mirrors/binutils-gdb
0
0
Fork 0
mirror of https://sourceware.org/git/binutils-gdb.git synced 2025-01-18 05:54:26 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bring IEEE_FLOAT under gdbarch's control.

Browse Source 
* gdbarch.sh (IEEE_FLOAT): New entry.
* gdbarch.c, gdbarch.h: Regenerated.
* valprint.c (IEEE_FLOAT): Provide a default #definition for this.
(print_floating): Use IEEE_FLOAT as if it were an expression; use
the code specific to IEEE-format numbers whenever the value of
IEEE_FLOAT is non-zero.
* config/a29k/tm-a29k.h, config/alpha/tm-alpha.h,
config/arc/tm-arc.h, config/arm/tm-arm.h, config/fr30/tm-fr30.h,
config/h8300/tm-h8300.h, config/i386/tm-i386.h,
config/i960/tm-i960.h, config/m88k/tm-m88k.h,
config/mips/tm-mips.h, config/pa/tm-hppa.h,
config/sparc/tm-sparc.h, config/delta/tm-delta.h,
config/frv/tm-frv.h (IEEE_FLOAT): For all ports that #define
IEEE_FLOAT, make sure they give it the value (1).
This commit is contained in:
Jim Blandy 2000-04-14 19:14:19 +00:00
parent 16c088d037
commit 7355ddbace
21 changed files with 122 additions and 86 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
gdb/config/a29k/tm-a29k.h
View File

@ -31,7 +31,7 @@
#define TARGET_BYTE_ORDER BIG_ENDIAN
/* Floating point uses IEEE representations. */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Recognize our magic number. */
#define BADMAG(x) ((x).f_magic != 0572)

2
gdb/config/alpha/tm-alpha.h
View File

@ -42,7 +42,7 @@ struct symbol;
#define TARGET_PTR_BIT 64
/* Floating point is IEEE compliant */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Number of traps that happen between exec'ing the shell
* to run an inferior, and when we finally get to

2
gdb/config/arc/tm-arc.h
View File

@ -26,7 +26,7 @@
#define TARGET_BYTE_ORDER_SELECTABLE
/* We have IEEE floating point, if we have any float at all. */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Offset from address of function to start of its code.
Zero on most machines. */

2
gdb/config/arm/tm-arm.h
View File

@ -31,7 +31,7 @@ struct value;
#define TARGET_BYTE_ORDER_DEFAULT LITTLE_ENDIAN
/* IEEE format floating point. */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
#define TARGET_DOUBLE_FORMAT (target_byte_order == BIG_ENDIAN \
? &floatformat_ieee_double_big \
: &floatformat_ieee_double_littlebyte_bigword)

2
gdb/config/fr30/tm-fr30.h
View File

@ -186,7 +186,7 @@ extern void fr30_store_return_value PARAMS ((struct type * type, char *valbuf));
#define TARGET_FR30
/* IEEE format floating point */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Define other aspects of the stack frame. */

2
gdb/config/h8300/tm-h8300.h
View File

@ -50,7 +50,7 @@ extern int h8300smode;
extern void h8300_init_extra_frame_info ();
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Define the bit, byte, and word ordering of the machine. */
#define TARGET_BYTE_ORDER BIG_ENDIAN
#undef TARGET_INT_BIT

2
gdb/config/h8500/tm-h8500.h
View File

@ -22,7 +22,7 @@
#define GDB_TARGET_IS_H8500
#define IEEE_FLOAT 1
#define IEEE_FLOAT (1)
/* Define the bit, byte, and word ordering of the machine. */

2
gdb/config/i386/tm-i386.h
View File

@ -44,7 +44,7 @@ struct type;
/* Used for example in valprint.c:print_floating() to enable checking
for NaN's */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Number of traps that happen between exec'ing the shell to run an
inferior, and when we finally get to the inferior code. This is 2

2
gdb/config/i960/tm-i960.h
View File

@ -40,7 +40,7 @@
/* We have IEEE floating point, if we have any float at all. */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Offset from address of function to start of its code.
Zero on most machines. */

2
gdb/config/m68k/tm-m68k.h
View File

@ -20,7 +20,7 @@
/* Generic 68000 stuff, to be included by other tm-*.h files. */
#define IEEE_FLOAT 1
#define IEEE_FLOAT (1)
/* Define the bit, byte, and word ordering of the machine. */
#define TARGET_BYTE_ORDER BIG_ENDIAN

2
gdb/config/m88k/tm-m88k.h
View File

@ -43,7 +43,7 @@
init_extra_frame_info (fromleaf, fi)
extern void init_extra_frame_info ();
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* Offset from address of function to start of its code.
Zero on most machines. */

2
gdb/config/mips/tm-mips.h
View File

@ -58,7 +58,7 @@ struct value;
#endif
/* Floating point is IEEE compliant */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* The name of the usual type of MIPS processor that is in the target
system. */

2
gdb/config/pa/tm-hppa.h
View File

@ -53,7 +53,7 @@ struct inferior_status;
/* Watch out for NaNs */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* On the PA, any pass-by-value structure > 8 bytes is actually
passed via a pointer regardless of its type or the compiler

2
gdb/config/sh/tm-sh.h
View File

@ -27,7 +27,7 @@ struct type;
#define GDB_TARGET_IS_SH
#define IEEE_FLOAT 1
#define IEEE_FLOAT (1)
/* Define the bit, byte, and word ordering of the machine. */

2
gdb/config/sparc/tm-sparc.h
View File

@ -28,7 +28,7 @@ struct value;
#define TARGET_BYTE_ORDER BIG_ENDIAN
/* Floating point is IEEE compatible. */
#define IEEE_FLOAT
#define IEEE_FLOAT (1)
/* If an argument is declared "register", Sun cc will keep it in a register,
never saving it onto the stack. So we better not believe the "p" symbol

2
gdb/config/w65/tm-w65.h
View File

@ -22,7 +22,7 @@
#define GDB_TARGET_IS_W65
#define IEEE_FLOAT 1
#define IEEE_FLOAT (1)
/* Define the bit, byte, and word ordering of the machine. */

2
gdb/config/z8k/tm-z8k.h
View File

@ -18,7 +18,7 @@
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#define IEEE_FLOAT 1
#define IEEE_FLOAT (1)
#undef TARGET_INT_BIT
#undef TARGET_LONG_BIT

23
gdb/gdbarch.c
View File

@ -135,6 +135,7 @@ struct gdbarch
int float_bit;
int double_bit;
int long_double_bit;
int ieee_float;
gdbarch_read_pc_ftype *read_pc;
gdbarch_write_pc_ftype *write_pc;
gdbarch_read_fp_ftype *read_fp;
@ -273,6 +274,7 @@ struct gdbarch startup_gdbarch = {
0,
0,
0,
0,
generic_get_saved_register,
0,
0,
@ -335,6 +337,7 @@ gdbarch_alloc (const struct gdbarch_info *info,
/* Force the explicit initialization of these. */
gdbarch->bfd_vma_bit = TARGET_ARCHITECTURE->bits_per_address;
gdbarch->ieee_float = 1;
gdbarch->num_regs = -1;
gdbarch->sp_regnum = -1;
gdbarch->fp_regnum = -1;
@ -423,6 +426,7 @@ verify_gdbarch (struct gdbarch *gdbarch)
if ((GDB_MULTI_ARCH >= 1)
&& (gdbarch->long_double_bit == 0))
internal_error ("gdbarch: verify_gdbarch: long_double_bit invalid");
/* Skip verify of ieee_float, invalid_p == 0 */
if ((GDB_MULTI_ARCH >= 1)
&& (gdbarch->read_pc == 0))
internal_error ("gdbarch: verify_gdbarch: read_pc invalid");
@ -655,6 +659,9 @@ gdbarch_dump (void)
fprintf_unfiltered (gdb_stdlog,
"gdbarch_update: TARGET_LONG_DOUBLE_BIT = %ld\n",
(long) TARGET_LONG_DOUBLE_BIT);
fprintf_unfiltered (gdb_stdlog,
"gdbarch_update: IEEE_FLOAT = %ld\n",
(long) IEEE_FLOAT);
fprintf_unfiltered (gdb_stdlog,
"gdbarch_update: TARGET_READ_PC = 0x%08lx\n",
(long) current_gdbarch->read_pc
@ -1120,6 +1127,22 @@ set_gdbarch_long_double_bit (struct gdbarch *gdbarch,
gdbarch->long_double_bit = long_double_bit;
}
int
gdbarch_ieee_float (struct gdbarch *gdbarch)
{
/* Skip verify of ieee_float, invalid_p == 0 */
if (gdbarch_debug >= 2)
fprintf_unfiltered (gdb_stdlog, "gdbarch_ieee_float called\n");
return gdbarch->ieee_float;
}
void
set_gdbarch_ieee_float (struct gdbarch *gdbarch,
int ieee_float)
{
gdbarch->ieee_float = ieee_float;
}
CORE_ADDR
gdbarch_read_pc (struct gdbarch *gdbarch, int pid)
{

8
gdb/gdbarch.h
View File

@ -171,6 +171,14 @@ extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_doubl
#endif
#endif
extern int gdbarch_ieee_float (struct gdbarch *gdbarch);
extern void set_gdbarch_ieee_float (struct gdbarch *gdbarch, int ieee_float);
#if GDB_MULTI_ARCH
#if (GDB_MULTI_ARCH > 1) || !defined (IEEE_FLOAT)
#define IEEE_FLOAT (gdbarch_ieee_float (current_gdbarch))
#endif
#endif
typedef CORE_ADDR (gdbarch_read_pc_ftype) (int pid);
extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, int pid);
extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);

3
gdb/gdbarch.sh
View File

@ -193,6 +193,7 @@ v:1:TARGET_LONG_LONG_BIT:int:long_long_bit::::8 * sizeof (LONGEST):0
v:1:TARGET_FLOAT_BIT:int:float_bit::::8 * sizeof (float):0
v:1:TARGET_DOUBLE_BIT:int:double_bit::::8 * sizeof (double):0
v:1:TARGET_LONG_DOUBLE_BIT:int:long_double_bit::::8 * sizeof (long double):0
v:1:IEEE_FLOAT:int:ieee_float::::0:1:0
#
f:1:TARGET_READ_PC:CORE_ADDR:read_pc:int pid:pid::0:0
f:1:TARGET_WRITE_PC:void:write_pc:CORE_ADDR val, int pid:val, pid::0:0
@ -815,7 +816,7 @@ copyright
cat <<EOF
#include "defs.h"
#include "gdbarch-utils.h"
#include "arch-utils.h"
#if GDB_MULTI_ARCH
#include "gdbcmd.h"

140
gdb/valprint.c
View File

@ -561,6 +561,13 @@ longest_to_int (arg)
return (rtnval);
}
/* Provide a default value for IEEE_FLOAT. */
#ifndef IEEE_FLOAT
#define IEEE_FLOAT (0)
#endif
/* Print a floating point value of type TYPE, pointed to in GDB by VALADDR,
on STREAM. */
@ -574,85 +581,82 @@ print_floating (valaddr, type, stream)
int inv;
unsigned len = TYPE_LENGTH (type);
#if defined (IEEE_FLOAT)
/* Check for NaN's. Note that this code does not depend on us being
on an IEEE conforming system. It only depends on the target
machine using IEEE representation. This means (a)
cross-debugging works right, and (2) IEEE_FLOAT can (and should)
be defined for systems like the 68881, which uses IEEE
be non-zero for systems like the 68881, which uses IEEE
representation, but is not IEEE conforming. */
if (IEEE_FLOAT)
{
unsigned long low, high;
/* Is the sign bit 0? */
int nonnegative;
/* Is it is a NaN (i.e. the exponent is all ones and
the fraction is nonzero)? */
int is_nan;
{
unsigned long low, high;
/* Is the sign bit 0? */
int nonnegative;
/* Is it is a NaN (i.e. the exponent is all ones and
the fraction is nonzero)? */
int is_nan;
/* For lint, initialize these two variables to suppress warning: */
low = high = nonnegative = 0;
if (len == 4)
{
/* It's single precision. */
/* Assume that floating point byte order is the same as
integer byte order. */
low = extract_unsigned_integer (valaddr, 4);
nonnegative = ((low & 0x80000000) == 0);
is_nan = ((((low >> 23) & 0xFF) == 0xFF)
&& 0 != (low & 0x7FFFFF));
low &= 0x7fffff;
high = 0;
}
else if (len == 8)
{
/* It's double precision. Get the high and low words. */
/* For lint, initialize these two variables to suppress warning: */
low = high = nonnegative = 0;
if (len == 4)
{
/* It's single precision. */
/* Assume that floating point byte order is the same as
integer byte order. */
low = extract_unsigned_integer (valaddr, 4);
nonnegative = ((low & 0x80000000) == 0);
is_nan = ((((low >> 23) & 0xFF) == 0xFF)
&& 0 != (low & 0x7FFFFF));
low &= 0x7fffff;
high = 0;
}
else if (len == 8)
{
/* It's double precision. Get the high and low words. */
/* Assume that floating point byte order is the same as
integer byte order. */
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
{
low = extract_unsigned_integer (valaddr + 4, 4);
high = extract_unsigned_integer (valaddr, 4);
}
else
{
low = extract_unsigned_integer (valaddr, 4);
high = extract_unsigned_integer (valaddr + 4, 4);
}
nonnegative = ((high & 0x80000000) == 0);
is_nan = (((high >> 20) & 0x7ff) == 0x7ff
&& !((((high & 0xfffff) == 0)) && (low == 0)));
high &= 0xfffff;
}
else
{
/* Assume that floating point byte order is the same as
integer byte order. */
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
{
low = extract_unsigned_integer (valaddr + 4, 4);
high = extract_unsigned_integer (valaddr, 4);
}
else
{
low = extract_unsigned_integer (valaddr, 4);
high = extract_unsigned_integer (valaddr + 4, 4);
}
nonnegative = ((high & 0x80000000) == 0);
is_nan = (((high >> 20) & 0x7ff) == 0x7ff
&& !((((high & 0xfffff) == 0)) && (low == 0)));
high &= 0xfffff;
}
else
{
#ifdef TARGET_ANALYZE_FLOATING
TARGET_ANALYZE_FLOATING;
TARGET_ANALYZE_FLOATING;
#else
/* Extended. We can't detect extended NaNs for this target.
Also note that currently extendeds get nuked to double in
REGISTER_CONVERTIBLE. */
is_nan = 0;
/* Extended. We can't detect extended NaNs for this target.
Also note that currently extendeds get nuked to double in
REGISTER_CONVERTIBLE. */
is_nan = 0;
#endif
}
}
if (is_nan)
{
/* The meaning of the sign and fraction is not defined by IEEE.
But the user might know what they mean. For example, they
(in an implementation-defined manner) distinguish between
signaling and quiet NaN's. */
if (high)
fprintf_filtered (stream, "-NaN(0x%lx%.8lx)" + !!nonnegative,
high, low);
else
fprintf_filtered (stream, "-NaN(0x%lx)" + nonnegative, low);
return;
}
}
#endif /* IEEE_FLOAT. */
if (is_nan)
{
/* The meaning of the sign and fraction is not defined by IEEE.
But the user might know what they mean. For example, they
(in an implementation-defined manner) distinguish between
signaling and quiet NaN's. */
if (high)
fprintf_filtered (stream, "-NaN(0x%lx%.8lx)" + !!nonnegative,
high, low);
else
fprintf_filtered (stream, "-NaN(0x%lx)" + nonnegative, low);
return;
}
}
doub = unpack_double (type, valaddr, &inv);
if (inv)