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-rw-r--r--com32/lib/sys/module/elfutils.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/com32/lib/sys/module/elfutils.h b/com32/lib/sys/module/elfutils.h
new file mode 100644
index 00000000..b18968f3
--- /dev/null
+++ b/com32/lib/sys/module/elfutils.h
@@ -0,0 +1,64 @@
+#ifndef ELF_UTILS_H_
+#define ELF_UTILS_H_
+
+#include <elf.h>
+#include <stdlib.h>
+
+/**
+ * elf_get_header - Returns a pointer to the ELF header structure.
+ * @elf_image: pointer to the ELF file image in memory
+ */
+static inline Elf32_Ehdr *elf_get_header(void *elf_image) {
+ return (Elf32_Ehdr*)elf_image;
+}
+
+/**
+ * elf_get_pht - Returns a pointer to the first entry in the PHT.
+ * @elf_image: pointer to the ELF file image in memory
+ */
+static inline Elf32_Phdr *elf_get_pht(void *elf_image) {
+ Elf32_Ehdr *elf_hdr = elf_get_header(elf_image);
+
+ return (Elf32_Phdr*)((Elf32_Off)elf_hdr + elf_hdr->e_phoff);
+}
+
+//
+/**
+ * elf_get_ph - Returns the element with the given index in the PTH
+ * @elf_image: pointer to the ELF file image in memory
+ * @index: the index of the PHT entry to look for
+ */
+static inline Elf32_Phdr *elf_get_ph(void *elf_image, int index) {
+ Elf32_Phdr *elf_pht = elf_get_pht(elf_image);
+ Elf32_Ehdr *elf_hdr = elf_get_header(elf_image);
+
+ return (Elf32_Phdr*)((Elf32_Off)elf_pht + index * elf_hdr->e_phentsize);
+}
+
+/**
+ * elf_hash - Returns the index in a SysV hash table for the symbol name.
+ * @name: the name of the symbol to look for
+ */
+extern unsigned long elf_hash(const unsigned char *name);
+
+/**
+ * elf_gnu_hash - Returns the index in a GNU hash table for the symbol name.
+ * @name: the name of the symbol to look for
+ */
+extern unsigned long elf_gnu_hash(const unsigned char *name);
+
+/**
+ * elf_malloc - Allocates memory to be used by ELF module contents.
+ * @memptr: pointer to a variable to hold the address of the allocated block.
+ * @alignment: alignment constraints of the block
+ * @size: the required size of the block
+ */
+extern int elf_malloc(void **memptr, size_t alignment, size_t size);
+
+/**
+ * elf_free - Releases memory previously allocated by elf_malloc.
+ * @memptr: the address of the allocated block
+ */
+extern void elf_free(void *memptr);
+
+#endif /*ELF_UTILS_H_*/