extern char __data16[];
+
+
+static void gdb_symbol_line ( void ) {
+       printf ( "Commands to start up gdb:\n\n" );
+       printf ( "gdb\n" );
+       printf ( "target remote localhost:1234\n" );
+       printf ( "add-symbol-file symbols %#lx", virt_to_phys ( __text ) );
+       printf ( " -s .rodata %#lx", virt_to_phys ( __rodata ) );
+       printf ( " -s .data %#lx", virt_to_phys ( __data ) );
+       printf ( " -s .bss %#lx", virt_to_phys ( __bss ) );
+       printf ( " -s .text16 %#x", ( ( rm_cs << 4 ) + (int)__text16 ) );
+       printf ( " -s .data16 %#x", ( ( rm_ds << 4 ) + (int)__data16 ) );
+       printf ( "\n" );
+       getkey();
+}
+
+INIT_FN ( INIT_GDBSYM, gdb_symbol_line, NULL, NULL );

diff --git a/src/config.h b/src/config.h
index 463d091..bacf904 100644 (file)
--- a/src/config.h
+++ b/src/config.h
@@ -143,5 +143,6 @@
 #undef BUILD_ID                /* Include a custom build ID string,
                                 * e.g "test-foo" */
 #undef NULL_TRAP               /* Attempt to catch NULL function calls */
+#define DUMP_GDBSYM            /* Dump GDB symbol table information */
 
 /* @END general.h */

diff --git a/src/core/config.c b/src/core/config.c
index 71f8777..a65d0a9 100644 (file)
--- a/src/core/config.c
+++ b/src/core/config.c
@@ -184,6 +184,9 @@ REQUIRE_OBJECT ( dhcp_cmd );
  * Drag in miscellaneous objects
  *
  */
-#ifdef NULL_TRAP
+#ifdef NULL_TRAP
 REQUIRE_OBJECT ( nulltrap );
 #endif
+#ifdef DUMP_GDBSYM
+REQUIRE_OBJECT ( gdbsym );
+#endif

diff --git a/src/include/gpxe/init.h b/src/include/gpxe/init.h
index 0a2eb0b..bd4cd97 100644 (file)
--- a/src/include/gpxe/init.h
+++ b/src/include/gpxe/init.h
@@ -36,8 +36,9 @@ struct init_fn {
 
 /* Use double digits to avoid problems with "10" < "9" on alphabetic sort */
 #define        INIT_CONSOLE    02
-#define        INIT_CPU        03
-#define        INIT_TIMERS     04
+#define        INIT_GDBSYM     03
+#define        INIT_CPU        04
+#define        INIT_TIMERS     05
 #define        INIT_LOADBUF    08
 #define        INIT_PCMCIA     09
 #define        INIT_RPC        11