New dynamic module and symbol handling code.

1 files changed, 46 insertions, 7 deletions

diff --git a/runtime/sym.h b/runtime/sym.h
index 6ed08b06..4bbbbbb5 100644
--- a/runtime/sym.h
+++ b/runtime/sym.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005 Red Hat Inc.
+ * Copyright (C) 2005, 2006 Red Hat Inc.
  *
  * This file is part of systemtap, and is free software.  You can
  * redistribute it and/or modify it under the terms of the GNU General
@@ -10,16 +10,55 @@
 #ifndef _STAP_SYMBOLS_H_
 #define _STAP_SYMBOLS_H_
 
+#define STP_MODULE_NAME_LEN 64
 
-/* A symbol table defined by the translator. */
-struct stap_symbol {
+struct _stp_symbol {
   unsigned long addr;
   const char *symbol;
-  const char *modname; 
 };
 
-extern struct stap_symbol stap_symbols [];
-extern unsigned stap_num_symbols;
+struct _stp_module {
+  /* the module name, or "" for kernel */
+  char name[STP_MODULE_NAME_LEN];
 
+  /* A pointer to the struct module. Note that we cannot */
+  /* trust this because as of 2.6.19, there are not yet */
+  /* any notifier hooks that will tell us when a module */
+  /* is unloading. */
+  unsigned long module;
 
-#endif /* _RUNTIME_H_ */
+  /* the start of the module's text and data sections */
+  unsigned long text;
+  unsigned long data;
+
+  /* how many symbols this module has that we are interested in */
+  unsigned num_symbols;
+
+  /* how many sections this module has */
+  unsigned num_sections;
+  struct _stp_symbol *sections;
+
+  /* how the symbol_data below was allocated */
+  int allocated;  /* 0 = kmalloc, 1 = vmalloc */
+  
+  /* an array of num_symbols _stp_symbol structs */
+  struct _stp_symbol *symbols; /* ordered by address */
+
+  /* where we stash our copy of the strtab */
+  void *symbol_data; /* private */
+};
+
+#ifndef STP_MAX_MODULES
+#define STP_MAX_MODULES 128
+#endif
+
+/* the alphabetical array of modules */
+struct _stp_module *_stp_modules[STP_MAX_MODULES];
+
+/* the array of modules ordered by addresses */
+struct _stp_module *_stp_modules_by_addr[STP_MAX_MODULES];
+
+/* the number of modules in the arrays */
+int _stp_num_modules = 0;
+
+#endif /* _STAP_SYMBOLS_H_ */