forked from KolibriOS/kolibrios
145 lines
2.8 KiB
C
145 lines
2.8 KiB
C
|
|
#include <_ansi.h>
|
|
#include <reent.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <setjmp.h>
|
|
#include <sys/kos_io.h>
|
|
|
|
struct app_hdr
|
|
{
|
|
char banner[8];
|
|
int version;
|
|
int start;
|
|
int iend;
|
|
int memsize;
|
|
int stacktop;
|
|
char *cmdline;
|
|
char *path;
|
|
};
|
|
|
|
int _argc;
|
|
char **_argv;
|
|
|
|
|
|
void __fastcall init_loader(void *libc_image);
|
|
void* __fastcall create_image(void *raw);
|
|
int __fastcall link_image(void *img_base);
|
|
void* get_entry_point(void *raw);
|
|
int (*entry)(int, char **, char **);
|
|
|
|
|
|
void init_reent();
|
|
|
|
jmp_buf loader_env;
|
|
|
|
void __attribute__((noreturn))
|
|
__thread_startup (int (*entry)(void*), void *param,
|
|
void *stacklow, void *stackhigh)
|
|
{
|
|
int retval;
|
|
|
|
asm volatile ( "xchgw %bx, %bx");
|
|
|
|
__asm__ __volatile__( // save stack limits
|
|
"movl %0, %%fs:4 \n\t" // use TLS
|
|
"movl %1, %%fs:8 \n\t"
|
|
::"r"(stacklow), "r"(stackhigh));
|
|
|
|
init_reent(); // initialize thread reentry structure
|
|
|
|
retval = entry(param); // call user thread function
|
|
|
|
_exit(retval);
|
|
};
|
|
|
|
char * __libc_getenv(const char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
char __appcwd[1024];
|
|
int __appcwdlen;
|
|
char* __appenv;
|
|
int __appenv_size;
|
|
|
|
void __attribute__((noreturn))
|
|
crt_startup (void *libc_base, void *obj_base, uint32_t *params)
|
|
{
|
|
struct app_hdr *header;
|
|
char *arg[2];
|
|
|
|
int len;
|
|
char *p;
|
|
|
|
void *my_app;
|
|
int retval = 0;
|
|
|
|
// user_free(obj_base);
|
|
|
|
init_reent();
|
|
__initPOSIXHandles();
|
|
__appenv = load_file("/sys/system.env", &__appenv_size);
|
|
|
|
init_loader(libc_base);
|
|
|
|
my_app = create_image((void*)(params[0]));
|
|
|
|
if( link_image(my_app)==0)
|
|
goto done;
|
|
|
|
header = (struct app_hdr*)NULL;
|
|
|
|
__appcwdlen = strrchr(header->path, '/') - header->path;
|
|
__appcwdlen = __appcwdlen > 1022 ? 1022 : __appcwdlen;
|
|
memcpy(__appcwd, header->path, __appcwdlen);
|
|
set_cwd(__appcwd);
|
|
|
|
#ifdef BRAVE_NEW_WORLD
|
|
len = strlen(header->path);
|
|
p = alloca(len+1);
|
|
memcpy(p, header->path, len);
|
|
p[len]=0;
|
|
|
|
arg[0] = p;
|
|
#else
|
|
arg[0] = header->path;
|
|
#endif
|
|
|
|
_argc = 1;
|
|
|
|
if( header->cmdline != 0)
|
|
{
|
|
#ifdef BRAVE_NEW_WORLD
|
|
len = strlen(header->cmdline);
|
|
if(len)
|
|
{
|
|
p = alloca(len+1);
|
|
memcpy(p, header->cmdline, len);
|
|
p[len]=0;
|
|
_argc = 2;
|
|
arg[1] = p;
|
|
};
|
|
#else
|
|
_argc = 2;
|
|
arg[1] = header->cmdline;
|
|
#endif
|
|
};
|
|
|
|
_argv = arg;
|
|
|
|
entry = get_entry_point(my_app);
|
|
|
|
// __asm__ __volatile__("int3");
|
|
|
|
retval = entry(_argc, _argv, NULL);
|
|
|
|
done:
|
|
exit (retval);
|
|
}
|
|
|
|
|