Author: Edd Barrett <vex...@gmail.com>
Branch: w-xor-x
Changeset: r86198:228237a37ee6
Date: 2016-08-15 14:52 +0100
http://bitbucket.org/pypy/pypy/changeset/228237a37ee6/
Log: Make cpu_info() W^X compliant.
diff --git a/rpython/jit/backend/x86/detect_feature.py
b/rpython/jit/backend/x86/detect_feature.py
--- a/rpython/jit/backend/x86/detect_feature.py
+++ b/rpython/jit/backend/x86/detect_feature.py
@@ -1,17 +1,20 @@
import sys
import struct
from rpython.rtyper.lltypesystem import lltype, rffi
-from rpython.rlib.rmmap import alloc, free
+from rpython.rlib.rmmap import alloc, free, set_pages_executable
+
+CPU_INFO_SZ = 4096
def cpu_info(instr):
- data = alloc(4096)
+ data = alloc(CPU_INFO_SZ)
pos = 0
for c in instr:
data[pos] = c
pos += 1
+ set_pages_executable(data, CPU_INFO_SZ)
fnptr = rffi.cast(lltype.Ptr(lltype.FuncType([], lltype.Signed)), data)
code = fnptr()
- free(data, 4096)
+ free(data, CPU_INFO_SZ)
return code
def detect_sse2():
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