diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 30 | ||||
| -rw-r--r-- | gdb/doc/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 41 | ||||
| -rw-r--r-- | gdb/features/gdb-target.dtd | 17 | ||||
| -rw-r--r-- | gdb/gdbtypes.c | 19 | ||||
| -rw-r--r-- | gdb/gdbtypes.h | 2 | ||||
| -rw-r--r-- | gdb/target-descriptions.c | 192 | ||||
| -rw-r--r-- | gdb/target-descriptions.h | 10 | ||||
| -rw-r--r-- | gdb/testsuite/ChangeLog | 7 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.xml/extra-regs.xml | 18 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.xml/tdesc-regs.exp | 5 | ||||
| -rw-r--r-- | gdb/xml-tdesc.c | 164 |
12 files changed, 483 insertions, 26 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 944a4ca06c1..bf50dd49c08 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,33 @@ +2010-03-01 Daniel Jacobowitz <dan@codesourcery.com> + + * gdbtypes.c (append_composite_type_field_raw): New. + (append_composite_type_field_aligned): Use the new function. + * gdbtypes.h (append_composite_type_field_raw): Declare. + * target-descriptions.c (struct tdesc_type_field): Add start and end. + (struct tdesc_type_flag): New type. + (struct tdesc_type): Add TDESC_TYPE_STRUCT and TDESC_TYPE_FLAGS to + kind. Add size to u.u. Add u.f for flags. + (tdesc_gdb_type): Handle TDESC_TYPE_STRUCT and TDESC_TYPE_FLAGS. + (tdesc_free_type): Likewise. + (tdesc_create_struct, tdesc_set_struct_size, tdesc_create_flags): New. + (tdesc_add_field): Handle TDESC_TYPE_STRUCT. + (tdesc_add_bitfield, tdesc_add_flag): New. + * target-descriptions.h (tdesc_create_struct, tdesc_set_struct_size) + (tdesc_create_flags, tdesc_add_bitfield, tdesc_add_flag): Declare. + * xml-tdesc.c (struct tdesc_parsing_data): Rename current_union to + current_type. Add current_type_size and current_type_is_flags. + (tdesc_start_union): Clear the new fields. + (tdesc_start_struct, tdesc_start_flags): New. + (tdesc_start_field): Handle struct fields, including bitfields. + (field_attributes): Make type optional. Add start and end. + (union_children): Rename to struct_union_children. + (union_attributes): Rename to struct_union_attributes. Add optional + size. + (flags_attributes): New. + (feature_children): Add struct and flags. + * features/gdb-target.dtd: Add flags and struct to features. + Make field type optional. Add field start and end. + 2010-03-01 H.J. Lu <hongjiu.lu@intel.com> * amd64-linux-nat.c (AMD64_LINUX_USER64_CS): New. diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 078fdb92927..ab9437928a2 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,7 @@ +2010-03-01 Daniel Jacobowitz <dan@codesourcery.com> + + * gdb.texinfo (Types): Describe <struct> and <flags>. + 2010-02-28 Phil Muldoon <pmuldoon@redhat.com> * gdb.texinfo (Frames In Python): Add block parameter and diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index 460d0d5409d..6bb7d521253 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -33073,6 +33073,47 @@ each of which has a @var{name} and a @var{type}: </union> @end smallexample +@cindex <struct> +If a register's value is composed from several separate values, define +it with a structure type. There are two forms of the @samp{<struct>} +element; a @samp{<struct>} element must either contain only bitfields +or contain no bitfields. If the structure contains only bitfields, +its total size in bytes must be specified, each bitfield must have an +explicit start and end, and bitfields are automatically assigned an +integer type. The field's @var{start} should be less than or +equal to its @var{end}, and zero represents the least significant bit. + +@smallexample +<struct id="@var{id}" size="@var{size}"> + <field name="@var{name}" start="@var{start}" end="@var{end}"/> + @dots{} +</struct> +@end smallexample + +If the structure contains no bitfields, then each field has an +explicit type, and no implicit padding is added. + +@smallexample +<struct id="@var{id}"> + <field name="@var{name}" type="@var{type}"/> + @dots{} +</struct> +@end smallexample + +@cindex <flags> +If a register's value is a series of single-bit flags, define it with +a flags type. The @samp{<flags>} element has an explicit @var{size} +and contains one or more @samp{<field>} elements. Each field has a +@var{name}, a @var{start}, and an @var{end}. Only single-bit flags +are supported. + +@smallexample +<flags id="@var{id}" size="@var{size}"> + <field name="@var{name}" start="@var{start}" end="@var{end}"/> + @dots{} +</flags> +@end smallexample + @subsection Registers @cindex <reg> diff --git a/gdb/features/gdb-target.dtd b/gdb/features/gdb-target.dtd index 3ba7eca64e6..d5710caa771 100644 --- a/gdb/features/gdb-target.dtd +++ b/gdb/features/gdb-target.dtd @@ -19,7 +19,8 @@ <!ELEMENT compatible (#PCDATA)> -<!ELEMENT feature ((vector | union)*, reg*)> +<!ELEMENT feature + ((vector | flags | struct | union )*, reg*)> <!ATTLIST feature name ID #REQUIRED> @@ -39,6 +40,16 @@ type CDATA #REQUIRED count CDATA #REQUIRED> +<!ELEMENT flags (field+)> +<!ATTLIST flags + id CDATA #REQUIRED + size CDATA #REQUIRED> + +<!ELEMENT struct (field+)> +<!ATTLIST struct + id CDATA #REQUIRED + size CDATA #IMPLIED> + <!ELEMENT union (field+)> <!ATTLIST union id CDATA #REQUIRED> @@ -46,7 +57,9 @@ <!ELEMENT field EMPTY> <!ATTLIST field name CDATA #REQUIRED - type CDATA #REQUIRED> + type CDATA #IMPLIED + start CDATA #IMPLIED + end CDATA #IMPLIED> <!ENTITY % xinclude SYSTEM "xinclude.dtd"> %xinclude; diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c index 3269a8cdc8c..f6de8784b84 100644 --- a/gdb/gdbtypes.c +++ b/gdb/gdbtypes.c @@ -3303,10 +3303,11 @@ arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code) } /* Add new field with name NAME and type FIELD to composite type T. - ALIGNMENT (if non-zero) specifies the minimum field alignment. */ -void -append_composite_type_field_aligned (struct type *t, char *name, - struct type *field, int alignment) + Do not set the field's position or adjust the type's length; + the caller should do so. Return the new field. */ +struct field * +append_composite_type_field_raw (struct type *t, char *name, + struct type *field) { struct field *f; TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; @@ -3316,6 +3317,16 @@ append_composite_type_field_aligned (struct type *t, char *name, memset (f, 0, sizeof f[0]); FIELD_TYPE (f[0]) = field; FIELD_NAME (f[0]) = name; + return f; +} + +/* Add new field with name NAME and type FIELD to composite type T. + ALIGNMENT (if non-zero) specifies the minimum field alignment. */ +void +append_composite_type_field_aligned (struct type *t, char *name, + struct type *field, int alignment) +{ + struct field *f = append_composite_type_field_raw (t, name, field); if (TYPE_CODE (t) == TYPE_CODE_UNION) { if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) diff --git a/gdb/gdbtypes.h b/gdb/gdbtypes.h index 2859ce9bfe9..0315d861921 100644 --- a/gdb/gdbtypes.h +++ b/gdb/gdbtypes.h @@ -1249,6 +1249,8 @@ extern void append_composite_type_field_aligned (struct type *t, char *name, struct type *field, int alignment); +struct field *append_composite_type_field_raw (struct type *t, char *name, + struct type *field); /* Helper functions to construct a bit flags type. An initially empty type is created using arch_flag_type(). Flags are then added using diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 9856d6f76ca..77dd37b8d29 100644 --- a/gdb/target-descriptions.c +++ b/gdb/target-descriptions.c @@ -90,9 +90,17 @@ typedef struct tdesc_type_field { char *name; struct tdesc_type *type; + int start, end; } tdesc_type_field; DEF_VEC_O(tdesc_type_field); +typedef struct tdesc_type_flag +{ + char *name; + int start; +} tdesc_type_flag; +DEF_VEC_O(tdesc_type_flag); + typedef struct tdesc_type { /* The name of this type. */ @@ -123,7 +131,9 @@ typedef struct tdesc_type /* Types defined by a target feature. */ TDESC_TYPE_VECTOR, - TDESC_TYPE_UNION + TDESC_TYPE_STRUCT, + TDESC_TYPE_UNION, + TDESC_TYPE_FLAGS } kind; /* Kind-specific data. */ @@ -136,11 +146,19 @@ typedef struct tdesc_type int count; } v; - /* Union type. */ + /* Struct or union type. */ struct { VEC(tdesc_type_field) *fields; + LONGEST size; } u; + + /* Flags type. */ + struct + { + VEC(tdesc_type_flag) *flags; + LONGEST size; + } f; } u; } *tdesc_type_p; DEF_VEC_P(tdesc_type_p); @@ -652,6 +670,66 @@ tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) return type; } + case TDESC_TYPE_STRUCT: + { + struct type *type, *field_type; + struct tdesc_type_field *f; + int ix; + + type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); + TYPE_NAME (type) = xstrdup (tdesc_type->name); + TYPE_TAG_NAME (type) = TYPE_NAME (type); + + for (ix = 0; + VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); + ix++) + { + if (f->type == NULL) + { + /* Bitfield. */ + struct field *fld; + struct type *field_type; + int bitsize, total_size; + + /* This invariant should be preserved while creating + types. */ + gdb_assert (tdesc_type->u.u.size != 0); + if (tdesc_type->u.u.size > 4) + field_type = builtin_type (gdbarch)->builtin_uint64; + else + field_type = builtin_type (gdbarch)->builtin_uint32; + + fld = append_composite_type_field_raw (type, xstrdup (f->name), + field_type); + + /* For little-endian, BITPOS counts from the LSB of + the structure and marks the LSB of the field. For + big-endian, BITPOS counts from the MSB of the + structure and marks the MSB of the field. Either + way, it is the number of bits to the "left" of the + field. To calculate this in big-endian, we need + the total size of the structure. */ + bitsize = f->end - f->start + 1; + total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; + if (gdbarch_bits_big_endian (gdbarch)) + FIELD_BITPOS (fld[0]) = total_size - f->start - bitsize; + else + FIELD_BITPOS (fld[0]) = f->start; + FIELD_BITSIZE (fld[0]) = bitsize; + } + else + { + field_type = tdesc_gdb_type (gdbarch, f->type); + append_composite_type_field (type, xstrdup (f->name), + field_type); + } + } + + if (tdesc_type->u.u.size != 0) + TYPE_LENGTH (type) = tdesc_type->u.u.size; + return type; + } + case TDESC_TYPE_UNION: { struct type *type, *field_type; @@ -668,12 +746,30 @@ tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) field_type = tdesc_gdb_type (gdbarch, f->type); append_composite_type_field (type, xstrdup (f->name), field_type); - /* If any of the children of this union are vectors, flag the + /* If any of the children of a union are vectors, flag the union as a vector also. This allows e.g. a union of two vector types to show up automatically in "info vector". */ if (TYPE_VECTOR (field_type)) TYPE_VECTOR (type) = 1; } + return type; + } + + case TDESC_TYPE_FLAGS: + { + struct type *type, *field_type; + struct tdesc_type_flag *f; + int ix; + + type = arch_flags_type (gdbarch, xstrdup (tdesc_type->name), + tdesc_type->u.f.size); + for (ix = 0; + VEC_iterate (tdesc_type_flag, tdesc_type->u.f.flags, ix, f); + ix++) + /* Note that contrary to the function name, this call will + just set the properties of an already-allocated + field. */ + append_flags_type_flag (type, f->start, f->name); return type; } @@ -1161,6 +1257,7 @@ tdesc_free_type (struct tdesc_type *type) switch (type->kind) { + case TDESC_TYPE_STRUCT: case TDESC_TYPE_UNION: { struct tdesc_type_field *f; @@ -1175,6 +1272,20 @@ tdesc_free_type (struct tdesc_type *type) } break; + case TDESC_TYPE_FLAGS: + { + struct tdesc_type_flag *f; + int ix; + + for (ix = 0; + VEC_iterate (tdesc_type_flag, type->u.f.flags, ix, f); + ix++) + xfree (f->name); + + VEC_free (tdesc_type_flag, type->u.f.flags); + } + break; + default: break; } @@ -1199,6 +1310,29 @@ tdesc_create_vector (struct tdesc_feature *feature, const char *name, } struct tdesc_type * +tdesc_create_struct (struct tdesc_feature *feature, const char *name) +{ + struct tdesc_type *type = XZALLOC (struct tdesc_type); + + type->name = xstrdup (name); + type->kind = TDESC_TYPE_STRUCT; + + VEC_safe_push (tdesc_type_p, feature->types, type); + return type; +} + +/* Set the total length of TYPE. Structs which contain bitfields may + omit the reserved bits, so the end of the last field may not + suffice. */ + +void +tdesc_set_struct_size (struct tdesc_type *type, LONGEST size) +{ + gdb_assert (type->kind == TDESC_TYPE_STRUCT); + type->u.u.size = size; +} + +struct tdesc_type * tdesc_create_union (struct tdesc_feature *feature, const char *name) { struct tdesc_type *type = XZALLOC (struct tdesc_type); @@ -1210,13 +1344,32 @@ tdesc_create_union (struct tdesc_feature *feature, const char *name) return type; } +struct tdesc_type * +tdesc_create_flags (struct tdesc_feature *feature, const char *name, + LONGEST size) +{ + struct tdesc_type *type = XZALLOC (struct tdesc_type); + + type->name = xstrdup (name); + type->kind = TDESC_TYPE_FLAGS; + type->u.f.size = size; + + VEC_safe_push (tdesc_type_p, feature->types, type); + return type; +} + +/* Add a new field. Return a temporary pointer to the field, which + is only valid until the next call to tdesc_add_field (the vector + might be reallocated). */ + void tdesc_add_field (struct tdesc_type *type, const char *field_name, struct tdesc_type *field_type) { struct tdesc_type_field f = { 0 }; - gdb_assert (type->kind == TDESC_TYPE_UNION); + gdb_assert (type->kind == TDESC_TYPE_UNION + || type->kind == TDESC_TYPE_STRUCT); f.name = xstrdup (field_name); f.type = field_type; @@ -1224,6 +1377,37 @@ tdesc_add_field (struct tdesc_type *type, const char *field_name, VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); } +/* Add a new bitfield. */ + +void +tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, + int start, int end) +{ + struct tdesc_type_field f = { 0 }; + + gdb_assert (type->kind == TDESC_TYPE_STRUCT); + + f.name = xstrdup (field_name); + f.start = start; + f.end = end; + + VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); +} + +void +tdesc_add_flag (struct tdesc_type *type, int start, + const char *flag_name) +{ + struct tdesc_type_flag f = { 0 }; + + gdb_assert (type->kind == TDESC_TYPE_FLAGS); + + f.name = xstrdup (flag_name); + f.start = start; + + VEC_safe_push (tdesc_type_flag, type->u.f.flags, &f); +} + static void tdesc_free_feature (struct tdesc_feature *feature) { diff --git a/gdb/target-descriptions.h b/gdb/target-descriptions.h index da0564b556c..caa72302df1 100644 --- a/gdb/target-descriptions.h +++ b/gdb/target-descriptions.h @@ -205,10 +205,20 @@ struct tdesc_type *tdesc_create_vector (struct tdesc_feature *feature, const char *name, struct tdesc_type *field_type, int count); +struct tdesc_type *tdesc_create_struct (struct tdesc_feature *feature, + const char *name); +void tdesc_set_struct_size (struct tdesc_type *type, LONGEST size); struct tdesc_type *tdesc_create_union (struct tdesc_feature *feature, const char *name); +struct tdesc_type *tdesc_create_flags (struct tdesc_feature *feature, + const char *name, + LONGEST size); void tdesc_add_field (struct tdesc_type *type, const char *field_name, struct tdesc_type *field_type); +void tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, + int start, int end); +void tdesc_add_flag (struct tdesc_type *type, int start, + const char *flag_name); void tdesc_create_reg (struct tdesc_feature *feature, const char *name, int regnum, int save_restore, const char *group, int bitsize, const char *type); diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index fbc50a7404f..ae3a54833a6 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,10 @@ +2010-03-01 Daniel Jacobowitz <dan@codesourcery.com> + + * gdb.xml/extra-regs.xml: Add struct1, struct2, and flags + types. Add structreg, bitfields, and flags registers. + * gdb.xml/tdesc-regs.exp: Test structreg and bitfields + registers. + 2010-03-01 H.J. Lu <hongjiu.lu@intel.com> * gdb.xml/tdesc-regs.exp (architecture): New. Set it for x86. diff --git a/gdb/testsuite/gdb.xml/extra-regs.xml b/gdb/testsuite/gdb.xml/extra-regs.xml index 5db426bede2..f0db04e6bc6 100644 --- a/gdb/testsuite/gdb.xml/extra-regs.xml +++ b/gdb/testsuite/gdb.xml/extra-regs.xml @@ -8,9 +8,27 @@ <field name="v2" type="v2int16"/> </union> + <struct id="struct1"> + <field name="v4" type="v4int8"/> + <field name="v2" type="v2int16"/> + </struct> + + <struct id="struct2" size="8"> + <field name="f1" start="0" end="34"/> + <field name="f2" start="63" end="63"/> + </struct> + + <flags id="flags" size="4"> + <field name="X" start="0" end="0"/> + <field name="Y" start="2" end="2"/> + </flags> + <reg name="extrareg" bitsize="32"/> <reg name="uintreg" bitsize="32" type="uint32"/> <reg name="vecreg" bitsize="32" type="v4int8"/> <reg name="unionreg" bitsize="32" type="vecint"/> + <reg name="structreg" bitsize="64" type="struct1"/> + <reg name="bitfields" bitsize="64" type="struct2"/> + <reg name="flags" bitsize="32" type="flags"/> </feature> </target> diff --git a/gdb/testsuite/gdb.xml/tdesc-regs.exp b/gdb/testsuite/gdb.xml/tdesc-regs.exp index 8eae0bd1183..f37b2f3cb11 100644 --- a/gdb/testsuite/gdb.xml/tdesc-regs.exp +++ b/gdb/testsuite/gdb.xml/tdesc-regs.exp @@ -141,6 +141,11 @@ gdb_test "ptype \$vecreg" "type = int8_t \\\[4\\\]" gdb_test "ptype \$unionreg" \ "type = union {\r\n *v4int8 v4;\r\n *v2int16 v2;\r\n}" gdb_test "ptype \$unionreg.v4" "type = int8_t \\\[4\\\]" +gdb_test "ptype \$structreg" \ + "type = struct struct1 {\r\n *v4int8 v4;\r\n *v2int16 v2;\r\n}" +gdb_test "ptype \$structreg.v4" "type = int8_t \\\[4\\\]" +gdb_test "ptype \$bitfields" \ + "type = struct struct2 {\r\n *uint64_t f1 : 35;\r\n *uint64_t f2 : 1;\r\n}" load_description "core-only.xml" "" # The extra register from the previous description should be gone. diff --git a/gdb/xml-tdesc.c b/gdb/xml-tdesc.c index 90dacf6a854..1d78cad33cc 100644 --- a/gdb/xml-tdesc.c +++ b/gdb/xml-tdesc.c @@ -85,8 +85,15 @@ struct tdesc_parsing_data it does not have its own. This starts at zero. */ int next_regnum; - /* The union we are currently parsing, or last parsed. */ - struct tdesc_type *current_union; + /* The struct or union we are currently parsing, or last parsed. */ + struct tdesc_type *current_type; + + /* The byte size of the current struct type, if specified. Zero + if not specified. */ + int current_type_size; + + /* Whether the current type is a flags type. */ + int current_type_is_flags; }; /* Handle the end of an <architecture> element and its value. */ @@ -229,11 +236,57 @@ tdesc_start_union (struct gdb_xml_parser *parser, struct tdesc_parsing_data *data = user_data; char *id = VEC_index (gdb_xml_value_s, attributes, 0)->value; - data->current_union = tdesc_create_union (data->current_feature, id); + data->current_type = tdesc_create_union (data->current_feature, id); + data->current_type_size = 0; + data->current_type_is_flags = 0; +} + +/* Handle the start of a <struct> element. Initialize the type and + record it with the current feature. */ + +static void +tdesc_start_struct (struct gdb_xml_parser *parser, + const struct gdb_xml_element *element, + void *user_data, VEC(gdb_xml_value_s) *attributes) +{ + struct tdesc_parsing_data *data = user_data; + char *id = VEC_index (gdb_xml_value_s, attributes, 0)->value; + struct tdesc_type *type; + + type = tdesc_create_struct (data->current_feature, id); + data->current_type = type; + data->current_type_size = 0; + data->current_type_is_flags = 0; + + if (VEC_length (gdb_xml_value_s, attributes) > 1) + { + int size = (int) * (ULONGEST *) + VEC_index (gdb_xml_value_s, attributes, 1)->value; + tdesc_set_struct_size (type, size); + data->current_type_size = size; + } +} + +static void +tdesc_start_flags (struct gdb_xml_parser *parser, + const struct gdb_xml_element *element, + void *user_data, VEC(gdb_xml_value_s) *attributes) +{ + struct tdesc_parsing_data *data = user_data; + char *id = VEC_index (gdb_xml_value_s, attributes, 0)->value; + int length = (int) * (ULONGEST *) + VEC_index (gdb_xml_value_s, attributes, 1)->value; + struct tdesc_type *type; + + type = tdesc_create_flags (data->current_feature, id, length); + + data->current_type = type; + data->current_type_size = 0; + data->current_type_is_flags = 1; } /* Handle the start of a <field> element. Attach the field to the - current union. */ + current struct or union. */ static void tdesc_start_field (struct gdb_xml_parser *parser, @@ -241,20 +294,84 @@ tdesc_start_field (struct gdb_xml_parser *parser, void *user_data, VEC(gdb_xml_value_s) *attributes) { struct tdesc_parsing_data *data = user_data; + int ix = 0, length; struct gdb_xml_value *attrs = VEC_address (gdb_xml_value_s, attributes); struct tdesc_type *field_type; char *field_name, *field_type_id; + int start, end; - field_name = attrs[0].value; - field_type_id = attrs[1].value; + length = VEC_length (gdb_xml_value_s, attributes); - field_type = tdesc_named_type (data->current_feature, field_type_id); - if (field_type == NULL) - gdb_xml_error (parser, _("Union field \"%s\" references undefined " - "type \"%s\""), - field_name, field_type_id); + field_name = attrs[ix++].value; - tdesc_add_field (data->current_union, field_name, field_type); + if (ix < length && strcmp (attrs[ix].name, "type") == 0) + field_type_id = attrs[ix++].value; + else + field_type_id = NULL; + + if (ix < length && strcmp (attrs[ix].name, "start") == 0) + start = * (ULONGEST *) attrs[ix++].value; + else + start = -1; + + if (ix < length && strcmp (attrs[ix].name, "end") == 0) + end = * (ULONGEST *) attrs[ix++].value; + else + end = -1; + + if (field_type_id != NULL) + { + if (data->current_type_is_flags) + gdb_xml_error (parser, _("Cannot add typed field \"%s\" to flags"), + field_name); + if (data->current_type_size != 0) + gdb_xml_error (parser, + _("Explicitly sized type can not contain non-bitfield \"%s\""), + field_name); + + field_type = tdesc_named_type (data->current_feature, field_type_id); + if (field_type == NULL) + gdb_xml_error (parser, _("Field \"%s\" references undefined " + "type \"%s\""), + field_name, field_type_id); + + tdesc_add_field (data->current_type, field_name, field_type); + } + else if (start != -1 && end != -1) + { + struct tdesc_type *t = data->current_type; + + if (data->current_type_is_flags) + tdesc_add_flag (t, start, field_name); + else + { + if (data->current_type_size == 0) + gdb_xml_error (parser, + _("Implicitly sized type can not contain bitfield \"%s\""), + field_name); + + if (end >= 64) + gdb_xml_error (parser, + _("Bitfield \"%s\" goes past 64 bits (unsupported)"), + field_name); + + /* Assume that the bit numbering in XML is "lsb-zero". Most + architectures other than PowerPC use this ordering. In + the future, we can add an XML tag to indicate "msb-zero" + numbering. */ + if (start > end) + gdb_xml_error (parser, _("Bitfield \"%s\" has start after end"), + field_name); + + if (end >= data->current_type_size * TARGET_CHAR_BIT) + gdb_xml_error (parser, _("Bitfield \"%s\" does not fit in struct")); + + tdesc_add_bitfield (t, field_name, start, end); + } + } + else + gdb_xml_error (parser, _("Field \"%s\" has neither type nor bit position"), + field_name); } /* Handle the start of a <vector> element. Initialize the type and @@ -287,11 +404,13 @@ tdesc_start_vector (struct gdb_xml_parser *parser, static const struct gdb_xml_attribute field_attributes[] = { { "name", GDB_XML_AF_NONE, NULL, NULL }, - { "type", GDB_XML_AF_NONE, NULL, NULL }, + { "type", GDB_XML_AF_OPTIONAL, NULL, NULL }, + { "start", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, + { "end", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, { NULL, GDB_XML_AF_NONE, NULL, NULL } }; -static const struct gdb_xml_element union_children[] = { +static const struct gdb_xml_element struct_union_children[] = { { "field", field_attributes, NULL, GDB_XML_EF_REPEATABLE, tdesc_start_field, NULL }, { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } @@ -308,8 +427,15 @@ static const struct gdb_xml_attribute reg_attributes[] = { { NULL, GDB_XML_AF_NONE, NULL, NULL } }; -static const struct gdb_xml_attribute union_attributes[] = { +static const struct gdb_xml_attribute struct_union_attributes[] = { { "id", GDB_XML_AF_NONE, NULL, NULL }, + { "size", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL}, + { NULL, GDB_XML_AF_NONE, NULL, NULL } +}; + +static const struct gdb_xml_attribute flags_attributes[] = { + { "id", GDB_XML_AF_NONE, NULL, NULL }, + { "size", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL}, { NULL, GDB_XML_AF_NONE, NULL, NULL } }; @@ -329,9 +455,15 @@ static const struct gdb_xml_element feature_children[] = { { "reg", reg_attributes, NULL, GDB_XML_EF_OPTIONAL | GDB_XML_EF_REPEATABLE, tdesc_start_reg, NULL }, - { "union", union_attributes, union_children, + { "struct", struct_union_attributes, struct_union_children, + GDB_XML_EF_OPTIONAL | GDB_XML_EF_REPEATABLE, + tdesc_start_struct, NULL }, + { "union", struct_union_attributes, struct_union_children, GDB_XML_EF_OPTIONAL | GDB_XML_EF_REPEATABLE, tdesc_start_union, NULL }, + { "flags", flags_attributes, struct_union_children, + GDB_XML_EF_OPTIONAL | GDB_XML_EF_REPEATABLE, + tdesc_start_flags, NULL }, { "vector", vector_attributes, NULL, GDB_XML_EF_OPTIONAL | GDB_XML_EF_REPEATABLE, tdesc_start_vector, NULL }, |