From: Michael Hope <michael.hope@linaro.org>
To: gcc-patches@gcc.gnu.org
Cc: patches@linaro.org
Subject: [PATCH, ARM] fix PR pch/45979 regression on ARM
Date: Sun, 01 May 2011 21:22:00 -0000 [thread overview]
Message-ID: <BANLkTi=JozMFpMe5Ye-qRztsJx+d_h=mBw@mail.gmail.com> (raw)
Linux 2.6.35 and later on ARM randomise the address space, breaking
precompiled header support in GCC. The fix is to use the support in
GCC for mmap()ing into a fixed, likely to be free address. The ARM
memory map is modeled on the i386 so I used the same definition.
Tested on trunk with a Ubuntu 2.6.35 kernel. Bootstraps OK and clears
all of the PCH testsuite failures. Note that this change is
equivalent to Mikael Pettersson's patch at:
http://gcc.gnu.org/ml/gcc-patches/2010-10/msg02252.html
OK for trunk?
-- Michael
gcc/
2011-05-02 Michael Hope <michael.hope@linaro.org>
PR pch/45979
* config/host-linux.c (TRY_EMPTY_VM_SPACE): Define for
__ARM_EABI__ hosts.
diff --git a/gcc/config/host-linux.c b/gcc/config/host-linux.c
index 47ce3ea..8b41685 100644
--- a/gcc/config/host-linux.c
+++ b/gcc/config/host-linux.c
@@ -84,6 +84,8 @@
# define TRY_EMPTY_VM_SPACE 0x60000000
#elif defined(__mc68000__)
# define TRY_EMPTY_VM_SPACE 0x40000000
+#elif defined(__ARM_EABI__)
+# define TRY_EMPTY_VM_SPACE 0x60000000
#else
# define TRY_EMPTY_VM_SPACE 0
#endif
next reply other threads:[~2011-05-01 21:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-01 21:22 Michael Hope [this message]
2011-05-03 12:52 ` Richard Earnshaw
2011-05-05 13:57 ` Ramana Radhakrishnan
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