gdb10: Fixes for ARC

Here we add a couple of fixes and improvements for ARC processors.
All except 1 patch are already in the upstream "master" branch
and will be an essential part of GCC 11.x whenever it gets released.

The most important are first 4 patches (0005-0008) which introduce
support of full native GDB support in Linux on ARC.

And the rests are tiny, yet useful improvements.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/packages/gdb/10.2/0009-arc-Make-variable-name-in-comments-uppercase.patch b/packages/gdb/10.2/0009-arc-Make-variable-name-in-comments-uppercase.patch
new file mode 100644
index 0000000..eb647f6
--- /dev/null
+++ b/packages/gdb/10.2/0009-arc-Make-variable-name-in-comments-uppercase.patch
@@ -0,0 +1,49 @@
+From f1369c8a098508296d4c28b97e1f196d94b7b506 Mon Sep 17 00:00:00 2001
+From: Shahab Vahedi <shahab@synopsys.com>
+Date: Tue, 22 Dec 2020 12:27:00 +0100
+Subject: [PATCH 12/20] arc: Make variable name in comments uppercase
+
+The word "regnum" in comments should be uppercase, because it
+reflects a variable name in the code.
+
+gdb/ChangeLog
+
+	* arc-linux-tdep.c: Replace "regnum" with "REGNUM" in comments.
+
+Will be a part of GDB 11:
+https://sourceware.org/git?p=binutils-gdb.git;a=commit;h=acf10cacc6bd596ef7327063038bb1ee020c07d0
+---
+ gdb/ChangeLog        |    4 ++++
+ gdb/arc-linux-tdep.c |    4 ++--
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+--- a/gdb/ChangeLog
++++ b/gdb/ChangeLog
+@@ -1,3 +1,7 @@
++2020-12-22  Shahab Vahedi  <shahab@synopsys.com>
++
++	* arc-linux-tdep.c: Replace "regnum" with "REGNUM" in comments.
++
+ 2020-12-22  Anton Kolesov  <anton.kolesov@synopsys.com>
+ 
+ 	* Makefile.in (ALLDEPFILES): Add arc-linux-nat.c.
+--- a/gdb/arc-linux-tdep.c
++++ b/gdb/arc-linux-tdep.c
+@@ -557,7 +557,7 @@
+ 
+   const bfd_byte *buf = (const bfd_byte *) gregs;
+ 
+-  /* regnum == -1 means writing all the registers.  */
++  /* REGNUM == -1 means writing all the registers.  */
+   if (regnum == -1)
+     for (int reg = 0; reg <= ARC_LAST_REGNUM; reg++)
+       supply_register (regcache, reg, buf);
+@@ -621,7 +621,7 @@
+   gdb_byte *buf = (gdb_byte *) gregs;
+   struct gdbarch *gdbarch = regcache->arch ();
+ 
+-  /* regnum == -1 means writing all the registers.  */
++  /* REGNUM == -1 means writing all the registers.  */
+   if (regnum == -1)
+     for (int reg = 0; reg <= ARC_LAST_REGNUM; reg++)
+       collect_register (regcache, gdbarch, reg, buf);