C++ (Cpp) NEED_OP Examples

Example #1

File: lzo1x_decompress_safe.c Project: efidroid/uefi_apps_EFIDroidUi

int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
			  unsigned char *out, size_t *out_len)
{
	unsigned char *op;
	const unsigned char *ip;
	size_t t, next;
	size_t state = 0;
	const unsigned char *m_pos;
	const unsigned char * const ip_end = in + in_len;
	unsigned char * const op_end = out + *out_len;

	op = out;
	ip = in;

	if (unlikely(in_len < 3))
		goto input_overrun;
	if (*ip > 17) {
		t = *ip++ - 17;
		if (t < 4) {
			next = t;
			goto match_next;
		}
		goto copy_literal_run;
	}

	for (;;) {
		t = *ip++;
		if (t < 16) {
			if (likely(state == 0)) {
				if (unlikely(t == 0)) {
					size_t offset;
					const unsigned char *ip_last = ip;

					while (unlikely(*ip == 0)) {
						ip++;
						NEED_IP(1);
					}
					offset = ip - ip_last;
					if (unlikely(offset > MAX_255_COUNT))
						return LZO_E_ERROR;

					offset = (offset << 8) - offset;
					t += offset + 15 + *ip++;
				}
				t += 3;
copy_literal_run:
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
				if (likely(HAVE_IP(t + 15) && HAVE_OP(t + 15))) {
					const unsigned char *ie = ip + t;
					unsigned char *oe = op + t;
					do {
						COPY8(op, ip);
						op += 8;
						ip += 8;
						COPY8(op, ip);
						op += 8;
						ip += 8;
					} while (ip < ie);
					ip = ie;
					op = oe;
				} else
#endif
				{
					NEED_OP(t);
					NEED_IP(t + 3);
					do {
						*op++ = *ip++;
					} while (--t > 0);
				}
				state = 4;
				continue;
			} else if (state != 4) {
				next = t & 3;
				m_pos = op - 1;
				m_pos -= t >> 2;
				m_pos -= *ip++ << 2;
				TEST_LB(m_pos);
				NEED_OP(2);
				op[0] = m_pos[0];
				op[1] = m_pos[1];
				op += 2;
				goto match_next;
			} else {
				next = t & 3;
				m_pos = op - (1 + M2_MAX_OFFSET);
				m_pos -= t >> 2;
				m_pos -= *ip++ << 2;
				t = 3;
			}
		} else if (t >= 64) {

Example #2

File: lzo1x_decompress_safe.c Project: Coolexe/shooter-ics-crc-3.0.16-294f767

int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
			              unsigned char *out, size_t *out_len)
{
	unsigned char *op;
	const unsigned char *ip;
	size_t t, next;
	size_t state = 0;
	const unsigned char *m_pos;
	const unsigned char * const ip_end = in + in_len;
	unsigned char * const op_end = out + *out_len;

	op = out;
	ip = in;

	if (unlikely(in_len < 3))
		goto input_overrun;
	if (*ip > 17) {
		t = *ip++ - 17;
		if (t < 4) {
			next = t;
			goto match_next;
		}
		goto copy_literal_run;
	}

	for (;;) {
		t = *ip++;
		if (t < 16) {
			if (likely(state == 0)) {
				if (unlikely(t == 0)) {
					while (unlikely(*ip == 0)) {
						t += 255;
						ip++;
						NEED_IP(1);
					}
					t += 15 + *ip++;
				}
				t += 3;
copy_literal_run:
				if (likely(HAVE_IP(t + 15) && HAVE_OP(t + 15))) {
					const unsigned char *ie = ip + t;
					unsigned char *oe = op + t;
					do {
						COPY8(op, ip);
						op += 8;
						ip += 8;
						COPY8(op, ip);
						op += 8;
						ip += 8;
					} while (ip < ie);
					ip = ie;
					op = oe;
				} else {
					NEED_OP(t);
					NEED_IP(t + 3);
					do {
						*op++ = *ip++;
					} while (--t > 0);
				}
				state = 4;
				continue;
			} else if (state != 4) {
				next = t & 3;
				m_pos = op - 1;
				m_pos -= t >> 2;
				m_pos -= *ip++ << 2;
				TEST_LB(m_pos);
				NEED_OP(2);
				op[0] = m_pos[0];
				op[1] = m_pos[1];
				op += 2;
				goto match_next;
			} else {
				next = t & 3;
				m_pos = op - (1 + M2_MAX_OFFSET);
				m_pos -= t >> 2;
				m_pos -= *ip++ << 2;
				t = 3;
			}
		} else if (t >= 64) {