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* config/i386/nm-i386sol2.h (CANNOT_STEP_HW_WATCHPOINTS): Define.

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* config/i386/tm-i386sol2.h (HAVE_I387_REGS):  Define.
	* i386v4-nat.c (supply_fpregset, fill_fpregset):  Add code
	to handle floating point registers if NUM_FREGS is not zero.
This commit is contained in:
Peter Schauer
2000-04-13 18:11:41 +00:00
parent db348f2745
commit 14164c30b6
4 changed files with 102 additions and 4 deletions
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88
gdb/i386v4-nat.c
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@@ -142,17 +142,65 @@ fill_gregset (gregsetp, regno)
#endif /* HAVE_GREGSET_T */
#if defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T)
#if defined (HAVE_FPREGSET_T)
/* Given a pointer to a floating point register set in /proc format
(fpregset_t *), unpack the register contents and supply them as gdb's
idea of the current floating point register values. */
/* FIXME: Assumes that fpregsetp contains an i387 FSAVE area. */
static const int freg_offset_map[] =
{
#if !defined(FPREGSET_FSAVE_OFFSET)
#define FPREGSET_FSAVE_OFFSET 0
#endif
FPREGSET_FSAVE_OFFSET + 28 + 0 * 10,
FPREGSET_FSAVE_OFFSET + 28 + 1 * 10,
FPREGSET_FSAVE_OFFSET + 28 + 2 * 10,
FPREGSET_FSAVE_OFFSET + 28 + 3 * 10,
FPREGSET_FSAVE_OFFSET + 28 + 4 * 10,
FPREGSET_FSAVE_OFFSET + 28 + 5 * 10,
FPREGSET_FSAVE_OFFSET + 28 + 6 * 10,
FPREGSET_FSAVE_OFFSET + 28 + 7 * 10,
FPREGSET_FSAVE_OFFSET + 0,
FPREGSET_FSAVE_OFFSET + 4,
FPREGSET_FSAVE_OFFSET + 8,
FPREGSET_FSAVE_OFFSET + 16,
FPREGSET_FSAVE_OFFSET + 12,
FPREGSET_FSAVE_OFFSET + 24,
FPREGSET_FSAVE_OFFSET + 20,
FPREGSET_FSAVE_OFFSET + 16
};
void
supply_fpregset (fpregsetp)
fpregset_t *fpregsetp;
{
/* FIXME: see m68k-tdep.c for an example, for the m68k. */
int regi;
if (NUM_FREGS == 0)
return;
for (regi = FP0_REGNUM; regi <= LAST_FPU_CTRL_REGNUM; regi++)
{
char tbuf[4];
ULONGEST tval;
char *from = (char *) fpregsetp + freg_offset_map[regi - FP0_REGNUM];
if (regi == FCS_REGNUM)
{
tval = extract_unsigned_integer (from, 4) & 0xffff;
store_unsigned_integer (tbuf, 4, tval);
supply_register (regi, tbuf);
}
else if (regi == FOP_REGNUM)
{
tval = (extract_unsigned_integer (from, 4) >> 16) & ((1 << 11) - 1);
store_unsigned_integer (tbuf, 4, tval);
supply_register (regi, tbuf);
}
else
supply_register (regi, from);
}
}
/* Given a pointer to a floating point register set in /proc format
@@ -165,9 +213,41 @@ fill_fpregset (fpregsetp, regno)
fpregset_t *fpregsetp;
int regno;
{
/* FIXME: see m68k-tdep.c for an example, for the m68k. */
int regi;
if (NUM_FREGS == 0)
return;
for (regi = FP0_REGNUM; regi <= LAST_FPU_CTRL_REGNUM; regi++)
{
if ((regno == -1) || (regno == regi))
{
char *to = (char *) fpregsetp + freg_offset_map[regi - FP0_REGNUM];
char *from = (char *) &registers[REGISTER_BYTE (regi)];
ULONGEST valto;
ULONGEST valfrom;
if (regi == FCS_REGNUM)
{
valto = extract_unsigned_integer (to, 4);
valfrom = extract_unsigned_integer (from, 4);
valto = (valto & ~0xffff) | (valfrom & 0xffff);
store_unsigned_integer (to, 4, valto);
}
else if (regi == FOP_REGNUM)
{
valto = extract_unsigned_integer (to, 4);
valfrom = extract_unsigned_integer (from, 4);
valto = (valto & 0xffff) | ((valfrom & ((1 << 11) - 1)) << 16);
store_unsigned_integer (to, 4, valto);
}
else
{
memcpy (to, from, REGISTER_RAW_SIZE (regi));
}
}
}
}
#endif /* defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T) */
#endif /* defined (HAVE_FPREGSET_T) */
#endif /* HAVE_SYS_PROCFS_H */