| %default {"preinstr":"", "chkzero":"0"} |
| /* |
| * Generic 64-bit binary operation. Provide an "instr" line that |
| * specifies an instruction that performs "result = a0-a1 op a2-a3". |
| * This could be an MIPS instruction or a function call. |
| * If "chkzero" is set to 1, we perform a divide-by-zero check on |
| * vCC (a1). Useful for integer division and modulus. |
| * |
| * for: add-long, sub-long, div-long, rem-long, and-long, or-long, |
| * xor-long, add-double, sub-double, mul-double, div-double, |
| * rem-double |
| * |
| * IMPORTANT: you may specify "chkzero" or "preinstr" but not both. |
| */ |
| /* binop vAA, vBB, vCC */ |
| FETCH(a0, 1) # a0 <- CCBB |
| GET_OPA(rOBJ) # s5 <- AA |
| and a2, a0, 255 # a2 <- BB |
| srl a3, a0, 8 # a3 <- CC |
| EAS2(rOBJ, rFP, rOBJ) # s5 <- &fp[AA] |
| EAS2(a2, rFP, a2) # a2 <- &fp[BB] |
| EAS2(t1, rFP, a3) # a3 <- &fp[CC] |
| #ifdef SOFT_FLOAT |
| LOAD64(rARG0, rARG1, a2) # a0/a1 <- vBB/vBB+1 |
| LOAD64(rARG2, rARG3, t1) # a2/a3 <- vCC/vCC+1 |
| .if $chkzero |
| or t0, rARG2, rARG3 # second arg (a2-a3) is zero? |
| beqz t0, common_errDivideByZero |
| .endif |
| #else |
| LOAD64_F(fa0, fa0f, a2) |
| LOAD64_F(fa1, fa1f, t1) |
| .if $chkzero |
| li.d ft0, 0 |
| c.eq.d fcc0, fa1, ft0 |
| bc1t fcc0, common_errDivideByZero |
| .endif |
| #endif |
| 1: |
| FETCH_ADVANCE_INST(2) # advance rPC, load rINST |
| $preinstr # optional op |
| #ifdef SOFT_FLOAT |
| $instr # result <- op, a0-a3 changed |
| STORE64(rRESULT0, rRESULT1, rOBJ) |
| #else |
| $instr_f |
| STORE64_F(fv0, fv0f, rOBJ) |
| #endif |
| GET_INST_OPCODE(t0) # extract opcode from rINST |
| GOTO_OPCODE(t0) # jump to next instruction |
| /* 14-17 instructions */ |
| |
