Author: hager <[email protected]>
Branch: ppc-jit-backend
Changeset: r49127:8c0775a2ea17
Date: 2011-11-10 12:58 +0100
http://bitbucket.org/pypy/pypy/changeset/8c0775a2ea17/
Log: First set SP when saving managed registers
diff --git a/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py
b/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py
--- a/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py
+++ b/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py
@@ -292,16 +292,18 @@
def _gen_exit_path(self):
mc = PPCBuilder()
#
- self._save_managed_regs(mc)
- # adjust SP (r1)
+ # compute offset to new SP
size = WORD * (len(r.MANAGED_REGS)) + BACKCHAIN_SIZE
- # XXX do quadword alignment
- #while size % (4 * WORD) != 0:
- # size += WORD
+ # set SP
if IS_PPC_32:
mc.stwu(r.SP.value, r.SP.value, -size)
else:
mc.stdu(r.SP.value, r.SP.value, -size)
+ self._save_managed_regs(mc)
+ # adjust SP (r1)
+ # XXX do quadword alignment
+ #while size % (4 * WORD) != 0:
+ # size += WORD
#
decode_func_addr = llhelper(self.recovery_func_sign,
self.failure_recovery_func)
@@ -352,12 +354,12 @@
# Save all registers which are managed by the register
# allocator on top of the stack before decoding.
def _save_managed_regs(self, mc):
- for i in range(len(r.MANAGED_REGS) - 1, -1, -1):
+ for i in range(len(r.MANAGED_REGS)):
reg = r.MANAGED_REGS[i]
if IS_PPC_32:
- mc.stw(reg.value, r.SP.value, -(len(r.MANAGED_REGS) - i) *
WORD)
+ mc.stw(reg.value, r.SP.value, i * WORD + BACKCHAIN_SIZE)
else:
- mc.std(reg.value, r.SP.value, -(len(r.MANAGED_REGS) - i) *
WORD)
+ mc.std(reg.value, r.SP.value, i * WORD + BACKCHAIN_SIZE)
def gen_bootstrap_code(self, nonfloatlocs, inputargs):
for i in range(len(nonfloatlocs)):
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