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- /* vi: set sw=4 ts=4: */
- /*
- * Architecture specific code used by dl-startup.c
- * Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
- */
- asm(
- " .text\n"
- " .globl _start\n"
- " .type _start,@function\n"
- "_start:\n"
- " .set _start,_dl_start\n"
- " .size _start,.-_start\n"
- " .previous\n"
- );
- /* 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 int *) & ARGS)
- /* Handle relocation of the symbols in the dynamic loader. */
- static inline
- void PERFORM_BOOTSTRAP_RELOC(ELF_RELOC *rpnt, unsigned long *reloc_addr,
- unsigned long symbol_addr, unsigned long load_addr, Elf32_Sym *symtab)
- {
- switch (ELF32_R_TYPE(rpnt->r_info))
- {
- case R_68K_8:
- *(char *) reloc_addr = symbol_addr + rpnt->r_addend;
- break;
- case R_68K_16:
- *(short *) reloc_addr = symbol_addr + rpnt->r_addend;
- break;
- case R_68K_32:
- *reloc_addr = symbol_addr + rpnt->r_addend;
- break;
- case R_68K_PC8:
- *(char *) reloc_addr = (symbol_addr + rpnt->r_addend
- - (unsigned int) reloc_addr);
- break;
- case R_68K_PC16:
- *(short *) reloc_addr = (symbol_addr + rpnt->r_addend
- - (unsigned int) reloc_addr);
- break;
- case R_68K_PC32:
- *reloc_addr = (symbol_addr + rpnt->r_addend
- - (unsigned int) reloc_addr);
- break;
- case R_68K_GLOB_DAT:
- case R_68K_JMP_SLOT:
- *reloc_addr = symbol_addr;
- break;
- case R_68K_RELATIVE:
- *reloc_addr = ((unsigned int) load_addr +
- (rpnt->r_addend ? : *reloc_addr));
- break;
- default:
- _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() \
- __asm__ volatile ( \
- "unlk %%a6\n\t" \
- "jmp %0@" \
- : : "a" (_dl_elf_main));
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