/* Startup code compliant to the ELF CRIS ABI */ /* The first piece of initialized data. */ int __data_start = 0; static void start1 (int argc, char **argv) __attribute__ ((used, noreturn)); /* * It is important that this be the first function. * This file is the first thing in the text section. * This is implemented completely in assembler to avoid that the * compiler pushes stuff on the stack (e.g. the frame pointer when * debuging). */ /* * On the stack we have argc. We can calculate argv/envp * from that and the succeeding stack location, but fix so * we get the right calling convention (regs in r10/r11). * * Please view linux/fs/binfmt_elf.c for a complete * understanding of this. */ __asm__ ( \ ".text\n\t" \ ".global _start\n\t" \ "_start:\n\t" \ "pop $r10\n\t" \ "move.d $sp, $r11\n\t" \ "jump start1\n\t"); #include <features.h> extern void __uClibc_main(int argc, char **argv, char **envp) __attribute__ ((__noreturn__)); extern void __uClibc_start_main(int argc, char **argv, char **envp, void (*app_init)(void), void (*app_fini)(void)) __attribute__ ((__noreturn__)); extern void weak_function _init(void); extern void weak_function _fini(void); /* Stick in a dummy reference to main(), so that if an application * is linking when the main() function is in a static library (.a) * we can be sure that main() actually gets linked in */ extern void main(int argc,void *argv,void *envp); void (*__mainp)(int argc,void *argv,void *envp) = main; static void start1 (int argc, char **argv) { char** environ; /* The environment starts just after ARGV. */ environ = &argv[argc + 1]; /* * If the first thing after ARGV is the arguments * themselves, there is no environment. */ if ((char *) environ == *argv) /* * The environment is empty. Make environ * point at ARGV[ARGC], which is NULL. */ --environ; #if defined L_crt0 || ! defined __UCLIBC_CTOR_DTOR__ /* Leave control to the libc */ __uClibc_main(argc, argv, environ); #else __uClibc_start_main(argc, argv, environ, _init, _fini); #endif }