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| author | Gabe Black <gblack@eecs.umich.edu> | 2009-06-09 23:41:35 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2009-06-09 23:41:35 -0700 |
| commit | c913c64be22f0b91552fdebb16b1505591a32c64 (patch) | |
| tree | 74905e26e3104edabf43ea886add741ca20c4140 /src/arch/arm/linux/process.cc | |
| parent | 3ff1e922c22dcc68274b16fcce080cd69b69b47b (diff) | |
| download | gem5-c913c64be22f0b91552fdebb16b1505591a32c64.tar.xz | |
ARM: Add a memory_barrier function to the "comm page".
This function doesn't actually provide a memory barrier (I don't think they're
implemented) and instead just returns.
Diffstat (limited to 'src/arch/arm/linux/process.cc')
| -rw-r--r-- | src/arch/arm/linux/process.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/arch/arm/linux/process.cc b/src/arch/arm/linux/process.cc index bc6388b73..a36d1fd8f 100644 --- a/src/arch/arm/linux/process.cc +++ b/src/arch/arm/linux/process.cc @@ -482,6 +482,14 @@ ArmLinuxProcess::startup() swiNeg1, sizeof(swiNeg1)); } + // We don't have barriers, so just return. + uint8_t memory_barrier[] = + { + 0x0e, 0xf0, 0xa0, 0xe1 //usr_ret lr + }; + tc->getMemPort()->writeBlob(commPage + 0x0fa0, memory_barrier, + sizeof(memory_barrier)); + // This -should- be atomic, but I don't think all the support that we'd // need is implemented. There should also be memory barriers around it. uint8_t cmpxchg[] = |