linux.h (MD_UNWIND_SUPPORT): Remove.

	gcc:
	* config/alpha/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/alpha/osf5.h (MD_UNWIND_SUPPORT): Remove.
	* config/alpha/vms.h (MD_UNWIND_SUPPORT): Remove.
	* config/bfin/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/bfin/uclinux.h (MD_UNWIND_SUPPORT): Remove.
	* config/i386/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/i386/linux64.h (MD_UNWIND_SUPPORT): Remove.
	* config/i386/sol2.h (MD_UNWIND_SUPPORT): Remove.
	* config/i386/mingw32.h (MD_UNWIND_SUPPORT): Remove.
	* config/ia64/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/ia64/vms.h (MD_UNWIND_SUPPORT): Remove.
	* config/m68k/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/mips/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/pa/pa-hpux.h (MD_UNWIND_SUPPORT): Remove.
	* config/pa/pa32-linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/rs6000/darwin.h (MD_UNWIND_SUPPORT): Remove.
	* config/rs6000/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/rs6000/linux64.h (MD_UNWIND_SUPPORT): Remove.
	* config/s390/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/s390/tpf.h (MD_UNWIND_SUPPORT): Remove.
	* config/sh/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/sparc/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/sparc/linux64.h (MD_UNWIND_SUPPORT): Remove.
	* config/sparc/sol2.h (MD_UNWIND_SUPPORT): Remove.
	* config/xtensa/linux.h (MD_UNWIND_SUPPORT): Remove.
	* config/alpha/linux-unwind.h: Move to ../libgcc/config/alpha.
	* config/alpha/osf5-unwind.h: Move to ../libgcc/config/alpha.
	* config/alpha/vms-unwind.h: Move to ../libgcc/config/alpha.
	* config/bfin/linux-unwind.h: Move to ../libgcc/config/bfin.
	* config/i386/linux-unwind.h: Move to ../libgcc/config/i386.
	* config/i386/sol2-unwind.h: Move to ../libgcc/config/i386.
	* config/i386/w32-unwind.h: Move to ../libgcc/config/i386.
	* config/ia64/linux-unwind.h: Move to ../libgcc/config/ia64.
	* config/ia64/vms-unwind.h: Move to ../libgcc/config/ia64.
	* config/m68k/linux-unwind.h: Move to ../libgcc/config/m68k.
	* config/mips/linux-unwind.h: Move to ../libgcc/config/mips.
	* config/pa/hpux-unwind.h: Move to ../libgcc/config/pa.
	* config/pa/linux-unwind.h: Move to ../libgcc/config/pa.
	* config/rs6000/darwin-unwind.h: Move to ../libgcc/config/rs6000.
	* config/rs6000/linux-unwind.h: Move to ../libgcc/config/rs6000.
	* config/s390/linux-unwind.h: Move to ../libgcc/config/s390.
	* config/s390/tpf-unwind.h: Move to ../libgcc/config/s390.
	* config/sh/linux-unwind.h: Move to ../libgcc/config/sh.
	* config/sparc/linux-unwind.h: Move to ../libgcc/config/sparc.
	* config/sparc/sol2-unwind.h: Move to ../libgcc/config/sparc.
	* config/xtensa/linux-unwind.h: Move to ../libgcc/config/xtensa.
	* config/darwin9.h (DARWIN_LIBSYSTEM_HAS_UNWIND): Remove.
	* system.h (MD_UNWIND_SUPPORT): Poison.
	* doc/tm.texi.in (Exception Handling, MD_UNWIND_SUPPORT): Remove.
	* doc/tm.texi: Regenerate.
	* unwind-dw2.c: Include md-unwind-support.h instead of
	MD_UNWIND_SUPPORT.
	* config/ia64/unwind-ia64.c: Likewise.
	* config/xtensa/unwind-dw2-xtensa.c: Likewise.

	libgcc:
	* config/alpha/linux-unwind.h: Move from ../gcc/config/alpha.
	* config/alpha/osf5-unwind.h: Move from ../gcc/config/alpha.
	* config/alpha/vms-unwind.h: Move from ../gcc/config/alpha.
	* config/bfin/linux-unwind.h: Move from ../gcc/config/bfin.
	* config/i386/linux-unwind.h: Move from ../gcc/config/i386.
	* config/i386/sol2-unwind.h: Move from ../gcc/config/i386.
	* config/i386/w32-unwind.h: Move from ../gcc/config/i386.
	Wrap in !__MINGW64__.
	* config/ia64/linux-unwind.h: Move from ../gcc/config/ia64.
	* config/ia64/vms-unwind.h: Move from ../gcc/config/ia64.
	* config/m68k/linux-unwind.h: Move from ../gcc/config/m68k.
	* config/mips/linux-unwind.h: Move from ../gcc/config/mips.
	* config/pa/hpux-unwind.h: Move from ../gcc/config/pa.
	* config/pa/linux-unwind.h: Move from ../gcc/config/pa.
	* config/rs6000/darwin-unwind.h: Move from ../gcc/config/rs6000.
	Wrap in !__LP64__.
	* config/rs6000/linux-unwind.h: Move from ../gcc/config/rs6000.
	* config/s390/linux-unwind.h: Move from ../gcc/config/s390.
	* config/s390/tpf-unwind.h: Move from ../gcc/config/s390.
	* config/sh/linux-unwind.h: Move from ../gcc/config/sh.
	* config/sparc/linux-unwind.h: Move from ../gcc/config/sparc.
	* config/sparc/sol2-unwind.h: Move from ../gcc/config/sparc.
	* config/xtensa/linux-unwind.h: Move from ../gcc/config/xtensa.
	* config/no-unwind.h: New file.
	* config.host (md_unwind_header): Document.
	Define.
	(alpha*-*-linux*, alpha*-dec-osf5.1*, alpha64-dec-*vms*,
	alpha*-dec-*vms*, bfin*-uclinux*, bfin*-linux-uclibc*,
	hppa*-*-linux*, hppa[12]*-*-hpux10*, hppa*64*-*-hpux11*,
	hppa[12]*-*-hpux11*): Set md_unwind_header.
	(i[34567]86-*-linux*): Handle i[34567]86-*-kopensolaris*-gnu.
	Set md_unwind_header.
	(x86_64-*-linux*, i[34567]86-*-solaris2*): Set md_unwind_header.
	(i[34567]86-*-cygwin*): Split from i[34567]86-*-mingw*.
	(i[34567]86-*-mingw*, ia64*-*-linux*, ia64-hp-*vms*,
	m68k-*-uclinux*, m68k-*-linux*, mips64*-*-linux*, mips*-*-linux*,
	powerpc-*-darwin*, powerpc-*-linux*, s390-*-linux*,
	s390x-*-linux*,  s390x-ibm-tpf*, sh*-*-linux*, sparc-*-linux*,
	sparc*-*-solaris2*, sparc64-*-linux*, xtensa*-*-linux*): Set
	md_unwind_header.
	* configure.ac: Link md-unwind-support.h to $md_unwind_header.
	* configure: Regenerate.

From-SVN: r174613

1 files changed, 158 insertions, 0 deletions

diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
new file mode 100644
index 00000000000..053c15558ca
--- /dev/null
+++ b/libgcc/config/m68k/linux-unwind.h
@@ -0,0 +1,158 @@
+/* DWARF2 EH unwinding support for Linux/m68k.
+   Copyright (C) 2006, 2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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, or (at your option)
+any later version.
+
+GCC 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* Do code reading to identify a signal frame, and set the frame
+   state data appropriately.  See unwind-dw2.c for the structs.
+   Don't use this at all if inhibit_libc is used.  */
+
+#ifndef inhibit_libc
+
+#include <signal.h>
+
+/* <sys/ucontext.h> is unfortunately broken right now.  */
+struct uw_ucontext {
+	unsigned long	  uc_flags;
+	struct ucontext  *uc_link;
+	stack_t		  uc_stack;
+	mcontext_t	  uc_mcontext;
+	unsigned long	  uc_filler[80];
+	__sigset_t	  uc_sigmask;
+};
+
+#define MD_FALLBACK_FRAME_STATE_FOR m68k_fallback_frame_state
+
+#ifdef __mcoldfire__
+#define M68K_FP_SIZE  8
+#else
+#define M68K_FP_SIZE  12
+#endif
+
+static _Unwind_Reason_Code
+m68k_fallback_frame_state (struct _Unwind_Context *context,
+			   _Unwind_FrameState *fs)
+{
+  unsigned short *pc = context->ra;
+  long cfa;
+
+  /* moveq #__NR_sigreturn,%d0; trap #0  */
+  if (pc[0] == 0x7077 && pc[1] == 0x4e40)
+    {
+      struct sigcontext *sc;
+
+      /* Context is passed as the 3rd argument.  */
+      sc = *(struct sigcontext **) (context->cfa + 8);
+
+      cfa = sc->sc_usp;
+      fs->regs.cfa_how = CFA_REG_OFFSET;
+      fs->regs.cfa_reg = 15;
+      fs->regs.cfa_offset = cfa - (long) context->cfa;
+
+      fs->regs.reg[0].how = REG_SAVED_OFFSET;
+      fs->regs.reg[0].loc.offset = (long) &sc->sc_d0 - cfa;
+      fs->regs.reg[1].how = REG_SAVED_OFFSET;
+      fs->regs.reg[1].loc.offset = (long) &sc->sc_d1 - cfa;
+      fs->regs.reg[8].how = REG_SAVED_OFFSET;
+      fs->regs.reg[8].loc.offset = (long) &sc->sc_a0 - cfa;
+      fs->regs.reg[9].how = REG_SAVED_OFFSET;
+      fs->regs.reg[9].loc.offset = (long) &sc->sc_a1 - cfa;
+
+#ifdef __uClinux__
+      fs->regs.reg[13].how = REG_SAVED_OFFSET;
+      fs->regs.reg[13].loc.offset = (long) &sc->sc_a5 - cfa;
+#endif
+
+      fs->regs.reg[24].how = REG_SAVED_OFFSET;
+      fs->regs.reg[24].loc.offset = (long) &sc->sc_pc - cfa;
+
+#ifndef __uClinux__
+      if (*(int *) sc->sc_fpstate)
+	{
+	  int *fpregs = (int *) sc->sc_fpregs;
+
+	  fs->regs.reg[16].how = REG_SAVED_OFFSET;
+	  fs->regs.reg[16].loc.offset = (long) &fpregs[0] - cfa;
+	  fs->regs.reg[17].how = REG_SAVED_OFFSET;
+	  fs->regs.reg[17].loc.offset = (long) &fpregs[M68K_FP_SIZE/4] - cfa;
+	}
+#elif defined __mcffpu__
+# error Implement this when uClinux kernel is ported to an FPU architecture
+#endif
+    }
+#ifdef __mcoldfire__
+  /* move.l #__NR_rt_sigreturn,%d0; trap #0 */
+  else if (pc[0] == 0x203c && pc[1] == 0x0000 &&
+	   pc[2] == 0x00ad && pc[3] == 0x4e40)
+#else
+  /* moveq #~__NR_rt_sigreturn,%d0; not.b %d0; trap #0 */
+  else if (pc[0] == 0x7052 && pc[1] == 0x4600 && pc[2] == 0x4e40)
+#endif
+    {
+      struct uw_ucontext *uc;
+      greg_t *gregs;
+      int i;
+
+      /* Context is passed as the 3rd argument.  */
+      uc = *(struct uw_ucontext **) (context->cfa + 8);
+
+      gregs = uc->uc_mcontext.gregs;
+      cfa = gregs[15];
+      fs->regs.cfa_how = CFA_REG_OFFSET;
+      fs->regs.cfa_reg = 15;
+      fs->regs.cfa_offset = cfa - (long) context->cfa;
+
+      /* register %d0-%d7/%a0-%a6  */
+      for (i = 0; i <= 14; i++)
+	{
+	  fs->regs.reg[i].how = REG_SAVED_OFFSET;
+	  fs->regs.reg[i].loc.offset = (long) &gregs[i] - cfa;
+	}
+
+      /* return address  */
+      fs->regs.reg[24].how = REG_SAVED_OFFSET;
+      fs->regs.reg[24].loc.offset = (long) &gregs[16] - cfa;
+
+#define uc_fpstate      uc_filler[0]
+
+      if (uc->uc_fpstate)
+	{
+	  long fpregs = (long) uc->uc_mcontext.fpregs.f_fpregs;
+
+	  /* register %fp0-%fp7  */
+	  for (i = 16; i <= 23; i++)
+	    {
+	      fs->regs.reg[i].how = REG_SAVED_OFFSET;
+	      fs->regs.reg[i].loc.offset = fpregs - cfa;
+	      fpregs += M68K_FP_SIZE;
+	    }
+	}
+    }
+  else
+    return _URC_END_OF_STACK;
+
+  fs->retaddr_column = 24;
+  fs->signal_frame = 1;
+
+  return _URC_NO_REASON;
+}
+#endif /* ifdef inhibit_libc  */