From: Józef Kucia jkucia@codeweavers.com
With style changes.
Signed-off-by: Józef Kucia jkucia@codeweavers.com --- Makefile.am | 1 + libs/vkd3d-shader/checksum.c | 276 +++++++++++++++++++++++ libs/vkd3d-shader/vkd3d_shader_private.h | 6 + 3 files changed, 283 insertions(+) create mode 100644 libs/vkd3d-shader/checksum.c
diff --git a/Makefile.am b/Makefile.am index a16f7ca42ec9..7869b2ea8f62 100644 --- a/Makefile.am +++ b/Makefile.am @@ -70,6 +70,7 @@ libvkd3d_shader_la_SOURCES = \ include/private/vkd3d_debug.h \ include/private/vkd3d_memory.h \ include/private/vkd3d_shader.h \ + libs/vkd3d-shader/checksum.c \ libs/vkd3d-shader/dxbc.c \ libs/vkd3d-shader/spirv.c \ libs/vkd3d-shader/trace.c \ diff --git a/libs/vkd3d-shader/checksum.c b/libs/vkd3d-shader/checksum.c new file mode 100644 index 000000000000..d2929da92635 --- /dev/null +++ b/libs/vkd3d-shader/checksum.c @@ -0,0 +1,276 @@ +/* + * Copyright (C) 2001 Nikos Mavroyanopoulos + * Copyright (C) 2004 Hans Leidekker + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +/* + * This code implements the MD5 message-digest algorithm. + * It is based on code in the public domain written by Colin + * Plumb in 1993. The algorithm is due to Ron Rivest. + * + * Equivalent code is available from RSA Data Security, Inc. + * This code has been tested against that, and is equivalent, + * except that you don't need to include two pages of legalese + * with every copy. + * + * To compute the message digest of a chunk of bytes, declare an + * md5_ctx structure, pass it to md5_init, call md5_update as + * needed on buffers full of bytes, and then call md5_final, which + * will fill a supplied 16-byte array with the digest. + */ + +#include "vkd3d_shader_private.h" + +struct md5_ctx +{ + unsigned int i[2]; + unsigned int buf[4]; + unsigned char in[64]; + unsigned char digest[16]; +}; + +/* The four core functions - F1 is optimized somewhat */ + +/* #define F1(x, y, z) (x & y | ~x & z) */ +#define F1(x, y, z) (z ^ (x & (y ^ z))) +#define F2(x, y, z) F1(z, x, y) +#define F3(x, y, z) (x ^ y ^ z) +#define F4(x, y, z) (y ^ (x | ~z)) + +/* This is the central step in the MD5 algorithm. */ +#define MD5STEP(f, w, x, y, z, data, s) \ + (w += f(x, y, z) + data, w = w << s | w >> (32 - s), w += x) + +/* + * The core of the MD5 algorithm, this alters an existing MD5 hash to + * reflect the addition of 16 longwords of new data. md5_update blocks + * the data and converts bytes into longwords for this routine. + */ +static void md5_transform(unsigned int buf[4], const unsigned int in[16]) +{ + unsigned int a, b, c, d; + + a = buf[0]; + b = buf[1]; + c = buf[2]; + d = buf[3]; + + MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); + MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); + MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); + MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); + MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); + MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); + MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); + MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); + MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); + MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); + MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); + MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); + MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); + MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); + MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); + MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); + + MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); + MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); + MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); + MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); + MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); + MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); + MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); + MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); + MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); + MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); + MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); + MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); + MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); + MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); + MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); + MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); + + MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); + MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); + MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); + MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); + MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); + MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); + MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); + MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); + MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); + MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); + MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); + MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); + MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); + MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); + MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); + MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); + + MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); + MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); + MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); + MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); + MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); + MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); + MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); + MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); + MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); + MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); + MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); + MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); + MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); + MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); + MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); + MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); + + buf[0] += a; + buf[1] += b; + buf[2] += c; + buf[3] += d; +} + +/* + * Note: this code is harmless on little-endian machines. + */ +static void byte_reverse(unsigned char *buf, unsigned longs) +{ + unsigned int t; + + do + { + t = ((unsigned)buf[3] << 8 | buf[2]) << 16 | + ((unsigned)buf[1] << 8 | buf[0]); + *(unsigned int *)buf = t; + buf += 4; + } while (--longs); +} + +/* + * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious + * initialization constants. + */ +void md5_init(struct md5_ctx *ctx) +{ + ctx->buf[0] = 0x67452301; + ctx->buf[1] = 0xefcdab89; + ctx->buf[2] = 0x98badcfe; + ctx->buf[3] = 0x10325476; + + ctx->i[0] = ctx->i[1] = 0; +} + +/* + * Update context to reflect the concatenation of another buffer full + * of bytes. + */ +void md5_update(struct md5_ctx *ctx, const unsigned char *buf, unsigned int len) +{ + unsigned int t; + + /* Update bitcount */ + t = ctx->i[0]; + + if ((ctx->i[0] = t + (len << 3)) < t) + ctx->i[1]++; /* Carry from low to high */ + + ctx->i[1] += len >> 29; + t = (t >> 3) & 0x3f; + + /* Handle any leading odd-sized chunks */ + if (t) + { + unsigned char *p = (unsigned char *)ctx->in + t; + t = 64 - t; + + if (len < t) + { + memcpy(p, buf, len); + return; + } + + memcpy(p, buf, t); + byte_reverse(ctx->in, 16); + + md5_transform(ctx->buf, (unsigned int *)ctx->in); + + buf += t; + len -= t; + } + + /* Process data in 64-byte chunks */ + while (len >= 64) + { + memcpy(ctx->in, buf, 64); + byte_reverse(ctx->in, 16); + + md5_transform(ctx->buf, (unsigned int *)ctx->in); + + buf += 64; + len -= 64; + } + + /* Handle any remaining bytes of data. */ + memcpy(ctx->in, buf, len); +} + +/* + * Final wrapup - pad to 64-byte boundary with the bit pattern + * 1 0* (64-bit count of bits processed, MSB-first) + */ +void md5_final(struct md5_ctx *ctx) +{ + unsigned int count; + unsigned char *p; + + /* Compute number of bytes mod 64 */ + count = (ctx->i[0] >> 3) & 0x3F; + + /* Set the first char of padding to 0x80. This is safe since there is + always at least one byte free */ + p = ctx->in + count; + *p++ = 0x80; + + /* Bytes of padding needed to make 64 bytes */ + count = 64 - 1 - count; + + /* Pad out to 56 mod 64 */ + if (count < 8) + { + /* Two lots of padding: Pad the first block to 64 bytes */ + memset(p, 0, count); + byte_reverse(ctx->in, 16); + md5_transform(ctx->buf, (unsigned int *)ctx->in); + + /* Now fill the next block with 56 bytes */ + memset(ctx->in, 0, 56); + } + else + { + /* Pad block to 56 bytes */ + memset(p, 0, count - 8); + } + + byte_reverse(ctx->in, 14); + + /* Append length in bits and transform */ + ((unsigned int *)ctx->in)[14] = ctx->i[0]; + ((unsigned int *)ctx->in)[15] = ctx->i[1]; + + md5_transform(ctx->buf, (unsigned int *)ctx->in); + byte_reverse((unsigned char *)ctx->buf, 4); + memcpy(ctx->digest, ctx->buf, 16); +} diff --git a/libs/vkd3d-shader/vkd3d_shader_private.h b/libs/vkd3d-shader/vkd3d_shader_private.h index afa002b83616..e0fad6852e53 100644 --- a/libs/vkd3d-shader/vkd3d_shader_private.h +++ b/libs/vkd3d-shader/vkd3d_shader_private.h @@ -815,6 +815,12 @@ int vkd3d_dxbc_compiler_generate_spirv(struct vkd3d_dxbc_compiler *compiler, struct vkd3d_shader_code *spirv) DECLSPEC_HIDDEN; void vkd3d_dxbc_compiler_destroy(struct vkd3d_dxbc_compiler *compiler) DECLSPEC_HIDDEN;
+struct md5_ctx; + +void md5_init(struct md5_ctx *ctx) DECLSPEC_HIDDEN; +void md5_update(struct md5_ctx *ctx, const unsigned char *buf, unsigned int len) DECLSPEC_HIDDEN; +void md5_final(struct md5_ctx *ctx) DECLSPEC_HIDDEN; + static inline enum vkd3d_component_type vkd3d_component_type_from_data_type( enum vkd3d_data_type data_type) {