1 %default {"result":"%eax"} 2 /* 3 * Generic 32-bit "lit16" binary operation. Provide an "instr" line 4 * that specifies an instruction that performs "result = eax op ecx". 5 * This could be an x86 instruction or a function call. (If the result 6 * comes back in a register other than eax, you can override "result".) 7 * 8 * For: add-int/lit16, rsub-int, 9 * and-int/lit16, or-int/lit16, xor-int/lit16 10 */ 11 /* binop/lit16 vA, vB, #+CCCC */ 12 movzbl rINSTbl,%eax # eax<- 000000BA 13 sarl $$4,%eax # eax<- B 14 GET_VREG_R %eax %eax # eax<- vB 15 movswl 2(rPC),%ecx # ecx<- ssssCCCC 16 andb $$0xf,rINSTbl # rINST<- A 17 $instr # for example: addl %ecx, %eax 18 SET_VREG $result rINST 19 FETCH_INST_OPCODE 2 %ecx 20 ADVANCE_PC 2 21 GOTO_NEXT_R %ecx 22
