static int elf_loadbinary(struct binary_s *binp)
{
struct elf_loadinfo_s loadinfo; /* Contains globals for libelf */
int ret;
bvdbg("Loading file: %s\n", binp->filename);
/* Initialize the xflat library to load the program binary. */
ret = elf_init(binp->filename, &loadinfo);
elf_dumploadinfo(&loadinfo);
if (ret != 0)
{
bdbg("Failed to initialize for load of ELF program: %d\n", ret);
goto errout;
}
/* Load the program binary */
ret = elf_load(&loadinfo);
elf_dumploadinfo(&loadinfo);
if (ret != 0)
{
bdbg("Failed to load ELF program binary: %d\n", ret);
goto errout_with_init;
}
/* Bind the program to the exported symbol table */
ret = elf_bind(&loadinfo, binp->exports, binp->nexports);
if (ret != 0)
{
bdbg("Failed to bind symbols program binary: %d\n", ret);
goto errout_with_load;
}
/* Return the load information */
binp->entrypt = (main_t)(loadinfo.elfalloc + loadinfo.ehdr.e_entry);
binp->alloc[0] = (FAR void *)loadinfo.elfalloc;
binp->stacksize = CONFIG_ELF_STACKSIZE;
#ifdef CONFIG_BINFMT_CONSTRUCTORS
/* Save information about constructors. NOTE: desctructors are not
* yet supported.
*/
binp->alloc[1] = loadinfo.ctoralloc;
binp->ctors = loadinfo.ctors;
binp->nctors = loadinfo.nctors;
binp->alloc[2] = loadinfo.dtoralloc;
binp->dtors = loadinfo.dtors;
binp->ndtors = loadinfo.ndtors;
#endif
elf_dumpbuffer("Entry code", (FAR const uint8_t*)binp->entrypt,
MIN(loadinfo.allocsize - loadinfo.ehdr.e_entry, 512));
elf_uninit(&loadinfo);
return OK;
errout_with_load:
elf_unload(&loadinfo);
errout_with_init:
elf_uninit(&loadinfo);
errout:
return ret;
}
static int elf_loadbinary(FAR struct binary_s *binp)
{
struct elf_loadinfo_s loadinfo; /* Contains globals for libelf */
int ret;
bvdbg("Loading file: %s\n", binp->filename);
/* Initialize the ELF library to load the program binary. */
ret = elf_init(binp->filename, &loadinfo);
elf_dumploadinfo(&loadinfo);
if (ret != 0)
{
bdbg("Failed to initialize for load of ELF program: %d\n", ret);
goto errout;
}
/* Load the program binary */
ret = elf_load(&loadinfo);
elf_dumploadinfo(&loadinfo);
if (ret != 0)
{
bdbg("Failed to load ELF program binary: %d\n", ret);
goto errout_with_init;
}
/* Bind the program to the exported symbol table */
ret = elf_bind(&loadinfo, binp->exports, binp->nexports);
if (ret != 0)
{
bdbg("Failed to bind symbols program binary: %d\n", ret);
goto errout_with_load;
}
/* Return the load information */
binp->entrypt = (main_t)(loadinfo.textalloc + loadinfo.ehdr.e_entry);
binp->stacksize = CONFIG_ELF_STACKSIZE;
/* Add the ELF allocation to the alloc[] only if there is no address
* environment. If there is an address environment, it will automatically
* be freed when the function exits
*
* REVISIT: If the module is loaded then unloaded, wouldn't this cause
* a memory leak?
*/
#ifdef CONFIG_ARCH_ADDRENV
# warning "REVISIT"
#else
binp->alloc[0] = (FAR void *)loadinfo.textalloc;
#endif
#ifdef CONFIG_BINFMT_CONSTRUCTORS
/* Save information about constructors. NOTE: destructors are not
* yet supported.
*/
binp->alloc[1] = loadinfo.ctoralloc;
binp->ctors = loadinfo.ctors;
binp->nctors = loadinfo.nctors;
binp->alloc[2] = loadinfo.dtoralloc;
binp->dtors = loadinfo.dtors;
binp->ndtors = loadinfo.ndtors;
#endif
#ifdef CONFIG_ARCH_ADDRENV
/* Save the address environment in the binfmt structure. This will be
* needed when the module is executed.
*/
up_addrenv_clone(&loadinfo.addrenv, &binp->addrenv);
#endif
elf_dumpentrypt(binp, &loadinfo);
elf_uninit(&loadinfo);
return OK;
errout_with_load:
elf_unload(&loadinfo);
errout_with_init:
elf_uninit(&loadinfo);
errout:
return ret;
}
