gdb: Bump GDB version to 12.1 (#1132)

GDB still defaults to 10.1 from the (already archived)
riscv-binutils-gdb repo. Let's bump the version to 12.1
and use the upstream git repo instead.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

Author: cmuellner

.gitmodules

@@ -17,10 +17,10 @@
 	path = newlib
 	url = https://sourceware.org/git/newlib-cygwin.git
 	branch = master
-[submodule "riscv-gdb"]
-	path = riscv-gdb
-	url = https://github.com/riscv-collab/riscv-binutils-gdb.git
-	branch = fsf-gdb-10.1-with-sim
+[submodule "gdb"]
+	path = gdb
+	url = https://sourceware.org/git/binutils-gdb.git
+	branch = gdb-12-branch
 [submodule "qemu"]
 	path = qemu
 	url = https://gitlab.com/qemu-project/qemu.git

configure

@@ -3667,7 +3667,7 @@ fi
   with_gdb_src=$with_gdb_src
 
 else
-  with_gdb_src="\$(srcdir)/riscv-gdb"
+  with_gdb_src="\$(srcdir)/gdb"
 
 fi
 

configure.ac

@@ -240,7 +240,7 @@ AX_ARG_WITH_SRC(binutils, binutils)
 AX_ARG_WITH_SRC(newlib, newlib)
 AX_ARG_WITH_SRC(glibc, glibc)
 AX_ARG_WITH_SRC(musl, musl)
-AX_ARG_WITH_SRC(gdb, riscv-gdb)
+AX_ARG_WITH_SRC(gdb, gdb)
 AX_ARG_WITH_SRC(qemu, qemu)
 AX_ARG_WITH_SRC(spike, spike)
 AX_ARG_WITH_SRC(pk, pk)