Hi everybody, I think that I get a wrong result with mtfsfi instruction.
I think to get a solution, see below. Could you confirm my opinion ? Thanks, Claude translate.c l344:EXTRACT_HELPER(crbD, 21, 5); ... l375:EXTRACT_HELPER(FPIMM, 20, 4); <======FPIMM must be (FPIMM, 12, 4) or crbB >> 1 for mtfsfi; IMM is bits[16-19] of the instruction in PPC programming environnement 32bit (p8-135). IMM is not one bit before crbD. ... l2049 /* mtfsfi */ GEN_HANDLER(mtfsfi, 0x3F, 0x06, 0x04, 0x006f0800, PPC_FLOAT) { int bf, sh; if (unlikely(!ctx->fpu_enabled)) { GEN_EXCP_NO_FP(ctx); return; } bf = crbD(ctx->opcode) >> 2; <======================Ok bits[6-8] sh = 7 - bf; gen_optimize_fprf(); gen_op_set_FT0(FPIMM(ctx->opcode) << (4 * sh)); <===================FPIMM is not correct, does not return the right value but bits [8-11] gen_reset_fpstatus(); gen_op_store_fpscr(1 << sh); if (unlikely(Rc(ctx->opcode) != 0)) { gen_op_load_fpcc(); gen_op_set_Rc0(); } /* We can raise a differed exception */ gen_op_float_check_status(); }