/* 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.
}
/* 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
const aarch64_inst *inst ATTRIBUTE_UNUSED,
aarch64_operand_error *errors ATTRIBUTE_UNUSED)
{
- int64_t imm;
+ uint64_t imm;
imm = extract_all_fields (self, code);
DEBUG_TRACE ("constraint matching FAIL");
}
-decode_fail:
+ decode_fail:
return FALSE;
}
\f