linux-user/nios2: Drop syscall 0 "workaround"

Syscall 0 is __NR_io_setup for this target; there is nothing
to work around.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Fixes: a0a839b65b6 ("nios2: Add usermode binaries emulation")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-4-richard.henderson@linaro.org>

diff --git a/linux-user/nios2/cpu_loop.c b/linux-user/nios2/cpu_loop.c
index 2e92967..91737c5 100644 (file)
--- a/linux-user/nios2/cpu_loop.c
+++ b/linux-user/nios2/cpu_loop.c
@@ -55,10 +55,6 @@ void cpu_loop(CPUNios2State *env)
                                  env->regs[7], env->regs[8], env->regs[9],
                                  0, 0);
 
-                if (env->regs[2] == 0) {    /* FIXME: syscall 0 workaround */
-                    ret = 0;
-                }
-
                 env->regs[2] = abs(ret);
                 /* Return value is 0..4096 */
                 env->regs[7] = ret > 0xfffff000u;