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binutils-gdb/gdb/i387-tdep.c

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* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
/* Intel 387 floating point stuff.
1998-10-16 Jason Molenda (jsm@bugshack.cygnus.com) * command.c copying.c copying.awk core-aout.c core-regset.c corelow.c dcache.c i386-tdep.c i386v4-nat.c i387-tdep.c infcmd.c infptrace.c infrun.c remote.c solib.c symfile.c symmisc.c valarith.c: Add prototypes. * defs.h: Add prototype for utils.c::do_run_cleanups. * gdbtypes.c: Add prototypes. (make_pointer_type): Add braces to remove nested if-else ambiguity. (make_reference_type): Ditto. * printcmd.c (printf_command): Initialize 'f' and 'string' at function startup to suppress possibly-used-before-initialized warning. * remote-utils.c: Add prototypes. (sr_pollchar): Add braces to remove nested if-else ambiguity. * ser-tcp.c: Add prototypes. (wait_for): Add braces to remove nested if-else ambiguity. (tcp_readchar): Ditto. * ser-unix.c: Add prototypes. (get_tty_state): Don't define errno here. (get_tty_state): Don't define errno here. (hardwire_readchar): Only define 't' if we are compiling in a Cygwin environment. * symtab.c: Add prototypes. (find_methods): Add braces to remove nested if-else ambiguity. (search_symbols): Set 'i' to an initial value to suppress a possibly-used-before-initialized warning. * valops.c: Add prototypes. (value_cast): Set 'eltype2' to an initial value to suppress a possibly-used-before-initialized warning. (value_of_variable): Add braces to remove nested if-else ambiguity. (value_of_this): Ditto. * valprint.c: Add prototypes. (print_floating): Add braces to remove nested if-else ambiguity. Looks like a big change, but it is really just a lot of small stuff. In the cases where GCC was flagging a possible use-before-initialized warning on variables, it turned out that these were being used properly but GCC couldn't see that.
1998-10-16 23:45:06 +02:00
Copyright (C) 1988, 1989, 1991, 1998 Free Software Foundation, Inc.
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
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
Update FSF address.
1995-08-02 05:41:12 +02:00
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
#include "defs.h"
#include "frame.h"
#include "inferior.h"
#include "language.h"
#include "gdbcore.h"
* i387-tdep.c, i386-tdep.c i386v-nat.c, i386aix-nat.c, i386m3-nat.c, config/m68k/tm-m68k.h, i960-tdep.c config/i960/tm-i960.h, remote-nindy.c, config/m88k/tm-m88k.h, m88k-tdep.c: Use floatformat.h instead of ieee-float.h. * sparc-tdep.c: Remove now-obsolete ieee-float.h stuff * findvar.c: Update comment regarding ieee-float.h.
1994-02-28 07:02:11 +01:00
#include "floatformat.h"
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
1998-10-16 Jason Molenda (jsm@bugshack.cygnus.com) * command.c copying.c copying.awk core-aout.c core-regset.c corelow.c dcache.c i386-tdep.c i386v4-nat.c i387-tdep.c infcmd.c infptrace.c infrun.c remote.c solib.c symfile.c symmisc.c valarith.c: Add prototypes. * defs.h: Add prototype for utils.c::do_run_cleanups. * gdbtypes.c: Add prototypes. (make_pointer_type): Add braces to remove nested if-else ambiguity. (make_reference_type): Ditto. * printcmd.c (printf_command): Initialize 'f' and 'string' at function startup to suppress possibly-used-before-initialized warning. * remote-utils.c: Add prototypes. (sr_pollchar): Add braces to remove nested if-else ambiguity. * ser-tcp.c: Add prototypes. (wait_for): Add braces to remove nested if-else ambiguity. (tcp_readchar): Ditto. * ser-unix.c: Add prototypes. (get_tty_state): Don't define errno here. (get_tty_state): Don't define errno here. (hardwire_readchar): Only define 't' if we are compiling in a Cygwin environment. * symtab.c: Add prototypes. (find_methods): Add braces to remove nested if-else ambiguity. (search_symbols): Set 'i' to an initial value to suppress a possibly-used-before-initialized warning. * valops.c: Add prototypes. (value_cast): Set 'eltype2' to an initial value to suppress a possibly-used-before-initialized warning. (value_of_variable): Add braces to remove nested if-else ambiguity. (value_of_this): Ditto. * valprint.c: Add prototypes. (print_floating): Add braces to remove nested if-else ambiguity. Looks like a big change, but it is really just a lot of small stuff. In the cases where GCC was flagging a possible use-before-initialized warning on variables, it turned out that these were being used properly but GCC couldn't see that.
1998-10-16 23:45:06 +02:00
void i387_to_double PARAMS ((char *, char *));
void double_to_i387 PARAMS ((char *, char *));
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
/* FIXME: Eliminate these routines when we have the time to change all
the callers. */
* Check in Fred Fish's changes in these modules. Fred will make ChangeLog entries for all of them.
1992-02-22 02:46:16 +01:00
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
void
i387_to_double (from, to)
* Check in Fred Fish's changes in these modules. Fred will make ChangeLog entries for all of them.
1992-02-22 02:46:16 +01:00
char *from;
char *to;
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
{
* i387-tdep.c, i386-tdep.c i386v-nat.c, i386aix-nat.c, i386m3-nat.c, config/m68k/tm-m68k.h, i960-tdep.c config/i960/tm-i960.h, remote-nindy.c, config/m88k/tm-m88k.h, m88k-tdep.c: Use floatformat.h instead of ieee-float.h. * sparc-tdep.c: Remove now-obsolete ieee-float.h stuff * findvar.c: Update comment regarding ieee-float.h.
1994-02-28 07:02:11 +01:00
floatformat_to_double (&floatformat_i387_ext, from, (double *)to);
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
void
double_to_i387 (from, to)
* Check in Fred Fish's changes in these modules. Fred will make ChangeLog entries for all of them.
1992-02-22 02:46:16 +01:00
char *from;
char *to;
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
{
* i387-tdep.c, i386-tdep.c i386v-nat.c, i386aix-nat.c, i386m3-nat.c, config/m68k/tm-m68k.h, i960-tdep.c config/i960/tm-i960.h, remote-nindy.c, config/m88k/tm-m88k.h, m88k-tdep.c: Use floatformat.h instead of ieee-float.h. * sparc-tdep.c: Remove now-obsolete ieee-float.h stuff * findvar.c: Update comment regarding ieee-float.h.
1994-02-28 07:02:11 +01:00
floatformat_from_double (&floatformat_i387_ext, (double *)from, to);
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
void
print_387_control_word (control)
* Check in Fred Fish's changes in these modules. Fred will make ChangeLog entries for all of them.
1992-02-22 02:46:16 +01:00
unsigned int control;
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
{
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("control %s: ", local_hex_string(control));
printf_unfiltered ("compute to ");
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
switch ((control >> 8) & 3)
{
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
case 0: printf_unfiltered ("24 bits; "); break;
case 1: printf_unfiltered ("(bad); "); break;
case 2: printf_unfiltered ("53 bits; "); break;
case 3: printf_unfiltered ("64 bits; "); break;
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("round ");
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
switch ((control >> 10) & 3)
{
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
case 0: printf_unfiltered ("NEAREST; "); break;
case 1: printf_unfiltered ("DOWN; "); break;
case 2: printf_unfiltered ("UP; "); break;
case 3: printf_unfiltered ("CHOP; "); break;
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
if (control & 0x3f)
{
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("mask:");
if (control & 0x0001) printf_unfiltered (" INVALID");
if (control & 0x0002) printf_unfiltered (" DENORM");
if (control & 0x0004) printf_unfiltered (" DIVZ");
if (control & 0x0008) printf_unfiltered (" OVERF");
if (control & 0x0010) printf_unfiltered (" UNDERF");
if (control & 0x0020) printf_unfiltered (" LOS");
printf_unfiltered (";");
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("\n");
Globs of changes. See the ChangeLog for details. Most related to using the new mmalloc package.
1992-03-15 02:09:14 +01:00
if (control & 0xe080) warning ("reserved bits on: %s\n",
Output hex with local_hex_string for Modula-2 support.
1991-09-19 09:39:54 +02:00
local_hex_string(control & 0xe080));
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
void
print_387_status_word (status)
* Check in Fred Fish's changes in these modules. Fred will make ChangeLog entries for all of them.
1992-02-22 02:46:16 +01:00
unsigned int status;
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
{
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("status %s: ", local_hex_string (status));
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
if (status & 0xff)
{
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("exceptions:");
if (status & 0x0001) printf_unfiltered (" INVALID");
if (status & 0x0002) printf_unfiltered (" DENORM");
if (status & 0x0004) printf_unfiltered (" DIVZ");
if (status & 0x0008) printf_unfiltered (" OVERF");
if (status & 0x0010) printf_unfiltered (" UNDERF");
if (status & 0x0020) printf_unfiltered (" LOS");
if (status & 0x0040) printf_unfiltered (" FPSTACK");
printf_unfiltered ("; ");
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("flags: %d%d%d%d; ",
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
(status & 0x4000) != 0,
(status & 0x0400) != 0,
(status & 0x0200) != 0,
(status & 0x0100) != 0);
* config/i386/*aix*, i386aix-nat.c: New files. * configure.in: Use them. * alldeps.mak: List them. * coffread.c (decode_base_type): Deal with anonymous enum type. * i387-tdep.c (print_387_status_word): Add comment re "top". * i386-tdep.c [I386_AIX_TARGET] (i386_extract_return_value): New func. * dbxread.c: Use SEEK_SET and SEEK_CUR, not L_*. Define them if and only if not defined by a header file. * mipsread.c: Don't define L_SET or L_INCR.
1993-06-22 01:46:49 +02:00
Change the stream argument to _filtered to GDB_FILE *. Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1993-11-01 23:25:23 +01:00
printf_unfiltered ("top %d\n", (status >> 11) & 7);
* i387-tdep.c: New file, consolidates most 80387 support, and eliminates host dependency on double<->extended conversions.
1991-09-19 01:00:51 +02:00
}
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