void sig_handler_common_tt(int sig, void *sc_ptr) { struct sigcontext *sc = sc_ptr; struct tt_regs save_regs, *r; struct signal_info *info; int save_errno = errno, is_user; unprotect_kernel_mem(); r = &TASK_REGS(get_current())->tt; save_regs = *r; is_user = user_context(SC_SP(sc)); r->sc = sc; if(sig != SIGUSR2) r->syscall = -1; change_sig(SIGUSR1, 1); info = &sig_info[sig]; if(!info->is_irq) unblock_signals(); (*info->handler)(sig, (union uml_pt_regs *) r); if(is_user){ interrupt_end(); block_signals(); change_sig(SIGUSR1, 0); set_user_mode(NULL); } *r = save_regs; errno = save_errno; if(is_user) protect_kernel_mem(); }
int main(int argc, char **argv) { Image<float> input(10, 10); for (int y = 0; y < 10; y++) { for (int x = 0; x < 10; x++) { input(x, y) = 1; } } Image<float> output(10, 10); user_context(input, context_pointer, output); assert(called_malloc && called_free); assert(called_trace && !called_error); Image<float> big_output(11, 11); user_context(input, context_pointer, big_output); assert(called_error); printf("Success!\n"); return 0; }
void timer_handler(int sig, union uml_pt_regs *regs) { local_irq_disable(); irq_enter(); update_process_times(CHOOSE_MODE( (UPT_SC(regs) && user_context(UPT_SP(regs))), (regs)->skas.is_user)); irq_exit(); local_irq_enable(); if(current_thread->cpu == 0) timer_irq(regs); }
void sig_handler_common_tt(int sig, void *sc_ptr) { struct sigcontext *sc = sc_ptr; struct tt_regs save_regs, *r; struct signal_info *info; int save_errno = errno, is_user; unprotect_kernel_mem(); /* This is done because to allow SIGSEGV to be delivered inside a SEGV * handler. This can happen in copy_user, and if SEGV is disabled, * the process will die. */ if(sig == SIGSEGV) change_sig(SIGSEGV, 1); /* This is done because to allow SIGSEGV to be delivered inside a SEGV * handler. This can happen in copy_user, and if SEGV is disabled, * the process will die. */ if(sig == SIGSEGV) change_sig(SIGSEGV, 1); r = &TASK_REGS(get_current())->tt; save_regs = *r; is_user = user_context(SC_SP(sc)); r->sc = sc; if(sig != SIGUSR2) r->syscall = -1; info = &sig_info[sig]; if(!info->is_irq) unblock_signals(); (*info->handler)(sig, (union uml_pt_regs *) r); if(is_user){ interrupt_end(); block_signals(); set_user_mode(NULL); } *r = save_regs; errno = save_errno; if(is_user) protect_kernel_mem(); }