* 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, 69 deletions

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"