Hi Jeff, Thank you for replying to the post.
>> How is this different than the function vector support that is >> already in GCC for the H8/300 series processors? Current H8/300 implementation of function vector seems inappropriate. This patch fixes following problems from it. 1. Attribute syntax: The function vector attribute is expected to accept one argument i.e. vector number. Ref: http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html#index- calling-functions-through-the-function-vector-on-H8_002f300_002c- M16C_002c-M32C-and-SH2A-processors-2525 However, with H8/300 target, it does not accept any argument and test case compilation fails with an error message: error: wrong number of arguments specified for function_vector attribute This patch fixes this problem. 2. Addressing mode support: Currently, even for function vectors, GCC generates instruction 'jsr' in absolute addressing mode which is incorrect. Instead of that, it should be generating 'jsr' in indirect memory addressing mode (@@aa:8). This patch fixes this problem as well. Thanks & Regards, Ajinkya Dhobale KPIT Cummins Infosystems Ltd, Pune (INDIA)