Re: [Gcl-devel] Support for little-endian ppc64

[Jerry James]

On Tue, Sep 23, 2014 at 10:41 AM, Jerry James <address@hidden> wrote:
> The failure is due to a reloc of type R_PPC64_REL32, which isn't
> currently handled.  But I wonder if this is going to work, even if
> that reloc type is handled.  Should we pursue fixing the gcl build on
> ppc64le, or is that a foolish thing to attempt at this stage?

This was a silly question, given the existence of
h/elf64_ppcle_reloc.h.  I think this patch is needed:

--- h/elf64_ppcle_reloc.h.orig 2014-09-06 09:45:30.000000000 -0600
+++ h/elf64_ppcle_reloc.h 2014-09-23 11:41:12.586957300 -0600
@@ -22,3 +22,6 @@
     case R_PPC64_TOC:
       store_val(where,~0L,toc->st_value);
       break;
+    case R_PPC64_REL32:
+      store_val(where,~0L,(s+a-p));
+      break;
--- h/elf64_ppc_reloc.h.orig 2014-09-06 09:45:30.000000000 -0600
+++ h/elf64_ppc_reloc.h 2014-09-23 12:02:45.257127793 -0600
@@ -17,3 +17,6 @@
     case R_PPC64_TOC:
       store_val(where,~0L,toc);
       break;
+    case R_PPC64_REL32:
+      store_val(where,~0L,(s+a-p));
+      break;

But I am by no means any kind of expert on relocs, so please don't
take my word for it.  After applying that patch, the build gets
farther but now fails like this (on big-endian ppc64):

Compiling GCL_PCL_LOW...
Compiling /builddir/build/BUILD/gcl/unixport/../pcl/gcl_pcl_low.lisp.
End of Pass 1.
End of Pass 2.
OPTIMIZE levels: Safety=1 (No runtime error checking), Space=0, Speed=3
Finished compiling /builddir/build/BUILD/gcl/unixport/../pcl/gcl_pcl_low.o.
Loading binary of GCL_PCL_LOW...
Loading /builddir/build/BUILD/gcl/unixport/../pcl/gcl_pcl_low.o
mprotect failure: 0x14e0000 65536 7: Permission denied
Error: The assertion !clear_protect_memory(memory) on line 580 of
sfaslelf.c in function fasload failed
Fast links are on: do (si::use-fast-links nil) for debugging
Error signalled by OR.
Broken at OR.  Type :H for Help.
PCL>>makefile:34: recipe for target 'gcl_pcl_boot.c' failed
make[1]: Leaving directory '/builddir/build/BUILD/gcl/pcl'
make[1]: *** [gcl_pcl_boot.c] Error 255
makefile:83: recipe for target 'unixport/saved_pcl_gcl' failed

I will try to figure out what is going wrong there.  Regards,
-- 
Jerry James
http://www.jamezone.org/