gdbstub: move fromhex/tohex routines to internals

These will be needed from multiple places in the code. They are
declared as inline so move to the header and fix up to modern coding
style.

The only other place that messes with hex stuff at the moment is the
URI handling in utils but that would be more code churn so leave for
now.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230302190846.2593720-9-alex.bennee@linaro.org>
Message-Id: <20230303025805.625589-9-richard.henderson@linaro.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/gdbstub/internals.h b/gdbstub/internals.h
index 32daaf73a3..b4620f99c4 100644
--- a/gdbstub/internals.h
+++ b/gdbstub/internals.h
@@ -57,6 +57,33 @@ typedef struct GDBState {
     int supported_sstep_flags;
 } GDBState;
 
+
+/*
+ * Inline utility function, convert from int to hex and back
+ */
+
+static inline int fromhex(int v)
+{
+    if (v >= '0' && v <= '9') {
+        return v - '0';
+    } else if (v >= 'A' && v <= 'F') {
+        return v - 'A' + 10;
+    } else if (v >= 'a' && v <= 'f') {
+        return v - 'a' + 10;
+    } else {
+        return 0;
+    }
+}
+
+static inline int tohex(int v)
+{
+    if (v < 10) {
+        return v + '0';
+    } else {
+        return v - 10 + 'a';
+    }
+}
+
 /*
  * Break/Watch point support - there is an implementation for softmmu
  * and user mode.