Author: hager <sven.ha...@uni-duesseldorf.de>
Branch: ppc-jit-backend
Changeset: r48407:7c2f8272c677
Date: 2011-10-25 09:46 +0200
http://bitbucket.org/pypy/pypy/changeset/7c2f8272c677/
Log: Implemented STRLEN, STRGETITEM, STRSETITEM.
diff --git a/pypy/jit/backend/ppc/ppcgen/opassembler.py
b/pypy/jit/backend/ppc/ppcgen/opassembler.py
--- a/pypy/jit/backend/ppc/ppcgen/opassembler.py
+++ b/pypy/jit/backend/ppc/ppcgen/opassembler.py
@@ -371,5 +371,32 @@
signed = descr.is_item_signed()
self._ensure_result_bit_extension(res, size, signed)
+ # XXX 64 bit adjustment needed
+ def emit_strlen(self, op, arglocs, regalloc):
+ l0, l1, res = arglocs
+ if l1.is_imm():
+ self.mc.lwz(res.value, l0.value, l1.getint())
+ else:
+ self.mc.lwzx(res.value, l0.value, l1.value)
+
+ def emit_strgetitem(self, op, arglocs, regalloc):
+ res, base_loc, ofs_loc, basesize = arglocs
+ if ofs_loc.is_imm():
+ self.mc.addi(res.value, base_loc.value, ofs_loc.getint())
+ else:
+ self.mc.add(res.value, base_loc.value, ofs_loc.value)
+
+ self.mc.load_imm(r.r0, basesize.value)
+ self.mc.lbzx(res.value, res.value, r.r0.value)
+
+ def emit_strsetitem(self, op, arglocs, regalloc):
+ value_loc, base_loc, ofs_loc, basesize = arglocs
+ if ofs_loc.is_imm():
+ self.mc.addi(base_loc.value, base_loc.value, ofs_loc.getint())
+ else:
+ self.mc.add(base_loc.value, base_loc.value, ofs_loc.value)
+ self.mc.load_imm(r.r0, basesize.value)
+ self.mc.stbx(value_loc.value, base_loc.value, r.r0.value)
+
def nop(self):
self.mc.ori(0, 0, 0)
diff --git a/pypy/jit/backend/ppc/ppcgen/regalloc.py
b/pypy/jit/backend/ppc/ppcgen/regalloc.py
--- a/pypy/jit/backend/ppc/ppcgen/regalloc.py
+++ b/pypy/jit/backend/ppc/ppcgen/regalloc.py
@@ -16,7 +16,8 @@
BaseCallDescr, BaseSizeDescr
from pypy.jit.metainterp.resoperation import rop
from pypy.jit.backend.ppc.ppcgen import locations
-from pypy.rpython.lltypesystem import rffi, lltype
+from pypy.rpython.lltypesystem import rffi, lltype, rstr
+from pypy.jit.backend.llsupport import symbolic
import pypy.jit.backend.ppc.ppcgen.register as r
class TempInt(TempBox):
@@ -413,6 +414,67 @@
self.possibly_free_var(op.result)
return [res, base_loc, ofs_loc, imm(scale), imm(ofs)]
+ def prepare_strlen(self, op):
+ l0, box = self._ensure_value_is_boxed(op.getarg(0))
+ boxes = [box]
+
+ basesize, itemsize, ofs_length = symbolic.get_array_token(rstr.STR,
+ self.cpu.translate_support_code)
+ ofs_box = ConstInt(ofs_length)
+ imm_ofs = _check_imm_arg(ofs_box)
+
+ if imm_ofs:
+ l1 = self.make_sure_var_in_reg(ofs_box, boxes)
+ else:
+ l1, box1 = self._ensure_value_is_boxed(ofs_box, boxes)
+ boxes.append(box1)
+
+ self.possibly_free_vars(boxes)
+ res = self.force_allocate_reg(op.result)
+ self.possibly_free_var(op.result)
+ return [l0, l1, res]
+
+ def prepare_strgetitem(self, op):
+ boxes = list(op.getarglist())
+ base_loc, box = self._ensure_value_is_boxed(boxes[0])
+ boxes.append(box)
+
+ a1 = boxes[1]
+ imm_a1 = _check_imm_arg(a1)
+ if imm_a1:
+ ofs_loc = self.make_sure_var_in_reg(a1, boxes)
+ else:
+ ofs_loc, box = self._ensure_value_is_boxed(a1, boxes)
+ boxes.append(box)
+
+ self.possibly_free_vars(boxes)
+ res = self.force_allocate_reg(op.result)
+ self.possibly_free_var(op.result)
+
+ basesize, itemsize, ofs_length = symbolic.get_array_token(rstr.STR,
+ self.cpu.translate_support_code)
+ assert itemsize == 1
+ return [res, base_loc, ofs_loc, imm(basesize)]
+
+ def prepare_strsetitem(self, op):
+ boxes = list(op.getarglist())
+
+ base_loc, box = self._ensure_value_is_boxed(boxes[0], boxes)
+ boxes.append(box)
+
+ ofs_loc, box = self._ensure_value_is_boxed(boxes[1], boxes)
+ boxes.append(box)
+
+ value_loc, box = self._ensure_value_is_boxed(boxes[2], boxes)
+ boxes.append(box)
+
+ self.possibly_free_vars(boxes)
+
+ basesize, itemsize, ofs_length = symbolic.get_array_token(rstr.STR,
+ self.cpu.translate_support_code)
+ assert itemsize == 1
+ return [value_loc, base_loc, ofs_loc, imm(basesize)]
+
# from ../x86/regalloc.py:791
def _unpack_fielddescr(self, fielddescr):
assert isinstance(fielddescr, BaseFieldDescr)
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