1 /* 2 * Support for executing code in new tasks and threads. 3 * 4 * Copyright (C) 2022, 2023, 2024 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <mutex> 25 26 #include <exec/elf.h> 27 #include <exec/external_pager.h> 28 #include <exec/memory.h> 29 #include <exec/process.h> 30 #include <exec/process_monitor.h> 31 #include <ipc/map.h> 32 33 34 35 /* Process creator functionality. */ 36 37 class ProcessCreating 38 { 39 protected: 40 std::mutex _lock; 41 42 /* Region mapper program file. */ 43 44 const char *_rm_filename; 45 file_t *_rm_file; 46 47 /* External pager and process monitor. */ 48 49 ExternalPager *_exec_pager = NULL; 50 ProcessMonitor *_monitor = NULL; 51 52 /* Process construction. */ 53 54 Process _process; 55 56 /* Stack and payload descriptions. */ 57 58 ExplicitSegment *_rm_stack = NULL; 59 Payload *_rm_payload = NULL; 60 61 ExplicitSegment *_program_stack = NULL; 62 Payload *_program_payload = NULL; 63 64 /* IPC gate for communication within the created task, plus allocated 65 capability. */ 66 67 l4_cap_idx_t _internal_pager, _mapped_internal_pager; 68 69 /* Utility methods. */ 70 71 long start_pager(); 72 73 long init_region_mapper(); 74 75 long init_program(file_t *file); 76 77 long init_external_pager(l4_cap_idx_t *pager); 78 79 long configure_task(); 80 81 long allocate_internal_pager(); 82 83 void init_region(struct exec_region *regions, 84 struct ipc_mapped_cap *mapped_caps, 85 struct exec_region &r, unsigned int &index); 86 87 long start_region_mapper(l4_cap_idx_t pager); 88 89 long start_program(l4_cap_idx_t monitor, int argc, const char *argv[], 90 l4_cap_idx_t reader, l4_cap_idx_t writer); 91 92 long _start(int argc, const char *argv[], l4_cap_idx_t reader, 93 l4_cap_idx_t writer, l4_cap_idx_t process); 94 95 public: 96 explicit ProcessCreating(const char *rm_filename, file_t *rm_file); 97 98 virtual long init_process_monitor(l4_cap_idx_t *monitor); 99 100 virtual long start(int argc, const char *argv[], l4_cap_idx_t reader, 101 l4_cap_idx_t writer, l4_cap_idx_t process); 102 }; 103 104 /* vim: tabstop=2 expandtab shiftwidth=2 105 */