Author: Armin Rigo <[email protected]>
Branch: continulet-jit-2
Changeset: r53059:17f7f5edd8a7
Date: 2012-03-01 16:46 +0100
http://bitbucket.org/pypy/pypy/changeset/17f7f5edd8a7/
Log: CALLs with a large number of arguments.
diff --git a/pypy/jit/backend/x86/assembler.py
b/pypy/jit/backend/x86/assembler.py
--- a/pypy/jit/backend/x86/assembler.py
+++ b/pypy/jit/backend/x86/assembler.py
@@ -1129,6 +1129,12 @@
else:
pass_on_stack.append(loc)
+ extra_esp = 0
+ if len(pass_on_stack) > OFFSTACK_REAL_FRAME:
+ extra_esp = WORD * align_stack_words(len(pass_on_stack) -
+ OFFSTACK_REAL_FRAME)
+ self.mc.SUB_ri(esp.value, extra_esp)
+
# Emit instructions to pass the stack arguments
# XXX: Would be nice to let remap_frame_layout take care of this, but
# we'd need to create something like StackLoc, but relative to esp,
@@ -1165,10 +1171,13 @@
x = r10
remap_frame_layout(self, src_locs, dst_locs, X86_64_SCRATCH_REG)
- self._regalloc.reserve_param(len(pass_on_stack))
+ #self._regalloc.reserve_param(len(pass_on_stack))
self.mc.CALL(x)
self.mark_gc_roots(force_index)
+ if extra_esp > 0:
+ self.mc.ADD_ri(esp.value, extra_esp)
+
def call(self, addr, args, res):
force_index = self.write_new_force_index()
self._emit_call(force_index, imm(addr), args)
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