[src/trunk]: src/external/gpl3/gdb/dist/gdb supply a fake cs that has has not...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/775b2355bdb5
branches:  trunk
changeset: 328737:775b2355bdb5
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Apr 16 00:32:33 2014 +0000

description:
supply a fake cs that has has not have SEL_UPL set, so that our trapframe
sniffer works.

diffstat:

 external/gpl3/gdb/dist/gdb/amd64nbsd-nat.c |  3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diffs (20 lines):

diff -r a2be68457ea4 -r 775b2355bdb5 external/gpl3/gdb/dist/gdb/amd64nbsd-nat.c
--- a/external/gpl3/gdb/dist/gdb/amd64nbsd-nat.c        Tue Apr 15 22:09:27 2014 +0000
+++ b/external/gpl3/gdb/dist/gdb/amd64nbsd-nat.c        Wed Apr 16 00:32:33 2014 +0000
@@ -78,6 +78,7 @@
 {
   struct switchframe sf;
   int regnum;
+  long zero = 0;
 
   /* The following is true for NetBSD/amd64:
 
@@ -119,6 +120,8 @@
   regcache_raw_supply (regcache, AMD64_RBP_REGNUM, &pcb->pcb_rbp);
   regcache_raw_supply (regcache, AMD64_FS_REGNUM, &pcb->pcb_fs);
   regcache_raw_supply (regcache, AMD64_GS_REGNUM, &pcb->pcb_gs);
+  /* fake it to 0 so SEL_UPL is not set (our sniffer looks at CS) */
+  regcache_raw_supply (regcache, AMD64_CS_REGNUM, &zero);
 
   return 1;
 }