diff options
Diffstat (limited to 'vm/mterp/x86/bindiv2addr.S')
| -rw-r--r-- | vm/mterp/x86/bindiv2addr.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/vm/mterp/x86/bindiv2addr.S b/vm/mterp/x86/bindiv2addr.S new file mode 100644 index 0000000..cc415be --- /dev/null +++ b/vm/mterp/x86/bindiv2addr.S @@ -0,0 +1,33 @@ +%default {"result":"","special":""} + /* + * 32-bit binary div/rem operation. Handles special case of op0=minint and + * op1=-1. + */ + /* div/rem/2addr vA, vB */ + movzx rINSTbl,%ecx # eax<- BA + SPILL(rIBASE) + sarl $$4,%ecx # ecx<- B + GET_VREG_R %ecx %ecx # eax<- vBB + andb $$0xf,rINSTbl # rINST<- A + GET_VREG_R %eax rINST # eax<- vBB + cmpl $$0,%ecx + je common_errDivideByZero + cmpl $$-1,%ecx + jne .L${opcode}_continue_div2addr + cmpl $$0x80000000,%eax + jne .L${opcode}_continue_div2addr + movl $special,$result + SET_VREG $result rINST + UNSPILL(rIBASE) + FETCH_INST_OPCODE 1 %ecx + ADVANCE_PC 1 + GOTO_NEXT_R %ecx + +.L${opcode}_continue_div2addr: + cltd + idivl %ecx + SET_VREG $result rINST + UNSPILL(rIBASE) + FETCH_INST_OPCODE 1 %ecx + ADVANCE_PC 1 + GOTO_NEXT_R %ecx |