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bochs: trace REP/REPZ/REPNZ iterations

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This allows single-stepping through REP/REPZ/REPNZ iterations.  We mainly
need this for a little more realistic timing model when, e.g., copying
large memory areas with REP MOVSB.

Be aware that memory-access tracing only works reliably for REPxx-prefixed
instructions if Bochs was configured with --disable-repeat-speedups, as
this Bochs optimization completely circumvents the usual memory access
paths.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1885 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
This commit is contained in:
hsc
2012-11-06 15:43:24 +00:00
parent 0b8710872b
commit 1f8dfd01e9
1 changed files with 27 additions and 0 deletions
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27
simulators/bochs/cpu/cpu.cc
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@ -241,6 +241,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat(bxInstruction_c *i, BxExecutePtr_tR
}
if (RCX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -260,6 +263,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat(bxInstruction_c *i, BxExecutePtr_tR
}
if (ECX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -278,6 +284,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat(bxInstruction_c *i, BxExecutePtr_tR
}
if (CX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -324,6 +333,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat_ZF(bxInstruction_c *i, BxExecutePtr
}
if (! get_ZF() || RCX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -343,6 +355,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat_ZF(bxInstruction_c *i, BxExecutePtr
}
if (! get_ZF() || ECX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -361,6 +376,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat_ZF(bxInstruction_c *i, BxExecutePtr
}
if (! get_ZF() || CX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -381,6 +399,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat_ZF(bxInstruction_c *i, BxExecutePtr
}
if (get_ZF() || RCX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -400,6 +421,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat_ZF(bxInstruction_c *i, BxExecutePtr
}
if (get_ZF() || ECX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif
@ -418,6 +442,9 @@ void BX_CPP_AttrRegparmN(2) BX_CPU_C::repeat_ZF(bxInstruction_c *i, BxExecutePtr
}
if (get_ZF() || CX == 0) return;
// DanceOS
defineCPULoopJoinPoint(BX_CPU_THIS, i);
#if BX_DEBUGGER == 0
if (BX_CPU_THIS_PTR async_event)
#endif