From 93c53657c2289e979672ee6c4612af7e9eac109c Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Sat, 13 Mar 2021 14:19:55 -0800
Subject: split ffi crate to support distinct 16, 32, and 64-bit builds

initial work to optionally discard any instruction printing support

when using `-Z build-std` to fully remove .eh_frame, a stripped
long_mode_no_fmt .so is 61kb!
---
 ffi/src/lib.rs | 55 -------------------------------------------------------
 1 file changed, 55 deletions(-)
 delete mode 100644 ffi/src/lib.rs

(limited to 'ffi/src/lib.rs')

diff --git a/ffi/src/lib.rs b/ffi/src/lib.rs
deleted file mode 100644
index ca0bf5c..0000000
--- a/ffi/src/lib.rs
+++ /dev/null
@@ -1,55 +0,0 @@
-#![no_std]
-#![feature(lang_items)]
-
-#[panic_handler]
-#[cold]
-fn panic(_panic: &core::panic::PanicInfo) -> ! {
-    loop {}
-}
-
-#[lang = "eh_personality"] extern fn eh_personality() {}
-
-use yaxpeax_arch::{Arch, Decoder, LengthedInstruction, AddressBase};
-use yaxpeax_x86::long_mode as amd64;
-
-use core::fmt::Write;
-
-#[no_mangle]
-pub unsafe extern "C" fn yaxpeax_decode_x86_64_optimistic(data: *const u8, length: u64, inst: *mut amd64::Instruction) -> bool {
-    let inst: &mut amd64::Instruction = core::mem::transmute(inst);
-    <amd64::Arch as Arch>::Decoder::default().decode_into(inst, core::slice::from_raw_parts(data as *const u8, length as usize).iter().cloned()).is_err()
-}
-
-#[no_mangle]
-pub unsafe extern "C" fn yaxpeax_instr_length_x86_64(inst: *mut amd64::Instruction) -> usize {
-    let inst: &mut amd64::Instruction = core::mem::transmute(inst);
-    0.wrapping_offset(inst.len()).to_linear()
-}
-
-struct InstructionSink<'buf> {
-    buf: &'buf mut [u8],
-    offs: usize,
-}
-
-impl<'a> core::fmt::Write for InstructionSink<'a> {
-    fn write_str(&mut self, s: &str) -> core::fmt::Result {
-        for b in s.bytes() {
-            if self.offs < self.buf.len() {
-                self.buf[self.offs] = b;
-                self.offs += 1;
-            } else {
-                break;
-            }
-        }
-
-        Ok(())
-    }
-}
-
-#[no_mangle]
-pub unsafe extern "C" fn yaxpeax_instr_fmt(inst: *mut amd64::Instruction, text: *mut u8, len: usize) {
-    let inst: &mut amd64::Instruction = core::mem::transmute(inst);
-    let res = core::slice::from_raw_parts_mut(text, len);
-
-    write!(InstructionSink { buf: res, offs: 0 }, "{}", inst).unwrap();
-}
-- 
cgit v1.1