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-rw-r--r--gdb/ChangeLog4
-rw-r--r--gdb/amd64fbsd-nat.c5
2 files changed, 9 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8f324fb..0c83a78 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2009-10-19 Joel Brobecker <brobecker@adacore.com>
+
+ * amd64fbsd-nat.c (amd64fbsd_supply_pcb): Add comment.
+
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
diff --git a/gdb/amd64fbsd-nat.c b/gdb/amd64fbsd-nat.c
index 5a93ec3..eb154898 100644
--- a/gdb/amd64fbsd-nat.c
+++ b/gdb/amd64fbsd-nat.c
@@ -125,6 +125,11 @@ amd64fbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
regcache_raw_supply (regcache, 14, &pcb->pcb_r14);
regcache_raw_supply (regcache, 15, &pcb->pcb_r15);
#if (__FreeBSD_version < 800075)
+ /* struct pcb provides the pcb_ds/pcb_es/pcb_fs/pcb_gs fields only
+ up until __FreeBSD_version 800074: The removal of these fields
+ occurred on 2009-04-01 while the __FreeBSD_version number was
+ bumped to 800075 on 2009-04-06. So 800075 is the closest version
+ number where we should not try to access these fields. */
regcache_raw_supply (regcache, AMD64_DS_REGNUM, &pcb->pcb_ds);
regcache_raw_supply (regcache, AMD64_ES_REGNUM, &pcb->pcb_es);
regcache_raw_supply (regcache, AMD64_FS_REGNUM, &pcb->pcb_fs);