Function SQRDMLSH_advsimd_elt

arch/arm64/disassembler/decode2.c:22697–22759

sqrdmlsh_advsimd_elt.xml */

/* sqrdmlsh_advsimd_elt.xml */
int SQRDMLSH_advsimd_elt(context *ctx, Instruction *instr)
{
	int rc = DECODE_STATUS_UNMATCHED;
	/* class iclass_2reg_scalar */
	/* 01|U=1|11111|size=xx|L=x|M=x|Rm=xxxx|opcode[3:2]=11|S=1|opcode[0]=1|H=x|0|Rn=xxxxx|Rd=xxxxx */
	if((INSWORD & 0xFF00F400)==0x7F00F000) {
		decode_fields32(ENC_SQRDMLSH_ASISDELEM_R, ctx, instr);
		if(!HaveQRDMLAHExt()) {
			UNDEFINED;
		}
		ctx->idxdsize = (ctx->H==1) ? 0x80 : 0x40;
		if(ctx->size==1) {
			ctx->index = UINT(((ctx->H<<2)|(ctx->L<<1)|ctx->M));
			ctx->Rmhi = 0;
		}
		else if(ctx->size==2) {
			ctx->index = UINT(((ctx->H<<1)|ctx->L));
			ctx->Rmhi = ctx->M;
		}
		else {
			UNDEFINED;
		}
		ctx->d = UINT(ctx->Rd);
		ctx->n = UINT(ctx->Rn);
		ctx->m = UINT(((ctx->Rmhi<<4)|ctx->Rm));
		ctx->esize = (8) << (UINT(ctx->size));
		ctx->datasize = ctx->esize;
		ctx->elements = 1;
		ctx->rounding = TRUE;
		ctx->sub_op = (ctx->S==1);
		OK(ENC_SQRDMLSH_ASISDELEM_R);
	}
	/* class iclass_2reg_element */
	/* 0|Q=x|U=1|01111|size=xx|L=x|M=x|Rm=xxxx|opcode[3:2]=11|S=1|opcode[0]=1|H=x|0|Rn=xxxxx|Rd=xxxxx */
	if((INSWORD & 0xBF00F400)==0x2F00F000) {
		decode_fields32(ENC_SQRDMLSH_ASIMDELEM_R, ctx, instr);
		if(!HaveQRDMLAHExt()) {
			UNDEFINED;
		}
		ctx->idxdsize = (ctx->H==1) ? 0x80 : 0x40;
		if(ctx->size==1) {
			ctx->index = UINT(((ctx->H<<2)|(ctx->L<<1)|ctx->M));
			ctx->Rmhi = 0;
		}
		else if(ctx->size==2) {
			ctx->index = UINT(((ctx->H<<1)|ctx->L));
			ctx->Rmhi = ctx->M;
		}
		else {
			UNDEFINED;
		}
		ctx->d = UINT(ctx->Rd);
		ctx->n = UINT(ctx->Rn);
		ctx->m = UINT(((ctx->Rmhi<<4)|ctx->Rm));
		ctx->esize = (8) << (UINT(ctx->size));
		ctx->datasize = (ctx->Q==1) ? 0x80 : 0x40;
		ctx->elements = ((ctx->esize) ? ((ctx->datasize) / (ctx->esize)) : 0);
		ctx->rounding = TRUE;