Re: [Qemu-devel] [PATCH 02/10 v12] linux-user: Support tilegx architecture in linux-user

[Chen Gang]

On 6/13/15 21:10, Chen Gang wrote:
> +
> +void cpu_loop(CPUTLGState *env)
> +{
> +    CPUState *cs = CPU(tilegx_env_get_cpu(env));
> +    int trapnr;
> +
> +    while (1) {
> +        cpu_exec_start(cs);
> +        trapnr = cpu_tilegx_exec(env);
> +        cpu_exec_end(cs);
> +        switch (trapnr) {
> +        case TILEGX_EXCP_SYSCALL:
> +            env->regs[TILEGX_R_RE] = do_syscall(env, env->regs[TILEGX_R_NR],
> +                                                env->regs[0], env->regs[1],
> +                                                env->regs[2], env->regs[3],
> +                                                env->regs[4], env->regs[5],
> +                                                env->regs[6], env->regs[7]);
> +            env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(env->regs[TILEGX_R_RE])
> +                                                      ? 
> env->regs[TILEGX_R_RE]

It needs "- env->regs[TILEGX_R_RE]" instead of "env->regs[TILEGX_R_RE]".

For stat64, when return ENOENT, qemu will mark it as -ENOENT, so syscall
should revert it again.

> +                                                      : 0;
> +            break;
> 

Thanks.
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed