linux-user: Introduce cpu_clone_regs_parent

We will need a target-specific hook for adjusting registers
in the parent during clone.  Add an empty inline function for
each target, and invoke it from the proper places.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191106113318.10226-11-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

1 files changed, 4 insertions, 0 deletions

diff --git a/linux-user/riscv/target_cpu.h b/linux-user/riscv/target_cpu.h
index 26dcafab1c..9c642367a3 100644
--- a/linux-user/riscv/target_cpu.h
+++ b/linux-user/riscv/target_cpu.h
@@ -11,6 +11,10 @@ static inline void cpu_clone_regs_child(CPURISCVState *env, target_ulong newsp,
     env->gpr[xA0] = 0;
 }
 
+static inline void cpu_clone_regs_parent(CPURISCVState *env, unsigned flags)
+{
+}
+
 static inline void cpu_set_tls(CPURISCVState *env, target_ulong newtls)
 {
     env->gpr[xTP] = newtls;