/* Read a symbol table in MIPS' format (Third-Eye).
- Copyright (C) 1986, 1987, 1989-1991 Free Software Foundation, Inc.
- Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU
+ 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.
-GDB is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-GDB is distributed in the hope that it will be useful,
+This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* This module provides three functions: mipscoff_symfile_init,
+ which initializes to read a symbol file; mipscoff_new_init, which
+ discards existing cached information when all symbols are being
+ discarded; and mipscoff_symfile_read, which reads a symbol table
+ from a file.
+
+ mipscoff_symfile_read only does the minimum work necessary for letting the
+ user "name" things symbolically; it does not read the entire symtab.
+ Instead, it reads the external and static symbols and puts them in partial
+ symbol tables. When more extensive information is requested of a
+ file, the corresponding partial symbol table is mutated into a full
+ fledged symbol table by going back and reading the symbols
+ for real. mipscoff_psymtab_to_symtab() is called indirectly through
+ a pointer in the psymtab to do this.
+
+ ECOFF symbol tables are mostly written in the byte order of the
+ target machine. However, one section of the table (the auxiliary
+ symbol information) is written in the host byte order. There is a
+ bit in the other symbol info which describes which host byte order
+ was used. ECOFF thereby takes the trophy from Intel `b.out' for
+ the most brain-dead adaptation of a file format to byte order.
+
+ This module can read all four of the known byte-order combinations,
+ on any type of host. */
-#include <stdio.h>
-#include "param.h"
-#include "obstack.h"
-#include <sys/param.h>
-#include <sys/file.h>
-#include <sys/stat.h>
#include "defs.h"
#include "symtab.h"
+#include "gdbtypes.h"
#include "gdbcore.h"
#include "symfile.h"
-#ifdef CMUCS
-#include <mips/syms.h>
-#else /* not CMUCS */
-#include <syms.h>
-#endif /* not CMUCS */
-
-/* Since these things are defined differently on various systems I'll
- (re)define here what I really need in this module. I only assume the
- three standard COFF structure definitions: filehdr, aouthdr, scnhdr */
-#define MIPS /* Kludge to get MIPS version of coff */
-#include "intel-coff.h"
-
-struct coff_exec {
- struct filehdr f;
- struct aouthdr a;
-};
-#undef a_magic
-#undef a_text
-#undef a_data
-#undef a_bss
-#undef a_syms
-#undef a_entry
-#define a_magic a.magic /* magic number */
-#define a_text a.tsize /* size of text segment */
-#define a_data a.dsize /* size of initialized data */
-#define a_bss a.bsize /* size of uninitialized data */
-#define a_syms f.f_nsyms /* size of symbol table */
-#define a_entry a.entry /* entry point */
-
-#undef N_BADMAG
-#define N_BADMAG(x) \
- (((x).a_magic)!=OMAGIC && ((x).a_magic)!=NMAGIC && ((x).a_magic)!=ZMAGIC)
-
-/* Things we import explicitly from other modules */
-
-extern int info_verbose;
-extern struct block *block_for_pc();
-extern void sort_symtab_syms();
-
-/* Forward declarations */
-
-static void psymtab_to_symtab_1();
-
-/* Macros and extra defs */
-
-struct complaint unknown_ext_complaint =
- {"unknown external symbol %s", 0, 0};
-
-/* Already parsed symbols are marked specially */
-
-#define stParsed stType
+#include "objfiles.h"
+#include "obstack.h"
+#include "buildsym.h"
+#include "stabsread.h"
+#include "complaints.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
+#endif
-/* Puns: hard to find whether -g was used and how */
+#ifdef USG
+#include <sys/types.h>
+#endif
-#define MIN_GLEVEL GLEVEL_0
-#define compare_glevel(a,b) \
- (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
- ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
+#include <sys/param.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <string.h>
-/* When looking at .o files avoid tripping over bad addresses */
+#include "gdb-stabs.h"
-#define SAFE_TEXT_ADDR 0x400000
-#define SAFE_DATA_ADDR 0x10000000
+#include "bfd.h"
-#define UNSAFE_DATA_ADDR(p) ((unsigned)p < SAFE_DATA_ADDR || (unsigned)p > 2*SAFE_DATA_ADDR)
+#include "coff/internal.h"
+#include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
-\f
-/* Things we export to other modules */
+/* 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 */
-/* Lists of partial symbols */
+/* FIXME: libcoff.h and libaout.h both define a couple of macros. We
+ don't use them. */
+#undef exec_hdr
+#undef obj_sym_filepos
-struct psymbol_allocation_list global_psymbols, static_psymbols;
+#include "libcoff.h" /* Private BFD COFF information. */
+#include "libecoff.h" /* Private BFD ECOFF information. */
-/* Address bounds for the signal trampoline in inferior, if any */
+#include "expression.h"
+#include "language.h" /* Needed inside partial-stab.h */
-CORE_ADDR sigtramp_address, sigtramp_end;
+/* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
+#ifndef ECOFF_REG_TO_REGNUM
+#define ECOFF_REG_TO_REGNUM(num) (num)
+#endif
+/* 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. */
-/* Functions that we really export */
+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)
+
-/* THIS DESCRIPTION IS OBSOLETE POST-BFD; FIXME! */
-/* Basically, this module must provide two functions: symbol_file_command()
- which loads the symbol table from a file, and add_file_command() which
- adds more symbols to the symbol table (incrementally).
+/* 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.
- These two functions only do the minimum work necessary for letting the
- user "name" things symbolically, they do not read the entire symtab.
- Instead, they read in the external symbols and put 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 relative symbols
- for real. mipscoff_psymtab_to_symtab() is the function that does this */
+ 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. */
-/* The entry point (starting address) of the file, if it is an executable. */
+#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)
-static CORE_ADDR entry_point;
+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;
+};
-extern CORE_ADDR startup_file_start; /* From blockframe.c */
-extern CORE_ADDR startup_file_end; /* From blockframe.c */
+/* Things we import explicitly from other modules */
-void
-mipscoff_new_init()
-{
-}
+extern int info_verbose;
-void
-mipscoff_symfile_init (sf)
- struct sym_fns *sf;
-{
- bfd *abfd = sf->sym_bfd;
- sf->sym_private = NULL;
- /* Save startup file's range of PC addresses to help blockframe.c
- decide where the bottom of the stack is. */
- if (bfd_get_file_flags (abfd) & EXEC_P)
- {
- /* Executable file -- record its entry point so we'll recognize
- the startup file because it contains the entry point. */
- entry_point = bfd_get_start_address (abfd);
- }
- else
- {
- /* Examination of non-executable.o files. Short-circuit this stuff. */
- /* ~0 will not be in any file, we hope. */
- entry_point = ~0;
- /* set the startup file to be an empty range. */
- startup_file_start = 0;
- startup_file_end = 0;
- }
-}
+/* Various complaints about symbol reading that don't abort the process */
-void
-mipscoff_symfile_read(sf, addr, mainline)
- struct sym_fns *sf;
- CORE_ADDR addr;
- int mainline;
-{
- struct coff_symfile_info *info = (struct coff_symfile_info *)sf->sym_private;
- bfd *abfd = sf->sym_bfd;
- char *name = bfd_get_filename (abfd);
- int desc;
- register int val;
- int num_symbols;
- int symtab_offset;
- int stringtab_offset;
-
-/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
- desc = fileno ((FILE *)(abfd->iostream)); /* Raw file descriptor */
- num_symbols = bfd_get_symcount (abfd); /* How many syms */
-/* symtab_offset = obj_sym_filepos (abfd); * Symbol table file offset */
-/* stringtab_offset = symtab_offset + num_symbols * SYMESZ; * String tab */
-/* End of warning */
-
-#ifdef TDESC
- debug_info = text_hdr.s_relptr;
- if (tdesc_handle)
- {
- dc_terminate (tdesc_handle);
- tdesc_handle = 0;
- }
-#endif
+struct complaint bad_file_number_complaint =
+{"bad file number %d", 0, 0};
-#if 0
- /* Read the line number table, all at once. */
- info->min_lineno_offset = 0;
- info->max_lineno_offset = 0;
- bfd_map_over_sections (abfd, find_linenos, info);
+struct complaint index_complaint =
+{"bad aux index at symbol %s", 0, 0};
- val = init_lineno (desc, info->min_lineno_offset,
- info->max_lineno_offset - info->min_lineno_offset);
- if (val < 0)
- error ("\"%s\": error reading line numbers\n", name);
+struct complaint aux_index_complaint =
+{"bad proc end in aux found from symbol %s", 0, 0};
- /* Now read the string table, all at once. */
+struct complaint block_index_complaint =
+{"bad aux index at block symbol %s", 0, 0};
- val = init_stringtab (desc, stringtab_offset);
- if (val < 0)
- {
- free_all_symtabs (); /* FIXME blows whole symtab */
- printf ("\"%s\": can't get string table", name);
- fflush (stdout);
- return;
- }
- make_cleanup (free_stringtab, 0);
-#endif
- /* Position to read the symbol table. Do not read it all at once. */
- val = lseek (desc, (long)symtab_offset, 0);
- if (val < 0)
- perror_with_name (name);
+struct complaint unknown_ext_complaint =
+{"unknown external symbol %s", 0, 0};
- init_misc_bunches ();
- make_cleanup (discard_misc_bunches, 0);
+struct complaint unknown_sym_complaint =
+{"unknown local symbol %s", 0, 0};
- /* Now that the executable file is positioned at symbol table,
- process it and define symbols accordingly. */
+struct complaint unknown_st_complaint =
+{"with type %d", 0, 0};
- read_mips_symtab(desc, 0);
+struct complaint block_overflow_complaint =
+{"block containing %s overfilled", 0, 0};
-/* patch_opaque_types ();*/
+struct complaint basic_type_complaint =
+{"cannot map MIPS basic type 0x%x for %s", 0, 0};
- /* Sort symbols alphabetically within each block. */
+struct complaint unknown_type_qual_complaint =
+{"unknown type qualifier 0x%x", 0, 0};
- sort_all_symtab_syms ();
+struct complaint array_bitsize_complaint =
+{"size of array target type not known, assuming %d bits", 0, 0};
- /* Go over the misc symbol bunches and install them in vector. */
+struct complaint bad_tag_guess_complaint =
+{"guessed tag type of %s incorrectly", 0, 0};
- condense_misc_bunches (0);
+struct complaint block_member_complaint =
+{"declaration block contains unhandled symbol type %d", 0, 0};
- /* Make a default for file to list. */
+struct complaint stEnd_complaint =
+{"stEnd with storage class %d not handled", 0, 0};
- select_source_symtab (0); /* FIXME, this might be too slow, see dbxread */
-}
-
-void
-mipscoff_symfile_discard()
-{
-}
-
-/* Exported procedure: Allocate zeroed memory */
+struct complaint unknown_mips_symtype_complaint =
+{"unknown symbol type 0x%x", 0, 0};
-char *xzalloc(size)
-{
- char *p = xmalloc(size);
+struct complaint stab_unknown_complaint =
+{"unknown stabs symbol %s", 0, 0};
- bzero(p, size);
- return p;
-}
+struct complaint pdr_for_nonsymbol_complaint =
+{"PDR for %s, but no symbol", 0, 0};
-/* 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 */
+struct complaint pdr_static_symbol_complaint =
+{"can't handle PDR for static proc at 0x%x", 0, 0};
-/* Forward decls */
-static HDRR *cur_hdr; /* MIPS symtab header for the current file */
+struct complaint bad_setjmp_pdr_complaint =
+{"fixing bad setjmp PDR from libc", 0, 0};
-void
-mipscoff_psymtab_to_symtab(pst)
- struct partial_symtab *pst;
-{
- struct symtab *ret;
- int i;
+struct complaint bad_fbitfield_complaint =
+{"can't handle TIR fBitfield for %s", 0, 0};
- if (!pst)
- return;
+struct complaint bad_rfd_entry_complaint =
+{"bad rfd entry for %s: file %d, index %d", 0, 0};
- if (info_verbose) {
- printf_filtered("Reading in symbols for %s...", pst->filename);
- fflush(stdout);
- }
- /* Restore the header and list of pending typedefs */
- cur_hdr = (HDRR *) pst->ldsymlen;
+struct complaint unexpected_type_code_complaint =
+{"unexpected type code for %s", 0, 0};
- psymtab_to_symtab_1(pst);
+struct complaint unable_to_cross_ref_complaint =
+{"unable to cross ref btTypedef for %s", 0, 0};
- reorder_symtabs();
+struct complaint illegal_forward_tq0_complaint =
+{"illegal tq0 in forward typedef for %s", 0, 0};
- /* Finish up the debug error message. */
- if (info_verbose)
- printf_filtered("done.\n");
-}
+struct complaint illegal_forward_bt_complaint =
+{"illegal bt %d in forward typedef for %s", 0, 0};
-/* Exported procedure: Is PC in the signal trampoline code */
+/* Macros and extra defs */
-int in_sigtramp(pc,name)
- CORE_ADDR pc;
-{
- if (sigtramp_address == 0)
- fixup_sigtramp();
- return (pc >= sigtramp_address && pc < sigtramp_end);
-}
+/* 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 */
-/* All allocated symtabs and psymtabs */
-
-static int all_symtabs_count;
-static int all_psymtabs_count;
+/* Remember what we deduced to be the source language of this psymtab. */
-/* GDB symtable for the current compilation unit */
+static enum language psymtab_language = language_unknown;
-static struct symtab *cur_stab;
+/* Current BFD. */
-/* Header for executable/object file we read symbols from */
-
-static struct coff_exec filhdr;
-#define END_OF_TEXT_SEGMENT(f) ((f).a.text_start + (f).a.tsize)
+static bfd *cur_bfd;
/* Pointer to current file decriptor record, and its index */
-static FDR *cur_fdr;
-static int cur_fd;
+static FDR *cur_fdr;
+static int cur_fd;
/* Index of current symbol */
-static int cur_sdx;
+static int cur_sdx;
/* Note how much "debuggable" this image is. We would like
to see at least one FDR with full 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_float_dec;
struct type *builtin_type_string;
-/* Template types */
+/* Forward declarations */
-static struct type *builtin_type_ptr;
-static struct type *builtin_type_struct;
-static struct type *builtin_type_union;
-static struct type *builtin_type_enum;
-static struct type *builtin_type_range;
-static struct type *builtin_type_set;
+static void
+read_mips_symtab PARAMS ((struct objfile *, struct section_offsets *));
+static void
+read_the_mips_symtab PARAMS ((bfd *));
-/* Forward decls */
+static int
+upgrade_type PARAMS ((int, struct type **, int, union aux_ext *, int));
-static struct symbol *new_symbol();
-static struct type *new_type();
-static struct field *new_field();
-static struct block *new_block();
-static struct symtab *new_symtab();
-static struct linetable *new_linetable();
-static struct blockvector *new_bvect();
+static void
+parse_partial_symbols PARAMS ((struct objfile *,
+ struct section_offsets *));
-static struct type *parse_type();
-static struct type *make_type();
-static struct symbol *mylookup_symbol();
-static struct block *shrink_block();
+static int
+cross_ref PARAMS ((int, union aux_ext *, struct type **, enum type_code,
+ char **, int, char *));
-static int compare_symtabs();
-static int compare_psymtabs();
-static int compare_blocks();
+static void
+fixup_sigtramp PARAMS ((void));
-static struct partial_symtab *new_psymtab();
-static struct partial_symbol *new_psymbol();
-static struct partial_symtab *parse_fdr();
-static int compare_psymbols();
-\f
-/* File-level interface functions */
+static struct symbol *
+new_symbol PARAMS ((char *));
-/* Read the symtab information from file FSYM into memory */
+static struct type *
+new_type PARAMS ((char *));
-static
-read_the_mips_symtab(fsym)
-{
- int stsize, st_hdrsize;
- unsigned st_filptr;
- HDRR st_hdr;
+static struct block *
+new_block PARAMS ((int));
- /* Find and read the symbol table header */
- st_hdrsize = filhdr.f.f_nsyms;
- st_filptr = filhdr.f.f_symptr;
- if (st_filptr == 0)
- return 0;
+static struct symtab *
+new_symtab PARAMS ((char *, int, int, struct objfile *));
- lseek(fsym, st_filptr, L_SET);
- if (read(fsym, &st_hdr, st_hdrsize) != st_hdrsize)
- goto readerr;
+static struct linetable *
+new_linetable PARAMS ((int));
- /* Find out how large the symbol table is */
- stsize = (st_hdr.cbExtOffset - (st_filptr + st_hdrsize))
- + st_hdr.iextMax * cbEXTR;
+static struct blockvector *
+new_bvect PARAMS ((int));
- /* Allocate space for the symbol table. Read it in. */
- cur_hdr = (HDRR *) xmalloc(stsize + st_hdrsize);
+static int
+parse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int));
- bcopy(&st_hdr, cur_hdr, st_hdrsize);
- if (read(fsym, (char *) cur_hdr + st_hdrsize, stsize) != stsize)
- goto readerr;
+static struct type *
+parse_type PARAMS ((int, union aux_ext *, int *, int, char *));
- /* Fixup file_pointers in it */
- fixup_symtab(cur_hdr, (char *) cur_hdr + st_hdrsize,
- st_filptr + st_hdrsize);
+static struct symbol *
+mylookup_symbol PARAMS ((char *, struct block *, enum namespace,
+ enum address_class));
- return;
-readerr:
- error("Short read on %s", symfile);
-}
+static struct block *
+shrink_block PARAMS ((struct block *, struct symtab *));
+static PTR
+xzalloc PARAMS ((unsigned int));
-/* Turn all file-relative pointers in the symtab described by HDR
- into memory pointers, given that the symtab itself is located
- at DATA in memory and F_PTR in the file. */
+static void
+sort_blocks PARAMS ((struct symtab *));
-static
-fixup_symtab( hdr, data, f_ptr)
- HDRR *hdr;
- char *data;
-{
- int f_idx, s_idx;
- FDR *fh;
- SYMR *sh;
- OPTR *op;
- PDR *pr;
- EXTR *esh;
-
- /*
- * These fields are useless (and empty) by now:
- * hdr->cbDnOffset, hdr->cbOptOffset
- * We use them for other internal purposes.
- */
- hdr->cbDnOffset = 0;
- hdr->cbOptOffset = 0;
-
-#define FIX(off) \
- if (hdr->off) hdr->off = (unsigned int)data + (hdr->off - f_ptr);
-
- FIX(cbLineOffset);
- FIX(cbPdOffset);
- FIX(cbSymOffset);
- FIX(cbOptOffset);
- FIX(cbAuxOffset);
- FIX(cbSsOffset);
- FIX(cbSsExtOffset);
- FIX(cbFdOffset);
- FIX(cbRfdOffset);
- FIX(cbExtOffset);
-#undef FIX
-
-
- /*
- * Fix all string pointers inside the symtab, and
- * the FDR records. Also fix other miscellany.
- */
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) {
- register unsigned code_offset;
-
- /* Header itself, and strings */
- fh = (FDR *) (hdr->cbFdOffset) + f_idx;
- fh->issBase += hdr->cbSsOffset;
- if (fh->rss != -1)
- fh->rss = (long)fh->rss + fh->issBase;
- for (s_idx = 0; s_idx < fh->csym; s_idx++) {
- sh = (SYMR*)(hdr->cbSymOffset) + fh->isymBase + s_idx;
- sh->iss = (long) sh->iss + fh->issBase;
- sh->reserved = 0;
- }
+static int
+compare_blocks PARAMS ((const void *, const void *));
- cur_fd = f_idx;
-
- /* Local symbols */
- fh->isymBase = (int)((SYMR*)(hdr->cbSymOffset)+fh->isymBase);
-
- /* cannot fix fh->ipdFirst because it is a short */
-#define IPDFIRST(h,fh) \
- ((long)h->cbPdOffset + fh->ipdFirst * sizeof(PDR))
-
- /* Optional symbols (actually used for partial_symtabs) */
- fh->ioptBase = 0;
- fh->copt = 0;
-
- /* Aux symbols */
- if (fh->caux)
- fh->iauxBase = hdr->cbAuxOffset + fh->iauxBase * sizeof(AUXU);
- /* Relative file descriptor table */
- fh->rfdBase = hdr->cbRfdOffset + fh->rfdBase * sizeof(RFDT);
-
- /* Line numbers */
- if (fh->cbLine)
- fh->cbLineOffset += hdr->cbLineOffset;
-
- /* Procedure symbols. (XXX This should be done later) */
- code_offset = fh->adr;
- for (s_idx = 0; s_idx < fh->cpd; s_idx++) {
- unsigned name, only_ext;
-
- pr = (PDR*)(IPDFIRST(hdr,fh)) + s_idx;
-
- /* Simple rule to find files linked "-x" */
- only_ext = fh->rss == -1;
- if (only_ext) {
- if (pr->isym == -1) {
- /* static function */
- sh = (SYMR*)-1;
- } else {
- /* external */
- name = hdr->cbExtOffset + pr->isym * sizeof(EXTR);
- sh = &((EXTR*)name)->asym;
- }
- } else {
- /* Full symbols */
- sh = (SYMR*)fh->isymBase + pr->isym;
- /* Included code ? */
- if (s_idx == 0 && pr->adr != 0)
- code_offset -= pr->adr;
- }
+static struct partial_symtab *
+new_psymtab PARAMS ((char *, struct objfile *));
- /* Turn index into a pointer */
- pr->isym = (long)sh;
+static void
+psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *));
- /* Fix line numbers */
- pr->cbLineOffset += fh->cbLineOffset;
+static void
+add_block PARAMS ((struct block *, struct symtab *));
- /* Relocate address */
- if (!only_ext)
- pr->adr += code_offset;
- }
- }
+static void
+add_symbol PARAMS ((struct symbol *, struct block *));
- /* External symbols: fix string */
- for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) {
- esh = (EXTR*)(hdr->cbExtOffset) + s_idx;
- esh->asym.iss = esh->asym.iss + hdr->cbSsExtOffset;
- }
-}
+static int
+add_line PARAMS ((struct linetable *, int, CORE_ADDR, int));
+static struct linetable *
+shrink_linetable PARAMS ((struct linetable *));
-/* Find a file descriptor given its index RF relative to a file CF */
+static char *
+mips_next_symbol_text PARAMS ((void));
+\f
+/* Things we export to other modules */
+
+/* Address bounds for the signal trampoline in inferior, if any */
+/* FIXME: Nothing really seems to use this. Why is it here? */
-static
-FDR *get_rfd( cf, rf)
+CORE_ADDR sigtramp_address, sigtramp_end;
+
+static void
+mipscoff_new_init (ignore)
+ struct objfile *ignore;
{
- register FDR *f;
-
- f = (FDR *) (cur_hdr->cbFdOffset) + cf;
- /* Object files do not have the RFD table, all refs are absolute */
- if (f->rfdBase == 0)
- return (FDR *) (cur_hdr->cbFdOffset) + rf;
- cf = *((pRFDT) f->rfdBase + rf);
- return (FDR *) (cur_hdr->cbFdOffset) + cf;
+ sigtramp_address = 0;
+ stabsread_new_init ();
+ buildsym_new_init ();
}
-/* Return a safer print NAME for a file descriptor */
-
-static
-char *fdr_name(name)
- char *name;
+static void
+mipscoff_symfile_init (objfile)
+ struct objfile *objfile;
{
- if (name == (char *) -1)
- return "<stripped file>";
- if (UNSAFE_DATA_ADDR(name))
- return "<NFY>";
- return name;
+ 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);
-/* Read in and parse the symtab of the file DESC. INCREMENTAL says
- whether we are adding to the general symtab or not */
+ /* 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);
+}
-static
-read_mips_symtab( desc, incremental)
+/* Perform any local cleanups required when we are done with a particular
+ objfile. I.E, we are in the process of discarding all symbol information
+ for an objfile, freeing up all memory held for it, and unlinking the
+ objfile struct from the global list of known objfiles. */
+
+static void
+mipscoff_symfile_finish (objfile)
+ struct objfile *objfile;
{
- /*
- * We get here with DESC pointing to the symtab header. But we need
- * other info from the initial headers
- */
- lseek(desc, 0L, 0);
- myread(desc, &filhdr, sizeof filhdr);
-
- read_the_mips_symtab(desc);
-
- parse_partial_symbols(cur_hdr, incremental);
- cur_hdr = 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.", symfile);
- printf("\nYou should compile with -g2 or -g3 for best debugging support.\n");
- fflush(stdout);
- }
+ if (objfile->sym_private != NULL)
+ {
+ mfree (objfile->md, objfile->sym_private);
+ }
- /*
- * Dont allow char * to have a typename (else would get
- * caddr_t.)
- */
- TYPE_NAME(lookup_pointer_type(builtin_type_char)) = 0;
+ cur_bfd = 0;
}
-\f
-/* Local utilities */
+/* Allocate zeroed memory */
+static PTR
+xzalloc (size)
+ unsigned int size;
+{
+ PTR p = xmalloc (size);
-/* Map of FDR indexes to partial symtabs */
+ memset (p, 0, size);
+ return p;
+}
-static struct pst_map {
- struct partial_symtab *pst; /* the psymtab proper */
- int n_globals; /* globals it exports */
-} * fdr_to_pst;
+/* Exported procedure: Builds a symtab from the PST partial one.
+ Restores the environment in effect when PST was created, delegates
+ most of the work to an ancillary procedure, and sorts
+ and reorders the symtab list at the end */
+static void
+mipscoff_psymtab_to_symtab (pst)
+ struct partial_symtab *pst;
+{
-/* 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. */
+ if (!pst)
+ return;
-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 procadr; /* Start addres of this procedure */
- int numargs; /* Its argument count */
-} *top_stack; /* Top stack ptr */
+ if (info_verbose)
+ {
+ printf_filtered ("Reading in symbols for %s...", pst->filename);
+ fflush (stdout);
+ }
+ next_symbol_text_func = mips_next_symbol_text;
-/* Enter a new lexical context */
+ psymtab_to_symtab_1 (pst, pst->filename);
-static push_parse_stack()
-{
- struct parse_stack *new;
+ /* 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);
- /* Reuse frames if possible */
- if (top_stack && top_stack->prev)
- new = top_stack->prev;
- else
- new = (struct parse_stack *) xzalloc(sizeof(struct parse_stack));
- /* Initialize new frame with previous content */
- if (top_stack) {
- register struct parse_stack *prev = new->prev;
-
- *new = *top_stack;
- top_stack->prev = new;
- new->prev = prev;
- new->next = top_stack;
- }
- top_stack = new;
+ if (info_verbose)
+ printf_filtered ("done.\n");
}
-/* Exit a lexical context */
+/* Exported procedure: Is PC in the signal trampoline code */
-static pop_parse_stack()
+int
+in_sigtramp (pc, ignore)
+ CORE_ADDR pc;
+ char *ignore; /* function name */
{
- if (!top_stack)
- return;
- if (top_stack->next)
- top_stack = top_stack->next;
+ if (sigtramp_address == 0)
+ fixup_sigtramp ();
+ return (pc >= sigtramp_address && pc < sigtramp_end);
}
+\f
+/* File-level interface functions */
+/* Read the symtab information from file ABFD into memory. */
-/* Cross-references might be to things we haven't looked at
- yet, e.g. type references. To avoid too many type
- duplications we keep a quick fixup table, an array
- of lists of references indexed by file descriptor */
+static void
+read_the_mips_symtab (abfd)
+ bfd *abfd;
+{
+ if (ecoff_slurp_symbolic_info (abfd) == false)
+ error ("Error reading symbol table: %s", bfd_errmsg (bfd_error));
+}
-static struct pending {
- struct pending *next; /* link */
- SYMR *s; /* the symbol */
- struct type *t; /* its partial type descriptor */
-} **pending_list;
+/* 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;
+}
-/* Check whether we already saw symbol SH in file FH as undefined */
+/* Return a safer print NAME for a file descriptor */
-static
-struct pending *is_pending_symbol(fh, sh)
- FDR *fh;
- SYMR *sh;
+static char *
+fdr_name (f)
+ FDR *f;
{
- int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
- register struct pending *p;
-
- /* Linear search is ok, list is typically no more than 10 deep */
- for (p = pending_list[f_idx]; p; p = p->next)
- if (p->s == sh)
- break;
- return p;
+ if (f->rss == -1)
+ return "<stripped file>";
+ if (f->rss == 0)
+ return "<NFY>";
+ return ecoff_data (cur_bfd)->ss + f->issBase + f->rss;
}
-/* Check whether we already saw type T in file FH as undefined */
-static
-struct pending *is_pending_type(fh, t)
- FDR *fh;
- struct type *t;
+/* Read in and parse the symtab of the file OBJFILE. Symbols from
+ different sections are relocated via the SECTION_OFFSETS. */
+
+static void
+read_mips_symtab (objfile, section_offsets)
+ struct objfile *objfile;
+ struct section_offsets *section_offsets;
{
- int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
- register struct pending *p;
+ cur_bfd = objfile->obfd;
- for (p = pending_list[f_idx]; p; p = p->next)
- if (p->t == t)
- break;
- return p;
-}
+ read_the_mips_symtab (objfile->obfd);
-/* Add a new undef symbol SH of type T */
+ parse_partial_symbols (objfile, section_offsets);
-static
-add_pending(fh, sh, t)
- FDR *fh;
- SYMR *sh;
- struct type *t;
-{
- int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
- struct pending *p = is_pending_symbol(fh, sh);
-
- /* Make sure we do not make duplicates */
- if (!p) {
- p = (struct pending *) xmalloc(sizeof(*p));
- p->s = sh;
- p->t = t;
- p->next = pending_list[f_idx];
- pending_list[f_idx] = p;
- }
- sh->reserved = 1; /* for quick check */
+#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 */
-/* Throw away undef entries when done with file index F_IDX */
+/* Map of FDR indexes to partial symtabs */
-static
-free_pending(f_idx)
+struct pst_map
{
- register struct pending *p, *q;
+ struct partial_symtab *pst; /* the psymtab proper */
+ long n_globals; /* exported globals (external symbols) */
+ long globals_offset; /* cumulative */
+};
- for (p = pending_list[f_idx]; p; p = q) {
- q = p->next;
- free(p);
- }
- pending_list[f_idx] = 0;
+
+/* 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. */
+ CORE_ADDR procadr; /* Start addres of this procedure */
+ int numargs; /* Its argument count */
}
-/* The number of args to a procedure is not explicit in the symtab,
- this is the list of all those we know of.
- This makes parsing more reasonable and avoids extra passes */
+ *top_stack; /* Top stack ptr */
-static struct numarg {
- struct numarg *next; /* link */
- unsigned adr; /* procedure's start address */
- unsigned num; /* arg count */
-} *numargs_list;
-/* Record that the procedure at ADR takes NUM arguments. */
+/* Enter a new lexical context */
-static
-got_numargs(adr,num)
+static void
+push_parse_stack ()
{
- struct numarg *n = (struct numarg *) xmalloc(sizeof(struct numarg));
+ struct parse_stack *new;
+
+ /* Reuse frames if possible */
+ if (top_stack && top_stack->prev)
+ new = top_stack->prev;
+ else
+ new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));
+ /* Initialize new frame with previous content */
+ if (top_stack)
+ {
+ register struct parse_stack *prev = new->prev;
- n->adr = adr;
- n->num = num;
- n->next = numargs_list;
- numargs_list = n;
+ *new = *top_stack;
+ top_stack->prev = new;
+ new->prev = prev;
+ new->next = top_stack;
+ }
+ top_stack = new;
}
-/* See if we know how many arguments the procedure at ADR takes */
+/* Exit a lexical context */
-static
-lookup_numargs(adr)
+static void
+pop_parse_stack ()
{
- struct numarg *n = numargs_list;
-
- while (n && n->adr != adr)
- n = n->next;
- return (n) ? n->num : -1;
+ if (!top_stack)
+ return;
+ if (top_stack->next)
+ top_stack = top_stack->next;
}
-/* Release storage when done with this file */
-static
-free_numargs()
+/* 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 numarg *n = numargs_list, *m;
+ struct mips_pending *next; /* link */
+ char *s; /* the unswapped symbol */
+ struct type *t; /* its partial type descriptor */
+};
- while (n) {
- m = n->next;
- free(n);
- n = m;
- }
- numargs_list = 0;
+
+/* Check whether we already saw symbol SH in file FH */
+
+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;
}
+/* Add a new symbol SH of type T */
+
+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);
+
+ /* Make sure we do not make duplicates */
+ if (!p)
+ {
+ struct mips_pending **pending_list = ECOFF_PENDING_LIST (current_objfile);
+
+ 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;
+ }
+}
\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 */
+ 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). */
-static
-parse_symbol(sh, ax)
- SYMR *sh;
- AUXU *ax;
+static int
+parse_symbol (sh, ax, ext_sh, bigend)
+ SYMR *sh;
+ union aux_ext *ax;
+ char *ext_sh;
+ int bigend;
{
- struct symbol *s;
- struct block *b;
- struct type *t;
- struct field *f;
- /* When a symbol is cross-referenced from other files/symbols
- we mark it explicitly */
- int pend = (sh->reserved == 1);
- enum address_class class;
-
- switch (sh->st) {
-
- case stNil:
- break;
+ 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;
+ long svalue = sh->value;
+
+ 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;
- case stGlobal: /* external symbol, goes into the primary block */
- class = LOC_STATIC;
- b = BLOCKVECTOR_BLOCK(BLOCKVECTOR(top_stack->cur_st),
- GLOBAL_BLOCK);
- goto data;
-
- case stStatic: /* static data, goes into the current block. */
- class = LOC_STATIC;
- b = top_stack->cur_block;
- goto data;
-
- case stLocal: /* local variable, goes into the current block */
- if (sh->sc == scRegister) {
- class = LOC_REGISTER;
- if (sh->value > 31)
- sh->value += 6;
- } else
- class = LOC_LOCAL;
- b = top_stack->cur_block;
-
-data: /* Common code for symbols describing data */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = class;
- add_symbol(s, b);
-
- /* Type could be missing in a number of cases */
- if (sh->sc == scUndefined || sh->sc == scNil ||
- sh->index == 0xfffff)
- SYMBOL_TYPE(s) = builtin_type_int; /* undefined? */
- else
- SYMBOL_TYPE(s) = parse_type(ax + sh->index, sh, 0);
- /* Value of a data symbol is its memory address */
- SYMBOL_VALUE(s) = sh->value;
- break;
+ switch (sh->st)
+ {
+ case stNil:
+ break;
+
+ case stGlobal: /* external symbol, goes into global block */
+ class = LOC_STATIC;
+ b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
+ GLOBAL_BLOCK);
+ s = new_symbol (name);
+ SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
+ goto data;
+
+ case stStatic: /* static data, goes into current block. */
+ class = LOC_STATIC;
+ b = top_stack->cur_block;
+ s = new_symbol (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;
- case stParam: /* argument to procedure, goes into current block */
- max_gdbinfo++;
- top_stack->numargs++;
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- if (sh->sc == scRegister) {
- SYMBOL_CLASS(s) = LOC_REGPARM;
- if (sh->value > 31)
- sh->value += 6;
- } else
- SYMBOL_CLASS(s) = LOC_ARG;
- SYMBOL_VALUE(s) = sh->value;
- SYMBOL_TYPE(s) = parse_type(ax + sh->index, sh, 0);
- add_symbol(s, top_stack->cur_block);
- break;
+ case stLocal: /* local variable, goes into current block */
+ if (sh->sc == scRegister)
+ {
+ class = LOC_REGISTER;
+ svalue = ECOFF_REG_TO_REGNUM (svalue);
+ }
+ else
+ class = LOC_LOCAL;
+ b = top_stack->cur_block;
+ s = new_symbol (name);
+ SYMBOL_VALUE (s) = svalue;
+
+ data: /* Common code for symbols describing data */
+ SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
+ SYMBOL_CLASS (s) = class;
+ add_symbol (s, b);
+
+ /* Type could be missing in a number of cases */
+ if (sh->sc == scUndefined || sh->sc == scNil ||
+ sh->index == 0xfffff)
+ SYMBOL_TYPE (s) = builtin_type_int; /* undefined? */
+ else
+ SYMBOL_TYPE (s) = parse_type (cur_fd, ax + sh->index, 0, bigend, name);
+ /* Value of a data symbol is its memory address */
+ break;
+
+ case stParam: /* arg to procedure, goes into current block */
+ max_gdbinfo++;
+ top_stack->numargs++;
+
+ /* Special GNU C++ name. */
+ if (name[0] == CPLUS_MARKER && name[1] == 't' && name[2] == 0)
+ name = "this"; /* FIXME, not alloc'd in obstack */
+ s = new_symbol (name);
+
+ SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
+ switch (sh->sc)
+ {
+ case scRegister:
+ /* Pass by value in register. */
+ SYMBOL_CLASS(s) = LOC_REGPARM;
+ svalue = ECOFF_REG_TO_REGNUM (svalue);
+ 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;
+ svalue = ECOFF_REG_TO_REGNUM (svalue);
+ break;
+ default:
+ /* Pass by value on stack. */
+ SYMBOL_CLASS(s) = LOC_ARG;
+ break;
+ }
+ SYMBOL_VALUE (s) = svalue;
+ SYMBOL_TYPE (s) = parse_type (cur_fd, 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 (cur_fd, 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);
- case stLabel: /* label, we do make a symbol for it */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; /* so that it can be used */
- SYMBOL_CLASS(s) = LOC_LABEL; /* but not misused */
- SYMBOL_VALUE(s) = sh->value;
- SYMBOL_TYPE(s) = builtin_type_int;
- add_symbol(s, top_stack->cur_block);
- break;
+ /* 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
- case stProc: /* Procedure */
- case stStaticProc: /* Static procedure */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_BLOCK;
- /* Type of the return value */
- if (sh->sc == scUndefined || sh->sc == scNil)
- t = builtin_type_int;
- else
- t = parse_type(ax + sh->index, sh, 0);
- add_symbol(s, top_stack->cur_block);
-
- /* Make a type for the procedure itself */
- SYMBOL_TYPE(s) = lookup_function_type (t);
-
- /* 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->procadr = sh->value;
- top_stack->numargs = 0;
-
- sh->value = (long) SYMBOL_TYPE(s);
- break;
+ /* 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;
+ 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 stBlock: /* Either a lexical block, or some type */
- push_parse_stack();
- top_stack->blocktype = stBlock;
- if (sh->sc == scInfo) { /* structure/union/enum def */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = STRUCT_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_TYPEDEF;
- SYMBOL_VALUE(s) = 0;
- add_symbol(s, top_stack->cur_block);
- /* If this type was expected, use its partial definition */
- if (pend) {
- t = is_pending_symbol(cur_fdr, sh)->t;
- } else {
- /* Uhmm, can`t decide yet. Smash later */
- t = new_type(sh->iss);
- TYPE_CODE(t) = TYPE_CODE_UNDEF;
- add_pending(cur_fdr, sh, t);
- }
- SYMBOL_TYPE(s) = t;
- /* make this the current type */
- top_stack->cur_type = t;
- TYPE_LENGTH(t) = sh->value;
- /* Mark that symbol has a type, and say which one */
- sh->value = (long) t;
- } else {
- /* beginnning of (code) block. Value of symbol
- is the displacement from procedure start */
- 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);
- }
+ 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;
+
+ /* 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 stEnd: /* end (of anything) */
- if (sh->sc == scInfo) {
- /* Finished with type */
- top_stack->cur_type = 0;
- } else if (sh->sc == scText &&
- (top_stack->blocktype == stProc ||
- top_stack->blocktype == stStaticProc)) {
- /* Finished with procedure */
- struct blockvector *bv = BLOCKVECTOR(top_stack->cur_st);
- struct block *b;
- int i;
-
- BLOCK_END(top_stack->cur_block) += sh->value; /* size */
- got_numargs(top_stack->procadr, top_stack->numargs);
- /* 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);
- }
- }
- if (entry_point < BLOCK_END(b)
- && entry_point >= BLOCK_START(b)) {
- startup_file_start = BLOCK_START(b);
- startup_file_end = BLOCK_END(b);
+ case stBlock:
+ case stUnion:
+ case stEnum:
+ case stStruct:
+ {
+#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));
}
- } 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;
- (void) shrink_block(top_stack->cur_block, top_stack->cur_st);
}
- pop_parse_stack(); /* restore previous lexical context */
break;
- case stMember: /* member of struct/union/enum.. */
- f = new_field(top_stack->cur_type, sh->iss);
- f->bitpos = sh->value;
- f->type = parse_type(ax + sh->index, sh, &f->bitsize);
+ 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;
- case stTypedef: /* type definition */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_TYPEDEF;
- SYMBOL_BLOCK_VALUE(s) = top_stack->cur_block;
- add_symbol(s, top_stack->cur_block);
- SYMBOL_TYPE(s) = parse_type(ax + sh->index, sh, 0);
- sh->value = (long) SYMBOL_TYPE(s);
- break;
-
- case stFile: /* file name */
- push_parse_stack();
- top_stack->blocktype = sh->st;
- 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.) */
+
+ if (type_code == TYPE_CODE_UNDEF)
+ if (nfields > 1 && max_value == 0)
+ type_code = TYPE_CODE_UNION;
+ else
+ type_code = TYPE_CODE_STRUCT;
+
+ /* Create a new type or use the pending type. */
+ pend = is_pending_symbol (cur_fdr, ext_sh);
+ if (pend == (struct mips_pending *) NULL)
+ {
+ t = new_type (NULL);
+ add_pending (cur_fdr, ext_sh, t);
+ }
+ else
+ t = pend->t;
- /* I`ve never seen these for C */
- case stRegReloc:
- break; /* register relocation */
- case stForward:
- break; /* forwarding address */
- case stConstant:
- break; /* constant */
- default:
- error("Unknown symbol type %x.", sh->st);
+ /* Alpha cc unnamed structs do not get a tag name. */
+ if (sh->iss == 0)
+ TYPE_TAG_NAME (t) = NULL;
+ else
+ 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)));
+
+ 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;
+
+ (*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++;
+ }
+ }
+ /* make this the current type */
+ top_stack->cur_type = t;
+ top_stack->cur_field = 0;
+
+ /* Do not create a symbol for alpha cc unnamed structs. */
+ if (sh->iss == 0)
+ break;
+ s = new_symbol (name);
+ SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
+ SYMBOL_CLASS (s) = LOC_TYPEDEF;
+ SYMBOL_VALUE (s) = 0;
+ SYMBOL_TYPE (s) = t;
+
+ /* gcc puts out an empty struct for an opaque struct definitions. */
+ if (TYPE_NFIELDS (t) == 0)
+ {
+ TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
+ SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
+ }
+ add_symbol (s, top_stack->cur_block);
+ 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;
}
- sh->st = stParsed;
-}
+ 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) = (long) 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 (cur_fd, ax + sh->index, &f->bitsize, bigend, name);
+ break;
+
+ case stTypedef: /* type definition */
+ /* Typedefs for forward declarations and opaque structs from alpha cc
+ are handled by cross_ref, skip them. */
+ if (sh->iss == 0)
+ break;
+
+ /* Parse the type or use the pending type. */
+ pend = is_pending_symbol (cur_fdr, ext_sh);
+ if (pend == (struct mips_pending *) NULL)
+ {
+ t = parse_type (cur_fd, ax + sh->index, (int *)NULL, bigend, name);
+ add_pending (cur_fdr, ext_sh, t);
+ }
+ else
+ t = pend->t;
+
+ /* mips cc puts out a typedef with the name of the struct for forward
+ declarations. These should not go into the symbol table and
+ TYPE_NAME should not be set for them.
+ They can't be distinguished from an intentional typedef to
+ the same name however:
+ x.h:
+ struct x { int ix; int jx; };
+ struct xx;
+ x.c:
+ typedef struct x x;
+ struct xx {int ixx; int jxx; };
+ generates a cross referencing stTypedef for x and xx.
+ The user visible effect of this is that the type of a pointer
+ to struct foo sometimes is given as `foo *' instead of `struct foo *'.
+ The problem is fixed with alpha cc. */
+
+ s = new_symbol (name);
+ SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
+ SYMBOL_CLASS (s) = LOC_TYPEDEF;
+ SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
+ SYMBOL_TYPE (s) = t;
+ add_symbol (s, top_stack->cur_block);
+
+ /* 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;
+ }
-/* Parse the type information provided in the AX entries for
- the symbol SH. Return the bitfield size in BS, in case. */
+ return count;
+}
-static struct type *parse_type(ax, sh, bs)
- AUXU *ax;
- SYMR *sh;
- int *bs;
+/* 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 (fd, ax, bs, bigend, sym_name)
+ int fd;
+ union aux_ext *ax;
+ int *bs;
+ int bigend;
+ char *sym_name;
{
- /* Null entries in this map are treated specially */
- static struct type **map_bt[] =
+ /* 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 */
+ 0, /* DEC C++: Pointer to member */
+ 0, /* DEC C++: Virtual function table */
+ 0, /* DEC C++: Class (Record) */
+ &builtin_type_long, /* btLong64 */
+ &builtin_type_unsigned_long, /* btULong64 */
+ &builtin_type_long_long, /* btLongLong64 */
+ &builtin_type_unsigned_long_long, /* btULongLong64 */
+ &builtin_type_unsigned_long, /* btAdr64 */
+ &builtin_type_long, /* btInt64 */
+ &builtin_type_unsigned_long, /* btUInt64 */
+ };
+
+ 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)
{
- &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 */
- };
-
- TIR *t;
- struct type *tp = 0, *tp1;
- char *fmt = "%s";
-
- /* Procedures start off by one */
- if (sh->st == stProc || sh->st == stStaticProc)
- ax++;
-
- /* Undefined ? Should not happen */
- if (ax->rndx.rfd == 0xfff) {
- return builtin_type_void;
+ 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:
+ /* alpha cc uses this for typedefs. The true type will be
+ obtained by crossreferencing below. */
+ type_code = TYPE_CODE_ERROR;
+ break;
+ default:
+ complain (&basic_type_complaint, t->bt, sym_name);
+ return builtin_type_int;
}
+ }
- /* Use aux as a type information record, map its basic type */
- t = &ax->ti;
- if (t->bt > 26 || t->bt == btPicture) {
- printf_filtered("Internal: cannot map MIPS basic type x%x\n", t->bt);
- return builtin_type_int;
- }
- if (map_bt[t->bt])
- tp = *map_bt[t->bt];
- else {
- /* Cannot use builtin types, use templates */
- tp = make_type(TYPE_CODE_VOID, 0, 0, 0);
- switch (t->bt) {
- case btAdr:
- *tp = *builtin_type_ptr;
- break;
- case btStruct:
- *tp = *builtin_type_struct;
- fmt = "struct %s";
- break;
- case btUnion:
- *tp = *builtin_type_union;
- fmt = "union %s";
- break;
- case btEnum:
- *tp = *builtin_type_enum;
- fmt = "enum %s";
- break;
- case btRange:
- *tp = *builtin_type_range;
- break;
- case btSet:
- *tp = *builtin_type_set;
- fmt = "set %s";
- break;
- }
+ /* 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++;
- /* Move on to next aux */
- ax++;
- if (t->continued) {
- /* This is the way it would work if the compiler worked */
- register TIR *t1 = t;
- while (t1->continued)
- 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 ||
- /* For bitfields all we need is the width */
- if (t->fBitfield) {
- *bs = ax->width;
- return tp;
+ /* 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, build new type on failure. */
+ ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
+ if (tp == (struct type *) NULL)
+ tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
+
+ /* 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
+ {
- /* All these types really point to some (common) MIPS type
- definition, and only the type-qualifiers fully identify
- them. We`ll make the same effort at sharing */
- if (t->bt == btIndirect ||
- t->bt == btStruct ||
- t->bt == btUnion ||
- t->bt == btEnum ||
- t->bt == btTypedef ||
- t->bt == btRange ||
- t->bt == btSet) {
- char name[256], *pn;
-
- /* Try to cross reference this type */
- tp1 = tp;
- ax += cross_ref(ax, &tp1, &pn);
- /* SOMEONE OUGHT TO FIX DBXREAD TO DROP "STRUCT" */
- sprintf(name, fmt, pn);
-
- /* reading .o file ? */
- if (UNSAFE_DATA_ADDR(tp1))
- tp1 = tp;
- if (TYPE_CODE(tp1) == TYPE_CODE_UNDEF) {
- /*
- * Type was incompletely defined, now we know.
- */
- TYPE_CODE(tp1) = TYPE_CODE(tp);
- TYPE_NAME(tp1) = obsavestring(name, strlen(name));
- if (TYPE_CODE(tp1) == TYPE_CODE_ENUM) {
- int i;
-
- for (i = 0; i < TYPE_NFIELDS(tp1); i++)
- make_enum_constant(&TYPE_FIELD(tp1,i), tp1);
- }
- }
- if (tp1 != tp) {
- /* found as cross ref, rid of our template */
- if ((TYPE_FLAGS(tp) & TYPE_FLAG_PERM) == 0)
- free(tp);
- tp = tp1;
- /* stupid idea of prepending "struct" to type names */
- if (t->bt == btStruct && !index(TYPE_NAME(tp), ' ')) {
- sprintf(name, fmt, TYPE_NAME(tp));
- TYPE_NAME(tp) = obsavestring(name, strlen(name));
- }
- } else
- TYPE_NAME(tp) = savestring(name, strlen(name));
+ /* Usually, TYPE_CODE(tp) is already type_code. The main
+ exception is if we guessed wrong re struct/union/enum.
+ But for struct vs. union a wrong guess is harmless, so
+ don't complain(). */
+ if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
+ && type_code != TYPE_CODE_ENUM)
+ || (TYPE_CODE (tp) != TYPE_CODE_ENUM
+ && type_code == TYPE_CODE_ENUM))
+ {
+ complain (&bad_tag_guess_complaint, sym_name);
+ }
+
+ if (TYPE_CODE (tp) != type_code)
+ {
+ 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;
- /* Deal with range types */
- if (t->bt == btRange) {
- struct field *f;
+ /* Try to cross reference this type, build new type on failure. */
+ ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
+ if (tp == (struct type *) NULL)
+ tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
- f = new_field(tp, "Low");
- f->bitpos = ax->dnLow;
- ax++;
- f = new_field(tp, "High");
- f->bitpos = ax->dnHigh;
- ax++;
+ /* 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);
}
+ }
+ if (t->bt == btTypedef)
+ {
+ char *name;
- /* Parse all the type qualifiers now. If there are more
- than 6 the game will continue in the next aux */
+ /* Try to cross reference this type, it should succeed. */
+ ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
+ if (tp == (struct type *) NULL)
+ {
+ complain (&unable_to_cross_ref_complaint, sym_name);
+ tp = builtin_type_int;
+ }
+ }
+
+ /* 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, sh);
-
-again: PARSE_TQ(tq0);
- PARSE_TQ(tq1);
- PARSE_TQ(tq2);
- PARSE_TQ(tq3);
- PARSE_TQ(tq4);
- PARSE_TQ(tq5);
+ if (t->tq != tqNil) ax += upgrade_type(fd, &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) {
- t++;
- goto again;
- }
- return tp;
+ 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.
+ 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
-upgrade_type(tpp, tq, ax, sh)
- struct type **tpp;
- AUXU *ax;
- SYMR *sh;
+static int
+upgrade_type (fd, tpp, tq, ax, bigend)
+ int fd;
+ struct type **tpp;
+ int tq;
+ union aux_ext *ax;
+ int bigend;
{
- int off = 0;
- int ret = 0;
- struct type *t;
-
- if (tq == tqPtr) {
- t = lookup_pointer_type (*tpp);
- } else if (tq == tqProc) {
- t = lookup_function_type (*tpp);
- } else if (tq == tqArray) {
- int rf, id;
- FDR *fh;
- struct field *f;
- SYMR ss;
-
- t = make_type(TYPE_CODE_ARRAY, 0, 0, 0);
- TYPE_TARGET_TYPE(t) = *tpp;
-
- /* Pointer to domain type (type of index) */
- id = ax->rndx.index;
- if ((rf = ax->rndx.rfd) == 0xfff)
- rf = (++ax)->isym, off++;
-
- fh = get_rfd(cur_fd, rf);
- f = new_field(t, 0);
- bzero(&ss, sizeof ss);
-/* XXX */ f->type = parse_type(fh->iauxBase + id * sizeof(AUXU),
- &ss, &f->bitsize);
-
- /*
- * This seems to be a pointer to the end of the Block defining
- * the type. Why it is here is magic for me, and I have no
- * good use for it anyways.
- */
- if (off == 0) {
- off++;
- id = (++ax)->rndx.index;
- if ((rf = ax->rndx.rfd) == 0xfff)
- rf = (++ax)->isym, off++;
- }
- f->bitpos = (++ax)->dnLow; /* ?? */
- f->bitsize = (++ax)->dnHigh; /* ?? */
- rf = (++ax)->width - 1; /* bit alignment */
- id = TYPE_LENGTH(TYPE_TARGET_TYPE(t)) << 3; /* bitsize */
-
- if (id == 0) {
- /* Most likely an undefined type */
- id = rf + 1;
- TYPE_LENGTH(TYPE_TARGET_TYPE(t)) = id >> 3;
- }
- TYPE_LENGTH(t) = (f->bitsize < 0) ? 0 :
- (f->bitsize - f->bitpos + 1) * (id >> 3);
- ret = 4 + off;
- } else {
- if (tq != tqVol)
- printf_filtered("Internal: unknown type qualifier %x\n", tq);
- return ret;
+ 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 (fd, rf);
+
+ indx = parse_type (fd,
+ (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 ret;
-}
+ *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 make up the
- extra information we need into a special symbol that we insert
- in the procedure's main block. Note also that images that
- have been partially stripped (ld -x) have been deprived
- of local symbols, and we have to cope with them here.
- The procedure's code ends at BOUND */
-static
-parse_procedure(pr, bound)
- PDR *pr;
+/* 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;
- SYMR *sh = (SYMR*)pr->isym;
- struct block *b;
- struct mips_extra_func_info *e;
- char name[100];
- char *sh_name;
-
- /* Reuse the MIPS record */
- e = (struct mips_extra_func_info *) pr;
- e->numargs = lookup_numargs(pr->adr);
-
- /* Make up our special symbol */
- i = new_symbol(".gdbinfo.");
- SYMBOL_VALUE(i) = (int)e;
- SYMBOL_NAMESPACE(i) = LABEL_NAMESPACE;
- SYMBOL_CLASS(i) = LOC_CONST;
- SYMBOL_TYPE(i) = builtin_type_void;
-
- /* Make up a name for static procedures. Sigh. */
- if (sh == (SYMR*)-1) {
- sprintf(name,".static_procedure@%x",pr->adr);
- sh_name = savestring(name, strlen(name));
- s = NULL;
+ 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 {
- sh_name = (char*)sh->iss;
- s = mylookup_symbol(sh_name, top_stack->cur_block,
- VAR_NAMESPACE, LOC_BLOCK);
+ 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;
}
- if (s != 0) {
- b = SYMBOL_BLOCK_VALUE(s);
- } else {
- s = new_symbol(sh_name);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_BLOCK;
- /* Donno its type, hope int is ok */
- SYMBOL_TYPE(s) = lookup_function_type (builtin_type_int);
- add_symbol(s, top_stack->cur_block);
- /* Wont have symbols for this one */
- b = new_block(2);
- SYMBOL_BLOCK_VALUE(s) = b;
- BLOCK_FUNCTION(b) = s;
- BLOCK_START(b) = pr->adr;
- BLOCK_END(b) = bound;
- BLOCK_SUPERBLOCK(b) = top_stack->cur_block;
- add_block(b, top_stack->cur_st);
+ }
+ 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;
}
- e->isym = (long)s;
- add_symbol(i,b);
+ }
}
/* 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 */
+ and only if this causes no symbol duplication.
+ BIGEND says whether aux entries are big-endian or little-endian.
-static
-parse_external(es, skip_procedures)
- EXTR *es;
+ 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;
{
- AUXU *ax;
-
- if (es->ifd != ifdNil) {
- cur_fd = es->ifd;
- cur_fdr = (FDR*)(cur_hdr->cbFdOffset) + cur_fd;
- ax = (AUXU*)cur_fdr->iauxBase;
- } else {
- cur_fdr = (FDR*)(cur_hdr->cbFdOffset);
- ax = 0;
+ 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;
}
- top_stack->cur_st = cur_stab;
- top_stack->cur_block = BLOCKVECTOR_BLOCK(BLOCKVECTOR(top_stack->cur_st),
- GLOBAL_BLOCK);
-
- /* 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++;
- if (info_verbose)
- printf_filtered("Warning: %s %s is undefined (in %s)\n", what,
- es->asym.iss, fdr_name(cur_fdr->rss));
- return;
+ 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);
+ 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++)
+ {
+ long 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. */
- switch (es->asym.st) {
+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:
- /* If we have full symbols we do not need more */
- if (skip_procedures)
- return;
- if (mylookup_symbol (es->asym.iss, top_stack->cur_block,
- VAR_NAMESPACE, LOC_BLOCK))
- break;
- /* fall through */
+ break;
+ case stStaticProc:
+ ms_type = mst_file_text;
+ 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:
- /*
- * Note that the case of a symbol with indexNil
- * must be handled anyways by parse_symbol().
- */
- parse_symbol(&es->asym, ax);
- break;
+ 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:
- break;
+ 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;
}
-}
-
-/* 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
-parse_lines(fh, lt)
- FDR *fh;
- struct linetable *lt;
-{
- char *base = (char*)fh->cbLineOffset;
- int i, j, k;
- int delta, count, lineno = 0;
- PDR *pr;
-
- if (base == 0)
- return;
-
- /* Scan by procedure descriptors */
- i = 0; j = 0, k = 0;
- for (pr = (PDR*)IPDFIRST(cur_hdr,fh); j < fh->cpd; j++, pr++) {
- int l, halt;
-
- /* No code for this one */
- if (pr->iline == ilineNil ||
- pr->lnLow == -1 || pr->lnHigh == -1)
- continue;
- /*
- * Aurgh! To know where to stop expanding we
- * must look-ahead.
- */
- for (l = 1; l < (fh->cpd - j); l++)
- if (pr[l].iline != -1)
- break;
- if (l == (fh->cpd - j))
- halt = fh->cline;
- else
- halt = pr[l].iline;
- /*
- * When procedures are moved around the linenumbers
- * are attributed to the next procedure up
- */
- if (pr->iline >= halt) continue;
-
- base = (char*)pr->cbLineOffset;
- l = pr->adr >> 2; /* in words */
- halt += (pr->adr >> 2) - pr->iline;
- for (lineno = pr->lnLow; l < halt;) {
- count = *base & 0x0f;
- delta = *base++ >> 4;
- if (delta == -8) {
- delta = (base[0] << 8) | (base[1] & 0xff);
- base += 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;
}
- lineno += delta;/* first delta is 0 */
- k = add_line(lt, lineno, l, k);
- l += count + 1;
+ }
+ 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;
+ }
-/* Parse the symbols of the file described by FH, whose index is F_IDX.
- BOUND is the highest core address of this file's procedures */
+ /* 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;
+ }
-static
-parse_one_file(fh, f_idx, bound)
- FDR *fh;
-{
- register int s_idx;
- SYMR *sh;
- PDR *pr;
+ 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 */
+ }
- /* Parse local symbols first */
+ 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;
- for (s_idx = 0; s_idx < fh->csym; s_idx++) {
- sh = (SYMR *) (fh->isymBase) + s_idx;
- cur_sdx = s_idx;
- parse_symbol(sh, fh->iauxBase);
- }
+ case stFile: /* File headers */
+ case stLabel: /* Labels */
+ case stEnd: /* Ends of files */
+ goto skip;
- /* Procedures next, note we need to look-ahead to
- find out where the procedure's code ends */
+ 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;
- for (s_idx = 0; s_idx < fh->cpd-1; s_idx++) {
- pr = (PDR *) (IPDFIRST(cur_hdr, fh)) + s_idx;
- parse_procedure(pr, pr[1].adr); /* next proc up */
+ 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:
+ case stStaticProc:
+ 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);
+ }
}
- if (fh->cpd) {
- pr = (PDR *) (IPDFIRST(cur_hdr, fh)) + s_idx;
- parse_procedure(pr, bound); /* next file up */
+
+ /* 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;
}
+ }
- /* Linenumbers. At the end, check if we can save memory */
- parse_lines(fh, LINETABLE(cur_stab));
- if (LINETABLE(cur_stab)->nitems < fh->cline)
- shrink_linetable(cur_stab);
+ /* 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);
}
-/* Master parsing procedure. Parses the symtab described by the
- symbolic header HDR. If INCREMENTAL is true we are called
- by add-file and must preserve the old symtabs */
-static
-parse_partial_symbols(hdr, incremental)
- HDRR *hdr;
+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;
{
- int f_idx, s_idx, h_max;
- CORE_ADDR dummy, *prevhigh;
- /* Running pointers */
- FDR *fh;
- RFDT *rh;
- register EXTR *esh;
-
- /*
- * Big plan:
- *
- * Only parse the 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)
- */
-
- cur_hdr = hdr;
- 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);
- fdr_to_pst++;
+ 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_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))
{
- struct partial_symtab * pst = new_psymtab("");
- fdr_to_pst[-1].pst = pst;
- pst->ldsymoff = -1;
+ /* We indicate that this is a GCC compilation so that certain
+ features will be enabled in stabsread/dbxread. */
+ processing_gcc_compilation = 2;
}
+ }
- /* Now scan the FDRs, mostly for dependencies */
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
- (void) parse_fdr(f_idx, 1);
+ if (processing_gcc_compilation != 0)
+ {
+ char *pdr_ptr;
+ char *pdr_end;
+ int first_pdr;
+ unsigned long first_off = 0;
- /* Take a good guess at how many symbols we might ever need */
- h_max = hdr->iextMax;
+ /* This symbol table contains stabs-in-ecoff entries. */
- /* Parse externals: two passes because they can be ordered
- in any way */
+ /* Parse local symbols first */
- /* Pass 1: Presize and partition the list */
- for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) {
- esh = (EXTR *) (hdr->cbExtOffset) + s_idx;
- fdr_to_pst[esh->ifd].n_globals++;
+ if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
+ {
+ current_objfile = NULL;
+ return;
}
-
- if (global_psymbols.list) {
- global_psymbols.list = (struct partial_symbol *)
- xrealloc( global_psymbols.list, (h_max +
- global_psymbols.size) * sizeof(struct partial_symbol));
- global_psymbols.next = global_psymbols.list + global_psymbols.size;
- global_psymbols.size += h_max;
- } else {
- global_psymbols.list = (struct partial_symbol *)
- xmalloc( h_max * sizeof(struct partial_symbol));
- global_psymbols.size = h_max;
- global_psymbols.next = global_psymbols.list;
+ 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) = (long) 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);
}
-
- s_idx = global_psymbols.next - global_psymbols.list;
- for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) {
- fdr_to_pst[f_idx].pst->globals_offset = s_idx;
- s_idx += fdr_to_pst[f_idx].n_globals;
+ 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. */
- /* Pass 2: fill in symbols */
- for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) {
- register struct partial_symbol *p;
- enum misc_function_type misc_type = mf_text;
- esh = (EXTR *) (hdr->cbExtOffset) + s_idx;
+ /* FIXME: doesn't use pst->section_offsets. */
- if (esh->asym.sc == scUndefined || esh->asym.sc == scNil)
- continue;
- p = new_psymbol(&global_psymbols, esh->asym.iss, esh->ifd);
- SYMBOL_VALUE(p) = esh->asym.value;
- SYMBOL_NAMESPACE(p) = VAR_NAMESPACE;
+ int f_max;
+ int maxlines;
+ EXTR *ext_ptr;
- switch (esh->asym.st) {
- case stProc:
- SYMBOL_CLASS(p) = LOC_BLOCK;
- break;
- case stGlobal:
- SYMBOL_CLASS(p) = LOC_STATIC;
- misc_type = mf_data;
- break;
- case stLabel:
- SYMBOL_CLASS(p) = LOC_LABEL;
- break;
- default:
- misc_type = mf_unknown;
- complain (&unknown_ext_complaint, SYMBOL_NAME(p));
- }
- prim_record_misc_function (SYMBOL_NAME(p),
- SYMBOL_VALUE(p),
- misc_type);
+ /* 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 array (of lists) of globals must be sorted.
- Take care, since we are at it, of pst->texthigh.
-
- NOTE: The way we handle textlow/high is incorrect, but good
- enough for a first approximation. The case we fail is on a
- file "foo.c" that looks like
- proc1() {...}
- #include "bar.c" -- this contains proc2()
- proc3() {...}
- where proc3() is attributed to bar.c. But since this is a
- dependent file it will cause loading of foo.c as well, so
- everything will be fine at the end. */
-
- prevhigh = &dummy;
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) {
- struct partial_symtab *pst = fdr_to_pst[f_idx].pst;
- if (pst->n_global_syms > 1)
- qsort (global_psymbols.list + pst->globals_offset,
- pst->n_global_syms, sizeof (struct partial_symbol),
- compare_psymbols);
- if (pst->textlow) {
- *prevhigh = pst->textlow;
- prevhigh = &pst->texthigh;
- }
+ /* The proper language was already determined when building
+ the psymtab, use it. */
+ st->language = PST_PRIVATE (pst)->pst_language;
}
- /* Mark the last code address, and remember it for later */
- *prevhigh = END_OF_TEXT_SEGMENT(filhdr);
- hdr->cbDnOffset = END_OF_TEXT_SEGMENT(filhdr);
+ psymtab_language = st->language;
- reorder_psymtabs();
- free(&fdr_to_pst[-1]);
- fdr_to_pst = 0;
-}
+ lines = LINETABLE (st);
+ /* Get a new lexical context */
-/* Do the initial analisys of the F_IDX-th file descriptor.
- Allocates a partial symtab for it, and builds the list
- of dependent files by recursion. LEV says at which level
- of recursion we are called (to pretty up debug traces) */
+ 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;
-static struct partial_symtab *
-parse_fdr(f_idx, lev)
- int f_idx;
-{
- register FDR *fh;
- register struct partial_symtab *pst;
- int s_idx, s_id0;
-
- fh = (FDR *) (cur_hdr->cbFdOffset) + f_idx;
-
- /* Use this to indicate into which symtab this file was parsed */
- if (fh->ioptBase)
- return (struct partial_symtab *) fh->ioptBase;
-
- /* Debuggability level */
- if (compare_glevel(max_glevel, fh->glevel) < 0)
- max_glevel = fh->glevel;
-
- /* Make a new partial_symtab */
- pst = new_psymtab(fh->rss);
- if (fh->cpd == 0){
- pst->textlow = 0;
- pst->texthigh = 0;
- } else {
- pst->textlow = fh->adr;
- pst->texthigh = fh->cpd; /* To be fixed later */
- }
- /* Reverse mapping PST -> FDR */
- pst->ldsymoff = f_idx;
-
- fdr_to_pst[f_idx].pst = pst;
- fh->ioptBase = (int)pst;
-
- /* Analyze its dependencies */
- if (fh->crfd <= 1)
- return pst;
-
- s_id0 = 0;
- if (fh->cpd == 0) { /* If there are no functions defined here ... */
- /* ...then presumably a .h file: drop reverse depends .h->.c */
- for (; s_id0 < fh->crfd; s_id0++) {
- RFDT *rh = (RFDT *) (fh->rfdBase) + s_id0;
- if (*rh == f_idx) {
- s_id0++; /* Skip self-dependency */
- break;
- }
- }
+ 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);
+ 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);
+ }
}
- pst->number_of_dependencies = fh->crfd - s_id0;
- pst->dependencies = (struct partial_symtab **)
- obstack_alloc (psymbol_obstack,
- pst->number_of_dependencies * sizeof(char*));
- for (s_idx = s_id0; s_idx < fh->crfd; s_idx++) {
- RFDT *rh = (RFDT *) (fh->rfdBase) + s_idx;
- pst->dependencies[s_idx-s_id0] = parse_fdr(*rh, lev+1);
+ 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 ();
- return pst;
-}
+ /* Sort the symbol table now, we are done adding symbols to it.*/
+ sort_symtab_syms (st);
+ sort_blocks (st);
+ }
-/* 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 */
+ /* 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 void psymtab_to_symtab_1(pst)
- struct partial_symtab *pst;
+static int
+cross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name)
+ int fd;
+ 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;
{
- int i, f_max;
- struct symtab *st;
- FDR *fh;
-
- if (pst->readin)
- return;
- pst->readin = 1;
-
- pending_list = (struct pending **) cur_hdr->cbOptOffset;
- if (pending_list == 0) {
- pending_list = (struct pending **)
- xzalloc(cur_hdr->ifdMax * sizeof(struct pending *));
- cur_hdr->cbOptOffset = (int)pending_list;
- }
+ RNDXR rn[1];
+ unsigned int rf;
+ int result = 1;
+ FDR *fh;
+ char *esh;
+ SYMR sh;
+ int xref_fd;
+ struct mips_pending *pend;
- /* How many symbols will we need */
- f_max = pst->n_global_syms + pst->n_static_syms;
- if (pst->ldsymoff == -1) {
- fh = 0;
- st = new_symtab( "unknown", f_max, 0);
- } else {
- fh = (FDR *) (cur_hdr->cbFdOffset) + pst->ldsymoff;
- f_max += fh->csym + fh->cpd;
- st = new_symtab(pst->filename, 2 * f_max, 2 * fh->cline);
- }
+ *tpp = (struct type *)NULL;
- /*
- * Read in all partial symbtabs on which this one is dependent.
- * NOTE that we do have circular dependencies, sigh.
- */
- for (i = 0; i < pst->number_of_dependencies; i++)
- if (!pst->dependencies[i]->readin) {
- /*
- * DO NOT inform about additional files that need to
- * be read in, it would only annoy the user.
- */
- psymtab_to_symtab_1(pst->dependencies[i]);
- }
+ ecoff_swap_rndx_in (bigend, &ax->a_rndx, rn);
- /* Now read the symbols for this symtab */
-
- cur_fd = pst->ldsymoff;
- cur_fdr = fh;
- cur_stab = st;
-
- /* Get a new lexical context */
-
- push_parse_stack();
- top_stack->cur_st = cur_stab;
- top_stack->cur_block = BLOCKVECTOR_BLOCK(BLOCKVECTOR(cur_stab),
- GLOBAL_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 = f_max;
- top_stack->cur_type = 0;
- top_stack->procadr = 0;
- top_stack->numargs = 0;
-
- /* Parse locals and procedures */
- if (fh)
- parse_one_file(fh, cur_fd, (cur_fd == (cur_hdr->ifdMax - 1)) ?
- cur_hdr->cbDnOffset : fh[1].adr);
-
- /* .. and our share of externals.
- XXX use the global list to speed up things here. how ? */
- top_stack->blocktype = stFile;
- top_stack->maxsyms = cur_hdr->isymMax + cur_hdr->ipdMax + cur_hdr->iextMax;
- for (i = 0; i < cur_hdr->iextMax; i++) {
- register EXTR *esh = (EXTR *) (cur_hdr->cbExtOffset) + i;
- if (esh->ifd == cur_fd)
- parse_external(esh, 1);
- }
+ /* Escape index means 'the next one' */
+ if (rn->rfd == 0xfff)
+ {
+ result++;
+ rf = AUX_GET_ISYM (bigend, ax + 1);
+ }
+ else
+ {
+ rf = rn->rfd;
+ }
- /* 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;
- }
+ /* mips cc uses a rf of -1 for opaque struct definitions.
+ Set TYPE_FLAG_STUB for these types so that check_stub_type will
+ resolve them if the struct gets defined in another compilation unit. */
+ if (rf == -1)
+ {
+ *pname = "<undefined>";
+ *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
+ TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB;
+ return result;
+ }
- pop_parse_stack();
+ /* mips cc uses an escaped rn->index of 0 for struct return types
+ of procedures that were compiled without -g. These will always remain
+ undefined. */
+ if (rn->rfd == 0xfff && rn->index == 0)
+ {
+ *pname = "<undefined>";
+ return result;
+ }
- /*
- * Sort the symbol table now, we are done adding symbols to it.
- */
- sort_symtab_syms(st);
-}
+ /* Find the relative file descriptor and the symbol in it. */
+ fh = get_rfd (fd, rf);
+ xref_fd = fh - ecoff_data (cur_bfd)->fdr;
+ if (rn->index >= fh->csym)
+ {
+ /* File indirect entry is corrupt. */
+ *pname = "<illegal>";
+ complain (&bad_rfd_entry_complaint,
+ sym_name, xref_fd, rn->index);
+ return result;
+ }
+ /* If we have processed this symbol then we left a forwarding
+ pointer to the type in the pending list. If not, we`ll put
+ it in a list of pending types, to be processed later when
+ the file will be. In any event, we collect the name for the
+ type here. */
+
+ 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);
+
+ /* Make sure that this type of cross reference can be handled. */
+ if (sh.sc != scInfo
+ || (sh.st != stBlock && sh.st != stTypedef
+ && sh.st != stStruct && sh.st != stUnion
+ && sh.st != stEnum))
+ {
+ /* File indirect entry is corrupt. */
+ *pname = "<illegal>";
+ complain (&bad_rfd_entry_complaint,
+ sym_name, xref_fd, rn->index);
+ return result;
+ }
-\f
-/* Ancillary parsing procedures. */
+ *pname = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss;
-/* Lookup the type at relative index RN. Return it in TPP
- if found and in any event come up with its name PNAME.
- Return value says how many aux symbols we ate */
+ pend = is_pending_symbol (fh, esh);
+ if (pend)
+ *tpp = pend->t;
+ else
+ {
+ /* We have not yet seen this type. */
-static
-cross_ref(rn, tpp, pname)
- RNDXR *rn;
- struct type **tpp;
- char **pname;
-{
- unsigned rf;
+ if (sh.iss == 0 && sh.st == stTypedef)
+ {
+ TIR tir;
+
+ /* alpha cc puts out a stTypedef with a sh.iss of zero for
+ two cases:
+ a) forward declarations of structs/unions/enums which are not
+ defined in this compilation unit.
+ For these the type will be void. This is a bad design decision
+ as cross referencing across compilation units is impossible
+ due to the missing name.
+ b) forward declarations of structs/unions/enums which are defined
+ later in this file or in another file in the same compilation
+ unit. Simply cross reference those again to get the
+ true type.
+ The forward references are not entered in the pending list and
+ in the symbol table. */
+
+ ecoff_swap_tir_in (bigend,
+ &(ecoff_data (cur_bfd)->external_aux
+ + fh->iauxBase + sh.index)->a_ti,
+ &tir);
+ if (tir.tq0 != tqNil)
+ complain (&illegal_forward_tq0_complaint, sym_name);
+ switch (tir.bt)
+ {
+ case btVoid:
+ *tpp = init_type (type_code, 0, 0, (char *) NULL,
+ current_objfile);
+ *pname = "<undefined>";
+ break;
+
+ case btStruct:
+ case btUnion:
+ case btEnum:
+ cross_ref (xref_fd,
+ (ecoff_data (cur_bfd)->external_aux
+ + fh->iauxBase + sh.index + 1),
+ tpp, type_code, pname,
+ fh->fBigendian, sym_name);
+ break;
- /* Escape index means 'the next one' */
- if (rn->rfd == 0xfff)
- rf = *(unsigned *) (rn + 1);
- else
- rf = rn->rfd;
-
- if (rf == -1) {
- /* Ooops */
- *pname = "<undefined>";
- } else {
- /*
- * Find the relative file descriptor and the symbol in it
- */
- FDR *fh = get_rfd(cur_fd, rf);
- SYMR *sh;
- struct type *t;
-
- /*
- * If we have processed this symbol then we left a forwarding
- * pointer to the corresponding GDB symbol. If not, we`ll put
- * it in a list of pending symbols, to be processed later when
- * the file f will be. In any event, we collect the name for
- * the type here. Which is why we made a first pass at
- * strings.
- */
- sh = (SYMR *) (fh->isymBase) + rn->index;
-
- /* Careful, we might be looking at .o files */
- *pname = (UNSAFE_DATA_ADDR(sh->iss)) ? "<undefined>" :
- (char *) sh->iss;
-
- /* Have we parsed it ? */
- if ((!UNSAFE_DATA_ADDR(sh->value)) && (sh->st == stParsed)) {
- t = (struct type *) sh->value;
- *tpp = t;
- } else {
- struct pending *p;
-
- /* Avoid duplicates */
- p = is_pending_symbol(fh, sh);
-
- if (p)
- *tpp = p->t;
- else
- add_pending(fh, sh, *tpp);
- }
+ default:
+ complain (&illegal_forward_bt_complaint, tir.bt, sym_name);
+ *tpp = init_type (type_code, 0, 0, (char *) NULL,
+ current_objfile);
+ break;
+ }
+ return result;
+ }
+ else if (sh.st == stTypedef)
+ {
+ /* Parse the type for a normal typedef. This might recursively call
+ cross_ref till we get a non typedef'ed type.
+ FIXME: This is not correct behaviour, but gdb currently
+ cannot handle typedefs without type copying. But type copying is
+ impossible as we might have mutual forward references between
+ two files and the copied type would not get filled in when
+ we later parse its definition. */
+ *tpp = parse_type (xref_fd,
+ (ecoff_data (cur_bfd)->external_aux
+ + fh->iauxBase + sh.index),
+ (int *)NULL,
+ fh->fBigendian,
+ (ecoff_data (cur_bfd)->ss
+ + fh->issBase + sh.iss));
+ }
+ else
+ {
+ /* Cross reference to a struct/union/enum which is defined
+ in another file in the same compilation unit but that file
+ has not been parsed yet.
+ Initialize the type only, it will be filled in when
+ it's definition is parsed. */
+ *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
}
- return (rn->rfd == 0xfff);
+ add_pending (fh, esh, *tpp);
+ }
+
+ /* We used one auxent normally, two if we got a "next one" rf. */
+ return result;
}
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))
- return sym;
- bot++;
- }
- if (block = BLOCK_SUPERBLOCK (block))
- return mylookup_symbol (name, block, namespace, class);
- return 0;
+ 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 */
+/* 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
-add_symbol(s,b)
- struct symbol *s;
- struct block *b;
+static void
+add_symbol (s, b)
+ struct symbol *s;
+ struct block *b;
{
- BLOCK_SYM(b,BLOCK_NSYMS(b)++) = s;
- if (b == top_stack->cur_block &&
- BLOCK_NSYMS(b) > top_stack->maxsyms)
- printf_filtered("Internal: block at @%x overfilled (by %d)\n",
- b, BLOCK_NSYMS(b) - top_stack->maxsyms);
+ 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
-add_block(b,s)
- struct block *b;
- struct symtab *s;
+static void
+add_block (b, s)
+ struct block *b;
+ struct symtab *s;
{
- struct blockvector *bv = BLOCKVECTOR(s);
+ struct blockvector *bv = BLOCKVECTOR (s);
- bv = (struct blockvector *)xrealloc(bv, sizeof(struct blockvector) +
- BLOCKVECTOR_NBLOCKS(bv) * sizeof(bv->block));
- if (bv != BLOCKVECTOR(s))
- BLOCKVECTOR(s) = bv;
+ 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;
+ BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
}
/* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
MIPS' linenumber encoding might need more than one byte
- to describe it, LAST is used to detect these continuation lines */
-
-static
-add_line(lt, lineno, adr, last)
- struct linetable *lt;
- CORE_ADDR adr;
-{
- 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
-/* Comparison functions, used when sorting things */
-
-/* Symtabs must be ordered viz the code segments they cover */
-
-static int
-compare_symtabs( s1, s2)
- struct symtab **s1, **s2;
-{
- /* "most specific" first */
-
- register struct block *b1, *b2;
- b1 = BLOCKVECTOR_BLOCK(BLOCKVECTOR(*s1),GLOBAL_BLOCK);
- b2 = BLOCKVECTOR_BLOCK(BLOCKVECTOR(*s2),GLOBAL_BLOCK);
- if (BLOCK_END(b1) == BLOCK_END(b2))
- return BLOCK_START(b1) - BLOCK_START(b2);
- return BLOCK_END(b1) - BLOCK_END(b2);
-}
-
-
-/* Partial Symtabs, same */
+ 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
-compare_psymtabs( s1, s2)
- struct partial_symtab **s1, **s2;
+add_line (lt, lineno, adr, last)
+ struct linetable *lt;
+ int lineno;
+ CORE_ADDR adr;
+ int last;
{
- /* Perf twist: put the ones with no code at the end */
-
- register int a = (*s1)->textlow;
- register int b = (*s2)->textlow;
- if (a == 0)
- return b;
- if (b == 0)
- return -a;
- return a - b;
-}
+ if (last == 0)
+ last = -2; /* make sure we record first line */
+ if (last == lineno) /* skip continuation lines */
+ return lineno;
-/* Partial symbols are compared lexicog by their print names */
-
-static int
-compare_psymbols (s1, s2)
- register struct partial_symbol *s1, *s2;
-{
- register char
- *st1 = SYMBOL_NAME(s1),
- *st2 = SYMBOL_NAME(s2);
-
- return (st1[0] - st2[0] ? st1[0] - st2[0] :
- strcmp(st1 + 1, st2 + 1));
+ 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(b1,b2)
- struct block **b1, **b2;
+static int
+compare_blocks (arg1, arg2)
+ const void *arg1, *arg2;
{
- register int addr_diff;
-
- addr_diff = (BLOCK_START((*b1))) - (BLOCK_START((*b2)));
- if (addr_diff == 0)
- return (BLOCK_END((*b1))) - (BLOCK_END((*b2)));
- return addr_diff;
+ 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;
}
-\f
-/* Sorting and reordering procedures */
-
/* Sort the blocks of a symtab S.
Reorder the blocks in the blockvector by code-address,
as required by some MI search routines */
-static
-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;
- 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));
-}
-
-/* Sort the symtab list, as required by some search procedures.
- We want files ordered to make them look right to users, and for
- searching (see block_for_pc). */
-
-static
-reorder_symtabs()
+static void
+sort_blocks (s)
+ struct symtab *s;
{
- register int i;
- struct symtab *stab;
- struct symtab **all_symtabs = (struct symtab **)
- obstack_alloc (psymbol_obstack,
- all_symtabs_count * sizeof (struct symtab *));
-
- /* Create an array of pointers to all the symtabs. */
- for (i = 0, stab = symtab_list;
- i < all_symtabs_count;
- i++, stab = stab->next) {
- all_symtabs[i] = stab;
- /* FIXME: Only do this for new symtabs ??? */
- sort_blocks(all_symtabs[i]);
- }
+ struct blockvector *bv = BLOCKVECTOR (s);
- qsort(all_symtabs, all_symtabs_count,
- sizeof(struct symtab *), compare_symtabs);
-
- /* Re-construct the symtab list, but now it is sorted. */
- for (i = 0; i < all_symtabs_count-1; i++)
- all_symtabs[i]->next = all_symtabs[i+1];
- all_symtabs[i]->next = 0;
- symtab_list = all_symtabs[0];
- obstack_free (psymbol_obstack, all_symtabs);
-}
-
-/* Sort the partial symtab list, as required by some search procedures */
-
-static reorder_psymtabs()
-{
- register int i;
- struct partial_symtab *pstab;
-
- /*
- * PC lookups stop at the first psymtab such that
- * textlow <= PC < texthigh
- */
- /* Create an array of pointers to all the partial_symtabs. */
- struct partial_symtab **all_psymtabs = (struct partial_symtab **)
- obstack_alloc (psymbol_obstack,
- all_psymtabs_count*sizeof(struct partial_symtab*));
- for (i = 0, pstab = partial_symtab_list;
- i < all_psymtabs_count;
- i++, pstab = pstab->next)
- all_psymtabs[i] = pstab;
-
- qsort(all_psymtabs, all_psymtabs_count,
- sizeof(struct partial_symtab *), compare_psymtabs);
-
- /* Re-construct the partial_symtab_list, but now it is sorted. */
-
- for (i = 0; i < all_psymtabs_count-1; i++)
- all_psymtabs[i]->next = all_psymtabs[i+1];
- all_psymtabs[i]->next = 0;
- partial_symtab_list = all_psymtabs[0];
-
- obstack_free (psymbol_obstack, all_psymtabs);
+ 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)
- char *name;
+static struct symtab *
+new_symtab (name, maxsyms, maxlines, objfile)
+ char *name;
+ int maxsyms;
+ int maxlines;
+ struct objfile *objfile;
{
- struct symtab *s = (struct symtab *) xzalloc(sizeof(struct symtab));
- int i;
-
- LINETABLE(s) = new_linetable(maxlines);
-
- s->filename = name;
-
- /* 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;
+ struct symtab *s = allocate_symtab (name, objfile);
- /* Link the new symtab into the list of such. */
- s->next = symtab_list;
- symtab_list = s;
+ LINETABLE (s) = new_linetable (maxlines);
- all_symtabs_count++;
+ /* 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);
- return s;
-}
-
-/* Cleanup before loading a fresh image */
+ s->free_code = free_linetable;
-static destroy_all_symtabs()
-{
- if (symfile)
- free(symfile);
- symfile = 0;
-
- free_all_symtabs();
- all_symtabs_count = 0;
- current_source_symtab = 0;
- /* psymtabs! */
+ return (s);
}
/* Allocate a new partial_symtab NAME */
static struct partial_symtab *
-new_psymtab(name)
- char *name;
+new_psymtab (name, objfile)
+ char *name;
+ struct objfile *objfile;
{
- struct partial_symtab *pst;
-
- pst = (struct partial_symtab *)
- obstack_alloc (psymbol_obstack, sizeof (*pst));
- bzero (pst, sizeof (*pst));
-
- if (name == (char*)-1) /* FIXME -- why not null here? */
- pst->filename = "<no name>";
- else
- pst->filename = name;
-
- pst->next = partial_symtab_list;
- partial_symtab_list = pst;
- all_psymtabs_count++;
+ struct partial_symtab *psymtab;
- /* Keep a backpointer to the file`s symbols */
- pst->ldsymlen = (int)cur_hdr;
+ psymtab = allocate_psymtab (name, objfile);
- /* The way to turn this into a symtab is to call... */
- pst->read_symtab = mipscoff_psymtab_to_symtab;
+ /* Keep a backpointer to the file's symbols */
- return pst;
-}
-
-
-/* Allocate a new NAME psymbol from LIST, extending it if necessary.
- The psymbol belongs to the psymtab at index PST_IDX */
-
-static struct partial_symbol *
-new_psymbol(list, name, pst_idx)
- struct psymbol_allocation_list *list;
- char *name;
-{
- struct partial_symbol *p;
- struct partial_symtab *pst = fdr_to_pst[pst_idx].pst;
-
- /* Lists are pre-sized, we won`t overflow */
+ 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;
- p = list->list + pst->globals_offset + pst->n_global_syms++;
- SYMBOL_NAME(p) = name;
- return p;
+ /* 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 */
+/* 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)
+static struct linetable *
+new_linetable (size)
+ int size;
{
- struct linetable *l;
+ struct linetable *l;
- size = size * sizeof(l->item) + sizeof(struct linetable);
- l = (struct linetable *)xmalloc(size);
- l->nitems = 0;
- return 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 */
+ I am not so sure about the 3.4 ones.
-static shrink_linetable(s)
- struct symtab *s;
+ 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;
{
- struct linetable *l = new_linetable(LINETABLE(s)->nitems);
- bcopy(LINETABLE(s), l,
- LINETABLE(s)->nitems * sizeof(l->item) + sizeof(struct linetable));
- free (LINETABLE(s));
- LINETABLE(s) = l;
+ 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)
+static struct blockvector *
+new_bvect (nblocks)
+ int nblocks;
{
- struct blockvector *bv;
- int size;
+ struct blockvector *bv;
+ int size;
- size = sizeof(struct blockvector) + nblocks * sizeof(struct block*);
- bv = (struct blockvector *) xzalloc(size);
+ size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
+ bv = (struct blockvector *) xzalloc (size);
- BLOCKVECTOR_NBLOCKS(bv) = nblocks;
+ BLOCKVECTOR_NBLOCKS (bv) = nblocks;
- return bv;
+ return bv;
}
/* Allocate and zero a new block of MAXSYMS symbols */
-static
-struct block *new_block(maxsyms)
+static struct block *
+new_block (maxsyms)
+ int maxsyms;
{
- int size = sizeof(struct block) + (maxsyms-1) * sizeof(struct symbol *);
- struct block *b = (struct block *)xzalloc(size);
+ int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
- return b;
+ return (struct block *) xzalloc (size);
}
-/* Ooops, too big. Shrink block B in symtab S to its minimal 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;
+shrink_block (b, s)
+ struct block *b;
+ struct symtab *s;
{
- struct block *new;
- struct blockvector *bv = BLOCKVECTOR(s);
- int i;
+ struct block *new;
+ struct blockvector *bv = BLOCKVECTOR (s);
+ int i;
- /* Just get a new one, copy, and fix references to the old one */
+ /* Just reallocate it and fix references to the old one */
- new = (struct block *)xmalloc(sizeof(struct block) +
- (BLOCK_NSYMS(b)-1) * sizeof(struct symbol *));
+ new = (struct block *) xrealloc ((PTR) b,
+ (sizeof (struct block)
+ + ((BLOCK_NSYMS (b) - 1)
+ * sizeof (struct symbol *))));
- bcopy(b, new, sizeof(*new) + (BLOCK_NSYMS(b) - 1) * sizeof(struct symbol*));
-
- /* Should chase pointers to old one. Fortunately, that`s just
+ /* Should chase pointers to old one. Fortunately, that`s just
the block`s function and inferior blocks */
- if (BLOCK_FUNCTION(b) && SYMBOL_BLOCK_VALUE(BLOCK_FUNCTION(b)) == b)
- SYMBOL_BLOCK_VALUE(BLOCK_FUNCTION(b)) = 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;
- free(b);
- return new;
+ 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;
+static struct symbol *
+new_symbol (name)
+ char *name;
{
- struct symbol *s = (struct symbol *)
- obstack_alloc (symbol_obstack, sizeof (struct symbol));
-
- bzero (s, sizeof (*s));
- SYMBOL_NAME(s) = name;
- return s;
+ 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 = (struct type *)
- obstack_alloc (symbol_obstack, sizeof (struct type));
-
- bzero (t, sizeof (*t));
- TYPE_NAME(t) = name;
- return t;
-}
-
-/* Create and initialize a new type with printname NAME.
- CODE and LENGTH are the initial info we put in,
- UNS says whether the type is unsigned or not. */
-
-static
-struct type *
-make_type(code, length, uns, name)
- enum type_code code;
- int length, uns;
+static struct type *
+new_type (name)
char *name;
{
- register struct type *type;
-
- type = (struct type *) xzalloc(sizeof(struct type));
- TYPE_CODE(type) = code;
- TYPE_LENGTH(type) = length;
- TYPE_FLAGS(type) = uns ? TYPE_FLAG_UNSIGNED : 0;
- TYPE_NAME(type) = name;
+ struct type *t;
- return type;
+ t = alloc_type (current_objfile);
+ TYPE_NAME (t) = name;
+ TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default;
+ return t;
}
+\f
-/* Allocate a new field named NAME to the type TYPE */
-
-static
-struct field *new_field(type,name)
- struct type *type;
- char *name;
-{
- struct field *f;
-
- /* Fields are kept in an array */
- if (TYPE_NFIELDS(type))
- TYPE_FIELDS(type) = (struct field*)xrealloc(TYPE_FIELDS(type),
- (TYPE_NFIELDS(type)+1) * sizeof(struct field));
- else
- TYPE_FIELDS(type) = (struct field*)xzalloc(2*sizeof(struct field));
- f = &(TYPE_FIELD(type,TYPE_NFIELDS(type)++));
- bzero(f, sizeof(struct field));
- if (name)
- f->name = name;
- return 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. */
-/* Make an enum constant for a member F of an enumerated type T */
+/* 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
-make_enum_constant(f,t)
- struct field *f;
- struct type *t;
+static void
+fixup_sigtramp ()
{
- struct symbol *s;
- /*
- * This is awful, but that`s the way it is supposed to be
- * (BTW, no need to free the real 'type', it's a builtin)
- */
- f->type = (struct type *) f->bitpos;
-
- s = new_symbol(f->name);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_CONST;
- SYMBOL_TYPE(s) = t;
- SYMBOL_VALUE(s) = f->bitpos;
- add_symbol(s, top_stack->cur_block);
-}
+ struct symbol *s;
+ struct symtab *st;
+ struct block *b, *b0 = NULL;
+ sigtramp_address = -1;
-\f
-/* Things used for calling functions in the inferior.
- These functions are exported to our companion
- mips-dep.c file and are here because they play
- with the symbol-table explicitly. */
-
-#if 0
-/* Need to make a new symbol on the fly for the dummy
- frame we put on the stack. Which goes in the.. */
+ /* 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);
+ }
-static struct symtab *dummy_symtab;
+ /* But maybe this program uses its own version of sigvec */
+ if (s == 0)
+ return;
-/* Make up a dummy symbol for the code we put at END_PC,
- of size SIZE, invoking a function with NARGS arguments
- and using a frame of FRAMESIZE bytes */
+ /* 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;
+ }
-mips_create_dummy_symbol(end_pc, size, nargs, framesize)
-{
- struct block *bl;
- struct symbol *g;
- struct mips_extra_func_info *gdbinfo;
-
- /* Allocate symtab if not done already */
- if (dummy_symtab == 0)
- dummy_symtab = new_symtab(".dummy_symtab.", 100, 0);
-
- /* Make a new block. Only needs one symbol */
- bl = new_block(1);
- BLOCK_START(bl) = end_pc - size;
- BLOCK_END(bl) = end_pc;
-
- BLOCK_SUPERBLOCK(bl) =
- BLOCKVECTOR_BLOCK(BLOCKVECTOR(dummy_symtab),GLOBAL_BLOCK);
- add_block(bl, dummy_symtab);
- sort_blocks(dummy_symtab);
-
- BLOCK_FUNCTION(bl) = new_symbol("??");
- SYMBOL_BLOCK_VALUE(BLOCK_FUNCTION(bl)) = bl;
- g = new_symbol(".gdbinfo.");
- BLOCK_SYM(bl,BLOCK_NSYMS(bl)++) = g;
-
- SYMBOL_NAMESPACE(g) = LABEL_NAMESPACE;
- SYMBOL_CLASS(g) = LOC_CONST;
- SYMBOL_TYPE(g) = builtin_type_void;
- gdbinfo = (struct mips_extra_func_info *)
- xzalloc(sizeof(struct mips_extra_func_info));
-
- SYMBOL_VALUE(g) = (long) gdbinfo;
-
- gdbinfo->numargs = nargs;
- gdbinfo->framesize = framesize;
- gdbinfo->framereg = 29;
- gdbinfo->pcreg = 31;
- gdbinfo->regmask = -2;
- gdbinfo->regoffset = -4;
- gdbinfo->fregmask = 0; /* XXX */
- gdbinfo->fregoffset = 0; /* XXX */
+ 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,
+ st->objfile);
+ 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) = (long) 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;
}
-/* We just returned from the dummy code at END_PC, drop its symbol */
-mips_destroy_dummy_symbol(end_pc)
+/* Fake up identical offsets for all sections. */
+
+struct section_offsets *
+mipscoff_symfile_offsets (objfile, addr)
+ struct objfile *objfile;
+ CORE_ADDR addr;
{
- struct block *bl;
- struct blockvector *bv = BLOCKVECTOR(dummy_symtab);
- int i;
-
- bl = block_for_pc(end_pc);
- free(BLOCK_FUNCTION(bl));
- free(SYMBOL_VALUE(BLOCK_SYM(bl,0)));
- free(BLOCK_SYM(bl,0));
-
- for (i = FIRST_LOCAL_BLOCK; i < BLOCKVECTOR_NBLOCKS(bv); i++)
- if (BLOCKVECTOR_BLOCK(bv,i) == bl)
- break;
- for (; i < BLOCKVECTOR_NBLOCKS(bv) - 1; i++)
- BLOCKVECTOR_BLOCK(bv,i) = BLOCKVECTOR_BLOCK(bv,i+1);
- BLOCKVECTOR_NBLOCKS(bv)--;
- sort_blocks(dummy_symtab);
- free(bl);
-}
-#endif
+ struct section_offsets *section_offsets;
+ int i;
-/* 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. */
+ section_offsets = ((struct section_offsets *)
+ obstack_alloc (&objfile->psymbol_obstack,
+ (sizeof (struct section_offsets)
+ + (sizeof (section_offsets->offsets)
+ * (SECT_OFF_MAX - 1)))));
-static
-fixup_sigtramp()
-{
- struct symbol *s;
- struct symtab *st;
- struct block *b, *b0;
-
- sigtramp_address = -1;
-
- /* We know it is sold as sigvec */
- s = lookup_symbol("sigvec", 0, VAR_NAMESPACE, 0, NULL);
-
- /* Most programs do not play with signals */
- if (s == 0)
- return;
-
- b0 = SYMBOL_BLOCK_VALUE(s);
-
- /* A label of sigvec, to be more precise */
- s = lookup_symbol("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
-
- /* But maybe this program uses its own version of sigvec */
- if (s == 0)
- return;
-
- sigtramp_address = SYMBOL_VALUE(s);
- sigtramp_end = sigtramp_address + 0x88; /* black magic */
-
- /* Did we or MIPSco fix the library ? */
- if (SYMBOL_CLASS(s) == LOC_BLOCK)
- return;
-
- /* 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) = make_type(TYPE_CODE_FUNC, 4, 0, 0);
- TYPE_TARGET_TYPE(SYMBOL_TYPE(s)) = builtin_type_void;
-
- /* Need a block to allocate .gdbinfo. 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 .gdbinfo. 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->framesize = 0x150;
- e->framereg = SP_REGNUM;
- e->pcreg = 31;
- e->regmask = -2;
- e->regoffset = -(41 * sizeof(int));
- e->fregmask = -1;
- e->fregoffset = -(37 * sizeof(int));
- e->isym = (long)s;
-
- s = new_symbol(".gdbinfo.");
- SYMBOL_VALUE(s) = (int) e;
- SYMBOL_NAMESPACE(s) = LABEL_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_CONST;
- SYMBOL_TYPE(s) = builtin_type_void;
- }
+ for (i = 0; i < SECT_OFF_MAX; i++)
+ ANOFFSET (section_offsets, i) = addr;
- BLOCK_SYM(b,BLOCK_NSYMS(b)++) = s;
+ return section_offsets;
}
-
\f
/* Initialization */
-static struct sym_fns ecoff_sym_fns = {"ecoff", 5,
- mipscoff_new_init, mipscoff_symfile_init,
- mipscoff_symfile_read, mipscoff_symfile_discard};
+static struct sym_fns ecoff_sym_fns =
+{
+ "ecoff", /* sym_name: name or name prefix of BFD target type */
+ 5, /* sym_namelen: number of significant sym_name chars */
+ mipscoff_new_init, /* sym_new_init: init anything gbl to entire symtab */
+ mipscoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */
+ mipscoff_symfile_read, /* sym_read: read a symbol file into symtab */
+ mipscoff_symfile_finish, /* sym_finish: finished with file, cleanup */
+ mipscoff_symfile_offsets, /* sym_offsets: dummy FIXME til implem sym reloc */
+ NULL /* next: pointer to next struct sym_fns */
+};
+
+void
_initialize_mipsread ()
{
- add_symtab_fns (&ecoff_sym_fns);
-
- bzero (&global_psymbols, sizeof (global_psymbols));
- bzero (&static_psymbols, sizeof (static_psymbols));
-
- /* Missing basic types */
- builtin_type_string = make_type(TYPE_CODE_PASCAL_ARRAY,
- 1, 0, "string");
- builtin_type_complex = make_type(TYPE_CODE_FLT,
- 2 * sizeof(float), 0, "complex");
- builtin_type_double_complex = make_type(TYPE_CODE_FLT,
- 2 * sizeof(double), 0, "double_complex");
- builtin_type_fixed_dec = make_type(TYPE_CODE_INT, sizeof(int),
- 0, "fixed_decimal");
- builtin_type_float_dec = make_type(TYPE_CODE_FLT, sizeof(double),
- 0, "floating_decimal");
-
- /* Templates types */
- builtin_type_ptr = lookup_pointer_type (builtin_type_void);
- builtin_type_struct = make_type(TYPE_CODE_STRUCT, 0, 0, 0);
- builtin_type_union = make_type(TYPE_CODE_UNION, 0, 0, 0);
- builtin_type_enum = make_type(TYPE_CODE_ENUM, 0, 0, 0);
- builtin_type_range = make_type(TYPE_CODE_RANGE, 0, 0, 0);
- builtin_type_set = make_type(TYPE_CODE_SET, 0, 0, 0);
+ 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);
}