| paul@477 | 1 | /* |
| paul@477 | 2 | * Support for executing code in new tasks and threads. |
| paul@477 | 3 | * |
| paul@615 | 4 | * Copyright (C) 2022, 2023, 2024 Paul Boddie <paul@boddie.org.uk> |
| paul@477 | 5 | * |
| paul@477 | 6 | * This program is free software; you can redistribute it and/or |
| paul@477 | 7 | * modify it under the terms of the GNU General Public License as |
| paul@477 | 8 | * published by the Free Software Foundation; either version 2 of |
| paul@477 | 9 | * the License, or (at your option) any later version. |
| paul@477 | 10 | * |
| paul@477 | 11 | * This program is distributed in the hope that it will be useful, |
| paul@477 | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| paul@477 | 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| paul@477 | 14 | * GNU General Public License for more details. |
| paul@477 | 15 | * |
| paul@477 | 16 | * You should have received a copy of the GNU General Public License |
| paul@477 | 17 | * along with this program; if not, write to the Free Software |
| paul@477 | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| paul@477 | 19 | * Boston, MA 02110-1301, USA |
| paul@477 | 20 | */ |
| paul@477 | 21 | |
| paul@477 | 22 | #pragma once |
| paul@477 | 23 | |
| paul@524 | 24 | #include <mutex> |
| paul@524 | 25 | |
| paul@477 | 26 | #include <exec/elf.h> |
| paul@477 | 27 | #include <exec/external_pager.h> |
| paul@477 | 28 | #include <exec/memory.h> |
| paul@477 | 29 | #include <exec/process.h> |
| paul@543 | 30 | #include <exec/process_monitor.h> |
| paul@477 | 31 | #include <ipc/map.h> |
| paul@477 | 32 | |
| paul@477 | 33 | |
| paul@477 | 34 | |
| paul@483 | 35 | /* Process creator functionality. */ |
| paul@477 | 36 | |
| paul@483 | 37 | class ProcessCreating |
| paul@477 | 38 | { |
| paul@477 | 39 | protected: |
| paul@524 | 40 | std::mutex _lock; |
| paul@524 | 41 | |
| paul@527 | 42 | /* Region mapper program file. */ |
| paul@524 | 43 | |
| paul@477 | 44 | const char *_rm_filename; |
| paul@527 | 45 | file_t *_rm_file; |
| paul@477 | 46 | |
| paul@543 | 47 | /* External pager and process monitor. */ |
| paul@477 | 48 | |
| paul@487 | 49 | ExternalPager *_exec_pager = NULL; |
| paul@543 | 50 | ProcessMonitor *_monitor = NULL; |
| paul@477 | 51 | |
| paul@487 | 52 | /* Process construction. */ |
| paul@487 | 53 | |
| paul@477 | 54 | Process _process; |
| paul@477 | 55 | |
| paul@477 | 56 | /* Stack and payload descriptions. */ |
| paul@477 | 57 | |
| paul@495 | 58 | ExplicitSegment *_rm_stack = NULL; |
| paul@487 | 59 | Payload *_rm_payload = NULL; |
| paul@477 | 60 | |
| paul@495 | 61 | ExplicitSegment *_program_stack = NULL; |
| paul@487 | 62 | Payload *_program_payload = NULL; |
| paul@477 | 63 | |
| paul@477 | 64 | /* IPC gate for communication within the created task, plus allocated |
| paul@477 | 65 | capability. */ |
| paul@477 | 66 | |
| paul@543 | 67 | l4_cap_idx_t _internal_pager, _mapped_internal_pager; |
| paul@477 | 68 | |
| paul@477 | 69 | /* Utility methods. */ |
| paul@477 | 70 | |
| paul@477 | 71 | long start_pager(); |
| paul@477 | 72 | |
| paul@477 | 73 | long init_region_mapper(); |
| paul@477 | 74 | |
| paul@477 | 75 | long init_program(file_t *file); |
| paul@477 | 76 | |
| paul@489 | 77 | long init_external_pager(l4_cap_idx_t *pager); |
| paul@477 | 78 | |
| paul@543 | 79 | long configure_task(); |
| paul@543 | 80 | |
| paul@543 | 81 | long allocate_internal_pager(); |
| paul@477 | 82 | |
| paul@477 | 83 | void init_region(struct exec_region *regions, |
| paul@477 | 84 | struct ipc_mapped_cap *mapped_caps, |
| paul@477 | 85 | struct exec_region &r, unsigned int &index); |
| paul@477 | 86 | |
| paul@489 | 87 | long start_region_mapper(l4_cap_idx_t pager); |
| paul@477 | 88 | |
| paul@584 | 89 | long start_program(l4_cap_idx_t monitor, int argc, const char *argv[], |
| paul@615 | 90 | l4_cap_idx_t reader, l4_cap_idx_t writer); |
| paul@477 | 91 | |
| paul@615 | 92 | long _start(int argc, const char *argv[], l4_cap_idx_t reader, |
| paul@615 | 93 | l4_cap_idx_t writer, l4_cap_idx_t process); |
| paul@559 | 94 | |
| paul@477 | 95 | public: |
| paul@527 | 96 | explicit ProcessCreating(const char *rm_filename, file_t *rm_file); |
| paul@477 | 97 | |
| paul@559 | 98 | virtual long init_process_monitor(l4_cap_idx_t *monitor); |
| paul@559 | 99 | |
| paul@615 | 100 | virtual long start(int argc, const char *argv[], l4_cap_idx_t reader, |
| paul@615 | 101 | l4_cap_idx_t writer, l4_cap_idx_t process); |
| paul@477 | 102 | }; |
| paul@477 | 103 | |
| paul@477 | 104 | /* vim: tabstop=2 expandtab shiftwidth=2 |
| paul@477 | 105 | */ |
