* amd64-tdep.c (amd64_sigtramp_frame_sniffer): Rewrite to use new

sigtramp_p member of `struct gdbarch_tdep'.  Also check whether
the program counter is in the range specified by `struct
gdbarch_tdep'.
* amd64-linux-tdep.c: Include "symtab.h".
(amd64_linux_pc_in_sigtramp): Remove function.
(amd64_linux_sigtramp_p): New function.
(amd64_linux_init_abi): Initialize TDEP->sigtramp_p.  Don't set
deprecated_pc_in_sigtramp.
* amd64nbsd-tdep.c: Include "symtab.h".
(amd64nbsd_sigtramp_p): New function.
(amd64nbsd_init_abi): Initialize TDEP->sigtramp_p.  Don't set
deprecated_pc_in_sigtramp.
* amd64obsd-tdep.c: Include "symtab.h" and "objfiles.h".  Add a
few comments.
(amd64obsd_pc_in_sigtramp): Remove function.
(amd64obsd_sigtramp_p): New function.
(amd64obsd_init_abi): Initialize TDEP->sigtramp_p.  Don't set
deprecated_pc_in_sigtramp.
* i386-tdep.h (struct gdbarch_tdep): Add sigtramp_p member.
(i386bsd_pc_ins_sigtramp): Remove prototype.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): Remove prototypes.
* i386-tdep.c (i386_sigtramp_frame_sniffer): Rewrite to use new
sigtramp_p member of `struct gdbarch_tdep'.  Also check whether
the program counter is in the range specified by `struct
gdbarch_tdep'.
(i386_pc_in_sigtramp, i386_svr4_pc_in_sigtramp): Remove functions.
(i386_sigtramp_p, i386_svr4_sigtramp_p): New functions.
(i386_go32_pc_in_sigtramp): Remove function.
(i386_svr4_init_abi): Don't set deprecated_pc_in_sigtramp.
Initialize TDEP->sigtramp_p.
(i386_go32_init_abi): Initialize TDEP->sigtramp_p to NULL.
(i386_gdbarch_init): Initialize TDEP->sigtramp_p.  Don't set
deprecated_pc_in_sigtramp.
* i386-linux-tdep.c: Adjust comments.
(i386_linux_pc_in_sigtramp): Remove function.
(i386_linux_sigtramp_p): New function.
(i386_linux_init_abi): Initialize TDEP->sigtramp_p.  Don't set
deprecated_pc_in_sigtramp.
* i386-nto-tdep.c: Update copyright year.
(i386nto_pc_in_sigtramp): Remove function.
(i386nto_sigtramp_p): New function.
(i386nto_sigcontext_addr): Use I386_ESP_REGNUM instead of
SP_REGNUM.
(i386nto_init_abi): Initialize TDEP->sigtramp_p.  Don't set
deprecated_pc_in_sigtramp.
* i386-sol2-tdep.c: Update copyright year.
(i386_sol2_pc_in_sigtramp): Remove function.
(i386_sol2_sigtramp_p): New function.
(i386_sol2_init_abi): Initialize TDEP->sigtramp_p.  Don't set
deprecated_pc_in_sigtramp.
* i386bsd-tdep.c (i386bsd_pc_in_sigtramp): Remove function.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): Remove functions.
(i386bsd_init_abi): Don't set deprecated_pc_in_sigtramp,
deprecated_sigtramp_start and deprecated_sigtramp_end.
* i386nbsd-tdep.c: Include "frame.h" and "symtab.h".
(i386nbsd_pc_in_sigtramp): Remove function.
(i386nbsd_sigtramp_p): New function.
(i386nbsd_init_abi): Don't set deprecated_pc_in_sigtramp,
deprecated_sigtramp_start, deprecated_sigtramp_end.  Initialize
TDEP->sigtramp_start, TDEP->sigtramp_end and TDEP->sigtramp_p.
* i386obsd-tdep.c: Include "frame.h", "symtab.h" and "objfiles.h".
(i386obsd_pc_in_sigtramp): Remove function.
(i386obsd_sigtramp_p): New function.
(i386obsd_sigtramp_start, i386obsd_sigtramp_end): Remove
functions.
(i386bsd_init_abi): Don't set deprecated_pc_in_sigtramp,
deprecated_sigtramp_start, deprecated_sigtramp_end.  Initialize
TDEP->sigtramp_p.
* Makefile.in (amd64-linux-tdep.o, amd64nbsd-tdep.o,
amd64obsd-tdep.o, i386nbsd-tdep.o, i386obsd-tdep.o): Update
dependencies.

1 files changed, 19 insertions, 4 deletions

diff --git a/gdb/amd64obsd-tdep.c b/gdb/amd64obsd-tdep.c
index 70a9da8..5ab1a47 100644
--- a/gdb/amd64obsd-tdep.c
+++ b/gdb/amd64obsd-tdep.c
@@ -22,6 +22,8 @@
 #include "defs.h"
 #include "frame.h"
 #include "gdbcore.h"
+#include "symtab.h"
+#include "objfiles.h"
 #include "osabi.h"
 #include "regset.h"
 #include "target.h"
@@ -75,11 +77,16 @@ amd64obsd_regset_from_core_section (struct gdbarch *gdbarch,
 
 /* Support for signal handlers.  */
 
+/* Default page size.  */
 static const int amd64obsd_page_size = 4096;
 
+/* Return whether the frame preciding NEXT_FRAME corresponds to an
+   OpenBSD sigtramp routine.  */
+
 static int
-amd64obsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
+amd64obsd_sigtramp_p (struct frame_info *next_frame)
 {
+  CORE_ADDR pc = frame_pc_unwind (next_frame);
   CORE_ADDR start_pc = (pc & ~(amd64obsd_page_size - 1));
   const char sigreturn[] =
   {
@@ -87,9 +94,17 @@ amd64obsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
     0x67, 0x00, 0x00, 0x00,	/* movq $SYS_sigreturn, %rax */
     0xcd, 0x80			/* int $0x80 */
   };
-  char *buf;
+  char *name, *buf;
+
+  /* If the function has a valid symbol name, it isn't a
+     trampoline.  */
+  find_pc_partial_function (pc, &name, NULL, NULL);
+  if (name != NULL)
+    return 0;
 
-  if (name)
+  /* If the function lives in a valid section (even without a starting
+     point) it isn't a trampoline.  */
+  if (find_pc_section (pc) != NULL)
     return 0;
 
   /* If we can't read the instructions at START_PC, return zero.  */
@@ -195,7 +210,7 @@ amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   tdep->jb_pc_offset = 7 * 8;
 
-  set_gdbarch_deprecated_pc_in_sigtramp (gdbarch, amd64obsd_pc_in_sigtramp);
+  tdep->sigtramp_p = amd64obsd_sigtramp_p;
   tdep->sigcontext_addr = amd64obsd_sigcontext_addr;
   tdep->sc_reg_offset = amd64obsd_sc_reg_offset;
   tdep->sc_num_regs = ARRAY_SIZE (amd64obsd_sc_reg_offset);