Patchwork [v3,05/16] target-or32: Add exception support

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Submitter Jia Liu
Date June 6, 2012, 12:27 p.m.
Message ID <1338985632-29597-6-git-send-email-proljc@gmail.com>
Download mbox | patch
Permalink /patch/163368/
State New
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Jia Liu - June 6, 2012, 12:27 p.m.
Add OpenRISC exception support.

Signed-off-by: Jia Liu <proljc@gmail.com>
---
 Makefile.target               |    3 ++-
 target-openrisc/excp.c        |   27 +++++++++++++++++++++++++++
 target-openrisc/excp.h        |   28 ++++++++++++++++++++++++++++
 target-openrisc/excp_helper.c |   27 +++++++++++++++++++++++++++
 target-openrisc/helper.h      |    3 +++
 5 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 target-openrisc/excp.c
 create mode 100644 target-openrisc/excp.h
 create mode 100644 target-openrisc/excp_helper.c

Patch

diff --git a/Makefile.target b/Makefile.target
index cacbdaf..0ce85cb 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -103,7 +103,8 @@  endif
 libobj-$(TARGET_SPARC) += int32_helper.o
 libobj-$(TARGET_SPARC64) += int64_helper.o
 libobj-$(TARGET_ALPHA) += int_helper.o fpu_helper.o sys_helper.o mem_helper.o
-libobj-$(TARGET_OPENRISC) += intrpt.o intrpt_helper.o mmu.o mmu_helper.o
+libobj-$(TARGET_OPENRISC) += excp.o excp_helper.o intrpt.o intrpt_helper.o \
+                             mmu.o mmu_helper.o
 
 libobj-y += disas.o
 libobj-$(CONFIG_TCI_DIS) += tci-dis.o
diff --git a/target-openrisc/excp.c b/target-openrisc/excp.c
new file mode 100644
index 0000000..6d8c5dd
--- /dev/null
+++ b/target-openrisc/excp.c
@@ -0,0 +1,27 @@ 
+/*
+ *  OpenRISC exception.
+ *
+ *  Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
+ *
+ * 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 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 "cpu.h"
+#include "excp.h"
+
+void QEMU_NORETURN raise_exception(CPUOpenRISCState *env, uint32_t excp)
+{
+    env->exception_index = excp;
+    cpu_loop_exit(env);
+}
diff --git a/target-openrisc/excp.h b/target-openrisc/excp.h
new file mode 100644
index 0000000..885203b
--- /dev/null
+++ b/target-openrisc/excp.h
@@ -0,0 +1,28 @@ 
+/*
+ *  OpenRISC exception header.
+ *
+ *  Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
+ *
+ * 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 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/>.
+ */
+
+#ifndef QEMU_OPENRISC_EXCP_H
+#define QEMU_OPENRISC_EXCP_H
+
+#include "cpu.h"
+#include "qemu-common.h"
+
+void QEMU_NORETURN raise_exception(CPUOpenRISCState *env, uint32_t excp);
+
+#endif /* QEMU_OPENRISC_EXCP_H */
diff --git a/target-openrisc/excp_helper.c b/target-openrisc/excp_helper.c
new file mode 100644
index 0000000..c7d4110
--- /dev/null
+++ b/target-openrisc/excp_helper.c
@@ -0,0 +1,27 @@ 
+/*
+ *  OpenRISC exception helper routines
+ *
+ *  Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
+ *
+ * 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 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 "cpu.h"
+#include "helper.h"
+#include "excp.h"
+
+void HELPER(exception)(CPUOpenRISCState *env, uint32_t excp)
+{
+    raise_exception(env, excp);
+}
diff --git a/target-openrisc/helper.h b/target-openrisc/helper.h
index 16d99b6..4e2a49f 100644
--- a/target-openrisc/helper.h
+++ b/target-openrisc/helper.h
@@ -19,6 +19,9 @@ 
 
 #include "def-helper.h"
 
+/* exception */
+DEF_HELPER_FLAGS_2(exception, 0, void, env, i32)
+
 /* interrupt */
 DEF_HELPER_FLAGS_1(rfe, 0, void, env)