Add xml selftests for aarch64 target description.

[deliverable/binutils-gdb.git] / gdb / sparc64-linux-tdep.c

diff --git a/gdb/sparc64-linux-tdep.c b/gdb/sparc64-linux-tdep.c
index 0dd47d097a1139f87f9deff22c365d73560f908d..04cb62b250838591bd41c2e626372e1366c75521 100644 (file)
--- a/gdb/sparc64-linux-tdep.c
+++ b/gdb/sparc64-linux-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for GNU/Linux UltraSPARC.
 
-   Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   Copyright (C) 2003-2017 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -33,6 +33,17 @@
 #include "xml-syscall.h"
 #include "linux-tdep.h"
 
+/* ADI specific si_code */
+#ifndef SEGV_ACCADI
+#define SEGV_ACCADI    3
+#endif
+#ifndef SEGV_ADIDERR
+#define SEGV_ADIDERR   4
+#endif
+#ifndef SEGV_ADIPERR
+#define SEGV_ADIPERR   5
+#endif
+
 /* The syscall's XML filename for sparc 64-bit.  */
 #define XML_SYSCALL_FILENAME_SPARC64 "syscalls/sparc64-linux.xml"
 
@@ -104,6 +115,62 @@ sparc64_linux_sigframe_init (const struct tramp_frame *self,
     }
   trad_frame_set_id (this_cache, frame_id_build (base, func));
 }
+
+/* sparc64 GNU/Linux implementation of the handle_segmentation_fault
+   gdbarch hook.
+   Displays information related to ADI memory corruptions.  */
+
+void
+sparc64_linux_handle_segmentation_fault (struct gdbarch *gdbarch,
+                                     struct ui_out *uiout)
+{
+  if (gdbarch_bfd_arch_info (gdbarch)->bits_per_word != 64)
+    return;
+
+  CORE_ADDR addr = 0;
+  long si_code = 0;
+
+  TRY
+    {
+      /* Evaluate si_code to see if the segfault is ADI related.  */
+      si_code = parse_and_eval_long ("$_siginfo.si_code\n");
+
+      if (si_code >= SEGV_ACCADI && si_code <= SEGV_ADIPERR)
+        addr = parse_and_eval_long ("$_siginfo._sifields._sigfault.si_addr");
+    }
+  CATCH (exception, RETURN_MASK_ALL)
+    {
+      return;
+    }
+  END_CATCH
+
+  /* Print out ADI event based on sig_code value */
+  switch (si_code)
+    {
+    case SEGV_ACCADI:  /* adi not enabled */
+      uiout->text ("\n");
+      uiout->field_string ("sigcode-meaning", _("ADI disabled"));
+      uiout->text (_(" while accessing address "));
+      uiout->field_fmt ("bound-access", "%s", paddress (gdbarch, addr));
+      break;
+    case SEGV_ADIDERR: /* disrupting mismatch */
+      uiout->text ("\n");
+      uiout->field_string ("sigcode-meaning", _("ADI deferred mismatch"));
+      uiout->text (_(" while accessing address "));
+      uiout->field_fmt ("bound-access", "%s", paddress (gdbarch, addr));
+      break;
+    case SEGV_ADIPERR: /* precise mismatch */
+      uiout->text ("\n");
+      uiout->field_string ("sigcode-meaning", _("ADI precise mismatch"));
+      uiout->text (_(" while accessing address "));
+      uiout->field_fmt ("bound-access", "%s", paddress (gdbarch, addr));
+      break;
+    default:
+      break;
+    }
+
+}
+
 \f
 /* Return the address of a system call's alternative return
    address.  */
@@ -194,7 +261,7 @@ sparc64_linux_collect_core_fpregset (const struct regset *regset,
 static void
 sparc64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
 {
-  struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
+  struct gdbarch_tdep *tdep = gdbarch_tdep (regcache->arch ());
   ULONGEST state;
 
   regcache_cooked_write_unsigned (regcache, tdep->pc_regnum, pc);
@@ -241,7 +308,6 @@ static int
 sparc64_linux_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
 {
   struct gdbarch *gdbarch = get_frame_arch (frame);
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
   CORE_ADDR jb_addr;
   gdb_byte buf[8];
 
@@ -339,11 +405,9 @@ sparc64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_xml_syscall_file_name (gdbarch, XML_SYSCALL_FILENAME_SPARC64);
   set_gdbarch_get_syscall_number (gdbarch,
                                   sparc64_linux_get_syscall_number);
+  set_gdbarch_handle_segmentation_fault (gdbarch,
+                                        sparc64_linux_handle_segmentation_fault);
 }
-\f
-
-/* Provide a prototype to silence -Wmissing-prototypes.  */
-extern void _initialize_sparc64_linux_tdep (void);
 
 void
 _initialize_sparc64_linux_tdep (void)