/* Read a symbol table in MIPS' format (Third-Eye).
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993 Free Software
- Foundation, Inc.
- Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU. Major work
- by Per Bothner, John Gilmore and Ian Lance Taylor at Cygnus Support.
-This file is part of GDB.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
-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.
+ Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU. Major work
+ by Per Bothner, John Gilmore and Ian Lance Taylor at Cygnus Support.
-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 file is part of GDB.
-/* 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.
+ 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 3 of the License, or
+ (at your option) any later version.
- 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.
+ 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.
- 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.
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
- This module can read all four of the known byte-order combinations,
- on any type of host. */
+/* Read symbols from an ECOFF file. Most of the work is done in
+ mdebugread.c. */
#include "defs.h"
+#include "bfd.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"
+#include "mdebugread.h"
-/* These are needed if the tm.h file does not contain the necessary
- mips specific definitions. */
-
-#ifndef MIPS_EFI_SYMBOL_NAME
-#define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
#include "coff/sym.h"
-#include "coff/symconst.h"
-typedef struct mips_extra_func_info {
- long numargs;
- PDR pdr;
-} *mips_extra_func_info_t;
-#ifndef RA_REGNUM
-#define RA_REGNUM 0
-#endif
-#ifndef FP0_REGNUM
-#define FP0_REGNUM 0
-#endif
-#endif
-
-#ifdef USG
-#include <sys/types.h>
-#endif
-
-#include <sys/param.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <string.h>
-
-#include "gdb-stabs.h"
-
-#include "bfd.h"
-
#include "coff/internal.h"
-#include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
-
-/* FIXME: coff/internal.h and aout/aout64.h both define N_ABS. We
- want the definition from aout/aout64.h. */
-#undef N_ABS
-
-#include "libaout.h" /* Private BFD a.out information. */
-#include "aout/aout64.h"
-#include "aout/stab_gnu.h" /* STABS information */
-
-/* FIXME: libcoff.h and libaout.h both define a couple of macros. We
- don't use them. */
-#undef exec_hdr
-#undef obj_sym_filepos
-
+#include "coff/ecoff.h"
#include "libcoff.h" /* Private BFD COFF information. */
#include "libecoff.h" /* Private BFD ECOFF information. */
+#include "elf/common.h"
+#include "elf/internal.h"
+#include "elf/mips.h"
-#include "expression.h"
-#include "language.h" /* Needed inside partial-stab.h */
-
-/* Information is passed among various mipsread routines for accessing
- symbol files. A pointer to this structure is kept in the sym_private
- field of the objfile struct. */
-
-struct ecoff_symfile_info {
- struct mips_pending **pending_list;
-};
-#define ECOFF_SYMFILE_INFO(o) ((struct ecoff_symfile_info *)((o)->sym_private))
-#define ECOFF_PENDING_LIST(o) (ECOFF_SYMFILE_INFO(o)->pending_list)
-
-
-/* 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 BFD 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_BFD(p) (PST_PRIVATE(p)->cur_bfd)
-
-struct symloc
-{
- int fdr_idx;
- bfd *cur_bfd;
- EXTR *extern_tab; /* Pointer to external symbols for this file. */
- int extern_count; /* Size of extern_tab. */
- enum language pst_language;
-};
-
-/* 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 for %s", 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};
-
-struct complaint bad_setjmp_pdr_complaint =
-{"fixing bad setjmp PDR from libc", 0, 0};
-
-struct complaint bad_fbitfield_complaint =
-{"can't handle TIR fBitfield for %s", 0, 0};
-
-struct complaint bad_rfd_entry_complaint =
-{"bad rfd entry for %s: file %d, index %d", 0, 0};
-
-struct complaint unexpected_type_code_complaint =
-{"unexpected type code for %s", 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)))
-\f
-/* 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;
-
-/* Current BFD. */
-
-static bfd *cur_bfd;
-
-/* 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
-read_mips_symtab PARAMS ((struct objfile *, struct section_offsets *));
-
-static void
-read_the_mips_symtab PARAMS ((bfd *));
-
-static int
-upgrade_type PARAMS ((struct type **, int, union aux_ext *, int));
-
-static void
-parse_partial_symbols PARAMS ((struct objfile *,
- struct section_offsets *));
-
-static int
-cross_ref PARAMS ((union aux_ext *, struct type **, enum type_code, char **,
- int, char *));
-
-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, char *));
-
-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 *));
-
-static void
-psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *));
-
-static void
-add_block PARAMS ((struct block *, struct symtab *));
+#include "psymtab.h"
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));
-\f
-/* Things we export to other modules */
+read_alphacoff_dynamic_symtab (minimal_symbol_reader &,
+ struct objfile *objfile);
-/* 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;
+/* Initialize anything that needs initializing when a completely new
+ symbol file is specified (not just adding some symbols from another
+ file, e.g. a shared library). */
static void
-mipscoff_new_init (ignore)
- struct objfile *ignore;
+mipscoff_new_init (struct objfile *ignore)
{
- sigtramp_address = 0;
stabsread_new_init ();
- buildsym_new_init ();
-}
-
-static void
-mipscoff_symfile_init (objfile)
- struct objfile *objfile;
-{
- if (objfile->sym_private != NULL)
- {
- mfree (objfile->md, objfile->sym_private);
- }
- objfile->sym_private = (PTR)
- xmmalloc (objfile->md, sizeof (struct ecoff_symfile_info));
-}
-
-static void
-mipscoff_symfile_read (objfile, section_offsets, mainline)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
- int mainline;
-{
- struct cleanup * back_to;
-
- init_minimal_symbol_collection ();
- back_to = 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);
-
- do_cleanups (back_to);
}
-/* 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. */
+/* Initialize to read a symbol file (nothing to do). */
static void
-mipscoff_symfile_finish (objfile)
- struct objfile *objfile;
-{
- if (objfile->sym_private != NULL)
- {
- mfree (objfile->md, objfile->sym_private);
- }
-
- cur_bfd = 0;
-}
-
-/* Allocate zeroed memory */
-
-static PTR
-xzalloc (size)
- unsigned int size;
+mipscoff_symfile_init (struct objfile *objfile)
{
- 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 */
+/* Read a symbol file from a file. */
static void
-mipscoff_psymtab_to_symtab (pst)
- struct partial_symtab *pst;
+mipscoff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
{
+ bfd *abfd = objfile->obfd;
- if (!pst)
- return;
+ minimal_symbol_reader reader (objfile);
- if (info_verbose)
- {
- printf_filtered ("Reading in symbols for %s...", pst->filename);
- fflush (stdout);
- }
+ /* Now that the executable file is positioned at symbol table,
+ process it and define symbols accordingly. */
- next_symbol_text_func = mips_next_symbol_text;
+ if (!((*ecoff_backend (abfd)->debug_swap.read_debug_info)
+ (abfd, NULL, &ecoff_data (abfd)->debug_info)))
+ error (_("Error reading symbol table: %s"), bfd_errmsg (bfd_get_error ()));
- psymtab_to_symtab_1 (pst, pst->filename);
+ mdebug_build_psymtabs (reader, objfile, &ecoff_backend (abfd)->debug_swap,
+ &ecoff_data (abfd)->debug_info);
- /* 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);
+ /* Add alpha coff dynamic symbols. */
- if (info_verbose)
- printf_filtered ("done.\n");
-}
+ read_alphacoff_dynamic_symtab (reader, objfile);
-/* Exported procedure: Is PC in the signal trampoline code */
+ /* Install any minimal symbols that have been collected as the current
+ minimal symbols for this objfile. */
-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);
+ reader.install ();
}
-\f
-/* File-level interface functions */
-/* Read the symtab information from file ABFD into memory. */
+/* Perform any local cleanups required when we are done with a
+ particular objfile. */
static void
-read_the_mips_symtab (abfd)
- bfd *abfd;
+mipscoff_symfile_finish (struct objfile *objfile)
{
- if (ecoff_slurp_symbolic_info (abfd) == false)
- error ("Error reading symbol table: %s", bfd_errmsg (bfd_error));
}
-/* Find a file descriptor given its index RF relative to a file CF */
-
-static FDR *
-get_rfd (cf, rf)
- int cf, rf;
-{
- FDR *fdrs;
- register FDR *f;
- RFDT rfd;
-
- fdrs = ecoff_data (cur_bfd)->fdr;
- f = fdrs + cf;
- /* Object files do not have the RFD table, all refs are absolute */
- if (f->rfdBase == 0)
- return fdrs + rf;
- (*ecoff_backend (cur_bfd)->swap_rfd_in)
- (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_rfd
- + (f->rfdBase + rf) * ecoff_backend (cur_bfd)->external_rfd_size),
- &rfd);
- return fdrs + rfd;
-}
+/* Alpha OSF/1 encapsulates the dynamic symbols in ELF format in a
+ standard COFF section. The ELF format for the symbols differs from
+ the format defined in elf/external.h. It seems that a normal ELF
+ 32-bit format is used, and the representation only changes because
+ longs are 64-bit on the alpha. In addition, the handling of
+ text/data section indices for symbols is different from the ELF
+ ABI. As the BFD linker currently does not support dynamic linking
+ on the alpha, there seems to be no reason to pollute BFD with
+ another mixture of object file formats for now. */
-/* Return a safer print NAME for a file descriptor */
+/* Format of an alpha external ELF symbol. */
-static char *
-fdr_name (f)
- FDR *f;
+typedef struct
{
- if (f->rss == -1)
- return "<stripped file>";
- if (f->rss == 0)
- return "<NFY>";
- return ecoff_data (cur_bfd)->ss + f->issBase + f->rss;
-}
-
+ unsigned char st_name[4]; /* Symbol name, index in string table. */
+ unsigned char st_pad[4]; /* Pad to long word boundary. */
+ unsigned char st_value[8]; /* Value of the symbol. */
+ unsigned char st_size[4]; /* Associated symbol size. */
+ unsigned char st_info[1]; /* Type and binding attributes. */
+ unsigned char st_other[1]; /* No defined meaning, 0. */
+ unsigned char st_shndx[2]; /* Associated section index. */
+} Elfalpha_External_Sym;
-/* Read in and parse the symtab of the file OBJFILE. Symbols from
- different sections are relocated via the SECTION_OFFSETS. */
+/* Format of an alpha external ELF dynamic info structure. */
-static void
-read_mips_symtab (objfile, section_offsets)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
+typedef struct
{
- cur_bfd = objfile->obfd;
-
- read_the_mips_symtab (objfile->obfd);
-
- parse_partial_symbols (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
-}
-\f
-/* Local utilities */
+ unsigned char d_tag[4]; /* Tag. */
+ unsigned char d_pad[4]; /* Pad to long word boundary. */
+ union
+ {
+ unsigned char d_ptr[8]; /* Pointer value. */
+ unsigned char d_val[4]; /* Integer value. */
+ }
+ d_un;
+} Elfalpha_External_Dyn;
-/* Map of FDR indexes to partial symtabs */
+/* Struct to obtain the section pointers for alpha dynamic symbol info. */
-struct pst_map
+struct alphacoff_dynsecinfo
{
- struct partial_symtab *pst; /* the psymtab proper */
- int n_globals; /* exported globals (external symbols) */
- int globals_offset; /* cumulative */
+ asection *sym_sect; /* Section pointer for .dynsym section. */
+ asection *str_sect; /* Section pointer for .dynstr section. */
+ asection *dyninfo_sect; /* Section pointer for .dynamic section. */
+ asection *got_sect; /* Section pointer for .got section. */
};
-
-/* 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 */
+/* We are called once per section from read_alphacoff_dynamic_symtab.
+ We need to examine each section we are passed, check to see if it
+ is something we are interested in processing, and if so, stash away
+ some access information for the section. */
static void
-push_parse_stack ()
+alphacoff_locate_sections (bfd *ignore_abfd, asection *sectp, void *sip)
{
- struct parse_stack *new;
+ struct alphacoff_dynsecinfo *si;
- /* 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;
+ si = (struct alphacoff_dynsecinfo *) sip;
- *new = *top_stack;
- top_stack->prev = new;
- new->prev = prev;
- new->next = top_stack;
- }
- top_stack = new;
+ if (strcmp (sectp->name, ".dynsym") == 0)
+ si->sym_sect = sectp;
+ else if (strcmp (sectp->name, ".dynstr") == 0)
+ si->str_sect = sectp;
+ else if (strcmp (sectp->name, ".dynamic") == 0)
+ si->dyninfo_sect = sectp;
+ else if (strcmp (sectp->name, ".got") == 0)
+ si->got_sect = sectp;
}
-/* Exit a lexical context */
+/* Scan an alpha dynamic symbol table for symbols of interest and add
+ them to the minimal symbol table. */
static void
-pop_parse_stack ()
+read_alphacoff_dynamic_symtab (minimal_symbol_reader &reader,
+ struct objfile *objfile)
{
- if (!top_stack)
+ bfd *abfd = objfile->obfd;
+ struct alphacoff_dynsecinfo si;
+ int sym_count;
+ int i;
+ int stripped;
+ Elfalpha_External_Sym *x_symp;
+ gdb_byte *dyninfo_p;
+ gdb_byte *dyninfo_end;
+ int got_entry_size = 8;
+ int dt_mips_local_gotno = -1;
+ int dt_mips_gotsym = -1;
+
+ /* We currently only know how to handle alpha dynamic symbols. */
+ if (bfd_get_arch (abfd) != bfd_arch_alpha)
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 */
-struct mips_pending
-{
- struct mips_pending *next; /* link */
- char *s; /* the unswapped symbol */
- struct type *t; /* its partial type descriptor */
-};
-
-
-/* Check whether we already saw symbol SH in file FH as undefined */
-
-static struct mips_pending *
-is_pending_symbol (fh, sh)
- FDR *fh;
- char *sh;
-{
- int f_idx = fh - ecoff_data (cur_bfd)->fdr;
- register struct mips_pending *p;
- struct mips_pending **pending_list = ECOFF_PENDING_LIST (current_objfile);
-
- /* 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;
-}
+ /* Locate the dynamic symbols sections and read them in. */
+ memset ((char *) &si, 0, sizeof (si));
+ bfd_map_over_sections (abfd, alphacoff_locate_sections, (void *) & si);
+ if (si.sym_sect == NULL || si.str_sect == NULL
+ || si.dyninfo_sect == NULL || si.got_sect == NULL)
+ return;
-/* Add a new undef symbol SH of type T */
+ gdb::byte_vector sym_sec (bfd_section_size (si.sym_sect));
+ gdb::byte_vector str_sec (bfd_section_size (si.str_sect));
+ gdb::byte_vector dyninfo_sec (bfd_section_size (si.dyninfo_sect));
+ gdb::byte_vector got_sec (bfd_section_size (si.got_sect));
-static void
-add_pending (fh, sh, t)
- FDR *fh;
- char *sh;
- struct type *t;
-{
- int f_idx = fh - ecoff_data (cur_bfd)->fdr;
- struct mips_pending *p = is_pending_symbol (fh, sh);
+ if (!bfd_get_section_contents (abfd, si.sym_sect, sym_sec.data (),
+ (file_ptr) 0, sym_sec.size ()))
+ return;
+ if (!bfd_get_section_contents (abfd, si.str_sect, str_sec.data (),
+ (file_ptr) 0, str_sec.size ()))
+ return;
+ if (!bfd_get_section_contents (abfd, si.dyninfo_sect, dyninfo_sec.data (),
+ (file_ptr) 0, dyninfo_sec.size ()))
+ return;
+ if (!bfd_get_section_contents (abfd, si.got_sect, got_sec.data (),
+ (file_ptr) 0, got_sec.size ()))
+ return;
- /* Make sure we do not make duplicates */
- if (!p)
+ /* Find the number of local GOT entries and the index for the
+ first dynamic symbol in the GOT. */
+ for ((dyninfo_p = dyninfo_sec.data (),
+ dyninfo_end = dyninfo_p + dyninfo_sec.size ());
+ dyninfo_p < dyninfo_end;
+ dyninfo_p += sizeof (Elfalpha_External_Dyn))
{
- struct mips_pending **pending_list = ECOFF_PENDING_LIST (current_objfile);
+ Elfalpha_External_Dyn *x_dynp = (Elfalpha_External_Dyn *) dyninfo_p;
+ long dyn_tag;
- p = ((struct mips_pending *)
- obstack_alloc (¤t_objfile->psymbol_obstack,
- sizeof (struct mips_pending)));
- p->s = sh;
- p->t = t;
- p->next = pending_list[f_idx];
- pending_list[f_idx] = p;
+ dyn_tag = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_tag);
+ if (dyn_tag == DT_NULL)
+ break;
+ else if (dyn_tag == DT_MIPS_LOCAL_GOTNO)
+ {
+ if (dt_mips_local_gotno < 0)
+ dt_mips_local_gotno
+ = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_un.d_val);
+ }
+ else if (dyn_tag == DT_MIPS_GOTSYM)
+ {
+ if (dt_mips_gotsym < 0)
+ dt_mips_gotsym
+ = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_un.d_val);
+ }
}
-}
-\f
-
-/* 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).
- EXT_SH points to the unswapped symbol, which is needed for struct,
- union, etc., types; it is NULL for an EXTR. BIGEND says whether
- aux symbols are big-endian or little-endian. Return count of
- SYMR's handled (normally one).
-
- FIXME: This modifies the symbol, but the only way we have to save
- the modified information is to stuff it back into the BFD data. */
-
-static int
-parse_symbol (sh, ax, ext_sh, bigend)
- SYMR *sh;
- union aux_ext *ax;
- char *ext_sh;
- int bigend;
-{
- const bfd_size_type external_sym_size
- = ecoff_backend (cur_bfd)->external_sym_size;
- void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) =
- ecoff_backend (cur_bfd)->swap_sym_in;
- char *name;
- struct symbol *s;
- struct block *b;
- struct mips_pending *pend;
- struct type *t;
- struct field *f;
- int count = 1;
- enum address_class class;
- TIR tir;
+ if (dt_mips_local_gotno < 0 || dt_mips_gotsym < 0)
+ return;
- if (ext_sh == (char *) NULL)
- name = ecoff_data (cur_bfd)->ssext + sh->iss;
- else
- name = ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh->iss;
+ /* Scan all dynamic symbols and enter them into the minimal symbol
+ table if appropriate. */
+ sym_count = sym_sec.size () / sizeof (Elfalpha_External_Sym);
+ stripped = (bfd_get_symcount (abfd) == 0);
- switch (sh->st)
+ /* Skip first symbol, which is a null dummy. */
+ for (i = 1, x_symp = (Elfalpha_External_Sym *) sym_sec.data () + 1;
+ i < sym_count;
+ i++, x_symp++)
{
- 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 (name);
- SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
- goto data;
+ unsigned long strx;
+ char *name;
+ bfd_vma sym_value;
+ unsigned char sym_info;
+ unsigned int sym_shndx;
+ int isglobal;
+ enum minimal_symbol_type ms_type;
+
+ strx = bfd_h_get_32 (abfd, (bfd_byte *) x_symp->st_name);
+ if (strx >= str_sec.size ())
+ continue;
+ name = (char *) (str_sec.data () + strx);
+ if (*name == '\0' || *name == '.')
+ continue;
- case stStatic: /* static data, goes into current block. */
- class = LOC_STATIC;
- b = top_stack->cur_block;
- s = new_symbol (name);
- if (sh->sc == scCommon)
- {
- /* It is a FORTRAN common block. At least for SGI Fortran the
- address is not in the symbol; we need to fix it later in
- scan_file_globals. */
- int bucket = hashname (SYMBOL_NAME (s));
- SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
- global_sym_chain[bucket] = s;
- }
- else
- SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
- goto data;
+ sym_value = bfd_h_get_64 (abfd, (bfd_byte *) x_symp->st_value);
+ sym_info = bfd_h_get_8 (abfd, (bfd_byte *) x_symp->st_info);
+ sym_shndx = bfd_h_get_16 (abfd, (bfd_byte *) x_symp->st_shndx);
+ if (sym_shndx >= (SHN_LORESERVE & 0xffff))
+ sym_shndx += SHN_LORESERVE - (SHN_LORESERVE & 0xffff);
+ isglobal = (ELF_ST_BIND (sym_info) == STB_GLOBAL);
- case stLocal: /* local variable, goes into current block */
- if (sh->sc == scRegister)
+ if (sym_shndx == SHN_UNDEF)
{
- class = LOC_REGISTER;
- if (sh->value > 31)
- sh->value += FP0_REGNUM - 32;
- }
- else
- class = LOC_LOCAL;
- b = top_stack->cur_block;
- s = new_symbol (name);
- SYMBOL_VALUE (s) = sh->value;
+ /* Handle undefined functions which are defined in a shared
+ library. */
+ if (ELF_ST_TYPE (sym_info) != STT_FUNC
+ || ELF_ST_BIND (sym_info) != STB_GLOBAL)
+ continue;
- data: /* Common code for symbols describing data */
- SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
- SYMBOL_CLASS (s) = class;
- add_symbol (s, b);
+ ms_type = mst_solib_trampoline;
- /* 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, name);
- /* Value of a data symbol is its memory address */
- break;
+ /* If sym_value is nonzero, it points to the shared library
+ trampoline entry, which is what we are looking for.
- case stParam: /* arg to procedure, goes into current block */
- max_gdbinfo++;
- top_stack->numargs++;
+ If sym_value is zero, then we have to get the GOT entry
+ for the symbol.
- /* 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);
+ If the GOT entry is nonzero, it represents the quickstart
+ address of the function and we use that as the symbol
+ value.
- SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
- switch (sh->sc)
- {
- case scRegister:
- /* Pass by value in register. */
- SYMBOL_CLASS(s) = LOC_REGPARM;
- if (sh->value > 31)
- sh->value += FP0_REGNUM-32;
- break;
- case scVar:
- /* Pass by reference on stack. */
- SYMBOL_CLASS(s) = LOC_REF_ARG;
- break;
- case scVarRegister:
- /* Pass by reference in register. */
- SYMBOL_CLASS(s) = LOC_REGPARM_ADDR;
- break;
- default:
- /* Pass by value on stack. */
- SYMBOL_CLASS(s) = LOC_ARG;
- break;
+ If the GOT entry is zero, the function address has to be
+ resolved by the runtime loader before the executable is
+ started. We are unable to find any meaningful address
+ for these functions in the executable file, so we skip
+ them. */
+ if (sym_value == 0)
+ {
+ int got_entry_offset =
+ (i - dt_mips_gotsym + dt_mips_local_gotno) * got_entry_size;
+
+ if (got_entry_offset < 0
+ || got_entry_offset >= got_sec.size ())
+ continue;
+ sym_value =
+ bfd_h_get_64 (abfd,
+ (bfd_byte *) (got_sec.data ()
+ + got_entry_offset));
+ if (sym_value == 0)
+ continue;
+ }
}
- SYMBOL_VALUE (s) = sh->value;
- SYMBOL_TYPE (s) = parse_type (ax + sh->index, 0, bigend, name);
- 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 (name);
- 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 (name);
- 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, name);
- 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. */
- memcpy (lookup_function_type (t), SYMBOL_TYPE (s), 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);
- sh->st = stParsed;
- 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;
- char *ext_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 && sh->sc != scCommon)
- 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 (name);
- 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 (ext_tsym = ext_sh + external_sym_size;
- ;
- ext_tsym += external_sym_size)
- {
- SYMR tsym;
-
- (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
-
- switch (tsym.st)
- {
- case stEnd:
- goto end_of_fields;
-
- case 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;
- break;
-
- case stBlock:
- case stUnion:
- case stEnum:
- case stStruct:
- case stParsed:
- {
-#if 0
- /* This is a no-op; is it trying to tell us something
- we should be checking? */
- if (tsym.sc == scVariant); /*UNIMPLEMENTED*/
-#endif
- if (tsym.index != 0)
- {
- /* This is something like a struct within a
- struct. Skip over the fields of the inner
- struct. The -1 is because the for loop will
- increment ext_tsym. */
- ext_tsym = ((char *) ecoff_data (cur_bfd)->external_sym
- + ((cur_fdr->isymBase + tsym.index - 1)
- * external_sym_size));
- }
- }
- break;
-
- case stTypedef:
- /* mips cc puts out a typedef for struct x if it is not yet
- defined when it encounters
- struct y { struct x *xp; };
- Just ignore it. */
- break;
-
- default:
- complain (&block_member_complaint, tsym.st);
- }
- }
- end_of_fields:;
-
- /* 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.) */
+ /* Symbols defined in the executable itself. We only care
+ about them if this is a stripped executable, otherwise
+ they have been retrieved from the normal symbol table
+ already. */
+ if (!stripped)
+ continue;
- if (type_code == TYPE_CODE_UNDEF)
- if (nfields > 1 && max_value == 0)
- type_code = TYPE_CODE_UNION;
+ if (sym_shndx == SHN_MIPS_TEXT)
+ {
+ if (isglobal)
+ ms_type = mst_text;
+ else
+ ms_type = mst_file_text;
+ }
+ else if (sym_shndx == SHN_MIPS_DATA)
+ {
+ if (isglobal)
+ ms_type = mst_data;
+ else
+ ms_type = mst_file_data;
+ }
+ else if (sym_shndx == SHN_MIPS_ACOMMON)
+ {
+ if (isglobal)
+ ms_type = mst_bss;
+ else
+ ms_type = mst_file_bss;
+ }
+ else if (sym_shndx == SHN_ABS)
+ {
+ ms_type = mst_abs;
+ }
else
- type_code = TYPE_CODE_STRUCT;
-
- /* If this type was expected, use its partial definition */
- pend = is_pending_symbol (cur_fdr, ext_sh);
- if (pend != (struct mips_pending *) NULL)
- t = pend->t;
- else
- t = new_type (NULL);
-
- TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack,
- "", "", name);
- 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)));
- /* Handle opaque struct definitions. */
- if (TYPE_NFIELDS (t) == 0)
- {
- TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
- SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
- }
+ {
+ continue;
+ }
+ }
- if (type_code == TYPE_CODE_ENUM)
- {
- /* This is a non-empty enum. */
- for (ext_tsym = ext_sh + external_sym_size;
- ;
- ext_tsym += external_sym_size)
- {
- SYMR tsym;
- struct symbol *enum_sym;
+ reader.record (name, sym_value, ms_type);
+ }
+}
- (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
-
- if (tsym.st != stMember)
- break;
-
- f->bitpos = tsym.value;
- f->type = t;
- f->name = (ecoff_data (cur_bfd)->ss
- + cur_fdr->issBase
- + 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;
- sh->st = stParsed;
- 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 || sh->sc == scCommon)
- {
- /* 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 = name;
- f->bitpos = sh->value;
- f->bitsize = 0;
- f->type = parse_type (ax + sh->index, &f->bitsize, bigend, name);
- break;
-
- case stTypedef: /* type definition */
- s = new_symbol (name);
- 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, name);
- sh->value = (long) SYMBOL_TYPE (s);
- sh->st = stParsed;
- if (TYPE_TAG_NAME (SYMBOL_TYPE (s)) != NULL
- && STREQ (TYPE_TAG_NAME (SYMBOL_TYPE (s)), "<undefined>"))
- {
- /* mips cc puts out a stTypedef for opaque struct definitions. */
- TYPE_FLAGS (SYMBOL_TYPE (s)) |= TYPE_FLAG_STUB;
- }
- /* Incomplete definitions of structs should not get a name. */
- if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
- && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
- || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
- && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
- {
- if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
- || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
- {
- /* If we are giving a name to a type such as "pointer to
- foo" or "function returning foo", we better not set
- the TYPE_NAME. If the program contains "typedef char
- *caddr_t;", we don't want all variables of type char
- * to print as caddr_t. This is not just a
- consequence of GDB's type management; CC and GCC (at
- least through version 2.4) both output variables of
- either type char * or caddr_t with the type
- refering to the stTypedef symbol for caddr_t. If a future
- compiler cleans this up it GDB is not ready for it
- yet, but if it becomes ready we somehow need to
- disable this check (without breaking the PCC/GCC2.4
- case).
-
- Sigh.
-
- Fortunately, this check seems not to be necessary
- for anything except pointers or functions. */
- }
- else
- TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (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;
- }
-
- 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, sym_name)
- union aux_ext *ax;
- int *bs;
- int bigend;
- char *sym_name;
-{
- /* 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;
- union aux_ext *tax;
- enum type_code type_code = TYPE_CODE_UNDEF;
-
- /* 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, sym_name);
- return builtin_type_int;
- }
- if (map_bt[t->bt])
- {
- tp = *map_bt[t->bt];
- }
- else
- {
- tp = NULL;
- /* Cannot use builtin types -- build our own */
- switch (t->bt)
- {
- case btAdr:
- tp = lookup_pointer_type (builtin_type_void);
- break;
- case btStruct:
- type_code = TYPE_CODE_STRUCT;
- break;
- case btUnion:
- type_code = TYPE_CODE_UNION;
- break;
- case btEnum:
- type_code = TYPE_CODE_ENUM;
- break;
- case btRange:
- type_code = TYPE_CODE_RANGE;
- break;
- case btSet:
- type_code = TYPE_CODE_SET;
- break;
- case btTypedef:
- default:
- complain (&basic_type_complaint, t->bt, sym_name);
- 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->a_ti, t1);
- }
- while (t1->continued);
- }
-
- /* Move on to next aux */
- ax++;
-
- if (t->fBitfield)
- {
- /* Inhibit core dumps with some cfront generated objects that
- corrupt the TIR. */
- if (bs == (int *)NULL)
- {
- complain (&bad_fbitfield_complaint, sym_name);
- return builtin_type_int;
- }
- *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 == btStruct ||
- t->bt == btUnion ||
- t->bt == btEnum ||
-
- /* btSet (I think) implies that the name is a tag name, not a typedef
- name. This apparently is a MIPS extension for C sets. */
- t->bt == btSet)
- {
- char *name;
-
- /* Try to cross reference this type */
- ax += cross_ref (ax, &tp, type_code, &name, bigend, sym_name);
- /* reading .o file ? */
- if (tp == (struct type *) NULL)
- tp = init_type (type_code, 0, 0, (char *) NULL,
- (struct objfile *) NULL);
-
- /* Make sure that TYPE_CODE(tp) has an expected type code.
- Any type may be returned from cross_ref if file indirect entries
- are corrupted. */
- if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
- && TYPE_CODE (tp) != TYPE_CODE_UNION
- && TYPE_CODE (tp) != TYPE_CODE_ENUM)
- {
- complain (&unexpected_type_code_complaint, sym_name);
- }
- else
- {
-
- /* 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, sym_name);
- TYPE_CODE (tp) = type_code;
- }
- /* Do not set the tag name if it is a compiler generated tag name
- (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
- if (name[0] == '.' || name[0] == '\0')
- TYPE_TAG_NAME (tp) = NULL;
- else if (TYPE_TAG_NAME (tp) == NULL
- || !STREQ (TYPE_TAG_NAME (tp), name))
- TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),
- ¤t_objfile->type_obstack);
- }
- }
-
- /* 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.
- FIXME: btIndirect cannot happen here as it is handled by the
- switch t->bt above. And we are not doing any guessing on range types. */
- if (t->bt == btIndirect ||
- t->bt == btRange)
- {
- char *name;
-
- /* Try to cross reference this type */
- ax += cross_ref (ax, &tp, type_code, &name, bigend, sym_name);
- /* reading .o file ? */
- if (tp == (struct type *) NULL)
- tp = init_type (type_code, 0, 0, (char *) NULL,
- (struct objfile *) NULL);
-
- /* Make sure that TYPE_CODE(tp) has an expected type code.
- Any type may be returned from cross_ref if file indirect entries
- are corrupted. */
- if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
- {
- complain (&unexpected_type_code_complaint, sym_name);
- }
- else
- {
- /* 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, sym_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->a_rndx, &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 ((ecoff_data (cur_bfd)->external_aux
- + fh->iauxBase
- + id),
- (int *) NULL, bigend, "<array index>");
-
- /* 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. FIRST_OFF is
- the offset of the first procedure for this FDR; we adjust the
- address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
- to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
- in question, or NULL to use top_stack->cur_block. */
-
-static void parse_procedure PARAMS ((PDR *, struct symtab *, unsigned long));
-
-static void
-parse_procedure (pr, search_symtab, first_off)
- PDR *pr;
- struct symtab *search_symtab;
- unsigned long first_off;
-{
- struct symbol *s, *i;
- struct block *b;
- struct mips_extra_func_info *e;
- char *sh_name;
-
- /* Simple rule to find files linked "-x" */
- if (cur_fdr->rss == -1)
- {
- if (pr->isym == -1)
- {
- /* Static procedure at address pr->adr. Sigh. */
- complain (&pdr_static_symbol_complaint, pr->adr);
- return;
- }
- else
- {
- /* external */
- EXTR she;
-
- (*ecoff_backend (cur_bfd)->swap_ext_in)
- (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_ext
- + pr->isym * ecoff_backend (cur_bfd)->external_ext_size),
- &she);
- sh_name = ecoff_data (cur_bfd)->ssext + she.asym.iss;
- }
- }
- else
- {
- /* Full symbols */
- SYMR sh;
-
- (*ecoff_backend (cur_bfd)->swap_sym_in)
- (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + ((cur_fdr->isymBase + pr->isym)
- * ecoff_backend (cur_bfd)->external_sym_size)),
- &sh);
- sh_name = ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh.iss;
- }
-
- if (search_symtab != NULL)
- {
-#if 0
- /* This loses both in the case mentioned (want a static, find a global),
- but also if we are looking up a non-mangled name which happens to
- match the name of a mangled function. */
- /* We have to save the cur_fdr across the call to lookup_symbol.
- If the pdr is for a static function and if a global function with
- the same name exists, lookup_symbol will eventually read in the symtab
- for the global function and clobber cur_fdr. */
- FDR *save_cur_fdr = cur_fdr;
- s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
- cur_fdr = save_cur_fdr;
-#else
- s = mylookup_symbol
- (sh_name,
- BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),
- VAR_NAMESPACE,
- LOC_BLOCK);
-#endif
- }
- 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;
- /* BOUND used to be the end of procedure's text, but the
- argument is no longer passed in. */
- 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;
- e->pdr.adr += cur_fdr->adr - first_off;
-
- /* Correct incorrect setjmp procedure descriptor from the library
- to make backtrace through setjmp work. */
- if (e->pdr.pcreg == 0 && strcmp (sh_name, "setjmp") == 0)
- {
- complain (&bad_setjmp_pdr_complaint, 0);
- e->pdr.pcreg = RA_REGNUM;
- e->pdr.regmask = 0x80000000;
- e->pdr.regoffset = -4;
- }
- }
-}
-
-/* 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 = ecoff_data (cur_bfd)->fdr + cur_fd;
- ax = ecoff_data (cur_bfd)->external_aux + cur_fdr->iauxBase;
- }
- else
- {
- cur_fdr = ecoff_data (cur_bfd)->fdr;
- 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,
- ecoff_data (cur_bfd)->ssext + es->asym.iss,
- fdr_name (cur_fdr));
- return;
- }
-
- switch (es->asym.st)
- {
- case stProc:
- /* If we have full symbols we do not need more */
- if (skip_procedures)
- return;
- if (mylookup_symbol (ecoff_data (cur_bfd)->ssext + 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, (char *) NULL, bigend);
- /* Note that parse_symbol changed es->asym. */
- 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, pr, lt)
- FDR *fh;
- PDR *pr;
- struct linetable *lt;
-{
- unsigned char *base;
- int j, k;
- int delta, count, lineno = 0;
- unsigned long first_off = pr->adr;
-
- if (fh->cbLine == 0)
- return;
-
- base = ecoff_data (cur_bfd)->line + fh->cbLineOffset;
-
- /* Scan by procedure descriptors */
- k = 0;
- for (j = 0; j < fh->cpd; j++, pr++)
- {
- int l, halt;
- unsigned long adr;
-
- /* 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 = ecoff_data (cur_bfd)->line + fh->cbLineOffset + pr->cbLineOffset;
- adr = fh->adr + pr->adr - first_off;
- l = adr >> 2; /* in words */
- halt += (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;
- }
- }
-}
-\f
-/* Master parsing procedure for first-pass reading of file symbols
- into a partial_symtab. */
-
-static void
-parse_partial_symbols (objfile, section_offsets)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
-{
- const struct ecoff_backend_data * const backend = ecoff_backend (cur_bfd);
- const bfd_size_type external_sym_size = backend->external_sym_size;
- const bfd_size_type external_rfd_size = backend->external_rfd_size;
- const bfd_size_type external_ext_size = backend->external_ext_size;
- void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *))
- = backend->swap_ext_in;
- void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
- = backend->swap_sym_in;
- void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *))
- = backend->swap_rfd_in;
- int f_idx, s_idx;
- HDRR *hdr = &ecoff_data (cur_bfd)->symbolic_header;
- /* Running pointers */
- FDR *fh;
- char *ext_out;
- char *ext_out_end;
- EXTR *ext_block;
- register EXTR *ext_in;
- EXTR *ext_in_end;
- 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;
- enum language prev_language;
-
- 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;
- }
-
- /* Allocate the global pending list. */
- ECOFF_PENDING_LIST (objfile) =
- ((struct mips_pending **)
- obstack_alloc (&objfile->psymbol_obstack,
- hdr->ifdMax * sizeof (struct mips_pending *)));
- memset ((PTR) ECOFF_PENDING_LIST (objfile), 0,
- hdr->ifdMax * sizeof (struct mips_pending *));
-
- /* Pass 0 over external syms: swap them in. */
- ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));
- make_cleanup (free, ext_block);
-
- ext_out = (char *) ecoff_data (cur_bfd)->external_ext;
- ext_out_end = ext_out + hdr->iextMax * external_ext_size;
- ext_in = ext_block;
- for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
- (*swap_ext_in) (cur_bfd, ext_out, ext_in);
-
- /* Pass 1 over external syms: Presize and partition the list */
- ext_in = ext_block;
- ext_in_end = ext_in + hdr->iextMax;
- for (; ext_in < ext_in_end; ext_in++)
- fdr_to_pst[ext_in->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 */
- ext_in = ext_block;
- ext_in_end = ext_in + hdr->iextMax;
- for (; ext_in < ext_in_end; ext_in++)
- {
- enum minimal_symbol_type ms_type = mst_text;
-
- extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
- + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
-
- if (ext_in->asym.sc == scUndefined || ext_in->asym.sc == scNil)
- continue;
-
- name = ecoff_data (cur_bfd)->ssext + ext_in->asym.iss;
- switch (ext_in->asym.st)
- {
- case stProc:
- break;
- case stGlobal:
- if (ext_in->asym.sc == scData
- || ext_in->asym.sc == scSData
- || ext_in->asym.sc == scRData)
- ms_type = mst_data;
- else
- ms_type = mst_bss;
- break;
- case stLabel:
- if (ext_in->asym.sc == scAbs)
- ms_type = mst_abs;
- else if (ext_in->asym.sc == scText)
- ms_type = mst_text;
- else if (ext_in->asym.sc == scData
- || ext_in->asym.sc == scSData
- || ext_in->asym.sc == scRData)
- ms_type = mst_data;
- else
- ms_type = mst_bss;
- break;
- default:
- ms_type = mst_unknown;
- complain (&unknown_ext_complaint, name);
- }
- prim_record_minimal_symbol (name, ext_in->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 = ecoff_data (cur_bfd)->fdr + f_idx;
-
- if (fh->csym == 0)
- {
- fdr_to_pst[f_idx].pst = NULL;
- continue;
- }
- pst = start_psymtab_common (objfile, section_offsets,
- fdr_name (fh),
- 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)));
- memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc));
-
- save_pst = pst;
- FDR_IDX (pst) = f_idx;
- CUR_BFD (pst) = cur_bfd;
-
- /* The way to turn this into a symtab is to call... */
- pst->read_symtab = mipscoff_psymtab_to_symtab;
-
- /* Set up language for the pst.
- The language from the FDR is used if it is unambigious (e.g. cfront
- with native cc and g++ will set the language to C).
- Otherwise we have to deduce the language from the filename.
- Native ecoff has every header file in a separate FDR, so
- deduce_language_from_filename will return language_unknown for
- a header file, which is not what we want.
- But the FDRs for the header files are after the FDR for the source
- file, so we can assign the language of the source file to the
- following header files. Then we save the language in the private
- pst data so that we can reuse it when building symtabs. */
- prev_language = psymtab_language;
-
- switch (fh->lang)
- {
- case langCplusplusV2:
- psymtab_language = language_cplus;
- break;
- default:
- psymtab_language = deduce_language_from_filename (fdr_name (fh));
- break;
- }
- if (psymtab_language == language_unknown)
- psymtab_language = prev_language;
- PST_PRIVATE (pst)->pst_language = psymtab_language;
-
- 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). */
- processing_gcc_compilation = 0;
- if (fh->csym >= 2)
- {
- (*swap_sym_in) (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + (fh->isymBase + 1) * external_sym_size),
- &sh);
- if (STREQ (ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss,
- stabs_symbol))
- processing_gcc_compilation = 2;
- }
-
- if (processing_gcc_compilation != 0)
- {
- for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
- {
- int type_code;
- char *namestring;
-
- (*swap_sym_in) (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + (fh->isymBase + cur_sdx) * external_sym_size),
- &sh);
- type_code = ECOFF_UNMARK_STAB (sh.index);
- if (!ECOFF_IS_STAB (&sh))
- {
- if (sh.st == stProc || sh.st == stStaticProc)
- {
- long procaddr = sh.value;
- long isym;
-
-
- isym = AUX_GET_ISYM (fh->fBigendian,
- (ecoff_data (cur_bfd)->external_aux
- + fh->iauxBase
- + sh.index));
- (*swap_sym_in) (cur_bfd,
- (((char *)
- ecoff_data (cur_bfd)->external_sym)
- + ((fh->isymBase + isym - 1)
- * external_sym_size)),
- &sh);
- if (sh.st == stEnd)
- {
- long high = procaddr + sh.value;
- if (high > pst->texthigh)
- pst->texthigh = high;
- }
- }
- continue;
- }
-#define SET_NAMESTRING() \
- namestring = ecoff_data (cur_bfd)->ss + fh->issBase + 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
- {
- for (cur_sdx = 0; cur_sdx < fh->csym;)
- {
- char *name;
- enum address_class class;
-
- (*swap_sym_in) (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + ((fh->isymBase + cur_sdx)
- * external_sym_size)),
- &sh);
-
- if (ECOFF_IS_STAB (&sh))
- {
- cur_sdx++;
- continue;
- }
-
- /* Non absolute static symbols go into the minimal table. */
- if (sh.sc == scUndefined || sh.sc == scNil
- || (sh.index == indexNil
- && (sh.st != stStatic || sh.sc == scAbs)))
- {
- /* FIXME, premature? */
- cur_sdx++;
- continue;
- }
-
- name = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss;
-
- switch (sh.st)
- {
- long high;
- long procaddr;
- int new_sdx;
-
- case stStaticProc: /* Function */
- /* I believe this is used only for file-local functions.
- The comment in symconst.h ("load time only static procs")
- isn't particularly clear on this point. */
- prim_record_minimal_symbol (name, sh.value, mst_file_text);
- /* FALLTHROUGH */
-
- case stProc: /* Asm labels apparently */
- 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,
- (ecoff_data (cur_bfd)->external_aux
- + fh->iauxBase
- + sh.index));
- 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;
- (*swap_sym_in) (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + ((fh->isymBase + cur_sdx - 1)
- * external_sym_size)),
- &sh);
- if (sh.st != stEnd)
- continue;
- high = procaddr + sh.value;
- if (high > pst->texthigh)
- pst->texthigh = high;
- continue;
-
- case stStatic: /* Variable */
- if (sh.sc == scData || sh.sc == scSData || sh.sc == scRData)
- prim_record_minimal_symbol (name, sh.value, mst_file_data);
- else
- prim_record_minimal_symbol (name, sh.value, mst_file_bss);
- 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 || sh.sc == scCommon)
- {
- 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, name);
- 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++)
- {
- enum address_class class;
- SYMR *psh;
- char *name;
-
- if (ext_ptr->ifd != f_idx)
- abort ();
- psh = &ext_ptr->asym;
- switch (psh->st)
- {
- case stProc:
- class = LOC_BLOCK;
- break;
- case stLabel:
- class = LOC_LABEL;
- break;
- default:
- complain (&unknown_ext_complaint,
- ecoff_data (cur_bfd)->ssext + psh->iss);
- /* Fall through, pretend it's global. */
- case stGlobal:
- class = LOC_STATIC;
- break;
- }
- name = ecoff_data (cur_bfd)->ssext + psh->iss;
- ADD_PSYMBOL_ADDR_TO_LIST (name, strlen (name),
- VAR_NAMESPACE, class,
- objfile->global_psymbols, (CORE_ADDR) psh->value,
- psymtab_language, objfile);
- }
- }
-
- /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
- empty and put on the free list. */
- fdr_to_pst[f_idx].pst = 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;
- }
- }
-
- /* Now scan the FDRs for dependencies */
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
- {
- fh = f_idx + ecoff_data (cur_bfd)->fdr;
- pst = fdr_to_pst[f_idx].pst;
-
- if (pst == (struct partial_symtab *)NULL)
- continue;
-
- /* This should catch stabs-in-ecoff. */
- if (fh->crfd <= 1)
- continue;
-
- /* Skip the first file indirect entry as it is a self dependency
- for source files or a reverse .h -> .c dependency for header files. */
- pst->number_of_dependencies = 0;
- pst->dependencies =
- ((struct partial_symtab **)
- obstack_alloc (&objfile->psymbol_obstack,
- ((fh->crfd - 1)
- * sizeof (struct partial_symtab *))));
- for (s_idx = 1; s_idx < fh->crfd; s_idx++)
- {
- RFDT rh;
-
- (*swap_rfd_in) (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_rfd
- + (fh->rfdBase + s_idx) * external_rfd_size),
- &rh);
- if (rh < 0 || rh >= hdr->ifdMax)
- {
- complain (&bad_file_number_complaint, rh);
- continue;
- }
-
- /* Skip self dependencies of header files. */
- if (rh == f_idx)
- continue;
-
- /* Do not add to dependeny list if psymtab was empty. */
- if (fdr_to_pst[rh].pst == (struct partial_symtab *)NULL)
- continue;
- pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;
- }
- }
- do_cleanups (old_chain);
-}
-
-
-static char *
-mips_next_symbol_text ()
-{
- SYMR sh;
-
- cur_sdx++;
- (*ecoff_backend (cur_bfd)->swap_sym_in)
- (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + ((cur_fdr->isymBase + cur_sdx)
- * ecoff_backend (cur_bfd)->external_sym_size)),
- &sh);
- return ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh.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;
-{
- const bfd_size_type external_sym_size
- = ecoff_backend (cur_bfd)->external_sym_size;
- const bfd_size_type external_pdr_size
- = ecoff_backend (cur_bfd)->external_pdr_size;
- void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
- = ecoff_backend (cur_bfd)->swap_sym_in;
- void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
- = ecoff_backend (cur_bfd)->swap_sym_out;
- void (* const swap_pdr_in) PARAMS ((bfd *, PTR, PDR *))
- = ecoff_backend (cur_bfd)->swap_pdr_in;
- int i;
- struct symtab *st;
- FDR *fh;
- struct linetable *lines;
-
- 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);
- }
-
- /* Do nothing if this is a dummy psymtab. */
-
- if (pst->n_global_syms == 0 && pst->n_static_syms == 0
- && pst->textlow == 0 && pst->texthigh == 0)
- return;
-
- /* Now read the symbols for this symtab */
-
- cur_bfd = CUR_BFD (pst);
- current_objfile = pst->objfile;
- cur_fd = FDR_IDX (pst);
- fh = (cur_fd == -1) ? (FDR *) NULL : ecoff_data (cur_bfd)->fdr + cur_fd;
- cur_fdr = fh;
-
- /* See comment in parse_partial_symbols about the @stabs sentinel. */
- processing_gcc_compilation = 0;
- if (fh != (FDR *) NULL && fh->csym >= 2)
- {
- SYMR sh;
-
- (*swap_sym_in) (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + (fh->isymBase + 1) * external_sym_size),
- &sh);
- if (STREQ (ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss,
- stabs_symbol))
- {
- /* We indicate that this is a GCC compilation so that certain
- features will be enabled in stabsread/dbxread. */
- processing_gcc_compilation = 2;
- }
- }
-
- if (processing_gcc_compilation != 0)
- {
- char *pdr_ptr;
- char *pdr_end;
- int first_pdr;
- unsigned long first_off = 0;
-
- /* This symbol table contains stabs-in-ecoff entries. */
-
- /* 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++)
- {
- SYMR sh;
- char *name;
- CORE_ADDR valu;
-
- (*swap_sym_in) (cur_bfd,
- ((char *) ecoff_data (cur_bfd)->external_sym
- + (fh->isymBase + cur_sdx) * external_sym_size),
- &sh);
- name = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss;
- valu = sh.value;
- if (ECOFF_IS_STAB (&sh))
- {
- int type_code = ECOFF_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 if (sh.st == stProc || sh.st == stStaticProc || sh.st == stEnd)
- /* These are generated by gcc-2.x, do not complain */
- ;
- else
- complain (&stab_unknown_complaint, name);
- }
- st = end_symtab (pst->texthigh, 0, 0, pst->objfile, SECT_OFF_TEXT);
- 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. */
- first_pdr = 1;
- pdr_ptr = ((char *) ecoff_data (cur_bfd)->external_pdr
- + fh->ipdFirst * external_pdr_size);
- pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
- for (; pdr_ptr < pdr_end; pdr_ptr += external_pdr_size)
- {
- PDR pr;
-
- (*swap_pdr_in) (cur_bfd, pdr_ptr, &pr);
- if (first_pdr)
- {
- first_off = pr.adr;
- first_pdr = 0;
- }
- parse_procedure (&pr, st, first_off);
- }
- }
- else
- {
- /* This symbol table contains ordinary ecoff entries. */
-
- /* FIXME: doesn't use pst->section_offsets. */
-
- int f_max;
- int maxlines;
- EXTR *ext_ptr;
-
- /* 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);
-
- /* The proper language was already determined when building
- the psymtab, use it. */
- st->language = PST_PRIVATE (pst)->pst_language;
- }
-
- psymtab_language = st->language;
-
- lines = LINETABLE (st);
-
- /* 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)
- {
- char *sym_ptr;
- char *sym_end;
-
- /* Parse local symbols first */
- sym_ptr = ((char *) ecoff_data (cur_bfd)->external_sym
- + fh->isymBase * external_sym_size);
- sym_end = sym_ptr + fh->csym * external_sym_size;
- while (sym_ptr < sym_end)
- {
- SYMR sh;
- int c;
-
- (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
- c = parse_symbol (&sh,
- (ecoff_data (cur_bfd)->external_aux
- + fh->iauxBase),
- sym_ptr, fh->fBigendian);
- /* FIXME: We must swap the modified symbol back out,
- although we would rather not. See parse_symbol. */
- (*swap_sym_out) (cur_bfd, &sh, sym_ptr);
- sym_ptr += c * external_sym_size;
- }
-
- /* Linenumbers. At the end, check if we can save memory.
- parse_lines has to look ahead an arbitrary number of PDR
- structures, so we swap them all first. */
- if (fh->cpd > 0)
- {
- PDR *pr_block;
- struct cleanup *old_chain;
- char *pdr_ptr;
- char *pdr_end;
- PDR *pdr_in;
- PDR *pdr_in_end;
-
- pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
-
- old_chain = make_cleanup (free, pr_block);
-
- pdr_ptr = ((char *) ecoff_data (cur_bfd)->external_pdr
- + fh->ipdFirst * external_pdr_size);
- pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
- pdr_in = pr_block;
- for (;
- pdr_ptr < pdr_end;
- pdr_ptr += external_pdr_size, pdr_in++)
- (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
-
- parse_lines (fh, pr_block, lines);
- if (lines->nitems < fh->cline)
- lines = shrink_linetable (lines);
-
- /* Fill in procedure info next. */
- pdr_in = pr_block;
- pdr_in_end = pdr_in + fh->cpd;
- for (; pdr_in < pdr_in_end; pdr_in++)
- parse_procedure (pdr_in, 0, pr_block->adr);
-
- do_cleanups (old_chain);
- }
- }
-
- 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 = (ecoff_data (cur_bfd)->symbolic_header.isymMax
- + ecoff_data (cur_bfd)->symbolic_header.ipdMax
- + ecoff_data (cur_bfd)->symbolic_header.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;
-}
-\f
-/* 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, sym_name)
- 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;
- char *sym_name;
-{
- RNDXR rn[1];
- unsigned int rf;
- int result = 1;
-
- ecoff_swap_rndx_in (bigend, &ax->a_rndx, 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);
- char *esh;
- SYMR sh;
- struct type *t;
-
- if (rn->index >= fh->csym)
- {
- /* File indirect entry is corrupt. */
- *tpp = (struct type *)NULL;
- *pname = "<illegal>";
- complain (&bad_rfd_entry_complaint,
- sym_name, fh - ecoff_data (cur_bfd)->fdr, rn->index);
- return result;
- }
-
- /* 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 will be. In any event, we collect the name for the
- type here. Which is why we made a first pass at strings. */
-
- esh = ((char *) ecoff_data (cur_bfd)->external_sym
- + ((fh->isymBase + rn->index)
- * ecoff_backend (cur_bfd)->external_sym_size));
- (*ecoff_backend (cur_bfd)->swap_sym_in) (cur_bfd, esh, &sh);
-
- /* Careful, we might be looking at .o files */
- if (sh.iss == 0)
- *pname = "<undefined>";
- else if (rn->rfd == 0xfff && rn->index == 0)
- /* For structs, unions and enums, rn->rfd is 0xfff and the index
- is a relative symbol number for the type, but an index of 0
- seems to mean that we don't know. This is said to fix a problem
- with "info func opendir" on an SGI showing
- "struct BSDopendir.c *BSDopendir();". */
- {
- *tpp = (struct type *)NULL;
- *pname = "<unknown>";
- return result;
- }
- else if ((sh.st != stBlock && sh.st != stTypedef && sh.st != stParsed)
- || sh.sc != scInfo)
- {
- /* File indirect entry is corrupt. */
- *tpp = (struct type *)NULL;
- *pname = "<illegal>";
- complain (&bad_rfd_entry_complaint,
- sym_name, fh - ecoff_data (cur_bfd)->fdr, rn->index);
- return result;
- }
- else
- *pname = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss;
-
- /* Have we parsed it ? */
- if (sh.value != 0 && sh.st == stParsed)
- {
- t = (struct type *) sh.value;
- *tpp = t;
- }
- else
- {
- /* Avoid duplicates */
- struct mips_pending *p = is_pending_symbol (fh, esh);
- if (p)
- *tpp = p->t;
- else
- {
- *tpp = init_type (type_code, 0, 0, (char *) NULL,
- (struct objfile *) NULL);
- add_pending (fh, esh, *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
- && strcmp (SYMBOL_NAME (sym), name) == 0)
- 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.
-
- Combining lines with the same line number seems like a bad idea.
- E.g: There could be a line number entry with the same line number after the
- prologue and GDB should not ignore it (this is a better way to find
- a prologue than mips_skip_prologue).
- But due to the compressed line table format there are line number entries
- for the same line which are needed to bridge the gap to the next
- line number entry. These entries have a bogus address info with them
- and we are unable to tell them from intended duplicate line number
- entries.
- This is another reason why -ggdb debugging format is preferable. */
-
-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;
-}
-\f
-/* 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 ((*b2))) - (BLOCK_END ((*b1)));
- 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));
-}
-\f
-
-/* 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;
-
- psymtab = allocate_psymtab (name, objfile);
-
- /* Keep a backpointer to the file's symbols */
-
- psymtab->read_symtab_private = ((char *)
- obstack_alloc (&objfile->psymbol_obstack,
- sizeof (struct symloc)));
- memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc));
- CUR_BFD (psymtab) = cur_bfd;
-
- /* 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;
- SYMBOL_LANGUAGE (s) = psymtab_language;
- SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack);
- 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;
-}
-\f
-
-/* 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 = NULL;
-
- sigtramp_address = -1;
-
- /* We have to handle the following cases here:
- a) The Mips library has a sigtramp label within sigvec.
- b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
- s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
- if (s != 0)
- {
- b0 = SYMBOL_BLOCK_VALUE (s);
- s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
- }
- if (s == 0)
- {
- /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
- s = lookup_symbol ("_sigtramp", 0, 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;
- /* read_next_frame_reg provides the true pc at the time of signal */
- e->pdr.pcreg = PC_REGNUM;
- e->pdr.regmask = -2;
- e->pdr.regoffset = -(41 * sizeof (int));
- e->pdr.fregmask = -1;
- e->pdr.fregoffset = -(7 * sizeof (int));
- e->pdr.isym = (long) s;
- e->pdr.adr = sigtramp_address;
-
- 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;
-}
-\f
-/* 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 */
-};
+/* Initialization. */
+static const struct sym_fns ecoff_sym_fns =
+{
+ mipscoff_new_init, /* init anything gbl to entire symtab */
+ mipscoff_symfile_init, /* read initial info, setup for sym_read() */
+ mipscoff_symfile_read, /* read a symbol file into symtab */
+ NULL, /* sym_read_psymbols */
+ mipscoff_symfile_finish, /* finished with file, cleanup */
+ default_symfile_offsets, /* dummy FIXME til implem sym reloc */
+ default_symfile_segments, /* Get segment information from a file. */
+ NULL,
+ default_symfile_relocate, /* Relocate a debug section. */
+ NULL, /* sym_probe_fns */
+ &psym_functions
+};
+void _initialize_mipsread ();
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);
+ add_symtab_fns (bfd_target_ecoff_flavour, &ecoff_sym_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff