From 4302cf39db615ece37bb00c6d5245200165b838e Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Fri, 28 Jun 2024 23:25:32 -0400 Subject: kernel: elf: Add ELF64 loader Signed-off-by: Ian Moffett --- sys/include/sys/exec.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 sys/include/sys/exec.h (limited to 'sys/include') diff --git a/sys/include/sys/exec.h b/sys/include/sys/exec.h new file mode 100644 index 0000000..1291479 --- /dev/null +++ b/sys/include/sys/exec.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _SYS_EXEC_H_ +#define _SYS_EXEC_H_ + +#include + +#if defined(_KERNEL) + +#define MAX_PHDRS 32 + +struct exec_range { + uintptr_t start; + uintptr_t end; +}; + +struct auxval { + uint64_t at_entry; + uint64_t at_phdr; + uint64_t at_phent; + uint64_t at_phnum; +}; + +/* A loaded program */ +struct exec_prog { + struct exec_range loadmap[MAX_PHDRS]; + struct auxval auxval; + char **argp; + char **envp; +}; + +int elf64_load(const char *pathname, struct proc *td, struct exec_prog *prog); +void elf_unload(struct proc *td, struct exec_prog *prog); + +#endif /* _KERNEL */ +#endif /* !_SYS_EXEC_H_ */ -- cgit v1.2.3