blob: 3888361bc5a0c04b83fbc9d17bd4e295ffdeafca [file] [log] [blame]
%default {}
/*
* Specialized 32-bit binary operation
*
* Performs "r1 = r0 rem r1". The selection between sdiv block or the gcc helper
* depends on the compile time value of __ARM_ARCH_EXT_IDIV__ (defined for
* ARMv7 CPUs that have hardware division support).
*
* NOTE: idivmod returns quotient in r0 and remainder in r1
*
* rem-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 r2, r0, r1
mls r1, r1, r2, r0 @ r1<- op
#else
bl __aeabi_idivmod @ r1<- op, r0-r3 changed
#endif
GET_INST_OPCODE ip @ extract opcode from rINST
SET_VREG r1, r9 @ vAA<- r1
GOTO_OPCODE ip @ jump to next instruction
/* 10-12 instructions */