/* Read coff symbol tables and convert to internal format, for GDB.
- Design and support routines derived from dbxread.c, and UMAX COFF
- specific routines written 9/1/87 by David D. Johnson, Brown University.
- Revised 11/27/87 ddj@cs.brown.edu
- Copyright (C) 1987, 1988, 1989 Free Software Foundation, Inc.
+ Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu).
+ Copyright 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
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. */
\f
#include "defs.h"
-#include "param.h"
-#ifdef COFF_FORMAT
#include "symtab.h"
+#include "gdbtypes.h"
+#include "breakpoint.h"
+#include "bfd.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include <obstack.h>
-#ifdef USG
-#include <sys/types.h>
-#include <fcntl.h>
-#endif
+#include <string.h>
-#include <a.out.h>
-#include <stdio.h>
-#include <obstack.h>
-#include <sys/param.h>
-#include <sys/file.h>
-
-static void add_symbol_to_list ();
-static void read_coff_symtab ();
-static void patch_opaque_types ();
-static struct type *decode_function_type ();
-static struct type *decode_type ();
-static struct type *decode_base_type ();
-static struct type *read_enum_type ();
-static struct type *read_struct_type ();
-static void finish_block ();
-static struct blockvector *make_blockvector ();
-static struct symbol *process_coff_symbol ();
-static int init_stringtab ();
-static void free_stringtab ();
-static char *getfilename ();
-static char *getsymname ();
-static int init_lineno ();
-static void enter_linenos ();
-
-extern int fclose ();
-extern void free_all_symtabs ();
-extern void free_all_psymtabs ();
-
-
-/* Name of source file whose symbol data we are now processing.
- This comes from a symbol named ".file". */
-
-static char *last_source_file;
+#include "coff/internal.h" /* Internal format of COFF symbols in BFD */
+#include "libcoff.h" /* FIXME secret internal data from BFD */
+
+/* To be an sdb debug type, type must have at least a basic or primary
+ derived type. Using this rather than checking against T_NULL is
+ said to prevent core dumps if we try to operate on Michael Bloom
+ dbx-in-coff file. */
+
+#define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK))
+
+/*
+ * Convert from an sdb register number to an internal gdb register number.
+ * This should be defined in tm.h, if REGISTER_NAMES is not set up
+ * to map one to one onto the sdb register numbers.
+ */
+#ifndef SDB_REG_TO_REGNUM
+# define SDB_REG_TO_REGNUM(value) (value)
+#endif
/* Core address of start and end of text of current source file.
This comes from a ".text" symbol where x_nlinno > 0. */
/* Core address of the end of the first object file. */
static CORE_ADDR first_object_file_end;
-/* End of the text segment of the executable file,
- as found in the symbol _etext. */
-
-static CORE_ADDR end_of_text_addr;
-
/* The addresses of the symbol table stream and number of symbols
of the object file we are reading (as copied into core). */
static FILE *nlist_stream_global;
static int nlist_nsyms_global;
-/* The file, a.out and text section headers of the symbol file */
-
-static FILHDR file_hdr;
-static SCNHDR text_hdr;
-static AOUTHDR aout_hdr;
-
-/* The index in the symbol table of the last coff symbol that was processed. */
-
-static int symnum;
-
-/* Vector of types defined so far, indexed by their coff symnum. */
-
-static struct typevector *type_vector;
-
-/* Number of elements allocated for type_vector currently. */
-
-static int type_vector_length;
-
/* Vector of line number information. */
static struct linetable *line_vector;
static int line_vector_length;
+/* Pointers to scratch storage, used for reading raw symbols and auxents. */
+
+static char *temp_sym;
+static char *temp_aux;
+
+/* Local variables that hold the shift and mask values for the
+ COFF file that we are currently reading. These come back to us
+ from BFD, and are referenced by their macro names, as well as
+ internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF
+ macros from ../internalcoff.h . */
+
+static unsigned local_n_btmask;
+static unsigned local_n_btshft;
+static unsigned local_n_tmask;
+static unsigned local_n_tshift;
+
+#define N_BTMASK local_n_btmask
+#define N_BTSHFT local_n_btshft
+#define N_TMASK local_n_tmask
+#define N_TSHIFT local_n_tshift
+
+/* Local variables that hold the sizes in the file of various COFF structures.
+ (We only need to know this to read them from the file -- BFD will then
+ translate the data in them, into `internal_xxx' structs in the right
+ byte order, alignment, etc.) */
+
+static unsigned local_linesz;
+static unsigned local_symesz;
+static unsigned local_auxesz;
+
+
/* Chain of typedefs of pointers to empty struct/union types.
- They are chained thru the SYMBOL_VALUE. */
+ They are chained thru the SYMBOL_VALUE_CHAIN. */
-#define HASHSIZE 127
static struct symbol *opaque_type_chain[HASHSIZE];
/* Record the symbols defined for each context in a list.
We don't create a struct block for the context until we
know how long to make it. */
-struct pending
+struct coff_pending
{
- struct pending *next;
+ struct coff_pending *next;
struct symbol *symbol;
};
/* Here are the three lists that symbols are put on. */
-struct pending *file_symbols; /* static at top level, and types */
+struct coff_pending *coff_file_symbols; /* static at top level, and types */
-struct pending *global_symbols; /* global functions and variables */
+struct coff_pending *coff_global_symbols; /* global functions and variables */
-struct pending *local_symbols; /* everything local to lexical context */
+struct coff_pending *coff_local_symbols; /* everything local to lexical context */
/* List of unclosed lexical contexts
(that will become blocks, eventually). */
-struct context_stack
+struct coff_context_stack
{
- struct context_stack *next;
- struct pending *locals;
+ struct coff_context_stack *next;
+ struct coff_pending *locals;
struct pending_block *old_blocks;
struct symbol *name;
CORE_ADDR start_addr;
int depth;
};
-struct context_stack *context_stack;
+struct coff_context_stack *coff_context_stack;
/* Nonzero if within a function (so symbols should be local,
if nothing says specifically). */
int within_function;
-/* List of blocks already made (lexical contexts already closed).
- This is used at the end to make the blockvector. */
+#if 0
+/* The type of the function we are currently reading in. This is
+ used by define_symbol to record the type of arguments to a function. */
-struct pending_block
-{
- struct pending_block *next;
- struct block *block;
-};
+struct type *in_function_type;
+#endif
struct pending_block *pending_blocks;
-extern CORE_ADDR startup_file_start; /* From blockframe.c */
-extern CORE_ADDR startup_file_end; /* From blockframe.c */
+/* Complaints about various problems in the file being read */
+
+struct complaint ef_complaint =
+ {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0};
+
+struct complaint bf_no_aux_complaint =
+ {"`.bf' symbol %d has no aux entry", 0, 0};
+
+struct complaint ef_no_aux_complaint =
+ {"`.ef' symbol %d has no aux entry", 0, 0};
+
+struct complaint lineno_complaint =
+ {"Line number pointer %d lower than start of line numbers", 0, 0};
+
+struct complaint unexpected_type_complaint =
+ {"Unexpected type for symbol %s", 0, 0};
+
+struct complaint bad_sclass_complaint =
+ {"Bad n_sclass for symbol %s", 0, 0};
+
+struct complaint misordered_blocks_complaint =
+ {"Blocks out of order at address %x", 0, 0};
+
+struct complaint tagndx_bad_complaint =
+ {"Symbol table entry for %s has bad tagndx value", 0, 0};
+
+/* Simplified internal version of coff symbol table information */
+
+struct coff_symbol {
+ char *c_name;
+ int c_symnum; /* symbol number of this entry */
+ int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */
+ long c_value;
+ int c_sclass;
+ int c_secnum;
+ unsigned int c_type;
+};
+
+static struct type *
+coff_read_struct_type PARAMS ((int, int, int));
+
+static struct type *
+decode_base_type PARAMS ((struct coff_symbol *, unsigned int,
+ union internal_auxent *));
+
+static struct type *
+decode_type PARAMS ((struct coff_symbol *, unsigned int,
+ union internal_auxent *));
+
+static struct type *
+decode_function_type PARAMS ((struct coff_symbol *, unsigned int,
+ union internal_auxent *));
+
+static struct type *
+coff_read_enum_type PARAMS ((int, int, int));
+
+static struct blockvector *
+make_blockvector PARAMS ((struct objfile *));
+
+static struct symbol *
+process_coff_symbol PARAMS ((struct coff_symbol *, union internal_auxent *,
+ struct objfile *));
+
+static void
+patch_opaque_types PARAMS ((struct symtab *));
+
+static void
+patch_type PARAMS ((struct type *, struct type *));
+
+static void
+enter_linenos PARAMS ((long, int, int));
-/* File name symbols were loaded from. */
+static int
+init_lineno PARAMS ((int, long, int));
+
+static char *
+getfilename PARAMS ((union internal_auxent *));
+
+static char *
+getsymname PARAMS ((struct internal_syment *));
+
+static void
+free_stringtab PARAMS ((void));
+
+static int
+init_stringtab PARAMS ((int, long));
+
+static void
+read_one_sym PARAMS ((struct coff_symbol *, struct internal_syment *,
+ union internal_auxent *));
+
+static void
+read_coff_symtab PARAMS ((long, int, struct objfile *));
+
+static void
+find_linenos PARAMS ((bfd *, sec_ptr, PTR));
+
+static void
+coff_symfile_init PARAMS ((struct objfile *));
+
+static void
+coff_new_init PARAMS ((struct objfile *));
+
+static void
+coff_symfile_read PARAMS ((struct objfile *, CORE_ADDR, int));
+
+static void
+coff_symfile_finish PARAMS ((struct objfile *));
+
+static void
+record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type));
+
+static void
+coff_end_symtab PARAMS ((struct objfile *));
+
+static void
+complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int));
+
+static void
+coff_start_symtab PARAMS ((void));
+
+static void
+coff_record_line PARAMS ((int, CORE_ADDR));
+
+static void
+coff_finish_block PARAMS ((struct symbol *, struct coff_pending **,
+ struct pending_block *, CORE_ADDR, CORE_ADDR,
+ struct objfile *));
+
+static void
+coff_add_symbol_to_list PARAMS ((struct symbol *, struct coff_pending **));
+
+static struct type *
+coff_alloc_type PARAMS ((int));
+
+static struct type **
+coff_lookup_type PARAMS ((int));
-static char *symfile;
\f
/* Look up a coff type-number index. Return the address of the slot
where the type for that index is stored.
if (type_vector_length < index) {
type_vector_length = index * 2;
}
- type_vector = (struct typevector *)
- xrealloc (type_vector, sizeof (struct typevector)
- + type_vector_length * sizeof (struct type *));
- bzero (&type_vector->type[ old_vector_length ],
+ type_vector = (struct type **)
+ xrealloc ((char *) type_vector,
+ type_vector_length * sizeof (struct type *));
+ memset (&type_vector[old_vector_length], 0,
(type_vector_length - old_vector_length) * sizeof(struct type *));
}
- return &type_vector->type[index];
+ return &type_vector[index];
}
/* Make sure there is a type allocated for type number index
/* If we are referring to a type not known at all yet,
allocate an empty type for it.
We will fill it in later if we find out how. */
- if (type == 0)
+ if (type == NULL)
{
- type = (struct type *) obstack_alloc (symbol_obstack,
- sizeof (struct type));
- bzero (type, sizeof (struct type));
+ type = alloc_type (current_objfile);
*type_addr = type;
}
return type;
/* Add a symbol to one of the lists of symbols. */
static void
-add_symbol_to_list (symbol, listhead)
+coff_add_symbol_to_list (symbol, listhead)
struct symbol *symbol;
- struct pending **listhead;
+ struct coff_pending **listhead;
{
- register struct pending *link
- = (struct pending *) xmalloc (sizeof (struct pending));
+ register struct coff_pending *link
+ = (struct coff_pending *) xmalloc (sizeof (struct coff_pending));
link->next = *listhead;
link->symbol = symbol;
Put the block on the list of pending blocks. */
static void
-finish_block (symbol, listhead, old_blocks, start, end)
+coff_finish_block (symbol, listhead, old_blocks, start, end, objfile)
struct symbol *symbol;
- struct pending **listhead;
+ struct coff_pending **listhead;
struct pending_block *old_blocks;
CORE_ADDR start, end;
+ struct objfile *objfile;
{
- register struct pending *next, *next1;
+ register struct coff_pending *next, *next1;
register struct block *block;
register struct pending_block *pblock;
struct pending_block *opblock;
for (next = *listhead, i = 0; next; next = next->next, i++);
block = (struct block *)
- obstack_alloc (symbol_obstack, sizeof (struct block) + (i - 1) * sizeof (struct symbol *));
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct block) + (i - 1) * sizeof (struct symbol *));
/* Copy the symbols into the block. */
for (next = *listhead; next; next = next1)
{
next1 = next->next;
- free (next);
+ free ((PTR)next);
}
*listhead = 0;
}
static struct blockvector *
-make_blockvector ()
+make_blockvector (objfile)
+ struct objfile *objfile;
{
register struct pending_block *next, *next1;
register struct blockvector *blockvector;
for (next = pending_blocks, i = 0; next; next = next->next, i++);
blockvector = (struct blockvector *)
- obstack_alloc (symbol_obstack, sizeof (struct blockvector) + (i - 1) * sizeof (struct block *));
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector) + (i - 1) * sizeof (struct block *));
/* Copy the blocks into the blockvector.
This is done in reverse order, which happens to put
the blocks into the proper order (ascending starting address).
- finish_block has hair to insert each block into the list
+ coff_finish_block has hair to insert each block into the list
after its subblocks in order to make sure this is true. */
BLOCKVECTOR_NBLOCKS (blockvector) = i;
for (next = pending_blocks; next; next = next1)
{
next1 = next->next;
- free (next);
+ free ((PTR)next);
}
pending_blocks = 0;
/* Manage the vector of line numbers. */
-static
-record_line (line, pc)
+static void
+coff_record_line (line, pc)
int line;
CORE_ADDR pc;
{
{
line_vector_length *= 2;
line_vector = (struct linetable *)
- xrealloc (line_vector, sizeof (struct linetable)
+ xrealloc ((char *) line_vector, sizeof (struct linetable)
+ (line_vector_length
* sizeof (struct linetable_entry)));
}
it indicates the start of data for one original source file. */
static void
-start_symtab ()
+coff_start_symtab ()
{
- file_symbols = 0;
- global_symbols = 0;
- context_stack = 0;
+ coff_file_symbols = 0;
+ coff_global_symbols = 0;
+ coff_context_stack = 0;
within_function = 0;
last_source_file = 0;
- /* Initialize the source file information for this file. */
+ /* Initialize the source file line number information for this file. */
+ if (line_vector) /* Unlikely, but maybe possible? */
+ free ((PTR)line_vector);
line_vector_index = 0;
line_vector_length = 1000;
prev_line_number = -2; /* Force first line number to be explicit */
+ line_vector_length * sizeof (struct linetable_entry));
}
-/* Save the vital information for use when closing off the current file.
+/* Save the vital information from when starting to read a file,
+ for use when closing off the current file.
NAME is the file name the symbols came from, START_ADDR is the first
text address for the file, and SIZE is the number of bytes of text. */
cur_src_start_addr = start_addr;
cur_src_end_addr = start_addr + size;
- if (aout_hdr.entry < cur_src_end_addr
- && aout_hdr.entry >= cur_src_start_addr)
+ if (current_objfile -> ei.entry_point >= cur_src_start_addr &&
+ current_objfile -> ei.entry_point < cur_src_end_addr)
{
- startup_file_start = cur_src_start_addr;
- startup_file_end = cur_src_end_addr;
+ current_objfile -> ei.entry_file_lowpc = cur_src_start_addr;
+ current_objfile -> ei.entry_file_highpc = cur_src_end_addr;
}
}
struct symtab for that file and put it in the list of all such. */
static void
-end_symtab ()
+coff_end_symtab (objfile)
+ struct objfile *objfile;
{
register struct symtab *symtab;
- register struct context_stack *cstk;
+ register struct coff_context_stack *cstk;
register struct blockvector *blockvector;
register struct linetable *lv;
/* Finish the lexical context of the last function in the file. */
- if (context_stack)
+ if (coff_context_stack)
{
- cstk = context_stack;
- context_stack = 0;
+ cstk = coff_context_stack;
+ coff_context_stack = 0;
/* Make a block for the local symbols within. */
- finish_block (cstk->name, &local_symbols, cstk->old_blocks,
- cstk->start_addr, cur_src_end_addr);
- free (cstk);
+ coff_finish_block (cstk->name, &coff_local_symbols, cstk->old_blocks,
+ cstk->start_addr, cur_src_end_addr, objfile);
+ free ((PTR)cstk);
}
/* Ignore a file that has no functions with real debugging info. */
- if (pending_blocks == 0 && file_symbols == 0 && global_symbols == 0)
+ if (pending_blocks == 0 && coff_file_symbols == 0 && coff_global_symbols == 0)
{
- free (line_vector);
+ free ((PTR)line_vector);
line_vector = 0;
line_vector_length = -1;
last_source_file = 0;
return;
}
- /* Create the two top-level blocks for this file. */
- finish_block (0, &file_symbols, 0, cur_src_start_addr, cur_src_end_addr);
- finish_block (0, &global_symbols, 0, cur_src_start_addr, cur_src_end_addr);
+ /* It is unfortunate that in amdcoff, pending blocks might not be ordered
+ in this stage. Especially, blocks for static functions will show up at
+ the end. We need to sort them, so tools like `find_pc_function' and
+ `find_pc_block' can work reliably. */
+ if (pending_blocks) {
+ /* FIXME! Remove this horrid bubble sort and use qsort!!! */
+ int swapped;
+ do {
+ struct pending_block *pb, *pbnext;
+
+ pb = pending_blocks, pbnext = pb->next;
+ swapped = 0;
+
+ while ( pbnext ) {
+
+ /* swap blocks if unordered! */
+
+ if (BLOCK_START(pb->block) < BLOCK_START(pbnext->block)) {
+ struct block *tmp = pb->block;
+ complain (&misordered_blocks_complaint,
+ (char *) BLOCK_START (pb->block));
+ pb->block = pbnext->block;
+ pbnext->block = tmp;
+ swapped = 1;
+ }
+ pb = pbnext;
+ pbnext = pbnext->next;
+ }
+ } while (swapped);
+ }
+
+ /* Create the two top-level blocks for this file (STATIC_BLOCK and
+ GLOBAL_BLOCK). */
+ coff_finish_block (0, &coff_file_symbols, 0, cur_src_start_addr, cur_src_end_addr, objfile);
+ coff_finish_block (0, &coff_global_symbols, 0, cur_src_start_addr, cur_src_end_addr, objfile);
/* Create the blockvector that points to all the file's blocks. */
- blockvector = make_blockvector ();
+ blockvector = make_blockvector (objfile);
/* Now create the symtab object for this source file. */
- symtab = (struct symtab *) xmalloc (sizeof (struct symtab));
- symtab->free_ptr = 0;
+ symtab = allocate_symtab (last_source_file, objfile);
/* Fill in its components. */
symtab->blockvector = blockvector;
symtab->free_code = free_linetable;
+ symtab->free_ptr = 0;
symtab->filename = last_source_file;
+ symtab->dirname = NULL;
lv = line_vector;
lv->nitems = line_vector_index;
symtab->linetable = (struct linetable *)
- xrealloc (lv, (sizeof (struct linetable)
+ xrealloc ((char *) lv, (sizeof (struct linetable)
+ lv->nitems * sizeof (struct linetable_entry)));
- symtab->nlines = 0;
- symtab->line_charpos = 0;
- /* Link the new symtab into the list of such. */
- symtab->next = symtab_list;
- symtab_list = symtab;
+ free_named_symtabs (symtab->filename);
/* Reinitialize for beginning of new file. */
line_vector = 0;
last_source_file = 0;
}
\f
-/* Accumulate the misc functions in bunches of 127.
- At the end, copy them all into one newly allocated structure. */
-
-#define MISC_BUNCH_SIZE 127
-
-struct misc_bunch
-{
- struct misc_bunch *next;
- struct misc_function contents[MISC_BUNCH_SIZE];
-};
-
-/* Bunch currently being filled up.
- The next field points to chain of filled bunches. */
-
-static struct misc_bunch *misc_bunch;
-
-/* Number of slots filled in current bunch. */
-
-static int misc_bunch_index;
-
-/* Total number of misc functions recorded so far. */
-
-static int misc_count;
-
static void
-init_misc_functions ()
-{
- misc_count = 0;
- misc_bunch = 0;
- misc_bunch_index = MISC_BUNCH_SIZE;
-}
-
-static void
-record_misc_function (name, address)
+record_minimal_symbol (name, address, type)
char *name;
CORE_ADDR address;
+ enum minimal_symbol_type type;
{
- register struct misc_bunch *new;
-
- if (misc_bunch_index == MISC_BUNCH_SIZE)
- {
- new = (struct misc_bunch *) xmalloc (sizeof (struct misc_bunch));
- misc_bunch_index = 0;
- new->next = misc_bunch;
- misc_bunch = new;
- }
- misc_bunch->contents[misc_bunch_index].name = savestring (name, strlen (name));
- misc_bunch->contents[misc_bunch_index].address = address;
- misc_bunch->contents[misc_bunch_index].type = mf_unknown;
- misc_bunch_index++;
- misc_count++;
+ /* We don't want TDESC entry points in the minimal symbol table */
+ if (name[0] == '@') return;
+
+ /* mst_text isn't true, but apparently COFF doesn't tell us what it really
+ is, so this guess is more useful than mst_unknown. */
+ prim_record_minimal_symbol (savestring (name, strlen (name)),
+ address,
+ type);
}
+\f
+/* coff_symfile_init ()
+ is the coff-specific initialization routine for reading symbols.
+ It is passed a struct objfile which contains, among other things,
+ the BFD for the file whose symbols are being read, and a slot for
+ a pointer to "private data" which we fill with cookies and other
+ treats for coff_symfile_read ().
+
+ We will only be called if this is a COFF or COFF-like file.
+ BFD handles figuring out the format of the file, and code in symtab.c
+ uses BFD's determination to vector to us.
+
+ The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */
+
+struct coff_symfile_info {
+ file_ptr min_lineno_offset; /* Where in file lowest line#s are */
+ file_ptr max_lineno_offset; /* 1+last byte of line#s in file */
+};
+
+static int text_bfd_scnum;
-/* if we see a function symbol, we do record_misc_function.
- * however, if it turns out the next symbol is '.bf', then
- * we call here to undo the misc definition
- */
static void
-unrecord_misc_function ()
+coff_symfile_init (objfile)
+ struct objfile *objfile;
{
- if (misc_bunch_index == 0)
- error ("Internal error processing symbol table, at symbol %d.",
- symnum);
- misc_bunch_index--;
- misc_count--;
-}
+ asection *section;
+ bfd *abfd = objfile->obfd;
+ /* Allocate struct to keep track of the symfile */
+ objfile -> sym_private = xmmalloc (objfile -> md,
+ sizeof (struct coff_symfile_info));
-static int
-compare_misc_functions (fn1, fn2)
- struct misc_function *fn1, *fn2;
-{
- /* Return a signed result based on unsigned comparisons
- so that we sort into unsigned numeric order. */
- if (fn1->address < fn2->address)
- return -1;
- if (fn1->address > fn2->address)
- return 1;
- return 0;
-}
-
-static void
-discard_misc_bunches ()
-{
- register struct misc_bunch *next;
+ init_entry_point_info (objfile);
- while (misc_bunch)
- {
- next = misc_bunch->next;
- free (misc_bunch);
- misc_bunch = next;
- }
+ /* Save the section number for the text section */
+ section = bfd_get_section_by_name(abfd,".text");
+ if (section)
+ text_bfd_scnum = section->index;
+ else
+ text_bfd_scnum = -1;
}
+/* This function is called for every section; it finds the outer limits
+ of the line table (minimum and maximum file offset) so that the
+ mainline code can read the whole thing for efficiency. */
+
+/* ARGSUSED */
static void
-condense_misc_bunches ()
+find_linenos (abfd, asect, vpinfo)
+ bfd *abfd;
+ sec_ptr asect;
+ PTR vpinfo;
{
- register int i, j;
- register struct misc_bunch *bunch;
-#ifdef NAMES_HAVE_UNDERSCORE
- int offset = 1;
-#else
- int offset = 0;
-#endif
+ struct coff_symfile_info *info;
+ int size, count;
+ file_ptr offset, maxoff;
- misc_function_vector
- = (struct misc_function *)
- xmalloc (misc_count * sizeof (struct misc_function));
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ count = asect->lineno_count;
+/* End of warning */
- j = 0;
- bunch = misc_bunch;
- while (bunch)
- {
- for (i = 0; i < misc_bunch_index; i++)
- {
- register char *tmp;
+ if (count == 0)
+ return;
+ size = count * local_linesz;
- misc_function_vector[j] = bunch->contents[i];
- tmp = misc_function_vector[j].name;
- misc_function_vector[j].name = (tmp[0] == '_' ? tmp + offset : tmp);
- j++;
- }
- bunch = bunch->next;
- misc_bunch_index = MISC_BUNCH_SIZE;
- }
-
- misc_function_count = j;
+ info = (struct coff_symfile_info *)vpinfo;
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ offset = asect->line_filepos;
+/* End of warning */
- /* Sort the misc functions by address. */
+ if (offset < info->min_lineno_offset || info->min_lineno_offset == 0)
+ info->min_lineno_offset = offset;
- qsort (misc_function_vector, j, sizeof (struct misc_function),
- compare_misc_functions);
+ maxoff = offset + size;
+ if (maxoff > info->max_lineno_offset)
+ info->max_lineno_offset = maxoff;
}
-/* Call sort_syms to sort alphabetically
- the symbols of each block of each symtab. */
-static int
-compare_symbols (s1, s2)
- struct symbol **s1, **s2;
-{
- /* Names that are less should come first. */
- register int namediff = strcmp (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2));
- if (namediff != 0) return namediff;
- /* For symbols of the same name, registers should come first. */
- return ((SYMBOL_CLASS (*s2) == LOC_REGISTER)
- - (SYMBOL_CLASS (*s1) == LOC_REGISTER));
-}
+/* The BFD for this file -- only good while we're actively reading
+ symbols into a psymtab or a symtab. */
-static void
-sort_syms ()
-{
- register struct symtab *s;
- register int i, nbl;
- register struct blockvector *bv;
- register struct block *b;
+static bfd *symfile_bfd;
- for (s = symtab_list; s; s = s->next)
- {
- bv = BLOCKVECTOR (s);
- nbl = BLOCKVECTOR_NBLOCKS (bv);
- for (i = 0; i < nbl; i++)
- {
- b = BLOCKVECTOR_BLOCK (bv, i);
- if (BLOCK_SHOULD_SORT (b))
- qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
- sizeof (struct symbol *), compare_symbols);
- }
- }
-}
-\f
-/* This is the symbol-file command. Read the file, analyze its symbols,
- and add a struct symtab to symtab_list. */
+/* Read a symbol file, after initialization by coff_symfile_init. */
+/* FIXME! Addr and Mainline are not used yet -- this will not work for
+ shared libraries or add_file! */
-void
-symbol_file_command (name)
- char *name;
+/* ARGSUSED */
+static void
+coff_symfile_read (objfile, addr, mainline)
+ struct objfile *objfile;
+ CORE_ADDR addr;
+ int mainline;
{
+ struct coff_symfile_info *info;
+ bfd *abfd = objfile->obfd;
+ coff_data_type *cdata = coff_data (abfd);
+ char *name = bfd_get_filename (abfd);
int desc;
+ register int val;
int num_symbols;
- int num_sections;
int symtab_offset;
- extern void close ();
- register int val;
- struct cleanup *old_chain;
-
- dont_repeat ();
-
- if (name == 0)
- {
- if (symtab_list && !query ("Discard symbol table? ", 0))
- error ("Not confirmed.");
- if (symfile)
- free (symfile);
- symfile = 0;
- free_all_symtabs ();
- return;
- }
-
- name = tilde_expand (name);
- make_cleanup (free, name);
-
- if (symtab_list && !query ("Load new symbol table from \"%s\"? ", name))
- error ("Not confirmed.");
-
- if (symfile)
- free (symfile);
- symfile = 0;
-
- {
- char *absolute_name;
-
- desc = openp (getenv ("PATH"), 1, name, O_RDONLY, 0, &absolute_name);
- if (desc < 0)
- perror_with_name (name);
- else
- name = absolute_name;
- }
-
- old_chain = make_cleanup (close, desc);
- make_cleanup (free_current_contents, &name);
-
- if ((num_symbols = read_file_hdr (desc, &file_hdr)) < 0)
- error ("File \"%s\" not in executable format.", name);
-
- /* If an a.out header is present, read it in. If not (e.g. a .o file)
- deal with its absence. */
- if (file_hdr.f_opthdr == 0
- || read_aout_hdr (desc, &aout_hdr, file_hdr.f_opthdr) < 0)
- {
- /* We will not actually be able to run code, since backtraces would
- fly off the bottom of the stack (there is no way to reliably
- detect bottom of stack), but that's fine since the kernel won't
- run something without an a.out header anyway. Passive examination
- of .o files is one place this might make sense. */
- /* ~0 will not be in any file. */
- aout_hdr.entry = ~0;
- /* set the startup file to be an empty range. */
- startup_file_start = 0;
- startup_file_end = 0;
- }
-
- if (num_symbols == 0)
- {
- free_all_symtabs ();
- error ("%s does not have a symbol-table.\n", name);
- }
-
- printf ("Reading symbol data from %s...", name);
- fflush (stdout);
-
- /* Throw away the old symbol table. */
-
- free_all_symtabs ();
- free_all_psymtabs (); /* Make sure that partial_symtab_list */
- /* is 0 also. */
-
- num_sections = file_hdr.f_nscns;
- symtab_offset = file_hdr.f_symptr;
-
- if (read_section_hdr (desc, _TEXT, &text_hdr, num_sections) < 0)
- error ("\"%s\": can't read text section header", name);
+ int stringtab_offset;
+
+ info = (struct coff_symfile_info *) objfile -> sym_private;
+ symfile_bfd = abfd; /* Kludge for swap routines */
+
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ desc = fileno ((FILE *)(abfd->iostream)); /* File descriptor */
+ num_symbols = bfd_get_symcount (abfd); /* How many syms */
+ symtab_offset = cdata->sym_filepos; /* Symbol table file offset */
+ stringtab_offset = symtab_offset + /* String table file offset */
+ num_symbols * cdata->local_symesz;
+
+ /* Set a few file-statics that give us specific information about
+ the particular COFF file format we're reading. */
+ local_linesz = cdata->local_linesz;
+ local_n_btmask = cdata->local_n_btmask;
+ local_n_btshft = cdata->local_n_btshft;
+ local_n_tmask = cdata->local_n_tmask;
+ local_n_tshift = cdata->local_n_tshift;
+ local_linesz = cdata->local_linesz;
+ local_symesz = cdata->local_symesz;
+ local_auxesz = cdata->local_auxesz;
+
+ /* Allocate space for raw symbol and aux entries, based on their
+ space requirements as reported by BFD. */
+ temp_sym = (char *) xmalloc
+ (cdata->local_symesz + cdata->local_auxesz);
+ temp_aux = temp_sym + cdata->local_symesz;
+ make_cleanup (free_current_contents, &temp_sym);
+/* End of warning */
/* 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, (PTR)info);
- val = init_lineno (desc, text_hdr.s_lnnoptr, text_hdr.s_nlnno);
+ 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);
/* Now read the string table, all at once. */
- val = init_stringtab (desc, symtab_offset + num_symbols * SYMESZ);
+ val = init_stringtab (desc, stringtab_offset);
if (val < 0)
- {
- free_all_symtabs ();
- printf ("\"%s\": can't get string table", name);
- fflush (stdout);
- return;
- }
+ error ("\"%s\": can't get string table", name);
make_cleanup (free_stringtab, 0);
- /* 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);
-
- init_misc_functions ();
- make_cleanup (discard_misc_bunches, 0);
+ init_minimal_symbol_collection ();
+ make_cleanup (discard_minimal_symbols, 0);
/* Now that the executable file is positioned at symbol table,
process it and define symbols accordingly. */
- read_coff_symtab (desc, num_symbols);
-
- patch_opaque_types ();
+ read_coff_symtab ((long)symtab_offset, num_symbols, objfile);
/* Sort symbols alphabetically within each block. */
- sort_syms ();
+ sort_all_symtab_syms ();
- /* Go over the misc functions and install them in vector. */
+ /* Install any minimal symbols that have been collected as the current
+ minimal symbols for this objfile. */
- condense_misc_bunches ();
-
- /* Don't allow char * to have a typename (else would get caddr_t.) */
-
- TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0;
-
- /* Make a default for file to list. */
-
- select_source_symtab (0);
-
- symfile = savestring (name, strlen (name));
-
- do_cleanups (old_chain);
+ install_minimal_symbols (objfile);
+}
- printf ("done.\n");
- fflush (stdout);
+static void
+coff_new_init (ignore)
+ struct objfile *ignore;
+{
+ /* Nothin' to do */
}
-/* Return name of file symbols were loaded from, or 0 if none.. */
+/* 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. */
-char *
-get_sym_file ()
+static void
+coff_symfile_finish (objfile)
+ struct objfile *objfile;
{
- return symfile;
+ if (objfile -> sym_private != NULL)
+ {
+ mfree (objfile -> md, objfile -> sym_private);
+ }
}
-\f
-/* Simplified internal version of coff symbol table information */
-
-struct coff_symbol {
- char *c_name;
- int c_symnum; /* symbol number of this entry */
- int c_nsyms; /* 1 if syment only, 2 if syment + auxent */
- long c_value;
- int c_sclass;
- int c_secnum;
- unsigned int c_type;
-};
+\f
/* Given pointers to a symbol table in coff style exec file,
analyze them and create struct symtab's describing the symbols.
NSYMS is the number of symbols in the symbol table.
We read them one at a time using read_one_sym (). */
static void
-read_coff_symtab (desc, nsyms)
- int desc;
+read_coff_symtab (symtab_offset, nsyms, objfile)
+ long symtab_offset;
int nsyms;
+ struct objfile *objfile;
{
- int newfd; /* Avoid multiple closes on same desc */
FILE *stream;
- register struct context_stack *new;
+ register struct coff_context_stack *new;
struct coff_symbol coff_symbol;
register struct coff_symbol *cs = &coff_symbol;
- static SYMENT main_sym;
- static AUXENT main_aux;
+ static struct internal_syment main_sym;
+ static union internal_auxent main_aux;
struct coff_symbol fcn_cs_saved;
- static SYMENT fcn_sym_saved;
- static AUXENT fcn_aux_saved;
-
+ static struct internal_syment fcn_sym_saved;
+ static union internal_auxent fcn_aux_saved;
+ struct symtab *s;
+
+ /* A .file is open. */
+ int in_source_file = 0;
int num_object_files = 0;
int next_file_symnum = -1;
- char *filestring;
- int depth;
- int fcn_first_line;
- int fcn_last_line;
- int fcn_start_addr;
- long fcn_line_ptr;
+
+ /* Name of the current file. */
+ char *filestring = "";
+ int depth = 0;
+ int fcn_first_line = 0;
+ int fcn_last_line = 0;
+ int fcn_start_addr = 0;
+ long fcn_line_ptr = 0;
struct cleanup *old_chain;
+ int val;
+ stream = fopen (objfile->name, FOPEN_RB);
+ if (!stream)
+ perror_with_name(objfile->name);
- newfd = dup (desc);
- if (newfd == -1)
- fatal ("Too many open files");
- stream = fdopen (newfd, "r");
+ /* Position to read the symbol table. */
+ val = fseek (stream, (long)symtab_offset, 0);
+ if (val < 0)
+ perror_with_name (objfile->name);
- old_chain = make_cleanup (free_all_symtabs, 0);
+ /* These cleanups will be discarded below if we succeed. */
+ old_chain = make_cleanup (free_objfile, objfile);
make_cleanup (fclose, stream);
+
+ current_objfile = objfile;
nlist_stream_global = stream;
nlist_nsyms_global = nsyms;
last_source_file = 0;
- bzero (opaque_type_chain, sizeof opaque_type_chain);
+ memset (opaque_type_chain, 0, sizeof opaque_type_chain);
+ if (type_vector) /* Get rid of previous one */
+ free ((PTR)type_vector);
type_vector_length = 160;
- type_vector = (struct typevector *)
- xmalloc (sizeof (struct typevector)
- + type_vector_length * sizeof (struct type *));
- bzero (type_vector->type, type_vector_length * sizeof (struct type *));
+ type_vector = (struct type **)
+ xmalloc (type_vector_length * sizeof (struct type *));
+ memset (type_vector, 0, type_vector_length * sizeof (struct type *));
- start_symtab ();
+ coff_start_symtab ();
symnum = 0;
while (symnum < nsyms)
QUIT; /* Make this command interruptable. */
read_one_sym (cs, &main_sym, &main_aux);
+#ifdef SEM
+ temp_sem_val = cs->c_name[0] << 24 | cs->c_name[1] << 16 |
+ cs->c_name[2] << 8 | cs->c_name[3];
+ if (int_sem_val == temp_sem_val)
+ last_coffsem = (int) strtol (cs->c_name+4, (char **) NULL, 10);
+#endif
+
if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE)
{
- CORE_ADDR last_file_end = cur_src_end_addr;
-
if (last_source_file)
- end_symtab ();
+ coff_end_symtab (objfile);
- start_symtab ();
+ coff_start_symtab ();
complete_symtab ("_globals_", 0, first_object_file_end);
/* done with all files, everything from here on out is globals */
}
/* Special case for file with type declarations only, no text. */
- if (!last_source_file && cs->c_type != T_NULL && cs->c_secnum == N_DEBUG)
+ if (!last_source_file && SDB_TYPE (cs->c_type)
+ && cs->c_secnum == N_DEBUG)
complete_symtab (filestring, 0, 0);
/* Typedefs should not be treated as symbol definitions. */
if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF)
{
- /* record as misc function. if we get '.bf' next,
+ /* record as a minimal symbol. if we get '.bf' next,
* then we undo this step
*/
- record_misc_function (cs->c_name, cs->c_value);
+ record_minimal_symbol (cs->c_name, cs->c_value, mst_text);
fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr;
fcn_start_addr = cs->c_value;
case C_LINE:
case C_ALIAS:
case C_HIDDEN:
- printf ("Bad n_sclass = %d\n", cs->c_sclass);
+ complain (&bad_sclass_complaint, cs->c_name);
break;
case C_FILE:
*/
if (last_source_file)
{
- end_symtab ();
- start_symtab ();
+ coff_end_symtab (objfile);
+ coff_start_symtab ();
}
- num_object_files++;
+ in_source_file = 1;
break;
case C_STAT:
if (cs->c_name[0] == '.') {
- if (strcmp (cs->c_name, _TEXT) == 0) {
- if (num_object_files == 1) {
+ if (strcmp (cs->c_name, ".text") == 0) {
+ /* FIXME: don't wire in ".text" as section name
+ or symbol name! */
+ if (++num_object_files == 1) {
/* last address of startup file */
first_object_file_end = cs->c_value +
main_aux.x_scn.x_scnlen;
}
- /* for some reason the old code didn't do
- * this if this section entry had
- * main_aux.x_scn.x_nlinno equal to 0
- */
- complete_symtab (filestring, cs->c_value,
- main_aux.x_scn.x_scnlen);
+ /* Check for in_source_file deals with case of
+ a file with debugging symbols
+ followed by a later file with no symbols. */
+ if (in_source_file)
+ complete_symtab (filestring, cs->c_value,
+ main_aux.x_scn.x_scnlen);
+ in_source_file = 0;
}
/* flush rest of '.' symbols */
break;
}
+ else if (!SDB_TYPE (cs->c_type)
+ && cs->c_name[0] == 'L'
+ && (strncmp (cs->c_name, "LI%", 3) == 0
+ || strncmp (cs->c_name, "LF%", 3) == 0
+ || strncmp (cs->c_name,"LC%",3) == 0
+ || strncmp (cs->c_name,"LP%",3) == 0
+ || strncmp (cs->c_name,"LPB%",4) == 0
+ || strncmp (cs->c_name,"LBB%",4) == 0
+ || strncmp (cs->c_name,"LBE%",4) == 0
+ || strncmp (cs->c_name,"LPBX%",5) == 0))
+ /* At least on a 3b1, gcc generates swbeg and string labels
+ that look like this. Ignore them. */
+ break;
/* fall in for static symbols that don't start with '.' */
case C_EXT:
- if (cs->c_sclass == C_EXT &&
- cs->c_secnum == N_ABS &&
- strcmp (cs->c_name, _ETEXT) == 0)
- end_of_text_addr = cs->c_value;
- if (cs->c_type == T_NULL) {
- if (cs->c_secnum <= 1) { /* text or abs */
- record_misc_function (cs->c_name, cs->c_value);
+ if (!SDB_TYPE (cs->c_type)) {
+ /* FIXME: This is BOGUS Will Robinson!
+ Coff should provide the SEC_CODE flag for executable sections,
+ then if we could look up sections by section number we
+ could see if the flags indicate SEC_CODE. If so, then
+ record this symbol as a function in the minimal symbol table.
+ But why are absolute syms recorded as functions, anyway? */
+ if (cs->c_secnum <= text_bfd_scnum+1) {/* text or abs */
+ record_minimal_symbol (cs->c_name, cs->c_value,
+ mst_text);
break;
} else {
- cs->c_type = T_INT;
+ record_minimal_symbol (cs->c_name, cs->c_value,
+ mst_data);
+ break;
}
}
- (void) process_coff_symbol (cs, &main_aux);
+ process_coff_symbol (cs, &main_aux, objfile);
break;
case C_FCN:
if (strcmp (cs->c_name, ".bf") == 0)
{
-#if 0
- /* Don't do this; we want all functions to be on the
- mfl now. */
- unrecord_misc_function ();
-#endif
-
within_function = 1;
/* value contains address of first non-init type code */
/* main_aux.x_sym.x_misc.x_lnsz.x_lnno
contains line number of '{' } */
+ if (cs->c_naux != 1)
+ complain (&bf_no_aux_complaint, (char *) cs->c_symnum);
fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
- new = (struct context_stack *)
- xmalloc (sizeof (struct context_stack));
+ new = (struct coff_context_stack *)
+ xmalloc (sizeof (struct coff_context_stack));
new->depth = depth = 0;
new->next = 0;
- context_stack = new;
+ coff_context_stack = new;
new->locals = 0;
new->old_blocks = pending_blocks;
new->start_addr = fcn_start_addr;
fcn_cs_saved.c_name = getsymname (&fcn_sym_saved);
new->name = process_coff_symbol (&fcn_cs_saved,
- &fcn_aux_saved);
+ &fcn_aux_saved, objfile);
}
else if (strcmp (cs->c_name, ".ef") == 0)
{
*/
/* { main_aux.x_sym.x_misc.x_lnsz.x_lnno
contains number of lines to '}' */
- fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
+ new = coff_context_stack;
+ if (new == 0)
+ {
+ complain (&ef_complaint, (char *) cs->c_symnum);
+ within_function = 0;
+ break;
+ }
+ if (cs->c_naux != 1) {
+ complain (&ef_no_aux_complaint, (char *) cs->c_symnum);
+ fcn_last_line = 0x7FFFFFFF;
+ } else {
+ fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
+ }
enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line);
- new = context_stack;
- if (new == 0)
- error ("Invalid symbol data; .bf/.ef/.bb/.eb symbol mismatch, at symbol %d.",
- symnum);
-
- finish_block (new->name, &local_symbols, new->old_blocks,
+ coff_finish_block (new->name, &coff_local_symbols, new->old_blocks,
new->start_addr,
+#if defined (FUNCTION_EPILOGUE_SIZE)
+ /* This macro should be defined only on
+ machines where the
+ fcn_aux_saved.x_sym.x_misc.x_fsize
+ field is always zero.
+ So use the .bf record information that
+ points to the epilogue and add the size
+ of the epilogue. */
+ cs->c_value + FUNCTION_EPILOGUE_SIZE,
+#else
fcn_cs_saved.c_value +
- fcn_aux_saved.x_sym.x_misc.x_fsize);
- context_stack = 0;
+ fcn_aux_saved.x_sym.x_misc.x_fsize,
+#endif
+ objfile
+ );
+ coff_context_stack = 0;
within_function = 0;
- free (new);
+ free ((PTR)new);
}
break;
case C_BLOCK:
if (strcmp (cs->c_name, ".bb") == 0)
{
- new = (struct context_stack *)
- xmalloc (sizeof (struct context_stack));
+ new = (struct coff_context_stack *)
+ xmalloc (sizeof (struct coff_context_stack));
depth++;
new->depth = depth;
- new->next = context_stack;
- context_stack = new;
- new->locals = local_symbols;
+ new->next = coff_context_stack;
+ coff_context_stack = new;
+ new->locals = coff_local_symbols;
new->old_blocks = pending_blocks;
new->start_addr = cs->c_value;
new->name = 0;
- local_symbols = 0;
+ coff_local_symbols = 0;
}
else if (strcmp (cs->c_name, ".eb") == 0)
{
- new = context_stack;
+ new = coff_context_stack;
if (new == 0 || depth != new->depth)
error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.",
symnum);
- if (local_symbols && context_stack->next)
+ if (coff_local_symbols && coff_context_stack->next)
{
/* Make a block for the local symbols within. */
- finish_block (0, &local_symbols, new->old_blocks,
- new->start_addr, cs->c_value);
+ coff_finish_block (0, &coff_local_symbols, new->old_blocks,
+ new->start_addr, cs->c_value, objfile);
}
depth--;
- local_symbols = new->locals;
- context_stack = new->next;
- free (new);
+ coff_local_symbols = new->locals;
+ coff_context_stack = new->next;
+ free ((PTR)new);
}
break;
default:
- (void) process_coff_symbol (cs, &main_aux);
+ process_coff_symbol (cs, &main_aux, objfile);
break;
}
}
if (last_source_file)
- end_symtab ();
+ coff_end_symtab (objfile);
fclose (stream);
+
+ /* Patch up any opaque types (references to types that are not defined
+ in the file where they are referenced, e.g. "struct foo *bar"). */
+ ALL_OBJFILE_SYMTABS (objfile, s)
+ patch_opaque_types (s);
+
discard_cleanups (old_chain);
+ current_objfile = NULL;
}
\f
/* Routines for reading headers and symbols from executable. */
+#ifdef FIXME
+/* Move these XXXMAGIC symbol defns into BFD! */
+
/* Read COFF file header, check magic number,
and return number of symbols. */
read_file_hdr (chan, file_hdr)
#endif
#ifdef CLIPPERMAGIC
case CLIPPERMAGIC:
+#endif
+#if defined (MC68KWRMAGIC) \
+ && (!defined (MC68MAGIC) || MC68KWRMAGIC != MC68MAGIC)
+ case MC68KWRMAGIC:
+#endif
+#ifdef MC68KROMAGIC
+ case MC68KROMAGIC:
+ case MC68KPGMAGIC:
+#endif
+#ifdef MC88DGMAGIC
+ case MC88DGMAGIC:
+#endif
+#ifdef MC88MAGIC
+ case MC88MAGIC:
#endif
+#ifdef I960ROMAGIC
+ case I960ROMAGIC: /* Intel 960 */
+#endif
+#ifdef I960RWMAGIC
+ case I960RWMAGIC: /* Intel 960 */
+#endif
return file_hdr->f_nsyms;
default:
#endif
}
}
+#endif
-read_aout_hdr (chan, aout_hdr, size)
- int chan;
- AOUTHDR *aout_hdr;
- int size;
-{
- lseek (chan, (long)FILHSZ, 0);
- if (size != sizeof (AOUTHDR))
- return -1;
- if (myread (chan, (char *)aout_hdr, size) != size)
- return -1;
- return 0;
-}
-
-read_section_hdr (chan, section_name, section_hdr, nsects)
- register int chan;
- register char *section_name;
- SCNHDR *section_hdr;
- register int nsects;
-{
- register int i;
-
- if (lseek (chan, FILHSZ + sizeof (AOUTHDR), 0) < 0)
- return -1;
-
- for (i = 0; i < nsects; i++)
- {
- if (myread (chan, (char *)section_hdr, SCNHSZ) < 0)
- return -1;
- if (strncmp (section_hdr->s_name, section_name, 8) == 0)
- return 0;
- }
- return -1;
-}
+/* Read the next symbol, swap it, and return it in both internal_syment
+ form, and coff_symbol form. Also return its first auxent, if any,
+ in internal_auxent form, and skip any other auxents. */
+static void
read_one_sym (cs, sym, aux)
register struct coff_symbol *cs;
- register SYMENT *sym;
- register AUXENT *aux;
+ register struct internal_syment *sym;
+ register union internal_auxent *aux;
{
+ int i;
+
cs->c_symnum = symnum;
- fread ((char *)sym, SYMESZ, 1, nlist_stream_global);
- cs->c_nsyms = (sym->n_numaux & 0xff) + 1;
- if (cs->c_nsyms == 2)
+ fread (temp_sym, local_symesz, 1, nlist_stream_global);
+ bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym);
+ cs->c_naux = sym->n_numaux & 0xff;
+ if (cs->c_naux >= 1)
{
- /* doc for coff says there is either no aux entry or just one */
- fread ((char *)aux, AUXESZ, 1, nlist_stream_global);
+ fread (temp_aux, local_auxesz, 1, nlist_stream_global);
+ bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass,
+ (char *)aux);
+ /* If more than one aux entry, read past it (only the first aux
+ is important). */
+ for (i = 1; i < cs->c_naux; i++)
+ fread (temp_aux, local_auxesz, 1, nlist_stream_global);
}
- else if (cs->c_nsyms > 2)
- error ("more than one aux symbol table entry at symnum=%d\n", symnum);
-
cs->c_name = getsymname (sym);
cs->c_value = sym->n_value;
cs->c_sclass = (sym->n_sclass & 0xff);
cs->c_secnum = sym->n_scnum;
cs->c_type = (unsigned) sym->n_type;
+ if (!SDB_TYPE (cs->c_type))
+ cs->c_type = 0;
- symnum += cs->c_nsyms;
+ symnum += 1 + cs->c_naux;
}
\f
/* Support for string table handling */
int chan;
long offset;
{
- long buffer;
+ long length;
int val;
+ unsigned char lengthbuf[4];
if (stringtab)
{
if (lseek (chan, offset, 0) < 0)
return -1;
- val = myread (chan, (char *)&buffer, sizeof buffer);
+ val = myread (chan, (char *)lengthbuf, sizeof lengthbuf);
+ length = bfd_h_get_32 (symfile_bfd, lengthbuf);
/* If no string table is needed, then the file may end immediately
after the symbols. Just return with `stringtab' set to null. */
- if (val != sizeof buffer || buffer == 0)
+ if (val != sizeof length || length < sizeof length)
return 0;
- stringtab = (char *) xmalloc (buffer);
+ stringtab = (char *) xmalloc (length);
if (stringtab == NULL)
return -1;
- bcopy (&buffer, stringtab, sizeof buffer);
+ memcpy (stringtab, &length, sizeof length);
+ if (length == sizeof length) /* Empty table -- just the count */
+ return 0;
- val = myread (chan, stringtab + sizeof buffer, buffer - sizeof buffer);
- if (val != buffer - sizeof buffer || stringtab[buffer - 1] != '\0')
+ val = myread (chan, stringtab + sizeof length, length - sizeof length);
+ if (val != length - sizeof length || stringtab[length - 1] != '\0')
return -1;
return 0;
static char *
getsymname (symbol_entry)
- SYMENT *symbol_entry;
+ struct internal_syment *symbol_entry;
{
static char buffer[SYMNMLEN+1];
char *result;
- if (symbol_entry->n_zeroes == 0)
+ if (symbol_entry->_n._n_n._n_zeroes == 0)
{
- result = stringtab + symbol_entry->n_offset;
+ result = stringtab + symbol_entry->_n._n_n._n_offset;
}
else
{
- strncpy (buffer, symbol_entry->n_name, SYMNMLEN);
+ strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN);
buffer[SYMNMLEN] = '\0';
result = buffer;
}
static char *
getfilename (aux_entry)
- AUXENT *aux_entry;
+ union internal_auxent *aux_entry;
{
static char buffer[BUFSIZ];
register char *temp;
char *result;
- extern char *rindex ();
#ifndef COFF_NO_LONG_FILE_NAMES
- if (aux_entry->x_file.x_foff != 0)
- strcpy (buffer, stringtab + aux_entry->x_file.x_foff);
+#if defined (x_zeroes)
+ /* Data General. */
+ if (aux_entry->x_zeroes == 0)
+ strcpy (buffer, stringtab + aux_entry->x_offset);
+#else /* no x_zeroes */
+ if (aux_entry->x_file.x_n.x_zeroes == 0)
+ strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset);
+#endif /* no x_zeroes */
else
-#endif
+#endif /* COFF_NO_LONG_FILE_NAMES */
{
+#if defined (x_name)
+ /* Data General. */
+ strncpy (buffer, aux_entry->x_name, FILNMLEN);
+#else
strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN);
+#endif
buffer[FILNMLEN] = '\0';
}
result = buffer;
- if ((temp = rindex (result, '/')) != NULL)
+ if ((temp = strrchr (result, '/')) != NULL)
result = temp + 1;
return (result);
}
-
+\f
/* Support for line number handling */
static char *linetab = NULL;
static long linetab_offset;
-static int linetab_count;
+static unsigned long linetab_size;
+/* Read in all the line numbers for fast lookups later. Leave them in
+ external (unswapped) format in memory; we'll swap them as we enter
+ them into GDB's data structures. */
+
static int
-init_lineno (chan, offset, count)
+init_lineno (chan, offset, size)
int chan;
long offset;
- int count;
+ int size;
{
int val;
+ linetab_offset = offset;
+ linetab_size = size;
+
+ if (size == 0)
+ return 0;
+
if (lseek (chan, offset, 0) < 0)
return -1;
- if (linetab)
- free (linetab);
- linetab = (char *) xmalloc (count * LINESZ);
+ /* Allocate the desired table, plus a sentinel */
+ linetab = (char *) xmalloc (size + local_linesz);
- val = myread (chan, linetab, count * LINESZ);
- if (val != count * LINESZ)
+ val = myread (chan, linetab, size);
+ if (val != size)
return -1;
- linetab_offset = offset;
- linetab_count = count;
+ /* Terminate it with an all-zero sentinel record */
+ memset (linetab + size, 0, local_linesz);
+
+ make_cleanup (free, linetab); /* Be sure it gets de-allocated. */
return 0;
}
+#if !defined (L_LNNO32)
+#define L_LNNO32(lp) ((lp)->l_lnno)
+#endif
+
static void
enter_linenos (file_offset, first_line, last_line)
long file_offset;
register int first_line;
register int last_line;
{
- register char *rawptr = &linetab[file_offset - linetab_offset];
- struct lineno lptr;
+ register char *rawptr;
+ struct internal_lineno lptr;
+
+ if (file_offset < linetab_offset)
+ {
+ complain (&lineno_complaint, (char *) file_offset);
+ if (file_offset > linetab_size) /* Too big to be an offset? */
+ return;
+ file_offset += linetab_offset; /* Try reading at that linetab offset */
+ }
+
+ rawptr = &linetab[file_offset - linetab_offset];
/* skip first line entry for each function */
- rawptr += LINESZ;
+ rawptr += local_linesz;
/* line numbers start at one for the first line of the function */
first_line--;
- /* Bcopy since occaisionally rawptr isn't pointing at long
- boundaries. */
- for (bcopy (rawptr, &lptr, LINESZ);
- lptr.l_lnno && lptr.l_lnno <= last_line;
- rawptr += LINESZ, bcopy (rawptr, &lptr, LINESZ))
- {
- record_line (first_line + lptr.l_lnno, lptr.l_addr.l_paddr);
- }
+ for (;;) {
+ bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr);
+ rawptr += local_linesz;
+ /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */
+ if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line)
+ coff_record_line (first_line + L_LNNO32 (&lptr), lptr.l_addr.l_paddr);
+ else
+ break;
+ }
}
\f
-static int
-hashname (name)
- char *name;
-{
- register char *p = name;
- register int total = p[0];
- register int c;
-
- c = p[1];
- total += c << 2;
- if (c)
- {
- c = p[2];
- total += c << 4;
- if (c)
- total += p[3] << 6;
- }
-
- return total % HASHSIZE;
-}
-
static void
patch_type (type, real_type)
struct type *type;
TYPE_LENGTH (target) = TYPE_LENGTH (real_target);
TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target);
TYPE_FIELDS (target) = (struct field *)
- obstack_alloc (symbol_obstack, field_size);
+ obstack_alloc (¤t_objfile -> type_obstack, field_size);
- bcopy (TYPE_FIELDS (real_target), TYPE_FIELDS (target), field_size);
+ memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size);
if (TYPE_NAME (real_target))
{
if (TYPE_NAME (target))
free (TYPE_NAME (target));
- TYPE_NAME (target) = concat (TYPE_NAME (real_target), "", "");
+ TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL);
}
}
-/* Patch up all appropriate typdef symbols in the opaque_type_chains
- so that they can be used to print out opaque data structures properly */
+/* Patch up all appropriate typedef symbols in the opaque_type_chains
+ so that they can be used to print out opaque data structures properly. */
static void
-patch_opaque_types ()
+patch_opaque_types (s)
+ struct symtab *s;
{
- struct symtab *s;
-
- /* Look at each symbol in the per-file block of each symtab. */
- for (s = symtab_list; s; s = s->next)
+ register struct block *b;
+ register int i;
+ register struct symbol *real_sym;
+
+ /* Go through the per-file symbols only */
+ b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
+ for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--)
{
- register struct block *b;
- register int i;
-
- /* Go through the per-file symbols only */
- b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), 1);
- for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--)
+ /* Find completed typedefs to use to fix opaque ones.
+ Remove syms from the chain when their types are stored,
+ but search the whole chain, as there may be several syms
+ from different files with the same name. */
+ real_sym = BLOCK_SYM (b, i);
+ if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF &&
+ SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE &&
+ TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR &&
+ TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0)
{
- register struct symbol *real_sym;
-
- /* Find completed typedefs to use to fix opaque ones.
- Remove syms from the chain when their types are stored,
- but search the whole chain, as there may be several syms
- from different files with the same name. */
- real_sym = BLOCK_SYM (b, i);
- if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF &&
- SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE &&
- TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR &&
- TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0)
+ register char *name = SYMBOL_NAME (real_sym);
+ register int hash = hashname (name);
+ register struct symbol *sym, *prev;
+
+ prev = 0;
+ for (sym = opaque_type_chain[hash]; sym;)
{
- register char *name = SYMBOL_NAME (real_sym);
- register int hash = hashname (name);
- register struct symbol *sym, *prev;
-
- prev = 0;
- for (sym = opaque_type_chain[hash]; sym;)
+ if (name[0] == SYMBOL_NAME (sym)[0] &&
+ !strcmp (name + 1, SYMBOL_NAME (sym) + 1))
{
- if (name[0] == SYMBOL_NAME (sym)[0] &&
- !strcmp (name + 1, SYMBOL_NAME (sym) + 1))
+ if (prev)
+ {
+ SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
+ }
+ else
+ {
+ opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym);
+ }
+
+ patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym));
+
+ if (prev)
{
- if (prev)
- SYMBOL_VALUE (prev) = SYMBOL_VALUE (sym);
- else
- opaque_type_chain[hash]
- = (struct symbol *) SYMBOL_VALUE (sym);
-
- patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym));
-
- if (prev)
- sym = (struct symbol *) SYMBOL_VALUE (prev);
- else
- sym = opaque_type_chain[hash];
+ sym = SYMBOL_VALUE_CHAIN (prev);
}
else
{
- prev = sym;
- sym = (struct symbol *) SYMBOL_VALUE (sym);
+ sym = opaque_type_chain[hash];
}
}
+ else
+ {
+ prev = sym;
+ sym = SYMBOL_VALUE_CHAIN (sym);
+ }
}
}
}
}
\f
static struct symbol *
-process_coff_symbol (cs, aux)
+process_coff_symbol (cs, aux, objfile)
register struct coff_symbol *cs;
- register AUXENT *aux;
+ register union internal_auxent *aux;
+ struct objfile *objfile;
{
register struct symbol *sym
- = (struct symbol *) obstack_alloc (symbol_obstack, sizeof (struct symbol));
+ = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
char *name;
- char *dot;
#ifdef NAMES_HAVE_UNDERSCORE
int offset = 1;
#else
int offset = 0;
#endif
+ struct type *temptype;
- bzero (sym, sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
name = cs->c_name;
name = (name[0] == '_' ? name + offset : name);
- SYMBOL_NAME (sym) = obstack_copy0 (symbol_obstack, name, strlen (name));
+ SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, strlen (name));
/* default assumptions */
SYMBOL_VALUE (sym) = cs->c_value;
if (ISFCN (cs->c_type))
{
- SYMBOL_TYPE (sym) =
- lookup_function_type (decode_function_type (cs, cs->c_type, aux));
+#if 0
+ /* FIXME: This has NOT been tested. The DBX version has.. */
+ /* Generate a template for the type of this function. The
+ types of the arguments will be added as we read the symbol
+ table. */
+ struct type *new = (struct type *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct type));
+
+ memcpy (new, lookup_function_type (decode_function_type (cs, cs->c_type, aux)),
+ sizeof(struct type));
+ SYMBOL_TYPE (sym) = new;
+ in_function_type = SYMBOL_TYPE(sym);
+#else
+ SYMBOL_TYPE(sym) =
+ lookup_function_type (decode_function_type (cs, cs->c_type, aux));
+#endif
+
SYMBOL_CLASS (sym) = LOC_BLOCK;
if (cs->c_sclass == C_STAT)
- add_symbol_to_list (sym, &file_symbols);
+ coff_add_symbol_to_list (sym, &coff_file_symbols);
else if (cs->c_sclass == C_EXT)
- add_symbol_to_list (sym, &global_symbols);
+ coff_add_symbol_to_list (sym, &coff_global_symbols);
}
else
{
case C_AUTO:
SYMBOL_CLASS (sym) = LOC_LOCAL;
- add_symbol_to_list (sym, &local_symbols);
+ coff_add_symbol_to_list (sym, &coff_local_symbols);
break;
case C_EXT:
SYMBOL_CLASS (sym) = LOC_STATIC;
- add_symbol_to_list (sym, &global_symbols);
+ SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value;
+ coff_add_symbol_to_list (sym, &coff_global_symbols);
break;
case C_STAT:
SYMBOL_CLASS (sym) = LOC_STATIC;
+ SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value;
if (within_function) {
/* Static symbol of local scope */
- add_symbol_to_list (sym, &local_symbols);
+ coff_add_symbol_to_list (sym, &coff_local_symbols);
}
else {
/* Static symbol at top level of file */
- add_symbol_to_list (sym, &file_symbols);
+ coff_add_symbol_to_list (sym, &coff_file_symbols);
}
break;
+#ifdef C_GLBLREG /* AMD coff */
+ case C_GLBLREG:
+#endif
case C_REG:
SYMBOL_CLASS (sym) = LOC_REGISTER;
- add_symbol_to_list (sym, &local_symbols);
+ SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value);
+ coff_add_symbol_to_list (sym, &coff_local_symbols);
break;
case C_LABEL:
case C_ARG:
SYMBOL_CLASS (sym) = LOC_ARG;
- add_symbol_to_list (sym, &local_symbols);
-#ifndef clipper
+#if 0
+ /* FIXME: This has not been tested. */
+ /* Add parameter to function. */
+ add_param_to_type(&in_function_type,sym);
+#endif
+ coff_add_symbol_to_list (sym, &coff_local_symbols);
+#if !defined (BELIEVE_PCC_PROMOTION)
/* If PCC says a parameter is a short or a char,
it is really an int. */
- if (SYMBOL_TYPE (sym) == builtin_type_char
- || SYMBOL_TYPE (sym) == builtin_type_short)
- SYMBOL_TYPE (sym) = builtin_type_int;
- else if (SYMBOL_TYPE (sym) == builtin_type_unsigned_char
- || SYMBOL_TYPE (sym) == builtin_type_unsigned_short)
- SYMBOL_TYPE (sym) = builtin_type_unsigned_int;
+ temptype = lookup_fundamental_type (current_objfile, FT_INTEGER);
+ if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype)
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
+ {
+ SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym))
+ ? lookup_fundamental_type (current_objfile,
+ FT_UNSIGNED_INTEGER)
+ : temptype;
+ }
#endif
break;
case C_REGPARM:
SYMBOL_CLASS (sym) = LOC_REGPARM;
- add_symbol_to_list (sym, &local_symbols);
-#ifndef clipper
+ SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value);
+ coff_add_symbol_to_list (sym, &coff_local_symbols);
+#if !defined (BELIEVE_PCC_PROMOTION)
/* If PCC says a parameter is a short or a char,
it is really an int. */
- if (SYMBOL_TYPE (sym) == builtin_type_char
- || SYMBOL_TYPE (sym) == builtin_type_short)
- SYMBOL_TYPE (sym) = builtin_type_int;
- else if (SYMBOL_TYPE (sym) == builtin_type_unsigned_char
- || SYMBOL_TYPE (sym) == builtin_type_unsigned_short)
- SYMBOL_TYPE (sym) = builtin_type_unsigned_int;
+ temptype = lookup_fundamental_type (current_objfile, FT_INTEGER);
+ if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype)
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
+ {
+ SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym))
+ ? lookup_fundamental_type (current_objfile,
+ FT_UNSIGNED_INTEGER)
+ : temptype;
+ }
#endif
break;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
/* If type has no name, give it one */
- if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0
- && (TYPE_FLAGS (SYMBOL_TYPE (sym)) & TYPE_FLAG_PERM) == 0)
- TYPE_NAME (SYMBOL_TYPE (sym))
- = concat (SYMBOL_NAME (sym), "", "");
+ if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
+ TYPE_NAME (SYMBOL_TYPE (sym)) = concat (SYMBOL_NAME (sym), NULL);
/* Keep track of any type which points to empty structured type,
- so it can be filled from a definition from another file */
+ so it can be filled from a definition from another file. A
+ simple forward reference (TYPE_CODE_UNDEF) is not an
+ empty structured type, though; the forward references
+ work themselves out via the magic of coff_lookup_type. */
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR &&
- TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0)
+ TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 &&
+ TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) !=
+ TYPE_CODE_UNDEF)
{
register int i = hashname (SYMBOL_NAME (sym));
- SYMBOL_VALUE (sym) = (int) opaque_type_chain[i];
+ SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i];
opaque_type_chain[i] = sym;
}
- add_symbol_to_list (sym, &file_symbols);
+ coff_add_symbol_to_list (sym, &coff_file_symbols);
break;
case C_STRTAG:
case C_ENTAG:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
- if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0
- && (TYPE_FLAGS (SYMBOL_TYPE (sym)) & TYPE_FLAG_PERM) == 0)
+ if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
TYPE_NAME (SYMBOL_TYPE (sym))
= concat ("",
(cs->c_sclass == C_ENTAG
? "enum "
: (cs->c_sclass == C_STRTAG
? "struct " : "union ")),
- SYMBOL_NAME (sym));
- add_symbol_to_list (sym, &file_symbols);
+ SYMBOL_NAME (sym), NULL);
+ coff_add_symbol_to_list (sym, &coff_file_symbols);
break;
default:
decode_type (cs, c_type, aux)
register struct coff_symbol *cs;
unsigned int c_type;
- register AUXENT *aux;
+ register union internal_auxent *aux;
{
register struct type *type = 0;
- register int n;
unsigned int new_c_type;
if (c_type & ~N_BTMASK)
/* Define an array type. */
/* auxent refers to array, not base type */
- if (aux->x_sym.x_tagndx == 0)
- cs->c_nsyms = 1;
+ if (aux->x_sym.x_tagndx.l == 0)
+ cs->c_naux = 0;
/* shift the indices down */
dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0];
*dim = 0;
type = (struct type *)
- obstack_alloc (symbol_obstack, sizeof (struct type));
- bzero (type, sizeof (struct type));
+ obstack_alloc (¤t_objfile -> type_obstack,
+ sizeof (struct type));
+ memset (type, 0, sizeof (struct type));
+ TYPE_OBJFILE (type) = current_objfile;
base_type = decode_type (cs, new_c_type, aux);
return type;
}
- /* Reference to existing type */
- if (cs->c_nsyms > 1 && aux->x_sym.x_tagndx != 0)
+ /* Reference to existing type. This only occurs with the
+ struct, union, and enum types. EPI a29k coff
+ fakes us out by producing aux entries with a nonzero
+ x_tagndx for definitions of structs, unions, and enums, so we
+ have to check the c_sclass field. */
+ if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0)
{
- type = coff_alloc_type (aux->x_sym.x_tagndx);
- return type;
+ if (cs->c_sclass != C_STRTAG
+ && cs->c_sclass != C_UNTAG
+ && cs->c_sclass != C_ENTAG)
+ {
+ type = coff_alloc_type (aux->x_sym.x_tagndx.l);
+ return type;
+ } else {
+ complain (&tagndx_bad_complaint, cs->c_name);
+ /* And fall through to decode_base_type... */
+ }
}
return decode_base_type (cs, BTYPE (c_type), aux);
decode_function_type (cs, c_type, aux)
register struct coff_symbol *cs;
unsigned int c_type;
- register AUXENT *aux;
+ register union internal_auxent *aux;
{
- if (aux->x_sym.x_tagndx == 0)
- cs->c_nsyms = 1; /* auxent refers to function, not base type */
+ if (aux->x_sym.x_tagndx.l == 0)
+ cs->c_naux = 0; /* auxent refers to function, not base type */
- return decode_type (cs, DECREF (cs->c_type), aux);
+ return decode_type (cs, DECREF (c_type), aux);
}
\f
/* basic C types */
decode_base_type (cs, c_type, aux)
register struct coff_symbol *cs;
unsigned int c_type;
- register AUXENT *aux;
+ register union internal_auxent *aux;
{
struct type *type;
{
case T_NULL:
/* shows up with "void (*foo)();" structure members */
- return builtin_type_void;
+ return lookup_fundamental_type (current_objfile, FT_VOID);
+#if 0
+/* DGUX actually defines both T_ARG and T_VOID to the same value. */
+#ifdef T_ARG
case T_ARG:
- /* shouldn't show up here */
- break;
+ /* Shows up in DGUX, I think. Not sure where. */
+ return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */
+#endif
+#endif /* 0 */
+
+#ifdef T_VOID
+ case T_VOID:
+ /* Intel 960 COFF has this symbol and meaning. */
+ return lookup_fundamental_type (current_objfile, FT_VOID);
+#endif
case T_CHAR:
- return builtin_type_char;
+ return lookup_fundamental_type (current_objfile, FT_CHAR);
case T_SHORT:
- return builtin_type_short;
+ return lookup_fundamental_type (current_objfile, FT_SHORT);
case T_INT:
- return builtin_type_int;
+ return lookup_fundamental_type (current_objfile, FT_INTEGER);
case T_LONG:
- return builtin_type_long;
+ return lookup_fundamental_type (current_objfile, FT_LONG);
case T_FLOAT:
- return builtin_type_float;
+ return lookup_fundamental_type (current_objfile, FT_FLOAT);
case T_DOUBLE:
- return builtin_type_double;
+ return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT);
case T_STRUCT:
- if (cs->c_nsyms != 2)
+ if (cs->c_naux != 1)
{
/* anonymous structure type */
type = coff_alloc_type (cs->c_symnum);
TYPE_CODE (type) = TYPE_CODE_STRUCT;
- TYPE_NAME (type) = concat ("struct ", "<opaque>", "");
+ TYPE_NAME (type) = concat ("struct ", "<opaque>", NULL);
+ INIT_CPLUS_SPECIFIC(type);
TYPE_LENGTH (type) = 0;
TYPE_FIELDS (type) = 0;
TYPE_NFIELDS (type) = 0;
}
else
{
- type = read_struct_type (cs->c_symnum,
+ type = coff_read_struct_type (cs->c_symnum,
aux->x_sym.x_misc.x_lnsz.x_size,
- aux->x_sym.x_fcnary.x_fcn.x_endndx);
+ aux->x_sym.x_fcnary.x_fcn.x_endndx.l);
}
return type;
case T_UNION:
- if (cs->c_nsyms != 2)
+ if (cs->c_naux != 1)
{
/* anonymous union type */
type = coff_alloc_type (cs->c_symnum);
- TYPE_NAME (type) = concat ("union ", "<opaque>", "");
+ TYPE_NAME (type) = concat ("union ", "<opaque>", NULL);
+ INIT_CPLUS_SPECIFIC(type);
+ TYPE_LENGTH (type) = 0;
TYPE_LENGTH (type) = 0;
TYPE_FIELDS (type) = 0;
TYPE_NFIELDS (type) = 0;
}
else
{
- type = read_struct_type (cs->c_symnum,
+ type = coff_read_struct_type (cs->c_symnum,
aux->x_sym.x_misc.x_lnsz.x_size,
- aux->x_sym.x_fcnary.x_fcn.x_endndx);
+ aux->x_sym.x_fcnary.x_fcn.x_endndx.l);
}
TYPE_CODE (type) = TYPE_CODE_UNION;
return type;
case T_ENUM:
- return read_enum_type (cs->c_symnum,
+ return coff_read_enum_type (cs->c_symnum,
aux->x_sym.x_misc.x_lnsz.x_size,
- aux->x_sym.x_fcnary.x_fcn.x_endndx);
+ aux->x_sym.x_fcnary.x_fcn.x_endndx.l);
case T_MOE:
/* shouldn't show up here */
break;
case T_UCHAR:
- return builtin_type_unsigned_char;
+ return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR);
case T_USHORT:
- return builtin_type_unsigned_short;
+ return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT);
case T_UINT:
- return builtin_type_unsigned_int;
+ return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER);
case T_ULONG:
- return builtin_type_unsigned_long;
+ return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG);
}
- printf ("unexpected type %d at symnum %d\n", c_type, cs->c_symnum);
- return builtin_type_void;
+ complain (&unexpected_type_complaint, cs->c_name);
+ return lookup_fundamental_type (current_objfile, FT_VOID);
}
\f
/* This page contains subroutines of read_type. */
and return an object describing the type. */
static struct type *
-read_struct_type (index, length, lastsym)
+coff_read_struct_type (index, length, lastsym)
int index;
int length;
int lastsym;
#endif
struct coff_symbol member_sym;
register struct coff_symbol *ms = &member_sym;
- SYMENT sub_sym;
- AUXENT sub_aux;
+ struct internal_syment sub_sym;
+ union internal_auxent sub_aux;
int done = 0;
type = coff_alloc_type (index);
TYPE_CODE (type) = TYPE_CODE_STRUCT;
+ INIT_CPLUS_SPECIFIC(type);
TYPE_LENGTH (type) = length;
while (!done && symnum < lastsym && symnum < nlist_nsyms_global)
TYPE_NFIELDS (type) = nfields;
TYPE_FIELDS (type) = (struct field *)
- obstack_alloc (symbol_obstack, sizeof (struct field) * nfields);
+ obstack_alloc (¤t_objfile -> type_obstack,
+ sizeof (struct field) * nfields);
/* Copy the saved-up fields into the field vector. */
/* Read a definition of an enumeration type,
and create and return a suitable type object.
Also defines the symbols that represent the values of the type. */
+/* Currently assumes it's sizeof (int) and doesn't use length. */
+/* ARGSUSED */
static struct type *
-read_enum_type (index, length, lastsym)
+coff_read_enum_type (index, length, lastsym)
int index;
int length;
int lastsym;
register struct symbol *sym;
register struct type *type;
int nsyms = 0;
- struct pending **symlist;
+ int done = 0;
+ struct coff_pending **symlist;
struct coff_symbol member_sym;
register struct coff_symbol *ms = &member_sym;
- SYMENT sub_sym;
- AUXENT sub_aux;
- struct pending *osyms, *syms;
+ struct internal_syment sub_sym;
+ union internal_auxent sub_aux;
+ struct coff_pending *osyms, *syms;
register int n;
char *name;
#ifdef NAMES_HAVE_UNDERSCORE
type = coff_alloc_type (index);
if (within_function)
- symlist = &local_symbols;
+ symlist = &coff_local_symbols;
else
- symlist = &file_symbols;
+ symlist = &coff_file_symbols;
osyms = *symlist;
- while (symnum < lastsym && symnum < nlist_nsyms_global)
+ while (!done && symnum < lastsym && symnum < nlist_nsyms_global)
{
read_one_sym (ms, &sub_sym, &sub_aux);
name = ms->c_name;
{
case C_MOE:
sym = (struct symbol *) xmalloc (sizeof (struct symbol));
- bzero (sym, sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
SYMBOL_NAME (sym) = savestring (name, strlen (name));
SYMBOL_CLASS (sym) = LOC_CONST;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
SYMBOL_VALUE (sym) = ms->c_value;
- add_symbol_to_list (sym, symlist);
+ coff_add_symbol_to_list (sym, symlist);
nsyms++;
break;
case C_EOS:
+ /* Sometimes the linker (on 386/ix 2.0.2 at least) screws
+ up the count of how many symbols to read. So stop
+ on .eos. */
+ done = 1;
break;
}
}
/* Now fill in the fields of the type-structure. */
- TYPE_LENGTH (type) = sizeof (int);
+ TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT;
TYPE_CODE (type) = TYPE_CODE_ENUM;
TYPE_NFIELDS (type) = nsyms;
TYPE_FIELDS (type) = (struct field *)
- obstack_alloc (symbol_obstack, sizeof (struct field) * nsyms);
+ obstack_alloc (¤t_objfile -> type_obstack,
+ sizeof (struct field) * nsyms);
/* Find the symbols for the values and put them into the type.
The symbols can be found in the symlist that we put them on
TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (syms->symbol);
TYPE_FIELD_BITSIZE (type, n) = 0;
}
+ /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
+ if(TYPE_NFIELDS(type) == 2 &&
+ ((!strcmp(TYPE_FIELD_NAME(type,0),"TRUE") &&
+ !strcmp(TYPE_FIELD_NAME(type,1),"FALSE")) ||
+ (!strcmp(TYPE_FIELD_NAME(type,1),"TRUE") &&
+ !strcmp(TYPE_FIELD_NAME(type,0),"FALSE"))))
+ TYPE_CODE(type) = TYPE_CODE_BOOL;
return type;
}
-/* This function is really horrible, but to avoid it, there would need
- to be more filling in of forward references. THIS SHOULD BE MOVED
- OUT OF COFFREAD.C AND DBXREAD.C TO SOME PLACE WHERE IT CAN BE SHARED. */
-int
-fill_in_vptr_fieldno (type)
- struct type *type;
-{
- if (TYPE_VPTR_FIELDNO (type) < 0)
- TYPE_VPTR_FIELDNO (type) =
- fill_in_vptr_fieldno (TYPE_BASECLASS (type, 1));
- return TYPE_VPTR_FIELDNO (type);
-}
-
-/* partial symbol tables are not implemented in coff, therefore
- block_for_pc() (and others) will never decide to call this. */
+/* Register our ability to parse symbols for coff BFD files */
-extern struct symtab *
-psymtab_to_symtab ()
+static struct sym_fns coff_sym_fns =
{
- fatal ("error: Someone called psymtab_to_symtab\n");
-}
-
-/* These will stay zero all the time */
-struct psymbol_allocation_list global_psymbols, static_psymbols;
+ "coff", /* sym_name: name or name prefix of BFD target type */
+ 4, /* sym_namelen: number of significant sym_name chars */
+ coff_new_init, /* sym_new_init: init anything gbl to entire symtab */
+ coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */
+ coff_symfile_read, /* sym_read: read a symbol file into symtab */
+ coff_symfile_finish, /* sym_finish: finished with file, cleanup */
+ NULL /* next: pointer to next struct sym_fns */
+};
-_initialize_coff ()
+void
+_initialize_coffread ()
{
- symfile = 0;
-
- bzero (&global_psymbols, sizeof (global_psymbols));
- bzero (&static_psymbols, sizeof (static_psymbols));
-
- add_com ("symbol-file", class_files, symbol_file_command,
- "Load symbol table (in coff format) from executable file FILE.");
+ add_symtab_fns(&coff_sym_fns);
}
-
-
-#endif /* COFF_FORMAT */
-
projects / deliverable / binutils-gdb.git / blobdiff