[PATCH 7/11] Add BFIN_MAX_REGISTER_SIZE

[Alan Hayward <Alan.Hayward@arm.com>]

Max size set to 32bits, which I determined using regformats/reg-bfin.dat

Tested on a --enable-targets=all build using make check with board files
unix and native-gdbserver.

I do not have an BFIN machine to test on.

Ok to commit?

Alan.


2017-04-04  Alan Hayward  <alan.hayward@arm.com>

	* bfin-tdep.c (bfin_pseudo_register_read): Use BFIN_MAX_REGISTER_SIZE.
	(bfin_pseudo_register_write): Likewise.
	* bfin-tdep.h (BFIN_MAX_REGISTER_SIZE): Add.


diff --git a/gdb/bfin-tdep.h b/gdb/bfin-tdep.h
index 164466c2d6d1bd2dc0bc47ca3729d0e42e2d7ccb..e89e5c3138eb8245b10ccda98f0672e8e3fd728b 100644
--- a/gdb/bfin-tdep.h
+++ b/gdb/bfin-tdep.h
@@ -84,6 +84,9 @@ enum gdb_regnum {
 #define BFIN_NUM_REGS (BFIN_PC_REGNUM + 1)
 #define BFIN_NUM_PSEUDO_REGS (1)

+/* Big enough to hold the size of the largest register in bytes.  */
+#define BFIN_MAX_REGISTER_SIZE	4
+
 /* The ABIs for Blackfin.  */
 enum bfin_abi
 {
diff --git a/gdb/bfin-tdep.c b/gdb/bfin-tdep.c
index 3df1ba387a323dc6827b1189432f8877d1833184..9b45633cab15b8e0adb0d51a2fa650dc2bc6339b 100644
--- a/gdb/bfin-tdep.c
+++ b/gdb/bfin-tdep.c
@@ -689,7 +689,7 @@ static enum register_status
 bfin_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
 			   int regnum, gdb_byte *buffer)
 {
-  gdb_byte *buf = (gdb_byte *) alloca (MAX_REGISTER_SIZE);
+  gdb_byte *buf = (gdb_byte *) alloca (BFIN_MAX_REGISTER_SIZE);
   enum register_status status;

   if (regnum != BFIN_CC_REGNUM)
@@ -710,7 +710,7 @@ static void
 bfin_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
 			    int regnum, const gdb_byte *buffer)
 {
-  gdb_byte *buf = (gdb_byte *) alloca (MAX_REGISTER_SIZE);
+  gdb_byte *buf = (gdb_byte *) alloca (BFIN_MAX_REGISTER_SIZE);

   if (regnum != BFIN_CC_REGNUM)
     internal_error (__FILE__, __LINE__,