1 files changed, 83 insertions, 0 deletions
diff --git a/usr.bin/oemu/include/oemu/cpu.h b/usr.bin/oemu/include/oemu/cpu.h
new file mode 100644
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+++ b/usr.bin/oemu/include/oemu/cpu.h
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+/*
+ * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of Hyra 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 COPYRIGHT OWNER OR CONTRIBUTORS 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 _OEMU_CPU_H_
+#define _OEMU_CPU_H_
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <oemu/types.h>
+
+#define MEMORY_SIZE 512
+
+/*
+ * Processor state register
+ */
+#define CPU_SRS_SV      BIT(1)  /* Supervisor flag */
+#define CPU_SRS_CARRY   BIT(2)  /* Carry flag */
+
+/*
+ * System memory
+ *
+ * @mem: Data
+ * @mem_size: Memory size max
+ */
+struct sysmem {
+    void *mem;
+    size_t mem_size;
+};
+
+/*
+ * CPU register state
+ *
+ * @xreg: X<n>
+ * @ip: Instruction pointer
+ * @sr_state: Processor state register
+ * @blr: Branch link register
+ * @ilr: Interrupt link register
+ */
+struct cpu_regs {
+    reg_t xreg[16];
+    reg_t ip;
+    reg_t sr_state;
+    reg_t blr;
+    reg_t ilr;
+};
+
+struct oemu_cpu {
+    struct cpu_regs regs;
+};
+
+void cpu_regdump(struct oemu_cpu *cpu);
+void cpu_reset(struct oemu_cpu *cpu);
+void cpu_kick(struct oemu_cpu *cpu, struct sysmem *mem);
+
+#endif  /* !_OEMU_CPU_H_ */