diff options
Diffstat (limited to 'src/third-party/base64/lib')
43 files changed, 4457 insertions, 0 deletions
diff --git a/src/third-party/base64/lib/Makefile.am b/src/third-party/base64/lib/Makefile.am new file mode 100644 index 0000000..7058b4b --- /dev/null +++ b/src/third-party/base64/lib/Makefile.am @@ -0,0 +1,23 @@ + +noinst_HEADERS = \ + ../include/libbase64.h \ + arch/generic/32/enc_loop.c \ + arch/generic/32/dec_loop.c \ + arch/generic/enc_tail.c \ + arch/generic/dec_tail.c \ + arch/generic/64/enc_loop.c \ + arch/generic/enc_head.c \ + arch/generic/dec_head.c \ + tables/tables.h \ + tables/table_dec_32bit.h \ + tables/table_enc_12bit.h \ + codecs.h \ + config.h \ + env.h + +noinst_LIBRARIES = libbase64.a + +libbase64_a_SOURCES = \ + lib.c \ + arch/generic/codec.c \ + tables/tables.c diff --git a/src/third-party/base64/lib/arch/avx/codec.c b/src/third-party/base64/lib/arch/avx/codec.c new file mode 100644 index 0000000..a7a963d --- /dev/null +++ b/src/third-party/base64/lib/arch/avx/codec.c @@ -0,0 +1,42 @@ +#include <stdint.h> +#include <stddef.h> +#include <stdlib.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#if HAVE_AVX +#include <immintrin.h> + +#include "../ssse3/dec_reshuffle.c" +#include "../ssse3/dec_loop.c" +#include "../ssse3/enc_translate.c" +#include "../ssse3/enc_reshuffle.c" +#include "../ssse3/enc_loop.c" + +#endif // HAVE_AVX + +BASE64_ENC_FUNCTION(avx) +{ +#if HAVE_AVX + #include "../generic/enc_head.c" + enc_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/enc_tail.c" +#else + BASE64_ENC_STUB +#endif +} + +BASE64_DEC_FUNCTION(avx) +{ +#if HAVE_AVX + #include "../generic/dec_head.c" + dec_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/dec_tail.c" +#else + BASE64_DEC_STUB +#endif +} diff --git a/src/third-party/base64/lib/arch/avx2/codec.c b/src/third-party/base64/lib/arch/avx2/codec.c new file mode 100644 index 0000000..0498548 --- /dev/null +++ b/src/third-party/base64/lib/arch/avx2/codec.c @@ -0,0 +1,42 @@ +#include <stdint.h> +#include <stddef.h> +#include <stdlib.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#if HAVE_AVX2 +#include <immintrin.h> + +#include "dec_reshuffle.c" +#include "dec_loop.c" +#include "enc_translate.c" +#include "enc_reshuffle.c" +#include "enc_loop.c" + +#endif // HAVE_AVX2 + +BASE64_ENC_FUNCTION(avx2) +{ +#if HAVE_AVX2 + #include "../generic/enc_head.c" + enc_loop_avx2(&s, &slen, &o, &olen); + #include "../generic/enc_tail.c" +#else + BASE64_ENC_STUB +#endif +} + +BASE64_DEC_FUNCTION(avx2) +{ +#if HAVE_AVX2 + #include "../generic/dec_head.c" + dec_loop_avx2(&s, &slen, &o, &olen); + #include "../generic/dec_tail.c" +#else + BASE64_DEC_STUB +#endif +} diff --git a/src/third-party/base64/lib/arch/avx2/dec_loop.c b/src/third-party/base64/lib/arch/avx2/dec_loop.c new file mode 100644 index 0000000..f959fc4 --- /dev/null +++ b/src/third-party/base64/lib/arch/avx2/dec_loop.c @@ -0,0 +1,110 @@ +static inline int +dec_loop_avx2_inner (const uint8_t **s, uint8_t **o, size_t *rounds) +{ + const __m256i lut_lo = _mm256_setr_epi8( + 0x15, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, + 0x11, 0x11, 0x13, 0x1A, 0x1B, 0x1B, 0x1B, 0x1A, + 0x15, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, + 0x11, 0x11, 0x13, 0x1A, 0x1B, 0x1B, 0x1B, 0x1A); + + const __m256i lut_hi = _mm256_setr_epi8( + 0x10, 0x10, 0x01, 0x02, 0x04, 0x08, 0x04, 0x08, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, + 0x10, 0x10, 0x01, 0x02, 0x04, 0x08, 0x04, 0x08, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10); + + const __m256i lut_roll = _mm256_setr_epi8( + 0, 16, 19, 4, -65, -65, -71, -71, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 16, 19, 4, -65, -65, -71, -71, + 0, 0, 0, 0, 0, 0, 0, 0); + + const __m256i mask_2F = _mm256_set1_epi8(0x2F); + + // Load input: + __m256i str = _mm256_loadu_si256((__m256i *) *s); + + // See the SSSE3 decoder for an explanation of the algorithm. + const __m256i hi_nibbles = _mm256_and_si256(_mm256_srli_epi32(str, 4), mask_2F); + const __m256i lo_nibbles = _mm256_and_si256(str, mask_2F); + const __m256i hi = _mm256_shuffle_epi8(lut_hi, hi_nibbles); + const __m256i lo = _mm256_shuffle_epi8(lut_lo, lo_nibbles); + + if (!_mm256_testz_si256(lo, hi)) { + return 0; + } + + const __m256i eq_2F = _mm256_cmpeq_epi8(str, mask_2F); + const __m256i roll = _mm256_shuffle_epi8(lut_roll, _mm256_add_epi8(eq_2F, hi_nibbles)); + + // Now simply add the delta values to the input: + str = _mm256_add_epi8(str, roll); + + // Reshuffle the input to packed 12-byte output format: + str = dec_reshuffle(str); + + // Store the output: + _mm256_storeu_si256((__m256i *) *o, str); + + *s += 32; + *o += 24; + *rounds -= 1; + + return 1; +} + +static inline void +dec_loop_avx2 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 45) { + return; + } + + // Process blocks of 32 bytes per round. Because 8 extra zero bytes are + // written after the output, ensure that there will be at least 13 + // bytes of input data left to cover the gap. (11 data bytes and up to + // two end-of-string markers.) + size_t rounds = (*slen - 13) / 32; + + *slen -= rounds * 32; // 32 bytes consumed per round + *olen += rounds * 24; // 24 bytes produced per round + + do { + if (rounds >= 8) { + if (dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds)) { + continue; + } + break; + } + if (rounds >= 4) { + if (dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds)) { + continue; + } + break; + } + if (rounds >= 2) { + if (dec_loop_avx2_inner(s, o, &rounds) && + dec_loop_avx2_inner(s, o, &rounds)) { + continue; + } + break; + } + dec_loop_avx2_inner(s, o, &rounds); + break; + + } while (rounds > 0); + + // Adjust for any rounds that were skipped: + *slen += rounds * 32; + *olen -= rounds * 24; +} diff --git a/src/third-party/base64/lib/arch/avx2/dec_reshuffle.c b/src/third-party/base64/lib/arch/avx2/dec_reshuffle.c new file mode 100644 index 0000000..f351809 --- /dev/null +++ b/src/third-party/base64/lib/arch/avx2/dec_reshuffle.c @@ -0,0 +1,34 @@ +static inline __m256i +dec_reshuffle (const __m256i in) +{ + // in, lower lane, bits, upper case are most significant bits, lower + // case are least significant bits: + // 00llllll 00kkkkLL 00jjKKKK 00JJJJJJ + // 00iiiiii 00hhhhII 00ggHHHH 00GGGGGG + // 00ffffff 00eeeeFF 00ddEEEE 00DDDDDD + // 00cccccc 00bbbbCC 00aaBBBB 00AAAAAA + + const __m256i merge_ab_and_bc = _mm256_maddubs_epi16(in, _mm256_set1_epi32(0x01400140)); + // 0000kkkk LLllllll 0000JJJJ JJjjKKKK + // 0000hhhh IIiiiiii 0000GGGG GGggHHHH + // 0000eeee FFffffff 0000DDDD DDddEEEE + // 0000bbbb CCcccccc 0000AAAA AAaaBBBB + + __m256i out = _mm256_madd_epi16(merge_ab_and_bc, _mm256_set1_epi32(0x00011000)); + // 00000000 JJJJJJjj KKKKkkkk LLllllll + // 00000000 GGGGGGgg HHHHhhhh IIiiiiii + // 00000000 DDDDDDdd EEEEeeee FFffffff + // 00000000 AAAAAAaa BBBBbbbb CCcccccc + + // Pack bytes together in each lane: + out = _mm256_shuffle_epi8(out, _mm256_setr_epi8( + 2, 1, 0, 6, 5, 4, 10, 9, 8, 14, 13, 12, -1, -1, -1, -1, + 2, 1, 0, 6, 5, 4, 10, 9, 8, 14, 13, 12, -1, -1, -1, -1)); + // 00000000 00000000 00000000 00000000 + // LLllllll KKKKkkkk JJJJJJjj IIiiiiii + // HHHHhhhh GGGGGGgg FFffffff EEEEeeee + // DDDDDDdd CCcccccc BBBBbbbb AAAAAAaa + + // Pack lanes: + return _mm256_permutevar8x32_epi32(out, _mm256_setr_epi32(0, 1, 2, 4, 5, 6, -1, -1)); +} diff --git a/src/third-party/base64/lib/arch/avx2/enc_loop.c b/src/third-party/base64/lib/arch/avx2/enc_loop.c new file mode 100644 index 0000000..b9e2736 --- /dev/null +++ b/src/third-party/base64/lib/arch/avx2/enc_loop.c @@ -0,0 +1,89 @@ +static inline void +enc_loop_avx2_inner_first (const uint8_t **s, uint8_t **o) +{ + // First load is done at s - 0 to not get a segfault: + __m256i src = _mm256_loadu_si256((__m256i *) *s); + + // Shift by 4 bytes, as required by enc_reshuffle: + src = _mm256_permutevar8x32_epi32(src, _mm256_setr_epi32(0, 0, 1, 2, 3, 4, 5, 6)); + + // Reshuffle, translate, store: + src = enc_reshuffle(src); + src = enc_translate(src); + _mm256_storeu_si256((__m256i *) *o, src); + + // Subsequent loads will be done at s - 4, set pointer for next round: + *s += 20; + *o += 32; +} + +static inline void +enc_loop_avx2_inner (const uint8_t **s, uint8_t **o) +{ + // Load input: + __m256i src = _mm256_loadu_si256((__m256i *) *s); + + // Reshuffle, translate, store: + src = enc_reshuffle(src); + src = enc_translate(src); + _mm256_storeu_si256((__m256i *) *o, src); + + *s += 24; + *o += 32; +} + +static inline void +enc_loop_avx2 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 32) { + return; + } + + // Process blocks of 24 bytes at a time. Because blocks are loaded 32 + // bytes at a time an offset of -4, ensure that there will be at least + // 4 remaining bytes after the last round, so that the final read will + // not pass beyond the bounds of the input buffer: + size_t rounds = (*slen - 4) / 24; + + *slen -= rounds * 24; // 24 bytes consumed per round + *olen += rounds * 32; // 32 bytes produced per round + + // The first loop iteration requires special handling to ensure that + // the read, which is done at an offset, does not underflow the buffer: + enc_loop_avx2_inner_first(s, o); + rounds--; + + while (rounds > 0) { + if (rounds >= 8) { + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + rounds -= 8; + continue; + } + if (rounds >= 4) { + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + rounds -= 4; + continue; + } + if (rounds >= 2) { + enc_loop_avx2_inner(s, o); + enc_loop_avx2_inner(s, o); + rounds -= 2; + continue; + } + enc_loop_avx2_inner(s, o); + break; + } + + // Add the offset back: + *s += 4; +} diff --git a/src/third-party/base64/lib/arch/avx2/enc_reshuffle.c b/src/third-party/base64/lib/arch/avx2/enc_reshuffle.c new file mode 100644 index 0000000..ba16690 --- /dev/null +++ b/src/third-party/base64/lib/arch/avx2/enc_reshuffle.c @@ -0,0 +1,83 @@ +static inline __m256i +enc_reshuffle (const __m256i input) +{ + // Translation of the SSSE3 reshuffling algorithm to AVX2. This one + // works with shifted (4 bytes) input in order to be able to work + // efficiently in the two 128-bit lanes. + + // Input, bytes MSB to LSB: + // 0 0 0 0 x w v u t s r q p o n m + // l k j i h g f e d c b a 0 0 0 0 + + const __m256i in = _mm256_shuffle_epi8(input, _mm256_set_epi8( + 10, 11, 9, 10, + 7, 8, 6, 7, + 4, 5, 3, 4, + 1, 2, 0, 1, + + 14, 15, 13, 14, + 11, 12, 10, 11, + 8, 9, 7, 8, + 5, 6, 4, 5)); + // in, bytes MSB to LSB: + // w x v w + // t u s t + // q r p q + // n o m n + // k l j k + // h i g h + // e f d e + // b c a b + + const __m256i t0 = _mm256_and_si256(in, _mm256_set1_epi32(0x0FC0FC00)); + // bits, upper case are most significant bits, lower case are least + // significant bits. + // 0000wwww XX000000 VVVVVV00 00000000 + // 0000tttt UU000000 SSSSSS00 00000000 + // 0000qqqq RR000000 PPPPPP00 00000000 + // 0000nnnn OO000000 MMMMMM00 00000000 + // 0000kkkk LL000000 JJJJJJ00 00000000 + // 0000hhhh II000000 GGGGGG00 00000000 + // 0000eeee FF000000 DDDDDD00 00000000 + // 0000bbbb CC000000 AAAAAA00 00000000 + + const __m256i t1 = _mm256_mulhi_epu16(t0, _mm256_set1_epi32(0x04000040)); + // 00000000 00wwwwXX 00000000 00VVVVVV + // 00000000 00ttttUU 00000000 00SSSSSS + // 00000000 00qqqqRR 00000000 00PPPPPP + // 00000000 00nnnnOO 00000000 00MMMMMM + // 00000000 00kkkkLL 00000000 00JJJJJJ + // 00000000 00hhhhII 00000000 00GGGGGG + // 00000000 00eeeeFF 00000000 00DDDDDD + // 00000000 00bbbbCC 00000000 00AAAAAA + + const __m256i t2 = _mm256_and_si256(in, _mm256_set1_epi32(0x003F03F0)); + // 00000000 00xxxxxx 000000vv WWWW0000 + // 00000000 00uuuuuu 000000ss TTTT0000 + // 00000000 00rrrrrr 000000pp QQQQ0000 + // 00000000 00oooooo 000000mm NNNN0000 + // 00000000 00llllll 000000jj KKKK0000 + // 00000000 00iiiiii 000000gg HHHH0000 + // 00000000 00ffffff 000000dd EEEE0000 + // 00000000 00cccccc 000000aa BBBB0000 + + const __m256i t3 = _mm256_mullo_epi16(t2, _mm256_set1_epi32(0x01000010)); + // 00xxxxxx 00000000 00vvWWWW 00000000 + // 00uuuuuu 00000000 00ssTTTT 00000000 + // 00rrrrrr 00000000 00ppQQQQ 00000000 + // 00oooooo 00000000 00mmNNNN 00000000 + // 00llllll 00000000 00jjKKKK 00000000 + // 00iiiiii 00000000 00ggHHHH 00000000 + // 00ffffff 00000000 00ddEEEE 00000000 + // 00cccccc 00000000 00aaBBBB 00000000 + + return _mm256_or_si256(t1, t3); + // 00xxxxxx 00wwwwXX 00vvWWWW 00VVVVVV + // 00uuuuuu 00ttttUU 00ssTTTT 00SSSSSS + // 00rrrrrr 00qqqqRR 00ppQQQQ 00PPPPPP + // 00oooooo 00nnnnOO 00mmNNNN 00MMMMMM + // 00llllll 00kkkkLL 00jjKKKK 00JJJJJJ + // 00iiiiii 00hhhhII 00ggHHHH 00GGGGGG + // 00ffffff 00eeeeFF 00ddEEEE 00DDDDDD + // 00cccccc 00bbbbCC 00aaBBBB 00AAAAAA +} diff --git a/src/third-party/base64/lib/arch/avx2/enc_translate.c b/src/third-party/base64/lib/arch/avx2/enc_translate.c new file mode 100644 index 0000000..46173cd --- /dev/null +++ b/src/third-party/base64/lib/arch/avx2/enc_translate.c @@ -0,0 +1,30 @@ +static inline __m256i +enc_translate (const __m256i in) +{ + // A lookup table containing the absolute offsets for all ranges: + const __m256i lut = _mm256_setr_epi8( + 65, 71, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -19, -16, 0, 0, + 65, 71, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -19, -16, 0, 0); + + // Translate values 0..63 to the Base64 alphabet. There are five sets: + // # From To Abs Index Characters + // 0 [0..25] [65..90] +65 0 ABCDEFGHIJKLMNOPQRSTUVWXYZ + // 1 [26..51] [97..122] +71 1 abcdefghijklmnopqrstuvwxyz + // 2 [52..61] [48..57] -4 [2..11] 0123456789 + // 3 [62] [43] -19 12 + + // 4 [63] [47] -16 13 / + + // Create LUT indices from the input. The index for range #0 is right, + // others are 1 less than expected: + __m256i indices = _mm256_subs_epu8(in, _mm256_set1_epi8(51)); + + // mask is 0xFF (-1) for range #[1..4] and 0x00 for range #0: + const __m256i mask = _mm256_cmpgt_epi8(in, _mm256_set1_epi8(25)); + + // Subtract -1, so add 1 to indices for range #[1..4]. All indices are + // now correct: + indices = _mm256_sub_epi8(indices, mask); + + // Add offsets to input values: + return _mm256_add_epi8(in, _mm256_shuffle_epi8(lut, indices)); +} diff --git a/src/third-party/base64/lib/arch/generic/32/dec_loop.c b/src/third-party/base64/lib/arch/generic/32/dec_loop.c new file mode 100644 index 0000000..8a8260f --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/32/dec_loop.c @@ -0,0 +1,86 @@ +static inline int +dec_loop_generic_32_inner (const uint8_t **s, uint8_t **o, size_t *rounds) +{ + const uint32_t str + = base64_table_dec_32bit_d0[(*s)[0]] + | base64_table_dec_32bit_d1[(*s)[1]] + | base64_table_dec_32bit_d2[(*s)[2]] + | base64_table_dec_32bit_d3[(*s)[3]]; + +#if BASE64_LITTLE_ENDIAN + + // LUTs for little-endian set MSB in case of invalid character: + if (str & UINT32_C(0x80000000)) { + return 0; + } +#else + // LUTs for big-endian set LSB in case of invalid character: + if (str & UINT32_C(1)) { + return 0; + } +#endif + // Store the output: + memcpy(*o, &str, sizeof (str)); + + *s += 4; + *o += 3; + *rounds -= 1; + + return 1; +} + +static inline void +dec_loop_generic_32 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 8) { + return; + } + + // Process blocks of 4 bytes per round. Because one extra zero byte is + // written after the output, ensure that there will be at least 4 bytes + // of input data left to cover the gap. (Two data bytes and up to two + // end-of-string markers.) + size_t rounds = (*slen - 4) / 4; + + *slen -= rounds * 4; // 4 bytes consumed per round + *olen += rounds * 3; // 3 bytes produced per round + + do { + if (rounds >= 8) { + if (dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds)) { + continue; + } + break; + } + if (rounds >= 4) { + if (dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds)) { + continue; + } + break; + } + if (rounds >= 2) { + if (dec_loop_generic_32_inner(s, o, &rounds) && + dec_loop_generic_32_inner(s, o, &rounds)) { + continue; + } + break; + } + dec_loop_generic_32_inner(s, o, &rounds); + break; + + } while (rounds > 0); + + // Adjust for any rounds that were skipped: + *slen += rounds * 4; + *olen -= rounds * 3; +} diff --git a/src/third-party/base64/lib/arch/generic/32/enc_loop.c b/src/third-party/base64/lib/arch/generic/32/enc_loop.c new file mode 100644 index 0000000..f4870a7 --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/32/enc_loop.c @@ -0,0 +1,73 @@ +static inline void +enc_loop_generic_32_inner (const uint8_t **s, uint8_t **o) +{ + uint32_t src; + + // Load input: + memcpy(&src, *s, sizeof (src)); + + // Reorder to 32-bit big-endian, if not already in that format. The + // workset must be in big-endian, otherwise the shifted bits do not + // carry over properly among adjacent bytes: + src = BASE64_HTOBE32(src); + + // Two indices for the 12-bit lookup table: + const size_t index0 = (src >> 20) & 0xFFFU; + const size_t index1 = (src >> 8) & 0xFFFU; + + // Table lookup and store: + memcpy(*o + 0, base64_table_enc_12bit + index0, 2); + memcpy(*o + 2, base64_table_enc_12bit + index1, 2); + + *s += 3; + *o += 4; +} + +static inline void +enc_loop_generic_32 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 4) { + return; + } + + // Process blocks of 3 bytes at a time. Because blocks are loaded 4 + // bytes at a time, ensure that there will be at least one remaining + // byte after the last round, so that the final read will not pass + // beyond the bounds of the input buffer: + size_t rounds = (*slen - 1) / 3; + + *slen -= rounds * 3; // 3 bytes consumed per round + *olen += rounds * 4; // 4 bytes produced per round + + do { + if (rounds >= 8) { + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + rounds -= 8; + continue; + } + if (rounds >= 4) { + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + rounds -= 4; + continue; + } + if (rounds >= 2) { + enc_loop_generic_32_inner(s, o); + enc_loop_generic_32_inner(s, o); + rounds -= 2; + continue; + } + enc_loop_generic_32_inner(s, o); + break; + + } while (rounds > 0); +} diff --git a/src/third-party/base64/lib/arch/generic/64/enc_loop.c b/src/third-party/base64/lib/arch/generic/64/enc_loop.c new file mode 100644 index 0000000..0840bc7 --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/64/enc_loop.c @@ -0,0 +1,77 @@ +static inline void +enc_loop_generic_64_inner (const uint8_t **s, uint8_t **o) +{ + uint64_t src; + + // Load input: + memcpy(&src, *s, sizeof (src)); + + // Reorder to 64-bit big-endian, if not already in that format. The + // workset must be in big-endian, otherwise the shifted bits do not + // carry over properly among adjacent bytes: + src = BASE64_HTOBE64(src); + + // Four indices for the 12-bit lookup table: + const size_t index0 = (src >> 52) & 0xFFFU; + const size_t index1 = (src >> 40) & 0xFFFU; + const size_t index2 = (src >> 28) & 0xFFFU; + const size_t index3 = (src >> 16) & 0xFFFU; + + // Table lookup and store: + memcpy(*o + 0, base64_table_enc_12bit + index0, 2); + memcpy(*o + 2, base64_table_enc_12bit + index1, 2); + memcpy(*o + 4, base64_table_enc_12bit + index2, 2); + memcpy(*o + 6, base64_table_enc_12bit + index3, 2); + + *s += 6; + *o += 8; +} + +static inline void +enc_loop_generic_64 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 8) { + return; + } + + // Process blocks of 6 bytes at a time. Because blocks are loaded 8 + // bytes at a time, ensure that there will be at least 2 remaining + // bytes after the last round, so that the final read will not pass + // beyond the bounds of the input buffer: + size_t rounds = (*slen - 2) / 6; + + *slen -= rounds * 6; // 6 bytes consumed per round + *olen += rounds * 8; // 8 bytes produced per round + + do { + if (rounds >= 8) { + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + rounds -= 8; + continue; + } + if (rounds >= 4) { + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + rounds -= 4; + continue; + } + if (rounds >= 2) { + enc_loop_generic_64_inner(s, o); + enc_loop_generic_64_inner(s, o); + rounds -= 2; + continue; + } + enc_loop_generic_64_inner(s, o); + break; + + } while (rounds > 0); +} diff --git a/src/third-party/base64/lib/arch/generic/codec.c b/src/third-party/base64/lib/arch/generic/codec.c new file mode 100644 index 0000000..8dd5af2 --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/codec.c @@ -0,0 +1,39 @@ +#include <stdint.h> +#include <stddef.h> +#include <string.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#if BASE64_WORDSIZE == 32 +# include "32/enc_loop.c" +#elif BASE64_WORDSIZE == 64 +# include "64/enc_loop.c" +#endif + +#if BASE64_WORDSIZE >= 32 +# include "32/dec_loop.c" +#endif + +BASE64_ENC_FUNCTION(plain) +{ + #include "enc_head.c" +#if BASE64_WORDSIZE == 32 + enc_loop_generic_32(&s, &slen, &o, &olen); +#elif BASE64_WORDSIZE == 64 + enc_loop_generic_64(&s, &slen, &o, &olen); +#endif + #include "enc_tail.c" +} + +BASE64_DEC_FUNCTION(plain) +{ + #include "dec_head.c" +#if BASE64_WORDSIZE >= 32 + dec_loop_generic_32(&s, &slen, &o, &olen); +#endif + #include "dec_tail.c" +} diff --git a/src/third-party/base64/lib/arch/generic/dec_head.c b/src/third-party/base64/lib/arch/generic/dec_head.c new file mode 100644 index 0000000..179a31b --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/dec_head.c @@ -0,0 +1,37 @@ +int ret = 0; +const uint8_t *s = (const uint8_t *) src; +uint8_t *o = (uint8_t *) out; +uint8_t q; + +// Use local temporaries to avoid cache thrashing: +size_t olen = 0; +size_t slen = srclen; +struct base64_state st; +st.eof = state->eof; +st.bytes = state->bytes; +st.carry = state->carry; + +// If we previously saw an EOF or an invalid character, bail out: +if (st.eof) { + *outlen = 0; + ret = 0; + // If there was a trailing '=' to check, check it: + if (slen && (st.eof == BASE64_AEOF)) { + state->bytes = 0; + state->eof = BASE64_EOF; + ret = ((base64_table_dec_8bit[*s++] == 254) && (slen == 1)) ? 1 : 0; + } + return ret; +} + +// Turn four 6-bit numbers into three bytes: +// out[0] = 11111122 +// out[1] = 22223333 +// out[2] = 33444444 + +// Duff's device again: +switch (st.bytes) +{ + for (;;) + { + case 0: diff --git a/src/third-party/base64/lib/arch/generic/dec_tail.c b/src/third-party/base64/lib/arch/generic/dec_tail.c new file mode 100644 index 0000000..e64f724 --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/dec_tail.c @@ -0,0 +1,91 @@ + if (slen-- == 0) { + ret = 1; + break; + } + if ((q = base64_table_dec_8bit[*s++]) >= 254) { + st.eof = BASE64_EOF; + // Treat character '=' as invalid for byte 0: + break; + } + st.carry = q << 2; + st.bytes++; + + // Deliberate fallthrough: + BASE64_FALLTHROUGH + + case 1: if (slen-- == 0) { + ret = 1; + break; + } + if ((q = base64_table_dec_8bit[*s++]) >= 254) { + st.eof = BASE64_EOF; + // Treat character '=' as invalid for byte 1: + break; + } + *o++ = st.carry | (q >> 4); + st.carry = q << 4; + st.bytes++; + olen++; + + // Deliberate fallthrough: + BASE64_FALLTHROUGH + + case 2: if (slen-- == 0) { + ret = 1; + break; + } + if ((q = base64_table_dec_8bit[*s++]) >= 254) { + st.bytes++; + // When q == 254, the input char is '='. + // Check if next byte is also '=': + if (q == 254) { + if (slen-- != 0) { + st.bytes = 0; + // EOF: + st.eof = BASE64_EOF; + q = base64_table_dec_8bit[*s++]; + ret = ((q == 254) && (slen == 0)) ? 1 : 0; + break; + } + else { + // Almost EOF + st.eof = BASE64_AEOF; + ret = 1; + break; + } + } + // If we get here, there was an error: + break; + } + *o++ = st.carry | (q >> 2); + st.carry = q << 6; + st.bytes++; + olen++; + + // Deliberate fallthrough: + BASE64_FALLTHROUGH + + case 3: if (slen-- == 0) { + ret = 1; + break; + } + if ((q = base64_table_dec_8bit[*s++]) >= 254) { + st.bytes = 0; + st.eof = BASE64_EOF; + // When q == 254, the input char is '='. Return 1 and EOF. + // When q == 255, the input char is invalid. Return 0 and EOF. + ret = ((q == 254) && (slen == 0)) ? 1 : 0; + break; + } + *o++ = st.carry | q; + st.carry = 0; + st.bytes = 0; + olen++; + } +} + +state->eof = st.eof; +state->bytes = st.bytes; +state->carry = st.carry; +*outlen = olen; +return ret; diff --git a/src/third-party/base64/lib/arch/generic/enc_head.c b/src/third-party/base64/lib/arch/generic/enc_head.c new file mode 100644 index 0000000..38d60b2 --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/enc_head.c @@ -0,0 +1,24 @@ +// Assume that *out is large enough to contain the output. +// Theoretically it should be 4/3 the length of src. +const uint8_t *s = (const uint8_t *) src; +uint8_t *o = (uint8_t *) out; + +// Use local temporaries to avoid cache thrashing: +size_t olen = 0; +size_t slen = srclen; +struct base64_state st; +st.bytes = state->bytes; +st.carry = state->carry; + +// Turn three bytes into four 6-bit numbers: +// in[0] = 00111111 +// in[1] = 00112222 +// in[2] = 00222233 +// in[3] = 00333333 + +// Duff's device, a for() loop inside a switch() statement. Legal! +switch (st.bytes) +{ + for (;;) + { + case 0: diff --git a/src/third-party/base64/lib/arch/generic/enc_tail.c b/src/third-party/base64/lib/arch/generic/enc_tail.c new file mode 100644 index 0000000..cbd5733 --- /dev/null +++ b/src/third-party/base64/lib/arch/generic/enc_tail.c @@ -0,0 +1,34 @@ + if (slen-- == 0) { + break; + } + *o++ = base64_table_enc_6bit[*s >> 2]; + st.carry = (*s++ << 4) & 0x30; + st.bytes++; + olen += 1; + + // Deliberate fallthrough: + BASE64_FALLTHROUGH + + case 1: if (slen-- == 0) { + break; + } + *o++ = base64_table_enc_6bit[st.carry | (*s >> 4)]; + st.carry = (*s++ << 2) & 0x3C; + st.bytes++; + olen += 1; + + // Deliberate fallthrough: + BASE64_FALLTHROUGH + + case 2: if (slen-- == 0) { + break; + } + *o++ = base64_table_enc_6bit[st.carry | (*s >> 6)]; + *o++ = base64_table_enc_6bit[*s++ & 0x3F]; + st.bytes = 0; + olen += 2; + } +} +state->bytes = st.bytes; +state->carry = st.carry; +*outlen = olen; diff --git a/src/third-party/base64/lib/arch/neon32/codec.c b/src/third-party/base64/lib/arch/neon32/codec.c new file mode 100644 index 0000000..a0b27f9 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon32/codec.c @@ -0,0 +1,77 @@ +#include <stdint.h> +#include <stddef.h> +#include <string.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#ifdef __arm__ +# if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && HAVE_NEON32 +# define BASE64_USE_NEON32 +# endif +#endif + +#ifdef BASE64_USE_NEON32 +#include <arm_neon.h> + +// Only enable inline assembly on supported compilers. +#if defined(__GNUC__) || defined(__clang__) +#define BASE64_NEON32_USE_ASM +#endif + +static inline uint8x16_t +vqtbl1q_u8 (const uint8x16_t lut, const uint8x16_t indices) +{ + // NEON32 only supports 64-bit wide lookups in 128-bit tables. Emulate + // the NEON64 `vqtbl1q_u8` intrinsic to do 128-bit wide lookups. + uint8x8x2_t lut2; + uint8x8x2_t result; + + lut2.val[0] = vget_low_u8(lut); + lut2.val[1] = vget_high_u8(lut); + + result.val[0] = vtbl2_u8(lut2, vget_low_u8(indices)); + result.val[1] = vtbl2_u8(lut2, vget_high_u8(indices)); + + return vcombine_u8(result.val[0], result.val[1]); +} + +#include "../generic/32/dec_loop.c" +#include "../generic/32/enc_loop.c" +#include "dec_loop.c" +#include "enc_reshuffle.c" +#include "enc_translate.c" +#include "enc_loop.c" + +#endif // BASE64_USE_NEON32 + +// Stride size is so large on these NEON 32-bit functions +// (48 bytes encode, 32 bytes decode) that we inline the +// uint32 codec to stay performant on smaller inputs. + +BASE64_ENC_FUNCTION(neon32) +{ +#ifdef BASE64_USE_NEON32 + #include "../generic/enc_head.c" + enc_loop_neon32(&s, &slen, &o, &olen); + enc_loop_generic_32(&s, &slen, &o, &olen); + #include "../generic/enc_tail.c" +#else + BASE64_ENC_STUB +#endif +} + +BASE64_DEC_FUNCTION(neon32) +{ +#ifdef BASE64_USE_NEON32 + #include "../generic/dec_head.c" + dec_loop_neon32(&s, &slen, &o, &olen); + dec_loop_generic_32(&s, &slen, &o, &olen); + #include "../generic/dec_tail.c" +#else + BASE64_DEC_STUB +#endif +} diff --git a/src/third-party/base64/lib/arch/neon32/dec_loop.c b/src/third-party/base64/lib/arch/neon32/dec_loop.c new file mode 100644 index 0000000..2216b39 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon32/dec_loop.c @@ -0,0 +1,106 @@ +static inline int +is_nonzero (const uint8x16_t v) +{ + uint64_t u64; + const uint64x2_t v64 = vreinterpretq_u64_u8(v); + const uint32x2_t v32 = vqmovn_u64(v64); + + vst1_u64(&u64, vreinterpret_u64_u32(v32)); + return u64 != 0; +} + +static inline uint8x16_t +delta_lookup (const uint8x16_t v) +{ + const uint8x8_t lut = { + 0, 16, 19, 4, (uint8_t) -65, (uint8_t) -65, (uint8_t) -71, (uint8_t) -71, + }; + + return vcombine_u8( + vtbl1_u8(lut, vget_low_u8(v)), + vtbl1_u8(lut, vget_high_u8(v))); +} + +static inline uint8x16_t +dec_loop_neon32_lane (uint8x16_t *lane) +{ + // See the SSSE3 decoder for an explanation of the algorithm. + const uint8x16_t lut_lo = { + 0x15, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, + 0x11, 0x11, 0x13, 0x1A, 0x1B, 0x1B, 0x1B, 0x1A + }; + + const uint8x16_t lut_hi = { + 0x10, 0x10, 0x01, 0x02, 0x04, 0x08, 0x04, 0x08, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10 + }; + + const uint8x16_t mask_0F = vdupq_n_u8(0x0F); + const uint8x16_t mask_2F = vdupq_n_u8(0x2F); + + const uint8x16_t hi_nibbles = vshrq_n_u8(*lane, 4); + const uint8x16_t lo_nibbles = vandq_u8(*lane, mask_0F); + const uint8x16_t eq_2F = vceqq_u8(*lane, mask_2F); + + const uint8x16_t hi = vqtbl1q_u8(lut_hi, hi_nibbles); + const uint8x16_t lo = vqtbl1q_u8(lut_lo, lo_nibbles); + + // Now simply add the delta values to the input: + *lane = vaddq_u8(*lane, delta_lookup(vaddq_u8(eq_2F, hi_nibbles))); + + // Return the validity mask: + return vandq_u8(lo, hi); +} + +static inline void +dec_loop_neon32 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 64) { + return; + } + + // Process blocks of 64 bytes per round. Unlike the SSE codecs, no + // extra trailing zero bytes are written, so it is not necessary to + // reserve extra input bytes: + size_t rounds = *slen / 64; + + *slen -= rounds * 64; // 64 bytes consumed per round + *olen += rounds * 48; // 48 bytes produced per round + + do { + uint8x16x3_t dec; + + // Load 64 bytes and deinterleave: + uint8x16x4_t str = vld4q_u8(*s); + + // Decode each lane, collect a mask of invalid inputs: + const uint8x16_t classified + = dec_loop_neon32_lane(&str.val[0]) + | dec_loop_neon32_lane(&str.val[1]) + | dec_loop_neon32_lane(&str.val[2]) + | dec_loop_neon32_lane(&str.val[3]); + + // Check for invalid input: if any of the delta values are + // zero, fall back on bytewise code to do error checking and + // reporting: + if (is_nonzero(classified)) { + break; + } + + // Compress four bytes into three: + dec.val[0] = vorrq_u8(vshlq_n_u8(str.val[0], 2), vshrq_n_u8(str.val[1], 4)); + dec.val[1] = vorrq_u8(vshlq_n_u8(str.val[1], 4), vshrq_n_u8(str.val[2], 2)); + dec.val[2] = vorrq_u8(vshlq_n_u8(str.val[2], 6), str.val[3]); + + // Interleave and store decoded result: + vst3q_u8(*o, dec); + + *s += 64; + *o += 48; + + } while (--rounds > 0); + + // Adjust for any rounds that were skipped: + *slen += rounds * 64; + *olen -= rounds * 48; +} diff --git a/src/third-party/base64/lib/arch/neon32/enc_loop.c b/src/third-party/base64/lib/arch/neon32/enc_loop.c new file mode 100644 index 0000000..e9e8e28 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon32/enc_loop.c @@ -0,0 +1,169 @@ +#ifdef BASE64_NEON32_USE_ASM +static inline void +enc_loop_neon32_inner_asm (const uint8_t **s, uint8_t **o) +{ + // This function duplicates the functionality of enc_loop_neon32_inner, + // but entirely with inline assembly. This gives a significant speedup + // over using NEON intrinsics, which do not always generate very good + // code. The logic of the assembly is directly lifted from the + // intrinsics version, so it can be used as a guide to this code. + + // Temporary registers, used as scratch space. + uint8x16_t tmp0, tmp1, tmp2, tmp3; + uint8x16_t mask0, mask1, mask2, mask3; + + // A lookup table containing the absolute offsets for all ranges. + const uint8x16_t lut = { + 65U, 71U, 252U, 252U, + 252U, 252U, 252U, 252U, + 252U, 252U, 252U, 252U, + 237U, 240U, 0U, 0U + }; + + // Numeric constants. + const uint8x16_t n51 = vdupq_n_u8(51); + const uint8x16_t n25 = vdupq_n_u8(25); + const uint8x16_t n63 = vdupq_n_u8(63); + + __asm__ ( + + // Load 48 bytes and deinterleave. The bytes are loaded to + // hard-coded registers q12, q13 and q14, to ensure that they + // are contiguous. Increment the source pointer. + "vld3.8 {d24, d26, d28}, [%[src]]! \n\t" + "vld3.8 {d25, d27, d29}, [%[src]]! \n\t" + + // Reshuffle the bytes using temporaries. + "vshr.u8 %q[t0], q12, #2 \n\t" + "vshr.u8 %q[t1], q13, #4 \n\t" + "vshr.u8 %q[t2], q14, #6 \n\t" + "vsli.8 %q[t1], q12, #4 \n\t" + "vsli.8 %q[t2], q13, #2 \n\t" + "vand.u8 %q[t1], %q[t1], %q[n63] \n\t" + "vand.u8 %q[t2], %q[t2], %q[n63] \n\t" + "vand.u8 %q[t3], q14, %q[n63] \n\t" + + // t0..t3 are the reshuffled inputs. Create LUT indices. + "vqsub.u8 q12, %q[t0], %q[n51] \n\t" + "vqsub.u8 q13, %q[t1], %q[n51] \n\t" + "vqsub.u8 q14, %q[t2], %q[n51] \n\t" + "vqsub.u8 q15, %q[t3], %q[n51] \n\t" + + // Create the mask for range #0. + "vcgt.u8 %q[m0], %q[t0], %q[n25] \n\t" + "vcgt.u8 %q[m1], %q[t1], %q[n25] \n\t" + "vcgt.u8 %q[m2], %q[t2], %q[n25] \n\t" + "vcgt.u8 %q[m3], %q[t3], %q[n25] \n\t" + + // Subtract -1 to correct the LUT indices. + "vsub.u8 q12, %q[m0] \n\t" + "vsub.u8 q13, %q[m1] \n\t" + "vsub.u8 q14, %q[m2] \n\t" + "vsub.u8 q15, %q[m3] \n\t" + + // Lookup the delta values. + "vtbl.u8 d24, {%q[lut]}, d24 \n\t" + "vtbl.u8 d25, {%q[lut]}, d25 \n\t" + "vtbl.u8 d26, {%q[lut]}, d26 \n\t" + "vtbl.u8 d27, {%q[lut]}, d27 \n\t" + "vtbl.u8 d28, {%q[lut]}, d28 \n\t" + "vtbl.u8 d29, {%q[lut]}, d29 \n\t" + "vtbl.u8 d30, {%q[lut]}, d30 \n\t" + "vtbl.u8 d31, {%q[lut]}, d31 \n\t" + + // Add the delta values. + "vadd.u8 q12, %q[t0] \n\t" + "vadd.u8 q13, %q[t1] \n\t" + "vadd.u8 q14, %q[t2] \n\t" + "vadd.u8 q15, %q[t3] \n\t" + + // Store 64 bytes and interleave. Increment the dest pointer. + "vst4.8 {d24, d26, d28, d30}, [%[dst]]! \n\t" + "vst4.8 {d25, d27, d29, d31}, [%[dst]]! \n\t" + + // Outputs (modified). + : [src] "+r" (*s), + [dst] "+r" (*o), + [t0] "=&w" (tmp0), + [t1] "=&w" (tmp1), + [t2] "=&w" (tmp2), + [t3] "=&w" (tmp3), + [m0] "=&w" (mask0), + [m1] "=&w" (mask1), + [m2] "=&w" (mask2), + [m3] "=&w" (mask3) + + // Inputs (not modified). + : [lut] "w" (lut), + [n25] "w" (n25), + [n51] "w" (n51), + [n63] "w" (n63) + + // Clobbers. + : "d24", "d25", "d26", "d27", "d28", "d29", "d30", "d31" + ); +} +#endif + +static inline void +enc_loop_neon32_inner (const uint8_t **s, uint8_t **o) +{ +#ifdef BASE64_NEON32_USE_ASM + enc_loop_neon32_inner_asm(s, o); +#else + // Load 48 bytes and deinterleave: + uint8x16x3_t src = vld3q_u8(*s); + + // Reshuffle: + uint8x16x4_t out = enc_reshuffle(src); + + // Translate reshuffled bytes to the Base64 alphabet: + out = enc_translate(out); + + // Interleave and store output: + vst4q_u8(*o, out); + + *s += 48; + *o += 64; +#endif +} + +static inline void +enc_loop_neon32 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + size_t rounds = *slen / 48; + + *slen -= rounds * 48; // 48 bytes consumed per round + *olen += rounds * 64; // 64 bytes produced per round + + while (rounds > 0) { + if (rounds >= 8) { + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + rounds -= 8; + continue; + } + if (rounds >= 4) { + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + rounds -= 4; + continue; + } + if (rounds >= 2) { + enc_loop_neon32_inner(s, o); + enc_loop_neon32_inner(s, o); + rounds -= 2; + continue; + } + enc_loop_neon32_inner(s, o); + break; + } +} diff --git a/src/third-party/base64/lib/arch/neon32/enc_reshuffle.c b/src/third-party/base64/lib/arch/neon32/enc_reshuffle.c new file mode 100644 index 0000000..d6e97cb --- /dev/null +++ b/src/third-party/base64/lib/arch/neon32/enc_reshuffle.c @@ -0,0 +1,31 @@ +static inline uint8x16x4_t +enc_reshuffle (uint8x16x3_t in) +{ + uint8x16x4_t out; + + // Input: + // in[0] = a7 a6 a5 a4 a3 a2 a1 a0 + // in[1] = b7 b6 b5 b4 b3 b2 b1 b0 + // in[2] = c7 c6 c5 c4 c3 c2 c1 c0 + + // Output: + // out[0] = 00 00 a7 a6 a5 a4 a3 a2 + // out[1] = 00 00 a1 a0 b7 b6 b5 b4 + // out[2] = 00 00 b3 b2 b1 b0 c7 c6 + // out[3] = 00 00 c5 c4 c3 c2 c1 c0 + + // Move the input bits to where they need to be in the outputs. Except + // for the first output, the high two bits are not cleared. + out.val[0] = vshrq_n_u8(in.val[0], 2); + out.val[1] = vshrq_n_u8(in.val[1], 4); + out.val[2] = vshrq_n_u8(in.val[2], 6); + out.val[1] = vsliq_n_u8(out.val[1], in.val[0], 4); + out.val[2] = vsliq_n_u8(out.val[2], in.val[1], 2); + + // Clear the high two bits in the second, third and fourth output. + out.val[1] = vandq_u8(out.val[1], vdupq_n_u8(0x3F)); + out.val[2] = vandq_u8(out.val[2], vdupq_n_u8(0x3F)); + out.val[3] = vandq_u8(in.val[2], vdupq_n_u8(0x3F)); + + return out; +} diff --git a/src/third-party/base64/lib/arch/neon32/enc_translate.c b/src/third-party/base64/lib/arch/neon32/enc_translate.c new file mode 100644 index 0000000..e616d54 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon32/enc_translate.c @@ -0,0 +1,57 @@ +static inline uint8x16x4_t +enc_translate (const uint8x16x4_t in) +{ + // A lookup table containing the absolute offsets for all ranges: + const uint8x16_t lut = { + 65U, 71U, 252U, 252U, + 252U, 252U, 252U, 252U, + 252U, 252U, 252U, 252U, + 237U, 240U, 0U, 0U + }; + + const uint8x16_t offset = vdupq_n_u8(51); + + uint8x16x4_t indices, mask, delta, out; + + // Translate values 0..63 to the Base64 alphabet. There are five sets: + // # From To Abs Index Characters + // 0 [0..25] [65..90] +65 0 ABCDEFGHIJKLMNOPQRSTUVWXYZ + // 1 [26..51] [97..122] +71 1 abcdefghijklmnopqrstuvwxyz + // 2 [52..61] [48..57] -4 [2..11] 0123456789 + // 3 [62] [43] -19 12 + + // 4 [63] [47] -16 13 / + + // Create LUT indices from input: + // the index for range #0 is right, others are 1 less than expected: + indices.val[0] = vqsubq_u8(in.val[0], offset); + indices.val[1] = vqsubq_u8(in.val[1], offset); + indices.val[2] = vqsubq_u8(in.val[2], offset); + indices.val[3] = vqsubq_u8(in.val[3], offset); + + // mask is 0xFF (-1) for range #[1..4] and 0x00 for range #0: + mask.val[0] = vcgtq_u8(in.val[0], vdupq_n_u8(25)); + mask.val[1] = vcgtq_u8(in.val[1], vdupq_n_u8(25)); + mask.val[2] = vcgtq_u8(in.val[2], vdupq_n_u8(25)); + mask.val[3] = vcgtq_u8(in.val[3], vdupq_n_u8(25)); + + // Subtract -1, so add 1 to indices for range #[1..4], All indices are + // now correct: + indices.val[0] = vsubq_u8(indices.val[0], mask.val[0]); + indices.val[1] = vsubq_u8(indices.val[1], mask.val[1]); + indices.val[2] = vsubq_u8(indices.val[2], mask.val[2]); + indices.val[3] = vsubq_u8(indices.val[3], mask.val[3]); + + // Lookup delta values: + delta.val[0] = vqtbl1q_u8(lut, indices.val[0]); + delta.val[1] = vqtbl1q_u8(lut, indices.val[1]); + delta.val[2] = vqtbl1q_u8(lut, indices.val[2]); + delta.val[3] = vqtbl1q_u8(lut, indices.val[3]); + + // Add delta values: + out.val[0] = vaddq_u8(in.val[0], delta.val[0]); + out.val[1] = vaddq_u8(in.val[1], delta.val[1]); + out.val[2] = vaddq_u8(in.val[2], delta.val[2]); + out.val[3] = vaddq_u8(in.val[3], delta.val[3]); + + return out; +} diff --git a/src/third-party/base64/lib/arch/neon64/codec.c b/src/third-party/base64/lib/arch/neon64/codec.c new file mode 100644 index 0000000..fc953b2 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon64/codec.c @@ -0,0 +1,92 @@ +#include <stdint.h> +#include <stddef.h> +#include <string.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#ifdef __aarch64__ +# if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && HAVE_NEON64 +# define BASE64_USE_NEON64 +# endif +#endif + +#ifdef BASE64_USE_NEON64 +#include <arm_neon.h> + +// Only enable inline assembly on supported compilers. +#if defined(__GNUC__) || defined(__clang__) +#define BASE64_NEON64_USE_ASM +#endif + +static inline uint8x16x4_t +load_64byte_table (const uint8_t *p) +{ +#ifdef BASE64_NEON64_USE_ASM + + // Force the table to be loaded into contiguous registers. GCC will not + // normally allocate contiguous registers for a `uint8x16x4_t'. These + // registers are chosen to not conflict with the ones in the enc loop. + register uint8x16_t t0 __asm__ ("v8"); + register uint8x16_t t1 __asm__ ("v9"); + register uint8x16_t t2 __asm__ ("v10"); + register uint8x16_t t3 __asm__ ("v11"); + + __asm__ ( + "ld1 {%[t0].16b, %[t1].16b, %[t2].16b, %[t3].16b}, [%[src]], #64 \n\t" + : [src] "+r" (p), + [t0] "=w" (t0), + [t1] "=w" (t1), + [t2] "=w" (t2), + [t3] "=w" (t3) + ); + + return (uint8x16x4_t) { + .val[0] = t0, + .val[1] = t1, + .val[2] = t2, + .val[3] = t3, + }; +#else + return vld1q_u8_x4(p); +#endif +} + +#include "../generic/32/dec_loop.c" +#include "../generic/64/enc_loop.c" +#include "dec_loop.c" +#include "enc_reshuffle.c" +#include "enc_loop.c" + +#endif // BASE64_USE_NEON64 + +// Stride size is so large on these NEON 64-bit functions +// (48 bytes encode, 64 bytes decode) that we inline the +// uint64 codec to stay performant on smaller inputs. + +BASE64_ENC_FUNCTION(neon64) +{ +#ifdef BASE64_USE_NEON64 + #include "../generic/enc_head.c" + enc_loop_neon64(&s, &slen, &o, &olen); + enc_loop_generic_64(&s, &slen, &o, &olen); + #include "../generic/enc_tail.c" +#else + BASE64_ENC_STUB +#endif +} + +BASE64_DEC_FUNCTION(neon64) +{ +#ifdef BASE64_USE_NEON64 + #include "../generic/dec_head.c" + dec_loop_neon64(&s, &slen, &o, &olen); + dec_loop_generic_32(&s, &slen, &o, &olen); + #include "../generic/dec_tail.c" +#else + BASE64_DEC_STUB +#endif +} diff --git a/src/third-party/base64/lib/arch/neon64/dec_loop.c b/src/third-party/base64/lib/arch/neon64/dec_loop.c new file mode 100644 index 0000000..48232f2 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon64/dec_loop.c @@ -0,0 +1,129 @@ +// The input consists of five valid character sets in the Base64 alphabet, +// which we need to map back to the 6-bit values they represent. +// There are three ranges, two singles, and then there's the rest. +// +// # From To LUT Characters +// 1 [0..42] [255] #1 invalid input +// 2 [43] [62] #1 + +// 3 [44..46] [255] #1 invalid input +// 4 [47] [63] #1 / +// 5 [48..57] [52..61] #1 0..9 +// 6 [58..63] [255] #1 invalid input +// 7 [64] [255] #2 invalid input +// 8 [65..90] [0..25] #2 A..Z +// 9 [91..96] [255] #2 invalid input +// 10 [97..122] [26..51] #2 a..z +// 11 [123..126] [255] #2 invalid input +// (12) Everything else => invalid input + +// The first LUT will use the VTBL instruction (out of range indices are set to +// 0 in destination). +static const uint8_t dec_lut1[] = { + 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, + 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, + 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 255U, 62U, 255U, 255U, 255U, 63U, + 52U, 53U, 54U, 55U, 56U, 57U, 58U, 59U, 60U, 61U, 255U, 255U, 255U, 255U, 255U, 255U, +}; + +// The second LUT will use the VTBX instruction (out of range indices will be +// unchanged in destination). Input [64..126] will be mapped to index [1..63] +// in this LUT. Index 0 means that value comes from LUT #1. +static const uint8_t dec_lut2[] = { + 0U, 255U, 0U, 1U, 2U, 3U, 4U, 5U, 6U, 7U, 8U, 9U, 10U, 11U, 12U, 13U, + 14U, 15U, 16U, 17U, 18U, 19U, 20U, 21U, 22U, 23U, 24U, 25U, 255U, 255U, 255U, 255U, + 255U, 255U, 26U, 27U, 28U, 29U, 30U, 31U, 32U, 33U, 34U, 35U, 36U, 37U, 38U, 39U, + 40U, 41U, 42U, 43U, 44U, 45U, 46U, 47U, 48U, 49U, 50U, 51U, 255U, 255U, 255U, 255U, +}; + +// All input values in range for the first look-up will be 0U in the second +// look-up result. All input values out of range for the first look-up will be +// 0U in the first look-up result. Thus, the two results can be ORed without +// conflicts. +// +// Invalid characters that are in the valid range for either look-up will be +// set to 255U in the combined result. Other invalid characters will just be +// passed through with the second look-up result (using the VTBX instruction). +// Since the second LUT is 64 bytes, those passed-through values are guaranteed +// to have a value greater than 63U. Therefore, valid characters will be mapped +// to the valid [0..63] range and all invalid characters will be mapped to +// values greater than 63. + +static inline void +dec_loop_neon64 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 64) { + return; + } + + // Process blocks of 64 bytes per round. Unlike the SSE codecs, no + // extra trailing zero bytes are written, so it is not necessary to + // reserve extra input bytes: + size_t rounds = *slen / 64; + + *slen -= rounds * 64; // 64 bytes consumed per round + *olen += rounds * 48; // 48 bytes produced per round + + const uint8x16x4_t tbl_dec1 = load_64byte_table(dec_lut1); + const uint8x16x4_t tbl_dec2 = load_64byte_table(dec_lut2); + + do { + const uint8x16_t offset = vdupq_n_u8(63U); + uint8x16x4_t dec1, dec2; + uint8x16x3_t dec; + + // Load 64 bytes and deinterleave: + uint8x16x4_t str = vld4q_u8((uint8_t *) *s); + + // Get indices for second LUT: + dec2.val[0] = vqsubq_u8(str.val[0], offset); + dec2.val[1] = vqsubq_u8(str.val[1], offset); + dec2.val[2] = vqsubq_u8(str.val[2], offset); + dec2.val[3] = vqsubq_u8(str.val[3], offset); + + // Get values from first LUT: + dec1.val[0] = vqtbl4q_u8(tbl_dec1, str.val[0]); + dec1.val[1] = vqtbl4q_u8(tbl_dec1, str.val[1]); + dec1.val[2] = vqtbl4q_u8(tbl_dec1, str.val[2]); + dec1.val[3] = vqtbl4q_u8(tbl_dec1, str.val[3]); + + // Get values from second LUT: + dec2.val[0] = vqtbx4q_u8(dec2.val[0], tbl_dec2, dec2.val[0]); + dec2.val[1] = vqtbx4q_u8(dec2.val[1], tbl_dec2, dec2.val[1]); + dec2.val[2] = vqtbx4q_u8(dec2.val[2], tbl_dec2, dec2.val[2]); + dec2.val[3] = vqtbx4q_u8(dec2.val[3], tbl_dec2, dec2.val[3]); + + // Get final values: + str.val[0] = vorrq_u8(dec1.val[0], dec2.val[0]); + str.val[1] = vorrq_u8(dec1.val[1], dec2.val[1]); + str.val[2] = vorrq_u8(dec1.val[2], dec2.val[2]); + str.val[3] = vorrq_u8(dec1.val[3], dec2.val[3]); + + // Check for invalid input, any value larger than 63: + const uint8x16_t classified + = vcgtq_u8(str.val[0], vdupq_n_u8(63)) + | vcgtq_u8(str.val[1], vdupq_n_u8(63)) + | vcgtq_u8(str.val[2], vdupq_n_u8(63)) + | vcgtq_u8(str.val[3], vdupq_n_u8(63)); + + // Check that all bits are zero: + if (vmaxvq_u8(classified) != 0U) { + break; + } + + // Compress four bytes into three: + dec.val[0] = vshlq_n_u8(str.val[0], 2) | vshrq_n_u8(str.val[1], 4); + dec.val[1] = vshlq_n_u8(str.val[1], 4) | vshrq_n_u8(str.val[2], 2); + dec.val[2] = vshlq_n_u8(str.val[2], 6) | str.val[3]; + + // Interleave and store decoded result: + vst3q_u8((uint8_t *) *o, dec); + + *s += 64; + *o += 48; + + } while (--rounds > 0); + + // Adjust for any rounds that were skipped: + *slen += rounds * 64; + *olen -= rounds * 48; +} diff --git a/src/third-party/base64/lib/arch/neon64/enc_loop.c b/src/third-party/base64/lib/arch/neon64/enc_loop.c new file mode 100644 index 0000000..d1862f7 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon64/enc_loop.c @@ -0,0 +1,133 @@ +#ifdef BASE64_NEON64_USE_ASM +static inline void +enc_loop_neon64_inner_asm (const uint8_t **s, uint8_t **o, const uint8x16x4_t tbl_enc) +{ + // This function duplicates the functionality of enc_loop_neon64_inner, + // but entirely with inline assembly. This gives a significant speedup + // over using NEON intrinsics, which do not always generate very good + // code. The logic of the assembly is directly lifted from the + // intrinsics version, so it can be used as a guide to this code. + + // Temporary registers, used as scratch space. + uint8x16_t tmp0, tmp1, tmp2, tmp3; + + // Numeric constant. + const uint8x16_t n63 = vdupq_n_u8(63); + + __asm__ ( + + // Load 48 bytes and deinterleave. The bytes are loaded to + // hard-coded registers v12, v13 and v14, to ensure that they + // are contiguous. Increment the source pointer. + "ld3 {v12.16b, v13.16b, v14.16b}, [%[src]], #48 \n\t" + + // Reshuffle the bytes using temporaries. + "ushr %[t0].16b, v12.16b, #2 \n\t" + "ushr %[t1].16b, v13.16b, #4 \n\t" + "ushr %[t2].16b, v14.16b, #6 \n\t" + "sli %[t1].16b, v12.16b, #4 \n\t" + "sli %[t2].16b, v13.16b, #2 \n\t" + "and %[t1].16b, %[t1].16b, %[n63].16b \n\t" + "and %[t2].16b, %[t2].16b, %[n63].16b \n\t" + "and %[t3].16b, v14.16b, %[n63].16b \n\t" + + // Translate the values to the Base64 alphabet. + "tbl v12.16b, {%[l0].16b, %[l1].16b, %[l2].16b, %[l3].16b}, %[t0].16b \n\t" + "tbl v13.16b, {%[l0].16b, %[l1].16b, %[l2].16b, %[l3].16b}, %[t1].16b \n\t" + "tbl v14.16b, {%[l0].16b, %[l1].16b, %[l2].16b, %[l3].16b}, %[t2].16b \n\t" + "tbl v15.16b, {%[l0].16b, %[l1].16b, %[l2].16b, %[l3].16b}, %[t3].16b \n\t" + + // Store 64 bytes and interleave. Increment the dest pointer. + "st4 {v12.16b, v13.16b, v14.16b, v15.16b}, [%[dst]], #64 \n\t" + + // Outputs (modified). + : [src] "+r" (*s), + [dst] "+r" (*o), + [t0] "=&w" (tmp0), + [t1] "=&w" (tmp1), + [t2] "=&w" (tmp2), + [t3] "=&w" (tmp3) + + // Inputs (not modified). + : [n63] "w" (n63), + [l0] "w" (tbl_enc.val[0]), + [l1] "w" (tbl_enc.val[1]), + [l2] "w" (tbl_enc.val[2]), + [l3] "w" (tbl_enc.val[3]) + + // Clobbers. + : "v12", "v13", "v14", "v15" + ); +} +#endif + +static inline void +enc_loop_neon64_inner (const uint8_t **s, uint8_t **o, const uint8x16x4_t tbl_enc) +{ +#ifdef BASE64_NEON64_USE_ASM + enc_loop_neon64_inner_asm(s, o, tbl_enc); +#else + // Load 48 bytes and deinterleave: + uint8x16x3_t src = vld3q_u8(*s); + + // Divide bits of three input bytes over four output bytes: + uint8x16x4_t out = enc_reshuffle(src); + + // The bits have now been shifted to the right locations; + // translate their values 0..63 to the Base64 alphabet. + // Use a 64-byte table lookup: + out.val[0] = vqtbl4q_u8(tbl_enc, out.val[0]); + out.val[1] = vqtbl4q_u8(tbl_enc, out.val[1]); + out.val[2] = vqtbl4q_u8(tbl_enc, out.val[2]); + out.val[3] = vqtbl4q_u8(tbl_enc, out.val[3]); + + // Interleave and store output: + vst4q_u8(*o, out); + + *s += 48; + *o += 64; +#endif +} + +static inline void +enc_loop_neon64 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + size_t rounds = *slen / 48; + + *slen -= rounds * 48; // 48 bytes consumed per round + *olen += rounds * 64; // 64 bytes produced per round + + // Load the encoding table: + const uint8x16x4_t tbl_enc = load_64byte_table(base64_table_enc_6bit); + + while (rounds > 0) { + if (rounds >= 8) { + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + rounds -= 8; + continue; + } + if (rounds >= 4) { + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + rounds -= 4; + continue; + } + if (rounds >= 2) { + enc_loop_neon64_inner(s, o, tbl_enc); + enc_loop_neon64_inner(s, o, tbl_enc); + rounds -= 2; + continue; + } + enc_loop_neon64_inner(s, o, tbl_enc); + break; + } +} diff --git a/src/third-party/base64/lib/arch/neon64/enc_reshuffle.c b/src/third-party/base64/lib/arch/neon64/enc_reshuffle.c new file mode 100644 index 0000000..ea543e0 --- /dev/null +++ b/src/third-party/base64/lib/arch/neon64/enc_reshuffle.c @@ -0,0 +1,31 @@ +static inline uint8x16x4_t +enc_reshuffle (const uint8x16x3_t in) +{ + uint8x16x4_t out; + + // Input: + // in[0] = a7 a6 a5 a4 a3 a2 a1 a0 + // in[1] = b7 b6 b5 b4 b3 b2 b1 b0 + // in[2] = c7 c6 c5 c4 c3 c2 c1 c0 + + // Output: + // out[0] = 00 00 a7 a6 a5 a4 a3 a2 + // out[1] = 00 00 a1 a0 b7 b6 b5 b4 + // out[2] = 00 00 b3 b2 b1 b0 c7 c6 + // out[3] = 00 00 c5 c4 c3 c2 c1 c0 + + // Move the input bits to where they need to be in the outputs. Except + // for the first output, the high two bits are not cleared. + out.val[0] = vshrq_n_u8(in.val[0], 2); + out.val[1] = vshrq_n_u8(in.val[1], 4); + out.val[2] = vshrq_n_u8(in.val[2], 6); + out.val[1] = vsliq_n_u8(out.val[1], in.val[0], 4); + out.val[2] = vsliq_n_u8(out.val[2], in.val[1], 2); + + // Clear the high two bits in the second, third and fourth output. + out.val[1] = vandq_u8(out.val[1], vdupq_n_u8(0x3F)); + out.val[2] = vandq_u8(out.val[2], vdupq_n_u8(0x3F)); + out.val[3] = vandq_u8(in.val[2], vdupq_n_u8(0x3F)); + + return out; +} diff --git a/src/third-party/base64/lib/arch/sse41/codec.c b/src/third-party/base64/lib/arch/sse41/codec.c new file mode 100644 index 0000000..00645fe --- /dev/null +++ b/src/third-party/base64/lib/arch/sse41/codec.c @@ -0,0 +1,42 @@ +#include <stdint.h> +#include <stddef.h> +#include <stdlib.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#if HAVE_SSE41 +#include <smmintrin.h> + +#include "../ssse3/dec_reshuffle.c" +#include "../ssse3/dec_loop.c" +#include "../ssse3/enc_translate.c" +#include "../ssse3/enc_reshuffle.c" +#include "../ssse3/enc_loop.c" + +#endif // HAVE_SSE41 + +BASE64_ENC_FUNCTION(sse41) +{ +#if HAVE_SSE41 + #include "../generic/enc_head.c" + enc_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/enc_tail.c" +#else + BASE64_ENC_STUB +#endif +} + +BASE64_DEC_FUNCTION(sse41) +{ +#if HAVE_SSE41 + #include "../generic/dec_head.c" + dec_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/dec_tail.c" +#else + BASE64_DEC_STUB +#endif +} diff --git a/src/third-party/base64/lib/arch/sse42/codec.c b/src/third-party/base64/lib/arch/sse42/codec.c new file mode 100644 index 0000000..cf5d97c --- /dev/null +++ b/src/third-party/base64/lib/arch/sse42/codec.c @@ -0,0 +1,42 @@ +#include <stdint.h> +#include <stddef.h> +#include <stdlib.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#if HAVE_SSE42 +#include <nmmintrin.h> + +#include "../ssse3/dec_reshuffle.c" +#include "../ssse3/dec_loop.c" +#include "../ssse3/enc_translate.c" +#include "../ssse3/enc_reshuffle.c" +#include "../ssse3/enc_loop.c" + +#endif // HAVE_SSE42 + +BASE64_ENC_FUNCTION(sse42) +{ +#if HAVE_SSE42 + #include "../generic/enc_head.c" + enc_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/enc_tail.c" +#else + BASE64_ENC_STUB +#endif +} + +BASE64_DEC_FUNCTION(sse42) +{ +#if HAVE_SSE42 + #include "../generic/dec_head.c" + dec_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/dec_tail.c" +#else + BASE64_DEC_STUB +#endif +} diff --git a/src/third-party/base64/lib/arch/ssse3/codec.c b/src/third-party/base64/lib/arch/ssse3/codec.c new file mode 100644 index 0000000..ad14a45 --- /dev/null +++ b/src/third-party/base64/lib/arch/ssse3/codec.c @@ -0,0 +1,42 @@ +#include <stdint.h> +#include <stddef.h> +#include <stdlib.h> + +#include "../../../include/libbase64.h" +#include "../../tables/tables.h" +#include "../../codecs.h" +#include "config.h" +#include "../../env.h" + +#if HAVE_SSSE3 +#include <tmmintrin.h> + +#include "dec_reshuffle.c" +#include "dec_loop.c" +#include "enc_reshuffle.c" +#include "enc_translate.c" +#include "enc_loop.c" + +#endif // HAVE_SSSE3 + +BASE64_ENC_FUNCTION(ssse3) +{ +#if HAVE_SSSE3 + #include "../generic/enc_head.c" + enc_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/enc_tail.c" +#else + BASE64_ENC_STUB +#endif +} + +BASE64_DEC_FUNCTION(ssse3) +{ +#if HAVE_SSSE3 + #include "../generic/dec_head.c" + dec_loop_ssse3(&s, &slen, &o, &olen); + #include "../generic/dec_tail.c" +#else + BASE64_DEC_STUB +#endif +} diff --git a/src/third-party/base64/lib/arch/ssse3/dec_loop.c b/src/third-party/base64/lib/arch/ssse3/dec_loop.c new file mode 100644 index 0000000..9da71ab --- /dev/null +++ b/src/third-party/base64/lib/arch/ssse3/dec_loop.c @@ -0,0 +1,173 @@ +// The input consists of six character sets in the Base64 alphabet, which we +// need to map back to the 6-bit values they represent. There are three ranges, +// two singles, and then there's the rest. +// +// # From To Add Characters +// 1 [43] [62] +19 + +// 2 [47] [63] +16 / +// 3 [48..57] [52..61] +4 0..9 +// 4 [65..90] [0..25] -65 A..Z +// 5 [97..122] [26..51] -71 a..z +// (6) Everything else => invalid input +// +// We will use lookup tables for character validation and offset computation. +// Remember that 0x2X and 0x0X are the same index for _mm_shuffle_epi8, this +// allows to mask with 0x2F instead of 0x0F and thus save one constant +// declaration (register and/or memory access). +// +// For offsets: +// Perfect hash for lut = ((src >> 4) & 0x2F) + ((src == 0x2F) ? 0xFF : 0x00) +// 0000 = garbage +// 0001 = / +// 0010 = + +// 0011 = 0-9 +// 0100 = A-Z +// 0101 = A-Z +// 0110 = a-z +// 0111 = a-z +// 1000 >= garbage +// +// For validation, here's the table. +// A character is valid if and only if the AND of the 2 lookups equals 0: +// +// hi \ lo 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 +// LUT 0x15 0x11 0x11 0x11 0x11 0x11 0x11 0x11 0x11 0x11 0x13 0x1A 0x1B 0x1B 0x1B 0x1A +// +// 0000 0x10 char NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI +// andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// +// 0001 0x10 char DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US +// andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// +// 0010 0x01 char ! " # $ % & ' ( ) * + , - . / +// andlut 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x00 0x01 0x01 0x01 0x00 +// +// 0011 0x02 char 0 1 2 3 4 5 6 7 8 9 : ; < = > ? +// andlut 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x02 0x02 0x02 0x02 0x02 0x02 +// +// 0100 0x04 char @ A B C D E F G H I J K L M N O +// andlut 0x04 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 +// +// 0101 0x08 char P Q R S T U V W X Y Z [ \ ] ^ _ +// andlut 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x08 0x08 0x08 0x08 +// +// 0110 0x04 char ` a b c d e f g h i j k l m n o +// andlut 0x04 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 +// 0111 0x08 char p q r s t u v w x y z { | } ~ +// andlut 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x08 0x08 0x08 0x08 +// +// 1000 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// 1001 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// 1010 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// 1011 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// 1100 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// 1101 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// 1110 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 +// 1111 0x10 andlut 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 0x10 + +static inline int +dec_loop_ssse3_inner (const uint8_t **s, uint8_t **o, size_t *rounds) +{ + const __m128i lut_lo = _mm_setr_epi8( + 0x15, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, + 0x11, 0x11, 0x13, 0x1A, 0x1B, 0x1B, 0x1B, 0x1A); + + const __m128i lut_hi = _mm_setr_epi8( + 0x10, 0x10, 0x01, 0x02, 0x04, 0x08, 0x04, 0x08, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10); + + const __m128i lut_roll = _mm_setr_epi8( + 0, 16, 19, 4, -65, -65, -71, -71, + 0, 0, 0, 0, 0, 0, 0, 0); + + const __m128i mask_2F = _mm_set1_epi8(0x2F); + + // Load input: + __m128i str = _mm_loadu_si128((__m128i *) *s); + + // Table lookups: + const __m128i hi_nibbles = _mm_and_si128(_mm_srli_epi32(str, 4), mask_2F); + const __m128i lo_nibbles = _mm_and_si128(str, mask_2F); + const __m128i hi = _mm_shuffle_epi8(lut_hi, hi_nibbles); + const __m128i lo = _mm_shuffle_epi8(lut_lo, lo_nibbles); + + // Check for invalid input: if any "and" values from lo and hi are not + // zero, fall back on bytewise code to do error checking and reporting: + if (_mm_movemask_epi8(_mm_cmpgt_epi8(_mm_and_si128(lo, hi), _mm_setzero_si128())) != 0) { + return 0; + } + + const __m128i eq_2F = _mm_cmpeq_epi8(str, mask_2F); + const __m128i roll = _mm_shuffle_epi8(lut_roll, _mm_add_epi8(eq_2F, hi_nibbles)); + + // Now simply add the delta values to the input: + str = _mm_add_epi8(str, roll); + + // Reshuffle the input to packed 12-byte output format: + str = dec_reshuffle(str); + + // Store the output: + _mm_storeu_si128((__m128i *) *o, str); + + *s += 16; + *o += 12; + *rounds -= 1; + + return 1; +} + +static inline void +dec_loop_ssse3 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 24) { + return; + } + + // Process blocks of 16 bytes per round. Because 4 extra zero bytes are + // written after the output, ensure that there will be at least 8 bytes + // of input data left to cover the gap. (6 data bytes and up to two + // end-of-string markers.) + size_t rounds = (*slen - 8) / 16; + + *slen -= rounds * 16; // 16 bytes consumed per round + *olen += rounds * 12; // 12 bytes produced per round + + do { + if (rounds >= 8) { + if (dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds)) { + continue; + } + break; + } + if (rounds >= 4) { + if (dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds)) { + continue; + } + break; + } + if (rounds >= 2) { + if (dec_loop_ssse3_inner(s, o, &rounds) && + dec_loop_ssse3_inner(s, o, &rounds)) { + continue; + } + break; + } + dec_loop_ssse3_inner(s, o, &rounds); + break; + + } while (rounds > 0); + + // Adjust for any rounds that were skipped: + *slen += rounds * 16; + *olen -= rounds * 12; +} diff --git a/src/third-party/base64/lib/arch/ssse3/dec_reshuffle.c b/src/third-party/base64/lib/arch/ssse3/dec_reshuffle.c new file mode 100644 index 0000000..fdf587f --- /dev/null +++ b/src/third-party/base64/lib/arch/ssse3/dec_reshuffle.c @@ -0,0 +1,33 @@ +static inline __m128i +dec_reshuffle (const __m128i in) +{ + // in, bits, upper case are most significant bits, lower case are least significant bits + // 00llllll 00kkkkLL 00jjKKKK 00JJJJJJ + // 00iiiiii 00hhhhII 00ggHHHH 00GGGGGG + // 00ffffff 00eeeeFF 00ddEEEE 00DDDDDD + // 00cccccc 00bbbbCC 00aaBBBB 00AAAAAA + + const __m128i merge_ab_and_bc = _mm_maddubs_epi16(in, _mm_set1_epi32(0x01400140)); + // 0000kkkk LLllllll 0000JJJJ JJjjKKKK + // 0000hhhh IIiiiiii 0000GGGG GGggHHHH + // 0000eeee FFffffff 0000DDDD DDddEEEE + // 0000bbbb CCcccccc 0000AAAA AAaaBBBB + + const __m128i out = _mm_madd_epi16(merge_ab_and_bc, _mm_set1_epi32(0x00011000)); + // 00000000 JJJJJJjj KKKKkkkk LLllllll + // 00000000 GGGGGGgg HHHHhhhh IIiiiiii + // 00000000 DDDDDDdd EEEEeeee FFffffff + // 00000000 AAAAAAaa BBBBbbbb CCcccccc + + // Pack bytes together: + return _mm_shuffle_epi8(out, _mm_setr_epi8( + 2, 1, 0, + 6, 5, 4, + 10, 9, 8, + 14, 13, 12, + -1, -1, -1, -1)); + // 00000000 00000000 00000000 00000000 + // LLllllll KKKKkkkk JJJJJJjj IIiiiiii + // HHHHhhhh GGGGGGgg FFffffff EEEEeeee + // DDDDDDdd CCcccccc BBBBbbbb AAAAAAaa +} diff --git a/src/third-party/base64/lib/arch/ssse3/enc_loop.c b/src/third-party/base64/lib/arch/ssse3/enc_loop.c new file mode 100644 index 0000000..6de652e --- /dev/null +++ b/src/third-party/base64/lib/arch/ssse3/enc_loop.c @@ -0,0 +1,67 @@ +static inline void +enc_loop_ssse3_inner (const uint8_t **s, uint8_t **o) +{ + // Load input: + __m128i str = _mm_loadu_si128((__m128i *) *s); + + // Reshuffle: + str = enc_reshuffle(str); + + // Translate reshuffled bytes to the Base64 alphabet: + str = enc_translate(str); + + // Store: + _mm_storeu_si128((__m128i *) *o, str); + + *s += 12; + *o += 16; +} + +static inline void +enc_loop_ssse3 (const uint8_t **s, size_t *slen, uint8_t **o, size_t *olen) +{ + if (*slen < 16) { + return; + } + + // Process blocks of 12 bytes at a time. Because blocks are loaded 16 + // bytes at a time, ensure that there will be at least 4 remaining + // bytes after the last round, so that the final read will not pass + // beyond the bounds of the input buffer: + size_t rounds = (*slen - 4) / 12; + + *slen -= rounds * 12; // 12 bytes consumed per round + *olen += rounds * 16; // 16 bytes produced per round + + do { + if (rounds >= 8) { + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + rounds -= 8; + continue; + } + if (rounds >= 4) { + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + rounds -= 4; + continue; + } + if (rounds >= 2) { + enc_loop_ssse3_inner(s, o); + enc_loop_ssse3_inner(s, o); + rounds -= 2; + continue; + } + enc_loop_ssse3_inner(s, o); + break; + + } while (rounds > 0); +} diff --git a/src/third-party/base64/lib/arch/ssse3/enc_reshuffle.c b/src/third-party/base64/lib/arch/ssse3/enc_reshuffle.c new file mode 100644 index 0000000..b738591 --- /dev/null +++ b/src/third-party/base64/lib/arch/ssse3/enc_reshuffle.c @@ -0,0 +1,48 @@ +static inline __m128i +enc_reshuffle (__m128i in) +{ + // Input, bytes MSB to LSB: + // 0 0 0 0 l k j i h g f e d c b a + + in = _mm_shuffle_epi8(in, _mm_set_epi8( + 10, 11, 9, 10, + 7, 8, 6, 7, + 4, 5, 3, 4, + 1, 2, 0, 1)); + // in, bytes MSB to LSB: + // k l j k + // h i g h + // e f d e + // b c a b + + const __m128i t0 = _mm_and_si128(in, _mm_set1_epi32(0x0FC0FC00)); + // bits, upper case are most significant bits, lower case are least significant bits + // 0000kkkk LL000000 JJJJJJ00 00000000 + // 0000hhhh II000000 GGGGGG00 00000000 + // 0000eeee FF000000 DDDDDD00 00000000 + // 0000bbbb CC000000 AAAAAA00 00000000 + + const __m128i t1 = _mm_mulhi_epu16(t0, _mm_set1_epi32(0x04000040)); + // 00000000 00kkkkLL 00000000 00JJJJJJ + // 00000000 00hhhhII 00000000 00GGGGGG + // 00000000 00eeeeFF 00000000 00DDDDDD + // 00000000 00bbbbCC 00000000 00AAAAAA + + const __m128i t2 = _mm_and_si128(in, _mm_set1_epi32(0x003F03F0)); + // 00000000 00llllll 000000jj KKKK0000 + // 00000000 00iiiiii 000000gg HHHH0000 + // 00000000 00ffffff 000000dd EEEE0000 + // 00000000 00cccccc 000000aa BBBB0000 + + const __m128i t3 = _mm_mullo_epi16(t2, _mm_set1_epi32(0x01000010)); + // 00llllll 00000000 00jjKKKK 00000000 + // 00iiiiii 00000000 00ggHHHH 00000000 + // 00ffffff 00000000 00ddEEEE 00000000 + // 00cccccc 00000000 00aaBBBB 00000000 + + return _mm_or_si128(t1, t3); + // 00llllll 00kkkkLL 00jjKKKK 00JJJJJJ + // 00iiiiii 00hhhhII 00ggHHHH 00GGGGGG + // 00ffffff 00eeeeFF 00ddEEEE 00DDDDDD + // 00cccccc 00bbbbCC 00aaBBBB 00AAAAAA +} diff --git a/src/third-party/base64/lib/arch/ssse3/enc_translate.c b/src/third-party/base64/lib/arch/ssse3/enc_translate.c new file mode 100644 index 0000000..04f288f --- /dev/null +++ b/src/third-party/base64/lib/arch/ssse3/enc_translate.c @@ -0,0 +1,33 @@ +static inline __m128i +enc_translate (const __m128i in) +{ + // A lookup table containing the absolute offsets for all ranges: + const __m128i lut = _mm_setr_epi8( + 65, 71, -4, -4, + -4, -4, -4, -4, + -4, -4, -4, -4, + -19, -16, 0, 0 + ); + + // Translate values 0..63 to the Base64 alphabet. There are five sets: + // # From To Abs Index Characters + // 0 [0..25] [65..90] +65 0 ABCDEFGHIJKLMNOPQRSTUVWXYZ + // 1 [26..51] [97..122] +71 1 abcdefghijklmnopqrstuvwxyz + // 2 [52..61] [48..57] -4 [2..11] 0123456789 + // 3 [62] [43] -19 12 + + // 4 [63] [47] -16 13 / + + // Create LUT indices from the input. The index for range #0 is right, + // others are 1 less than expected: + __m128i indices = _mm_subs_epu8(in, _mm_set1_epi8(51)); + + // mask is 0xFF (-1) for range #[1..4] and 0x00 for range #0: + __m128i mask = _mm_cmpgt_epi8(in, _mm_set1_epi8(25)); + + // Subtract -1, so add 1 to indices for range #[1..4]. All indices are + // now correct: + indices = _mm_sub_epi8(indices, mask); + + // Add offsets to input values: + return _mm_add_epi8(in, _mm_shuffle_epi8(lut, indices)); +} diff --git a/src/third-party/base64/lib/codec_choose.c b/src/third-party/base64/lib/codec_choose.c new file mode 100644 index 0000000..6a07d6a --- /dev/null +++ b/src/third-party/base64/lib/codec_choose.c @@ -0,0 +1,281 @@ +#include <stdbool.h> +#include <stdint.h> +#include <stddef.h> +#include <stdint.h> + +#include "../include/libbase64.h" +#include "codecs.h" +#include "config.h" +#include "env.h" + +#if (__x86_64__ || __i386__ || _M_X86 || _M_X64) + #define BASE64_X86 + #if (HAVE_SSSE3 || HAVE_SSE41 || HAVE_SSE42 || HAVE_AVX || HAVE_AVX2) + #define BASE64_X86_SIMD + #endif +#endif + +#ifdef BASE64_X86 +#ifdef _MSC_VER + #include <intrin.h> + #define __cpuid_count(__level, __count, __eax, __ebx, __ecx, __edx) \ + { \ + int info[4]; \ + __cpuidex(info, __level, __count); \ + __eax = info[0]; \ + __ebx = info[1]; \ + __ecx = info[2]; \ + __edx = info[3]; \ + } + #define __cpuid(__level, __eax, __ebx, __ecx, __edx) \ + __cpuid_count(__level, 0, __eax, __ebx, __ecx, __edx) +#else + #include <cpuid.h> + #if HAVE_AVX2 || HAVE_AVX + #if ((__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 2) || (__clang_major__ >= 3)) + static inline uint64_t _xgetbv (uint32_t index) + { + uint32_t eax, edx; + __asm__ __volatile__("xgetbv" : "=a"(eax), "=d"(edx) : "c"(index)); + return ((uint64_t)edx << 32) | eax; + } + #else + #error "Platform not supported" + #endif + #endif +#endif + +#ifndef bit_AVX2 +#define bit_AVX2 (1 << 5) +#endif +#ifndef bit_SSSE3 +#define bit_SSSE3 (1 << 9) +#endif +#ifndef bit_SSE41 +#define bit_SSE41 (1 << 19) +#endif +#ifndef bit_SSE42 +#define bit_SSE42 (1 << 20) +#endif +#ifndef bit_AVX +#define bit_AVX (1 << 28) +#endif + +#define bit_XSAVE_XRSTORE (1 << 27) + +#ifndef _XCR_XFEATURE_ENABLED_MASK +#define _XCR_XFEATURE_ENABLED_MASK 0 +#endif + +#define _XCR_XMM_AND_YMM_STATE_ENABLED_BY_OS 0x6 +#endif + +// Function declarations: +#define BASE64_CODEC_FUNCS(arch) \ + BASE64_ENC_FUNCTION(arch); \ + BASE64_DEC_FUNCTION(arch); \ + +BASE64_CODEC_FUNCS(avx2) +BASE64_CODEC_FUNCS(neon32) +BASE64_CODEC_FUNCS(neon64) +BASE64_CODEC_FUNCS(plain) +BASE64_CODEC_FUNCS(ssse3) +BASE64_CODEC_FUNCS(sse41) +BASE64_CODEC_FUNCS(sse42) +BASE64_CODEC_FUNCS(avx) + +static bool +codec_choose_forced (struct codec *codec, int flags) +{ + // If the user wants to use a certain codec, + // always allow it, even if the codec is a no-op. + // For testing purposes. + + if (!(flags & 0xFF)) { + return false; + } + if (flags & BASE64_FORCE_AVX2) { + codec->enc = base64_stream_encode_avx2; + codec->dec = base64_stream_decode_avx2; + return true; + } + if (flags & BASE64_FORCE_NEON32) { + codec->enc = base64_stream_encode_neon32; + codec->dec = base64_stream_decode_neon32; + return true; + } + if (flags & BASE64_FORCE_NEON64) { + codec->enc = base64_stream_encode_neon64; + codec->dec = base64_stream_decode_neon64; + return true; + } + if (flags & BASE64_FORCE_PLAIN) { + codec->enc = base64_stream_encode_plain; + codec->dec = base64_stream_decode_plain; + return true; + } + if (flags & BASE64_FORCE_SSSE3) { + codec->enc = base64_stream_encode_ssse3; + codec->dec = base64_stream_decode_ssse3; + return true; + } + if (flags & BASE64_FORCE_SSE41) { + codec->enc = base64_stream_encode_sse41; + codec->dec = base64_stream_decode_sse41; + return true; + } + if (flags & BASE64_FORCE_SSE42) { + codec->enc = base64_stream_encode_sse42; + codec->dec = base64_stream_decode_sse42; + return true; + } + if (flags & BASE64_FORCE_AVX) { + codec->enc = base64_stream_encode_avx; + codec->dec = base64_stream_decode_avx; + return true; + } + return false; +} + +static bool +codec_choose_arm (struct codec *codec) +{ +#if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && ((defined(__aarch64__) && HAVE_NEON64) || HAVE_NEON32) + + // Unfortunately there is no portable way to check for NEON + // support at runtime from userland in the same way that x86 + // has cpuid, so just stick to the compile-time configuration: + + #if defined(__aarch64__) && HAVE_NEON64 + codec->enc = base64_stream_encode_neon64; + codec->dec = base64_stream_decode_neon64; + #else + codec->enc = base64_stream_encode_neon32; + codec->dec = base64_stream_decode_neon32; + #endif + + return true; + +#else + (void)codec; + return false; +#endif +} + +static bool +codec_choose_x86 (struct codec *codec) +{ +#ifdef BASE64_X86_SIMD + + unsigned int eax, ebx = 0, ecx = 0, edx; + unsigned int max_level; + + #ifdef _MSC_VER + int info[4]; + __cpuidex(info, 0, 0); + max_level = info[0]; + #else + max_level = __get_cpuid_max(0, NULL); + #endif + + #if HAVE_AVX2 || HAVE_AVX + // Check for AVX/AVX2 support: + // Checking for AVX requires 3 things: + // 1) CPUID indicates that the OS uses XSAVE and XRSTORE instructions + // (allowing saving YMM registers on context switch) + // 2) CPUID indicates support for AVX + // 3) XGETBV indicates the AVX registers will be saved and restored on + // context switch + // + // Note that XGETBV is only available on 686 or later CPUs, so the + // instruction needs to be conditionally run. + if (max_level >= 1) { + __cpuid_count(1, 0, eax, ebx, ecx, edx); + if (ecx & bit_XSAVE_XRSTORE) { + uint64_t xcr_mask; + xcr_mask = _xgetbv(_XCR_XFEATURE_ENABLED_MASK); + if (xcr_mask & _XCR_XMM_AND_YMM_STATE_ENABLED_BY_OS) { + #if HAVE_AVX2 + if (max_level >= 7) { + __cpuid_count(7, 0, eax, ebx, ecx, edx); + if (ebx & bit_AVX2) { + codec->enc = base64_stream_encode_avx2; + codec->dec = base64_stream_decode_avx2; + return true; + } + } + #endif + #if HAVE_AVX + __cpuid_count(1, 0, eax, ebx, ecx, edx); + if (ecx & bit_AVX) { + codec->enc = base64_stream_encode_avx; + codec->dec = base64_stream_decode_avx; + return true; + } + #endif + } + } + } + #endif + + #if HAVE_SSE42 + // Check for SSE42 support: + if (max_level >= 1) { + __cpuid(1, eax, ebx, ecx, edx); + if (ecx & bit_SSE42) { + codec->enc = base64_stream_encode_sse42; + codec->dec = base64_stream_decode_sse42; + return true; + } + } + #endif + + #if HAVE_SSE41 + // Check for SSE41 support: + if (max_level >= 1) { + __cpuid(1, eax, ebx, ecx, edx); + if (ecx & bit_SSE41) { + codec->enc = base64_stream_encode_sse41; + codec->dec = base64_stream_decode_sse41; + return true; + } + } + #endif + + #if HAVE_SSSE3 + // Check for SSSE3 support: + if (max_level >= 1) { + __cpuid(1, eax, ebx, ecx, edx); + if (ecx & bit_SSSE3) { + codec->enc = base64_stream_encode_ssse3; + codec->dec = base64_stream_decode_ssse3; + return true; + } + } + #endif + +#else + (void)codec; +#endif + + return false; +} + +void +codec_choose (struct codec *codec, int flags) +{ + // User forced a codec: + if (codec_choose_forced(codec, flags)) { + return; + } + + // Runtime feature detection: + if (codec_choose_arm(codec)) { + return; + } + if (codec_choose_x86(codec)) { + return; + } + codec->enc = base64_stream_encode_plain; + codec->dec = base64_stream_decode_plain; +} diff --git a/src/third-party/base64/lib/codecs.h b/src/third-party/base64/lib/codecs.h new file mode 100644 index 0000000..441fd60 --- /dev/null +++ b/src/third-party/base64/lib/codecs.h @@ -0,0 +1,65 @@ +#include <stdint.h> +#include <stddef.h> + +#include "../include/libbase64.h" +#include "config.h" + +// Function parameters for encoding functions: +#define BASE64_ENC_PARAMS \ + ( struct base64_state *state \ + , const char *src \ + , size_t srclen \ + , char *out \ + , size_t *outlen \ + ) + +// Function parameters for decoding functions: +#define BASE64_DEC_PARAMS \ + ( struct base64_state *state \ + , const char *src \ + , size_t srclen \ + , char *out \ + , size_t *outlen \ + ) + +// Function signature for encoding functions: +#define BASE64_ENC_FUNCTION(arch) \ + void \ + base64_stream_encode_ ## arch \ + BASE64_ENC_PARAMS + +// Function signature for decoding functions: +#define BASE64_DEC_FUNCTION(arch) \ + int \ + base64_stream_decode_ ## arch \ + BASE64_DEC_PARAMS + +// Cast away unused variable, silence compiler: +#define UNUSED(x) ((void)(x)) + +// Stub function when encoder arch unsupported: +#define BASE64_ENC_STUB \ + UNUSED(state); \ + UNUSED(src); \ + UNUSED(srclen); \ + UNUSED(out); \ + \ + *outlen = 0; + +// Stub function when decoder arch unsupported: +#define BASE64_DEC_STUB \ + UNUSED(state); \ + UNUSED(src); \ + UNUSED(srclen); \ + UNUSED(out); \ + UNUSED(outlen); \ + \ + return -1; + +struct codec +{ + void (* enc) BASE64_ENC_PARAMS; + int (* dec) BASE64_DEC_PARAMS; +}; + +extern void codec_choose (struct codec *, int flags); diff --git a/src/third-party/base64/lib/config.h b/src/third-party/base64/lib/config.h new file mode 100644 index 0000000..0de5358 --- /dev/null +++ b/src/third-party/base64/lib/config.h @@ -0,0 +1,7 @@ +#define HAVE_AVX2 0 +#define HAVE_NEON32 0 +#define HAVE_NEON64 0 +#define HAVE_SSSE3 0 +#define HAVE_SSE41 0 +#define HAVE_SSE42 0 +#define HAVE_AVX 0 diff --git a/src/third-party/base64/lib/env.h b/src/third-party/base64/lib/env.h new file mode 100644 index 0000000..d5c2fdb --- /dev/null +++ b/src/third-party/base64/lib/env.h @@ -0,0 +1,74 @@ +#ifndef BASE64_ENV_H +#define BASE64_ENV_H + +// This header file contains macro definitions that describe certain aspects of +// the compile-time environment. Compatibility and portability macros go here. + +// Define machine endianness. This is for GCC: +#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) +# define BASE64_LITTLE_ENDIAN 1 +#else +# define BASE64_LITTLE_ENDIAN 0 +#endif + +// This is for Clang: +#ifdef __LITTLE_ENDIAN__ +# define BASE64_LITTLE_ENDIAN 1 +#endif + +#ifdef __BIG_ENDIAN__ +# define BASE64_LITTLE_ENDIAN 0 +#endif + +// MSVC++ needs intrin.h for _byteswap_uint64 (issue #68): +#if BASE64_LITTLE_ENDIAN && defined(_MSC_VER) +# include <intrin.h> +#endif + +// Endian conversion functions: +#if BASE64_LITTLE_ENDIAN +# ifdef _MSC_VER +// Microsoft Visual C++: +# define BASE64_HTOBE32(x) _byteswap_ulong(x) +# define BASE64_HTOBE64(x) _byteswap_uint64(x) +# else +// GCC and Clang: +# define BASE64_HTOBE32(x) __builtin_bswap32(x) +# define BASE64_HTOBE64(x) __builtin_bswap64(x) +# endif +#else +// No conversion needed: +# define BASE64_HTOBE32(x) (x) +# define BASE64_HTOBE64(x) (x) +#endif + +// Detect word size: +#if defined (__x86_64__) +// This also works for the x32 ABI, which has a 64-bit word size. +# define BASE64_WORDSIZE 64 +#elif defined (_INTEGRAL_MAX_BITS) +# define BASE64_WORDSIZE _INTEGRAL_MAX_BITS +#elif defined (__WORDSIZE) +# define BASE64_WORDSIZE __WORDSIZE +#elif defined (__SIZE_WIDTH__) +# define BASE64_WORDSIZE __SIZE_WIDTH__ +#else +# error BASE64_WORDSIZE_NOT_DEFINED +#endif + +// End-of-file definitions. +// Almost end-of-file when waiting for the last '=' character: +#define BASE64_AEOF 1 +// End-of-file when stream end has been reached or invalid input provided: +#define BASE64_EOF 2 + +// GCC 7 defaults to issuing a warning for fallthrough in switch statements, +// unless the fallthrough cases are marked with an attribute. As we use +// fallthrough deliberately, define an alias for the attribute: +#if __GNUC__ >= 7 +# define BASE64_FALLTHROUGH __attribute__((fallthrough)); +#else +# define BASE64_FALLTHROUGH +#endif + +#endif // BASE64_ENV_H diff --git a/src/third-party/base64/lib/lib.c b/src/third-party/base64/lib/lib.c new file mode 100644 index 0000000..659b986 --- /dev/null +++ b/src/third-party/base64/lib/lib.c @@ -0,0 +1,175 @@ +#include <stdint.h> +#include <stddef.h> +#ifdef _OPENMP +#include <omp.h> +#endif + +#include "../include/libbase64.h" +#include "tables/tables.h" +#include "codecs.h" +#include "env.h" + +// These static function pointers are initialized once when the library is +// first used, and remain in use for the remaining lifetime of the program. +// The idea being that CPU features don't change at runtime. +static struct codec codec = { NULL, NULL }; + +// Function declarations: +#define BASE64_CODEC_FUNCS(arch) \ + BASE64_ENC_FUNCTION(arch); \ + BASE64_DEC_FUNCTION(arch); \ + +BASE64_CODEC_FUNCS(plain) + +void +base64_stream_encode_init (struct base64_state *state, int flags) +{ + // If any of the codec flags are set, redo choice: + if (codec.enc == NULL || flags & 0xFF) { + // codec_choose(&codec, flags); + codec.enc = base64_stream_encode_plain; + codec.dec = base64_stream_decode_plain; + } + state->eof = 0; + state->bytes = 0; + state->carry = 0; + state->flags = flags; +} + +void +base64_stream_encode + ( struct base64_state *state + , const char *src + , size_t srclen + , char *out + , size_t *outlen + ) +{ + codec.enc(state, src, srclen, out, outlen); +} + +void +base64_stream_encode_final + ( struct base64_state *state + , char *out + , size_t *outlen + ) +{ + uint8_t *o = (uint8_t *)out; + + if (state->bytes == 1) { + *o++ = base64_table_enc_6bit[state->carry]; + *o++ = '='; + *o++ = '='; + *outlen = 3; + return; + } + if (state->bytes == 2) { + *o++ = base64_table_enc_6bit[state->carry]; + *o++ = '='; + *outlen = 2; + return; + } + *outlen = 0; +} + +void +base64_stream_decode_init (struct base64_state *state, int flags) +{ + // If any of the codec flags are set, redo choice: + if (codec.dec == NULL || flags & 0xFF) { + // codec_choose(&codec, flags); + codec.enc = base64_stream_encode_plain; + codec.dec = base64_stream_decode_plain; + } + state->eof = 0; + state->bytes = 0; + state->carry = 0; + state->flags = flags; +} + +int +base64_stream_decode + ( struct base64_state *state + , const char *src + , size_t srclen + , char *out + , size_t *outlen + ) +{ + return codec.dec(state, src, srclen, out, outlen); +} + +#ifdef _OPENMP + + // Due to the overhead of initializing OpenMP and creating a team of + // threads, we require the data length to be larger than a threshold: + #define OMP_THRESHOLD 20000 + + // Conditionally include OpenMP-accelerated codec implementations: + #include "lib_openmp.c" +#endif + +void +base64_encode + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + , int flags + ) +{ + size_t s; + size_t t; + struct base64_state state; + + #ifdef _OPENMP + if (srclen >= OMP_THRESHOLD) { + base64_encode_openmp(src, srclen, out, outlen, flags); + return; + } + #endif + + // Init the stream reader: + base64_stream_encode_init(&state, flags); + + // Feed the whole string to the stream reader: + base64_stream_encode(&state, src, srclen, out, &s); + + // Finalize the stream by writing trailer if any: + base64_stream_encode_final(&state, out + s, &t); + + // Final output length is stream length plus tail: + *outlen = s + t; +} + +int +base64_decode + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + , int flags + ) +{ + int ret; + struct base64_state state; + + #ifdef _OPENMP + if (srclen >= OMP_THRESHOLD) { + return base64_decode_openmp(src, srclen, out, outlen, flags); + } + #endif + + // Init the stream reader: + base64_stream_decode_init(&state, flags); + + // Feed the whole string to the stream reader: + ret = base64_stream_decode(&state, src, srclen, out, outlen); + + // If when decoding a whole block, we're still waiting for input then fail: + if (ret && (state.bytes == 0)) { + return ret; + } + return 0; +} diff --git a/src/third-party/base64/lib/lib_openmp.c b/src/third-party/base64/lib/lib_openmp.c new file mode 100644 index 0000000..6b87c52 --- /dev/null +++ b/src/third-party/base64/lib/lib_openmp.c @@ -0,0 +1,149 @@ +// This code makes some assumptions on the implementation of +// base64_stream_encode_init(), base64_stream_encode() and base64_stream_decode(). +// Basically these assumptions boil down to that when breaking the src into +// parts, out parts can be written without side effects. +// This is met when: +// 1) base64_stream_encode() and base64_stream_decode() don't use globals; +// 2) the shared variables src and out are not read or written outside of the +// bounds of their parts, i.e. when base64_stream_encode() reads a multiple +// of 3 bytes, it must write no more then a multiple of 4 bytes, not even +// temporarily; +// 3) the state flag can be discarded after base64_stream_encode() and +// base64_stream_decode() on the parts. + +static inline void +base64_encode_openmp + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + , int flags + ) +{ + size_t s; + size_t t; + size_t sum = 0, len, last_len; + struct base64_state state, initial_state; + int num_threads, i; + + // Request a number of threads but not necessarily get them: + #pragma omp parallel + { + // Get the number of threads used from one thread only, + // as num_threads is a shared var: + #pragma omp single + { + num_threads = omp_get_num_threads(); + + // Split the input string into num_threads parts, each + // part a multiple of 3 bytes. The remaining bytes will + // be done later: + len = srclen / (num_threads * 3); + len *= 3; + last_len = srclen - num_threads * len; + + // Init the stream reader: + base64_stream_encode_init(&state, flags); + initial_state = state; + } + + // Single has an implicit barrier for all threads to wait here + // for the above to complete: + #pragma omp for firstprivate(state) private(s) reduction(+:sum) schedule(static,1) + for (i = 0; i < num_threads; i++) + { + // Feed each part of the string to the stream reader: + base64_stream_encode(&state, src + i * len, len, out + i * len * 4 / 3, &s); + sum += s; + } + } + + // As encoding should never fail and we encode an exact multiple + // of 3 bytes, we can discard state: + state = initial_state; + + // Encode the remaining bytes: + base64_stream_encode(&state, src + num_threads * len, last_len, out + num_threads * len * 4 / 3, &s); + + // Finalize the stream by writing trailer if any: + base64_stream_encode_final(&state, out + num_threads * len * 4 / 3 + s, &t); + + // Final output length is stream length plus tail: + sum += s + t; + *outlen = sum; +} + +static inline int +base64_decode_openmp + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + , int flags + ) +{ + int num_threads, result = 0, i; + size_t sum = 0, len, last_len, s; + struct base64_state state, initial_state; + + // Request a number of threads but not necessarily get them: + #pragma omp parallel + { + // Get the number of threads used from one thread only, + // as num_threads is a shared var: + #pragma omp single + { + num_threads = omp_get_num_threads(); + + // Split the input string into num_threads parts, each + // part a multiple of 4 bytes. The remaining bytes will + // be done later: + len = srclen / (num_threads * 4); + len *= 4; + last_len = srclen - num_threads * len; + + // Init the stream reader: + base64_stream_decode_init(&state, flags); + + initial_state = state; + } + + // Single has an implicit barrier to wait here for the above to + // complete: + #pragma omp for firstprivate(state) private(s) reduction(+:sum, result) schedule(static,1) + for (i = 0; i < num_threads; i++) + { + int this_result; + + // Feed each part of the string to the stream reader: + this_result = base64_stream_decode(&state, src + i * len, len, out + i * len * 3 / 4, &s); + sum += s; + result += this_result; + } + } + + // If `result' equals `-num_threads', then all threads returned -1, + // indicating that the requested codec is not available: + if (result == -num_threads) { + return -1; + } + + // If `result' does not equal `num_threads', then at least one of the + // threads hit a decode error: + if (result != num_threads) { + return 0; + } + + // So far so good, now decode whatever remains in the buffer. Reuse the + // initial state, since we are at a 4-byte boundary: + state = initial_state; + result = base64_stream_decode(&state, src + num_threads * len, last_len, out + num_threads * len * 3 / 4, &s); + sum += s; + *outlen = sum; + + // If when decoding a whole block, we're still waiting for input then fail: + if (result && (state.bytes == 0)) { + return result; + } + return 0; +} diff --git a/src/third-party/base64/lib/tables/table_dec_32bit.h b/src/third-party/base64/lib/tables/table_dec_32bit.h new file mode 100644 index 0000000..f5d951f --- /dev/null +++ b/src/third-party/base64/lib/tables/table_dec_32bit.h @@ -0,0 +1,393 @@ +#include <stdint.h> +#define CHAR62 '+' +#define CHAR63 '/' +#define CHARPAD '=' + + +#if BASE64_LITTLE_ENDIAN + + +/* SPECIAL DECODE TABLES FOR LITTLE ENDIAN (INTEL) CPUS */ + +const uint32_t base64_table_dec_32bit_d0[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x000000f8, 0xffffffff, 0xffffffff, 0xffffffff, 0x000000fc, +0x000000d0, 0x000000d4, 0x000000d8, 0x000000dc, 0x000000e0, 0x000000e4, +0x000000e8, 0x000000ec, 0x000000f0, 0x000000f4, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00000004, 0x00000008, 0x0000000c, 0x00000010, 0x00000014, 0x00000018, +0x0000001c, 0x00000020, 0x00000024, 0x00000028, 0x0000002c, 0x00000030, +0x00000034, 0x00000038, 0x0000003c, 0x00000040, 0x00000044, 0x00000048, +0x0000004c, 0x00000050, 0x00000054, 0x00000058, 0x0000005c, 0x00000060, +0x00000064, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x00000068, 0x0000006c, 0x00000070, 0x00000074, 0x00000078, +0x0000007c, 0x00000080, 0x00000084, 0x00000088, 0x0000008c, 0x00000090, +0x00000094, 0x00000098, 0x0000009c, 0x000000a0, 0x000000a4, 0x000000a8, +0x000000ac, 0x000000b0, 0x000000b4, 0x000000b8, 0x000000bc, 0x000000c0, +0x000000c4, 0x000000c8, 0x000000cc, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +const uint32_t base64_table_dec_32bit_d1[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x0000e003, 0xffffffff, 0xffffffff, 0xffffffff, 0x0000f003, +0x00004003, 0x00005003, 0x00006003, 0x00007003, 0x00008003, 0x00009003, +0x0000a003, 0x0000b003, 0x0000c003, 0x0000d003, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00001000, 0x00002000, 0x00003000, 0x00004000, 0x00005000, 0x00006000, +0x00007000, 0x00008000, 0x00009000, 0x0000a000, 0x0000b000, 0x0000c000, +0x0000d000, 0x0000e000, 0x0000f000, 0x00000001, 0x00001001, 0x00002001, +0x00003001, 0x00004001, 0x00005001, 0x00006001, 0x00007001, 0x00008001, +0x00009001, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x0000a001, 0x0000b001, 0x0000c001, 0x0000d001, 0x0000e001, +0x0000f001, 0x00000002, 0x00001002, 0x00002002, 0x00003002, 0x00004002, +0x00005002, 0x00006002, 0x00007002, 0x00008002, 0x00009002, 0x0000a002, +0x0000b002, 0x0000c002, 0x0000d002, 0x0000e002, 0x0000f002, 0x00000003, +0x00001003, 0x00002003, 0x00003003, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +const uint32_t base64_table_dec_32bit_d2[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x00800f00, 0xffffffff, 0xffffffff, 0xffffffff, 0x00c00f00, +0x00000d00, 0x00400d00, 0x00800d00, 0x00c00d00, 0x00000e00, 0x00400e00, +0x00800e00, 0x00c00e00, 0x00000f00, 0x00400f00, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00400000, 0x00800000, 0x00c00000, 0x00000100, 0x00400100, 0x00800100, +0x00c00100, 0x00000200, 0x00400200, 0x00800200, 0x00c00200, 0x00000300, +0x00400300, 0x00800300, 0x00c00300, 0x00000400, 0x00400400, 0x00800400, +0x00c00400, 0x00000500, 0x00400500, 0x00800500, 0x00c00500, 0x00000600, +0x00400600, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x00800600, 0x00c00600, 0x00000700, 0x00400700, 0x00800700, +0x00c00700, 0x00000800, 0x00400800, 0x00800800, 0x00c00800, 0x00000900, +0x00400900, 0x00800900, 0x00c00900, 0x00000a00, 0x00400a00, 0x00800a00, +0x00c00a00, 0x00000b00, 0x00400b00, 0x00800b00, 0x00c00b00, 0x00000c00, +0x00400c00, 0x00800c00, 0x00c00c00, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +const uint32_t base64_table_dec_32bit_d3[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x003e0000, 0xffffffff, 0xffffffff, 0xffffffff, 0x003f0000, +0x00340000, 0x00350000, 0x00360000, 0x00370000, 0x00380000, 0x00390000, +0x003a0000, 0x003b0000, 0x003c0000, 0x003d0000, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00010000, 0x00020000, 0x00030000, 0x00040000, 0x00050000, 0x00060000, +0x00070000, 0x00080000, 0x00090000, 0x000a0000, 0x000b0000, 0x000c0000, +0x000d0000, 0x000e0000, 0x000f0000, 0x00100000, 0x00110000, 0x00120000, +0x00130000, 0x00140000, 0x00150000, 0x00160000, 0x00170000, 0x00180000, +0x00190000, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x001a0000, 0x001b0000, 0x001c0000, 0x001d0000, 0x001e0000, +0x001f0000, 0x00200000, 0x00210000, 0x00220000, 0x00230000, 0x00240000, +0x00250000, 0x00260000, 0x00270000, 0x00280000, 0x00290000, 0x002a0000, +0x002b0000, 0x002c0000, 0x002d0000, 0x002e0000, 0x002f0000, 0x00300000, +0x00310000, 0x00320000, 0x00330000, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +#else + + +/* SPECIAL DECODE TABLES FOR BIG ENDIAN (IBM/MOTOROLA/SUN) CPUS */ + +const uint32_t base64_table_dec_32bit_d0[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xf8000000, 0xffffffff, 0xffffffff, 0xffffffff, 0xfc000000, +0xd0000000, 0xd4000000, 0xd8000000, 0xdc000000, 0xe0000000, 0xe4000000, +0xe8000000, 0xec000000, 0xf0000000, 0xf4000000, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x04000000, 0x08000000, 0x0c000000, 0x10000000, 0x14000000, 0x18000000, +0x1c000000, 0x20000000, 0x24000000, 0x28000000, 0x2c000000, 0x30000000, +0x34000000, 0x38000000, 0x3c000000, 0x40000000, 0x44000000, 0x48000000, +0x4c000000, 0x50000000, 0x54000000, 0x58000000, 0x5c000000, 0x60000000, +0x64000000, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x68000000, 0x6c000000, 0x70000000, 0x74000000, 0x78000000, +0x7c000000, 0x80000000, 0x84000000, 0x88000000, 0x8c000000, 0x90000000, +0x94000000, 0x98000000, 0x9c000000, 0xa0000000, 0xa4000000, 0xa8000000, +0xac000000, 0xb0000000, 0xb4000000, 0xb8000000, 0xbc000000, 0xc0000000, +0xc4000000, 0xc8000000, 0xcc000000, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +const uint32_t base64_table_dec_32bit_d1[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x03e00000, 0xffffffff, 0xffffffff, 0xffffffff, 0x03f00000, +0x03400000, 0x03500000, 0x03600000, 0x03700000, 0x03800000, 0x03900000, +0x03a00000, 0x03b00000, 0x03c00000, 0x03d00000, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00100000, 0x00200000, 0x00300000, 0x00400000, 0x00500000, 0x00600000, +0x00700000, 0x00800000, 0x00900000, 0x00a00000, 0x00b00000, 0x00c00000, +0x00d00000, 0x00e00000, 0x00f00000, 0x01000000, 0x01100000, 0x01200000, +0x01300000, 0x01400000, 0x01500000, 0x01600000, 0x01700000, 0x01800000, +0x01900000, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x01a00000, 0x01b00000, 0x01c00000, 0x01d00000, 0x01e00000, +0x01f00000, 0x02000000, 0x02100000, 0x02200000, 0x02300000, 0x02400000, +0x02500000, 0x02600000, 0x02700000, 0x02800000, 0x02900000, 0x02a00000, +0x02b00000, 0x02c00000, 0x02d00000, 0x02e00000, 0x02f00000, 0x03000000, +0x03100000, 0x03200000, 0x03300000, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +const uint32_t base64_table_dec_32bit_d2[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x000f8000, 0xffffffff, 0xffffffff, 0xffffffff, 0x000fc000, +0x000d0000, 0x000d4000, 0x000d8000, 0x000dc000, 0x000e0000, 0x000e4000, +0x000e8000, 0x000ec000, 0x000f0000, 0x000f4000, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00004000, 0x00008000, 0x0000c000, 0x00010000, 0x00014000, 0x00018000, +0x0001c000, 0x00020000, 0x00024000, 0x00028000, 0x0002c000, 0x00030000, +0x00034000, 0x00038000, 0x0003c000, 0x00040000, 0x00044000, 0x00048000, +0x0004c000, 0x00050000, 0x00054000, 0x00058000, 0x0005c000, 0x00060000, +0x00064000, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x00068000, 0x0006c000, 0x00070000, 0x00074000, 0x00078000, +0x0007c000, 0x00080000, 0x00084000, 0x00088000, 0x0008c000, 0x00090000, +0x00094000, 0x00098000, 0x0009c000, 0x000a0000, 0x000a4000, 0x000a8000, +0x000ac000, 0x000b0000, 0x000b4000, 0x000b8000, 0x000bc000, 0x000c0000, +0x000c4000, 0x000c8000, 0x000cc000, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +const uint32_t base64_table_dec_32bit_d3[256] = { +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x00003e00, 0xffffffff, 0xffffffff, 0xffffffff, 0x00003f00, +0x00003400, 0x00003500, 0x00003600, 0x00003700, 0x00003800, 0x00003900, +0x00003a00, 0x00003b00, 0x00003c00, 0x00003d00, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00000100, 0x00000200, 0x00000300, 0x00000400, 0x00000500, 0x00000600, +0x00000700, 0x00000800, 0x00000900, 0x00000a00, 0x00000b00, 0x00000c00, +0x00000d00, 0x00000e00, 0x00000f00, 0x00001000, 0x00001100, 0x00001200, +0x00001300, 0x00001400, 0x00001500, 0x00001600, 0x00001700, 0x00001800, +0x00001900, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0x00001a00, 0x00001b00, 0x00001c00, 0x00001d00, 0x00001e00, +0x00001f00, 0x00002000, 0x00002100, 0x00002200, 0x00002300, 0x00002400, +0x00002500, 0x00002600, 0x00002700, 0x00002800, 0x00002900, 0x00002a00, +0x00002b00, 0x00002c00, 0x00002d00, 0x00002e00, 0x00002f00, 0x00003000, +0x00003100, 0x00003200, 0x00003300, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, +0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff +}; + + +#endif diff --git a/src/third-party/base64/lib/tables/table_enc_12bit.h b/src/third-party/base64/lib/tables/table_enc_12bit.h new file mode 100644 index 0000000..2bc0d23 --- /dev/null +++ b/src/third-party/base64/lib/tables/table_enc_12bit.h @@ -0,0 +1,1031 @@ +#include <stdint.h> + +const uint16_t base64_table_enc_12bit[] = { +#if BASE64_LITTLE_ENDIAN + 0x4141U, 0x4241U, 0x4341U, 0x4441U, 0x4541U, 0x4641U, 0x4741U, 0x4841U, + 0x4941U, 0x4A41U, 0x4B41U, 0x4C41U, 0x4D41U, 0x4E41U, 0x4F41U, 0x5041U, + 0x5141U, 0x5241U, 0x5341U, 0x5441U, 0x5541U, 0x5641U, 0x5741U, 0x5841U, + 0x5941U, 0x5A41U, 0x6141U, 0x6241U, 0x6341U, 0x6441U, 0x6541U, 0x6641U, + 0x6741U, 0x6841U, 0x6941U, 0x6A41U, 0x6B41U, 0x6C41U, 0x6D41U, 0x6E41U, + 0x6F41U, 0x7041U, 0x7141U, 0x7241U, 0x7341U, 0x7441U, 0x7541U, 0x7641U, + 0x7741U, 0x7841U, 0x7941U, 0x7A41U, 0x3041U, 0x3141U, 0x3241U, 0x3341U, + 0x3441U, 0x3541U, 0x3641U, 0x3741U, 0x3841U, 0x3941U, 0x2B41U, 0x2F41U, + 0x4142U, 0x4242U, 0x4342U, 0x4442U, 0x4542U, 0x4642U, 0x4742U, 0x4842U, + 0x4942U, 0x4A42U, 0x4B42U, 0x4C42U, 0x4D42U, 0x4E42U, 0x4F42U, 0x5042U, + 0x5142U, 0x5242U, 0x5342U, 0x5442U, 0x5542U, 0x5642U, 0x5742U, 0x5842U, + 0x5942U, 0x5A42U, 0x6142U, 0x6242U, 0x6342U, 0x6442U, 0x6542U, 0x6642U, + 0x6742U, 0x6842U, 0x6942U, 0x6A42U, 0x6B42U, 0x6C42U, 0x6D42U, 0x6E42U, + 0x6F42U, 0x7042U, 0x7142U, 0x7242U, 0x7342U, 0x7442U, 0x7542U, 0x7642U, + 0x7742U, 0x7842U, 0x7942U, 0x7A42U, 0x3042U, 0x3142U, 0x3242U, 0x3342U, + 0x3442U, 0x3542U, 0x3642U, 0x3742U, 0x3842U, 0x3942U, 0x2B42U, 0x2F42U, + 0x4143U, 0x4243U, 0x4343U, 0x4443U, 0x4543U, 0x4643U, 0x4743U, 0x4843U, + 0x4943U, 0x4A43U, 0x4B43U, 0x4C43U, 0x4D43U, 0x4E43U, 0x4F43U, 0x5043U, + 0x5143U, 0x5243U, 0x5343U, 0x5443U, 0x5543U, 0x5643U, 0x5743U, 0x5843U, + 0x5943U, 0x5A43U, 0x6143U, 0x6243U, 0x6343U, 0x6443U, 0x6543U, 0x6643U, + 0x6743U, 0x6843U, 0x6943U, 0x6A43U, 0x6B43U, 0x6C43U, 0x6D43U, 0x6E43U, + 0x6F43U, 0x7043U, 0x7143U, 0x7243U, 0x7343U, 0x7443U, 0x7543U, 0x7643U, + 0x7743U, 0x7843U, 0x7943U, 0x7A43U, 0x3043U, 0x3143U, 0x3243U, 0x3343U, + 0x3443U, 0x3543U, 0x3643U, 0x3743U, 0x3843U, 0x3943U, 0x2B43U, 0x2F43U, + 0x4144U, 0x4244U, 0x4344U, 0x4444U, 0x4544U, 0x4644U, 0x4744U, 0x4844U, + 0x4944U, 0x4A44U, 0x4B44U, 0x4C44U, 0x4D44U, 0x4E44U, 0x4F44U, 0x5044U, + 0x5144U, 0x5244U, 0x5344U, 0x5444U, 0x5544U, 0x5644U, 0x5744U, 0x5844U, + 0x5944U, 0x5A44U, 0x6144U, 0x6244U, 0x6344U, 0x6444U, 0x6544U, 0x6644U, + 0x6744U, 0x6844U, 0x6944U, 0x6A44U, 0x6B44U, 0x6C44U, 0x6D44U, 0x6E44U, + 0x6F44U, 0x7044U, 0x7144U, 0x7244U, 0x7344U, 0x7444U, 0x7544U, 0x7644U, + 0x7744U, 0x7844U, 0x7944U, 0x7A44U, 0x3044U, 0x3144U, 0x3244U, 0x3344U, + 0x3444U, 0x3544U, 0x3644U, 0x3744U, 0x3844U, 0x3944U, 0x2B44U, 0x2F44U, + 0x4145U, 0x4245U, 0x4345U, 0x4445U, 0x4545U, 0x4645U, 0x4745U, 0x4845U, + 0x4945U, 0x4A45U, 0x4B45U, 0x4C45U, 0x4D45U, 0x4E45U, 0x4F45U, 0x5045U, + 0x5145U, 0x5245U, 0x5345U, 0x5445U, 0x5545U, 0x5645U, 0x5745U, 0x5845U, + 0x5945U, 0x5A45U, 0x6145U, 0x6245U, 0x6345U, 0x6445U, 0x6545U, 0x6645U, + 0x6745U, 0x6845U, 0x6945U, 0x6A45U, 0x6B45U, 0x6C45U, 0x6D45U, 0x6E45U, + 0x6F45U, 0x7045U, 0x7145U, 0x7245U, 0x7345U, 0x7445U, 0x7545U, 0x7645U, + 0x7745U, 0x7845U, 0x7945U, 0x7A45U, 0x3045U, 0x3145U, 0x3245U, 0x3345U, + 0x3445U, 0x3545U, 0x3645U, 0x3745U, 0x3845U, 0x3945U, 0x2B45U, 0x2F45U, + 0x4146U, 0x4246U, 0x4346U, 0x4446U, 0x4546U, 0x4646U, 0x4746U, 0x4846U, + 0x4946U, 0x4A46U, 0x4B46U, 0x4C46U, 0x4D46U, 0x4E46U, 0x4F46U, 0x5046U, + 0x5146U, 0x5246U, 0x5346U, 0x5446U, 0x5546U, 0x5646U, 0x5746U, 0x5846U, + 0x5946U, 0x5A46U, 0x6146U, 0x6246U, 0x6346U, 0x6446U, 0x6546U, 0x6646U, + 0x6746U, 0x6846U, 0x6946U, 0x6A46U, 0x6B46U, 0x6C46U, 0x6D46U, 0x6E46U, + 0x6F46U, 0x7046U, 0x7146U, 0x7246U, 0x7346U, 0x7446U, 0x7546U, 0x7646U, + 0x7746U, 0x7846U, 0x7946U, 0x7A46U, 0x3046U, 0x3146U, 0x3246U, 0x3346U, + 0x3446U, 0x3546U, 0x3646U, 0x3746U, 0x3846U, 0x3946U, 0x2B46U, 0x2F46U, + 0x4147U, 0x4247U, 0x4347U, 0x4447U, 0x4547U, 0x4647U, 0x4747U, 0x4847U, + 0x4947U, 0x4A47U, 0x4B47U, 0x4C47U, 0x4D47U, 0x4E47U, 0x4F47U, 0x5047U, + 0x5147U, 0x5247U, 0x5347U, 0x5447U, 0x5547U, 0x5647U, 0x5747U, 0x5847U, + 0x5947U, 0x5A47U, 0x6147U, 0x6247U, 0x6347U, 0x6447U, 0x6547U, 0x6647U, + 0x6747U, 0x6847U, 0x6947U, 0x6A47U, 0x6B47U, 0x6C47U, 0x6D47U, 0x6E47U, + 0x6F47U, 0x7047U, 0x7147U, 0x7247U, 0x7347U, 0x7447U, 0x7547U, 0x7647U, + 0x7747U, 0x7847U, 0x7947U, 0x7A47U, 0x3047U, 0x3147U, 0x3247U, 0x3347U, + 0x3447U, 0x3547U, 0x3647U, 0x3747U, 0x3847U, 0x3947U, 0x2B47U, 0x2F47U, + 0x4148U, 0x4248U, 0x4348U, 0x4448U, 0x4548U, 0x4648U, 0x4748U, 0x4848U, + 0x4948U, 0x4A48U, 0x4B48U, 0x4C48U, 0x4D48U, 0x4E48U, 0x4F48U, 0x5048U, + 0x5148U, 0x5248U, 0x5348U, 0x5448U, 0x5548U, 0x5648U, 0x5748U, 0x5848U, + 0x5948U, 0x5A48U, 0x6148U, 0x6248U, 0x6348U, 0x6448U, 0x6548U, 0x6648U, + 0x6748U, 0x6848U, 0x6948U, 0x6A48U, 0x6B48U, 0x6C48U, 0x6D48U, 0x6E48U, + 0x6F48U, 0x7048U, 0x7148U, 0x7248U, 0x7348U, 0x7448U, 0x7548U, 0x7648U, + 0x7748U, 0x7848U, 0x7948U, 0x7A48U, 0x3048U, 0x3148U, 0x3248U, 0x3348U, + 0x3448U, 0x3548U, 0x3648U, 0x3748U, 0x3848U, 0x3948U, 0x2B48U, 0x2F48U, + 0x4149U, 0x4249U, 0x4349U, 0x4449U, 0x4549U, 0x4649U, 0x4749U, 0x4849U, + 0x4949U, 0x4A49U, 0x4B49U, 0x4C49U, 0x4D49U, 0x4E49U, 0x4F49U, 0x5049U, + 0x5149U, 0x5249U, 0x5349U, 0x5449U, 0x5549U, 0x5649U, 0x5749U, 0x5849U, + 0x5949U, 0x5A49U, 0x6149U, 0x6249U, 0x6349U, 0x6449U, 0x6549U, 0x6649U, + 0x6749U, 0x6849U, 0x6949U, 0x6A49U, 0x6B49U, 0x6C49U, 0x6D49U, 0x6E49U, + 0x6F49U, 0x7049U, 0x7149U, 0x7249U, 0x7349U, 0x7449U, 0x7549U, 0x7649U, + 0x7749U, 0x7849U, 0x7949U, 0x7A49U, 0x3049U, 0x3149U, 0x3249U, 0x3349U, + 0x3449U, 0x3549U, 0x3649U, 0x3749U, 0x3849U, 0x3949U, 0x2B49U, 0x2F49U, + 0x414AU, 0x424AU, 0x434AU, 0x444AU, 0x454AU, 0x464AU, 0x474AU, 0x484AU, + 0x494AU, 0x4A4AU, 0x4B4AU, 0x4C4AU, 0x4D4AU, 0x4E4AU, 0x4F4AU, 0x504AU, + 0x514AU, 0x524AU, 0x534AU, 0x544AU, 0x554AU, 0x564AU, 0x574AU, 0x584AU, + 0x594AU, 0x5A4AU, 0x614AU, 0x624AU, 0x634AU, 0x644AU, 0x654AU, 0x664AU, + 0x674AU, 0x684AU, 0x694AU, 0x6A4AU, 0x6B4AU, 0x6C4AU, 0x6D4AU, 0x6E4AU, + 0x6F4AU, 0x704AU, 0x714AU, 0x724AU, 0x734AU, 0x744AU, 0x754AU, 0x764AU, + 0x774AU, 0x784AU, 0x794AU, 0x7A4AU, 0x304AU, 0x314AU, 0x324AU, 0x334AU, + 0x344AU, 0x354AU, 0x364AU, 0x374AU, 0x384AU, 0x394AU, 0x2B4AU, 0x2F4AU, + 0x414BU, 0x424BU, 0x434BU, 0x444BU, 0x454BU, 0x464BU, 0x474BU, 0x484BU, + 0x494BU, 0x4A4BU, 0x4B4BU, 0x4C4BU, 0x4D4BU, 0x4E4BU, 0x4F4BU, 0x504BU, + 0x514BU, 0x524BU, 0x534BU, 0x544BU, 0x554BU, 0x564BU, 0x574BU, 0x584BU, + 0x594BU, 0x5A4BU, 0x614BU, 0x624BU, 0x634BU, 0x644BU, 0x654BU, 0x664BU, + 0x674BU, 0x684BU, 0x694BU, 0x6A4BU, 0x6B4BU, 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0x376FU, 0x3770U, 0x3771U, 0x3772U, 0x3773U, 0x3774U, 0x3775U, 0x3776U, + 0x3777U, 0x3778U, 0x3779U, 0x377AU, 0x3730U, 0x3731U, 0x3732U, 0x3733U, + 0x3734U, 0x3735U, 0x3736U, 0x3737U, 0x3738U, 0x3739U, 0x372BU, 0x372FU, + 0x3841U, 0x3842U, 0x3843U, 0x3844U, 0x3845U, 0x3846U, 0x3847U, 0x3848U, + 0x3849U, 0x384AU, 0x384BU, 0x384CU, 0x384DU, 0x384EU, 0x384FU, 0x3850U, + 0x3851U, 0x3852U, 0x3853U, 0x3854U, 0x3855U, 0x3856U, 0x3857U, 0x3858U, + 0x3859U, 0x385AU, 0x3861U, 0x3862U, 0x3863U, 0x3864U, 0x3865U, 0x3866U, + 0x3867U, 0x3868U, 0x3869U, 0x386AU, 0x386BU, 0x386CU, 0x386DU, 0x386EU, + 0x386FU, 0x3870U, 0x3871U, 0x3872U, 0x3873U, 0x3874U, 0x3875U, 0x3876U, + 0x3877U, 0x3878U, 0x3879U, 0x387AU, 0x3830U, 0x3831U, 0x3832U, 0x3833U, + 0x3834U, 0x3835U, 0x3836U, 0x3837U, 0x3838U, 0x3839U, 0x382BU, 0x382FU, + 0x3941U, 0x3942U, 0x3943U, 0x3944U, 0x3945U, 0x3946U, 0x3947U, 0x3948U, + 0x3949U, 0x394AU, 0x394BU, 0x394CU, 0x394DU, 0x394EU, 0x394FU, 0x3950U, + 0x3951U, 0x3952U, 0x3953U, 0x3954U, 0x3955U, 0x3956U, 0x3957U, 0x3958U, + 0x3959U, 0x395AU, 0x3961U, 0x3962U, 0x3963U, 0x3964U, 0x3965U, 0x3966U, + 0x3967U, 0x3968U, 0x3969U, 0x396AU, 0x396BU, 0x396CU, 0x396DU, 0x396EU, + 0x396FU, 0x3970U, 0x3971U, 0x3972U, 0x3973U, 0x3974U, 0x3975U, 0x3976U, + 0x3977U, 0x3978U, 0x3979U, 0x397AU, 0x3930U, 0x3931U, 0x3932U, 0x3933U, + 0x3934U, 0x3935U, 0x3936U, 0x3937U, 0x3938U, 0x3939U, 0x392BU, 0x392FU, + 0x2B41U, 0x2B42U, 0x2B43U, 0x2B44U, 0x2B45U, 0x2B46U, 0x2B47U, 0x2B48U, + 0x2B49U, 0x2B4AU, 0x2B4BU, 0x2B4CU, 0x2B4DU, 0x2B4EU, 0x2B4FU, 0x2B50U, + 0x2B51U, 0x2B52U, 0x2B53U, 0x2B54U, 0x2B55U, 0x2B56U, 0x2B57U, 0x2B58U, + 0x2B59U, 0x2B5AU, 0x2B61U, 0x2B62U, 0x2B63U, 0x2B64U, 0x2B65U, 0x2B66U, + 0x2B67U, 0x2B68U, 0x2B69U, 0x2B6AU, 0x2B6BU, 0x2B6CU, 0x2B6DU, 0x2B6EU, + 0x2B6FU, 0x2B70U, 0x2B71U, 0x2B72U, 0x2B73U, 0x2B74U, 0x2B75U, 0x2B76U, + 0x2B77U, 0x2B78U, 0x2B79U, 0x2B7AU, 0x2B30U, 0x2B31U, 0x2B32U, 0x2B33U, + 0x2B34U, 0x2B35U, 0x2B36U, 0x2B37U, 0x2B38U, 0x2B39U, 0x2B2BU, 0x2B2FU, + 0x2F41U, 0x2F42U, 0x2F43U, 0x2F44U, 0x2F45U, 0x2F46U, 0x2F47U, 0x2F48U, + 0x2F49U, 0x2F4AU, 0x2F4BU, 0x2F4CU, 0x2F4DU, 0x2F4EU, 0x2F4FU, 0x2F50U, + 0x2F51U, 0x2F52U, 0x2F53U, 0x2F54U, 0x2F55U, 0x2F56U, 0x2F57U, 0x2F58U, + 0x2F59U, 0x2F5AU, 0x2F61U, 0x2F62U, 0x2F63U, 0x2F64U, 0x2F65U, 0x2F66U, + 0x2F67U, 0x2F68U, 0x2F69U, 0x2F6AU, 0x2F6BU, 0x2F6CU, 0x2F6DU, 0x2F6EU, + 0x2F6FU, 0x2F70U, 0x2F71U, 0x2F72U, 0x2F73U, 0x2F74U, 0x2F75U, 0x2F76U, + 0x2F77U, 0x2F78U, 0x2F79U, 0x2F7AU, 0x2F30U, 0x2F31U, 0x2F32U, 0x2F33U, + 0x2F34U, 0x2F35U, 0x2F36U, 0x2F37U, 0x2F38U, 0x2F39U, 0x2F2BU, 0x2F2FU, +#endif +}; diff --git a/src/third-party/base64/lib/tables/tables.c b/src/third-party/base64/lib/tables/tables.c new file mode 100644 index 0000000..45778b6 --- /dev/null +++ b/src/third-party/base64/lib/tables/tables.c @@ -0,0 +1,40 @@ +#include "tables.h" + +const uint8_t +base64_table_enc_6bit[] = + "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "0123456789" + "+/"; + +// In the lookup table below, note that the value for '=' (character 61) is +// 254, not 255. This character is used for in-band signaling of the end of +// the datastream, and we will use that later. The characters A-Z, a-z, 0-9 +// and + / are mapped to their "decoded" values. The other bytes all map to +// the value 255, which flags them as "invalid input". + +const uint8_t +base64_table_dec_8bit[] = +{ + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 0..15 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 16..31 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62, 255, 255, 255, 63, // 32..47 + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, 255, 254, 255, 255, // 48..63 + 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, // 64..79 + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 255, // 80..95 + 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, // 96..111 + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 255, 255, 255, 255, 255, // 112..127 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 128..143 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +}; + +#if BASE64_WORDSIZE >= 32 +# include "table_dec_32bit.h" +# include "table_enc_12bit.h" +#endif diff --git a/src/third-party/base64/lib/tables/tables.h b/src/third-party/base64/lib/tables/tables.h new file mode 100644 index 0000000..cb74268 --- /dev/null +++ b/src/third-party/base64/lib/tables/tables.h @@ -0,0 +1,23 @@ +#ifndef BASE64_TABLES_H +#define BASE64_TABLES_H + +#include <stdint.h> + +#include "../env.h" + +// These tables are used by all codecs for fallback plain encoding/decoding: +extern const uint8_t base64_table_enc_6bit[]; +extern const uint8_t base64_table_dec_8bit[]; + +// These tables are used for the 32-bit and 64-bit generic decoders: +#if BASE64_WORDSIZE >= 32 +extern const uint32_t base64_table_dec_32bit_d0[]; +extern const uint32_t base64_table_dec_32bit_d1[]; +extern const uint32_t base64_table_dec_32bit_d2[]; +extern const uint32_t base64_table_dec_32bit_d3[]; + +// This table is used by the 32 and 64-bit generic encoders: +extern const uint16_t base64_table_enc_12bit[]; +#endif + +#endif // BASE64_TABLES_H |