网站建设任务平台,网站收录提交入口怎么做,网站建设错误要点,如何免费申请邮箱域名调试下rust 的执行流程
参考#xff1a;
认识 Cargo - Rust语言圣经(Rust Course)
新建一个hello world 程序#xff1a;
fn main() {println!(Hello, world!);
}用IDA 打开exe#xff0c;并加载符号#xff1a; 根据字符串找到主程序入口#xff1a; 双击… 调试下rust 的执行流程
参考
认识 Cargo - Rust语言圣经(Rust Course)
新建一个hello world 程序
fn main() {println!(Hello, world!);
}用IDA 打开exe并加载符号 根据字符串找到主程序入口 双击该符号然后按x快捷键查看所有的符号引用
之后跳转到对应的程序位置 PE 起始地址为140000000 读取hello,world字符的指令地址140001040 使用windbg 加载该程序并在lea 指令的位置下断点 0:000 kp# Child-SP RetAddr Call Site
00 000000e6c38ff9a8 00007ff7b2571006 hello_world!__ImageBase
01 000000e6c38ff9b0 00007ff7b257101c hello_world!__ImageBase
02 000000e6c38ff9e0 00007ff7b25736a8 hello_world!__ImageBase
03 (Inline Function) ---------------- hello_world!std::rt::lang_start_internal::closure$2(void)0xb [/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\rt.rs 148]
04 (Inline Function) ---------------- hello_world!std::panicking::try::do_call(void)0xb [/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs 502]
05 (Inline Function) ---------------- hello_world!std::panicking::try(void)0xb [/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs 466]
06 (Inline Function) ---------------- hello_world!std::panic::catch_unwind(void)0xb [/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panic.rs 142]
07 000000e6c38ffa10 00007ff7b25710ac hello_world!std::rt::lang_start_internal(void)0xb8 [/rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\rt.rs 148]
08 000000e6c38ffb10 00007ff7b258a510 hello_world!main0x2c
09 (Inline Function) ---------------- hello_world!invoke_main(void)0x22 [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl 78]
0a 000000e6c38ffb50 00007ffcc2a0257d hello_world!__scrt_common_main_seh(void)0x10c [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl 288]
0b 000000e6c38ffb90 00007ffcc39caa78 KERNEL32!BaseThreadInitThunk0x1d
0c 000000e6c38ffbc0 0000000000000000 ntdll!RtlUserThreadStart0x28
//! Runtime services
//!
//! The rt module provides a narrow set of runtime services,
//! including the global heap (exported in heap) and unwinding and
//! backtrace support. The APIs in this module are highly unstable,
//! and should be considered as private implementation details for the
//! time being.#![unstable(feature rt,reason this public module should not exist and is highly likely \to disappear,issue none
)]
#![doc(hidden)]
#![deny(unsafe_op_in_unsafe_fn)]
#![allow(unused_macros)]use crate::ffi::CString;// Re-export some of our utilities which are expected by other crates.
pub use crate::panicking::{begin_panic, panic_count};
pub use core::panicking::{panic_display, panic_fmt};use crate::sync::Once;
use crate::sys;
use crate::sys_common::thread_info;
use crate::thread::Thread;// Prints to the panic output, depending on the platform this may be:
// - the standard error output
// - some dedicated platform specific output
// - nothing (so this macro is a no-op)
macro_rules! rtprintpanic {($($t:tt)*) {if let Some(mut out) crate::sys::stdio::panic_output() {let _ crate::io::Write::write_fmt(mut out, format_args!($($t)*));}}
}macro_rules! rtabort {($($t:tt)*) {{rtprintpanic!(fatal runtime error: {}\n, format_args!($($t)*));crate::sys::abort_internal();}}
}macro_rules! rtassert {($e:expr) {if !$e {rtabort!(concat!(assertion failed: , stringify!($e)));}};
}macro_rules! rtunwrap {($ok:ident, $e:expr) {match $e {$ok(v) v,ref err {let err err.as_ref().map(drop); // map Ok/Some which might not be Debugrtabort!(concat!(unwrap failed: , stringify!($e), {:?}), err)}}};
}// One-time runtime initialization.
// Runs before main.
// SAFETY: must be called only once during runtime initialization.
// NOTE: this is not guaranteed to run, for example when Rust code is called externally.
//
// # The sigpipe parameter
//
// Since 2014, the Rust runtime on Unix has set the SIGPIPE handler to
// SIG_IGN. Applications have good reasons to want a different behavior
// though, so there is a #[unix_sigpipe ...] attribute on fn main() that
// can be used to select how SIGPIPE shall be setup (if changed at all) before
// fn main() is called. See https://github.com/rust-lang/rust/issues/97889
// for more info.
//
// The sigpipe parameter to this function gets its value via the code that
// rustc generates to invoke fn lang_start(). The reason we have sigpipe for
// all platforms and not only Unix, is because std is not allowed to have cfg
// directives as this high level. See the module docs in
// src/tools/tidy/src/pal.rs for more info. On all other platforms, sigpipe
// has a value, but its value is ignored.
//
// Even though it is an u8, it only ever has 4 values. These are documented in
// compiler/rustc_session/src/config/sigpipe.rs.
#[cfg_attr(test, allow(dead_code))]
unsafe fn init(argc: isize, argv: *const *const u8, sigpipe: u8) {unsafe {sys::init(argc, argv, sigpipe);let main_guard sys::thread::guard::init();// Next, set up the current Thread with the guard information we just// created. Note that this isnt necessary in general for new threads,// but we just do this to name the main thread and to give it correct// info about the stack bounds.let thread Thread::new(Some(rtunwrap!(Ok, CString::new(main))));thread_info::set(main_guard, thread);}
}// One-time runtime cleanup.
// Runs after main or at program exit.
// NOTE: this is not guaranteed to run, for example when the program aborts.
pub(crate) fn cleanup() {static CLEANUP: Once Once::new();CLEANUP.call_once(|| unsafe {// Flush stdout and disable buffering.crate::io::cleanup();// SAFETY: Only called once during runtime cleanup.sys::cleanup();});
}// To reduce the generated code of the new lang_start, this function is doing
// the real work.
#[cfg(not(test))]
fn lang_start_internal(main: (dyn Fn() - i32 Sync crate::panic::RefUnwindSafe),argc: isize,argv: *const *const u8,sigpipe: u8,
) - Resultisize, ! {use crate::{mem, panic};let rt_abort move |e| {mem::forget(e);rtabort!(initialization or cleanup bug);};// Guard against the code called by this function from unwinding outside of the Rust-controlled// code, which is UB. This is a requirement imposed by a combination of how the// #[langstart] attribute is implemented as well as by the implementation of the panicking// mechanism itself.//// There are a couple of instances where unwinding can begin. First is inside of the// rt::init, rt::cleanup and similar functions controlled by bstd. In those instances a// panic is a std implementation bug. A quite likely one too, as there isnt any way to// prevent std from accidentally introducing a panic to these functions. Another is from// user code from main or, more nefariously, as described in e.g. issue #86030.// SAFETY: Only called once during runtime initialization.panic::catch_unwind(move || unsafe { init(argc, argv, sigpipe) }).map_err(rt_abort)?;let ret_code panic::catch_unwind(move || panic::catch_unwind(main).unwrap_or(101) as isize).map_err(move |e| {mem::forget(e);rtabort!(drop of the panic payload panicked);});panic::catch_unwind(cleanup).map_err(rt_abort)?;ret_code
}#[cfg(not(test))]
#[lang start]
fn lang_startT: crate::process::Termination static(main: fn() - T,argc: isize,argv: *const *const u8,sigpipe: u8,
) - isize {let Ok(v) lang_start_internal(move || crate::sys_common::backtrace::__rust_begin_short_backtrace(main).report().to_i32(),argc,argv,sigpipe,);v
}其核心运行时如上
panic
看起来是利用panic 库进行一些基本的异常捕获与异常处理。
panic! 深入剖析 - Rust语言圣经(Rust Course) 实验
主动 异常
fn main() {panic!(crash and burn);
}
PS E:\learn\rust\panic_test $env:RUST_BACKTRACEfull ; cargo run releaseCompiling panic_test v0.1.0 (E:\learn\rust\panic_test)Finished dev [unoptimized debuginfo] target(s) in 0.18sRunning target\debug\panic_test.exe release
thread main panicked at src\main.rs:2:5:
crash and burn
stack backtrace:0: 0x7ff7a439709a - std::sys_common::backtrace::_print::impl$0::fmtat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:441: 0x7ff7a43a52db - core::fmt::rt::Argument::fmtat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\core\src\fmt\rt.rs:1382: 0x7ff7a43a52db - core::fmt::writeat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\core\src\fmt\mod.rs:10943: 0x7ff7a43953d1 - std::io::Write::write_fmtstd::sys::windows::stdio::Stderrat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\io\mod.rs:17144: 0x7ff7a4396e1a - std::sys_common::backtrace::_printat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:475: 0x7ff7a4396e1a - std::sys_common::backtrace::printat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:346: 0x7ff7a4398e4a - std::panicking::default_hook::closure$1at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:2707: 0x7ff7a4398ab8 - std::panicking::default_hookat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:2908: 0x7ff7a43994fe - std::panicking::rust_panic_with_hookat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:7079: 0x7ff7a43993aa - std::panicking::begin_panic_handler::closure$0at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:59710: 0x7ff7a4397a89 - std::sys_common::backtrace::__rust_end_short_backtracestd::panicking::begin_panic_handler::closure_env$0,never$at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:170 11: 0x7ff7a43990f0 - std::panicking::begin_panic_handlerat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:59512: 0x7ff7a43aa235 - core::panicking::panic_fmtat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\core\src\panicking.rs:6713: 0x7ff7a43910a1 - panic_test::mainat E:\learn\rust\panic_test\src\main.rs:214: 0x7ff7a439123b - core::ops::function::FnOnce::call_oncevoid (*)(),tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\core\src\ops\function.rs:25015: 0x7ff7a439119e - std::sys_common::backtrace::__rust_begin_short_backtracevoid (*)(),tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\sys_common\backtrace.rs:154 16: 0x7ff7a439119e - std::sys_common::backtrace::__rust_begin_short_backtracevoid (*)(),tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\sys_common\backtrace.rs:154 17: 0x7ff7a4391061 - std::rt::lang_start::closure$0tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\rt.rs:16618: 0x7ff7a4393558 - std::rt::lang_start_internal::closure$2at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\rt.rs:14819: 0x7ff7a4393558 - std::panicking::try::do_callat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:50220: 0x7ff7a4393558 - std::panicking::tryat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:46621: 0x7ff7a4393558 - std::panic::catch_unwindat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panic.rs:14222: 0x7ff7a4393558 - std::rt::lang_start_internalat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\rt.rs:14823: 0x7ff7a439103a - std::rt::lang_starttuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\rt.rs:16524: 0x7ff7a43910c9 - main25: 0x7ff7a43a8c80 - invoke_mainat D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:7826: 0x7ff7a43a8c80 - __scrt_common_main_sehat D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:28827: 0x7ffcc2a0257d - BaseThreadInitThunk28: 0x7ffcc39caa78 - RtlUserThreadStart
error: process didnt exit successfully: target\debug\panic_test.exe release (exit code: 101)
被动 异常
fn main() {let v vec![1, 2, 3];v[99];
}
PS E:\learn\rust\panic_test $env:RUST_BACKTRACEfull ; cargo run releaseFinished dev [unoptimized debuginfo] target(s) in 0.00sRunning target\debug\panic_test.exe release
thread main panicked at src\main.rs:4:6:
index out of bounds: the len is 3 but the index is 99
stack backtrace:0: 0x7ff75aca794a - std::sys_common::backtrace::_print::impl$0::fmtat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:441: 0x7ff75acb5c1b - core::fmt::rt::Argument::fmtat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\core\src\fmt\rt.rs:1382: 0x7ff75acb5c1b - core::fmt::writeat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\core\src\fmt\mod.rs:10943: 0x7ff75aca5c81 - std::io::Write::write_fmtstd::sys::windows::stdio::Stderrat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\io\mod.rs:17144: 0x7ff75aca76ca - std::sys_common::backtrace::_printat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:475: 0x7ff75aca76ca - std::sys_common::backtrace::printat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:346: 0x7ff75aca978a - std::panicking::default_hook::closure$1at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:2707: 0x7ff75aca93f8 - std::panicking::default_hookat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:2908: 0x7ff75aca9e3e - std::panicking::rust_panic_with_hookat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:7079: 0x7ff75aca9d2d - std::panicking::begin_panic_handler::closure$0at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:59910: 0x7ff75aca8339 - std::sys_common::backtrace::__rust_end_short_backtracestd::panicking::begin_panic_handler::closure_env$0,never$at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\sys_common\backtrace.rs:170 11: 0x7ff75aca9a30 - std::panicking::begin_panic_handlerat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:59512: 0x7ff75acbab75 - core::panicking::panic_fmtat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\core\src\panicking.rs:6713: 0x7ff75acbacee - core::panicking::panic_bounds_checkat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\core\src\panicking.rs:16214: 0x7ff75aca1afd - core::slice::index::impl$2::indexi32at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\core\src\slice\index.rs:26115: 0x7ff75aca1076 - alloc::vec::impl$12::indexi32,usize,alloc::alloc::Globalat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\alloc\src\vec\mod.rs:267516: 0x7ff75aca1366 - panic_test::mainat E:\learn\rust\panic_test\src\main.rs:417: 0x7ff75aca14ab - core::ops::function::FnOnce::call_oncevoid (*)(),tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\core\src\ops\function.rs:25018: 0x7ff75aca13de - std::sys_common::backtrace::__rust_begin_short_backtracevoid (*)(),tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\sys_common\backtrace.rs:154 19: 0x7ff75aca13de - std::sys_common::backtrace::__rust_begin_short_backtracevoid (*)(),tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\sys_common\backtrace.rs:154 20: 0x7ff75aca12e1 - std::rt::lang_start::closure$0tuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\rt.rs:16621: 0x7ff75aca3e08 - std::rt::lang_start_internal::closure$2at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\rt.rs:14822: 0x7ff75aca3e08 - std::panicking::try::do_callat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:50223: 0x7ff75aca3e08 - std::panicking::tryat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panicking.rs:46624: 0x7ff75aca3e08 - std::panic::catch_unwindat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\panic.rs:14225: 0x7ff75aca3e08 - std::rt::lang_start_internalat /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library\std\src\rt.rs:14826: 0x7ff75aca12ba - std::rt::lang_starttuple$ at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33\library\std\src\rt.rs:16527: 0x7ff75aca13c9 - main28: 0x7ff75acb95c0 - invoke_mainat D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:7829: 0x7ff75acb95c0 - __scrt_common_main_sehat D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:28830: 0x7ffcc2a0257d - BaseThreadInitThunk31: 0x7ffcc39caa78 - RtlUserThreadStart
error: process didnt exit successfully: target\debug\panic_test.exe release (exit code: 101)
可以看到包括我们用windbg 看到的比较完整的js 运行时的入口都看到了 rust 程序main 入口前就已经安装了一个默认的panic handler 用来打印一些全局的错误信息和堆栈列表。 rt.rs 详解 int __cdecl main(int argc, const char **argv, const char **envp)
{char v4; // [rsp20h] [rbp-18h]__int64 (__fastcall *v5)(); // [rsp30h] [rbp-8h] BYREFv5 sub_140001040;v4 0;return std::rt::lang_start_internal::h8a2184178aa988dc(v5, off_14001D360, argc, argv, v4);
}
其中sub_140001040 即为main 函数 __int64 sub_140001040()
{__int64 v1[3]; // [rsp28h] [rbp-30h] BYREF__int128 v2; // [rsp40h] [rbp-18h]v1[0] (__int64)off_14001D3A0;v1[1] 1i64;v1[2] (__int64)called Option::unwrap() on a None value;v2 0i64;return std::io::stdio::_print::h445fdab5382e0576(v1);
}
