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 * On entry: 14 * a0 = target dalvik register address 15 * a1 = op1 address 16 * a2 = op2 address 17 * 18 * IMPORTANT: you may specify "chkzero" or "preinstr" but not both. 19 */ 20 move rOBJ, a0 # save a0 21 #ifdef SOFT_FLOAT 22 move t0, a1 # save a1 23 move t1, a2 # save a2 24 LOAD64(rARG0, rARG1, t0) # 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 $preinstr # optional op 31 $instr # result<- op, a0-a3 changed 32 STORE64(rRESULT0, rRESULT1, rOBJ) 33 #else 34 LOAD64_F(fa0, fa0f, a1) 35 LOAD64_F(fa1, fa1f, a2) 36 .if $chkzero 37 li.d ft0, 0 38 c.eq.d fcc0, fa1, ft0 39 bc1t fcc0, common_errDivideByZero 40 .endif 41 $preinstr # optional op 42 $instr_f 43 STORE64_F(fv0, fv0f, rOBJ) 44 #endif 45 RETURN 46
