Init repository

1 files changed, 30 insertions, 0 deletions

diff --git a/src/libs/utils.h b/src/libs/utils.h
new file mode 100644
index 0000000..140f1fd
--- /dev/null
+++ b/src/libs/utils.h
@@ -0,0 +1,30 @@
+#ifndef __UTILS__
+#define __UTILS__
+
+#include "types.h"
+
+// General operations
+#define STR32(ADDR,VALUE) *((volatile unsigned int*) (ADDR))=(VALUE)
+#define LDR32(ADDR) (*((volatile unsigned int*) (ADDR)))
+
+// Registers operations
+#define REG_WRITE(ADDR,VALUE) STR32(ADDR,VALUE)
+#define REG_WRITE_XOR(ADDR,VALUE) STR32(ADDR+0x1000,VALUE)
+#define REG_WRITE_BITMAP_SET(ADDR,VALUE) STR32(ADDR+0x2000,VALUE)
+#define REG_WRITE_BITMAP_CLEAR(ADDR,VALUE) STR32(ADDR+0x3000,VALUE)
+#define REG_READ(ADDR) LDR32(ADDR)
+
+// Memory operations
+void memcpy(u8 *dst, u8 *src, u32 size); // TODO: Improve perf with 32bits memory transactions
+void memset(u8 *start, u8 value, u32 size); // TODO: Improve perf with 32bits memory transactions
+
+// Computations
+int modulo(int dividend, int divisor); // Assumes that both argument are positve (TODO improve this)
+
+// Strings (not these functions do not follow libc standards and are buggy)
+int strlen(char * cp);
+int wordlen(char *s);
+u8 strcmp(char *str1, char*str2);
+u8 strncmp(char *str1, char*str2, int n);
+
+#endif