/* 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) 1987-1991 Free Software Foundation, Inc.
+ Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
+ Free Software Foundation, Inc.
+ Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu).
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. */
-\f
-#include <stdio.h>
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
#include "defs.h"
-#include "param.h"
#include "symtab.h"
+#include "gdbtypes.h"
#include "breakpoint.h"
-#include "bfd.h"
-#include "libcoff.h" /* FIXME secret internal data from BFD */
-#include "symfile.h"
-#include <intel-coff.h>
+#include "bfd.h"
#include <obstack.h>
-#include <string.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 ();
-static void read_one_sym ();
-
-extern int fclose ();
-extern void free_all_symtabs ();
-extern void free_all_psymtabs ();
-
-/* external routines from the BFD library -- undocumented interface used
- by GDB to read symbols. Move to libcoff.h. FIXME-SOMEDAY! */
-extern void bfd_coff_swap_sym (/* symfile_bfd, &sym */);
-extern void bfd_coff_swap_aux (/* symfile_bfd, &aux, type, sclass */);
-extern void bfd_coff_swap_lineno (/* symfile_bfd, &lineno */);
-
-
-/* Name of source file whose symbol data we are now processing.
- This comes from a symbol named ".file". */
-
-static char *last_source_file;
-
-/* Core address of start and end of text of current source file.
- This comes from a ".text" symbol where x_nlinno > 0. */
-
-static CORE_ADDR cur_src_start_addr;
-static CORE_ADDR cur_src_end_addr;
+#include <string.h>
-/* Core address of the end of the first object file. */
-static CORE_ADDR first_object_file_end;
+#include "coff/internal.h" /* Internal format of COFF symbols in BFD */
+#include "libcoff.h" /* FIXME secret internal data from BFD */
-/* End of the text segment of the executable file,
- as found in the symbol _etext. */
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include "gdb-stabs.h"
+#include "stabsread.h"
+#include "complaints.h"
+#include "target.h"
-static CORE_ADDR end_of_text_addr;
+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 */
-/* The addresses of the symbol table stream and number of symbols
- of the object file we are reading (as copied into core). */
+ asection *stabsect; /* Section pointer for .stab section */
+ asection *stabstrsect; /* Section pointer for .stab section */
+ asection *stabindexsect; /* Section pointer for .stab.index section */
+ char *stabstrdata;
+};
-static FILE *nlist_stream_global;
-static int nlist_nsyms_global;
+/* 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)
-/* The entry point (starting address) of the file, if it is an executable. */
+/* 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. */
-static CORE_ADDR entry_point;
+#define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK))
-/* The index in the symbol table of the last coff symbol that was processed. */
+/* 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. */
-static int symnum;
+#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 current_source_start_addr;
+static CORE_ADDR current_source_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 bfd *nlist_bfd_global;
+static int nlist_nsyms_global;
/* Vector of line number information. */
static int line_vector_length;
-#ifdef TDESC
-#define SEM
-int int_sem_val = 's' << 24 | 'e' << 16 | 'm' << 8 | '.';
-int temp_sem_val;
-int last_coffsem = 2;
-int last_coffsyn = 0;
-int debug_info = 0; /*used by tdesc */
-extern int tdesc_handle;
-extern int safe_to_init_tdesc_context;
-#endif
+/* 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 include/coff/internal.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_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. */
+/* Complaints about various problems in the file being read */
-struct pending *file_symbols; /* static at top level, and types */
+struct complaint ef_complaint =
+ {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0};
-struct pending *global_symbols; /* global functions and variables */
+struct complaint bf_no_aux_complaint =
+ {"`.bf' symbol %d has no aux entry", 0, 0};
-struct pending *local_symbols; /* everything local to lexical context */
+struct complaint ef_no_aux_complaint =
+ {"`.ef' symbol %d has no aux entry", 0, 0};
-/* List of unclosed lexical contexts
- (that will become blocks, eventually). */
+struct complaint lineno_complaint =
+ {"Line number pointer %d lower than start of line numbers", 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 unexpected_type_complaint =
+ {"Unexpected type for symbol %s", 0, 0};
-struct context_stack *context_stack;
+struct complaint bad_sclass_complaint =
+ {"Bad n_sclass for symbol %s", 0, 0};
-/* Nonzero if within a function (so symbols should be local,
- if nothing says specifically). */
+struct complaint misordered_blocks_complaint =
+ {"Blocks out of order at address %x", 0, 0};
-int within_function;
+struct complaint tagndx_bad_complaint =
+ {"Symbol table entry for %s has bad tagndx value", 0, 0};
-/* List of blocks already made (lexical contexts already closed).
- This is used at the end to make the blockvector. */
+struct complaint eb_complaint =
+ {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0};
-struct pending_block
-{
- struct pending_block *next;
- struct block *block;
+/* 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 startup_file_start; /* From blockframe.c */
-extern CORE_ADDR startup_file_end; /* From blockframe.c */
+static struct type *decode_base_type PARAMS ((struct coff_symbol *,
+ unsigned int,
+ union internal_auxent *));
-/* Complaints about various problems in the file being read */
+static struct type *decode_type PARAMS ((struct coff_symbol *, unsigned int,
+ union internal_auxent *));
-struct complaint ef_complaint =
- {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0};
+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 symbol *process_coff_symbol PARAMS ((struct coff_symbol *,
+ union internal_auxent *,
+ struct section_offsets *,
+ 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, struct section_offsets *));
+
+static void free_linetab PARAMS ((void));
+
+static int init_lineno PARAMS ((bfd *, long, int));
+
+static char *getsymname PARAMS ((struct internal_syment *));
+
+static void free_stringtab PARAMS ((void));
+
+static int init_stringtab PARAMS ((bfd *, long));
+
+static void read_one_sym PARAMS ((struct coff_symbol *,
+ struct internal_syment *,
+ union internal_auxent *));
+
+static void coff_symtab_read PARAMS ((long, int, struct section_offsets *,
+ 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 *,
+ struct section_offsets *, int));
+
+static void coff_symfile_finish PARAMS ((struct objfile *));
+
+static void record_minimal_symbol PARAMS ((char *, CORE_ADDR,
+ enum minimal_symbol_type,
+ struct objfile *));
+
+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 struct type *coff_alloc_type PARAMS ((int));
+
+static struct type **coff_lookup_type PARAMS ((int));
+
+static void coff_locate_sections PARAMS ((bfd *, asection *, PTR));
\f
+/* 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). */
+
+static void
+coff_locate_sections (ignore_abfd, sectp, csip)
+ bfd *ignore_abfd;
+ asection *sectp;
+ PTR csip;
+{
+ register struct coff_symfile_info *csi;
+
+ csi = (struct coff_symfile_info *) csip;
+ if (STREQ (sectp->name, ".stab"))
+ {
+ csi->stabsect = sectp;
+ }
+ else if (STREQ (sectp->name, ".stabstr"))
+ {
+ csi->stabstrsect = sectp;
+ }
+ else if (STREQ (sectp->name, ".stab.index"))
+ {
+ csi->stabindexsect = sectp;
+ }
+}
+
+/* Return the section_offsets* that CS points to. */
+static int cs_to_section PARAMS ((struct coff_symbol *, struct objfile *));
+
+struct find_targ_sec_arg {
+ int targ_index;
+ int *resultp;
+};
+
+static void find_targ_sec PARAMS ((bfd *, asection *, void *));
+
+static void find_targ_sec (abfd, sect, obj)
+ bfd *abfd;
+ asection *sect;
+ PTR obj;
+{
+ struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj;
+ if (sect->target_index == args->targ_index)
+ {
+ /* This is the section. Figure out what SECT_OFF_* code it is. */
+ if (bfd_get_section_flags (abfd, sect) & SEC_CODE)
+ *args->resultp = SECT_OFF_TEXT;
+ else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD)
+ *args->resultp = SECT_OFF_DATA;
+ else
+ *args->resultp = SECT_OFF_BSS;
+ }
+}
+
+/* Return the section number (SECT_OFF_*) that CS points to. */
+static int
+cs_to_section (cs, objfile)
+ struct coff_symbol *cs;
+ struct objfile *objfile;
+{
+ int off = SECT_OFF_TEXT;
+ struct find_targ_sec_arg args;
+ args.targ_index = cs->c_secnum;
+ args.resultp = &off;
+ bfd_map_over_sections (objfile->obfd, find_targ_sec, &args);
+ return off;
+}
+
/* 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.
int old_vector_length = type_vector_length;
type_vector_length *= 2;
- if (type_vector_length < index) {
+ if (index /* is still */ >= type_vector_length)
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;
}
\f
-/* maintain the lists of symbols and blocks */
+/* Record a line number entry for line LINE at address PC.
+ FIXME: Use record_line instead. */
-/* 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));
-
- link->next = *listhead;
- link->symbol = symbol;
- *listhead = link;
-}
-
-/* Take one of the lists of symbols and make a block from it.
- Put the block on the list of pending blocks. */
-
-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;
-
- /* Count the length of the list of symbols. */
-
- 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 *));
-
- /* Copy the symbols into the block. */
-
- BLOCK_NSYMS (block) = i;
- for (next = *listhead; next; next = next->next)
- BLOCK_SYM (block, --i) = next->symbol;
-
- BLOCK_START (block) = start;
- BLOCK_END (block) = end;
- BLOCK_SUPERBLOCK (block) = 0; /* Filled in when containing block is made */
-
- /* Put the block in as the value of the symbol that names it. */
-
- if (symbol)
- {
- SYMBOL_BLOCK_VALUE (symbol) = block;
- BLOCK_FUNCTION (block) = symbol;
- }
- else
- BLOCK_FUNCTION (block) = 0;
-
- /* Now free the links of the list, and empty the list. */
-
- for (next = *listhead; next; next = next1)
- {
- next1 = next->next;
- free (next);
- }
- *listhead = 0;
-
- /* Install this block as the superblock
- of all blocks made since the start of this scope
- that don't have superblocks yet. */
-
- 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;
- }
-
- /* 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. */
-
- pblock = (struct pending_block *) xmalloc (sizeof (struct pending_block));
- pblock->block = block;
- if (opblock)
- {
- pblock->next = opblock->next;
- opblock->next = pblock;
- }
- else
- {
- pblock->next = pending_blocks;
- pending_blocks = pblock;
- }
-}
-
-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. */
-
- 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 *));
-
- /* 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. */
-
- BLOCKVECTOR_NBLOCKS (blockvector) = i;
- for (next = pending_blocks; next; next = next->next)
- BLOCKVECTOR_BLOCK (blockvector, --i) = next->block;
-
- /* Now free the links of the list, and empty the list. */
-
- for (next = pending_blocks; next; next = next1)
- {
- next1 = next->next;
- free (next);
- }
- pending_blocks = 0;
-
- return blockvector;
-}
-
-/* Manage the vector of line numbers. */
-
-static
-record_line (line, pc)
+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;
- within_function = 0;
- last_source_file = 0;
-#ifdef TDESC
- last_coffsem = 2;
- last_coffsyn = 0;
-#endif
-
- /* 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 we put it in
+ subfiles->name, which end_symtab frees; that's why
+ it must be malloc'd. */
+ 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 */
CORE_ADDR start_addr;
unsigned int size;
{
+ if (last_source_file != NULL)
+ free (last_source_file);
last_source_file = savestring (name, strlen (name));
- cur_src_start_addr = start_addr;
- cur_src_end_addr = start_addr + size;
+ current_source_start_addr = start_addr;
+ current_source_end_addr = start_addr + size;
- if (entry_point < cur_src_end_addr
- && entry_point >= cur_src_start_addr)
+ if (current_objfile -> ei.entry_point >= current_source_start_addr &&
+ current_objfile -> ei.entry_point < current_source_end_addr)
{
- startup_file_start = cur_src_start_addr;
- startup_file_end = cur_src_end_addr;
+ current_objfile -> ei.entry_file_lowpc = current_source_start_addr;
+ current_objfile -> ei.entry_file_highpc = current_source_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 blockvector *blockvector;
- register struct linetable *lv;
+ struct symtab *symtab;
- /* Finish the lexical context of the last function in the file. */
+ last_source_start_addr = current_source_start_addr;
- if (context_stack)
- {
- cstk = context_stack;
- 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);
- }
+ /* 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;
- /* Ignore a file that has no functions with real debugging info. */
- if (pending_blocks == 0 && file_symbols == 0 && global_symbols == 0)
- {
- free (line_vector);
- line_vector = 0;
- line_vector_length = -1;
- last_source_file = 0;
- return;
- }
+ /* 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;
- /* 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);
-
- /* Create the blockvector that points to all the file's blocks. */
- blockvector = make_blockvector ();
-
- /* Now create the symtab object for this source file. */
- symtab = (struct symtab *) xmalloc (sizeof (struct symtab));
- symtab->free_ptr = 0;
-
- /* Fill in its components. */
- symtab->blockvector = blockvector;
- symtab->free_code = free_linetable;
- 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 (struct linetable_entry)));
- symtab->nlines = 0;
- symtab->line_charpos = 0;
-
-#ifdef TDESC
- symtab->coffsem = last_coffsem;
- symtab->coffsyn = last_coffsyn;
-#endif
+ /* sort_pending is needed for amdcoff, at least.
+ sort_linevec is needed for the SCO compiler. */
+ symtab = end_symtab (current_source_end_addr, 1, 1, objfile, 0);
- /* Link the new symtab into the list of such. */
- symtab->next = symtab_list;
- symtab_list = symtab;
+ 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
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;
{
-#ifdef TDESC
- /* We don't want TDESC entry points on the misc_function_vector */
+ /* We don't want TDESC entry points in the minimal symbol table */
if (name[0] == '@') return;
-#endif
- /* mf_text isn't true, but apparently COFF doesn't tell us what it really
- is, so this guess is more useful than mf_unknown. */
- prim_record_misc_function (savestring (name, strlen (name)),
- address,
- (int)mf_text);
+
+ prim_record_minimal_symbol
+ (obsavestring (name, strlen (name), &objfile->symbol_obstack),
+ address, type,
+ objfile);
}
\f
/* coff_symfile_init ()
is the coff-specific initialization routine for reading symbols.
- It is passed a struct sym_fns which contains, among other things,
+ 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 ().
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 */
-};
-
-void
-coff_symfile_init (sf)
- struct sym_fns *sf;
+static void
+coff_symfile_init (objfile)
+ struct objfile *objfile;
{
- bfd *abfd = sf->sym_bfd;
+ bfd *abfd = objfile->obfd;
+
+ /* Allocate struct to keep track of stab reading. */
+ objfile->sym_stab_info = (PTR)
+ xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info));
+
+ memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
/* Allocate struct to keep track of the symfile */
- /* FIXME memory leak */
- sf->sym_private = xmalloc (sizeof (struct coff_symfile_info));
+ objfile -> sym_private = xmmalloc (objfile -> md,
+ sizeof (struct coff_symfile_info));
-#if defined (TDESC)
- safe_to_init_tdesc_context = 0;
-#endif
+ memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info));
- /* Save startup file's range of PC addresses to help blockframe.c
- decide where the bottom of the stack is. */
- if (bfd_get_file_flags (abfd) & EXEC_P)
- {
- /* Executable file -- record its entry point so we'll recognize
- the startup file because it contains the entry point. */
- entry_point = bfd_get_start_address (abfd);
- }
- else
- {
- /* Examination of non-executable.o files. Short-circuit this stuff. */
- /* ~0 will not be in any file, we hope. */
- entry_point = ~0;
- /* set the startup file to be an empty range. */
- startup_file_start = 0;
- startup_file_end = 0;
- }
+ init_entry_point_info (objfile);
}
/* 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
find_linenos (abfd, asect, vpinfo)
bfd *abfd;
sec_ptr asect;
- void *vpinfo;
+ PTR vpinfo;
{
struct coff_symfile_info *info;
int size, count;
if (count == 0)
return;
- size = count * sizeof (struct lineno);
+ size = count * local_linesz;
info = (struct coff_symfile_info *)vpinfo;
/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
}
+/* The BFD for this file -- only good while we're actively reading
+ symbols into a psymtab or a symtab. */
+
+static bfd *symfile_bfd;
+
/* 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
-coff_symfile_read (sf, addr, mainline)
- struct sym_fns *sf;
- CORE_ADDR addr;
+/* 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 coff_symfile_info *)sf->sym_private;
- bfd *abfd = sf->sym_bfd;
+ 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 ((FILE *)(abfd->iostream)); /* File descriptor */
num_symbols = bfd_get_symcount (abfd); /* How many syms */
- symtab_offset = obj_sym_filepos (abfd); /* Symbol table file offset */
- stringtab_offset = symtab_offset + num_symbols * SYMESZ; /* String tab */
+ 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 */
-#ifdef TDESC
- debug_info = text_hdr.s_relptr;
- if (tdesc_handle)
- {
- dc_terminate (tdesc_handle);
- tdesc_handle = 0;
- }
-#endif
-
/* Read the line number table, all at once. */
info->min_lineno_offset = 0;
info->max_lineno_offset = 0;
- bfd_map_over_sections (abfd, find_linenos, info);
+ bfd_map_over_sections (abfd, find_linenos, (PTR) info);
- val = init_lineno (desc, info->min_lineno_offset,
+ make_cleanup (free_linetab, 0);
+ val = init_lineno (abfd, 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, stringtab_offset);
- if (val < 0)
- {
- free_all_symtabs (); /* FIXME blows whole symtab */
- printf ("\"%s\": can't get string table", name);
- fflush (stdout);
- return;
- }
make_cleanup (free_stringtab, 0);
-
- /* Position to read the symbol table. Do not read it all at once. */
- val = lseek (desc, (long)symtab_offset, 0);
+ val = init_stringtab (abfd, stringtab_offset);
if (val < 0)
- perror_with_name (name);
+ error ("\"%s\": can't get string table", name);
- init_misc_bunches ();
- 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 ();
+ coff_symtab_read ((long) symtab_offset, num_symbols, section_offsets,
+ objfile);
/* Sort symbols alphabetically within each block. */
- sort_all_symtab_syms ();
+ {
+ struct symtab *s;
- /* Go over the misc symbol bunches and install them in vector. */
+ for (s = objfile -> symtabs; s != NULL; s = s -> next)
+ sort_symtab_syms (s);
+ }
- condense_misc_bunches (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 (0); /* FIXME, this might be too slow, see dbxread */
+ bfd_map_over_sections (abfd, coff_locate_sections, (PTR) info);
+
+ if (info->stabsect)
+ {
+ /* FIXME: dubious. Why can't we use something normal like
+ bfd_get_section_contents? */
+ bfd_seek (abfd, 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 (back_to);
}
-void
-coff_symfile_discard ()
+static void
+coff_new_init (ignore)
+ struct objfile *ignore;
{
- /* There seems to be nothing to do here. */
}
-void
-coff_new_init ()
+/* Perform any local cleanups required when we are done with a particular
+ objfile. I.E, we are in the process of discarding all symbol information
+ for an objfile, freeing up all memory held for it, and unlinking the
+ objfile struct from the global list of known objfiles. */
+
+static void
+coff_symfile_finish (objfile)
+ struct objfile *objfile;
{
- /* There seems to be nothing to do except free_all_symtabs and set
- symfile to zero, which is done by our caller. */
+ 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, etc */
- 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;
+coff_symtab_read (symtab_offset, nsyms, section_offsets, objfile)
+ long symtab_offset;
int nsyms;
+ struct section_offsets *section_offsets;
+ struct objfile *objfile;
{
- int newfd; /* Avoid multiple closes on same desc */
- 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 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;
-
/* Name of the current file. */
char *filestring = "";
- int depth;
- int fcn_first_line;
- int fcn_last_line;
- int fcn_start_addr;
- long fcn_line_ptr;
- struct cleanup *old_chain;
-
-
- newfd = dup (desc);
- if (newfd == -1)
- fatal ("Too many open files");
- stream = fdopen (newfd, "r");
-
- old_chain = make_cleanup (free_all_symtabs, 0);
- make_cleanup (fclose, stream);
- nlist_stream_global = stream;
+ 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;
+ CORE_ADDR tmpaddr;
+
+ /* 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 (former) rewind().
+
+ FIXME: Find out if this has been reported to Sun, whether it has
+ been fixed in a later release, etc. */
+
+ bfd_seek (objfile->obfd, 0, 0);
+
+ /* Position to read the symbol table. */
+ val = bfd_seek (objfile->obfd, (long) symtab_offset, 0);
+ if (val < 0)
+ perror_with_name (objfile->name);
+
+ current_objfile = objfile;
+ nlist_bfd_global = objfile->obfd;
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);
#ifdef SEM
if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE)
{
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 */
}
/* 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,
- * then we undo this step
- */
- record_misc_function (cs->c_name, cs->c_value);
+ /* Record all functions -- external and static -- in minsyms. */
+ tmpaddr = cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT);
+ record_minimal_symbol (cs->c_name, tmpaddr, mst_text, objfile);
fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr;
- fcn_start_addr = cs->c_value;
+ fcn_start_addr = tmpaddr;
fcn_cs_saved = *cs;
fcn_sym_saved = main_sym;
fcn_aux_saved = main_aux;
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:
- /*
- * c_value field contains symnum of next .file entry in table
- * or symnum of first global after last .file.
- */
+ /* c_value field contains symnum of next .file entry in table
+ or symnum of first global after last .file. */
next_file_symnum = cs->c_value;
- filestring = getfilename (&main_aux);
- /*
- * Complete symbol table for last object file
- * containing debugging information.
- */
+ 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 ();
}
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) {
- /* last address of startup file */
- first_object_file_end = 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 (cs->c_type == T_NULL
+ 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 + ANOFFSET (section_offsets, SECT_OFF_TEXT),
+ 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
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);
- break;
- } else {
- cs->c_type = T_INT;
+ {
+ /* Record it in the minimal symbols regardless of
+ SDB_TYPE. This parallels what we do for other debug
+ formats, and probably is needed to make
+ print_address_symbolic work right without the (now
+ gone) "set fast-symbolic-addr off" kludge. */
+
+ /* FIXME: should use mst_abs, and not relocate, if absolute. */
+ enum minimal_symbol_type ms_type;
+ int sec;
+
+ if (cs->c_secnum == N_UNDEF)
+ {
+ /* This is a common symbol. See if the target
+ environment knows where it has been relocated to. */
+ CORE_ADDR reladdr;
+ if (target_lookup_symbol (cs->c_name, &reladdr))
+ {
+ /* Error in lookup; ignore symbol. */
+ break;
}
+ tmpaddr = reladdr;
+ /* The address has already been relocated; make sure that
+ objfile_relocate doesn't relocate it again. */
+ sec = -2;
+ ms_type = cs->c_sclass == C_STAT ? mst_file_bss : mst_bss;
+ }
+ else
+ {
+ sec = cs_to_section (cs, objfile);
+ tmpaddr = cs->c_value;
+ if (cs->c_sclass != C_STAT)
+ tmpaddr += ANOFFSET (section_offsets, sec);
+
+ switch (sec)
+ {
+ case SECT_OFF_TEXT:
+ case SECT_OFF_RODATA:
+ ms_type =
+ cs->c_sclass == C_STAT ? mst_file_text : mst_text;
+ break;
+ case SECT_OFF_DATA:
+ ms_type =
+ cs->c_sclass == C_STAT ? mst_file_data : mst_data;
+ break;
+ case SECT_OFF_BSS:
+ ms_type =
+ cs->c_sclass == C_STAT ? mst_file_bss : mst_bss;
+ break;
+ default:
+ ms_type = mst_unknown;
+ break;
+ }
+ }
+
+ if (cs->c_name[0] != '@' /* Skip tdesc symbols */)
+ prim_record_minimal_symbol_and_info
+ (obsavestring (cs->c_name, strlen (cs->c_name),
+ &objfile->symbol_obstack),
+ tmpaddr,
+ ms_type,
+ NULL,
+ sec,
+ objfile);
+
+ if (SDB_TYPE (cs->c_type))
+ {
+ struct symbol *sym;
+ sym = process_coff_symbol
+ (cs, &main_aux, section_offsets, objfile);
+ SYMBOL_VALUE (sym) = tmpaddr;
+ SYMBOL_SECTION (sym) = sec;
+ }
}
- (void) process_coff_symbol (cs, &main_aux);
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;
- 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 = fcn_start_addr;
+ /* 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);
+ new->name =
+ process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved,
+ section_offsets, objfile);
}
- else if (strcmp (cs->c_name, ".ef") == 0)
+ else if (STREQ (cs->c_name, ".ef"))
{
- /* the value of .ef is the address of epilogue code;
- * not useful for gdb
- */
+ /* 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 '}' */
- new = context_stack;
- if (new == 0)
+ 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;
}
- fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
- enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line);
+ 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,
+ section_offsets);
finish_block (new->name, &local_symbols, new->old_blocks,
new->start_addr,
So use the .bf record information that
points to the epilogue and add the size
of the epilogue. */
- cs->c_value + FUNCTION_EPILOGUE_SIZE
+ cs->c_value
+ + FUNCTION_EPILOGUE_SIZE
+ + ANOFFSET (section_offsets, SECT_OFF_TEXT),
#else
- fcn_cs_saved.c_value +
- fcn_aux_saved.x_sym.x_misc.x_fsize
+ fcn_cs_saved.c_value
+ + fcn_aux_saved.x_sym.x_misc.x_fsize
+ + ANOFFSET (section_offsets, SECT_OFF_TEXT),
#endif
+ objfile
);
- context_stack = 0;
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;
+ tmpaddr = cs->c_value;
+ tmpaddr += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+ push_context (++depth, tmpaddr);
}
- 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 at symbol %d.",
- symnum);
- 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)
{
+ tmpaddr =
+ cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT);
/* 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, tmpaddr, objfile);
}
- depth--;
+ /* Now pop locals of block just finished. */
local_symbols = new->locals;
- context_stack = new->next;
- free (new);
}
break;
-#ifdef TDESC
- case C_VERSION:
- if (strcmp (cs->c_name, ".coffsyn") == 0)
- last_coffsyn = cs->c_value;
- else if ((strcmp (cs->c_name, ".coffsem") == 0) &&
- (cs->c_value != 0))
- last_coffsem = cs->c_value;
- break;
-#endif
default:
-#ifdef TDESC
- if ((strcmp (cs->c_name, ".coffsem") == 0) &&
- (cs->c_value != 0))
- last_coffsem = cs->c_value;
- else
-#endif
- (void) process_coff_symbol (cs, &main_aux);
+ process_coff_symbol (cs, &main_aux, section_offsets, objfile);
break;
}
}
if (last_source_file)
- end_symtab ();
- fclose (stream);
- discard_cleanups (old_chain);
-}
-\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)
- int chan;
- FILHDR *file_hdr;
-{
- lseek (chan, 0L, 0);
- if (myread (chan, (char *)file_hdr, FILHSZ) < 0)
- return -1;
+ coff_end_symtab (objfile);
- switch (file_hdr->f_magic)
- {
-#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;
+ /* 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);
- default:
-#ifdef BADMAG
- if (BADMAG(file_hdr))
- return -1;
- else
- return file_hdr->f_nsyms;
-#else
- return -1;
-#endif
- }
+ current_objfile = NULL;
}
-#endif
+\f
+/* Routines for reading headers and symbols from executable. */
+/* 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;
{
- AUXENT temp_aux;
int i;
cs->c_symnum = symnum;
- fread ((char *)sym, SYMESZ, 1, nlist_stream_global);
- bfd_coff_swap_sym (symfile_bfd, sym);
- cs->c_nsyms = (sym->n_numaux & 0xff) + 1;
- if (cs->c_nsyms >= 2)
+ bfd_read (temp_sym, local_symesz, 1, nlist_bfd_global);
+ bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym);
+ cs->c_naux = sym->n_numaux & 0xff;
+ if (cs->c_naux >= 1)
{
- fread ((char *)aux, AUXESZ, 1, nlist_stream_global);
- bfd_coff_swap_aux (symfile_bfd, aux, sym->n_type, sym->n_sclass);
+ bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_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 = 2; i < cs->c_nsyms; i++)
- fread ((char *)&temp_aux, AUXESZ, 1, nlist_stream_global);
+ for (i = 1; i < cs->c_naux; i++)
+ bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_global);
}
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 */
static char *stringtab = NULL;
static int
-init_stringtab (chan, offset)
- int chan;
+init_stringtab (abfd, offset)
+ bfd *abfd;
long offset;
{
long length;
int val;
unsigned char lengthbuf[4];
- if (stringtab)
- {
- free (stringtab);
- stringtab = NULL;
- }
+ free_stringtab ();
+
+ /* If the file is stripped, the offset might be zero, indicating no
+ string table. Just return with `stringtab' set to null. */
+ if (offset == 0)
+ return 0;
- if (lseek (chan, offset, 0) < 0)
+ if (bfd_seek (abfd, offset, 0) < 0)
return -1;
- val = myread (chan, (char *)lengthbuf, sizeof lengthbuf);
- length = bfd_h_getlong (symfile_bfd, lengthbuf);
+ val = bfd_read ((char *)lengthbuf, sizeof lengthbuf, 1, abfd);
+ 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 length || length < sizeof length)
+ if (val != sizeof lengthbuf || length < sizeof lengthbuf)
return 0;
stringtab = (char *) xmalloc (length);
- if (stringtab == NULL)
- return -1;
-
- bcopy (&length, stringtab, sizeof length);
+ /* This is in target format (probably not very useful, and not currently
+ used), not host format. */
+ memcpy (stringtab, lengthbuf, sizeof lengthbuf);
if (length == sizeof length) /* Empty table -- just the count */
return 0;
- val = myread (chan, stringtab + sizeof length, length - sizeof length);
- if (val != length - sizeof length || stringtab[length - 1] != '\0')
+ val = bfd_read (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, 1, abfd);
+ 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)
{
- result = stringtab + symbol_entry->n_offset;
+ /* FIXME: Probably should be detecting corrupt symbol files by
+ seeing whether offset points to within the stringtab. */
+ 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 COFF_NO_LONG_FILE_NAMES
if (aux_entry->x_file.x_n.x_zeroes == 0)
strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset);
else
-#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)
+
+ /* FIXME: We should not be throwing away the information about what
+ directory. It should go into dirname of the symtab, or some such
+ place. */
+ if ((temp = strrchr (result, '/')) != NULL)
result = temp + 1;
return (result);
}
\f
-/* Support for line number handling */
+/* Support for line number handling. */
+
static char *linetab = NULL;
static long linetab_offset;
static unsigned long linetab_size;
-/* Read in all the line numbers for fast lookups later. */
+/* 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, size)
- int chan;
+init_lineno (abfd, offset, size)
+ bfd *abfd;
long offset;
int size;
{
int val;
- register char *p, *q;
- if (lseek (chan, offset, 0) < 0)
+ linetab_offset = offset;
+ linetab_size = size;
+
+ free_linetab();
+
+ if (size == 0)
+ return 0;
+
+ if (bfd_seek (abfd, offset, 0) < 0)
return -1;
- linetab = (char *) xmalloc (size);
+ /* Allocate the desired table, plus a sentinel */
+ linetab = (char *) xmalloc (size + local_linesz);
- val = myread (chan, linetab, size);
+ val = bfd_read (linetab, size, 1, abfd);
if (val != size)
return -1;
- /* Swap all entries */
- q = linetab + size;
- for (p = linetab; p < q; p += LINESZ)
- bfd_coff_swap_lineno (symfile_bfd, (LINENO *)p);
+ /* Terminate it with an all-zero sentinel record */
+ memset (linetab + size, 0, local_linesz);
- linetab_offset = offset;
- linetab_size = size;
- make_cleanup (free, linetab); /* Be sure it gets de-allocated. */
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;
+enter_linenos (file_offset, first_line, last_line, section_offsets)
+ long file_offset;
+ register int first_line;
+ register int last_line;
+ struct section_offsets *section_offsets;
{
register char *rawptr;
- struct lineno lptr;
+ struct internal_lineno lptr;
if (file_offset < linetab_offset)
{
- fprintf (stderr, "\nInvalid symbol file: file_offset < linetab_offset.");
- return;
+ 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--;
- /* Bcopy since occaisionally rawptr isn't pointing at long
- boundaries. FIXME we need to byteswap here!!! */
- for (bcopy (rawptr, &lptr, LINESZ);
- L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line;
- rawptr += LINESZ, bcopy (rawptr, &lptr, LINESZ))
- {
- record_line (first_line + L_LNNO32 (&lptr), 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
+ + ANOFFSET (section_offsets, SECT_OFF_TEXT));
+ 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_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)
- sym = SYMBOL_VALUE_CHAIN (prev);
- else
- sym = opaque_type_chain[hash];
+ SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
}
else
{
- prev = sym;
- sym = SYMBOL_VALUE_CHAIN (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
-#if defined (clipper)
-#define BELIEVE_PCC_PROMOTION 1
-#endif
-
static struct symbol *
-process_coff_symbol (cs, aux)
+process_coff_symbol (cs, aux, section_offsets, objfile)
register struct coff_symbol *cs;
- register AUXENT *aux;
+ register union internal_auxent *aux;
+ struct section_offsets *section_offsets;
+ 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;
-#ifdef NAMES_HAVE_UNDERSCORE
- int offset = 1;
-#else
- int offset = 0;
-#endif
- 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));
+ 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;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_SECTION (sym) = cs_to_section (cs, objfile);
if (ISFCN (cs->c_type))
{
- SYMBOL_TYPE (sym) =
- lookup_function_type (decode_function_type (cs, cs->c_type, aux));
+ SYMBOL_VALUE (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+#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;
+ SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT);
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;
+ SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT);
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:
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)
- /* 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;
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ {
+ /* If PCC says a parameter is a short or a char,
+ aligned on an int boundary, realign it to the
+ "little end" of the int. */
+ struct type *temptype;
+ 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)
- /* 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;
+ /* 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. */
+ struct type *temptype;
+ 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)
+ {
+ if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR
+ || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC)
+ {
+ /* If we are giving a name to a type such as "pointer to
+ foo" or "function returning foo", we better not set
+ the TYPE_NAME. If the program contains "typedef char
+ *caddr_t;", we don't want all variables of type char
+ * to print as caddr_t. This is not just a
+ consequence of GDB's type management; CC and GCC (at
+ least through version 2.4) both output variables of
+ either type char * or caddr_t with the type
+ refering to the C_TPDEF symbol for caddr_t. If a future
+ compiler cleans this up it GDB is not ready for it
+ yet, but if it becomes ready we somehow need to
+ disable this check (without breaking the PCC/GCC2.4
+ case).
+
+ Sigh.
+
+ Fortunately, this check seems not to be necessary
+ for anything except pointers or functions. */
+ ;
+ }
+ else
+ TYPE_NAME (SYMBOL_TYPE (sym)) =
+ concat (SYMBOL_NAME (sym), NULL);
+ }
+#ifdef CXUX_TARGET
+ /* Ignore vendor section for Harris CX/UX targets. */
+ else if (cs->c_name[0] == '$')
+ break;
+#endif /* CXUX_TARGET */
/* 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));
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;
return sym;
}
\f
-/* Decode a coff type specifier;
- return the type that is meant. */
+/* Decode a coff type specifier; return the type that is meant. */
-static
-struct type *
+static struct type *
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;
unsigned int new_c_type;
{
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 a coff type specifier for function definition;
return the type that the function returns. */
-static
-struct type *
+static struct type *
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 (c_type), aux);
}
\f
/* basic C types */
-static
-struct type *
+static struct type *
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:
/* Shows up in DGUX, I think. Not sure where. */
- return builtin_type_void; /* shouldn't show up here */
+ 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 builtin_type_void;
+ 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\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. */
-/* Read the description of a structure (or union type)
- and return an object describing the type. */
+/* Read the description of a structure (or union 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 (!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)
{
list = new;
/* Save the data. */
- list->field.name = savestring (name, strlen (name));
+ list->field.name =
+ obsavestring (name,
+ strlen (name),
+ ¤t_objfile->symbol_obstack);
list->field.type = decode_type (ms, ms->c_type, &sub_aux);
list->field.bitpos = 8 * ms->c_value;
list->field.bitsize = 0;
list = new;
/* Save the data. */
- list->field.name = savestring (name, strlen (name));
+ list->field.name =
+ obsavestring (name,
+ strlen (name),
+ ¤t_objfile->symbol_obstack);
list->field.type = decode_type (ms, ms->c_type, &sub_aux);
list->field.bitpos = ms->c_value;
list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size;
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;
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 (!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));
-
- SYMBOL_NAME (sym) = savestring (name, strlen (name));
+ sym = (struct symbol *) obstack_alloc
+ (¤t_objfile->symbol_obstack,
+ sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
+
+ SYMBOL_NAME (sym) =
+ obsavestring (name, strlen (name),
+ ¤t_objfile->symbol_obstack);
SYMBOL_CLASS (sym) = LOC_CONST;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
SYMBOL_VALUE (sym) = ms->c_value;
/* 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) = 0;
- TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (syms->symbol);
- 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;
}
+
return type;
}
-/* Register our ability to parse symbols for coff BFD files */
+struct section_offsets *
+coff_symfile_offsets (objfile, addr)
+ struct objfile *objfile;
+ CORE_ADDR addr;
+{
+ struct section_offsets *section_offsets;
+ int i;
+
+ 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;
+}
+
+/* Register our ability to parse symbols for coff BFD files. */
static struct sym_fns coff_sym_fns =
{
- "coff", 4,
- coff_new_init, coff_symfile_init,
- coff_symfile_read, coff_symfile_discard
+ 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);
+ add_symtab_fns (&coff_sym_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff