1 /* 2 * Long integer shift. This is different from the generic 32/64-bit 3 * binary operations because vAA/vBB are 64-bit but vCC (the shift 4 * distance) is 32-bit. Also, Dalvik requires us to mask off the low 5 * 6 bits of the shift distance. x86 shifts automatically mask off 6 * the low 5 bits of %cl, so have to handle the 64 > shiftcount > 31 7 * case specially. 8 */ 9 /* shr-long vAA, vBB, vCC */ 10 /* ecx gets shift count */ 11 /* Need to spill rIBASE */ 12 /* rINSTw gets AA */ 13 movzbl 2(rPC), %eax # eax <- BB 14 movzbl 3(rPC), %ecx # ecx <- CC 15 movl rIBASE, LOCAL0(%esp) 16 GET_VREG_HIGH rIBASE, %eax # rIBASE <- v[BB+1] 17 GET_VREG %ecx, %ecx # ecx <- vCC 18 GET_VREG %eax, %eax # eax <- v[BB+0] 19 shrdl rIBASE, %eax 20 shrl %cl, rIBASE 21 testb $$32, %cl 22 je 2f 23 movl rIBASE, %eax 24 xorl rIBASE, rIBASE 25 2: 26 SET_VREG_HIGH rIBASE, rINST # v[AA+1] <- rIBASE 27 movl LOCAL0(%esp), rIBASE 28 SET_VREG %eax, rINST # v[BB+0] <- eax 29 ADVANCE_PC_FETCH_AND_GOTO_NEXT 2 30
