* dwarf2read.c (dwarf2_fetch_die_loc_sect_off): New function.
(dwarf2_fetch_die_loc_cu_off): Rename from dwarf2_fetch_die_location_block. Rewrite to use dwarf2_fetch_die_loc_sect_off. * dwarf2loc.h (dwarf2_fetch_die_loc_sect_off): Declare. (dwarf2_fetch_die_loc_cu_off): Rename. * dwarf2loc.c (indirect_pieced_value): Use dwarf2_fetch_die_loc_sect_off. * dwarf2expr.h (struct dwarf_expr_context) <len, data>: Update comment. (struct dwarf_expr_piece) <v.ptr.die>: Now a sect_offset. * dwarf2expr.c (add_piece): Update. (execute_stack_op) <DW_OP_GNU_implicit_pointer>: Update comment. testsuite * gdb.dwarf2/implptr-64bit.exp: Run tests with two CUs as well. (test): Add "two_cu" argument. * gdb.dwarf2/implptr-64bit.S: Move subprogram later; use ref_addr for types; allow two CUs.
This commit is contained in:
Tom Tromey
parent
93eed41f8e
commit
8b9737bf8c
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@ -1,3 +1,19 @@
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2012-12-10 Tom Tromey <tromey@redhat.com>
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* dwarf2read.c (dwarf2_fetch_die_loc_sect_off): New function.
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(dwarf2_fetch_die_loc_cu_off): Rename from
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dwarf2_fetch_die_location_block. Rewrite to use
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dwarf2_fetch_die_loc_sect_off.
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* dwarf2loc.h (dwarf2_fetch_die_loc_sect_off): Declare.
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(dwarf2_fetch_die_loc_cu_off): Rename.
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* dwarf2loc.c (indirect_pieced_value): Use
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dwarf2_fetch_die_loc_sect_off.
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* dwarf2expr.h (struct dwarf_expr_context) <len, data>: Update
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comment.
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(struct dwarf_expr_piece) <v.ptr.die>: Now a sect_offset.
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* dwarf2expr.c (add_piece): Update.
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(execute_stack_op) <DW_OP_GNU_implicit_pointer>: Update comment.
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2012-12-10 Tom Tromey <tromey@redhat.com>
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* buildsym.c (struct pending_block): Move from buildsym.h.
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@ -342,7 +342,7 @@ add_piece (struct dwarf_expr_context *ctx, ULONGEST size, ULONGEST offset)
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}
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else if (p->location == DWARF_VALUE_IMPLICIT_POINTER)
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{
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p->v.ptr.die.cu_off = ctx->len;
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p->v.ptr.die.sect_off = ctx->len;
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p->v.ptr.offset = value_as_long (dwarf_expr_fetch (ctx, 0));
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}
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else if (p->location == DWARF_VALUE_REGISTER)
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@ -872,7 +872,7 @@ execute_stack_op (struct dwarf_expr_context *ctx,
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error (_("DWARF-2 expression error: DW_OP_GNU_implicit_pointer "
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"is not allowed in frame context"));
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/* The referred-to DIE of cu_offset kind. */
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/* The referred-to DIE of sect_offset kind. */
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ctx->len = extract_unsigned_integer (op_ptr, ctx->ref_addr_size,
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byte_order);
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op_ptr += ctx->ref_addr_size;
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@ -165,7 +165,7 @@ struct dwarf_expr_context
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/* For DWARF_VALUE_LITERAL, the current literal value's length and
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data. For DWARF_VALUE_IMPLICIT_POINTER, LEN is the offset of the
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target DIE of cu_offset kind. */
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target DIE of sect_offset kind. */
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ULONGEST len;
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const gdb_byte *data;
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@ -236,7 +236,7 @@ struct dwarf_expr_piece
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struct
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{
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/* The referent DIE from DW_OP_GNU_implicit_pointer. */
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cu_offset die;
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sect_offset die;
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/* The byte offset into the resulting data. */
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LONGEST offset;
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} ptr;
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@ -429,8 +429,7 @@ per_cu_dwarf_call (struct dwarf_expr_context *ctx, cu_offset die_offset,
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{
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struct dwarf2_locexpr_baton block;
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block = dwarf2_fetch_die_location_block (die_offset, per_cu,
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get_frame_pc, baton);
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block = dwarf2_fetch_die_loc_cu_off (die_offset, per_cu, get_frame_pc, baton);
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/* DW_OP_call_ref is currently not supported. */
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gdb_assert (block.per_cu == per_cu);
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@ -2038,9 +2037,10 @@ indirect_pieced_value (struct value *value)
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byte_offset = value_as_address (value);
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gdb_assert (piece);
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baton = dwarf2_fetch_die_location_block (piece->v.ptr.die, c->per_cu,
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get_frame_address_in_block_wrapper,
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frame);
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baton
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= dwarf2_fetch_die_loc_sect_off (piece->v.ptr.die, c->per_cu,
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get_frame_address_in_block_wrapper,
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frame);
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return dwarf2_evaluate_loc_desc_full (TYPE_TARGET_TYPE (type), frame,
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baton.data, baton.size, baton.per_cu,
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@ -3205,8 +3205,8 @@ dwarf2_compile_expr_to_ax (struct agent_expr *expr, struct axs_value *loc,
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op_ptr += size;
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offset.cu_off = uoffset;
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block = dwarf2_fetch_die_location_block (offset, per_cu,
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get_ax_pc, expr);
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block = dwarf2_fetch_die_loc_cu_off (offset, per_cu,
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get_ax_pc, expr);
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/* DW_OP_call_ref is currently not supported. */
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gdb_assert (block.per_cu == per_cu);
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@ -62,7 +62,12 @@ const gdb_byte *dwarf2_find_location_expression
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size_t *locexpr_length,
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CORE_ADDR pc);
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struct dwarf2_locexpr_baton dwarf2_fetch_die_location_block
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struct dwarf2_locexpr_baton dwarf2_fetch_die_loc_sect_off
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(sect_offset offset_in_cu, struct dwarf2_per_cu_data *per_cu,
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CORE_ADDR (*get_frame_pc) (void *baton),
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void *baton);
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struct dwarf2_locexpr_baton dwarf2_fetch_die_loc_cu_off
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(cu_offset offset_in_cu, struct dwarf2_per_cu_data *per_cu,
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CORE_ADDR (*get_frame_pc) (void *baton),
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void *baton);
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@ -17334,12 +17334,11 @@ follow_die_ref (struct die_info *src_die, struct attribute *attr,
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dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */
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struct dwarf2_locexpr_baton
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dwarf2_fetch_die_location_block (cu_offset offset_in_cu,
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struct dwarf2_per_cu_data *per_cu,
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CORE_ADDR (*get_frame_pc) (void *baton),
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void *baton)
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dwarf2_fetch_die_loc_sect_off (sect_offset offset,
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struct dwarf2_per_cu_data *per_cu,
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CORE_ADDR (*get_frame_pc) (void *baton),
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void *baton)
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{
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sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off };
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struct dwarf2_cu *cu;
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struct die_info *die;
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struct attribute *attr;
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@ -17394,6 +17393,20 @@ dwarf2_fetch_die_location_block (cu_offset offset_in_cu,
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return retval;
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}
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/* Like dwarf2_fetch_die_loc_sect_off, but take a CU
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offset. */
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struct dwarf2_locexpr_baton
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dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu,
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struct dwarf2_per_cu_data *per_cu,
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CORE_ADDR (*get_frame_pc) (void *baton),
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void *baton)
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{
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sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off };
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return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton);
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}
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/* Return the type of the DIE at DIE_OFFSET in the CU named by
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PER_CU. */
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@ -1,3 +1,10 @@
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2012-12-10 Tom Tromey <tromey@redhat.com>
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* gdb.dwarf2/implptr-64bit.exp: Run tests with two CUs as well.
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(test): Add "two_cu" argument.
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* gdb.dwarf2/implptr-64bit.S: Move subprogram later; use ref_addr
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for types; allow two CUs.
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2012-12-09 Jan Kratochvil <jan.kratochvil@redhat.com>
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* gdb.dwarf2/dw2-compdir-oldgcc.S: New file.
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@ -18,11 +18,12 @@ d:
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/* Length of Compilation Unit Info */
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#if OFFSET_SIZE == 4
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# define OFFSET .4byte
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.4byte debug_end - 1f
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# define HEADER_LINE1
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# define HEADER_LINE2(END) .4byte END - 1f
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#elif OFFSET_SIZE == 8
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# define OFFSET .8byte
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.4byte 0xffffffff
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.8byte debug_end - 1f
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# define HEADER_LINE1 .4byte 0xffffffff
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# define HEADER_LINE2(END) .8byte END - 1f
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#else
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# error
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#endif
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@ -40,6 +41,16 @@ d:
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#else
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# error
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#endif
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#if TWO_CU
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# define END1 .Lcu_end_1
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#else
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# define END1 debug_end
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#endif
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HEADER_LINE1
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HEADER_LINE2(END1)
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1:
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.2byte DWARF_VERSION /* DWARF version number */
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OFFSET .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
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@ -68,13 +79,6 @@ d:
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.byte 0x0 /* end of children of DW_TAG_structure_type */
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.uleb128 6 /* Abbrev: DW_TAG_subprogram */
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.ascii "main\0" /* DW_AT_name */
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ADDR main /* DW_AT_low_pc */
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ADDR main + 0x100 /* DW_AT_high_pc */
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.4byte .Ltype_int - d /* DW_AT_type */
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.byte 1 /* DW_AT_external */
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.Ltype_structptr:
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.uleb128 0x5 /* DW_TAG_pointer_type */
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.byte ADDR_SIZE /* DW_AT_byte_size */
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@ -90,7 +94,32 @@ d:
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3:
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.byte 1, 1, 1, 1
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2:
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.4byte .Ltype_struct - d /* DW_AT_type */
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REF_ADDR .Ltype_struct - d /* DW_AT_type */
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#if TWO_CU
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.byte 0x0 /* end of children of CU */
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.Lcu_end_1:
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HEADER_LINE1
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HEADER_LINE2 (debug_end)
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1:
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.2byte DWARF_VERSION /* DWARF version number */
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OFFSET .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
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.byte ADDR_SIZE /* Pointer Size (in bytes) */
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.uleb128 0x1 /* (DIE (0xb) DW_TAG_compile_unit) */
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.ascii "GNU C 4.4.3\0" /* DW_AT_producer */
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.byte 0x1 /* DW_AT_language */
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.ascii "1.c\0" /* DW_AT_name */
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#endif
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.uleb128 6 /* Abbrev: DW_TAG_subprogram */
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.ascii "main\0" /* DW_AT_name */
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ADDR main /* DW_AT_low_pc */
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ADDR main + 0x100 /* DW_AT_high_pc */
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REF_ADDR .Ltype_int - d /* DW_AT_type */
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.byte 1 /* DW_AT_external */
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.uleb128 0x4 /* (DW_TAG_variable) */
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.ascii "p\0" /* DW_AT_name */
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@ -100,7 +129,7 @@ d:
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REF_ADDR .Lvar_out - d /* referenced DIE */
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.sleb128 0 /* offset */
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2:
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.4byte .Ltype_structptr - d /* DW_AT_type */
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REF_ADDR .Ltype_structptr - d /* DW_AT_type */
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.byte 0x0 /* end of children of main */
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@ -152,7 +181,7 @@ debug_end:
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.uleb128 0x02 /* (DW_AT_location) */
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.uleb128 0xa /* (DW_FORM_block1) */
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.uleb128 0x49 /* (DW_AT_type) */
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.uleb128 0x13 /* (DW_FORM_ref4) */
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.uleb128 0x10 /* (DW_FORM_ref_addr) */
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.byte 0x0
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.byte 0x0
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@ -176,7 +205,7 @@ debug_end:
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.uleb128 0x12 /* DW_AT_high_pc */
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.uleb128 0x1 /* DW_FORM_addr */
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.uleb128 0x49 /* DW_AT_type */
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.uleb128 0x13 /* DW_FORM_ref4 */
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.uleb128 0x10 /* DW_FORM_ref_addr */
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.uleb128 0x3f /* DW_AT_external */
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.uleb128 0xc /* DW_FORM_flag */
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.byte 0x0 /* Terminator */
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@ -22,16 +22,16 @@ if {![dwarf2_support]} {
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standard_testfile .S
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set mainfile main.c
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proc test { dwarf_version offset_size addr_size ref_addr_size } {
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proc test { dwarf_version offset_size addr_size ref_addr_size two_cu } {
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global testfile srcfile mainfile
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# 32-bit targets do not support any of the testcases; keep quiet there.
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set opts {quiet}
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foreach n { dwarf_version offset_size addr_size ref_addr_size } {
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foreach n { dwarf_version offset_size addr_size ref_addr_size two_cu } {
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lappend opts "additional_flags=-D[string toupper $n]=[expr "\$$n"]"
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}
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set name "d${dwarf_version}o${offset_size}a${addr_size}r${ref_addr_size}"
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set name "d${dwarf_version}o${offset_size}a${addr_size}r${ref_addr_size}t${two_cu}"
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set executable ${testfile}-${name}
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if [prepare_for_testing ${testfile}.exp $executable "${srcfile} ${mainfile}" $opts] {
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return -1
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@ -44,8 +44,12 @@ proc test { dwarf_version offset_size addr_size ref_addr_size } {
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gdb_test "p/x p->f" " = 0x1010101" $name
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}
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# DWARF_VERSION OFFSET_SIZE ADDR_SIZE REF_ADDR_SIZE
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test 2 8 4 4
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test 2 4 8 8
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test 3 8 4 8
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test 3 4 8 4
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# DWARF_VERSION OFFSET_SIZE ADDR_SIZE REF_ADDR_SIZE TWO_CU
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test 2 8 4 4 0
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test 2 4 8 8 0
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test 3 8 4 8 0
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test 3 4 8 4 0
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test 2 8 4 4 1
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test 2 4 8 8 1
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test 3 8 4 8 1
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test 3 4 8 4 1
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