aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/relocs_check.pl
diff options
context:
space:
mode:
authorSuzuki Poulose <suzuki@in.ibm.com>2011-12-14 22:58:12 +0000
committerJosh Boyer <jwboyer@gmail.com>2011-12-20 10:21:08 -0500
commit9c5f7d39a86316cd13baf973c90ed27f9f1cc979 (patch)
tree615117060a4b8b87cf1496abca0fe0365e845388 /arch/powerpc/relocs_check.pl
parent239132454583d474932d8835f87a244f6f1bff9e (diff)
powerpc: Process dynamic relocations for kernel
The following patch implements the dynamic relocation processing for PPC32 kernel. relocate() accepts the target virtual address and relocates the kernel image to the same. Currently the following relocation types are handled : R_PPC_RELATIVE R_PPC_ADDR16_LO R_PPC_ADDR16_HI R_PPC_ADDR16_HA The last 3 relocations in the above list depends on value of Symbol indexed whose index is encoded in the Relocation entry. Hence we need the Symbol Table for processing such relocations. Note: The GNU ld for ppc32 produces buggy relocations for relocation types that depend on symbols. The value of the symbols with STB_LOCAL scope should be assumed to be zero. - Alan Modra Signed-off-by: Suzuki K. Poulose <suzuki@in.ibm.com> Signed-off-by: Josh Poimboeuf <jpoimboe@linux.vnet.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Alan Modra <amodra@au1.ibm.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
Diffstat (limited to 'arch/powerpc/relocs_check.pl')
-rwxr-xr-xarch/powerpc/relocs_check.pl14
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/powerpc/relocs_check.pl b/arch/powerpc/relocs_check.pl
index d2571096c3e9..7f5b83808862 100755
--- a/arch/powerpc/relocs_check.pl
+++ b/arch/powerpc/relocs_check.pl
@@ -32,8 +32,18 @@ while (<FD>) {
next if (!/\s+R_/);
# These relocations are okay
- next if (/R_PPC64_RELATIVE/ or /R_PPC64_NONE/ or
- /R_PPC64_ADDR64\s+mach_/);
+ # On PPC64:
+ # R_PPC64_RELATIVE, R_PPC64_NONE, R_PPC64_ADDR64
+ # On PPC:
+ # R_PPC_RELATIVE, R_PPC_ADDR16_HI,
+ # R_PPC_ADDR16_HA,R_PPC_ADDR16_LO,
+ # R_PPC_NONE
+
+ next if (/\bR_PPC64_RELATIVE\b/ or /\bR_PPC64_NONE\b/ or
+ /\bR_PPC64_ADDR64\s+mach_/);
+ next if (/\bR_PPC_ADDR16_LO\b/ or /\bR_PPC_ADDR16_HI\b/ or
+ /\bR_PPC_ADDR16_HA\b/ or /\bR_PPC_RELATIVE\b/ or
+ /\bR_PPC_NONE\b/);
# If we see this type of relcoation it's an idication that
# we /may/ be using an old version of binutils.

Privacy Policy