diff options
Diffstat (limited to 'sim/arm/armemu.c')
| -rw-r--r-- | sim/arm/armemu.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sim/arm/armemu.c b/sim/arm/armemu.c index 166f3aa..f0a6103 100644 --- a/sim/arm/armemu.c +++ b/sim/arm/armemu.c @@ -1340,6 +1340,7 @@ ARMul_Emulate26 (register ARMul_State * state) { ARMword value; extern int SWI_vector_installed; + int in_thumb_mode; /* Hardware is allowed to optionally override this instruction and treat it as a breakpoint. Since @@ -1377,7 +1378,17 @@ ARMul_Emulate26 (register ARMul_State * state) } } + /* We must signal an abort to mark the next instruction as + invalid and in need of refetching. This is because if this + the instruction was a breakpoint inserted by the debugger, + the instruction could be changed back to its original value. + The abort however, will automatically reset the processor into + ARM mode, so we have to preserve the mode flag and resort it + after singalling the abort. */ + in_thumb_mode = TFLAG; ARMul_Abort (state, ARMul_PrefetchAbortV); + ASSIGNT (in_thumb_mode); + break; } } |