http://sourceware.org/ml/gdb-patches/2010-11/msg00112.html

gdb/ChangeLog
	* remote-sim.c (gdbsim_store_register): Update API to
	sim_store_register to check more error conditions.
include/gdb/ChangeLog
	* remote-sim.h (sim_store_register): Update the API
	documentation for this function.
sim/erc32/ChangeLog
sim/h8300/ChangeLog
sim/m32c/ChangeLog
sim/mn10300/ChangeLog
sim/ppc/ChangeLog
sim/rx/ChangeLog
sim/v850/ChangeLog
	* ???.c (sim_store_register): Update return value to
	match new API.

2 files changed, 12 insertions, 5 deletions

diff --git a/include/gdb/ChangeLog b/include/gdb/ChangeLog
index 4e6b85217..19509e221 100644
--- a/include/gdb/ChangeLog
+++ b/include/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2011-01-11  Andrew Burgess  <aburgess@broadcom.com>
+
+	* remote-sim.h (sim_store_register): Update the API
+	documentation for this function.
+
 2010-09-06  Pedro Alves  <pedro@codesourcery.com>
 
 	* signals.def: Replace all ANY uses by SET with specific numbers.
diff --git a/include/gdb/remote-sim.h b/include/gdb/remote-sim.h
index 9c204525b..a171cfda5 100644
--- a/include/gdb/remote-sim.h
+++ b/include/gdb/remote-sim.h
@@ -191,13 +191,15 @@ int sim_fetch_register (SIM_DESC sd, int regno, unsigned char *buf, int length);
 
 
 /* Store register REGNO from the raw (target endian) value in BUF.
-   Return the actual size of the register or zero if REGNO is not
-   applicable.
 
-   Legacy implementations ignore LENGTH and always return -1.
+   Return the actual size of the register, any size not equal to
+   LENGTH indicates the register was not updated correctly.
 
-   If LENGTH does not match the size of REGNO no data is transfered
-   (the actual register size is still returned). */
+   Return a LENGTH of -1 to indicate the register was not updated
+   and an error has occurred.
+
+   Return a LENGTH of 0 to indicate the register was not updated
+   but no error has occurred. */
 
 int sim_store_register (SIM_DESC sd, int regno, unsigned char *buf, int length);