Impl writing memory via GDB

1 files changed, 22 insertions, 0 deletions

diff --git a/utils.hpp b/utils.hpp
index 4a5e84d..4a83a8d 100644
--- a/utils.hpp
+++ b/utils.hpp
@@ -10,3 +10,25 @@
 #else
 #   define UNREACHABLE
 #endif
+
+#include <stdint.h>
+
+namespace Utils {
+
+static inline uint8_t ParseByteFromHexChars(uint8_t first, uint8_t second)
+{
+    // Assume, that given bytes are valid hex digits in ASCII
+    first = ((first & 0x40) ? (first + 9) : first) & 0x0f;
+    second = ((second & 0x40) ? (second + 9) : second) & 0x0f;
+    return ((first << 4) | second) & 0xff;
+}
+
+static inline void ConvertByteToHex(uint8_t byte, char* out)
+{
+    const uint8_t c1 = (byte >> 4) & 0x0f;
+    const uint8_t c2 = byte& 0x0f;
+    out[0] = static_cast<char>(c1 < 0xa ? c1 + '0' : c1 + ('a' - 0xa));
+    out[1] = static_cast<char>(c2 < 0xa ? c2 + '0' : c2 + ('a' - 0xa));
+}
+
+}