gentoo-overlay/sys-apps/s390-tools/files/s390-tools-1.13.0-larl.patch

https://bugs.gentoo.org/391433

You reported a zipl build problem for 31 bit:
http://marc.info/?l=linux-s390&m=132307473025493&w=2

The following patch (for s390-tools-1.15.0) should fix this problem:
---
From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Subject: zipl: Do not use larl for 31 bit code

The larl instruction is not available for pre z900 machines in 31 bit mode.
In order to be able to compile zipl also for that machines, with this
patch the larl instruction is replaced by instructions that work on
older machines.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
---
 zipl/boot/dumpcommon.S |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/zipl/boot/dumpcommon.S
+++ b/zipl/boot/dumpcommon.S
@@ -1005,7 +1005,7 @@ _count_mem_32:
         mr    %r2,%r1                   # mem size in bytes in %r3
 
         st    %r3,.Ldh_real_mem_size+4-0b(%r13)
-        larl  %r7,.Lmem_upper_limit+4
+        l     %r7,.Lmem_upper_limit_addr-0b(%r13)
         l     %r6,0(%r7)                     # check if we have an upper limit
         clr   %r3,%r6
         bl    .Lsavemem-0b(%r13)
@@ -1018,13 +1018,15 @@ _count_mem_32:
 
         clr   %r6,%r3
         bne   .Lexit-0b(%r13)
-        larl  %r2,.Lmsg_mem_limit_set          # print mem limit warning
+        la    %r2,.Lmsg_mem_limit_set-0b(%r13) # print mem limit warning
         bras  %r14,_sclp_print
 .Lexit:
         lm    %r6,%r15,120(%r15)
         br    %r14
 .Lonemb:
         .int 0x100000
+.Lmem_upper_limit_addr:
+	.long	.Lmem_upper_limit+4
 
 
 # expand Macros

> it fixes most of them, but seems there's still one left :)

Ok, try this one:
---
 zipl/boot/tapedump.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/zipl/boot/tapedump.S
+++ b/zipl/boot/tapedump.S
@@ -532,7 +532,7 @@ _dump_mem_32:
         # Cartridge full
 
         la    %r2,EMEM
-        larl  %r14,_panik_32
+        l     %r14,.Lpanik_32-0b(%r13)
         basr  %r14,%r14
 
 1:      # All memory written