target/riscv: Move insn_len to internals.h

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250425152311.804338-7-richard.henderson@linaro.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/internals.h

@@ -201,4 +201,9 @@ static inline target_ulong adjust_addr_virt(CPURISCVState *env,
     return adjust_addr_body(env, addr, true);
 }
 
+static inline int insn_len(uint16_t first_word)
+{
+    return (first_word & 3) == 3 ? 4 : 2;
+}
+
 #endif

target/riscv/translate.c

@@ -1209,11 +1209,6 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
 /* The specification allows for longer insns, but not supported by qemu. */
 #define MAX_INSN_LEN  4
 
-static inline int insn_len(uint16_t first_word)
-{
-    return (first_word & 3) == 3 ? 4 : 2;
-}
-
 const RISCVDecoder decoder_table[] = {
     { always_true_p, decode_insn32 },
     { has_xthead_p, decode_xthead},