* sparc-linux-tdep.c (sparc32_linux_sigtramp_p): Fix

	signal return stub symbol names, __restore and __restore_rt are
	the i386 symbol names not the sparc ones.
	(sparc32_linux_sigtramp_frame_cache): Document bits/sigcontext.h
	as where the offsets were obtained from.
	* sparc64-linux-tdep.c (LINUX64_RT_SIGTRAMP_INSN0,
	LINUX64_RT_SIGTRAMP_INSN1): New defines.
	(sparc64_linux_sigtramp_start, sparc64_linux_sigtramp_p,
	sparc64_linux_sigtramp_frame_cache,
	sparc64_linux_sigtramp_frame_this_id,
	sparc64_linux_sigtramp_frame_prev_register,
	sparc64_linux_sigtramp_frame_sniffer): New functions.
	(sparc64_linux_sigtramp_frame_unwind): New frame unwinder.
	(sparc64_linux_init_abi): Register sigtramp frame sniffer.
	* Makefile.in (sparc64-linux-tdep.o): Update dependencies.

1 files changed, 9 insertions, 6 deletions

diff --git a/gdb/sparc-linux-tdep.c b/gdb/sparc-linux-tdep.c
index 36c0565..db40365 100644
--- a/gdb/sparc-linux-tdep.c
+++ b/gdb/sparc-linux-tdep.c
@@ -144,16 +144,17 @@ sparc32_linux_sigtramp_p (struct frame_info *next_frame)
   find_pc_partial_function (pc, &name, NULL, NULL);
 
   /* If we have NAME, we can optimize the search.  The trampolines are
-     named __restore and __restore_rt.  However, they aren't dynamically
-     exported from the shared C library, so the trampoline may appear to
-     be part of the preceding function.  This should always be sigaction,
-     __sigaction, or __libc_sigaction (all aliases to the same function).  */
+     named __sigreturn_stub and __rt_sigreturn_stub.  However, they
+     aren't dynamically exported from the shared C library, so the
+     trampoline may appear to be part of the preceding function.  This
+     should always be sigaction, __sigaction, or __libc_sigaction (all
+     aliases to the same function).  */
   if (name == NULL || strstr (name, "sigaction") != NULL)
     return (sparc32_linux_sigtramp_start (next_frame) != 0
 	    || sparc32_linux_rt_sigtramp_start (next_frame) != 0);
 
-  return (strcmp ("__restore", name) == 0
-	  || strcmp ("__restore_rt", name) == 0);
+  return (strcmp ("__sigreturn_stub", name) == 0
+	  || strcmp ("__rt_sigreturn_stub", name) == 0);
 }
 
 static struct sparc_frame_cache *
@@ -192,6 +193,8 @@ sparc32_linux_sigtramp_frame_cache (struct frame_info *next_frame,
 
   cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
 
+  /* Offsets from <bits/sigcontext.h> */
+
   cache->saved_regs[SPARC32_PSR_REGNUM].addr = sigcontext_addr + 0;
   cache->saved_regs[SPARC32_PC_REGNUM].addr = sigcontext_addr + 4;
   cache->saved_regs[SPARC32_NPC_REGNUM].addr = sigcontext_addr + 8;