/* Any assembly 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. */ __asm__( " .text\n" " .globl _start\n" " .type _start,@function\n" "_start:\n" " mov r15, r4\n" " mov.l .L_dl_start, r0\n" " bsrf r0\n" " add #4, r4\n" ".jmp_loc:\n" " mov r0, r8 ! Save the user entry point address in r8\n" " mov.l .L_got, r12 ! Load the GOT on r12\n" " mova .L_got, r0\n" " add r0, r12\n" " mov.l .L_dl_fini, r0\n" " mov.l @(r0,r12), r4 ! Pass the finalizer in r4\n" " jmp @r8\n" " nop\n" ".L_dl_start:\n" " .long _dl_start-.jmp_loc\n" ".L_dl_fini:\n" " .long _dl_fini@GOT\n" ".L_got:\n" " .long _GLOBAL_OFFSET_TABLE_\n" " .size _start,.-_start\n" " .previous\n" ); /* * Get a pointer to the argv array. On many platforms this can be just * the address of 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) /* We can't call functions earlier in the dl startup process */ #define NO_FUNCS_BEFORE_BOOTSTRAP /* * 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) \ switch(ELF32_R_TYPE((RELP)->r_info)){ \ case R_SH_REL32: \ *(REL) = (SYMBOL) + (RELP)->r_addend \ - (unsigned long)(REL); \ break; \ case R_SH_DIR32: \ case R_SH_GLOB_DAT: \ case R_SH_JMP_SLOT: \ *(REL) = (SYMBOL) + (RELP)->r_addend; \ break; \ case R_SH_RELATIVE: \ *(REL) = (LOAD) + (RELP)->r_addend; \ break; \ case R_SH_NONE: \ break; \ default: \ _dl_exit(1); \ }