mpi: make stack unwinding work at i386 mpi functions
* mpi/i386/syntax.h: Include 'config.h'. (CFI_STARTPROC, CFI_ENDPROC, CFI_ADJUST_CFA_OFFSET, CFI_REL_OFFSET) (CFI_RESTORE, CFI_PUSH, CFI_POP): New. * mpi/i386/mpih-add1.S: Add CFI directives. * mpi/i386/mpih-lshift.S: Add CFI directives. * mpi/i386/mpih-mul1.S: Add CFI directives. * mpi/i386/mpih-mul2.S: Add CFI directives. * mpi/i386/mpih-mul3.S: Add CFI directives. * mpi/i386/mpih-rshift.S: Add CFI directives. * mpi/i386/mpih-sub1.S: Add CFI directives.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>