/* Output Dwarf2 format symbol table information from GCC.
Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
Contributed by Gary Funck (gary@intrepid.com).
Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com).
Extensively modified by Jason Merrill (jason@cygnus.com).
static GTY(()) int dw2_string_counter;
static GTY(()) unsigned long dwarf2out_cfi_label_num;
+/* True if the compilation unit places functions in more than one section. */
+static GTY(()) bool have_multiple_function_sections = false;
+
+/* Whether the default text and cold text sections have been used at all. */
+
+static GTY(()) bool text_section_used = false;
+static GTY(()) bool cold_text_section_used = false;
+
+/* The default cold text section. */
+static GTY(()) section *cold_text_section;
+
#if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO)
/* Forward declarations for functions defined in this file. */
static HOST_WIDE_INT stack_adjust_offset (const_rtx);
static void output_cfi (dw_cfi_ref, dw_fde_ref, int);
static void output_call_frame_info (int);
+static void dwarf2out_note_section_used (void);
static void dwarf2out_stack_adjust (rtx, bool);
static void flush_queued_reg_saves (void);
static bool clobbers_queued_reg_save (const_rtx);
static void
dwarf2out_frame_debug_expr (rtx expr, const char *label)
{
- rtx src, dest;
+ rtx src, dest, span;
HOST_WIDE_INT offset;
/* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of
}
def_cfa_1 (label, &cfa);
- queue_reg_save (label, src, NULL_RTX, offset);
+ {
+ span = targetm.dwarf_register_span (src);
+
+ if (!span)
+ queue_reg_save (label, src, NULL_RTX, offset);
+ else
+ {
+ /* We have a PARALLEL describing where the contents of SRC
+ live. Queue register saves for each piece of the
+ PARALLEL. */
+ int par_index;
+ int limit;
+ HOST_WIDE_INT span_offset = offset;
+
+ gcc_assert (GET_CODE (span) == PARALLEL);
+
+ limit = XVECLEN (span, 0);
+ for (par_index = 0; par_index < limit; par_index++)
+ {
+ rtx elem = XVECEXP (span, 0, par_index);
+
+ queue_reg_save (label, elem, NULL_RTX, span_offset);
+ span_offset += GET_MODE_SIZE (GET_MODE (elem));
+ }
+ }
+ }
break;
default:
dw2_asm_output_data (1, (cfi->dw_cfi_opc
| (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)),
"DW_CFA_advance_loc " HOST_WIDE_INT_PRINT_HEX,
- cfi->dw_cfi_oprnd1.dw_cfi_offset);
+ ((unsigned HOST_WIDE_INT)
+ cfi->dw_cfi_oprnd1.dw_cfi_offset));
else if (cfi->dw_cfi_opc == DW_CFA_offset)
{
r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh);
specialization doesn't. */
if (TARGET_USES_WEAK_UNWIND_INFO
&& ! flag_asynchronous_unwind_tables
+ && flag_exceptions
&& for_eh)
for (i = 0; i < fde_table_in_use; i++)
if ((fde_table[i].nothrow || fde_table[i].all_throwers_are_sibcalls)
if (for_eh)
{
- rtx sym_ref = gen_rtx_SYMBOL_REF (Pmode, fde->dw_fde_begin);
- SYMBOL_REF_FLAGS (sym_ref) |= SYMBOL_FLAG_LOCAL;
- dw2_asm_output_encoded_addr_rtx (fde_encoding,
- sym_ref,
- false,
- "FDE initial location");
if (fde->dw_fde_switched_sections)
{
rtx sym_ref2 = gen_rtx_SYMBOL_REF (Pmode,
"FDE address range");
}
else
- dw2_asm_output_delta (size_of_encoded_value (fde_encoding),
- fde->dw_fde_end, fde->dw_fde_begin,
- "FDE address range");
+ {
+ rtx sym_ref = gen_rtx_SYMBOL_REF (Pmode, fde->dw_fde_begin);
+ SYMBOL_REF_FLAGS (sym_ref) |= SYMBOL_FLAG_LOCAL;
+ dw2_asm_output_encoded_addr_rtx (fde_encoding,
+ sym_ref,
+ false,
+ "FDE initial location");
+ dw2_asm_output_delta (size_of_encoded_value (fde_encoding),
+ fde->dw_fde_end, fde->dw_fde_begin,
+ "FDE address range");
+ }
}
else
{
- dw2_asm_output_addr (DWARF2_ADDR_SIZE, fde->dw_fde_begin,
- "FDE initial location");
if (fde->dw_fde_switched_sections)
{
dw2_asm_output_addr (DWARF2_ADDR_SIZE,
"FDE address range");
}
else
- dw2_asm_output_delta (DWARF2_ADDR_SIZE,
- fde->dw_fde_end, fde->dw_fde_begin,
- "FDE address range");
+ {
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, fde->dw_fde_begin,
+ "FDE initial location");
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE,
+ fde->dw_fde_end, fde->dw_fde_begin,
+ "FDE address range");
+ }
}
if (augmentation[0])
fde->dw_fde_cfi = NULL;
fde->funcdef_number = current_function_funcdef_no;
fde->nothrow = TREE_NOTHROW (current_function_decl);
- fde->uses_eh_lsda = cfun->uses_eh_lsda;
- fde->all_throwers_are_sibcalls = cfun->all_throwers_are_sibcalls;
+ fde->uses_eh_lsda = crtl->uses_eh_lsda;
+ fde->all_throwers_are_sibcalls = crtl->all_throwers_are_sibcalls;
args_size = old_args_size = 0;
output_call_frame_info (1);
#endif
}
+
+/* Note that the current function section is being used for code. */
+
+static void
+dwarf2out_note_section_used (void)
+{
+ section *sec = current_function_section ();
+ if (sec == text_section)
+ text_section_used = true;
+ else if (sec == cold_text_section)
+ cold_text_section_used = true;
+}
+
+void
+dwarf2out_switch_text_section (void)
+{
+ dw_fde_ref fde;
+
+ gcc_assert (cfun);
+
+ fde = &fde_table[fde_table_in_use - 1];
+ fde->dw_fde_switched_sections = true;
+ fde->dw_fde_hot_section_label = crtl->subsections.hot_section_label;
+ fde->dw_fde_hot_section_end_label = crtl->subsections.hot_section_end_label;
+ fde->dw_fde_unlikely_section_label = crtl->subsections.cold_section_label;
+ fde->dw_fde_unlikely_section_end_label = crtl->subsections.cold_section_end_label;
+ have_multiple_function_sections = true;
+
+ /* Reset the current label on switching text sections, so that we
+ don't attempt to advance_loc4 between labels in different sections. */
+ fde->dw_fde_current_label = NULL;
+
+ /* There is no need to mark used sections when not debugging. */
+ if (cold_text_section != NULL)
+ dwarf2out_note_section_used ();
+}
#endif
\f
/* And now, the subset of the debugging information support code necessary
static void dwarf2out_abstract_function (tree);
static void dwarf2out_var_location (rtx);
static void dwarf2out_begin_function (tree);
-static void dwarf2out_switch_text_section (void);
/* The debug hooks structure. */
The children of each node form a circular list linked by
die_sib. die_child points to the node *before* the "first" child node. */
-typedef struct die_struct GTY(())
+typedef struct die_struct GTY((chain_circular ("%h.die_sib")))
{
enum dwarf_tag die_tag;
char *die_symbol;
/* Number of elements in line_info_table currently in use. */
static GTY(()) unsigned line_info_table_in_use;
-/* True if the compilation unit places functions in more than one section. */
-static GTY(()) bool have_multiple_function_sections = false;
-
/* A pointer to the base of a table that contains line information
for each source code line outside of .text in the compilation unit. */
static GTY ((length ("separate_line_info_table_allocated")))
/* Cached result of previous call to lookup_filename. */
static GTY(()) struct dwarf_file_data * file_table_last_lookup;
-/* Whether the default text and cold text sections have been used at
- all. */
-
-static GTY(()) bool text_section_used = false;
-static GTY(()) bool cold_text_section_used = false;
-
-/* The default cold text section. */
-static GTY(()) section *cold_text_section;
-
#ifdef DWARF2_DEBUGGING_INFO
/* Offset from the "steady-state frame pointer" to the frame base,
static void output_comp_unit (dw_die_ref, int);
static const char *dwarf2_name (tree, int);
static void add_pubname (tree, dw_die_ref);
+static void add_pubname_string (const char *, dw_die_ref);
static void add_pubtype (tree, dw_die_ref);
static void output_pubnames (VEC (pubname_entry,gc) *);
static void add_arange (tree, dw_die_ref);
static const char *decl_start_label (tree);
#endif
static void gen_array_type_die (tree, dw_die_ref);
+static void gen_descr_array_type_die (tree, struct array_descr_info *, dw_die_ref);
#if 0
static void gen_entry_point_die (tree, dw_die_ref);
#endif
/* Section flags for .debug_str section. */
#define DEBUG_STR_SECTION_FLAGS \
- (HAVE_GAS_SHF_MERGE && flag_merge_constants \
+ (HAVE_GAS_SHF_MERGE && flag_merge_debug_strings \
? SECTION_DEBUG | SECTION_MERGE | SECTION_STRINGS | 1 \
: SECTION_DEBUG)
return "DW_TAG_namelist";
case DW_TAG_namelist_item:
return "DW_TAG_namelist_item";
- case DW_TAG_namespace:
- return "DW_TAG_namespace";
case DW_TAG_packed_type:
return "DW_TAG_packed_type";
case DW_TAG_subprogram:
return "DW_TAG_variable";
case DW_TAG_volatile_type:
return "DW_TAG_volatile_type";
+ case DW_TAG_dwarf_procedure:
+ return "DW_TAG_dwarf_procedure";
+ case DW_TAG_restrict_type:
+ return "DW_TAG_restrict_type";
+ case DW_TAG_interface_type:
+ return "DW_TAG_interface_type";
+ case DW_TAG_namespace:
+ return "DW_TAG_namespace";
case DW_TAG_imported_module:
return "DW_TAG_imported_module";
+ case DW_TAG_unspecified_type:
+ return "DW_TAG_unspecified_type";
+ case DW_TAG_partial_unit:
+ return "DW_TAG_partial_unit";
+ case DW_TAG_imported_unit:
+ return "DW_TAG_imported_unit";
+ case DW_TAG_condition:
+ return "DW_TAG_condition";
+ case DW_TAG_shared_type:
+ return "DW_TAG_shared_type";
case DW_TAG_MIPS_loop:
return "DW_TAG_MIPS_loop";
case DW_TAG_format_label:
return "DW_AT_return_addr";
case DW_AT_start_scope:
return "DW_AT_start_scope";
- case DW_AT_stride_size:
- return "DW_AT_stride_size";
+ case DW_AT_bit_stride:
+ return "DW_AT_bit_stride";
case DW_AT_upper_bound:
return "DW_AT_upper_bound";
case DW_AT_abstract_origin:
return "DW_AT_associated";
case DW_AT_data_location:
return "DW_AT_data_location";
- case DW_AT_stride:
- return "DW_AT_stride";
+ case DW_AT_byte_stride:
+ return "DW_AT_byte_stride";
case DW_AT_entry_pc:
return "DW_AT_entry_pc";
case DW_AT_use_UTF8:
{
case DW_TAG_array_type:
case DW_TAG_class_type:
+ case DW_TAG_interface_type:
case DW_TAG_enumeration_type:
case DW_TAG_pointer_type:
case DW_TAG_reference_type:
*d = new_loc_list (descr, begin, end, section, 0);
}
-/* Note that the current function section is being used for code. */
-
-static void
-dwarf2out_note_section_used (void)
-{
- section *sec = current_function_section ();
- if (sec == text_section)
- text_section_used = true;
- else if (sec == cold_text_section)
- cold_text_section_used = true;
-}
-
-static void
-dwarf2out_switch_text_section (void)
-{
- dw_fde_ref fde;
-
- gcc_assert (cfun);
-
- fde = &fde_table[fde_table_in_use - 1];
- fde->dw_fde_switched_sections = true;
- fde->dw_fde_hot_section_label = cfun->hot_section_label;
- fde->dw_fde_hot_section_end_label = cfun->hot_section_end_label;
- fde->dw_fde_unlikely_section_label = cfun->cold_section_label;
- fde->dw_fde_unlikely_section_end_label = cfun->cold_section_end_label;
- have_multiple_function_sections = true;
-
- /* Reset the current label on switching text sections, so that we
- don't attempt to advance_loc4 between labels in different sections. */
- fde->dw_fde_current_label = NULL;
-
- dwarf2out_note_section_used ();
-}
-
/* Output the location list given to us. */
static void
/* Add a new entry to .debug_pubnames if appropriate. */
static void
-add_pubname (tree decl, dw_die_ref die)
+add_pubname_string (const char *str, dw_die_ref die)
{
pubname_entry e;
- if (! TREE_PUBLIC (decl))
- return;
-
e.die = die;
- e.name = xstrdup (dwarf2_name (decl, 1));
+ e.name = xstrdup (str);
VEC_safe_push (pubname_entry, gc, pubname_table, &e);
}
+static void
+add_pubname (tree decl, dw_die_ref die)
+{
+
+ if (TREE_PUBLIC (decl))
+ add_pubname_string (dwarf2_name (decl, 1), die);
+}
+
/* Add a new entry to .debug_pubtypes if appropriate. */
static void
current_line = 1;
if (cfun && in_cold_section_p)
- strcpy (prev_line_label, cfun->cold_section_label);
+ strcpy (prev_line_label, crtl->subsections.cold_section_label);
else
strcpy (prev_line_label, text_section_label);
for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index)
case FIXED_POINT_TYPE:
if (TYPE_UNSIGNED (type))
- encoding = DW_ATE_signed_fixed;
- else
encoding = DW_ATE_unsigned_fixed;
+ else
+ encoding = DW_ATE_signed_fixed;
break;
/* Dwarf2 doesn't know anything about complex ints, so use
if (DECL_THREAD_LOCAL_P (loc))
{
rtx rtl;
+ unsigned first_op;
+ unsigned second_op;
- /* If this is not defined, we have no way to emit the data. */
- if (!targetm.have_tls || !targetm.asm_out.output_dwarf_dtprel)
- return 0;
-
- /* The way DW_OP_GNU_push_tls_address is specified, we can only
- look up addresses of objects in the current module. */
- if (DECL_EXTERNAL (loc))
- return 0;
-
+ if (targetm.have_tls)
+ {
+ /* If this is not defined, we have no way to emit the
+ data. */
+ if (!targetm.asm_out.output_dwarf_dtprel)
+ return 0;
+
+ /* The way DW_OP_GNU_push_tls_address is specified, we
+ can only look up addresses of objects in the current
+ module. */
+ if (DECL_EXTERNAL (loc))
+ return 0;
+ first_op = INTERNAL_DW_OP_tls_addr;
+ second_op = DW_OP_GNU_push_tls_address;
+ }
+ else
+ {
+ if (!targetm.emutls.debug_form_tls_address)
+ return 0;
+ loc = emutls_decl (loc);
+ first_op = DW_OP_addr;
+ second_op = DW_OP_form_tls_address;
+ }
+
rtl = rtl_for_decl_location (loc);
if (rtl == NULL_RTX)
return 0;
if (! CONSTANT_P (rtl))
return 0;
- ret = new_loc_descr (INTERNAL_DW_OP_tls_addr, 0, 0);
+ ret = new_loc_descr (first_op, 0, 0);
ret->dw_loc_oprnd1.val_class = dw_val_class_addr;
ret->dw_loc_oprnd1.v.val_addr = rtl;
-
- ret1 = new_loc_descr (DW_OP_GNU_push_tls_address, 0, 0);
+
+ ret1 = new_loc_descr (second_op, 0, 0);
add_loc_descr (&ret, ret1);
have_address = 1;
case COMPOUND_EXPR:
return loc_descriptor_from_tree_1 (TREE_OPERAND (loc, 1), want_address);
- case NOP_EXPR:
- case CONVERT_EXPR:
- case NON_LVALUE_EXPR:
+ CASE_CONVERT:
case VIEW_CONVERT_EXPR:
case SAVE_EXPR:
case GIMPLE_MODIFY_STMT:
if (!node->output)
return *tp;
}
+ else if (TREE_CODE (*tp) == STRING_CST && !TREE_ASM_WRITTEN (*tp))
+ return *tp;
return NULL_TREE;
}
secname = TREE_STRING_POINTER (sectree);
}
else if (cfun && in_cold_section_p)
- secname = cfun->cold_section_label;
+ secname = crtl->subsections.cold_section_label;
else
secname = text_section_label;
return secname;
}
+/* Check whether decl is a Fortran COMMON symbol. If not, NULL_RTX is returned.
+ If so, the rtx for the SYMBOL_REF for the COMMON block is returned, and the
+ value is the offset into the common block for the symbol. */
+
+static tree
+fortran_common (tree decl, HOST_WIDE_INT *value)
+{
+ tree val_expr, cvar;
+ enum machine_mode mode;
+ HOST_WIDE_INT bitsize, bitpos;
+ tree offset;
+ int volatilep = 0, unsignedp = 0;
+
+ /* If the decl isn't a VAR_DECL, or if it isn't public or static, or if
+ it does not have a value (the offset into the common area), or if it
+ is thread local (as opposed to global) then it isn't common, and shouldn't
+ be handled as such. */
+ if (TREE_CODE (decl) != VAR_DECL
+ || !TREE_PUBLIC (decl)
+ || !TREE_STATIC (decl)
+ || !DECL_HAS_VALUE_EXPR_P (decl)
+ || !is_fortran ())
+ return NULL_TREE;
+
+ val_expr = DECL_VALUE_EXPR (decl);
+ if (TREE_CODE (val_expr) != COMPONENT_REF)
+ return NULL_TREE;
+
+ cvar = get_inner_reference (val_expr, &bitsize, &bitpos, &offset,
+ &mode, &unsignedp, &volatilep, true);
+
+ if (cvar == NULL_TREE
+ || TREE_CODE (cvar) != VAR_DECL
+ || DECL_ARTIFICIAL (cvar)
+ || !TREE_PUBLIC (cvar))
+ return NULL_TREE;
+
+ *value = 0;
+ if (offset != NULL)
+ {
+ if (!host_integerp (offset, 0))
+ return NULL_TREE;
+ *value = tree_low_cst (offset, 0);
+ }
+ if (bitpos != 0)
+ *value += bitpos / BITS_PER_UNIT;
+
+ return cvar;
+}
+
+
/* Generate *either* a DW_AT_location attribute or else a DW_AT_const_value
data attribute for a variable or a parameter. We generate the
DW_AT_const_value attribute only in those cases where the given variable
add_AT_unsigned (subrange_die, bound_attr, tree_low_cst (bound, 0));
break;
- case CONVERT_EXPR:
- case NOP_EXPR:
- case NON_LVALUE_EXPR:
+ CASE_CONVERT:
case VIEW_CONVERT_EXPR:
add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0));
break;
&& TREE_PUBLIC (decl)
&& DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)
&& !DECL_ABSTRACT (decl)
- && !(TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)))
+ && !(TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
+ && !is_fortran ())
add_AT_string (die, DW_AT_MIPS_linkage_name,
IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
}
{
return (context_die
&& (context_die->die_tag == DW_TAG_structure_type
+ || context_die->die_tag == DW_TAG_class_type
+ || context_die->die_tag == DW_TAG_interface_type
|| context_die->die_tag == DW_TAG_union_type
|| context_die->die_tag == DW_TAG_namespace));
}
/* Given an object die, add the calling convention attribute for the
function call type. */
static void
-add_calling_convention_attribute (dw_die_ref subr_die, tree type)
+add_calling_convention_attribute (dw_die_ref subr_die, tree decl)
{
enum dwarf_calling_convention value = DW_CC_normal;
- value = targetm.dwarf_calling_convention (type);
+ value = targetm.dwarf_calling_convention (TREE_TYPE (decl));
+
+ /* DWARF doesn't provide a way to identify a program's source-level
+ entry point. DW_AT_calling_convention attributes are only meant
+ to describe functions' calling conventions. However, lacking a
+ better way to signal the Fortran main program, we use this for the
+ time being, following existing custom. */
+ if (is_fortran ()
+ && !strcmp (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), "MAIN__"))
+ value = DW_CC_program;
/* Only add the attribute if the backend requests it, and
is not DW_CC_normal. */
add_AT_flag (array_die, DW_AT_GNU_vector, 1);
}
+ /* For Fortran multidimensional arrays use DW_ORD_col_major ordering. */
+ if (is_fortran ()
+ && TREE_CODE (type) == ARRAY_TYPE
+ && TREE_CODE (TREE_TYPE (type)) == ARRAY_TYPE)
+ add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_col_major);
+
#if 0
/* We default the array ordering. SDB will probably do
the right things even if DW_AT_ordering is not present. It's not even
add_pubtype (type, array_die);
}
+static dw_loc_descr_ref
+descr_info_loc (tree val, tree base_decl)
+{
+ HOST_WIDE_INT size;
+ dw_loc_descr_ref loc, loc2;
+ enum dwarf_location_atom op;
+
+ if (val == base_decl)
+ return new_loc_descr (DW_OP_push_object_address, 0, 0);
+
+ switch (TREE_CODE (val))
+ {
+ CASE_CONVERT:
+ return descr_info_loc (TREE_OPERAND (val, 0), base_decl);
+ case INTEGER_CST:
+ if (host_integerp (val, 0))
+ return int_loc_descriptor (tree_low_cst (val, 0));
+ break;
+ case INDIRECT_REF:
+ size = int_size_in_bytes (TREE_TYPE (val));
+ if (size < 0)
+ break;
+ loc = descr_info_loc (TREE_OPERAND (val, 0), base_decl);
+ if (!loc)
+ break;
+ if (size == DWARF2_ADDR_SIZE)
+ add_loc_descr (&loc, new_loc_descr (DW_OP_deref, 0, 0));
+ else
+ add_loc_descr (&loc, new_loc_descr (DW_OP_deref_size, size, 0));
+ return loc;
+ case POINTER_PLUS_EXPR:
+ case PLUS_EXPR:
+ if (host_integerp (TREE_OPERAND (val, 1), 1)
+ && (unsigned HOST_WIDE_INT) tree_low_cst (TREE_OPERAND (val, 1), 1)
+ < 16384)
+ {
+ loc = descr_info_loc (TREE_OPERAND (val, 0), base_decl);
+ if (!loc)
+ break;
+ add_loc_descr (&loc,
+ new_loc_descr (DW_OP_plus_uconst,
+ tree_low_cst (TREE_OPERAND (val, 1),
+ 1), 0));
+ }
+ else
+ {
+ op = DW_OP_plus;
+ do_binop:
+ loc = descr_info_loc (TREE_OPERAND (val, 0), base_decl);
+ if (!loc)
+ break;
+ loc2 = descr_info_loc (TREE_OPERAND (val, 1), base_decl);
+ if (!loc2)
+ break;
+ add_loc_descr (&loc, loc2);
+ add_loc_descr (&loc2, new_loc_descr (op, 0, 0));
+ }
+ return loc;
+ case MINUS_EXPR:
+ op = DW_OP_minus;
+ goto do_binop;
+ case MULT_EXPR:
+ op = DW_OP_mul;
+ goto do_binop;
+ case EQ_EXPR:
+ op = DW_OP_eq;
+ goto do_binop;
+ case NE_EXPR:
+ op = DW_OP_ne;
+ goto do_binop;
+ default:
+ break;
+ }
+ return NULL;
+}
+
+static void
+add_descr_info_field (dw_die_ref die, enum dwarf_attribute attr,
+ tree val, tree base_decl)
+{
+ dw_loc_descr_ref loc;
+
+ if (host_integerp (val, 0))
+ {
+ add_AT_unsigned (die, attr, tree_low_cst (val, 0));
+ return;
+ }
+
+ loc = descr_info_loc (val, base_decl);
+ if (!loc)
+ return;
+
+ add_AT_loc (die, attr, loc);
+}
+
+/* This routine generates DIE for array with hidden descriptor, details
+ are filled into *info by a langhook. */
+
+static void
+gen_descr_array_type_die (tree type, struct array_descr_info *info,
+ dw_die_ref context_die)
+{
+ dw_die_ref scope_die = scope_die_for (type, context_die);
+ dw_die_ref array_die;
+ int dim;
+
+ array_die = new_die (DW_TAG_array_type, scope_die, type);
+ add_name_attribute (array_die, type_tag (type));
+ equate_type_number_to_die (type, array_die);
+
+ /* For Fortran multidimensional arrays use DW_ORD_col_major ordering. */
+ if (is_fortran ()
+ && info->ndimensions >= 2)
+ add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_col_major);
+
+ if (info->data_location)
+ add_descr_info_field (array_die, DW_AT_data_location, info->data_location,
+ info->base_decl);
+ if (info->associated)
+ add_descr_info_field (array_die, DW_AT_associated, info->associated,
+ info->base_decl);
+ if (info->allocated)
+ add_descr_info_field (array_die, DW_AT_allocated, info->allocated,
+ info->base_decl);
+
+ for (dim = 0; dim < info->ndimensions; dim++)
+ {
+ dw_die_ref subrange_die
+ = new_die (DW_TAG_subrange_type, array_die, NULL);
+
+ if (info->dimen[dim].lower_bound)
+ {
+ /* If it is the default value, omit it. */
+ if ((is_c_family () || is_java ())
+ && integer_zerop (info->dimen[dim].lower_bound))
+ ;
+ else if (is_fortran ()
+ && integer_onep (info->dimen[dim].lower_bound))
+ ;
+ else
+ add_descr_info_field (subrange_die, DW_AT_lower_bound,
+ info->dimen[dim].lower_bound,
+ info->base_decl);
+ }
+ if (info->dimen[dim].upper_bound)
+ add_descr_info_field (subrange_die, DW_AT_upper_bound,
+ info->dimen[dim].upper_bound,
+ info->base_decl);
+ if (info->dimen[dim].stride)
+ add_descr_info_field (subrange_die, DW_AT_byte_stride,
+ info->dimen[dim].stride,
+ info->base_decl);
+ }
+
+ gen_type_die (info->element_type, context_die);
+ add_type_attribute (array_die, info->element_type, 0, 0, context_die);
+
+ if (get_AT (array_die, DW_AT_name))
+ add_pubtype (type, array_die);
+}
+
#if 0
static void
gen_entry_point_die (tree decl, dw_die_ref context_die)
add_abstract_origin_attribute (type_die, type);
}
+/* Determine what tag to use for a record type. */
+
+static enum dwarf_tag
+record_type_tag (tree type)
+{
+ if (! lang_hooks.types.classify_record)
+ return DW_TAG_structure_type;
+
+ switch (lang_hooks.types.classify_record (type))
+ {
+ case RECORD_IS_STRUCT:
+ return DW_TAG_structure_type;
+
+ case RECORD_IS_CLASS:
+ return DW_TAG_class_type;
+
+ case RECORD_IS_INTERFACE:
+ return DW_TAG_interface_type;
+
+ default:
+ gcc_unreachable ();
+ }
+}
+
/* Generate a DIE to represent an inlined instance of a structure type. */
static void
gen_inlined_structure_type_die (tree type, dw_die_ref context_die)
{
- dw_die_ref type_die = new_die (DW_TAG_structure_type, context_die, type);
+ dw_die_ref type_die = new_die (record_type_tag (type), context_die, type);
/* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may
be incomplete and such types are not marked. */
add_abstract_origin_attribute (parm_die, origin);
else
{
+ tree type = TREE_TYPE (node);
add_name_and_src_coords_attributes (parm_die, node);
- add_type_attribute (parm_die, TREE_TYPE (node),
+ if (DECL_BY_REFERENCE (node))
+ type = TREE_TYPE (type);
+ add_type_attribute (parm_die, type,
TREE_READONLY (node),
TREE_THIS_VOLATILE (node),
context_die);
#endif
}
/* Add the calling convention attribute if requested. */
- add_calling_convention_attribute (subr_die, TREE_TYPE (decl));
+ add_calling_convention_attribute (subr_die, decl);
}
static void
gen_variable_die (tree decl, dw_die_ref context_die)
{
+ HOST_WIDE_INT off;
+ tree com_decl;
+ dw_die_ref var_die;
tree origin = decl_ultimate_origin (decl);
- dw_die_ref var_die = new_die (DW_TAG_variable, context_die, decl);
-
dw_die_ref old_die = lookup_decl_die (decl);
int declaration = (DECL_EXTERNAL (decl)
/* If DECL is COMDAT and has not actually been
&& DECL_COMDAT (decl) && !TREE_ASM_WRITTEN (decl))
|| class_or_namespace_scope_p (context_die));
+ com_decl = fortran_common (decl, &off);
+
+ /* Symbol in common gets emitted as a child of the common block, in the form
+ of a data member.
+
+ ??? This creates a new common block die for every common block symbol.
+ Better to share same common block die for all symbols in that block. */
+ if (com_decl)
+ {
+ tree field;
+ dw_die_ref com_die;
+ const char *cnam = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (com_decl));
+ dw_loc_descr_ref loc = loc_descriptor_from_tree (com_decl);
+
+ field = TREE_OPERAND (DECL_VALUE_EXPR (decl), 0);
+ var_die = new_die (DW_TAG_common_block, context_die, decl);
+ add_name_and_src_coords_attributes (var_die, field);
+ add_AT_flag (var_die, DW_AT_external, 1);
+ add_AT_loc (var_die, DW_AT_location, loc);
+ com_die = new_die (DW_TAG_member, var_die, decl);
+ add_name_and_src_coords_attributes (com_die, decl);
+ add_type_attribute (com_die, TREE_TYPE (decl), TREE_READONLY (decl),
+ TREE_THIS_VOLATILE (decl), context_die);
+ add_AT_loc (com_die, DW_AT_data_member_location,
+ int_loc_descriptor (off));
+ add_pubname_string (cnam, var_die); /* ??? needed? */
+ return;
+ }
+
+ var_die = new_die (DW_TAG_variable, context_die, decl);
+
if (origin != NULL)
add_abstract_origin_attribute (var_die, origin);
}
else
{
+ tree type = TREE_TYPE (decl);
+ if ((TREE_CODE (decl) == PARM_DECL
+ || TREE_CODE (decl) == RESULT_DECL)
+ && DECL_BY_REFERENCE (decl))
+ type = TREE_TYPE (type);
+
add_name_and_src_coords_attributes (var_die, decl);
- add_type_attribute (var_die, TREE_TYPE (decl), TREE_READONLY (decl),
+ add_type_attribute (var_die, type, TREE_READONLY (decl),
TREE_THIS_VOLATILE (decl), context_die);
if (TREE_PUBLIC (decl))
language = DW_LANG_Ada95;
else if (strcmp (language_string, "GNU F77") == 0)
language = DW_LANG_Fortran77;
- else if (strcmp (language_string, "GNU F95") == 0)
+ else if (strcmp (language_string, "GNU Fortran") == 0)
language = DW_LANG_Fortran95;
else if (strcmp (language_string, "GNU Pascal") == 0)
language = DW_LANG_Pascal83;
dw_die_ref old_die = type_die;
type_die = new_die (TREE_CODE (type) == RECORD_TYPE
- ? DW_TAG_structure_type : DW_TAG_union_type,
+ ? record_type_tag (type) : DW_TAG_union_type,
scope_die, type);
equate_type_number_to_die (type, type_die);
if (old_die)
enum debug_info_usage usage)
{
int need_pop;
+ struct array_descr_info info;
if (type == NULL_TREE || type == error_mark_node)
return;
return;
}
+ /* If this is an array type with hidden descriptor, handle it first. */
+ if (!TREE_ASM_WRITTEN (type)
+ && lang_hooks.types.get_array_descr_info
+ && lang_hooks.types.get_array_descr_info (type, &info))
+ {
+ gen_descr_array_type_die (type, &info, context_die);
+ TREE_ASM_WRITTEN (type) = 1;
+ return;
+ }
+
/* We are going to output a DIE to represent the unqualified version
of this type (i.e. without any const or volatile qualifiers) so
get the main variant (i.e. the unqualified version) of this type
add_child_die (context_die, die);
/* Do not produce debug information for static variables since
these might be optimized out. We are called for these later
- in varpool_analyze_pending_decls. */
- if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
+ in varpool_analyze_pending_decls.
+
+ But *do* produce it for Fortran COMMON variables because,
+ even though they are static, their names can differ depending
+ on the scope, which we need to preserve. */
+ if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
+ && !(is_fortran () && TREE_PUBLIC (decl)))
;
else
gen_decl_die (decl, context_die);
else
context_die = comp_unit_die;
- type_die = lookup_type_die (type);
- if (type_die)
- return type_die;
- gen_type_die (type, context_die);
- type_die = lookup_type_die (type);
+ type_die = modified_type_die (type, TYPE_READONLY (type),
+ TYPE_VOLATILE (type), context_die);
gcc_assert (type_die);
}
return type_die;
if (debug_info_level <= DINFO_LEVEL_TERSE)
break;
+ /* If this is the global definition of the Fortran COMMON block, we don't
+ need to do anything. Syntactically, the block itself has no identity,
+ just its constituent identifiers. */
+ if (TREE_CODE (decl) == VAR_DECL
+ && TREE_PUBLIC (decl)
+ && TREE_STATIC (decl)
+ && is_fortran ()
+ && !DECL_HAS_VALUE_EXPR_P (decl))
+ break;
+
/* Output any DIEs that are needed to specify the type of this data
object. */
- gen_type_die (TREE_TYPE (decl), context_die);
+ if (TREE_CODE (decl) == RESULT_DECL && DECL_BY_REFERENCE (decl))
+ gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die);
+ else
+ gen_type_die (TREE_TYPE (decl), context_die);
/* And its containing type. */
origin = decl_class_context (decl);
break;
case PARM_DECL:
- gen_type_die (TREE_TYPE (decl), context_die);
+ if (DECL_BY_REFERENCE (decl))
+ gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die);
+ else
+ gen_type_die (TREE_TYPE (decl), context_die);
gen_formal_parameter_die (decl, context_die);
break;
/* Output DWARF2 information for file-scope tentative data object
declarations, file-scope (extern) function declarations (which had no
corresponding body) and file-scope tagged type declarations and
- definitions which have not yet been forced out. */
+ definitions which have not yet been forced out.
+
+ Ignore the global decl of any Fortran COMMON blocks which also wind up here
+ though they have already been described in the local scope for the
+ procedures using them. */
+ if (TREE_CODE (decl) == VAR_DECL
+ && TREE_PUBLIC (decl) && TREE_STATIC (decl) && is_fortran ())
+ return;
+
if (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))
dwarf2out_decl (decl);
}
newloc->next = NULL;
if (cfun && in_cold_section_p)
- newloc->section_label = cfun->cold_section_label;
+ newloc->section_label = crtl->subsections.cold_section_label;
else
newloc->section_label = text_section_label;
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_class_type:
+ case DW_TAG_interface_type:
case DW_TAG_friend:
case DW_TAG_variant_part:
case DW_TAG_enumeration_type:
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