All,
Talking about tty logging and fake ide reminded of the current state of
UML on 2.4 kernels:
http://uml.nagafix.co.uk/uml-2.4.32-bs2.patch.bz2
Is Blaisorblade's 2.4.28-bs2 patch tweaked to apply cleanly on 2.4.32.
Plus another tweak to avoid duplicated symbols when linking with newer
libc.a, the patch is based on this one:
http://seclists.org/lists/linux-kernel/2004/Nov/1048.html
But I'm not sure I did it right, so please check it (bottom of this
email is the modified Makefile)
/usr/lib/libc.a: could not read symbols: Bad value
Any idea why that is? It happens when I use:
i686-pc-linux-gnu-3.4.4-vanilla
but not with:
i686-pc-linux-gnu-3.3.6-vanilla
Problem is that the resulting kernel cannot be executed!
$ kernel32-2.4.32-bs2: cannot execute binary file
The other problem with this patch is that I can't get it to compile with
SUBARCH=i386 on amd64.
(even though -bs2 contains a SUBARCH fix - maybe I didn't merge it
properly?)
# make ARCH=um SUBARCH=i386 linux
cd /uml/kernels/src/linux-2.4.32-bs2/include/asm-um && ln
-sf ../asm-i386 arch
cd /uml/kernels/src/linux-2.4.32-bs2/arch/um/include && ln -sf
sysdep-i386 sysdep
cd arch/um && ln -sf os-Linux os
cd /uml/kernels/src/linux-2.4.32-bs2/include/asm-um/ ; \
ln -sf archparam-i386.h archparam.h
cd /uml/kernels/src/linux-2.4.32-bs2/include/asm-um/ ; \
ln -sf system-i386.h system.h
cd /uml/kernels/src/linux-2.4.32-bs2/include/asm-um/ ; \
ln -sf sigcontext-i386.h sigcontext.h
cd /uml/kernels/src/linux-2.4.32-bs2/include/asm-um/ ; \
ln -sf processor-i386.h processor.h
cd /uml/kernels/src/linux-2.4.32-bs2/include/asm-um/ ; \
ln -sf ptrace-i386.h ptrace.h
cd /uml/kernels/src/linux-2.4.32-bs2/include/asm-um/ ; \
ln -sf arch-signal-i386.h arch-signal.h
sed 's/ CONFIG/
UML_CONFIG/' /uml/kernels/src/linux-2.4.32-bs2/include/linux/autoconf.h
> arch/um/include/uml-config.h
make -C arch/um/sys-i386/util mk_sc
make[1]: Entering directory
`/uml/kernels/src/linux-2.4.32-bs2/arch/um/sys-i386/util'
gcc -c mk_sc.c
mk_sc.c: In function `main':
mk_sc.c:21: error: structure has no member named `eip'
mk_sc.c:22: error: structure has no member named `esp'
mk_sc.c:25: error: structure has no member named `ds'
mk_sc.c:26: error: structure has no member named `es'
mk_sc.c:27: error: structure has no member named `ss'
mk_sc.c:30: error: structure has no member named `eax'
mk_sc.c:31: error: structure has no member named `ebx'
mk_sc.c:32: error: structure has no member named `ecx'
mk_sc.c:33: error: structure has no member named `edx'
mk_sc.c:34: error: structure has no member named `edi'
mk_sc.c:35: error: structure has no member named `esi'
mk_sc.c:36: error: structure has no member named `ebp'
mk_sc.c:42: error: structure has no member named `cw'
mk_sc.c:43: error: structure has no member named `sw'
mk_sc.c:44: error: structure has no member named `tag'
mk_sc.c:45: error: structure has no member named `ipoff'
mk_sc.c:46: error: structure has no member named `cssel'
mk_sc.c:47: error: structure has no member named `dataoff'
mk_sc.c:48: error: structure has no member named `datasel'
mk_sc.c:50: error: structure has no member named `_fxsr_env'
make[1]: *** [mk_sc.o] Error 1
make[1]: Leaving directory
`/uml/kernels/src/linux-2.4.32-bs2/arch/um/sys-i386/util'
make: *** [arch/um/sys-i386/util/mk_sc] Error 2
Any ideas?
Antoine
Here is the modified Makefile
$ cat linux-2.4.32-bs2/arch/um/kernel/tt/Makefile
#
# Copyright (C) 2002 - 2003 Jeff Dike ([EMAIL PROTECTED])
# Licensed under the GPL
#
O_TARGET = tt.o
obj-y = exec_kern.o exec_user.o gdb.o ksyms.o mem.o mem_user.o
process_kern.o \
syscall_kern.o syscall_user.o time.o tlb.o tracer.o trap_user.o
\
uaccess.o uaccess_user.o
extra-y := unmap_fin.o
clean-files := unmap_tmp.o
obj-$(CONFIG_PT_PROXY) += gdb_kern.o
subdir-y = sys-$(SUBARCH)
subdir-$(CONFIG_PT_PROXY) += ptproxy
obj-y += $(join $(subdir-y),$(subdir-y:%=/%.o))
export-objs = ksyms.o
USER_OBJS = $(filter %_user.o,$(obj-y)) gdb.o time.o tracer.o
UNMAP_CFLAGS := $(patsubst -pg -DPROFILING,,$(USER_CFLAGS))
UNMAP_CFLAGS := $(patsubst -fprofile-arcs -ftest-coverage,,
$(UNMAP_CFLAGS))
include $(TOPDIR)/Rules.make
$(USER_OBJS) : %.o: %.c
$(CC) $(CFLAGS_$@) $(USER_CFLAGS) -c -o $@ $<
$(O_TARGET) : unmap_fin.o
unmap.o: unmap.c
$(CC) $(UNMAP_CFLAGS) -c -o $@ $<
unmap_fin.o : unmap.o
ld -r -o unmap_tmp.o unmap.o -lc -L/usr/lib
objcopy unmap_tmp.o unmap_fin.o -G switcheroo
clean :
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