1 %default {"preinstr":"", "chkzero":"0"} 2 /* 3 * Generic 64-bit binary operation. Provide an "instr" line that 4 * specifies an instruction that performs "result = a0-a1 op a2-a3". 5 * This could be an MIPS instruction or a function call. 6 * If "chkzero" is set to 1, we perform a divide-by-zero check on 7 * vCC (a1). Useful for integer division and modulus. 8 * 9 * for: add-long, sub-long, div-long, rem-long, and-long, or-long, 10 * xor-long, add-double, sub-double, mul-double, div-double, 11 * rem-double 12 * 13 * IMPORTANT: you may specify "chkzero" or "preinstr" but not both. 14 */ 15 /* binop vAA, vBB, vCC */ 16 FETCH(a0, 1) # a0 <- CCBB 17 GET_OPA(rOBJ) # s5 <- AA 18 and a2, a0, 255 # a2 <- BB 19 srl a3, a0, 8 # a3 <- CC 20 EAS2(rOBJ, rFP, rOBJ) # s5 <- &fp[AA] 21 EAS2(a2, rFP, a2) # a2 <- &fp[BB] 22 EAS2(t1, rFP, a3) # a3 <- &fp[CC] 23 #ifdef SOFT_FLOAT 24 LOAD64(rARG0, rARG1, a2) # a0/a1 <- vBB/vBB+1 25 LOAD64(rARG2, rARG3, t1) # a2/a3 <- vCC/vCC+1 26 .if $chkzero 27 or t0, rARG2, rARG3 # second arg (a2-a3) is zero? 28 beqz t0, common_errDivideByZero 29 .endif 30 #else 31 LOAD64_F(fa0, fa0f, a2) 32 LOAD64_F(fa1, fa1f, t1) 33 .if $chkzero 34 li.d ft0, 0 35 c.eq.d fcc0, fa1, ft0 36 bc1t fcc0, common_errDivideByZero 37 .endif 38 #endif 39 1: 40 FETCH_ADVANCE_INST(2) # advance rPC, load rINST 41 $preinstr # optional op 42 #ifdef SOFT_FLOAT 43 $instr # result <- op, a0-a3 changed 44 STORE64(rRESULT0, rRESULT1, rOBJ) 45 #else 46 $instr_f 47 STORE64_F(fv0, fv0f, rOBJ) 48 #endif 49 GET_INST_OPCODE(t0) # extract opcode from rINST 50 GOTO_OPCODE(t0) # jump to next instruction 51 /* 14-17 instructions */ 52 53
