Uniquefy gdb.threads/attach-into-signal.exp

[deliverable/binutils-gdb.git] / gdb / aarch64-tdep.c

diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index 37d3eb31d69a4a23c41a264c53cd51760e371624..cec4d3e9e4615217248df7e84e4b7714039e439d 100644 (file)
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -42,6 +42,8 @@
 #include "user-regs.h"
 #include "language.h"
 #include "infcall.h"
+#include "ax.h"
+#include "ax-gdb.h"
 
 #include "aarch64-tdep.h"
 
@@ -1119,13 +1121,38 @@ aarch64_make_stub_cache (struct frame_info *this_frame, void **this_cache)
   cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
   *this_cache = cache;
 
-  cache->prev_sp
-    = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM);
-  cache->prev_pc = get_frame_pc (this_frame);
+  TRY
+    {
+      cache->prev_sp = get_frame_register_unsigned (this_frame,
+                                                   AARCH64_SP_REGNUM);
+      cache->prev_pc = get_frame_pc (this_frame);
+      cache->available_p = 1;
+    }
+  CATCH (ex, RETURN_MASK_ERROR)
+    {
+      if (ex.error != NOT_AVAILABLE_ERROR)
+       throw_exception (ex);
+    }
+  END_CATCH
 
   return cache;
 }
 
+/* Implement the "stop_reason" frame_unwind method.  */
+
+static enum unwind_stop_reason
+aarch64_stub_frame_unwind_stop_reason (struct frame_info *this_frame,
+                                      void **this_cache)
+{
+  struct aarch64_prologue_cache *cache
+    = aarch64_make_stub_cache (this_frame, this_cache);
+
+  if (!cache->available_p)
+    return UNWIND_UNAVAILABLE;
+
+  return UNWIND_NO_REASON;
+}
+
 /* Our frame ID for a stub frame is the current SP and LR.  */
 
 static void
@@ -1135,7 +1162,10 @@ aarch64_stub_this_id (struct frame_info *this_frame,
   struct aarch64_prologue_cache *cache
     = aarch64_make_stub_cache (this_frame, this_cache);
 
-  *this_id = frame_id_build (cache->prev_sp, cache->prev_pc);
+  if (cache->available_p)
+    *this_id = frame_id_build (cache->prev_sp, cache->prev_pc);
+  else
+    *this_id = frame_id_build_unavailable_stack (cache->prev_pc);
 }
 
 /* Implement the "sniffer" frame_unwind method.  */
@@ -1162,7 +1192,7 @@ aarch64_stub_unwind_sniffer (const struct frame_unwind *self,
 struct frame_unwind aarch64_stub_unwind =
 {
   NORMAL_FRAME,
-  default_frame_unwind_stop_reason,
+  aarch64_stub_frame_unwind_stop_reason,
   aarch64_stub_this_id,
   aarch64_prologue_prev_register,
   NULL,
@@ -2074,7 +2104,7 @@ aarch64_return_in_memory (struct gdbarch *gdbarch, struct type *type)
   int nRc;
   enum type_code code;
 
-  CHECK_TYPEDEF (type);
+  type = check_typedef (type);
 
   /* In the AArch64 ABI, "integer" like aggregate types are returned
      in registers.  For an aggregate type to be integer like, its size
@@ -2245,6 +2275,18 @@ aarch64_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
   *pc = extract_unsigned_integer (buf, X_REGISTER_SIZE, byte_order);
   return 1;
 }
+
+/* Implement the "gen_return_address" gdbarch method.  */
+
+static void
+aarch64_gen_return_address (struct gdbarch *gdbarch,
+                           struct agent_expr *ax, struct axs_value *value,
+                           CORE_ADDR scope)
+{
+  value->type = register_type (gdbarch, AARCH64_LR_REGNUM);
+  value->kind = axs_lvalue_register;
+  value->u.reg = AARCH64_LR_REGNUM;
+}
 \f
 
 /* Return the pseudo register name corresponding to register regnum.  */
@@ -2440,7 +2482,11 @@ aarch64_pseudo_read_value (struct gdbarch *gdbarch,
 
       v_regnum = AARCH64_V0_REGNUM + regnum - AARCH64_S0_REGNUM;
       status = regcache_raw_read (regcache, v_regnum, reg_buf);
-      memcpy (buf, reg_buf, S_REGISTER_SIZE);
+      if (status != REG_VALID)
+       mark_value_bytes_unavailable (result_value, 0,
+                                     TYPE_LENGTH (value_type (result_value)));
+      else
+       memcpy (buf, reg_buf, S_REGISTER_SIZE);
       return result_value;
     }
 
@@ -2814,6 +2860,8 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   if (tdep->jb_pc >= 0)
     set_gdbarch_get_longjmp_target (gdbarch, aarch64_get_longjmp_target);
 
+  set_gdbarch_gen_return_address (gdbarch, aarch64_gen_return_address);
+
   tdesc_use_registers (gdbarch, tdesc, tdesc_data);
 
   /* Add standard register aliases.  */