Add x86 AVX support to gdbserver.

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

	* Makefile.in (clean): Updated.
	(i386-avx.o): New.
	(i386-avx.c): Likewise.
	(i386-avx-linux.o): Likewise.
	(i386-avx-linux.c): Likewise.
	(amd64-avx.o): Likewise.
	(amd64-avx.c): Likewise.
	(amd64-avx-linux.o): Likewise.
	(amd64-avx-linux.c): Likewise.

	* configure.srv (srv_i386_regobj): Add i386-avx.o.
	(srv_i386_linux_regobj): Add i386-avx-linux.o.
	(srv_amd64_regobj): Add amd64-avx.o.
	(srv_amd64_linux_regobj): Add amd64-avx-linux.o.
	(srv_i386_32bit_xmlfiles): Add i386/32bit-avx.xml.
	(srv_i386_64bit_xmlfiles): Add i386/64bit-avx.xml.
	(srv_i386_xmlfiles): Add i386/i386-avx.xml.
	(srv_amd64_xmlfiles): Add i386/amd64-avx.xml.
	(srv_i386_linux_xmlfiles): Add i386/i386-avx-linux.xml.
	(srv_amd64_linux_xmlfiles): Add i386/amd64-avx-linux.xml.

	* i387-fp.c: Include "i386-xstate.h".
	(i387_xsave): New.
	(i387_cache_to_xsave): Likewise.
	(i387_xsave_to_cache): Likewise.
	(x86_xcr0): Likewise.

	* i387-fp.h (i387_cache_to_xsave): Likewise.
	(i387_xsave_to_cache): Likewise.
	(x86_xcr0): Likewise.

	* linux-arm-low.c (target_regsets): Initialize nt_type to 0.
	* linux-crisv32-low.c (target_regsets): Likewise.
	* linux-m68k-low.c (target_regsets): Likewise.
	* linux-mips-low.c (target_regsets): Likewise.
	* linux-ppc-low.c (target_regsets): Likewise.
	* linux-s390-low.c (target_regsets): Likewise.
	* linux-sh-low.c (target_regsets): Likewise.
	* linux-sparc-low.c (target_regsets): Likewise.
	* linux-xtensa-low.c (target_regsets): Likewise.

	* linux-low.c: Include <sys/uio.h>.
	(regsets_fetch_inferior_registers): Support nt_type.
	(regsets_store_inferior_registers): Likewise.
	(linux_process_qsupported): New.
	(linux_target_ops): Add linux_process_qsupported.

	* linux-low.h (regset_info): Add nt_type.
	(linux_target_ops): Add process_qsupported.

	* linux-x86-low.c: Include "i386-xstate.h", "elf/common.h"
	and <sys/uio.h>.
	(init_registers_i386_avx_linux): New.
	(init_registers_amd64_avx_linux): Likewise.
	(xmltarget_i386_linux_no_xml): Likewise.
	(xmltarget_amd64_linux_no_xml): Likewise.
	(PTRACE_GETREGSET): Likewise.
	(PTRACE_SETREGSET): Likewise.
	(x86_fill_xstateregset): Likewise.
	(x86_store_xstateregset): Likewise.
	(use_xml): Likewise.
	(x86_linux_update_xmltarget): Likewise.
	(x86_linux_process_qsupported): Likewise.
	(target_regsets): Add NT_X86_XSTATE entry and Initialize nt_type.
	(x86_arch_setup): Don't call init_registers_amd64_linux nor
	init_registers_i386_linux here.  Call
	x86_linux_update_xmltarget.
	(the_low_target): Add x86_linux_process_qsupported.

	* server.c (handle_query): Call target_process_qsupported.

	* target.h (target_ops): Add process_qsupported.
	(target_process_qsupported): New.

1 files changed, 44 insertions, 11 deletions

diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 38af9d0..f159244 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -39,6 +39,7 @@
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/vfs.h>
+#include <sys/uio.h>
 #ifndef ELFMAG0
 /* Don't include <linux/elf.h> here.  If it got included by gdb_proc_service.h
    then ELFMAG0 will have been defined.  If it didn't get included by
@@ -2977,14 +2978,15 @@ regsets_fetch_inferior_registers (struct regcache *regcache)
   struct regset_info *regset;
   int saw_general_regs = 0;
   int pid;
+  struct iovec iov;
 
   regset = target_regsets;
 
   pid = lwpid_of (get_thread_lwp (current_inferior));
   while (regset->size >= 0)
     {
-      void *buf;
-      int res;
+      void *buf, *data;
+      int nt_type, res;
 
       if (regset->size == 0 || disabled_regsets[regset - target_regsets])
 	{
@@ -2993,10 +2995,21 @@ regsets_fetch_inferior_registers (struct regcache *regcache)
 	}
 
       buf = xmalloc (regset->size);
+
+      nt_type = regset->nt_type;
+      if (nt_type)
+	{
+	  iov.iov_base = buf;
+	  iov.iov_len = regset->size;
+	  data = (void *) &iov;
+	}
+      else
+	data = buf;
+
 #ifndef __sparc__
-      res = ptrace (regset->get_request, pid, 0, buf);
+      res = ptrace (regset->get_request, pid, nt_type, data);
 #else
-      res = ptrace (regset->get_request, pid, buf, 0);
+      res = ptrace (regset->get_request, pid, data, nt_type);
 #endif
       if (res < 0)
 	{
@@ -3034,14 +3047,15 @@ regsets_store_inferior_registers (struct regcache *regcache)
   struct regset_info *regset;
   int saw_general_regs = 0;
   int pid;
+  struct iovec iov;
 
   regset = target_regsets;
 
   pid = lwpid_of (get_thread_lwp (current_inferior));
   while (regset->size >= 0)
     {
-      void *buf;
-      int res;
+      void *buf, *data;
+      int nt_type, res;
 
       if (regset->size == 0 || disabled_regsets[regset - target_regsets])
 	{
@@ -3054,10 +3068,21 @@ regsets_store_inferior_registers (struct regcache *regcache)
       /* First fill the buffer with the current register set contents,
 	 in case there are any items in the kernel's regset that are
 	 not in gdbserver's regcache.  */
+
+      nt_type = regset->nt_type;
+      if (nt_type)
+	{
+	  iov.iov_base = buf;
+	  iov.iov_len = regset->size;
+	  data = (void *) &iov;
+	}
+      else
+	data = buf;
+
 #ifndef __sparc__
-      res = ptrace (regset->get_request, pid, 0, buf);
+      res = ptrace (regset->get_request, pid, nt_type, data);
 #else
-      res = ptrace (regset->get_request, pid, buf, 0);
+      res = ptrace (regset->get_request, pid, &iov, data);
 #endif
 
       if (res == 0)
@@ -3067,9 +3092,9 @@ regsets_store_inferior_registers (struct regcache *regcache)
 
 	  /* Only now do we write the register set.  */
 #ifndef __sparc__
-	  res = ptrace (regset->set_request, pid, 0, buf);
+	  res = ptrace (regset->set_request, pid, nt_type, data);
 #else
-	  res = ptrace (regset->set_request, pid, buf, 0);
+	  res = ptrace (regset->set_request, pid, data, nt_type);
 #endif
 	}
 
@@ -4133,6 +4158,13 @@ linux_core_of_thread (ptid_t ptid)
   return core;
 }
 
+static void
+linux_process_qsupported (const char *query)
+{
+  if (the_low_target.process_qsupported != NULL)
+    the_low_target.process_qsupported (query);
+}
+
 static struct target_ops linux_target_ops = {
   linux_create_inferior,
   linux_attach,
@@ -4176,7 +4208,8 @@ static struct target_ops linux_target_ops = {
 #else
   NULL,
 #endif
-  linux_core_of_thread
+  linux_core_of_thread,
+  linux_process_qsupported
 };
 
 static void