3281 lines
89 KiB
C
3281 lines
89 KiB
C
/* Read a symbol table in MIPS' format (Third-Eye).
|
||
Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
|
||
Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU. Major
|
||
work by Per Bothner and John Gilmore at Cygnus Support.
|
||
|
||
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. */
|
||
|
||
/* This module provides three functions: mipscoff_symfile_init,
|
||
which initializes to read a symbol file; mipscoff_new_init, which
|
||
discards existing cached information when all symbols are being
|
||
discarded; and mipscoff_symfile_read, which reads a symbol table
|
||
from a file.
|
||
|
||
mipscoff_symfile_read only does the minimum work necessary for letting the
|
||
user "name" things symbolically; it does not read the entire symtab.
|
||
Instead, it reads the external and static symbols and puts them in partial
|
||
symbol tables. When more extensive information is requested of a
|
||
file, the corresponding partial symbol table is mutated into a full
|
||
fledged symbol table by going back and reading the symbols
|
||
for real. mipscoff_psymtab_to_symtab() is called indirectly through
|
||
a pointer in the psymtab to do this.
|
||
|
||
ECOFF symbol tables are mostly written in the byte order of the
|
||
target machine. However, one section of the table (the auxiliary
|
||
symbol information) is written in the host byte order. There is a
|
||
bit in the other symbol info which describes which host byte order
|
||
was used. ECOFF thereby takes the trophy from Intel `b.out' for
|
||
the most brain-dead adaptation of a file format to byte order.
|
||
|
||
This module can read all four of the known byte-order combinations,
|
||
on any type of host. However, it does make (and check) the assumption
|
||
that the external form of a symbol table structure (on disk)
|
||
occupies the same number of bytes as the internal form (in a struct).
|
||
Fixing this is possible but requires larger structural changes. */
|
||
|
||
#define TM_FILE_OVERRIDE
|
||
#include "defs.h"
|
||
#include "tm-mips.h"
|
||
#include "symtab.h"
|
||
#include "gdbtypes.h"
|
||
#include "gdbcore.h"
|
||
#include "symfile.h"
|
||
#include "objfiles.h"
|
||
#include "obstack.h"
|
||
#include "buildsym.h"
|
||
#include "stabsread.h"
|
||
#include "complaints.h"
|
||
|
||
#ifdef USG
|
||
#include <sys/types.h>
|
||
#define L_SET 0
|
||
#define L_INCR 1
|
||
#endif
|
||
|
||
#include <sys/param.h>
|
||
#include <sys/file.h>
|
||
#include <sys/stat.h>
|
||
#include <string.h>
|
||
|
||
#include "gdb-stabs.h"
|
||
|
||
#include "coff/mips.h" /* COFF-like aspects of ecoff files */
|
||
#include "coff/ecoff-ext.h" /* External forms of ecoff sym structures */
|
||
|
||
#include "libbfd.h" /* FIXME Secret internal BFD stuff (bfd_read) */
|
||
#include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */
|
||
#include "aout/aout64.h"
|
||
#include "aout/stab_gnu.h" /* STABS information */
|
||
#include "expression.h"
|
||
#include "language.h" /* Needed inside partial-stab.h */
|
||
|
||
struct coff_exec
|
||
{
|
||
struct external_filehdr f;
|
||
struct external_aouthdr a;
|
||
};
|
||
|
||
/* Each partial symbol table entry contains a pointer to private data for the
|
||
read_symtab() function to use when expanding a partial symbol table entry
|
||
to a full symbol table entry.
|
||
|
||
For mipsread this structure contains the index of the FDR that this psymtab
|
||
represents and a pointer to the symbol table header HDRR from the symbol
|
||
file that the psymtab was created from. */
|
||
|
||
#define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
|
||
#define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
|
||
#define CUR_HDR(p) (PST_PRIVATE(p)->cur_hdr)
|
||
|
||
struct symloc
|
||
{
|
||
int fdr_idx;
|
||
HDRR *cur_hdr;
|
||
EXTR **extern_tab; /* Pointer to external symbols for this file. */
|
||
int extern_count; /* Size of extern_tab. */
|
||
};
|
||
|
||
/* Things we import explicitly from other modules */
|
||
|
||
extern int info_verbose;
|
||
|
||
/* Various complaints about symbol reading that don't abort the process */
|
||
|
||
struct complaint bad_file_number_complaint =
|
||
{"bad file number %d", 0, 0};
|
||
|
||
struct complaint index_complaint =
|
||
{"bad aux index at symbol %s", 0, 0};
|
||
|
||
struct complaint aux_index_complaint =
|
||
{"bad proc end in aux found from symbol %s", 0, 0};
|
||
|
||
struct complaint block_index_complaint =
|
||
{"bad aux index at block symbol %s", 0, 0};
|
||
|
||
struct complaint unknown_ext_complaint =
|
||
{"unknown external symbol %s", 0, 0};
|
||
|
||
struct complaint unknown_sym_complaint =
|
||
{"unknown local symbol %s", 0, 0};
|
||
|
||
struct complaint unknown_st_complaint =
|
||
{"with type %d", 0, 0};
|
||
|
||
struct complaint block_overflow_complaint =
|
||
{"block containing %s overfilled", 0, 0};
|
||
|
||
struct complaint basic_type_complaint =
|
||
{"cannot map MIPS basic type 0x%x", 0, 0};
|
||
|
||
struct complaint unknown_type_qual_complaint =
|
||
{"unknown type qualifier 0x%x", 0, 0};
|
||
|
||
struct complaint array_bitsize_complaint =
|
||
{"size of array target type not known, assuming %d bits", 0, 0};
|
||
|
||
struct complaint bad_tag_guess_complaint =
|
||
{"guessed tag type of %s incorrectly", 0, 0};
|
||
|
||
struct complaint block_member_complaint =
|
||
{"declaration block contains unhandled symbol type %d", 0, 0};
|
||
|
||
struct complaint stEnd_complaint =
|
||
{"stEnd with storage class %d not handled", 0, 0};
|
||
|
||
struct complaint unknown_mips_symtype_complaint =
|
||
{"unknown symbol type 0x%x", 0, 0};
|
||
|
||
struct complaint stab_unknown_complaint =
|
||
{"unknown stabs symbol %s", 0, 0};
|
||
|
||
struct complaint pdr_for_nonsymbol_complaint =
|
||
{"PDR for %s, but no symbol", 0, 0};
|
||
|
||
struct complaint pdr_static_symbol_complaint =
|
||
{"can't handle PDR for static proc at 0x%x", 0, 0};
|
||
|
||
/* Macros and extra defs */
|
||
|
||
/* Already-parsed symbols are marked specially */
|
||
|
||
#define stParsed stType
|
||
|
||
/* Puns: hard to find whether -g was used and how */
|
||
|
||
#define MIN_GLEVEL GLEVEL_0
|
||
#define compare_glevel(a,b) \
|
||
(((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
|
||
((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
|
||
|
||
/* When looking at .o files, avoid tripping over zero pointers.
|
||
FIXME; places that use this should be fixed to convert from
|
||
external to internal format, rather than examining in-place. */
|
||
|
||
#define UNSAFE_DATA_ADDR(p) ((p) == 0)
|
||
|
||
/* Things that really are local to this module */
|
||
|
||
/* Remember what we deduced to be the source language of this psymtab. */
|
||
|
||
static enum language psymtab_language = language_unknown;
|
||
|
||
/* MIPS symtab header for the current file */
|
||
|
||
static HDRR *cur_hdr;
|
||
|
||
/* Pointer to current file decriptor record, and its index */
|
||
|
||
static FDR *cur_fdr;
|
||
static int cur_fd;
|
||
|
||
/* Index of current symbol */
|
||
|
||
static int cur_sdx;
|
||
|
||
/* Note how much "debuggable" this image is. We would like
|
||
to see at least one FDR with full symbols */
|
||
|
||
static max_gdbinfo;
|
||
static max_glevel;
|
||
|
||
/* When examining .o files, report on undefined symbols */
|
||
|
||
static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
|
||
|
||
/* Pseudo symbol to use when putting stabs into the symbol table. */
|
||
|
||
static char stabs_symbol[] = STABS_SYMBOL;
|
||
|
||
/* Extra builtin types */
|
||
|
||
struct type *builtin_type_complex;
|
||
struct type *builtin_type_double_complex;
|
||
struct type *builtin_type_fixed_dec;
|
||
struct type *builtin_type_float_dec;
|
||
struct type *builtin_type_string;
|
||
|
||
/* Forward declarations */
|
||
|
||
static void
|
||
fixup_symtab PARAMS ((HDRR *, char *, file_ptr, bfd *));
|
||
|
||
static void
|
||
read_mips_symtab PARAMS ((struct objfile *, struct section_offsets *));
|
||
|
||
static void
|
||
read_the_mips_symtab PARAMS ((bfd *, CORE_ADDR *));
|
||
|
||
static int
|
||
upgrade_type PARAMS ((struct type **, int, union aux_ext *, int));
|
||
|
||
static void
|
||
parse_partial_symbols PARAMS ((int, struct objfile *,
|
||
struct section_offsets *));
|
||
|
||
static int
|
||
cross_ref PARAMS ((union aux_ext *, struct type **, enum type_code, char **,
|
||
int));
|
||
|
||
static void
|
||
fixup_sigtramp PARAMS ((void));
|
||
|
||
static struct symbol *
|
||
new_symbol PARAMS ((char *));
|
||
|
||
static struct type *
|
||
new_type PARAMS ((char *));
|
||
|
||
static struct block *
|
||
new_block PARAMS ((int));
|
||
|
||
static struct symtab *
|
||
new_symtab PARAMS ((char *, int, int, struct objfile *));
|
||
|
||
static struct linetable *
|
||
new_linetable PARAMS ((int));
|
||
|
||
static struct blockvector *
|
||
new_bvect PARAMS ((int));
|
||
|
||
static struct type *
|
||
parse_type PARAMS ((union aux_ext *, int *, int));
|
||
|
||
static struct symbol *
|
||
mylookup_symbol PARAMS ((char *, struct block *, enum namespace,
|
||
enum address_class));
|
||
|
||
static struct block *
|
||
shrink_block PARAMS ((struct block *, struct symtab *));
|
||
|
||
static PTR
|
||
xzalloc PARAMS ((unsigned int));
|
||
|
||
static void
|
||
sort_blocks PARAMS ((struct symtab *));
|
||
|
||
static int
|
||
compare_blocks PARAMS ((const void *, const void *));
|
||
|
||
static struct partial_symtab *
|
||
new_psymtab PARAMS ((char *, struct objfile *));
|
||
|
||
#if 0
|
||
static struct partial_symtab *
|
||
parse_fdr PARAMS ((int, int, struct objfile *));
|
||
#endif
|
||
|
||
static void
|
||
psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *));
|
||
|
||
static void
|
||
add_block PARAMS ((struct block *, struct symtab *));
|
||
|
||
static void
|
||
add_symbol PARAMS ((struct symbol *, struct block *));
|
||
|
||
static int
|
||
add_line PARAMS ((struct linetable *, int, CORE_ADDR, int));
|
||
|
||
static struct linetable *
|
||
shrink_linetable PARAMS ((struct linetable *));
|
||
|
||
static char *
|
||
mips_next_symbol_text PARAMS ((void));
|
||
|
||
/* Things we export to other modules */
|
||
|
||
/* Address bounds for the signal trampoline in inferior, if any */
|
||
/* FIXME: Nothing really seems to use this. Why is it here? */
|
||
|
||
CORE_ADDR sigtramp_address, sigtramp_end;
|
||
|
||
static void
|
||
mipscoff_new_init (ignore)
|
||
struct objfile *ignore;
|
||
{
|
||
}
|
||
|
||
static void
|
||
mipscoff_symfile_init (objfile)
|
||
struct objfile *objfile;
|
||
{
|
||
if (objfile->sym_private != NULL)
|
||
{
|
||
mfree (objfile->md, objfile->sym_private);
|
||
}
|
||
objfile->sym_private = NULL;
|
||
}
|
||
|
||
static void
|
||
mipscoff_symfile_read (objfile, section_offsets, mainline)
|
||
struct objfile *objfile;
|
||
struct section_offsets *section_offsets;
|
||
int mainline;
|
||
{
|
||
init_minimal_symbol_collection ();
|
||
make_cleanup (discard_minimal_symbols, 0);
|
||
|
||
/* Now that the executable file is positioned at symbol table,
|
||
process it and define symbols accordingly. */
|
||
|
||
read_mips_symtab (objfile, section_offsets);
|
||
|
||
/* Install any minimal symbols that have been collected as the current
|
||
minimal symbols for this objfile. */
|
||
|
||
install_minimal_symbols (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
|
||
mipscoff_symfile_finish (objfile)
|
||
struct objfile *objfile;
|
||
{
|
||
if (objfile->sym_private != NULL)
|
||
{
|
||
mfree (objfile->md, objfile->sym_private);
|
||
}
|
||
|
||
/* If we have a file symbol header lying around, blow it away. */
|
||
|
||
if (cur_hdr)
|
||
{
|
||
free ((PTR) cur_hdr);
|
||
}
|
||
cur_hdr = 0;
|
||
}
|
||
|
||
/* Allocate zeroed memory */
|
||
|
||
static PTR
|
||
xzalloc (size)
|
||
unsigned int size;
|
||
{
|
||
PTR p = xmalloc (size);
|
||
|
||
memset (p, 0, size);
|
||
return p;
|
||
}
|
||
|
||
/* Exported procedure: Builds a symtab from the PST partial one.
|
||
Restores the environment in effect when PST was created, delegates
|
||
most of the work to an ancillary procedure, and sorts
|
||
and reorders the symtab list at the end */
|
||
|
||
static void
|
||
mipscoff_psymtab_to_symtab (pst)
|
||
struct partial_symtab *pst;
|
||
{
|
||
|
||
if (!pst)
|
||
return;
|
||
|
||
if (info_verbose)
|
||
{
|
||
printf_filtered ("Reading in symbols for %s...", pst->filename);
|
||
fflush (stdout);
|
||
}
|
||
/* Restore the header and list of pending typedefs */
|
||
cur_hdr = CUR_HDR (pst);
|
||
|
||
next_symbol_text_func = mips_next_symbol_text;
|
||
|
||
psymtab_to_symtab_1 (pst, pst->filename);
|
||
|
||
/* Match with global symbols. This only needs to be done once,
|
||
after all of the symtabs and dependencies have been read in. */
|
||
scan_file_globals (pst->objfile);
|
||
|
||
if (info_verbose)
|
||
printf_filtered ("done.\n");
|
||
}
|
||
|
||
/* Exported procedure: Is PC in the signal trampoline code */
|
||
|
||
int
|
||
in_sigtramp (pc, ignore)
|
||
CORE_ADDR pc;
|
||
char *ignore; /* function name */
|
||
{
|
||
if (sigtramp_address == 0)
|
||
fixup_sigtramp ();
|
||
return (pc >= sigtramp_address && pc < sigtramp_end);
|
||
}
|
||
|
||
/* File-level interface functions */
|
||
|
||
/* Read the symtab information from file ABFD into memory. Also,
|
||
return address just past end of our text segment in *END_OF_TEXT_SEGP. */
|
||
|
||
static void
|
||
read_the_mips_symtab (abfd, end_of_text_segp)
|
||
bfd *abfd;
|
||
CORE_ADDR *end_of_text_segp;
|
||
{
|
||
int stsize, st_hdrsize;
|
||
file_ptr st_filptr;
|
||
struct hdr_ext hdr_ext;
|
||
HDRR st_hdr;
|
||
/* Header for executable/object file we read symbols from */
|
||
struct coff_exec filhdr;
|
||
int val;
|
||
|
||
/* We need some info from the initial headers */
|
||
val = bfd_seek (abfd, (file_ptr) 0, L_SET);
|
||
val = bfd_read ((PTR) & filhdr, sizeof filhdr, 1, abfd);
|
||
|
||
if (end_of_text_segp)
|
||
*end_of_text_segp =
|
||
bfd_h_get_32 (abfd, filhdr.a.text_start) +
|
||
bfd_h_get_32 (abfd, filhdr.a.tsize);
|
||
|
||
/* Find and read the symbol table header */
|
||
st_hdrsize = bfd_h_get_32 (abfd, filhdr.f.f_nsyms);
|
||
st_filptr = bfd_h_get_32 (abfd, filhdr.f.f_symptr);
|
||
if (st_filptr == 0)
|
||
return;
|
||
|
||
bfd_seek (abfd, st_filptr, L_SET);
|
||
if (st_hdrsize != sizeof (hdr_ext))
|
||
{ /* Profanity check */
|
||
error ("Wrong header size: %d, not %d", st_hdrsize,
|
||
sizeof (hdr_ext));
|
||
}
|
||
if (bfd_read ((PTR) & hdr_ext, st_hdrsize, 1, abfd) != st_hdrsize)
|
||
goto readerr;
|
||
ecoff_swap_hdr_in (abfd, &hdr_ext, &st_hdr);
|
||
|
||
/* Find out how large the symbol table is */
|
||
stsize = ((st_hdr.cbExtOffset - (st_filptr + st_hdrsize))
|
||
+ st_hdr.iextMax * cbEXTR);
|
||
|
||
/* Allocate space for the symbol table. Read it in. */
|
||
cur_hdr = (HDRR *) xmalloc (stsize + st_hdrsize);
|
||
|
||
memcpy ((PTR) cur_hdr, (PTR) & hdr_ext, st_hdrsize);
|
||
if (bfd_read ((char *) cur_hdr + st_hdrsize, stsize, 1, abfd) != stsize)
|
||
goto readerr;
|
||
|
||
/* Fixup file_pointers in it */
|
||
fixup_symtab (cur_hdr, (char *) cur_hdr + st_hdrsize,
|
||
st_filptr + st_hdrsize, abfd);
|
||
|
||
return;
|
||
readerr:
|
||
error ("Short read on %s", bfd_get_filename (abfd));
|
||
}
|
||
|
||
|
||
/* Turn all file-relative pointers in the symtab described by HDR
|
||
into memory pointers, given that the symtab itself is located
|
||
at DATA in memory and F_PTR in the file.
|
||
|
||
Byte-swap all the data structures, in place, while we are at it --
|
||
except AUX entries, which we leave in their original byte order.
|
||
They will be swapped as they are used instead. (FIXME: we ought to
|
||
do all the data structures that way.) */
|
||
|
||
static void
|
||
fixup_symtab (hdr, data, f_ptr, abfd)
|
||
HDRR *hdr;
|
||
char *data;
|
||
file_ptr f_ptr;
|
||
bfd *abfd;
|
||
{
|
||
int f_idx, s_idx, i;
|
||
FDR *fh;
|
||
SYMR *sh;
|
||
PDR *pr;
|
||
EXTR *esh;
|
||
struct rfd_ext *rbase;
|
||
|
||
/* This function depends on the external and internal forms
|
||
of the MIPS symbol table taking identical space. Check this
|
||
assumption at compile-time.
|
||
DO NOT DELETE THESE ENTRIES, OR COMMENT THEM OUT, JUST BECAUSE SOME
|
||
"LINT" OR COMPILER THINKS THEY ARE UNUSED! Thank you. */
|
||
static check_hdr1[1 + sizeof (struct hdr_ext) - sizeof (HDRR)] = {0};
|
||
static check_hdr2[1 + sizeof (HDRR) - sizeof (struct hdr_ext)] = {0};
|
||
static check_fdr1[1 + sizeof (struct fdr_ext) - sizeof (FDR)] = {0};
|
||
static check_fdr2[1 + sizeof (FDR) - sizeof (struct fdr_ext)] = {0};
|
||
static check_pdr1[1 + sizeof (struct pdr_ext) - sizeof (PDR)] = {0};
|
||
static check_pdr2[1 + sizeof (PDR) - sizeof (struct pdr_ext)] = {0};
|
||
static check_sym1[1 + sizeof (struct sym_ext) - sizeof (SYMR)] = {0};
|
||
static check_sym2[1 + sizeof (SYMR) - sizeof (struct sym_ext)] = {0};
|
||
static check_ext1[1 + sizeof (struct ext_ext) - sizeof (EXTR)] = {0};
|
||
static check_ext2[1 + sizeof (EXTR) - sizeof (struct ext_ext)] = {0};
|
||
static check_rfd1[1 + sizeof (struct rfd_ext) - sizeof (RFDT)] = {0};
|
||
static check_rfd2[1 + sizeof (RFDT) - sizeof (struct rfd_ext)] = {0};
|
||
|
||
/* Swap in the header record. */
|
||
ecoff_swap_hdr_in (abfd, hdr, hdr);
|
||
|
||
/*
|
||
* These fields are useless (and empty) by now:
|
||
* hdr->cbDnOffset, hdr->cbOptOffset
|
||
* We use them for other internal purposes.
|
||
*/
|
||
hdr->cbDnOffset = 0;
|
||
hdr->cbOptOffset = 0;
|
||
|
||
#define FIX(off) \
|
||
if (hdr->off) hdr->off = (unsigned int)data + (hdr->off - f_ptr);
|
||
|
||
FIX (cbLineOffset);
|
||
FIX (cbPdOffset);
|
||
FIX (cbSymOffset);
|
||
FIX (cbOptOffset);
|
||
FIX (cbAuxOffset);
|
||
FIX (cbSsOffset);
|
||
FIX (cbSsExtOffset);
|
||
FIX (cbFdOffset);
|
||
FIX (cbRfdOffset);
|
||
FIX (cbExtOffset);
|
||
#undef FIX
|
||
|
||
/* Fix all the RFD's. */
|
||
rbase = (struct rfd_ext *) (hdr->cbRfdOffset);
|
||
for (i = 0; i < hdr->crfd; i++)
|
||
{
|
||
ecoff_swap_rfd_in (abfd, rbase + i, (pRFDT) rbase + i);
|
||
}
|
||
|
||
/* Fix all string pointers inside the symtab, and
|
||
the FDR records. Also fix other miscellany. */
|
||
|
||
for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
|
||
{
|
||
register unsigned code_offset;
|
||
|
||
/* Header itself, and strings */
|
||
fh = (FDR *) (hdr->cbFdOffset) + f_idx;
|
||
|
||
/* Swap in the FDR */
|
||
ecoff_swap_fdr_in (abfd, fh, fh);
|
||
|
||
fh->issBase += hdr->cbSsOffset;
|
||
if (fh->rss != -1)
|
||
fh->rss = (long) fh->rss + fh->issBase;
|
||
|
||
/* Local symbols */
|
||
fh->isymBase = (int) ((SYMR *) (hdr->cbSymOffset) + fh->isymBase);
|
||
|
||
/* FIXME! Probably don't want to do this here! */
|
||
for (s_idx = 0; s_idx < fh->csym; s_idx++)
|
||
{
|
||
sh = (SYMR *) fh->isymBase + s_idx;
|
||
ecoff_swap_sym_in (abfd, sh, sh);
|
||
|
||
sh->iss = (long) sh->iss + fh->issBase;
|
||
sh->reserved = 0;
|
||
}
|
||
|
||
cur_fd = f_idx;
|
||
|
||
/* cannot fix fh->ipdFirst because it is a short */
|
||
#define IPDFIRST(h,fh) \
|
||
((long)h->cbPdOffset + fh->ipdFirst * sizeof(PDR))
|
||
|
||
/* Optional symbols (actually used for partial_symtabs) */
|
||
fh->ioptBase = 0;
|
||
fh->copt = 0;
|
||
|
||
/* Aux symbols */
|
||
if (fh->caux)
|
||
fh->iauxBase = hdr->cbAuxOffset + fh->iauxBase * sizeof (union aux_ext);
|
||
/* Relative file descriptor table */
|
||
fh->rfdBase = hdr->cbRfdOffset + fh->rfdBase * sizeof (RFDT);
|
||
|
||
/* Line numbers */
|
||
if (fh->cbLine)
|
||
fh->cbLineOffset += hdr->cbLineOffset;
|
||
|
||
/* Procedure symbols. (XXX This should be done later) */
|
||
code_offset = fh->adr;
|
||
for (s_idx = 0; s_idx < fh->cpd; s_idx++)
|
||
{
|
||
unsigned name, only_ext;
|
||
|
||
pr = (PDR *) (IPDFIRST (hdr, fh)) + s_idx;
|
||
ecoff_swap_pdr_in (abfd, pr, pr);
|
||
|
||
/* Simple rule to find files linked "-x" */
|
||
only_ext = fh->rss == -1;
|
||
if (only_ext)
|
||
{
|
||
if (pr->isym == -1)
|
||
{
|
||
/* static function */
|
||
sh = (SYMR *) - 1;
|
||
}
|
||
else
|
||
{
|
||
/* external */
|
||
name = hdr->cbExtOffset + pr->isym * sizeof (EXTR);
|
||
sh = &((EXTR *) name)->asym;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Full symbols */
|
||
sh = (SYMR *) fh->isymBase + pr->isym;
|
||
/* Included code ? */
|
||
if (s_idx == 0 && pr->adr != 0)
|
||
code_offset -= pr->adr;
|
||
}
|
||
|
||
/* Turn index into a pointer */
|
||
pr->isym = (long) sh;
|
||
|
||
/* Fix line numbers */
|
||
pr->cbLineOffset += fh->cbLineOffset;
|
||
|
||
/* Relocate address */
|
||
if (!only_ext)
|
||
pr->adr += code_offset;
|
||
}
|
||
}
|
||
|
||
/* External symbols: swap in, and fix string */
|
||
for (s_idx = 0; s_idx < hdr->iextMax; s_idx++)
|
||
{
|
||
esh = (EXTR *) (hdr->cbExtOffset) + s_idx;
|
||
ecoff_swap_ext_in (abfd, esh, esh);
|
||
esh->asym.iss = esh->asym.iss + hdr->cbSsExtOffset;
|
||
}
|
||
}
|
||
|
||
|
||
/* Find a file descriptor given its index RF relative to a file CF */
|
||
|
||
static FDR *
|
||
get_rfd (cf, rf)
|
||
int cf, rf;
|
||
{
|
||
register FDR *f;
|
||
|
||
f = (FDR *) (cur_hdr->cbFdOffset) + cf;
|
||
/* Object files do not have the RFD table, all refs are absolute */
|
||
if (f->rfdBase == 0)
|
||
return (FDR *) (cur_hdr->cbFdOffset) + rf;
|
||
cf = *((pRFDT) f->rfdBase + rf);
|
||
return (FDR *) (cur_hdr->cbFdOffset) + cf;
|
||
}
|
||
|
||
/* Return a safer print NAME for a file descriptor */
|
||
|
||
static char *
|
||
fdr_name (name)
|
||
char *name;
|
||
{
|
||
if (name == (char *) -1)
|
||
return "<stripped file>";
|
||
if (UNSAFE_DATA_ADDR (name))
|
||
return "<NFY>";
|
||
return name;
|
||
}
|
||
|
||
|
||
/* Read in and parse the symtab of the file OBJFILE. Symbols from
|
||
different sections are relocated via the SECTION_OFFSETS. */
|
||
|
||
static void
|
||
read_mips_symtab (objfile, section_offsets)
|
||
struct objfile *objfile;
|
||
struct section_offsets *section_offsets;
|
||
{
|
||
CORE_ADDR end_of_text_seg;
|
||
|
||
read_the_mips_symtab (objfile->obfd, &end_of_text_seg);
|
||
|
||
parse_partial_symbols (end_of_text_seg, objfile, section_offsets);
|
||
|
||
#if 0
|
||
/*
|
||
* Check to make sure file was compiled with -g.
|
||
* If not, warn the user of this limitation.
|
||
*/
|
||
if (compare_glevel (max_glevel, GLEVEL_2) < 0)
|
||
{
|
||
if (max_gdbinfo == 0)
|
||
printf (
|
||
"\n%s not compiled with -g, debugging support is limited.\n",
|
||
objfile->name);
|
||
printf (
|
||
"You should compile with -g2 or -g3 for best debugging support.\n");
|
||
fflush (stdout);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Local utilities */
|
||
|
||
/* Map of FDR indexes to partial symtabs */
|
||
|
||
struct pst_map
|
||
{
|
||
struct partial_symtab *pst; /* the psymtab proper */
|
||
int n_globals; /* exported globals (external symbols) */
|
||
int globals_offset; /* cumulative */
|
||
};
|
||
|
||
|
||
/* Utility stack, used to nest procedures and blocks properly.
|
||
It is a doubly linked list, to avoid too many alloc/free.
|
||
Since we might need it quite a few times it is NOT deallocated
|
||
after use. */
|
||
|
||
static struct parse_stack
|
||
{
|
||
struct parse_stack *next, *prev;
|
||
struct symtab *cur_st; /* Current symtab. */
|
||
struct block *cur_block; /* Block in it. */
|
||
int blocktype; /* What are we parsing. */
|
||
int maxsyms; /* Max symbols in this block. */
|
||
struct type *cur_type; /* Type we parse fields for. */
|
||
int cur_field; /* Field number in cur_type. */
|
||
int procadr; /* Start addres of this procedure */
|
||
int numargs; /* Its argument count */
|
||
} *top_stack; /* Top stack ptr */
|
||
|
||
|
||
/* Enter a new lexical context */
|
||
|
||
static void
|
||
push_parse_stack ()
|
||
{
|
||
struct parse_stack *new;
|
||
|
||
/* Reuse frames if possible */
|
||
if (top_stack && top_stack->prev)
|
||
new = top_stack->prev;
|
||
else
|
||
new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));
|
||
/* Initialize new frame with previous content */
|
||
if (top_stack)
|
||
{
|
||
register struct parse_stack *prev = new->prev;
|
||
|
||
*new = *top_stack;
|
||
top_stack->prev = new;
|
||
new->prev = prev;
|
||
new->next = top_stack;
|
||
}
|
||
top_stack = new;
|
||
}
|
||
|
||
/* Exit a lexical context */
|
||
|
||
static void
|
||
pop_parse_stack ()
|
||
{
|
||
if (!top_stack)
|
||
return;
|
||
if (top_stack->next)
|
||
top_stack = top_stack->next;
|
||
}
|
||
|
||
|
||
/* Cross-references might be to things we haven't looked at
|
||
yet, e.g. type references. To avoid too many type
|
||
duplications we keep a quick fixup table, an array
|
||
of lists of references indexed by file descriptor */
|
||
|
||
static struct mips_pending
|
||
{
|
||
struct mips_pending *next; /* link */
|
||
SYMR *s; /* the symbol */
|
||
struct type *t; /* its partial type descriptor */
|
||
} **pending_list;
|
||
|
||
|
||
/* Check whether we already saw symbol SH in file FH as undefined */
|
||
|
||
static struct mips_pending *
|
||
is_pending_symbol (fh, sh)
|
||
FDR *fh;
|
||
SYMR *sh;
|
||
{
|
||
int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
|
||
register struct mips_pending *p;
|
||
|
||
/* Linear search is ok, list is typically no more than 10 deep */
|
||
for (p = pending_list[f_idx]; p; p = p->next)
|
||
if (p->s == sh)
|
||
break;
|
||
return p;
|
||
}
|
||
|
||
/* Add a new undef symbol SH of type T */
|
||
|
||
static void
|
||
add_pending (fh, sh, t)
|
||
FDR *fh;
|
||
SYMR *sh;
|
||
struct type *t;
|
||
{
|
||
int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
|
||
struct mips_pending *p = is_pending_symbol (fh, sh);
|
||
|
||
/* Make sure we do not make duplicates */
|
||
if (!p)
|
||
{
|
||
p = (struct mips_pending *) xmalloc (sizeof (*p));
|
||
p->s = sh;
|
||
p->t = t;
|
||
p->next = pending_list[f_idx];
|
||
pending_list[f_idx] = p;
|
||
}
|
||
sh->reserved = 1; /* for quick check */
|
||
}
|
||
|
||
/* Throw away undef entries when done with file index F_IDX */
|
||
/* FIXME -- storage leak. This is never called!!! --gnu */
|
||
|
||
#if 0
|
||
|
||
static void
|
||
free_pending (f_idx)
|
||
int f_idx;
|
||
{
|
||
register struct mips_pending *p, *q;
|
||
|
||
for (p = pending_list[f_idx]; p; p = q)
|
||
{
|
||
q = p->next;
|
||
free ((PTR) p);
|
||
}
|
||
pending_list[f_idx] = 0;
|
||
}
|
||
|
||
#endif
|
||
|
||
static char *
|
||
prepend_tag_kind (tag_name, type_code)
|
||
char *tag_name;
|
||
enum type_code type_code;
|
||
{
|
||
char *prefix;
|
||
char *result;
|
||
switch (type_code)
|
||
{
|
||
case TYPE_CODE_ENUM:
|
||
prefix = "enum ";
|
||
break;
|
||
case TYPE_CODE_STRUCT:
|
||
prefix = "struct ";
|
||
break;
|
||
case TYPE_CODE_UNION:
|
||
prefix = "union ";
|
||
break;
|
||
default:
|
||
prefix = "";
|
||
}
|
||
|
||
result = (char *) obstack_alloc (¤t_objfile->symbol_obstack,
|
||
strlen (prefix) + strlen (tag_name) + 1);
|
||
sprintf (result, "%s%s", prefix, tag_name);
|
||
return result;
|
||
}
|
||
|
||
|
||
/* Parsing Routines proper. */
|
||
|
||
/* Parse a single symbol. Mostly just make up a GDB symbol for it.
|
||
For blocks, procedures and types we open a new lexical context.
|
||
This is basically just a big switch on the symbol's type.
|
||
Argument AX is the base pointer of aux symbols for this file (fh->iauxBase).
|
||
BIGEND says whether aux symbols are big-endian or little-endian.
|
||
Return count of SYMR's handled (normally one). */
|
||
|
||
static int
|
||
parse_symbol (sh, ax, bigend)
|
||
SYMR *sh;
|
||
union aux_ext *ax;
|
||
int bigend;
|
||
{
|
||
char *name;
|
||
struct symbol *s;
|
||
struct block *b;
|
||
struct type *t;
|
||
struct field *f;
|
||
int count = 1;
|
||
/* When a symbol is cross-referenced from other files/symbols
|
||
we mark it explicitly */
|
||
int pend = (sh->reserved == 1);
|
||
enum address_class class;
|
||
TIR tir;
|
||
|
||
switch (sh->st)
|
||
{
|
||
|
||
case stNil:
|
||
break;
|
||
|
||
case stGlobal: /* external symbol, goes into global block */
|
||
class = LOC_STATIC;
|
||
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
|
||
GLOBAL_BLOCK);
|
||
s = new_symbol ((char *) sh->iss);
|
||
SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
|
||
goto data;
|
||
|
||
case stStatic: /* static data, goes into current block. */
|
||
class = LOC_STATIC;
|
||
b = top_stack->cur_block;
|
||
s = new_symbol ((char *) sh->iss);
|
||
SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
|
||
goto data;
|
||
|
||
case stLocal: /* local variable, goes into current block */
|
||
if (sh->sc == scRegister)
|
||
{
|
||
class = LOC_REGISTER;
|
||
if (sh->value > 31)
|
||
sh->value += FP0_REGNUM - 32;
|
||
}
|
||
else
|
||
class = LOC_LOCAL;
|
||
b = top_stack->cur_block;
|
||
s = new_symbol ((char *) sh->iss);
|
||
SYMBOL_VALUE (s) = sh->value;
|
||
|
||
data: /* Common code for symbols describing data */
|
||
SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
|
||
SYMBOL_CLASS (s) = class;
|
||
add_symbol (s, b);
|
||
|
||
/* Type could be missing in a number of cases */
|
||
if (sh->sc == scUndefined || sh->sc == scNil ||
|
||
sh->index == 0xfffff)
|
||
SYMBOL_TYPE (s) = builtin_type_int; /* undefined? */
|
||
else
|
||
SYMBOL_TYPE (s) = parse_type (ax + sh->index, 0, bigend);
|
||
/* Value of a data symbol is its memory address */
|
||
break;
|
||
|
||
case stParam: /* arg to procedure, goes into current block */
|
||
max_gdbinfo++;
|
||
top_stack->numargs++;
|
||
|
||
name = (char *) sh->iss;
|
||
/* Special GNU C++ name. */
|
||
if (name[0] == CPLUS_MARKER && name[1] == 't' && name[2] == 0)
|
||
name = "this"; /* FIXME, not alloc'd in obstack */
|
||
s = new_symbol (name);
|
||
|
||
SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
|
||
if (sh->sc == scRegister)
|
||
{
|
||
SYMBOL_CLASS (s) = LOC_REGPARM;
|
||
if (sh->value > 31)
|
||
sh->value += FP0_REGNUM - 32;
|
||
}
|
||
else
|
||
SYMBOL_CLASS (s) = LOC_ARG;
|
||
SYMBOL_VALUE (s) = sh->value;
|
||
SYMBOL_TYPE (s) = parse_type (ax + sh->index, 0, bigend);
|
||
add_symbol (s, top_stack->cur_block);
|
||
#if 0
|
||
/* FIXME: This has not been tested. See dbxread.c */
|
||
/* Add the type of this parameter to the function/procedure
|
||
type of this block. */
|
||
add_param_to_type (&top_stack->cur_block->function->type, s);
|
||
#endif
|
||
break;
|
||
|
||
case stLabel: /* label, goes into current block */
|
||
s = new_symbol ((char *) sh->iss);
|
||
SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */
|
||
SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */
|
||
SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
|
||
SYMBOL_TYPE (s) = builtin_type_int;
|
||
add_symbol (s, top_stack->cur_block);
|
||
break;
|
||
|
||
case stProc: /* Procedure, usually goes into global block */
|
||
case stStaticProc: /* Static procedure, goes into current block */
|
||
s = new_symbol ((char *) sh->iss);
|
||
SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_BLOCK;
|
||
/* Type of the return value */
|
||
if (sh->sc == scUndefined || sh->sc == scNil)
|
||
t = builtin_type_int;
|
||
else
|
||
t = parse_type (ax + sh->index + 1, 0, bigend);
|
||
b = top_stack->cur_block;
|
||
if (sh->st == stProc)
|
||
{
|
||
struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
|
||
/* The next test should normally be true,
|
||
but provides a hook for nested functions
|
||
(which we don't want to make global). */
|
||
if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
|
||
b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
}
|
||
add_symbol (s, b);
|
||
|
||
/* Make a type for the procedure itself */
|
||
#if 0
|
||
/* FIXME: This has not been tested yet! See dbxread.c */
|
||
/* Generate a template for the type of this function. The
|
||
types of the arguments will be added as we read the symbol
|
||
table. */
|
||
bcopy (SYMBOL_TYPE (s), lookup_function_type (t), sizeof (struct type));
|
||
#else
|
||
SYMBOL_TYPE (s) = lookup_function_type (t);
|
||
#endif
|
||
|
||
/* Create and enter a new lexical context */
|
||
b = new_block (top_stack->maxsyms);
|
||
SYMBOL_BLOCK_VALUE (s) = b;
|
||
BLOCK_FUNCTION (b) = s;
|
||
BLOCK_START (b) = BLOCK_END (b) = sh->value;
|
||
BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
|
||
add_block (b, top_stack->cur_st);
|
||
|
||
/* Not if we only have partial info */
|
||
if (sh->sc == scUndefined || sh->sc == scNil)
|
||
break;
|
||
|
||
push_parse_stack ();
|
||
top_stack->cur_block = b;
|
||
top_stack->blocktype = sh->st;
|
||
top_stack->cur_type = SYMBOL_TYPE (s);
|
||
top_stack->cur_field = -1;
|
||
top_stack->procadr = sh->value;
|
||
top_stack->numargs = 0;
|
||
|
||
sh->value = (long) SYMBOL_TYPE (s);
|
||
break;
|
||
|
||
/* Beginning of code for structure, union, and enum definitions.
|
||
They all share a common set of local variables, defined here. */
|
||
{
|
||
enum type_code type_code;
|
||
SYMR *tsym;
|
||
int nfields;
|
||
long max_value;
|
||
struct field *f;
|
||
|
||
case stStruct: /* Start a block defining a struct type */
|
||
type_code = TYPE_CODE_STRUCT;
|
||
goto structured_common;
|
||
|
||
case stUnion: /* Start a block defining a union type */
|
||
type_code = TYPE_CODE_UNION;
|
||
goto structured_common;
|
||
|
||
case stEnum: /* Start a block defining an enum type */
|
||
type_code = TYPE_CODE_ENUM;
|
||
goto structured_common;
|
||
|
||
case stBlock: /* Either a lexical block, or some type */
|
||
if (sh->sc != scInfo)
|
||
goto case_stBlock_code; /* Lexical block */
|
||
|
||
type_code = TYPE_CODE_UNDEF; /* We have a type. */
|
||
|
||
/* Common code for handling struct, union, enum, and/or as-yet-
|
||
unknown-type blocks of info about structured data. `type_code'
|
||
has been set to the proper TYPE_CODE, if we know it. */
|
||
structured_common:
|
||
push_parse_stack ();
|
||
top_stack->blocktype = stBlock;
|
||
|
||
s = new_symbol ((char *) sh->iss);
|
||
SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_TYPEDEF;
|
||
SYMBOL_VALUE (s) = 0;
|
||
add_symbol (s, top_stack->cur_block);
|
||
|
||
/* First count the number of fields and the highest value. */
|
||
nfields = 0;
|
||
max_value = 0;
|
||
for (tsym = sh + 1; tsym->st != stEnd; tsym++)
|
||
{
|
||
if (tsym->st == stMember)
|
||
{
|
||
if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
|
||
/* If the type of the member is Nil (or Void),
|
||
without qualifiers, assume the tag is an
|
||
enumeration. */
|
||
if (tsym->index == indexNil)
|
||
type_code = TYPE_CODE_ENUM;
|
||
else
|
||
{
|
||
ecoff_swap_tir_in (bigend,
|
||
&ax[tsym->index].a_ti,
|
||
&tir);
|
||
if ((tir.bt == btNil || tir.bt == btVoid)
|
||
&& tir.tq0 == tqNil)
|
||
type_code = TYPE_CODE_ENUM;
|
||
}
|
||
nfields++;
|
||
if (tsym->value > max_value)
|
||
max_value = tsym->value;
|
||
}
|
||
else if (tsym->st == stBlock
|
||
|| tsym->st == stUnion
|
||
|| tsym->st == stEnum
|
||
|| tsym->st == stStruct
|
||
|| tsym->st == stParsed)
|
||
{
|
||
if (tsym->sc == scVariant); /*UNIMPLEMENTED*/
|
||
if (tsym->index != 0)
|
||
tsym = ((SYMR *) cur_fdr->isymBase)
|
||
+ tsym->index - 1;
|
||
}
|
||
else
|
||
complain (&block_member_complaint, tsym->st);
|
||
}
|
||
|
||
/* In an stBlock, there is no way to distinguish structs,
|
||
unions, and enums at this point. This is a bug in the
|
||
original design (that has been fixed with the recent
|
||
addition of the stStruct, stUnion, and stEnum symbol
|
||
types.) The way you can tell is if/when you see a variable
|
||
or field of that type. In that case the variable's type
|
||
(in the AUX table) says if the type is struct, union, or
|
||
enum, and points back to the stBlock here. So you can
|
||
patch the tag kind up later - but only if there actually is
|
||
a variable or field of that type.
|
||
|
||
So until we know for sure, we will guess at this point.
|
||
The heuristic is:
|
||
If the first member has index==indexNil or a void type,
|
||
assume we have an enumeration.
|
||
Otherwise, if there is more than one member, and all
|
||
the members have offset 0, assume we have a union.
|
||
Otherwise, assume we have a struct.
|
||
|
||
The heuristic could guess wrong in the case of of an
|
||
enumeration with no members or a union with one (or zero)
|
||
members, or when all except the last field of a struct have
|
||
width zero. These are uncommon and/or illegal situations,
|
||
and in any case guessing wrong probably doesn't matter
|
||
much.
|
||
|
||
But if we later do find out we were wrong, we fixup the tag
|
||
kind. Members of an enumeration must be handled
|
||
differently from struct/union fields, and that is harder to
|
||
patch up, but luckily we shouldn't need to. (If there are
|
||
any enumeration members, we can tell for sure it's an enum
|
||
here.) */
|
||
|
||
if (type_code == TYPE_CODE_UNDEF)
|
||
if (nfields > 1 && max_value == 0)
|
||
type_code = TYPE_CODE_UNION;
|
||
else
|
||
type_code = TYPE_CODE_STRUCT;
|
||
|
||
/* If this type was expected, use its partial definition */
|
||
if (pend)
|
||
t = is_pending_symbol (cur_fdr, sh)->t;
|
||
else
|
||
t = new_type (prepend_tag_kind ((char *) sh->iss,
|
||
type_code));
|
||
|
||
TYPE_CODE (t) = type_code;
|
||
TYPE_LENGTH (t) = sh->value;
|
||
TYPE_NFIELDS (t) = nfields;
|
||
TYPE_FIELDS (t) = f = (struct field *)
|
||
TYPE_ALLOC (t, nfields * sizeof (struct field));
|
||
|
||
if (type_code == TYPE_CODE_ENUM)
|
||
{
|
||
/* This is a non-empty enum. */
|
||
for (tsym = sh + 1; tsym->st == stMember; tsym++)
|
||
{
|
||
struct symbol *enum_sym;
|
||
f->bitpos = tsym->value;
|
||
f->type = t;
|
||
f->name = (char *) tsym->iss;
|
||
f->bitsize = 0;
|
||
|
||
enum_sym = ((struct symbol *)
|
||
obstack_alloc (¤t_objfile->symbol_obstack,
|
||
sizeof (struct symbol)));
|
||
memset ((PTR) enum_sym, 0, sizeof (struct symbol));
|
||
SYMBOL_NAME (enum_sym) = f->name;
|
||
SYMBOL_CLASS (enum_sym) = LOC_CONST;
|
||
SYMBOL_TYPE (enum_sym) = t;
|
||
SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
|
||
SYMBOL_VALUE (enum_sym) = tsym->value;
|
||
add_symbol (enum_sym, top_stack->cur_block);
|
||
|
||
/* Skip the stMembers that we've handled. */
|
||
count++;
|
||
f++;
|
||
}
|
||
}
|
||
SYMBOL_TYPE (s) = t;
|
||
/* make this the current type */
|
||
top_stack->cur_type = t;
|
||
top_stack->cur_field = 0;
|
||
/* Mark that symbol has a type, and say which one */
|
||
sh->value = (long) t;
|
||
break;
|
||
|
||
/* End of local variables shared by struct, union, enum, and
|
||
block (as yet unknown struct/union/enum) processing. */
|
||
}
|
||
|
||
case_stBlock_code:
|
||
/* beginnning of (code) block. Value of symbol
|
||
is the displacement from procedure start */
|
||
push_parse_stack ();
|
||
top_stack->blocktype = stBlock;
|
||
b = new_block (top_stack->maxsyms);
|
||
BLOCK_START (b) = sh->value + top_stack->procadr;
|
||
BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
|
||
top_stack->cur_block = b;
|
||
add_block (b, top_stack->cur_st);
|
||
break;
|
||
|
||
case stEnd: /* end (of anything) */
|
||
if (sh->sc == scInfo)
|
||
{
|
||
/* Finished with type */
|
||
top_stack->cur_type = 0;
|
||
}
|
||
else if (sh->sc == scText
|
||
&& (top_stack->blocktype == stProc
|
||
|| top_stack->blocktype == stStaticProc))
|
||
{
|
||
/* Finished with procedure */
|
||
struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
|
||
struct mips_extra_func_info *e;
|
||
struct block *b;
|
||
int i;
|
||
|
||
BLOCK_END (top_stack->cur_block) += sh->value; /* size */
|
||
|
||
/* Make up special symbol to contain procedure specific info */
|
||
s = new_symbol (MIPS_EFI_SYMBOL_NAME);
|
||
SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_CONST;
|
||
SYMBOL_TYPE (s) = builtin_type_void;
|
||
e = ((struct mips_extra_func_info *)
|
||
obstack_alloc (¤t_objfile->symbol_obstack,
|
||
sizeof (struct mips_extra_func_info)));
|
||
SYMBOL_VALUE (s) = (int) e;
|
||
e->numargs = top_stack->numargs;
|
||
add_symbol (s, top_stack->cur_block);
|
||
|
||
/* Reallocate symbols, saving memory */
|
||
b = shrink_block (top_stack->cur_block, top_stack->cur_st);
|
||
|
||
/* f77 emits proc-level with address bounds==[0,0],
|
||
So look for such child blocks, and patch them. */
|
||
for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
|
||
{
|
||
struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
|
||
if (BLOCK_SUPERBLOCK (b_bad) == b
|
||
&& BLOCK_START (b_bad) == top_stack->procadr
|
||
&& BLOCK_END (b_bad) == top_stack->procadr)
|
||
{
|
||
BLOCK_START (b_bad) = BLOCK_START (b);
|
||
BLOCK_END (b_bad) = BLOCK_END (b);
|
||
}
|
||
}
|
||
}
|
||
else if (sh->sc == scText && top_stack->blocktype == stBlock)
|
||
{
|
||
/* End of (code) block. The value of the symbol
|
||
is the displacement from the procedure`s start
|
||
address of the end of this block. */
|
||
BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
|
||
shrink_block (top_stack->cur_block, top_stack->cur_st);
|
||
}
|
||
else if (sh->sc == scText && top_stack->blocktype == stFile)
|
||
{
|
||
/* End of file. Pop parse stack and ignore. Higher
|
||
level code deals with this. */
|
||
;
|
||
}
|
||
else
|
||
complain (&stEnd_complaint, sh->sc);
|
||
|
||
pop_parse_stack (); /* restore previous lexical context */
|
||
break;
|
||
|
||
case stMember: /* member of struct or union */
|
||
f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
|
||
f->name = (char *) sh->iss;
|
||
f->bitpos = sh->value;
|
||
f->bitsize = 0;
|
||
f->type = parse_type (ax + sh->index, &f->bitsize, bigend);
|
||
break;
|
||
|
||
case stTypedef: /* type definition */
|
||
s = new_symbol ((char *) sh->iss);
|
||
SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_TYPEDEF;
|
||
SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
|
||
add_symbol (s, top_stack->cur_block);
|
||
SYMBOL_TYPE (s) = parse_type (ax + sh->index, 0, bigend);
|
||
sh->value = (long) SYMBOL_TYPE (s);
|
||
break;
|
||
|
||
case stFile: /* file name */
|
||
push_parse_stack ();
|
||
top_stack->blocktype = sh->st;
|
||
break;
|
||
|
||
/* I`ve never seen these for C */
|
||
case stRegReloc:
|
||
break; /* register relocation */
|
||
case stForward:
|
||
break; /* forwarding address */
|
||
case stConstant:
|
||
break; /* constant */
|
||
default:
|
||
complain (&unknown_mips_symtype_complaint, sh->st);
|
||
break;
|
||
}
|
||
sh->st = stParsed;
|
||
return count;
|
||
}
|
||
|
||
/* Parse the type information provided in the raw AX entries for
|
||
the symbol SH. Return the bitfield size in BS, in case.
|
||
We must byte-swap the AX entries before we use them; BIGEND says whether
|
||
they are big-endian or little-endian (from fh->fBigendian). */
|
||
|
||
static struct type *
|
||
parse_type (ax, bs, bigend)
|
||
union aux_ext *ax;
|
||
int *bs;
|
||
int bigend;
|
||
{
|
||
/* Null entries in this map are treated specially */
|
||
static struct type **map_bt[] =
|
||
{
|
||
&builtin_type_void, /* btNil */
|
||
0, /* btAdr */
|
||
&builtin_type_char, /* btChar */
|
||
&builtin_type_unsigned_char,/* btUChar */
|
||
&builtin_type_short, /* btShort */
|
||
&builtin_type_unsigned_short, /* btUShort */
|
||
&builtin_type_int, /* btInt */
|
||
&builtin_type_unsigned_int, /* btUInt */
|
||
&builtin_type_long, /* btLong */
|
||
&builtin_type_unsigned_long,/* btULong */
|
||
&builtin_type_float, /* btFloat */
|
||
&builtin_type_double, /* btDouble */
|
||
0, /* btStruct */
|
||
0, /* btUnion */
|
||
0, /* btEnum */
|
||
0, /* btTypedef */
|
||
0, /* btRange */
|
||
0, /* btSet */
|
||
&builtin_type_complex, /* btComplex */
|
||
&builtin_type_double_complex, /* btDComplex */
|
||
0, /* btIndirect */
|
||
&builtin_type_fixed_dec, /* btFixedDec */
|
||
&builtin_type_float_dec, /* btFloatDec */
|
||
&builtin_type_string, /* btString */
|
||
0, /* btBit */
|
||
0, /* btPicture */
|
||
&builtin_type_void, /* btVoid */
|
||
&builtin_type_long_long, /* btLongLong */
|
||
&builtin_type_unsigned_long_long, /* btULongLong */
|
||
};
|
||
|
||
TIR t[1];
|
||
struct type *tp = 0;
|
||
char *fmt;
|
||
union aux_ext *tax;
|
||
enum type_code type_code;
|
||
|
||
/* Use aux as a type information record, map its basic type. */
|
||
tax = ax;
|
||
ecoff_swap_tir_in (bigend, &tax->a_ti, t);
|
||
if (t->bt > (sizeof (map_bt) / sizeof (*map_bt)))
|
||
{
|
||
complain (&basic_type_complaint, t->bt);
|
||
return builtin_type_int;
|
||
}
|
||
if (map_bt[t->bt])
|
||
{
|
||
tp = *map_bt[t->bt];
|
||
fmt = "%s";
|
||
}
|
||
else
|
||
{
|
||
tp = NULL;
|
||
/* Cannot use builtin types -- build our own */
|
||
switch (t->bt)
|
||
{
|
||
case btAdr:
|
||
tp = lookup_pointer_type (builtin_type_void);
|
||
fmt = "%s";
|
||
break;
|
||
case btStruct:
|
||
type_code = TYPE_CODE_STRUCT;
|
||
fmt = "struct %s";
|
||
break;
|
||
case btUnion:
|
||
type_code = TYPE_CODE_UNION;
|
||
fmt = "union %s";
|
||
break;
|
||
case btEnum:
|
||
type_code = TYPE_CODE_ENUM;
|
||
fmt = "enum %s";
|
||
break;
|
||
case btRange:
|
||
type_code = TYPE_CODE_RANGE;
|
||
fmt = "%s";
|
||
break;
|
||
case btSet:
|
||
type_code = TYPE_CODE_SET;
|
||
fmt = "set %s";
|
||
break;
|
||
case btTypedef:
|
||
default:
|
||
complain (&basic_type_complaint, t->bt);
|
||
return builtin_type_int;
|
||
}
|
||
}
|
||
|
||
/* Skip over any further type qualifiers (FIXME). */
|
||
if (t->continued)
|
||
{
|
||
/* This is the way it would work if the compiler worked */
|
||
TIR t1[1];
|
||
do
|
||
{
|
||
ax++;
|
||
ecoff_swap_tir_in (bigend, ax, t1);
|
||
}
|
||
while (t1->continued);
|
||
}
|
||
|
||
/* Move on to next aux */
|
||
ax++;
|
||
|
||
if (t->fBitfield)
|
||
{
|
||
*bs = AUX_GET_WIDTH (bigend, ax);
|
||
ax++;
|
||
}
|
||
|
||
/* All these types really point to some (common) MIPS type
|
||
definition, and only the type-qualifiers fully identify
|
||
them. We'll make the same effort at sharing. */
|
||
if (t->bt == btIndirect ||
|
||
t->bt == btStruct ||
|
||
t->bt == btUnion ||
|
||
t->bt == btEnum ||
|
||
t->bt == btTypedef ||
|
||
t->bt == btRange ||
|
||
t->bt == btSet)
|
||
{
|
||
char name[256], *pn;
|
||
|
||
/* Try to cross reference this type */
|
||
ax += cross_ref (ax, &tp, type_code, &pn, bigend);
|
||
/* reading .o file ? */
|
||
if (UNSAFE_DATA_ADDR (tp))
|
||
tp = init_type (type_code, 0, 0, (char *) NULL,
|
||
(struct objfile *) NULL);
|
||
/* SOMEONE OUGHT TO FIX DBXREAD TO DROP "STRUCT" */
|
||
sprintf (name, fmt, pn);
|
||
|
||
/* Usually, TYPE_CODE(tp) is already type_code. The main
|
||
exception is if we guessed wrong re struct/union/enum. */
|
||
if (TYPE_CODE (tp) != type_code)
|
||
{
|
||
complain (&bad_tag_guess_complaint, name);
|
||
TYPE_CODE (tp) = type_code;
|
||
}
|
||
if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))
|
||
TYPE_NAME (tp) = obsavestring (name, strlen (name),
|
||
¤t_objfile->type_obstack);
|
||
}
|
||
|
||
/* Deal with range types */
|
||
if (t->bt == btRange)
|
||
{
|
||
TYPE_NFIELDS (tp) = 2;
|
||
TYPE_FIELDS (tp) = ((struct field *)
|
||
TYPE_ALLOC (tp, 2 * sizeof (struct field)));
|
||
TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),
|
||
¤t_objfile->type_obstack);
|
||
TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);
|
||
ax++;
|
||
TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),
|
||
¤t_objfile->type_obstack);
|
||
TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);
|
||
ax++;
|
||
}
|
||
|
||
/* Parse all the type qualifiers now. If there are more
|
||
than 6 the game will continue in the next aux */
|
||
|
||
#define PARSE_TQ(tq) \
|
||
if (t->tq != tqNil) ax += upgrade_type(&tp, t->tq, ax, bigend);
|
||
|
||
again:PARSE_TQ (tq0);
|
||
PARSE_TQ (tq1);
|
||
PARSE_TQ (tq2);
|
||
PARSE_TQ (tq3);
|
||
PARSE_TQ (tq4);
|
||
PARSE_TQ (tq5);
|
||
#undef PARSE_TQ
|
||
|
||
if (t->continued)
|
||
{
|
||
tax++;
|
||
ecoff_swap_tir_in (bigend, &tax->a_ti, t);
|
||
goto again;
|
||
}
|
||
return tp;
|
||
}
|
||
|
||
/* Make up a complex type from a basic one. Type is passed by
|
||
reference in TPP and side-effected as necessary. The type
|
||
qualifier TQ says how to handle the aux symbols at AX for
|
||
the symbol SX we are currently analyzing. BIGEND says whether
|
||
aux symbols are big-endian or little-endian.
|
||
Returns the number of aux symbols we parsed. */
|
||
|
||
static int
|
||
upgrade_type (tpp, tq, ax, bigend)
|
||
struct type **tpp;
|
||
int tq;
|
||
union aux_ext *ax;
|
||
int bigend;
|
||
{
|
||
int off;
|
||
struct type *t;
|
||
|
||
/* Used in array processing */
|
||
int rf, id;
|
||
FDR *fh;
|
||
struct type *range;
|
||
struct type *indx;
|
||
int lower, upper;
|
||
RNDXR rndx;
|
||
|
||
switch (tq)
|
||
{
|
||
case tqPtr:
|
||
t = lookup_pointer_type (*tpp);
|
||
*tpp = t;
|
||
return 0;
|
||
|
||
case tqProc:
|
||
t = lookup_function_type (*tpp);
|
||
*tpp = t;
|
||
return 0;
|
||
|
||
case tqArray:
|
||
off = 0;
|
||
|
||
/* Determine and record the domain type (type of index) */
|
||
ecoff_swap_rndx_in (bigend, ax, &rndx);
|
||
id = rndx.index;
|
||
rf = rndx.rfd;
|
||
if (rf == 0xfff)
|
||
{
|
||
ax++;
|
||
rf = AUX_GET_ISYM (bigend, ax);
|
||
off++;
|
||
}
|
||
fh = get_rfd (cur_fd, rf);
|
||
|
||
indx = parse_type (id + (union aux_ext *) fh->iauxBase,
|
||
(int *) NULL, bigend);
|
||
|
||
/* Get the bounds, and create the array type. */
|
||
ax++;
|
||
lower = AUX_GET_DNLOW (bigend, ax);
|
||
ax++;
|
||
upper = AUX_GET_DNHIGH (bigend, ax);
|
||
ax++;
|
||
rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
|
||
|
||
range = create_range_type ((struct type *) NULL, indx,
|
||
lower, upper);
|
||
|
||
t = create_array_type ((struct type *) NULL, *tpp, range);
|
||
|
||
/* Check whether supplied array element bit size matches
|
||
the known size of the element type. If this complaint
|
||
ends up not happening, we can remove this code. It's
|
||
here because we aren't sure we understand this *&%&$
|
||
symbol format. */
|
||
id = TYPE_LENGTH (TYPE_TARGET_TYPE (t)) << 3; /* bitsize */
|
||
if (id == 0)
|
||
{
|
||
/* Most likely an undefined type */
|
||
id = rf;
|
||
TYPE_LENGTH (TYPE_TARGET_TYPE (t)) = id >> 3;
|
||
}
|
||
if (id != rf)
|
||
complain (&array_bitsize_complaint, rf);
|
||
|
||
*tpp = t;
|
||
return 4 + off;
|
||
|
||
case tqVol:
|
||
/* Volatile -- currently ignored */
|
||
return 0;
|
||
|
||
case tqConst:
|
||
/* Const -- currently ignored */
|
||
return 0;
|
||
|
||
default:
|
||
complain (&unknown_type_qual_complaint, tq);
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
|
||
/* Parse a procedure descriptor record PR. Note that the procedure
|
||
is parsed _after_ the local symbols, now we just insert the extra
|
||
information we need into a MIPS_EFI_SYMBOL_NAME symbol that has already
|
||
been placed in the procedure's main block. Note also that images that
|
||
have been partially stripped (ld -x) have been deprived
|
||
of local symbols, and we have to cope with them here.
|
||
The procedure's code ends at BOUND */
|
||
|
||
static void
|
||
parse_procedure (pr, bound, have_stabs)
|
||
PDR *pr;
|
||
int bound;
|
||
int have_stabs;
|
||
{
|
||
struct symbol *s, *i;
|
||
SYMR *sh = (SYMR *) pr->isym;
|
||
struct block *b;
|
||
struct mips_extra_func_info *e;
|
||
char *sh_name;
|
||
|
||
/* Static procedure at address pr->adr. Sigh. */
|
||
if (sh == (SYMR *) - 1)
|
||
{
|
||
complain (&pdr_static_symbol_complaint, pr->adr);
|
||
return;
|
||
}
|
||
sh_name = (char *) sh->iss;
|
||
if (have_stabs)
|
||
s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
|
||
else
|
||
s = mylookup_symbol (sh_name, top_stack->cur_block,
|
||
VAR_NAMESPACE, LOC_BLOCK);
|
||
|
||
if (s != 0)
|
||
{
|
||
b = SYMBOL_BLOCK_VALUE (s);
|
||
}
|
||
else
|
||
{
|
||
complain (&pdr_for_nonsymbol_complaint, sh_name);
|
||
#if 1
|
||
return;
|
||
#else
|
||
/* FIXME -- delete. We can't do symbol allocation now; it's all done. */
|
||
s = new_symbol (sh_name);
|
||
SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_BLOCK;
|
||
/* Donno its type, hope int is ok */
|
||
SYMBOL_TYPE (s) = lookup_function_type (builtin_type_int);
|
||
add_symbol (s, top_stack->cur_block);
|
||
/* Wont have symbols for this one */
|
||
b = new_block (2);
|
||
SYMBOL_BLOCK_VALUE (s) = b;
|
||
BLOCK_FUNCTION (b) = s;
|
||
BLOCK_START (b) = pr->adr;
|
||
BLOCK_END (b) = bound;
|
||
BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
|
||
add_block (b, top_stack->cur_st);
|
||
#endif
|
||
}
|
||
|
||
i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);
|
||
|
||
if (i)
|
||
{
|
||
e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);
|
||
e->pdr = *pr;
|
||
e->pdr.isym = (long) s;
|
||
}
|
||
}
|
||
|
||
/* Parse the external symbol ES. Just call parse_symbol() after
|
||
making sure we know where the aux are for it. For procedures,
|
||
parsing of the PDRs has already provided all the needed
|
||
information, we only parse them if SKIP_PROCEDURES is false,
|
||
and only if this causes no symbol duplication.
|
||
BIGEND says whether aux entries are big-endian or little-endian.
|
||
|
||
This routine clobbers top_stack->cur_block and ->cur_st. */
|
||
|
||
static void
|
||
parse_external (es, skip_procedures, bigend)
|
||
EXTR *es;
|
||
int skip_procedures;
|
||
int bigend;
|
||
{
|
||
union aux_ext *ax;
|
||
|
||
if (es->ifd != ifdNil)
|
||
{
|
||
cur_fd = es->ifd;
|
||
cur_fdr = (FDR *) (cur_hdr->cbFdOffset) + cur_fd;
|
||
ax = (union aux_ext *) cur_fdr->iauxBase;
|
||
}
|
||
else
|
||
{
|
||
cur_fdr = (FDR *) (cur_hdr->cbFdOffset);
|
||
ax = 0;
|
||
}
|
||
|
||
/* Reading .o files */
|
||
if (es->asym.sc == scUndefined || es->asym.sc == scNil)
|
||
{
|
||
char *what;
|
||
switch (es->asym.st)
|
||
{
|
||
case stStaticProc:
|
||
case stProc:
|
||
what = "procedure";
|
||
n_undef_procs++;
|
||
break;
|
||
case stGlobal:
|
||
what = "variable";
|
||
n_undef_vars++;
|
||
break;
|
||
case stLabel:
|
||
what = "label";
|
||
n_undef_labels++;
|
||
break;
|
||
default:
|
||
what = "symbol";
|
||
break;
|
||
}
|
||
n_undef_symbols++;
|
||
/* FIXME: Turn this into a complaint? */
|
||
if (info_verbose)
|
||
printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
|
||
what, es->asym.iss, fdr_name ((char *) cur_fdr->rss));
|
||
return;
|
||
}
|
||
|
||
switch (es->asym.st)
|
||
{
|
||
case stProc:
|
||
/* If we have full symbols we do not need more */
|
||
if (skip_procedures)
|
||
return;
|
||
if (mylookup_symbol ((char *) es->asym.iss, top_stack->cur_block,
|
||
VAR_NAMESPACE, LOC_BLOCK))
|
||
break;
|
||
/* fall through */
|
||
case stGlobal:
|
||
case stLabel:
|
||
/*
|
||
* Note that the case of a symbol with indexNil
|
||
* must be handled anyways by parse_symbol().
|
||
*/
|
||
parse_symbol (&es->asym, ax, bigend);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Parse the line number info for file descriptor FH into
|
||
GDB's linetable LT. MIPS' encoding requires a little bit
|
||
of magic to get things out. Note also that MIPS' line
|
||
numbers can go back and forth, apparently we can live
|
||
with that and do not need to reorder our linetables */
|
||
|
||
static void
|
||
parse_lines (fh, lt)
|
||
FDR *fh;
|
||
struct linetable *lt;
|
||
{
|
||
unsigned char *base = (unsigned char *) fh->cbLineOffset;
|
||
int j, k;
|
||
int delta, count, lineno = 0;
|
||
PDR *pr;
|
||
|
||
if (base == 0)
|
||
return;
|
||
|
||
/* Scan by procedure descriptors */
|
||
j = 0, k = 0;
|
||
for (pr = (PDR *) IPDFIRST (cur_hdr, fh); j < fh->cpd; j++, pr++)
|
||
{
|
||
int l, halt;
|
||
|
||
/* No code for this one */
|
||
if (pr->iline == ilineNil ||
|
||
pr->lnLow == -1 || pr->lnHigh == -1)
|
||
continue;
|
||
/*
|
||
* Aurgh! To know where to stop expanding we
|
||
* must look-ahead.
|
||
*/
|
||
for (l = 1; l < (fh->cpd - j); l++)
|
||
if (pr[l].iline != -1)
|
||
break;
|
||
if (l == (fh->cpd - j))
|
||
halt = fh->cline;
|
||
else
|
||
halt = pr[l].iline;
|
||
/*
|
||
* When procedures are moved around the linenumbers
|
||
* are attributed to the next procedure up
|
||
*/
|
||
if (pr->iline >= halt)
|
||
continue;
|
||
|
||
base = (unsigned char *) pr->cbLineOffset;
|
||
l = pr->adr >> 2; /* in words */
|
||
halt += (pr->adr >> 2) - pr->iline;
|
||
for (lineno = pr->lnLow; l < halt;)
|
||
{
|
||
count = *base & 0x0f;
|
||
delta = *base++ >> 4;
|
||
if (delta >= 8)
|
||
delta -= 16;
|
||
if (delta == -8)
|
||
{
|
||
delta = (base[0] << 8) | base[1];
|
||
if (delta >= 0x8000)
|
||
delta -= 0x10000;
|
||
base += 2;
|
||
}
|
||
lineno += delta; /* first delta is 0 */
|
||
k = add_line (lt, lineno, l, k);
|
||
l += count + 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Master parsing procedure for first-pass reading of file symbols
|
||
into a partial_symtab.
|
||
|
||
Parses the symtab described by the global symbolic header CUR_HDR.
|
||
END_OF_TEXT_SEG gives the address just after the text segment for
|
||
the symtab we are reading. */
|
||
|
||
static void
|
||
parse_partial_symbols (end_of_text_seg, objfile, section_offsets)
|
||
int end_of_text_seg;
|
||
struct objfile *objfile;
|
||
struct section_offsets *section_offsets;
|
||
{
|
||
int f_idx, s_idx;
|
||
HDRR *hdr = cur_hdr;
|
||
/* Running pointers */
|
||
FDR *fh;
|
||
register EXTR *esh;
|
||
register SYMR *sh;
|
||
struct partial_symtab *pst;
|
||
|
||
int past_first_source_file = 0;
|
||
|
||
/* List of current psymtab's include files */
|
||
char **psymtab_include_list;
|
||
int includes_allocated;
|
||
int includes_used;
|
||
EXTR **extern_tab;
|
||
struct pst_map *fdr_to_pst;
|
||
/* Index within current psymtab dependency list */
|
||
struct partial_symtab **dependency_list;
|
||
int dependencies_used, dependencies_allocated;
|
||
struct cleanup *old_chain;
|
||
char *name;
|
||
|
||
extern_tab = (EXTR **) obstack_alloc (&objfile->psymbol_obstack,
|
||
sizeof (EXTR *) * hdr->iextMax);
|
||
|
||
includes_allocated = 30;
|
||
includes_used = 0;
|
||
psymtab_include_list = (char **) alloca (includes_allocated *
|
||
sizeof (char *));
|
||
next_symbol_text_func = mips_next_symbol_text;
|
||
|
||
dependencies_allocated = 30;
|
||
dependencies_used = 0;
|
||
dependency_list =
|
||
(struct partial_symtab **) alloca (dependencies_allocated *
|
||
sizeof (struct partial_symtab *));
|
||
|
||
last_source_file = NULL;
|
||
|
||
/*
|
||
* Big plan:
|
||
*
|
||
* Only parse the Local and External symbols, and the Relative FDR.
|
||
* Fixup enough of the loader symtab to be able to use it.
|
||
* Allocate space only for the file's portions we need to
|
||
* look at. (XXX)
|
||
*/
|
||
|
||
max_gdbinfo = 0;
|
||
max_glevel = MIN_GLEVEL;
|
||
|
||
/* Allocate the map FDR -> PST.
|
||
Minor hack: -O3 images might claim some global data belongs
|
||
to FDR -1. We`ll go along with that */
|
||
fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);
|
||
old_chain = make_cleanup (free, fdr_to_pst);
|
||
fdr_to_pst++;
|
||
{
|
||
struct partial_symtab *pst = new_psymtab ("", objfile);
|
||
fdr_to_pst[-1].pst = pst;
|
||
FDR_IDX (pst) = -1;
|
||
}
|
||
|
||
/* Pass 1 over external syms: Presize and partition the list */
|
||
for (s_idx = 0; s_idx < hdr->iextMax; s_idx++)
|
||
{
|
||
esh = (EXTR *) (hdr->cbExtOffset) + s_idx;
|
||
fdr_to_pst[esh->ifd].n_globals++;
|
||
}
|
||
|
||
/* Pass 1.5 over files: partition out global symbol space */
|
||
s_idx = 0;
|
||
for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
|
||
{
|
||
fdr_to_pst[f_idx].globals_offset = s_idx;
|
||
s_idx += fdr_to_pst[f_idx].n_globals;
|
||
fdr_to_pst[f_idx].n_globals = 0;
|
||
}
|
||
|
||
/* Pass 2 over external syms: fill in external symbols */
|
||
for (s_idx = 0; s_idx < hdr->iextMax; s_idx++)
|
||
{
|
||
enum minimal_symbol_type ms_type = mst_text;
|
||
esh = (EXTR *) (hdr->cbExtOffset) + s_idx;
|
||
|
||
extern_tab[fdr_to_pst[esh->ifd].globals_offset
|
||
+ fdr_to_pst[esh->ifd].n_globals++] = esh;
|
||
|
||
if (esh->asym.sc == scUndefined || esh->asym.sc == scNil)
|
||
continue;
|
||
|
||
switch (esh->asym.st)
|
||
{
|
||
case stProc:
|
||
break;
|
||
case stGlobal:
|
||
ms_type = mst_data;
|
||
break;
|
||
case stLabel:
|
||
break;
|
||
default:
|
||
ms_type = mst_unknown;
|
||
complain (&unknown_ext_complaint, esh->asym.iss);
|
||
}
|
||
name = (char *) esh->asym.iss;
|
||
prim_record_minimal_symbol (name, esh->asym.value, ms_type);
|
||
}
|
||
|
||
/* Pass 3 over files, over local syms: fill in static symbols */
|
||
for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
|
||
{
|
||
struct partial_symtab *save_pst;
|
||
EXTR **ext_ptr;
|
||
|
||
cur_fdr = fh = f_idx + (FDR *) (cur_hdr->cbFdOffset);
|
||
|
||
if (fh->csym == 0)
|
||
{
|
||
fdr_to_pst[f_idx].pst = NULL;
|
||
continue;
|
||
}
|
||
pst = start_psymtab_common (objfile, section_offsets, (char *) fh->rss,
|
||
fh->cpd ? fh->adr : 0,
|
||
objfile->global_psymbols.next,
|
||
objfile->static_psymbols.next);
|
||
pst->read_symtab_private = ((char *)
|
||
obstack_alloc (&objfile->psymbol_obstack,
|
||
sizeof (struct symloc)));
|
||
|
||
save_pst = pst;
|
||
/* Make everything point to everything. */
|
||
FDR_IDX (pst) = f_idx;
|
||
fdr_to_pst[f_idx].pst = pst;
|
||
fh->ioptBase = (int) pst;
|
||
|
||
CUR_HDR (pst) = cur_hdr;
|
||
|
||
/* The way to turn this into a symtab is to call... */
|
||
pst->read_symtab = mipscoff_psymtab_to_symtab;
|
||
|
||
pst->texthigh = pst->textlow;
|
||
|
||
/* For stabs-in-ecoff files, the second symbol must be @stab.
|
||
This symbol is emitted by mips-tfile to signal
|
||
that the current object file uses encapsulated stabs
|
||
instead of mips ecoff for local symbols.
|
||
(It is the second symbol because the first symbol is
|
||
the stFile used to signal the start of a file). */
|
||
if (fh->csym >= 2
|
||
&& STREQ ((char *) (((SYMR *) fh->isymBase)[1].iss), stabs_symbol))
|
||
{
|
||
processing_gcc_compilation = 2;
|
||
for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
|
||
{
|
||
int type_code;
|
||
char *namestring;
|
||
sh = cur_sdx + (SYMR *) fh->isymBase;
|
||
type_code = MIPS_UNMARK_STAB (sh->index);
|
||
if (!MIPS_IS_STAB (sh))
|
||
{
|
||
if (sh->st == stProc || sh->st == stStaticProc)
|
||
{
|
||
long procaddr = sh->value;
|
||
sh = (AUX_GET_ISYM (fh->fBigendian,
|
||
(sh->index
|
||
+ (union aux_ext *) (fh->iauxBase)))
|
||
+ (SYMR *) fh->isymBase - 1);
|
||
if (sh->st == stEnd)
|
||
{
|
||
long high = procaddr + sh->value;
|
||
if (high > pst->texthigh)
|
||
pst->texthigh = high;
|
||
}
|
||
}
|
||
continue;
|
||
}
|
||
#define SET_NAMESTRING() namestring = (char*)sh->iss
|
||
#define CUR_SYMBOL_TYPE type_code
|
||
#define CUR_SYMBOL_VALUE sh->value
|
||
#define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
|
||
pst = save_pst
|
||
#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
|
||
#define HANDLE_RBRAC(val) \
|
||
if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
|
||
#include "partial-stab.h"
|
||
}
|
||
}
|
||
else
|
||
{
|
||
processing_gcc_compilation = 0;
|
||
for (cur_sdx = 0; cur_sdx < fh->csym;)
|
||
{
|
||
char *name;
|
||
enum address_class class;
|
||
sh = cur_sdx + (SYMR *) fh->isymBase;
|
||
|
||
if (MIPS_IS_STAB (sh))
|
||
{
|
||
cur_sdx++;
|
||
continue;
|
||
}
|
||
|
||
if (sh->sc == scUndefined || sh->sc == scNil ||
|
||
sh->index == 0xfffff)
|
||
{
|
||
/* FIXME, premature? */
|
||
cur_sdx++;
|
||
continue;
|
||
}
|
||
|
||
name = (char *) (sh->iss);
|
||
|
||
switch (sh->st)
|
||
{
|
||
long high;
|
||
long procaddr;
|
||
int new_sdx;
|
||
|
||
case stProc: /* Asm labels apparently */
|
||
case stStaticProc: /* Function */
|
||
ADD_PSYMBOL_TO_LIST (name, strlen (name),
|
||
VAR_NAMESPACE, LOC_BLOCK,
|
||
objfile->static_psymbols, sh->value,
|
||
psymtab_language, objfile);
|
||
/* Skip over procedure to next one. */
|
||
if (sh->index >= hdr->iauxMax)
|
||
{
|
||
/* Should not happen, but does when cross-compiling
|
||
with the MIPS compiler. FIXME -- pull later. */
|
||
complain (&index_complaint, name);
|
||
new_sdx = cur_sdx + 1; /* Don't skip at all */
|
||
}
|
||
else
|
||
new_sdx = AUX_GET_ISYM (fh->fBigendian,
|
||
sh->index + (union aux_ext *) fh->iauxBase);
|
||
procaddr = sh->value;
|
||
|
||
if (new_sdx <= cur_sdx)
|
||
{
|
||
/* This should not happen either... FIXME. */
|
||
complain (&aux_index_complaint, name);
|
||
new_sdx = cur_sdx + 1; /* Don't skip backward */
|
||
}
|
||
|
||
cur_sdx = new_sdx;
|
||
sh = cur_sdx + (SYMR *) fh->isymBase - 1;
|
||
if (sh->st != stEnd)
|
||
continue;
|
||
high = procaddr + sh->value;
|
||
if (high > pst->texthigh)
|
||
pst->texthigh = high;
|
||
continue;
|
||
|
||
case stStatic: /* Variable */
|
||
class = LOC_STATIC;
|
||
break;
|
||
|
||
case stTypedef:/* Typedef */
|
||
class = LOC_TYPEDEF;
|
||
break;
|
||
|
||
case stConstant: /* Constant decl */
|
||
class = LOC_CONST;
|
||
break;
|
||
|
||
case stUnion:
|
||
case stStruct:
|
||
case stEnum:
|
||
case stBlock: /* { }, str, un, enum*/
|
||
if (sh->sc == scInfo)
|
||
{
|
||
ADD_PSYMBOL_TO_LIST (name, strlen (name),
|
||
STRUCT_NAMESPACE, LOC_TYPEDEF,
|
||
objfile->static_psymbols,
|
||
sh->value,
|
||
psymtab_language, objfile);
|
||
}
|
||
/* Skip over the block */
|
||
new_sdx = sh->index;
|
||
if (new_sdx <= cur_sdx)
|
||
{
|
||
/* This happens with the Ultrix kernel. */
|
||
complain (&block_index_complaint, name);
|
||
new_sdx = cur_sdx + 1; /* Don't skip backward */
|
||
}
|
||
cur_sdx = new_sdx;
|
||
continue;
|
||
|
||
case stFile: /* File headers */
|
||
case stLabel: /* Labels */
|
||
case stEnd: /* Ends of files */
|
||
goto skip;
|
||
|
||
case stLocal: /* Local variables */
|
||
/* Normally these are skipped because we skip over
|
||
all blocks we see. However, these can occur
|
||
as visible symbols in a .h file that contains code. */
|
||
goto skip;
|
||
|
||
default:
|
||
/* Both complaints are valid: one gives symbol name,
|
||
the other the offending symbol type. */
|
||
complain (&unknown_sym_complaint, sh->iss);
|
||
complain (&unknown_st_complaint, sh->st);
|
||
cur_sdx++;
|
||
continue;
|
||
}
|
||
/* Use this gdb symbol */
|
||
ADD_PSYMBOL_TO_LIST (name, strlen (name),
|
||
VAR_NAMESPACE, class,
|
||
objfile->static_psymbols, sh->value,
|
||
psymtab_language, objfile);
|
||
skip:
|
||
cur_sdx++; /* Go to next file symbol */
|
||
}
|
||
|
||
/* Now do enter the external symbols. */
|
||
ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
|
||
cur_sdx = fdr_to_pst[f_idx].n_globals;
|
||
PST_PRIVATE (save_pst)->extern_count = cur_sdx;
|
||
PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
|
||
for (; --cur_sdx >= 0; ext_ptr++)
|
||
{
|
||
register struct partial_symbol *psym;
|
||
enum address_class class;
|
||
|
||
if ((*ext_ptr)->ifd != f_idx)
|
||
abort ();
|
||
sh = &(*ext_ptr)->asym;
|
||
switch (sh->st)
|
||
{
|
||
case stProc:
|
||
class = LOC_BLOCK;
|
||
break;
|
||
case stLabel:
|
||
class = LOC_LABEL;
|
||
break;
|
||
default:
|
||
complain (&unknown_ext_complaint, sh->iss);
|
||
/* Fall through, pretend it's global. */
|
||
case stGlobal:
|
||
class = LOC_STATIC;
|
||
break;
|
||
}
|
||
if (objfile->global_psymbols.next >=
|
||
objfile->global_psymbols.list + objfile->global_psymbols.size)
|
||
extend_psymbol_list (&objfile->global_psymbols, objfile);
|
||
psym = objfile->global_psymbols.next++;
|
||
SYMBOL_NAME (psym) = (char *) sh->iss;
|
||
SYMBOL_NAMESPACE (psym) = VAR_NAMESPACE;
|
||
SYMBOL_CLASS (psym) = class;
|
||
SYMBOL_VALUE_ADDRESS (psym) = (CORE_ADDR) sh->value;
|
||
}
|
||
}
|
||
|
||
end_psymtab (save_pst, psymtab_include_list, includes_used,
|
||
-1, save_pst->texthigh,
|
||
dependency_list, dependencies_used);
|
||
if (objfile->ei.entry_point >= save_pst->textlow &&
|
||
objfile->ei.entry_point < save_pst->texthigh)
|
||
{
|
||
objfile->ei.entry_file_lowpc = save_pst->textlow;
|
||
objfile->ei.entry_file_highpc = save_pst->texthigh;
|
||
}
|
||
}
|
||
|
||
/* Mark the last code address, and remember it for later */
|
||
hdr->cbDnOffset = end_of_text_seg;
|
||
|
||
/* Now scan the FDRs for dependencies */
|
||
for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
|
||
{
|
||
int s_id0 = 0;
|
||
fh = f_idx + (FDR *) (cur_hdr->cbFdOffset);
|
||
pst = fdr_to_pst[f_idx].pst;
|
||
|
||
/* This should catch stabs-in-ecoff. */
|
||
if (fh->crfd <= 1)
|
||
continue;
|
||
|
||
if (fh->cpd == 0)
|
||
{ /* If there are no functions defined here ... */
|
||
/* ...then presumably a .h file: drop reverse depends .h->.c */
|
||
for (; s_id0 < fh->crfd; s_id0++)
|
||
{
|
||
RFDT *rh = (RFDT *) (fh->rfdBase) + s_id0;
|
||
if (*rh == f_idx)
|
||
{
|
||
s_id0++; /* Skip self-dependency */
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
pst->number_of_dependencies = fh->crfd - s_id0;
|
||
pst->dependencies =
|
||
((struct partial_symtab **)
|
||
obstack_alloc (&objfile->psymbol_obstack,
|
||
(pst->number_of_dependencies
|
||
* sizeof (struct partial_symtab *))));
|
||
for (s_idx = s_id0; s_idx < fh->crfd; s_idx++)
|
||
{
|
||
RFDT *rh = (RFDT *) (fh->rfdBase) + s_idx;
|
||
if (*rh < 0 || *rh >= hdr->ifdMax)
|
||
complain (&bad_file_number_complaint, *rh);
|
||
else
|
||
pst->dependencies[s_idx - s_id0] = fdr_to_pst[*rh].pst;
|
||
}
|
||
}
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
|
||
#if 0
|
||
/* Do the initial analisys of the F_IDX-th file descriptor.
|
||
Allocates a partial symtab for it, and builds the list
|
||
of dependent files by recursion. LEV says at which level
|
||
of recursion we are called (to pretty up debug traces) */
|
||
|
||
static struct partial_symtab *
|
||
parse_fdr (f_idx, lev, objfile)
|
||
int f_idx;
|
||
int lev;
|
||
struct objfile *objfile;
|
||
{
|
||
register FDR *fh;
|
||
register struct partial_symtab *pst;
|
||
int s_idx, s_id0;
|
||
|
||
fh = (FDR *) (cur_hdr->cbFdOffset) + f_idx;
|
||
|
||
/* Use this to indicate into which symtab this file was parsed */
|
||
if (fh->ioptBase)
|
||
return (struct partial_symtab *) fh->ioptBase;
|
||
|
||
/* Debuggability level */
|
||
if (compare_glevel (max_glevel, fh->glevel) < 0)
|
||
max_glevel = fh->glevel;
|
||
|
||
/* Make a new partial_symtab */
|
||
pst = new_psymtab (fh->rss, objfile);
|
||
if (fh->cpd == 0)
|
||
{
|
||
pst->textlow = 0;
|
||
pst->texthigh = 0;
|
||
}
|
||
else
|
||
{
|
||
pst->textlow = fh->adr;
|
||
pst->texthigh = fh->cpd; /* To be fixed later */
|
||
}
|
||
|
||
/* Make everything point to everything. */
|
||
FDR_IDX (pst) = f_idx;
|
||
fdr_to_pst[f_idx].pst = pst;
|
||
fh->ioptBase = (int) pst;
|
||
|
||
/* Analyze its dependencies */
|
||
if (fh->crfd <= 1)
|
||
return pst;
|
||
|
||
s_id0 = 0;
|
||
if (fh->cpd == 0)
|
||
{ /* If there are no functions defined here ... */
|
||
/* ...then presumably a .h file: drop reverse depends .h->.c */
|
||
for (; s_id0 < fh->crfd; s_id0++)
|
||
{
|
||
RFDT *rh = (RFDT *) (fh->rfdBase) + s_id0;
|
||
if (*rh == f_idx)
|
||
{
|
||
s_id0++; /* Skip self-dependency */
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
pst->number_of_dependencies = fh->crfd - s_id0;
|
||
pst->dependencies = ((struct partial_symtab **)
|
||
obstack_alloc (&objfile->psymbol_obstack,
|
||
(pst->number_of_dependencies
|
||
* sizeof (struct partial_symtab *))));
|
||
for (s_idx = s_id0; s_idx < fh->crfd; s_idx++)
|
||
{
|
||
RFDT *rh = (RFDT *) (fh->rfdBase) + s_idx;
|
||
|
||
pst->dependencies[s_idx - s_id0] = parse_fdr (*rh, lev + 1, objfile);
|
||
}
|
||
|
||
return pst;
|
||
}
|
||
|
||
#endif
|
||
|
||
static char *
|
||
mips_next_symbol_text ()
|
||
{
|
||
cur_sdx++;
|
||
return (char *) ((SYMR *) cur_fdr->isymBase)[cur_sdx].iss;
|
||
}
|
||
|
||
/* Ancillary function to psymtab_to_symtab(). Does all the work
|
||
for turning the partial symtab PST into a symtab, recurring
|
||
first on all dependent psymtabs. The argument FILENAME is
|
||
only passed so we can see in debug stack traces what file
|
||
is being read.
|
||
|
||
This function has a split personality, based on whether the
|
||
symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
|
||
The flow of control and even the memory allocation differs. FIXME. */
|
||
|
||
static void
|
||
psymtab_to_symtab_1 (pst, filename)
|
||
struct partial_symtab *pst;
|
||
char *filename;
|
||
{
|
||
int i;
|
||
struct symtab *st;
|
||
FDR *fh;
|
||
struct linetable *lines;
|
||
int bound;
|
||
|
||
if (pst->readin)
|
||
return;
|
||
pst->readin = 1;
|
||
|
||
/* Read in all partial symbtabs on which this one is dependent.
|
||
NOTE that we do have circular dependencies, sigh. We solved
|
||
that by setting pst->readin before this point. */
|
||
|
||
for (i = 0; i < pst->number_of_dependencies; i++)
|
||
if (!pst->dependencies[i]->readin)
|
||
{
|
||
/* Inform about additional files to be read in. */
|
||
if (info_verbose)
|
||
{
|
||
fputs_filtered (" ", stdout);
|
||
wrap_here ("");
|
||
fputs_filtered ("and ", stdout);
|
||
wrap_here ("");
|
||
printf_filtered ("%s...",
|
||
pst->dependencies[i]->filename);
|
||
wrap_here (""); /* Flush output */
|
||
fflush (stdout);
|
||
}
|
||
/* We only pass the filename for debug purposes */
|
||
psymtab_to_symtab_1 (pst->dependencies[i],
|
||
pst->dependencies[i]->filename);
|
||
}
|
||
|
||
/* Now read the symbols for this symtab */
|
||
|
||
current_objfile = pst->objfile;
|
||
cur_fd = FDR_IDX (pst);
|
||
fh = (cur_fd == -1) ? 0 : (FDR *) (cur_hdr->cbFdOffset) + FDR_IDX (pst);
|
||
cur_fdr = fh;
|
||
|
||
/* BOUND is the highest core address of this file's procedures */
|
||
bound = (cur_fd == cur_hdr->ifdMax - 1) ?
|
||
cur_hdr->cbDnOffset :
|
||
fh[1].adr;
|
||
|
||
/* See comment in parse_partial_symbols about the @stabs sentinel. */
|
||
if (fh && fh->csym >= 2
|
||
&& STREQ ((char *) (((SYMR *) fh->isymBase)[1].iss), stabs_symbol))
|
||
{
|
||
|
||
/*
|
||
* This symbol table contains stabs-in-ecoff entries.
|
||
*/
|
||
|
||
PDR *pr;
|
||
|
||
/* We indicate that this is a GCC compilation so that certain features
|
||
will be enabled in stabsread/dbxread. */
|
||
processing_gcc_compilation = 2;
|
||
/* Parse local symbols first */
|
||
|
||
if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
|
||
{
|
||
current_objfile = NULL;
|
||
return;
|
||
}
|
||
for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
|
||
{
|
||
register SYMR *sh = cur_sdx + (SYMR *) fh->isymBase;
|
||
char *name = (char *) sh->iss;
|
||
CORE_ADDR valu = sh->value;
|
||
if (MIPS_IS_STAB (sh))
|
||
{
|
||
int type_code = MIPS_UNMARK_STAB (sh->index);
|
||
process_one_symbol (type_code, 0, valu, name,
|
||
pst->section_offsets, pst->objfile);
|
||
if (type_code == N_FUN)
|
||
{
|
||
/* Make up special symbol to contain
|
||
procedure specific info */
|
||
struct mips_extra_func_info *e =
|
||
(struct mips_extra_func_info *)
|
||
obstack_alloc (¤t_objfile->symbol_obstack,
|
||
sizeof (struct mips_extra_func_info));
|
||
struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);
|
||
SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_CONST;
|
||
SYMBOL_TYPE (s) = builtin_type_void;
|
||
SYMBOL_VALUE (s) = (int) e;
|
||
add_symbol_to_list (s, &local_symbols);
|
||
}
|
||
}
|
||
else if (sh->st == stLabel && sh->index != indexNil)
|
||
{
|
||
/* Handle encoded stab line number. */
|
||
record_line (current_subfile, sh->index, valu);
|
||
}
|
||
else
|
||
complain (&stab_unknown_complaint, sh->iss);
|
||
}
|
||
st = end_symtab (pst->texthigh, 0, 0, pst->objfile);
|
||
end_stabs ();
|
||
|
||
/* Sort the symbol table now, we are done adding symbols to it.
|
||
We must do this before parse_procedure calls lookup_symbol. */
|
||
sort_symtab_syms (st);
|
||
|
||
/* This may not be necessary for stabs symtabs. FIXME. */
|
||
sort_blocks (st);
|
||
|
||
/* Fill in procedure info next. We need to look-ahead to
|
||
find out where each procedure's code ends. */
|
||
|
||
for (i = 0; i <= fh->cpd - 1; i++)
|
||
{
|
||
pr = (PDR *) (IPDFIRST (cur_hdr, fh)) + i;
|
||
parse_procedure (pr, i < fh->cpd - 1 ? pr[1].adr : bound, 1);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
|
||
/*
|
||
* This symbol table contains ordinary ecoff entries.
|
||
*/
|
||
|
||
/* FIXME: doesn't use pst->section_offsets. */
|
||
|
||
int f_max;
|
||
int maxlines;
|
||
EXTR **ext_ptr;
|
||
|
||
processing_gcc_compilation = 0;
|
||
|
||
/* How many symbols will we need */
|
||
/* FIXME, this does not count enum values. */
|
||
f_max = pst->n_global_syms + pst->n_static_syms;
|
||
if (fh == 0)
|
||
{
|
||
maxlines = 0;
|
||
st = new_symtab ("unknown", f_max, 0, pst->objfile);
|
||
}
|
||
else
|
||
{
|
||
f_max += fh->csym + fh->cpd;
|
||
maxlines = 2 * fh->cline;
|
||
st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);
|
||
}
|
||
|
||
lines = LINETABLE (st);
|
||
pending_list = (struct mips_pending **) cur_hdr->cbOptOffset;
|
||
if (pending_list == 0)
|
||
{
|
||
pending_list = (struct mips_pending **)
|
||
xzalloc (cur_hdr->ifdMax * sizeof (struct mips_pending *));
|
||
cur_hdr->cbOptOffset = (int) pending_list;
|
||
}
|
||
|
||
/* Get a new lexical context */
|
||
|
||
push_parse_stack ();
|
||
top_stack->cur_st = st;
|
||
top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),
|
||
STATIC_BLOCK);
|
||
BLOCK_START (top_stack->cur_block) = fh ? fh->adr : 0;
|
||
BLOCK_END (top_stack->cur_block) = 0;
|
||
top_stack->blocktype = stFile;
|
||
top_stack->maxsyms = 2 * f_max;
|
||
top_stack->cur_type = 0;
|
||
top_stack->procadr = 0;
|
||
top_stack->numargs = 0;
|
||
|
||
if (fh)
|
||
{
|
||
SYMR *sh;
|
||
PDR *pr;
|
||
|
||
/* Parse local symbols first */
|
||
|
||
for (cur_sdx = 0; cur_sdx < fh->csym;)
|
||
{
|
||
sh = (SYMR *) (fh->isymBase) + cur_sdx;
|
||
cur_sdx += parse_symbol (sh, (union aux_ext *) fh->iauxBase,
|
||
fh->fBigendian);
|
||
}
|
||
|
||
/* Linenumbers. At the end, check if we can save memory */
|
||
|
||
parse_lines (fh, lines);
|
||
if (lines->nitems < fh->cline)
|
||
lines = shrink_linetable (lines);
|
||
|
||
/* Fill in procedure info next. We need to look-ahead to
|
||
find out where each procedure's code ends. */
|
||
|
||
for (i = 0; i <= fh->cpd - 1; i++)
|
||
{
|
||
pr = (PDR *) (IPDFIRST (cur_hdr, fh)) + i;
|
||
parse_procedure (pr, i < fh->cpd - 1 ? pr[1].adr : bound, 0);
|
||
}
|
||
}
|
||
|
||
LINETABLE (st) = lines;
|
||
|
||
/* .. and our share of externals.
|
||
XXX use the global list to speed up things here. how?
|
||
FIXME, Maybe quit once we have found the right number of ext's? */
|
||
top_stack->cur_st = st;
|
||
top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
|
||
GLOBAL_BLOCK);
|
||
top_stack->blocktype = stFile;
|
||
top_stack->maxsyms =
|
||
cur_hdr->isymMax + cur_hdr->ipdMax + cur_hdr->iextMax;
|
||
|
||
ext_ptr = PST_PRIVATE (pst)->extern_tab;
|
||
for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
|
||
parse_external (*ext_ptr, 1, fh->fBigendian);
|
||
|
||
/* If there are undefined, tell the user */
|
||
if (n_undef_symbols)
|
||
{
|
||
printf_filtered ("File %s contains %d unresolved references:",
|
||
st->filename, n_undef_symbols);
|
||
printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
|
||
n_undef_vars, n_undef_procs, n_undef_labels);
|
||
n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
|
||
|
||
}
|
||
pop_parse_stack ();
|
||
|
||
/* Sort the symbol table now, we are done adding symbols to it.*/
|
||
sort_symtab_syms (st);
|
||
|
||
sort_blocks (st);
|
||
}
|
||
|
||
/* Now link the psymtab and the symtab. */
|
||
pst->symtab = st;
|
||
|
||
current_objfile = NULL;
|
||
}
|
||
|
||
/* Ancillary parsing procedures. */
|
||
|
||
/* Lookup the type at relative index RN. Return it in TPP
|
||
if found and in any event come up with its name PNAME.
|
||
BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
|
||
Return value says how many aux symbols we ate. */
|
||
|
||
static int
|
||
cross_ref (ax, tpp, type_code, pname, bigend)
|
||
union aux_ext *ax;
|
||
struct type **tpp;
|
||
enum type_code type_code; /* Use to alloc new type if none is found. */
|
||
char **pname;
|
||
int bigend;
|
||
{
|
||
RNDXR rn[1];
|
||
unsigned rf;
|
||
int result = 1;
|
||
|
||
ecoff_swap_rndx_in (bigend, ax, rn);
|
||
|
||
/* Escape index means 'the next one' */
|
||
if (rn->rfd == 0xfff)
|
||
{
|
||
result++;
|
||
rf = AUX_GET_ISYM (bigend, ax + 1);
|
||
}
|
||
else
|
||
{
|
||
rf = rn->rfd;
|
||
}
|
||
|
||
if (rf == -1)
|
||
{
|
||
/* Ooops */
|
||
*pname = "<undefined>";
|
||
}
|
||
else
|
||
{
|
||
/*
|
||
* Find the relative file descriptor and the symbol in it
|
||
*/
|
||
FDR *fh = get_rfd (cur_fd, rf);
|
||
SYMR *sh;
|
||
struct type *t;
|
||
|
||
/*
|
||
* If we have processed this symbol then we left a forwarding
|
||
* pointer to the corresponding GDB symbol. If not, we`ll put
|
||
* it in a list of pending symbols, to be processed later when
|
||
* the file f will be. In any event, we collect the name for
|
||
* the type here. Which is why we made a first pass at
|
||
* strings.
|
||
*/
|
||
sh = (SYMR *) (fh->isymBase) + rn->index;
|
||
|
||
/* Careful, we might be looking at .o files */
|
||
*pname = (UNSAFE_DATA_ADDR (sh->iss)) ? "<undefined>" :
|
||
(char *) sh->iss;
|
||
|
||
/* Have we parsed it ? */
|
||
if ((!UNSAFE_DATA_ADDR (sh->value)) && (sh->st == stParsed))
|
||
{
|
||
t = (struct type *) sh->value;
|
||
*tpp = t;
|
||
}
|
||
else
|
||
{
|
||
/* Avoid duplicates */
|
||
struct mips_pending *p = is_pending_symbol (fh, sh);
|
||
if (p)
|
||
*tpp = p->t;
|
||
else
|
||
{
|
||
*tpp = init_type (type_code, 0, 0, (char *) NULL,
|
||
(struct objfile *) NULL);
|
||
add_pending (fh, sh, *tpp);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* We used one auxent normally, two if we got a "next one" rf. */
|
||
return result;
|
||
}
|
||
|
||
|
||
/* Quick&dirty lookup procedure, to avoid the MI ones that require
|
||
keeping the symtab sorted */
|
||
|
||
static struct symbol *
|
||
mylookup_symbol (name, block, namespace, class)
|
||
char *name;
|
||
register struct block *block;
|
||
enum namespace namespace;
|
||
enum address_class class;
|
||
{
|
||
register int bot, top, inc;
|
||
register struct symbol *sym;
|
||
|
||
bot = 0;
|
||
top = BLOCK_NSYMS (block);
|
||
inc = name[0];
|
||
while (bot < top)
|
||
{
|
||
sym = BLOCK_SYM (block, bot);
|
||
if (SYMBOL_NAME (sym)[0] == inc
|
||
&& SYMBOL_NAMESPACE (sym) == namespace
|
||
&& SYMBOL_CLASS (sym) == class
|
||
&& STREQ (SYMBOL_NAME (sym), name))
|
||
return sym;
|
||
bot++;
|
||
}
|
||
block = BLOCK_SUPERBLOCK (block);
|
||
if (block)
|
||
return mylookup_symbol (name, block, namespace, class);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Add a new symbol S to a block B.
|
||
Infrequently, we will need to reallocate the block to make it bigger.
|
||
We only detect this case when adding to top_stack->cur_block, since
|
||
that's the only time we know how big the block is. FIXME. */
|
||
|
||
static void
|
||
add_symbol (s, b)
|
||
struct symbol *s;
|
||
struct block *b;
|
||
{
|
||
int nsyms = BLOCK_NSYMS (b)++;
|
||
struct block *origb;
|
||
struct parse_stack *stackp;
|
||
|
||
if (b == top_stack->cur_block &&
|
||
nsyms >= top_stack->maxsyms)
|
||
{
|
||
complain (&block_overflow_complaint, SYMBOL_NAME (s));
|
||
/* In this case shrink_block is actually grow_block, since
|
||
BLOCK_NSYMS(b) is larger than its current size. */
|
||
origb = b;
|
||
b = shrink_block (top_stack->cur_block, top_stack->cur_st);
|
||
|
||
/* Now run through the stack replacing pointers to the
|
||
original block. shrink_block has already done this
|
||
for the blockvector and BLOCK_FUNCTION. */
|
||
for (stackp = top_stack; stackp; stackp = stackp->next)
|
||
{
|
||
if (stackp->cur_block == origb)
|
||
{
|
||
stackp->cur_block = b;
|
||
stackp->maxsyms = BLOCK_NSYMS (b);
|
||
}
|
||
}
|
||
}
|
||
BLOCK_SYM (b, nsyms) = s;
|
||
}
|
||
|
||
/* Add a new block B to a symtab S */
|
||
|
||
static void
|
||
add_block (b, s)
|
||
struct block *b;
|
||
struct symtab *s;
|
||
{
|
||
struct blockvector *bv = BLOCKVECTOR (s);
|
||
|
||
bv = (struct blockvector *) xrealloc ((PTR) bv,
|
||
sizeof (struct blockvector) +
|
||
BLOCKVECTOR_NBLOCKS (bv)
|
||
* sizeof (bv->block));
|
||
if (bv != BLOCKVECTOR (s))
|
||
BLOCKVECTOR (s) = bv;
|
||
|
||
BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
|
||
}
|
||
|
||
/* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
|
||
MIPS' linenumber encoding might need more than one byte
|
||
to describe it, LAST is used to detect these continuation lines */
|
||
|
||
static int
|
||
add_line (lt, lineno, adr, last)
|
||
struct linetable *lt;
|
||
int lineno;
|
||
CORE_ADDR adr;
|
||
int last;
|
||
{
|
||
if (last == 0)
|
||
last = -2; /* make sure we record first line */
|
||
|
||
if (last == lineno) /* skip continuation lines */
|
||
return lineno;
|
||
|
||
lt->item[lt->nitems].line = lineno;
|
||
lt->item[lt->nitems++].pc = adr << 2;
|
||
return lineno;
|
||
}
|
||
|
||
/* Sorting and reordering procedures */
|
||
|
||
/* Blocks with a smaller low bound should come first */
|
||
|
||
static int
|
||
compare_blocks (arg1, arg2)
|
||
const void *arg1, *arg2;
|
||
{
|
||
register int addr_diff;
|
||
struct block **b1 = (struct block **) arg1;
|
||
struct block **b2 = (struct block **) arg2;
|
||
|
||
addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
|
||
if (addr_diff == 0)
|
||
return (BLOCK_END ((*b1))) - (BLOCK_END ((*b2)));
|
||
return addr_diff;
|
||
}
|
||
|
||
/* Sort the blocks of a symtab S.
|
||
Reorder the blocks in the blockvector by code-address,
|
||
as required by some MI search routines */
|
||
|
||
static void
|
||
sort_blocks (s)
|
||
struct symtab *s;
|
||
{
|
||
struct blockvector *bv = BLOCKVECTOR (s);
|
||
|
||
if (BLOCKVECTOR_NBLOCKS (bv) <= 2)
|
||
{
|
||
/* Cosmetic */
|
||
if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
|
||
BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
|
||
if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
|
||
BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
|
||
return;
|
||
}
|
||
/*
|
||
* This is very unfortunate: normally all functions are compiled in
|
||
* the order they are found, but if the file is compiled -O3 things
|
||
* are very different. It would be nice to find a reliable test
|
||
* to detect -O3 images in advance.
|
||
*/
|
||
if (BLOCKVECTOR_NBLOCKS (bv) > 3)
|
||
qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
|
||
BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
|
||
sizeof (struct block *),
|
||
compare_blocks);
|
||
|
||
{
|
||
register CORE_ADDR high = 0;
|
||
register int i, j = BLOCKVECTOR_NBLOCKS (bv);
|
||
|
||
for (i = FIRST_LOCAL_BLOCK; i < j; i++)
|
||
if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
|
||
high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
|
||
BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
|
||
}
|
||
|
||
BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
|
||
BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
|
||
|
||
BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
|
||
BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
|
||
BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
|
||
BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
|
||
}
|
||
|
||
|
||
/* Constructor/restructor/destructor procedures */
|
||
|
||
/* Allocate a new symtab for NAME. Needs an estimate of how many symbols
|
||
MAXSYMS and linenumbers MAXLINES we'll put in it */
|
||
|
||
static struct symtab *
|
||
new_symtab (name, maxsyms, maxlines, objfile)
|
||
char *name;
|
||
int maxsyms;
|
||
int maxlines;
|
||
struct objfile *objfile;
|
||
{
|
||
struct symtab *s = allocate_symtab (name, objfile);
|
||
|
||
LINETABLE (s) = new_linetable (maxlines);
|
||
|
||
/* All symtabs must have at least two blocks */
|
||
BLOCKVECTOR (s) = new_bvect (2);
|
||
BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);
|
||
BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);
|
||
BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =
|
||
BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
|
||
|
||
s->free_code = free_linetable;
|
||
|
||
return (s);
|
||
}
|
||
|
||
/* Allocate a new partial_symtab NAME */
|
||
|
||
static struct partial_symtab *
|
||
new_psymtab (name, objfile)
|
||
char *name;
|
||
struct objfile *objfile;
|
||
{
|
||
struct partial_symtab *psymtab;
|
||
|
||
/* FIXME -- why (char *) -1 rather than NULL? */
|
||
psymtab = allocate_psymtab (name == (char *) -1 ? "<no name>" : name,
|
||
objfile);
|
||
|
||
/* Keep a backpointer to the file's symbols */
|
||
|
||
psymtab->read_symtab_private = ((char *)
|
||
obstack_alloc (&objfile->psymbol_obstack,
|
||
sizeof (struct symloc)));
|
||
CUR_HDR (psymtab) = cur_hdr;
|
||
|
||
/* The way to turn this into a symtab is to call... */
|
||
psymtab->read_symtab = mipscoff_psymtab_to_symtab;
|
||
return (psymtab);
|
||
}
|
||
|
||
|
||
/* Allocate a linetable array of the given SIZE. Since the struct
|
||
already includes one item, we subtract one when calculating the
|
||
proper size to allocate. */
|
||
|
||
static struct linetable *
|
||
new_linetable (size)
|
||
int size;
|
||
{
|
||
struct linetable *l;
|
||
|
||
size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);
|
||
l = (struct linetable *) xmalloc (size);
|
||
l->nitems = 0;
|
||
return l;
|
||
}
|
||
|
||
/* Oops, too big. Shrink it. This was important with the 2.4 linetables,
|
||
I am not so sure about the 3.4 ones.
|
||
|
||
Since the struct linetable already includes one item, we subtract one when
|
||
calculating the proper size to allocate. */
|
||
|
||
static struct linetable *
|
||
shrink_linetable (lt)
|
||
struct linetable *lt;
|
||
{
|
||
|
||
return (struct linetable *) xrealloc ((PTR) lt,
|
||
sizeof (struct linetable)
|
||
+ (lt->nitems - 1) * sizeof (lt->item));
|
||
}
|
||
|
||
/* Allocate and zero a new blockvector of NBLOCKS blocks. */
|
||
|
||
static struct blockvector *
|
||
new_bvect (nblocks)
|
||
int nblocks;
|
||
{
|
||
struct blockvector *bv;
|
||
int size;
|
||
|
||
size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
|
||
bv = (struct blockvector *) xzalloc (size);
|
||
|
||
BLOCKVECTOR_NBLOCKS (bv) = nblocks;
|
||
|
||
return bv;
|
||
}
|
||
|
||
/* Allocate and zero a new block of MAXSYMS symbols */
|
||
|
||
static struct block *
|
||
new_block (maxsyms)
|
||
int maxsyms;
|
||
{
|
||
int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
|
||
|
||
return (struct block *) xzalloc (size);
|
||
}
|
||
|
||
/* Ooops, too big. Shrink block B in symtab S to its minimal size.
|
||
Shrink_block can also be used by add_symbol to grow a block. */
|
||
|
||
static struct block *
|
||
shrink_block (b, s)
|
||
struct block *b;
|
||
struct symtab *s;
|
||
{
|
||
struct block *new;
|
||
struct blockvector *bv = BLOCKVECTOR (s);
|
||
int i;
|
||
|
||
/* Just reallocate it and fix references to the old one */
|
||
|
||
new = (struct block *) xrealloc ((PTR) b, sizeof (struct block) +
|
||
(BLOCK_NSYMS (b) - 1) * sizeof (struct symbol *));
|
||
|
||
/* Should chase pointers to old one. Fortunately, that`s just
|
||
the block`s function and inferior blocks */
|
||
if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
|
||
SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
|
||
for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
|
||
if (BLOCKVECTOR_BLOCK (bv, i) == b)
|
||
BLOCKVECTOR_BLOCK (bv, i) = new;
|
||
else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)
|
||
BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;
|
||
return new;
|
||
}
|
||
|
||
/* Create a new symbol with printname NAME */
|
||
|
||
static struct symbol *
|
||
new_symbol (name)
|
||
char *name;
|
||
{
|
||
struct symbol *s = (struct symbol *)
|
||
obstack_alloc (¤t_objfile->symbol_obstack, sizeof (struct symbol));
|
||
|
||
memset ((PTR) s, 0, sizeof (*s));
|
||
SYMBOL_NAME (s) = name;
|
||
return s;
|
||
}
|
||
|
||
/* Create a new type with printname NAME */
|
||
|
||
static struct type *
|
||
new_type (name)
|
||
char *name;
|
||
{
|
||
struct type *t;
|
||
|
||
t = alloc_type (current_objfile);
|
||
TYPE_NAME (t) = name;
|
||
TYPE_CPLUS_SPECIFIC (t) = ((struct cplus_struct_type *)
|
||
&cplus_struct_default);
|
||
return t;
|
||
}
|
||
|
||
|
||
/* Things used for calling functions in the inferior.
|
||
These functions are exported to our companion
|
||
mips-tdep.c file and are here because they play
|
||
with the symbol-table explicitly. */
|
||
|
||
/* Sigtramp: make sure we have all the necessary information
|
||
about the signal trampoline code. Since the official code
|
||
from MIPS does not do so, we make up that information ourselves.
|
||
If they fix the library (unlikely) this code will neutralize itself. */
|
||
|
||
static void
|
||
fixup_sigtramp ()
|
||
{
|
||
struct symbol *s;
|
||
struct symtab *st;
|
||
struct block *b, *b0;
|
||
|
||
sigtramp_address = -1;
|
||
|
||
/* We know it is sold as sigvec */
|
||
s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
|
||
|
||
/* Most programs do not play with signals */
|
||
if (s == 0)
|
||
s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
|
||
else
|
||
{
|
||
b0 = SYMBOL_BLOCK_VALUE (s);
|
||
|
||
/* A label of sigvec, to be more precise */
|
||
s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
|
||
}
|
||
|
||
/* But maybe this program uses its own version of sigvec */
|
||
if (s == 0)
|
||
return;
|
||
|
||
/* Did we or MIPSco fix the library ? */
|
||
if (SYMBOL_CLASS (s) == LOC_BLOCK)
|
||
{
|
||
sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
|
||
sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
|
||
return;
|
||
}
|
||
|
||
sigtramp_address = SYMBOL_VALUE (s);
|
||
sigtramp_end = sigtramp_address + 0x88; /* black magic */
|
||
|
||
/* But what symtab does it live in ? */
|
||
st = find_pc_symtab (SYMBOL_VALUE (s));
|
||
|
||
/*
|
||
* Ok, there goes the fix: turn it into a procedure, with all the
|
||
* needed info. Note we make it a nested procedure of sigvec,
|
||
* which is the way the (assembly) code is actually written.
|
||
*/
|
||
SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_BLOCK;
|
||
SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
|
||
(struct objfile *) NULL);
|
||
TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = builtin_type_void;
|
||
|
||
/* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
|
||
b = new_block (1);
|
||
SYMBOL_BLOCK_VALUE (s) = b;
|
||
BLOCK_START (b) = sigtramp_address;
|
||
BLOCK_END (b) = sigtramp_end;
|
||
BLOCK_FUNCTION (b) = s;
|
||
BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
|
||
add_block (b, st);
|
||
sort_blocks (st);
|
||
|
||
/* Make a MIPS_EFI_SYMBOL_NAME entry for it */
|
||
{
|
||
struct mips_extra_func_info *e =
|
||
((struct mips_extra_func_info *)
|
||
xzalloc (sizeof (struct mips_extra_func_info)));
|
||
|
||
e->numargs = 0; /* the kernel thinks otherwise */
|
||
/* align_longword(sigcontext + SIGFRAME) */
|
||
e->pdr.frameoffset = 0x150;
|
||
e->pdr.framereg = SP_REGNUM;
|
||
e->pdr.pcreg = 31;
|
||
e->pdr.regmask = -2;
|
||
e->pdr.regoffset = -(41 * sizeof (int));
|
||
e->pdr.fregmask = -1;
|
||
e->pdr.fregoffset = -(37 * sizeof (int));
|
||
e->pdr.isym = (long) s;
|
||
|
||
current_objfile = st->objfile; /* Keep new_symbol happy */
|
||
s = new_symbol (MIPS_EFI_SYMBOL_NAME);
|
||
SYMBOL_VALUE (s) = (int) e;
|
||
SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
|
||
SYMBOL_CLASS (s) = LOC_CONST;
|
||
SYMBOL_TYPE (s) = builtin_type_void;
|
||
current_objfile = NULL;
|
||
}
|
||
|
||
BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s;
|
||
}
|
||
|
||
|
||
/* Fake up identical offsets for all sections. */
|
||
|
||
struct section_offsets *
|
||
mipscoff_symfile_offsets (objfile, addr)
|
||
struct objfile *objfile;
|
||
CORE_ADDR addr;
|
||
{
|
||
struct section_offsets *section_offsets;
|
||
int i;
|
||
|
||
section_offsets = ((struct section_offsets *)
|
||
obstack_alloc (&objfile->psymbol_obstack,
|
||
(sizeof (struct section_offsets)
|
||
+ (sizeof (section_offsets->offsets)
|
||
* (SECT_OFF_MAX - 1)))));
|
||
|
||
for (i = 0; i < SECT_OFF_MAX; i++)
|
||
ANOFFSET (section_offsets, i) = addr;
|
||
|
||
return section_offsets;
|
||
}
|
||
|
||
/* Initialization */
|
||
|
||
static struct sym_fns ecoff_sym_fns =
|
||
{
|
||
"ecoff", /* sym_name: name or name prefix of BFD target type */
|
||
5, /* sym_namelen: number of significant sym_name chars */
|
||
mipscoff_new_init, /* sym_new_init: init anything gbl to entire symtab */
|
||
mipscoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */
|
||
mipscoff_symfile_read, /* sym_read: read a symbol file into symtab */
|
||
mipscoff_symfile_finish, /* sym_finish: finished with file, cleanup */
|
||
mipscoff_symfile_offsets, /* sym_offsets: dummy FIXME til implem sym reloc */
|
||
NULL /* next: pointer to next struct sym_fns */
|
||
};
|
||
|
||
|
||
void
|
||
_initialize_mipsread ()
|
||
{
|
||
add_symtab_fns (&ecoff_sym_fns);
|
||
|
||
/* Missing basic types */
|
||
|
||
builtin_type_string =
|
||
init_type (TYPE_CODE_STRING,
|
||
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
|
||
0, "string",
|
||
(struct objfile *) NULL);
|
||
builtin_type_complex =
|
||
init_type (TYPE_CODE_FLT,
|
||
TARGET_COMPLEX_BIT / TARGET_CHAR_BIT,
|
||
0, "complex",
|
||
(struct objfile *) NULL);
|
||
builtin_type_double_complex =
|
||
init_type (TYPE_CODE_FLT,
|
||
TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
|
||
0, "double complex",
|
||
(struct objfile *) NULL);
|
||
builtin_type_fixed_dec =
|
||
init_type (TYPE_CODE_INT,
|
||
TARGET_INT_BIT / TARGET_CHAR_BIT,
|
||
0, "fixed decimal",
|
||
(struct objfile *) NULL);
|
||
builtin_type_float_dec =
|
||
init_type (TYPE_CODE_FLT,
|
||
TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
|
||
0, "floating decimal",
|
||
(struct objfile *) NULL);
|
||
}
|