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* i387-nat.c: Include "i387-nat.h". Use regnum instead of regno

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consistently for parameter names.  Fix comments accordingly.
(i387_supply_register): New function.
(i387_supply_fsave): Implement using i387_supply_register.
* i387-nat.h: Use regnum instead of regno consistently for
parameter names.  Fix comments accordingly.
(i387_supply_register): New prototype.
This commit is contained in:
Mark Kettenis
2001-02-17 09:01:14 +00:00
parent 8d6dd99d61
commit f31e928cd4
3 changed files with 65 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
gdb/ChangeLog
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@ -1,3 +1,13 @@
2001-02-17 Mark Kettenis <kettenis@gnu.org>
* i387-nat.c: Include "i387-nat.h". Use regnum instead of regno
consistently for parameter names. Fix comments accordingly.
(i387_supply_register): New function.
(i387_supply_fsave): Implement using i387_supply_register.
* i387-nat.h: Use regnum instead of regno consistently for
parameter names. Fix comments accordingly.
(i387_supply_register): New prototype.
2001-02-16 Michael Snyder <msnyder@mvstp600e.cygnus.com> 2001-02-16 Michael Snyder <msnyder@mvstp600e.cygnus.com>
* remote.c (build_remote_gdbarch_data): Use new TARGET_ADDR_BIT * remote.c (build_remote_gdbarch_data): Use new TARGET_ADDR_BIT

74
gdb/i387-nat.c
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@ -1,5 +1,5 @@
/* Native-dependent code for the i387. /* Native-dependent code for the i387.
Copyright 2000 Free Software Foundation, Inc. Copyright 2000, 2001 Free Software Foundation, Inc.
This file is part of GDB. This file is part of GDB.
@ -22,15 +22,17 @@
#include "inferior.h" #include "inferior.h"
#include "value.h" #include "value.h"
#include "i387-nat.h"
/* FIXME: kettenis/2000-05-21: Right now more than a few i386 targets /* FIXME: kettenis/2000-05-21: Right now more than a few i386 targets
define their own routines to manage the floating-point registers in define their own routines to manage the floating-point registers in
GDB's register array. Most (if not all) of these targets use the GDB's register array. Most (if not all) of these targets use the
format used by the "fsave" instruction in their communication with format used by the "fsave" instruction in their communication with
the OS. They should all be converted to use the routines below. */ the OS. They should all be converted to use the routines below. */
/* At fsave_offset[REGNO] you'll find the offset to the location in /* At fsave_offset[REGNUM] you'll find the offset to the location in
the data structure used by the "fsave" instruction where GDB the data structure used by the "fsave" instruction where GDB
register REGNO is stored. */ register REGNUM is stored. */
static int fsave_offset[] = static int fsave_offset[] =
{ {
@ -55,6 +57,32 @@ static int fsave_offset[] =
#define FSAVE_ADDR(fsave, regnum) (fsave + fsave_offset[regnum - FP0_REGNUM]) #define FSAVE_ADDR(fsave, regnum) (fsave + fsave_offset[regnum - FP0_REGNUM])
/* Fill register REGNUM in GDB's register array with the appropriate
value from *FSAVE. This function masks off any of the reserved
bits in *FSAVE. */
void
i387_supply_register (int regnum, char *fsave)
{
/* Most of the FPU control registers occupy only 16 bits in
the fsave area. Give those a special treatment. */
if (regnum >= FIRST_FPU_CTRL_REGNUM
&& regnum != FCOFF_REGNUM && regnum != FDOFF_REGNUM)
{
unsigned int val = *(unsigned short *) (FSAVE_ADDR (fsave, regnum));
if (regnum == FOP_REGNUM)
{
val &= ((1 << 11) - 1);
supply_register (regnum, (char *) &val);
}
else
supply_register (regnum, (char *) &val);
}
else
supply_register (regnum, FSAVE_ADDR (fsave, regnum));
}
/* Fill GDB's register array with the floating-point register values /* Fill GDB's register array with the floating-point register values
in *FSAVE. This function masks off any of the reserved in *FSAVE. This function masks off any of the reserved
bits in *FSAVE. */ bits in *FSAVE. */
@ -65,39 +93,21 @@ i387_supply_fsave (char *fsave)
int i; int i;
for (i = FP0_REGNUM; i <= LAST_FPU_CTRL_REGNUM; i++) for (i = FP0_REGNUM; i <= LAST_FPU_CTRL_REGNUM; i++)
{ i387_supply_register (i, fsave);
/* Most of the FPU control registers occupy only 16 bits in
the fsave area. Give those a special treatment. */
if (i >= FIRST_FPU_CTRL_REGNUM
&& i != FCOFF_REGNUM && i != FDOFF_REGNUM)
{
unsigned int val = *(unsigned short *) (FSAVE_ADDR (fsave, i));
if (i == FOP_REGNUM)
{
val &= ((1 << 11) - 1);
supply_register (i, (char *) &val);
}
else
supply_register (i, (char *) &val);
}
else
supply_register (i, FSAVE_ADDR (fsave, i));
}
} }
/* Fill register REGNO (if it is a floating-point register) in *FSAVE /* Fill register REGNUM (if it is a floating-point register) in *FSAVE
with the value in GDB's register array. If REGNO is -1, do this with the value in GDB's register array. If REGNUM is -1, do this
for all registers. This function doesn't touch any of the reserved for all registers. This function doesn't touch any of the reserved
bits in *FSAVE. */ bits in *FSAVE. */
void void
i387_fill_fsave (char *fsave, int regno) i387_fill_fsave (char *fsave, int regnum)
{ {
int i; int i;
for (i = FP0_REGNUM; i <= LAST_FPU_CTRL_REGNUM; i++) for (i = FP0_REGNUM; i <= LAST_FPU_CTRL_REGNUM; i++)
if (regno == -1 || regno == i) if (regnum == -1 || regnum == i)
{ {
/* Most of the FPU control registers occupy only 16 bits in /* Most of the FPU control registers occupy only 16 bits in
the fsave area. Give those a special treatment. */ the fsave area. Give those a special treatment. */
@ -125,9 +135,9 @@ i387_fill_fsave (char *fsave, int regno)
} }
/* At fxsave_offset[REGNO] you'll find the offset to the location in /* At fxsave_offset[REGNUM] you'll find the offset to the location in
the data structure used by the "fxsave" instruction where GDB the data structure used by the "fxsave" instruction where GDB
register REGNO is stored. */ register REGNUM is stored. */
static int fxsave_offset[] = static int fxsave_offset[] =
{ {
@ -223,18 +233,18 @@ i387_supply_fxsave (char *fxsave)
} }
} }
/* Fill register REGNO (if it is a floating-point or SSE register) in /* Fill register REGNUM (if it is a floating-point or SSE register) in
*FXSAVE with the value in GDB's register array. If REGNO is -1, do *FXSAVE with the value in GDB's register array. If REGNUM is -1, do
this for all registers. This function doesn't touch any of the this for all registers. This function doesn't touch any of the
reserved bits in *FXSAVE. */ reserved bits in *FXSAVE. */
void void
i387_fill_fxsave (char *fxsave, int regno) i387_fill_fxsave (char *fxsave, int regnum)
{ {
int i; int i;
for (i = FP0_REGNUM; i <= MXCSR_REGNUM; i++) for (i = FP0_REGNUM; i <= MXCSR_REGNUM; i++)
if (regno == -1 || regno == i) if (regnum == -1 || regnum == i)
{ {
/* Most of the FPU control registers occupy only 16 bits in /* Most of the FPU control registers occupy only 16 bits in
the fxsave area. Give those a special treatment. */ the fxsave area. Give those a special treatment. */

20
gdb/i387-nat.h
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@ -1,5 +1,5 @@
/* Native-dependent code for the i387. /* Native-dependent code for the i387.
Copyright 2000 Free Software Foundation, Inc. Copyright 2000, 2001 Free Software Foundation, Inc.
This file is part of GDB. This file is part of GDB.
@ -21,18 +21,24 @@
#ifndef I387_NAT_H #ifndef I387_NAT_H
#define I387_NAT_H #define I387_NAT_H
/* Fill register REGNO in GDB's register array with the appropriate
value from *FSAVE. This function masks off any of the reserved
bits in *FSAVE. */
extern void i387_supply_register (int regnum, char *fsave);
/* Fill GDB's register array with the floating-point register values /* Fill GDB's register array with the floating-point register values
in *FSAVE. This function masks off any of the reserved in *FSAVE. This function masks off any of the reserved
bits in *FSAVE. */ bits in *FSAVE. */
extern void i387_supply_fsave (char *fsave); extern void i387_supply_fsave (char *fsave);
/* Fill register REGNO (if it is a floating-point register) in *FSAVE /* Fill register REGNUM (if it is a floating-point register) in *FSAVE
with the value in GDB's register array. If REGNO is -1, do this with the value in GDB's register array. If REGNUM is -1, do this
for all registers. This function doesn't touch any of the reserved for all registers. This function doesn't touch any of the reserved
bits in *FSAVE. */ bits in *FSAVE. */
extern void i387_fill_fsave (char *fsave, int regno); extern void i387_fill_fsave (char *fsave, int regnum);
/* Fill GDB's register array with the floating-point and SSE register /* Fill GDB's register array with the floating-point and SSE register
values in *FXSAVE. This function masks off any of the reserved values in *FXSAVE. This function masks off any of the reserved
@ -40,11 +46,11 @@ extern void i387_fill_fsave (char *fsave, int regno);
extern void i387_supply_fxsave (char *fxsave); extern void i387_supply_fxsave (char *fxsave);
/* Fill register REGNO (if it is a floating-point or SSE register) in /* Fill register REGNUM (if it is a floating-point or SSE register) in
*FXSAVE with the value in GDB's register array. If REGNO is -1, do *FXSAVE with the value in GDB's register array. If REGNUM is -1, do
this for all registers. This function doesn't touch any of the this for all registers. This function doesn't touch any of the
reserved bits in *FXSAVE. */ reserved bits in *FXSAVE. */
extern void i387_fill_fxsave (char *fxsave, int regno); extern void i387_fill_fxsave (char *fxsave, int regnum);
#endif /* i387-nat.h */ #endif /* i387-nat.h */