Toolchain/binutils-gdb
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2002-10-21 Jim Blandy <jimb@redhat.com>

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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.
This commit is contained in:
Elena Zannoni
2002-10-21 19:11:50 +00:00
parent 550633cbb1
commit 9d774e4455
5 changed files with 86 additions and 1 deletions
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32
gdb/dwarf2read.c
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@@ -410,6 +410,12 @@ static int islocal; /* Variable is at the returned offset
this function, so we can't say
which register it's relative to;
use LOC_LOCAL. */
static int is_thread_local; /* Variable is at a constant offset in the
thread-local storage block for the
current thread and the dynamic linker
module containing this expression.
decode_locdesc returns the offset from
that base. */
/* DW_AT_frame_base values for the current function.
frame_base_reg is -1 if DW_AT_frame_base is missing, otherwise it
@@ -4788,6 +4794,14 @@ new_symbol (struct die_info *die, struct type *type, struct objfile *objfile,
"external variable");
}
add_symbol_to_list (sym, &global_symbols);
if (is_thread_local)
{
/* SYMBOL_VALUE_ADDRESS contains at this point the
offset of the variable within the thread local
storage. */
SYMBOL_CLASS (sym) = LOC_THREAD_LOCAL_STATIC;
SYMBOL_OBJFILE (sym) = objfile;
}
/* In shared libraries the address of the variable
in the location descriptor might still be relocatable,
@@ -4796,7 +4810,7 @@ new_symbol (struct die_info *die, struct type *type, struct objfile *objfile,
value is zero, the address of the variable will then
be determined from the minimal symbol table whenever
the variable is referenced. */
if (SYMBOL_VALUE_ADDRESS (sym))
else if (SYMBOL_VALUE_ADDRESS (sym))
{
fixup_symbol_section (sym, objfile);
SYMBOL_VALUE_ADDRESS (sym) +=
@@ -4846,6 +4860,11 @@ new_symbol (struct die_info *die, struct type *type, struct objfile *objfile,
{
SYMBOL_CLASS (sym) = LOC_LOCAL;
}
else if (is_thread_local)
{
SYMBOL_CLASS (sym) = LOC_THREAD_LOCAL_STATIC;
SYMBOL_OBJFILE (sym) = objfile;
}
else
{
fixup_symbol_section (sym, objfile);
@@ -6358,6 +6377,7 @@ decode_locdesc (struct dwarf_block *blk, struct objfile *objfile,
offreg = 0;
isderef = 0;
islocal = 0;
is_thread_local = 0;
optimized_out = 1;
while (i < size)
@@ -6581,6 +6601,16 @@ decode_locdesc (struct dwarf_block *blk, struct objfile *objfile,
complain (&dwarf2_complex_location_expr);
break;
case DW_OP_GNU_push_tls_address:
is_thread_local = 1;
/* The top of the stack has the offset from the beginning
of the thread control block at which the variable is located. */
/* Nothing should follow this operator, so the top of stack would
be returned. */
if (i < size)
complain (&dwarf2_complex_location_expr);
break;
default:
complain (&dwarf2_unsupported_stack_op, dwarf_stack_op_name (op));
return (stack[stacki]);