* 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

1 files changed, 1 insertions, 158 deletions

diff --git a/gcc/config/ia64/linux.h b/gcc/config/ia64/linux.h
index 5c73b0c25ef..3d585609f61 100644
--- a/gcc/config/ia64/linux.h
+++ b/gcc/config/ia64/linux.h
@@ -55,161 +55,4 @@ do {						\
 #undef LINK_EH_SPEC
 #define LINK_EH_SPEC ""
 
-/* Do code reading to identify a signal frame, and set the frame
-   state data appropriately.  See unwind-dw2.c for the structs.  */
-
-/* This works only for glibc-2.3 and later, because sigcontext is different
-   in glibc-2.2.4.  */
-
-#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
-
-#ifdef IN_LIBGCC2
-#include <signal.h>
-#include <sys/ucontext.h>
-
-#define IA64_GATE_AREA_START 0xa000000000000100LL
-#define IA64_GATE_AREA_END   0xa000000000030000LL
-
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS)		\
-  if ((CONTEXT)->rp >= IA64_GATE_AREA_START				\
-      && (CONTEXT)->rp < IA64_GATE_AREA_END)				\
-    {									\
-      struct sigframe {							\
-	char scratch[16];						\
-	unsigned long sig_number;					\
-	struct siginfo *info;						\
-	struct sigcontext *sc;						\
-      } *frame_ = (struct sigframe *)(CONTEXT)->psp;			\
-      struct sigcontext *sc_ = frame_->sc;				\
-									\
-      /* Restore scratch registers in case the unwinder needs to	\
-	 refer to a value stored in one of them.  */			\
-      {									\
-	int i_;								\
-									\
-	for (i_ = 2; i_ < 4; i_++)					\
-	  (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_];		\
-	for (i_ = 8; i_ < 12; i_++)					\
-	  (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_];		\
-	for (i_ = 14; i_ < 32; i_++)					\
-	  (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_];		\
-      }									\
-	  								\
-      (CONTEXT)->fpsr_loc = &(sc_->sc_ar_fpsr);				\
-      (CONTEXT)->pfs_loc = &(sc_->sc_ar_pfs);				\
-      (CONTEXT)->lc_loc = &(sc_->sc_ar_lc);				\
-      (CONTEXT)->unat_loc = &(sc_->sc_ar_unat);				\
-      (CONTEXT)->br_loc[0] = &(sc_->sc_br[0]);				\
-      (CONTEXT)->br_loc[6] = &(sc_->sc_br[6]);				\
-      (CONTEXT)->br_loc[7] = &(sc_->sc_br[7]);				\
-      (CONTEXT)->pr = sc_->sc_pr;					\
-      (CONTEXT)->psp = sc_->sc_gr[12];					\
-      (CONTEXT)->gp = sc_->sc_gr[1];					\
-      /* Signal frame doesn't have an associated reg. stack frame 	\
-         other than what we adjust for below.	  */			\
-      (FS) -> no_reg_stack_frame = 1;					\
-									\
-      if (sc_->sc_rbs_base)						\
-	{								\
-	  /* Need to switch from alternate register backing store.  */	\
-	  long ndirty, loadrs = sc_->sc_loadrs >> 16;			\
-	  unsigned long alt_bspstore = (CONTEXT)->bsp - loadrs;		\
-	  unsigned long bspstore;					\
-	  unsigned long *ar_bsp = (unsigned long *)(sc_->sc_ar_bsp);	\
-									\
-	  ndirty = ia64_rse_num_regs ((unsigned long *) alt_bspstore,	\
-				      (unsigned long *) (CONTEXT)->bsp);\
-	  bspstore = (unsigned long)					\
-		     ia64_rse_skip_regs (ar_bsp, -ndirty);		\
-	  ia64_copy_rbs ((CONTEXT), bspstore, alt_bspstore, loadrs,	\
-			 sc_->sc_ar_rnat);				\
-	}								\
-									\
-      /* Don't touch the branch registers o.t. b0, b6 and b7.		\
-	 The kernel doesn't pass the preserved branch registers		\
-	 in the sigcontext but leaves them intact, so there's no	\
-	 need to do anything with them here.  */			\
-      {									\
-	unsigned long sof = sc_->sc_cfm & 0x7f;				\
-	(CONTEXT)->bsp = (unsigned long)				\
-	  ia64_rse_skip_regs ((unsigned long *)(sc_->sc_ar_bsp), -sof); \
-      }									\
-									\
-      (FS)->curr.reg[UNW_REG_RP].where = UNW_WHERE_SPREL;		\
-      (FS)->curr.reg[UNW_REG_RP].val 					\
-	= (unsigned long)&(sc_->sc_ip) - (CONTEXT)->psp;		\
-      (FS)->curr.reg[UNW_REG_RP].when = -1;				\
-									\
-      goto SUCCESS;							\
-    }
-
-#define MD_HANDLE_UNWABI(CONTEXT, FS)					\
-  if ((FS)->unwabi == ((3 << 8) | 's')					\
-      || (FS)->unwabi == ((0 << 8) | 's'))				\
-    {									\
-      struct sigframe {							\
-	char scratch[16];						\
-	unsigned long sig_number;					\
-	struct siginfo *info;						\
-	struct sigcontext *sc;						\
-      } *frame_ = (struct sigframe *)(CONTEXT)->psp;			\
-      struct sigcontext *sc_ = frame_->sc;				\
-									\
-      /* Restore scratch registers in case the unwinder needs to	\
-	 refer to a value stored in one of them.  */			\
-      {									\
-	int i_;								\
-									\
-	for (i_ = 2; i_ < 4; i_++)					\
-	  (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_];		\
-	for (i_ = 8; i_ < 12; i_++)					\
-	  (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_];		\
-	for (i_ = 14; i_ < 32; i_++)					\
-	  (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_];		\
-      }									\
-	  								\
-      (CONTEXT)->pfs_loc = &(sc_->sc_ar_pfs);				\
-      (CONTEXT)->lc_loc = &(sc_->sc_ar_lc);				\
-      (CONTEXT)->unat_loc = &(sc_->sc_ar_unat);				\
-      (CONTEXT)->br_loc[0] = &(sc_->sc_br[0]);				\
-      (CONTEXT)->br_loc[6] = &(sc_->sc_br[6]);				\
-      (CONTEXT)->br_loc[7] = &(sc_->sc_br[7]);				\
-      (CONTEXT)->pr = sc_->sc_pr;					\
-      (CONTEXT)->gp = sc_->sc_gr[1];					\
-      /* Signal frame doesn't have an associated reg. stack frame 	\
-         other than what we adjust for below.	  */			\
-      (FS) -> no_reg_stack_frame = 1;					\
-									\
-      if (sc_->sc_rbs_base)						\
-	{								\
-	  /* Need to switch from alternate register backing store.  */	\
-	  long ndirty, loadrs = sc_->sc_loadrs >> 16;			\
-	  unsigned long alt_bspstore = (CONTEXT)->bsp - loadrs;		\
-	  unsigned long bspstore;					\
-	  unsigned long *ar_bsp = (unsigned long *)(sc_->sc_ar_bsp);	\
-									\
-	  ndirty = ia64_rse_num_regs ((unsigned long *) alt_bspstore,	\
-				      (unsigned long *) (CONTEXT)->bsp);\
-	  bspstore = (unsigned long)					\
-		     ia64_rse_skip_regs (ar_bsp, -ndirty);		\
-	  ia64_copy_rbs ((CONTEXT), bspstore, alt_bspstore, loadrs,	\
-			 sc_->sc_ar_rnat);				\
-	}								\
-									\
-      /* Don't touch the branch registers o.t. b0, b6 and b7.		\
-	 The kernel doesn't pass the preserved branch registers		\
-	 in the sigcontext but leaves them intact, so there's no	\
-	 need to do anything with them here.  */			\
-      {									\
-	unsigned long sof = sc_->sc_cfm & 0x7f;				\
-	(CONTEXT)->bsp = (unsigned long)				\
-	  ia64_rse_skip_regs ((unsigned long *)(sc_->sc_ar_bsp), -sof); \
-      }									\
-									\
-      /* pfs_loc already set above.  Without this pfs_loc would point	\
-	 incorrectly to sc_cfm instead of sc_ar_pfs.  */		\
-      (FS)->curr.reg[UNW_REG_PFS].where = UNW_WHERE_NONE;		\
-    }
-
-#endif /* IN_LIBGCC2 */
-#endif /* glibc-2.3 or better */
+#define MD_UNWIND_SUPPORT "config/ia64/linux-unwind.h"