sass_assembler/
lib.rs

1#![warn(missing_docs)]
2
3//! SASS (Shader Assembly) assembler for NVIDIA GPUs.
4//!
5//! This crate provides utilities for assembling SASS instructions and programs.
6
7/// Instructions module
8pub mod instructions;
9/// Program module
10pub mod program;
11
12use crate::{instructions::SassInstruction, program::SassProgram};
13use gaia_types::Result;
14
15/// SASS assembler/writer
16pub struct SassWriter {}
17
18impl SassWriter {
19    /// Create a new SASS writer.
20    pub fn new() -> Self {
21        Self {}
22    }
23
24    /// Write a SASS program to bytecode.
25    ///
26    /// # Arguments
27    /// * `program` - The SASS program to write
28    ///
29    /// # Returns
30    /// SASS bytecode as bytes
31    pub fn write(&self, program: &SassProgram) -> Result<Vec<u8>> {
32        let mut code = String::new();
33        for kernel in &program.kernels {
34            code.push_str(&format!(".section .text.{}\n.global {}\n{}:\n", kernel.name, kernel.name, kernel.name));
35            for inst in &kernel.instructions {
36                code.push_str("    ");
37                code.push_str(&self.format_instruction(inst));
38                code.push('\n');
39            }
40        }
41
42        // 模拟生成二进制 (ELF Magic + 汇编内容)
43        let mut binary = Vec::from("\x7fELF".as_bytes());
44        binary.extend_from_slice(code.as_bytes());
45        Ok(binary)
46    }
47
48    /// Format a SASS instruction as string.
49    ///
50    /// # Arguments
51    /// * `inst` - The SASS instruction to format
52    ///
53    /// # Returns
54    /// Formatted instruction string
55    fn format_instruction(&self, inst: &SassInstruction) -> String {
56        match inst {
57            SassInstruction::FAdd { dst, src0, src1 } => format!("FADD {}, {}, {}", dst, src0, src1),
58            SassInstruction::FMul { dst, src0, src1 } => format!("FMUL {}, {}, {}", dst, src0, src1),
59            SassInstruction::Imma { dst, src0, src1, src2 } => {
60                format!("IMMA.16.16.16.F32 {}, {}, {}, {}", dst, src0, src1, src2)
61            }
62            SassInstruction::Ldg { dst, addr } => format!("LDG.E {}, [{}]", dst, addr),
63            SassInstruction::Stg { addr, src } => format!("STG.E [{}], {}", addr, src),
64            SassInstruction::Exit => "EXIT".to_string(),
65            SassInstruction::Nop => "NOP".to_string(),
66        }
67    }
68}
sass_assembler/lib.rs

sass_assembler/
lib.rs
