This is interesting, when i run this script:
fbt::strcpy:entry
/ pid == $1 /
{
self->eip = uregs[R_EIP];
printf("EIP=%x", self->ebp);
}
fbt::strcpy:return
/ pid == $1 /
{
printf("saved EIP=%x return EIP=%x", self->eip, uregs[R_EIP]);
}
produces this output:
dtrace: script './registers.d' matched 2 probes
CPU ID FUNCTION:NAME
1 22690 strcpy:entry EIP=fedc5b35
1 22691 strcpy:return saved EIP=fedc5b35 return
EIP=fedc5b35
0 22690 strcpy:entry EIP=41414141
0 22691 strcpy:return saved EIP=41414141 return
EIP=41414141
0 22690 strcpy:entry EIP=41414141
0 22691 strcpy:return saved EIP=41414141 return
EIP=41414141
0 22690 strcpy:entry EIP=41414141
0 22691 strcpy:return saved EIP=41414141 return
EIP=41414141
0 22690 strcpy:entry EIP=41414141
0 22691 strcpy:return saved EIP=41414141 return
EIP=41414141
the strcpy commnad is only called once in the program but is entered according
to dtrace multiple times. Can anyone explain what is going on here?
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