/* * Various assmbly language/system dependent hacks that are required * so that we can minimize the amount of platform specific code. */ /* * Define this if the system uses RELOCA. */ #define ELF_USES_RELOCA /* * Get a pointer to the argv array. On many platforms this can be just * the address if the first argument, on other platforms we need to * do something a little more subtle here. */ #define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long*) ARGS) /* * Initialization sequence for a GOT. */ #define INIT_GOT(GOT_BASE,MODULE) \ { \ GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \ GOT_BASE[1] = (unsigned long) (MODULE); \ } /* * Here is a macro to perform a relocation. This is only used when * bootstrapping the dynamic loader. RELP is the relocation that we * are performing, REL is the pointer to the address we are relocating. * SYMBOL is the symbol involved in the relocation, and LOAD is the * load address. */ #define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \ switch(ELF32_R_TYPE((RELP)->r_info)){ \ case R_SH_REL32: \ *(REL) += (RELP)->r_addend - (LOAD); \ break; \ case R_SH_DIR32: \ *(REL) += (SYMBOL) + (RELP)->r_addend; \ break; \ case R_SH_RELATIVE: \ *(REL) += (LOAD); \ break; \ case R_SH_NONE: \ break; \ default: \ SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc type "); \ SEND_NUMBER_STDERR(ELF32_R_TYPE((RELP)->r_info), 1); \ SEND_STDERR("REL, SYMBOL, LOAD: "); \ SEND_ADDRESS_STDERR(REL, 0); \ SEND_STDERR(", "); \ SEND_ADDRESS_STDERR(SYMBOL, 0); \ SEND_STDERR(", "); \ SEND_ADDRESS_STDERR(LOAD, 1); \ _dl_exit(1); \ } /* * Transfer control to the user's application, once the dynamic loader * is done. This routine has to exit the current function, then * call the _dl_elf_main function. */ #define START() return _dl_elf_main; /* Here we define the magic numbers that this dynamic loader should accept */ #define MAGIC1 EM_SH #undef MAGIC2 /* Used for error messages */ #define ELF_TARGET "sh" struct elf_resolve; extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry); #define do_rem(result, n, base) result = (n % base) /* 4096 bytes alignment */ #define PAGE_ALIGN 0xfffff000 #define ADDR_ALIGN 0xfff #define OFFS_ALIGN 0x7ffff000