diff options
Diffstat (limited to 'vm/mterp/armv7-a/OP_DIV_INT_LIT8.S')
| -rw-r--r-- | vm/mterp/armv7-a/OP_DIV_INT_LIT8.S | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/vm/mterp/armv7-a/OP_DIV_INT_LIT8.S b/vm/mterp/armv7-a/OP_DIV_INT_LIT8.S new file mode 100644 index 000000000..08d67fa4e --- /dev/null +++ b/vm/mterp/armv7-a/OP_DIV_INT_LIT8.S @@ -0,0 +1,30 @@ +%default {} +%verify "executed" + /* + * Specialized 32-bit binary operation + * + * Performs "r0 = r0 div r1". The selection between sdiv or the gcc helper + * depends on the compile time value of __ARM_ARCH_EXT_IDIV__ (defined for + * ARMv7 CPUs that have hardware division support). + * + * div-int/lit8 + * + */ + FETCH_S(r3, 1) @ r3<- ssssCCBB (sign-extended for CC) + mov r9, rINST, lsr #8 @ r9<- AA + and r2, r3, #255 @ r2<- BB + GET_VREG(r0, r2) @ r0<- vBB + movs r1, r3, asr #8 @ r1<- ssssssCC (sign extended) + @cmp r1, #0 @ is second operand zero? + beq common_errDivideByZero + FETCH_ADVANCE_INST(2) @ advance rPC, load rINST + +#ifdef __ARM_ARCH_EXT_IDIV__ + sdiv r0, r0, r1 @ r0<- op +#else + bl __aeabi_idiv @ r0<- op, r0-r3 changed +#endif + GET_INST_OPCODE(ip) @ extract opcode from rINST + SET_VREG(r0, r9) @ vAA<- r0 + GOTO_OPCODE(ip) @ jump to next instruction + /* 10-12 instructions */ |