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2002-06-07 Michal Ludvig <mludvig@suse.cz>

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* x86-64-linux-nat.c (x86_64_fxsave_offset): New.
	(supply_fpregset, fill_fpregset): Don't call i387_*_fxsave,
	better do the things actually here.
	* x86-64-tdep.c (x86_64_register_name2nr): New.
	(x86_64_register_name): Renamed to x86_64_register_nr2name.
	(x86_64_gdbarch_init): Respect the above change.
	* x86-64-tdep.h (x86_64_register_name2nr)
	(x86_64_register_nr2name): Add prototypes.
	* config/i386/x86-64linux.mt (TDEPFILES): Remove i387-tdep.o.
This commit is contained in:
Michal Ludvig
2002-06-07 16:11:10 +00:00
parent eb95bb9a4e
commit 8dda97708f
5 changed files with 97 additions and 21 deletions
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73
gdb/x86-64-linux-nat.c
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@@ -25,7 +25,6 @@
#include "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
#include "i387-tdep.h"
#include "gdb_assert.h"
#include "x86-64-tdep.h"
@@ -195,23 +194,73 @@ store_regs (int tid, int regno)
/* Transfering floating-point registers between GDB, inferiors and cores. */
/* Fill GDB's register array with the floating-point register values in
*FPREGSETP. */
void
supply_fpregset (elf_fpregset_t * fpregsetp)
static void *
x86_64_fxsave_offset (elf_fpregset_t * fxsave, int regnum)
{
i387_supply_fxsave ((char *) fpregsetp);
char *reg_name;
int reg_index;
gdb_assert (x86_64_num_gregs - 1 < regnum && regnum < x86_64_num_regs);
reg_name = x86_64_register_nr2name (regnum);
if (reg_name[0] == 's' && reg_name[1] == 't')
{
reg_index = reg_name[2] - '0';
return &fxsave->st_space[reg_index * 2];
}
if (reg_name[0] == 'x' && reg_name[1] == 'm' && reg_name[2] == 'm')
{
reg_index = reg_name[3] - '0';
return &fxsave->xmm_space[reg_index * 4];
}
if (strcmp (reg_name, "mxcsr") == 0)
return &fxsave->mxcsr;
return NULL;
}
/* Fill register REGNO (if it is a floating-point register) in
*FPREGSETP with the value in GDB's register array. If REGNO is -1,
do this for all registers. */
/* Fill GDB's register array with the floating-point and SSE register
values in *FXSAVE. This function masks off any of the reserved
bits in *FXSAVE. */
void
fill_fpregset (elf_fpregset_t * fpregsetp, int regno)
supply_fpregset (elf_fpregset_t * fxsave)
{
i387_fill_fxsave ((char *) fpregsetp, regno);
int i, reg_st0, reg_mxcsr;
reg_st0 = x86_64_register_name2nr ("st0");
reg_mxcsr = x86_64_register_name2nr ("mxcsr");
gdb_assert (reg_st0 > 0 && reg_mxcsr > reg_st0);
for (i = reg_st0; i <= reg_mxcsr; i++)
supply_register (i, x86_64_fxsave_offset (fxsave, i));
}
/* Fill register REGNUM (if it is a floating-point or SSE register) in
*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
reserved bits in *FXSAVE. */
void
fill_fpregset (elf_fpregset_t * fxsave, int regnum)
{
int i, last_regnum = MXCSR_REGNUM;
void *ptr;
if (gdbarch_tdep (current_gdbarch)->num_xmm_regs == 0)
last_regnum = FOP_REGNUM;
for (i = FP0_REGNUM; i <= last_regnum; i++)
if (regnum == -1 || regnum == i)
{
ptr = x86_64_fxsave_offset (fxsave, i);
if (ptr)
regcache_collect (i, ptr);
}
}
/* Fetch all floating-point registers from process/thread TID and store