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- /* 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.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* 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"
-
- #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 <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 */
-
- #include "symtab.h"
- #include "gdbtypes.h"
- #include "symfile.h"
- #include "objfiles.h"
- #include "buildsym.h"
- #include "stabsread.h"
- #include "complaints.h"
-
- #include "gdb-stabs.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_naux; /* 0 if syment only, 1 if syment + auxent */
- long c_value;
- 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 bfd *symfile_bfd;
-
- /* Core address of start and end of text of current source file.
- This is calculated from the first function seen after a C_FILE
- symbol. */
-
-
- static CORE_ADDR cur_src_end_addr;
-
- /* Core address of the end of the first object file. */
-
- 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;
-
- /* Number of symbols in symtbl. */
- static int symtbl_num_syms;
-
- /* initial symbol-table-debug-string vector length */
-
- #define INITIAL_STABVECTOR_LENGTH 40
-
- /* Nonzero if within a function (so symbols should be local,
- if nothing says specifically). */
-
- 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.) */
-
- 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};
-
- 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 *));
-
- static void
- free_debugsection PARAMS ((void));
-
- static int
- init_debugsection PARAMS ((bfd *));
-
- static int
- init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *));
-
- static void
- xcoff_symfile_init PARAMS ((struct objfile *));
-
- static void
- xcoff_new_init PARAMS ((struct objfile *));
-
- 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 **));
-
-
- #ifdef STATIC_NODEBUG_VARS
- /* Return the section_offsets* that CS points to. */
- static int cs_to_section PARAMS ((struct coff_symbol *, struct objfile *));
-
- struct find_targ_sec_arg {
- int targ_index;
- int *resultp;
- };
-
- static void find_targ_sec PARAMS ((bfd *, asection *, void *));
-
- static void find_targ_sec (abfd, sect, obj)
- bfd *abfd;
- asection *sect;
- PTR obj;
- {
- struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj;
- if (sect->target_index == args->targ_index)
- {
- /* 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
- cs_to_section (cs, objfile)
- struct coff_symbol *cs;
- struct objfile *objfile;
- {
- int off = SECT_OFF_TEXT;
- struct find_targ_sec_arg args;
- args.targ_index = cs->c_secnum;
- args.resultp = &off;
- bfd_map_over_sections (objfile->obfd, find_targ_sec, &args);
- return off;
- }
- #endif /* STATIC_NODEBUG_VARS */
-
- /* add a given stab string into given stab vector. */
-
- static void
- add_stab_to_list (stabname, stabvector)
- char *stabname;
- struct pending_stabs **stabvector;
- {
- if ( *stabvector == NULL) {
- *stabvector = (struct pending_stabs *)
- xmalloc (sizeof (struct pending_stabs) +
- INITIAL_STABVECTOR_LENGTH * sizeof (char*));
- (*stabvector)->count = 0;
- (*stabvector)->length = INITIAL_STABVECTOR_LENGTH;
- }
- else if ((*stabvector)->count >= (*stabvector)->length) {
- (*stabvector)->length += INITIAL_STABVECTOR_LENGTH;
- *stabvector = (struct pending_stabs *)
- xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) +
- (*stabvector)->length * sizeof (char*));
- }
- (*stabvector)->stab [(*stabvector)->count++] = stabname;
- }
-
- /* 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;
- }
-
- /* 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 */
- {
- int ii, jj,
- newline, /* new line count */
- function_count; /* # of functions */
-
- struct linetable_entry *fentry; /* function entry vector */
- int fentry_size; /* # of function entries */
- struct linetable *newLineTb; /* new line table */
-
- #define NUM_OF_FUNCTIONS 20
-
- fentry_size = NUM_OF_FUNCTIONS;
- fentry = (struct linetable_entry*)
- xmalloc (fentry_size * sizeof (struct linetable_entry));
-
- 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;
- }
- }
-
- 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, 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, 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];
- 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) {
-
- /* find the address this line represents */
- addr = P_LINENO(pp) ?
- P_LINEADDR(pp) : read_symbol_nvalue (P_LINESYM(pp));
-
- if (addr < startaddr || (endaddr && addr >= endaddr))
- return;
-
- if (P_LINENO(pp) == 0) {
- *firstLine = read_symbol_lineno (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)
- 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 */
-
- 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.
- NAME is the file name the symbols came from, START_ADDR is the first
- text address for the file, and SIZE is the number of bytes of text. */
-
- #define complete_symtab(name, start_addr) { \
- last_source_file = savestring (name, strlen (name)); \
- last_source_start_addr = start_addr; \
- }
-
-
- /* Refill the symbol table input buffer
- and set the variables that control fetching entries from it.
- Reports an error if no data available.
- This function can read past the end of the symbol table
- (into the string table) but this does no harm. */
-
- /* Reading symbol table has to be fast! Keep the followings as macros, rather
- than functions. */
-
- #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, ALLOCED, SECTION, OBJFILE) \
- { \
- char *namestr; \
- namestr = (NAME); \
- if (namestr[0] == '.') ++namestr; \
- if (!(ALLOCED)) { \
- (NAME) = namestr = \
- obstack_copy0 (&objfile->symbol_obstack, namestr, strlen (namestr)); \
- (ALLOCED) = 1; \
- } \
- 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;
-
- /* 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. */
-
- 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 *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;
- 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_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_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 = 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;
-
- /* 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);
- symtbl_num_syms = nsyms;
-
- val = bfd_read (symtbl, size, 1, abfd);
- if (val != size)
- perror_with_name ("reading symbol table");
-
- 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 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_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;
-
- raw_symbol += coff_data (abfd)->local_symesz;
- ++symnum;
-
- /* 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;
- }
- }
-
- /* 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)
- {
- 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,
- 0, cs->c_naux, &main_aux);
- goto function_entry_point;
- }
-
- 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.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,
- 0, cs->c_naux, &main_aux);
-
- switch (CSECT_SMTYP (&main_aux))
- {
-
- case XTY_ER:
- /* Ignore all external references. */
- continue;
-
- case XTY_SD:
- /* A section description. */
- {
- 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)
- {
-
- /* 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);
- }
-
- complete_symtab (filestring, file_start_addr);
- cur_src_end_addr = file_end_addr;
- 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, 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;
- file_end_addr = cs->c_value + 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 = cs->c_secnum;
- }
- }
- 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;
- continue;
-
- case XMC_TC:
- #ifdef STATIC_NODEBUG_VARS
- /* We need to process these symbols if they are C_HIDEXT,
- for static variables in files compiled without -g. */
- if (cs->c_sclass == C_HIDEXT)
- break;
- else
- #endif
- continue;
-
- default:
- /* Ignore the symbol. */
- continue;
- }
- }
- break;
-
- case XTY_LD:
-
- 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_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. */
-
- 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;
-
- /* The link area is 0x18 bytes. */
- int parmvalue = ptb->framesize + 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;
-
- 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;
- }
-
- default:
- break;
- }
- }
-
- 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. */
-
- next_file_symnum = cs->c_value;
-
- /* 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_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, 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;
- break;
-
- case C_FUN:
- fcn_stab_saved = *cs;
- break;
-
- case C_FCN:
- if (STREQ (cs->c_name, ".bf"))
- {
-
- bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- 0, cs->c_naux, &main_aux);
-
- within_function = 1;
-
- mark_first_line (fcn_line_offset, cs->c_symnum);
-
- new = push_context (0, fcn_start_addr);
-
- 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 (STREQ (cs->c_name, ".ef"))
- {
-
- bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
- 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;
- 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. */
- {
- 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:
- case C_REGPARM:
- case C_TPDEF:
- case C_STRTAG:
- case C_UNTAG:
- case C_ENTAG:
- printf_unfiltered
- ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass);
- break;
-
- case C_LABEL:
- case C_NULL:
- /* Ignore these. */
- break;
-
- /* This is wrong. These symbols are XMC_TC, which means that
- the value of the symbol is the address of the TOC entry, not
- the address of the variable itself. */
- case C_HIDEXT:
- #ifdef STATIC_NODEBUG_VARS
- {
- /* This is the only place that static variables show up in files
- compiled without -g. External variables also have a C_EXT,
- so that is why we record everything as mst_file_* here. */
- enum minimal_symbol_type ms_type;
- CORE_ADDR tmpaddr;
- int sec;
-
- sec = cs_to_section (cs, objfile);
- tmpaddr = cs->c_value;
-
- switch (sec)
- {
- case SECT_OFF_TEXT:
- case SECT_OFF_RODATA:
- ms_type = mst_file_text;
- break;
- case SECT_OFF_DATA:
- ms_type = mst_file_data;
- break;
- case SECT_OFF_BSS:
- ms_type = mst_file_bss;
- break;
- default:
- ms_type = mst_unknown;
- break;
- }
- RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, ms_type,
- symname_alloced, cs->c_secnum, objfile);
- }
- #endif /* STATIC_NODEBUG_VARS */
- 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);
- }
- local_symbols = new->locals;
- }
- break;
-
- default:
- process_xcoff_symbol (cs, objfile);
- break;
- }
- }
-
- if (last_source_file)
- {
- 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 (&objfile->symbol_obstack, sizeof (struct symbol)); \
- *(SYMBOL2) = *(SYMBOL1);
-
-
- #define SYMNAME_ALLOC(NAME, ALLOCED) \
- (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 *
- 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;
-
- 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))
- {
- /* 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. */
-
- SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
- SYMBOL_TYPE (sym) = func_symbol_type;
-
- 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, provide default. */
- SYMBOL_TYPE (sym) = var_symbol_type;
-
- 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;
- #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:
- 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:
-
- /* 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:
- 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_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*) strchr (name, ':');
- if (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
- {
- complain (&rsym_complaint, name);
- return NULL;
- }
- }
- }
- return sym2;
- }
-
- /* 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. */
-
- static char *
- coff_getfilename (aux_entry)
- union internal_auxent *aux_entry;
- {
- static char buffer[BUFSIZ];
- register char *temp;
- char *result;
-
- 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';
- }
- 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 (symno)
- int symno;
- {
- struct internal_syment symbol[1];
-
- 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 (symno)
- int symno;
- {
- struct internal_syment symbol[1];
- union internal_auxent main_aux[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. */
- while (symno < symtbl_num_syms) {
- bfd_coff_swap_sym_in (symfile_bfd,
- symtbl + (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, 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;
- }
-
- /* Support for line number handling */
-
- /* This function is called for every section; it finds the outer limits
- * of the line table (minimum and maximum file offset) so that the
- * mainline code can read the whole thing for efficiency.
- */
- static void
- find_linenos(abfd, asect, vpinfo)
- bfd *abfd;
- sec_ptr asect;
- PTR vpinfo;
- {
- struct coff_symfile_info *info;
- int size, count;
- file_ptr offset, maxoff;
-
- count = asect->lineno_count;
-
- if (!STREQ (asect->name, ".text") || count == 0)
- return;
-
- size = count * coff_data (symfile_bfd)->local_linesz;
- info = (struct coff_symfile_info *)vpinfo;
- offset = asect->line_filepos;
- maxoff = offset + size;
-
- if (offset < info->min_lineno_offset || info->min_lineno_offset == 0)
- info->min_lineno_offset = offset;
-
- if (maxoff > info->max_lineno_offset)
- info->max_lineno_offset = maxoff;
- }
-
-
- /* 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. */
-
- static int
- init_lineno (abfd, offset, size)
- bfd *abfd;
- file_ptr offset;
- int size;
- {
- int val;
-
- free_linetab ();
-
- if (bfd_seek(abfd, offset, L_SET) < 0)
- return -1;
-
- linetab = (char *) xmalloc(size);
-
- val = bfd_read(linetab, 1, size, abfd);
- if (val != size)
- return -1;
-
- linetab_offset = offset;
- linetab_size = size;
- return 0;
- }
-
- static void
- free_linetab ()
- {
- if (linetab)
- free (linetab);
- linetab = NULL;
- }
-
- static void
- xcoff_new_init (objfile)
- struct objfile *objfile;
- {
- }
-
-
- /* 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().
-
- 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). */
-
- static void
- xcoff_symfile_init (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));
- 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. */
-
- static void
- xcoff_symfile_finish (objfile)
- struct objfile *objfile;
- {
- if (objfile -> sym_private != NULL)
- {
- mfree (objfile -> md, objfile -> sym_private);
- }
-
- /* Start with a fresh include table for the next objfile. */
-
- if (inclTable)
- {
- free (inclTable);
- inclTable = NULL;
- }
- inclIndx = inclLength = inclDepth = 0;
- }
-
-
- static int
- init_stringtab(abfd, offset, objfile)
- bfd *abfd;
- file_ptr offset;
- struct objfile *objfile;
- {
- long length;
- int val;
- unsigned char lengthbuf[4];
-
- if (bfd_seek(abfd, offset, L_SET) < 0)
- return -1;
-
- 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. */
-
- if (val != sizeof length || length < sizeof length)
- return 0;
-
- /* 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;
-
- memcpy(strtbl, &length, sizeof length);
- if (length == sizeof length)
- return 0;
-
- val = bfd_read(strtbl + sizeof length, 1, length - sizeof length, abfd);
-
- if (val != length - sizeof length || strtbl[length - 1] != '\0')
- return -1;
-
- return 0;
- }
-
- static int
- init_debugsection(abfd)
- bfd *abfd;
- {
- register sec_ptr secp;
- bfd_size_type length;
-
- if (debugsec) {
- free(debugsec);
- debugsec = NULL;
- }
-
- secp = bfd_get_section_by_name(abfd, ".debug");
- if (!secp)
- return 0;
-
- if (!(length = bfd_section_size(abfd, secp)))
- return 0;
-
- debugsec = (char *) xmalloc ((unsigned)length);
- if (debugsec == NULL)
- return -1;
-
- if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) {
- printf_unfiltered ("Can't read .debug section from symbol file\n");
- return -1;
- }
- return 0;
- }
-
- static void
- free_debugsection()
- {
- if (debugsec)
- free(debugsec);
- debugsec = NULL;
- }
-
-
- /* xcoff version of symbol file read. */
-
- static void
- xcoff_symfile_read (objfile, section_offset, mainline)
- struct objfile *objfile;
- struct section_offsets *section_offset;
- int mainline;
- {
- 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;
- struct cleanup *back_to = make_cleanup (null_cleanup, 0);
-
- 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 */
- stringtab_offset = symtab_offset +
- num_symbols * coff_data(abfd)->local_symesz;
-
- info->min_lineno_offset = 0;
- 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 */
- make_cleanup (free_linetab, 0);
- 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)
- {
- 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);
- }
- }
-
- /* Position to read the symbol table. Do not read it all at once. */
- 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_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 ();
-
- /* Sort symbols alphabetically within each block. */
- {
- struct symtab *s;
- for (s = objfile -> symtabs; s != NULL; s = s -> next)
- {
- sort_symtab_syms (s);
- }
- }
-
- /* Install any minimal symbols that have been collected as the current
- minimal symbols for this objfile. */
-
- install_minimal_symbols (objfile);
-
- do_cleanups (back_to);
- }
-
- /* 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 section_offsets *
- xcoff_symfile_offsets (objfile, addr)
- struct objfile *objfile;
- CORE_ADDR addr;
- {
- 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(&xcoff_sym_fns);
-
- /* Initialize symbol template later used for arguments. Its other
- fields are zero, or are filled in later. */
- SYMBOL_NAME (&parmsym) = "";
- SYMBOL_INIT_LANGUAGE_SPECIFIC (&parmsym, language_c);
- SYMBOL_NAMESPACE (&parmsym) = VAR_NAMESPACE;
- SYMBOL_CLASS (&parmsym) = LOC_ARG;
-
- 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);
- }
-