X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/08e2be29746248898204da1ff23e0629ec29b644..HEAD:/base/dispatch.h

diff --git a/base/dispatch.h b/base/dispatch.h
index bcf9a13d..9f335345 100644
--- a/base/dispatch.h
+++ b/base/dispatch.h
@@ -138,8 +138,34 @@ stcls ret ext argdecls { rtn dflt args; }
 
 #endif
 
+/* --- Some macros for producing useful debugging --- */
+
+#define DISPATCH_PICK_COND(what, func, cond) do {			\
+  if (cond) {								\
+    dispatch_debug("picked `%s' for `%s'", #func, #what);		\
+    return (func);							\
+  }									\
+} while (0)
+#define DISPATCH_PICK_FALLBACK(what, func) do {				\
+  dispatch_debug("using default `%s'", #what);				\
+  return (func);							\
+} while (0)
+
 /*----- Functions provided ------------------------------------------------*/
 
+/* --- @dispatch_debug@ --- *
+ *
+ * Arguments:	@const char *fmt@ = a format string
+ *		@...@ = additional arguments
+ *
+ * Returns:	---
+ *
+ * Use:		Writes a formatted message to standard output if dispatch
+ *		debugging is enabled.
+ */
+
+extern void dispatch_debug(const char */*fmt*/, ...);
+
 /* --- @cpu_feature_p@ --- *
  *
  * Arguments:	@unsigned feat@ = a @CPUFEAT_...@ code
@@ -148,7 +174,20 @@ stcls ret ext argdecls { rtn dflt args; }
  */
 
 enum {
-  CPUFEAT_X86_SSE2			/* Streaming SIMD Extensions 2 */
+  CPUFEAT_X86_SSE2,			/* Streaming SIMD Extensions 2 */
+  CPUFEAT_X86_AESNI,			/* AES Native Instructions */
+  CPUFEAT_ARM_VFP,			/* VFP floating-point (v3 or v4) */
+  CPUFEAT_ARM_NEON,			/* Advanced SIMD (v1 or v2) */
+  CPUFEAT_ARM_V4,			/* VFPv4 and/or SIMD v2 */
+  CPUFEAT_ARM_D32,			/* 32 double registers, not 16 */
+  CPUFEAT_X86_RDRAND,			/* Built-in cooked entropy source */
+  CPUFEAT_ARM_AES,			/* AES instructions */
+  CPUFEAT_X86_AVX,			/* AVX 1 (i.e., 256-bit YMM regs) */
+  CPUFEAT_X86_SSSE3,			/* Supplementary SSE 3 */
+  CPUFEAT_X86_PCLMUL,			/* Carry-less multiplication */
+  CPUFEAT_ARM_PMULL,			/* Polynomial multiplication */
+  CPUFEAT_X86_RDSEED,			/* Built-in raw entropy source */
+  CPUFEAT_X86_AVX2			/* AVX 2 (256-bit integer ops) */
 };
 
 extern int cpu_feature_p(int /*feat*/);