+/* <apollo/dst.h> */
+/* Apollo object module DST (debug symbol table) description */
+
+#ifndef apollo_dst_h
+#define apollo_dst_h
+
+#if defined(apollo) && !defined(__GNUC__)
+#define ALIGNED1 __attribute( (aligned(1)) )
+#else
+/* Remove attribute directives from non-Apollo code: */
+#define ALIGNED1 /* nil */
+#endif
+
+
+
+/* Identification of this version of the debug symbol table. Producers of the
+ debug symbol table must write these values into the version number field of
+ the compilation unit record in .blocks .
+*/
+#define dst_version_major 1
+#define dst_version_minor 3
+
+
+/*
+** Enumeration of debug record types appearing in .blocks and .symbols ...
+*/
+typedef enum
+ {
+ dst_typ_pad, /* 0 */
+ dst_typ_comp_unit, /* 1 */
+ dst_typ_section_tab, /* 2 */
+ dst_typ_file_tab, /* 3 */
+ dst_typ_block, /* 4 */
+ dst_typ_5,
+ dst_typ_var,
+ dst_typ_pointer, /* 7 */
+ dst_typ_array, /* 8 */
+ dst_typ_subrange, /* 9 */
+ dst_typ_set, /* 10 */
+ dst_typ_implicit_enum, /* 11 */
+ dst_typ_explicit_enum, /* 12 */
+ dst_typ_short_rec, /* 13 */
+ dst_typ_old_record,
+ dst_typ_short_union, /* 15 */
+ dst_typ_old_union,
+ dst_typ_file, /* 17 */
+ dst_typ_offset, /* 18 */
+ dst_typ_alias, /* 19 */
+ dst_typ_signature, /* 20 */
+ dst_typ_21,
+ dst_typ_old_label, /* 22 */
+ dst_typ_scope, /* 23 */
+ dst_typ_end_scope, /* 24 */
+ dst_typ_25,
+ dst_typ_26,
+ dst_typ_string_tab, /* 27 */
+ dst_typ_global_name_tab, /* 28 */
+ dst_typ_forward, /* 29 */
+ dst_typ_aux_size, /* 30 */
+ dst_typ_aux_align, /* 31 */
+ dst_typ_aux_field_size, /* 32 */
+ dst_typ_aux_field_off, /* 33 */
+ dst_typ_aux_field_align, /* 34 */
+ dst_typ_aux_qual, /* 35 */
+ dst_typ_aux_var_bound, /* 36 */
+ dst_typ_extension, /* 37 */
+ dst_typ_string, /* 38 */
+ dst_typ_old_entry,
+ dst_typ_const, /* 40 */
+ dst_typ_reference, /* 41 */
+ dst_typ_record, /* 42 */
+ dst_typ_union, /* 43 */
+ dst_typ_aux_type_deriv, /* 44 */
+ dst_typ_locpool, /* 45 */
+ dst_typ_variable, /* 46 */
+ dst_typ_label, /* 47 */
+ dst_typ_entry, /* 48 */
+ dst_typ_aux_lifetime, /* 49 */
+ dst_typ_aux_ptr_base, /* 50 */
+ dst_typ_aux_src_range, /* 51 */
+ dst_typ_aux_reg_val, /* 52 */
+ dst_typ_aux_unit_names, /* 53 */
+ dst_typ_aux_sect_info, /* 54 */
+ dst_typ_END_OF_ENUM
+ }
+ dst_rec_type_t;
+
+
+/*
+** Dummy bounds for variably dimensioned arrays:
+*/
+#define dst_dummy_array_size 100
+
+
+/*
+** Reference to another item in the symbol table.
+**
+** The value of a dst_rel_offset_t is the relative offset from the start of the
+** referencing record to the start of the referenced record, string, etc.
+**
+** The value of a NIL dst_rel_offset_t is zero.
+*/
+
+typedef long dst_rel_offset_t ALIGNED1;
+
+
+/* FIXME: Here and many places we make assumptions about sizes of host
+ data types, structure layout, etc. Only needs to be fixed if we care
+ about cross-debugging, though. */
+
+/*
+** Section-relative reference.
+**
+** The section index field is an index into the local compilation unit's
+** section table (see dst_rec_section_tab_t)--NOT into the object module
+** section table!
+**
+** The sect_offset field is the offset in bytes into the section.
+**
+** A NIL dst_sect_ref_t has a sect_index field of zero. Indexes originate
+** at one.
+*/
+
+typedef struct
+ {
+ unsigned short sect_index;
+ unsigned long sect_offset ALIGNED1;
+ }
+ dst_sect_ref_t;
+
+#define dst_sect_index_nil 0
+#define dst_sect_index_origin 1
+
+
+/*
+** Source location descriptor.
+**
+** The file_index field is an index into the local compilation unit's
+** file table (see dst_rec_file_tab_t).
+**
+** A NIL dst_src_loc_t has a file_index field of zero. Indexes originate
+** at one.
+*/
+
+typedef struct
+ {
+ boolean reserved : 1; /* reserved for future use */
+ int file_index : 11; /* index into .blocks source file list */
+ int line_number : 20; /* source line number */
+ }
+ dst_src_loc_t;
+
+#define dst_file_index_nil 0
+#define dst_file_index_origin 1
+
+
+/*
+** Standard (primitive) type codes.
+*/
+
+typedef enum
+ {
+ dst_non_std_type,
+ dst_int8_type, /* 8 bit integer */
+ dst_int16_type, /* 16 bit integer */
+ dst_int32_type, /* 32 bit integer */
+ dst_uint8_type, /* 8 bit unsigned integer */
+ dst_uint16_type, /* 16 bit unsigned integer */
+ dst_uint32_type, /* 32 bit unsigned integer */
+ dst_real32_type, /* single precision ieee floatining point */
+ dst_real64_type, /* double precision ieee floatining point */
+ dst_complex_type, /* single precision complex */
+ dst_dcomplex_type, /* double precision complex */
+ dst_bool8_type, /* boolean =logical*1 */
+ dst_bool16_type, /* boolean =logical*2 */
+ dst_bool32_type, /* boolean =logical*4 */
+ dst_char_type, /* 8 bit ascii character */
+ dst_string_type, /* string of 8 bit ascii characters */
+ dst_ptr_type, /* univ_pointer */
+ dst_set_type, /* generic 256 bit set */
+ dst_proc_type, /* generic procedure (signature not specified) */
+ dst_func_type, /* generic function (signature not specified) */
+ dst_void_type, /* c void type */
+ dst_uchar_type, /* c unsigned char */
+ dst_std_type_END_OF_ENUM
+ }
+ dst_std_type_t;
+
+
+/*
+** General data type descriptor
+**
+** If the user_defined_type bit is clear, then the type is a standard type, and
+** the remaining bits contain the dst_std_type_t of the type. If the bit is
+** set, then the type is defined in a separate dst record, which is referenced
+** by the remaining bits as a dst_rel_offset_t.
+*/
+
+typedef union
+ {
+ struct
+ {
+ boolean user_defined_type : 1; /* tag field */
+ int must_be_zero : 23; /* 23 bits of pad */
+ dst_std_type_t dtc : 8; /* 8 bit primitive data */
+ }
+ std_type;
+
+ struct
+ {
+ boolean user_defined_type : 1; /* tag field */
+ int doffset : 31; /* offset to type record */
+ }
+ user_type;
+ }
+ dst_type_t ALIGNED1;
+
+/* The user_type.doffset field is a 31-bit signed value. Some versions of C
+ do not support signed bit fields. The following macro will extract that
+ field as a signed value:
+*/
+#define dst_user_type_offset(type_rec) \
+ ( ((int) ((type_rec).user_type.doffset << 1)) >> 1 )
+
+
+/*================================================*/
+/*========== RECORDS IN .blocks SECTION ==========*/
+/*================================================*/
+
+/*-----------------------
+ COMPILATION UNIT record
+ -----------------------
+ This must be the first record in each .blocks section.
+ Provides a set of information describing the output of a single compilation
+ and pointers to additional information for the compilation unit.
+*/
+
+typedef enum
+ {
+ dst_pc_code_locs, /* ranges in loc strings are pc ranges */
+ dst_comp_unit_END_OF_ENUM
+ }
+ dst_comp_unit_flag_t;
+
+typedef enum
+ {
+ dst_lang_unk, /* unknown language */
+ dst_lang_pas, /* Pascal */
+ dst_lang_ftn, /* FORTRAN */
+ dst_lang_c, /* C */
+ dst_lang_mod2, /* Modula-2 */
+ dst_lang_asm_m68k, /* 68K assembly language */
+ dst_lang_asm_a88k, /* AT assembly language */
+ dst_lang_ada, /* Ada */
+ dst_lang_cxx, /* C++ */
+ dst_lang_END_OF_ENUM
+ }
+ dst_lang_type_t;
+
+typedef struct
+ {
+ struct
+ {
+ unsigned char major_part; /* = dst_version_major */
+ unsigned char minor_part; /* = dst_version_minor */
+ }
+ version; /* version of dst */
+ unsigned short flags; /* mask of dst_comp_unit_flag_t */
+ unsigned short lang_type; /* source language */
+ unsigned short number_of_blocks; /* number of blocks records */
+ dst_rel_offset_t root_block_offset; /* offset to root block (module?) */
+ dst_rel_offset_t section_table /* offset to section table record */;
+ dst_rel_offset_t file_table; /* offset to file table record */
+ unsigned long data_size; /* total size of .blocks data */
+ }
+ dst_rec_comp_unit_t ALIGNED1;
+
+
+/*--------------------
+ SECTION TABLE record
+ --------------------
+ There must be one section table associated with each compilation unit.
+ Other debug records refer to sections via their index in this table. The
+ section base addresses in the table are virtual addresses of the sections,
+ relocated by the linker.
+*/
+
+typedef struct
+ {
+ unsigned short number_of_sections; /* size of array: */
+ unsigned long section_base[dst_dummy_array_size] ALIGNED1;
+ }
+ dst_rec_section_tab_t ALIGNED1;
+
+
+/*-----------------
+ FILE TABLE record
+ -----------------
+ There must be one file table associated with each compilation unit describing
+ the source (and include) files used by each compilation unit. Other debug
+ records refer to files via their index in this table. The first entry is the
+ primary source file.
+*/
+
+typedef struct
+ {
+ long dtm; /* time last modified (time_$clock_t) */
+ dst_rel_offset_t noffset; /* offset to name string for source file */
+ }
+ dst_file_desc_t;
+
+typedef struct
+ {
+ unsigned short number_of_files; /* size of array: */
+ dst_file_desc_t files[dst_dummy_array_size] ALIGNED1;
+ }
+ dst_rec_file_tab_t ALIGNED1;
+
+
+/*-----------------
+ NAME TABLE record
+ -----------------
+ A name table record may appear as an auxiliary record to the file table,
+ providing additional qualification of the file indexes for languages that
+ need it (i.e. Ada). Name table entries parallel file table entries of the
+ same file index.
+*/
+
+typedef struct
+ {
+ unsigned short number_of_names; /* size of array: */
+ dst_rel_offset_t names[dst_dummy_array_size] ALIGNED1;
+ }
+ dst_rec_name_tab_t ALIGNED1;
+
+
+/*--------------
+ BLOCK record
+ --------------
+ Describes a lexical program block--a procedure, function, module, etc.
+*/
+
+/* Block types. These may be used in any way desired by the compiler writers.
+ The debugger uses them only to give a description to the user of the type of
+ a block. The debugger makes no other assumptions about the meaning of any
+ of these. For example, the fact that a block is executable (e.g., program)
+ or not (e.g., module) is expressed in block attributes (see below), not
+ guessed at from the block type.
+*/
+typedef enum
+ {
+ dst_block_module, /* some pascal = modula = ada types */
+ dst_block_program,
+ dst_block_procedure,
+ dst_block_function, /* C function */
+ dst_block_subroutine, /* some fortran block types */
+ dst_block_block_data,
+ dst_block_stmt_function,
+ dst_block_package, /* a few particular to Ada */
+ dst_block_package_body,
+ dst_block_subunit,
+ dst_block_task,
+ dst_block_file, /* a C outer scope? */
+ dst_block_class, /* C++ or Simula */
+ dst_block_END_OF_ENUM
+ }
+ dst_block_type_t;
+
+/* Block attributes. This is the information used by the debugger to represent
+ the semantics of blocks.
+*/
+typedef enum
+ {
+ dst_block_main_entry, /* the block's entry point is a main entry into
+ the compilation unit */
+ dst_block_executable, /* the block has an entry point */
+ dst_block_attr_END_OF_ENUM
+ }
+ dst_block_attr_t;
+
+/* Code range. Each block has associated with it one or more code ranges. An
+ individual code range is identified by a range of source (possibly nil) and
+ a range of executable code. For example, a block which has its executable
+ code spread over multiple sections will have one code range per section.
+*/
+typedef struct
+ {
+ unsigned long code_size; /* size of executable code (in bytes ) */
+ dst_sect_ref_t code_start; /* starting address of executable code */
+ dst_sect_ref_t lines_start; /* start of line number tables */
+ }
+ dst_code_range_t;
+
+typedef struct
+ {
+ dst_block_type_t block_type : 8;
+ unsigned short flags : 8; /* mask of dst_block_attr_t flags */
+ dst_rel_offset_t sibling_block_off; /* offset to next sibling block */
+ dst_rel_offset_t child_block_off; /* offset to first contained block */
+ dst_rel_offset_t noffset; /* offset to block name string */
+ dst_sect_ref_t symbols_start; /* start of debug symbols */
+ unsigned short n_of_code_ranges; /* size of array... */
+ dst_code_range_t code_ranges[dst_dummy_array_size] ALIGNED1;
+ }
+ dst_rec_block_t ALIGNED1;
+
+
+/*--------------------------
+ AUX SECT INFO TABLE record
+ --------------------------
+ Appears as an auxiliary to a block record. Expands code range information
+ by providing references into additional, language-dependent sections for
+ information related to specific code ranges of the block. Sect info table
+ entries parallel code range array entries of the same index.
+*/
+
+typedef struct
+ {
+ unsigned char tag; /* currently can only be zero */
+ unsigned char number_of_refs; /* size of array: */
+ dst_sect_ref_t refs[dst_dummy_array_size] ALIGNED1;
+ }
+ dst_rec_sect_info_tab_t ALIGNED1;
+
+/*=================================================*/
+/*========== RECORDS IN .symbols SECTION ==========*/
+/*=================================================*/
+
+/*-----------------
+ CONSTANT record
+ -----------------
+ Describes a symbolic constant.
+*/
+
+typedef struct
+ {
+ float r; /* real part */
+ float i; /* imaginary part */
+ }
+ dst_complex_t;
+
+typedef struct
+ {
+ double dr; /* real part */
+ double di; /* imaginary part */
+ }
+ dst_double_complex_t;
+
+/* The following record provides a way of describing constant values with
+ non-standard type and no limit on size.
+*/
+typedef union
+ {
+ char char_data[dst_dummy_array_size];
+ short int_data [dst_dummy_array_size];
+ long long_data[dst_dummy_array_size];
+ }
+ dst_big_kon_t;
+
+/* Representation of the value of a general constant.
+*/
+typedef struct
+ {
+ unsigned short length; /* size of constant value (bytes) */
+
+ union
+ {
+ unsigned short kon_int8;
+ short kon_int16;
+ long kon_int32 ALIGNED1;
+ float kon_real ALIGNED1;
+ double kon_dbl ALIGNED1;
+ dst_complex_t kon_cplx ALIGNED1;
+ dst_double_complex_t kon_dcplx ALIGNED1;
+ char kon_char;
+ dst_big_kon_t kon ALIGNED1;
+ }
+ val; /* value data of constant */
+ }
+ dst_const_t ALIGNED1;
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of const definition */
+ dst_type_t type_desc; /* type of this (manifest) constant */
+ dst_const_t value;
+ }
+ dst_rec_const_t ALIGNED1;
+
+/*----------------
+ VARIABLE record
+ ----------------
+ Describes a program variable.
+*/
+
+/* Variable attributes. These define certain variable semantics to the
+ debugger.
+*/
+typedef enum
+ {
+ dst_var_attr_read_only, /* is read-only (a program literal) */
+ dst_var_attr_volatile, /* same as compiler's VOLATILE attribute */
+ dst_var_attr_global, /* is a global definition or reference */
+ dst_var_attr_compiler_gen, /* is compiler-generated */
+ dst_var_attr_static, /* has static location */
+ dst_var_attr_END_OF_ENUM
+ }
+ dst_var_attr_t;
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_rel_offset_t loffset; /* offset to loc string */
+ dst_src_loc_t src_loc; /* file/line of variable definition */
+ dst_type_t type_desc; /* type descriptor */
+ unsigned short attributes; /* mask of dst_var_attr_t flags */
+ }
+ dst_rec_variable_t ALIGNED1;
+
+
+/*----------------
+ old VAR record
+ -----------------
+ Used by older compilers to describe a variable
+*/
+
+typedef enum
+ {
+ dst_var_loc_unknown, /* Actually defined as "unknown" */
+ dst_var_loc_abs, /* Absolute address */
+ dst_var_loc_sect_off, /* Absolute address as a section offset */
+ dst_var_loc_ind_sect_off, /* An indexed section offset ???? */
+ dst_var_loc_reg, /* register */
+ dst_var_loc_reg_rel, /* register relative - usually fp */
+ dst_var_loc_ind_reg_rel, /* Indexed register relative */
+ dst_var_loc_ftn_ptr_based, /* Fortran pointer based */
+ dst_var_loc_pc_rel, /* PC relative. Really. */
+ dst_var_loc_external, /* External */
+ dst_var_loc_END_OF_ENUM
+ }
+ dst_var_loc_t;
+
+/* Locations come in two versions. The sort, and the long. The difference
+ * between the short and the long is the addition of a statement number
+ * field to the start andend of the range of the long, and and unkown
+ * purpose field in the middle. Also, loc_type and loc_index aren't
+ * bitfields in the long version.
+ */
+
+typedef struct
+ {
+ unsigned short loc_type : 4;
+ unsigned short loc_index : 12;
+ long location;
+ short start_line; /* start_line and end_line? */
+ short end_line; /* I'm guessing here. */
+ } dst_var_loc_short_t;
+
+typedef struct
+ {
+ unsigned short loc_type;
+ unsigned short loc_index;
+ long location;
+ short unknown; /* Always 0003 or 3b3c. Why? */
+ short start_statement;
+ short start_line;
+ short end_statement;
+ short end_line;
+ } dst_var_loc_long_t;
+
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of description */
+ dst_type_t type_desc; /* Type description */
+ unsigned short attributes; /* mask of dst_var_attr_t flags */
+ unsigned short no_of_locs : 15;/* Number of locations */
+ unsigned short short_locs : 1; /* True if short locations. */
+ union
+ {
+ dst_var_loc_short_t shorts[dst_dummy_array_size];
+ dst_var_loc_long_t longs[dst_dummy_array_size];
+ } locs;
+ } dst_rec_var_t;
+
+/*----------------
+ old LABEL record
+ -----------------
+ Used by older compilers to describe a label
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of description */
+ char location[12]; /* location string */
+ }
+ dst_rec_old_label_t ALIGNED1;
+
+/*----------------
+ POINTER record
+ ----------------
+ Describes a pointer type.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to the name string for this type */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ dst_type_t type_desc; /* base type of this pointer */
+ }
+ dst_rec_pointer_t ALIGNED1;
+
+
+/*-------------
+ ARRAY record
+ -------------
+ Describes an array type.
+
+ Multidimensional arrays are described with a number of dst_rec_array_t
+ records, one per array dimension, each linked to the next through the
+ elem_type_desc.doffset field. Each record must have its multi_dim flag
+ set.
+
+ If column_major is true (as with FORTRAN arrays) then the last array bound in
+ the declaration is the first array index in memory, which is the opposite of
+ the usual case (as with Pascal and C arrays).
+
+ Variable array bounds are described by auxiliary records; if aux_var_bound
+ records are present, the lo_bound and hi_bound fields of this record are
+ ignored by the debugger.
+
+ span_comp identifies one of the language-dependent ways in which the distance
+ between successive array elements (span) is calculated.
+ dst_use_span_field -- the span is the value of span field.
+ dst_compute_from_prev -- the span is the size of the previous dimension.
+ dst_compute_from_next -- the span is the size of the next dimension.
+ In the latter two cases, the span field contains an amount of padding to add
+ to the size of the appropriate dimension to calculate the span.
+*/
+
+typedef enum
+ {
+ dst_use_span_field,
+ dst_compute_from_prev,
+ dst_compute_from_next,
+ dst_span_comp_END_OF_ENUM
+ }
+ dst_span_comp_t;
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ dst_type_t elem_type_desc; /* array element type */
+ dst_type_t indx_type_desc; /* array index type */
+ long lo_bound; /* lower bound of index */
+ long hi_bound; /* upper bound of index */
+ unsigned long span; /* see above */
+ unsigned long size; /* total array size (bytes) */
+ boolean multi_dim : 1;
+ boolean is_packed : 1; /* true if packed array */
+ boolean is_signed : 1; /* true if packed elements are signed */
+ dst_span_comp_t span_comp : 2; /* how to compute span */
+ boolean column_major : 1;
+ unsigned short reserved : 2; /* must be zero */
+ unsigned short elem_size : 8; /* element size if packed (bits) */
+ }
+ dst_rec_array_t ALIGNED1;
+
+
+/*-----------------
+ SUBRANGE record
+ -----------------
+ Describes a subrange type.
+*/
+
+/* Variable subrange bounds are described by auxiliary records; if aux_var_bound
+ records are present, the lo_bound and hi_bound fields of this record are
+ ignored by the debugger.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of subrange definition */
+ dst_type_t type_desc; /* parent type */
+ long lo_bound; /* lower bound of subrange */
+ long hi_bound; /* upper bound of subrange */
+ unsigned short size; /* storage size (bytes) */
+ }
+ dst_rec_subrange_t ALIGNED1;
+
+
+/*---------------
+ STRING record
+ ---------------
+ Describes a string type.
+*/
+
+/* Variable subrange bounds are described by auxiliary records; if aux_var_bound
+ records are present, the lo_bound and hi_bound fields of this record are
+ ignored by the debugger.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of string definition */
+ dst_type_t elem_type_desc; /* element type */
+ dst_type_t indx_type_desc; /* index type */
+ long lo_bound; /* lower bound */
+ long hi_bound; /* upper bound */
+ unsigned long size; /* total string size (bytes) if fixed */
+ }
+ dst_rec_string_t ALIGNED1;
+
+
+/*---------------
+ SET record
+ ---------------
+ Describes a set type.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ dst_type_t type_desc; /* element type */
+ unsigned short nbits; /* number of bits in set */
+ unsigned short size; /* storage size (bytes) */
+ }
+ dst_rec_set_t ALIGNED1;
+
+
+/*-----------------------------
+ IMPLICIT ENUMERATION record
+ -----------------------------
+ Describes an enumeration type with implicit element values = 0, 1, 2, ...
+ (Pascal-style).
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ unsigned short nelems; /* number of elements in enumeration */
+ unsigned short size; /* storage size (bytes) */
+ /* offsets to name strings of elements 0, 1, 2, ... */
+ dst_rel_offset_t elem_noffsets[dst_dummy_array_size];
+ }
+ dst_rec_implicit_enum_t ALIGNED1;
+
+
+/*-----------------------------
+ EXPLICIT ENUMERATION record
+ -----------------------------
+ Describes an enumeration type with explicitly assigned element values
+ (C-style).
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to element name string */
+ long value; /* element value */
+ }
+ dst_enum_elem_t;
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ unsigned short nelems; /* number of elements in enumeration */
+ unsigned short size; /* storage size (bytes) */
+ /* name/value pairs, one describing each enumeration value: */
+ dst_enum_elem_t elems[dst_dummy_array_size];
+ }
+ dst_rec_explicit_enum_t ALIGNED1;
+
+
+/*-----------------------
+ RECORD / UNION record
+ -----------------------
+ Describes a record (struct) or union.
+
+ If the record is larger than 2**16 bytes then an attached aux record
+ specifies its size. Also, if the record is stored in short form then
+ attached records specify field offsets larger than 2**16 bytes.
+
+ Whether the fields[] array or sfields[] array is used is selected by
+ the dst_rec_type_t of the overall dst record.
+*/
+
+/*
+ Record field descriptor, short form. This form handles only fields which
+ are an even number of bytes long, located some number of bytes from the
+ start of the record.
+*/
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to field name string */
+ dst_type_t type_desc; /* field type */
+ unsigned short foffset; /* field offset from start of record (bytes) */
+ }
+ dst_short_field_t ALIGNED1;
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_type_t type_desc; /* field type */
+ unsigned short foffset; /* byte offset */
+ unsigned short is_packed : 1; /* True if field is packed */
+ unsigned short bit_offset : 6; /* Bit offset */
+ unsigned short size : 6; /* Size in bits */
+ unsigned short sign : 1; /* True if signed */
+ unsigned short pad : 2; /* Padding. Must be 0 */
+ }
+ dst_old_field_t ALIGNED1;
+
+/* Tag enumeration for long record field descriptor:
+*/
+typedef enum
+ {
+ dst_field_byte,
+ dst_field_bit,
+ dst_field_loc,
+ dst_field_END_OF_ENUM
+ }
+ dst_field_format_t;
+
+/*
+ Record field descriptor, long form. The format of the field information
+ is identified by the format_tag, which contains one of the above values.
+ The field_byte variant is equivalent to the short form of field descriptor.
+ The field_bit variant handles fields which are any number of bits long,
+ located some number of bits from the start of the record. The field_loc
+ variant allows the location of the field to be described by a general loc
+ string.
+*/
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name of field */
+ dst_type_t type_desc; /* type of field */
+ union
+ {
+ struct {
+ dst_field_format_t format_tag: 2; /* dst_field_byte */
+ unsigned long offset: 30; /* offset of field in bytes */
+ }
+ field_byte ALIGNED1;
+ struct {
+ dst_field_format_t format_tag: 2; /* dst_field_bit */
+ unsigned long nbits: 6; /* bit size of field */
+ unsigned long is_signed: 1; /* signed/unsigned attribute */
+ unsigned long bit_offset: 3; /* bit offset from byte boundary */
+ int pad: 4; /* must be zero */
+ unsigned short byte_offset; /* offset of byte boundary */
+ }
+ field_bit ALIGNED1;
+ struct {
+ dst_field_format_t format_tag: 2; /* dst_field_loc */
+ int loffset: 30; /* dst_rel_offset_t to loc string */
+ }
+ field_loc ALIGNED1;
+ }
+ f ALIGNED1;
+ }
+ dst_field_t;
+
+/* The field_loc.loffset field is a 30-bit signed value. Some versions of C do
+ not support signed bit fields. The following macro will extract that field
+ as a signed value:
+*/
+#define dst_field_loffset(field_rec) \
+ ( ((int) ((field_rec).f.field_loc.loffset << 2)) >> 2 )
+
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to record name string */
+ dst_src_loc_t src_loc; /* file/line where this record is defined */
+ unsigned short size; /* storage size (bytes) */
+ unsigned short nfields; /* number of fields in this record */
+ union
+ {
+ dst_field_t fields[dst_dummy_array_size];
+ dst_short_field_t sfields[dst_dummy_array_size];
+ dst_old_field_t ofields[dst_dummy_array_size];
+ }
+ f; /* array of fields */
+ }
+ dst_rec_record_t ALIGNED1;
+
+
+/*-------------
+ FILE record
+ -------------
+ Describes a file type.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line where type was defined */
+ dst_type_t type_desc; /* file element type */
+ }
+ dst_rec_file_t ALIGNED1;
+
+
+/*---------------
+ OFFSET record
+ ---------------
+ Describes a Pascal offset type.
+ (This type, an undocumented Domain Pascal extension, is currently not
+ supported by the debugger)
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to the name string */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ dst_type_t area_type_desc; /* area type */
+ dst_type_t base_type_desc; /* base type */
+ long lo_bound; /* low bound of the offset range */
+ long hi_bound; /* high bound of the offset range */
+ long bias; /* bias */
+ unsigned short scale; /* scale factor */
+ unsigned short size; /* storage size (bytes) */
+ }
+ dst_rec_offset_t ALIGNED1;
+
+
+/*--------------
+ ALIAS record
+ --------------
+ Describes a type alias (e.g., typedef).
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ dst_type_t type_desc; /* parent type */
+ }
+ dst_rec_alias_t ALIGNED1;
+
+
+/*------------------
+ SIGNATURE record
+ ------------------
+ Describes a procedure/function type.
+*/
+
+/* Enumeration of argument semantics. Note that most are mutually
+ exclusive.
+*/
+typedef enum
+ {
+ dst_arg_attr_val, /* passed by value */
+ dst_arg_attr_ref, /* passed by reference */
+ dst_arg_attr_name, /* passed by name */
+ dst_arg_attr_in, /* readable in the callee */
+ dst_arg_attr_out, /* writable in the callee */
+ dst_arg_attr_hidden, /* not visible in the caller */
+ dst_arg_attr_END_OF_ENUM
+ }
+ dst_arg_attr_t;
+
+/* Argument descriptor. Actually points to a variable record for most of the
+ information.
+*/
+typedef struct
+ {
+ dst_rel_offset_t var_offset; /* offset to variable record */
+ unsigned short attributes; /* a mask of dst_arg_attr_t flags */
+ }
+ dst_arg_t ALIGNED1;
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to name string */
+ dst_src_loc_t src_loc; /* file/line of function definition */
+ dst_rel_offset_t result; /* offset to function result variable record */
+ unsigned short nargs; /* number of arguments */
+ dst_arg_t args[dst_dummy_array_size];
+ }
+ dst_rec_signature_t ALIGNED1;
+
+/*--------------
+ SCOPE record
+ --------------
+ Obsolete. Use the new ENTRY type instead.
+ Old compilers may put this in as the first entry in a function,
+ terminated by an end of scope entry.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* Name offset */
+ dst_src_loc_t start_line; /* Starting line */
+ dst_src_loc_t end_line; /* Ending line */
+ }
+ dst_rec_scope_t ALIGNED1;
+
+/*--------------
+ ENTRY record
+ --------------
+ Describes a procedure/function entry point. An entry record is to a
+ signature record roughly as a variable record is to a type descriptor record.
+
+ The entry_number field is keyed to the entry numbers in .lines -- the
+ debugger locates the code location of an entry by searching the line
+ number table for an entry numbered with the value of entry_number. The
+ main entry is numbered zero.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to entry name string */
+ dst_rel_offset_t loffset; /* where to jump to call this entry */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ dst_rel_offset_t sig_desc; /* offset to signature descriptor */
+ unsigned int entry_number: 8;
+ int pad: 8; /* must be zero */
+ }
+ dst_rec_entry_t ALIGNED1;
+
+/*-----------------------
+ Old format ENTRY record
+ -----------------------
+ Supposedly obsolete but still used by some compilers.
+ */
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* Offset to entry name string */
+ dst_src_loc_t src_loc; /* Location in source */
+ dst_rel_offset_t sig_desc; /* Signature description */
+ char unknown[36];
+ }
+ dst_rec_old_entry_t ALIGNED1;
+
+/*--------------
+ LABEL record
+ --------------
+ Describes a program label.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t noffset; /* offset to label string */
+ dst_rel_offset_t loffset; /* offset to loc string */
+ dst_src_loc_t src_loc; /* file/line of definition */
+ }
+ dst_rec_label_t ALIGNED1;
+
+
+/*-----------------------
+ AUXILIARY SIZE record
+ -----------------------
+ May appear in the auxiliary record list of any type or variable record to
+ modify the default size of the type or variable.
+*/
+
+typedef struct
+ {
+ unsigned long size; /* size (bytes) */
+ }
+ dst_rec_aux_size_t ALIGNED1;
+
+
+/*-----------------------
+ AUXILIARY ALIGN record
+ -----------------------
+ May appear in the auxiliary record list of any type or variable record to
+ modify the default alignment of the type or variable.
+*/
+
+typedef struct
+ {
+ unsigned short alignment; /* # of low order zero bits */
+ }
+ dst_rec_aux_align_t ALIGNED1;
+
+
+/*-----------------------------
+ AUXILIARY FIELD SIZE record
+ -----------------------------
+ May appear in the auxiliary record list of any RECORD/UNION record to
+ modify the default size of a field.
+*/
+
+typedef struct
+ {
+ unsigned short field_no; /* field number */
+ unsigned long size; /* size (bits) */
+ }
+ dst_rec_aux_field_size_t ALIGNED1;
+
+
+
+/*-----------------------------
+ AUXILIARY FIELD OFFSET record
+ -----------------------------
+ May appear in the auxiliary record list of any RECORD/UNION record to
+ specify a field offset larger than 2**16.
+*/
+
+typedef struct
+ {
+ unsigned short field_no; /* field number */
+ unsigned long foffset; /* offset */
+ }
+ dst_rec_aux_field_off_t ALIGNED1;
+
+
+/*-----------------------------
+ AUXILIARY FIELD ALIGN record
+ -----------------------------
+ May appear in the auxiliary record list of any RECORD/UNION record to
+ modify the default alignment of a field.
+*/
+
+typedef struct
+ {
+ unsigned short field_no; /* field number */
+ unsigned short alignment; /* number of low order zero bits */
+ }
+ dst_rec_aux_field_align_t ALIGNED1;
+
+
+/*----------------------------
+ AUXILIARY VAR BOUND record
+ ----------------------------
+ May appear in the auxiliary record list of any ARRAY, SUBRANGE or STRING
+ record to describe a variable bound for the range of the type.
+*/
+
+typedef enum
+ {
+ dst_low_bound, /* the low bound is variable */
+ dst_high_bound, /* the high bound is variable */
+ dst_var_bound_END_OF_ENUM
+ }
+ dst_var_bound_t;
+
+typedef struct
+ {
+ unsigned short which; /* which bound */
+ dst_rel_offset_t voffset ALIGNED1; /* variable that defines bound */
+ }
+ dst_rec_aux_var_bound_t ALIGNED1;
+
+
+/*----------------------------------
+ AUXILIARY TYPE DERIVATION record
+ ----------------------------------
+ May appear in the auxiliary record list of any RECORD/UNION record to denote
+ class inheritance of that type from a parent type.
+
+ Inheritance implies that it is possible to convert the inheritor type to the
+ inherited type, retaining those fields which were inherited. To allow this,
+ orig_field_no, a field number into the record type, is provided. If
+ orig_is_pointer is false, then the start of the inherited record is located
+ at the location of the field indexed by orig_field_no. If orig_is_pointer
+ is true, then it is located at the address contained in the field indexed
+ by orig_field_no (assumed to be a pointer).
+*/
+
+typedef struct
+ {
+ dst_type_t parent_type; /* reference to inherited type */
+ unsigned short orig_field_no;
+ boolean orig_is_pointer: 1;
+ int unused: 15; /* must be zero */
+ }
+ dst_rec_aux_type_deriv_t ALIGNED1;
+
+
+/*------------------------------------
+ AUXILIARY VARIABLE LIFETIME record
+ ------------------------------------
+ May appear in the auxiliary record list of a VARIABLE record to add location
+ information for an additional variable lifetime.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t loffset;
+ }
+ dst_rec_aux_lifetime_t ALIGNED1;
+
+
+/*-------------------------------
+ AUXILIARY POINTER BASE record
+ -------------------------------
+ May appear in the auxiliary record list of a VARIABLE record to provide a
+ pointer base to substitute for references to any such bases in the location
+ string of the variable. A pointer base is another VARIABLE record. When
+ the variable is evaluated by the debugger, it uses the current value of the
+ pointer base variable in computing its location.
+
+ This is useful for representing FORTRAN pointer-based variables.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t voffset;
+ }
+ dst_rec_aux_ptr_base_t ALIGNED1;
+
+
+/*---------------------------------
+ AUXILIARY REGISTER VALUE record
+ ---------------------------------
+ May appear in the auxiliary record list of an ENTRY record to specify
+ a register that must be set to a specific value before jumping to the entry
+ point in a debugger "call". The debugger must set the debuggee register,
+ specified by the register code, to the value of the *address* to which the
+ location string resolves. If the address is register-relative, then the
+ call cannot be made unless the current stack frame is the lexical parent
+ of the entry. An example of this is when a (Pascal) nested procedure
+ contains references to its parent's variables, which it accesses through
+ a static link register. The static link register must be set to some
+ address relative to the parent's stack base register.
+*/
+
+typedef struct
+ {
+ unsigned short reg; /* identifies register to set (isp enum) */
+ dst_rel_offset_t loffset; /* references a location string */
+ }
+ dst_rec_aux_reg_val_t ALIGNED1;
+
+
+/*==========================================================*/
+/*========== RECORDS USED IN .blocks AND .symbols ==========*/
+/*==========================================================*/
+
+/*---------------------
+ STRING TABLE record
+ ---------------------
+ A string table record contains any number of null-terminated, variable length
+ strings. The length field gives the size in bytes of the text field, which
+ can be any size.
+
+ The global name table shares this format. This record appears in the
+ .blocks section. Each string in the table identifies a global defined in
+ the current compilation unit.
+
+ The loc pool record shares this format as well. Loc strings are described
+ elsewhere.
+*/
+
+typedef struct
+ {
+ unsigned long length;
+ char text[dst_dummy_array_size];
+ }
+ dst_rec_string_tab_t ALIGNED1;
+
+
+/*-----------------------
+ AUXILIARY QUAL record
+ -----------------------
+ May appear in the auxiliary record list of any BLOCK, VARIABLE, or type record
+ to provide it with a fully-qualified, language-dependent name.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t lang_qual_name;
+ }
+ dst_rec_aux_qual_t ALIGNED1;
+
+
+/*----------------
+ FORWARD record
+ ----------------
+ Reference to a record somewhere else. This allows identical definitions in
+ different scopes to share data.
+*/
+
+typedef struct
+ {
+ dst_rel_offset_t rec_off;
+ }
+ dst_rec_forward_t ALIGNED1;
+
+
+/*-------------------------------
+ AUXILIARY SOURCE RANGE record
+ -------------------------------
+ May appear in the auxiliary record list of any BLOCK record to specify a
+ range of source lines over which the block is active.
+*/
+
+typedef struct
+ {
+ dst_src_loc_t first_line; /* first source line */
+ dst_src_loc_t last_line; /* last source line */
+ }
+ dst_rec_aux_src_range_t ALIGNED1;
+
+
+/*------------------
+ EXTENSION record
+ ------------------
+ Provision for "foreign" records, such as might be generated by a non-Apollo
+ compiler. Apollo software will ignore these.
+*/
+
+typedef struct
+ {
+ unsigned short rec_size; /* record size (bytes) */
+ unsigned short ext_type; /* defined by whoever generates it */
+ unsigned short ext_data; /* place-holder for arbitrary amount of data */
+ }
+ dst_rec_extension_t ALIGNED1;
+
+
+/*
+** DEBUG SYMBOL record -- The wrapper for all .blocks and .symbols records.
+**
+** This record ties together all previous .blocks and .symbols records
+** together in a union with a common header. The rec_type field of the
+** header identifies the record type. The rec_flags field currently only
+** defines auxiliary record lists.
+**
+** If a record carries with it a non-null auxiliary record list, its
+** dst_flag_has_aux_recs flag is set, and each of the records that follow
+** it are treated as its auxiliary records, until the end of the compilation
+** unit or scope is reached, or until an auxiliary record with its
+** dst_flag_last_aux_rec flag set is reached.
+*/
+
+typedef enum
+ {
+ dst_flag_has_aux_recs,
+ dst_flag_last_aux_rec,
+ dst_rec_flag_END_OF_ENUM
+ }
+ dst_rec_flags_t;
+
+typedef struct
+ {
+ dst_rec_type_t rec_type : 8; /* record type */
+ int rec_flags: 8; /* mask of dst_rec_flags_t */
+ union /* switched on rec_type field above */
+ {
+ /* dst_typ_pad requires no additional fields */
+ dst_rec_comp_unit_t comp_unit_;
+ dst_rec_section_tab_t section_tab_;
+ dst_rec_file_tab_t file_tab_;
+ dst_rec_block_t block_;
+ dst_rec_var_t var_;
+ dst_rec_pointer_t pointer_;
+ dst_rec_array_t array_;
+ dst_rec_subrange_t subrange_;
+ dst_rec_set_t set_;
+ dst_rec_implicit_enum_t implicit_enum_;
+ dst_rec_explicit_enum_t explicit_enum_;
+ /* dst_typ_short_{rec,union} are represented by 'rec' (below) */
+ dst_rec_file_t file_;
+ dst_rec_offset_t offset_;
+ dst_rec_alias_t alias_;
+ dst_rec_signature_t signature_;
+ dst_rec_old_label_t old_label_;
+ dst_rec_scope_t scope_;
+ /* dst_typ_end_scope requires no additional fields */
+ dst_rec_string_tab_t string_tab_;
+ /* dst_typ_global_name_tab is represented by 'string_tab' (above) */
+ dst_rec_forward_t forward_;
+ dst_rec_aux_size_t aux_size_;
+ dst_rec_aux_align_t aux_align_;
+ dst_rec_aux_field_size_t aux_field_size_;
+ dst_rec_aux_field_off_t aux_field_off_;
+ dst_rec_aux_field_align_t aux_field_align_;
+ dst_rec_aux_qual_t aux_qual_;
+ dst_rec_aux_var_bound_t aux_var_bound_;
+ dst_rec_extension_t extension_;
+ dst_rec_string_t string_;
+ dst_rec_const_t const_;
+ /* dst_typ_reference is represented by 'pointer' (above) */
+ dst_rec_record_t record_;
+ /* dst_typ_union is represented by 'record' (above) */
+ dst_rec_aux_type_deriv_t aux_type_deriv_;
+ /* dst_typ_locpool is represented by 'string_tab' (above) */
+ dst_rec_variable_t variable_;
+ dst_rec_label_t label_;
+ dst_rec_entry_t entry_;
+ dst_rec_aux_lifetime_t aux_lifetime_;
+ dst_rec_aux_ptr_base_t aux_ptr_base_;
+ dst_rec_aux_src_range_t aux_src_range_;
+ dst_rec_aux_reg_val_t aux_reg_val_;
+ dst_rec_name_tab_t aux_unit_names_;
+ dst_rec_sect_info_tab_t aux_sect_info_;
+ }
+ rec_data ALIGNED1;
+ }
+ dst_rec_t, *dst_rec_ptr_t;
+
+
+/*===============================================*/
+/*========== .lines SECTION DEFINITIONS =========*/
+/*===============================================*/
+/*
+ The .lines section contains a sequence of line number tables. There is no
+ record structure within the section. The start of the table for a routine
+ is pointed to by the block record, and the end of the table is signaled by
+ an escape code.
+
+ A line number table is a sequence of bytes. The default entry contains a line
+ number delta (-7..+7) in the high 4 bits and a pc delta (0..15) in the low 4
+ bits. Special cases, including when one or both of the values is too large
+ to fit in 4 bits and other special cases are handled through escape entries.
+ Escape entries are identified by the value 0x8 in the high 4 bits. The low 4
+ bits are occupied by a function code. Some escape entries are followed by
+ additional arguments, which may be bytes, words, or longwords. This data is
+ not aligned.
+
+ The initial PC offset, file number and line number are zero. Normally, the
+ table begins with a dst_ln_file escape which establishes the initial file
+ and line number. All PC deltas are unsigned (thus the table is ordered by
+ increasing PC); line number deltas are signed. The table ends with a
+ dst_ln_end escape, which is followed by a final table entry whose PC delta
+ gives the code size of the last statement.
+
+ Escape Semantic
+ --------- ------------------------------------------------------------
+ file Changes file state. The current source file remains constant
+ until another file escape. Though the line number state is
+ also updated by a file escape, a file escape does NOT
+ constitute a line table entry.
+
+ statement Alters the statement number of the next table entry. By
+ default, all table entries refer to the first statement on a
+ line. Statement number one is the second statement, and so on.
+
+ entry Identifies the next table entry as the position of an entry
+ point for the current block. The PC position should follow
+ any procedure prologue code. An argument specifies the entry
+ number, which is keyed to the entry number of the corresponding
+ .symbols ENTRY record.
+
+ exit Identifies the next table entry as the last position within
+ the current block before a procedure epiloge and subsequent
+ procedure exit.
+
+ gap By default, the executable code corresponding to a table entry
+ is assumed to extend to the beginning of the next table entry.
+ If this is not the case--there is a "hole" in the table--then
+ a gap escape should follow the first table entry to specify
+ where the code for that entry ends.
+*/
+
+#define dst_ln_escape_flag -8
+
+/*
+ Escape function codes:
+*/
+typedef enum
+ {
+ dst_ln_pad, /* pad byte */
+ dst_ln_file, /* file escape. Next 4 bytes are a dst_src_loc_t */
+ dst_ln_dln1_dpc1, /* 1 byte line delta, 1 byte pc delta */
+ dst_ln_dln2_dpc2, /* 2 bytes line delta, 2 bytes pc delta */
+ dst_ln_ln4_pc4, /* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */
+ dst_ln_dln1_dpc0, /* 1 byte line delta, pc delta = 0 */
+ dst_ln_ln_off_1, /* statement escape, stmt # = 1 (2nd stmt on line) */
+ dst_ln_ln_off, /* statement escape, stmt # = next byte */
+ dst_ln_entry, /* entry escape, next byte is entry number */
+ dst_ln_exit, /* exit escape */
+ dst_ln_stmt_end, /* gap escape, 4 bytes pc delta */
+ dst_ln_escape_11, /* reserved */
+ dst_ln_escape_12, /* reserved */
+ dst_ln_escape_13, /* reserved */
+ dst_ln_nxt_byte, /* next byte contains the real escape code */
+ dst_ln_end, /* end escape, final entry follows */
+ dst_ln_escape_END_OF_ENUM
+ }
+ dst_ln_escape_t;
+
+/*
+ Line number table entry
+*/
+typedef union
+ {
+ struct
+ {
+ unsigned int ln_delta : 4; /* 4 bit line number delta */
+ unsigned int pc_delta : 4; /* 4 bit pc delta */
+ }
+ delta;
+
+ struct
+ {
+ unsigned int esc_flag : 4; /* alias for ln_delta */
+ dst_ln_escape_t esc_code : 4; /* escape function code */
+ }
+ esc;
+
+ char sdata; /* signed data byte */
+ unsigned char udata; /* unsigned data byte */
+ }
+ dst_ln_entry_t,
+ *dst_ln_entry_ptr_t,
+ dst_ln_table_t[dst_dummy_array_size];
+
+/* The following macro will extract the ln_delta field as a signed value:
+*/
+#define dst_ln_ln_delta(ln_rec) \
+ ( ((short) ((ln_rec).delta.ln_delta << 12)) >> 12 )
+
+
+
+
+typedef struct dst_sec_struct {
+ char *buffer;
+ long position;
+ long size;
+ long base;
+} dst_sec;
+
+
+/* Macros for access to the data */
+
+#define DST_comp_unit(x) ((x)->rec_data.comp_unit_)
+#define DST_section_tab(x) ((x)->rec_data.section_tab_)
+#define DST_file_tab(x) ((x)->rec_data.file_tab_)
+#define DST_block(x) ((x)->rec_data.block_)
+#define DST_var(x) ((x)->rec_data.var_)
+#define DST_pointer(x) ((x)->rec_data.pointer_)
+#define DST_array(x) ((x)->rec_data.array_)
+#define DST_subrange(x) ((x)->rec_data.subrange_)
+#define DST_set(x) ((x)->rec_data.set_)
+#define DST_implicit_enum(x) ((x)->rec_data.implicit_enum_)
+#define DST_explicit_enum(x) ((x)->rec_data.explicit_enum_)
+#define DST_short_rec(x) ((x)->rec_data.record_)
+#define DST_short_union(x) ((x)->rec_data.record_)
+#define DST_file(x) ((x)->rec_data.file_)
+#define DST_offset(x) ((x)->rec_data.offset_)
+#define DST_alias(x) ((x)->rec_data.alias_)
+#define DST_signature(x) ((x)->rec_data.signature_)
+#define DST_old_label(x) ((x)->rec_data.old_label_)
+#define DST_scope(x) ((x)->rec_data.scope_)
+#define DST_string_tab(x) ((x)->rec_data.string_tab_)
+#define DST_global_name_tab(x) ((x)->rec_data.string_tab_)
+#define DST_forward(x) ((x)->rec_data.forward_)
+#define DST_aux_size(x) ((x)->rec_data.aux_size_)
+#define DST_aux_align(x) ((x)->rec_data.aux_align_)
+#define DST_aux_field_size(x) ((x)->rec_data.aux_field_size_)
+#define DST_aux_field_off(x) ((x)->rec_data.aux_field_off_)
+#define DST_aux_field_align(x) ((x)->rec_data.aux_field_align_)
+#define DST_aux_qual(x) ((x)->rec_data.aux_qual_)
+#define DST_aux_var_bound(x) ((x)->rec_data.aux_var_bound_)
+#define DST_extension(x) ((x)->rec_data.extension_)
+#define DST_string(x) ((x)->rec_data.string_)
+#define DST_const(x) ((x)->rec_data.const_)
+#define DST_reference(x) ((x)->rec_data.pointer_)
+#define DST_record(x) ((x)->rec_data.record_)
+#define DST_union(x) ((x)->rec_data.record_)
+#define DST_aux_type_deriv(x) ((x)->rec_data.aux_type_deriv_)
+#define DST_locpool(x) ((x)->rec_data.string_tab_)
+#define DST_variable(x) ((x)->rec_data.variable_)
+#define DST_label(x) ((x)->rec_data.label_)
+#define DST_entry(x) ((x)->rec_data.entry_)
+#define DST_aux_lifetime(x) ((x)->rec_data.aux_lifetime_)
+#define DST_aux_ptr_base(x) ((x)->rec_data.aux_ptr_base_)
+#define DST_aux_src_range(x) ((x)->rec_data.aux_src_range_)
+#define DST_aux_reg_val(x) ((x)->rec_data.aux_reg_val_)
+#define DST_aux_unit_names(x) ((x)->rec_data.aux_unit_names_)
+#define DST_aux_sect_info(x) ((x)->rec_data.aux_sect_info_)
+
+
+/*
+ * Type codes for loc strings. I'm not entirely certain about all of
+ * these, but they seem to work.
+ * troy@cbme.unsw.EDU.AU
+ * If you find a variable whose location can't be decoded, you should
+ * find out it's code using "dstdump -s filename". It will record an
+ * entry for the variable, and give a text representation of what
+ * the locstring means. Before that explaination there will be a
+ * number. In the LOCSTRING table, that number will appear before
+ * the start of the location string. Location string codes are
+ * five bit codes with a 3 bit argument. Check the high 5 bits of
+ * the one byte code, and figure out where it goes in here.
+ * Then figure out exactly what the meaning is and code it in
+ * dstread.c
+ *
+ * Note that ranged locs mean that the variable is in different locations
+ * depending on the current PC. We ignore these because (a) gcc can't handle
+ * them, and (b), If you don't use high levels of optimisation they won't
+ * occur.
+ */
+typedef enum
+{
+ dst_lsc_end, /* End of string */
+ dst_lsc_indirect, /* Indirect through previous. Arg == 6 */
+ /* Or register ax (x=arg) */
+ dst_lsc_dreg, /* register dx (x=arg) */
+ dst_lsc_03,
+ dst_lsc_section, /* Section (arg+1) */
+ dst_lsc_05,
+ dst_lsc_06,
+ dst_lsc_add, /* Add (arg+1)*2 */
+ dst_lsc_sub, /* Subtract (arg+1)*2 */
+ dst_lsc_09,
+ dst_lsc_0a,
+ dst_lsc_sec_byte, /* Section of next byte+1 */
+ dst_lsc_add_byte, /* Add next byte (arg == 5) or next word
+ * (arg == 6)
+ */
+ dst_lsc_sub_byte, /* Subtract next byte. (arg == 1) or next
+ * word (arg == 6 ?)
+ */
+ dst_lsc_sbreg, /* Stack base register (frame pointer). Arg==0*/
+ dst_lsc_0f,
+ dst_lsc_ranged, /* location is pc dependent */
+ dst_lsc_11,
+ dst_lsc_12,
+ dst_lsc_13,
+ dst_lsc_14,
+ dst_lsc_15,
+ dst_lsc_16,
+ dst_lsc_17,
+ dst_lsc_18,
+ dst_lsc_19,
+ dst_lsc_1a,
+ dst_lsc_1b,
+ dst_lsc_1c,
+ dst_lsc_1d,
+ dst_lsc_1e,
+ dst_lsc_1f
+} dst_loc_string_code_t;
+
+/* If the following occurs after an addition/subtraction, that addition
+ * or subtraction should be multiplied by 256. It's a complete byte, not
+ * a code.
+ */
+
+#define dst_multiply_256 ((char) 0x73)
+
+typedef struct
+{
+ char code : 5;
+ char arg : 3;
+} dst_loc_header_t ALIGNED1;
+
+typedef union
+{
+ dst_loc_header_t header;
+ char data;
+} dst_loc_entry_t ALIGNED1;
+
+#undef ALIGNED1
+#endif /* apollo_dst_h */
+/* Read apollo DST symbol tables and convert to internal format, for GDB.
+ Contributed by Troy Rollo, University of NSW (troy@cbme.unsw.edu.au).
+ Copyright 1993 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+\f
+#include "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "breakpoint.h"
+#include "bfd.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include <obstack.h>
+
+#include <string.h>
+
+#include "dst.h"
+
+CORE_ADDR cur_src_start_addr, cur_src_end_addr;
+dst_sec blocks_info, lines_info, symbols_info;
+
+/* Vector of line number information. */
+
+static struct linetable *line_vector;
+
+/* Index of next entry to go in line_vector_index. */
+
+static int line_vector_index;
+
+/* Last line number recorded in the line vector. */
+
+static int prev_line_number;
+
+/* Number of elements allocated for line_vector currently. */
+
+static int line_vector_length;
+
+struct pending_block *pending_blocks;
+
+static struct blockvector *
+make_blockvector PARAMS ((struct objfile *));
+
+static int
+init_dst_sections PARAMS ((int));
+
+static void
+read_dst_symtab PARAMS ((struct objfile *));
+
+static void
+find_dst_sections PARAMS ((bfd *, sec_ptr, PTR));
+
+static void
+dst_symfile_init PARAMS ((struct objfile *));
+
+static void
+dst_new_init PARAMS ((struct objfile *));
+
+static void
+dst_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int));
+
+static void
+dst_symfile_finish PARAMS ((struct objfile *));
+
+static void
+record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type));
+
+static void
+dst_end_symtab PARAMS ((struct objfile *));
+
+static void
+complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int));
+
+static void
+dst_start_symtab PARAMS ((void));
+
+static void
+dst_record_line PARAMS ((int, CORE_ADDR));
+
+static struct blockvector *
+make_blockvector (objfile)
+ struct objfile *objfile;
+{
+ register struct pending_block *next, *next1;
+ register struct blockvector *blockvector;
+ register int i;
+
+ /* Count the length of the list of blocks. */
+
+ for (next = pending_blocks, i = 0; next; next = next->next, i++);
+
+ blockvector = (struct blockvector *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector) + (i - 1) * sizeof (struct block *));
+
+ /* Copy the blocks into the blockvector.
+ This is done in reverse order, which happens to put
+ the blocks into the proper order (ascending starting address).
+ */
+
+ BLOCKVECTOR_NBLOCKS (blockvector) = i;
+ for (next = pending_blocks; next; next = next->next)
+ BLOCKVECTOR_BLOCK (blockvector, --i) = next->block;
+
+ /* Now free the links of the list, and empty the list. */
+
+ for (next = pending_blocks; next; next = next1)
+ {
+ next1 = next->next;
+ free ((PTR)next);
+ }
+ pending_blocks = 0;
+
+ return blockvector;
+}
+
+/* Manage the vector of line numbers. */
+/* FIXME: Use record_line instead. */
+
+static void
+dst_record_line (line, pc)
+ int line;
+ CORE_ADDR pc;
+{
+ struct linetable_entry *e;
+ /* Make sure line vector is big enough. */
+
+ if (line_vector_index + 2 >= line_vector_length)
+ {
+ line_vector_length *= 2;
+ line_vector = (struct linetable *)
+ xrealloc ((char *) line_vector, sizeof (struct linetable)
+ + (line_vector_length
+ * sizeof (struct linetable_entry)));
+ }
+
+ e = line_vector->item + line_vector_index++;
+ e->line = line; e->pc = pc;
+}
+\f
+/* Start a new symtab for a new source file.
+ It indicates the start of data for one original source file. */
+/* FIXME: use start_symtab, like coffread.c now does. */
+
+static void
+dst_start_symtab ()
+{
+ /* Initialize the source file line number information for this file. */
+
+ if (line_vector) /* Unlikely, but maybe possible? */
+ free ((PTR)line_vector);
+ line_vector_index = 0;
+ line_vector_length = 1000;
+ prev_line_number = -2; /* Force first line number to be explicit */
+ line_vector = (struct linetable *)
+ xmalloc (sizeof (struct linetable)
+ + line_vector_length * sizeof (struct linetable_entry));
+}
+
+/* Save the vital information from when starting to read a file,
+ for use when closing off the current file.
+ NAME is the file name the symbols came from, START_ADDR is the first
+ text address for the file, and SIZE is the number of bytes of text. */
+
+static void
+complete_symtab (name, start_addr, size)
+ char *name;
+ CORE_ADDR start_addr;
+ unsigned int size;
+{
+ last_source_file = savestring (name, strlen (name));
+ cur_src_start_addr = start_addr;
+ cur_src_end_addr = start_addr + size;
+
+ if (current_objfile -> ei.entry_point >= cur_src_start_addr &&
+ current_objfile -> ei.entry_point < cur_src_end_addr)
+ {
+ current_objfile -> ei.entry_file_lowpc = cur_src_start_addr;
+ current_objfile -> ei.entry_file_highpc = cur_src_end_addr;
+ }
+}
+
+/* Finish the symbol definitions for one main source file,
+ close off all the lexical contexts for that file
+ (creating struct block's for them), then make the
+ struct symtab for that file and put it in the list of all such. */
+/* FIXME: Use end_symtab, like coffread.c now does. */
+
+static void
+dst_end_symtab (objfile)
+ struct objfile *objfile;
+{
+ register struct symtab *symtab;
+ register struct blockvector *blockvector;
+ register struct linetable *lv;
+
+ /* Create the blockvector that points to all the file's blocks. */
+
+ blockvector = make_blockvector (objfile);
+
+ /* Now create the symtab object for this source file. */
+ symtab = allocate_symtab (last_source_file, objfile);
+
+ /* Fill in its components. */
+ symtab->blockvector = blockvector;
+ symtab->free_code = free_linetable;
+ symtab->free_ptr = 0;
+ symtab->filename = last_source_file;
+ symtab->dirname = NULL;
+ lv = line_vector;
+ lv->nitems = line_vector_index;
+ symtab->linetable = (struct linetable *)
+ xrealloc ((char *) lv, (sizeof (struct linetable)
+ + lv->nitems * sizeof (struct linetable_entry)));
+
+ free_named_symtabs (symtab->filename);
+
+ /* Reinitialize for beginning of new file. */
+ line_vector = 0;
+ line_vector_length = -1;
+ last_source_file = NULL;
+}
+\f
+static void
+record_minimal_symbol (name, address, type)
+ char *name;
+ CORE_ADDR address;
+ enum minimal_symbol_type type;
+{
+ prim_record_minimal_symbol (savestring (name, strlen (name)),
+ address,
+ type);
+}
+\f
+/* dst_symfile_init ()
+ is the dst-specific initialization routine for reading symbols.
+
+ We will only be called if this is a DST or DST-like file.
+ BFD handles figuring out the format of the file, and code in symtab.c
+ uses BFD's determination to vector to us.
+
+ The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */
+
+static void
+dst_symfile_init (objfile)
+ struct objfile *objfile;
+{
+ asection *section;
+ bfd *abfd = objfile->obfd;
+
+ init_entry_point_info (objfile);
+
+}
+
+/* This function is called for every section; it finds the outer limits
+ of the line table (minimum and maximum file offset) so that the
+ mainline code can read the whole thing for efficiency. */
+
+/* ARGSUSED */
+static void
+find_dst_sections (abfd, asect, vpinfo)
+ bfd *abfd;
+ sec_ptr asect;
+ PTR vpinfo;
+{
+ int size, count;
+ long base;
+ file_ptr offset, maxoff;
+ dst_sec *section;
+
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ size = asect->_raw_size;
+ offset = asect->filepos;
+ base = asect->vma;
+/* End of warning */
+
+ section = NULL;
+ if (!strcmp(asect->name, ".blocks"))
+ section = &blocks_info;
+ else if (!strcmp(asect->name, ".lines"))
+ section = &lines_info;
+ else if (!strcmp(asect->name, ".symbols"))
+ section = &symbols_info;
+ if (!section)
+ return;
+ section->size = size;
+ section->position = offset;
+ section->base = base;
+}
+
+
+/* The BFD for this file -- only good while we're actively reading
+ symbols into a psymtab or a symtab. */
+
+static bfd *symfile_bfd;
+
+/* Read a symbol file, after initialization by dst_symfile_init. */
+/* FIXME! Addr and Mainline are not used yet -- this will not work for
+ shared libraries or add_file! */
+
+/* ARGSUSED */
+static void
+dst_symfile_read (objfile, section_offsets, mainline)
+ struct objfile *objfile;
+ struct section_offsets *section_offsets;
+ int mainline;
+{
+ bfd *abfd = objfile->obfd;
+ char *name = bfd_get_filename (abfd);
+ int desc;
+ register int val;
+ int num_symbols;
+ int symtab_offset;
+ int stringtab_offset;
+
+ symfile_bfd = abfd; /* Kludge for swap routines */
+
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ desc = fileno ((FILE *)(abfd->iostream)); /* File descriptor */
+
+ /* Read the line number table, all at once. */
+ bfd_map_over_sections (abfd, find_dst_sections, (PTR)NULL);
+
+ val = init_dst_sections (desc);
+ if (val < 0)
+ error ("\"%s\": error reading debugging symbol tables\n", name);
+
+ init_minimal_symbol_collection ();
+ make_cleanup (discard_minimal_symbols, 0);
+
+ /* Now that the executable file is positioned at symbol table,
+ process it and define symbols accordingly. */
+
+ read_dst_symtab (objfile);
+
+ /* Sort symbols alphabetically within each block. */
+
+ sort_all_symtab_syms ();
+
+ /* Install any minimal symbols that have been collected as the current
+ minimal symbols for this objfile. */
+
+ install_minimal_symbols (objfile);
+}
+
+static void
+dst_new_init (ignore)
+ struct objfile *ignore;
+{
+ /* Nothin' to do */
+}
+
+/* Perform any local cleanups required when we are done with a particular
+ objfile. I.E, we are in the process of discarding all symbol information
+ for an objfile, freeing up all memory held for it, and unlinking the
+ objfile struct from the global list of known objfiles. */
+
+static void
+dst_symfile_finish (objfile)
+ struct objfile *objfile;
+{
+ /* Nothing to do */
+}
+
+\f
+/* Get the next line number from the DST. Returns 0 when we hit an
+ * end directive or cannot continue for any other reason.
+ *
+ * Note that ordinary pc deltas are multiplied by two. Apparently
+ * this is what was really intended.
+ */
+static int
+get_dst_line(buffer, pc)
+ signed char **buffer;
+ long *pc;
+{
+ static last_pc = 0;
+ static long last_line = 0;
+ static int last_file = 0;
+ dst_ln_entry_ptr_t entry;
+ int size;
+ dst_src_loc_t *src_loc;
+
+ if (*pc != -1)
+ {
+ last_pc = *pc;
+ *pc = -1;
+ }
+ entry = (dst_ln_entry_ptr_t) *buffer;
+
+ while (dst_ln_ln_delta(*entry) == dst_ln_escape_flag)
+ {
+ switch(entry->esc.esc_code)
+ {
+ case dst_ln_pad:
+ size = 1; /* pad byte */
+ break;
+ case dst_ln_file:
+ /* file escape. Next 4 bytes are a dst_src_loc_t */
+ size = 5;
+ src_loc = (dst_src_loc_t *) (*buffer + 1);
+ last_line = src_loc->line_number;
+ last_file = src_loc->file_index;
+ break;
+ case dst_ln_dln1_dpc1:
+ /* 1 byte line delta, 1 byte pc delta */
+ last_line += (*buffer)[1];
+ last_pc += 2 * (unsigned char) (*buffer)[2];
+ dst_record_line(last_line, last_pc);
+ size = 3;
+ break;
+ case dst_ln_dln2_dpc2:
+ /* 2 bytes line delta, 2 bytes pc delta */
+ last_line += *(short *) (*buffer + 1);
+ last_pc += 2 * (*(short *) (*buffer + 3));
+ size = 5;
+ dst_record_line(last_line, last_pc);
+ break;
+ case dst_ln_ln4_pc4:
+ /* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */
+ last_line = *(unsigned long *) (*buffer + 1);
+ last_pc = *(unsigned long *) (*buffer + 5);
+ size = 9;
+ dst_record_line(last_line, last_pc);
+ break;
+ case dst_ln_dln1_dpc0:
+ /* 1 byte line delta, pc delta = 0 */
+ size = 2;
+ last_line+= (*buffer)[1];
+ break;
+ case dst_ln_ln_off_1:
+ /* statement escape, stmt # = 1 (2nd stmt on line) */
+ size = 1;
+ break;
+ case dst_ln_ln_off:
+ /* statement escape, stmt # = next byte */
+ size = 2;
+ break;
+ case dst_ln_entry:
+ /* entry escape, next byte is entry number */
+ size = 2;
+ break;
+ case dst_ln_exit:
+ /* exit escape */
+ size = 1;
+ break;
+ case dst_ln_stmt_end:
+ /* gap escape, 4 bytes pc delta */
+ size = 5;
+ /* last_pc += 2 * (*(long *) (*buffer + 1)); */
+ /* Apparently this isn't supposed to actually modify
+ * the pc value. Totally weird.
+ */
+ break;
+ case dst_ln_escape_11:
+ case dst_ln_escape_12:
+ case dst_ln_escape_13:
+ size = 1;
+ break;
+ case dst_ln_nxt_byte:
+ /* This shouldn't happen. If it does, we're SOL */
+ return 0;
+ break;
+ case dst_ln_end:
+ /* end escape, final entry follows */
+ return 0;
+ }
+ *buffer += (size < 0) ? -size : size;
+ entry = (dst_ln_entry_ptr_t) *buffer;
+ }
+ last_line += dst_ln_ln_delta(*entry);
+ last_pc += entry->delta.pc_delta * 2;
+ (*buffer)++;
+ dst_record_line(last_line, last_pc);
+ return 1;
+}
+
+static void
+enter_all_lines(buffer, address)
+ char *buffer;
+ long address;
+{
+ if (buffer)
+ while (get_dst_line(&buffer, &address));
+}
+
+static int
+get_dst_entry(buffer, ret_entry)
+ char *buffer;
+ dst_rec_ptr_t *ret_entry;
+{
+ int size;
+ dst_rec_ptr_t entry;
+ static int last_type;
+ int ar_size;
+ static unsigned lu3;
+
+ entry = (dst_rec_ptr_t) buffer;
+ switch(entry->rec_type)
+ {
+ case dst_typ_pad:
+ size = 0;
+ break;
+ case dst_typ_comp_unit:
+ size = sizeof(DST_comp_unit(entry));
+ break;
+ case dst_typ_section_tab:
+ size = sizeof(DST_section_tab(entry))
+ + ((int) DST_section_tab(entry).number_of_sections
+ - dst_dummy_array_size) * sizeof(long);
+ break;
+ case dst_typ_file_tab:
+ size = sizeof(DST_file_tab(entry))
+ + ((int) DST_file_tab(entry).number_of_files
+ - dst_dummy_array_size) * sizeof(dst_file_desc_t);
+ break;
+ case dst_typ_block:
+ size = sizeof(DST_block(entry))
+ + ((int) DST_block(entry).n_of_code_ranges
+ - dst_dummy_array_size) * sizeof(dst_code_range_t);
+ break;
+ case dst_typ_5:
+ size = -1;
+ break;
+ case dst_typ_var:
+ size = sizeof(DST_var(entry)) -
+ sizeof(dst_var_loc_long_t) * dst_dummy_array_size +
+ DST_var(entry).no_of_locs *
+ ( DST_var(entry).short_locs ?
+ sizeof(dst_var_loc_short_t):
+ sizeof(dst_var_loc_long_t));
+ break;
+ case dst_typ_pointer:
+ size = sizeof(DST_pointer(entry));
+ break;
+ case dst_typ_array:
+ size = sizeof(DST_array(entry));
+ break;
+ case dst_typ_subrange:
+ size = sizeof(DST_subrange(entry));
+ break;
+ case dst_typ_set:
+ size = sizeof(DST_set(entry));
+ break;
+ case dst_typ_implicit_enum:
+ size = sizeof(DST_implicit_enum(entry))
+ + ((int) DST_implicit_enum(entry).nelems
+ - dst_dummy_array_size) * sizeof(dst_rel_offset_t);
+ break;
+ case dst_typ_explicit_enum:
+ size = sizeof(DST_explicit_enum(entry))
+ + ((int) DST_explicit_enum(entry).nelems
+ - dst_dummy_array_size) * sizeof(dst_enum_elem_t);
+ break;
+ case dst_typ_short_rec:
+ size = sizeof(DST_short_rec(entry))
+ + DST_short_rec(entry).nfields * sizeof(dst_short_field_t)
+ - dst_dummy_array_size * sizeof(dst_field_t);
+ break;
+ case dst_typ_short_union:
+ size = sizeof(DST_short_union(entry))
+ + DST_short_union(entry).nfields * sizeof(dst_short_field_t)
+ - dst_dummy_array_size * sizeof(dst_field_t);
+ break;
+ case dst_typ_file:
+ size = sizeof(DST_file(entry));
+ break;
+ case dst_typ_offset:
+ size = sizeof(DST_offset(entry));
+ break;
+ case dst_typ_alias:
+ size = sizeof(DST_alias(entry));
+ break;
+ case dst_typ_signature:
+ size = sizeof(DST_signature(entry)) +
+ ((int) DST_signature(entry).nargs -
+ dst_dummy_array_size) * sizeof(dst_arg_t);
+ break;
+ case dst_typ_21:
+ size = -1;
+ break;
+ case dst_typ_old_label:
+ size = sizeof(DST_old_label(entry));
+ break;
+ case dst_typ_scope:
+ size = sizeof(DST_scope(entry));
+ break;
+ case dst_typ_end_scope:
+ size = 0;
+ break;
+ case dst_typ_25:
+ case dst_typ_26:
+ size = -1;
+ break;
+ case dst_typ_string_tab:
+ case dst_typ_global_name_tab:
+ size = sizeof(DST_string_tab(entry))
+ + DST_string_tab(entry).length
+ - dst_dummy_array_size;
+ break;
+ case dst_typ_forward:
+ size = sizeof(DST_forward(entry));
+ get_dst_entry((char *) entry + DST_forward(entry).rec_off, &entry);
+ break;
+ case dst_typ_aux_size:
+ size = sizeof(DST_aux_size(entry));
+ break;
+ case dst_typ_aux_align:
+ size = sizeof(DST_aux_align(entry));
+ break;
+ case dst_typ_aux_field_size:
+ size = sizeof(DST_aux_field_size(entry));
+ break;
+ case dst_typ_aux_field_off:
+ size = sizeof(DST_aux_field_off(entry));
+ break;
+ case dst_typ_aux_field_align:
+ size = sizeof(DST_aux_field_align(entry));
+ break;
+ case dst_typ_aux_qual:
+ size = sizeof(DST_aux_qual(entry));
+ break;
+ case dst_typ_aux_var_bound:
+ size = sizeof(DST_aux_var_bound(entry));
+ break;
+ case dst_typ_extension:
+ size = DST_extension(entry).rec_size;
+ break;
+ case dst_typ_string:
+ size = sizeof(DST_string(entry));
+ break;
+ case dst_typ_old_entry:
+ size = 48; /* Obsolete entry type */
+ break;
+ case dst_typ_const:
+ size = sizeof(DST_const(entry))
+ + DST_const(entry).value.length
+ - sizeof(DST_const(entry).value.val);
+ break;
+ case dst_typ_reference:
+ size = sizeof(DST_reference(entry));
+ break;
+ case dst_typ_old_record:
+ case dst_typ_old_union:
+ case dst_typ_record:
+ case dst_typ_union:
+ size = sizeof(DST_record(entry))
+ + ((int) DST_record(entry).nfields
+ - dst_dummy_array_size) * sizeof(dst_field_t);
+ break;
+ case dst_typ_aux_type_deriv:
+ size = sizeof(DST_aux_type_deriv(entry));
+ break;
+ case dst_typ_locpool:
+ size = sizeof(DST_locpool(entry))
+ + ((int) DST_locpool(entry).length -
+ dst_dummy_array_size);
+ break;
+ case dst_typ_variable:
+ size = sizeof(DST_variable(entry));
+ break;
+ case dst_typ_label:
+ size = sizeof(DST_label(entry));
+ break;
+ case dst_typ_entry:
+ size = sizeof(DST_entry(entry));
+ break;
+ case dst_typ_aux_lifetime:
+ size = sizeof(DST_aux_lifetime(entry));
+ break;
+ case dst_typ_aux_ptr_base:
+ size = sizeof(DST_aux_ptr_base(entry));
+ break;
+ case dst_typ_aux_src_range:
+ size = sizeof(DST_aux_src_range(entry));
+ break;
+ case dst_typ_aux_reg_val:
+ size = sizeof(DST_aux_reg_val(entry));
+ break;
+ case dst_typ_aux_unit_names:
+ size = sizeof(DST_aux_unit_names(entry))
+ + ((int) DST_aux_unit_names(entry).number_of_names
+ - dst_dummy_array_size) * sizeof(dst_rel_offset_t);
+ break;
+ case dst_typ_aux_sect_info:
+ size = sizeof(DST_aux_sect_info(entry))
+ + ((int) DST_aux_sect_info(entry).number_of_refs
+ - dst_dummy_array_size) * sizeof(dst_sect_ref_t);
+ break;
+ default:
+ size = -1;
+ break;
+ }
+ if (size == -1)
+ {
+ fprintf(stderr, "Warning: unexpected DST entry type (%d) found\nLast valid entry was of type: %d\n",
+ (int) entry->rec_type,
+ last_type);
+ fprintf(stderr, "Last unknown_3 value: %d\n", lu3);
+ size = 0;
+ }
+ else
+ last_type = entry->rec_type;
+ if (size & 1) /* Align on a word boundary */
+ size++;
+ size += 2;
+ *ret_entry = entry;
+ return size;
+}
+
+static int next_dst_entry(buffer, entry, table)
+ char **buffer;
+ dst_rec_ptr_t *entry;
+ dst_sec *table;
+{
+ if (*buffer - table->buffer >= table->size)
+ {
+ *entry = NULL;
+ return 0;
+ }
+ *buffer += get_dst_entry(*buffer, entry);
+ return 1;
+}
+
+#define NEXT_BLK(a, b) next_dst_entry(a, b, &blocks_info)
+#define NEXT_SYM(a, b) next_dst_entry(a, b, &symbols_info)
+#define DST_OFFSET(a, b) ((char *) (a) + (b))
+
+static dst_rec_ptr_t section_table = NULL;
+
+char *
+get_sec_ref(ref)
+ dst_sect_ref_t *ref;
+{
+ dst_sec *section = NULL;
+ long offset;
+
+ if (!section_table || !ref->sect_index)
+ return NULL;
+ offset = DST_section_tab(section_table).section_base[ref->sect_index-1]
+ + ref->sect_offset;
+ if (offset >= blocks_info.base &&
+ offset < blocks_info.base + blocks_info.size)
+ section = &blocks_info;
+ else if (offset >= symbols_info.base &&
+ offset < symbols_info.base + symbols_info.size)
+ section = &symbols_info;
+ else if (offset >= lines_info.base &&
+ offset < lines_info.base + lines_info.size)
+ section = &lines_info;
+ if (!section)
+ return NULL;
+ return section->buffer + (offset - section->base);
+}
+
+CORE_ADDR
+dst_get_addr(int section, long offset)
+{
+ if (!section_table || !section)
+ return 0;
+ return DST_section_tab(section_table).section_base[section-1] + offset;
+}
+
+CORE_ADDR
+dst_sym_addr(ref)
+ dst_sect_ref_t *ref;
+{
+ if (!section_table || !ref->sect_index)
+ return 0;
+ return DST_section_tab(section_table).section_base[ref->sect_index-1]
+ + ref->sect_offset;
+}
+
+static struct type *
+create_new_type(objfile)
+ struct objfile *objfile;
+{
+ struct type *type;
+
+ type = (struct type *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct type));
+ memset(type, 0, sizeof(struct type));
+ return type;
+}
+
+static struct symbol *
+create_new_symbol(objfile, name)
+ struct objfile *objfile;
+ char *name;
+{
+ struct symbol *sym = (struct symbol *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack,
+ name, strlen (name));
+ SYMBOL_VALUE (sym) = 0;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+
+ SYMBOL_CLASS (sym) = LOC_BLOCK;
+ return sym;
+};
+
+static struct type *
+decode_dst_type PARAMS ((struct objfile *, dst_rec_ptr_t));
+
+static struct type *
+decode_type_desc(objfile, type_desc, base)
+ struct objfile *objfile;
+ dst_type_t *type_desc;
+ dst_rec_ptr_t base;
+{
+ struct type *type;
+ dst_rec_ptr_t entry;
+ if (type_desc->std_type.user_defined_type)
+ {
+ entry = (dst_rec_ptr_t) DST_OFFSET(base,
+ dst_user_type_offset(*type_desc));
+ type = decode_dst_type(objfile, entry);
+ }
+ else
+ {
+ switch(type_desc->std_type.dtc)
+ {
+ case dst_int8_type:
+ type = builtin_type_signed_char;
+ break;
+ case dst_int16_type:
+ type = builtin_type_short;
+ break;
+ case dst_int32_type:
+ type = builtin_type_long;
+ break;
+ case dst_uint8_type:
+ type = builtin_type_unsigned_char;
+ break;
+ case dst_uint16_type:
+ type = builtin_type_unsigned_short;
+ break;
+ case dst_uint32_type:
+ type = builtin_type_unsigned_long;
+ break;
+ case dst_real32_type:
+ type = builtin_type_float;
+ break;
+ case dst_real64_type:
+ type = builtin_type_double;
+ break;
+ case dst_complex_type:
+ type = builtin_type_complex;
+ break;
+ case dst_dcomplex_type:
+ type = builtin_type_double_complex;
+ break;
+ case dst_bool8_type:
+ type = builtin_type_char;
+ break;
+ case dst_bool16_type:
+ type = builtin_type_short;
+ break;
+ case dst_bool32_type:
+ type = builtin_type_long;
+ break;
+ case dst_char_type:
+ type = builtin_type_char;
+ break;
+ /* The next few are more complex. I will take care
+ * of them properly at a later point.
+ */
+ case dst_string_type:
+ type = builtin_type_void;
+ break;
+ case dst_ptr_type:
+ type = builtin_type_void;
+ break;
+ case dst_set_type:
+ type = builtin_type_void;
+ break;
+ case dst_proc_type:
+ type = builtin_type_void;
+ break;
+ case dst_func_type:
+ type = builtin_type_void;
+ break;
+ /* Back tto some ordinary ones */
+ case dst_void_type:
+ type = builtin_type_void;
+ break;
+ case dst_uchar_type:
+ type = builtin_type_unsigned_char;
+ break;
+ default:
+ type = builtin_type_void;
+ break;
+ }
+ }
+ return type;
+}
+
+struct structure_list
+ {
+ struct structure_list *next;
+ struct type *type;
+ };
+
+static struct structure_list *struct_list = NULL;
+
+static struct type *
+find_dst_structure(name)
+ char *name;
+{
+ struct structure_list *element;
+
+ for (element = struct_list; element; element = element->next)
+ if (!strcmp(name, TYPE_NAME(element->type)))
+ return element->type;
+ return NULL;
+}
+
+
+static struct type *
+decode_dst_structure(objfile, entry, code, version)
+ struct objfile *objfile;
+ dst_rec_ptr_t entry;
+ int code;
+ int version;
+{
+ struct type *type, *child_type;
+ char *struct_name;
+ char *name, *field_name;
+ int i;
+ int fieldoffset, fieldsize;
+ dst_type_t type_desc;
+ struct structure_list *element;
+
+ struct_name = DST_OFFSET(entry, DST_record(entry).noffset);
+ name = concat( (code == TYPE_CODE_UNION)?"union ":"struct ",
+ struct_name, NULL);
+ type = find_dst_structure(name);
+ if (type)
+ {
+ free((PTR) name);
+ return type;
+ }
+ type = create_new_type(objfile);
+ TYPE_NAME(type) = obstack_copy0 (&objfile->symbol_obstack,
+ name, strlen(name));
+ free((PTR) name);
+ TYPE_CODE(type) = code;
+ TYPE_LENGTH(type) = DST_record(entry).size;
+ TYPE_NFIELDS(type) = DST_record(entry).nfields;
+ TYPE_FIELDS(type) = (struct field *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct field) *
+ DST_record(entry).nfields);
+ fieldoffset = fieldsize = 0;
+ INIT_CPLUS_SPECIFIC(type);
+ element = (struct structure_list *)
+ xmalloc(sizeof(struct structure_list));
+ element->type = type;
+ element->next = struct_list;
+ struct_list = element;
+ for (i = 0; i < DST_record(entry).nfields; i++)
+ {
+ switch (version)
+ {
+ case 2:
+ field_name = DST_OFFSET(entry,
+ DST_record(entry).f.ofields[i].noffset);
+ fieldoffset = DST_record(entry).f.ofields[i].foffset*8 +
+ DST_record(entry).f.ofields[i].bit_offset;
+ fieldsize = DST_record(entry).f.ofields[i].size;
+ type_desc = DST_record(entry).f.ofields[i].type_desc;
+ break;
+ case 1:
+ field_name = DST_OFFSET(entry,
+ DST_record(entry).f.fields[i].noffset);
+ type_desc = DST_record(entry).f.fields[i].type_desc;
+ switch(DST_record(entry).f.fields[i].f.field_loc.format_tag)
+ {
+ case dst_field_byte:
+ fieldoffset = DST_record(entry).f.
+ fields[i].f.field_byte.offset * 8;
+ fieldsize = -1;
+ break;
+ case dst_field_bit:
+ fieldoffset = DST_record(entry).f.
+ fields[i].f.field_bit.byte_offset * 8 +
+ DST_record(entry).f.
+ fields[i].f.field_bit.bit_offset;
+ fieldsize = DST_record(entry).f.
+ fields[i].f.field_bit.nbits;
+ break;
+ case dst_field_loc:
+ fieldoffset += fieldsize;
+ fieldsize = -1;
+ break;
+ }
+ break;
+ case 0:
+ field_name = DST_OFFSET(entry,
+ DST_record(entry).f.sfields[i].noffset);
+ fieldoffset = DST_record(entry).f.sfields[i].foffset;
+ type_desc = DST_record(entry).f.sfields[i].type_desc;
+ if (i < DST_record(entry).nfields - 1)
+ fieldsize = DST_record(entry).f.sfields[i+1].foffset;
+ else
+ fieldsize = DST_record(entry).size;
+ fieldsize -= fieldoffset;
+ fieldoffset *= 8;
+ fieldsize *= 8;
+ }
+ TYPE_FIELDS(type)[i].name =
+ obstack_copy0 (&objfile->symbol_obstack,
+ field_name, strlen(field_name));
+ TYPE_FIELDS(type)[i].type = decode_type_desc(objfile,
+ &type_desc,
+ entry);
+ if (fieldsize == -1)
+ fieldsize = TYPE_LENGTH(TYPE_FIELDS(type)[i].type) *
+ 8;
+ TYPE_FIELDS(type)[i].bitsize = fieldsize;
+ TYPE_FIELDS(type)[i].bitpos = fieldoffset;
+ }
+ return type;
+}
+
+static struct type *
+decode_dst_type(objfile, entry)
+ struct objfile *objfile;
+ dst_rec_ptr_t entry;
+{
+ struct type *child_type, *type, *range_type, *index_type;
+
+ switch(entry->rec_type)
+ {
+ case dst_typ_var:
+ return decode_type_desc(objfile,
+ &DST_var(entry).type_desc,
+ entry);
+ break;
+ case dst_typ_variable:
+ return decode_type_desc(objfile,
+ &DST_variable(entry).type_desc,
+ entry);
+ break;
+ case dst_typ_short_rec:
+ return decode_dst_structure(objfile, entry, TYPE_CODE_STRUCT,0);
+ case dst_typ_short_union:
+ return decode_dst_structure(objfile, entry, TYPE_CODE_UNION, 0);
+ case dst_typ_union:
+ return decode_dst_structure(objfile, entry, TYPE_CODE_UNION, 1);
+ case dst_typ_record:
+ return decode_dst_structure(objfile, entry, TYPE_CODE_STRUCT,1);
+ case dst_typ_old_union:
+ return decode_dst_structure(objfile, entry, TYPE_CODE_UNION, 2);
+ case dst_typ_old_record:
+ return decode_dst_structure(objfile, entry, TYPE_CODE_STRUCT,2);
+ case dst_typ_pointer:
+ return make_pointer_type(
+ decode_type_desc(objfile,
+ &DST_pointer(entry).type_desc,
+ entry),
+ NULL);
+ case dst_typ_array:
+ child_type = decode_type_desc(objfile,
+ &DST_pointer(entry).type_desc,
+ entry);
+ index_type = lookup_fundamental_type(objfile,
+ FT_INTEGER);
+ range_type = create_range_type ((struct type *) NULL,
+ index_type, DST_array(entry).lo_bound,
+ DST_array(entry).hi_bound);
+ return create_array_type ((struct type *) NULL, child_type,
+ range_type);
+ case dst_typ_alias:
+ return decode_type_desc(objfile,
+ &DST_alias(entry).type_desc,
+ entry);
+ default:
+ return builtin_type_int;
+ }
+}
+
+struct symbol_list {
+ struct symbol_list *next;
+ struct symbol *symbol;
+};
+
+static struct symbol_list *dst_global_symbols = NULL;
+static int total_globals = 0;
+
+static void
+decode_dst_locstring(locstr, sym)
+ char *locstr;
+ struct symbol *sym;
+{
+ dst_loc_entry_t *entry, *next_entry;
+ CORE_ADDR temp;
+ int count = 0;
+
+ while(1)
+ {
+ if (count++ == 100)
+ {
+ fprintf(stderr, "Error reading locstring\n");
+ break;
+ }
+ entry = (dst_loc_entry_t *) locstr;
+ next_entry = (dst_loc_entry_t *) (locstr + 1);
+ switch (entry->header.code)
+ {
+ case dst_lsc_end: /* End of string */
+ return;
+ case dst_lsc_indirect:/* Indirect through previous. Arg == 6 */
+ /* Or register ax x == arg */
+ if (entry->header.arg < 6)
+ {
+ SYMBOL_CLASS(sym) = LOC_REGISTER;
+ SYMBOL_VALUE(sym) = entry->header.arg + 8;
+ }
+ /* We predict indirects */
+ locstr++;
+ break;
+ case dst_lsc_dreg:
+ SYMBOL_CLASS(sym) = LOC_REGISTER;
+ SYMBOL_VALUE(sym) = entry->header.arg;
+ locstr++;
+ break;
+ case dst_lsc_section:/* Section (arg+1) */
+ SYMBOL_VALUE(sym) = dst_get_addr(entry->header.arg+1, 0);
+ locstr++;
+ break;
+ case dst_lsc_sec_byte: /* Section (next_byte+1) */
+ SYMBOL_VALUE(sym) = dst_get_addr(locstr[1]+1, 0);
+ locstr+=2;
+ break;
+ case dst_lsc_add: /* Add (arg+1)*2 */
+ case dst_lsc_sub: /* Subtract (arg+1)*2 */
+ temp = (entry->header.arg + 1) * 2;
+ locstr++;
+ if (*locstr == dst_multiply_256)
+ {
+ temp <<= 8;
+ locstr++;
+ }
+ switch(entry->header.code)
+ {
+ case dst_lsc_add:
+ if (SYMBOL_CLASS(sym) == LOC_LOCAL)
+ SYMBOL_CLASS(sym) = LOC_ARG;
+ SYMBOL_VALUE(sym) += temp;
+ break;
+ case dst_lsc_sub:
+ SYMBOL_VALUE(sym) -= temp;
+ break;
+ }
+ break;
+ case dst_lsc_add_byte:
+ case dst_lsc_sub_byte:
+ switch (entry->header.arg & 0x03)
+ {
+ case 1:
+ temp = (unsigned char) locstr[1];
+ locstr += 2;
+ break;
+ case 2:
+ temp = * (unsigned short *) (locstr + 1);
+ locstr += 3;
+ break;
+ case 3:
+ temp = * (unsigned long *) (locstr + 1);
+ locstr += 5;
+ break;
+ }
+ if (*locstr == dst_multiply_256)
+ {
+ temp <<= 8;
+ locstr++;
+ }
+ switch(entry->header.code)
+ {
+ case dst_lsc_add_byte:
+ if (SYMBOL_CLASS(sym) == LOC_LOCAL)
+ SYMBOL_CLASS(sym) = LOC_ARG;
+ SYMBOL_VALUE(sym) += temp;
+ break;
+ case dst_lsc_sub_byte:
+ SYMBOL_VALUE(sym) -= temp;
+ break;
+ }
+ break;
+ case dst_lsc_sbreg: /* Stack base register (frame pointer). Arg==0*/
+ if (next_entry->header.code != dst_lsc_indirect)
+ {
+ SYMBOL_VALUE(sym) = 0;
+ SYMBOL_CLASS(sym) = LOC_STATIC;
+ return;
+ }
+ SYMBOL_VALUE(sym) = 0;
+ SYMBOL_CLASS(sym) = LOC_LOCAL;
+ locstr++;
+ break;
+ default:
+ SYMBOL_VALUE(sym) = 0;
+ SYMBOL_CLASS(sym) = LOC_STATIC;
+ return;
+ }
+ }
+}
+
+static struct symbol_list *
+process_dst_symbols(objfile, entry, name, nsyms_ret)
+ struct objfile *objfile;
+ dst_rec_ptr_t entry;
+ char *name;
+ int *nsyms_ret;
+{
+ struct symbol_list *list = NULL, *element;
+ struct symbol *sym;
+ char *symname;
+ int nsyms = 0;
+ char *location;
+ long line;
+ dst_type_t symtype;
+ struct type *type;
+ dst_var_attr_t attr;
+ dst_var_loc_t loc_type;
+ unsigned loc_index;
+ long loc_value;
+
+ if (!entry)
+ {
+ *nsyms_ret = 0;
+ return NULL;
+ }
+ location = (char *) entry;
+ while (NEXT_SYM(&location, &entry) &&
+ entry->rec_type != dst_typ_end_scope)
+ {
+ if (entry->rec_type == dst_typ_var)
+ {
+ if (DST_var(entry).short_locs)
+ {
+ loc_type = DST_var(entry).locs.shorts[0].loc_type;
+ loc_index = DST_var(entry).locs.shorts[0].loc_index;
+ loc_value = DST_var(entry).locs.shorts[0].location;
+ }
+ else
+ {
+ loc_type = DST_var(entry).locs.longs[0].loc_type;
+ loc_index = DST_var(entry).locs.longs[0].loc_index;
+ loc_value = DST_var(entry).locs.longs[0].location;
+ }
+ if (loc_type == dst_var_loc_external)
+ continue;
+ symname = DST_OFFSET(entry, DST_var(entry).noffset);
+ line = DST_var(entry).src_loc.line_number;
+ symtype = DST_var(entry).type_desc;
+ attr = DST_var(entry).attributes;
+ }
+ else if (entry->rec_type == dst_typ_variable)
+ {
+ symname = DST_OFFSET(entry,
+ DST_variable(entry).noffset);
+ line = DST_variable(entry).src_loc.line_number;
+ symtype = DST_variable(entry).type_desc;
+ attr = DST_variable(entry).attributes;
+ }
+ else
+ {
+ continue;
+ }
+ if (symname && name && !strcmp(symname, name))
+ /* It's the function return value */
+ continue;
+ sym = create_new_symbol(objfile, symname);
+
+ if ((attr & (1<<dst_var_attr_global)) ||
+ (attr & (1<<dst_var_attr_static)))
+ SYMBOL_CLASS(sym) = LOC_STATIC;
+ else
+ SYMBOL_CLASS(sym) = LOC_LOCAL;
+ SYMBOL_LINE(sym) = line;
+ SYMBOL_TYPE(sym) = decode_type_desc(objfile, &symtype,
+ entry);
+ SYMBOL_VALUE(sym) = 0;
+ switch (entry->rec_type)
+ {
+ case dst_typ_var:
+ switch(loc_type)
+ {
+ case dst_var_loc_abs:
+ SYMBOL_VALUE_ADDRESS(sym) = loc_value;
+ break;
+ case dst_var_loc_sect_off:
+ case dst_var_loc_ind_sect_off: /* What is this? */
+ SYMBOL_VALUE_ADDRESS(sym) = dst_get_addr(
+ loc_index,
+ loc_value);
+ break;
+ case dst_var_loc_ind_reg_rel: /* What is this? */
+ case dst_var_loc_reg_rel:
+ /* If it isn't fp relative, specify the
+ * register it's relative to.
+ */
+ if (loc_index)
+ {
+ sym->aux_value.basereg = loc_index;
+ }
+ SYMBOL_VALUE(sym) = loc_value;
+ if (loc_value > 0 &&
+ SYMBOL_CLASS(sym) == LOC_BASEREG)
+ SYMBOL_CLASS(sym) = LOC_BASEREG_ARG;
+ break;
+ case dst_var_loc_reg:
+ SYMBOL_VALUE(sym) = loc_index;
+ SYMBOL_CLASS(sym) = LOC_REGISTER;
+ break;
+ }
+ break;
+ case dst_typ_variable:
+ /* External variable..... don't try to interpret
+ * its nonexistant locstring.
+ */
+ if (DST_variable(entry).loffset == -1)
+ continue;
+ decode_dst_locstring(DST_OFFSET(entry,
+ DST_variable(entry).loffset),
+ sym);
+ }
+ element = (struct symbol_list *)
+ xmalloc(sizeof(struct symbol_list));
+
+ if (attr & (1<<dst_var_attr_global))
+ {
+ element->next = dst_global_symbols;
+ dst_global_symbols = element;
+ total_globals++;
+ }
+ else
+ {
+ element->next = list;
+ list = element;
+ nsyms++;
+ }
+ element->symbol = sym;
+ }
+ *nsyms_ret = nsyms;
+ return list;
+}
+
+
+static struct symbol *
+process_dst_function(objfile, entry, name, address)
+ struct objfile *objfile;
+ dst_rec_ptr_t entry;
+ char *name;
+ CORE_ADDR address;
+{
+ struct symbol *sym;
+ struct type *type, *ftype;
+ dst_rec_ptr_t sym_entry, typ_entry;
+ char *location;
+ struct symbol_list *element;
+
+ type = builtin_type_int;
+ sym = create_new_symbol(objfile, name);
+ SYMBOL_CLASS(sym) = LOC_BLOCK;
+
+ if (entry)
+ {
+ location = (char *) entry;
+ do
+ {
+ NEXT_SYM(&location, &sym_entry);
+ } while (sym_entry && sym_entry->rec_type != dst_typ_signature);
+
+ if (sym_entry)
+ {
+ SYMBOL_LINE(sym) =
+ DST_signature(sym_entry).src_loc.line_number;
+ if (DST_signature(sym_entry).result)
+ {
+ typ_entry = (dst_rec_ptr_t)
+ DST_OFFSET(sym_entry,
+ DST_signature(sym_entry).result);
+ type = decode_dst_type(objfile, typ_entry);
+ }
+ }
+ }
+
+ if (!type->function_type)
+ {
+ ftype = create_new_type(objfile);
+ type->function_type = ftype;
+ ftype->target_type = type;
+ ftype->code = TYPE_CODE_FUNC;
+ }
+ SYMBOL_TYPE(sym) = type->function_type;
+
+ /* Now add ourselves to the global symbols list */
+ element = (struct symbol_list *)
+ xmalloc(sizeof(struct symbol_list));
+
+ element->next = dst_global_symbols;
+ dst_global_symbols = element;
+ total_globals++;
+ element->symbol = sym;
+
+ return sym;
+}
+
+static struct block *
+process_dst_block(objfile, entry)
+ struct objfile *objfile;
+ dst_rec_ptr_t entry;
+{
+ struct block *block;
+ struct symbol *function = NULL;
+ CORE_ADDR address;
+ long size;
+ char *name;
+ dst_rec_ptr_t child_entry, symbol_entry;
+ struct block *child_block;
+ int total_symbols = 0;
+ struct pending_block *pblock;
+ char fake_name[20];
+ static long fake_seq = 0;
+ struct symbol_list *symlist, *nextsym;
+ int symnum;
+
+ if (DST_block(entry).noffset)
+ name = DST_OFFSET(entry, DST_block(entry).noffset);
+ else
+ name = NULL;
+ if (DST_block(entry).n_of_code_ranges)
+ {
+ address = dst_sym_addr(
+ &DST_block(entry).code_ranges[0].code_start);
+ size = DST_block(entry).code_ranges[0].code_size;
+ }
+ else
+ {
+ address = -1;
+ size = 0;
+ }
+ symbol_entry = (dst_rec_ptr_t) get_sec_ref(&DST_block(entry).symbols_start);
+ switch(DST_block(entry).block_type)
+ {
+ /* These are all really functions. Even the "program" type.
+ * This is because the Apollo OS was written in Pascal, and
+ * in Pascal, the main procedure is described as the Program.
+ * Cute, huh?
+ */
+ case dst_block_procedure:
+ case dst_block_function:
+ case dst_block_subroutine:
+ case dst_block_program:
+ record_minimal_symbol(name, address, mst_text);
+ function = process_dst_function(
+ objfile,
+ symbol_entry,
+ name,
+ address);
+ enter_all_lines(get_sec_ref(&DST_block(entry).code_ranges[0].lines_start), address);
+ break;
+ case dst_block_block_data:
+ break;
+
+ default:
+ /* GDB has to call it something, and the module name
+ * won't cut it
+ */
+ sprintf(fake_name, "block_%08lx", fake_seq++);
+ function = process_dst_function(
+ objfile, NULL, fake_name, address);
+ break;
+ }
+ symlist = process_dst_symbols(objfile, symbol_entry,
+ name, &total_symbols);
+ block = (struct block *)
+ obstack_alloc (&objfile->symbol_obstack,
+ sizeof (struct block) +
+ (total_symbols - 1) * sizeof (struct symbol *));
+
+ symnum = 0;
+ while (symlist)
+ {
+ nextsym = symlist->next;
+
+ block->sym[symnum] = symlist->symbol;
+
+ free((PTR) symlist);
+ symlist = nextsym;
+ symnum++;
+ }
+ BLOCK_NSYMS (block) = total_symbols;
+ BLOCK_START (block) = address;
+ BLOCK_END (block) = address + size;
+ BLOCK_SUPERBLOCK (block) = 0;
+ if (function)
+ {
+ SYMBOL_BLOCK_VALUE (function) = block;
+ BLOCK_FUNCTION (block) = function;
+ }
+ else
+ BLOCK_FUNCTION (block) = 0;
+
+ pblock = (struct pending_block *)
+ xmalloc (sizeof (struct pending_block));
+ pblock->block = block;
+ pblock->next = pending_blocks;
+ pending_blocks = pblock;
+ if (DST_block(entry).child_block_off)
+ {
+ child_entry = (dst_rec_ptr_t) DST_OFFSET(entry,
+ DST_block(entry).child_block_off);
+ while (child_entry)
+ {
+ child_block = process_dst_block(objfile, child_entry);
+ if (child_block)
+ {
+ if (BLOCK_START(child_block) <
+ BLOCK_START(block) ||
+ BLOCK_START(block) == -1)
+ BLOCK_START(block) =
+ BLOCK_START(child_block);
+ if (BLOCK_END(child_block) >
+ BLOCK_END(block) ||
+ BLOCK_END(block) == -1)
+ BLOCK_END(block) =
+ BLOCK_END(child_block);
+ BLOCK_SUPERBLOCK (child_block) = block;
+ }
+ if (DST_block(child_entry).sibling_block_off)
+ child_entry = (dst_rec_ptr_t) DST_OFFSET(
+ child_entry,
+ DST_block(child_entry).sibling_block_off);
+ else
+ child_entry = NULL;
+ }
+ }
+ return block;
+}
+
+
+static void
+read_dst_symtab (objfile)
+ struct objfile *objfile;
+{
+ char *buffer;
+ dst_rec_ptr_t entry, file_table, root_block;
+ char *source_file;
+ struct block *block, *global_block;
+ struct pending_block *pblock;
+ int symnum;
+ struct symbol_list *nextsym;
+ int module_num = 0;
+ struct structure_list *element;
+
+ current_objfile = objfile;
+ buffer = blocks_info.buffer;
+ while (NEXT_BLK(&buffer, &entry))
+ {
+ if (entry->rec_type == dst_typ_comp_unit)
+ {
+ file_table = (dst_rec_ptr_t) DST_OFFSET(entry,
+ DST_comp_unit(entry).file_table);
+ section_table = (dst_rec_ptr_t) DST_OFFSET(entry,
+ DST_comp_unit(entry).section_table);
+ root_block = (dst_rec_ptr_t) DST_OFFSET(entry,
+ DST_comp_unit(entry).root_block_offset);
+ source_file = DST_OFFSET(file_table,
+ DST_file_tab(file_table).files[0].noffset);
+ /* Point buffer to the start of the next comp_unit */
+ buffer = DST_OFFSET(entry,
+ DST_comp_unit(entry).data_size);
+ dst_start_symtab();
+
+ pblock = (struct pending_block *)
+ xmalloc (sizeof (struct pending_block));
+ pblock->next = NULL;
+ pending_blocks = pblock;
+
+ block = process_dst_block(objfile, root_block);
+
+ global_block = (struct block *)
+ obstack_alloc (&objfile->symbol_obstack,
+ sizeof (struct block) +
+ (total_globals - 1) *
+ sizeof (struct symbol *));
+ BLOCK_NSYMS(global_block) = total_globals;
+ for (symnum = 0; symnum < total_globals; symnum++)
+ {
+ nextsym = dst_global_symbols->next;
+
+ global_block->sym[symnum] =
+ dst_global_symbols->symbol;
+
+ free((PTR) dst_global_symbols);
+ dst_global_symbols = nextsym;
+ }
+ dst_global_symbols = NULL;
+ total_globals = 0;
+ BLOCK_FUNCTION(global_block) = 0;
+ BLOCK_START(global_block) = BLOCK_START(block);
+ BLOCK_END(global_block) = BLOCK_END(block);
+ BLOCK_SUPERBLOCK(global_block) = 0;
+ BLOCK_SUPERBLOCK(block) = global_block;
+ pblock->block = global_block;
+
+ complete_symtab(source_file,
+ BLOCK_START(block),
+ BLOCK_END(block) - BLOCK_START(block));
+ module_num++;
+ dst_end_symtab(objfile);
+ }
+ }
+ if (module_num)
+ record_minimal_symbol("<end_of_program>",
+ BLOCK_END(block), mst_text);
+ /* One more faked symbol to make sure nothing can ever run off the
+ * end of the symbol table. This one represents the end of the
+ * text space. It used to be (CORE_ADDR) -1 (effectively the highest
+ * int possible), but some parts of gdb treated it as a signed
+ * number and failed comparisons. We could equally use 7fffffff,
+ * but no functions are ever mapped to an address higher than
+ * 40000000
+ */
+ record_minimal_symbol("<end_of_text>",
+ (CORE_ADDR) 0x40000000,
+ mst_text);
+ while (struct_list)
+ {
+ element = struct_list;
+ struct_list = element->next;
+ free((PTR) element);
+ }
+}
+
+\f
+/* Support for line number handling */
+static char *linetab = NULL;
+static long linetab_offset;
+static unsigned long linetab_size;
+
+/* Read in all the line numbers for fast lookups later. Leave them in
+ external (unswapped) format in memory; we'll swap them as we enter
+ them into GDB's data structures. */
+static int
+init_one_section(chan, secinfo)
+ int chan;
+ dst_sec *secinfo;
+{
+ if (secinfo->size == 0
+ || lseek(chan, secinfo->position, 0) == -1
+ || (secinfo->buffer = xmalloc(secinfo->size)) == NULL
+ || myread(chan, secinfo->buffer, secinfo->size) == -1)
+ return 0;
+ else
+ return 1;
+}
+
+static int
+init_dst_sections (chan)
+ int chan;
+{
+
+ if (!init_one_section(chan, &blocks_info) ||
+ !init_one_section(chan, &lines_info) ||
+ !init_one_section(chan, &symbols_info))
+ return -1;
+ else
+ return 0;
+}
+
+/* Fake up support for relocating symbol addresses. FIXME. */
+
+struct section_offsets dst_symfile_faker = {0};
+
+struct section_offsets *
+dst_symfile_offsets (objfile, addr)
+ struct objfile *objfile;
+ CORE_ADDR addr;
+{
+ return &dst_symfile_faker;
+}
+
+/* Register our ability to parse symbols for DST BFD files */
+
+static struct sym_fns dst_sym_fns =
+{
+ "apollo", /* sym_name: name or name prefix of BFD target type */
+ 6, /* sym_namelen: number of significant sym_name chars */
+ dst_new_init, /* sym_new_init: init anything gbl to entire symtab */
+ dst_symfile_init, /* sym_init: read initial info, setup for sym_read() */
+ dst_symfile_read, /* sym_read: read a symbol file into symtab */
+ dst_symfile_finish, /* sym_finish: finished with file, cleanup */
+ dst_symfile_offsets, /* sym_offsets: xlate external to internal form */
+ NULL /* next: pointer to next struct sym_fns */
+};
+
+void
+_initialize_dstread ()
+{
+ add_symtab_fns(&dst_sym_fns);
+}
projects / binutils-gdb.git / commitdiff