project: Add emux64 emulator skeleton

Signed-off-by: Ian Moffett <ian@osmora.org>

5 files changed, 123 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index 0fb8788..13ba060 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 obj_dir/
+emux64/bin/
 *.vcd
+*.o
diff --git a/emux64/.gitignore b/emux64/.gitignore
new file mode 100644
index 0000000..e660fd9
--- /dev/null
+++ b/emux64/.gitignore
@@ -0,0 +1 @@
+bin/
diff --git a/emux64/Makefile b/emux64/Makefile
new file mode 100644
index 0000000..8455235
--- /dev/null
+++ b/emux64/Makefile
@@ -0,0 +1,16 @@
+CC = gcc
+CFLAGS = -pedantic -Isrc/include/
+CFILES = $(shell find src/ -name "*.c")
+OFILES = $(CFILES:.c=.o)
+
+.PHONY: all
+all: $(OFILES)
+	mkdir -p bin/
+	$(CC) $^ $(CFLAGS) -o bin/emux
+
+%.c: %.o
+	$(CC) -c $< $(CFLAGS)
+
+.PHONY: clean
+clean:
+	rm $(OFILES)
diff --git a/emux64/src/include/cpu/cpu.h b/emux64/src/include/cpu/cpu.h
new file mode 100644
index 0000000..04b2a9f
--- /dev/null
+++ b/emux64/src/include/cpu/cpu.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 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.
+ */
+
+/*
+ * Description: Virtual CPU definitions
+ * Author: Ian Marco Moffett
+ */
+
+#ifndef CPU_CPU_H
+#define CPU_CPU_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+/*
+ * Represents a single unit of execution
+ *
+ * @xn: 64-bit X<n> registers
+ * @fn: IEEE 754 single-precision registers
+ * @dn: IEEE 754 double-precision registers
+ * @pc: Program counter
+ */
+struct osmx_core {
+    uint64_t xn[16];
+    float fn[7];
+    double dn[7];
+    uintptr_t pc;
+};
+
+/*
+ * Represents a single (virtual) CPU package,
+ * can have many cores
+ *
+ * TODO: Dynamically allocate cores
+ */
+struct osmx_cpu {
+    struct osmx_core[1];
+};
+
+#endif  /* !CPU_CPU_H */
diff --git a/emux64/src/main.c b/emux64/src/main.c
new file mode 100644
index 0000000..a9a3a7f
--- /dev/null
+++ b/emux64/src/main.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main(void)
+{
+    printf("Hello emux64!\n");
+    return 0;
+}