| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182 |
- /*
- * 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.
- */
- #undef 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 int*) & ARGS)
- /*
- * Get the address of the Global offset table. This must be absolute, not
- * relative.
- */
- #define GET_GOT(X) __asm__("\tmovl %%ebx,%0\n\t" : "=a" (X))
- /*
- * Initialization sequence for a GOT.
- */
- #define INIT_GOT(GOT_BASE,MODULE) \
- { \
- GOT_BASE[2] = (int) _dl_linux_resolve; \
- GOT_BASE[1] = (int) 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_386_32: \
- *REL += SYMBOL; \
- break; \
- case R_386_PC32: \
- *REL += SYMBOL - (unsigned int) REL; \
- break; \
- case R_386_GLOB_DAT: \
- case R_386_JMP_SLOT: \
- *REL = SYMBOL; \
- break; \
- case R_386_RELATIVE: \
- *REL += (unsigned int) LOAD; \
- break; \
- default: \
- _dl_exit(1); \
- }
- /*
- * Transfer control to the user's application, once the dynamic loader
- * is done.
- */
- #define START() \
- __asm__ volatile ("leave\n\t" \
- "jmp *%%eax\n\t" \
- : "=a" (status) : \
- "d" (_dl_interpreter_exit), "a" (_dl_elf_main))
- /* Here we define the magic numbers that this dynamic loader should accept */
- #define MAGIC1 EM_386
- #define MAGIC2 EM_486
- /* Used for error messages */
- #define ELF_TARGET "386/486"
- extern unsigned int _dl_linux_resolver(int dummy, int i);
- #define do_rem(result, n, base) result = (n % base)
|
