/* 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. See arm/boot1_arch.h for an example of what * can be done. */ asm( " .text\n" " .global _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. We assume that argc is stored * at the word just below the argvp that we return here. */ #define GET_ARGV(ARGVP, ARGS) __asm__("\tadd %%fp,68,%0\n" : "=r" (ARGVP)); /* * Here is a macro to perform a relocation. This is only used when * bootstrapping the dynamic loader. */ #define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB) \ switch(ELF32_R_TYPE((RELP)->r_info)) { \ case R_SPARC_32: \ *REL = SYMBOL + (RELP)->r_addend; \ break; \ case R_SPARC_GLOB_DAT: \ *REL = SYMBOL + (RELP)->r_addend; \ break; \ case R_SPARC_JMP_SLOT: \ REL[1] = 0x03000000 | ((SYMBOL >> 10) & 0x3fffff); \ REL[2] = 0x81c06000 | (SYMBOL & 0x3ff); \ break; \ case R_SPARC_NONE: \ break; \ case R_SPARC_WDISP30: \ break; \ case R_SPARC_RELATIVE: \ *REL += (unsigned int) LOAD + (RELP)->r_addend; \ break; \ default: \ _dl_exit(1); \ } /* * Transfer control to the user's application, once the dynamic loader * is done. The crt calls atexit with $g1 if not null, so we need to * ensure that it contains NULL. */ #define START() \ __asm__ volatile ( \ "add %%g0,%%g0,%%g1\n\t" \ "jmpl %0, %%o7\n\t" \ "restore %%g0,%%g0,%%g0\n\t" \ : /*"=r" (status) */ : \ "r" (_dl_elf_main): "g1", "o0", "o1")