diff options
Diffstat (limited to 'miasm2/jitter/llvmconvert.py')
| -rw-r--r-- | miasm2/jitter/llvmconvert.py | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/miasm2/jitter/llvmconvert.py b/miasm2/jitter/llvmconvert.py index 65c6aa07..9796b265 100644 --- a/miasm2/jitter/llvmconvert.py +++ b/miasm2/jitter/llvmconvert.py @@ -223,24 +223,6 @@ class LLVMContext_JIT(LLVMContext): itype = LLVMType.IntType(64) fc = {"llvm.ctpop.i8": {"ret": i8, "args": [i8]}, - "rot_left": {"ret": itype, - "args": [itype, - itype, - itype]}, - "rot_right": {"ret": itype, - "args": [itype, - itype, - itype]}, - "rcr_rez_op": {"ret": itype, - "args": [itype, - itype, - itype, - itype]}, - "rcl_rez_op": {"ret": itype, - "args": [itype, - itype, - itype, - itype]}, "x86_bsr": {"ret": itype, "args": [itype, itype]}, @@ -391,11 +373,7 @@ class LLVMFunction(): op_translate = {'cpuid': 'cpuid', } ## Add the size as first argument - op_translate_with_size = {'<<<': 'rot_left', - '>>>': 'rot_right', - '<<<c_rez': 'rcl_rez_op', - '>>>c_rez': 'rcr_rez_op', - 'bsr': 'x86_bsr', + op_translate_with_size = {'bsr': 'x86_bsr', 'bsf': 'x86_bsf', } ## Add the size as suffix @@ -790,6 +768,30 @@ class LLVMFunction(): self.update_cache(expr, ret) return ret + + if op in ['<<<', '>>>']: + assert len(expr.args) == 2 + # First compute rotation modulus size + count = self.add_ir(expr.args[1]) + value = self.add_ir(expr.args[0]) + itype = LLVMType.IntType(expr.size) + expr_size = itype(expr.size) + + shift = builder.urem(count, expr_size) + shift_inv = builder.sub(expr_size, shift) + + if op == '<<<': + part_a = builder.shl(value, shift) + part_b = builder.lshr(value, shift_inv) + else: + part_a = builder.lshr(value, shift) + part_b = builder.shl(value, shift_inv) + ret = builder.or_(part_a, part_b) + self.update_cache(expr, ret) + return ret + + + if op in ["int_16_to_double", "int_32_to_double", "int_64_to_double", "mem_16_to_double", "mem_32_to_double", "mem_64_to_double"]: arg = self.add_ir(expr.args[0]) |