Transition to hekate bdk layout

2020-06-26 14:17:06 -06:00 · 2020-06-26 14:17:06 -06:00 · 4ffd4ce7f0
commit 4ffd4ce7f0
parent 4425e81085
317 changed files with 60891 additions and 1003 deletions
--- a/bdk/ianos/elfload/elfload.h
+++ b/bdk/ianos/elfload/elfload.h
@ -0,0 +1,127 @@
+/*
+ * Copyright © 2018, M4xw
+ * Copyright © 2014, Owen Shepherd
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef ELFLOAD_H
+#define ELFLOAD_H
+#include <stddef.h>
+
+#include "elfarch.h"
+#include "elf.h"
+
+#include <utils/types.h>
+
+#ifdef DEBUG
+#include <gfx_utils.h>
+#define EL_DEBUG(format, ...) \
+	gfx_printf(format __VA_OPT__(, ) __VA_ARGS__)
+#else
+#define EL_DEBUG(...) \
+	do                \
+	{                 \
+	} while (0)
+#endif
+
+typedef enum
+{
+	EL_OK = 0,
+
+	EL_EIO,
+	EL_ENOMEM,
+
+	EL_NOTELF,
+	EL_WRONGBITS,
+	EL_WRONGENDIAN,
+	EL_WRONGARCH,
+	EL_WRONGOS,
+	EL_NOTEXEC,
+	EL_NODYN,
+	EL_BADREL,
+
+} el_status;
+
+typedef struct el_ctx
+{
+	bool (*pread)(struct el_ctx *ctx, void *dest, size_t nb, size_t offset);
+
+	/* base_load_* -> address we are actually going to load at
+	 */
+	Elf_Addr
+		base_load_paddr,
+		base_load_vaddr;
+
+	/* size in memory of binary */
+	Elf_Addr memsz;
+
+	/* required alignment */
+	Elf_Addr align;
+
+	/* ELF header */
+	Elf_Ehdr ehdr;
+
+	// Section Header Str Table
+	Elf_Shdr shstr;
+	Elf_Shdr symtab;
+
+	/* Offset of dynamic table (0 if not ET_DYN) */
+	Elf_Off dynoff;
+	/* Size of dynamic table (0 if not ET_DYN) */
+	Elf_Addr dynsize;
+} el_ctx;
+
+el_status el_pread(el_ctx *ctx, void *def, size_t nb, size_t offset);
+
+el_status el_init(el_ctx *ctx);
+typedef void *(*el_alloc_cb)(
+	el_ctx *ctx,
+	Elf_Addr phys,
+	Elf_Addr virt,
+	Elf_Addr size);
+
+el_status el_load(el_ctx *ctx, el_alloc_cb alloccb);
+
+/* find the next phdr of type \p type, starting at \p *i.
+ * On success, returns EL_OK with *i set to the phdr number, and the phdr loaded
+ * in *phdr.
+ *
+ * If the end of the phdrs table was reached, *i is set to -1 and the contents
+ * of *phdr are undefined
+ */
+el_status el_findphdr(el_ctx *ctx, Elf_Phdr *phdr, uint32_t type, unsigned *i);
+
+/* Relocate the loaded executable */
+el_status el_relocate(el_ctx *ctx);
+
+/* find a dynamic table entry
+ * returns the entry on success, dyn->d_tag = DT_NULL on failure
+ */
+el_status el_finddyn(el_ctx *ctx, Elf_Dyn *dyn, uint32_t type);
+
+typedef struct
+{
+	Elf_Off tableoff;
+	Elf_Addr tablesize;
+	Elf_Addr entrysize;
+} el_relocinfo;
+
+/* find all information regarding relocations of a specific type.
+ *
+ * pass DT_REL or DT_RELA for type
+ * sets ri->entrysize = 0 if not found
+ */
+el_status el_findrelocs(el_ctx *ctx, el_relocinfo *ri, uint32_t type);
+
+#endif