target/riscv: use RISCVException enum in exception helpers

Do a cosmetic change in riscv_raise_exception() to change 'exception'
type from uint32_t to RISCVException, making it a bit clear that the
arg is directly correlated to the RISCVException enum.

As a side effect, change 'excp' type from int to RISCVException in
generate_exception() to guarantee that all callers of
riscv_raise_exception() will use the enum.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250106173734.412353-2-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu.h

@@ -606,7 +606,8 @@ void riscv_translate_code(CPUState *cs, TranslationBlock *tb,
                           int *max_insns, vaddr pc, void *host_pc);
 
 G_NORETURN void riscv_raise_exception(CPURISCVState *env,
-                                      uint32_t exception, uintptr_t pc);
+                                      RISCVException exception,
+                                      uintptr_t pc);
 
 target_ulong riscv_cpu_get_fflags(CPURISCVState *env);
 void riscv_cpu_set_fflags(CPURISCVState *env, target_ulong);

target/riscv/op_helper.c

@@ -27,7 +27,8 @@
 
 /* Exceptions processing helpers */
 G_NORETURN void riscv_raise_exception(CPURISCVState *env,
-                                      uint32_t exception, uintptr_t pc)
+                                      RISCVException exception,
+                                      uintptr_t pc)
 {
     CPUState *cs = env_cpu(env);
     cs->exception_index = exception;

target/riscv/translate.c

@@ -245,7 +245,7 @@ static void gen_update_pc(DisasContext *ctx, target_long diff)
     ctx->pc_save = ctx->base.pc_next + diff;
 }
 
-static void generate_exception(DisasContext *ctx, int excp)
+static void generate_exception(DisasContext *ctx, RISCVException excp)
 {
     gen_update_pc(ctx, 0);
     gen_helper_raise_exception(tcg_env, tcg_constant_i32(excp));