Hello,

# bcopy (and all other functions written in assembler) doesn't set up the # frame pointer, so stack traces in it don't work right. Usually, the # previous function's args are shown as bcopy's args and the previous # function's name isn't shown. They are easy to see by examining the # stack (x/x $esp,10).

Oh, thanks. Didn't know this.

# >The kernel has "options DDB", no compiler optimization, # # Not even the default -O?

Yes, I threw it away, being afraid to get even more strange results from the debugger. Today CPUs _are_ fast enough. :)

# >config(8) had '-g' switch (note: linkage of the kernel failed with this # >switch combo; ld didn't find _memcmp symbol, why? I added libc.a to the # # memcmp is a C library function that isn't available in the kernel.

I guess that with '-g' present gcc doesn't put an inline equivalent of it in the resulting code?

Thanks! (I'll probably try it once more, but I hope I localized the erroneous code already. Stupid me -- why didn't I realize that "block in log body ..." never actually logged "body" for me? :(

--

With best regards -- Andrew Stesin.

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"You may delegate authority, but not responsibility." Frank's Management Rule #1.