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| author | Gabe Black <gblack@eecs.umich.edu> | 2008-12-16 23:06:37 -0800 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2008-12-16 23:06:37 -0800 |
| commit | 02cd18f536544d4b5fa19681b4c9dbd5b2cb87ff (patch) | |
| tree | 0e43f983937e2964aaa29ea6809fd5636a2e1446 /src/cpu | |
| parent | ab5eeb4b62e14528beaf41d21305dfda075c5133 (diff) | |
| download | gem5-02cd18f536544d4b5fa19681b4c9dbd5b2cb87ff.tar.xz | |
SPARC: Truncate syscall args and return values appropriately.
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/simple_thread.hh | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/cpu/simple_thread.hh b/src/cpu/simple_thread.hh index a503ab600..4831b701a 100644 --- a/src/cpu/simple_thread.hh +++ b/src/cpu/simple_thread.hh @@ -385,8 +385,15 @@ class SimpleThread : public ThreadState TheISA::IntReg getSyscallArg(int i) { assert(i < TheISA::NumArgumentRegs); - return regs.readIntReg(TheISA::flattenIntIndex(getTC(), - TheISA::ArgumentReg[i])); + TheISA::IntReg val = regs.readIntReg( + TheISA::flattenIntIndex(getTC(), TheISA::ArgumentReg[i])); +#if THE_ISA == SPARC_ISA + if (bits(this->readMiscRegNoEffect( + SparcISA::MISCREG_PSTATE), 3, 3)) { + val = bits(val, 31, 0); + } +#endif + return val; } // used to shift args for indirect syscall |