-/* Read AIXcoff symbol tables and convert to internal format, for GDB.
- Copyright (C) 1986-1991 Free Software Foundation, Inc.
+/* Read AIX xcoff symbol tables and convert to internal format, for GDB.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
+ Free Software Foundation, Inc.
Derived from coffread.c, dbxread.c, and a lot of hacking.
Contributed by IBM Corporation.
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#include <stdio.h>
+/* 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. */
+
#include "defs.h"
#include "bfd.h"
-/* AIX COFF names have a preceeding dot `.' */
-#define NAMES_HAVE_DOT 1
-
#include <sys/types.h>
#include <fcntl.h>
#include <ctype.h>
+#include <string.h>
#include "obstack.h"
#include <sys/param.h>
+#ifndef NO_SYS_FILE
#include <sys/file.h>
+#endif
#include <sys/stat.h>
-
-#include "symtab.h"
-#include "symfile.h"
-#include "buildsym.h"
+#include <sys/debug.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 */
-extern char *index();
-
-static void enter_line_range ();
-static struct symbol *process_xcoff_symbol ();
-static int read_symbol_nvalue ();
-static int read_symbol_lineno ();
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include "stabsread.h"
+#include "complaints.h"
+/* For interface with stabsread.c. */
+#include "aout/stab_gnu.h"
/* 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;
};
This is calculated from the first function seen after a C_FILE
symbol. */
-static CORE_ADDR cur_src_start_addr;
+
static CORE_ADDR cur_src_end_addr;
/* Core address of the end of the first object file. */
/* pointer to the a.out symbol table */
static char *symtbl;
+/* Number of symbols in symtbl. */
+static int symtbl_num_syms;
+
/* initial symbol-table-debug-string vector length */
#define INITIAL_STABVECTOR_LENGTH 40
-struct pending_stabs *global_stabs;
-struct pending_stabs *file_stabs;
-
/* Nonzero if within a function (so symbols should be local,
if nothing says specifically). */
static unsigned local_symesz;
-/* coff_symfile_init()
- is the coff-specific initialization routine for reading symbols.
- It is passed a struct sym_fns 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 coff_symfile_read().
-
- We will only be called if this is a COFF or COFF-like file.
- BFD handles figuring out the format of the file, and code in symtab.c
- uses BFD's determination to vector to us.
-
- The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */
-
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};
+
+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 void
+enter_line_range PARAMS ((struct subfile *, unsigned, unsigned,
+ CORE_ADDR, CORE_ADDR, unsigned *));
-/* Call sort_syms to sort alphabetically
- the symbols of each block of each symtab. */
+static void
+free_debugsection PARAMS ((void));
static int
-compare_symbols (s1, s2)
-struct symbol **s1, **s2;
-{
- /* Names that are less should come first. */
- 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));
-}
+init_debugsection PARAMS ((bfd *));
+static int
+init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *));
-/* Sort a vector of symbols by their value. */
+static void
+xcoff_symfile_init PARAMS ((struct objfile *));
static void
-sort_syms ()
-{
- register struct symtab *s;
- register int i, nbl;
- register struct blockvector *bv;
- register struct block *b;
+xcoff_new_init PARAMS ((struct objfile *));
- for (s = symtab_list; s; 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);
- }
- }
-}
+static void
+xcoff_symfile_read PARAMS ((struct objfile *, struct section_offsets *, 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
+free_linetab PARAMS ((void));
+
+static void
+find_linenos PARAMS ((bfd *, sec_ptr, PTR));
+
+static char *
+coff_getfilename PARAMS ((union internal_auxent *));
+
+static void
+read_symbol PARAMS ((struct internal_syment *, int));
+
+static int
+read_symbol_lineno PARAMS ((int));
+
+static 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));
+static void
+add_stab_to_list PARAMS ((char *, struct pending_stabs **));
/* add a given stab string into given stab vector. */
else if ((*stabvector)->count >= (*stabvector)->length) {
(*stabvector)->length += INITIAL_STABVECTOR_LENGTH;
*stabvector = (struct pending_stabs *)
- xrealloc (*stabvector, sizeof (struct pending_stabs) +
+ xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) +
(*stabvector)->length * sizeof (char*));
}
(*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.
+
+ 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. */
+
+/* compare line table entry addresses. */
+static int
+compare_lte (lte1, lte2)
+ struct linetable_entry *lte1, *lte2;
+{
+ return lte1->pc - lte2->pc;
+}
-/* for all the stabs in a given stab vector, build appropriate types
- and fix their symbols in given symbol vector. */
+/* 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. */
-void
-patch_block_stabs (symbols, stabs)
-struct pending *symbols;
-struct pending_stabs *stabs;
+static struct linetable *
+arrange_linetable (oldLineTb)
+ struct linetable *oldLineTb; /* old linetable */
{
- int ii;
+ int ii, jj,
+ newline, /* new line count */
+ function_count; /* # of functions */
- if (!stabs)
- return;
+ struct linetable_entry *fentry; /* function entry vector */
+ int fentry_size; /* # of function entries */
+ struct linetable *newLineTb; /* new line table */
+
+#define NUM_OF_FUNCTIONS 20
- /* for all the stab entries, find their corresponding symbols and
- patch their types! */
+ fentry_size = NUM_OF_FUNCTIONS;
+ fentry = (struct linetable_entry*)
+ xmalloc (fentry_size * sizeof (struct linetable_entry));
- 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 */
+ for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) {
+
+ if (oldLineTb->item[ii].line == 0) { /* function entry found. */
+
+ if (function_count >= fentry_size) { /* make sure you have room. */
+ fentry_size *= 2;
+ fentry = (struct linetable_entry*)
+ xrealloc (fentry, fentry_size * sizeof (struct linetable_entry));
+ }
+ fentry[function_count].line = ii;
+ fentry[function_count].pc = oldLineTb->item[ii].pc;
+ ++function_count;
}
- else {
- pp += 2;
+ }
- if (*(pp-1) == 'F' || *(pp-1) == 'f')
- SYMBOL_TYPE (sym) = lookup_function_type (read_type (&pp));
- else
- SYMBOL_TYPE (sym) = read_type (&pp);
+ if (function_count == 0) {
+ free (fentry);
+ return oldLineTb;
+ }
+ else if (function_count > 1)
+ qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte);
+
+ /* allocate a new line table. */
+ 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. */
+
+ newline = 0;
+ if (oldLineTb->item[0].line != 0)
+ for (newline=0;
+ newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline)
+ newLineTb->item[newline] = oldLineTb->item[newline];
+
+ /* Now copy function lines one by one. */
+
+ for (ii=0; ii < function_count; ++ii) {
+ for (jj = fentry[ii].line + 1;
+ jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0;
+ ++jj, ++newline)
+ newLineTb->item[newline] = oldLineTb->item[jj];
+ }
+ free (fentry);
+ newLineTb->nitems = oldLineTb->nitems - function_count;
+ 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
+ represent if (the include files. */
+
+
+typedef struct _inclTable {
+ char *name; /* include filename */
+
+ /* 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;
+
+#define INITIAL_INCLUDE_TABLE_LENGTH 20
+static InclTable *inclTable; /* global include table */
+static int inclIndx; /* last entry to table */
+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;
+{
+ if (inclDepth)
+ {
+ /* 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_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)
+ {
+ 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;
+
+ --inclDepth;
+ ++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);
+ }
+}
+
+/* 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;
+{
+ char *pp;
+ int offset, ii;
+
+ struct subfile main_subfile; /* subfile structure for the main
+ compilation unit. */
+
+ /* 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 *firstLine;
+ CORE_ADDR addr;
+
+ if (!(offset = first_fun_line_offset))
+ goto return_after_cleanup;
+
+ memset (&main_subfile, '\0', sizeof (main_subfile));
+ first_fun_line_offset = 0;
+
+ 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;
+
+ /* 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 */
+
+ tmpSubfile = inclTable[ii].subfile = (struct subfile*)
+ xmalloc (sizeof (struct subfile));
+
+ 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);
+
+ 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);
+ }
+ }
+
+ /* Process main file's line numbers. */
+ if (main_subfile.line_vector) {
+ struct linetable *lineTb, *lv;
+
+ lv = main_subfile.line_vector;
+
+ /* 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)));
+
+ }
+ else {
+ free (lv);
+ current_subfile->line_vector = lineTb;
+ }
+
+ current_subfile->line_vector_length =
+ current_subfile->line_vector->nitems;
}
+
+ /* Now, process included files' line numbers. */
+
+ for (ii=0; ii < inclIndx; ++ii) {
+
+ if ( (inclTable[ii].subfile)->line_vector) { /* Useless if!!! FIXMEmgo */
+ struct linetable *lineTb, *lv;
+
+ lv = (inclTable[ii].subfile)->line_vector;
+
+ /* Line numbers are not necessarily ordered. xlc compilation will
+ put static function to the end. */
+
+ lineTb = arrange_linetable (lv);
+
+ push_subfile ();
+
+ /* 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. */
+
+/* start_subfile (inclTable[ii].name, (char*)0); */
+ start_subfile (" ?", (char*)0);
+ free (current_subfile->name);
+ current_subfile->name = strdup (inclTable[ii].name);
+
+ 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;
+ }
+
+ current_subfile->line_vector_length =
+ current_subfile->line_vector->nitems;
+ start_subfile (pop_subfile (), (char*)0);
+ }
+ }
+
+return_after_cleanup:
+
+ /* 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. */
+ memset (&main_subfile, '\0', sizeof (struct subfile));
+}
+
+void
+aix_process_linenos ()
+{
+ /* process line numbers and enter them into line vector */
+ process_linenos (last_source_start_addr, cur_src_end_addr);
}
+
/* Enter a given range of lines into the line vector.
can be called in the following two ways:
- enter_line_range (subfile, beginoffset, endoffset, 0, firstLine) or
- enter_line_range (subfile, beginoffset, 0, endaddr, firstLine) */
+ enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or
+ 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, endaddr, firstLine)
- struct subfile *subfile; /* which sub-file to put line#s in */
+enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, firstLine)
+ struct subfile *subfile;
unsigned beginoffset, endoffset; /* offsets to line table */
- CORE_ADDR endaddr;
+ CORE_ADDR startaddr, endaddr;
unsigned *firstLine;
{
char *pp, *limit;
CORE_ADDR addr;
- struct internal_lineno lptr;
- unsigned local_linesz = coff_data (symfile_bfd)->local_linesz;
+
+/* 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];
+ if (endoffset != 0 && endoffset - linetab_offset >= linetab_size)
+ {
+ static struct complaint msg =
+ {"Bad line table offset in C_EINCL directive", 0, 0};
+ complain (&msg);
+ return;
+ }
limit = endoffset ? &linetab [endoffset - linetab_offset]
: &linetab [linetab_size -1];
while (pp <= limit) {
- /* Swap and align this lineno entry into lptr. */
- bfd_coff_swap_lineno_in (symfile_bfd, pp, &lptr);
-
/* find the address this line represents */
- addr = lptr.l_lnno ?
- lptr.l_addr.l_paddr : read_symbol_nvalue (symtbl, lptr.l_addr.l_symndx);
+ addr = P_LINENO(pp) ?
+ P_LINEADDR(pp) : read_symbol_nvalue (P_LINESYM(pp));
- if (endaddr && addr >= endaddr)
+ if (addr < startaddr || (endaddr && addr >= endaddr))
return;
- if (lptr.l_lnno == 0) {
- *firstLine = read_symbol_lineno (symtbl, lptr.l_addr.l_symndx);
+ if (P_LINENO(pp) == 0) {
+ *firstLine = read_symbol_lineno (P_LINESYM(pp));
+ record_line (subfile, 0, addr);
--(*firstLine);
}
else
- record_line (subfile, *firstLine + lptr.l_lnno, addr);
+ 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)
+ bfd *abfd;
+ sec_ptr textsec;
+ struct coff_symbol *cs;
+{
+#define TBTABLE_BUFSIZ 2000
+
+ 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 */
- pp += local_linesz;
+ int functionstart = cs->c_value - textsec->vma;
+
+ memset (&tbInfo, '\0', sizeof (tbInfo));
+
+ /* keep reading blocks of data from the text section, until finding a zero
+ word and a traceback table. */
+
+ /* Note: The logical thing way to write this code would be to assign
+ to bufferbytes within the while condition. But that triggers a
+ compiler (xlc in AIX 3.2) bug, so simplify it... */
+ bufferbytes =
+ (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ?
+ TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread));
+ while (bufferbytes
+ && (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 (tmp == 0x9421) { /* stu r1, NUM(r1) */
+ tbInfo.framesize = 0x10000 - (*pinsn & 0xffff);
+ break;
+ }
+ 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. */
+
+ /* This is how much to read to get the traceback table.
+ 8 bytes of the traceback table are always present, plus we
+ look at parminfo. */
+#define MIN_TBTABSIZ 12
+
+ 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.
+
+ This could happen if the traceback table is only 8 bytes,
+ but we try to read 12 bytes of it.
+ 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_unfiltered ("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;
+ }
+ bufferbytes =
+ (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ?
+ TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread));
+ }
+ 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];
+
+ 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)) {
+
+ /* 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 */
+
+ if (!bfd_get_section_contents (
+ abfd, textsec, buffer,
+ (file_ptr)(functionstart +
+ bytesread - (buffer + bufferbytes - pinsn)),MIN_TBTABSIZ))
+ /* abort (); */ { printf_unfiltered ("abort!!!\n"); return NULL; }
+
+ return (struct tbtable *)buffer;
+ }
+ else
+ return (struct tbtable *)pinsn;
+ }
}
+ return NULL;
}
+#endif /* 0 */
+
+
/* Save the vital information for use when closing off the current file.
#define complete_symtab(name, start_addr) { \
last_source_file = savestring (name, strlen (name)); \
- cur_src_start_addr = start_addr; \
+ last_source_start_addr = start_addr; \
}
/* Reading symbol table has to be fast! Keep the followings as macros, rather
than functions. */
-#define RECORD_MISC_FUNCTION(NAME, ADDR, TYPE, ALLOCED) \
+#define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, ALLOCED, SECTION, OBJFILE) \
{ \
char *namestr; \
if (ALLOCED) \
namestr = (NAME) + 1; \
else { \
- namestr = obstack_copy0 (symbol_obstack, (NAME) + 1, strlen ((NAME)+1)); \
+ (NAME) = namestr = \
+ obstack_copy0 (&objfile->symbol_obstack, (NAME) + 1, strlen ((NAME)+1)); \
(ALLOCED) = 1; \
} \
- prim_record_misc_function (namestr, (ADDR), (TYPE)); \
- last_recorded_fun = (ADDR); \
+ 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. */
-/* aixcoff has static blocks marked in `.bs', `.es' pairs. They cannot be
+#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;
+/* Next symbol to read. Pointer into raw seething symbol table. */
+
+static char *raw_symbol;
+
+/* This is the function which stabsread.c calls to get symbol
+ continuations. */
+static char *
+xcoff_next_symbol_text ()
+{
+ struct internal_syment symbol;
+ static struct complaint msg =
+ {"Unexpected symbol continuation", 0, 0};
+ char *retval;
+
+ bfd_coff_swap_sym_in (current_objfile->obfd, raw_symbol, &symbol);
+ if (symbol.n_zeroes)
+ {
+ complain (&msg);
+
+ /* Return something which points to '\0' and hope the symbol reading
+ code does something reasonable. */
+ retval = "";
+ }
+ else if (symbol.n_sclass & 0x80)
+ {
+ retval = debugsec + symbol.n_offset;
+ raw_symbol += coff_data (current_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 the whole symbol table of a given bfd. */
-void
+static void
read_xcoff_symtab (objfile, nsyms)
struct objfile *objfile; /* Object file we're reading from */
int nsyms; /* # of symbols */
{
bfd *abfd = objfile->obfd;
- /* char *symtbl; */ /* Raw symbol table base */
- 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[1];
- union internal_auxent main_aux[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;
int just_started = 1;
int depth = 0;
+ int toc_offset = 0; /* toc offset value in data section. */
int val;
- int fcn_first_line;
int fcn_last_line;
int fcn_start_addr;
long fcn_line_offset;
size_t size;
+ 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_seen_csect;
- int last_recorded_fun = 0; /* last recorded fun. value */
+
+ char *last_csect_name; /* last seen csect's name and value */
+ CORE_ADDR last_csect_val;
+ int last_csect_sec;
+ int misc_func_recorded; /* true if any misc. function */
+
+ current_objfile = objfile;
/* 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;
local_symesz = coff_data (abfd)->local_symesz;
- last_source_file = 0;
- last_seen_csect = 0;
- last_recorded_fun = 0;
+ 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;
first_object_file_end = 0;
size = coff_data (abfd)->local_symesz * nsyms;
symtbl = xmalloc (size);
+ symtbl_num_syms = nsyms;
val = bfd_read (symtbl, size, 1, abfd);
if (val != size)
raw_symbol = symtbl;
+ textsec = bfd_get_section_by_name (abfd, ".text");
+ if (!textsec) {
+ printf_unfiltered ("Unable to locate text section!\n");
+ }
+
+ next_symbol_text_func = xcoff_next_symbol_text;
+
while (symnum < nsyms) {
QUIT; /* make this command interruptable. */
/* 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 aixcoff will be freed. Thus we can mark symbols with names
+ section of xcoff will be freed. Thus we can mark symbols with names
in string table as `alloced'. */
{
int ii;
bfd_coff_swap_sym_in (abfd, raw_symbol, symbol);
cs->c_symnum = symnum;
- cs->c_nsyms = symbol->n_numaux;
+ 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;
symname_alloced = 1;
}
cs->c_value = symbol->n_value;
- cs->c_sclass = symbol->n_sclass & 0xff;
+ cs->c_sclass = symbol->n_sclass;
cs->c_secnum = symbol->n_scnum;
cs->c_type = (unsigned)symbol->n_type;
if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) {
if (last_source_file)
- end_symtab (cur_src_end_addr, 1, 1, objfile);
+ {
+ end_symtab (cur_src_end_addr, 1, 0, objfile, textsec->target_index);
+ 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 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);
+ 0, cs->c_naux, &main_aux);
goto function_entry_point;
}
- if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) && cs->c_nsyms == 1)
+ if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) && cs->c_naux == 1)
{
/* dealing with a symbol with a csect entry. */
# define CSECT(PP) ((PP)->x_csect)
-# define CSECT_LEN(PP) (CSECT(PP).x_scnlen)
+# 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)
/* Convert the auxent to something we can access. */
bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- main_aux);
+ 0, cs->c_naux, &main_aux);
- switch (CSECT_SMTYP (main_aux)) {
+ switch (CSECT_SMTYP (&main_aux)) {
case XTY_ER :
continue; /* ignore all external references. */
case XTY_SD : /* a section description. */
{
- switch (CSECT_SCLAS (main_aux)) {
+ switch (CSECT_SCLAS (&main_aux)) {
case XMC_PR : /* a `.text' csect. */
{
- /* 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! */
+ /* 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) {
+
+ /* 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, last_csect_sec,
+ objfile);
+ }
+
- if (last_seen_csect) {
complete_symtab (filestring, file_start_addr);
cur_src_end_addr = file_end_addr;
- end_symtab (file_end_addr, 1, 1, objfile);
- start_symtab ((char *)NULL, (char *)NULL, (CORE_ADDR)0);
+ end_symtab (file_end_addr, 1, 0, objfile,
+ textsec->target_index);
+ end_stabs ();
+ start_stabs ();
+ /* Give all csects for this source file the same
+ name. */
+ start_symtab (filestring, (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);
+ first_object_file_end = cs->c_value + CSECT_LEN (&main_aux);
just_started = 0;
}
file_start_addr = cs->c_value;
- file_end_addr = cs->c_value + CSECT_LEN (main_aux);
+ file_end_addr = cs->c_value + CSECT_LEN (&main_aux);
if (cs->c_name && cs->c_name[0] == '.') {
- last_seen_csect = cs->c_name;
- RECORD_MISC_FUNCTION (cs->c_name, cs->c_value, mf_text, symname_alloced);
+ last_csect_name = cs->c_name;
+ last_csect_val = cs->c_value;
+ last_csect_sec = cs->c_secnum;
}
}
+ misc_func_recorded = 0;
continue;
case XMC_RW :
uninitialized data will show up as XTY_CM/XMC_RW pair. */
case XMC_TC0:
-#ifdef XCOFF_ADD_TOC_TO_LOADINFO
- XCOFF_ADD_TOC_TO_LOADINFO (cs->c_value);
-#endif
- /* fall down to default case. */
+ if (toc_offset)
+ warning ("More than one xmc_tc0 symbol found.");
+ toc_offset = cs->c_value;
+ continue;
case XMC_TC : /* ignore toc entries */
default : /* any other XMC_XXX */
break; /* switch CSECT_SCLAS() */
case XTY_LD :
-
- /* a function entry point. */
- if (CSECT_SCLAS (main_aux) == XMC_PR) {
-function_entry_point:
- if (cs->c_value != last_recorded_fun)
- RECORD_MISC_FUNCTION (cs->c_name, cs->c_value, mf_text,
- symname_alloced);
+ switch (CSECT_SCLAS (&main_aux))
+ {
+ case XMC_PR:
+ /* a function entry point. */
+ function_entry_point:
+ RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_text,
+ symname_alloced, cs->c_secnum, objfile);
- fcn_line_offset = main_aux->x_sym.x_fcnary.x_fcn.x_lnnoptr;
+ 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;
+ 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. */
+
+ if (cs->c_naux == 1)
+ ptb = retrieve_tracebackinfo (abfd, textsec, cs);
+
+ else if (cs->c_naux != 2)
+ {
+ static struct complaint msg =
+ {"Expected one or two auxents for function", 0, 0};
+ complain (&msg);
+ }
+
+ /* If there is traceback info, create and add parameters for it. */
+
+ if (ptb && (ptb->fixedparms || ptb->floatparms)) {
+
+ int parmcnt = ptb->fixedparms + ptb->floatparms;
+ char *parmcode = (char*) &ptb->parminfo;
+ int parmvalue = ptb->framesize + 0x18; /* sizeof(LINK AREA) == 0x18 */
+ unsigned int ii, mask;
+
+ for (ii=0, mask = 0x80000000; ii <parmcnt; ++ii) {
+ struct symbol *parm;
+
+ 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);
+ }
continue;
- }
- /* shared library function entry point. */
- else if (CSECT_SCLAS (main_aux) == XMC_GL) {
- if (last_recorded_fun != cs->c_value)
- RECORD_MISC_FUNCTION (cs->c_name, cs->c_value, mf_text,
- symname_alloced);
+ 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 (cs->c_name, cs->c_value,
+ mst_solib_trampoline,
+ symname_alloced, cs->c_secnum, objfile);
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. We still need to record them. This will
+ typically be XMC_RW; I suspect XMC_RO and XMC_BS might
+ be possible too. */
+ break;
}
- break;
default : /* all other XTY_XXXs */
break;
- } /* switch CSECT_SMTYP() */
- }
+ } /* 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, last_csect_sec, objfile);
+ }
+
/* c_value field contains symnum of next .file entry in table
or symnum of first global after last .file. */
/* complete symbol table for last object file containing
debugging information. */
- /* Whether or not there was a csect in the previous file, we have
- to call `end_symtab' and `start_symtab' to reset type_vector,
+ /* 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. */
+
complete_symtab (filestring, file_start_addr);
cur_src_end_addr = file_end_addr;
- end_symtab (file_end_addr, 1, 1, objfile);
- start_symtab (cs->c_name, (char *)NULL, (CORE_ADDR)0);
- last_seen_csect = 0;
+ end_symtab (file_end_addr, 1, 0, objfile, textsec->target_index);
+ end_stabs ();
+
+ /* 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);
+ }
+ else
+ filestring = cs->c_name;
+
+ start_stabs ();
+ start_symtab (filestring, (char *)NULL, (CORE_ADDR)0);
+ last_csect_name = 0;
/* 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;
-
- filestring = cs->c_name;
break;
+ case C_FUN:
+ fcn_stab_saved = *cs;
+ break;
+
+
case C_FCN:
- if (strcmp (cs->c_name, ".bf") == 0) {
+ if (STREQ (cs->c_name, ".bf")) {
bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- main_aux);
+ 0, cs->c_naux, &main_aux);
within_function = 1;
- /* value contains address of first non-init type code */
- /* main_aux.x_sym.x_misc.x_lnsz.x_lnno
- contains line number of '{' } */
- fcn_first_line = main_aux->x_sym.x_misc.x_lnsz.x_lnno;
-
- /* Linenos are now processed on a file-by-file, not fn-by-fn, basis.
- /* mark_first_line (fcn_line_offset, cs->c_symnum); */
+ mark_first_line (fcn_line_offset, cs->c_symnum);
new = push_context (0, fcn_start_addr);
- new->name = process_xcoff_symbol (&fcn_cs_saved);
+
+ new->name = define_symbol
+ (fcn_cs_saved.c_value, fcn_stab_saved.c_name, 0, 0, objfile);
+ if (new->name != NULL)
+ SYMBOL_SECTION (new->name) = cs->c_secnum;
}
- else if (strcmp (cs->c_name, ".ef") == 0) {
+ else if (STREQ (cs->c_name, ".ef")) {
bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- main_aux);
+ 0, cs->c_naux, &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;
-#if 0
- enter_linenos (fcn_line_offset, fcn_first_line,
- fcn_first_line + fcn_last_line);
-#endif
-
+ 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.",
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);
+ 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);
+ {
+ struct internal_syment symbol;
+
+ read_symbol (&symbol, cs->c_value);
+ static_block_base = symbol.n_value;
+ static_block_section = symbol.n_scnum;
+ }
break;
case C_ESTAT : /* end of static block */
static_block_base = 0;
+ static_block_section = -1;
break;
case C_ARG : /* These are not implemented. */
case C_STRTAG :
case C_UNTAG :
case C_ENTAG :
- printf ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass);
+ printf_unfiltered ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass);
break;
case C_HIDEXT : /* ignore these.. */
break;
case C_BINCL : /* beginning of include file */
- push_subfile ();
- start_subfile (cs->c_name, (char *)0);
- fcn_first_line = cs->c_value; /* Offset to first lineno of 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 */
- fcn_last_line = cs->c_value; /* Offset to last line number */
- { long dummy = 0;
- enter_line_range (current_subfile, fcn_first_line, cs->c_value, 0,
- &dummy);
- }
- start_subfile (pop_subfile (), (char *)0);
+ /* see the comment after case C_BINCL. */
+ record_include_end (cs);
break;
case C_BLOCK :
- if (strcmp (cs->c_name, ".bb") == 0) {
+ if (STREQ (cs->c_name, ".bb")) {
depth++;
new = push_context (depth, cs->c_value);
}
- else if (strcmp (cs->c_name, ".eb") == 0) {
+ 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.",
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);
+ new->start_addr, cs->c_value, objfile);
}
local_symbols = new->locals;
}
break;
default :
- (void) process_xcoff_symbol (cs);
+ process_xcoff_symbol (cs, objfile);
break;
}
} /* while */
if (last_source_file)
- end_symtab (cur_src_end_addr, 1, 1, objfile);
+ {
+ end_symtab (cur_src_end_addr, 1, 0, objfile, textsec->target_index);
+ 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) \
(SYMBOL2) = (struct symbol *) \
- obstack_alloc (symbol_obstack, sizeof (struct symbol)); \
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \
*(SYMBOL2) = *(SYMBOL1);
#define SYMNAME_ALLOC(NAME, ALLOCED) \
- (ALLOCED) ? (NAME) : obstack_copy0 (symbol_obstack, (NAME), strlen (NAME));
-
+ (ALLOCED) ? (NAME) : obstack_copy0 (&objfile->symbol_obstack, (NAME), strlen (NAME));
/* process one xcoff symbol. */
static struct symbol *
-process_xcoff_symbol (cs)
+process_xcoff_symbol (cs, objfile)
register struct coff_symbol *cs;
+ struct objfile *objfile;
{
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;
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_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_SECTION (sym) = cs->c_secnum;
if (ISFCN (cs->c_type)) {
on in patch_block_stabs () */
SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
- SYMBOL_TYPE (sym) = lookup_function_type (builtin_type_int);
+ SYMBOL_TYPE (sym) = lookup_function_type (lookup_fundamental_type (objfile, FT_INTEGER));
SYMBOL_CLASS (sym) = LOC_BLOCK;
SYMBOL_DUP (sym, sym2);
else {
/* in case we can't figure out the type, default is `int'. */
- SYMBOL_TYPE (sym) = builtin_type_int;
+ SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, FT_INTEGER);
switch (cs->c_sclass)
{
+#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;
-
- case C_DECL: /* a type decleration?? */
- qq = (char*) index (name, ':');
- if (!qq) /* skip if there is no ':' */
- return NULL;
-
- pp = qq + 2;
- ttype = SYMBOL_TYPE (sym) = read_type (&pp);
-
- /* 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. */
-
- if (!ttype || name == qq)
- return NULL;
-
- if (qq[1] == 'T')
- SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
- else if (qq[1] == 't')
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- else {
- printf ("ERROR: Unrecognized stab string.\n");
- return NULL;
- }
-
- SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAME (sym) = obsavestring (name, qq-name);
-
- if (SYMBOL_NAMESPACE (sym) == 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);
-
- else if (!TYPE_NAME (ttype)) /* else, regular typedef. */
- TYPE_NAME (ttype) = SYMBOL_NAME (sym);
-
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list
- (sym2, within_function ? &local_symbols : &file_symbols);
- break;
+#endif
case C_GSYM:
add_stab_to_list (name, &global_stabs);
break;
+ case C_BCOMM:
+ common_block_start (cs->c_name, objfile);
+ break;
+
+ case C_ECOMM:
+ common_block_end (objfile);
+ break;
+
+ default:
+ complain (&storclass_complaint, cs->c_sclass);
+ /* FALLTHROUGH */
+
+ case C_DECL:
case C_PSYM:
- if (*name == ':' || (pp = (char *) index (name, ':')) == NULL)
- return NULL;
- SYMBOL_NAME (sym) = obsavestring (name, pp-name);
- SYMBOL_CLASS (sym) = LOC_ARG;
- pp += 2;
- SYMBOL_TYPE (sym) = read_type (&pp);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
+ case C_RPSYM:
+ case C_ECOML:
+
+ sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile);
+ if (sym != NULL)
+ {
+ SYMBOL_SECTION (sym) = cs->c_secnum;
+ }
+ return sym;
case C_STSYM:
- if (*name == ':' || (pp = (char *) index (name, ':')) == NULL)
- return NULL;
- SYMBOL_NAME (sym) = obsavestring (name, pp-name);
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_VALUE (sym) += static_block_base;
- pp += 2;
- SYMBOL_TYPE (sym) = read_type (&pp);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list
- (sym2, within_function ? &local_symbols : &file_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. */
+
+ if (*name == ':' || (pp = (char *) strchr(name, ':')) == NULL)
+ return NULL;
+
+ ++pp;
+ if (*pp == 'V' && !within_function)
+ *pp = 'S';
+ sym = define_symbol (cs->c_value, 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_LSYM:
- if (*name == ':' || (pp = (char *) index (name, ':')) == NULL)
- return NULL;
- SYMBOL_NAME (sym) = obsavestring (name, pp-name);
- SYMBOL_CLASS (sym) = LOC_LOCAL;
- pp += 1;
- SYMBOL_TYPE (sym) = read_type (&pp);
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
+ sym = define_symbol (cs->c_value, cs->c_name, 0, N_LSYM, objfile);
+ if (sym != NULL)
+ {
+ SYMBOL_SECTION (sym) = cs->c_secnum;
+ }
+ return sym;
case C_AUTO:
SYMBOL_CLASS (sym) = LOC_LOCAL;
SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_SECTION (sym) = cs->c_secnum;
SYMBOL_DUP (sym, sym2);
add_symbol_to_list (sym2, &local_symbols);
break;
case C_EXT:
SYMBOL_CLASS (sym) = LOC_STATIC;
SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_SECTION (sym) = cs->c_secnum;
SYMBOL_DUP (sym, sym2);
add_symbol_to_list (sym2, &global_symbols);
break;
case C_STAT:
SYMBOL_CLASS (sym) = LOC_STATIC;
SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_SECTION (sym) = cs->c_secnum;
SYMBOL_DUP (sym, sym2);
add_symbol_to_list
(sym2, within_function ? &local_symbols : &file_symbols);
break;
case C_REG:
- printf ("ERROR! C_REG is not fully implemented!\n");
+ printf_unfiltered ("ERROR! C_REG is not fully implemented!\n");
SYMBOL_CLASS (sym) = LOC_REGISTER;
SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_SECTION (sym) = cs->c_secnum;
SYMBOL_DUP (sym, sym2);
add_symbol_to_list (sym2, &local_symbols);
break;
case C_RSYM:
- pp = (char*) index (name, ':');
- SYMBOL_CLASS (sym) = LOC_REGISTER;
- SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (cs->c_value);
+ pp = (char*) strchr (name, ':');
if (pp) {
- SYMBOL_NAME (sym) = obsavestring (name, pp-name);
- pp += 2;
- if (*pp)
- SYMBOL_TYPE (sym) = read_type (&pp);
+ sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile);
+ if (sym != NULL)
+ SYMBOL_SECTION (sym) = cs->c_secnum;
+ return sym;
}
- else
- /* else this is not a stab entry, suppose the type is either
- `int' or `float', depending on the register class. */
+ else {
+ complain (&rsym_complaint, name);
+ return NULL;
+ }
+ }
+ }
+ return sym2;
+}
- SYMBOL_TYPE (sym) = (SYMBOL_VALUE (sym) < 32) ?
- builtin_type_int : builtin_type_float;
+/* 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. */
- SYMBOL_DUP (sym, sym2);
- add_symbol_to_list (sym2, &local_symbols);
- break;
+static char *
+coff_getfilename (aux_entry)
+ union internal_auxent *aux_entry;
+{
+ static char buffer[BUFSIZ];
+ register char *temp;
+ char *result;
- default :
- printf ("ERROR: Unexpected storage class: %d.\n", cs->c_sclass);
- return NULL;
+ if (aux_entry->x_file.x_n.x_zeroes == 0)
+ strcpy (buffer, 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;
+{
+ if (symno < 0 || symno >= symtbl_num_syms)
+ {
+ 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 (symfile_bfd, symtbl + (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;
+read_symbol_lineno (symno)
int symno;
{
struct internal_syment symbol[1];
union internal_auxent main_aux[1];
- int ii;
+ /* Note that just searching for a short distance (e.g. 50 symbols)
+ is not enough, at least in the following case.
- for (ii = 0; ii < 50; ii++) {
+ .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. */
+ while (symno < symtbl_num_syms) {
bfd_coff_swap_sym_in (symfile_bfd,
- symtable + (symno*local_symesz), symbol);
- if (symbol->n_sclass == C_FCN && 0 == strcmp (symbol->n_name, ".bf"))
+ symtbl + (symno*local_symesz), symbol);
+ if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf"))
goto gotit;
symno += symbol->n_numaux+1;
}
- printf ("GDB Error: `.bf' not found.\n");
+ 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 (symfile_bfd, symtbl+(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;
}
find_linenos(abfd, asect, vpinfo)
bfd *abfd;
sec_ptr asect;
-void *vpinfo;
+PTR vpinfo;
{
struct coff_symfile_info *info;
int size, count;
count = asect->lineno_count;
- if (count == 0)
+ if (!STREQ (asect->name, ".text") || count == 0)
return;
size = count * coff_data (symfile_bfd)->local_linesz;
static int
init_lineno (abfd, offset, size)
bfd *abfd;
- long offset;
+ file_ptr offset;
int size;
{
int val;
- if (bfd_seek(abfd, offset, 0) < 0)
+ free_linetab ();
+
+ if (bfd_seek(abfd, offset, L_SET) < 0)
return -1;
linetab = (char *) xmalloc(size);
linetab_offset = offset;
linetab_size = size;
- make_cleanup(free, linetab); /* Be sure it gets de-allocated. */
return 0;
}
-
-void
-dump_strtbl ()
-{
- int ii;
- printf ("===STRING TABLE DUMP...\n\n");
- for ( ii=0; ii < strtbl_len; ++ii )
- printf ("%c", isprint (*(strtbl+ii)) ? *(strtbl+ii) : ' ');
- printf ("\n");
-}
-
-void
-dump_linetable (ltb)
- struct linetable *ltb;
-{
- int ii;
- for (ii=0; ii < ltb->nitems; ++ii)
- printf ("line: %d, addr: 0x%x\n", ltb->item[ii].line, ltb->item[ii].pc);
-}
-
-void
-dump_type (typeP)
- struct type *typeP;
+static void
+free_linetab ()
{
- printf ("0x%x: name: %s\n", typeP, typeP->name ? typeP->name : "(nil)");
+ if (linetab)
+ free (linetab);
+ linetab = NULL;
}
-
-char *dump_namespace ();
-char *dump_addrclass ();
-
-void
-dump_symbol (pp)
- struct symbol *pp;
+\f
+static void
+xcoff_new_init (objfile)
+ struct objfile *objfile;
{
- printf (" sym: %s\t%s,\t%s\ttype: 0x%x, val: 0x%x end: 0x%x\n",
- pp->name, dump_namespace (pp->namespace),
- dump_addrclass (pp->class), pp->type,
- SYMBOL_CLASS(pp) == LOC_BLOCK ? BLOCK_START(SYMBOL_BLOCK_VALUE(pp))
- : pp->value.value,
- SYMBOL_CLASS(pp) == LOC_BLOCK ? BLOCK_END(SYMBOL_BLOCK_VALUE(pp)) : 0);
}
-char *
-dump_namespace (ns)
-int ns;
-{
- static char *ns_name [] = {
- "UNDEF_NS", "VAR_NS", "STRUCT_NS", "LABEL_NS"};
-
- switch (ns) {
- case UNDEF_NAMESPACE:
- case VAR_NAMESPACE:
- case STRUCT_NAMESPACE:
- case LABEL_NAMESPACE:
- return ns_name[ns];
- }
+/* 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().
- return "***ERROR***";
-}
-
-
-char *
-dump_addrclass (ac)
-int ac; /* address class */
-{
- static char *ac_name [] = {
- "LOC_UNDEF",
- "LOC_CONST",
- "LOC_STATIC",
- "LOC_REGISTER",
- "LOC_ARG",
- "LOC_REF_ARG",
- "LOC_REGPARM",
- "LOC_LOCAL",
- "LOC_TYPEDEF",
- "LOC_LABEL",
- "LOC_BLOCK",
- "LOC_CONST_BYTES",
- "LOC_LOCAL_ARG",
- };
- switch (ac) {
- case LOC_UNDEF:
- case LOC_CONST:
- case LOC_STATIC:
- case LOC_REGISTER:
- case LOC_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_LOCAL:
- case LOC_TYPEDEF:
- case LOC_LABEL:
- case LOC_BLOCK:
- case LOC_CONST_BYTES:
- case LOC_LOCAL_ARG:
- return ac_name [ac];
- }
- return "***ERROR***";
-}
+ 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). */
-void
-dump_block (pp)
- struct block *pp;
+static void
+xcoff_symfile_init (objfile)
+ struct objfile *objfile;
{
- int ii;
- printf ("BLOCK..: start: 0x%x, end: 0x%x\n", pp->startaddr, pp->endaddr);
- for (ii=0; ii < pp->nsyms; ++ii)
- dump_symbol (pp->sym[ii]);
-}
+ bfd *abfd = objfile->obfd;
-void
-dump_blockvector (pp)
- struct blockvector *pp;
-{
- int ii;
- for (ii=0; ii < pp->nblocks; ++ii)
- dump_block (pp->block [ii]);
+ /* Allocate struct to keep track of the symfile */
+ objfile -> sym_private = xmmalloc (objfile -> md,
+ sizeof (struct coff_symfile_info));
+ init_entry_point_info (objfile);
}
+/* Perform any local cleanups required when we are done with a particular
+ objfile. I.E, we are in the process of discarding all symbol information
+ for an objfile, freeing up all memory held for it, and unlinking the
+ objfile struct from the global list of known objfiles. */
-void
-dump_last_symtab (pp)
- struct symtab *pp;
+static void
+xcoff_symfile_finish (objfile)
+ struct objfile *objfile;
{
- for ( ; pp; pp = pp->next) {
- if ( pp->next == 0 ) {
- printf ("SYMTAB NAME: %s\n", pp->filename);
- dump_blockvector (pp->blockvector);
+ if (objfile -> sym_private != NULL)
+ {
+ mfree (objfile -> md, objfile -> sym_private);
}
- }
-}
-void
-dump_symtabs (pp)
- struct symtab *pp;
-{
- for ( ; pp; pp = pp->next) {
- printf ("SYMTAB NAME: %s\n", pp->filename ? pp->filename : "(nil)");
-/* if (pp->linetable)
- dump_linetable (pp->linetable); */
- dump_blockvector (pp->blockvector);
- }
-}
+ /* Start with a fresh include table for the next objfile. */
-void
-dump_symtab_lines (pp)
- struct symtab *pp;
-{
- for ( ; pp; pp = pp->next) {
- printf ("SYMTAB NAME: %s\n", pp->filename ? pp->filename : "(nil)");
- if (pp->linetable)
- dump_linetable (pp->linetable);
- /* dump_blockvector (pp->blockvector); */
- }
-}
-
-void
-dump_misc_funcs ()
-{
- int ii;
- for (ii=0; ii < misc_function_count; ++ii)
- printf ("name: %s, addr: 0x%x\n",
- misc_function_vector[ii].name,
- misc_function_vector[ii].address);
-}
-
-
-/* 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 aixcoff. */
-
-#undef next_symbol_text
-#define next_symbol_text() \
- printf ("Gdb Error: symbol names on multiple lines not implemented.\n")
-
-
-/* xlc/dbx combination uses a set of builtin types, starting from -1. return
- the proper type node fora given builtin type #. */
-
-struct type *
-builtin_type (pp)
-char **pp;
-{
- int typenums[2];
-
- if (**pp != '-') {
- printf ("ERROR!, unknown built-in type!\n");
- return NULL;
- }
- *pp += 1;
- read_type_number (pp, typenums);
-
- /* default types are defined in dbxstclass.h. */
- switch ( typenums[1] ) {
- case 1:
- return builtin_type_int;
- case 2:
- return builtin_type_char;
- case 3:
- return builtin_type_short;
- case 4:
- return builtin_type_long;
- case 5:
- return builtin_type_unsigned_char;
- case 6:
- return builtin_type_char; /* requires a builtin `signed char' */
- case 7:
- return builtin_type_unsigned_short;
- case 8:
- return builtin_type_unsigned_int;
- case 9:
- return builtin_type_unsigned_int;
- case 10:
- return builtin_type_unsigned_long;
- case 11:
- return builtin_type_void;
- case 12:
- return builtin_type_float;
- case 13:
- return builtin_type_double;
- case 14:
- return builtin_type_double; /* requires a builtin `long double' */
- case 15:
- return builtin_type_int; /* requires a builtin `integer' */
- case 16:
- return builtin_type_int; /* requires builtin `boolean' */
- case 17:
- return builtin_type_float; /* requires builtin `short real' */
- case 18:
- return builtin_type_float; /* requires builtin `real' */
- default :
- printf ("ERROR! Unknown builtin type -%d\n", typenums[1]);
- return NULL;
- }
-}
-
-/* if we now nothing about a function but its address, make a function symbol
- out of it with the limited knowladge you have. This will be used when
- somebody refers to a function, which doesn't exist in the symbol table,
- but in misc_function_vector. */
-
-struct symbol *
-build_function_symbol (ind)
- int ind;
-{
- struct symbol *sym =
- (struct symbol *) obstack_alloc (symbol_obstack, sizeof (struct symbol));
- SYMBOL_NAME (sym) = misc_function_vector[ind].name;
- /* SYMBOL_VALUE (sym) = misc_function_vector[ind].address; */
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- SYMBOL_CLASS (sym) = LOC_BLOCK;
- SYMBOL_TYPE (sym) = lookup_function_type (builtin_type_int);
- SYMBOL_BLOCK_VALUE (sym) = (struct block *)
- obstack_alloc (symbol_obstack, sizeof (struct block));
- BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) = misc_function_vector[ind].address;
- return sym;
-}
-
-
-void
-aixcoff_new_init ()
-{
- /* Nothin' to do. */
-}
-
-void
-aixcoff_symfile_init (sf)
-struct sym_fns *sf;
-{
- bfd *abfd = sf->sym_bfd;
-
- /* Allocate struct to keep track of the symfile */
- /* FIXME memory leak */
- sf->sym_private = xmalloc(sizeof (struct coff_symfile_info));
-
- /*
- * Save startup file's range of PC addresses to help
- * blockframe.c decide where the bottom of the stack is.
- */
- if (bfd_get_file_flags(abfd) & EXEC_P) {
- entry_point = bfd_get_start_address(abfd);
- } else {
- entry_point = ~0;
- /* set the startup file to be an empty range. */
- startup_file_start = 0;
- startup_file_end = 0;
- }
+ if (inclTable)
+ {
+ free (inclTable);
+ inclTable = NULL;
+ }
+ inclIndx = inclLength = inclDepth = 0;
}
static int
-init_stringtab(abfd, offset)
+init_stringtab(abfd, offset, objfile)
bfd *abfd;
- long offset;
+ file_ptr offset;
+ struct objfile *objfile;
{
long length;
int val;
unsigned char lengthbuf[4];
- if (bfd_seek(abfd, offset, 0) < 0)
+ if (bfd_seek(abfd, offset, L_SET) < 0)
return -1;
val = bfd_read((char *)lengthbuf, 1, sizeof lengthbuf, abfd);
/* Allocate string table from symbol_obstack. We will need this table
as long as we have its symbol table around. */
- strtbl = (char*) obstack_alloc (symbol_obstack, length);
+ strtbl = (char*) obstack_alloc (&objfile->symbol_obstack, length);
if (strtbl == NULL)
return -1;
- bcopy(&length, strtbl, sizeof length);
+ memcpy(strtbl, &length, sizeof length);
if (length == sizeof length)
return 0;
if (!(length = bfd_section_size(abfd, secp)))
return 0;
- debugsec = (void *) xmalloc ((unsigned)length);
+ debugsec = (char *) xmalloc ((unsigned)length);
if (debugsec == NULL)
return -1;
if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) {
- printf ("Can't read .debug section from symbol file\n");
+ printf_unfiltered ("Can't read .debug section from symbol file\n");
return -1;
}
return 0;
}
-/* aixcoff version of symbol file read. */
+/* xcoff version of symbol file read. */
-void
-aixcoff_symfile_read (sf, addr, mainline)
- struct sym_fns *sf;
- CORE_ADDR addr;
+static void
+xcoff_symfile_read (objfile, section_offset, mainline)
+ struct objfile *objfile;
+ struct section_offsets *section_offset;
int mainline;
{
- int num_symbols; /* # of symbols */
- int symtab_offset; /* symbol table and */
- int stringtab_offset; /* string table file offsets */
+ 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 = (void*) sf->sym_private;
+ struct coff_symfile_info *info;
char *name;
+ struct cleanup *back_to = make_cleanup (null_cleanup, 0);
- symfile_bfd = abfd = sf->objfile->obfd;
- name = sf->objfile->name;
+ info = (struct coff_symfile_info *) objfile -> sym_private;
+ symfile_bfd = abfd = objfile->obfd;
+ name = objfile->name;
num_symbols = bfd_get_symcount (abfd); /* # of symbols */
symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */
&& info->max_lineno_offset > info->min_lineno_offset) {
/* only read in the line # table if one exists */
+ make_cleanup (free_linetab, 0);
val = init_lineno(abfd, info->min_lineno_offset,
- info->max_lineno_offset - info->min_lineno_offset);
+ (int) (info->max_lineno_offset - info->min_lineno_offset));
if (val < 0)
error("\"%s\": error reading line numbers\n", name);
}
- val = init_stringtab(abfd, stringtab_offset);
- if (val < 0) {
- error ("\"%s\": can't get string table", name);
- }
+ if (num_symbols > 0)
+ {
+ val = init_stringtab(abfd, stringtab_offset, objfile);
+ if (val < 0) {
+ error ("\"%s\": can't get string table", name);
+ }
- if (init_debugsection(abfd) < 0) {
- error ("Error reading .debug section of `%s'\n", name);
- }
+ if (init_debugsection(abfd) < 0) {
+ error ("Error reading .debug section of `%s'\n", name);
+ }
+ }
/* Position to read the symbol table. Do not read it all at once. */
- val = bfd_seek(abfd, (long)symtab_offset, 0);
+ val = bfd_seek(abfd, symtab_offset, L_SET);
if (val < 0)
perror_with_name(name);
if (bfd_tell(abfd) != symtab_offset)
fatal("bfd? BFD!");
- init_misc_bunches ();
- make_cleanup(discard_misc_bunches, 0);
+ init_minimal_symbol_collection ();
+ make_cleanup (discard_minimal_symbols, 0);
-#ifdef XCOFF_INIT_LOADINFO
+#ifndef FAKING_RS6000
+ /* Initialize load info structure. */
if (mainline)
- XCOFF_INIT_LOADINFO ();
+ xcoff_init_loadinfo ();
#endif
/* Now that the executable file is positioned at symbol table,
process it and define symbols accordingly. */
- read_xcoff_symtab(sf->objfile, num_symbols);
+ read_xcoff_symtab(objfile, num_symbols);
- make_cleanup(free_debugsection, 0);
+ /* Free debug section. */
+ free_debugsection ();
/* Sort symbols alphabetically within each block. */
- sort_syms ();
+ {
+ struct symtab *s;
+ for (s = objfile -> symtabs; s != NULL; s = s -> next)
+ {
+ sort_symtab_syms (s);
+ }
+ }
- /* Go over the misc functions and install them in vector. */
- condense_misc_bunches (!mainline);
+ /* Install any minimal symbols that have been collected as the current
+ minimal symbols for this objfile. */
- /* Make a default for file to list. */
- select_source_symtab (0);
+ install_minimal_symbols (objfile);
+
+ do_cleanups (back_to);
}
-/* Register our ability to parse symbols for aixcoff BFD files. */
+/* XCOFF-specific parsing routine for section offsets. */
+
+static int largest_section;
+
+static void
+note_one_section (abfd, asect, ptr)
+ bfd *abfd;
+ asection *asect;
+ PTR ptr;
+{
+ if (asect->target_index > largest_section)
+ largest_section = asect->target_index;
+}
-static struct sym_fns aixcoff_sym_fns =
+static
+struct section_offsets *
+xcoff_symfile_offsets (objfile, addr)
+ struct objfile *objfile;
+ CORE_ADDR addr;
{
- "aixcoff-rs6000", 15,
- aixcoff_new_init, aixcoff_symfile_init,
- aixcoff_symfile_read,
+ struct section_offsets *section_offsets;
+ int i;
+
+ largest_section = 0;
+ bfd_map_over_sections (objfile->obfd, note_one_section, NULL);
+ objfile->num_sections = largest_section + 1;
+ section_offsets = (struct section_offsets *)
+ 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. That matches the fact that xcoff_symfile_read
+ ignores the section_offsets). */
+ for (i = 0; i < objfile->num_sections; i++)
+ ANOFFSET (section_offsets, i) = 0;
+
+ return section_offsets;
+}
+
+/* Register our ability to parse symbols for xcoff BFD files. */
+
+static struct sym_fns xcoff_sym_fns =
+{
+
+ /* Because the bfd uses coff_flavour, we need to specially kludge
+ the flavour. FIXME: coff and xcoff and fundamentally similar
+ except for debug format, and we should see if we can merge this
+ file with coffread.c. For example, the extra storage classes
+ used for stabs could presumably be recognized in any COFF file. */
+
+ (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_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 */
};
void
_initialize_xcoffread ()
{
- add_symtab_fns(&aixcoff_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. */
}
projects / binutils.git / blobdiff