88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
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/*
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* Copyright 2003-2005, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2002, Manuel J. Petit. All rights reserved.
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* Copyright 2001, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _RUNTIME_LOADER_H
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#define _RUNTIME_LOADER_H
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#include <image.h>
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#include <OS.h>
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#include <elf32.h>
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typedef struct elf_region_t {
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area_id id;
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addr_t start;
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addr_t size;
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addr_t vmstart;
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addr_t vmsize;
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addr_t fdstart;
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addr_t fdsize;
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long delta;
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uint32 flags;
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} elf_region_t;
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typedef struct image_t {
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// image identification
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char path[B_OS_NAME_LENGTH];
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char name[B_OS_NAME_LENGTH];
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image_id id;
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image_type type;
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struct image_t *next;
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struct image_t *prev;
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int32 ref_count;
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uint32 flags;
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addr_t entry_point;
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addr_t init_routine;
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addr_t term_routine;
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addr_t dynamic_ptr; // pointer to the dynamic section
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// pointer to symbol participation data structures
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uint32 *symhash;
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struct Elf32_Sym *syms;
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char *strtab;
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struct Elf32_Rel *rel;
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int rel_len;
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struct Elf32_Rela *rela;
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int rela_len;
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struct Elf32_Rel *pltrel;
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int pltrel_len;
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uint32 num_needed;
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struct image_t **needed;
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// describes the text and data regions
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uint32 num_regions;
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elf_region_t regions[1];
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} image_t;
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typedef struct image_queue_t {
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image_t *head;
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image_t *tail;
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} image_queue_t;
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#define STRING(image, offset) ((char *)(&(image)->strtab[(offset)]))
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#define SYMNAME(image, sym) STRING(image, (sym)->st_name)
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#define SYMBOL(image, num) ((struct Elf32_Sym *)&(image)->syms[num])
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#define HASHTABSIZE(image) ((image)->symhash[0])
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#define HASHBUCKETS(image) ((unsigned int *)&(image)->symhash[2])
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#define HASHCHAINS(image) ((unsigned int *)&(image)->symhash[2+HASHTABSIZE(image)])
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// The name of the area the runtime loader creates for debugging purposes.
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#define RUNTIME_LOADER_DEBUG_AREA_NAME "_rld_debug_"
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// The contents of the runtime loader debug area.
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typedef struct runtime_loader_debug_area {
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image_queue_t *loaded_images;
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} runtime_loader_debug_area;
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#endif // _RUNTIME_LOADER_H
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