Author: hager <[email protected]>
Branch: ppc-jit-backend
Changeset: r47923:2eac535ed148
Date: 2011-10-10 18:48 +0200
http://bitbucket.org/pypy/pypy/changeset/2eac535ed148/
Log: Implemented further comparison operations.
diff --git a/pypy/jit/backend/ppc/ppcgen/helper/assembler.py
b/pypy/jit/backend/ppc/ppcgen/helper/assembler.py
--- a/pypy/jit/backend/ppc/ppcgen/helper/assembler.py
+++ b/pypy/jit/backend/ppc/ppcgen/helper/assembler.py
@@ -1,17 +1,63 @@
import pypy.jit.backend.ppc.ppcgen.condition as c
+from pypy.rlib.rarithmetic import r_uint, r_longlong, intmask
def gen_emit_cmp_op(condition):
def f(self, op, arglocs, regalloc):
l0, l1, res = arglocs
+ # do the comparison
if l1.is_imm():
self.mc.cmpwi(0, l0.value, l1.value)
else:
self.mc.cmpw(0, l0.value, l1.value)
- if condition == c.LE:
+ # After the comparison, place the result
+ # in the first bit of the CR
+ if condition == c.LT:
+ self.mc.cror(0, 0, 0)
+ elif condition == c.LE:
self.mc.cror(0, 0, 2)
+ elif condition == c.EQ:
+ self.mc.cror(0, 2, 2)
+ elif condition == c.GE:
+ self.mc.cror(0, 1, 2)
+ elif condition == c.GT:
+ self.mc.cror(0, 1, 1)
- resval = res.value
- self.mc.mfcr(resval)
+ resval = res.value
+ # move the content of the CR to resval
+ self.mc.mfcr(resval)
+ # zero out everything except of the result
self.mc.rlwinm(resval, resval, 1, 31, 31)
return f
+
+def encode32(mem, i, n):
+ mem[i] = chr(n & 0xFF)
+ mem[i+1] = chr((n >> 8) & 0xFF)
+ mem[i+2] = chr((n >> 16) & 0xFF)
+ mem[i+3] = chr((n >> 24) & 0xFF)
+
+def decode32(mem, index):
+ return intmask(ord(mem[index])
+ | ord(mem[index+1]) << 8
+ | ord(mem[index+2]) << 16
+ | ord(mem[index+3]) << 24)
+
+class saved_registers(object):
+ def __init__(self, assembler, regs_to_save, regalloc=None):
+ self.assembler = assembler
+ self.regalloc = regalloc
+ if self.regalloc:
+ self._filter_regs(regs_to_save, vfp_regs_to_save)
+ else:
+ self.regs = regs_to_save
+
+ def __enter__(self):
+ if len(self.regs) > 0:
+ self.assembler.PUSH([r.value for r in self.regs])
+
+ def _filter_regs(self, regs_to_save, vfp_regs_to_save):
+ regs = []
+ for box, reg in self.regalloc.rm.reg_bindings.iteritems():
+ if reg is r.ip or (reg in regs_to_save and
self.regalloc.stays_alive(box)):
+ regs.append(reg)
+ self.regs = regs
_______________________________________________
pypy-commit mailing list
[email protected]
http://mail.python.org/mailman/listinfo/pypy-commit
