da03ff47f1
* Adding in the foundations for Winch `filetests` This commit adds two new crates into the Winch workspace: `filetests` and `test-macros`. The intent is to mimic the structure of Cranelift `filetests`, but in a simpler way. * Updates to documentation This commits adds a high level document to outline how to test Winch through the `winch-tools` utility. It also updates some inline documentation which gets propagated to the CLI. * Updating test-macro to use a glob instead of only a flat directory
60 lines
1.6 KiB
Rust
60 lines
1.6 KiB
Rust
//! Disassembly utilities.
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use anyhow::{bail, Result};
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use capstone::prelude::*;
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use std::fmt::Write;
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use target_lexicon::Architecture;
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use winch_codegen::TargetIsa;
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/// Disassemble and print a machine code buffer.
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pub fn disasm(bytes: &[u8], isa: &dyn TargetIsa) -> Result<Vec<String>> {
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let dis = disassembler_for(isa)?;
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let insts = dis.disasm_all(bytes, 0x0).unwrap();
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let disassembled_lines = insts
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.iter()
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.map(|i| {
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let mut line = String::new();
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write!(&mut line, "{:4x}:\t ", i.address()).unwrap();
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let mut bytes_str = String::new();
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let mut len = 0;
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for b in i.bytes() {
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write!(&mut bytes_str, "{:02x}", b).unwrap();
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len += 1;
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}
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write!(&mut line, "{:21}\t", bytes_str).unwrap();
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if len > 8 {
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write!(&mut line, "\n\t\t\t\t").unwrap();
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}
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if let Some(s) = i.mnemonic() {
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write!(&mut line, "{}\t", s).unwrap();
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}
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if let Some(s) = i.op_str() {
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write!(&mut line, "{}", s).unwrap();
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}
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line
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})
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.collect();
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Ok(disassembled_lines)
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}
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fn disassembler_for(isa: &dyn TargetIsa) -> Result<Capstone> {
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let disasm = match isa.triple().architecture {
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Architecture::X86_64 => Capstone::new()
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.x86()
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.mode(arch::x86::ArchMode::Mode64)
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.build()
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.map_err(|e| anyhow::format_err!("{}", e))?,
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_ => bail!("Unsupported ISA"),
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};
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Ok(disasm)
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}
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