target-xtensa: add target stubs

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

5 files changed, 326 insertions, 0 deletions

diff --git a/target-xtensa/cpu.h b/target-xtensa/cpu.h
new file mode 100644
index 0000000000..a51ffc82c7
--- /dev/null
+++ b/target-xtensa/cpu.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CPU_XTENSA_H
+#define CPU_XTENSA_H
+
+#define TARGET_LONG_BITS 32
+#define ELF_MACHINE EM_XTENSA
+
+#define CPUState struct CPUXtensaState
+
+#include "config.h"
+#include "qemu-common.h"
+#include "cpu-defs.h"
+
+#define TARGET_HAS_ICE 1
+
+#define NB_MMU_MODES 4
+
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+#define TARGET_PAGE_BITS 12
+
+typedef struct CPUXtensaState {
+    uint32_t regs[16];
+    uint32_t pc;
+    uint32_t sregs[256];
+
+    CPU_COMMON
+} CPUXtensaState;
+
+#define cpu_init cpu_xtensa_init
+#define cpu_exec cpu_xtensa_exec
+#define cpu_gen_code cpu_xtensa_gen_code
+#define cpu_signal_handler cpu_xtensa_signal_handler
+#define cpu_list xtensa_cpu_list
+
+CPUXtensaState *cpu_xtensa_init(const char *cpu_model);
+void xtensa_translate_init(void);
+int cpu_xtensa_exec(CPUXtensaState *s);
+void do_interrupt(CPUXtensaState *s);
+int cpu_xtensa_signal_handler(int host_signum, void *pinfo, void *puc);
+void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf);
+
+static inline int cpu_mmu_index(CPUState *env)
+{
+    return 0;
+}
+
+static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
+        target_ulong *cs_base, int *flags)
+{
+    *pc = env->pc;
+    *cs_base = 0;
+    *flags = 0;
+}
+
+#include "cpu-all.h"
+#include "exec-all.h"
+
+static inline int cpu_has_work(CPUState *env)
+{
+    return 1;
+}
+
+static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
+{
+    env->pc = tb->pc;
+}
+
+#endif
diff --git a/target-xtensa/helper.c b/target-xtensa/helper.c
new file mode 100644
index 0000000000..dc30e00481
--- /dev/null
+++ b/target-xtensa/helper.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "cpu.h"
+#include "exec-all.h"
+#include "gdbstub.h"
+#include "qemu-common.h"
+#include "host-utils.h"
+#if !defined(CONFIG_USER_ONLY)
+#include "hw/loader.h"
+#endif
+
+void cpu_reset(CPUXtensaState *env)
+{
+    env->pc = 0;
+}
+
+CPUXtensaState *cpu_xtensa_init(const char *cpu_model)
+{
+    static int tcg_inited;
+    CPUXtensaState *env;
+
+    env = g_malloc0(sizeof(*env));
+    cpu_exec_init(env);
+
+    if (!tcg_inited) {
+        tcg_inited = 1;
+        xtensa_translate_init();
+    }
+
+    qemu_init_vcpu(env);
+    return env;
+}
+
+
+void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf)
+{
+    cpu_fprintf(f, "Available CPUs:\n"
+            "  Xtensa core\n");
+}
+
+target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
+{
+    return addr;
+}
+
+void do_interrupt(CPUState *env)
+{
+}
diff --git a/target-xtensa/machine.c b/target-xtensa/machine.c
new file mode 100644
index 0000000000..ddeffb2da4
--- /dev/null
+++ b/target-xtensa/machine.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "hw/hw.h"
+#include "hw/boards.h"
+
+void cpu_save(QEMUFile *f, void *opaque)
+{
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    return 0;
+}
diff --git a/target-xtensa/op_helper.c b/target-xtensa/op_helper.c
new file mode 100644
index 0000000000..aafa33d8bd
--- /dev/null
+++ b/target-xtensa/op_helper.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "cpu.h"
+#include "dyngen-exec.h"
+
+#define MMUSUFFIX _mmu
+
+#define SHIFT 0
+#include "softmmu_template.h"
+
+#define SHIFT 1
+#include "softmmu_template.h"
+
+#define SHIFT 2
+#include "softmmu_template.h"
+
+#define SHIFT 3
+#include "softmmu_template.h"
+
+void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
+{
+    tlb_set_page(cpu_single_env,
+            addr & ~(TARGET_PAGE_SIZE - 1),
+            addr & ~(TARGET_PAGE_SIZE - 1),
+            PAGE_READ | PAGE_WRITE | PAGE_EXEC,
+            mmu_idx, TARGET_PAGE_SIZE);
+}
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
new file mode 100644
index 0000000000..4f517d68f1
--- /dev/null
+++ b/target-xtensa/translate.c
@@ -0,0 +1,68 @@
+/*
+ * Xtensa ISA:
+ * http://www.tensilica.com/products/literature-docs/documentation/xtensa-isa-databook.htm
+ *
+ * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+
+#include "cpu.h"
+#include "exec-all.h"
+#include "disas.h"
+#include "tcg-op.h"
+#include "qemu-log.h"
+
+
+void xtensa_translate_init(void)
+{
+}
+
+void gen_intermediate_code(CPUState *env, TranslationBlock *tb)
+{
+}
+
+void gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
+{
+}
+
+void cpu_dump_state(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
+        int flags)
+{
+    int i;
+
+    cpu_fprintf(f, "PC=%08x\n", env->pc);
+
+    for (i = 0; i < 16; ++i) {
+        cpu_fprintf(f, "A%02d=%08x%c", i, env->regs[i],
+                (i % 4) == 3 ? '\n' : ' ');
+    }
+}
+
+void restore_state_to_opc(CPUState *env, TranslationBlock *tb, int pc_pos)
+{
+    env->pc = gen_opc_pc[pc_pos];
+}