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-rw-r--r--src/lib.rs19
-rw-r--r--src/long_mode/mod.rs75
-rw-r--r--src/protected_mode/mod.rs75
-rw-r--r--src/real_mode/mod.rs74
4 files changed, 149 insertions, 94 deletions
diff --git a/src/lib.rs b/src/lib.rs
index b8bd4f7..9825fd2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,6 +12,7 @@
//!
//! let inst = decoder.decode_slice(&[0x33, 0xc0]).unwrap();
//!
+//! #[cfg(features="fmt")]
//! assert_eq!("xor eax, eax", inst.to_string());
//! ```
//!
@@ -31,13 +32,16 @@
//!
//! let inst = decoder.decode_slice(&[0x33, 0x01]).unwrap();
//!
+//! #[cfg(features="fmt")]
//! assert_eq!("xor eax, dword [rcx]", inst.to_string());
//!
//! assert_eq!(Operand::Register(RegSpec::eax()), inst.operand(0));
+//! #[cfg(features="fmt")]
//! assert_eq!("eax", inst.operand(0).to_string());
//! assert_eq!(Operand::RegDeref(RegSpec::rcx()), inst.operand(1));
//!
//! // an operand in isolation does not know the size of memory it references, if any
+//! #[cfg(features="fmt")]
//! assert_eq!("[rcx]", inst.operand(1).to_string());
//!
//! // and for memory operands, the size must be read from the instruction itself:
@@ -45,6 +49,7 @@
//! assert_eq!("dword", mem_size.size_name());
//!
//! // `MemoryAccessSize::size_name()` is how its `Display` impl works, as well:
+//! #[cfg(features="fmt")]
//! assert_eq!("dword", mem_size.to_string());
//! ```
//!
@@ -54,12 +59,23 @@
//! mod decoder {
//! use yaxpeax_arch::{Arch, AddressDisplay, Decoder, Reader, ReaderBuilder};
//!
+//! // have to play some games so this example works right even without `fmt` enabled!
+//! #[cfg(feature="fmt")]
+//! trait InstBound: std::fmt::Display {}
+//! #[cfg(not(feature="fmt"))]
+//! trait InstBound {}
+//!
+//! #[cfg(feature="fmt")]
+//! impl <T: std::fmt::Display> InstBound for T {}
+//! #[cfg(not(feature="fmt"))]
+//! impl <T> InstBound for T {}
+//!
//! pub fn decode_stream<
//! 'data,
//! A: yaxpeax_arch::Arch,
//! U: ReaderBuilder<A::Address, A::Word>,
//! >(data: U) where
-//! A::Instruction: std::fmt::Display,
+//! A::Instruction: InstBound,
//! {
//! let mut reader = ReaderBuilder::read_from(data);
//! let mut address: A::Address = reader.total_offset();
@@ -69,6 +85,7 @@
//! loop {
//! match decode_res {
//! Ok(ref inst) => {
+//! #[cfg(feature="fmt")]
//! println!("{}: {}", address.show(), inst);
//! decode_res = decoder.decode(&mut reader);
//! address = reader.total_offset();
diff --git a/src/long_mode/mod.rs b/src/long_mode/mod.rs
index d2cb2f7..6475d4e 100644
--- a/src/long_mode/mod.rs
+++ b/src/long_mode/mod.rs
@@ -888,11 +888,13 @@ const REGISTER_CLASS_NAMES: &[&'static str] = &[
/// }
///
/// if let Operand::Register(regspec) = instruction.operand(0) {
+/// #[cfg(feature="fmt")]
/// println!("first operand is {}", regspec);
/// show_register_class_info(regspec.class());
/// }
///
/// if let Operand::Register(regspec) = instruction.operand(1) {
+/// #[cfg(feature="fmt")]
/// println!("first operand is {}", regspec);
/// show_register_class_info(regspec.class());
/// }
@@ -7422,43 +7424,54 @@ impl InnerDescription {
}
}
-impl fmt::Display for InnerDescription {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
- InnerDescription::RexPrefix(bits) => {
- write!(f, "rex prefix: {}{}{}{}",
- if bits & 0x8 != 0 { "w" } else { "-" },
- if bits & 0x4 != 0 { "r" } else { "-" },
- if bits & 0x2 != 0 { "x" } else { "-" },
- if bits & 0x1 != 0 { "b" } else { "-" },
- )
- }
- InnerDescription::SegmentPrefix(segment) => {
- write!(f, "segment override: {}", segment)
- }
- InnerDescription::Misc(text) => {
- f.write_str(text)
- }
- InnerDescription::Number(text, num) => {
- write!(f, "{}: {:#x}", text, num)
- }
- InnerDescription::Opcode(opc) => {
- write!(f, "opcode `{}`", opc)
- }
- InnerDescription::OperandCode(OperandCodeWrapper { code }) => {
- write!(f, "operand code `{:?}`", code)
- }
- InnerDescription::RegisterNumber(name, num, reg) => {
- write!(f, "`{}` (`{}` selects register number {})", reg, name, num)
+cfg_if::cfg_if! {
+ if #[cfg(feature="fmt")] {
+ impl fmt::Display for InnerDescription {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ match self {
+ InnerDescription::RexPrefix(bits) => {
+ write!(f, "rex prefix: {}{}{}{}",
+ if bits & 0x8 != 0 { "w" } else { "-" },
+ if bits & 0x4 != 0 { "r" } else { "-" },
+ if bits & 0x2 != 0 { "x" } else { "-" },
+ if bits & 0x1 != 0 { "b" } else { "-" },
+ )
+ }
+ InnerDescription::SegmentPrefix(segment) => {
+ write!(f, "segment override: {}", segment)
+ }
+ InnerDescription::Misc(text) => {
+ f.write_str(text)
+ }
+ InnerDescription::Number(text, num) => {
+ write!(f, "{}: {:#x}", text, num)
+ }
+ InnerDescription::Opcode(opc) => {
+ write!(f, "opcode `{}`", opc)
+ }
+ InnerDescription::OperandCode(OperandCodeWrapper { code }) => {
+ write!(f, "operand code `{:?}`", code)
+ }
+ InnerDescription::RegisterNumber(name, num, reg) => {
+ write!(f, "`{}` (`{}` selects register number {})", reg, name, num)
+ }
+ InnerDescription::Boundary(desc) => {
+ write!(f, "{}", desc)
+ }
+ }
}
- InnerDescription::Boundary(desc) => {
- write!(f, "{}", desc)
+ }
+ } else {
+ impl fmt::Display for InnerDescription {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.write_str("non-fmt build")
}
}
}
}
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[cfg_attr(feature="fmt", derive(Debug))]
+#[derive(Clone, PartialEq, Eq)]
pub struct FieldDescription {
desc: InnerDescription,
id: u32,
diff --git a/src/protected_mode/mod.rs b/src/protected_mode/mod.rs
index 0a6fcf8..dd63d32 100644
--- a/src/protected_mode/mod.rs
+++ b/src/protected_mode/mod.rs
@@ -833,11 +833,13 @@ const REGISTER_CLASS_NAMES: &[&'static str] = &[
/// }
///
/// if let Operand::Register(regspec) = instruction.operand(0) {
+/// #[cfg(feature="fmt")]
/// println!("first operand is {}", regspec);
/// show_register_class_info(regspec.class());
/// }
///
/// if let Operand::Register(regspec) = instruction.operand(1) {
+/// #[cfg(feature="fmt")]
/// println!("first operand is {}", regspec);
/// show_register_class_info(regspec.class());
/// }
@@ -7386,7 +7388,8 @@ fn read_0f3a_opcode(opcode: u8, prefixes: &mut Prefixes) -> OpcodeRecord {
};
}
-/// the actual description for a selection of bits involved in decoding an [`long_mode::Instruction`].
+/// the actual description for a selection of bits involved in decoding a
+/// [`protected_mode::Instruction`].
///
/// some prefixes are only identified as an `InnerDescription::Misc` string, while some are full
/// `InnerDescription::SegmentPrefix(Segment)`. generally, strings should be considered unstable
@@ -7439,37 +7442,47 @@ impl InnerDescription {
}
}
-impl fmt::Display for InnerDescription {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
- InnerDescription::RexPrefix(bits) => {
- write!(f, "rex prefix: {}{}{}{}",
- if bits & 0x8 != 0 { "w" } else { "-" },
- if bits & 0x4 != 0 { "r" } else { "-" },
- if bits & 0x2 != 0 { "x" } else { "-" },
- if bits & 0x1 != 0 { "b" } else { "-" },
- )
- }
- InnerDescription::SegmentPrefix(segment) => {
- write!(f, "segment override: {}", segment)
- }
- InnerDescription::Misc(text) => {
- f.write_str(text)
- }
- InnerDescription::Number(text, num) => {
- write!(f, "{}: {:#x}", text, num)
- }
- InnerDescription::Opcode(opc) => {
- write!(f, "opcode `{}`", opc)
- }
- InnerDescription::OperandCode(OperandCodeWrapper { code }) => {
- write!(f, "operand code `{:?}`", code)
- }
- InnerDescription::RegisterNumber(name, num, reg) => {
- write!(f, "`{}` (`{}` selects register number {})", reg, name, num)
+cfg_if::cfg_if! {
+ if #[cfg(feature = "fmt")] {
+ impl fmt::Display for InnerDescription {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ match self {
+ InnerDescription::RexPrefix(bits) => {
+ write!(f, "rex prefix: {}{}{}{}",
+ if bits & 0x8 != 0 { "w" } else { "-" },
+ if bits & 0x4 != 0 { "r" } else { "-" },
+ if bits & 0x2 != 0 { "x" } else { "-" },
+ if bits & 0x1 != 0 { "b" } else { "-" },
+ )
+ }
+ InnerDescription::SegmentPrefix(segment) => {
+ write!(f, "segment override: {}", segment)
+ }
+ InnerDescription::Misc(text) => {
+ f.write_str(text)
+ }
+ InnerDescription::Number(text, num) => {
+ write!(f, "{}: {:#x}", text, num)
+ }
+ InnerDescription::Opcode(opc) => {
+ write!(f, "opcode `{}`", opc)
+ }
+ InnerDescription::OperandCode(OperandCodeWrapper { code }) => {
+ write!(f, "operand code `{:?}`", code)
+ }
+ InnerDescription::RegisterNumber(name, num, reg) => {
+ write!(f, "`{}` (`{}` selects register number {})", reg, name, num)
+ }
+ InnerDescription::Boundary(desc) => {
+ write!(f, "{}", desc)
+ }
+ }
}
- InnerDescription::Boundary(desc) => {
- write!(f, "{}", desc)
+ }
+ } else {
+ impl fmt::Display for InnerDescription {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.write_str("non-fmt build")
}
}
}
diff --git a/src/real_mode/mod.rs b/src/real_mode/mod.rs
index 4b8ad6d..d7fda17 100644
--- a/src/real_mode/mod.rs
+++ b/src/real_mode/mod.rs
@@ -833,11 +833,13 @@ const REGISTER_CLASS_NAMES: &[&'static str] = &[
/// }
///
/// if let Operand::Register(regspec) = instruction.operand(0) {
+/// #[cfg(feature="fmt")]
/// println!("first operand is {}", regspec);
/// show_register_class_info(regspec.class());
/// }
///
/// if let Operand::Register(regspec) = instruction.operand(1) {
+/// #[cfg(feature="fmt")]
/// println!("first operand is {}", regspec);
/// show_register_class_info(regspec.class());
/// }
@@ -7388,7 +7390,7 @@ fn read_0f3a_opcode(opcode: u8, prefixes: &mut Prefixes) -> OpcodeRecord {
};
}
-/// the actual description for a selection of bits involved in decoding an [`long_mode::Instruction`].
+/// the actual description for a selection of bits involved in decoding a [`real_mode::Instruction`].
///
/// some prefixes are only identified as an `InnerDescription::Misc` string, while some are full
/// `InnerDescription::SegmentPrefix(Segment)`. generally, strings should be considered unstable
@@ -7441,37 +7443,47 @@ impl InnerDescription {
}
}
-impl fmt::Display for InnerDescription {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match self {
- InnerDescription::RexPrefix(bits) => {
- write!(f, "rex prefix: {}{}{}{}",
- if bits & 0x8 != 0 { "w" } else { "-" },
- if bits & 0x4 != 0 { "r" } else { "-" },
- if bits & 0x2 != 0 { "x" } else { "-" },
- if bits & 0x1 != 0 { "b" } else { "-" },
- )
- }
- InnerDescription::SegmentPrefix(segment) => {
- write!(f, "segment override: {}", segment)
- }
- InnerDescription::Misc(text) => {
- f.write_str(text)
- }
- InnerDescription::Number(text, num) => {
- write!(f, "{}: {:#x}", text, num)
- }
- InnerDescription::Opcode(opc) => {
- write!(f, "opcode `{}`", opc)
- }
- InnerDescription::OperandCode(OperandCodeWrapper { code }) => {
- write!(f, "operand code `{:?}`", code)
- }
- InnerDescription::RegisterNumber(name, num, reg) => {
- write!(f, "`{}` (`{}` selects register number {})", reg, name, num)
+cfg_if::cfg_if! {
+ if #[cfg(feature = "fmt")] {
+ impl fmt::Display for InnerDescription {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ match self {
+ InnerDescription::RexPrefix(bits) => {
+ write!(f, "rex prefix: {}{}{}{}",
+ if bits & 0x8 != 0 { "w" } else { "-" },
+ if bits & 0x4 != 0 { "r" } else { "-" },
+ if bits & 0x2 != 0 { "x" } else { "-" },
+ if bits & 0x1 != 0 { "b" } else { "-" },
+ )
+ }
+ InnerDescription::SegmentPrefix(segment) => {
+ write!(f, "segment override: {}", segment)
+ }
+ InnerDescription::Misc(text) => {
+ f.write_str(text)
+ }
+ InnerDescription::Number(text, num) => {
+ write!(f, "{}: {:#x}", text, num)
+ }
+ InnerDescription::Opcode(opc) => {
+ write!(f, "opcode `{}`", opc)
+ }
+ InnerDescription::OperandCode(OperandCodeWrapper { code }) => {
+ write!(f, "operand code `{:?}`", code)
+ }
+ InnerDescription::RegisterNumber(name, num, reg) => {
+ write!(f, "`{}` (`{}` selects register number {})", reg, name, num)
+ }
+ InnerDescription::Boundary(desc) => {
+ write!(f, "{}", desc)
+ }
+ }
}
- InnerDescription::Boundary(desc) => {
- write!(f, "{}", desc)
+ }
+ } else {
+ impl fmt::Display for InnerDescription {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.write_str("non-fmt build")
}
}
}
generated by cgit v1.1 at 2024-05-18 22:03:52 +0000