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Support i386 without SSE.

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gdb/

2010-04-08  H.J. Lu  <hongjiu.lu@intel.com>

	* i386-linux-nat.c (have_ptrace_getfpxregs): Initialize to -1
	if HAVE_PTRACE_GETFPXREGS is defined.
	(i386_linux_read_description): Set have_ptrace_getfpxregs and
	have_ptrace_getregset to 0 if ptrace PTRACE_GETFPXREGS failed.

	* i386-linux-tdep.c: Include "features/i386/i386-mmx-linux.c"
	(i386_linux_core_read_description): Return tdesc_i386_mmx_linux
	if .reg-xfp section doesn't exist.
	(_initialize_i386_linux_tdep): Call initialize_tdesc_i386_mmx_linux.

	* i386-linux-tdep.h (tdesc_i386_mmx_linux): New.

	* i386-tdep.c: Include "features/i386/i386-mmx.c".
	(i386_go32_init_abi): Set tdesc to tdesc_i386_mmx.
	(i386_validate_tdesc_p): Make org.gnu.gdb.i386.sse optional.  Set
	xcr0 to I386_XSTATE_X87_MASK if SSE isn't available.
	(i386_gdbarch_init): Update comments.
	(_initialize_i386_tdep): Call initialize_tdesc_i386_mmx.

	* common/i386-xstate.h (I386_XSTATE_X87_MASK): New.

	* config/djgpp/fnchange.lst: Add i386 MMX XML files.

	* features/Makefile (i386/i386-mmx-expedite): New.
	(i386/i386-mmx-linux-expedite): Likewise.
	($(outdir)/i386/i386-mmx.dat): Likewise.
	($(outdir)/i386/i386-mmx-linux.dat): Likewise.

	* features/i386/i386-mmx-linux.c: New.
	* features/i386/i386-mmx-linux.xml: Likewise.
	* features/i386/i386-mmx.c: Likewise.
	* features/i386/i386-mmx.xml: Likewise.
	* regformats/i386/i386-mmx-linux.dat: Likewise.
	* regformats/i386/i386-mmx.dat: Likewise.

	* features/Makefile (WHICH): Add i386/i386-mmx and
	i386/i386-mmx-linux.

gdb/doc/

2010-04-08  H.J. Lu  <hongjiu.lu@intel.com>

	* gdb.texinfo (i386 Features): Make org.gnu.gdb.i386.avx
	optional.  Make org.gnu.gdb.i386.avx requires
	org.gnu.gdb.i386.avx.

gdb/gdbserver/

2010-04-08  H.J. Lu  <hongjiu.lu@intel.com>

	* Makefile.in (clean): Also remove i386-mmx.c i386-mmx-linux.c.
	(i386-mmx.o): New.
	(i386-mmx.c): Likewise.
	(i386-mmx-linux.o): Likewise.
	(i386-mmx-linux.c): Likewise.

	* configure.srv (srv_i386_regobj): Add i386-mmx.o.
	(srv_i386_linux_regobj): Add i386-mmx-linux.o.
	(srv_i386_xmlfiles): Add i386/i386-mmx.xml.
	(srv_i386_linux_xmlfiles): Add i386/i386-mmx-linux.xml.

	* linux-x86-low.c (init_registers_i386_mmx_linux): New.
	(x86_linux_update_xmltarget): Call init_registers_i386_mmx_linux
	and return if ptrace PTRACE_GETFPXREGS failed in 32bit.
This commit is contained in:
H.J. Lu
2010-04-08 22:32:38 +00:00
parent 080017175b
commit 3a13a53b43
20 changed files with 442 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
gdb/gdbserver/linux-x86-low.c
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@ -37,6 +37,8 @@ void init_registers_amd64_linux (void);
void init_registers_i386_avx_linux (void);
/* Defined in auto-generated file amd64-avx-linux.c. */
void init_registers_amd64_avx_linux (void);
/* Defined in auto-generated file i386-mmx-linux.c. */
void init_registers_i386_mmx_linux (void);
/* Backward compatibility for gdb without XML support. */
@ -828,19 +830,56 @@ static int use_xml;
static void
x86_linux_update_xmltarget (void)
{
int pid;
struct regset_info *regset;
static unsigned long long xcr0;
static int have_ptrace_getregset = -1;
#ifdef HAVE_PTRACE_GETFPXREGS
static int have_ptrace_getfpxregs = -1;
#endif
if (!current_inferior)
return;
pid = pid_of (get_thread_lwp (current_inferior));
#ifdef __x86_64__
if (num_xmm_registers == 8)
init_registers_i386_linux ();
else
init_registers_amd64_linux ();
#else
init_registers_i386_linux ();
{
# ifdef HAVE_PTRACE_GETFPXREGS
if (have_ptrace_getfpxregs == -1)
{
elf_fpxregset_t fpxregs;
if (ptrace (PTRACE_GETFPXREGS, pid, 0, (int) &fpxregs) < 0)
{
have_ptrace_getfpxregs = 0;
x86_xcr0 = I386_XSTATE_X87_MASK;
/* Disable PTRACE_GETFPXREGS. */
for (regset = target_regsets;
regset->fill_function != NULL; regset++)
if (regset->get_request == PTRACE_GETFPXREGS)
{
regset->size = 0;
break;
}
}
else
have_ptrace_getfpxregs = 1;
}
if (!have_ptrace_getfpxregs)
{
init_registers_i386_mmx_linux ();
return;
}
# endif
init_registers_i386_linux ();
}
#endif
if (!use_xml)
@ -863,10 +902,8 @@ x86_linux_update_xmltarget (void)
/* Check if XSAVE extended state is supported. */
if (have_ptrace_getregset == -1)
{
int pid = pid_of (get_thread_lwp (current_inferior));
unsigned long long xstateregs[I386_XSTATE_SSE_SIZE / sizeof (long long)];
struct iovec iov;
struct regset_info *regset;
iov.iov_base = xstateregs;
iov.iov_len = sizeof (xstateregs);