/* 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 Free Software Foundation, Inc.
-
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
-
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
-
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
-\f
-#include "defs.h"
-#include "param.h"
-#ifdef COFF_FORMAT
-#include "initialize.h"
-#include "symtab.h"
+ Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu).
+ Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993
+ Free Software Foundation, Inc.
-#include <a.out.h>
-#include <stdio.h>
-#include <obstack.h>
-#include <sys/types.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 ();
-
-START_FILE
-
-/* Name of source file whose symbol data we are now processing.
- This comes from a symbol named ".file". */
-
-static char *last_source_file;
+This file is part of GDB.
-/* Core address of start and end of text of current source file.
- This comes from a ".text" symbol where x_nlinno > 0. */
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-static CORE_ADDR cur_src_start_addr;
-static CORE_ADDR cur_src_end_addr;
+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.
-/* End of the text segment of the executable file,
- as found in the symbol _etext. */
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-static CORE_ADDR end_of_text_addr;
+#include "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "breakpoint.h"
-/* The addresses of the symbol table stream and number of symbols
- of the object file we are reading (as copied into core). */
+#include "bfd.h"
+#include <obstack.h>
-static FILE *nlist_stream_global;
-static int nlist_nsyms_global;
+#include <string.h>
+
+#include <time.h> /* For time_t in libbfd.h. */
+#include <sys/types.h> /* For time_t, if not in time.h. */
+#include "libbfd.h" /* FIXME secret internal data from BFD */
+#include "coff/internal.h" /* Internal format of COFF symbols in BFD */
+#include "libcoff.h" /* FIXME secret internal data from BFD */
+
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include "gdb-stabs.h"
+#include "stabsread.h"
+#include "complaints.h"
+
+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 */
+
+ asection *stabsect; /* Section pointer for .stab section */
+ asection *stabstrsect; /* Section pointer for .stab section */
+ asection *stabindexsect; /* Section pointer for .stab.index section */
+ char *stabstrdata;
+};
-/* The file and text section headers of the symbol file */
+/* Translate an external name string into a user-visible name. */
+#define EXTERNAL_NAME(string, abfd) \
+ (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string)
-static FILHDR file_hdr;
-static SCNHDR text_hdr;
+/* 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. */
-/* The index in the symbol table of the last coff symbol that was processed. */
+#define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK))
-static int symnum;
+/*
+ * 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
-/* Vector of types defined so far, indexed by their coff symnum. */
+/* Core address of start and end of text of current source file.
+ This comes from a ".text" symbol where x_nlinno > 0. */
-static struct typevector *type_vector;
+static CORE_ADDR cur_src_start_addr;
+static CORE_ADDR cur_src_end_addr;
-/* Number of elements allocated for type_vector currently. */
+/* The addresses of the symbol table stream and number of symbols
+ of the object file we are reading (as copied into core). */
-static int type_vector_length;
+static GDB_FILE *nlist_stream_global;
+static int nlist_nsyms_global;
/* Vector of line number information. */
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. */
+#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
-{
- struct pending *next;
- struct symbol *symbol;
-};
+struct type *in_function_type;
+#endif
-/* Here are the three lists that symbols are put on. */
+struct pending_block *pending_blocks;
-struct pending *file_symbols; /* static at top level, and types */
+/* Complaints about various problems in the file being read */
-struct pending *global_symbols; /* global functions and variables */
+struct complaint ef_complaint =
+ {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0};
-struct pending *local_symbols; /* everything local to lexical context */
+struct complaint bf_no_aux_complaint =
+ {"`.bf' symbol %d has no aux entry", 0, 0};
-/* List of unclosed lexical contexts
- (that will become blocks, eventually). */
+struct complaint ef_no_aux_complaint =
+ {"`.ef' symbol %d has no aux entry", 0, 0};
-struct context_stack
-{
- struct context_stack *next;
- struct pending *locals;
- struct pending_block *old_blocks;
- struct symbol *name;
- CORE_ADDR start_addr;
- int depth;
-};
+struct complaint lineno_complaint =
+ {"Line number pointer %d lower than start of line numbers", 0, 0};
-struct context_stack *context_stack;
+struct complaint unexpected_type_complaint =
+ {"Unexpected type for symbol %s", 0, 0};
-/* Nonzero if within a function (so symbols should be local,
- if nothing says specifically). */
+struct complaint bad_sclass_complaint =
+ {"Bad n_sclass for symbol %s", 0, 0};
-int within_function;
+struct complaint misordered_blocks_complaint =
+ {"Blocks out of order at address %x", 0, 0};
-/* List of blocks already made (lexical contexts already closed).
- This is used at the end to make the blockvector. */
+struct complaint tagndx_bad_complaint =
+ {"Symbol table entry for %s has bad tagndx value", 0, 0};
-struct pending_block
-{
- struct pending_block *next;
- struct block *block;
+struct complaint eb_complaint =
+ {"Mismatched .eb symbol ignored starting at symnum %d", 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;
};
-struct pending_block *pending_blocks;
+static struct type *
+coff_read_struct_type PARAMS ((int, int, int));
-extern CORE_ADDR first_object_file_end; /* From blockframe.c */
+static struct type *
+decode_base_type PARAMS ((struct coff_symbol *, unsigned int,
+ union internal_auxent *));
-/* File name symbols were loaded from. */
+static struct type *
+decode_type PARAMS ((struct coff_symbol *, unsigned int,
+ union internal_auxent *));
-static char *symfile;
+static struct type *
+decode_function_type PARAMS ((struct coff_symbol *, unsigned int,
+ union internal_auxent *));
-int debug = 1;
+static struct type *
+coff_read_enum_type PARAMS ((int, int, int));
-\f
-/* Look up a coff type-number index. Return the address of the slot
- where the type for that index is stored.
- The type-number is in INDEX.
+static struct symbol *
+process_coff_symbol PARAMS ((struct coff_symbol *, union internal_auxent *,
+ struct objfile *));
- This can be used for finding the type associated with that index
- or for associating a new type with the index. */
+static void
+patch_opaque_types PARAMS ((struct symtab *));
-static struct type **
-coff_lookup_type (index)
- register int index;
-{
- if (index >= type_vector_length)
- {
- type_vector_length *= 2;
- type_vector = (struct typevector *)
- xrealloc (type_vector, sizeof (struct typevector)
- + type_vector_length * sizeof (struct type *));
- bzero (&type_vector->type[type_vector_length / 2],
- type_vector_length * sizeof (struct type *) / 2);
- }
- return &type_vector->type[index];
-}
+static void
+patch_type PARAMS ((struct type *, struct type *));
-/* Make sure there is a type allocated for type number index
- and return the type object.
- This can create an empty (zeroed) type object. */
+static void
+enter_linenos PARAMS ((long, int, int));
-static struct type *
-coff_alloc_type (index)
- int index;
-{
- register struct type **type_addr = coff_lookup_type (index);
- register struct type *type = *type_addr;
+static void
+free_linetab PARAMS ((void));
- /* 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)
- {
- type = (struct type *) obstack_alloc (symbol_obstack,
- sizeof (struct type));
- bzero (type, sizeof (struct type));
- *type_addr = type;
- }
- return type;
-}
-\f
-/* maintain the lists of symbols and blocks */
+static int
+init_lineno PARAMS ((int, long, int));
+
+static char *
+getsymname PARAMS ((struct internal_syment *));
-/* Add a symbol to one of the lists of symbols. */
static void
-add_symbol_to_list (symbol, listhead)
- struct symbol *symbol;
- struct pending **listhead;
-{
- register struct pending *link
- = (struct pending *) xmalloc (sizeof (struct pending));
+free_stringtab PARAMS ((void));
- link->next = *listhead;
- link->symbol = symbol;
- *listhead = link;
-}
+static int
+init_stringtab PARAMS ((int, long));
-/* Take one of the lists of symbols and make a block from it.
- Put the block on the list of pending blocks. */
+static void
+read_one_sym PARAMS ((struct coff_symbol *, struct internal_syment *,
+ union internal_auxent *));
static void
-finish_block (symbol, listhead, old_blocks, start, end)
- struct symbol *symbol;
- struct pending **listhead;
- struct pending_block *old_blocks;
- CORE_ADDR start, end;
-{
- register struct pending *next, *next1;
- register struct block *block;
- register struct pending_block *pblock;
- struct pending_block *opblock;
- register int i;
+read_coff_symtab PARAMS ((long, int, struct objfile *));
- /* Count the length of the list of symbols. */
+static void
+find_linenos PARAMS ((bfd *, sec_ptr, PTR));
- for (next = *listhead, i = 0; next; next = next->next, i++);
+static void
+coff_symfile_init PARAMS ((struct objfile *));
- block = (struct block *) xmalloc (sizeof (struct block) + (i - 1) * sizeof (struct symbol *));
+static void
+coff_new_init PARAMS ((struct objfile *));
- /* Copy the symbols into the block. */
+static void
+coff_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int));
- BLOCK_NSYMS (block) = i;
- for (next = *listhead; next; next = next->next)
- BLOCK_SYM (block, --i) = next->symbol;
+static void
+coff_symfile_finish PARAMS ((struct objfile *));
- BLOCK_START (block) = start;
- BLOCK_END (block) = end;
- BLOCK_SUPERBLOCK (block) = 0; /* Filled in when containing block is made */
+static void record_minimal_symbol
+ PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type, struct objfile *));
- /* Put the block in as the value of the symbol that names it. */
+static void
+coff_end_symtab PARAMS ((struct objfile *));
- if (symbol)
- {
- SYMBOL_BLOCK_VALUE (symbol) = block;
- BLOCK_FUNCTION (block) = symbol;
- }
- else
- BLOCK_FUNCTION (block) = 0;
+static void
+complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int));
- /* Now free the links of the list, and empty the list. */
+static void
+coff_start_symtab PARAMS ((void));
- for (next = *listhead; next; next = next1)
- {
- next1 = next->next;
- free (next);
- }
- *listhead = 0;
+static void
+coff_record_line PARAMS ((int, CORE_ADDR));
- /* Install this block as the superblock
- of all blocks made since the start of this scope
- that don't have superblocks yet. */
+static struct type *
+coff_alloc_type PARAMS ((int));
- opblock = 0;
- for (pblock = pending_blocks; pblock != old_blocks; pblock = pblock->next)
- {
- if (BLOCK_SUPERBLOCK (pblock->block) == 0)
- BLOCK_SUPERBLOCK (pblock->block) = block;
- opblock = pblock;
- }
+static struct type **
+coff_lookup_type PARAMS ((int));
+
+\f
+static void
+coff_locate_sections PARAMS ((bfd *, asection *, PTR));
+
+/* We are called once per section from coff_symfile_read. We
+ need to examine each section we are passed, check to see
+ if it is something we are interested in processing, and
+ if so, stash away some access information for the section.
+
+ FIXME: The section names should not be hardwired strings (what
+ should they be? I don't think most object file formats have enough
+ section flags to specify what kind of debug section it is
+ -kingdon). */
- /* Record this block on the list of all blocks in the file.
- Put it after opblock, or at the beginning if opblock is 0.
- This puts the block in the list after all its subblocks. */
+static void
+coff_locate_sections (ignore_abfd, sectp, csip)
+ bfd *ignore_abfd;
+ asection *sectp;
+ PTR csip;
+{
+ register struct coff_symfile_info *csi;
- pblock = (struct pending_block *) xmalloc (sizeof (struct pending_block));
- pblock->block = block;
- if (opblock)
+ csi = (struct coff_symfile_info *) csip;
+ if (STREQ (sectp->name, ".stab"))
{
- pblock->next = opblock->next;
- opblock->next = pblock;
+ csi->stabsect = sectp;
}
- else
+ else if (STREQ (sectp->name, ".stabstr"))
+ {
+ csi->stabstrsect = sectp;
+ }
+ else if (STREQ (sectp->name, ".stab.index"))
{
- pblock->next = pending_blocks;
- pending_blocks = pblock;
+ csi->stabindexsect = sectp;
}
}
-static struct blockvector *
-make_blockvector ()
-{
- register struct pending_block *next, *next1;
- register struct blockvector *blockvector;
- register int i;
-
- /* Count the length of the list of blocks. */
+/* Look up a coff type-number index. Return the address of the slot
+ where the type for that index is stored.
+ The type-number is in INDEX.
- for (next = pending_blocks, i = 0; next; next = next->next, i++);
+ This can be used for finding the type associated with that index
+ or for associating a new type with the index. */
- blockvector = (struct blockvector *) xmalloc (sizeof (struct blockvector) + (i - 1) * sizeof (struct block *));
+static struct type **
+coff_lookup_type (index)
+ register int index;
+{
+ if (index >= type_vector_length)
+ {
+ int old_vector_length = type_vector_length;
- /* 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
- after its subblocks in order to make sure this is true. */
+ type_vector_length *= 2;
+ if (index /* is still */ >= type_vector_length) {
+ type_vector_length = index * 2;
+ }
+ 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[index];
+}
- BLOCKVECTOR_NBLOCKS (blockvector) = i;
- for (next = pending_blocks; next; next = next->next)
- BLOCKVECTOR_BLOCK (blockvector, --i) = next->block;
+/* Make sure there is a type allocated for type number index
+ and return the type object.
+ This can create an empty (zeroed) type object. */
- /* Now free the links of the list, and empty the list. */
+static struct type *
+coff_alloc_type (index)
+ int index;
+{
+ register struct type **type_addr = coff_lookup_type (index);
+ register struct type *type = *type_addr;
- for (next = pending_blocks; next; next = next1)
+ /* 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 == NULL)
{
- next1 = next->next;
- free (next);
+ type = alloc_type (current_objfile);
+ *type_addr = type;
}
- pending_blocks = 0;
-
- return blockvector;
+ return type;
}
+\f
+/* Record a line number entry for line LINE at address PC.
+ FIXME: Use record_line instead. */
-/* Manage the vector of line numbers. */
-
-static
-record_line (line, pc)
+static void
+coff_record_line (line, pc)
int line;
CORE_ADDR pc;
{
+ struct linetable_entry *e;
/* Make sure line vector is big enough. */
if (line_vector_index + 2 >= line_vector_length)
{
line_vector_length *= 2;
line_vector = (struct linetable *)
- xrealloc (line_vector, sizeof (struct linetable)
- + line_vector_length * sizeof (int));
+ xrealloc ((char *) line_vector, sizeof (struct linetable)
+ + (line_vector_length
+ * sizeof (struct linetable_entry)));
}
- /* If this line is not continguous with previous one recorded,
- all lines between subsequent line and current one are same pc.
- Add one item to line vector, and if more than one line skipped,
- record a line-number entry for it. */
- if (prev_line_number > 0 && line != prev_line_number + 1)
- line_vector->item[line_vector_index++] = pc;
- if (prev_line_number < 0 || line > prev_line_number + 2)
- line_vector->item[line_vector_index++] = - line;
- prev_line_number = line;
-
- /* Record the core address of the line. */
- line_vector->item[line_vector_index++] = pc;
+ e = line_vector->item + line_vector_index++;
+ e->line = line; e->pc = pc;
}
\f
/* Start a new symtab for a new source file.
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;
- within_function = 0;
- last_source_file = 0;
-
- /* Initialize the source file information for this file. */
-
+ start_symtab (
+ /* We fill in the filename later. start_symtab
+ puts this pointer into last_source file and in
+ coff_end_symtab we assume we can free() it.
+ FIXME: leaks memory. */
+ savestring ("", 0),
+ /* We never know the directory name for COFF. */
+ NULL,
+ /* The start address is irrelevant, since we set
+ last_source_start_addr in coff_end_symtab. */
+ 0);
+
+ /* 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 = (struct linetable *)
- xmalloc (sizeof (struct linetable) + line_vector_length * sizeof (int));
+ xmalloc (sizeof (struct linetable)
+ + 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. */
last_source_file = savestring (name, strlen (name));
cur_src_start_addr = start_addr;
cur_src_end_addr = start_addr + size;
+
+ if (current_objfile -> ei.entry_point >= cur_src_start_addr &&
+ current_objfile -> ei.entry_point < cur_src_end_addr)
+ {
+ current_objfile -> ei.entry_file_lowpc = cur_src_start_addr;
+ current_objfile -> ei.entry_file_highpc = cur_src_end_addr;
+ }
}
/* Finish the symbol definitions for one main source file,
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 blockvector *blockvector;
- register struct linetable *lv;
+ struct symtab *symtab;
- /* Finish the lexical context of the last function in the file. */
+ last_source_start_addr = cur_src_start_addr;
- if (context_stack)
- {
- cstk = context_stack;
- /* 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);
- }
+ /* For no good reason, this file stores the number of entries in a
+ separate variable instead of in line_vector->nitems. Fix it. */
+ if (line_vector)
+ line_vector->nitems = line_vector_index;
+
+ /* For COFF, we only have one subfile, so we can just look at
+ subfiles and not worry about there being other elements in the
+ chain. We fill in various fields now because we didn't know them
+ before (or because doing it now is simply an artifact of how this
+ file used to be written). */
+ subfiles->line_vector = line_vector;
+ subfiles->name = last_source_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);
- blockvector = make_blockvector ();
-
- /* Now create the symtab objects proper this source file. */
-
- symtab = (struct symtab *) xmalloc (sizeof (struct symtab));
- /* Fill in its components. */
- symtab->blockvector = blockvector;
- symtab->free_code = free_contents;
- symtab->free_ptr = 0;
- symtab->filename = last_source_file;
- lv = line_vector;
- lv->nitems = line_vector_index;
- symtab->linetable = (struct linetable *)
- xrealloc (lv, sizeof (struct linetable) + lv->nitems * sizeof (int));
- symtab->nlines = 0;
- symtab->line_charpos = 0;
-
- /* Link the new symtab into the list of such. */
- symtab->next = symtab_list;
- symtab_list = symtab;
+ /* sort_pending is needed for amdcoff, at least.
+ sort_linevec is needed for the SCO compiler. */
+ symtab = end_symtab (cur_src_end_addr, 1, 1, objfile, 0);
+ if (symtab != NULL)
+ free_named_symtabs (symtab->filename);
+
+ /* Reinitialize for beginning of new file. */
line_vector = 0;
line_vector_length = -1;
- last_source_file = 0;
+ last_source_file = NULL;
}
\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, objfile)
char *name;
CORE_ADDR address;
+ enum minimal_symbol_type type;
+ struct objfile *objfile;
{
- register struct misc_bunch *new;
+ /* We don't want TDESC entry points in the minimal symbol table */
+ if (name[0] == '@') return;
- 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_index++;
- misc_count++;
+ prim_record_minimal_symbol (savestring (name, strlen (name)), address, type,
+ objfile);
}
+\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 ().
-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;
-}
+ 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.
-static void
-discard_misc_bunches ()
-{
- register struct misc_bunch *next;
+ The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */
- while (misc_bunch)
- {
- next = misc_bunch->next;
- free (misc_bunch);
- misc_bunch = next;
- }
-}
+static int text_bfd_scnum;
static void
-condense_misc_bunches ()
+coff_symfile_init (objfile)
+ struct objfile *objfile;
{
- register int i, j;
- register struct misc_bunch *bunch;
-#ifdef NAMES_HAVE_UNDERSCORE
- int offset = 1;
-#else
- int offset = 0;
-#endif
+ asection *section;
+ bfd *abfd = objfile->obfd;
- misc_function_vector
- = (struct misc_function *)
- xmalloc (misc_count * sizeof (struct misc_function));
+ /* Allocate struct to keep track of stab reading. */
+ objfile->sym_stab_info = (PTR)
+ xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info));
- j = 0;
- bunch = misc_bunch;
- while (bunch)
- {
- for (i = 0; i < misc_bunch_index; i++)
- {
- register char *tmp;
+ memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
- 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;
- }
+ /* Allocate struct to keep track of the symfile */
+ objfile -> sym_private = xmmalloc (objfile -> md,
+ sizeof (struct coff_symfile_info));
- misc_function_count = j;
+ memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info));
- /* Sort the misc functions by address. */
+ init_entry_point_info (objfile);
- qsort (misc_function_vector, j, sizeof (struct misc_function),
- compare_misc_functions);
+ /* 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;
}
-/* 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));
-}
+/* 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
-sort_syms ()
+find_linenos (abfd, asect, vpinfo)
+ bfd *abfd;
+ sec_ptr asect;
+ PTR vpinfo;
{
- register struct symtab *s;
- register int i, nbl;
- register struct blockvector *bv;
- register struct block *b;
+ struct coff_symfile_info *info;
+ int size, count;
+ file_ptr offset, maxoff;
- 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);
- 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. */
-
-void
-symbol_file_command (name)
- char *name;
-{
- int desc;
- 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.");
- free_all_symtabs ();
- return;
- }
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ count = asect->lineno_count;
+/* End of warning */
- if (symtab_list && !query ("Load new symbol table from \"%s\"? ", name))
- error ("Not confirmed.");
+ if (count == 0)
+ return;
+ size = count * local_linesz;
- if (symfile)
- free (symfile);
- symfile = 0;
+ info = (struct coff_symfile_info *)vpinfo;
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ offset = asect->line_filepos;
+/* End of warning */
- {
- char *absolute_name;
+ if (offset < info->min_lineno_offset || info->min_lineno_offset == 0)
+ info->min_lineno_offset = offset;
- desc = openp (getenv ("PATH"), 1, name, O_RDONLY, 0, &absolute_name);
- if (desc < 0)
- perror_with_name (name);
- else
- name = absolute_name;
- }
+ maxoff = offset + size;
+ if (maxoff > info->max_lineno_offset)
+ info->max_lineno_offset = maxoff;
+}
- 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);
+/* The BFD for this file -- only good while we're actively reading
+ symbols into a psymtab or a symtab. */
- if (num_symbols == 0)
- {
- free_all_symtabs ();
- printf ("%s does not have a symbol-table.\n", name);
- fflush (stdout);
- return;
- }
+static bfd *symfile_bfd;
- num_sections = file_hdr.f_nscns;
- symtab_offset = file_hdr.f_symptr;
+/* 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! */
- if (read_section_hdr (desc, _TEXT, &text_hdr, num_sections) < 0)
- error ("\"%s\": can't read text section header", name);
+/* ARGSUSED */
+static void
+coff_symfile_read (objfile, section_offsets, mainline)
+ struct objfile *objfile;
+ struct section_offsets *section_offsets;
+ int mainline;
+{
+ struct coff_symfile_info *info;
+ struct dbx_symfile_info *dbxinfo;
+ 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 symtab_offset;
+ int stringtab_offset;
+ struct cleanup *back_to;
+ int stabsize, stabstrsize;
+
+ info = (struct coff_symfile_info *) objfile -> sym_private;
+ dbxinfo = (struct dbx_symfile_info *) objfile->sym_stab_info;
+ symfile_bfd = abfd; /* Kludge for swap routines */
+
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ desc = fileno ((GDB_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;
+ back_to = 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);
+ make_cleanup (free_linetab, 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);
/* Now read the string table, all at once. */
- val = init_stringtab (desc, symtab_offset + num_symbols * SYMESZ);
- if (val < 0)
- 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);
+ val = init_stringtab (desc, stringtab_offset);
if (val < 0)
- perror_with_name (name);
-
- printf ("Reading symbol data from %s...", name);
- fflush (stdout);
-
- /* Throw away the old symbol table. */
-
- free_all_symtabs ();
+ error ("\"%s\": can't get string table", 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 ();
-
- /* Go over the misc functions and install them in vector. */
-
- condense_misc_bunches ();
-
- /* Don't allow char * to have a typename (else would get caddr_t.) */
+ {
+ struct symtab *s;
+ for (s = objfile -> symtabs; s != NULL; s = s -> next)
+ {
+ sort_symtab_syms (s);
+ }
+ }
- TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0;
+ /* Install any minimal symbols that have been collected as the current
+ minimal symbols for this objfile. */
- /* Make a default for file to list. */
+ install_minimal_symbols (objfile);
- select_source_symtab (symtab_list);
+ bfd_map_over_sections (abfd, coff_locate_sections, (PTR) info);
- symfile = savestring (name, strlen (name));
+ if (info->stabsect)
+ {
+ /* FIXME: dubious. Why can't we use something normal like
+ bfd_get_section_contents? */
+ fseek ((GDB_FILE *) abfd->iostream, abfd->where, 0);
+
+ stabsize = bfd_section_size (abfd, info->stabsect);
+ stabstrsize = bfd_section_size (abfd, info->stabstrsect);
+
+ coffstab_build_psymtabs (objfile,
+ section_offsets,
+ mainline,
+ info->stabsect->filepos, stabsize,
+ info->stabstrsect->filepos, stabstrsize);
+ }
- do_cleanups (old_chain);
+ do_cleanups (back_to);
+}
- printf ("done.\n");
- fflush (stdout);
+static void
+coff_new_init (ignore)
+ struct objfile *ignore;
+{
}
-/* 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;
{
- FILE *stream = fdopen (desc, "r");
+ GDB_FILE *stream;
register struct 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 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 next_file_symnum = -1;
+
+ /* 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;
+ int val;
+
+ stream = bfd_cache_lookup(objfile->obfd);
+ if (!stream)
+ perror_with_name(objfile->name);
+
+ /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous....
+ it's hard to know I've really worked around it. The fix should be
+ harmless, anyway). The symptom of the bug is that the first
+ fread (in read_one_sym), will (in my example) actually get data
+ from file offset 268, when the fseek was to 264 (and ftell shows
+ 264). This causes all hell to break loose. I was unable to
+ reproduce this on a short test program which operated on the same
+ file, performing (I think) the same sequence of operations.
+
+ It stopped happening when I put in this rewind().
+
+ FIXME: Find out if this has been reported to Sun, whether it has
+ been fixed in a later release, etc. */
+
+ rewind (stream);
- int num_object_files = 0;
- int next_file_symnum = 0;
- char *filestring;
- int depth;
- int fcn_first_line;
- int fcn_last_line;
- long fcn_line_ptr;
+ /* Position to read the symbol table. */
+ val = fseek (stream, (long)symtab_offset, 0);
+ if (val < 0)
+ perror_with_name (objfile->name);
+ current_objfile = objfile;
nlist_stream_global = stream;
nlist_nsyms_global = nsyms;
- last_source_file = 0;
- bzero (opaque_type_chain, sizeof opaque_type_chain);
+ last_source_file = NULL;
+ 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);
- /*
- * If we are finished with the previous file's symbols, and the
- * next thing is not a C_FILE, then we have hit the global symbols.
- */
+#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 ();
- complete_symtab ("_globals_", 0, first_object_file_end);
+ coff_start_symtab ();
+ complete_symtab ("_globals_", 0, 0);
/* done with all files, everything from here on out is globals */
}
- if (ISFCN (cs->c_type))
+ /* Special case for file with type declarations only, no text. */
+ 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)
{
- /*
- * gdb expects all functions to also be in misc_function
- * list -- why not...
- */
- record_misc_function (cs->c_name, cs->c_value);
+ /* Record all functions -- external and static -- in minsyms. */
+ record_minimal_symbol (cs->c_name, cs->c_value, mst_text, objfile);
fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr;
- within_function = 1;
-
- new = (struct context_stack *)
- xmalloc (sizeof (struct context_stack));
- new->depth = depth = 0;
- new->next = 0;
- context_stack = new;
- new->locals = 0;
- new->old_blocks = pending_blocks;
- new->start_addr = cs->c_value;
- new->name = process_coff_symbol (cs, &main_aux);
+ fcn_start_addr = cs->c_value;
+ fcn_cs_saved = *cs;
+ fcn_sym_saved = main_sym;
+ fcn_aux_saved = main_aux;
continue;
}
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:
* or symnum of first global after last .file.
*/
next_file_symnum = cs->c_value;
- filestring = getfilename (&main_aux);
+ if (cs->c_naux > 0)
+ filestring = coff_getfilename (&main_aux);
+ else
+ filestring = "";
+
/*
* Complete symbol table for last object file
* containing debugging information.
*/
if (last_source_file)
{
- end_symtab ();
- start_symtab ();
+ coff_end_symtab (objfile);
+ coff_start_symtab ();
}
- complete_symtab (filestring, 0, 0); /* FIXME, 0 0 is wrong */
- num_object_files++;
+ in_source_file = 1;
break;
- case C_EXT:
- if (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);
- break;
- }
- else
- cs->c_type = T_INT;
- }
- (void) process_coff_symbol (cs, &main_aux);
- break;
-
- case C_STAT:
- if (cs->c_type == T_NULL && cs->c_secnum > N_UNDEF)
- {
- /* These ".text", ".data", ".bss" entries don't seem to
- * appear in A/UX COFF output. -- gnu@toad.com 4Apr88
- */
- if (strcmp (cs->c_name, _TEXT) == 0)
- {
- /* We have a ".text" symbol */
- if (num_object_files == 1)
- {
- /* Record end address of first file, crt0.s */
- first_object_file_end =
- cs->c_value + main_aux.x_scn.x_scnlen;
- }
- /*
- * Fill in missing information for debugged
- * object file only if we have line number info.
- */
- if (main_aux.x_scn.x_nlinno > 0)
- {
- complete_symtab (filestring, cs->c_value,
- main_aux.x_scn.x_scnlen);
- }
+ case C_STAT:
+ if (cs->c_name[0] == '.') {
+ if (STREQ (cs->c_name, ".text")) {
+ /* FIXME: don't wire in ".text" as section name
+ or symbol name! */
+ /* 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 (strcmp (cs->c_name, _DATA) == 0)
- break;
- else if (strcmp (cs->c_name, _BSS) == 0)
- break;
-
- /* get rid of assembly labels here */
- /* record_misc_function (cs->c_name, cs->c_value); */
- break;
- }
- (void) process_coff_symbol (cs, &main_aux);
+ }
+ 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:
+ /* Record external symbols in minsyms if we don't have debug
+ info for them. FIXME, this is probably the wrong thing
+ to do. Why don't we record them even if we do have
+ debug symbol info? What really belongs in the minsyms
+ anyway? Fred!?? */
+ 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, objfile);
+ break;
+ } else {
+ record_minimal_symbol (cs->c_name, cs->c_value,
+ mst_data, objfile);
+ break;
+ }
+ }
+ process_coff_symbol (cs, &main_aux, objfile);
break;
case C_FCN:
- if (strcmp (cs->c_name, ".bf") == 0)
+ if (STREQ (cs->c_name, ".bf"))
{
+ 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, cs->c_symnum);
fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
+
+ /* Might want to check that locals are 0 and
+ context_stack_depth is zero, and complain if not. */
+
+ depth = 0;
+ new = push_context (depth, fcn_start_addr);
+ fcn_cs_saved.c_name = getsymname (&fcn_sym_saved);
+ new->name = process_coff_symbol (&fcn_cs_saved,
+ &fcn_aux_saved, objfile);
}
- else if (strcmp (cs->c_name, ".ef") == 0)
+ else if (STREQ (cs->c_name, ".ef"))
{
- /* value contains address of exit/return from function */
- /* round it up to next multiple of 16 */
- cs->c_value = (cs->c_value + 15) & -16;
+ /* the value of .ef is the address of epilogue code;
+ not useful for gdb. */
/* { main_aux.x_sym.x_misc.x_lnsz.x_lnno
contains number of lines to '}' */
- fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
+ new = pop_context ();
+ /* Stack must be empty now. */
+ if (context_stack_depth > 0 || new == NULL)
+ {
+ complain (&ef_complaint, cs->c_symnum);
+ within_function = 0;
+ break;
+ }
+ if (cs->c_naux != 1)
+ {
+ complain (&ef_no_aux_complaint, 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;
finish_block (new->name, &local_symbols, new->old_blocks,
- new->start_addr, cs->c_value);
- context_stack = 0;
+ 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,
+#endif
+ objfile
+ );
within_function = 0;
- free (new);
}
break;
case C_BLOCK:
- if (strcmp (cs->c_name, ".bb") == 0)
+ if (STREQ (cs->c_name, ".bb"))
{
- new = (struct context_stack *)
- xmalloc (sizeof (struct context_stack));
- depth++;
- new->depth = depth;
- new->next = context_stack;
- context_stack = new;
- new->locals = local_symbols;
- new->old_blocks = pending_blocks;
- new->start_addr = cs->c_value;
- new->name = 0;
- local_symbols = 0;
+ push_context (++depth, cs->c_value);
}
- else if (strcmp (cs->c_name, ".eb") == 0)
+ else if (STREQ (cs->c_name, ".eb"))
{
- new = context_stack;
- if (new == 0 || depth != new->depth)
- error ("Invalid symbol data: .bb/.eb symbol mismatch.");
- if (local_symbols && context_stack->next)
+ new = pop_context ();
+ if (depth-- != new->depth)
+ {
+ complain (&eb_complaint, symnum);
+ break;
+ }
+ if (local_symbols && context_stack_depth > 0)
{
/* Make a block for the local symbols within. */
finish_block (0, &local_symbols, new->old_blocks,
- new->start_addr, cs->c_value);
+ new->start_addr, cs->c_value, objfile);
}
- depth--;
+ /* Now pop locals of block just finished. */
local_symbols = new->locals;
- context_stack = new->next;
- free (new);
}
break;
default:
- (void) process_coff_symbol (cs, &main_aux);
+ process_coff_symbol (cs, &main_aux, objfile);
break;
}
}
if (last_source_file)
- end_symtab ();
- fclose (stream);
+ coff_end_symtab (objfile);
+
+ /* 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);
+
+ 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)
if (myread (chan, (char *)file_hdr, FILHSZ) < 0)
return -1;
- if (BADMAG(file_hdr))
- return -1; /* Non understood file */
- return file_hdr->f_nsyms; /* OK magic number, return # syms */
-}
-
-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++)
+ switch (file_hdr->f_magic)
{
- if (myread (chan, (char *)section_hdr, SCNHSZ) < 0)
+#ifdef MC68MAGIC
+ case MC68MAGIC:
+#endif
+#ifdef NS32GMAGIC
+ case NS32GMAGIC:
+ case NS32SMAGIC:
+#endif
+#ifdef I386MAGIC
+ case I386MAGIC:
+#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:
+#ifdef BADMAG
+ if (BADMAG(file_hdr))
+ return -1;
+ else
+ return file_hdr->f_nsyms;
+#else
return -1;
- if (strncmp (section_hdr->s_name, section_name, 8) == 0)
- return 0;
+#endif
}
- return -1;
}
+#endif
+/* 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,
+ 0, cs->c_naux, (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;
-#ifdef DEBUG
- if (debug) {
- fprintf(stderr, "sym %3x: %2x %s %x %x %x", cs->c_symnum,
- cs->c_sclass, cs->c_name, cs->c_value, cs->c_secnum, cs->c_type);
- if (cs->c_nsyms > 1)
- fprintf(stderr, " +aux %s\n", (char *)aux);
- else
- fprintf(stderr, "\n");
- }
-#endif
-
- 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];
+
+ free_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, we get 0 bytes back from the read. That's OK. */
- if (val == 0) {
- free_stringtab();
+ /* 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 lengthbuf || length < sizeof lengthbuf)
return 0;
- }
-
- if (val != sizeof buffer)
- return -1;
- if (stringtab)
- free (stringtab);
- stringtab = (char *) xmalloc (buffer);
- bcopy (&buffer, stringtab, sizeof buffer);
+ stringtab = (char *) xmalloc (length);
+ 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 lengthbuf, length - sizeof lengthbuf);
+ if (val != length - sizeof lengthbuf || 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)
{
- if (!stringtab)
- error("Symbol entry references nonexistent string table");
- 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;
}
return result;
}
-static char *
-getfilename (aux_entry)
- AUXENT *aux_entry;
+/* Extract the file name from the aux entry of a C_FILE symbol. Return
+ only the last component of the name. Result is in static storage and
+ is only good for temporary use. */
+
+char *
+coff_getfilename (aux_entry)
+ union internal_auxent *aux_entry;
{
static char buffer[BUFSIZ];
register char *temp;
char *result;
- extern char *rindex ();
-#ifndef mac_aux
- if (aux_entry->x_file.x_foff != 0)
- strcpy (buffer, stringtab + aux_entry->x_file.x_foff);
+ if (aux_entry->x_file.x_n.x_zeroes == 0)
+ strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset);
else
-#endif
{
strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN);
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;
+
+ free_linetab();
+
+ 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);
+
return 0;
}
+static void
+free_linetab ()
+{
+ if (linetab)
+ free (linetab);
+ linetab = NULL;
+}
+
+#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];
- register struct lineno *lptr;
+ register char *rawptr;
+ struct internal_lineno lptr;
+
+ if (file_offset < linetab_offset)
+ {
+ complain (&lineno_complaint, 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--;
- for (lptr = (struct lineno *)rawptr;
- lptr->l_lnno && lptr->l_lnno <= last_line;
- rawptr += LINESZ, lptr = (struct lineno *)rawptr)
- {
- 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);
+ TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, 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] &&
+ STREQ (name + 1, SYMBOL_NAME (sym) + 1))
{
- if (name[0] == SYMBOL_NAME (sym)[0] &&
- !strcmp (name + 1, SYMBOL_NAME (sym) + 1))
+ 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];
+ SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
}
else
{
- prev = sym;
- sym = (struct symbol *) SYMBOL_VALUE (sym);
+ opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym);
+ }
+
+ patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym));
+
+ if (prev)
+ {
+ sym = SYMBOL_VALUE_CHAIN (prev);
+ }
+ else
+ {
+ 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 *)
- xmalloc (sizeof (struct symbol));
+ register struct symbol *sym
+ = (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) = savestring (name, strlen (name));
+ name = EXTERNAL_NAME (name, objfile->obfd);
+ 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) = 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);
case C_EXT:
SYMBOL_CLASS (sym) = LOC_STATIC;
+ SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value;
add_symbol_to_list (sym, &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);
}
break;
+#ifdef C_GLBLREG /* AMD coff */
+ case C_GLBLREG:
+#endif
case C_REG:
- case C_REGPARM:
SYMBOL_CLASS (sym) = LOC_REGISTER;
+ SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value);
add_symbol_to_list (sym, &local_symbols);
break;
case C_ARG:
SYMBOL_CLASS (sym) = LOC_ARG;
+#if 0
+ /* FIXME: This has not been tested. */
+ /* Add parameter to function. */
+ add_param_to_type(&in_function_type,sym);
+#endif
add_symbol_to_list (sym, &local_symbols);
+#if !defined (BELIEVE_PCC_PROMOTION) && (TARGET_BYTE_ORDER == BIG_ENDIAN)
/* 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;
+ aligned on an int boundary, realign it to the "little end"
+ of the 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
+ && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype))
+ {
+ SYMBOL_VALUE (sym) += TYPE_LENGTH (temptype)
+ - TYPE_LENGTH (SYMBOL_TYPE (sym));
+ }
+#endif
break;
+ case C_REGPARM:
+ SYMBOL_CLASS (sym) = LOC_REGPARM;
+ SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value);
+ add_symbol_to_list (sym, &local_symbols);
+#if !defined (BELIEVE_PCC_PROMOTION)
+ /* FIXME: This should retain the current type, since it's just
+ a register value. gnu@adobe, 26Feb93 */
+ /* If PCC says a parameter is a short or a char,
+ it is really an 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_TPDEF:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
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);
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)
- TYPE_NAME (SYMBOL_TYPE (sym))
- = concat ("",
- (cs->c_sclass == C_ENTAG
- ? "enum "
- : (cs->c_sclass == C_STRTAG
- ? "struct " : "union ")),
- SYMBOL_NAME (sym));
+
+ /* Some compilers try to be helpful by inventing "fake"
+ names for anonymous enums, structures, and unions, like
+ "~0fake" or ".0fake". Thanks, but no thanks... */
+ if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0)
+ if (SYMBOL_NAME(sym) != NULL
+ && *SYMBOL_NAME(sym) != '~'
+ && *SYMBOL_NAME(sym) != '.')
+ TYPE_TAG_NAME (SYMBOL_TYPE (sym)) =
+ concat (SYMBOL_NAME (sym), NULL);
+
add_symbol_to_list (sym, &file_symbols);
break;
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)
{
int i, n;
register unsigned short *dim;
- struct type *base_type;
+ struct type *base_type, *index_type, *range_type;
/* 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 = *(dim + 1);
*dim = 0;
- type = (struct type *)
- obstack_alloc (symbol_obstack, sizeof (struct type));
- bzero (type, sizeof (struct type));
-
base_type = decode_type (cs, new_c_type, aux);
-
- TYPE_CODE (type) = TYPE_CODE_ARRAY;
- TYPE_TARGET_TYPE (type) = base_type;
- TYPE_LENGTH (type) = n * TYPE_LENGTH (base_type);
+ index_type = lookup_fundamental_type (current_objfile, FT_INTEGER);
+ range_type =
+ create_range_type ((struct type *) NULL, index_type, 0, n - 1);
+ type =
+ create_array_type ((struct type *) NULL, base_type, range_type);
}
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. SCO 3.2v4 cc gets confused
+ with pointers to pointers to defined structs, and generates
+ negative x_tagndx fields. */
+ 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
+ && aux->x_sym.x_tagndx.l >= 0)
+ {
+ 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;
switch (c_type)
{
case T_NULL:
- /* NULL seems to be used as the basic type of void functions */
- return builtin_type_void;
- break;
+ /* shows up with "void (*foo)();" structure members */
+ 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) = NULL;
+ /* This used to set the tag to "<opaque>". But I think setting it
+ to NULL is right, and the printing code can print it as
+ "struct {...}". */
+ TYPE_TAG_NAME (type) = 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) = NULL;
+ /* This used to set the tag to "<opaque>". But I think setting it
+ to NULL is right, and the printing code can print it as
+ "union {...}". */
+ TYPE_TAG_NAME (type) = 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);
}
TYPE_CODE (type) = TYPE_CODE_UNION;
return type;
case T_ENUM:
- return read_enum_type (cs->c_symnum,
- aux->x_sym.x_misc.x_lnsz.x_size,
- aux->x_sym.x_fcnary.x_fcn.x_endndx);
+ if (cs->c_naux != 1)
+ {
+ /* anonymous enum type */
+ type = coff_alloc_type (cs->c_symnum);
+ TYPE_CODE (type) = TYPE_CODE_ENUM;
+ TYPE_NAME (type) = NULL;
+ /* This used to set the tag to "<opaque>". But I think setting it
+ to NULL is right, and the printing code can print it as
+ "enum {...}". */
+ TYPE_TAG_NAME (type) = NULL;
+ TYPE_LENGTH (type) = 0;
+ TYPE_FIELDS (type) = 0;
+ TYPE_NFIELDS(type) = 0;
+ }
+ else
+ {
+ type = 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.l);
+ }
+ return type;
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, name %s\n", c_type, cs->c_symnum,
- cs->c_name);
- 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;
int nfields = 0;
register int n;
char *name;
-#ifdef NAMES_HAVE_UNDERSCORE
- int offset = 1;
-#else
- int offset = 0;
-#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 (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;
- name = (name[0] == '_' ? name + offset : name);
+ name = EXTERNAL_NAME (name, current_objfile->obfd);
switch (ms->c_sclass)
{
break;
case C_EOS:
+ done = 1;
break;
}
}
TYPE_NFIELDS (type) = nfields;
TYPE_FIELDS (type) = (struct field *)
- obstack_alloc (symbol_obstack, sizeof (struct field) * nfields);
+ TYPE_ALLOC (type, sizeof (struct field) * nfields);
/* Copy the saved-up fields into the field vector. */
and create and return a suitable type object.
Also defines the symbols that represent the values of the type. */
+/* 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;
+ int done = 0;
struct pending **symlist;
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;
struct pending *osyms, *syms;
+ int o_nsyms;
register int n;
char *name;
-#ifdef NAMES_HAVE_UNDERSCORE
- int offset = 1;
-#else
- int offset = 0;
-#endif
type = coff_alloc_type (index);
if (within_function)
else
symlist = &file_symbols;
osyms = *symlist;
+ o_nsyms = osyms ? osyms->nsyms : 0;
- 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;
- name = (name[0] == '_' ? name + offset : name);
+ name = EXTERNAL_NAME (name, current_objfile->obfd);
switch (ms->c_sclass)
{
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;
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);
+ if (length > 0)
+ TYPE_LENGTH (type) = length;
+ else
+ TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */
TYPE_CODE (type) = TYPE_CODE_ENUM;
TYPE_NFIELDS (type) = nsyms;
TYPE_FIELDS (type) = (struct field *)
- obstack_alloc (symbol_obstack, sizeof (struct field) * nsyms);
+ TYPE_ALLOC (type, 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
to cause them to be defined. osyms contains the old value
of that symlist; everything up to there was defined by us. */
+ /* Note that we preserve the order of the enum constants, so
+ that in something like "enum {FOO, LAST_THING=FOO}" we print
+ FOO, not LAST_THING. */
- for (syms = *symlist, n = nsyms; syms != osyms; syms = syms->next)
+ for (syms = *symlist, n = 0; syms; syms = syms->next)
{
- SYMBOL_TYPE (syms->symbol) = type;
- TYPE_FIELD_NAME (type, --n) = SYMBOL_NAME (syms->symbol);
- TYPE_FIELD_VALUE (type, n) = SYMBOL_VALUE (syms->symbol);
- TYPE_FIELD_BITPOS (type, n) = 0;
- TYPE_FIELD_BITSIZE (type, n) = 0;
+ int j = 0;
+ if (syms == osyms)
+ j = o_nsyms;
+ for (; j < syms->nsyms; j++,n++)
+ {
+ struct symbol *xsym = syms->symbol[j];
+ SYMBOL_TYPE (xsym) = type;
+ TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym);
+ TYPE_FIELD_VALUE (type, n) = 0;
+ TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
+ TYPE_FIELD_BITSIZE (type, n) = 0;
+ }
+ if (syms == osyms)
+ break;
}
+
+#if 0
+ /* This screws up perfectly good C programs with enums. FIXME. */
+ /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
+ if(TYPE_NFIELDS(type) == 2 &&
+ ((STREQ(TYPE_FIELD_NAME(type,0),"TRUE") &&
+ STREQ(TYPE_FIELD_NAME(type,1),"FALSE")) ||
+ (STREQ(TYPE_FIELD_NAME(type,1),"TRUE") &&
+ STREQ(TYPE_FIELD_NAME(type,0),"FALSE"))))
+ TYPE_CODE(type) = TYPE_CODE_BOOL;
+#endif
return type;
}
-static
-initialize ()
+struct section_offsets *
+coff_symfile_offsets (objfile, addr)
+ struct objfile *objfile;
+ CORE_ADDR addr;
{
- symfile = 0;
+ struct section_offsets *section_offsets;
+ int i;
- add_com ("symbol-file", class_files, symbol_file_command,
- "Load symbol table (in coff format) from executable file FILE.");
+ objfile->num_sections = SECT_OFF_MAX;
+ section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile -> psymbol_obstack,
+ sizeof (struct section_offsets)
+ + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1));
+
+ for (i = 0; i < SECT_OFF_MAX; i++)
+ ANOFFSET (section_offsets, i) = addr;
+
+ return section_offsets;
}
-END_FILE
+/* Register our ability to parse symbols for coff BFD files */
-#endif /* COFF_FORMAT */
+static struct sym_fns coff_sym_fns =
+{
+ bfd_target_coff_flavour,
+ 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 */
+ coff_symfile_offsets, /* sym_offsets: xlate external to internal form */
+ NULL /* next: pointer to next struct sym_fns */
+};
+void
+_initialize_coffread ()
+{
+ add_symtab_fns(&coff_sym_fns);
+}
projects / deliverable / binutils-gdb.git / blobdiff