Add 2 new archsw interfaces:

1.  arch_loadaddr - used by platform code to adjust the address at which
    the object gets loaded. Implement PC98 using this new interface instead
    of using conditional compilation. For ELF objects the ELF header is
    passed as the data pointer. For raw files it's the filename. Note that
    ELF objects are first considered as raw files.
2.  arch_loadseg - used by platform code to keep track of actual segments,
    so that (instruction) caches can be flushed or translations can be
    created. Both the ELF header as well as the program header are passed
    to allow platform code to treat the kernel proper differently from any
    additional modules and to have all the relevant details of the loaded
    segment (e.g. protection).

1 files changed, 18 insertions, 0 deletions

diff --git a/sys/boot/common/bootstrap.h b/sys/boot/common/bootstrap.h
index bf3f962..d8b4551 100644
--- a/sys/boot/common/bootstrap.h
+++ b/sys/boot/common/bootstrap.h
@@ -296,6 +296,24 @@ struct arch_switch
     /* Perform ISA byte port I/O (only for systems with ISA) */
     int		(*arch_isainb)(int port);
     void	(*arch_isaoutb)(int port, int value);
+
+    /*
+     * Interface to adjust the load address according to the "object"
+     * being loaded.
+     */
+    uint64_t	(*arch_loadaddr)(u_int type, void *data, uint64_t addr);
+#define	LOAD_ELF	1	/* data points to the ELF header. */
+#define	LOAD_RAW	2	/* data points to the file name. */
+
+    /*
+     * Interface to inform MD code about a loaded (ELF) segment. This
+     * can be used to flush caches and/or set up translations.
+     */
+#ifdef __elfN
+    void	(*arch_loadseg)(Elf_Ehdr *eh, Elf_Phdr *ph, uint64_t delta);
+#else
+    void	(*arch_loadseg)(void *eh, void *ph, uint64_t delta);
+#endif
 };
 extern struct arch_switch archsw;