X-Git-Url: https://www.bearssl.org/gitweb//home/git/?p=BearSSL;a=blobdiff_plain;f=src%2Fconfig.h;h=b06807b1c9a8dba45db10a5058c078c67c7e08b2;hp=9eadaf4a78288d3f895aa1665fcb785ca80b3062;hb=8e86598b33f9df81d1f77d6cc32568d9ae119d67;hpb=5f045c759957fdff8c85716e6af99e10901fdac0

diff --git a/src/config.h b/src/config.h
index 9eadaf4..b06807b 100644
--- a/src/config.h
+++ b/src/config.h
@@ -162,4 +162,57 @@
 #define BR_AES_X86NI   1
  */
 
+/*
+ * When BR_SSE2 is enabled, SSE2 intrinsics will be used for some
+ * algorithm implementations that use them (e.g. chacha20_sse2). If this
+ * is not enabled explicitly, then support for SSE2 intrinsics will be
+ * automatically detected. If set explicitly to 0, then SSE2 code will
+ * not be compiled at all.
+ *
+#define BR_SSE2   1
+ */
+
+/*
+ * When BR_POWER8 is enabled, the AES implementation using the POWER ISA
+ * 2.07 opcodes (available on POWER8 processors and later) is compiled.
+ * If this is not enabled explicitly, then that implementation will be
+ * compiled only if a compatible compiler is detected, _and_ the target
+ * architecture is POWER8 or later.
+ *
+#define BR_POWER8   1
+ */
+
+/*
+ * When BR_INT128 is enabled, then code using the 'unsigned __int64'
+ * and 'unsigned __int128' types will be used to leverage 64x64->128
+ * unsigned multiplications. This should work with GCC and compatible
+ * compilers on 64-bit architectures.
+ *
+#define BR_INT128   1
+ */
+
+/*
+ * When BR_UMUL128 is enabled, then code using the '_umul128()' and
+ * '_addcarry_u64()' intrinsics will be used to implement 64x64->128
+ * unsigned multiplications. This should work on Visual C on x64 systems.
+ *
+#define BR_UMUL128   1
+ */
+
+/*
+ * When BR_LE_UNALIGNED is enabled, then the current architecture is
+ * assumed to use little-endian encoding for integers, and to tolerate
+ * unaligned accesses with no or minimal time penalty.
+ *
+#define BR_LE_UNALIGNED   1
+ */
+
+/*
+ * When BR_BE_UNALIGNED is enabled, then the current architecture is
+ * assumed to use little-endian encoding for integers, and to tolerate
+ * unaligned accesses with no or minimal time penalty.
+ *
+#define BR_BE_UNALIGNED   1
+ */
+
 #endif