Merge tag 'for-linus' of git://github.com/rustyrussell/linux

* tag 'for-linus' of git://github.com/rustyrussell/linux:
  mod/file2alias: make modpost compile on darwin again

1 files changed, 31 insertions, 4 deletions

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index d0de2a2c3a2d..b89efe6e4c85 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -46,11 +46,37 @@ struct devtable {
         void *function;
 };
 
+#define ___cat(a,b) a ## b
+#define __cat(a,b) ___cat(a,b)
+
+/* we need some special handling for this host tool running eventually on
+ * Darwin. The Mach-O section handling is a bit different than ELF section
+ * handling. The differnces in detail are:
+ *  a) we have segments which have sections
+ *  b) we need a API call to get the respective section symbols */
+#if defined(__MACH__)
+#include <mach-o/getsect.h>
+
+#define INIT_SECTION(name)  do {                                        \
+                unsigned long name ## _len;                             \
+                char *__cat(pstart_,name) = getsectdata("__TEXT",       \
+                        #name, &__cat(name,_len));                      \
+                char *__cat(pstop_,name) = __cat(pstart_,name) +        \
+                        __cat(name, _len);                              \
+                __cat(__start_,name) = (void *)__cat(pstart_,name);     \
+                __cat(__stop_,name) = (void *)__cat(pstop_,name);       \
+        } while (0)
+#define SECTION(name)   __attribute__((section("__TEXT, " #name)))
+
+struct devtable **__start___devtable, **__stop___devtable;
+#else
+#define INIT_SECTION(name) /* no-op for ELF */
+#define SECTION(name)   __attribute__((section(#name)))
+
 /* We construct a table of pointers in an ELF section (pointers generally
  * go unpadded by gcc).  ld creates boundary syms for us. */
 extern struct devtable *__start___devtable[], *__stop___devtable[];
-#define ___cat(a,b) a ## b
-#define __cat(a,b) ___cat(a,b)
+#endif /* __MACH__ */
 
 #if __GNUC__ == 3 && __GNUC_MINOR__ < 3
 # define __used                 __attribute__((__unused__))
@@ -65,8 +91,8 @@ extern struct devtable *__start___devtable[], *__stop___devtable[];
                                                 (type *)NULL,           \
                                                 (char *)NULL)),         \
                 sizeof(type), (function) };                             \
-        static struct devtable *__attribute__((section("__devtable"))) \
-                __used __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
+        static struct devtable *SECTION(__devtable) __used \
+                __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
 
 #define ADD(str, sep, cond, field)                              \
 do {                                                            \
@@ -1080,6 +1106,7 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
                 do_pnp_card_entries(symval, sym->st_size, mod);
         else {
                 struct devtable **p;
+                INIT_SECTION(__devtable);
 
                 for (p = __start___devtable; p < __stop___devtable; p++) {
                         if (sym_is(name, namelen, (*p)->device_id)) {