RISC-V changes

patches/gcc/0001-Managarm-target.patch

@@ -466,7 +466,7 @@ index f808b61be..0654906f2 100644
  	;;
 +riscv*-*-managarm*)
 +	tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"
-+	md_unwind_header=riscv/linux-unwind.h
++	# md_unwind_header=riscv/linux-unwind.h
 +	;;
  riscv*-*-freebsd*)
  	tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"

scripts/meson-clang-riscv64-managarm.cross-file

@@ -0,0 +1,23 @@
+[binaries]
+c = 'clang'
+cpp = 'clang++'
+ar = 'riscv64-managarm-ar'
+strip = 'riscv64-managarm-strip'
+pkgconfig = 'riscv64-managarm-pkg-config'
+
+[constants]
+# common args that c and cxx need
+args = ['-fdebug-default-version=4', '-target', 'riscv64-managarm', '--gcc-toolchain=_BUILD_ROOT_/tools/system-gcc']
+cxx = args + [ '-fsized-deallocation' ]
+
+[built-in options]
+c_args = args
+c_link_args = args
+cpp_args = cxx
+cpp_link_args = cxx
+
+[host_machine]
+system = 'managarm'
+cpu_family = 'riscv64'
+cpu = 'riscv64'
+endian = 'little'

scripts/meson-riscv64-managarm.cross-file

@@ -9,4 +9,5 @@ pkgconfig = 'riscv64-managarm-pkg-config'
 [host_machine]
 system = 'managarm'
 cpu_family = 'riscv64'
+cpu = 'rv64imafcv'
 endian = 'little'