2002-10-21 Jim Blandy <jimb@redhat.com>

	    Elena Zannoni  <ezannoni@redhat.com>

	* symtab.h (address_class): Re-add LOC_THREAD_LOCAL_STATIC
	for thread local storage locations.
	(struct symbol): Add objfile field.
	(SYMBOL_OBJFILE): Define.
	* dwarf2read.c (is_thread_local): New static variable.
	(new_symbol): If variable is in thread local fill in address class
	and objfile appropriately.
	(decode_locdesc): Recognize and handle DW_OP_GNU_push_tls_address
	stack operation.
	* printcmd.c (address_info): Print the information for thread
	local storage variable.
	* findvar.c (read_var_value): In case of thread local variable,
	defer to the target vector code to compute address.

1 files changed, 15 insertions, 0 deletions

diff --git a/gdb/symtab.h b/gdb/symtab.h
index 520e81e..b84cac6 100644
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -629,6 +629,14 @@ enum address_class
 
   LOC_HP_THREAD_LOCAL_STATIC,
 
+  /* Value is at a thread-specific location calculated by a
+     target-specific method.  SYMBOL_OBJFILE gives the object file
+     in which the symbol is defined; the symbol's value is the
+     offset into that objfile's thread-local storage for the current
+     thread.  */
+      
+  LOC_THREAD_LOCAL_STATIC,
+
   /* The variable does not actually exist in the program.
      The value is ignored.  */
 
@@ -698,6 +706,12 @@ struct symbol
   {
     /* Used by LOC_BASEREG and LOC_BASEREG_ARG.  */
     short basereg;
+
+    /* Used by LOC_THREAD_LOCAL_STATIC.  The objfile in which this
+       symbol is defined.  To find a thread-local variable (e.g., a
+       variable declared with the `__thread' storage class), we may
+       need to know which object file it's in.  */
+    struct objfile *objfile;
   }
   aux_value;
 
@@ -719,6 +733,7 @@ struct symbol
 #define SYMBOL_TYPE(symbol)		(symbol)->type
 #define SYMBOL_LINE(symbol)		(symbol)->line
 #define SYMBOL_BASEREG(symbol)		(symbol)->aux_value.basereg
+#define SYMBOL_OBJFILE(symbol)          (symbol)->aux_value.objfile
 #define SYMBOL_ALIASES(symbol)		(symbol)->aliases
 #define SYMBOL_RANGES(symbol)		(symbol)->ranges