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- /* Any assmbly language/system dependent hacks needed to setup boot1.c so it
- * will work as expected and cope with whatever platform specific wierdness is
- * needed for this architecture. */
- /* Overrive the default _dl_boot function, and replace it with a bit of asm.
- * Then call the real _dl_boot function, which is now named _dl_boot2. */
- asm(
- " .text\n"
- " .globl _dl_boot\n"
- " .type _dl_boot,@function\n"
- "_dl_boot:\n"
- " mr 3,1\n" /* Pass SP to _dl_boot2 in r3 */
- " addi 1,1,-16\n" /* Make room on stack for _dl_boot2 to store LR */
- " li 4,0\n"
- " stw 4,0(1)\n" /* Clear Stack frame */
- " bl _dl_boot2@local\n" /* Perform relocation */
- " addi 1,1,16\n" /* Restore SP */
- " mtctr 3\n" /* Load applications entry point */
- " bctr\n" /* Jump to entry point */
- " .size _dl_boot,.-_dl_boot\n"
- " .previous\n"
- );
- #define DL_BOOT(X) static void* __attribute_used__ _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)+1)
- /*
- * 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,SYMTAB) \
- {int type=ELF32_R_TYPE((RELP)->r_info); \
- Elf32_Addr finaladdr=(SYMBOL)+(RELP)->r_addend;\
- if (type==R_PPC_RELATIVE) { \
- *REL=(Elf32_Word)(LOAD)+(RELP)->r_addend;\
- } else if (type==R_PPC_ADDR32 || type==R_PPC_GLOB_DAT) {\
- *REL=finaladdr; \
- } else if (type==R_PPC_JMP_SLOT) { \
- Elf32_Sword delta=finaladdr-(Elf32_Word)(REL);\
- *REL=OPCODE_B(delta); \
- PPC_DCBST(REL); PPC_SYNC; PPC_ICBI(REL);\
- } else { \
- _dl_exit(100+ELF32_R_TYPE((RELP)->r_info));\
- } \
- }
- /*
- * 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
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