sh: Merge sh and sh64 module.c.

This is trivial, in that they're both effectively the same for the base
relocations anyways. SH-5 doesn't need the unaligned bits, and has a
few extra relocations, which are never hit on non-SH5 parts.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 49 insertions, 13 deletions

diff --git a/arch/sh/kernel/module.c b/arch/sh/kernel/module.c
index 142a4e5b7ebc..b3d0a03b4c76 100644
--- a/arch/sh/kernel/module.c
+++ b/arch/sh/kernel/module.c
@@ -1,5 +1,15 @@
 /*  Kernel module help for SH.
 
+    SHcompact version by Kaz Kojima and Paul Mundt.
+
+    SHmedia bits:
+
+        Copyright 2004 SuperH (UK) Ltd
+        Author: Richard Curnow
+
+        Based on the sh version, and on code from the sh64-specific parts of
+        modutils, originally written by Richard Curnow and Ben Gaster.
+
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
@@ -21,12 +31,6 @@
 #include <linux/string.h>
 #include <linux/kernel.h>
 
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(fmt...)
-#endif
-
 void *module_alloc(unsigned long size)
 {
         if (size == 0)
@@ -52,6 +56,7 @@ int module_frob_arch_sections(Elf_Ehdr *hdr,
         return 0;
 }
 
+#ifdef CONFIG_SUPERH32
 #define COPY_UNALIGNED_WORD(sw, tw, align) \
 { \
         void *__s = &(sw), *__t = &(tw); \
@@ -74,6 +79,10 @@ int module_frob_arch_sections(Elf_Ehdr *hdr,
                 break; \
         } \
 }
+#else
+/* One thing SHmedia doesn't screw up! */
+#define COPY_UNALIGNED_WORD(sw, tw, align)      { (tw) = (sw); }
+#endif
 
 int apply_relocate_add(Elf32_Shdr *sechdrs,
                    const char *strtab,
@@ -89,8 +98,8 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
         uint32_t value;
         int align;
 
-        DEBUGP("Applying relocate section %u to %u\n", relsec,
-               sechdrs[relsec].sh_info);
+        pr_debug("Applying relocate section %u to %u\n", relsec,
+                 sechdrs[relsec].sh_info);
         for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
                 /* This is where to make the change */
                 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
@@ -102,17 +111,44 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
                 relocation = sym->st_value + rel[i].r_addend;
                 align = (int)location & 3;
 
+#ifdef CONFIG_SUPERH64
+                /* For text addresses, bit2 of the st_other field indicates
+                 * whether the symbol is SHmedia (1) or SHcompact (0).  If
+                 * SHmedia, the LSB of the symbol needs to be asserted
+                 * for the CPU to be in SHmedia mode when it starts executing
+                 * the branch target. */
+                relocation |= (sym->st_other & 4);
+#endif
+
                 switch (ELF32_R_TYPE(rel[i].r_info)) {
                 case R_SH_DIR32:
-                        COPY_UNALIGNED_WORD (*location, value, align);
+                        COPY_UNALIGNED_WORD (*location, value, align);
                         value += relocation;
-                        COPY_UNALIGNED_WORD (value, *location, align);
+                        COPY_UNALIGNED_WORD (value, *location, align);
                         break;
                 case R_SH_REL32:
-                        relocation = (relocation - (Elf32_Addr) location);
-                        COPY_UNALIGNED_WORD (*location, value, align);
+                        relocation = (relocation - (Elf32_Addr) location);
+                        COPY_UNALIGNED_WORD (*location, value, align);
                         value += relocation;
-                        COPY_UNALIGNED_WORD (value, *location, align);
+                        COPY_UNALIGNED_WORD (value, *location, align);
+                        break;
+                case R_SH_IMM_LOW16:
+                        *location = (*location & ~0x3fffc00) |
+                                ((relocation & 0xffff) << 10);
+                        break;
+                case R_SH_IMM_MEDLOW16:
+                        *location = (*location & ~0x3fffc00) |
+                                (((relocation >> 16) & 0xffff) << 10);
+                        break;
+                case R_SH_IMM_LOW16_PCREL:
+                        relocation -= (Elf32_Addr) location;
+                        *location = (*location & ~0x3fffc00) |
+                                ((relocation & 0xffff) << 10);
+                        break;
+                case R_SH_IMM_MEDLOW16_PCREL:
+                        relocation -= (Elf32_Addr) location;
+                        *location = (*location & ~0x3fffc00) |
+                                (((relocation >> 16) & 0xffff) << 10);
                         break;
                 default:
                         printk(KERN_ERR "module %s: Unknown relocation: %u\n",