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Fix DW_OP_GNU_implicit_pointer for DWARF32 v3+ on 64-bit arches.
	* dwarf2-frame.c (execute_stack_op): Initialize ctx->ref_addr_size.
	* dwarf2expr.c (execute_stack_op) <DW_OP_GNU_implicit_pointer>: Use
	ctx->ref_addr_size.  Handle its invalid value.
	* dwarf2expr.h (struct dwarf_expr_context): New field ref_addr_size.
	* dwarf2loc.c (dwarf2_evaluate_loc_desc_full)
	(dwarf2_loc_desc_needs_frame): Initialize ctx->ref_addr_size.
	* dwarf2loc.h (dwarf2_per_cu_ref_addr_size): New declaration.
	* dwarf2read.c (decode_locdesc): Initialize ctx->ref_addr_size.
	(dwarf2_per_cu_ref_addr_size): New function.

gdb/testsuite/
	Fix DW_OP_GNU_implicit_pointer for DWARF32 v3+ on 64-bit arches.
	* gdb.dwarf2/implptr-64bit.S: New file.
	* gdb.dwarf2/implptr-64bit.exp: New file.
This commit is contained in:
Jan Kratochvil
2011-10-09 18:46:41 +00:00
parent c471e7909f
commit 181cebd4f8
10 changed files with 302 additions and 2 deletions
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8
gdb/dwarf2expr.c
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@@ -709,10 +709,14 @@ execute_stack_op (struct dwarf_expr_context *ctx,
ULONGEST die;
LONGEST len;
if (ctx->ref_addr_size == -1)
error (_("DWARF-2 expression error: DW_OP_GNU_implicit_pointer "
"is not allowed in frame context"));
/* The referred-to DIE. */
ctx->len = extract_unsigned_integer (op_ptr, ctx->addr_size,
ctx->len = extract_unsigned_integer (op_ptr, ctx->ref_addr_size,
byte_order);
op_ptr += ctx->addr_size;
op_ptr += ctx->ref_addr_size;
/* The byte offset into the data. */
op_ptr = read_sleb128 (op_ptr, op_end, &len);