Convert to src-layout ta/nix

1 files changed, 70 insertions, 0 deletions

diff --git a/src/miasm/arch/ppc/jit.py b/src/miasm/arch/ppc/jit.py
new file mode 100644
index 00000000..dcaff82c
--- /dev/null
+++ b/src/miasm/arch/ppc/jit.py
@@ -0,0 +1,70 @@
+from builtins import range
+from miasm.jitter.jitload import Jitter, named_arguments
+from miasm.arch.ppc.sem import Lifter_PPC32b
+import struct
+
+import logging
+
+log = logging.getLogger('jit_ppc')
+hnd = logging.StreamHandler()
+hnd.setFormatter(logging.Formatter("[%(levelname)-8s]: %(message)s"))
+log.addHandler(hnd)
+log.setLevel(logging.CRITICAL)
+
+class jitter_ppc32b(Jitter):
+    max_reg_arg = 8
+
+    def __init__(self, loc_db, *args, **kwargs):
+        super(jitter_ppc32b, self).__init__(Lifter_PPC32b(loc_db),
+                                            *args, **kwargs)
+        self.vm.set_big_endian()
+
+    def push_uint32_t(self, v):
+        self.cpu.R1 -= 4
+        self.vm.set_mem(self.cpu.R1, struct.pack(">I", v))
+
+    def pop_uint32_t(self):
+        x = struct.unpack(">I", self.vm.get_mem(self.cpu.R1, 4))[0]
+        self.cpu.R1 += 4
+        return x
+
+    def get_stack_arg(self, n):
+        x = struct.unpack(">I", self.vm.get_mem(self.cpu.R1 + 8 + 4 * n, 4))[0]
+        return x
+
+    @named_arguments
+    def func_args_systemv(self, n_args):
+        args = [self.get_arg_n_systemv(i) for i in range(n_args)]
+        ret_ad = self.cpu.LR
+        return ret_ad, args
+
+    def func_ret_systemv(self, ret_addr, ret_value1=None, ret_value2=None):
+        self.pc = self.cpu.PC = ret_addr
+        if ret_value1 is not None:
+            self.cpu.R3 = ret_value1
+        if ret_value2 is not None:
+            self.cpu.R4 = ret_value2
+        return True
+
+    def func_prepare_systemv(self, ret_addr, *args):
+        for index in range(min(len(args), self.max_reg_arg)):
+            setattr(self.cpu, 'R%d' % (index + 3), args[index])
+        for index in range(len(args) - 1, self.max_reg_arg - 1, -1):
+            self.push_uint32_t(args[index])
+
+        # reserve room for LR save word and backchain
+        self.cpu.R1 -= 8
+
+        self.cpu.LR = ret_addr
+
+    def get_arg_n_systemv(self, index):
+        if index < self.max_reg_arg:
+            arg = getattr(self.cpu, 'R%d' % (index + 3))
+        else:
+            arg = self.get_stack_arg(index - self.max_reg_arg)
+        return arg
+
+
+    def init_run(self, *args, **kwargs):
+        Jitter.init_run(self, *args, **kwargs)
+        self.cpu.PC = self.pc