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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
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45
gdb/i386-tdep.c
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@@ -58,6 +58,7 @@
#include "features/i386/i386.c"
#include "features/i386/i386-avx.c"
#include "features/i386/i386-mmx.c"
/* Register names. */
@@ -2937,8 +2938,8 @@ i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
tdep->jb_pc_offset = 36;
/* DJGPP does not support the SSE registers. */
tdep->num_xmm_regs = 0;
set_gdbarch_num_regs (gdbarch, I386_NUM_GREGS + I387_NUM_REGS);
if (! tdesc_has_registers (info.target_desc))
tdep->tdesc = tdesc_i386_mmx;
/* Native compiler is GCC, which uses the SVR4 register numbering
even in COFF and STABS. See the comment in i386_gdbarch_init,
@@ -6649,13 +6650,12 @@ i386_validate_tdesc_p (struct gdbarch_tdep *tdep,
/* Get core registers. */
feature_core = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.core");
if (feature_core == NULL)
return 0;
/* Get SSE registers. */
feature_sse = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.sse");
if (feature_core == NULL || feature_sse == NULL)
return 0;
/* Try AVX registers. */
feature_avx = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.avx");
@@ -6664,6 +6664,10 @@ i386_validate_tdesc_p (struct gdbarch_tdep *tdep,
/* The XCR0 bits. */
if (feature_avx)
{
/* AVX register description requires SSE register description. */
if (!feature_sse)
return 0;
tdep->xcr0 = I386_XSTATE_AVX_MASK;
/* It may have been set by OSABI initialization function. */
@@ -6679,19 +6683,27 @@ i386_validate_tdesc_p (struct gdbarch_tdep *tdep,
tdep->ymm0h_regnum + i,
tdep->ymmh_register_names[i]);
}
else
else if (feature_sse)
tdep->xcr0 = I386_XSTATE_SSE_MASK;
else
{
tdep->xcr0 = I386_XSTATE_X87_MASK;
tdep->num_xmm_regs = 0;
}
num_regs = tdep->num_core_regs;
for (i = 0; i < num_regs; i++)
valid_p &= tdesc_numbered_register (feature_core, tdesc_data, i,
tdep->register_names[i]);
/* Need to include %mxcsr, so add one. */
num_regs += tdep->num_xmm_regs + 1;
for (; i < num_regs; i++)
valid_p &= tdesc_numbered_register (feature_sse, tdesc_data, i,
tdep->register_names[i]);
if (feature_sse)
{
/* Need to include %mxcsr, so add one. */
num_regs += tdep->num_xmm_regs + 1;
for (; i < num_regs; i++)
valid_p &= tdesc_numbered_register (feature_sse, tdesc_data, i,
tdep->register_names[i]);
}
return valid_p;
}
@@ -6732,15 +6744,7 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
and the SSE registers. This can be overridden for a specific ABI
by adjusting the members `st0_regnum', `mm0_regnum' and
`num_xmm_regs' of `struct gdbarch_tdep', otherwise the registers
will show up in the output of "info all-registers". Ideally we
should try to autodetect whether they are available, such that we
can prevent "info all-registers" from displaying registers that
aren't available.
NOTE: kevinb/2003-07-13: ... if it's a choice between printing
[the SSE registers] always (even when they don't exist) or never
showing them to the user (even when they do exist), I prefer the
former over the latter. */
will show up in the output of "info all-registers". */
tdep->st0_regnum = I386_ST0_REGNUM;
@@ -7039,6 +7043,7 @@ is \"default\"."),
/* Initialize the standard target descriptions. */
initialize_tdesc_i386 ();
initialize_tdesc_i386_mmx ();
initialize_tdesc_i386_avx ();
/* Tell remote stub that we support XML target description. */