summaryrefslogtreecommitdiffstats
path: root/scripts/mod/mk_elfconfig.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /scripts/mod/mk_elfconfig.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'scripts/mod/mk_elfconfig.c')
-rw-r--r--scripts/mod/mk_elfconfig.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/scripts/mod/mk_elfconfig.c b/scripts/mod/mk_elfconfig.c
new file mode 100644
index 000000000000..de2aabf89fb3
--- /dev/null
+++ b/scripts/mod/mk_elfconfig.c
@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <elf.h>
+
+int
+main(int argc, char **argv)
+{
+ unsigned char ei[EI_NIDENT];
+ union { short s; char c[2]; } endian_test;
+
+ if (argc != 2) {
+ fprintf(stderr, "Error: no arch\n");
+ }
+ if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
+ fprintf(stderr, "Error: input truncated\n");
+ return 1;
+ }
+ if (memcmp(ei, ELFMAG, SELFMAG) != 0) {
+ fprintf(stderr, "Error: not ELF\n");
+ return 1;
+ }
+ switch (ei[EI_CLASS]) {
+ case ELFCLASS32:
+ printf("#define KERNEL_ELFCLASS ELFCLASS32\n");
+ break;
+ case ELFCLASS64:
+ printf("#define KERNEL_ELFCLASS ELFCLASS64\n");
+ break;
+ default:
+ abort();
+ }
+ switch (ei[EI_DATA]) {
+ case ELFDATA2LSB:
+ printf("#define KERNEL_ELFDATA ELFDATA2LSB\n");
+ break;
+ case ELFDATA2MSB:
+ printf("#define KERNEL_ELFDATA ELFDATA2MSB\n");
+ break;
+ default:
+ abort();
+ }
+
+ if (sizeof(unsigned long) == 4) {
+ printf("#define HOST_ELFCLASS ELFCLASS32\n");
+ } else if (sizeof(unsigned long) == 8) {
+ printf("#define HOST_ELFCLASS ELFCLASS64\n");
+ }
+
+ endian_test.s = 0x0102;
+ if (memcmp(endian_test.c, "\x01\x02", 2) == 0)
+ printf("#define HOST_ELFDATA ELFDATA2MSB\n");
+ else if (memcmp(endian_test.c, "\x02\x01", 2) == 0)
+ printf("#define HOST_ELFDATA ELFDATA2LSB\n");
+ else
+ abort();
+
+ if ((strcmp(argv[1], "v850") == 0) || (strcmp(argv[1], "h8300") == 0))
+ printf("#define MODULE_SYMBOL_PREFIX \"_\"\n");
+ else
+ printf("#define MODULE_SYMBOL_PREFIX \"\"\n");
+
+ return 0;
+}
+