1 files changed, 99 insertions, 0 deletions
diff --git a/wrmr.h b/wrmr.h
new file mode 100644
index 0000000..35776a3
--- /dev/null
+++ b/wrmr.h
@@ -0,0 +1,99 @@
+/* wrmr.h */
+/* common definitions used on most projects */
+
+#ifndef WRMR_H
+#define WRMR_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+typedef int8_t i8;
+typedef int16_t i16;
+typedef int32_t i32;
+typedef int64_t i64;
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef size_t usize;
+typedef ptrdiff_t isize;
+typedef intptr_t iptr;
+typedef uintptr_t uptr;
+
+#define BESTRING_(x) #x
+#define BESTRING(x) BESTRING_(x)
+
+#ifdef __has_builtin
+#define HAS_BUILTIN(x) __has_builtin(x)
+#else
+#define HAS_BUILTIN(x) 0
+#endif
+
+#if defined(__i368__) || defined(__x86_64__)
+/*      nop so gdb will break on the trap, not the line after */
+#       define TRAP() __asm__ volatile ("int3; nop")
+#elif HAS_BUILTIN(__builtin_debugtrap)
+#       define TRAP() __builtin_debugtrap()
+#elif HAS_BUILTIN(__builtin_trap) && defined(__STDC_HOSTED__) && (__STDC_HOSTED__ == 0)
+#	define TRAP() __builtin_trap()
+#elif defined(_MSC_VER)
+#       define TRAP() __debugbreak()
+#else
+#	define TRAP() (*(volatile int *)NULL = 0)
+#endif
+
+#ifndef PUT_ERROR_MSG
+#       include <stdio.h>
+#       define PUT_ERROR_MSG(msg) fputs(msg, stderr)
+#endif
+
+#define FILE_LINE_MSG(msg) (__FILE__ ":" BESTRING(__LINE__) ": " msg "\n")
+#define FAIL_WITH_MSG(msg) do { PUT_ERROR_MSG(FILE_LINE_MSG(msg)); TRAP(); } while(0)
+
+#ifdef NDEBUG
+#	define ASSERT(...) do {} while(0)
+#else
+#	define ASSERT(...) do {\
+		if (!(__VA_ARGS__)) FAIL_WITH_MSG("Assertion failed: " #__VA_ARGS__);\
+	} while(0)
+#endif
+
+#ifndef NDEBUG
+#	define UNREACHABLE_MSG(msg) FAIL_WITH_MSG(msg)
+#else
+#       if __STDC_VERSION__ >= 202311L
+#       	define UNREACHABLE_MSG(msg) (unreachable())
+#       elif HAS_BUILTIN(__builtin_unreachable)
+#       	define UNREACHABLE_MSG(msg) (__builtin_unreachable())
+#       elif defined(_MSC_VER)
+#       	define UNREACHABLE_MSG(msg) (__assume(0))
+#       else
+#       	define UNREACHABLE_MSG(msg) do {} while(0)
+#       endif
+#endif
+
+#define UNREACHABLE UNREACHABLE_MSG("unreachable code")
+
+#ifdef NDEBUG
+#	if defined(_MSC_VER)
+#		define ASSUME(...) (__assume(__VA_ARGS__))
+#	elif HAS_BUILTIN(__builtin_assume)
+#		define ASSUME(...) (__builtin_assume(__VA_ARGS__))
+#	endif
+#else
+#	define ASSUME(...) do if (!(__VA_ARGS__)) UNREACHABLE_MSG("assumption failed: " #__VA_ARGS__); while(0)
+#endif
+
+#if __STDC_VERSION__ >= 202311L
+#	define TYPEOF(...) typeof(__VA_ARGS__)
+#else
+#	define TYPEOF(...) __typeof__(__VA_ARGS__)
+#endif
+
+#define COUNTOF(x) (sizeof(x) / sizeof(*(x)))
+#define MOVE(a0, a1, n) memmove(1?(a0):(a1), a1, sizeof(*(a0)) * (n));
+#define COPY(a0, a1, n) memmove(1?(a0):(a1), a1, sizeof(*(a0)) * (n));
+
+#endif