Initial Commit

2026-04-11 12:52:14 +08:00
commit 349c71e4ea
6 changed files with 263 additions and 0 deletions
@@ -0,0 +1,164 @@
+#ifndef __SAGITTARIUS_INST_H_
+#define __SAGITTARIUS_INST_H_
+#include <stdint.h>
+/**
+ * Generally, an instruction is 8 bytes, with the first byte being the instruction definition, and the remaining 7 bytes being the instruction data.
+ * Some special instructions take another full 8 bytes as data.
+ */
+typedef enum SagittariusInstDef
+{
+    /**
+     * Math function have 2 operands involved.
+     * Layout:
+     * |0|1|2|3|4|5|
+     * |math2|type|operation|L reg|R reg|Dest reg|
+     */
+    math2,
+    /**
+     * Math function have 1 operand involved.
+     * Layout:
+     * |0|1|2|3|4|
+     * |math1|type|operation|L reg|Dest reg|
+     */
+    math1,
+    /**
+     * Type conversion
+     * Layout:
+     * |0|1|2|3|4
+     * |cvt|Src Reg| Src Type| Dst Reg| Dst Type|
+     */
+    cvt,
+    /**
+     * Set register to a value.
+     * Layout:
+     * |0|1|2..7|8..15(another instruction struct)|
+     * |set|length(1-8 bytes)|padding|payload|
+     */
+    set,
+    /**
+     * Move data from one register to another.
+     * Layout:
+     * |0|1|2|3|
+     * |mv|length(1-8 bytes)|Src Reg|Dest Reg|
+     *
+     */
+    mv,
+    /**
+     * Copy data from one register to another
+     * Layout:
+     * |0|1|2|3|
+     * |cp|length(1-8 bytes)|Src Reg|Dest Reg|
+     */
+    cp,
+
+    /**
+     * Save data to destination memory
+     * Layout:
+     * |0|1|2|3|
+     * |save|length(1-8 bytes)|Src Reg|Dest Mem Ptr (Reg ID)|
+     */
+    save,
+    /**
+     * Load data from target memory
+     * Layout:
+     * |0|1|2|3|
+     * |load|length(1-8 bytes)|Dest Reg|Src Mem Ptr (Reg ID)|
+     */
+    load,
+    /**
+     * Jump to target PC.
+     * Layout:
+     * |0|1|2|3/3..6|
+     * |jmp|mode selector: absolute/relative|value mode selector: register/immeidate|reg id/int32|
+     */
+    jmp,
+    /**
+     * Jump to target PC.
+     * Layout:
+     * |0|1|2|3|4/4..7|
+     * |jmp|mode selector: absolute/relative|value mode selector: register/immeidate|flag register|reg id/int32|
+     */
+    jmp_if,
+    /**
+     * Call to PC.
+     * Register Mode:
+     * Layout:
+     * |0|1|2|3|4|
+     * |call|mode selector: absolute/relative|0|register to remember|register|
+     * Immeidate Value Mode:
+     *
+     * |0|1|2|3|4..7|8..15|
+     * |call|mode selector: absolute/relative|1|register to remember|padding|uint64_t|
+     */
+    call,
+    /**
+     * Return
+     * Layout:
+     * |0|1|
+     * |ret|reg to restore (normally sp)|
+     */
+    ret,
+    /**
+     * Compare
+     * Layout:
+     *
+     * |0|1|2|3|4|5|
+     * |math2|type|operation|L reg|R reg|Dest reg|
+     */
+    cmp,
+    /**
+     * Vector Math
+     * Layout:
+     * |0|1|2|3|4|5|6|
+     * |math2|w|h|operation|L mem ptr reg|R mem ptr reg| Dest mem ptr  reg|
+     */
+    mathv,
+    /**
+     * Halt execution (Only resumeable from VM holder)
+     * Layout:
+     * |0|
+     * |halt|
+     */
+    halt,
+    /**
+     * System Call
+     * Layout:
+     * |0|1|2|
+     * |syscall|namespace reg| function id reg|
+     */
+    syscall,
+    /**
+     * Test System Call
+     * Layout:
+     * |0|1|2|3|
+     * |tsyscall|namespace reg| function id reg| result reg|
+     */
+    tsyscall,
+} SagittariusInstDef;
+typedef enum math2op
+{
+    sag_math2_add,
+    sag_math2_sub,
+    sag_math2_mul,
+    sag_math2_div,
+    sag_math2_mod,
+    sag_math2_pow,
+
+} math2op;
+typedef enum math1op{
+    sag_math1_sin,
+    sag_math1_cos,
+    sag_math1_tan,
+    sag_math1_sinh,
+    sag_math1_cosh,
+    sag_math1_tanh,
+    sag_math1_asin,
+    sag_math1_acos,
+    sag_math1_atan,
+    sag_math1_abs,
+}math1op;
+typedef struct SagittariusInst
+{
+    uint64_t data;
+} SagittariusInst;
+#endif