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target-mips: Fix RDHWR on CP0.Count 

For RDHWR on the CP0.Count register, env->CP0_Count was being returned.
This value is a delta against the QEMU_CLOCK_VIRTUAL clock, not the
correct current value of CP0.Count. Use cpu_mips_get_count() instead.

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
This commit is contained in:
Alex Smith 2015-09-08 11:34:11 +01:00 committed by Leon Alrae
parent ca6c7803d2
commit cdfcad7883
1 changed files with 7 additions and 2 deletions
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9
target-mips/op_helper.c
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@ -2184,10 +2184,15 @@ target_ulong helper_rdhwr_synci_step(CPUMIPSState *env)
target_ulong helper_rdhwr_cc(CPUMIPSState *env)
{
if ((env->hflags & MIPS_HFLAG_CP0) ||
(env->CP0_HWREna & (1 << 2)))
(env->CP0_HWREna & (1 << 2))) {
#ifdef CONFIG_USER_ONLY
return env->CP0_Count;
else
#else
return (int32_t)cpu_mips_get_count(env);
#endif
} else {
helper_raise_exception(env, EXCP_RI);
}
return 0;
}