int elf_load(FAR struct elf_loadinfo_s *loadinfo)
{
int ret;
bvdbg("loadinfo: %p\n", loadinfo);
DEBUGASSERT(loadinfo && loadinfo->filfd >= 0);
/* Load section headers into memory */
ret = elf_loadshdrs(loadinfo);
if (ret < 0)
{
bdbg("elf_loadshdrs failed: %d\n", ret);
goto errout_with_buffers;
}
/* Determine total size to allocate */
elf_elfsize(loadinfo);
/* Allocate memory and load sections into memory */
ret = elf_loadfile(loadinfo);
if (ret < 0)
{
bdbg("elf_loadfile failed: %d\n", ret);
goto errout_with_buffers;
}
/* Load static constructors and destructors. */
#ifdef CONFIG_BINFMT_CONSTRUCTORS
ret = elf_loadctors(loadinfo);
if (ret < 0)
{
bdbg("elf_loadctors failed: %d\n", ret);
goto errout_with_buffers;
}
ret = elf_loaddtors(loadinfo);
if (ret < 0)
{
bdbg("elf_loaddtors failed: %d\n", ret);
goto errout_with_buffers;
}
#endif
return OK;
/* Error exits */
errout_with_buffers:
elf_unload(loadinfo);
return ret;
}
int
ofw_elf_loadfile(char *filename, vm_offset_t dest,
struct preloaded_file **result)
{
int r;
void *addr;
r = elf_loadfile(filename, dest, result);
if (r != 0)
return (r);
return (0);
}
int elf_load(FAR struct elf_loadinfo_s *loadinfo)
{
int ret;
bvdbg("loadinfo: %p\n", loadinfo);
DEBUGASSERT(loadinfo && loadinfo->filfd >= 0);
/* Load section headers into memory */
ret = elf_loadshdrs(loadinfo);
if (ret < 0)
{
bdbg("ERROR: elf_loadshdrs failed: %d\n", ret);
goto errout_with_buffers;
}
/* Determine total size to allocate */
elf_elfsize(loadinfo);
/* Allocate (and zero) memory for the ELF file. */
ret = elf_addrenv_alloc(loadinfo, loadinfo->textsize, loadinfo->datasize);
if (ret < 0)
{
bdbg("ERROR: elf_addrenv_alloc() failed: %d\n", ret);
goto errout_with_buffers;
}
#ifdef CONFIG_ARCH_ADDRENV
/* If CONFIG_ARCH_ADDRENV=y, then the loaded ELF lies in a virtual address
* space that may not be in place now. elf_addrenv_select() will
* temporarily instantiate that address space.
*/
ret = elf_addrenv_select(loadinfo);
if (ret < 0)
{
bdbg("ERROR: elf_addrenv_select() failed: %d\n", ret);
goto errout_with_buffers;
}
#endif
/* Load ELF section data into memory */
ret = elf_loadfile(loadinfo);
if (ret < 0)
{
bdbg("ERROR: elf_loadfile failed: %d\n", ret);
goto errout_with_addrenv;
}
/* Load static constructors and destructors. */
#ifdef CONFIG_BINFMT_CONSTRUCTORS
ret = elf_loadctors(loadinfo);
if (ret < 0)
{
bdbg("ERROR: elf_loadctors failed: %d\n", ret);
goto errout_with_addrenv;
}
ret = elf_loaddtors(loadinfo);
if (ret < 0)
{
bdbg("ERROR: elf_loaddtors failed: %d\n", ret);
goto errout_with_addrenv;
}
#endif
#ifdef CONFIG_ARCH_ADDRENV
/* Restore the original address environment */
ret = elf_addrenv_restore(loadinfo);
if (ret < 0)
{
bdbg("ERROR: elf_addrenv_restore() failed: %d\n", ret);
goto errout_with_buffers;
}
#endif
return OK;
/* Error exits */
errout_with_addrenv:
#ifdef CONFIG_ARCH_ADDRENV
(void)elf_addrenv_restore(loadinfo);
#endif
errout_with_buffers:
elf_unload(loadinfo);
return ret;
}
int elf_load(FAR struct elf_loadinfo_s *loadinfo)
{
size_t heapsize;
#ifdef CONFIG_UCLIBCXX_EXCEPTION
int exidx;
#endif
int ret;
binfo("loadinfo: %p\n", loadinfo);
DEBUGASSERT(loadinfo && loadinfo->filfd >= 0);
/* Load section headers into memory */
ret = elf_loadshdrs(loadinfo);
if (ret < 0)
{
berr("ERROR: elf_loadshdrs failed: %d\n", ret);
goto errout_with_buffers;
}
/* Determine total size to allocate */
elf_elfsize(loadinfo);
/* Determine the heapsize to allocate. heapsize is ignored if there is
* no address environment because the heap is a shared resource in that
* case. If there is no dynamic stack then heapsize must at least as big
* as the fixed stack size since the stack will be allocated from the heap
* in that case.
*/
#if !defined(CONFIG_ARCH_ADDRENV)
heapsize = 0;
#elif defined(CONFIG_ARCH_STACK_DYNAMIC)
heapsize = ARCH_HEAP_SIZE;
#else
heapsize = MIN(ARCH_HEAP_SIZE, CONFIG_ELF_STACKSIZE);
#endif
/* Allocate (and zero) memory for the ELF file. */
ret = elf_addrenv_alloc(loadinfo, loadinfo->textsize, loadinfo->datasize, heapsize);
if (ret < 0)
{
berr("ERROR: elf_addrenv_alloc() failed: %d\n", ret);
goto errout_with_buffers;
}
#ifdef CONFIG_ARCH_ADDRENV
/* If CONFIG_ARCH_ADDRENV=y, then the loaded ELF lies in a virtual address
* space that may not be in place now. elf_addrenv_select() will
* temporarily instantiate that address space.
*/
ret = elf_addrenv_select(loadinfo);
if (ret < 0)
{
berr("ERROR: elf_addrenv_select() failed: %d\n", ret);
goto errout_with_buffers;
}
#endif
/* Load ELF section data into memory */
ret = elf_loadfile(loadinfo);
if (ret < 0)
{
berr("ERROR: elf_loadfile failed: %d\n", ret);
goto errout_with_addrenv;
}
/* Load static constructors and destructors. */
#ifdef CONFIG_BINFMT_CONSTRUCTORS
ret = elf_loadctors(loadinfo);
if (ret < 0)
{
berr("ERROR: elf_loadctors failed: %d\n", ret);
goto errout_with_addrenv;
}
ret = elf_loaddtors(loadinfo);
if (ret < 0)
{
berr("ERROR: elf_loaddtors failed: %d\n", ret);
goto errout_with_addrenv;
}
#endif
#ifdef CONFIG_UCLIBCXX_EXCEPTION
exidx = elf_findsection(loadinfo, CONFIG_ELF_EXIDX_SECTNAME);
if (exidx < 0)
{
binfo("elf_findsection: Exception Index section not found: %d\n", exidx);
}
else
{
up_init_exidx(loadinfo->shdr[exidx].sh_addr, loadinfo->shdr[exidx].sh_size);
}
#endif
#ifdef CONFIG_ARCH_ADDRENV
/* Restore the original address environment */
ret = elf_addrenv_restore(loadinfo);
if (ret < 0)
{
berr("ERROR: elf_addrenv_restore() failed: %d\n", ret);
goto errout_with_buffers;
}
#endif
return OK;
/* Error exits */
errout_with_addrenv:
#ifdef CONFIG_ARCH_ADDRENV
(void)elf_addrenv_restore(loadinfo);
#endif
errout_with_buffers:
elf_unload(loadinfo);
return ret;
}
