This patch adds build loongarch-linux-user target support.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 meson.build                  |  2 +-
 target/loongarch/meson.build | 19 +++++++++++++++++++
 target/meson.build           |  1 +
 3 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 target/loongarch/meson.build

diff --git a/meson.build b/meson.build
index d03fec6..7ba3aeb 100644
--- a/meson.build
+++ b/meson.build
@@ -56,7 +56,7 @@ python = import('python').find_installation()
 
 supported_oses = ['windows', 'freebsd', 'netbsd', 'openbsd', 'darwin', 'sunos', 'linux']
 supported_cpus = ['ppc', 'ppc64', 's390x', 'riscv', 'x86', 'x86_64',
-  'arm', 'aarch64', 'mips', 'mips64', 'sparc', 'sparc64']
+  'arm', 'aarch64', 'mips', 'mips64', 'sparc', 'sparc64', 'loongarch64']
 
 cpu = host_machine.cpu_family()
 
diff --git a/target/loongarch/meson.build b/target/loongarch/meson.build
new file mode 100644
index 0000000..bcb076e
--- /dev/null
+++ b/target/loongarch/meson.build
@@ -0,0 +1,19 @@
+gen = decodetree.process('insns.decode')
+
+loongarch_ss = ss.source_set()
+loongarch_ss.add(files(
+  'cpu.c',
+  'disas.c',
+))
+loongarch_tcg_ss = ss.source_set()
+loongarch_tcg_ss.add(gen)
+loongarch_tcg_ss.add(files(
+  'fpu_helper.c',
+  'op_helper.c',
+  'translate.c',
+))
+loongarch_tcg_ss.add(zlib)
+
+loongarch_ss.add_all(when: 'CONFIG_TCG', if_true: [loongarch_tcg_ss])
+
+target_arch += {'loongarch': loongarch_ss}
diff --git a/target/meson.build b/target/meson.build
index 2f69402..a53a604 100644
--- a/target/meson.build
+++ b/target/meson.build
@@ -5,6 +5,7 @@ subdir('cris')
 subdir('hexagon')
 subdir('hppa')
 subdir('i386')
+subdir('loongarch')
 subdir('m68k')
 subdir('microblaze')
 subdir('mips')
-- 
1.8.3.1