* doc/tm.texi (MD_UNWIND_SUPPORT): Document.

	(MD_FALLBACK_FRAME_STATE_FOR): Update.
	* unwind-dw2.c (MD_UNWIND_SUPPORT): #include if defined.
	(uw_frame_state_for): Adjust MD_FALLBACK_FRAME_STATE_FOR invocation.
	(MD_FROB_UPDATE_CONTEXT): Remove default.
	(uw_update_context_1): Instead #ifdef invocation.
	* config/ia64/unwind-ia64.c (MD_UNWIND_SUPPORT): #include if defined.
	(uw_frame_state_for): Adjust MD_FALLBACK_FRAME_STATE_FOR invocation.
	* config/alpha/gnu.h (MD_FALLBACK_FRAME_STATE_FOR): Don't undef.
	(MD_UNWIND_SUPPORT): Undefine this instead.
	* config/i386/gnu.h: Likewise.
	* config/alpha/linux-unwind.h: New file, macro converted to
	function, extracted from..
	* config/alpha/linux.h (MD_FALLBACK_FRAME_STATE_FOR): ..this.
	(MD_UNWIND_SUPPORT): Define.
	* config/alpha/vms-unwind.h, config/alpha/vms.h: Likewise.
	* config/i386/linux-unwind.h, config/i386/linux.h,
	config/i386/linux64.h: Likewise.
	* config/ia64/linux-unwind.h, config/ia64/linux.h: Likewise.
	MD_HANDLE_UNWABI too.
	* config/mips/linux-unwind.h, config/mips/linux.h: Likewise.
	* config/pa/linux-unwind.h, config/pa/pa32-linux.h: Likewise.
	* config/rs6000/darwin-unwind.h, config/rs6000/darwin.h: Likewise.
	* config/s390/linux-unwind.h, config/s390/linux.h: Likewise.
	* config/sparc/linux-unwind.h, config/sparc/linux.h,
	config/sparc/linux64.h: Likewise.
	* config/sh/linux-unwind.h, config/sh/linux.h: Likewise, but merge
	SH_FALLBACK_FRAME_FLOAT_STATE into sh_fallback_frame_state.
	* config/rs6000/linux-unwind.h, config/rs6000/linux.h,
	config/rs6000/linux64.h: Likewise.  Split out get_sigcontext
	function.  Use ARG_POINTER_REGNUM for 32-bit temp reg too.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87167 138bc75d-0d04-0410-961f-82ee72b054a4

4 files changed, 168 insertions, 195 deletions

diff --git a/gcc/config/i386/gnu.h b/gcc/config/i386/gnu.h
index cc9994bcaed..ce80c9821fd 100644
--- a/gcc/config/i386/gnu.h
+++ b/gcc/config/i386/gnu.h
@@ -40,4 +40,4 @@
    %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
 
 /* FIXME: Is a Hurd-specific fallback mechanism necessary?  */
-#undef MD_FALLBACK_FRAME_STATE_FOR
+#undef MD_UNWIND_SUPPORT
diff --git a/gcc/config/i386/linux-unwind.h b/gcc/config/i386/linux-unwind.h
new file mode 100644
index 00000000000..ecbce1d337c
--- /dev/null
+++ b/gcc/config/i386/linux-unwind.h
@@ -0,0 +1,165 @@
+/* DWARF2 EH unwinding support for AMD x86-64 and x86.
+   Copyright (C) 2004 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 2, 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.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* 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
+
+#ifdef __x86_64__
+
+#include <signal.h>
+#include <sys/ucontext.h>
+
+#define MD_FALLBACK_FRAME_STATE_FOR x86_64_fallback_frame_state
+
+static _Unwind_Reason_Code
+x86_64_fallback_frame_state (struct _Unwind_Context *context,
+			     _Unwind_FrameState *fs)
+{
+  unsigned char *pc = context->ra;
+  struct sigcontext *sc;
+  long new_cfa;
+
+  /* movq __NR_rt_sigreturn, %rax ; syscall  */
+  if (*(unsigned char *)(pc+0) == 0x48
+      && *(unsigned long *)(pc+1) == 0x050f0000000fc0c7)
+    {
+      struct ucontext *uc_ = context->cfa;
+      sc = (struct sigcontext *) &uc_->uc_mcontext;
+    }
+  else
+    return _URC_END_OF_STACK;
+
+  new_cfa = sc->rsp;
+  fs->cfa_how = CFA_REG_OFFSET;
+  /* Register 7 is rsp  */
+  fs->cfa_reg = 7;
+  fs->cfa_offset = new_cfa - (long) context->cfa;
+
+  /* The SVR4 register numbering macros aren't usable in libgcc.  */
+  fs->regs.reg[0].how = REG_SAVED_OFFSET;
+  fs->regs.reg[0].loc.offset = (long)&sc->rax - new_cfa;
+  fs->regs.reg[1].how = REG_SAVED_OFFSET;
+  fs->regs.reg[1].loc.offset = (long)&sc->rdx - new_cfa;
+  fs->regs.reg[2].how = REG_SAVED_OFFSET;
+  fs->regs.reg[2].loc.offset = (long)&sc->rcx - new_cfa;
+  fs->regs.reg[3].how = REG_SAVED_OFFSET;
+  fs->regs.reg[3].loc.offset = (long)&sc->rbx - new_cfa;
+  fs->regs.reg[4].how = REG_SAVED_OFFSET;
+  fs->regs.reg[4].loc.offset = (long)&sc->rsi - new_cfa;
+  fs->regs.reg[5].how = REG_SAVED_OFFSET;
+  fs->regs.reg[5].loc.offset = (long)&sc->rdi - new_cfa;
+  fs->regs.reg[6].how = REG_SAVED_OFFSET;
+  fs->regs.reg[6].loc.offset = (long)&sc->rbp - new_cfa;
+  fs->regs.reg[8].how = REG_SAVED_OFFSET;
+  fs->regs.reg[8].loc.offset = (long)&sc->r8 - new_cfa;
+  fs->regs.reg[9].how = REG_SAVED_OFFSET;
+  fs->regs.reg[9].loc.offset = (long)&sc->r9 - new_cfa;
+  fs->regs.reg[10].how = REG_SAVED_OFFSET;
+  fs->regs.reg[10].loc.offset = (long)&sc->r10 - new_cfa;
+  fs->regs.reg[11].how = REG_SAVED_OFFSET;
+  fs->regs.reg[11].loc.offset = (long)&sc->r11 - new_cfa;
+  fs->regs.reg[12].how = REG_SAVED_OFFSET;
+  fs->regs.reg[12].loc.offset = (long)&sc->r12 - new_cfa;
+  fs->regs.reg[13].how = REG_SAVED_OFFSET;
+  fs->regs.reg[13].loc.offset = (long)&sc->r13 - new_cfa;
+  fs->regs.reg[14].how = REG_SAVED_OFFSET;
+  fs->regs.reg[14].loc.offset = (long)&sc->r14 - new_cfa;
+  fs->regs.reg[15].how = REG_SAVED_OFFSET;
+  fs->regs.reg[15].loc.offset = (long)&sc->r15 - new_cfa;
+  fs->regs.reg[16].how = REG_SAVED_OFFSET;
+  fs->regs.reg[16].loc.offset = (long)&sc->rip - new_cfa;
+  fs->retaddr_column = 16;
+  return _URC_NO_REASON;
+}
+
+#else /* ifdef __x86_64__  */
+
+/* There's no sys/ucontext.h for glibc 2.0, so no
+   signal-turned-exceptions for them.  There's also no configure-run for
+   the target, so we can't check on (e.g.) HAVE_SYS_UCONTEXT_H.  Using the
+   target libc version macro should be enough.  */
+#if !(__GLIBC__ == 2 && __GLIBC_MINOR__ == 0)
+
+#include <signal.h>
+#include <sys/ucontext.h>
+
+#define MD_FALLBACK_FRAME_STATE_FOR x86_fallback_frame_state
+
+static _Unwind_Reason_Code
+x86_fallback_frame_state (struct _Unwind_Context *context,
+			  _Unwind_FrameState *fs)
+{
+  unsigned char *pc = context->ra;
+  struct sigcontext *sc;
+  long new_cfa;
+
+  /* popl %eax ; movl $__NR_sigreturn,%eax ; int $0x80  */
+  if (*(unsigned short *)(pc+0) == 0xb858
+      && *(unsigned int *)(pc+2) == 119
+      && *(unsigned short *)(pc+6) == 0x80cd)
+    sc = context->cfa + 4;
+  /* movl $__NR_rt_sigreturn,%eax ; int $0x80  */
+  else if (*(unsigned char *)(pc+0) == 0xb8
+	   && *(unsigned int *)(pc+1) == 173
+	   && *(unsigned short *)(pc+5) == 0x80cd)
+    {
+      struct rt_sigframe {
+	int sig;
+	struct siginfo *pinfo;
+	void *puc;
+	struct siginfo info;
+	struct ucontext uc;
+      } *rt_ = context->cfa;
+      sc = (struct sigcontext *) &rt_->uc.uc_mcontext;
+    }
+  else
+    return _URC_END_OF_STACK;
+
+  new_cfa = sc->esp;
+  fs->cfa_how = CFA_REG_OFFSET;
+  fs->cfa_reg = 4;
+  fs->cfa_offset = new_cfa - (long) context->cfa;
+
+  /* The SVR4 register numbering macros aren't usable in libgcc.  */
+  fs->regs.reg[0].how = REG_SAVED_OFFSET;
+  fs->regs.reg[0].loc.offset = (long)&sc->eax - new_cfa;
+  fs->regs.reg[3].how = REG_SAVED_OFFSET;
+  fs->regs.reg[3].loc.offset = (long)&sc->ebx - new_cfa;
+  fs->regs.reg[1].how = REG_SAVED_OFFSET;
+  fs->regs.reg[1].loc.offset = (long)&sc->ecx - new_cfa;
+  fs->regs.reg[2].how = REG_SAVED_OFFSET;
+  fs->regs.reg[2].loc.offset = (long)&sc->edx - new_cfa;
+  fs->regs.reg[6].how = REG_SAVED_OFFSET;
+  fs->regs.reg[6].loc.offset = (long)&sc->esi - new_cfa;
+  fs->regs.reg[7].how = REG_SAVED_OFFSET;
+  fs->regs.reg[7].loc.offset = (long)&sc->edi - new_cfa;
+  fs->regs.reg[5].how = REG_SAVED_OFFSET;
+  fs->regs.reg[5].loc.offset = (long)&sc->ebp - new_cfa;
+  fs->regs.reg[8].how = REG_SAVED_OFFSET;
+  fs->regs.reg[8].loc.offset = (long)&sc->eip - new_cfa;
+  fs->retaddr_column = 8;
+  return _URC_NO_REASON;
+}
+#endif /* not glibc 2.0 */
+#endif /* ifdef __x86_64__  */
+#endif /* ifdef inhibit_libc  */
diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
index 08b859ac310..e31c5114e93 100644
--- a/gcc/config/i386/linux.h
+++ b/gcc/config/i386/linux.h
@@ -181,72 +181,4 @@ Boston, MA 02111-1307, USA.  */
 #undef NEED_INDICATE_EXEC_STACK
 #define NEED_INDICATE_EXEC_STACK 1
 
-/* Do code reading to identify a signal frame, and set the frame
-   state data appropriately.  See unwind-dw2.c for the structs.  */
-
-#ifdef IN_LIBGCC2
-/* There's no sys/ucontext.h for glibc 2.0, so no
-   signal-turned-exceptions for them.  There's also no configure-run for
-   the target, so we can't check on (e.g.) HAVE_SYS_UCONTEXT_H.  Using the
-   target libc version macro should be enough.  */
-#if !(__GLIBC__ == 2 && __GLIBC_MINOR__ == 0)
-#include <signal.h>
-#include <sys/ucontext.h>
-
-#define REG_NAME(reg) reg
-
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS)		\
-  do {									\
-    unsigned char *pc_ = (CONTEXT)->ra;					\
-    struct sigcontext *sc_;						\
-    long new_cfa_;							\
-									\
-    /* popl %eax ; movl $__NR_sigreturn,%eax ; int $0x80  */		\
-    if (*(unsigned short *)(pc_+0) == 0xb858				\
-	&& *(unsigned int *)(pc_+2) == 119				\
-	&& *(unsigned short *)(pc_+6) == 0x80cd)			\
-      sc_ = (CONTEXT)->cfa + 4;						\
-    /* movl $__NR_rt_sigreturn,%eax ; int $0x80  */			\
-    else if (*(unsigned char *)(pc_+0) == 0xb8				\
-	     && *(unsigned int *)(pc_+1) == 173				\
-	     && *(unsigned short *)(pc_+5) == 0x80cd)			\
-      {									\
-	struct rt_sigframe {						\
-	  int sig;							\
-	  struct siginfo *pinfo;					\
-	  void *puc;							\
-	  struct siginfo info;						\
-	  struct ucontext uc;						\
-	} *rt_ = (CONTEXT)->cfa;					\
-	sc_ = (struct sigcontext *) &rt_->uc.uc_mcontext;		\
-      }									\
-    else								\
-      break;								\
-									\
-    new_cfa_ = sc_->REG_NAME(esp);						\
-    (FS)->cfa_how = CFA_REG_OFFSET;					\
-    (FS)->cfa_reg = 4;							\
-    (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa;		\
-									\
-    /* The SVR4 register numbering macros aren't usable in libgcc.  */	\
-    (FS)->regs.reg[0].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[0].loc.offset = (long)&sc_->REG_NAME(eax) - new_cfa_;	\
-    (FS)->regs.reg[3].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[3].loc.offset = (long)&sc_->REG_NAME(ebx) - new_cfa_;	\
-    (FS)->regs.reg[1].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[1].loc.offset = (long)&sc_->REG_NAME(ecx) - new_cfa_;	\
-    (FS)->regs.reg[2].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[2].loc.offset = (long)&sc_->REG_NAME(edx) - new_cfa_;	\
-    (FS)->regs.reg[6].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[6].loc.offset = (long)&sc_->REG_NAME(esi) - new_cfa_;	\
-    (FS)->regs.reg[7].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[7].loc.offset = (long)&sc_->REG_NAME(edi) - new_cfa_;	\
-    (FS)->regs.reg[5].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[5].loc.offset = (long)&sc_->REG_NAME(ebp) - new_cfa_;	\
-    (FS)->regs.reg[8].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[8].loc.offset = (long)&sc_->REG_NAME(eip) - new_cfa_;	\
-    (FS)->retaddr_column = 8;						\
-    goto SUCCESS;							\
-  } while (0)
-#endif /* not glibc 2.0 */
-#endif /* IN_LIBGCC2 */
+#define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h"
diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
index 98536c19bd3..4838cf8fa8e 100644
--- a/gcc/config/i386/linux64.h
+++ b/gcc/config/i386/linux64.h
@@ -69,128 +69,4 @@ Boston, MA 02111-1307, USA.  */
 #undef NEED_INDICATE_EXEC_STACK
 #define NEED_INDICATE_EXEC_STACK 1
 
-/* 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
-#ifdef IN_LIBGCC2
-#include <signal.h>
-#include <sys/ucontext.h>
-#endif
-
-#ifdef __x86_64__
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS)		\
-  do {									\
-    unsigned char *pc_ = (CONTEXT)->ra;					\
-    struct sigcontext *sc_;						\
-    long new_cfa_;							\
-									\
-    /* movq __NR_rt_sigreturn, %rax ; syscall  */			\
-    if (*(unsigned char *)(pc_+0) == 0x48				\
-	&& *(unsigned long *)(pc_+1) == 0x050f0000000fc0c7)		\
-      {									\
-	struct ucontext *uc_ = (CONTEXT)->cfa;				\
-	sc_ = (struct sigcontext *) &uc_->uc_mcontext;			\
-      }									\
-    else								\
-      break;								\
-									\
-    new_cfa_ = sc_->rsp;						\
-    (FS)->cfa_how = CFA_REG_OFFSET;					\
-    /* Register 7 is rsp  */						\
-    (FS)->cfa_reg = 7;							\
-    (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa;		\
-									\
-    /* The SVR4 register numbering macros aren't usable in libgcc.  */	\
-    (FS)->regs.reg[0].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[0].loc.offset = (long)&sc_->rax - new_cfa_;		\
-    (FS)->regs.reg[1].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[1].loc.offset = (long)&sc_->rdx - new_cfa_;		\
-    (FS)->regs.reg[2].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[2].loc.offset = (long)&sc_->rcx - new_cfa_;		\
-    (FS)->regs.reg[3].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[3].loc.offset = (long)&sc_->rbx - new_cfa_;		\
-    (FS)->regs.reg[4].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[4].loc.offset = (long)&sc_->rsi - new_cfa_;		\
-    (FS)->regs.reg[5].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[5].loc.offset = (long)&sc_->rdi - new_cfa_;		\
-    (FS)->regs.reg[6].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[6].loc.offset = (long)&sc_->rbp - new_cfa_;		\
-    (FS)->regs.reg[8].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[8].loc.offset = (long)&sc_->r8 - new_cfa_;		\
-    (FS)->regs.reg[9].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[9].loc.offset = (long)&sc_->r9 - new_cfa_;		\
-    (FS)->regs.reg[10].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[10].loc.offset = (long)&sc_->r10 - new_cfa_;		\
-    (FS)->regs.reg[11].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[11].loc.offset = (long)&sc_->r11 - new_cfa_;		\
-    (FS)->regs.reg[12].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[12].loc.offset = (long)&sc_->r12 - new_cfa_;		\
-    (FS)->regs.reg[13].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[13].loc.offset = (long)&sc_->r13 - new_cfa_;		\
-    (FS)->regs.reg[14].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[14].loc.offset = (long)&sc_->r14 - new_cfa_;		\
-    (FS)->regs.reg[15].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[15].loc.offset = (long)&sc_->r15 - new_cfa_;		\
-    (FS)->regs.reg[16].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[16].loc.offset = (long)&sc_->rip - new_cfa_;		\
-    (FS)->retaddr_column = 16;						\
-    goto SUCCESS;							\
-  } while (0)
-#else /* ifdef __x86_64__  */
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS)		\
-  do {									\
-    unsigned char *pc_ = (CONTEXT)->ra;					\
-    struct sigcontext *sc_;						\
-    long new_cfa_;							\
-									\
-    /* popl %eax ; movl $__NR_sigreturn,%eax ; int $0x80  */		\
-    if (*(unsigned short *)(pc_+0) == 0xb858				\
-	&& *(unsigned int *)(pc_+2) == 119				\
-	&& *(unsigned short *)(pc_+6) == 0x80cd)			\
-      sc_ = (CONTEXT)->cfa + 4;						\
-    /* movl $__NR_rt_sigreturn,%eax ; int $0x80  */			\
-    else if (*(unsigned char *)(pc_+0) == 0xb8				\
-	     && *(unsigned int *)(pc_+1) == 173				\
-	     && *(unsigned short *)(pc_+5) == 0x80cd)			\
-      {									\
-	struct rt_sigframe {						\
-	  int sig;							\
-	  struct siginfo *pinfo;					\
-	  void *puc;							\
-	  struct siginfo info;						\
-	  struct ucontext uc;						\
-	} *rt_ = (CONTEXT)->cfa;					\
-	sc_ = (struct sigcontext *) &rt_->uc.uc_mcontext;		\
-      }									\
-    else								\
-      break;								\
-									\
-    new_cfa_ = sc_->esp;						\
-    (FS)->cfa_how = CFA_REG_OFFSET;					\
-    (FS)->cfa_reg = 4;							\
-    (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa;		\
-									\
-    /* The SVR4 register numbering macros aren't usable in libgcc.  */	\
-    (FS)->regs.reg[0].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[0].loc.offset = (long)&sc_->eax - new_cfa_;		\
-    (FS)->regs.reg[3].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[3].loc.offset = (long)&sc_->ebx - new_cfa_;		\
-    (FS)->regs.reg[1].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[1].loc.offset = (long)&sc_->ecx - new_cfa_;		\
-    (FS)->regs.reg[2].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[2].loc.offset = (long)&sc_->edx - new_cfa_;		\
-    (FS)->regs.reg[6].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[6].loc.offset = (long)&sc_->esi - new_cfa_;		\
-    (FS)->regs.reg[7].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[7].loc.offset = (long)&sc_->edi - new_cfa_;		\
-    (FS)->regs.reg[5].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[5].loc.offset = (long)&sc_->ebp - new_cfa_;		\
-    (FS)->regs.reg[8].how = REG_SAVED_OFFSET;				\
-    (FS)->regs.reg[8].loc.offset = (long)&sc_->eip - new_cfa_;		\
-    (FS)->retaddr_column = 8;						\
-    goto SUCCESS;							\
-  } while (0)
-#endif /* ifdef __x86_64__  */
-#endif /* ifdef inhibit_libc  */
+#define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h"