old-cross-binutils/gdb/somread.c

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/* Read HP PA/Risc object files for GDB.
Copyright 1991, 1992, 1996 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
1995-08-02 03:41:12 +00:00
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "bfd.h"
#include <syms.h>
#include "symtab.h"
#include "symfile.h"
#include "objfiles.h"
#include "buildsym.h"
#include "stabsread.h"
#include "gdb-stabs.h"
#include "complaints.h"
* configure.in: Check for working mmap, ansi headers, string.h, strings.h, and memory.h. * configure: Regenerated. * gdb_stat.h: New file, "portable" <sys/stat.h>. * gdb_string.h: New file, "portable" <string.h>. * altos-xdep.c, arm-tdep.c, arm-xdep.c, convex-tdep.c, convex-xdep.c, coredep.c, cxux-nat.c, dbxread.c, exec.c, gould-xdep.c, hppa-tdep.c, i386aix-nat.c, i386b-nat.c, i386mach-nat.c, i386v-nat.c, infptrace.c, m88k-nat.c, main.c, mdebugread.c, objfiles.c, os9kread.c, procfs.c, pyr-xdep.c, rs6000-nat.c, source.c, standalone.c, stuff.c, sun386-nat.c, symfile.c, symm-nat.c, symm-tdep.c, symtab.c, top.c, ultra3-nat.c, ultra3-xdep.c, umax-xdep.c, xcoffread.c: Include "gdb_stat.h" instead of <sys/stat.h>. * alpha-tdep.c, breakpoint.c, buildsym.c, c-typeprint.c, ch-typeprint.c, coffread.c, command.c, core-sol2.c, core-svr4.c, core.c, corelow.c, cp-valprint.c, dbxread.c, dcache.c, demangle.c, dpx2-nat.c, dstread.c, dwarfread.c, elfread.c, environ.c, eval.c, exec.c, f-lang.c, f-typeprint.c, f-valprint.c, findvar.c, fork-child.c, gdbtypes.c, hpread.c, i386-tdep.c, infcmd.c, inflow.c, infptrace.c, infrun.c, irix5-nat.c, language.c, m2-typeprint.c, main.c, mdebugread.c, minsyms.c, mipsread.c, monitor.c, nlmread.c, objfiles.c, os9kread.c, osfsolib.c, parse.c, printcmd.c, procfs.c, regex.c, remote-adapt.c, remote-arc.c, remote-array.c, remote-bug.c, remote-e7000.c, remote-eb.c, remote-es.c, remote-hms.c, remote-mm.c, remote-os9k.c, remote-pa.c, remote-sim.c, remote-st.c, remote-udi.c, remote-utils.c, remote-vx.c, remote-vx29k.c, remote-vx68.c, remote-vx960.c, remote-vxmips.c, remote-vxsparc.c, remote.c, solib.c, somread.c, source.c, stabsread.c, stack.c, symfile.c, symmisc.c, symtab.c, target.c, top.c, typeprint.c, utils.c, valarith.c, valops.c, valprint.c, values.c, xcoffread.c: Include "gdb_string.h" instead of <string.h>. * gdbtk.c: Likewise. * config/xm-sysv4.h, i386/xm-ptx.h, m68k/xm-sun3os4.h, sparc/xm-sun4os4.h (HAVE_MMAP): Removed. * config/xm-lynx.h, config/i386/xm-ptx.h, config/m68k/nm-apollo68b.h, config/m68k/xm-hp300hpux.h, config/mips/xm-irix3.h, config/mips/xm-mips.h, config/mips/xm-news-mips.h, config/mips/xm-riscos.h, config/pa/hppah.h, config/rs6000/xm-rs6000.h, config/sparc/xm-sun4os4.h, config/sparc/xm-sun4sol2.h, config/vax/xm-vaxbsd.h, config/vax/xm-vaxult.h, config/vax/xm-vaxult2.h (MEM_FNS_DECLARED): Removed. * config/mips/xm-irix3.h, config/mips/xm-mips.h, config/pa/xm-hppah.h (memcpy, memset): Removed declarations.
1995-08-01 20:14:27 +00:00
#include "gdb_string.h"
#include "demangle.h"
#include "som.h"
#include "libhppa.h"
/* Various things we might complain about... */
static void
som_symfile_init PARAMS ((struct objfile *));
static void
som_new_init PARAMS ((struct objfile *));
static void
som_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int));
static void
som_symfile_finish PARAMS ((struct objfile *));
static void
som_symtab_read PARAMS ((bfd *, struct objfile *,
struct section_offsets *));
static struct section_offsets *
som_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
* configure.in: Add test for "long long" support. * configure: Regenerate with autoconf. * acconfig.h: Add CC_HAS_LONG_LONG * config.in: Regenerate with autoheader. * config/mips/tm-mips64.h (FORCE_LONG_LONG): Remove * config/sparc/tm-sp64.h (CC_HAS_LONG_LONG): Remove. * config/mips/tm-vr4300el.h (CC_HAS_LONG_LONG): Remove. * config/mips/tm-vr4300.h (CC_HAS_LONG_LONG): Remove. * config/mips/xm-irix5.h (CC_HAS_LONG_LONG): Remove (PRINTF_HAS_LONG_LONG): Remove. (FORCE_LONG_LONG): Remove. * config/powerpc/xm-aix.h (UINT_MAX): Undef and use gdb's version. * config/convex/xm-convex.h (CC_HAS_LONG_LONG): Remove (PRINTF_HAS_LONG_LONG): Remove. * config/xm-nbsd.h (CC_HAS_LONG_LONG): Remove. (PRINTF_HAS_LONG_LONG): Remove. * config/pa/tm-hppa.h (GET_FIELD): Put parens around subtraction inside shift. Put parens around subtraction in operand of bitwise and. (struct frame_info): Forward declare if __STDC__ defined. (frame_saved_regs): Ditto. (struct value): Ditto. (struct type): Ditto. (struct inferior_status): Ditto. (init_extra_frame_info): Add prototype. (skip_prologue): Ditto. (frameless_function_invocation): Ditto. (frame_chain): Ditto. (frame_chain_valid): Ditto. (saved_pc_after_call): Ditto. (hppa_fix_call_dummy): Ditto. (hppa_push_arguments): Ditto. (pa_do_registers_info): Ditto. (in_solib_call_trampoline): Ditto. (in_solib_return_trampoline): Ditto. (push_dummy_frame): Ditto. * convex-tdep.c (decout): Use print_longest rather than fprintf_filtered. * defs.h: Remove use of FORCE_LONG_LONG and __GNUC__ to set CC_HAS_LONG_LONG. (INT_MIN): Fix so it works correctly when assigned to a long long. * valprint.c (longest_to_int): Rewrite to remove dependence on INT_MIN and INT_MAX. (print_longest): Rewrite the code that falls back to synthesized hex output when LONGEST value is not representable as in a long and printf doesn't support printing long longs. * ch-valprint.c (chill_val_print): Cast 2nd arg of chill_print_type_scalar to LONGEST. chill_print_type_scalar): Make static and add prototype. * hppa-tdep.c (get_field): Ifdef out unused function. (set_field): Ditto. (extract_3): Ditto. (extract_5_store): Ditto. (extract_11): Ditto. (extract_12): Ditto. (deposit_17): Ditto. (extract_14): Convert to static and add prototype. (deposit_14): Ditto. (extract_21): Ditto. (deposit_21): Ditto. (extract_17): Ditto. (extract_5r_store): Ditto. (extract_5R_store): Ditto. (extract_5_load): Ditto. (find_proc_framesize): Ditto. (find_dummy_frame_regs): Ditto. (sign_extend): Ditto. (find_unwind_entry): Add prototype. (find_return_regnum): Ditto. (unwind_command): Ditto. (find_dummy_frame_regs): Add parens around subtraction in operand of bitwise-and. (skip_prologue): Add parens around operands of logical-and inside operand of logical-or. (sign_extend): Add parens around operands of subtraction inside operand of shift. (low_sign_extend): Ditto. * top.c (filename_completer): Convert old style decl of filename_completion_function into prototype. * f-lang.c (patch_common_entries): Ifdef out unused function. * stabsread.c (read_cfront_baseclasses): Remove unused local variable "msg_noterm". (resolve_cfront_continuation): Remove unused local variable "fip". (read_type): Remove unused variable xtypenums. (read_cfront_static_fields): Remove unused variable "i". (read_cfront_static_fields): Remove unused variable "nfields". (read_cfront_member_functions): Add missing comment terminator. (read_cfront_static_fields): Return 1 rather than random value. (read_cfront_baseclasses): Ditto. (read_cfront_baseclasses): Ditto. (read_cfront_baseclasses): Ditto. * somsolib.c (som_solib_create_inferior_hook): Remove unused variable "u". (som_solib_create_inferior_hook): Remove unused variable shadow_contents. (language.h): Add for needed prototypes. (som_solib_sharedlibrary_command): Add prototype. * hpread.c: (hpread_read_array_type): Add prototype. * somread.c (hpread_build_pysmtabs): Add prototype. (hpread_symfile_finish): Ditto. (hpread_symfile_init): Ditto. * hppah-nat.c (fetch_register): Convert old style decl to prototype. (gdbcore.h): Include for needed prototypes. (fetch_register): Remove unused variable "mess". * remote-pa.c (get_offsets): Ifdef out unused function. (remote_start_remote): Remove unused variable "timeout". (boot_board): Add prototype. (reaad_frame): Add prototype. (getpkt): Remove unused variable "bp". (remote_kill): Add prototype. (remote_mourn): Add prototype. (remote_insert_breakpoint): Add prototype. (remote_remove_breakpoint): Add prototype. * valops.c (value_push): Only use if PUSH_ARGUMENTS is not defined. * infcmd.c (do_registers_info): Only need prototype if DO_REGISTERS_INFO is not defined. (breakpoint_auto_delete_contents): Only need if CALL_DUMMY_BREAKPOINT_OFFSET is defined.
1996-07-28 06:32:48 +00:00
/* FIXME: These should really be in a common header somewhere */
extern void
hpread_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int));
extern void
hpread_symfile_finish PARAMS ((struct objfile *));
extern void
hpread_symfile_init PARAMS ((struct objfile *));
/*
LOCAL FUNCTION
som_symtab_read -- read the symbol table of a SOM file
SYNOPSIS
void som_symtab_read (bfd *abfd, struct objfile *objfile,
struct section_offsets *section_offsets)
DESCRIPTION
Given an open bfd, a base address to relocate symbols to, and a
flag that specifies whether or not this bfd is for an executable
or not (may be shared library for example), add all the global
function and data symbols to the minimal symbol table.
*/
static void
som_symtab_read (abfd, objfile, section_offsets)
bfd *abfd;
struct objfile *objfile;
struct section_offsets *section_offsets;
{
unsigned int number_of_symbols;
int val, dynamic;
char *stringtab;
asection *shlib_info;
struct symbol_dictionary_record *buf, *bufp, *endbufp;
char *symname;
CONST int symsize = sizeof (struct symbol_dictionary_record);
CORE_ADDR text_offset, data_offset;
text_offset = ANOFFSET (section_offsets, 0);
data_offset = ANOFFSET (section_offsets, 1);
number_of_symbols = bfd_get_symcount (abfd);
buf = alloca (symsize * number_of_symbols);
bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET);
val = bfd_read (buf, symsize * number_of_symbols, 1, abfd);
if (val != symsize * number_of_symbols)
error ("Couldn't read symbol dictionary!");
stringtab = alloca (obj_som_stringtab_size (abfd));
bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET);
val = bfd_read (stringtab, obj_som_stringtab_size (abfd), 1, abfd);
if (val != obj_som_stringtab_size (abfd))
error ("Can't read in HP string table.");
/* We need to determine if objfile is a dynamic executable (so we
can do the right thing for ST_ENTRY vs ST_CODE symbols).
There's nothing in the header which easily allows us to do
this. The only reliable way I know of is to check for the
existance of a $SHLIB_INFO$ section with a non-zero size. */
shlib_info = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");
if (shlib_info)
dynamic = (bfd_section_size (objfile->obfd, shlib_info) != 0);
else
dynamic = 0;
endbufp = buf + number_of_symbols;
for (bufp = buf; bufp < endbufp; ++bufp)
{
enum minimal_symbol_type ms_type;
QUIT;
switch (bufp->symbol_scope)
{
case SS_UNIVERSAL:
case SS_EXTERNAL:
switch (bufp->symbol_type)
{
case ST_SYM_EXT:
case ST_ARG_EXT:
continue;
case ST_CODE:
case ST_PRI_PROG:
case ST_SEC_PROG:
case ST_MILLICODE:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_text;
bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
break;
case ST_ENTRY:
symname = bufp->name.n_strx + stringtab;
/* For a dynamic executable, ST_ENTRY symbols are
the stubs, while the ST_CODE symbol is the real
function. */
if (dynamic)
ms_type = mst_solib_trampoline;
else
ms_type = mst_text;
bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
break;
case ST_STUB:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_solib_trampoline;
bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
break;
case ST_DATA:
symname = bufp->name.n_strx + stringtab;
bufp->symbol_value += data_offset;
ms_type = mst_data;
break;
default:
continue;
}
break;
#if 0
/* SS_GLOBAL and SS_LOCAL are two names for the same thing (!). */
case SS_GLOBAL:
#endif
case SS_LOCAL:
switch (bufp->symbol_type)
{
case ST_SYM_EXT:
case ST_ARG_EXT:
continue;
case ST_CODE:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_file_text;
bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
check_strange_names:
/* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local
label prefixes for stabs, constant data, etc. So we need
only filter out L$ symbols which are left in due to
limitations in how GAS generates SOM relocations.
When linking in the HPUX C-library the HP linker has
the nasty habit of placing section symbols from the literal
subspaces in the middle of the program's text. Filter
those out as best we can. Check for first and last character
being '$'.
And finally, the newer HP compilers emit crud like $PIC_foo$N
in some circumstance (PIC code I guess). It's also claimed
that they emit D$ symbols too. What stupidity. */
if ((symname[0] == 'L' && symname[1] == '$')
|| (symname[0] == '$' && symname[strlen(symname) - 1] == '$')
|| (symname[0] == 'D' && symname[1] == '$')
|| (strncmp (symname, "$PIC", 4) == 0))
continue;
break;
case ST_PRI_PROG:
case ST_SEC_PROG:
case ST_MILLICODE:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_file_text;
bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
break;
case ST_ENTRY:
symname = bufp->name.n_strx + stringtab;
/* For a dynamic executable, ST_ENTRY symbols are
the stubs, while the ST_CODE symbol is the real
function. */
if (dynamic)
ms_type = mst_solib_trampoline;
else
ms_type = mst_file_text;
bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
break;
case ST_STUB:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_solib_trampoline;
bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
break;
case ST_DATA:
symname = bufp->name.n_strx + stringtab;
bufp->symbol_value += data_offset;
ms_type = mst_file_data;
goto check_strange_names;
default:
continue;
}
break;
/* This can happen for common symbols when -E is passed to the
final link. No idea _why_ that would make the linker force
common symbols to have an SS_UNSAT scope, but it does.
This also happens for weak symbols, but their type is
ST_DATA. */
case SS_UNSAT:
switch (bufp->symbol_type)
{
case ST_STORAGE:
case ST_DATA:
symname = bufp->name.n_strx + stringtab;
bufp->symbol_value += data_offset;
ms_type = mst_data;
break;
default:
continue;
}
break;
default:
continue;
}
if (bufp->name.n_strx > obj_som_stringtab_size (abfd))
error ("Invalid symbol data; bad HP string table offset: %d",
bufp->name.n_strx);
(laying some groundwork for a fix for PR 8443) * coffread.c (record_minimal_symbol): Don't presave name string on symbol_obstack before passing to prim_record_minimal_symbol. It now handles saving the string itself. * dbxread.c (read_dbx_dynamic_symtab): Ditto. * mipsread.c (read_alphacoff_dynamic_symtab): Ditto. * os9kread.c (record_minimal_symbol): Ditto. * solib.c (solib_add_common_symbols): Ditto. * coffread.c (coff_symtab_read): Don't presave name string on symbol_obstack before passing to prim_record_minimal_symbol_and_info. It now handles saving the string itself. * dbxread.c (record_minimal_symbol): Ditto. * elfread.c (record_minimal_symbol_and_info): Ditto. * dstread.c (record_minimal_symbol): Remove static function that just called prim_record_minimal_symbol with the same args (after change to prim_record_minimal_symbol to do it's own name string saves). * nlmread.c (record_minimal_symbol): Ditto. * somread.c (record_minimal_symbol): Ditto. * hpread.c (hpread_read_enum_type): Save symbol name on symbol obstack. (hpread_read_function_type): Ditto. (hpread_process_one_debug_symbol): Ditto. * mdebugread.c (parse_symbol): Ditto. (new_symbol): Ditto. * minsyms.c (prim_record_minimal_symbol_and_info): Ditto. * coffread.c (process_coff_symbol): Use obsavestring to save SYMBOL_NAME, rather than obstack_copy0. * dstread.c (create_new_symbol): Ditto * symfile.c (obconcat): Ditto. * stabsread.c (patch_block_stabs): Ditto. * xcoffread.c (SYMNAME_ALLOC): Ditto. * symfile.c (obsavestring): Update comments * solib.c (solib_add_common_symbols): Remove local var origname.
1996-07-08 09:05:18 +00:00
prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type,
objfile);
}
}
/* Scan and build partial symbols for a symbol file.
We have been initialized by a call to som_symfile_init, which
currently does nothing.
SECTION_OFFSETS is a set of offsets to apply to relocate the symbols
in each section. This is ignored, as it isn't needed for SOM.
MAINLINE is true if we are reading the main symbol
table (as opposed to a shared lib or dynamically loaded file).
This function only does the minimum work necessary for letting the
user "name" things symbolically; it does not read the entire symtab.
Instead, it reads the external and static symbols and puts them in partial
symbol tables. When more extensive information is requested of a
file, the corresponding partial symbol table is mutated into a full
fledged symbol table by going back and reading the symbols
for real.
We look for sections with specific names, to tell us what debug
format to look for: FIXME!!!
somstab_build_psymtabs() handles STABS symbols.
Note that SOM files have a "minimal" symbol table, which is vaguely
reminiscent of a COFF symbol table, but has only the minimal information
necessary for linking. We process this also, and use the information to
build gdb's minimal symbol table. This gives us some minimal debugging
capability even for files compiled without -g. */
static void
som_symfile_read (objfile, section_offsets, mainline)
struct objfile *objfile;
struct section_offsets *section_offsets;
int mainline;
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
init_minimal_symbol_collection ();
back_to = make_cleanup (discard_minimal_symbols, 0);
/* Process the normal SOM symbol table first. */
som_symtab_read (abfd, objfile, section_offsets);
/* Now read information from the stabs debug sections. */
stabsect_build_psymtabs (objfile, section_offsets, mainline,
"$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
/* Now read the native debug information. */
hpread_build_psymtabs (objfile, section_offsets, mainline);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile. */
install_minimal_symbols (objfile);
/* Force hppa-tdep.c to re-read the unwind descriptors. */
objfile->obj_private = NULL;
do_cleanups (back_to);
}
/* Initialize anything that needs initializing when a completely new symbol
file is specified (not just adding some symbols from another file, e.g. a
shared library).
We reinitialize buildsym, since we may be reading stabs from a SOM file. */
static void
som_new_init (ignore)
struct objfile *ignore;
{
stabsread_new_init ();
buildsym_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
som_symfile_finish (objfile)
struct objfile *objfile;
{
if (objfile -> sym_stab_info != NULL)
{
mfree (objfile -> md, objfile -> sym_stab_info);
}
hpread_symfile_finish (objfile);
}
/* SOM specific initialization routine for reading symbols. */
static void
som_symfile_init (objfile)
struct objfile *objfile;
{
/* SOM objects may be reordered, so set OBJF_REORDERED. If we
find this causes a significant slowdown in gdb then we could
set it in the debug symbol readers only when necessary. */
objfile->flags |= OBJF_REORDERED;
hpread_symfile_init (objfile);
}
/* SOM specific parsing routine for section offsets.
Plain and simple for now. */
static struct section_offsets *
som_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_SECTION_OFFSETS);
/* First see if we're a shared library. If so, get the section
offsets from the library, else get them from addr. */
if (!som_solib_section_offsets (objfile, section_offsets))
{
for (i = 0; i < SECT_OFF_MAX; i++)
ANOFFSET (section_offsets, i) = addr;
}
return section_offsets;
}
/* Register that we are able to handle SOM object file formats. */
static struct sym_fns som_sym_fns =
{
bfd_target_som_flavour,
som_new_init, /* sym_new_init: init anything gbl to entire symtab */
som_symfile_init, /* sym_init: read initial info, setup for sym_read() */
som_symfile_read, /* sym_read: read a symbol file into symtab */
som_symfile_finish, /* sym_finish: finished with file, cleanup */
som_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */
NULL /* next: pointer to next struct sym_fns */
};
void
_initialize_somread ()
{
add_symtab_fns (&som_sym_fns);
}