MIPS64 N64 SIGBUS error

[Waldemar Brodkorb]

Hi Bernhard,
Bernhard Reutner-Fischer wrote,

> On 24 November 2013 10:51, Waldemar Brodkorb <wbx at openadk.org> wrote:
> > Hi Developers,
> >
> > I am trying to find the reason for a SIGBUS error, when
> 
> which binutils? ld.gold or bfd?
> thanks,

Binutils 2.23.2. normal ld not ld.gold.
I have done a deeper look into glibc 2.18 code and found out that
they are using ElfW(Addr) for the relocation address (or negative
offset?), see ./ports/sysdeps/mips/dl-machine.h.

After changing this, the SIGBUS is gone.
I have done following change to fix the debug output, too:

diff -Nur uClibc-dev.orig/ldso/ldso/mips/elfinterp.c uClibc-dev/ldso/ldso/mips/elfinterp.c
--- uClibc-dev.orig/ldso/ldso/mips/elfinterp.c	2013-11-23 22:51:50.000000000 +0100
+++ uClibc-dev/ldso/ldso/mips/elfinterp.c	2013-11-25 11:46:04.000000000 +0100
@@ -259,11 +259,11 @@
 					case R_MIPS_TLS_TPREL32:
 					case R_MIPS_TLS_TPREL64:
 						CHECK_STATIC_TLS((struct link_map *)tls_tpnt);
-						*(ElfW(Word) *)reloc_addr +=
+						*(ElfW(Addr) *)reloc_addr +=
 							TLS_TPREL_VALUE (tls_tpnt, symbol_addr);
 #ifdef __SUPPORT_LD_DEBUG__
 						_dl_dprintf(2, "TLS_TPREL  : %s, %x, %x\n",
-							symname, old_val, *((unsigned int *)reloc_addr));
+							symname, old_val, *((unsigned long *)reloc_addr));
 #endif
 						break;
 				}

What do you think about this change? I verified that it does not
effect a mips32 o32 build.

Thanks for any comments.
 Waldemar