Function CMGT_advsimd_zero

arch/arm64/disassembler/decode2.c:2479–2535

cmgt_advsimd_zero.xml */

/* cmgt_advsimd_zero.xml */
int CMGT_advsimd_zero(context *ctx, Instruction *instr)
{
	int rc = DECODE_STATUS_UNMATCHED;
	/* class iclass_sisd */
	/* 01|U=0|11110|size=xx|10000|opcode[4:1]=0100|op=0|10|Rn=xxxxx|Rd=xxxxx */
	if((INSWORD & 0xFF3FFC00)==0x5E208800) {
		decode_fields32(ENC_CMGT_ASISDMISC_Z, ctx, instr);
		ctx->d = UINT(ctx->Rd);
		ctx->n = UINT(ctx->Rn);
		if(ctx->size!=3) {
			UNDEFINED;
		}
		ctx->esize = (8) << (UINT(ctx->size));
		ctx->datasize = ctx->esize;
		ctx->elements = 1;
		if(!((ctx->op<<1)|ctx->U)) {
			ctx->comparison = CompareOp_GT;
		}
		else if(((ctx->op<<1)|ctx->U)==1) {
			ctx->comparison = CompareOp_GE;
		}
		else if(((ctx->op<<1)|ctx->U)==2) {
			ctx->comparison = CompareOp_EQ;
		}
		else if(((ctx->op<<1)|ctx->U)==3) {
			ctx->comparison = CompareOp_LE;
		}
		OK(ENC_CMGT_ASISDMISC_Z);
	}
	/* class iclass_simd */
	/* 0|Q=x|U=0|01110|size=xx|10000|opcode[4:1]=0100|op=0|10|Rn=xxxxx|Rd=xxxxx */
	if((INSWORD & 0xBF3FFC00)==0xE208800) {
		decode_fields32(ENC_CMGT_ASIMDMISC_Z, ctx, instr);
		ctx->d = UINT(ctx->Rd);
		ctx->n = UINT(ctx->Rn);
		if(((ctx->size<<1)|ctx->Q)==6) {
			UNDEFINED;
		}
		ctx->esize = (8) << (UINT(ctx->size));
		ctx->datasize = (ctx->Q==1) ? 0x80 : 0x40;
		ctx->elements = ((ctx->esize) ? ((ctx->datasize) / (ctx->esize)) : 0);
		if(!((ctx->op<<1)|ctx->U)) {
			ctx->comparison = CompareOp_GT;
		}
		else if(((ctx->op<<1)|ctx->U)==1) {
			ctx->comparison = CompareOp_GE;
		}
		else if(((ctx->op<<1)|ctx->U)==2) {
			ctx->comparison = CompareOp_EQ;
		}
		else if(((ctx->op<<1)|ctx->U)==3) {
			ctx->comparison = CompareOp_LE;
		}
		OK(ENC_CMGT_ASIMDMISC_Z);
	}
	return rc;
}