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I was too much concerned of pointers' contents being NULL. I am ashamed.
I added my coding in if_lan91cxx.c,eth_drv.c,if_ethersubr.c, so I exchanged them with original CVS current sources.
Result was ng_ether_attach_p==NULL and passed out (*ng_ether_attach_p)(ifp), in next function as before.
ether_ifattach(ifp, bpf) register struct ifnet *ifp; int bpf; { | | if (ng_ether_attach_p != NULL) (*ng_ether_attach_p)(ifp); }
I setted DEBUG=0xFF and stored serial output log. Although I checked it I couldn't pinpoint suspicious point. I continue to check it.
Also,I remember one point I changed that I should tell you. Although I don't know it is related to right now problem.
I changed cdl_option CYGBLD_GLOBAL_CFLAGS to next default_value { CYGHWR_HAL_SH_BIGENDIAN ? "-D_KERNEL -D__ECOS -gdwarf-22 -mb -m3 -Wall -Wpointer-arith -Wstrict-prototypes -Winline -Wundef -Woverloaded-virtual -ggdb -O1 -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -fvtable-gc -finit-priority" : "-D_KERNEL -D__ECOS -ml -m3 -Wall -Wpointer-arith -Wstrict-prototypes -Winline -Wundef -Woverloaded-virtual -ggdb -O1 -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -fvtable-gc -finit-priority" } from original. #original default_value { CYGHWR_HAL_SH_BIGENDIAN ? "-mb -m3 -Wall -Wpointer-arith -Wstrict-prototypes -Winline -Wundef -Woverloaded-virtual -ggdb -O2 -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -fvtable-gc -finit-priority" : "-ml -m3 -Wall -Wpointer-arith -Wstrict-prototypes -Winline -Wundef -Woverloaded-virtual -ggdb -O2 -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -fvtable-gc -finit-priority" }
I changed optimization level from -O2 to -O1 because when I built on cygwin as it was, there happend many Segmentation errors. I perused old mailing lists and found that there is bug in sh-elf-gcc, and on cygwin -O2 causes above errors whereas less than -O1 causes no error. So I changed to -O1.
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