From: Gabe Black <gblack@eecs.umich.edu>
Date: Fri, 2 Oct 2009 08:32:58 +0000 (-0700)
Subject: X86: Make successive anonymous mmaps move down in 32 bit SE mode Linux.
X-Git-Tag: stable_2012_02_02~1715
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=44ceb80c2dd1c4991357292ca27809b5012b9556;p=gem5.git

X86: Make successive anonymous mmaps move down in 32 bit SE mode Linux.
---

diff --git a/src/arch/x86/linux/linux.hh b/src/arch/x86/linux/linux.hh
index d5bead8f3..a810d4a79 100644
--- a/src/arch/x86/linux/linux.hh
+++ b/src/arch/x86/linux/linux.hh
@@ -190,7 +190,9 @@ class X86Linux32 : public Linux
        uint32_t totalhigh; /* Total high memory size */
        uint32_t freehigh;  /* Available high memory size */
        uint32_t mem_unit;  /* Memory unit size in bytes */
-   } tgt_sysinfo;
+    } tgt_sysinfo;
+
+    static bool mmapGrowsDown() { return true; }
 };
 
 #endif
diff --git a/src/arch/x86/process.cc b/src/arch/x86/process.cc
index 4082e568c..f7678443d 100644
--- a/src/arch/x86/process.cc
+++ b/src/arch/x86/process.cc
@@ -184,7 +184,7 @@ I386LiveProcess::I386LiveProcess(LiveProcessParams *params,
 
     // Set up region for mmaps. This was determined empirically and may not
     // always be correct.
-    mmap_start = mmap_end = (Addr)0xf7ffd000ULL;
+    mmap_start = mmap_end = (Addr)0xf7ffe000ULL;
 }
 
 SyscallDesc*