[PATCH v3 13/30] target/mips: Add simple user-mode mips_cpu_do_interrupt()

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

The #ifdef'ry hides that the user-mode implementation of
mips_cpu_do_interrupt() simply sets exception_index = EXCP_NONE.

Add this simple implementation to tcg/user/tlb_helper.c, and
the corresponding Meson machinery to build this file when user
emulation is configured.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
v2: Renamed helper.c -> tlb_helper.c (rth)
---
 target/mips/tcg/user/tlb_helper.c | 28 ++++++++++++++++++++++++++++
 target/mips/tlb_helper.c          |  5 -----
 target/mips/meson.build           |  5 +++++
 target/mips/tcg/meson.build       |  3 +++
 target/mips/tcg/user/meson.build  |  3 +++
 5 files changed, 39 insertions(+), 5 deletions(-)
 create mode 100644 target/mips/tcg/user/tlb_helper.c
 create mode 100644 target/mips/tcg/meson.build
 create mode 100644 target/mips/tcg/user/meson.build

diff --git a/target/mips/tcg/user/tlb_helper.c b/target/mips/tcg/user/tlb_helper.c
new file mode 100644
index 00000000000..453b9e9b930
--- /dev/null
+++ b/target/mips/tcg/user/tlb_helper.c
@@ -0,0 +1,28 @@
+/*
+ * MIPS TLB (Translation lookaside buffer) helpers.
+ *
+ *  Copyright (c) 2004-2005 Jocelyn Mayer
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "qemu/osdep.h"
+
+#include "cpu.h"
+#include "exec/exec-all.h"
+#include "internal.h"
+
+void mips_cpu_do_interrupt(CPUState *cs)
+{
+    cs->exception_index = EXCP_NONE;
+}
diff --git a/target/mips/tlb_helper.c b/target/mips/tlb_helper.c
index 1ffdc1f8304..78720c4d20a 100644
--- a/target/mips/tlb_helper.c
+++ b/target/mips/tlb_helper.c
@@ -965,11 +965,8 @@ static inline void set_badinstr_registers(CPUMIPSState *env)
     }
 }
 
-#endif /* !CONFIG_USER_ONLY */
-
 void mips_cpu_do_interrupt(CPUState *cs)
 {
-#if !defined(CONFIG_USER_ONLY)
     MIPSCPU *cpu = MIPS_CPU(cs);
     CPUMIPSState *env = &cpu->env;
     bool update_badinstr = 0;
@@ -1272,11 +1269,9 @@ void mips_cpu_do_interrupt(CPUState *cs)
                  env->CP0_Status, env->CP0_Cause, env->CP0_BadVAddr,
                  env->CP0_DEPC);
     }
-#endif
     cs->exception_index = EXCP_NONE;
 }
 
-#if !defined(CONFIG_USER_ONLY)
 void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra)
 {
     CPUState *cs = env_cpu(env);
diff --git a/target/mips/meson.build b/target/mips/meson.build
index 15c2f835c68..ca3cc62cf7a 100644
--- a/target/mips/meson.build
+++ b/target/mips/meson.build
@@ -6,6 +6,7 @@
   decodetree.process('tx79.decode', extra_args: '--static-decode=decode_tx79'),
 ]
 
+mips_user_ss = ss.source_set()
 mips_ss = ss.source_set()
 mips_ss.add(files(
   'cpu.c',
@@ -34,6 +35,9 @@
 ), if_false: files(
   'mxu_translate.c',
 ))
+if 'CONFIG_TCG' in config_all
+  subdir('tcg')
+endif
 
 mips_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'))
 
@@ -52,3 +56,4 @@
 
 target_arch += {'mips': mips_ss}
 target_softmmu_arch += {'mips': mips_softmmu_ss}
+target_user_arch += {'mips': mips_user_ss}
diff --git a/target/mips/tcg/meson.build b/target/mips/tcg/meson.build
new file mode 100644
index 00000000000..b74fa04303e
--- /dev/null
+++ b/target/mips/tcg/meson.build
@@ -0,0 +1,3 @@
+if have_user
+  subdir('user')
+endif
diff --git a/target/mips/tcg/user/meson.build b/target/mips/tcg/user/meson.build
new file mode 100644
index 00000000000..79badcd3217
--- /dev/null
+++ b/target/mips/tcg/user/meson.build
@@ -0,0 +1,3 @@
+mips_user_ss.add(files(
+  'tlb_helper.c',
+))
-- 
2.26.3