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author | Gabe Black <gblack@eecs.umich.edu> | 2007-06-14 20:52:24 +0000 |
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committer | Gabe Black <gblack@eecs.umich.edu> | 2007-06-14 20:52:24 +0000 |
commit | dad30582248b049a72dd3aa0350f19b1b8c456ee (patch) | |
tree | 211e26d960bbf53a2ecd560930bf7ad2f0687da3 | |
parent | 721394411088a40f786fbe3486f5a099c6e9d2d3 (diff) | |
download | gem5-dad30582248b049a72dd3aa0350f19b1b8c456ee.tar.xz |
Sign extend byte immediates as well. There might need to be a fancier system in place to handle this in the future.
--HG--
extra : convert_revision : 2c5bd719c770d9a93a57bd29782842f82384863d
-rw-r--r-- | src/arch/x86/predecoder.cc | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/arch/x86/predecoder.cc b/src/arch/x86/predecoder.cc index 72b60385b..3ed18aeb2 100644 --- a/src/arch/x86/predecoder.cc +++ b/src/arch/x86/predecoder.cc @@ -390,8 +390,15 @@ namespace X86ISA //Instructions which use true 64 bit immediates won't be //affected, and instructions that use true 32 bit immediates //won't notice. - if(immediateSize == 4) + switch(immediateSize) + { + case 4: emi.immediate = sext<32>(emi.immediate); + break; + case 1: + emi.immediate = sext<8>(emi.immediate); + } + DPRINTF(Predecoder, "Collected immediate %#x.\n", emi.immediate); emiIsReady = true; |