import support for microblaze relocations from uClinux-dist

diff --git a/modutils/insmod.c b/modutils/insmod.c
index f694329..7ed4cdb 100644 (file)
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -988,6 +988,65 @@ arch_apply_relocation(struct obj_file *f,
                        *loc += v - got;
                        break;
 
+#elif defined (__microblaze__)
+               case R_MICROBLAZE_NONE:
+               case R_MICROBLAZE_64_NONE:
+               case R_MICROBLAZE_32_SYM_OP_SYM:
+               case R_MICROBLAZE_32_PCREL:
+                       break;
+
+               case R_MICROBLAZE_64_PCREL: {
+                       /* dot is the address of the current instruction.
+                        * v is the target symbol address.
+                        * So we need to extract the offset in the code,
+                        * adding v, then subtrating the current address 
+                        * of this instruction.
+                        * Ex: "IMM 0xFFFE  bralid 0x0000" = "bralid 0xFFFE0000"
+                        */
+
+                       /* Get split offset stored in code */
+                       unsigned int temp = (loc[0] & 0xFFFF) << 16 |
+                                               (loc[1] & 0xFFFF);
+
+                       /* Adjust relative offset. -4 adjustment required 
+                        * because dot points to the IMM insn, but branch
+                        * is computed relative to the branch instruction itself.
+                        */
+                       temp += v - dot - 4;
+
+                       /* Store back into code */
+                       loc[0] = (loc[0] & 0xFFFF0000) | temp >> 16;
+                       loc[1] = (loc[1] & 0xFFFF0000) | (temp & 0xFFFF);
+
+                       break;
+               }
+
+               case R_MICROBLAZE_32:
+                       *loc += v;
+                       break;
+
+               case R_MICROBLAZE_64: {
+                       /* Get split pointer stored in code */
+                       unsigned int temp1 = (loc[0] & 0xFFFF) << 16 |
+                                               (loc[1] & 0xFFFF);
+
+                       /* Add reloc offset */
+                       temp1+=v;
+
+                       /* Store back into code */
+                       loc[0] = (loc[0] & 0xFFFF0000) | temp1 >> 16;
+                       loc[1] = (loc[1] & 0xFFFF0000) | (temp1 & 0xFFFF);
+
+                       break;
+               }
+
+               case R_MICROBLAZE_32_PCREL_LO:
+               case R_MICROBLAZE_32_LO:
+               case R_MICROBLAZE_SRO32:
+               case R_MICROBLAZE_SRW32:
+                       ret = obj_reloc_unhandled;
+                       break;
+
 #elif defined(__mc68000__)
 
                case R_68K_NONE: