Add titlekey dumping and Minerva

source/libs/elfload/elfreloc_arm.c

@@ -0,0 +1,66 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <m4x@m4xw.net> wrote this file. As long as you retain this notice you can do
+ * whatever you want with this stuff. If we meet some day, and you think this
+ * stuff is worth it, you can buy me a beer in return.                     M4xw
+ * ----------------------------------------------------------------------------
+ */
+
+#include "elfload.h"
+
+#if defined(__arm__)
+
+// Taken from http://infocenter.arm.com/help/topic/com.arm.doc.ihi0044f/IHI0044F_aaelf.pdf
+#define R_ARM_NONE 0
+#define R_ARM_ABS32 2
+#define R_ARM_JUMP_SLOT 22
+#define R_ARM_GLOB_DAT 21
+#define R_ARM_RELATIVE 23
+
+el_status el_applyrel(el_ctx *ctx, Elf_Rel *rel)
+{
+	uint32_t sym = ELF_R_SYM(rel->r_info);                              // Symbol offset
+	uint32_t type = ELF_R_TYPE(rel->r_info);                            // Relocation Type
+	uintptr_t *p = (uintptr_t *)(rel->r_offset + ctx->base_load_paddr); // Target Addr
+
+#if 0 // For later symbol usage
+	Elf32_Sym *elfSym;
+	const char *symbolName;
+
+	// We resolve relocs from the originating elf-image
+	elfSym = (Elf32_Sym *)(ctx->symtab.sh_offset + (char *)buffteg) + sym;
+	int strtab_offset = ctx->shstr.sh_offset;
+	char *strtab = (char *)buffteg + strtab_offset;
+	symbolName = strtab + elfSym->st_name;
+	//EL_DEBUG("Str: %s sz: %x val: %x\n", symbolName, elfSym->st_size, elfSym->st_value);
+#endif
+
+	switch (type)
+	{
+	case R_ARM_NONE:
+		EL_DEBUG("R_ARM_NONE\n");
+		break;
+	case R_ARM_JUMP_SLOT:
+	case R_ARM_ABS32:
+	case R_ARM_GLOB_DAT:
+		// Stubbed for later purpose
+		//*p += elfSym->st_value; // + vaddr from sec
+		//*p |= 0; // 1 if Thumb && STT_FUNC, ignored for now
+		break;
+	case R_ARM_RELATIVE: // Needed for PIE
+		if (sym)
+		{
+			return EL_BADREL;
+		}
+		*p += ctx->base_load_vaddr;
+		break;
+
+	default:
+		return EL_BADREL;
+	}
+
+	return EL_OK;
+}
+
+#endif