gdb/ChangeLog:

2013-09-13  Andreas Arnez  <arnez@linux.vnet.ibm.com>

	* NEWS: Mention TDB support.
	* features/s390-tdb.xml: New file.
	* features/s390-te-linux64.xml: New file.
	* features/s390x-te-linux64.xml: New file.
	* features/Makefile (WHICH): Add new tdescs above.
	(s390-te-linux64-expedite): Set.
	(s390x-te-linux64-expedite): Set.
	* features/s390-te-linux64.c: New file (generated).
	* features/s390x-te-linux64.c: New file (generated).
	* regformats/s390-te-linux64.dat: New file (generated).
	* regformats/s390x-te-linux64.dat: New file (generated).
	* s390-tdep.h (HWCAP_S390_HIGH_GPRS): Define.
	(HWCAP_S390_TE): Likewise.
	(S390_TDB_DWORD0_REGNUM): Likewise.
	(S390_TDB_DWORD0_REGNUM): Likewise.
	(S390_TDB_ABORT_CODE_REGNUM): Likewise.
	(S390_TDB_CONFLICT_TOKEN_REGNUM): Likewise.
	(S390_TDB_ATIA_REGNUM): Likewise.
	(S390_TDB_R0_REGNUM): Likewise.
	(S390_TDB_R1_REGNUM): Likewise.
	(S390_TDB_R2_REGNUM): Likewise.
	(S390_TDB_R3_REGNUM): Likewise.
	(S390_TDB_R4_REGNUM): Likewise.
	(S390_TDB_R5_REGNUM): Likewise.
	(S390_TDB_R6_REGNUM): Likewise.
	(S390_TDB_R7_REGNUM): Likewise.
	(S390_TDB_R8_REGNUM): Likewise.
	(S390_TDB_R9_REGNUM): Likewise.
	(S390_TDB_R10_REGNUM): Likewise.
	(S390_TDB_R11_REGNUM): Likewise.
	(S390_TDB_R12_REGNUM): Likewise.
	(S390_TDB_R13_REGNUM): Likewise.
	(S390_TDB_R14_REGNUM): Likewise.
	(S390_TDB_R15_REGNUM): Likewise.
	(S390_NUM_REGS): Increase.
	(S390_IS_TDBREGSET_REGNUM): New macro.
	(s390_regmap_tdb): Declare.
	(s390_sizeof_tdbregset): Define.
	(tdesc_s390_te_linux64): Declare.
	(tdesc_s390x_te_linux64): Likewise.
	* s390-tdep.c: Add includes for "auxv.h", <elf.h>,
	"features/s390-te-linux64.c", and "features/s390x-te-linux64.c".
	(s390_regmap_tdb): New regmap.
	(s390_supply_tdb_regset): New function.
	(s390_tdb_regset): New regset.
	(s390_linux64v2_regset_sections): Add TDB regset to list.
	(s390x_linux64v2_regset_sections): Likewise.
	(s390_regset_from_core_section): Recognize TDB core note section.
	(s390_core_read_description): If HWCAP indicates TE support,
	select tdesc_s390_te_linux64 or tdesc_s390_s390x_te_linux64.
	(s390_gdbarch_init): Handle TDB regset.
	(_initialize_s390_tdep): Initialize new tdescs.
	* s390-nat.c (HWCAP_S390_HIGH_GPRS): Remove define.
	(have_regset_tdb): New variable.
	(s390_native_supply): Support register invalidation.
	(fetch_regset): Invalidate registers if ptrace yields ENODATA.
	(check_regset): Treat ENODATA as "regset exists".
	(s390_linux_fetch_inferior_registers): Add TDB.
	(s390_read_description): Check for TDB existence and select
	appropriate tdesc.
	* gdbserver/Makefile.in (clean): Add removal of new makefile
	targets.
	(s390-te-linux64.c): New makefile target.
	(s390x-te-linux64.c): Likewise.
	* gdbserver/configure.srv (srv_regobj): Append new objects
	s390-te-linux64.o and s390x-te-linux64.o.
	(srv_xmlfiles): Append new files s390-te-linux64.xml,
	s390x-te-linux64.xml, and s390-tdb.xml.
	* gdbserver/linux-s390-low.c (init_registers_s390_te_linux64): New
	declaration.
	(tdesc_s390_te_linux64): Likewise.
	(init_registers_s390x_te_linux64): Likewise.
	(tdesc_s390x_te_linux64): Likewise.
	(s390_check_regset): Treat ENODATA as "regset exists".
	(s390_arch_setup): Add TDB regset support.
	(initialize_low_arch): Initialize registers for new tdescs.

gdb/doc/ChangeLog:
2013-09-13  Andreas Arnez  <arnez@linux.vnet.ibm.com>

	* gdb.texinfo (Decimal Floating Point format): Mention S/390.
	(Standard Target Features): Add new node to menu.
	(S/390 and System z Features): New node.

gdb/testsuite/ChangeLog:
2013-09-13  Andreas Arnez  <arnez@linux.vnet.ibm.com>

	* gdb.arch/s390-tdbregs.c: New file.
	* gdb.arch/s390-tdbregs.exp: New file.

1 files changed, 21 insertions, 4 deletions

diff --git a/gdb/gdbserver/linux-s390-low.c b/gdb/gdbserver/linux-s390-low.c
index 18d6370..a2df037 100644
--- a/gdb/gdbserver/linux-s390-low.c
+++ b/gdb/gdbserver/linux-s390-low.c
@@ -64,6 +64,10 @@ extern const struct target_desc *tdesc_s390_linux64v1;
 void init_registers_s390_linux64v2 (void);
 extern const struct target_desc *tdesc_s390_linux64v2;
 
+/* Defined in auto-generated file s390-te-linux64.c.  */
+void init_registers_s390_te_linux64 (void);
+extern const struct target_desc *tdesc_s390_te_linux64;
+
 /* Defined in auto-generated file s390x-linux64.c.  */
 void init_registers_s390x_linux64 (void);
 extern const struct target_desc *tdesc_s390x_linux64;
@@ -76,6 +80,10 @@ extern const struct target_desc *tdesc_s390x_linux64v1;
 void init_registers_s390x_linux64v2 (void);
 extern const struct target_desc *tdesc_s390x_linux64v2;
 
+/* Defined in auto-generated file s390x-te-linux64.c.  */
+void init_registers_s390x_te_linux64 (void);
+extern const struct target_desc *tdesc_s390x_te_linux64;
+
 #define s390_num_regs 52
 
 static int s390_regmap[] = {
@@ -391,10 +399,10 @@ s390_check_regset (int pid, int regset, int regsize)
   iov.iov_base = buf;
   iov.iov_len = regsize;
 
-  if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) < 0)
-    return 0;
-  else
+  if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) >= 0
+      || errno == ENODATA)
     return 1;
+  return 0;
 }
 
 #ifdef __s390x__
@@ -415,6 +423,7 @@ s390_arch_setup (void)
     = s390_check_regset (pid, NT_S390_LAST_BREAK, 8);
   int have_regset_system_call
     = s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4);
+  int have_regset_tdb = s390_check_regset (pid, NT_S390_TDB, 256);
 
   /* Update target_regsets according to available register sets.  */
   for (regset = s390_regsets; regset->fill_function != NULL; regset++)
@@ -427,6 +436,8 @@ s390_arch_setup (void)
 	case NT_S390_SYSTEM_CALL:
 	  regset->size = have_regset_system_call? 4 : 0;
 	  break;
+	case NT_S390_TDB:
+	  regset->size = have_regset_tdb ? 256 : 0;
 	default:
 	  break;
 	}
@@ -451,6 +462,8 @@ s390_arch_setup (void)
 
     if (pswm & 1)
       {
+	if (have_regset_tdb)
+	  tdesc = tdesc_s390x_te_linux64;
 	if (have_regset_system_call)
 	  tdesc = tdesc_s390x_linux64v2;
 	else if (have_regset_last_break)
@@ -465,7 +478,9 @@ s390_arch_setup (void)
       {
 	have_hwcap_s390_high_gprs = 1;
 
-	if (have_regset_system_call)
+	if (have_regset_tdb)
+	  tdesc = tdesc_s390_te_linux64;
+	else if (have_regset_system_call)
 	  tdesc = tdesc_s390_linux64v2;
 	else if (have_regset_last_break)
 	  tdesc = tdesc_s390_linux64v1;
@@ -575,9 +590,11 @@ initialize_low_arch (void)
   init_registers_s390_linux64 ();
   init_registers_s390_linux64v1 ();
   init_registers_s390_linux64v2 ();
+  init_registers_s390_te_linux64 ();
   init_registers_s390x_linux64 ();
   init_registers_s390x_linux64v1 ();
   init_registers_s390x_linux64v2 ();
+  init_registers_s390x_te_linux64 ();
 
   initialize_regsets_info (&s390_regsets_info);
 #ifdef __s390x__