Messages in this thread | | | Date | Fri, 20 Nov 2009 23:10:06 -0700 | From | Michal Jaegermann <> | Subject | Re: Easier way to generate stuff like asm-offsets. |
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On Fri, Nov 20, 2009 at 04:56:14PM -0800, Kaz Kylheku wrote: > > Here is the simple trick: .... > > Now we compile test.c: > > $ /path/to/toolchain/bin/arch-prefix-gcc test.c -c > > Then we can use the ``nm'' tool (the toolchain should have binutils in it): > > $ /path/to/toolchain/bin/arch-prefix-nm -t d -P foo.c # decimal > output, posix format > offsetof_foo_member C 00000044 00000044 > > There we go, 44 bytes. Simple. This is almost an #include file; > we just have to do some simple filtering, such as: > > $ /path/to/toolchain/bin/arch-prefix-nm -t d -P test.o | awk '{ print "#define", $1, $4 }' > #define offsetof_foo_member 00000044
If that is a "decimal output" then resulting define has a wrong format. You do not want octal. Fix that with ... | awk '{print "#define", $1, 0 + $4}' to force a conversion of a string to a number.
Michal
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