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The sh4 passes floating point arguments in FP registers.
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2003-07-30 Michael Snyder <msnyder@redhat.com>
* sh-tdep.h (struct gdbarch_tdep): New member FLOAT_ARGLAST_REG. * sh-tdep.c (sh_gdbarch_init): For sh4, set FLOAT_ARG0_REGNUM and FLOAT_ARGLAST_REGNUM, to be used for argument passing. (sh_push_dummy_call): Use the above to pass floating point arguments in floating point registers when called for.
Index: sh-tdep.c
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