long do_rt_sigreturn(CPUX86State *env) { abi_ulong frame_addr; struct rt_sigframe *frame; sigset_t set; frame_addr = env->regs[R_ESP] - 4; trace_user_do_rt_sigreturn(env, frame_addr); if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) goto badframe; target_to_host_sigset(&set, &frame->uc.tuc_sigmask); set_sigmask(&set); if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) { goto badframe; } if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) { goto badframe; } unlock_user_struct(frame, frame_addr, 0); return -TARGET_QEMU_ESIGRETURN; badframe: unlock_user_struct(frame, frame_addr, 0); force_sig(TARGET_SIGSEGV); return 0; }
long do_rt_sigreturn(CPUX86State *env) { abi_ulong frame_addr; struct rt_sigframe *frame; sigset_t set; frame_addr = env->regs[R_ESP] - 4; trace_user_do_rt_sigreturn(env, frame_addr); if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) goto badframe; target_to_host_sigset(&set, &frame->uc.tuc_sigmask); set_sigmask(&set); if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) { goto badframe; } if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) { goto badframe; } unlock_user_struct(frame, frame_addr, 0); return -TARGET_QEMU_ESIGRETURN; badframe: unlock_user_struct(frame, frame_addr, 0); force_sig(TARGET_SIGSEGV); return 0; }