/* Read AIX xcoff symbol tables and convert to internal format, for GDB.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
Free Software Foundation, Inc.
Derived from coffread.c, dbxread.c, and a lot of hacking.
Contributed by IBM Corporation.
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. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-/* Native only: Need struct tbtable in <sys/debug.h> from host, and
- need xcoff_add_toc_to_loadinfo in rs6000-tdep.c from target.
- need xcoff_init_loadinfo ditto.
- However, if you grab <sys/debug.h> and make it available on your
- host, and define FAKING_RS6000, then this code will compile. */
+/* RS/6000 and PowerPC only:
+ Needs xcoff_add_toc_to_loadinfo and xcoff_init_loadinfo in
+ rs6000-tdep.c from target.
+ However, if you define FAKING_RS6000, then this code will link with
+ any target. */
#include "defs.h"
#include "bfd.h"
-/* AIX XCOFF names have a preceeding dot `.' */
-#define NAMES_HAVE_DOT 1
-
#include <sys/types.h>
#include <fcntl.h>
#include <ctype.h>
+#include "gdb_string.h"
-#include "obstack.h"
#include <sys/param.h>
#ifndef NO_SYS_FILE
#include <sys/file.h>
#endif
-#include <sys/stat.h>
-#include <sys/debug.h>
+#include "gdb_stat.h"
+
+#include "coff/internal.h"
+#include "libcoff.h" /* FIXME, internal data from BFD */
+#include "coff/rs6000.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "objfiles.h"
#include "buildsym.h"
#include "stabsread.h"
-#include "gdb-stabs.h"
+#include "expression.h"
+#include "language.h" /* Needed inside partial-stab.h */
#include "complaints.h"
-#include "coff/internal.h" /* FIXME, internal data from BFD */
-#include "libcoff.h" /* FIXME, internal data from BFD */
-#include "coff/rs6000.h" /* FIXME, raw file-format guts of xcoff */
+#include "gdb-stabs.h"
+
+/* For interface with stabsread.c. */
+#include "aout/stab_gnu.h"
+
+/* For interface with partial-stab.h. */
+#define N_UNDF 0 /* Undefined symbol */
+#undef N_ABS
+#define N_ABS 2
+#define N_TEXT 4 /* Text sym -- defined at offset in text seg */
+#define N_DATA 6 /* Data sym -- defined at offset in data seg */
+#define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg */
+#define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink) */
+#define N_FN 0x1f /* File name of .o file */
+#define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh) */
+/* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT,
+ N_DATA, or N_BSS. When the low-order bit of other types is set,
+ (e.g. N_WARNING versus N_FN), they are two different types. */
+#define N_EXT 1 /* External symbol (as opposed to local-to-this-file) */
+#define N_INDR 0x0a
+
+/* The following symbols refer to set elements.
+ All the N_SET[ATDB] symbols with the same name form one set.
+ Space is allocated for the set in the text section, and each set
+ elements value is stored into one word of the space.
+ The first word of the space is the length of the set (number of elements).
+
+ The address of the set is made into an N_SETV symbol
+ whose name is the same as the name of the set.
+ This symbol acts like a N_DATA global symbol
+ in that it can satisfy undefined external references. */
+
+/* These appear as input to LD, in a .o file. */
+#define N_SETA 0x14 /* Absolute set element symbol */
+#define N_SETT 0x16 /* Text set element symbol */
+#define N_SETD 0x18 /* Data set element symbol */
+#define N_SETB 0x1A /* Bss set element symbol */
+
+/* This is output from LD. */
+#define N_SETV 0x1C /* Pointer to set vector in data area. */
+\f
+/* We put a pointer to this structure in the read_symtab_private field
+ of the psymtab. */
+struct symloc {
-/* Define this if you want gdb use the old xcoff symbol processing. This
- way it won't use common `define_symbol()' function and Sun dbx stab
- string grammar. And likely it won't be able to do G++ debugging. */
+ /* First symbol number for this file. */
-/* #define NO_DEFINE_SYMBOL 1 */
+ int first_symnum;
-/* Define this if you want gdb to ignore typdef stabs. This was needed for
- one of Transarc, to reduce the size of the symbol table. Types won't be
- recognized, but tag names will be. */
+ /* Number of symbols in the section of the symbol table devoted to
+ this file's symbols (actually, the section bracketed may contain
+ more than just this file's symbols). If numsyms is 0, the only
+ reason for this thing's existence is the dependency list. Nothing
+ else will happen when it is read in. */
-/* #define NO_TYPEDEFS 1 */
+ int numsyms;
+ /* Position of the start of the line number information for this psymtab. */
+ unsigned int lineno_off;
+};
+
+/* Remember what we deduced to be the source language of this psymtab. */
+
+static enum language psymtab_language = language_unknown;
+
+\f
/* Simplified internal version of coff symbol table information */
struct coff_symbol {
char *c_name;
int c_symnum; /* symbol number of this entry */
- int c_nsyms; /* 0 if syment only, 1 if syment + auxent */
+ int c_naux; /* 0 if syment only, 1 if syment + auxent */
long c_value;
- int c_sclass;
+ unsigned char c_sclass;
int c_secnum;
unsigned int c_type;
};
-/* The COFF line table, in raw form. */
-static char *linetab = NULL; /* Its actual contents */
-static long linetab_offset; /* Its offset in the file */
-static unsigned long linetab_size; /* Its size */
-
/* last function's saved coff symbol `cs' */
static struct coff_symbol fcn_cs_saved;
static CORE_ADDR first_object_file_end;
-/* pointer to the string table */
-static char *strtbl;
-
-/* length of the string table */
-static int strtbl_len;
-
-/* pointer to debug section */
-static char *debugsec;
-
-/* pointer to the a.out symbol table */
-static char *symtbl;
-
/* initial symbol-table-debug-string vector length */
#define INITIAL_STABVECTOR_LENGTH 40
int within_function;
-/* Local variables that hold the shift and mask values for the
- COFF file that we are currently reading. These come back to us
- from BFD, and are referenced by their macro names, as well as
- internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF
- macros from ../internalcoff.h . */
-
-static unsigned local_n_btshft;
-static unsigned local_n_tmask;
-
-#undef N_BTSHFT
-#define N_BTSHFT local_n_btshft
-#undef N_TMASK
-#define N_TMASK local_n_tmask
-
-/* Local variables that hold the sizes in the file of various COFF structures.
- (We only need to know this to read them from the file -- BFD will then
- translate the data in them, into `internal_xxx' structs in the right
- byte order, alignment, etc.) */
+/* Size of a COFF symbol. I think it is always 18, so I'm not sure
+ there is any reason not to just use a #define, but might as well
+ ask BFD for the size and store it here, I guess. */
static unsigned local_symesz;
struct coff_symfile_info {
file_ptr min_lineno_offset; /* Where in file lowest line#s are */
file_ptr max_lineno_offset; /* 1+last byte of line#s in file */
-};
-static struct complaint rsym_complaint =
- {"Non-stab C_RSYM `%s' needs special handling", 0, 0};
+ /* Pointer to the string table. */
+ char *strtbl;
+
+ /* Pointer to debug section. */
+ char *debugsec;
+
+ /* Pointer to the a.out symbol table. */
+ char *symtbl;
+
+ /* Number of symbols in symtbl. */
+ int symtbl_num_syms;
+};
static struct complaint storclass_complaint =
{"Unexpected storage class: %d", 0, 0};
static struct complaint bf_notfound_complaint =
{"line numbers off, `.bf' symbol not found", 0, 0};
+static struct complaint ef_complaint =
+ {"Mismatched .ef symbol ignored starting at symnum %d", 0, 0};
+
+static struct complaint eb_complaint =
+ {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0};
+
static void
enter_line_range PARAMS ((struct subfile *, unsigned, unsigned,
CORE_ADDR, CORE_ADDR, unsigned *));
static void
-free_debugsection PARAMS ((void));
-
-static int
-init_debugsection PARAMS ((bfd *));
-
-static int
init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *));
static void
static void
xcoff_new_init PARAMS ((struct objfile *));
-#ifdef __STDC__
-struct section_offset;
-#endif
-
-static void
-xcoff_symfile_read PARAMS ((struct objfile *, struct section_offset *, int));
-
static void
xcoff_symfile_finish PARAMS ((struct objfile *));
static struct section_offsets *
xcoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
-static int
-init_lineno PARAMS ((bfd *, file_ptr, int));
-
static void
find_linenos PARAMS ((bfd *, sec_ptr, PTR));
+static char *
+coff_getfilename PARAMS ((union internal_auxent *, struct objfile *));
+
+static void
+read_symbol PARAMS ((struct internal_syment *, int));
+
static int
-read_symbol_lineno PARAMS ((char *, int));
+read_symbol_lineno PARAMS ((int));
static int
-read_symbol_nvalue PARAMS ((char *, int));
+read_symbol_nvalue PARAMS ((int));
static struct symbol *
process_xcoff_symbol PARAMS ((struct coff_symbol *, struct objfile *));
static void
-read_xcoff_symtab PARAMS ((struct objfile *, int));
+read_xcoff_symtab PARAMS ((struct partial_symtab *));
static void
add_stab_to_list PARAMS ((char *, struct pending_stabs **));
-static void
-sort_syms PARAMS ((void));
-
-static int
-compare_symbols PARAMS ((const void *, const void *));
-
-/* Call sort_syms to sort alphabetically
- the symbols of each block of each symtab. */
-
-static int
-compare_symbols (s1p, s2p)
- const PTR s1p;
- const PTR s2p;
-{
- /* Names that are less should come first. */
- register struct symbol **s1 = (struct symbol **) s1p;
- register struct symbol **s2 = (struct symbol **) s2p;
- register int namediff = STRCMP (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2));
- if (namediff != 0)
- return namediff;
-
- /* For symbols of the same name, registers should come first. */
- return ((SYMBOL_CLASS (*s2) == LOC_REGISTER)
- - (SYMBOL_CLASS (*s1) == LOC_REGISTER));
-}
+\f
+/* Translate from a COFF section number (target_index) to a SECT_OFF_*
+ code. */
+static int secnum_to_section PARAMS ((int, struct objfile *));
+struct find_targ_sec_arg {
+ int targ_index;
+ int *resultp;
+};
-/* Sort a vector of symbols by their value. */
+static void find_targ_sec PARAMS ((bfd *, asection *, void *));
-static void
-sort_syms ()
+static void find_targ_sec (abfd, sect, obj)
+ bfd *abfd;
+ asection *sect;
+ PTR obj;
{
- register struct symtab *s;
- register struct objfile *objfile;
- register int i, nbl;
- register struct blockvector *bv;
- register struct block *b;
-
- for (objfile = object_files; objfile != NULL; objfile = objfile -> next)
+ struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj;
+ if (sect->target_index == args->targ_index)
{
- for (s = objfile -> symtabs; s != NULL; s = s -> next)
- {
- bv = BLOCKVECTOR (s);
- nbl = BLOCKVECTOR_NBLOCKS (bv);
- for (i = 0; i < nbl; i++)
- {
- b = BLOCKVECTOR_BLOCK (bv, i);
- if (BLOCK_SHOULD_SORT (b))
- {
- qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
- sizeof (struct symbol *), compare_symbols);
- }
- }
- }
+ /* This is the section. Figure out what SECT_OFF_* code it is. */
+ if (bfd_get_section_flags (abfd, sect) & SEC_CODE)
+ *args->resultp = SECT_OFF_TEXT;
+ else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD)
+ *args->resultp = SECT_OFF_DATA;
+ else
+ *args->resultp = SECT_OFF_BSS;
}
}
-
+/* Return the section number (SECT_OFF_*) that CS points to. */
+static int
+secnum_to_section (secnum, objfile)
+ int secnum;
+ struct objfile *objfile;
+{
+ int off = SECT_OFF_TEXT;
+ struct find_targ_sec_arg args;
+ args.targ_index = secnum;
+ args.resultp = &off;
+ bfd_map_over_sections (objfile->obfd, find_targ_sec, &args);
+ return off;
+}
+\f
/* add a given stab string into given stab vector. */
static void
}
(*stabvector)->stab [(*stabvector)->count++] = stabname;
}
+\f
+/* Linenos are processed on a file-by-file basis.
+
+ Two reasons:
+
+ 1) xlc (IBM's native c compiler) postpones static function code
+ emission to the end of a compilation unit. This way it can
+ determine if those functions (statics) are needed or not, and
+ can do some garbage collection (I think). This makes line
+ numbers and corresponding addresses unordered, and we end up
+ with a line table like:
+
+
+ lineno addr
+ foo() 10 0x100
+ 20 0x200
+ 30 0x300
+
+ foo3() 70 0x400
+ 80 0x500
+ 90 0x600
+
+ static foo2()
+ 40 0x700
+ 50 0x800
+ 60 0x900
+
+ and that breaks gdb's binary search on line numbers, if the
+ above table is not sorted on line numbers. And that sort
+ should be on function based, since gcc can emit line numbers
+ like:
+
+ 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.
+ arrange_linetable() will do this sorting.
-#if 0
-/* for all the stabs in a given stab vector, build appropriate types
- and fix their symbols in given symbol vector. */
-
-void
-patch_block_stabs (symbols, stabs)
-struct pending *symbols;
-struct pending_stabs *stabs;
-{
- int ii;
-
- if (!stabs)
- return;
-
- /* for all the stab entries, find their corresponding symbols and
- patch their types! */
-
- for (ii=0; ii < stabs->count; ++ii) {
- char *name = stabs->stab[ii];
- char *pp = (char*) index (name, ':');
- struct symbol *sym = find_symbol_in_list (symbols, name, pp-name);
- if (!sym) {
- ;
- /* printf ("ERROR! stab symbol not found!\n"); */ /* FIXME */
- /* The above is a false alarm. There are cases the we can have
- a stab, without its symbol. xlc generates this for the extern
- definitions in inner blocks. */
- }
- else {
- pp += 2;
+ 2) aix symbol table might look like:
- if (*(pp-1) == 'F' || *(pp-1) == 'f')
- SYMBOL_TYPE (sym) = lookup_function_type (read_type (&pp, objfile));
- else
- SYMBOL_TYPE (sym) = read_type (&pp, objfile);
- }
- }
-}
-#endif
+ c_file // beginning of a new file
+ .bi // beginning of include file
+ .ei // end of include file
+ .bi
+ .ei
+ basically, .bi/.ei pairs do not necessarily encapsulate
+ their scope. They need to be recorded, and processed later
+ on when we come the end of the compilation unit.
+ Include table (inclTable) and process_linenos() handle
+ that. */
/* compare line table entry addresses. */
- static int
+static int
compare_lte (lte1, lte2)
- struct linetable_entry *lte1, *lte2;
+ struct linetable_entry *lte1, *lte2;
{
return lte1->pc - lte2->pc;
}
/* Give a line table with function entries are marked, arrange its functions
in assending order and strip off function entry markers and return it in
a newly created table. If the old one is good enough, return the old one. */
+/* FIXME: I think all this stuff can be replaced by just passing
+ sort_linevec = 1 to end_symtab. */
static struct linetable *
arrange_linetable (oldLineTb)
- struct linetable *oldLineTb; /* old linetable */
+ struct linetable *oldLineTb; /* old linetable */
{
int ii, jj,
newline, /* new line count */
fentry_size = NUM_OF_FUNCTIONS;
fentry = (struct linetable_entry*)
- malloc (fentry_size * sizeof (struct linetable_entry));
+ xmalloc (fentry_size * sizeof (struct linetable_entry));
for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) {
if (function_count >= fentry_size) { /* make sure you have room. */
fentry_size *= 2;
fentry = (struct linetable_entry*)
- realloc (fentry, fentry_size * sizeof (struct linetable_entry));
+ xrealloc (fentry, fentry_size * sizeof (struct linetable_entry));
}
fentry[function_count].line = ii;
fentry[function_count].pc = oldLineTb->item[ii].pc;
qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte);
/* allocate a new line table. */
- newLineTb = (struct linetable*) malloc (sizeof (struct linetable) +
- (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry));
+ newLineTb = (struct linetable *)
+ xmalloc
+ (sizeof (struct linetable) +
+ (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry));
/* if line table does not start with a function beginning, copy up until
a function begin. */
return newLineTb;
}
-
-
-/* We try to detect the beginning of a compilation unit. That info will
- be used as an entry in line number recording routines (enter_line_range) */
-
-static unsigned first_fun_line_offset;
-static unsigned first_fun_bf;
-
-#define mark_first_line(OFFSET, SYMNUM) \
- if (!first_fun_line_offset) { \
- first_fun_line_offset = OFFSET; \
- first_fun_bf = SYMNUM; \
- }
-
-
/* include file support: C_BINCL/C_EINCL pairs will be kept in the
following `IncludeChain'. At the end of each symtab (end_symtab),
we will determine if we should create additional symtab's to
typedef struct _inclTable {
char *name; /* include filename */
- int begin, end; /* offsets to the line table */
+
+ /* Offsets to the line table. end points to the last entry which is
+ part of this include file. */
+ int begin, end;
+
struct subfile *subfile;
unsigned funStartLine; /* start line # of its function */
} InclTable;
static int inclLength; /* table length */
static int inclDepth; /* nested include depth */
+static void allocate_include_entry PARAMS ((void));
static void
record_include_begin (cs)
struct coff_symbol *cs;
{
- /* In xcoff, we assume include files cannot be nested (not in .c files
- of course, but in corresponding .s files.) */
-
if (inclDepth)
- fatal ("xcoff internal: pending include file exists.");
-
+ {
+ /* In xcoff, we assume include files cannot be nested (not in .c files
+ of course, but in corresponding .s files.). */
+
+ /* This can happen with old versions of GCC.
+ GCC 2.3.3-930426 does not exhibit this on a test case which
+ a user said produced the message for him. */
+ static struct complaint msg = {"Nested C_BINCL symbols", 0, 0};
+ complain (&msg);
+ }
++inclDepth;
- /* allocate an include file, or make room for the new entry */
- if (inclLength == 0) {
- inclTable = (InclTable*)
- xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH);
- bzero (inclTable, sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH);
- inclLength = INITIAL_INCLUDE_TABLE_LENGTH;
- inclIndx = 0;
- }
- else if (inclIndx >= inclLength) {
- inclLength += INITIAL_INCLUDE_TABLE_LENGTH;
- inclTable = (InclTable*)
- xrealloc (inclTable, sizeof (InclTable) * inclLength);
- bzero (inclTable+inclLength-INITIAL_INCLUDE_TABLE_LENGTH,
- sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH);
- }
+ allocate_include_entry ();
inclTable [inclIndx].name = cs->c_name;
inclTable [inclIndx].begin = cs->c_value;
}
-
static void
record_include_end (cs)
struct coff_symbol *cs;
InclTable *pTbl;
if (inclDepth == 0)
- fatal ("xcoff internal: Mismatch C_BINCL/C_EINCL pair found.");
+ {
+ static struct complaint msg = {"Mismatched C_BINCL/C_EINCL pair", 0, 0};
+ complain (&msg);
+ }
+
+ allocate_include_entry ();
pTbl = &inclTable [inclIndx];
pTbl->end = cs->c_value;
++inclIndx;
}
+static void
+allocate_include_entry ()
+{
+ if (inclTable == NULL)
+ {
+ inclTable = (InclTable *)
+ xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH);
+ memset (inclTable,
+ '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH);
+ inclLength = INITIAL_INCLUDE_TABLE_LENGTH;
+ inclIndx = 0;
+ }
+ else if (inclIndx >= inclLength)
+ {
+ inclLength += INITIAL_INCLUDE_TABLE_LENGTH;
+ inclTable = (InclTable *)
+ xrealloc (inclTable, sizeof (InclTable) * inclLength);
+ memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH,
+ '\0', sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH);
+ }
+}
+
+/* Global variable to pass the psymtab down to all the routines involved
+ in psymtab to symtab processing. */
+static struct partial_symtab *this_symtab_psymtab;
-/* given the start and end addresses of a compilation unit (or a csect, at times)
- process its lines and create appropriate line vectors. */
+/* given the start and end addresses of a compilation unit (or a csect,
+ at times) process its lines and create appropriate line vectors. */
static void
process_linenos (start, end)
- CORE_ADDR start, end;
+ CORE_ADDR start, end;
{
- char *pp;
int offset, ii;
+ file_ptr max_offset =
+ ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private)
+ ->max_lineno_offset;
- struct subfile main_subfile; /* subfile structure for the main
- compilation unit. */
+ /* subfile structure for the main compilation unit. */
+ struct subfile main_subfile;
- /* in the main source file, any time we see a function entry, we reset
- this variable to function's absolute starting line number. All the
- following line numbers in the function are relative to this, and
- we record absolute line numbers in record_line(). */
+ /* In the main source file, any time we see a function entry, we
+ reset this variable to function's absolute starting line number.
+ All the following line numbers in the function are relative to
+ this, and we record absolute line numbers in record_line(). */
- int main_source_baseline = 0;
+ unsigned int main_source_baseline = 0;
-
unsigned *firstLine;
- CORE_ADDR addr;
- if (!(offset = first_fun_line_offset))
+ offset =
+ ((struct symloc *)this_symtab_psymtab->read_symtab_private)->lineno_off;
+ if (offset == 0)
goto return_after_cleanup;
- bzero (&main_subfile, sizeof (main_subfile));
- first_fun_line_offset = 0;
+ memset (&main_subfile, '\0', sizeof (main_subfile));
if (inclIndx == 0)
/* All source lines were in the main source file. None in include files. */
enter_line_range (&main_subfile, offset, 0, start, end,
&main_source_baseline);
- /* else, there was source with line numbers in include files */
- else {
-
- main_source_baseline = 0;
- for (ii=0; ii < inclIndx; ++ii) {
-
- struct subfile *tmpSubfile;
+ else
+ {
+ /* There was source with line numbers in include files. */
+ main_source_baseline = 0;
+ for (ii=0; ii < inclIndx; ++ii)
+ {
+ struct subfile *tmpSubfile;
- /* if there is main file source before include file, enter it. */
- if (offset < inclTable[ii].begin) {
- enter_line_range
- (&main_subfile, offset, inclTable[ii].begin - LINESZ, start, 0,
- &main_source_baseline);
- }
+ /* If there is main file source before include file, enter it. */
+ if (offset < inclTable[ii].begin)
+ {
+ enter_line_range
+ (&main_subfile, offset, inclTable[ii].begin - LINESZ,
+ start, 0, &main_source_baseline);
+ }
- /* Have a new subfile for the include file */
+ /* Have a new subfile for the include file. */
- tmpSubfile = inclTable[ii].subfile = (struct subfile*)
- xmalloc (sizeof (struct subfile));
+ tmpSubfile = inclTable[ii].subfile =
+ (struct subfile *) xmalloc (sizeof (struct subfile));
- bzero (tmpSubfile, sizeof (struct subfile));
- firstLine = &(inclTable[ii].funStartLine);
+ memset (tmpSubfile, '\0', sizeof (struct subfile));
+ firstLine = &(inclTable[ii].funStartLine);
- /* enter include file's lines now. */
- enter_line_range (tmpSubfile, inclTable[ii].begin,
- inclTable[ii].end, start, 0, firstLine);
+ /* Enter include file's lines now. */
+ enter_line_range (tmpSubfile, inclTable[ii].begin,
+ inclTable[ii].end, start, 0, firstLine);
- offset = inclTable[ii].end + LINESZ;
- }
+ if (offset <= inclTable[ii].end)
+ offset = inclTable[ii].end + LINESZ;
+ }
- /* all the include files' line have been processed at this point. Now,
- enter remaining lines of the main file, if any left. */
- if (offset < (linetab_offset + linetab_size + 1 - LINESZ)) {
- enter_line_range (&main_subfile, offset, 0, start, end,
- &main_source_baseline);
+ /* All the include files' line have been processed at this point. Now,
+ enter remaining lines of the main file, if any left. */
+ if (offset < max_offset + 1 - LINESZ)
+ {
+ enter_line_range (&main_subfile, offset, 0, start, end,
+ &main_source_baseline);
+ }
}
- }
- /* Process main file's line numbers. */
- if (main_subfile.line_vector) {
- struct linetable *lineTb, *lv;
+ /* Process main file's line numbers. */
+ if (main_subfile.line_vector)
+ {
+ struct linetable *lineTb, *lv;
- lv = main_subfile.line_vector;
+ lv = main_subfile.line_vector;
- /* Line numbers are not necessarily ordered. xlc compilation will
- put static function to the end. */
+ /* Line numbers are not necessarily ordered. xlc compilation will
+ put static function to the end. */
- lineTb = arrange_linetable (lv);
- if (lv == lineTb) {
- current_subfile->line_vector = (struct linetable *)
- xrealloc (lv, (sizeof (struct linetable)
- + lv->nitems * sizeof (struct linetable_entry)));
+ lineTb = arrange_linetable (lv);
+ if (lv == lineTb)
+ {
+ current_subfile->line_vector = (struct linetable *)
+ xrealloc (lv, (sizeof (struct linetable)
+ + lv->nitems * sizeof (struct linetable_entry)));
+ }
+ else
+ {
+ free (lv);
+ current_subfile->line_vector = lineTb;
+ }
- }
- else {
- free (lv);
- current_subfile->line_vector = lineTb;
+ current_subfile->line_vector_length =
+ current_subfile->line_vector->nitems;
}
- current_subfile->line_vector_length =
- current_subfile->line_vector->nitems;
- }
-
- /* Now, process included files' line numbers. */
+ /* Now, process included files' line numbers. */
- for (ii=0; ii < inclIndx; ++ii) {
+ for (ii=0; ii < inclIndx; ++ii)
+ {
+ if ((inclTable[ii].subfile)->line_vector) /* Useless if!!! FIXMEmgo */
+ {
+ struct linetable *lineTb, *lv;
- if ( (inclTable[ii].subfile)->line_vector) { /* Useless if!!! FIXMEmgo */
- struct linetable *lineTb, *lv;
+ lv = (inclTable[ii].subfile)->line_vector;
- lv = (inclTable[ii].subfile)->line_vector;
+ /* Line numbers are not necessarily ordered. xlc compilation will
+ put static function to the end. */
- /* Line numbers are not necessarily ordered. xlc compilation will
- put static function to the end. */
+ lineTb = arrange_linetable (lv);
- lineTb = arrange_linetable (lv);
+ push_subfile ();
- push_subfile ();
+ /* For the same include file, we might want to have more than one
+ subfile. This happens if we have something like:
- /* For the same include file, we might want to have more than one subfile.
- This happens if we have something like:
-
......
#include "foo.h"
......
#include "foo.h"
......
- while foo.h including code in it. (stupid but possible)
- Since start_subfile() looks at the name and uses an existing one if finds,
- we need to provide a fake name and fool it. */
+ while foo.h including code in it. (stupid but possible)
+ Since start_subfile() looks at the name and uses an
+ existing one if finds, we need to provide a fake name and
+ fool it. */
-/* start_subfile (inclTable[ii].name, (char*)0); */
- start_subfile (" ?", (char*)0);
- current_subfile->name =
- obsavestring (inclTable[ii].name, strlen (inclTable[ii].name),
- ¤t_objfile->symbol_obstack);
+#if 0
+ start_subfile (inclTable[ii].name, (char*)0);
+#else
+ {
+ /* Pick a fake name that will produce the same results as this
+ one when passed to deduce_language_from_filename. Kludge on
+ top of kludge. */
+ char *fakename = strrchr (inclTable[ii].name, '.');
+ if (fakename == NULL)
+ fakename = " ?";
+ start_subfile (fakename, (char*)0);
+ free (current_subfile->name);
+ }
+ current_subfile->name = strdup (inclTable[ii].name);
+#endif
- if (lv == lineTb) {
- current_subfile->line_vector = (struct linetable *)
- xrealloc (lv, (sizeof (struct linetable)
+ if (lv == lineTb)
+ {
+ current_subfile->line_vector =
+ (struct linetable *) xrealloc
+ (lv, (sizeof (struct linetable)
+ lv->nitems * sizeof (struct linetable_entry)));
- }
- else {
- free (lv);
- current_subfile->line_vector = lineTb;
- }
+ }
+ else
+ {
+ free (lv);
+ current_subfile->line_vector = lineTb;
+ }
- current_subfile->line_vector_length =
- current_subfile->line_vector->nitems;
- start_subfile (pop_subfile (), (char*)0);
- }
+ current_subfile->line_vector_length =
+ current_subfile->line_vector->nitems;
+ start_subfile (pop_subfile (), (char*)0);
+ }
}
-return_after_cleanup:
+ return_after_cleanup:
- /* We don't want to keep alloc/free'ing the global include file table. */
+ /* We don't want to keep alloc/free'ing the global include file table. */
inclIndx = 0;
- /* start with a fresh subfile structure for the next file. */
- bzero (&main_subfile, sizeof (struct subfile));
+ /* Start with a fresh subfile structure for the next file. */
+ memset (&main_subfile, '\0', sizeof (struct subfile));
}
void
/* Enter a given range of lines into the line vector.
can be called in the following two ways:
enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or
- enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) */
+ enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine)
+
+ endoffset points to the last line table entry that we should pay
+ attention to. */
static void
-enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, firstLine)
- struct subfile *subfile;
- unsigned beginoffset, endoffset; /* offsets to line table */
- CORE_ADDR startaddr, endaddr;
- unsigned *firstLine;
+enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr,
+ firstLine)
+ struct subfile *subfile;
+ unsigned beginoffset, endoffset; /* offsets to line table */
+ CORE_ADDR startaddr, endaddr;
+ unsigned *firstLine;
{
- char *pp, *limit;
- CORE_ADDR addr;
-
-/* Do Byte swapping, if needed. FIXME! */
-#define P_LINENO(PP) (*(unsigned short*)((struct external_lineno*)(PP))->l_lnno)
-#define P_LINEADDR(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_paddr)
-#define P_LINESYM(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_symndx)
-
- pp = &linetab [beginoffset - linetab_offset];
- limit = endoffset ? &linetab [endoffset - linetab_offset]
- : &linetab [linetab_size -1];
-
- while (pp <= limit) {
-
- /* find the address this line represents */
- addr = P_LINENO(pp) ?
- P_LINEADDR(pp) : read_symbol_nvalue (symtbl, P_LINESYM(pp));
-
- if (addr < startaddr || (endaddr && addr > endaddr))
- return;
-
- if (P_LINENO(pp) == 0) {
- *firstLine = read_symbol_lineno (symtbl, P_LINESYM(pp));
- record_line (subfile, 0, addr);
- --(*firstLine);
- }
- else
- record_line (subfile, *firstLine + P_LINENO(pp), addr);
-
- pp += LINESZ;
- }
-}
-
-typedef struct {
- int fsize; /* file size */
- int fixedparms; /* number of fixed parms */
- int floatparms; /* number of float parms */
- unsigned int parminfo; /* parameter info.
- See /usr/include/sys/debug.h
- tbtable_ext.parminfo */
- int framesize; /* function frame size */
-} TracebackInfo;
-
-
-/* Given a function symbol, return its traceback information. */
-
- TracebackInfo *
-retrieve_tracebackinfo (abfd, textsec, cs)
+ unsigned int curoffset;
+ CORE_ADDR addr;
+ struct external_lineno ext_lnno;
+ struct internal_lineno int_lnno;
+ unsigned int limit_offset;
bfd *abfd;
- sec_ptr textsec;
- struct coff_symbol *cs;
-{
-#define TBTABLE_BUFSIZ 2000
-#define MIN_TBTABSIZ 50 /* minimum buffer size to hold a
- traceback table. */
-
- static TracebackInfo tbInfo;
- struct tbtable *ptb;
-
- static char buffer [TBTABLE_BUFSIZ];
-
- int *pinsn;
- int bytesread=0; /* total # of bytes read so far */
- int bufferbytes; /* number of bytes in the buffer */
-
- int functionstart = cs->c_value - textsec->vma;
-
- bzero (&tbInfo, sizeof (tbInfo));
-
- /* keep reading blocks of data from the text section, until finding a zero
- word and a traceback table. */
-
- while (
- bufferbytes = (
- (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread)) ?
- TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread))
-
- && bfd_get_section_contents (abfd, textsec, buffer,
- (file_ptr)(functionstart + bytesread), bufferbytes))
- {
- bytesread += bufferbytes;
- pinsn = (int*) buffer;
-
- /* if this is the first time we filled the buffer, retrieve function
- framesize info. */
-
- if (bytesread == bufferbytes) {
-
- /* skip over unrelated instructions */
- if (*pinsn == 0x7c0802a6) /* mflr r0 */
- ++pinsn;
- if ((*pinsn & 0xfc00003e) == 0x7c000026) /* mfcr Rx */
- ++pinsn;
- if ((*pinsn & 0xfc000000) == 0x48000000) /* bl foo, save fprs */
- ++pinsn;
- if ((*pinsn & 0xfc1f0000) == 0xbc010000) /* stm Rx, NUM(r1) */
- ++pinsn;
-
- do {
- int tmp = (*pinsn >> 16) & 0xffff;
+ if (endoffset == 0 && startaddr == 0 && endaddr == 0)
+ return;
+ curoffset = beginoffset;
+ limit_offset =
+ ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private)
+ ->max_lineno_offset;
- if (tmp == 0x9421) { /* stu r1, NUM(r1) */
- tbInfo.framesize = 0x10000 - (*pinsn & 0xffff);
- break;
+ if (endoffset != 0)
+ {
+ if (endoffset >= limit_offset)
+ {
+ static struct complaint msg =
+ {"Bad line table offset in C_EINCL directive", 0, 0};
+ complain (&msg);
+ return;
}
- else if ((*pinsn == 0x93e1fffc) || /* st r31,-4(r1) */
- (tmp == 0x9001)) /* st r0, NUM(r1) */
- ;
- /* else, could not find a frame size. */
- else
- return NULL;
-
- } while (++pinsn && *pinsn);
-
- if (!tbInfo.framesize)
- return NULL;
- }
-
- /* look for a zero word. */
-
- while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int))))
- ++pinsn;
-
- if (pinsn >= (int*)(buffer + bufferbytes))
- continue;
-
- if (*pinsn == 0) {
-
- /* function size is the amount of bytes we have skipped so far. */
- tbInfo.fsize = bytesread - (buffer + bufferbytes - (char*)pinsn);
-
- ++pinsn;
-
- /* if we don't have the whole traceback table in the buffer, re-read
- the whole thing. */
-
- if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) {
-
- /* In case if we are *very* close to the end of the text section
- and cannot read properly from that point on, abort by returning
- NULL.
- Handle this case more graciously -- FIXME */
-
- if (!bfd_get_section_contents (
- abfd, textsec, buffer,
- (file_ptr)(functionstart +
- bytesread - (buffer + bufferbytes - (char*)pinsn)),MIN_TBTABSIZ))
- { printf ("Abnormal return!..\n"); return NULL; }
-
- ptb = (struct tbtable *)buffer;
- }
- else
- ptb = (struct tbtable *)pinsn;
-
- tbInfo.fixedparms = ptb->tb.fixedparms;
- tbInfo.floatparms = ptb->tb.floatparms;
- tbInfo.parminfo = ptb->tb_ext.parminfo;
- return &tbInfo;
+ limit_offset = endoffset;
}
- }
- return NULL;
-}
-
-#if 0
-/* Given a function symbol, return a pointer to its traceback table. */
-
- struct tbtable *
-retrieve_traceback (abfd, textsec, cs, size)
- bfd *abfd;
- sec_ptr textsec;
- struct coff_symbol *cs;
- int *size; /* return function size */
-{
-#define TBTABLE_BUFSIZ 2000
-#define MIN_TBTABSIZ 50 /* minimum buffer size to hold a
- traceback table. */
-
- static char buffer [TBTABLE_BUFSIZ];
+ else
+ limit_offset -= 1;
+ abfd = this_symtab_psymtab->objfile->obfd;
- int *pinsn;
- int bytesread=0; /* total # of bytes read so far */
- int bufferbytes; /* number of bytes in the buffer */
-
- int functionstart = cs->c_value - textsec->filepos + textsec->vma;
- *size = 0;
-
- /* keep reading blocks of data from the text section, until finding a zero
- word and a traceback table. */
-
- while (bfd_get_section_contents (abfd, textsec, buffer,
- (file_ptr)(functionstart + bytesread),
- bufferbytes = (
- (TBTABLE_BUFSIZ < (textsec->size - functionstart - bytesread)) ?
- TBTABLE_BUFSIZ : (textsec->size - functionstart - bytesread))))
- {
- bytesread += bufferbytes;
- pinsn = (int*) buffer;
-
- /* look for a zero word. */
-
- while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int))))
- ++pinsn;
-
- if (pinsn >= (int*)(buffer + bufferbytes))
- continue;
-
- if (*pinsn == 0) {
-
- /* function size is the amount of bytes we have skipped so far. */
- *size = bytesread - (buffer + bufferbytes - pinsn);
-
- ++pinsn;
-
- /* if we don't have the whole traceback table in the buffer, re-read
- the whole thing. */
-
- if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) {
+ while (curoffset <= limit_offset)
+ {
+ bfd_seek (abfd, curoffset, SEEK_SET);
+ bfd_read (&ext_lnno, sizeof (struct external_lineno), 1, abfd);
+ bfd_coff_swap_lineno_in (abfd, &ext_lnno, &int_lnno);
- /* In case if we are *very* close to the end of the text section
- and cannot read properly from that point on, abort for now.
- Handle this case more graciously -- FIXME */
+ /* Find the address this line represents. */
+ addr = (int_lnno.l_lnno
+ ? int_lnno.l_addr.l_paddr
+ : read_symbol_nvalue (int_lnno.l_addr.l_symndx));
+ addr += ANOFFSET (this_symtab_psymtab->objfile->section_offsets,
+ SECT_OFF_TEXT);
- if (!bfd_get_section_contents (
- abfd, textsec, buffer,
- (file_ptr)(functionstart +
- bytesread - (buffer + bufferbytes - pinsn)),MIN_TBTABSIZ))
- /* abort (); */ { printf ("abort!!!\n"); return NULL; }
+ if (addr < startaddr || (endaddr && addr >= endaddr))
+ return;
- return (struct tbtable *)buffer;
- }
+ if (int_lnno.l_lnno == 0)
+ {
+ *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx);
+ record_line (subfile, 0, addr);
+ --(*firstLine);
+ }
else
- return (struct tbtable *)pinsn;
+ record_line (subfile, *firstLine + int_lnno.l_lnno, addr);
+ curoffset += LINESZ;
}
- }
- return NULL;
}
-#endif /* 0 */
-
-
/* Save the vital information for use when closing off the current file.
/* Reading symbol table has to be fast! Keep the followings as macros, rather
than functions. */
-#define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, ALLOCED) \
+#define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, SECTION, OBJFILE) \
{ \
char *namestr; \
- if (ALLOCED) \
- namestr = (NAME) + 1; \
- else { \
- (NAME) = namestr = \
- obstack_copy0 (&objfile->symbol_obstack, (NAME) + 1, strlen ((NAME)+1)); \
- (ALLOCED) = 1; \
- } \
- prim_record_minimal_symbol (namestr, (ADDR), (TYPE)); \
+ namestr = (NAME); \
+ if (namestr[0] == '.') ++namestr; \
+ prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \
+ (char *)NULL, (SECTION), (OBJFILE)); \
misc_func_recorded = 1; \
}
-/* A parameter template, used by ADD_PARM_TO_PENDING. It is initialized
- in our initializer function at the bottom of the file, to avoid
- dependencies on the exact "struct symbol" format. */
-
-static struct symbol parmsym;
-
-/* Add a parameter to a given pending symbol list. */
-
-#define ADD_PARM_TO_PENDING(PARM, VALUE, PTYPE, PENDING_SYMBOLS) \
-{ \
- PARM = (struct symbol *) \
- obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \
- *(PARM) = parmsym; \
- SYMBOL_TYPE (PARM) = PTYPE; \
- SYMBOL_VALUE (PARM) = VALUE; \
- add_symbol_to_list (PARM, &PENDING_SYMBOLS); \
-}
-
-
/* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be
nested. At any given time, a symbol can only be in one static block.
This is the base address of current static block, zero if non exists. */
static int static_block_base = 0;
+/* Section number for the current static block. */
+
+static int static_block_section = -1;
+
/* true if space for symbol name has been allocated. */
static int symname_alloced = 0;
-/* read the whole symbol table of a given bfd. */
+/* Next symbol to read. Pointer into raw seething symbol table. */
-static void
-read_xcoff_symtab (objfile, nsyms)
- struct objfile *objfile; /* Object file we're reading from */
- int nsyms; /* # of symbols */
+static char *raw_symbol;
+
+/* This is the function which stabsread.c calls to get symbol
+ continuations. */
+static char *
+xcoff_next_symbol_text ()
{
- bfd *abfd = objfile->obfd;
- char *raw_symbol; /* Pointer into raw seething symbol table */
- char *raw_auxptr; /* Pointer to first raw aux entry for sym */
- sec_ptr textsec; /* Pointer to text section */
- TracebackInfo *ptb; /* Pointer to traceback table */
+ struct internal_syment symbol;
+ static struct complaint msg =
+ {"Unexpected symbol continuation", 0, 0};
+ char *retval;
+ struct objfile *objfile = this_symtab_psymtab->objfile;
+
+ bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol);
+ if (symbol.n_zeroes)
+ {
+ complain (&msg);
- struct internal_syment symbol[1];
- union internal_auxent main_aux[1];
+ /* Return something which points to '\0' and hope the symbol reading
+ code does something reasonable. */
+ retval = "";
+ }
+ else if (symbol.n_sclass & 0x80)
+ {
+ retval =
+ ((struct coff_symfile_info *)objfile->sym_private)->debugsec
+ + symbol.n_offset;
+ raw_symbol +=
+ coff_data (objfile->obfd)->local_symesz;
+ ++symnum;
+ }
+ else
+ {
+ complain (&msg);
+
+ /* Return something which points to '\0' and hope the symbol reading
+ code does something reasonable. */
+ retval = "";
+ }
+ return retval;
+}
+
+/* Read symbols for a given partial symbol table. */
+
+static void
+read_xcoff_symtab (pst)
+ struct partial_symtab *pst;
+{
+ struct objfile *objfile = pst->objfile;
+ bfd *abfd = objfile->obfd;
+ char *raw_auxptr; /* Pointer to first raw aux entry for sym */
+ char *strtbl = ((struct coff_symfile_info *)objfile->sym_private)->strtbl;
+ char *debugsec =
+ ((struct coff_symfile_info *)objfile->sym_private)->debugsec;
+
+ struct internal_syment symbol[1];
+ union internal_auxent main_aux;
struct coff_symbol cs[1];
CORE_ADDR file_start_addr = 0;
CORE_ADDR file_end_addr = 0;
int next_file_symnum = -1;
+ unsigned int max_symnum;
int just_started = 1;
int depth = 0;
- int toc_offset = 0; /* toc offset value in data section. */
- int val;
- int fcn_last_line;
- int fcn_start_addr;
- long fcn_line_offset;
- size_t size;
+ int fcn_start_addr = 0;
struct coff_symbol fcn_stab_saved;
/* fcn_cs_saved is global because process_xcoff_symbol needs it. */
union internal_auxent fcn_aux_saved;
- struct type *fcn_type_saved = NULL;
struct context_stack *new;
char *filestring = " _start_ "; /* Name of the current file. */
char *last_csect_name; /* last seen csect's name and value */
CORE_ADDR last_csect_val;
- int misc_func_recorded; /* true if any misc. function */
+ int last_csect_sec;
- current_objfile = objfile;
+ this_symtab_psymtab = pst;
- /* Get the appropriate COFF "constants" related to the file we're handling. */
- N_TMASK = coff_data (abfd)->local_n_tmask;
- N_BTSHFT = coff_data (abfd)->local_n_btshft;
+ /* Get the appropriate COFF "constants" related to the file we're
+ handling. */
local_symesz = coff_data (abfd)->local_symesz;
last_source_file = NULL;
last_csect_name = 0;
last_csect_val = 0;
- misc_func_recorded = 0;
start_stabs ();
start_symtab (filestring, (char *)NULL, file_start_addr);
- symnum = 0;
+ symnum = ((struct symloc *)pst->read_symtab_private)->first_symnum;
+ max_symnum =
+ symnum + ((struct symloc *)pst->read_symtab_private)->numsyms;
first_object_file_end = 0;
- /* Allocate space for the entire symbol table at once, and read it
- all in. The bfd is already positioned at the beginning of
- the symbol table. */
-
- size = coff_data (abfd)->local_symesz * nsyms;
- symtbl = xmalloc (size);
+ raw_symbol =
+ ((struct coff_symfile_info *) objfile->sym_private)->symtbl
+ + symnum * local_symesz;
- val = bfd_read (symtbl, size, 1, abfd);
- if (val != size)
- perror_with_name ("reading symbol table");
+ while (symnum < max_symnum)
+ {
- raw_symbol = symtbl;
+ QUIT; /* make this command interruptable. */
- textsec = bfd_get_section_by_name (abfd, ".text");
- if (!textsec) {
- printf ("Unable to locate text section!\n");
- }
+ /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */
+ /* read one symbol into `cs' structure. After processing the
+ whole symbol table, only string table will be kept in memory,
+ symbol table and debug section of xcoff will be freed. Thus
+ we can mark symbols with names in string table as
+ `alloced'. */
+ {
+ int ii;
- while (symnum < nsyms) {
+ /* Swap and align the symbol into a reasonable C structure. */
+ bfd_coff_swap_sym_in (abfd, raw_symbol, symbol);
- QUIT; /* make this command interruptable. */
+ cs->c_symnum = symnum;
+ cs->c_naux = symbol->n_numaux;
+ if (symbol->n_zeroes)
+ {
+ symname_alloced = 0;
+ /* We must use the original, unswapped, name here so the name field
+ pointed to by cs->c_name will persist throughout xcoffread. If
+ we use the new field, it gets overwritten for each symbol. */
+ cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name;
+ /* If it's exactly E_SYMNMLEN characters long it isn't
+ '\0'-terminated. */
+ if (cs->c_name[E_SYMNMLEN - 1] != '\0')
+ {
+ char *p;
+ p = obstack_alloc (&objfile->symbol_obstack, E_SYMNMLEN + 1);
+ strncpy (p, cs->c_name, E_SYMNMLEN);
+ p[E_SYMNMLEN] = '\0';
+ cs->c_name = p;
+ symname_alloced = 1;
+ }
+ }
+ else if (symbol->n_sclass & 0x80)
+ {
+ cs->c_name = debugsec + symbol->n_offset;
+ symname_alloced = 0;
+ }
+ else
+ {
+ /* in string table */
+ cs->c_name = strtbl + (int)symbol->n_offset;
+ symname_alloced = 1;
+ }
+ cs->c_value = symbol->n_value;
+ cs->c_sclass = symbol->n_sclass;
+ cs->c_secnum = symbol->n_scnum;
+ cs->c_type = (unsigned)symbol->n_type;
- /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */
- /* read one symbol into `cs' structure. After processing the whole symbol
- table, only string table will be kept in memory, symbol table and debug
- section of xcoff will be freed. Thus we can mark symbols with names
- in string table as `alloced'. */
- {
- int ii;
-
- /* Swap and align the symbol into a reasonable C structure. */
- bfd_coff_swap_sym_in (abfd, raw_symbol, symbol);
-
- cs->c_symnum = symnum;
- cs->c_nsyms = symbol->n_numaux;
- if (symbol->n_zeroes) {
- symname_alloced = 0;
- /* We must use the original, unswapped, name here so the name field
- pointed to by cs->c_name will persist throughout xcoffread. If
- we use the new field, it gets overwritten for each symbol. */
- cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name;
- } else if (symbol->n_sclass & 0x80) {
- cs->c_name = debugsec + symbol->n_offset;
- symname_alloced = 0;
- } else { /* in string table */
- cs->c_name = strtbl + (int)symbol->n_offset;
- symname_alloced = 1;
- }
- cs->c_value = symbol->n_value;
- /* n_sclass is signed (FIXME), so we had better not mask off any
- high bits it contains, since the values we will be comparing
- it to are also signed (FIXME). Defined in <coff/internal.h>.
- make the fields and values unsigned chars, but changing the next
- line is a simple patch late in the release cycle, for now. */
- cs->c_sclass = symbol->n_sclass /* & 0xff */;
- cs->c_secnum = symbol->n_scnum;
- cs->c_type = (unsigned)symbol->n_type;
-
- raw_symbol += coff_data (abfd)->local_symesz;
- ++symnum;
+ raw_symbol += coff_data (abfd)->local_symesz;
+ ++symnum;
- raw_auxptr = raw_symbol; /* Save addr of first aux entry */
+ /* Save addr of first aux entry. */
+ raw_auxptr = raw_symbol;
- /* Skip all the auxents associated with this symbol. */
- for (ii = symbol->n_numaux; ii; --ii ) {
- raw_symbol += coff_data (abfd)->local_auxesz;
- ++symnum;
+ /* Skip all the auxents associated with this symbol. */
+ for (ii = symbol->n_numaux; ii; --ii)
+ {
+ raw_symbol += coff_data (abfd)->local_auxesz;
+ ++symnum;
+ }
}
- }
- /* if symbol name starts with ".$" or "$", ignore it. */
- if (cs->c_name[0] == '$' || (cs->c_name[1] == '$' && cs->c_name[0] == '.'))
- continue;
+ /* if symbol name starts with ".$" or "$", ignore it. */
+ if (cs->c_name[0] == '$'
+ || (cs->c_name[1] == '$' && cs->c_name[0] == '.'))
+ continue;
- if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) {
- if (last_source_file)
+ if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE)
{
- end_symtab (cur_src_end_addr, 1, 0, objfile);
- end_stabs ();
- }
-
- start_stabs ();
- start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0);
- cur_src_end_addr = first_object_file_end;
- /* done with all files, everything from here on is globals */
- }
+ if (last_source_file)
+ {
+ pst->symtab =
+ end_symtab (cur_src_end_addr, 1, 0, objfile, SECT_OFF_TEXT);
+ end_stabs ();
+ }
- /* if explicitly specified as a function, treat is as one. */
- if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) {
- bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- main_aux);
- goto function_entry_point;
- }
+ start_stabs ();
+ start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0);
+ cur_src_end_addr = first_object_file_end;
+ /* done with all files, everything from here on is globals */
+ }
- if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) && cs->c_nsyms == 1)
- {
- /* dealing with a symbol with a csect entry. */
+ /* if explicitly specified as a function, treat is as one. */
+ if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF)
+ {
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ 0, cs->c_naux, &main_aux);
+ goto function_entry_point;
+ }
-# define CSECT(PP) ((PP)->x_csect)
-# define CSECT_LEN(PP) (CSECT(PP).x_scnlen)
-# define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp))
-# define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp))
-# define CSECT_SCLAS(PP) (CSECT(PP).x_smclas)
+ if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT)
+ && cs->c_naux == 1)
+ {
+ /* Dealing with a symbol with a csect entry. */
- /* Convert the auxent to something we can access. */
- bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- main_aux);
+#define CSECT(PP) ((PP)->x_csect)
+#define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l)
+#define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp))
+#define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp))
+#define CSECT_SCLAS(PP) (CSECT(PP).x_smclas)
- switch (CSECT_SMTYP (main_aux)) {
+ /* Convert the auxent to something we can access. */
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ 0, cs->c_naux, &main_aux);
- case XTY_ER :
- continue; /* ignore all external references. */
+ switch (CSECT_SMTYP (&main_aux))
+ {
- case XTY_SD : /* a section description. */
- {
- switch (CSECT_SCLAS (main_aux)) {
+ case XTY_ER:
+ /* Ignore all external references. */
+ continue;
- case XMC_PR : /* a `.text' csect. */
+ case XTY_SD:
+ /* A section description. */
{
-
- /* A program csect is seen.
-
- We have to allocate one symbol table for each program csect. Normally
- gdb prefers one symtab for each compilation unit (CU). In case of AIX, one
- CU might include more than one prog csect, and they don't have to be
- adjacent in terms of the space they occupy in memory. Thus, one single
- CU might get fragmented in the memory and gdb's file start and end address
- approach does not work! */
-
- if (last_csect_name) {
-
- /* if no misc. function recorded in the last seen csect, enter
- it as a function. This will take care of functions like
- strcmp() compiled by xlc. */
-
- if (!misc_func_recorded) {
- int alloced = 0;
- RECORD_MINIMAL_SYMBOL (last_csect_name, last_csect_val,
- mst_text, alloced);
+ switch (CSECT_SCLAS (&main_aux))
+ {
+
+ case XMC_PR:
+ {
+
+ /* A program csect is seen. We have to allocate one
+ symbol table for each program csect. Normally gdb
+ prefers one symtab for each source file. In case
+ of AIX, one source file might include more than one
+ [PR] csect, and they don't have to be adjacent in
+ terms of the space they occupy in memory. Thus, one
+ single source file might get fragmented in the
+ memory and gdb's file start and end address
+ approach does not work! GCC (and I think xlc) seem
+ to put all the code in the unnamed program csect. */
+
+ if (last_csect_name)
+ {
+ complete_symtab (filestring, file_start_addr);
+ cur_src_end_addr = file_end_addr;
+ end_symtab (file_end_addr, 1, 0, objfile,
+ SECT_OFF_TEXT);
+ end_stabs ();
+ start_stabs ();
+ /* Give all csects for this source file the same
+ name. */
+ start_symtab (filestring, NULL, (CORE_ADDR)0);
+ }
+
+ /* If this is the very first csect seen,
+ basically `__start'. */
+ if (just_started)
+ {
+ first_object_file_end
+ = cs->c_value + CSECT_LEN (&main_aux);
+ just_started = 0;
+ }
+
+ file_start_addr =
+ cs->c_value + ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT);
+ file_end_addr = file_start_addr + CSECT_LEN (&main_aux);
+
+ if (cs->c_name && cs->c_name[0] == '.')
+ {
+ last_csect_name = cs->c_name;
+ last_csect_val = cs->c_value;
+ last_csect_sec = secnum_to_section (cs->c_secnum, objfile);
+ }
+ }
+ continue;
+
+ /* All other symbols are put into the minimal symbol
+ table only. */
+
+ case XMC_RW:
+ continue;
+
+ case XMC_TC0:
+ continue;
+
+ case XMC_TC:
+ continue;
+
+ default:
+ /* Ignore the symbol. */
+ continue;
}
-
-
- complete_symtab (filestring, file_start_addr);
- cur_src_end_addr = file_end_addr;
- end_symtab (file_end_addr, 1, 0, objfile);
- end_stabs ();
- start_stabs ();
- start_symtab ((char *)NULL, (char *)NULL, (CORE_ADDR)0);
- }
-
- /* If this is the very first csect seen, basically `__start'. */
- if (just_started) {
- first_object_file_end = cs->c_value + CSECT_LEN (main_aux);
- just_started = 0;
- }
+ }
+ break;
- file_start_addr = cs->c_value;
- file_end_addr = cs->c_value + CSECT_LEN (main_aux);
+ case XTY_LD:
- if (cs->c_name && cs->c_name[0] == '.') {
- last_csect_name = cs->c_name;
- last_csect_val = cs->c_value;
+ switch (CSECT_SCLAS (&main_aux))
+ {
+ case XMC_PR:
+ /* a function entry point. */
+ function_entry_point:
+
+ fcn_start_addr = cs->c_value;
+
+ /* save the function header info, which will be used
+ when `.bf' is seen. */
+ fcn_cs_saved = *cs;
+ fcn_aux_saved = main_aux;
+ continue;
+
+ case XMC_GL:
+ /* shared library function trampoline code entry point. */
+ continue;
+
+ case XMC_DS:
+ /* The symbols often have the same names as debug symbols for
+ functions, and confuse lookup_symbol. */
+ continue;
+
+ default:
+ /* xlc puts each variable in a separate csect, so we get
+ an XTY_SD for each variable. But gcc puts several
+ variables in a csect, so that each variable only gets
+ an XTY_LD. This will typically be XMC_RW; I suspect
+ XMC_RO and XMC_BS might be possible too.
+ These variables are put in the minimal symbol table
+ only. */
+ continue;
}
- }
- misc_func_recorded = 0;
- continue;
-
- case XMC_RW :
break;
- /* If the section is not a data description, ignore it. Note that
- uninitialized data will show up as XTY_CM/XMC_RW pair. */
-
- case XMC_TC0:
- if (toc_offset)
- warning ("More than one xmc_tc0 symbol found.");
- toc_offset = cs->c_value;
+ case XTY_CM:
+ /* Common symbols are put into the minimal symbol table only. */
continue;
- case XMC_TC : /* ignore toc entries */
- default : /* any other XMC_XXX */
- continue;
+ default:
+ break;
}
- }
- break; /* switch CSECT_SCLAS() */
-
- case XTY_LD :
-
- /* a function entry point. */
- if (CSECT_SCLAS (main_aux) == XMC_PR) {
-
-function_entry_point:
- RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_text,
- symname_alloced);
-
- fcn_line_offset = main_aux->x_sym.x_fcnary.x_fcn.x_lnnoptr;
- fcn_start_addr = cs->c_value;
-
- /* save the function header info, which will be used
- when `.bf' is seen. */
- fcn_cs_saved = *cs;
- fcn_aux_saved = *main_aux;
-
-
- ptb = NULL;
+ }
- /* If function has two auxent, then debugging information is
- already available for it. Process traceback table for
- functions with only one auxent. */
+ switch (cs->c_sclass)
+ {
- if (cs->c_nsyms == 1)
- ptb = retrieve_tracebackinfo (abfd, textsec, cs);
+ case C_FILE:
- else if (cs->c_nsyms != 2)
- abort ();
+ /* c_value field contains symnum of next .file entry in table
+ or symnum of first global after last .file. */
- /* If there is traceback info, create and add parameters for it. */
+ next_file_symnum = cs->c_value;
- if (ptb && (ptb->fixedparms || ptb->floatparms)) {
+ /* Complete symbol table for last object file containing
+ debugging information. */
- int parmcnt = ptb->fixedparms + ptb->floatparms;
- char *parmcode = (char*) &ptb->parminfo;
- int parmvalue = ptb->framesize + 0x18; /* sizeof(LINK AREA) == 0x18 */
- unsigned int ii, mask;
+ /* Whether or not there was a csect in the previous file, we
+ have to call `end_stabs' and `start_stabs' to reset
+ type_vector, line_vector, etc. structures. */
- for (ii=0, mask = 0x80000000; ii <parmcnt; ++ii) {
- struct symbol *parm;
+ complete_symtab (filestring, file_start_addr);
+ cur_src_end_addr = file_end_addr;
+ end_symtab (file_end_addr, 1, 0, objfile, SECT_OFF_TEXT);
+ end_stabs ();
- if (ptb->parminfo & mask) { /* float or double */
- mask = mask >> 1;
- if (ptb->parminfo & mask) { /* double parm */
- ADD_PARM_TO_PENDING
- (parm, parmvalue, builtin_type_double, local_symbols);
- parmvalue += sizeof (double);
- }
- else { /* float parm */
- ADD_PARM_TO_PENDING
- (parm, parmvalue, builtin_type_float, local_symbols);
- parmvalue += sizeof (float);
- }
- }
- else { /* fixed parm, use (int*) for hex rep. */
- ADD_PARM_TO_PENDING (parm, parmvalue,
- lookup_pointer_type (builtin_type_int),
- local_symbols);
- parmvalue += sizeof (int);
- }
- mask = mask >> 1;
- }
-
- /* Fake this as a function. Needed in process_xcoff_symbol() */
- cs->c_type = 32;
-
- finish_block(process_xcoff_symbol (cs, objfile), &local_symbols,
- pending_blocks, cs->c_value,
- cs->c_value + ptb->fsize, objfile);
+ /* XCOFF, according to the AIX 3.2 documentation, puts the filename
+ in cs->c_name. But xlc 1.3.0.2 has decided to do things the
+ standard COFF way and put it in the auxent. We use the auxent if
+ the symbol is ".file" and an auxent exists, otherwise use the symbol
+ itself. Simple enough. */
+ if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0)
+ {
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ 0, cs->c_naux, &main_aux);
+ filestring = coff_getfilename (&main_aux, objfile);
}
- continue;
- }
- /* shared library function trampoline code entry point. */
- else if (CSECT_SCLAS (main_aux) == XMC_GL) {
-
- /* record trampoline code entries as mst_unknown symbol. When we
- lookup mst symbols, we will choose mst_text over mst_unknown. */
-
-#if 1
- /* After the implementation of incremental loading of shared
- libraries, we don't want to access trampoline entries. This
- approach has a consequence of the necessity to bring the whole
- shared library at first, in order do anything with it (putting
- breakpoints, using malloc, etc). On the other side, this is
- consistient with gdb's behaviour on a SUN platform. */
-
- /* Trying to prefer *real* function entry over its trampoline,
- by assigning `mst_unknown' type to trampoline entries fails.
- Gdb treats those entries as chars. FIXME. */
-
- /* Recording this entry is necessary. Single stepping relies on
- this vector to get an idea about function address boundaries. */
-
- prim_record_minimal_symbol (0, cs->c_value, mst_unknown);
-#else
+ else
+ filestring = cs->c_name;
- /* record trampoline code entries as mst_unknown symbol. When we
- lookup mst symbols, we will choose mst_text over mst_unknown. */
+ start_stabs ();
+ start_symtab (filestring, (char *)NULL, (CORE_ADDR)0);
+ last_csect_name = 0;
- RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_unknown,
- symname_alloced);
-#endif
- continue;
- }
+ /* reset file start and end addresses. A compilation unit with no text
+ (only data) should have zero file boundaries. */
+ file_start_addr = file_end_addr = 0;
break;
- default : /* all other XTY_XXXs */
+ case C_FUN:
+ fcn_stab_saved = *cs;
break;
- } /* switch CSECT_SMTYP() */ }
-
- switch (cs->c_sclass) {
-
- case C_FILE:
-
- /* see if the last csect needs to be recorded. */
- if (last_csect_name && !misc_func_recorded) {
-
- /* if no misc. function recorded in the last seen csect, enter
- it as a function. This will take care of functions like
- strcmp() compiled by xlc. */
-
- int alloced = 0;
- RECORD_MINIMAL_SYMBOL (last_csect_name, last_csect_val,
- mst_text, alloced);
- }
+ case C_FCN:
+ if (STREQ (cs->c_name, ".bf"))
+ {
+ CORE_ADDR off = ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT);
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ 0, cs->c_naux, &main_aux);
- /* c_value field contains symnum of next .file entry in table
- or symnum of first global after last .file. */
+ within_function = 1;
- next_file_symnum = cs->c_value;
+ new = push_context (0, fcn_start_addr + off);
- /* complete symbol table for last object file containing
- debugging information. */
+ new->name = define_symbol
+ (fcn_cs_saved.c_value + off,
+ fcn_stab_saved.c_name, 0, 0, objfile);
+ if (new->name != NULL)
+ SYMBOL_SECTION (new->name) = SECT_OFF_TEXT;
+ }
+ else if (STREQ (cs->c_name, ".ef"))
+ {
- /* Whether or not there was a csect in the previous file, we have to call
- `end_stabs' and `start_stabs' to reset type_vector,
- line_vector, etc. structures. */
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ 0, cs->c_naux, &main_aux);
- complete_symtab (filestring, file_start_addr);
- cur_src_end_addr = file_end_addr;
- end_symtab (file_end_addr, 1, 0, objfile);
- end_stabs ();
- start_stabs ();
- start_symtab (cs->c_name, (char *)NULL, (CORE_ADDR)0);
- last_csect_name = 0;
+ /* The value of .ef is the address of epilogue code;
+ not useful for gdb. */
+ /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno
+ contains number of lines to '}' */
- /* reset file start and end addresses. A compilation unit with no text
- (only data) should have zero file boundaries. */
- file_start_addr = file_end_addr = 0;
+ if (context_stack_depth <= 0)
+ { /* We attempted to pop an empty context stack */
+ complain (&ef_complaint, cs->c_symnum);
+ within_function = 0;
+ break;
+ }
+ new = pop_context ();
+ /* Stack must be empty now. */
+ if (context_stack_depth > 0 || new == NULL)
+ {
+ complain (&ef_complaint, cs->c_symnum);
+ within_function = 0;
+ break;
+ }
- filestring = cs->c_name;
- break;
+ finish_block (new->name, &local_symbols, new->old_blocks,
+ new->start_addr,
+ (fcn_cs_saved.c_value
+ + fcn_aux_saved.x_sym.x_misc.x_fsize
+ + ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT)),
+ objfile);
+ within_function = 0;
+ }
+ break;
+ case C_BSTAT:
+ /* Begin static block. */
+ {
+ struct internal_syment symbol;
- case C_FUN:
+ read_symbol (&symbol, cs->c_value);
+ static_block_base = symbol.n_value;
+ static_block_section =
+ secnum_to_section (symbol.n_scnum, objfile);
+ }
+ break;
-#ifdef NO_DEFINE_SYMBOL
- /* For a function stab, just save its type in `fcn_type_saved', and leave
- it for the `.bf' processing. */
- {
- char *pp = (char*) index (cs->c_name, ':');
+ case C_ESTAT:
+ /* End of static block. */
+ static_block_base = 0;
+ static_block_section = -1;
+ break;
- if (!pp || ( *(pp+1) != 'F' && *(pp+1) != 'f'))
- fatal ("Unrecognized stab");
- pp += 2;
+ case C_ARG:
+ case C_REGPARM:
+ case C_REG:
+ case C_TPDEF:
+ case C_STRTAG:
+ case C_UNTAG:
+ case C_ENTAG:
+ {
+ static struct complaint msg =
+ {"Unrecognized storage class %d.", 0, 0};
+ complain (&msg, cs->c_sclass);
+ }
+ break;
- if (fcn_type_saved)
- fatal ("Unprocessed function type");
+ case C_LABEL:
+ case C_NULL:
+ /* Ignore these. */
+ break;
- fcn_type_saved = lookup_function_type (read_type (&pp, objfile));
- }
-#else
- fcn_stab_saved = *cs;
-#endif
- break;
-
+ case C_HIDEXT:
+ case C_STAT:
+ break;
- case C_FCN:
- if (STREQ (cs->c_name, ".bf")) {
+ case C_BINCL:
+ /* beginning of include file */
+ /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted
+ order. Thus, when wee see them, we might not know enough info
+ to process them. Thus, we'll be saving them into a table
+ (inclTable) and postpone their processing. */
- bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- main_aux);
+ record_include_begin (cs);
+ break;
- within_function = 1;
+ case C_EINCL:
+ /* End of include file. */
+ /* See the comment after case C_BINCL. */
+ record_include_end (cs);
+ break;
- /* Linenos are now processed on a file-by-file, not fn-by-fn, basis.
+ case C_BLOCK:
+ if (STREQ (cs->c_name, ".bb"))
+ {
+ depth++;
+ new = push_context (depth,
+ (cs->c_value
+ + ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT)));
+ }
+ else if (STREQ (cs->c_name, ".eb"))
+ {
+ if (context_stack_depth <= 0)
+ { /* We attempted to pop an empty context stack */
+ complain (&eb_complaint, cs->c_symnum);
+ break;
+ }
+ new = pop_context ();
+ if (depth-- != new->depth)
+ {
+ complain (&eb_complaint, cs->c_symnum);
+ break;
+ }
+ if (local_symbols && context_stack_depth > 0)
+ {
+ /* Make a block for the local symbols within. */
+ finish_block (new->name, &local_symbols, new->old_blocks,
+ new->start_addr,
+ (cs->c_value
+ + ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT)),
+ objfile);
+ }
+ local_symbols = new->locals;
+ }
+ break;
- /* Two reasons:
-
- 1) xlc (IBM's native c compiler) postpones static function code
- emission to the end of a compilation unit. This way it can
- determine if those functions (statics) are needed or not, and
- can do some garbage collection (I think). This makes line
- numbers and corresponding addresses unordered, and we end up
- with a line table like:
-
-
- lineno addr
- foo() 10 0x100
- 20 0x200
- 30 0x300
-
- foo3() 70 0x400
- 80 0x500
- 90 0x600
-
- static foo2()
- 40 0x700
- 50 0x800
- 60 0x900
-
- and that breaks gdb's binary search on line numbers, if the
- above table is not sorted on line numbers. And that sort
- should be on function based, since gcc can emit line numbers
- like:
-
- 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.
-
- arrange_linenos() will do this sorting.
-
-
- 2) aix symbol table might look like:
-
- c_file // beginning of a new file
- .bi // beginning of include file
- .ei // end of include file
- .bi
- .ei
-
- basically, .bi/.ei pairs do not necessarily encapsulate
- their scope. They need to be recorded, and processed later
- on when we come the end of the compilation unit.
- Include table (inclTable) and process_linenos() handle
- that.
- */
- mark_first_line (fcn_line_offset, cs->c_symnum);
-
- new = push_context (0, fcn_start_addr);
-
-#ifdef NO_DEFINE_SYMBOL
- new->name = process_xcoff_symbol (&fcn_cs_saved, objfile);
-
- /* Between a function symbol and `.bf', there always will be a function
- stab. We save function type when processing that stab. */
-
- if (fcn_type_saved == NULL) {
- printf ("Unknown function type: symbol 0x%x\n", cs->c_symnum);
- SYMBOL_TYPE (new->name) = lookup_function_type (builtin_type_int);
- }
- else {
- SYMBOL_TYPE (new->name) = fcn_type_saved;
- fcn_type_saved = NULL;
- }
-#else
- new->name = define_symbol
- (fcn_cs_saved.c_value, fcn_stab_saved.c_name, 0, 0, objfile);
-#endif
- }
- else if (STREQ (cs->c_name, ".ef")) {
-
- bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- main_aux);
-
- /* the value of .ef is the address of epilogue code;
- not useful for gdb */
- /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno
- contains number of lines to '}' */
-
- fcn_last_line = main_aux->x_sym.x_misc.x_lnsz.x_lnno;
- new = pop_context ();
- if (context_stack_depth != 0)
- error ("invalid symbol data; .bf/.ef/.bb/.eb symbol mismatch, at symbol %d.",
- symnum);
-
- finish_block (new->name, &local_symbols, new->old_blocks,
- new->start_addr,
- fcn_cs_saved.c_value +
- fcn_aux_saved.x_sym.x_misc.x_fsize, objfile);
- within_function = 0;
- }
- break;
-
- case C_BSTAT : /* begin static block */
- static_block_base = read_symbol_nvalue (symtbl, cs->c_value);
- break;
-
- case C_ESTAT : /* end of static block */
- static_block_base = 0;
- break;
-
- case C_ARG : /* These are not implemented. */
- case C_REGPARM :
- case C_TPDEF :
- case C_STRTAG :
- case C_UNTAG :
- case C_ENTAG :
- printf ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass);
- break;
-
- case C_HIDEXT : /* ignore these.. */
- case C_LABEL :
- case C_NULL :
- break;
-
- case C_BINCL : /* beginning of include file */
-
- /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted
- order. Thus, when wee see them, we might not know enough info
- to process them. Thus, we'll be saving them into a table
- (inclTable) and postpone their processing. */
-
- record_include_begin (cs);
- break;
-
- case C_EINCL : /* end of include file */
- /* see the comment after case C_BINCL. */
- record_include_end (cs);
- break;
-
- case C_BLOCK :
- if (STREQ (cs->c_name, ".bb")) {
- depth++;
- new = push_context (depth, cs->c_value);
- }
- else if (STREQ (cs->c_name, ".eb")) {
- new = pop_context ();
- if (depth != new->depth)
- error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.",
- symnum);
-
- depth--;
- if (local_symbols && context_stack_depth > 0) {
- /* Make a block for the local symbols within. */
- finish_block (new->name, &local_symbols, new->old_blocks,
- new->start_addr, cs->c_value, objfile);
+ default:
+ process_xcoff_symbol (cs, objfile);
+ break;
}
- local_symbols = new->locals;
- }
- break;
-
- default :
- process_xcoff_symbol (cs, objfile);
- break;
}
- } /* while */
-
if (last_source_file)
{
- end_symtab (cur_src_end_addr, 1, 0, objfile);
+ struct symtab *s;
+
+ complete_symtab (filestring, file_start_addr);
+ cur_src_end_addr = file_end_addr;
+ s = end_symtab (file_end_addr, 1, 0, objfile, SECT_OFF_TEXT);
+ /* When reading symbols for the last C_FILE of the objfile, try
+ to make sure that we set pst->symtab to the symtab for the
+ file, not to the _globals_ symtab. I'm not sure whether this
+ actually works right or when/if it comes up. */
+ if (pst->symtab == NULL)
+ pst->symtab = s;
end_stabs ();
}
-
- free (symtbl);
- current_objfile = NULL;
-
- /* Record the toc offset value of this symbol table into ldinfo structure.
- If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain
- this information would be file auxiliary header. */
-
-#ifndef FAKING_RS6000
- xcoff_add_toc_to_loadinfo (toc_offset);
-#endif
}
#define SYMBOL_DUP(SYMBOL1, SYMBOL2) \
(ALLOCED) ? (NAME) : obstack_copy0 (&objfile->symbol_obstack, (NAME), strlen (NAME));
+static struct type *func_symbol_type;
+static struct type *var_symbol_type;
+
/* process one xcoff symbol. */
static struct symbol *
struct symbol onesymbol;
register struct symbol *sym = &onesymbol;
struct symbol *sym2 = NULL;
- struct type *ttype;
- char *name, *pp, *qq;
- int struct_and_type_combined;
- int nameless;
+ char *name, *pp;
+
+ int sec;
+ CORE_ADDR off;
+
+ if (cs->c_secnum < 0)
+ {
+ /* The value is a register number, offset within a frame, etc.,
+ and does not get relocated. */
+ off = 0;
+ sec = -1;
+ }
+ else
+ {
+ sec = secnum_to_section (cs->c_secnum, objfile);
+ off = ANOFFSET (objfile->section_offsets, sec);
+ }
name = cs->c_name;
if (name[0] == '.')
++name;
- bzero (sym, sizeof (struct symbol));
+ memset (sym, '\0', sizeof (struct symbol));
/* default assumptions */
- SYMBOL_VALUE (sym) = cs->c_value;
+ SYMBOL_VALUE (sym) = cs->c_value + off;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile);
- if (ISFCN (cs->c_type)) {
-
- /* At this point, we don't know the type of the function and assume it
- is int. This will be patched with the type from its stab entry later
- on in patch_block_stabs () */
-
- SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
- SYMBOL_TYPE (sym) = lookup_function_type (lookup_fundamental_type (objfile, FT_INTEGER));
-
- SYMBOL_CLASS (sym) = LOC_BLOCK;
- SYMBOL_DUP (sym, sym2);
-
- if (cs->c_sclass == C_EXT)
- add_symbol_to_list (sym2, &global_symbols);
- else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT)
- add_symbol_to_list (sym2, &file_symbols);
- }
-
- else {
-
- /* in case we can't figure out the type, default is `int'. */
- SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, FT_INTEGER);
-
- switch (cs->c_sclass)
+ if (ISFCN (cs->c_type))
{
-#if 0
- case C_FUN:
- if (fcn_cs_saved.c_sclass == C_EXT)
- add_stab_to_list (name, &global_stabs);
- else
- add_stab_to_list (name, &file_stabs);
- break;
-#endif
-
- case C_DECL: /* a type decleration?? */
-
-#if defined(NO_TYPEDEFS) || defined(NO_DEFINE_SYMBOL)
- qq = (char*) strchr (name, ':');
- if (!qq) /* skip if there is no ':' */
- return NULL;
-
- nameless = (qq == name);
-
- struct_and_type_combined = (qq[1] == 'T' && qq[2] == 't');
- pp = qq + (struct_and_type_combined ? 3 : 2);
-
-
- /* To handle GNU C++ typename abbreviation, we need to be able to fill
- in a type's name as soon as space for that type is allocated. */
-
- if (struct_and_type_combined && name != qq) {
+ /* At this point, we don't know the type of the function. This
+ will be patched with the type from its stab entry later on in
+ patch_block_stabs (), unless the file was compiled without -g. */
- int typenums[2];
- struct type *tmp_type;
- char *tmp_pp = pp;
-
- read_type_number (&tmp_pp, typenums);
- tmp_type = dbx_alloc_type (typenums, objfile);
-
- if (tmp_type && !TYPE_NAME (tmp_type) && !nameless)
- TYPE_NAME (tmp_type) = SYMBOL_NAME (sym) =
- obsavestring (name, qq-name,
- &objfile->symbol_obstack);
- }
- ttype = SYMBOL_TYPE (sym) = read_type (&pp, objfile);
-
- /* if there is no name for this typedef, you don't have to keep its
- symbol, since nobody could ask for it. Otherwise, build a symbol
- and add it into symbol_list. */
-
- if (nameless)
- return;
+ SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_TYPE (sym) = func_symbol_type;
-#ifdef NO_TYPEDEFS
- /* Transarc wants to eliminate type definitions from the symbol table.
- Limited debugging capabilities, but faster symbol table processing
- and less memory usage. Note that tag definitions (starting with
- 'T') will remain intact. */
+ SYMBOL_CLASS (sym) = LOC_BLOCK;
+ SYMBOL_DUP (sym, sym2);
- if (qq[1] != 'T' && (!TYPE_NAME (ttype) || *(TYPE_NAME (ttype)) == '\0')) {
+ if (cs->c_sclass == C_EXT)
+ add_symbol_to_list (sym2, &global_symbols);
+ else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT)
+ add_symbol_to_list (sym2, &file_symbols);
+ }
+ else
+ {
+ /* In case we can't figure out the type, provide default. */
+ SYMBOL_TYPE (sym) = var_symbol_type;
- if (SYMBOL_NAME (sym))
- TYPE_NAME (ttype) = SYMBOL_NAME (sym);
+ switch (cs->c_sclass)
+ {
+#if 0
+ /* The values of functions and global symbols are now resolved
+ via the global_sym_chain in stabsread.c. */
+ case C_FUN:
+ if (fcn_cs_saved.c_sclass == C_EXT)
+ add_stab_to_list (name, &global_stabs);
else
- TYPE_NAME (ttype) = obsavestring (name, qq-name);
-
- return;
- }
-
-#endif /* !NO_TYPEDEFS */
-
- /* read_type() will return null if type (or tag) definition was
- unnnecessarily duplicated. Also, if the symbol doesn't have a name,
- there is no need to keep it in symbol table. */
- /* The above argument no longer valid. read_type() never returns NULL. */
-
- if (!ttype)
- return NULL;
-
- /* if there is no name for this typedef, you don't have to keep its
- symbol, since nobody could ask for it. Otherwise, build a symbol
- and add it into symbol_list. */
-
- if (qq[1] == 'T')
- SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
- else if (qq[1] == 't')
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- else {
- warning ("Unrecognized stab string.\n");
- return NULL;
- }
-
- SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- if (!SYMBOL_NAME (sym))
- SYMBOL_NAME (sym) = obsavestring (name, qq-name);
-
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list
- (sym2, within_function ? &local_symbols : &file_symbols);
+ add_stab_to_list (name, &file_stabs);
+ break;
- /* For a combination of struct and type, add one more symbol
- for the type. */
+ case C_GSYM:
+ add_stab_to_list (name, &global_stabs);
+ break;
+#endif
- if (struct_and_type_combined) {
- SYMBOL_DUP (sym, sym2);
- SYMBOL_NAMESPACE (sym2) = VAR_NAMESPACE;
- add_symbol_to_list
- (sym2, within_function ? &local_symbols : &file_symbols);
- }
+ case C_BCOMM:
+ common_block_start (cs->c_name, objfile);
+ break;
- /* assign a name to the type node. */
+ case C_ECOMM:
+ common_block_end (objfile);
+ break;
- if (!TYPE_NAME (ttype) || *(TYPE_NAME (ttype)) == '\0') {
- if (struct_and_type_combined)
- TYPE_NAME (ttype) = SYMBOL_NAME (sym);
- else if (qq[1] == 'T') /* struct namespace */
- TYPE_NAME (ttype) = concat (
- TYPE_CODE (ttype) == TYPE_CODE_UNION ? "union " :
- TYPE_CODE (ttype) == TYPE_CODE_STRUCT? "struct " : "enum ",
- SYMBOL_NAME (sym), NULL);
- }
- break;
+ default:
+ complain (&storclass_complaint, cs->c_sclass);
+ /* FALLTHROUGH */
-#else /* !NO_DEFINE_SYMBOL */
- return define_symbol (cs->c_value, cs->c_name, 0, 0, objfile);
-#endif
+ case C_DECL:
+ case C_PSYM:
+ case C_RPSYM:
+ case C_ECOML:
+ case C_LSYM:
+ case C_RSYM:
+ case C_GSYM:
- case C_GSYM:
- add_stab_to_list (name, &global_stabs);
- break;
-
- case C_PSYM:
- case C_RPSYM:
-
-#ifdef NO_DEFINE_SYMBOL
- if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL)
- return NULL;
- SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack);
- SYMBOL_CLASS (sym) = (cs->c_sclass == C_PSYM) ? LOC_ARG : LOC_REGPARM;
- pp += 2;
- SYMBOL_TYPE (sym) = read_type (&pp, objfile);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
-#else
- sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile);
- SYMBOL_CLASS (sym) = (cs->c_sclass == C_PSYM) ? LOC_ARG : LOC_REGPARM;
- return sym;
-#endif
+ {
+ sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile);
+ if (sym != NULL)
+ {
+ SYMBOL_SECTION (sym) = sec;
+ }
+ return sym;
+ }
- case C_STSYM:
-
-#ifdef NO_DEFINE_SYMBOL
- if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL)
- return NULL;
- SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack);
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_VALUE (sym) += static_block_base;
- pp += 2;
- SYMBOL_TYPE (sym) = read_type (&pp, objfile);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list
- (sym2, within_function ? &local_symbols : &file_symbols);
- break;
-#else
- /* If we are going to use Sun dbx's define_symbol(), we need to
- massage our stab string a little. Change 'V' type to 'S' to be
- comparible with Sun. */
-
- if (*name == ':' || (pp = (char *) index (name, ':')) == NULL)
- return NULL;
-
- ++pp;
- if (*pp == 'V') *pp = 'S';
- sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile);
- SYMBOL_VALUE (sym) += static_block_base;
- return sym;
-#endif
+ case C_STSYM:
- case C_LSYM:
- if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL)
- return NULL;
- SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack);
- SYMBOL_CLASS (sym) = LOC_LOCAL;
- pp += 1;
- SYMBOL_TYPE (sym) = read_type (&pp, objfile);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
-
- case C_AUTO:
- SYMBOL_CLASS (sym) = LOC_LOCAL;
- SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
+ /* For xlc (not GCC), the 'V' symbol descriptor is used for
+ all statics and we need to distinguish file-scope versus
+ function-scope using within_function. We do this by
+ changing the string we pass to define_symbol to use 'S'
+ where we need to, which is not necessarily super-clean,
+ but seems workable enough. */
- case C_EXT:
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &global_symbols);
- break;
+ if (*name == ':' || (pp = (char *) strchr(name, ':')) == NULL)
+ return NULL;
- case C_STAT:
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list
- (sym2, within_function ? &local_symbols : &file_symbols);
- break;
+ ++pp;
+ if (*pp == 'V' && !within_function)
+ *pp = 'S';
+ sym = define_symbol ((cs->c_value
+ + ANOFFSET (objfile->section_offsets,
+ static_block_section)),
+ cs->c_name, 0, 0, objfile);
+ if (sym != NULL)
+ {
+ SYMBOL_VALUE (sym) += static_block_base;
+ SYMBOL_SECTION (sym) = static_block_section;
+ }
+ return sym;
- case C_REG:
- printf ("ERROR! C_REG is not fully implemented!\n");
- SYMBOL_CLASS (sym) = LOC_REGISTER;
- SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
-
- case C_RSYM:
- pp = (char*) strchr (name, ':');
-#ifdef NO_DEFINE_SYMBOL
- SYMBOL_CLASS (sym) = LOC_REGISTER;
- SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (cs->c_value);
- if (pp) {
- SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack);
- pp += 2;
- if (*pp)
- SYMBOL_TYPE (sym) = read_type (&pp, objfile);
}
- else
- /* else this is not a stab entry, suppose the type is either
- `int' or `float', depending on the register class. */
-
- SYMBOL_TYPE (sym) = (SYMBOL_VALUE (sym) < 32)
- ? lookup_fundamental_type (objfile, FT_INTEGER)
- : lookup_fundamental_type (objfile, FT_FLOAT);
+ }
+ return sym2;
+}
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
-#else
- if (pp) {
- sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile);
- return sym;
- }
- else {
- complain (rsym_complaint, name);
- return NULL;
- }
-#endif
+/* Extract the file name from the aux entry of a C_FILE symbol. Return
+ only the last component of the name. Result is in static storage and
+ is only good for temporary use. */
- default :
- complain (storclass_complaint, cs->c_sclass);
- return NULL;
+static char *
+coff_getfilename (aux_entry, objfile)
+ union internal_auxent *aux_entry;
+ struct objfile *objfile;
+{
+ static char buffer[BUFSIZ];
+ register char *temp;
+ char *result;
+
+ if (aux_entry->x_file.x_n.x_zeroes == 0)
+ strcpy (buffer,
+ ((struct coff_symfile_info *)objfile->sym_private)->strtbl
+ + aux_entry->x_file.x_n.x_offset);
+ else
+ {
+ strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN);
+ buffer[FILNMLEN] = '\0';
}
- }
- return sym2;
+ result = buffer;
+
+ /* FIXME: We should not be throwing away the information about what
+ directory. It should go into dirname of the symtab, or some such
+ place. */
+ if ((temp = strrchr (result, '/')) != NULL)
+ result = temp + 1;
+ return (result);
}
+/* Set *SYMBOL to symbol number symno in symtbl. */
+static void
+read_symbol (symbol, symno)
+ struct internal_syment *symbol;
+ int symno;
+{
+ int nsyms =
+ ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private)
+ ->symtbl_num_syms;
+ char *stbl =
+ ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private)
+ ->symtbl;
+ if (symno < 0 || symno >= nsyms)
+ {
+ static struct complaint msg =
+ {"Invalid symbol offset", 0, 0};
+ complain (&msg);
+ symbol->n_value = 0;
+ symbol->n_scnum = -1;
+ return;
+ }
+ bfd_coff_swap_sym_in (this_symtab_psymtab->objfile->obfd,
+ stbl + (symno*local_symesz),
+ symbol);
+}
+
+/* Get value corresponding to symbol number symno in symtbl. */
static int
-read_symbol_nvalue (symtable, symno)
- char *symtable;
+read_symbol_nvalue (symno)
int symno;
{
struct internal_syment symbol[1];
- bfd_coff_swap_sym_in (symfile_bfd, symtable + (symno*local_symesz), symbol);
+ read_symbol (symbol, symno);
return symbol->n_value;
}
+/* Find the address of the function corresponding to symno, where
+ symno is the symbol pointed to by the linetable. */
+
static int
-read_symbol_lineno (symtable, symno)
- char *symtable;
- int symno;
+read_symbol_lineno (symno)
+ int symno;
{
+ int nsyms =
+ ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private)
+ ->symtbl_num_syms;
+ char *stbl =
+ ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private)
+ ->symtbl;
struct internal_syment symbol[1];
union internal_auxent main_aux[1];
- int ii;
+ if (symno < 0)
+ {
+ complain (&bf_notfound_complaint);
+ return 0;
+ }
- for (ii = 0; ii < 50; ii++) {
- bfd_coff_swap_sym_in (symfile_bfd,
- symtable + (symno*local_symesz), symbol);
- if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf"))
- goto gotit;
- symno += symbol->n_numaux+1;
- }
+ /* Note that just searching for a short distance (e.g. 50 symbols)
+ is not enough, at least in the following case.
+
+ .extern foo
+ [many .stabx entries]
+ [a few functions, referring to foo]
+ .globl foo
+ .bf
+
+ What happens here is that the assembler moves the .stabx entries
+ to right before the ".bf" for foo, but the symbol for "foo" is before
+ all the stabx entries. See PR gdb/2222. */
- complain (bf_notfound_complaint);
+ /* Maintaining a table of .bf entries might be preferable to this search.
+ If I understand things correctly it would need to be done only for
+ the duration of a single psymtab to symtab conversion. */
+ while (symno < nsyms)
+ {
+ bfd_coff_swap_sym_in (symfile_bfd,
+ stbl + (symno * local_symesz), symbol);
+ if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf"))
+ goto gotit;
+ symno += symbol->n_numaux + 1;
+ }
+
+ complain (&bf_notfound_complaint);
return 0;
gotit:
/* take aux entry and return its lineno */
symno++;
- bfd_coff_swap_aux_in (symfile_bfd, symtable+(symno*local_symesz),
- symbol->n_type, symbol->n_sclass, main_aux);
+ bfd_coff_swap_aux_in (this_symtab_psymtab->objfile->obfd,
+ stbl + symno * local_symesz,
+ symbol->n_type, symbol->n_sclass,
+ 0, symbol->n_numaux, main_aux);
return main_aux->x_sym.x_misc.x_lnsz.x_lnno;
}
* mainline code can read the whole thing for efficiency.
*/
static void
-find_linenos(abfd, asect, vpinfo)
-bfd *abfd;
-sec_ptr asect;
-PTR vpinfo;
+find_linenos (abfd, asect, vpinfo)
+ bfd *abfd;
+ sec_ptr asect;
+ PTR vpinfo;
{
struct coff_symfile_info *info;
int size, count;
if (!STREQ (asect->name, ".text") || count == 0)
return;
- size = count * coff_data (symfile_bfd)->local_linesz;
- info = (struct coff_symfile_info *)vpinfo;
+ size = count * coff_data (abfd)->local_linesz;
+ info = (struct coff_symfile_info *)vpinfo;
offset = asect->line_filepos;
maxoff = offset + size;
if (maxoff > info->max_lineno_offset)
info->max_lineno_offset = maxoff;
}
+\f
+static void xcoff_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *));
+static void
+xcoff_psymtab_to_symtab_1 (pst)
+ struct partial_symtab *pst;
+{
+ struct cleanup *old_chain;
+ int i;
+
+ if (!pst)
+ return;
-/* Read in all the line numbers for fast lookups later. Leave them in
- external (unswapped) format in memory; we'll swap them as we enter
- them into GDB's data structures. */
+ if (pst->readin)
+ {
+ fprintf_unfiltered
+ (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n",
+ pst->filename);
+ return;
+ }
-static int
-init_lineno (abfd, offset, size)
- bfd *abfd;
- file_ptr offset;
- int size;
-{
- int val;
+ /* Read in all partial symtabs on which this one is dependent */
+ for (i = 0; i < pst->number_of_dependencies; i++)
+ if (!pst->dependencies[i]->readin)
+ {
+ /* Inform about additional files that need to be read in. */
+ if (info_verbose)
+ {
+ fputs_filtered (" ", gdb_stdout);
+ wrap_here ("");
+ fputs_filtered ("and ", gdb_stdout);
+ wrap_here ("");
+ printf_filtered ("%s...", pst->dependencies[i]->filename);
+ wrap_here (""); /* Flush output */
+ gdb_flush (gdb_stdout);
+ }
+ xcoff_psymtab_to_symtab_1 (pst->dependencies[i]);
+ }
- if (bfd_seek(abfd, offset, L_SET) < 0)
- return -1;
+ if (((struct symloc *)pst->read_symtab_private)->numsyms != 0)
+ {
+ /* Init stuff necessary for reading in symbols. */
+ stabsread_init ();
+ buildsym_init ();
+ old_chain = make_cleanup (really_free_pendings, 0);
- linetab = (char *) xmalloc(size);
+ read_xcoff_symtab (pst);
+ sort_symtab_syms (pst->symtab);
- val = bfd_read(linetab, 1, size, abfd);
- if (val != size)
- return -1;
+ do_cleanups (old_chain);
+ }
- linetab_offset = offset;
- linetab_size = size;
- make_cleanup (free, linetab); /* Be sure it gets de-allocated. */
- return 0;
+ pst->readin = 1;
}
-\f
-/* dbx allows the text of a symbol name to be continued into the
- next symbol name! When such a continuation is encountered
- (a \ at the end of the text of a name)
- call this function to get the continuation. */
-/* So far, I haven't seen this happenning xlc output. I doubt we'll need this
- for xcoff. */
-#undef next_symbol_text
-#define next_symbol_text() \
- printf ("Gdb Error: symbol names on multiple lines not implemented.\n")
+static void xcoff_psymtab_to_symtab PARAMS ((struct partial_symtab *));
+
+/* Read in all of the symbols for a given psymtab for real.
+ Be verbose about it if the user wants that. */
+
+static void
+xcoff_psymtab_to_symtab (pst)
+ struct partial_symtab *pst;
+{
+ bfd *sym_bfd;
+
+ if (!pst)
+ return;
+
+ if (pst->readin)
+ {
+ fprintf_unfiltered
+ (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n",
+ pst->filename);
+ return;
+ }
+
+ if (((struct symloc *)pst->read_symtab_private)->numsyms != 0
+ || pst->number_of_dependencies)
+ {
+ /* Print the message now, before reading the string table,
+ to avoid disconcerting pauses. */
+ if (info_verbose)
+ {
+ printf_filtered ("Reading in symbols for %s...", pst->filename);
+ gdb_flush (gdb_stdout);
+ }
+
+ sym_bfd = pst->objfile->obfd;
+ next_symbol_text_func = xcoff_next_symbol_text;
+ xcoff_psymtab_to_symtab_1 (pst);
+
+ /* Match with global symbols. This only needs to be done once,
+ after all of the symtabs and dependencies have been read in. */
+ scan_file_globals (pst->objfile);
+
+ /* Finish up the debug error message. */
+ if (info_verbose)
+ printf_filtered ("done.\n");
+ }
+}
+\f
static void
xcoff_new_init (objfile)
struct objfile *objfile;
{
+ stabsread_new_init ();
+ buildsym_new_init ();
}
-
-/* xcoff_symfile_init()
- is the xcoff-specific initialization routine for reading symbols.
- It is passed an objfile which contains, among other things,
- the BFD for the file whose symbols are being read, and a slot for
- a pointer to "private data" which we fill with cookies and other
- treats for xcoff_symfile_read().
+/* Do initialization in preparation for reading symbols from OBJFILE.
We will only be called if this is an XCOFF or XCOFF-like file.
BFD handles figuring out the format of the file, and code in symfile.c
- uses BFD's determination to vector to us.
-
- The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */
+ uses BFD's determination to vector to us. */
static void
xcoff_symfile_init (objfile)
- struct objfile *objfile;
+ struct objfile *objfile;
{
- bfd *abfd = objfile->obfd;
-
/* Allocate struct to keep track of the symfile */
objfile -> sym_private = xmmalloc (objfile -> md,
sizeof (struct coff_symfile_info));
mfree (objfile -> md, objfile -> sym_private);
}
- /* Start with a fresh include table for the next objfile. */
-
+ /* Start with a fresh include table for the next objfile. */
if (inclTable)
{
free (inclTable);
}
-static int
-init_stringtab(abfd, offset, objfile)
+static void
+init_stringtab (abfd, offset, objfile)
bfd *abfd;
file_ptr offset;
struct objfile *objfile;
long length;
int val;
unsigned char lengthbuf[4];
+ char *strtbl;
- if (bfd_seek(abfd, offset, L_SET) < 0)
- return -1;
+ ((struct coff_symfile_info *)objfile->sym_private)->strtbl = NULL;
- val = bfd_read((char *)lengthbuf, 1, sizeof lengthbuf, abfd);
- length = bfd_h_get_32(abfd, lengthbuf);
+ if (bfd_seek (abfd, offset, SEEK_SET) < 0)
+ error ("cannot seek to string table in %s: %s",
+ bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
+
+ val = bfd_read ((char *)lengthbuf, 1, sizeof lengthbuf, abfd);
+ length = bfd_h_get_32 (abfd, lengthbuf);
/* If no string table is needed, then the file may end immediately
- after the symbols. Just return with `strtbl' set to null. */
+ after the symbols. Just return with `strtbl' set to NULL. */
- if (val != sizeof length || length < sizeof length)
- return 0;
+ if (val != sizeof lengthbuf || length < sizeof lengthbuf)
+ return;
/* Allocate string table from symbol_obstack. We will need this table
as long as we have its symbol table around. */
- strtbl = (char*) obstack_alloc (&objfile->symbol_obstack, length);
- if (strtbl == NULL)
- return -1;
+ strtbl = (char *) obstack_alloc (&objfile->symbol_obstack, length);
+ ((struct coff_symfile_info *)objfile->sym_private)->strtbl = strtbl;
- bcopy(&length, strtbl, sizeof length);
- if (length == sizeof length)
- return 0;
+ /* Copy length buffer, the first byte is usually zero and is
+ used for stabs with a name length of zero. */
+ memcpy (strtbl, lengthbuf, sizeof lengthbuf);
+ if (length == sizeof lengthbuf)
+ return;
- val = bfd_read(strtbl + sizeof length, 1, length - sizeof length, abfd);
+ val = bfd_read (strtbl + sizeof lengthbuf, 1, length - sizeof lengthbuf,
+ abfd);
- if (val != length - sizeof length || strtbl[length - 1] != '\0')
- return -1;
+ if (val != length - sizeof lengthbuf)
+ error ("cannot read string table from %s: %s",
+ bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
+ if (strtbl[length - 1] != '\0')
+ error ("bad symbol file: string table does not end with null character");
- return 0;
+ return;
}
+\f
+/* If we have not yet seen a function for this psymtab, this is 0. If we
+ have seen one, it is the offset in the line numbers of the line numbers
+ for the psymtab. */
+static unsigned int first_fun_line_offset;
-static int
-init_debugsection(abfd)
- bfd *abfd;
+static struct partial_symtab *xcoff_start_psymtab
+ PARAMS ((struct objfile *, struct section_offsets *, char *, int,
+ struct partial_symbol *, struct partial_symbol *));
+
+/* Allocate and partially fill a partial symtab. It will be
+ completely filled at the end of the symbol list.
+
+ SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
+ is the address relative to which its symbols are (incremental) or 0
+ (normal). */
+
+static struct partial_symtab *
+xcoff_start_psymtab (objfile, section_offsets,
+ filename, first_symnum, global_syms, static_syms)
+ struct objfile *objfile;
+ struct section_offsets *section_offsets;
+ char *filename;
+ int first_symnum;
+ struct partial_symbol *global_syms;
+ struct partial_symbol *static_syms;
{
- register sec_ptr secp;
- bfd_size_type length;
+ struct partial_symtab *result =
+ start_psymtab_common (objfile, section_offsets,
+ filename,
+ /* We fill in textlow later. */
+ 0,
+ global_syms, static_syms);
+
+ result->read_symtab_private = (char *)
+ obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc));
+ ((struct symloc *)result->read_symtab_private)->first_symnum = first_symnum;
+ result->read_symtab = xcoff_psymtab_to_symtab;
+
+ /* Deduce the source language from the filename for this psymtab. */
+ psymtab_language = deduce_language_from_filename (filename);
+
+ return result;
+}
- if (debugsec) {
- free(debugsec);
- debugsec = NULL;
- }
+static struct partial_symtab *xcoff_end_psymtab
+ PARAMS ((struct partial_symtab *, char **, int, int,
+ struct partial_symtab **, int));
- secp = bfd_get_section_by_name(abfd, ".debug");
- if (!secp)
- return 0;
+/* Close off the current usage of PST.
+ Returns PST, or NULL if the partial symtab was empty and thrown away.
- if (!(length = bfd_section_size(abfd, secp)))
- return 0;
+ CAPPING_SYMBOL_NUMBER is the end of pst (exclusive).
- debugsec = (char *) xmalloc ((unsigned)length);
- if (debugsec == NULL)
- return -1;
+ INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES
+ are the information for includes and dependencies. */
- if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) {
- printf ("Can't read .debug section from symbol file\n");
- return -1;
- }
- return 0;
+static struct partial_symtab *
+xcoff_end_psymtab (pst, include_list, num_includes, capping_symbol_number,
+ dependency_list, number_dependencies)
+ struct partial_symtab *pst;
+ char **include_list;
+ int num_includes;
+ int capping_symbol_number;
+ struct partial_symtab **dependency_list;
+ int number_dependencies;
+{
+ int i;
+ struct objfile *objfile = pst -> objfile;
+
+ if (capping_symbol_number != -1)
+ ((struct symloc *)pst->read_symtab_private)->numsyms =
+ capping_symbol_number
+ - ((struct symloc *)pst->read_symtab_private)->first_symnum;
+ ((struct symloc *)pst->read_symtab_private)->lineno_off =
+ first_fun_line_offset;
+ first_fun_line_offset = 0;
+ pst->n_global_syms =
+ objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset);
+ pst->n_static_syms =
+ objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset);
+
+ pst->number_of_dependencies = number_dependencies;
+ if (number_dependencies)
+ {
+ pst->dependencies = (struct partial_symtab **)
+ obstack_alloc (&objfile->psymbol_obstack,
+ number_dependencies * sizeof (struct partial_symtab *));
+ memcpy (pst->dependencies, dependency_list,
+ number_dependencies * sizeof (struct partial_symtab *));
+ }
+ else
+ pst->dependencies = 0;
+
+ for (i = 0; i < num_includes; i++)
+ {
+ struct partial_symtab *subpst =
+ allocate_psymtab (include_list[i], objfile);
+
+ subpst->section_offsets = pst->section_offsets;
+ subpst->read_symtab_private =
+ (char *) obstack_alloc (&objfile->psymbol_obstack,
+ sizeof (struct symloc));
+ ((struct symloc *)subpst->read_symtab_private)->first_symnum = 0;
+ ((struct symloc *)subpst->read_symtab_private)->numsyms = 0;
+ subpst->textlow = 0;
+ subpst->texthigh = 0;
+
+ /* We could save slight bits of space by only making one of these,
+ shared by the entire set of include files. FIXME-someday. */
+ subpst->dependencies = (struct partial_symtab **)
+ obstack_alloc (&objfile->psymbol_obstack,
+ sizeof (struct partial_symtab *));
+ subpst->dependencies[0] = pst;
+ subpst->number_of_dependencies = 1;
+
+ subpst->globals_offset =
+ subpst->n_global_syms =
+ subpst->statics_offset =
+ subpst->n_static_syms = 0;
+
+ subpst->readin = 0;
+ subpst->symtab = 0;
+ subpst->read_symtab = pst->read_symtab;
+ }
+
+ sort_pst_symbols (pst);
+
+ /* If there is already a psymtab or symtab for a file of this name,
+ remove it. (If there is a symtab, more drastic things also
+ happen.) This happens in VxWorks. */
+ free_named_symtabs (pst->filename);
+
+ if (num_includes == 0
+ && number_dependencies == 0
+ && pst->n_global_syms == 0
+ && pst->n_static_syms == 0)
+ {
+ /* Throw away this psymtab, it's empty. We can't deallocate it, since
+ it is on the obstack, but we can forget to chain it on the list. */
+ /* Empty psymtabs happen as a result of header files which don't have
+ any symbols in them. There can be a lot of them. */
+ struct partial_symtab *prev_pst;
+
+ /* First, snip it out of the psymtab chain */
+
+ if (pst->objfile->psymtabs == pst)
+ pst->objfile->psymtabs = pst->next;
+ else
+ for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next)
+ if (prev_pst->next == pst)
+ prev_pst->next = pst->next;
+
+ /* Next, put it on a free list for recycling */
+
+ pst->next = pst->objfile->free_psymtabs;
+ pst->objfile->free_psymtabs = pst;
+
+ /* Indicate that psymtab was thrown away. */
+ pst = (struct partial_symtab *)NULL;
+ }
+ return pst;
+}
+
+static void swap_sym PARAMS ((struct internal_syment *,
+ union internal_auxent *, char **, char **,
+ unsigned int *,
+ struct objfile *));
+
+/* Swap raw symbol at *RAW and put the name in *NAME, the symbol in
+ *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over
+ the symbol and its auxents. */
+
+static void
+swap_sym (symbol, aux, name, raw, symnump, objfile)
+ struct internal_syment *symbol;
+ union internal_auxent *aux;
+ char **name;
+ char **raw;
+ unsigned int *symnump;
+ struct objfile *objfile;
+{
+ bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol);
+ if (symbol->n_zeroes)
+ {
+ /* If it's exactly E_SYMNMLEN characters long it isn't
+ '\0'-terminated. */
+ if (symbol->n_name[E_SYMNMLEN - 1] != '\0')
+ {
+ /* FIXME: wastes memory for symbols which we don't end up putting
+ into the minimal symbols. */
+ char *p;
+ p = obstack_alloc (&objfile->psymbol_obstack, E_SYMNMLEN + 1);
+ strncpy (p, symbol->n_name, E_SYMNMLEN);
+ p[E_SYMNMLEN] = '\0';
+ *name = p;
+ }
+ else
+ /* Point to the unswapped name as that persists as long as the
+ objfile does. */
+ *name = ((struct external_syment *)*raw)->e.e_name;
+ }
+ else if (symbol->n_sclass & 0x80)
+ {
+ *name = ((struct coff_symfile_info *)objfile->sym_private)->debugsec
+ + symbol->n_offset;
+ }
+ else
+ {
+ *name = ((struct coff_symfile_info *)objfile->sym_private)->strtbl
+ + symbol->n_offset;
+ }
+ ++*symnump;
+ *raw += coff_data (objfile->obfd)->local_symesz;
+ if (symbol->n_numaux > 0)
+ {
+ bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type,
+ symbol->n_sclass, 0, symbol->n_numaux, aux);
+
+ *symnump += symbol->n_numaux;
+ *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux;
+ }
}
static void
-free_debugsection()
+scan_xcoff_symtab (section_offsets, objfile)
+ struct section_offsets *section_offsets;
+ struct objfile *objfile;
{
- if (debugsec)
- free(debugsec);
- debugsec = NULL;
+ int toc_offset = 0; /* toc offset value in data section. */
+ char *filestring = NULL;
+
+ char *namestring;
+ int past_first_source_file = 0;
+ bfd *abfd;
+ unsigned int nsyms;
+
+ /* Current partial symtab */
+ struct partial_symtab *pst;
+
+ /* List of current psymtab's include files */
+ char **psymtab_include_list;
+ int includes_allocated;
+ int includes_used;
+
+ /* Index within current psymtab dependency list */
+ struct partial_symtab **dependency_list;
+ int dependencies_used, dependencies_allocated;
+
+ char *sraw_symbol;
+ struct internal_syment symbol;
+ union internal_auxent main_aux;
+ unsigned int ssymnum;
+
+ char *last_csect_name = NULL; /* last seen csect's name and value */
+ CORE_ADDR last_csect_val = 0;
+ int last_csect_sec = 0;
+ int misc_func_recorded = 0; /* true if any misc. function */
+
+ pst = (struct partial_symtab *) 0;
+
+ includes_allocated = 30;
+ includes_used = 0;
+ psymtab_include_list = (char **) alloca (includes_allocated *
+ sizeof (char *));
+
+ dependencies_allocated = 30;
+ dependencies_used = 0;
+ dependency_list =
+ (struct partial_symtab **) alloca (dependencies_allocated *
+ sizeof (struct partial_symtab *));
+
+ last_source_file = NULL;
+
+ abfd = objfile->obfd;
+
+ sraw_symbol = ((struct coff_symfile_info *)objfile->sym_private)->symtbl;
+ nsyms = ((struct coff_symfile_info *)objfile->sym_private)->symtbl_num_syms;
+ ssymnum = 0;
+ while (ssymnum < nsyms)
+ {
+ int sclass = ((struct external_syment *)sraw_symbol)->e_sclass[0] & 0xff;
+ /* This is the type we pass to partial-stab.h. A less kludgy solution
+ would be to break out partial-stab.h into its various parts--shuffle
+ off the DBXREAD_ONLY stuff to dbxread.c, and make separate
+ pstab-norm.h (for most types), pstab-sol.h (for N_SOL), etc. */
+ int stype;
+
+ QUIT;
+
+ switch (sclass)
+ {
+ case C_EXT:
+ case C_HIDEXT:
+ {
+ /* The CSECT auxent--always the last auxent. */
+ union internal_auxent csect_aux;
+ unsigned int symnum_before = ssymnum;
+
+ swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol,
+ &ssymnum, objfile);
+ if (symbol.n_numaux > 1)
+ {
+ bfd_coff_swap_aux_in
+ (objfile->obfd,
+ sraw_symbol - coff_data(abfd)->local_symesz,
+ symbol.n_type,
+ symbol.n_sclass,
+ symbol.n_numaux - 1,
+ symbol.n_numaux,
+ &csect_aux);
+ }
+ else
+ csect_aux = main_aux;
+
+ /* If symbol name starts with ".$" or "$", ignore it. */
+ if (namestring[0] == '$'
+ || (namestring[0] == '.' && namestring[1] == '$'))
+ break;
+
+ switch (csect_aux.x_csect.x_smtyp & 0x7)
+ {
+ case XTY_SD:
+ switch (csect_aux.x_csect.x_smclas)
+ {
+ case XMC_PR:
+ if (last_csect_name)
+ {
+ /* If no misc. function recorded in the last
+ seen csect, enter it as a function. This
+ will take care of functions like strcmp()
+ compiled by xlc. */
+
+ if (!misc_func_recorded)
+ {
+ RECORD_MINIMAL_SYMBOL
+ (last_csect_name, last_csect_val,
+ mst_text, last_csect_sec,
+ objfile);
+ }
+
+ if (pst != NULL)
+ {
+ /* We have to allocate one psymtab for
+ each program csect, because their text
+ sections need not be adjacent. */
+ xcoff_end_psymtab
+ (pst, psymtab_include_list,
+ includes_used,
+ symnum_before,
+ dependency_list, dependencies_used);
+ includes_used = 0;
+ dependencies_used = 0;
+ /* Give all psymtabs for this source file the same
+ name. */
+ pst = xcoff_start_psymtab
+ (objfile, section_offsets,
+ filestring,
+ symnum_before,
+ objfile->global_psymbols.next,
+ objfile->static_psymbols.next);
+ }
+ }
+ if (namestring && namestring[0] == '.')
+ {
+ last_csect_name = namestring;
+ last_csect_val = symbol.n_value;
+ last_csect_sec =
+ secnum_to_section (symbol.n_scnum, objfile);
+ }
+ if (pst != NULL)
+ {
+ CORE_ADDR highval =
+ symbol.n_value + csect_aux.x_csect.x_scnlen.l;
+ if (highval > pst->texthigh)
+ pst->texthigh = highval;
+ if (pst->textlow == 0 || symbol.n_value < pst->textlow)
+ pst->textlow = symbol.n_value;
+ }
+ misc_func_recorded = 0;
+ break;
+
+ case XMC_RW:
+ /* Data variables are recorded in the minimal symbol
+ table, except for section symbols. */
+ if (*namestring != '.')
+ prim_record_minimal_symbol_and_info
+ (namestring, symbol.n_value,
+ sclass == C_HIDEXT ? mst_file_data : mst_data,
+ NULL, secnum_to_section (symbol.n_scnum, objfile),
+ objfile);
+ break;
+
+ case XMC_TC0:
+ if (toc_offset)
+ warning ("More than one XMC_TC0 symbol found.");
+ toc_offset = symbol.n_value;
+ break;
+
+ case XMC_TC:
+ /* These symbols tell us where the TOC entry for a
+ variable is, not the variable itself. */
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case XTY_LD:
+ switch (csect_aux.x_csect.x_smclas)
+ {
+ case XMC_PR:
+ /* A function entry point. */
+
+ if (first_fun_line_offset == 0 && symbol.n_numaux > 1)
+ first_fun_line_offset =
+ main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr;
+ RECORD_MINIMAL_SYMBOL
+ (namestring, symbol.n_value,
+ sclass == C_HIDEXT ? mst_file_text : mst_text,
+ secnum_to_section (symbol.n_scnum, objfile),
+ objfile);
+ break;
+
+ case XMC_GL:
+ /* shared library function trampoline code entry
+ point. */
+
+ /* record trampoline code entries as
+ mst_solib_trampoline symbol. When we lookup mst
+ symbols, we will choose mst_text over
+ mst_solib_trampoline. */
+ RECORD_MINIMAL_SYMBOL
+ (namestring, symbol.n_value,
+ mst_solib_trampoline,
+ secnum_to_section (symbol.n_scnum, objfile),
+ objfile);
+ break;
+
+ case XMC_DS:
+ /* The symbols often have the same names as
+ debug symbols for functions, and confuse
+ lookup_symbol. */
+ break;
+
+ default:
+
+ /* xlc puts each variable in a separate csect,
+ so we get an XTY_SD for each variable. But
+ gcc puts several variables in a csect, so
+ that each variable only gets an XTY_LD. We
+ still need to record them. This will
+ typically be XMC_RW; I suspect XMC_RO and
+ XMC_BS might be possible too. */
+ if (*namestring != '.')
+ prim_record_minimal_symbol_and_info
+ (namestring, symbol.n_value,
+ sclass == C_HIDEXT ? mst_file_data : mst_data,
+ NULL, secnum_to_section (symbol.n_scnum, objfile),
+ objfile);
+ break;
+ }
+ break;
+
+ case XTY_CM:
+ switch (csect_aux.x_csect.x_smclas)
+ {
+ case XMC_RW:
+ case XMC_BS:
+ /* Common variables are recorded in the minimal symbol
+ table, except for section symbols. */
+ if (*namestring != '.')
+ prim_record_minimal_symbol_and_info
+ (namestring, symbol.n_value,
+ sclass == C_HIDEXT ? mst_file_bss : mst_bss,
+ NULL, secnum_to_section (symbol.n_scnum, objfile),
+ objfile);
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ break;
+ case C_FILE:
+ {
+ unsigned int symnum_before;
+
+ symnum_before = ssymnum;
+ swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol,
+ &ssymnum, objfile);
+
+ /* See if the last csect needs to be recorded. */
+
+ if (last_csect_name && !misc_func_recorded)
+ {
+
+ /* If no misc. function recorded in the last seen csect, enter
+ it as a function. This will take care of functions like
+ strcmp() compiled by xlc. */
+
+ RECORD_MINIMAL_SYMBOL
+ (last_csect_name, last_csect_val,
+ mst_text, last_csect_sec, objfile);
+ }
+
+ if (pst)
+ {
+ xcoff_end_psymtab (pst, psymtab_include_list, includes_used,
+ symnum_before,
+ dependency_list, dependencies_used);
+ includes_used = 0;
+ dependencies_used = 0;
+ }
+ first_fun_line_offset = 0;
+
+ /* XCOFF, according to the AIX 3.2 documentation, puts the
+ filename in cs->c_name. But xlc 1.3.0.2 has decided to
+ do things the standard COFF way and put it in the auxent.
+ We use the auxent if the symbol is ".file" and an auxent
+ exists, otherwise use the symbol itself. */
+ if (!strcmp (namestring, ".file") && symbol.n_numaux > 0)
+ {
+ filestring = coff_getfilename (&main_aux, objfile);
+ }
+ else
+ filestring = namestring;
+
+ pst = xcoff_start_psymtab (objfile, section_offsets,
+ filestring,
+ symnum_before,
+ objfile->global_psymbols.next,
+ objfile->static_psymbols.next);
+ last_csect_name = NULL;
+ }
+ break;
+
+ default:
+ {
+ static struct complaint msg =
+ {"Storage class %d not recognized during scan", 0, 0};
+ complain (&msg, sclass);
+ }
+ /* FALLTHROUGH */
+
+ /* C_FCN is .bf and .ef symbols. I think it is sufficient
+ to handle only the C_FUN and C_EXT. */
+ case C_FCN:
+
+ case C_BSTAT:
+ case C_ESTAT:
+ case C_ARG:
+ case C_REGPARM:
+ case C_REG:
+ case C_TPDEF:
+ case C_STRTAG:
+ case C_UNTAG:
+ case C_ENTAG:
+ case C_LABEL:
+ case C_NULL:
+
+ /* C_EINCL means we are switching back to the main file. But there
+ is no reason to care; the only thing we want to know about
+ includes is the names of all the included (.h) files. */
+ case C_EINCL:
+
+ case C_BLOCK:
+
+ /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be
+ used instead. */
+ case C_STAT:
+
+ /* I don't think the name of the common block (as opposed to the
+ variables within it) is something which is user visible
+ currently. */
+ case C_BCOMM:
+ case C_ECOMM:
+
+ case C_PSYM:
+ case C_RPSYM:
+
+ /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL
+ so C_LSYM would appear to be only for locals. */
+ case C_LSYM:
+
+ case C_AUTO:
+ case C_RSYM:
+ {
+ /* We probably could save a few instructions by assuming that
+ C_LSYM, C_PSYM, etc., never have auxents. */
+ int naux1 =
+ ((struct external_syment *)sraw_symbol)->e_numaux[0] + 1;
+ ssymnum += naux1;
+ sraw_symbol += sizeof (struct external_syment) * naux1;
+ }
+ break;
+
+ case C_BINCL:
+ stype = N_SOL;
+ goto pstab;
+
+ case C_FUN:
+ /* The value of the C_FUN is not the address of the function (it
+ appears to be the address before linking), but as long as it
+ is smaller than the actual address, then find_pc_partial_function
+ will use the minimal symbols instead. I hope. */
+
+ case C_GSYM:
+ case C_ECOML:
+ case C_DECL:
+ case C_STSYM:
+ stype = N_LSYM;
+ pstab:;
+ swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol,
+ &ssymnum, objfile);
+#define CUR_SYMBOL_TYPE stype
+#define CUR_SYMBOL_VALUE symbol.n_value
+
+/* START_PSYMTAB and END_PSYMTAB are never used, because they are only
+ called from DBXREAD_ONLY or N_SO code. Likewise for the symnum
+ variable. */
+#define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms) 0
+#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\
+ do {} while (0)
+/* We have already set the namestring. */
+#define SET_NAMESTRING() /* */
+
+#include "partial-stab.h"
+ }
+ }
+
+ if (pst)
+ {
+ xcoff_end_psymtab (pst, psymtab_include_list, includes_used,
+ ssymnum,
+ dependency_list, dependencies_used);
+ }
+
+ /* Record the toc offset value of this symbol table into ldinfo structure.
+ If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain
+ this information would be file auxiliary header. */
+
+#ifndef FAKING_RS6000
+ xcoff_add_toc_to_loadinfo (toc_offset);
+#endif
}
+/* Scan and build partial symbols for a symbol file.
+ We have been initialized by a call to dbx_symfile_init, which
+ put all the relevant info into a "struct dbx_symfile_info",
+ hung off the objfile structure.
-/* xcoff version of symbol file read. */
+ SECTION_OFFSETS contains offsets relative to which the symbols in the
+ various sections are (depending where the sections were actually loaded).
+ MAINLINE is true if we are reading the main symbol
+ table (as opposed to a shared lib or dynamically loaded file). */
static void
-xcoff_symfile_read (objfile, section_offset, mainline)
- struct objfile *objfile;
- struct section_offset *section_offset;
- int mainline;
+xcoff_initial_scan (objfile, section_offsets, mainline)
+ struct objfile *objfile;
+ struct section_offsets *section_offsets;
+ int mainline; /* FIXME comments above */
{
+ bfd *abfd;
+ int val;
+ struct cleanup *back_to;
int num_symbols; /* # of symbols */
file_ptr symtab_offset; /* symbol table and */
file_ptr stringtab_offset; /* string table file offsets */
- int val;
- bfd *abfd;
struct coff_symfile_info *info;
char *name;
+ unsigned int size;
+
+#ifndef FAKING_RS6000
+ /* Initialize load info structure. */
+ if (mainline)
+ xcoff_init_loadinfo ();
+#endif
info = (struct coff_symfile_info *) objfile -> sym_private;
symfile_bfd = abfd = objfile->obfd;
info->max_lineno_offset = 0;
bfd_map_over_sections (abfd, find_linenos, info);
- /* FIXME! This stuff should move into symfile_init */
- if (info->min_lineno_offset != 0
- && info->max_lineno_offset > info->min_lineno_offset) {
-
- /* only read in the line # table if one exists */
- val = init_lineno(abfd, info->min_lineno_offset,
- (int) (info->max_lineno_offset - info->min_lineno_offset));
-
- if (val < 0)
- error("\"%s\": error reading line numbers\n", name);
- }
+ if (num_symbols > 0)
+ {
+ /* Read the string table. */
+ init_stringtab (abfd, stringtab_offset, objfile);
- val = init_stringtab(abfd, stringtab_offset, objfile);
- if (val < 0) {
- error ("\"%s\": can't get string table", name);
- }
+ /* Read the .debug section, if present. */
+ {
+ sec_ptr secp;
+ bfd_size_type length;
+ char *debugsec = NULL;
- if (init_debugsection(abfd) < 0) {
- error ("Error reading .debug section of `%s'\n", name);
- }
+ secp = bfd_get_section_by_name (abfd, ".debug");
+ if (secp)
+ {
+ length = bfd_section_size (abfd, secp);
+ if (length)
+ {
+ debugsec =
+ (char *) obstack_alloc (&objfile->symbol_obstack, length);
+
+ if (!bfd_get_section_contents (abfd, secp, debugsec,
+ (file_ptr) 0, length))
+ {
+ error ("Error reading .debug section of `%s': %s",
+ name, bfd_errmsg (bfd_get_error ()));
+ }
+ }
+ }
+ ((struct coff_symfile_info *)objfile->sym_private)->debugsec =
+ debugsec;
+ }
+ }
- /* Position to read the symbol table. Do not read it all at once. */
- val = bfd_seek(abfd, symtab_offset, L_SET);
+ /* Read the symbols. We keep them in core because we will want to
+ access them randomly in read_symbol*. */
+ val = bfd_seek (abfd, symtab_offset, SEEK_SET);
if (val < 0)
- perror_with_name(name);
+ error ("Error reading symbols from %s: %s",
+ name, bfd_errmsg (bfd_get_error ()));
+ size = coff_data (abfd)->local_symesz * num_symbols;
+ ((struct coff_symfile_info *)objfile->sym_private)->symtbl =
+ obstack_alloc (&objfile->symbol_obstack, size);
+ ((struct coff_symfile_info *)objfile->sym_private)->symtbl_num_syms =
+ num_symbols;
+
+ val = bfd_read (((struct coff_symfile_info *)objfile->sym_private)->symtbl,
+ size, 1, abfd);
+ if (val != size)
+ perror_with_name ("reading symbol table");
+
+ /* If we are reinitializing, or if we have never loaded syms yet, init */
+ if (mainline
+ || objfile->global_psymbols.size == 0
+ || objfile->static_psymbols.size == 0)
+ /* I'm not sure how how good num_symbols is; the rule of thumb in
+ init_psymbol_list was developed for a.out. On the one hand,
+ num_symbols includes auxents. On the other hand, it doesn't
+ include N_SLINE. */
+ init_psymbol_list (objfile, num_symbols);
- if (bfd_tell(abfd) != symtab_offset)
- fatal("bfd? BFD!");
+ pending_blocks = 0;
+ back_to = make_cleanup (really_free_pendings, 0);
init_minimal_symbol_collection ();
make_cleanup (discard_minimal_symbols, 0);
-#ifndef FAKING_RS6000
- /* Initialize load info structure. */
- if (mainline)
- xcoff_init_loadinfo ();
-#endif
-
- /* Now that the executable file is positioned at symbol table,
- process it and define symbols accordingly. */
-
- read_xcoff_symtab(objfile, num_symbols);
-
- /* Free debug section. */
- free_debugsection ();
+ /* Now that the symbol table data of the executable file are all in core,
+ process them and define symbols accordingly. */
- /* Sort symbols alphabetically within each block. */
- sort_syms ();
+ scan_xcoff_symtab (section_offsets, objfile);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile. */
install_minimal_symbols (objfile);
- /* Make a default for file to list. */
- select_source_symtab (0);
+ do_cleanups (back_to);
}
-
-/* XCOFF-specific parsing routine for section offsets.
- Plain and simple for now. */
-
-static
-struct section_offsets *
+\f
+static struct section_offsets *
xcoff_symfile_offsets (objfile, addr)
struct objfile *objfile;
CORE_ADDR addr;
{
struct section_offsets *section_offsets;
int i;
-
+
+ objfile->num_sections = SECT_OFF_MAX;
section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile -> psymbol_obstack,
- sizeof (struct section_offsets) +
- sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1));
+ obstack_alloc
+ (&objfile -> psymbol_obstack,
+ sizeof (struct section_offsets)
+ + sizeof (section_offsets->offsets) * objfile->num_sections);
+
+ /* syms_from_objfile kindly subtracts from addr the bfd_section_vma
+ of the .text section. This strikes me as wrong--whether the
+ offset to be applied to symbol reading is relative to the start
+ address of the section depends on the symbol format. In any
+ event, this whole "addr" concept is pretty broken (it doesn't
+ handle any section but .text sensibly), so just ignore the addr
+ parameter and use 0. rs6000-nat.c will set the correct section
+ offsets via objfile_relocate. */
+ for (i = 0; i < objfile->num_sections; ++i)
+ ANOFFSET (section_offsets, i) = 0;
- for (i = 0; i < SECT_OFF_MAX; i++)
- ANOFFSET (section_offsets, i) = addr;
-
return section_offsets;
}
-/* Register our ability to parse symbols for xcoff BFD files. */
+
+/* Register our ability to parse symbols for xcoff BFD files. */
static struct sym_fns xcoff_sym_fns =
{
- "aixcoff-rs6000", /* sym_name: name or name prefix of BFD target type */
- 15, /* sym_namelen: number of significant sym_name chars */
+
+ /* Because the bfd uses coff_flavour, we need to specially kludge
+ the flavour. It is possible that coff and xcoff should be merged as
+ they do have fundamental similarities (for example, the extra storage
+ classes used for stabs could presumably be recognized in any COFF file).
+ However, in addition to obvious things like all the csect hair, there are
+ some subtler differences between xcoffread.c and coffread.c, notably
+ the fact that coffread.c has no need to read in all the symbols, but
+ xcoffread.c reads all the symbols and does in fact randomly access them
+ (in C_BSTAT and line number processing). */
+
+ (enum bfd_flavour)-1,
+
xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */
xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */
- xcoff_symfile_read, /* sym_read: read a symbol file into symtab */
+ xcoff_initial_scan, /* sym_read: read a symbol file into symtab */
xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */
xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */
NULL /* next: pointer to next struct sym_fns */
{
add_symtab_fns(&xcoff_sym_fns);
- /* Initialize symbol template later used for arguments. */
- SYMBOL_NAME (&parmsym) = "";
- SYMBOL_INIT_LANGUAGE_SPECIFIC (&parmsym, language_c);
- SYMBOL_NAMESPACE (&parmsym) = VAR_NAMESPACE;
- SYMBOL_CLASS (&parmsym) = LOC_ARG;
- /* Its other fields are zero, or are filled in later. */
+ func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0,
+ "<function, no debug info>", NULL);
+ TYPE_TARGET_TYPE (func_symbol_type) = builtin_type_int;
+ var_symbol_type =
+ init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0,
+ "<variable, no debug info>", NULL);
}
projects / binutils.git / blobdiff