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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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