Docs » Autodocs » exec.library » Debug
Debug -- run the system debugger
Debug(flags)
D0
void Debug(ULONG);
This function calls the system debugger. By default this debugger
is "SAD" in >= V39 and "ROM-WACK" in < V39. Other debuggers are
encouraged to take over this entry point (via SetFunction()) so
that when an application calls Debug(), the alternative debugger
will get control. Currently a zero is passed to allow future
expansion.
The Debug() call may be made when the system is in a questionable
state; if you have a SetFunction() patch, make few assumptions, be
prepared for Supervisor mode, and be aware of differences in the
Motorola stack frames on the 68000,'10,'20,'30,'40 (etc.)
In ROMWack, calling this function in SUPERVISOR state would have
caused the a5 register to be trashed and the user stack pointer to
be trashed. As of V39 (and the instroduction of SAD) this is no
longer the case. However, calling this function in Supervisor
state is a bit "tricky" at best...
Note that due to a bug, pre-V40 SAD had the command
codes wrong. See the SAD autodoc for more details.
SetFunction(), your favorite debugger's manual..., the SAD autodocs..., the ROM-WACK chapter of the ROM Kernel Manual... (pre-V39
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