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import support for microblaze relocations from uClinux-dist

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This commit is contained in:
Mike Frysinger 2006-06-06 06:30:32 +00:00
parent 2a13175440
commit 280dae74b0
1 changed files with 59 additions and 0 deletions
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59
modutils/insmod.c
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@ -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: