+/* <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 */
projects / deliverable / binutils-gdb.git / blobdiff