usr: Add initial "oasm" assembler work

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

4 files changed, 244 insertions, 0 deletions

diff --git a/usr.bin/oasm/include/oasm/lex.h b/usr.bin/oasm/include/oasm/lex.h
new file mode 100644
index 0000000..6688348
--- /dev/null
+++ b/usr.bin/oasm/include/oasm/lex.h
@@ -0,0 +1,118 @@
+/*
+ * 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 _OASM_LEX_H_
+#define _OASM_LEX_H_
+
+#include <stdint.h>
+#include <oasm/state.h>
+
+#define __XN_REGS   \
+    TT_X0,          \
+    TT_X1,          \
+    TT_X2,          \
+    TT_X3,          \
+    TT_X4,          \
+    TT_X5,          \
+    TT_X6,          \
+    TT_X7,          \
+    TT_X8,          \
+    TT_X9,          \
+    TT_X10,         \
+    TT_X11,         \
+    TT_X12,         \
+    TT_X13,         \
+    TT_X14,         \
+    TT_X15
+
+#define __FN_REGS   \
+    TT_F0,          \
+    TT_F1,          \
+    TT_F2,          \
+    TT_F3,          \
+    TT_F4,          \
+    TT_F5,          \
+    TT_F6,          \
+    TT_F7
+
+#define __DN_REGS   \
+    TT_D0,          \
+    TT_D1,          \
+    TT_D2,          \
+    TT_D3,          \
+    TT_D4,          \
+    TT_D5,          \
+    TT_D6,          \
+    TT_D7
+
+#define __VN_REGS   \
+    TT_V0,          \
+    TT_V1,          \
+    TT_V2,          \
+    TT_V3,          \
+    TT_V4,          \
+    TT_V5,          \
+    TT_V6,          \
+    TT_V7
+
+/*
+ * Token type definitions
+ */
+typedef enum {
+    TT_UNKNOWN,     /* Unknown token */
+
+    /* Arithmetic instructions */
+    TT_ADD,         /* 'add' */
+    TT_SUB,         /* 'sub' */
+    TT_MUL,         /* 'mul' */
+    TT_DIV,         /* 'div' */
+
+    /* Register ops */
+    TT_MOV,
+    TT_INC,
+    TT_DEC,
+
+    /* Register sets */
+    __XN_REGS,
+    __FN_REGS,
+    __DN_REGS,
+    __VN_REGS,
+
+    /* Symbols */
+    TT_COMMA,       /* ',' */
+} tt_t;
+
+struct oasm_token {
+    tt_t type;
+    char *raw;
+};
+
+int lex_tok(struct oasm_state *state, struct oasm_token *ttp);
+
+#endif  /* !_OASM_LEX_H_ */
diff --git a/usr.bin/oasm/include/oasm/log.h b/usr.bin/oasm/include/oasm/log.h
new file mode 100644
index 0000000..330c273
--- /dev/null
+++ b/usr.bin/oasm/include/oasm/log.h
@@ -0,0 +1,48 @@
+/*
+ * 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 _OASM_LOG_H_
+#define _OASM_LOG_H_
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <stdio.h>
+
+#define ERROR_COLOR "\033[31;40m"
+#define WARN_COLOR  "\033[35;40m"
+
+void __oasm_debug(const char *fmt, ...);
+void __oasm_err(const char *fmt, ...);
+void __oasm_warn(const char *fmt, ...);
+
+#define oasm_debug(...) __oasm_debug(__VA_ARGS__)
+#define oasm_err(...) __oasm_err(__VA_ARGS__)
+#define oasm_warn(...) __oasm_warn(__VA_ARGS__)
+
+#endif  /* !_OASM_LOG_H_ */
diff --git a/usr.bin/oasm/include/oasm/parse.h b/usr.bin/oasm/include/oasm/parse.h
new file mode 100644
index 0000000..04962e7
--- /dev/null
+++ b/usr.bin/oasm/include/oasm/parse.h
@@ -0,0 +1,37 @@
+/*
+ * 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 _OASM_PARSE_H_
+#define _OASM_PARSE_H_
+
+#include <oasm/state.h>
+
+void parse_enter(struct oasm_state *state);
+
+#endif /* !_OASM_PARSE_H_ */
diff --git a/usr.bin/oasm/include/oasm/state.h b/usr.bin/oasm/include/oasm/state.h
new file mode 100644
index 0000000..c21d877
--- /dev/null
+++ b/usr.bin/oasm/include/oasm/state.h
@@ -0,0 +1,41 @@
+/*
+ * 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 _OASM_STATE_H_
+#define _OASM_STATE_H_
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+struct oasm_state {
+    int in_fd;
+};
+
+#endif  /* !_OASM_STATE_H_ */