diff options
Diffstat (limited to 'sim/v850/v850.igen')
| -rw-r--r-- | sim/v850/v850.igen | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/sim/v850/v850.igen b/sim/v850/v850.igen index eace5a1..7fe5370 100644 --- a/sim/v850/v850.igen +++ b/sim/v850/v850.igen @@ -144,10 +144,16 @@ rrrrr,110110,RRRRR + iiiiiiiiiiiiiiii:VI:::andi ddddd,1011,ddd,cccc:III:::Bcond "b%s<cccc> <disp9>" { - int cond = condition_met (cccc); - if (cond) - nia = cia + disp9; - TRACE_BRANCH1 (cond); + int cond; + if ((ddddd == 0x00) && (ddd == 0x00) && (cccc == 0x05)) { + // Special case - treat "br *" like illegal instruction + sim_engine_halt (SD, CPU, NULL, cia, sim_stopped, SIM_SIGTRAP); + } else { + cond = condition_met (cccc); + if (cond) + nia = cia + disp9; + TRACE_BRANCH1 (cond); + } } @@ -1158,6 +1164,11 @@ rrrrr,110101,RRRRR + iiiiiiiiiiiiiiii:VI:::xori sim_engine_halt (SD, CPU, NULL, cia, sim_stopped, SIM_SIGTRAP); } +// True illegal instruction +00000,111111,00000 + 00000,11111,100000:X:::ilgop +{ + sim_engine_halt (SD, CPU, NULL, cia, sim_stopped, SIM_SIGTRAP); +} // DIVHN |