diff options
Diffstat (limited to 'usr.bin/oasm/include')
| -rw-r--r-- | usr.bin/oasm/include/oasm/emit.h | 109 | ||||
| -rw-r--r-- | usr.bin/oasm/include/oasm/lex.h | 3 |
2 files changed, 112 insertions, 0 deletions
diff --git a/usr.bin/oasm/include/oasm/emit.h b/usr.bin/oasm/include/oasm/emit.h new file mode 100644 index 0000000..e4ed83c --- /dev/null +++ b/usr.bin/oasm/include/oasm/emit.h @@ -0,0 +1,109 @@ +/* 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 _EMIT_H_ +#define _EMIT_H_ + +#include <sys/queue.h> +#include <stdint.h> +#include <stddef.h> +#include <oasm/lex.h> +#include <oasm/state.h> + +/* + * The OSMX64 architecture has 32-bit instructions + * that are encoded in the following manner: + * + * - [0:7]: Opcode + * - [11:8]: Register + * - [31:12]: Reserved + * + * The values below define various operation + * codes. + */ +#define OSMX64_NOP 0x00 /* No-operation */ +#define OSMX64_ADD 0x01 /* Add operation */ +#define OSMX64_SUB 0x02 /* Sub operation */ +#define OSMX64_MUL 0x03 /* Multiply operation */ +#define OSMX64_DIV 0x04 /* Divide operation */ +#define OSMX64_INC 0x05 /* Increment operation */ +#define OSMX64_DEC 0x06 /* Decrement operation */ +#define OSMX64_OR 0x07 /* Bitwise OR operation */ +#define OSMX64_XOR 0x08 /* Bitwise XOR operation */ +#define OSMX64_AND 0x09 /* Bitwise AND operation */ +#define OSMX64_NOT 0x10 /* Bitwise NOT operation */ +#define OSMX64_SLL 0x11 /* Shift left logical operation */ +#define OSMX64_SRL 0x12 /* Shift right logical operation */ +#define OSMX64_MOV_IMM 0x13 /* Data move operation from IMM */ + +/* + * OSMX64 register definitions + */ +#define OSMX64_R_X0 0x00 +#define OSMX64_R_X1 0x01 +#define OSMX64_R_X2 0x02 +#define OSMX64_R_X3 0x03 +#define OSMX64_R_X4 0x04 +#define OSMX64_R_X5 0x05 +#define OSMX64_R_X6 0x06 +#define OSMX64_R_X7 0x07 +#define OSMX64_R_X8 0x08 +#define OSMX64_R_X9 0x09 +#define OSMX64_R_X10 0x0A +#define OSMX64_R_X11 0x0B +#define OSMX64_R_X12 0x0C +#define OSMX64_R_X13 0x0D +#define OSMX64_R_X14 0x0E +#define OSMX64_R_X15 0x0F +#define OSMX64_R_BAD 0xFF + +typedef uint8_t reg_t; +typedef uint16_t imm_t; + +/* + * OSMX64 instruction + */ +typedef struct { + uint8_t opcode; + uint8_t rd; + uint16_t imm; +} inst_t; + +struct emit_state { + tt_t last_token; + uint8_t is_init : 1; + int out_fd; + TAILQ_HEAD(, oasm_token) ir; +}; + +int emit_init(struct emit_state *state); +int emit_destroy(struct emit_state *state); +int emit_process(struct oasm_state *oasm, struct emit_state *emit); +int emit_osxm64(struct emit_state *state, struct oasm_token *tp); + +#endif /* !_EMIT_H_ */ diff --git a/usr.bin/oasm/include/oasm/lex.h b/usr.bin/oasm/include/oasm/lex.h index 2811ca3..28ad52c 100644 --- a/usr.bin/oasm/include/oasm/lex.h +++ b/usr.bin/oasm/include/oasm/lex.h @@ -30,6 +30,8 @@ #ifndef _OASM_LEX_H_ #define _OASM_LEX_H_ +#include <sys/queue.h> +#include <sys/cdefs.h> #include <stdint.h> struct oasm_state; @@ -115,6 +117,7 @@ struct oasm_token { uint8_t is_reg : 1; uint16_t imm; char *raw; + TAILQ_ENTRY(oasm_token) link; }; int lex_tok(struct oasm_state *state, struct oasm_token *ttp); |