/* Symbol table definitions for GDB.
- Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1986, 89, 91, 92, 93, 94, 95, 96, 1998
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#if !defined (SYMTAB_H)
#define SYMTAB_H 1
-#include <obstack.h>
-
-/* An obstack to hold objects that should be freed
- when we load a new symbol table.
- This includes the symbols made by dbxread
- and the types that are not permanent. */
-
-extern struct obstack *symbol_obstack;
-extern struct obstack *psymbol_obstack;
/* Some definitions and declarations to go with use of obstacks. */
+
+#include "obstack.h"
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
-#ifdef __STDC__
-extern void *xmalloc ();
+#include "bcache.h"
+
+/* Don't do this; it means that if some .o's are compiled with GNU C
+ and some are not (easy to do accidentally the way we configure
+ things; also it is a pain to have to "make clean" every time you
+ want to switch compilers), then GDB dies a horrible death. */
+/* GNU C supports enums that are bitfields. Some compilers don't. */
+#if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD)
+#define BYTE_BITFIELD :8;
#else
-extern char *xmalloc ();
+#define BYTE_BITFIELD /*nothing */
#endif
-extern void free ();
-
-/* Some macros for char-based bitfields. */
-#define B_SET(a,x) (a[x>>3] |= (1 << (x&7)))
-#define B_CLR(a,x) (a[x>>3] &= ~(1 << (x&7)))
-#define B_TST(a,x) (a[x>>3] & (1 << (x&7)))
-#define B_TYPE unsigned char
-#define B_BYTES(x) ( 1 + ((x)>>3) )
-#define B_CLRALL(a,x) bzero (a, B_BYTES(x))
-
-/* gdb can know one or several symbol tables at the same time;
- the ultimate intent is to have one for each separately-compiled module.
- Each such symbol table is recorded by a struct symtab, and they
- are all chained together. */
-
-/* In addition, gdb can record any number of miscellaneous undebuggable
- functions' addresses. In a system that appends _ to function names,
- the _'s are removed from the names stored in this table. */
-
-/* Actually, the misc function list is used to store *all* of the
- global symbols (text, data, bss, and abs). It is sometimes used
- to figure out what symtabs to read in. The "type" field is used
- occasionally. Calling it the misc "function" vector is now a misnomer.
-
- The misc_info field is available for machine-specific information
- that can be cached along with a misc function vector entry. The
- AMD 29000 tdep.c uses it to remember things it has decoded from the
- instructions in the function header, so it doesn't have to rederive
- the info constantly (over a serial line). It is initialized to zero
- and stays that way until target-dependent code sets it. */
-
-enum misc_function_type {mf_unknown = 0, mf_text, mf_data, mf_bss, mf_abs};
-
-struct misc_function
-{
- char *name;
- CORE_ADDR address;
- char *misc_info; /* Random pointer to misc info. void * but for old C */
- enum misc_function_type type;
-};
-
-/* Address and length of the vector recording all misc function names/addresses. */
-
-struct misc_function *misc_function_vector;
-int misc_function_count;
-\f
-/* Different kinds of data types are distinguished by the `code' field. */
-
-enum type_code
-{
- TYPE_CODE_UNDEF, /* Not used; catches errors */
- TYPE_CODE_PTR, /* Pointer type */
- TYPE_CODE_ARRAY, /* Array type, lower bound zero */
- TYPE_CODE_STRUCT, /* C struct or Pascal record */
- TYPE_CODE_UNION, /* C union or Pascal variant part */
- TYPE_CODE_ENUM, /* Enumeration type */
- TYPE_CODE_FUNC, /* Function type */
- TYPE_CODE_INT, /* Integer type */
- TYPE_CODE_FLT, /* Floating type */
- TYPE_CODE_VOID, /* Void type (values zero length) */
- TYPE_CODE_SET, /* Pascal sets */
- TYPE_CODE_RANGE, /* Range (integers within spec'd bounds) */
- TYPE_CODE_PASCAL_ARRAY, /* Array with explicit type of index */
- TYPE_CODE_ERROR, /* Unknown type */
-
- /* C++ */
- TYPE_CODE_MEMBER, /* Member type */
- TYPE_CODE_METHOD, /* Method type */
- TYPE_CODE_REF, /* C++ Reference types */
-
- /* Modula-2 */
- TYPE_CODE_CHAR, /* *real* character type */
- TYPE_CODE_BOOL, /* Builtin Modula-2 BOOLEAN */
-};
-
-/* This appears in a type's flags word for an unsigned integer type. */
-#define TYPE_FLAG_UNSIGNED 1
-/* This appears in a type's flags word
- if it is a (pointer to a|function returning a)* built in scalar type.
- These types are never freed. */
-#define TYPE_FLAG_PERM 4
-/* This appears in a type's flags word if it is a stub type (eg. if
- someone referenced a type that wasn't definined in a source file
- via (struct sir_not_appearing_in_this_film *)). */
-#define TYPE_FLAG_STUB 8
-/* Set when a class has a constructor defined */
-#define TYPE_FLAG_HAS_CONSTRUCTOR 256
-/* Set when a class has a destructor defined */
-#define TYPE_FLAG_HAS_DESTRUCTOR 512
-
-struct type
-{
- /* Code for kind of type */
- enum type_code code;
- /* Name of this type, or zero if none.
- This is used for printing only, except by poorly designed C++ code.
- Type names specified as input are defined by symbols. */
- char *name;
- /* Length in bytes of storage for a value of this type */
- unsigned length;
- /* For a pointer type, describes the type of object pointed to.
- For an array type, describes the type of the elements.
- For a function or method type, describes the type of the value.
- For a range type, describes the type of the full range.
- Unused otherwise. */
- struct type *target_type;
- /* Type that is a pointer to this type.
- Zero if no such pointer-to type is known yet.
- The debugger may add the address of such a type
- if it has to construct one later. */
- struct type *pointer_type;
- /* C++: also need a reference type. */
- struct type *reference_type;
- struct type **arg_types;
-
- /* Type that is a function returning this type.
- Zero if no such function type is known here.
- The debugger may add the address of such a type
- if it has to construct one later. */
- struct type *function_type;
-
-/* Handling of pointers to members:
- TYPE_MAIN_VARIANT is used for pointer and pointer
- to member types. Normally it the value of the address of its
- containing type. However, for pointers to members, we must be
- able to allocate pointer to member types and look them up
- from some place of reference.
- NEXT_VARIANT is the next element in the chain.
-
- A long time ago (Jul 88; GDB 2.5) Tiemann said that main_variant
- may no longer be necessary and that he might eliminate it. I don't
- know whether this is still true (or ever was). */
- struct type *main_variant, *next_variant;
-
- /* Flags about this type. */
- short flags;
- /* Number of fields described for this type */
- short nfields;
- /* For structure and union types, a description of each field.
- For set and pascal array types, there is one "field",
- whose type is the domain type of the set or array.
- For range types, there are two "fields",
- the minimum and maximum values (both inclusive).
- For enum types, each possible value is described by one "field".
-
- Using a pointer to a separate array of fields
- allows all types to have the same size, which is useful
- because we can allocate the space for a type before
- we know what to put in it. */
- struct field
- {
- /* Position of this field, counting in bits from start of
- containing structure. For a function type, this is the
- position in the argument list of this argument.
- For a range bound or enum value, this is the value itself. */
- int bitpos;
- /* Size of this field, in bits, or zero if not packed.
- For an unpacked field, the field's type's length
- says how many bytes the field occupies. */
- int bitsize;
- /* In a struct or enum type, type of this field.
- In a function type, type of this argument.
- In an array type, the domain-type of the array. */
- struct type *type;
- /* Name of field, value or argument.
- Zero for range bounds and array domains. */
- char *name;
- } *fields;
-
- /* C++ */
- B_TYPE *virtual_field_bits; /* if base class is virtual */
- B_TYPE *private_field_bits;
- B_TYPE *protected_field_bits;
-
- /* Number of methods described for this type */
- short nfn_fields;
- /* Number of base classes this type derives from. */
- short n_baseclasses;
-
- /* Number of methods described for this type plus all the
- methods that it derives from. */
- int nfn_fields_total;
-
- /* For classes, structures, and unions, a description of each field,
- which consists of an overloaded name, followed by the types of
- arguments that the method expects, and then the name after it
- has been renamed to make it distinct. */
- struct fn_fieldlist
- {
- /* The overloaded name. */
- char *name;
- /* The number of methods with this name. */
- int length;
- /* The list of methods. */
- struct fn_field
- {
-#if 0
- /* The overloaded name */
- char *name;
+
+/* Define a structure for the information that is common to all symbol types,
+ including minimal symbols, partial symbols, and full symbols. In a
+ multilanguage environment, some language specific information may need to
+ be recorded along with each symbol.
+
+ These fields are ordered to encourage good packing, since we frequently
+ have tens or hundreds of thousands of these. */
+
+struct general_symbol_info
+ {
+ /* Name of the symbol. This is a required field. Storage for the name is
+ allocated on the psymbol_obstack or symbol_obstack for the associated
+ objfile. */
+
+ char *name;
+
+ /* Value of the symbol. Which member of this union to use, and what
+ it means, depends on what kind of symbol this is and its
+ SYMBOL_CLASS. See comments there for more details. All of these
+ are in host byte order (though what they point to might be in
+ target byte order, e.g. LOC_CONST_BYTES). */
+
+ union
+ {
+ /* The fact that this is a long not a LONGEST mainly limits the
+ range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not
+ sure that is a big deal. */
+ long ivalue;
+
+ struct block *block;
+
+ char *bytes;
+
+ CORE_ADDR address;
+
+ /* for opaque typedef struct chain */
+
+ struct symbol *chain;
+ }
+ value;
+
+ /* Since one and only one language can apply, wrap the language specific
+ information inside a union. */
+
+ union
+ {
+ struct cplus_specific /* For C++ */
+ /* and Java */
+ {
+ char *demangled_name;
+ }
+ cplus_specific;
+ struct chill_specific /* For Chill */
+ {
+ char *demangled_name;
+ }
+ chill_specific;
+ }
+ language_specific;
+
+ /* Record the source code language that applies to this symbol.
+ This is used to select one of the fields from the language specific
+ union above. */
+
+ enum language language BYTE_BITFIELD;
+
+ /* Which section is this symbol in? This is an index into
+ section_offsets for this objfile. Negative means that the symbol
+ does not get relocated relative to a section.
+ Disclaimer: currently this is just used for xcoff, so don't
+ expect all symbol-reading code to set it correctly (the ELF code
+ also tries to set it correctly). */
+
+ short section;
+
+ /* The bfd section associated with this symbol. */
+
+ asection *bfd_section;
+ };
+
+extern CORE_ADDR symbol_overlayed_address PARAMS ((CORE_ADDR, asection *));
+
+#define SYMBOL_NAME(symbol) (symbol)->ginfo.name
+#define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue
+#define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address
+#define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes
+#define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block
+#define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain
+#define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language
+#define SYMBOL_SECTION(symbol) (symbol)->ginfo.section
+#define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section
+
+#define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \
+ (symbol)->ginfo.language_specific.cplus_specific.demangled_name
+
+/* Macro that initializes the language dependent portion of a symbol
+ depending upon the language for the symbol. */
+
+#define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \
+ do { \
+ SYMBOL_LANGUAGE (symbol) = language; \
+ if (SYMBOL_LANGUAGE (symbol) == language_cplus \
+ || SYMBOL_LANGUAGE (symbol) == language_java \
+ ) \
+ { \
+ SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
+ } \
+ else if (SYMBOL_LANGUAGE (symbol) == language_chill) \
+ { \
+ SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \
+ } \
+ else \
+ { \
+ memset (&(symbol)->ginfo.language_specific, 0, \
+ sizeof ((symbol)->ginfo.language_specific)); \
+ } \
+ } while (0)
+
+/* Macro that attempts to initialize the demangled name for a symbol,
+ based on the language of that symbol. If the language is set to
+ language_auto, it will attempt to find any demangling algorithm
+ that works and then set the language appropriately. If no demangling
+ of any kind is found, the language is set back to language_unknown,
+ so we can avoid doing this work again the next time we encounter
+ the symbol. Any required space to store the name is obtained from the
+ specified obstack. */
+
+#define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \
+ do { \
+ char *demangled = NULL; \
+ if (SYMBOL_LANGUAGE (symbol) == language_cplus \
+ || SYMBOL_LANGUAGE (symbol) == language_auto) \
+ { \
+ demangled = \
+ cplus_demangle (SYMBOL_NAME (symbol), DMGL_PARAMS | DMGL_ANSI);\
+ if (demangled != NULL) \
+ { \
+ SYMBOL_LANGUAGE (symbol) = language_cplus; \
+ SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \
+ obsavestring (demangled, strlen (demangled), (obstack)); \
+ free (demangled); \
+ } \
+ else \
+ { \
+ SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
+ } \
+ } \
+ if (SYMBOL_LANGUAGE (symbol) == language_java) \
+ { \
+ demangled = \
+ cplus_demangle (SYMBOL_NAME (symbol), \
+ DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); \
+ if (demangled != NULL) \
+ { \
+ SYMBOL_LANGUAGE (symbol) = language_java; \
+ SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \
+ obsavestring (demangled, strlen (demangled), (obstack)); \
+ free (demangled); \
+ } \
+ else \
+ { \
+ SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
+ } \
+ } \
+ if (demangled == NULL \
+ && (SYMBOL_LANGUAGE (symbol) == language_chill \
+ || SYMBOL_LANGUAGE (symbol) == language_auto)) \
+ { \
+ demangled = \
+ chill_demangle (SYMBOL_NAME (symbol)); \
+ if (demangled != NULL) \
+ { \
+ SYMBOL_LANGUAGE (symbol) = language_chill; \
+ SYMBOL_CHILL_DEMANGLED_NAME (symbol) = \
+ obsavestring (demangled, strlen (demangled), (obstack)); \
+ free (demangled); \
+ } \
+ else \
+ { \
+ SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \
+ } \
+ } \
+ if (SYMBOL_LANGUAGE (symbol) == language_auto) \
+ { \
+ SYMBOL_LANGUAGE (symbol) = language_unknown; \
+ } \
+ } while (0)
+
+/* Macro that returns the demangled name for a symbol based on the language
+ for that symbol. If no demangled name exists, returns NULL. */
+
+#define SYMBOL_DEMANGLED_NAME(symbol) \
+ (SYMBOL_LANGUAGE (symbol) == language_cplus \
+ || SYMBOL_LANGUAGE (symbol) == language_java \
+ ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \
+ : (SYMBOL_LANGUAGE (symbol) == language_chill \
+ ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \
+ : NULL))
+
+#define SYMBOL_CHILL_DEMANGLED_NAME(symbol) \
+ (symbol)->ginfo.language_specific.chill_specific.demangled_name
+
+/* Macro that returns the "natural source name" of a symbol. In C++ this is
+ the "demangled" form of the name if demangle is on and the "mangled" form
+ of the name if demangle is off. In other languages this is just the
+ symbol name. The result should never be NULL. */
+
+#define SYMBOL_SOURCE_NAME(symbol) \
+ (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \
+ ? SYMBOL_DEMANGLED_NAME (symbol) \
+ : SYMBOL_NAME (symbol))
+
+/* Macro that returns the "natural assembly name" of a symbol. In C++ this is
+ the "mangled" form of the name if demangle is off, or if demangle is on and
+ asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled"
+ form. In other languages this is just the symbol name. The result should
+ never be NULL. */
+
+#define SYMBOL_LINKAGE_NAME(symbol) \
+ (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \
+ ? SYMBOL_DEMANGLED_NAME (symbol) \
+ : SYMBOL_NAME (symbol))
+
+/* Macro that tests a symbol for a match against a specified name string.
+ First test the unencoded name, then looks for and test a C++ encoded
+ name if it exists. Note that whitespace is ignored while attempting to
+ match a C++ encoded name, so that "foo::bar(int,long)" is the same as
+ "foo :: bar (int, long)".
+ Evaluates to zero if the match fails, or nonzero if it succeeds. */
+
+#define SYMBOL_MATCHES_NAME(symbol, name) \
+ (STREQ (SYMBOL_NAME (symbol), (name)) \
+ || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \
+ && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0))
+
+/* Macro that tests a symbol for an re-match against the last compiled regular
+ expression. First test the unencoded name, then look for and test a C++
+ encoded name if it exists.
+ Evaluates to zero if the match fails, or nonzero if it succeeds. */
+
+#define SYMBOL_MATCHES_REGEXP(symbol) \
+ (re_exec (SYMBOL_NAME (symbol)) != 0 \
+ || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \
+ && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0))
+
+/* Define a simple structure used to hold some very basic information about
+ all defined global symbols (text, data, bss, abs, etc). The only required
+ information is the general_symbol_info.
+
+ In many cases, even if a file was compiled with no special options for
+ debugging at all, as long as was not stripped it will contain sufficient
+ information to build a useful minimal symbol table using this structure.
+ Even when a file contains enough debugging information to build a full
+ symbol table, these minimal symbols are still useful for quickly mapping
+ between names and addresses, and vice versa. They are also sometimes
+ used to figure out what full symbol table entries need to be read in. */
+
+struct minimal_symbol
+ {
+
+ /* The general symbol info required for all types of symbols.
+
+ The SYMBOL_VALUE_ADDRESS contains the address that this symbol
+ corresponds to. */
+
+ struct general_symbol_info ginfo;
+
+ /* The info field is available for caching machine-specific information
+ so it doesn't have to rederive the info constantly (over a serial line).
+ It is initialized to zero and stays that way until target-dependent code
+ sets it. Storage for any data pointed to by this field should be allo-
+ cated on the symbol_obstack for the associated objfile.
+ The type would be "void *" except for reasons of compatibility with older
+ compilers. This field is optional.
+
+ Currently, the AMD 29000 tdep.c uses it to remember things it has decoded
+ from the instructions in the function header, and the MIPS-16 code uses
+ it to identify 16-bit procedures. */
+
+ char *info;
+
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Which source file is this symbol in? Only relevant for mst_file_*. */
+ char *filename;
#endif
- /* The return value of the method */
- struct type *type;
- /* The argument list */
- struct type **args;
- /* The name after it has been processed */
- char *physname;
-
- /* For virtual functions. */
- /* First baseclass that defines this virtual function. */
- struct type *fcontext;
- unsigned int is_const : 1;
- unsigned int is_volatile : 1;
- /* Index into that baseclass's virtual function table,
- minus 2; else if static: VOFFSET_STATIC; else: 0. */
- unsigned long voffset : 30;
-# define VOFFSET_STATIC 1
- } *fn_fields;
-
- B_TYPE *private_fn_field_bits;
- B_TYPE *protected_fn_field_bits;
-
- } *fn_fieldlists;
-
- unsigned char via_protected;
- unsigned char via_public;
-
- /* For types with virtual functions, VPTR_BASETYPE is the base class which
- defined the virtual function table pointer. VPTR_FIELDNO is
- the field number of that pointer in the structure.
-
- For types that are pointer to member types, VPTR_BASETYPE
- ifs the type that this pointer is a member of.
-
- Unused otherwise. */
- struct type *vptr_basetype;
-
- int vptr_fieldno;
-};
+
+ /* Classification types for this symbol. These should be taken as "advisory
+ only", since if gdb can't easily figure out a classification it simply
+ selects mst_unknown. It may also have to guess when it can't figure out
+ which is a better match between two types (mst_data versus mst_bss) for
+ example. Since the minimal symbol info is sometimes derived from the
+ BFD library's view of a file, we need to live with what information bfd
+ supplies. */
+
+ enum minimal_symbol_type
+ {
+ mst_unknown = 0, /* Unknown type, the default */
+ mst_text, /* Generally executable instructions */
+ mst_data, /* Generally initialized data */
+ mst_bss, /* Generally uninitialized data */
+ mst_abs, /* Generally absolute (nonrelocatable) */
+ /* GDB uses mst_solib_trampoline for the start address of a shared
+ library trampoline entry. Breakpoints for shared library functions
+ are put there if the shared library is not yet loaded.
+ After the shared library is loaded, lookup_minimal_symbol will
+ prefer the minimal symbol from the shared library (usually
+ a mst_text symbol) over the mst_solib_trampoline symbol, and the
+ breakpoints will be moved to their true address in the shared
+ library via breakpoint_re_set. */
+ mst_solib_trampoline, /* Shared library trampoline code */
+ /* For the mst_file* types, the names are only guaranteed to be unique
+ within a given .o file. */
+ mst_file_text, /* Static version of mst_text */
+ mst_file_data, /* Static version of mst_data */
+ mst_file_bss /* Static version of mst_bss */
+ }
+ type BYTE_BITFIELD;
+ };
+
+#define MSYMBOL_INFO(msymbol) (msymbol)->info
+#define MSYMBOL_TYPE(msymbol) (msymbol)->type
\f
+
/* All of the name-scope contours of the program
are represented by `struct block' objects.
All of these objects are pointed to by the blockvector.
Each block represents one name scope.
Each lexical context has its own block.
- The first two blocks in the blockvector are special.
- The first one contains all the symbols defined in this compilation
+ The blockvector begins with some special blocks.
+ The GLOBAL_BLOCK contains all the symbols defined in this compilation
whose scope is the entire program linked together.
- The second one contains all the symbols whose scope is the
+ The STATIC_BLOCK contains all the symbols whose scope is the
entire compilation excluding other separate compilations.
- In C, these correspond to global symbols and static symbols.
+ Blocks starting with the FIRST_LOCAL_BLOCK are not special.
Each block records a range of core addresses for the code that
- is in the scope of the block. The first two special blocks
+ is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK
give, for the range of code, the entire range of code produced
by the compilation that the symbol segment belongs to.
the blocks appear in the order of a depth-first tree walk. */
struct blockvector
-{
- /* Number of blocks in the list. */
- int nblocks;
- /* The blocks themselves. */
- struct block *block[1];
-};
+ {
+ /* Number of blocks in the list. */
+ int nblocks;
+ /* The blocks themselves. */
+ struct block *block[1];
+ };
+
+#define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks
+#define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n]
/* Special block numbers */
-#define GLOBAL_BLOCK 0
-#define STATIC_BLOCK 1
+
+#define GLOBAL_BLOCK 0
+#define STATIC_BLOCK 1
#define FIRST_LOCAL_BLOCK 2
struct block
-{
- /* Addresses in the executable code that are in this block.
- Note: in an unrelocated symbol segment in a file,
- these are always zero. They can be filled in from the
- N_LBRAC and N_RBRAC symbols in the loader symbol table. */
- CORE_ADDR startaddr, endaddr;
- /* The symbol that names this block,
- if the block is the body of a function;
- otherwise, zero.
- Note: In an unrelocated symbol segment in an object file,
- this field may be zero even when the block has a name.
- That is because the block is output before the name
- (since the name resides in a higher block).
- Since the symbol does point to the block (as its value),
- it is possible to find the block and set its name properly. */
- struct symbol *function;
- /* The `struct block' for the containing block, or 0 if none. */
- /* Note that in an unrelocated symbol segment in an object file
- this pointer may be zero when the correct value should be
- the second special block (for symbols whose scope is one compilation).
- This is because the compiler ouptuts the special blocks at the
- very end, after the other blocks. */
- struct block *superblock;
- /* A flag indicating whether or not the fucntion corresponding
- to this block was compiled with gcc or not. If there is no
- function corresponding to this block, this meaning of this flag
- is undefined. (In practice it will be 1 if the block was created
- while processing a file compiled with gcc and 0 when not). */
- unsigned char gcc_compile_flag;
- /* Number of local symbols. */
- int nsyms;
- /* The symbols. */
- struct symbol *sym[1];
-};
+ {
+
+ /* Addresses in the executable code that are in this block. */
+
+ CORE_ADDR startaddr;
+ CORE_ADDR endaddr;
+
+ /* The symbol that names this block, if the block is the body of a
+ function; otherwise, zero. */
+
+ struct symbol *function;
+
+ /* The `struct block' for the containing block, or 0 if none.
+
+ The superblock of a top-level local block (i.e. a function in the
+ case of C) is the STATIC_BLOCK. The superblock of the
+ STATIC_BLOCK is the GLOBAL_BLOCK. */
+
+ struct block *superblock;
+
+ /* Version of GCC used to compile the function corresponding
+ to this block, or 0 if not compiled with GCC. When possible,
+ GCC should be compatible with the native compiler, or if that
+ is not feasible, the differences should be fixed during symbol
+ reading. As of 16 Apr 93, this flag is never used to distinguish
+ between gcc2 and the native compiler.
+
+ If there is no function corresponding to this block, this meaning
+ of this flag is undefined. */
+
+ unsigned char gcc_compile_flag;
+
+ /* Number of local symbols. */
+
+ int nsyms;
+
+ /* The symbols. If some of them are arguments, then they must be
+ in the order in which we would like to print them. */
+
+ struct symbol *sym[1];
+ };
+
+#define BLOCK_START(bl) (bl)->startaddr
+#define BLOCK_END(bl) (bl)->endaddr
+#define BLOCK_NSYMS(bl) (bl)->nsyms
+#define BLOCK_SYM(bl, n) (bl)->sym[n]
+#define BLOCK_FUNCTION(bl) (bl)->function
+#define BLOCK_SUPERBLOCK(bl) (bl)->superblock
+#define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag
+
+/* Nonzero if symbols of block BL should be sorted alphabetically.
+ Don't sort a block which corresponds to a function. If we did the
+ sorting would have to preserve the order of the symbols for the
+ arguments. */
+
+#define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40 && BLOCK_FUNCTION (bl) == NULL)
\f
+
/* Represent one symbol name; a variable, constant, function or typedef. */
-/* Different name spaces for symbols. Looking up a symbol specifies
- a namespace and ignores symbol definitions in other name spaces.
+/* Different name spaces for symbols. Looking up a symbol specifies a
+ namespace and ignores symbol definitions in other name spaces. */
+
+typedef enum
+ {
+ /* UNDEF_NAMESPACE is used when a namespace has not been discovered or
+ none of the following apply. This usually indicates an error either
+ in the symbol information or in gdb's handling of symbols. */
+
+ UNDEF_NAMESPACE,
+
+ /* VAR_NAMESPACE is the usual namespace. In C, this contains variables,
+ function names, typedef names and enum type values. */
+
+ VAR_NAMESPACE,
+
+ /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names.
+ Thus, if `struct foo' is used in a C program, it produces a symbol named
+ `foo' in the STRUCT_NAMESPACE. */
+
+ STRUCT_NAMESPACE,
+
+ /* LABEL_NAMESPACE may be used for names of labels (for gotos);
+ currently it is not used and labels are not recorded at all. */
+
+ LABEL_NAMESPACE,
- VAR_NAMESPACE is the usual namespace.
- In C, this contains variables, function names, typedef names
- and enum type values.
+ /* Searching namespaces. These overlap with VAR_NAMESPACE, providing
+ some granularity with the search_symbols function. */
- STRUCT_NAMESPACE is used in C to hold struct, union and enum type names.
- Thus, if `struct foo' is used in a C program,
- it produces a symbol named `foo' in the STRUCT_NAMESPACE.
+ /* Everything in VAR_NAMESPACE minus FUNCTIONS_-, TYPES_-, and
+ METHODS_NAMESPACE */
+ VARIABLES_NAMESPACE,
- LABEL_NAMESPACE may be used for names of labels (for gotos);
- currently it is not used and labels are not recorded at all. */
+ /* All functions -- for some reason not methods, though. */
+ FUNCTIONS_NAMESPACE,
-/* For a non-global symbol allocated statically,
- the correct core address cannot be determined by the compiler.
- The compiler puts an index number into the symbol's value field.
- This index number can be matched with the "desc" field of
- an entry in the loader symbol table. */
+ /* All defined types */
+ TYPES_NAMESPACE,
-enum namespace
-{
- UNDEF_NAMESPACE, VAR_NAMESPACE, STRUCT_NAMESPACE, LABEL_NAMESPACE,
-};
+ /* All class methods -- why is this separated out? */
+ METHODS_NAMESPACE
+
+ }
+namespace_enum;
/* An address-class says where to find the value of a symbol. */
enum address_class
-{
- LOC_UNDEF, /* Not used; catches errors */
- LOC_CONST, /* Value is constant int SYMBOL_VALUE, host byteorder */
- LOC_STATIC, /* Value is at fixed address SYMBOL_VALUE_ADDRESS */
- LOC_REGISTER, /* Value is in register */
- LOC_ARG, /* Value is at spec'd offset in arglist */
- LOC_REF_ARG, /* Value address is at spec'd offset in arglist. */
- LOC_REGPARM, /* Value is at spec'd offset in register window */
- LOC_LOCAL, /* Value is at spec'd offset in stack frame */
- LOC_TYPEDEF, /* Value not used; definition in SYMBOL_TYPE
- Symbols in the namespace STRUCT_NAMESPACE
- all have this class. */
- LOC_LABEL, /* Value is address SYMBOL_VALUE_ADDRESS in the code */
- LOC_BLOCK, /* Value is address SYMBOL_VALUE_BLOCK of a
- `struct block'. Function names have this class. */
- LOC_CONST_BYTES, /* Value is a constant byte-sequence pointed to by
- SYMBOL_VALUE_ADDRESS, in target byte order. */
- LOC_LOCAL_ARG, /* Value is arg at spec'd offset in stack frame.
- Differs from LOC_LOCAL in that symbol is an
- argument; differs from LOC_ARG in that we find it
- in the frame (FRAME_LOCALS_ADDRESS), not in the
- arglist (FRAME_ARGS_ADDRESS). Added for i960,
- which passes args in regs then copies to frame. */
-};
+ {
+ /* Not used; catches errors */
+
+ LOC_UNDEF,
+
+ /* Value is constant int SYMBOL_VALUE, host byteorder */
+
+ LOC_CONST,
+
+ /* Value is at fixed address SYMBOL_VALUE_ADDRESS */
+
+ LOC_STATIC,
+
+ /* Value is in register. SYMBOL_VALUE is the register number. */
+
+ LOC_REGISTER,
+
+ /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */
+
+ LOC_ARG,
+
+ /* Value address is at SYMBOL_VALUE offset in arglist. */
+
+ LOC_REF_ARG,
+
+ /* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER
+ except this is an argument. Probably the cleaner way to handle
+ this would be to separate address_class (which would include
+ separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus
+ FRAME_LOCALS_ADDRESS), and an is_argument flag.
+
+ For some symbol formats (stabs, for some compilers at least),
+ the compiler generates two symbols, an argument and a register.
+ In some cases we combine them to a single LOC_REGPARM in symbol
+ reading, but currently not for all cases (e.g. it's passed on the
+ stack and then loaded into a register). */
+
+ LOC_REGPARM,
+
+ /* Value is in specified register. Just like LOC_REGPARM except the
+ register holds the address of the argument instead of the argument
+ itself. This is currently used for the passing of structs and unions
+ on sparc and hppa. It is also used for call by reference where the
+ address is in a register, at least by mipsread.c. */
+
+ LOC_REGPARM_ADDR,
+
+ /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */
+
+ LOC_LOCAL,
+
+ /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace
+ STRUCT_NAMESPACE all have this class. */
+
+ LOC_TYPEDEF,
+
+ /* Value is address SYMBOL_VALUE_ADDRESS in the code */
+
+ LOC_LABEL,
+
+ /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'.
+ In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address
+ of the block. Function names have this class. */
+
+ LOC_BLOCK,
+
+ /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in
+ target byte order. */
+
+ LOC_CONST_BYTES,
+
+ /* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from
+ LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in
+ that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the
+ arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args
+ in regs then copies to frame. */
+
+ LOC_LOCAL_ARG,
+
+ /* Value is at SYMBOL_VALUE offset from the current value of
+ register number SYMBOL_BASEREG. This exists mainly for the same
+ things that LOC_LOCAL and LOC_ARG do; but we need to do this
+ instead because on 88k DWARF gives us the offset from the
+ frame/stack pointer, rather than the offset from the "canonical
+ frame address" used by COFF, stabs, etc., and we don't know how
+ to convert between these until we start examining prologues.
+
+ Note that LOC_BASEREG is much less general than a DWARF expression.
+ We don't need the generality (at least not yet), and storing a general
+ DWARF expression would presumably take up more space than the existing
+ scheme. */
+
+ LOC_BASEREG,
+
+ /* Same as LOC_BASEREG but it is an argument. */
+
+ LOC_BASEREG_ARG,
+
+ /* Value is at fixed address, but the address of the variable has
+ to be determined from the minimal symbol table whenever the
+ variable is referenced.
+ This happens if debugging information for a global symbol is
+ emitted and the corresponding minimal symbol is defined
+ in another object file or runtime common storage.
+ The linker might even remove the minimal symbol if the global
+ symbol is never referenced, in which case the symbol remains
+ unresolved. */
+
+ LOC_UNRESOLVED,
+
+ /* Value is at a thread-specific location calculated by a
+ target-specific method. */
+
+ LOC_THREAD_LOCAL_STATIC,
+
+ /* The variable does not actually exist in the program.
+ The value is ignored. */
+
+ LOC_OPTIMIZED_OUT,
+
+ /* The variable is static, but actually lives at * (address).
+ * I.e. do an extra indirection to get to it.
+ * This is used on HP-UX to get at globals that are allocated
+ * in shared libraries, where references from images other
+ * than the one where the global was allocated are done
+ * with a level of indirection.
+ */
+
+ LOC_INDIRECT
+
+ };
+
+/* Linked list of symbol's live ranges. */
+
+struct range_list
+ {
+ CORE_ADDR start;
+ CORE_ADDR end;
+ struct range_list *next;
+ };
+
+/* Linked list of aliases for a particular main/primary symbol. */
+struct alias_list
+ {
+ struct symbol *sym;
+ struct alias_list *next;
+ };
struct symbol
-{
- /* Symbol name */
- char *name;
- /* Name space code. */
- enum namespace namespace;
- /* Address class */
- enum address_class class;
- /* Data type of value */
- struct type *type;
-
- /* Line number of definition. */
- unsigned short line;
-
- /* constant value, or address if static, or register number,
- or offset in arguments, or offset in stack frame. All of
- these are in host byte order (though what they point to might
- be in target byte order, e.g. LOC_CONST_BYTES). */
- union
- {
- long value; /* for LOC_CONST, LOC_REGISTER, LOC_ARG,
- LOC_REF_ARG, LOC_REGPARM, LOC_LOCAL */
- struct block *block; /* for LOC_BLOCK */
- char *bytes; /* for LOC_CONST_BYTES */
- CORE_ADDR address; /* for LOC_STATIC, LOC_LABEL */
- struct symbol *chain; /* for opaque typedef struct chain */
- }
- value;
-};
+ {
+
+ /* The general symbol info required for all types of symbols. */
+
+ struct general_symbol_info ginfo;
+
+ /* Data type of value */
+
+ struct type *type;
+ /* Name space code. */
+#ifdef __MFC4__
+ /* FIXME: don't conflict with C++'s namespace */
+ /* would be safer to do a global change for all namespace identifiers. */
+#define namespace _namespace
+#endif
+ namespace_enum namespace BYTE_BITFIELD;
+
+ /* Address class */
+
+ enum address_class aclass BYTE_BITFIELD;
+
+ /* Line number of definition. FIXME: Should we really make the assumption
+ that nobody will try to debug files longer than 64K lines? What about
+ machine generated programs? */
+
+ unsigned short line;
+
+ /* Some symbols require an additional value to be recorded on a per-
+ symbol basis. Stash those values here. */
+
+ union
+ {
+ /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */
+ short basereg;
+ }
+ aux_value;
+
+
+ /* Link to a list of aliases for this symbol.
+ Only a "primary/main symbol may have aliases. */
+ struct alias_list *aliases;
+
+ /* List of ranges where this symbol is active. This is only
+ used by alias symbols at the current time. */
+ struct range_list *ranges;
+ };
+
+
+#define SYMBOL_NAMESPACE(symbol) (symbol)->namespace
+#define SYMBOL_CLASS(symbol) (symbol)->aclass
+#define SYMBOL_TYPE(symbol) (symbol)->type
+#define SYMBOL_LINE(symbol) (symbol)->line
+#define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg
+#define SYMBOL_ALIASES(symbol) (symbol)->aliases
+#define SYMBOL_RANGES(symbol) (symbol)->ranges
+\f
/* A partial_symbol records the name, namespace, and address class of
symbols whose types we have not parsed yet. For functions, it also
contains their memory address, so we can find them from a PC value.
Each partial_symbol sits in a partial_symtab, all of which are chained
- on the partial_symtab_list and which points to the corresponding
+ on a partial symtab list and which points to the corresponding
normal symtab once the partial_symtab has been referenced. */
struct partial_symbol
-{
- /* Symbol name */
- char *name;
- /* Name space code. */
- enum namespace namespace;
- /* Address class (for info_symbols) */
- enum address_class class;
- /* Value (only used for static functions currently). Done this
- way so that we can use the struct symbol macros.
- Note that the address of a function is SYMBOL_VALUE_ADDRESS (pst)
- in a partial symbol table, but BLOCK_START (SYMBOL_BLOCK_VALUE (st))
- in a symbol table. */
- union
- {
- long value;
- CORE_ADDR address;
- }
- value;
-};
+ {
+
+ /* The general symbol info required for all types of symbols. */
+
+ struct general_symbol_info ginfo;
+
+ /* Name space code. */
+
+ namespace_enum namespace BYTE_BITFIELD;
+
+ /* Address class (for info_symbols) */
+
+ enum address_class aclass BYTE_BITFIELD;
+
+ };
+
+#define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace
+#define PSYMBOL_CLASS(psymbol) (psymbol)->aclass
\f
-/* Source-file information.
- This describes the relation between source files and line numbers
- and addresses in the program text. */
+
+/* Source-file information. This describes the relation between source files,
+ ine numbers and addresses in the program text. */
struct sourcevector
-{
- int length; /* Number of source files described */
- struct source *source[1]; /* Descriptions of the files */
-};
+ {
+ int length; /* Number of source files described */
+ struct source *source[1]; /* Descriptions of the files */
+ };
/* Each item represents a line-->pc (or the reverse) mapping. This is
somewhat more wasteful of space than one might wish, but since only
the files which are actually debugged are read in to core, we don't
- waste much space.
-
- Each item used to be an int; either minus a line number, or a
- program counter. If it represents a line number, that is the line
- described by the next program counter value. If it is positive, it
- is the program counter at which the code for the next line starts. */
+ waste much space. */
struct linetable_entry
-{
- int line;
- CORE_ADDR pc;
-};
+ {
+ int line;
+ CORE_ADDR pc;
+ };
+
+/* The order of entries in the linetable is significant. They should
+ be sorted by increasing values of the pc field. If there is more than
+ one entry for a given pc, then I'm not sure what should happen (and
+ I not sure whether we currently handle it the best way).
+
+ Example: a C for statement generally looks like this
+
+ 10 0x100 - for the init/test part of a for stmt.
+ 20 0x200
+ 30 0x300
+ 10 0x400 - for the increment part of a for stmt.
+
+ */
struct linetable
-{
- int nitems;
- struct linetable_entry item[1];
-};
+ {
+ int nitems;
+
+ /* Actually NITEMS elements. If you don't like this use of the
+ `struct hack', you can shove it up your ANSI (seriously, if the
+ committee tells us how to do it, we can probably go along). */
+ struct linetable_entry item[1];
+ };
/* All the information on one source file. */
struct source
-{
- char *name; /* Name of file */
- struct linetable contents;
-};
+ {
+ char *name; /* Name of file */
+ struct linetable contents;
+ };
+
+/* How to relocate the symbols from each section in a symbol file.
+ Each struct contains an array of offsets.
+ The ordering and meaning of the offsets is file-type-dependent;
+ typically it is indexed by section numbers or symbol types or
+ something like that.
+
+ To give us flexibility in changing the internal representation
+ of these offsets, the ANOFFSET macro must be used to insert and
+ extract offset values in the struct. */
+
+struct section_offsets
+ {
+ CORE_ADDR offsets[1]; /* As many as needed. */
+ };
+
+#define ANOFFSET(secoff, whichone) (secoff->offsets[whichone])
+
+/* The maximum possible size of a section_offsets table. */
-/* Each source file is represented by a struct symtab.
+#define SIZEOF_SECTION_OFFSETS \
+ (sizeof (struct section_offsets) \
+ + sizeof (((struct section_offsets *) 0)->offsets) * (SECT_OFF_MAX-1))
+
+
+/* Each source file or header is represented by a struct symtab.
These objects are chained through the `next' field. */
struct symtab
{
+
/* Chain of all existing symtabs. */
+
struct symtab *next;
- /* List of all symbol scope blocks for this symtab. */
+
+ /* List of all symbol scope blocks for this symtab. May be shared
+ between different symtabs (and normally is for all the symtabs
+ in a given compilation unit). */
+
struct blockvector *blockvector;
+
/* Table mapping core addresses to line numbers for this file.
- Can be NULL if none. */
+ Can be NULL if none. Never shared between different symtabs. */
+
struct linetable *linetable;
+
+ /* Section in objfile->section_offsets for the blockvector and
+ the linetable. Probably always SECT_OFF_TEXT. */
+
+ int block_line_section;
+
+ /* If several symtabs share a blockvector, exactly one of them
+ should be designated the primary, so that the blockvector
+ is relocated exactly once by objfile_relocate. */
+
+ int primary;
+
/* Name of this source file. */
+
char *filename;
+
/* Directory in which it was compiled, or NULL if we don't know. */
+
char *dirname;
+
/* This component says how to free the data we point to:
free_contents => do a tree walk and free each object.
free_nothing => do nothing; some other symtab will free
- the data this one uses.
- free_linetable => free just the linetable. */
- enum free_code {free_nothing, free_contents, free_linetable}
- free_code;
+ the data this one uses.
+ free_linetable => free just the linetable. FIXME: Is this redundant
+ with the primary field? */
+
+ enum free_code
+ {
+ free_nothing, free_contents, free_linetable
+ }
+ free_code;
+
/* Pointer to one block of storage to be freed, if nonzero. */
/* This is IN ADDITION to the action indicated by free_code. */
+
char *free_ptr;
+
/* Total number of lines found in source file. */
+
int nlines;
- /* Array mapping line number to character position. */
+
+ /* line_charpos[N] is the position of the (N-1)th line of the
+ source file. "position" means something we can lseek() to; it
+ is not guaranteed to be useful any other way. */
+
int *line_charpos;
+
/* Language of this source file. */
+
enum language language;
+
+ /* String that identifies the format of the debugging information, such
+ as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful
+ for automated testing of gdb but may also be information that is
+ useful to the user. */
+
+ char *debugformat;
+
/* String of version information. May be zero. */
+
char *version;
+
/* Full name of file as found by searching the source path.
- 0 if not yet known. */
+ NULL if not yet known. */
+
char *fullname;
- /* Anything extra for this symtab. This is for target machines
- with special debugging info of some sort (which cannot just
- be represented in a normal symtab). */
-#if defined (EXTRA_SYMTAB_INFO)
- EXTRA_SYMTAB_INFO
-#endif
+ /* Object file from which this symbol information was read. */
+
+ struct objfile *objfile;
+
};
+#define BLOCKVECTOR(symtab) (symtab)->blockvector
+#define LINETABLE(symtab) (symtab)->linetable
+\f
+
/* Each source file that has not been fully read in is represented by
a partial_symtab. This contains the information on where in the
executable the debugging symbols for a specific file are, and a
list of names of global symbols which are located in this file.
- They are all chained on partial_symtab_list.
+ They are all chained on partial symtab lists.
Even after the source file has been read into a symtab, the
partial_symtab remains around. They are allocated on an obstack,
psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks-
style execution of a bunch of .o's. */
+
struct partial_symtab
-{
- /* Chain of all existing partial symtabs. */
- struct partial_symtab *next;
- /* Name of the source file which this partial_symtab defines */
- char *filename;
-
- /* Name of the symbol file from which symbols should be read. */
- char *symfile_name;
- /* Address relative to which the symbols in this file are. Need to
- relocate by this amount when reading in symbols from the symbol
- file. */
- CORE_ADDR addr;
- /* Range of text addresses covered by this file; texthigh is the
- beginning of the next section. */
- CORE_ADDR textlow, texthigh;
- /* Array of pointers to all of the partial_symtab's which this one
- depends on. Since this array can only be set to previous or
- the current (?) psymtab, this dependency tree is guaranteed not
- to have any loops. */
- struct partial_symtab **dependencies;
- int number_of_dependencies;
- /* Global symbol list. This list will be sorted after readin to
- improve access. Binary search will be the usual method of
- finding a symbol within it. globals_offset is an integer offset
- within global_psymbols[]. */
- int globals_offset, n_global_syms;
- /* Static symbol list. This list will *not* be sorted after readin;
- to find a symbol in it, exhaustive search must be used. This is
- reasonable because searches through this list will eventually
- lead to either the read in of a files symbols for real (assumed
- to take a *lot* of time; check) or an error (and we don't care
- how long errors take). This is an offset and size within
- static_psymbols[]. */
- int statics_offset, n_static_syms;
- /* Pointer to symtab eventually allocated for this source file, 0 if
- !readin or if we haven't looked for the symtab after it was readin. */
- struct symtab *symtab;
- /* Pointer to function which will read in the symtab corresponding to
- this psymtab. */
- void (*read_symtab) ();
- /* Information that lets read_symtab() locate the part of the symbol table
- that this psymtab corresponds to. This information is private to the
- format-dependent symbol reading routines. For further detail examine
- the various symbol reading modules. Should really be (void *) but is
- (char *) as with other such gdb variables. (FIXME) */
- char *read_symtab_private;
- /* Non-zero if the symtab corresponding to this psymtab has been
- readin */
- unsigned char readin;
-};
+ {
-/* A fast way to get from a psymtab to its symtab (after the first time). */
-#define PSYMTAB_TO_SYMTAB(pst) ((pst)->symtab? \
- (pst)->symtab: \
- psymtab_to_symtab (pst) )
+ /* Chain of all existing partial symtabs. */
-/* This is the list of struct symtab's that gdb considers current. */
+ struct partial_symtab *next;
-struct symtab *symtab_list;
+ /* Name of the source file which this partial_symtab defines */
-/* This is the list of struct partial_symtab's that gdb may need to access */
+ char *filename;
-struct partial_symtab *partial_symtab_list;
+ /* Information about the object file from which symbols should be read. */
-/* This symtab variable specifies the current file for printing source lines */
+ struct objfile *objfile;
-struct symtab *current_source_symtab;
+ /* Set of relocation offsets to apply to each section. */
-/* This is the next line to print for listing source lines. */
+ struct section_offsets *section_offsets;
-int current_source_line;
+ /* Range of text addresses covered by this file; texthigh is the
+ beginning of the next section. */
-#define BLOCKLIST(symtab) (symtab)->blockvector
-#define BLOCKVECTOR(symtab) (symtab)->blockvector
+ CORE_ADDR textlow;
+ CORE_ADDR texthigh;
-#define LINETABLE(symtab) (symtab)->linetable
-\f
-/* Macros normally used to access components of symbol table structures. */
+ /* Array of pointers to all of the partial_symtab's which this one
+ depends on. Since this array can only be set to previous or
+ the current (?) psymtab, this dependency tree is guaranteed not
+ to have any loops. "depends on" means that symbols must be read
+ for the dependencies before being read for this psymtab; this is
+ for type references in stabs, where if foo.c includes foo.h, declarations
+ in foo.h may use type numbers defined in foo.c. For other debugging
+ formats there may be no need to use dependencies. */
-#define BLOCKLIST_NBLOCKS(blocklist) (blocklist)->nblocks
-#define BLOCKLIST_BLOCK(blocklist,n) (blocklist)->block[n]
-#define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks
-#define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n]
+ struct partial_symtab **dependencies;
+
+ int number_of_dependencies;
+
+ /* Global symbol list. This list will be sorted after readin to
+ improve access. Binary search will be the usual method of
+ finding a symbol within it. globals_offset is an integer offset
+ within global_psymbols[]. */
+
+ int globals_offset;
+ int n_global_syms;
+
+ /* Static symbol list. This list will *not* be sorted after readin;
+ to find a symbol in it, exhaustive search must be used. This is
+ reasonable because searches through this list will eventually
+ lead to either the read in of a files symbols for real (assumed
+ to take a *lot* of time; check) or an error (and we don't care
+ how long errors take). This is an offset and size within
+ static_psymbols[]. */
+
+ int statics_offset;
+ int n_static_syms;
+
+ /* Pointer to symtab eventually allocated for this source file, 0 if
+ !readin or if we haven't looked for the symtab after it was readin. */
+
+ struct symtab *symtab;
+
+ /* Pointer to function which will read in the symtab corresponding to
+ this psymtab. */
+
+ void (*read_symtab) PARAMS ((struct partial_symtab *));
+
+ /* Information that lets read_symtab() locate the part of the symbol table
+ that this psymtab corresponds to. This information is private to the
+ format-dependent symbol reading routines. For further detail examine
+ the various symbol reading modules. Should really be (void *) but is
+ (char *) as with other such gdb variables. (FIXME) */
+
+ char *read_symtab_private;
-#define BLOCK_START(bl) (bl)->startaddr
-#define BLOCK_END(bl) (bl)->endaddr
-#define BLOCK_NSYMS(bl) (bl)->nsyms
-#define BLOCK_SYM(bl, n) (bl)->sym[n]
-#define BLOCK_FUNCTION(bl) (bl)->function
-#define BLOCK_SUPERBLOCK(bl) (bl)->superblock
-#define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag
-
-/* Nonzero if symbols of block BL should be sorted alphabetically. */
-#define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40)
-
-#define SYMBOL_NAME(symbol) (symbol)->name
-#define SYMBOL_NAMESPACE(symbol) (symbol)->namespace
-#define SYMBOL_CLASS(symbol) (symbol)->class
-#define SYMBOL_VALUE(symbol) (symbol)->value.value
-#define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->value.address
-#define SYMBOL_VALUE_BYTES(symbol) (symbol)->value.bytes
-#define SYMBOL_BLOCK_VALUE(symbol) (symbol)->value.block
-#define SYMBOL_VALUE_CHAIN(symbol) (symbol)->value.chain
-#define SYMBOL_TYPE(symbol) (symbol)->type
-#define SYMBOL_LINE(symbol) (symbol)->line
-
-#define TYPE_NAME(thistype) (thistype)->name
-#define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
-#define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
-#define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
-#define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
-#define TYPE_MAIN_VARIANT(thistype) (thistype)->main_variant
-#define TYPE_NEXT_VARIANT(thistype) (thistype)->next_variant
-#define TYPE_LENGTH(thistype) (thistype)->length
-#define TYPE_FLAGS(thistype) (thistype)->flags
-#define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
-#define TYPE_CODE(thistype) (thistype)->code
-#define TYPE_NFIELDS(thistype) (thistype)->nfields
-#define TYPE_FIELDS(thistype) (thistype)->fields
-/* C++ */
-#define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
-#define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
-#define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
-#define TYPE_FN_FIELDS(thistype) (thistype)->fn_fields
-#define TYPE_NFN_FIELDS(thistype) (thistype)->nfn_fields
-#define TYPE_NFN_FIELDS_TOTAL(thistype) (thistype)->nfn_fields_total
-#define TYPE_ARG_TYPES(thistype) (thistype)->arg_types
-#define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
-#define TYPE_N_BASECLASSES(thistype) (thistype)->n_baseclasses
-#define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
-#define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
-#define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
-#define BASETYPE_VIA_VIRTUAL(thistype, index) B_TST((thistype)->virtual_field_bits, (index))
-
-#define TYPE_FIELD(thistype, n) (thistype)->fields[n]
-#define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
-#define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
-#define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
-#define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
-#define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
-#define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
-
-#define TYPE_FIELD_PRIVATE_BITS(thistype) (thistype)->private_field_bits
-#define TYPE_FIELD_PROTECTED_BITS(thistype) (thistype)->protected_field_bits
-#define TYPE_FIELD_VIRTUAL_BITS(thistype) (thistype)->virtual_field_bits
-#define SET_TYPE_FIELD_PRIVATE(thistype, n) B_SET ((thistype)->private_field_bits, (n))
-#define SET_TYPE_FIELD_PROTECTED(thistype, n) B_SET ((thistype)->protected_field_bits, (n))
-#define SET_TYPE_FIELD_VIRTUAL(thistype, n) B_SET ((thistype)->virtual_field_bits, (n))
-#define TYPE_FIELD_PRIVATE(thistype, n) B_TST((thistype)->private_field_bits, (n))
-#define TYPE_FIELD_PROTECTED(thistype, n) B_TST((thistype)->protected_field_bits, (n))
-#define TYPE_FIELD_VIRTUAL(thistype, n) B_TST((thistype)->virtual_field_bits, (n))
-
-#define TYPE_HAS_DESTRUCTOR(thistype) ((thistype)->flags & TYPE_FLAG_HAS_DESTRUCTOR)
-#define TYPE_HAS_CONSTRUCTOR(thistype) ((thistype)->flags & TYPE_FLAG_HAS_CONSTRUCTOR)
-
-#define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
-#define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
-
-#define TYPE_FN_FIELDLISTS(thistype) (thistype)->fn_fieldlists
-#define TYPE_FN_FIELDLIST(thistype, n) (thistype)->fn_fieldlists[n]
-#define TYPE_FN_FIELDLIST1(thistype, n) (thistype)->fn_fieldlists[n].fn_fields
-#define TYPE_FN_FIELDLIST_NAME(thistype, n) (thistype)->fn_fieldlists[n].name
-#define TYPE_FN_FIELDLIST_LENGTH(thistype, n) (thistype)->fn_fieldlists[n].length
-
-#define TYPE_FN_FIELD(thistype, n) (thistype)[n]
-#define TYPE_FN_FIELD_NAME(thistype, n) (thistype)[n].name
-#define TYPE_FN_FIELD_TYPE(thistype, n) (thistype)[n].type
-#define TYPE_FN_FIELD_ARGS(thistype, n) TYPE_ARG_TYPES ((thistype)[n].type)
-#define TYPE_FN_FIELD_PHYSNAME(thistype, n) (thistype)[n].physname
-#define TYPE_FN_FIELD_VIRTUAL_P(thistype, n) ((thistype)[n].voffset > 1)
-#define TYPE_FN_FIELD_STATIC_P(thistype, n) ((thistype)[n].voffset == VOFFSET_STATIC)
-#define TYPE_FN_FIELD_VOFFSET(thistype, n) ((thistype)[n].voffset-2)
-#define TYPE_FN_FIELD_FCONTEXT(thistype, n) ((thistype)[n].fcontext)
-
-#define TYPE_FN_PRIVATE_BITS(thistype) (thistype).private_fn_field_bits
-#define TYPE_FN_PROTECTED_BITS(thistype) (thistype).protected_fn_field_bits
-#define SET_TYPE_FN_PRIVATE(thistype, n) B_SET ((thistype).private_fn_field_bits, n)
-#define SET_TYPE_FN_PROTECTED(thistype, n) B_SET ((thistype).protected_fn_field_bits, n)
-#define TYPE_FN_PRIVATE(thistype, n) B_TST ((thistype).private_fn_field_bits, n)
-#define TYPE_FN_PROTECTED(thistype, n) B_TST ((thistype).protected_fn_field_bits, n)
-
-/* The virtual function table is now an array of structures
- which have the form { int16 offset, delta; void *pfn; }.
+ /* Non-zero if the symtab corresponding to this psymtab has been readin */
+
+ unsigned char readin;
+ };
+
+/* A fast way to get from a psymtab to its symtab (after the first time). */
+#define PSYMTAB_TO_SYMTAB(pst) \
+ ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst))
+\f
+
+/* The virtual function table is now an array of structures which have the
+ form { int16 offset, delta; void *pfn; }.
In normal virtual function tables, OFFSET is unused.
DELTA is the amount which is added to the apparent object's base
address in order to point to the actual object to which the
virtual function should be applied.
- PFN is a pointer to the virtual function. */
-
-#define VTBL_FNADDR_OFFSET 2
+ PFN is a pointer to the virtual function.
+
+ Note that this macro is g++ specific (FIXME). */
-/* Macro that yields non-zero value iff NAME is the prefix
- for C++ operator names. If you leave out the parenthesis
- here you will lose!
+#define VTBL_FNADDR_OFFSET 2
+/* Macro that yields non-zero value iff NAME is the prefix for C++ operator
+ names. If you leave out the parenthesis here you will lose!
Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the
- symbol-file and the names in gdb's symbol table. */
-#define OPNAME_PREFIX_P(NAME) ((NAME)[0] == 'o' && (NAME)[1] == 'p' \
- && (NAME)[2] == CPLUS_MARKER)
+ symbol-file and the names in gdb's symbol table.
+ Note that this macro is g++ specific (FIXME). */
+
+#define OPNAME_PREFIX_P(NAME) \
+ ((NAME)[0] == 'o' && (NAME)[1] == 'p' && is_cplus_marker ((NAME)[2]))
+
+/* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl
+ names. Note that this macro is g++ specific (FIXME).
+ '_vt$' is the old cfront-style vtables; '_VT$' is the new
+ style, using thunks (where '$' is really CPLUS_MARKER). */
-#define VTBL_PREFIX_P(NAME) ((NAME)[3] == CPLUS_MARKER \
- && !strncmp ((NAME), "_vt", 3))
+#define VTBL_PREFIX_P(NAME) \
+ ((NAME)[0] == '_' \
+ && (((NAME)[1] == 'V' && (NAME)[2] == 'T') \
+ || ((NAME)[1] == 'v' && (NAME)[2] == 't')) \
+ && is_cplus_marker ((NAME)[3]))
+
+/* Macro that yields non-zero value iff NAME is the prefix for C++ destructor
+ names. Note that this macro is g++ specific (FIXME). */
+
+#define DESTRUCTOR_PREFIX_P(NAME) \
+ ((NAME)[0] == '_' && is_cplus_marker ((NAME)[1]) && (NAME)[2] == '_')
\f
-/* Functions that work on the objects described above */
-
-extern struct symtab *lookup_symtab ();
-extern struct symbol *lookup_symbol ();
-extern struct symbol *lookup_block_symbol ();
-extern int lookup_misc_func ();
-extern void check_stub_type ();
-extern void check_stub_method ();
-extern struct type *lookup_primitive_typename ();
-extern struct type *lookup_typename ();
-extern struct type *lookup_unsigned_typename ();
-extern struct type *lookup_struct ();
-extern struct type *lookup_union ();
-extern struct type *lookup_enum ();
-extern struct type *lookup_struct_elt_type ();
-extern struct type *lookup_pointer_type ();
-extern struct type *lookup_function_type ();
-extern struct type *lookup_basetype_type ();
-extern struct type *create_array_type ();
-extern struct symbol *block_function ();
-extern struct symbol *find_pc_function ();
-extern int find_pc_partial_function ();
-extern void clear_pc_function_cache ();
-extern struct partial_symtab *lookup_partial_symtab ();
-extern struct partial_symtab *find_pc_psymtab ();
-extern struct symtab *find_pc_symtab ();
-extern struct partial_symbol *find_pc_psymbol ();
-extern int find_pc_misc_function ();
-extern int find_pc_line_pc_range ();
-extern char *type_name_no_tag ();
-extern int contained_in();
-
-/* C++ stuff. */
-extern struct type *lookup_reference_type ();
-extern struct type *lookup_member_type ();
-extern struct type *lookup_method_type ();
-extern struct type *lookup_class ();
-extern void smash_to_method_type ();
-void smash_to_member_type (
-#ifdef __STDC__
- struct type *, struct type *, struct type *
+
+/* External variables and functions for the objects described above. */
+
+/* This symtab variable specifies the current file for printing source lines */
+
+extern struct symtab *current_source_symtab;
+
+/* This is the next line to print for listing source lines. */
+
+extern int current_source_line;
+
+/* See the comment in symfile.c about how current_objfile is used. */
+
+extern struct objfile *current_objfile;
+
+/* True if we are nested inside psymtab_to_symtab. */
+
+extern int currently_reading_symtab;
+
+/* From utils.c. */
+extern int demangle;
+extern int asm_demangle;
+
+/* symtab.c lookup functions */
+
+/* lookup a symbol table by source file name */
+
+extern struct symtab *
+ lookup_symtab PARAMS ((char *));
+
+/* lookup a symbol by name (optional block, optional symtab) */
+
+extern struct symbol *
+ lookup_symbol PARAMS ((const char *, const struct block *,
+ const namespace_enum, int *, struct symtab **));
+
+/* lookup a symbol by name, within a specified block */
+
+extern struct symbol *
+ lookup_block_symbol PARAMS ((const struct block *, const char *,
+ const namespace_enum));
+
+/* lookup a [struct, union, enum] by name, within a specified block */
+
+extern struct type *
+ lookup_struct PARAMS ((char *, struct block *));
+
+extern struct type *
+ lookup_union PARAMS ((char *, struct block *));
+
+extern struct type *
+ lookup_enum PARAMS ((char *, struct block *));
+
+/* lookup the function corresponding to the block */
+
+extern struct symbol *
+ block_function PARAMS ((struct block *));
+
+/* from blockframe.c: */
+
+/* lookup the function symbol corresponding to the address */
+
+extern struct symbol *
+ find_pc_function PARAMS ((CORE_ADDR));
+
+/* lookup the function corresponding to the address and section */
+
+extern struct symbol *
+ find_pc_sect_function PARAMS ((CORE_ADDR, asection *));
+
+/* lookup function from address, return name, start addr and end addr */
+
+extern int
+find_pc_partial_function PARAMS ((CORE_ADDR, char **,
+ CORE_ADDR *, CORE_ADDR *));
+
+extern void
+clear_pc_function_cache PARAMS ((void));
+
+extern int
+find_pc_sect_partial_function PARAMS ((CORE_ADDR, asection *,
+ char **, CORE_ADDR *, CORE_ADDR *));
+
+/* from symtab.c: */
+
+/* lookup partial symbol table by filename */
+
+extern struct partial_symtab *
+ lookup_partial_symtab PARAMS ((char *));
+
+/* lookup partial symbol table by address */
+
+extern struct partial_symtab *
+ find_pc_psymtab PARAMS ((CORE_ADDR));
+
+/* lookup partial symbol table by address and section */
+
+extern struct partial_symtab *
+ find_pc_sect_psymtab PARAMS ((CORE_ADDR, asection *));
+
+/* lookup full symbol table by address */
+
+extern struct symtab *
+ find_pc_symtab PARAMS ((CORE_ADDR));
+
+/* lookup full symbol table by address and section */
+
+extern struct symtab *
+ find_pc_sect_symtab PARAMS ((CORE_ADDR, asection *));
+
+/* lookup partial symbol by address */
+
+extern struct partial_symbol *
+ find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR));
+
+/* lookup partial symbol by address and section */
+
+extern struct partial_symbol *
+ find_pc_sect_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR, asection *));
+
+extern int
+find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *));
+
+extern int
+contained_in PARAMS ((struct block *, struct block *));
+
+extern void
+reread_symbols PARAMS ((void));
+
+extern struct type *
+ lookup_transparent_type PARAMS ((const char *));
+
+
+/* Macro for name of symbol to indicate a file compiled with gcc. */
+#ifndef GCC_COMPILED_FLAG_SYMBOL
+#define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled."
#endif
- );
-extern struct type *allocate_stub_method ();
-/* end of C++ stuff. */
-
-extern void free_all_symtabs ();
-extern void free_all_psymtabs ();
-extern void free_inclink_symtabs ();
-extern void reread_symbols ();
-
-extern struct type *builtin_type_void;
-extern struct type *builtin_type_char;
-extern struct type *builtin_type_short;
-extern struct type *builtin_type_int;
-extern struct type *builtin_type_long;
-extern struct type *builtin_type_unsigned_char;
-extern struct type *builtin_type_unsigned_short;
-extern struct type *builtin_type_unsigned_int;
-extern struct type *builtin_type_unsigned_long;
-extern struct type *builtin_type_float;
-extern struct type *builtin_type_double;
-extern struct type *builtin_type_long_double;
-extern struct type *builtin_type_complex;
-extern struct type *builtin_type_double_complex;
-/* This type represents a type that was unrecognized in symbol
- read-in. */
-extern struct type *builtin_type_error;
-
-extern struct type *builtin_type_long_long;
-extern struct type *builtin_type_unsigned_long_long;
-
-/* Modula-2 types */
-extern struct type *builtin_type_m2_char;
-extern struct type *builtin_type_m2_int;
-extern struct type *builtin_type_m2_card;
-extern struct type *builtin_type_m2_real;
-extern struct type *builtin_type_m2_bool;
-
-/* LONG_LONG is defined if the host has "long long". */
-#ifdef LONG_LONG
-#define BUILTIN_TYPE_LONGEST builtin_type_long_long
-#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long_long
-/* This should not be a typedef, because "unsigned LONGEST" needs
- to work. */
-#define LONGEST long long
-
-#else /* not LONG_LONG. */
-
-#define BUILTIN_TYPE_LONGEST builtin_type_long
-#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long
-#define LONGEST long
-
-#endif /* not LONG_LONG. */
+
+/* Macro for name of symbol to indicate a file compiled with gcc2. */
+#ifndef GCC2_COMPILED_FLAG_SYMBOL
+#define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled."
+#endif
+
+/* Functions for dealing with the minimal symbol table, really a misc
+ address<->symbol mapping for things we don't have debug symbols for. */
+
+extern void prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR,
+ enum minimal_symbol_type,
+ struct objfile *));
+
+extern struct minimal_symbol *prim_record_minimal_symbol_and_info
+ PARAMS ((const char *, CORE_ADDR,
+ enum minimal_symbol_type,
+ char *info, int section,
+ asection * bfd_section,
+ struct objfile *));
+
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+extern CORE_ADDR find_stab_function_addr PARAMS ((char *,
+ struct partial_symtab *,
+ struct objfile *));
+#endif
+
+extern struct minimal_symbol *
+ lookup_minimal_symbol PARAMS ((const char *, const char *, struct objfile *));
+
+extern struct minimal_symbol *
+ lookup_minimal_symbol_text PARAMS ((const char *, const char *, struct objfile *));
+
+struct minimal_symbol *
+ lookup_minimal_symbol_solib_trampoline PARAMS ((const char *,
+ const char *,
+ struct objfile *));
+
+extern struct minimal_symbol *
+ lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR));
+
+extern struct minimal_symbol *
+ lookup_minimal_symbol_by_pc_section PARAMS ((CORE_ADDR, asection *));
+
+extern struct minimal_symbol *
+ lookup_solib_trampoline_symbol_by_pc PARAMS ((CORE_ADDR));
+
+extern CORE_ADDR
+ find_solib_trampoline_target PARAMS ((CORE_ADDR));
+
+extern void
+init_minimal_symbol_collection PARAMS ((void));
+
+extern void
+discard_minimal_symbols PARAMS ((int));
+
+extern void
+install_minimal_symbols PARAMS ((struct objfile *));
+
+/* Sort all the minimal symbols in OBJFILE. */
+
+extern void msymbols_sort PARAMS ((struct objfile * objfile));
struct symtab_and_line
-{
- struct symtab *symtab;
- int line;
- CORE_ADDR pc;
- CORE_ADDR end;
-};
+ {
+ struct symtab *symtab;
+ asection *section;
+ /* Line number. Line numbers start at 1 and proceed through symtab->nlines.
+ 0 is never a valid line number; it is used to indicate that line number
+ information is not available. */
+ int line;
+
+ CORE_ADDR pc;
+ CORE_ADDR end;
+ };
+
+#define INIT_SAL(sal) { \
+ (sal)->symtab = 0; \
+ (sal)->section = 0; \
+ (sal)->line = 0; \
+ (sal)->pc = 0; \
+ (sal)->end = 0; \
+}
struct symtabs_and_lines
-{
- struct symtab_and_line *sals;
- int nelts;
-};
+ {
+ struct symtab_and_line *sals;
+ int nelts;
+ };
+\f
+
+
+/* Some types and macros needed for exception catchpoints.
+ Can't put these in target.h because symtab_and_line isn't
+ known there. This file will be included by breakpoint.c,
+ hppa-tdep.c, etc. */
+
+/* Enums for exception-handling support */
+enum exception_event_kind
+ {
+ EX_EVENT_THROW,
+ EX_EVENT_CATCH
+ };
+
+/* Type for returning info about an exception */
+struct exception_event_record
+ {
+ enum exception_event_kind kind;
+ struct symtab_and_line throw_sal;
+ struct symtab_and_line catch_sal;
+ /* This may need to be extended in the future, if
+ some platforms allow reporting more information,
+ such as point of rethrow, type of exception object,
+ type expected by catch clause, etc. */
+ };
+
+#define CURRENT_EXCEPTION_KIND (current_exception_event->kind)
+#define CURRENT_EXCEPTION_CATCH_SAL (current_exception_event->catch_sal)
+#define CURRENT_EXCEPTION_CATCH_LINE (current_exception_event->catch_sal.line)
+#define CURRENT_EXCEPTION_CATCH_FILE (current_exception_event->catch_sal.symtab->filename)
+#define CURRENT_EXCEPTION_CATCH_PC (current_exception_event->catch_sal.pc)
+#define CURRENT_EXCEPTION_THROW_SAL (current_exception_event->throw_sal)
+#define CURRENT_EXCEPTION_THROW_LINE (current_exception_event->throw_sal.line)
+#define CURRENT_EXCEPTION_THROW_FILE (current_exception_event->throw_sal.symtab->filename)
+#define CURRENT_EXCEPTION_THROW_PC (current_exception_event->throw_sal.pc)
+\f
-/* Given a pc value, return line number it is in.
- Second arg nonzero means if pc is on the boundary
- use the previous statement's line number. */
+/* Given a pc value, return line number it is in. Second arg nonzero means
+ if pc is on the boundary use the previous statement's line number. */
-struct symtab_and_line find_pc_line ();
+extern struct symtab_and_line
+find_pc_line PARAMS ((CORE_ADDR, int));
+
+/* Same function, but specify a section as well as an address */
+
+extern struct symtab_and_line
+find_pc_sect_line PARAMS ((CORE_ADDR, asection *, int));
+
+/* Given an address, return the nearest symbol at or below it in memory.
+ Optionally return the symtab it's from through 2nd arg, and the
+ address in inferior memory of the symbol through 3rd arg. */
+
+extern struct symbol *
+ find_addr_symbol PARAMS ((CORE_ADDR, struct symtab **, CORE_ADDR *));
/* Given a symtab and line number, return the pc there. */
-extern CORE_ADDR find_line_pc ();
-extern int find_line_pc_range ();
-/* Given a string, return the line specified by it.
- For commands like "list" and "breakpoint". */
+extern int
+find_line_pc PARAMS ((struct symtab *, int, CORE_ADDR *));
+
+extern int
+find_line_pc_range PARAMS ((struct symtab_and_line,
+ CORE_ADDR *, CORE_ADDR *));
+
+extern void
+resolve_sal_pc PARAMS ((struct symtab_and_line *));
-struct symtabs_and_lines decode_line_spec ();
-struct symtabs_and_lines decode_line_spec_1 ();
-struct symtabs_and_lines decode_line_1 ();
+/* Given a string, return the line specified by it. For commands like "list"
+ and "breakpoint". */
+
+extern struct symtabs_and_lines
+decode_line_spec PARAMS ((char *, int));
+
+extern struct symtabs_and_lines
+decode_line_spec_1 PARAMS ((char *, int));
+
+extern struct symtabs_and_lines
+decode_line_1 PARAMS ((char **, int, struct symtab *, int, char ***));
/* Symmisc.c */
-void free_symtab ();
+
+void
+maintenance_print_symbols PARAMS ((char *, int));
+
+void
+maintenance_print_psymbols PARAMS ((char *, int));
+
+void
+maintenance_print_msymbols PARAMS ((char *, int));
+
+void
+maintenance_print_objfiles PARAMS ((char *, int));
+
+void
+maintenance_check_symtabs PARAMS ((char *, int));
+
+/* maint.c */
+
+void
+maintenance_print_statistics PARAMS ((char *, int));
+
+extern void
+free_symtab PARAMS ((struct symtab *));
/* Symbol-reading stuff in symfile.c and solib.c. */
-struct symtab *psymtab_to_symtab ();
-void clear_solib ();
-void symbol_file_add ();
+
+extern struct symtab *
+ psymtab_to_symtab PARAMS ((struct partial_symtab *));
+
+extern void
+clear_solib PARAMS ((void));
+
+extern struct objfile *
+ symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int, int, int));
/* source.c */
-int identify_source_line ();
-void print_source_lines ();
-void forget_cached_source_info (
-#ifdef __STDC__
- void
-#endif
- );
-void select_source_symtab (
-#ifdef __STDC__
- struct symtab *
-#endif
- );
-char **make_symbol_completion_list ();
+extern int
+identify_source_line PARAMS ((struct symtab *, int, int, CORE_ADDR));
+
+extern void
+print_source_lines PARAMS ((struct symtab *, int, int, int));
-/* Maximum and minimum values of built-in types */
-#define MAX_OF_TYPE(t) \
- TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) : MAX_OF_SIZE(TYPE_LENGTH(t))
+extern void
+forget_cached_source_info PARAMS ((void));
+
+extern void
+select_source_symtab PARAMS ((struct symtab *));
+
+extern char **make_symbol_completion_list PARAMS ((char *, char *));
+
+extern struct symbol **
+ make_symbol_overload_list PARAMS ((struct symbol *));
+
+/* symtab.c */
+
+extern struct partial_symtab *
+ find_main_psymtab PARAMS ((void));
+
+/* blockframe.c */
+
+extern struct blockvector *
+ blockvector_for_pc PARAMS ((CORE_ADDR, int *));
+
+extern struct blockvector *
+ blockvector_for_pc_sect PARAMS ((CORE_ADDR, asection *, int *,
+ struct symtab *));
+
+/* symfile.c */
+
+extern void
+clear_symtab_users PARAMS ((void));
+
+extern enum language
+deduce_language_from_filename PARAMS ((char *));
+
+/* symtab.c */
+
+extern int
+in_prologue PARAMS ((CORE_ADDR pc, CORE_ADDR func_start));
+
+extern struct symbol *
+ fixup_symbol_section PARAMS ((struct symbol *, struct objfile *));
+
+/* Symbol searching */
+
+/* When using search_symbols, a list of the following structs is returned.
+ Callers must free the search list using free_symbol_search! */
+struct symbol_search
+ {
+ /* The block in which the match was found. Could be, for example,
+ STATIC_BLOCK or GLOBAL_BLOCK. */
+ int block;
+
+ /* Information describing what was found.
+
+ If symtab abd symbol are NOT NULL, then information was found
+ for this match. */
+ struct symtab *symtab;
+ struct symbol *symbol;
+
+ /* If msymbol is non-null, then a match was made on something for
+ which only minimal_symbols exist. */
+ struct minimal_symbol *msymbol;
+
+ /* A link to the next match, or NULL for the end. */
+ struct symbol_search *next;
+ };
-#define MIN_OF_TYPE(t) \
- TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) : MIN_OF_SIZE(TYPE_LENGTH(t))
+extern void search_symbols PARAMS ((char *, namespace_enum, int, char **, struct symbol_search **));
+extern void free_search_symbols PARAMS ((struct symbol_search *));
-#endif /* symtab.h not already included. */
+#endif /* !defined(SYMTAB_H) */
projects / thirdparty / binutils-gdb.git / blobdiff