System API (CPU & Disassembly)

Low-level CPU information, high-precision timing, and full multi-instruction x64 disassembly using Zydis.

---

📌 Overview

The System API provides:

• CPU Information

• High-Resolution Performance Timers

• x64 Instruction Disassembly using Zydis

• Full operand breakdown: registers, memory operands, immediates, pointer operands, etc.

All functions are global inside AngelScript.

---

📘 Available Functions

🔧 CPU Information

Function	Returns	Description
string cpu_vendor()	"AuthenticAMD", "GenuineIntel"	CPU vendor ID
string cpu_brand()	"AMD Ryzen 9 7900X 12-Core Processor"	Human-readable CPU model

---

⏱ Timing

Function	Returns	Description
uint64 rdtsc()	Raw CPU timestamp counter	Fast but CPU-frequency dependent
int64 perf_time()	High-resolution performance counter	Use with perf_frequency()
int64 perf_frequency()	Ticks per second	For converting perf_time → seconds

📌 Example (timing a loop)

int64 freq = perf_frequency();
int64 t0   = perf_time();

for (uint i = 0; i < 1000000; i++) { }

int64 t1 = perf_time();
double dt_sec = double(t1 - t0) / double(freq);

log("Elapsed seconds: " + dt_sec);

---

🧩 Zydis Disassembly API

Functions

Function	Returns	Description
void zydis_disasm(const array<uint8>& in bytes, array<dictionary@>& out out_insts)	array<dictionary@>	Full decode starting at RIP=0
void zydis_disasm(const array<uint8>& in bytes, uint64 runtime_rip, array<dictionary@>& out out_insts)	array<dictionary@>	Full decode with custom RIP

Both return a list of instructions, where each item is a dictionary with metadata and operand array.

---

🧱 Instruction Structure (disasm_instruction_t)

Each instruction dictionary contains:

Key	Type	Description
"runtime_address"	int64	Instruction RIP
"length"	int64	Size in bytes
"mnemonic"	string	"mov", "push", "lea"
"text"	string	Full Intel disassembly text
"operand_count"	int64	Total operands
"operand_count_visible"	int64	Non-hidden operands
"operands"	array<dictionary@>	List of operand tables

---

🔍 Operand Structure (operand_t)

Each operand dictionary contains:

Key	Type	Example	Notes
"id"	int64	0	Operand index
"type"	string	"reg" / "mem" / "imm" / "ptr"	Operand type
"visibility"	string	"explicit" / "hidden"
"size"	int64	64	Bit size

Register operand

Key	Type	Description
"reg_name"	string	"rax", "rcx", "xmm0"

Memory operand

Key	Type	Description
"mem_segment"	string	"ss"
"mem_base"	string	"rbp"
"mem_index"	string	"rax" or ""
"mem_scale"	int64	Scale (1,2,4,8)
"mem_has_displacement"	int64 (0/1)	Whether displacement exists
"mem_displacement"	int64	Signed displacement

Immediate operand

Key	Type	Description
"imm_is_signed"	int64 (0/1)	Signed flag
"imm_is_relative"	int64 (0/1)	Is relative jump?
"imm_value"	int64	Immediate value
"imm_absolute_address"	int64	Computed RIP + relOffset

Pointer operand

Key	Type	Description
"ptr_segment"	int64
"ptr_offset"	int64

---

🚀 AngelScript Example

This example shows CPU info, timing, and full multi-instruction disassembly — the same script you used for validation.

int main()
{
    log("=== AS SYSTEM / ZYDIS FULL TEST START ===");

    // CPU info
    log("CPU Vendor: " + cpu_vendor());
    log("CPU Brand : " + cpu_brand());

    // Timing test
    int64 freq = perf_frequency();
    int64 t0   = perf_time();

    uint64 sum = 0;
    for (uint i = 0; i < 1000000; i++) sum += i;

    int64 t1 = perf_time();
    log("perf_frequency (ticks/sec): " + freq);
    log("perf_time delta seconds   : " + double(t1 - t0) / double(freq));

    log("RDTSC: " + rdtsc());

    // Example code to disassemble
    array<uint8> bytes = {
        0x55,                    // push rbp
        0x48, 0x89, 0xE5,        // mov rbp, rsp
        0x48, 0x83, 0xEC, 0x30   // sub rsp, 0x30
    };

    array<dictionary@> ins;
    zydis_disasm(bytes, 0x140000000, ins);

    log("=== ZYDIS TEST (HARDCODED BYTES) ===");
    for (uint i = 0; i < ins.length(); i++)
    {
        dictionary@ inst = ins[i];

        int64 addr; 
        inst.get("runtime_address", addr);

        string text;
        inst.get("text", text);

        log(formatInt(addr, "0x%X") + ": " + text);
    }

    log("=== AS SYSTEM / ZYDIS FULL TEST END ===");
    return 1;
}

---

🔥 Example Output

=== AS SYSTEM / ZYDIS FULL TEST START ===
CPU Vendor: AuthenticAMD
CPU Brand : AMD Ryzen 9 7900X 12-Core Processor

perf_frequency (ticks/sec): 10000000
perf_time delta seconds : 0.0094
RDTSC: 161134003150540

=== ZYDIS TEST (HARDCODED BYTES) ===
0x140000000: push rbp
0x140000001: mov rbp, rsp
0x140000004: sub rsp, 0x30

=== AS SYSTEM / ZYDIS FULL TEST END ===

---

📅 Date & Time API

Provides local date/time information, including readable names, 12-hour formatting, and Unix timestamps.

🧭 Functions

dictionary@ get_datetime()

Returns a dictionary with the following keys:

Key	Type	Description
"year"	int	e.g. 2025
"month"	int	1–12
"day"	int	1–31
"hour"	int	0–23
"minute"	int	0–59
"second"	int	0–59
"msec"	int	0–999
"day_name"	string	"Monday", "Tuesday", ...
"month_name"	string	"January", "February", ...
"hour12"	int	1–12
"ampm"	string	"AM" or "PM"

---

uint64 get_timestamp()

Returns a Unix timestamp in UTC, measured in seconds since 1970-01-01.

---

🧪 Example: Getting Time & Date

int main()
{
    dictionary@ dt = get_datetime();
    
    int year, month, day, hour12, minute;
    string dayName, monthName, ampm;
    
    dt.get("year", year);
    dt.get("month", month);
    dt.get("day", day);
    dt.get("hour12", hour12);
    dt.get("minute", minute);
    dt.get("day_name", dayName);
    dt.get("month_name", monthName);
    dt.get("ampm", ampm);
    
    log("Today is: " + dayName + ", " + monthName + " " + day + ", " + year);
    log("Local Time: " +
    hour12 +
    ":" +
    (minute < 10 ? "0" + formatInt(minute) : formatInt(minute)) +
    " " + ampm);
    
    uint64 ts = get_timestamp();
    log("Unix Timestamp: " + ts);
    return 1;
}