| Serguei Katkov | 6cbe081 | 2016-03-01 16:10:48 +0600 | [diff] [blame] | 1 | %default {"result":"","rem":"0"} |
| 2 | /* |
| 3 | * 32-bit div/rem "lit8" binary operation. Handles special case of |
| 4 | * op0=minint & op1=-1 |
| 5 | */ |
| 6 | /* div/rem/lit8 vAA, vBB, #+CC */ |
| 7 | movzbq 2(rPC), %rax # eax <- BB |
| 8 | movsbl 3(rPC), %ecx # ecx <- ssssssCC |
| 9 | GET_VREG %eax, %rax # eax <- rBB |
| 10 | testl %ecx, %ecx |
| 11 | je common_errDivideByZero |
| 12 | cmpl $$-1, %ecx |
| 13 | je 2f |
| 14 | cdq # rax <- sign-extended of eax |
| 15 | idivl %ecx |
| 16 | 1: |
| 17 | SET_VREG $result, rINSTq # vA <- result |
| 18 | ADVANCE_PC_FETCH_AND_GOTO_NEXT 2 |
| 19 | 2: |
| 20 | .if $rem |
| 21 | xorl $result, $result |
| 22 | .else |
| 23 | negl $result |
| 24 | .endif |
| 25 | jmp 1b |