diff options
Diffstat (limited to 'ldso/ldso/cris/dl-startup.h')
| -rw-r--r-- | ldso/ldso/cris/dl-startup.h | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/ldso/ldso/cris/dl-startup.h b/ldso/ldso/cris/dl-startup.h index bf7714539..e910c235c 100644 --- a/ldso/ldso/cris/dl-startup.h +++ b/ldso/ldso/cris/dl-startup.h @@ -1,7 +1,9 @@ /* - * This code fix the stack pointer so that the dynamic linker - * can find argc, argv and auxvt (Auxillary Vector Table). + * Architecture specific code used by dl-startup.c */ + +/* This code fixes the stack pointer so that the dynamic linker + * can find argc, argv and auxvt (Auxillary Vector Table). */ asm("" \ " .text\n" \ " .globl _dl_boot\n" \ @@ -14,3 +16,48 @@ asm("" \ ); #define DL_BOOT(X) static void __attribute__ ((unused)) _dl_boot2 (X) + + +/* 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) + +/* 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_CRIS_GLOB_DAT: + case R_CRIS_JUMP_SLOT: + case R_CRIS_32: + *reloc_addr = symbol_addr; + break; + case R_CRIS_16_PCREL: + *(short *) *reloc_addr = symbol_addr + rpnt->r_addend - *reloc_addr - 2; + break; + case R_CRIS_32_PCREL: + *reloc_addr = symbol_addr + rpnt->r_addend - *reloc_addr - 4; + break; + case R_CRIS_NONE: + break; + case R_CRIS_RELATIVE: + *reloc_addr = load_addr + rpnt->r_addend; + break; + default: + _dl_exit(1); + break; + } +} + +/* 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 ("moveq 0,$r8\n\t" \ + "move $r8,$srp\n\t" \ + "move.d %1,$sp\n\t" \ + "jump %0\n\t" \ + : : "r" (_dl_elf_main), "r" (args)) + + |