1 // SPDX-License-Identifier: GPL-2.0-or-later
23 	{ D4, D2, I2, N0 },
24 	{ D4, I2, D2, N0 },
27 	{ D2, I2, D4, N0 },
28 	{ D2, I2, D2, I2 },
29 	{ D2, I2, I2, D2 },
30 	{ D2, I2, I2, I2 },
31 	{ D2, I2, I4, N0 },
32 	{ I2, D2, D4, N0 },
34 	{ I2, D2, I2, D2 },
35 	{ I2, D2, I2, I2 },
36 	{ I2, D2, I4, N0 },
38 	{ I2, I2, D2, I2 },
39 	{ I2, I2, I2, D2 },
43 	{ I4, D2, I2, N0 },
44 	{ I4, I2, D2, N0 },
74 		return -EINVAL;  in __split_next_bits()
77 	ret = next_bits(p, &tmp, n - s);  in __split_next_bits()
89 	u8 *in = p->in, b = p->bit, bits = b + n;  in next_bits()
93 		return -EINVAL;  in next_bits()
101 	else if (p->ilen < 8 && bits > 32 && bits <= 56)  in next_bits()
103 	else if (p->ilen < 4 && bits > 16 && bits <= 24)  in next_bits()
106 	if (DIV_ROUND_UP(bits, 8) > p->ilen)  in next_bits()
107 		return -EOVERFLOW;  in next_bits()
110 		*d = *in >> (8 - bits);  in next_bits()
112 		*d = be16_to_cpu(get_unaligned((__be16 *)in)) >> (16 - bits);  in next_bits()
114 		*d = be32_to_cpu(get_unaligned((__be32 *)in)) >> (32 - bits);  in next_bits()
116 		*d = be64_to_cpu(get_unaligned((__be64 *)in)) >> (64 - bits);  in next_bits()
118 	*d &= GENMASK_ULL(n - 1, 0);  in next_bits()
120 	p->bit += n;  in next_bits()
122 	if (p->bit > 7) {  in next_bits()
123 		p->in += p->bit / 8;  in next_bits()
124 		p->ilen -= p->bit / 8;  in next_bits()
125 		p->bit %= 8;  in next_bits()
136 	if (n > p->olen)  in do_data()
137 		return -ENOSPC;  in do_data()
145 		put_unaligned(cpu_to_be16((u16)v), (__be16 *)p->out);  in do_data()
148 		put_unaligned(cpu_to_be32((u32)v), (__be32 *)p->out);  in do_data()
151 		put_unaligned(cpu_to_be64((u64)v), (__be64 *)p->out);  in do_data()
154 		return -EINVAL;  in do_data()
157 	p->out += n;  in do_data()
158 	p->olen -= n;  in do_data()
165 	u64 index, offset, total = round_down(p->out - p->ostart, 8);  in __do_index()
179 		u64 pos = total - section;  in __do_index()
185 			section -= fsize;  in __do_index()
193 		return -EINVAL;  in __do_index()
203 			 (unsigned long)beN_to_cpu(&p->ostart[offset], size));  in __do_index()
205 	memcpy(p->out, &p->ostart[offset], size);  in __do_index()
206 	p->out += size;  in __do_index()
207 	p->olen -= size;  in __do_index()
222 		return -EINVAL;  in do_index()
231 		return -EINVAL;  in do_op()
249 			return -EINVAL;  in do_op()
265  * Decompress the 842-compressed buffer of length @ilen at @in
268  * The compressed buffer must be only a single 842-compressed buffer,
310 				return -EINVAL;  in sw842_decompress()
316 				return -ENOSPC;  in sw842_decompress()
318 			while (rep-- > 0) {  in sw842_decompress()
319 				memcpy(p.out, p.out - 8, 8);  in sw842_decompress()
321 				p.olen -= 8;  in sw842_decompress()
330 				return -ENOSPC;  in sw842_decompress()
334 			p.olen -= 8;  in sw842_decompress()
346 				return -EINVAL;  in sw842_decompress()
348 			while (bytes-- > 0) {  in sw842_decompress()
354 				p.olen--;  in sw842_decompress()
385 	if (crc != (u64)crc32_be(0, out, total - p.olen)) {  in sw842_decompress()
387 		return -EINVAL;  in sw842_decompress()
390 	if (unlikely((total - p.olen) > UINT_MAX))  in sw842_decompress()
391 		return -ENOSPC;  in sw842_decompress()
393 	*olen = total - p.olen;  in sw842_decompress()