Support amd64 AVX.

gdb/

2010-04-07  H.J. Lu  <hongjiu.lu@intel.com>

	* amd64-linux-nat.c: Include "regset.h", "elf/common.h",
	<sys/uio.h> and "i386-xstate.h".
	(PTRACE_GETREGSET): New.
	(PTRACE_SETREGSET): Likewise.
	(have_ptrace_getregset): Likewise.
	(amd64_linux_gregset64_reg_offset): Include 16 upper YMM
	registers.
	(amd64_linux_gregset32_reg_offset): Include 8 upper YMM
	registers.
	(amd64_linux_fetch_inferior_registers): Support PTRACE_GETFPREGS.
	(amd64_linux_store_inferior_registers): Likewise.
	(amd64_linux_read_description): Check and enable AVX target
	descriptions.

	* amd64-linux-tdep.c: Include "regset.h", "i386-linux-tdep.h"
	and "features/i386/amd64-avx-linux.c".
	(amd64_linux_regset_sections): New.
	(amd64_linux_core_read_description): Check and enable AVX
	target description.
	(amd64_linux_init_abi): Set xsave_xcr0_offset.  Call
	set_gdbarch_core_regset_sections.
	(_initialize_amd64_linux_tdep): Call
	initialize_tdesc_amd64_avx_linux.

	* amd64-linux-tdep.h (AMD64_LINUX_ORIG_RAX_REGNUM): Replace
	AMD64_MXCSR_REGNUM with AMD64_YMM15H_REGNUM.
	(tdesc_amd64_avx_linux): New.
	(amd64_linux_update_xstateregset): Likewise.

	* amd64-tdep.c: Include "features/i386/amd64-avx.c".
	(amd64_ymm_names): New.
	(amd64_ymmh_names): Likewise.
	(amd64_register_name): Likewise.
	(amd64_supply_xstateregset): Likewise.
	(amd64_collect_xstateregset): Likewise.
	(amd64_supply_xsave): Likewise.
	(amd64_collect_xsave): Likewise.
	(AMD64_NUM_REGS): Removed.
	(amd64_dwarf_reg_to_regnum): Return %ymmN register number for
	%xmmN if AVX is available.
	(amd64_pseudo_register_name): Support pseudo YMM registers.
	(amd64_regset_from_core_section): Support .reg-xstate section.
	(amd64_init_abi): Set ymmh_register_names, num_ymm_regs
	and ymm0h_regnum.  Call set_gdbarch_register_name.
	(amd64_init_abi): Call initialize_tdesc_amd64_avx.

	* amd64-tdep.h (amd64_regnum): Add AMD64_YMM0H_REGNUM and
	AMD64_YMM15H_REGNUM.
	(AMD64_NUM_REGS): New.
	(amd64_supply_xsave): Likewise.
	(amd64_collect_xsave): Likewise.
	(amd64_register_name): Removed.
	(amd64_register_type): Likewise.

gdb/testsuite/

2010-04-07  H.J. Lu  <hongjiu.lu@intel.com>

	* gdb.arch/i386-avx.c: New.
	* gdb.arch/i386-avx.exp: Likewise.

	* gdb.arch/i386-cpuid.h: Updated from gcc 4.4.

1 files changed, 25 insertions, 1 deletions

diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c
index 4ad6dc9..1205e31 100644
--- a/gdb/amd64-linux-tdep.c
+++ b/gdb/amd64-linux-tdep.c
@@ -28,8 +28,11 @@
 #include "symtab.h"
 #include "gdbtypes.h"
 #include "reggroups.h"
+#include "regset.h"
 #include "amd64-linux-tdep.h"
+#include "i386-linux-tdep.h"
 #include "linux-tdep.h"
+#include "i386-xstate.h"
 
 #include "gdb_string.h"
 
@@ -38,6 +41,7 @@
 #include "xml-syscall.h"
 
 #include "features/i386/amd64-linux.c"
+#include "features/i386/amd64-avx-linux.c"
 
 /* The syscall's XML filename for i386.  */
 #define XML_SYSCALL_FILENAME_AMD64 "syscalls/amd64-linux.xml"
@@ -45,6 +49,15 @@
 #include "record.h"
 #include "linux-record.h"
 
+/* Supported register note sections.  */
+static struct core_regset_section amd64_linux_regset_sections[] =
+{
+  { ".reg", 144, "general-purpose" },
+  { ".reg2", 512, "floating-point" },
+  { ".reg-xstate", I386_XSTATE_MAX_SIZE, "XSAVE extended state" },
+  { NULL, 0 }
+};
+
 /* Mapping between the general-purpose registers in `struct user'
    format and GDB's register cache layout.  */
 
@@ -1250,12 +1263,17 @@ amd64_linux_core_read_description (struct gdbarch *gdbarch,
 				  bfd *abfd)
 {
   asection *section = bfd_get_section_by_name (abfd, ".reg2");
+  uint64_t xcr0;
 
   if (section == NULL)
     return NULL;
 
   /* Linux/x86-64.  */
-  return tdesc_amd64_linux;
+  xcr0 = i386_linux_core_read_xcr0 (gdbarch, target, abfd);
+  if ((xcr0 & I386_XSTATE_AVX_MASK) == I386_XSTATE_AVX_MASK)
+    return tdesc_amd64_avx_linux;
+  else
+    return tdesc_amd64_linux;
 }
 
 static void
@@ -1297,6 +1315,8 @@ amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->sc_reg_offset = amd64_linux_sc_reg_offset;
   tdep->sc_num_regs = ARRAY_SIZE (amd64_linux_sc_reg_offset);
 
+  tdep->xsave_xcr0_offset = I386_LINUX_XSAVE_XCR0_OFFSET;
+
   /* GNU/Linux uses SVR4-style shared libraries.  */
   set_solib_svr4_fetch_link_map_offsets
     (gdbarch, svr4_lp64_fetch_link_map_offsets);
@@ -1318,6 +1338,9 @@ amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* GNU/Linux uses SVR4-style shared libraries.  */
   set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
 
+  /* Install supported register note sections.  */
+  set_gdbarch_core_regset_sections (gdbarch, amd64_linux_regset_sections);
+
   set_gdbarch_core_read_description (gdbarch,
 				     amd64_linux_core_read_description);
 
@@ -1517,4 +1540,5 @@ _initialize_amd64_linux_tdep (void)
 
   /* Initialize the Linux target description  */
   initialize_tdesc_amd64_linux ();
+  initialize_tdesc_amd64_avx_linux ();
 }