Lffpires vsx registers 2

gdb/Makefile.in

@@ -679,6 +679,7 @@ ALL_TARGET_OBS = \
 	arch/arm-get-next-pcs.o \
 	arch/arm-linux.o \
 	arch/i386.o \
+	arch/ppc-fbsd-common.o \
 	arch/ppc-linux-common.o \
 	arm-bsd-tdep.o \
 	arm-fbsd-tdep.o \
@@ -1414,6 +1415,7 @@ HFILES_NO_SRCDIR = \
 	arch/aarch64-insn.h \
 	arch/arm.h \
 	arch/i386.h \
+	arch/ppc-fbsd-common.h \
 	arch/ppc-linux-common.h \
 	arch/ppc-linux-tdesc.h \
 	cli/cli-cmds.h \

gdb/arch/ppc-fbsd-common.c

@@ -0,0 +1,59 @@
+/* Common target dependent code for FreeBSD on PPC systems.
+
+   Copyright (C) 2018 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "common-defs.h"
+#include "arch/ppc-fbsd-common.h"
+
+extern struct target_desc *tdesc_powerpc_32;
+extern struct target_desc *tdesc_powerpc_altivec32;
+extern struct target_desc *tdesc_powerpc_vsx32;
+extern struct target_desc *tdesc_powerpc_64;
+extern struct target_desc *tdesc_powerpc_altivec64;
+extern struct target_desc *tdesc_powerpc_vsx64;
+
+const struct target_desc *
+ppc_fbsd_match_description (struct ppc_fbsd_features features)
+{
+  struct target_desc *tdesc = NULL;
+
+  if (features.wordsize == 8)
+    {
+      if (features.vsx)
+	tdesc = tdesc_powerpc_vsx64;
+      else if (features.altivec)
+	tdesc = tdesc_powerpc_altivec64;
+      else
+	tdesc = tdesc_powerpc_64;
+    }
+  else
+    {
+      gdb_assert (features.wordsize == 4);
+
+      if (features.vsx)
+	tdesc = tdesc_powerpc_vsx32;
+      else if (features.altivec)
+	tdesc = tdesc_powerpc_altivec32;
+      else
+	tdesc = tdesc_powerpc_32;
+    }
+
+  gdb_assert (tdesc != NULL);
+
+  return tdesc;
+}

gdb/arch/ppc-fbsd-common.h

@@ -0,0 +1,86 @@
+/* Common target dependent code for FreeBSD on PPC systems.
+
+   Copyright (C) 2018 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef ARCH_PPC_FBSD_COMMON_H
+#define ARCH_PPC_FBSD_COMMON_H
+
+struct target_desc;
+
+#define PPC_FBSD_SIZEOF_GREGSET_32 148
+#define PPC_FBSD_SIZEOF_GREGSET_64 296
+#define PPC_FBSD_SIZEOF_FPREGSET 264
+
+/* PT_GETVRREGS returns data as defined in machine/pcb.h:
+   32 128-bit registers + 8 spare bytes + VRSAVE (4 bytes) + VSCR (4 bytes).  */
+#define PPC_FBSD_SIZEOF_VRREGSET (32*16 + 8 + 4 + 4)
+
+/* This is the layout of the POWER7 VSX registers and the way they overlap
+   with the existing FPR and VMX registers.
+
+                    VSR doubleword 0               VSR doubleword 1
+           ----------------------------------------------------------------
+   VSR[0]  |             FPR[0]            |                              |
+           ----------------------------------------------------------------
+   VSR[1]  |             FPR[1]            |                              |
+           ----------------------------------------------------------------
+           |              ...              |                              |
+           |              ...              |                              |
+           ----------------------------------------------------------------
+   VSR[30] |             FPR[30]           |                              |
+           ----------------------------------------------------------------
+   VSR[31] |             FPR[31]           |                              |
+           ----------------------------------------------------------------
+   VSR[32] |                             VR[0]                            |
+           ----------------------------------------------------------------
+   VSR[33] |                             VR[1]                            |
+           ----------------------------------------------------------------
+           |                              ...                             |
+           |                              ...                             |
+           ----------------------------------------------------------------
+   VSR[62] |                             VR[30]                           |
+           ----------------------------------------------------------------
+   VSR[63] |                             VR[31]                           |
+          ----------------------------------------------------------------
+
+   VSX has 64 128bit registers.  The first 32 registers overlap with
+   the FP registers (doubleword 0) and hence extend them with additional
+   64 bits (doubleword 1).  The other 32 regs overlap with the VMX
+   registers.  */
+#define PPC_FBSD_SIZEOF_VSXREGSET (32*8)
+
+/* Features used to determine the target description.  */
+struct ppc_fbsd_features
+{
+  unsigned int wordsize;
+  bool altivec;
+  bool vsx;
+};
+
+/* Base value for ppc_fbsd_features variables.  */
+const struct ppc_fbsd_features ppc_fbsd_no_features = {
+  0,
+  false,
+  false
+};
+
+/* Return a target description that matches FEATURES.  */
+const struct target_desc *
+ppc_fbsd_match_description (struct ppc_fbsd_features features);
+
+#endif /* ARCH_PPC_FBSD_COMMON_H */

gdb/configure.tgt

@@ -465,7 +465,8 @@ powerpc*-*-freebsd*)
 	# Target: FreeBSD/powerpc
 	gdb_target_obs="rs6000-tdep.o ppc-sysv-tdep.o ppc64-tdep.o \
 		        ppc-fbsd-tdep.o \
-			ravenscar-thread.o ppc-ravenscar-thread.o"
+			ravenscar-thread.o ppc-ravenscar-thread.o \
+			arch/ppc-fbsd-common.o"
 	;;
 
 powerpc-*-netbsd* | powerpc-*-knetbsd*-gnu)