| paul@477 | 1 | /* |
| paul@477 | 2 | * Support for executing code in new tasks and threads. |
| paul@477 | 3 | * |
| paul@477 | 4 | * Copyright (C) 2022, 2023 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@477 | 30 | #include <ipc/map.h> |
| paul@477 | 31 | |
| paul@477 | 32 | |
| paul@477 | 33 | |
| paul@483 | 34 | /* Process creator functionality. */ |
| paul@477 | 35 | |
| paul@483 | 36 | class ProcessCreating |
| paul@477 | 37 | { |
| paul@477 | 38 | protected: |
| paul@524 | 39 | std::mutex _lock; |
| paul@524 | 40 | |
| paul@524 | 41 | /* Region mapper program filename. */ |
| paul@524 | 42 | |
| paul@477 | 43 | const char *_rm_filename; |
| paul@477 | 44 | |
| paul@477 | 45 | /* External pager configuration. */ |
| paul@477 | 46 | |
| paul@487 | 47 | ExternalPager *_exec_pager = NULL; |
| paul@477 | 48 | |
| paul@487 | 49 | /* Process construction. */ |
| paul@487 | 50 | |
| paul@477 | 51 | Process _process; |
| paul@477 | 52 | |
| paul@477 | 53 | /* Stack and payload descriptions. */ |
| paul@477 | 54 | |
| paul@495 | 55 | ExplicitSegment *_rm_stack = NULL; |
| paul@487 | 56 | Payload *_rm_payload = NULL; |
| paul@477 | 57 | |
| paul@495 | 58 | ExplicitSegment *_program_stack = NULL; |
| paul@487 | 59 | Payload *_program_payload = NULL; |
| paul@477 | 60 | |
| paul@477 | 61 | /* IPC gate for communication within the created task, plus allocated |
| paul@477 | 62 | capability. */ |
| paul@477 | 63 | |
| paul@477 | 64 | l4_cap_idx_t _ipc_gate, _ipc_gate_cap; |
| paul@477 | 65 | |
| paul@477 | 66 | /* Utility methods. */ |
| paul@477 | 67 | |
| paul@477 | 68 | long start_pager(); |
| paul@477 | 69 | |
| paul@477 | 70 | long init_region_mapper(); |
| paul@477 | 71 | |
| paul@477 | 72 | long init_program(file_t *file); |
| paul@477 | 73 | |
| paul@489 | 74 | long init_external_pager(l4_cap_idx_t *pager); |
| paul@477 | 75 | |
| paul@489 | 76 | long configure_task(l4_cap_idx_t pager); |
| paul@477 | 77 | |
| paul@477 | 78 | long create_ipc_gate(); |
| paul@477 | 79 | |
| paul@477 | 80 | void init_region(struct exec_region *regions, |
| paul@477 | 81 | struct ipc_mapped_cap *mapped_caps, |
| paul@477 | 82 | struct exec_region &r, unsigned int &index); |
| paul@477 | 83 | |
| paul@489 | 84 | long start_region_mapper(l4_cap_idx_t pager); |
| paul@477 | 85 | |
| paul@477 | 86 | long start_program(int argc, const char *argv[]); |
| paul@477 | 87 | |
| paul@477 | 88 | public: |
| paul@483 | 89 | explicit ProcessCreating(const char *rm_filename); |
| paul@477 | 90 | |
| paul@505 | 91 | virtual long start(int argc, const char *argv[], l4_cap_idx_t *process); |
| paul@477 | 92 | }; |
| paul@477 | 93 | |
| paul@477 | 94 | /* vim: tabstop=2 expandtab shiftwidth=2 |
| paul@477 | 95 | */ |
