+ sizeof (((struct section_offsets *) 0)->offsets) * ((n)-1))
/* Each source file or header is represented by a struct symtab.
+ The name "symtab" is historical, another name for it is "filetab".
These objects are chained through the `next' field. */
struct symtab
struct symtab *next;
- /* 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). */
+ /* Backlink to containing compunit symtab. */
- const struct blockvector *blockvector;
+ struct compunit_symtab *compunit_symtab;
/* Table mapping core addresses to line numbers for this file.
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. */
-
- unsigned int primary : 1;
-
- /* Symtab has been compiled with both optimizations and debug info so that
- GDB may stop skipping prologues as variables locations are valid already
- at function entry points. */
-
- unsigned int locations_valid : 1;
-
- /* DWARF unwinder for this CU is valid even for epilogues (PC at the return
- instruction). This is supported by GCC since 4.5.0. */
-
- unsigned int epilogue_unwind_valid : 1;
-
- /* The macro table for this symtab. Like the blockvector, this
- may be shared between different symtabs --- and normally is for
- all the symtabs in a given compilation unit. */
- struct macro_table *macro_table;
-
/* Name of this source file. This pointer is never NULL. */
const char *filename;
- /* Directory in which it was compiled, or NULL if we don't know. */
-
- const char *dirname;
-
/* Total number of lines found in source file. */
int nlines;
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
+ /* Full name of file as found by searching the source path.
+ NULL if not yet known. */
+
+ char *fullname;
+};
+
+#define SYMTAB_COMPUNIT(symtab) ((symtab)->compunit_symtab)
+#define SYMTAB_LINETABLE(symtab) ((symtab)->linetable)
+#define SYMTAB_LANGUAGE(symtab) ((symtab)->language)
+#define SYMTAB_BLOCKVECTOR(symtab) \
+ COMPUNIT_BLOCKVECTOR (SYMTAB_COMPUNIT (symtab))
+#define SYMTAB_OBJFILE(symtab) \
+ COMPUNIT_OBJFILE (SYMTAB_COMPUNIT (symtab))
+#define SYMTAB_PSPACE(symtab) (SYMTAB_OBJFILE (symtab)->pspace)
+#define SYMTAB_DIRNAME(symtab) \
+ COMPUNIT_DIRNAME (SYMTAB_COMPUNIT (symtab))
+
+typedef struct symtab *symtab_ptr;
+DEF_VEC_P (symtab_ptr);
+
+/* Compunit symtabs contain the actual "symbol table", aka blockvector, as well
+ as the list of all source files (what gdb has historically associated with
+ the term "symtab").
+ Additional information is recorded here that is common to all symtabs in a
+ compilation unit (DWARF or otherwise).
+
+ Example:
+ For the case of a program built out of these files:
+
+ foo.c
+ foo1.h
+ foo2.h
+ bar.c
+ foo1.h
+ bar.h
+
+ This is recorded as:
+
+ objfile -> foo.c(cu) -> bar.c(cu) -> NULL
+ | |
+ v v
+ foo.c bar.c
+ | |
+ v v
+ foo1.h foo1.h
+ | |
+ v v
+ foo2.h bar.h
+ | |
+ v v
+ NULL NULL
+
+ where "foo.c(cu)" and "bar.c(cu)" are struct compunit_symtab objects,
+ and the files foo.c, etc. are struct symtab objects. */
+
+struct compunit_symtab
+{
+ /* Unordered chain of all compunit symtabs of this objfile. */
+ struct compunit_symtab *next;
+
+ /* Object file from which this symtab information was read. */
+ struct objfile *objfile;
+
+ /* Name of the symtab.
+ This is *not* intended to be a usable filename, and is
+ for debugging purposes only. */
+ const char *name;
+
+ /* Unordered list of file symtabs, except that by convention the "main"
+ source file (e.g., .c, .cc) is guaranteed to be first.
+ Each symtab is a file, either the "main" source file (e.g., .c, .cc)
+ or header (e.g., .h). */
+ struct symtab *filetabs;
+
+ /* Last entry in FILETABS list.
+ Subfiles are added to the end of the list so they accumulate in order,
+ with the main source subfile living at the front.
+ The main reason is so that the main source file symtab is at the head
+ of the list, and the rest appear in order for debugging convenience. */
+ struct symtab *last_filetab;
+
+ /* Non-NULL 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. */
-
const char *debugformat;
- /* String of producer version information. May be zero. */
-
+ /* String of producer version information, or NULL if we don't know. */
const char *producer;
- /* Full name of file as found by searching the source path.
- NULL if not yet known. */
+ /* Directory in which it was compiled, or NULL if we don't know. */
+ const char *dirname;
- char *fullname;
+ /* List of all symbol scope blocks for this symtab. It is shared among
+ all symtabs in a given compilation unit. */
+ const struct blockvector *blockvector;
- /* Object file from which this symbol information was read. */
+ /* Section in objfile->section_offsets for the blockvector and
+ the linetable. Probably always SECT_OFF_TEXT. */
+ int block_line_section;
- struct objfile *objfile;
+ /* Symtab has been compiled with both optimizations and debug info so that
+ GDB may stop skipping prologues as variables locations are valid already
+ at function entry points. */
+ unsigned int locations_valid : 1;
- /* struct call_site entries for this compilation unit or NULL. */
+ /* DWARF unwinder for this CU is valid even for epilogues (PC at the return
+ instruction). This is supported by GCC since 4.5.0. */
+ unsigned int epilogue_unwind_valid : 1;
+ /* struct call_site entries for this compilation unit or NULL. */
htab_t call_site_htab;
+ /* The macro table for this symtab. Like the blockvector, this
+ is shared between different symtabs in a given compilation unit.
+ It's debatable whether it *should* be shared among all the symtabs in
+ the given compilation unit, but it currently is. */
+ struct macro_table *macro_table;
+
/* If non-NULL, then this points to a NULL-terminated vector of
- included symbol tables. When searching the static or global
- block of this symbol table, the corresponding block of all
- included symbol tables will also be searched. Note that this
+ included compunits. When searching the static or global
+ block of this compunit, the corresponding block of all
+ included compunits will also be searched. Note that this
list must be flattened -- the symbol reader is responsible for
ensuring that this vector contains the transitive closure of all
- included symbol tables. */
-
- struct symtab **includes;
+ included compunits. */
+ struct compunit_symtab **includes;
- /* If this is an included symbol table, this points to one includer
- of the table. This user is considered the canonical symbol table
- containing this one. An included symbol table may itself be
+ /* If this is an included compunit, this points to one includer
+ of the table. This user is considered the canonical compunit
+ containing this one. An included compunit may itself be
included by another. */
-
- struct symtab *user;
+ struct compunit_symtab *user;
};
-#define SYMTAB_BLOCKVECTOR(symtab) ((symtab)->blockvector)
-#define SYMTAB_LINETABLE(symtab) ((symtab)->linetable)
-#define SYMTAB_OBJFILE(symtab) ((symtab)->objfile)
-#define SYMTAB_PSPACE(symtab) (SYMTAB_OBJFILE (symtab)->pspace)
-#define SYMTAB_DIRNAME(symtab) ((symtab)->dirname)
+#define COMPUNIT_OBJFILE(cust) ((cust)->objfile)
+#define COMPUNIT_FILETABS(cust) ((cust)->filetabs)
+#define COMPUNIT_DEBUGFORMAT(cust) ((cust)->debugformat)
+#define COMPUNIT_PRODUCER(cust) ((cust)->producer)
+#define COMPUNIT_DIRNAME(cust) ((cust)->dirname)
+#define COMPUNIT_BLOCKVECTOR(cust) ((cust)->blockvector)
+#define COMPUNIT_BLOCK_LINE_SECTION(cust) ((cust)->block_line_section)
+#define COMPUNIT_LOCATIONS_VALID(cust) ((cust)->locations_valid)
+#define COMPUNIT_EPILOGUE_UNWIND_VALID(cust) ((cust)->epilogue_unwind_valid)
+#define COMPUNIT_CALL_SITE_HTAB(cust) ((cust)->call_site_htab)
+#define COMPUNIT_MACRO_TABLE(cust) ((cust)->macro_table)
-/* Call this to set the "primary" field in struct symtab. */
-extern void set_symtab_primary (struct symtab *, int primary);
+/* Iterate over all file tables (struct symtab) within a compunit. */
-typedef struct symtab *symtab_ptr;
-DEF_VEC_P (symtab_ptr);
+#define ALL_COMPUNIT_FILETABS(cu, s) \
+ for ((s) = (cu) -> filetabs; (s) != NULL; (s) = (s) -> next)
+
+/* Return the primary symtab of CUST. */
+
+extern struct symtab *
+ compunit_primary_filetab (const struct compunit_symtab *cust);
+
+/* Return the language of CUST. */
+
+extern enum language compunit_language (const struct compunit_symtab *cust);
+
+typedef struct compunit_symtab *compunit_symtab_ptr;
+DEF_VEC_P (compunit_symtab_ptr);
\f
/* lookup full symbol table by address. */
-extern struct symtab *find_pc_symtab (CORE_ADDR);
+extern struct compunit_symtab *find_pc_compunit_symtab (CORE_ADDR);
/* lookup full symbol table by address and section. */
-extern struct symtab *find_pc_sect_symtab (CORE_ADDR, struct obj_section *);
+extern struct compunit_symtab *
+ find_pc_sect_compunit_symtab (CORE_ADDR, struct obj_section *);
extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *);
int (*callback) (struct symtab *symtab,
void *data),
void *data,
- struct symtab *first,
- struct symtab *after_last);
+ struct compunit_symtab *first,
+ struct compunit_symtab *after_last);
void iterate_over_symtabs (const char *name,
int (*callback) (struct symtab *symtab,
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