The runtime loader now creates a debug area through which other teams can

access a team's internal loader data. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13697 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-07-16 21:07:17 +00:00
parent d3bdf71ea6
commit 28e0d4cd19
3 changed files with 105 additions and 60 deletions
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2003-2005, Axel Dörfler, [email protected].
+ * Distributed under the terms of the MIT License.
+ *
+ * Copyright 2002, Manuel J. Petit. All rights reserved.
+ * Copyright 2001, Travis Geiselbrecht. All rights reserved.
+ * Distributed under the terms of the NewOS License.
+ */
+
+#ifndef _RUNTIME_LOADER_H
+#define _RUNTIME_LOADER_H
+
+#include <image.h>
+#include <OS.h>
+
+#include <elf32.h>
+
+typedef struct elf_region_t {
+	area_id		id;
+	addr_t		start;
+	addr_t		size;
+	addr_t		vmstart;
+	addr_t		vmsize;
+	addr_t		fdstart;
+	addr_t		fdsize;
+	long		delta;
+	uint32		flags;
+} elf_region_t;
+
+typedef struct image_t {
+	// image identification
+	char				path[B_OS_NAME_LENGTH];
+	char				name[B_OS_NAME_LENGTH];
+	image_id			id;
+	image_type			type;
+
+	struct image_t		*next;
+	struct image_t		*prev;
+	int32				ref_count;
+	uint32				flags;
+
+	addr_t 				entry_point;
+	addr_t				init_routine;
+	addr_t				term_routine;
+	addr_t 				dynamic_ptr; 	// pointer to the dynamic section
+
+	// pointer to symbol participation data structures
+	uint32				*symhash;
+	struct Elf32_Sym	*syms;
+	char				*strtab;
+	struct Elf32_Rel	*rel;
+	int					rel_len;
+	struct Elf32_Rela	*rela;
+	int					rela_len;
+	struct Elf32_Rel	*pltrel;
+	int					pltrel_len;
+
+	uint32				num_needed;
+	struct image_t		**needed;
+
+	// describes the text and data regions
+	uint32				num_regions;
+	elf_region_t		regions[1];
+} image_t;
+
+typedef struct image_queue_t {
+	image_t *head;
+	image_t *tail;
+} image_queue_t;
+
+#define STRING(image, offset) ((char *)(&(image)->strtab[(offset)]))
+#define SYMNAME(image, sym) STRING(image, (sym)->st_name)
+#define SYMBOL(image, num) ((struct Elf32_Sym *)&(image)->syms[num])
+#define HASHTABSIZE(image) ((image)->symhash[0])
+#define HASHBUCKETS(image) ((unsigned int *)&(image)->symhash[2])
+#define HASHCHAINS(image) ((unsigned int *)&(image)->symhash[2+HASHTABSIZE(image)])
+
+
+// The name of the area the runtime loader creates for debugging purposes.
+#define RUNTIME_LOADER_DEBUG_AREA_NAME	"_rld_debug_"
+
+// The contents of the runtime loader debug area.
+typedef struct runtime_loader_debug_area {
+	image_queue_t	*loaded_images;
+} runtime_loader_debug_area;
+
+#endif	// _RUNTIME_LOADER_H