fa587060f1
Pull out the old linked list of args structures in favor of doing things the SysV ABI-specified way.
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
#pragma once
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/// \file init.h
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/// Process initialization utility functions
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#include <stddef.h>
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#include <stdint.h>
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#include <j6/types.h>
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#include <util/api.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum j6_aux_type {
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// The SysV ABI-specified aux vector types
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j6_aux_null, // AT_NULL
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j6_aux_ignore, // AT_IGNORE
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j6_aux_execfd, // AD_EXECFD - File descriptor of the exe to load
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j6_aux_phdr, // AD_PHDR - Program headers pointer for the exe to load
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j6_aux_phent, // AD_PHENT - Size of a program header entry
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j6_aux_phnum, // AD_PHNUM - Number of program header entries
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j6_aux_pagesz, // AD_PAGESZ - System page size
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j6_aux_base, // AD_BASE - Base address of dynamic loader
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j6_aux_flags, // AD_FLAGS - Flags
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j6_aux_entry, // AD_ENTRY - Entrypoint for the exe to load
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j6_aux_notelf, // AD_NOTELF - If non-zero, this program is not ELF
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j6_aux_uid, // AD_UID - User ID
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j6_aux_euid, // AD_EUID - Effective User ID
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j6_aux_gid, // AD_GID - Group ID
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j6_aux_egid, // AD_EGID - Effective Group ID
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j6_aux_start = 0xf000,
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j6_aux_handles, // Pointer to a j6_arg_handles structure
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j6_aux_device, // Pointer to a j6_arg_driver structure
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j6_aux_loader, // Pointer to a j6_arg_loader structure
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};
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struct j6_aux
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{
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uint64_t type;
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union {
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uint64_t value;
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void *pointer;
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void (*func)();
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};
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};
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struct j6_arg_loader
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{
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uintptr_t loader_base;
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uintptr_t image_base;
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uintptr_t *got;
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uintptr_t entrypoint;
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uintptr_t start_addr;
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};
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struct j6_arg_driver
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{
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uint64_t device;
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uint32_t size;
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uint8_t data [0];
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};
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struct j6_arg_handle_entry
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{
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uint64_t proto;
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j6_handle_t handle;
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};
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struct j6_arg_handles
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{
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size_t nhandles;
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j6_arg_handle_entry handles[0];
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};
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/// Find the first handle tagged with the given proto in the process init args
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j6_handle_t API j6_find_init_handle(uint64_t proto);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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