fix: breakpad use miniz

third_party/zlib-ng/arch/x86/chunkset_ssse3.c

@@ -0,0 +1,86 @@
+/* chunkset_ssse3.c -- SSSE3 inline functions to copy small data chunks.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zbuild.h"
+#include "zmemory.h"
+
+#if defined(X86_SSSE3)
+#include <immintrin.h>
+#include "../generic/chunk_permute_table.h"
+
+typedef __m128i chunk_t;
+
+#define HAVE_CHUNKMEMSET_2
+#define HAVE_CHUNKMEMSET_4
+#define HAVE_CHUNKMEMSET_8
+#define HAVE_CHUNK_MAG
+
+static const lut_rem_pair perm_idx_lut[13] = {
+    {0, 1},      /* 3 */
+    {0, 0},      /* don't care */
+    {1 * 32, 1}, /* 5 */
+    {2 * 32, 4}, /* 6 */
+    {3 * 32, 2}, /* 7 */
+    {0 * 32, 0}, /* don't care */
+    {4 * 32, 7}, /* 9 */
+    {5 * 32, 6}, /* 10 */
+    {6 * 32, 5}, /* 11 */
+    {7 * 32, 4}, /* 12 */
+    {8 * 32, 3}, /* 13 */
+    {9 * 32, 2}, /* 14 */
+    {10 * 32, 1},/* 15 */
+};
+
+
+static inline void chunkmemset_2(uint8_t *from, chunk_t *chunk) {
+    *chunk = _mm_set1_epi16(zng_memread_2(from));
+}
+
+static inline void chunkmemset_4(uint8_t *from, chunk_t *chunk) {
+    *chunk = _mm_set1_epi32(zng_memread_4(from));
+}
+
+static inline void chunkmemset_8(uint8_t *from, chunk_t *chunk) {
+    *chunk = _mm_set1_epi64x(zng_memread_8(from));
+}
+
+static inline void loadchunk(uint8_t const *s, chunk_t *chunk) {
+    *chunk = _mm_loadu_si128((__m128i *)s);
+}
+
+static inline void storechunk(uint8_t *out, chunk_t *chunk) {
+    _mm_storeu_si128((__m128i *)out, *chunk);
+}
+
+static inline chunk_t GET_CHUNK_MAG(uint8_t *buf, uint32_t *chunk_rem, uint32_t dist) {
+    lut_rem_pair lut_rem = perm_idx_lut[dist - 3];
+    __m128i perm_vec, ret_vec;
+    /* Important to note:
+     * This is _not_ to subvert the memory sanitizer but to instead unpoison some
+     * bytes we willingly and purposefully load uninitialized that we swizzle over
+     * in a vector register, anyway.  If what we assume is wrong about what is used,
+     * the memory sanitizer will still usefully flag it */
+    __msan_unpoison(buf + dist, 16 - dist);
+    ret_vec = _mm_loadu_si128((__m128i*)buf);
+    *chunk_rem = lut_rem.remval;
+
+    perm_vec = _mm_load_si128((__m128i*)(permute_table + lut_rem.idx));
+    ret_vec = _mm_shuffle_epi8(ret_vec, perm_vec);
+
+    return ret_vec;
+}
+
+#define CHUNKSIZE        chunksize_ssse3
+#define CHUNKMEMSET      chunkmemset_ssse3
+#define CHUNKMEMSET_SAFE chunkmemset_safe_ssse3
+#define CHUNKCOPY        chunkcopy_ssse3
+#define CHUNKUNROLL      chunkunroll_ssse3
+
+#include "chunkset_tpl.h"
+
+#define INFLATE_FAST     inflate_fast_ssse3
+
+#include "inffast_tpl.h"
+
+#endif