X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=opcodes%2Faarch64-dis.c;h=6567880efbaaeea5e1f2aa026df99059e9bb7471;hb=087e161b3cd9a8626dc05ce1bdb8dfaf353a71b1;hp=8b32097a5fa116d728e7e70b15be11534740c843;hpb=9d48687b41f17ccbd7c61dd76b96147f28916951;p=deliverable%2Fbinutils-gdb.git

diff --git a/opcodes/aarch64-dis.c b/opcodes/aarch64-dis.c
index 8b32097a5f..6567880efb 100644
--- a/opcodes/aarch64-dis.c
+++ b/opcodes/aarch64-dis.c
@@ -1,5 +1,5 @@
 /* aarch64-dis.c -- AArch64 disassembler.
-   Copyright (C) 2009-2019 Free Software Foundation, Inc.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
    Contributed by ARM Ltd.
 
    This file is part of the GNU opcodes library.
@@ -178,18 +178,15 @@ extract_all_fields (const aarch64_operand *self, aarch64_insn code)
 }
 
 /* Sign-extend bit I of VALUE.  */
-static inline int32_t
+static inline uint64_t
 sign_extend (aarch64_insn value, unsigned i)
 {
-  uint32_t ret = value;
+  uint64_t ret, sign;
 
   assert (i < 32);
-  if ((value >> i) & 0x1)
-    {
-      uint32_t val = (uint32_t)(-1) << i;
-      ret = ret | val;
-    }
-  return (int32_t) ret;
+  ret = value;
+  sign = (uint64_t) 1 << i;
+  return ((ret & (sign + sign - 1)) ^ sign) - sign;
 }
 
 /* N.B. the following inline helpfer functions create a dependency on the
@@ -254,6 +251,16 @@ get_expected_qualifier (const aarch64_inst *inst, int i)
 
 /* Operand extractors.  */
 
+bfd_boolean
+aarch64_ext_none (const aarch64_operand *self ATTRIBUTE_UNUSED,
+		  aarch64_opnd_info *info ATTRIBUTE_UNUSED,
+		  const aarch64_insn code ATTRIBUTE_UNUSED,
+		  const aarch64_inst *inst ATTRIBUTE_UNUSED,
+		  aarch64_operand_error *errors ATTRIBUTE_UNUSED)
+{
+  return TRUE;
+}
+
 bfd_boolean
 aarch64_ext_regno (const aarch64_operand *self, aarch64_opnd_info *info,
 		   const aarch64_insn code,
@@ -658,7 +665,7 @@ aarch64_ext_imm (const aarch64_operand *self, aarch64_opnd_info *info,
 		 const aarch64_inst *inst ATTRIBUTE_UNUSED,
 		 aarch64_operand_error *errors ATTRIBUTE_UNUSED)
 {
-  int64_t imm;
+  uint64_t imm;
 
   imm = extract_all_fields (self, code);
 
@@ -2975,7 +2982,7 @@ aarch64_opcode_decode (const aarch64_opcode *opcode, const aarch64_insn code,
       DEBUG_TRACE ("constraint matching FAIL");
     }
 
-decode_fail:
+ decode_fail:
   return FALSE;
 }