diff options
Diffstat (limited to 'src/kernel/include')
| -rw-r--r-- | src/kernel/include/elf.h | 59 | ||||
| -rw-r--r-- | src/kernel/include/process.h | 6 |
2 files changed, 64 insertions, 1 deletions
diff --git a/src/kernel/include/elf.h b/src/kernel/include/elf.h new file mode 100644 index 0000000..6e0c7cb --- /dev/null +++ b/src/kernel/include/elf.h @@ -0,0 +1,59 @@ +#pragma once + +#include <stddef.h> +#include <stdint.h> + +#include <vfs.h> +#include <process.h> + +/* elf_phdr_t :: p_type : program header entries types */ +#define PT_NULL 0 +#define PT_LOAD 1 +#define PT_DYNAMIC 2 +#define PT_INTERP 3 +#define PT_NOTE 4 +#define PT_SHLIB 5 +#define PT_PHDR 6 +#define PT_LOPROC 0x70000000 +#define PT_HIPROC 0x7fffffff + +/* elf_phdr_t :: p_flags : program header entries flags */ +#define PF_X (1 << 0) +#define PF_W (1 << 1) +#define PF_R (1 << 2) + +typedef struct { + uint8_t e_ident[16]; /* ELF identification */ + uint16_t e_type; /* 2 (exec file) */ + uint16_t e_machine; /* 3 (intel architecture) */ + uint32_t e_version; /* 1 */ + uint32_t e_entry; /* starting point */ + uint32_t e_phoff; /* program header table offset */ + uint32_t e_shoff; /* section header table offset */ + uint32_t e_flags; /* various flags */ + uint16_t e_ehsize; /* ELF header (this) size */ + + uint16_t e_phentsize; /* program header table entry size */ + uint16_t e_phnum; /* number of entries */ + + uint16_t e_shentsize; /* section header table entry size */ + uint16_t e_shnum; /* number of entries */ + + uint16_t e_shstrndx; /* index of the section name string table */ +} elf_ehdr_t; + +typedef struct { + uint32_t p_type; /* type of segment */ + uint32_t p_offset; + uint32_t p_vaddr; + uint32_t p_paddr; + uint32_t p_filesz; + uint32_t p_memsz; + uint32_t p_flags; + uint32_t p_align; +} elf_phdr_t; + +bool is_elf(fs_handle_t *f); +proc_entry_t elf_load(fs_handle_t *f, process_t *process); //Load an ELF to a process, return entry point + +/* vim: set ts=4 sw=4 tw=0 noet :*/ diff --git a/src/kernel/include/process.h b/src/kernel/include/process.h index d67ede6..661aaa6 100644 --- a/src/kernel/include/process.h +++ b/src/kernel/include/process.h @@ -27,12 +27,16 @@ struct process; typedef struct process process_t; +typedef void* proc_entry_t; + process_t *current_process(); process_t *new_process(process_t *parent); // void delete_process(process_t *p); // TODO define semantics for freeing stuff -bool start_process(process_t *p, void* entry); // maps a region for user stack +pagedir_t *proc_pagedir(process_t *p); + +bool start_process(process_t *p, proc_entry_t entry); // maps a region for user stack bool proc_add_fs(process_t *p, fs_t *fs, const char* name); fs_t *proc_find_fs(process_t *p, const char* name); |