bsd-user: Implement RISC-V CPU register cloning and reset functions

Added functions for cloning CPU registers and resetting the CPU state
for RISC-V architecture.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240916155119.14610-4-itachis@FreeBSD.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

diff --git a/bsd-user/riscv/target_arch_cpu.h b/bsd-user/riscv/target_arch_cpu.h
index 9c31d9dc4cb64ba18a396860108691da3062c04a..a93ea3915a14c2d68800e960c7292da42e7323be 100644 (file)
--- a/bsd-user/riscv/target_arch_cpu.h
+++ b/bsd-user/riscv/target_arch_cpu.h
@@ -131,4 +131,18 @@ static inline void target_cpu_loop(CPURISCVState *env)
     }
 }
 
+static inline void target_cpu_clone_regs(CPURISCVState *env, target_ulong newsp)
+{
+    if (newsp) {
+        env->gpr[xSP] = newsp;
+    }
+
+    env->gpr[xA0] = 0;
+    env->gpr[xT0] = 0;
+}
+
+static inline void target_cpu_reset(CPUArchState *env)
+{
+}
+
 #endif /* TARGET_ARCH_CPU_H */