* Restructured (and partly rewritten) by:
* Björn Ekwall <bj0rn@blox.se> February 1999
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
#include "libbb.h"
#include "modutils.h"
-#include <libgen.h>
#include <sys/utsname.h>
#if ENABLE_FEATURE_INSMOD_LOADINKMEM
#define USE_SINGLE
#endif
+/* NDS32 support */
+#if defined(__nds32__) || defined(__NDS32__)
+#define CONFIG_USE_GOT_ENTRIES
+#define CONFIG_GOT_ENTRY_SIZE 4
+#define CONFIG_USE_SINGLE
+
+#if defined(__NDS32_EB__)
+#define MATCH_MACHINE(x) (x == EM_NDS32)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
+#endif
+
+#if defined(__NDS32_EL__)
+#define MATCH_MACHINE(x) (x == EM_NDS32)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
+#endif
+#endif
+
/* blackfin */
#if defined(BFIN)
#define MATCH_MACHINE(x) (x == EM_BLACKFIN)
break;
case R_H8_PCREL16:
v -= dot + 2;
- if ((ElfW(Sword))v > 0x7fff ||
- (ElfW(Sword))v < -(ElfW(Sword))0x8000)
+ if ((ElfW(Sword))v > 0x7fff
+ || (ElfW(Sword))v < -(ElfW(Sword))0x8000
+ ) {
ret = obj_reloc_overflow;
- else
+ } else {
*(unsigned short *)loc = v;
+ }
break;
case R_H8_PCREL8:
v -= dot + 1;
- if ((ElfW(Sword))v > 0x7f ||
- (ElfW(Sword))v < -(ElfW(Sword))0x80)
+ if ((ElfW(Sword))v > 0x7f
+ || (ElfW(Sword))v < -(ElfW(Sword))0x80
+ ) {
ret = obj_reloc_overflow;
- else
+ } else {
*(unsigned char *)loc = v;
+ }
break;
#elif defined(__i386__)
#endif
default:
- printf("Warning: unhandled reloc %d\n",(int)ELF_R_TYPE(rel->r_info));
+ printf("Warning: unhandled reloc %d\n", (int)ELF_R_TYPE(rel->r_info));
ret = obj_reloc_unhandled;
break;
bb_error_msg_and_die("symbol for parameter %s not found", param);
/* Number of parameters */
+ min = max = 1;
if (isdigit(*pinfo)) {
- min = strtoul(pinfo, &pinfo, 10);
+ min = max = strtoul(pinfo, &pinfo, 10);
if (*pinfo == '-')
max = strtoul(pinfo + 1, &pinfo, 10);
- else
- max = min;
- } else
- min = max = 1;
+ }
contents = f->sections[sym->secidx]->contents;
loc = contents + sym->value;
/* Parse parameter values */
n = 0;
p = val;
- while (*p != 0) {
+ while (*p) {
+ char sv_ch;
char *endp;
if (++n > max)
switch (*pinfo) {
case 's':
len = strcspn(p, ",");
- p[len] = 0;
+ sv_ch = p[len];
+ p[len] = '\0';
obj_string_patch(f, sym->secidx,
loc - contents, p);
loc += tgt_sizeof_char_p;
p += len;
+ *p = sv_ch;
break;
case 'c':
len = strcspn(p, ",");
- p[len] = 0;
+ sv_ch = p[len];
+ p[len] = '\0';
if (len >= charssize)
bb_error_msg_and_die("string too long for %s (max %ld)", param,
charssize - 1);
strcpy((char *) loc, p);
loc += charssize;
p += len;
+ *p = sv_ch;
break;
case 'b':
*loc++ = strtoul(p, &endp, 0);
static struct obj_file *obj_load(char *image, size_t image_size, int loadprogbits)
{
+ typedef uint32_t aliased_uint32_t FIX_ALIASING;
#if BB_LITTLE_ENDIAN
# define ELFMAG_U32 ((uint32_t)(ELFMAG0 + 0x100 * (ELFMAG1 + (0x100 * (ELFMAG2 + 0x100 * ELFMAG3)))))
#else
bb_error_msg_and_die("error while loading ELF header");
memcpy(&f->header, image, sizeof(f->header));
- if (*(uint32_t*)(&f->header.e_ident) != ELFMAG_U32) {
+ if (*(aliased_uint32_t*)(&f->header.e_ident) != ELFMAG_U32) {
bb_error_msg_and_die("not an ELF file");
}
if (f->header.e_ident[EI_CLASS] != ELFCLASSM
case SHT_SYMTAB:
case SHT_STRTAB:
case SHT_RELM:
+#if defined(__mips__)
+ case SHT_MIPS_DWARF:
+#endif
sec->contents = NULL;
if (sec->header.sh_size > 0) {
sec->contents = xmalloc(sec->header.sh_size);
/* Check if loading this module will taint the kernel. */
static void check_tainted_module(struct obj_file *f, const char *m_name)
{
- static const char tainted_file[] ALIGN1 = TAINT_FILENAME;
-
int fd, kernel_has_tainted;
const char *ptr;
kernel_has_tainted = 1;
- fd = open(tainted_file, O_RDWR);
+ fd = open(TAINT_FILENAME, O_RDWR);
if (fd < 0) {
if (errno == ENOENT)
kernel_has_tainted = 0;
else if (errno == EACCES)
kernel_has_tainted = 1;
else {
- perror(tainted_file);
+ bb_simple_perror_msg(TAINT_FILENAME);
kernel_has_tainted = 0;
}
}
int m_has_modinfo;
#endif
char *image;
- size_t image_size = 64 * 1024 * 1024;
-
- /* Load module into memory and unzip if compressed */
- image = xmalloc_open_zipped_read_close(m_filename, &image_size);
- if (!image)
- return EXIT_FAILURE;
+ size_t image_size;
+ bool mmaped;
+
+ image_size = INT_MAX - 4095;
+ mmaped = 0;
+ image = try_to_mmap_module(m_filename, &image_size);
+ if (image) {
+ mmaped = 1;
+ } else {
+ /* Load module into memory and unzip if compressed */
+ image = xmalloc_open_zipped_read_close(m_filename, &image_size);
+ if (!image)
+ return EXIT_FAILURE;
+ }
m_name = xstrdup(bb_basename(m_filename));
/* "module.o[.gz]" -> "module" */
exit_status = EXIT_SUCCESS;
out:
- free(image);
+ if (mmaped)
+ munmap(image, image_size);
+ else
+ free(image);
free(m_name);
return exit_status;
projects / oweals / busybox.git / blobdiff