Auto merge of #97485 - bjorn3:new_archive_writer, r=wesleywiser

Rewrite LLVM's archive writer in Rust

This allows it to be used by other codegen backends.

Fixes https://github.com/bjorn3/rustc_codegen_cranelift/issues/1155

1 files changed, 13 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index c14e1656291..8a9392255b8 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -983,6 +983,9 @@ pub type SelfProfileBeforePassCallback =
     unsafe extern "C" fn(*mut c_void, *const c_char, *const c_char);
 pub type SelfProfileAfterPassCallback = unsafe extern "C" fn(*mut c_void);
 
+pub type GetSymbolsCallback = unsafe extern "C" fn(*mut c_void, *const c_char) -> *mut c_void;
+pub type GetSymbolsErrorCallback = unsafe extern "C" fn(*const c_char) -> *mut c_void;
+
 extern "C" {
     pub fn LLVMRustInstallFatalErrorHandler();
     pub fn LLVMRustDisableSystemDialogsOnCrash();
@@ -2474,4 +2477,14 @@ extern "C" {
     pub fn LLVMRustGetMangledName(V: &Value, out: &RustString);
 
     pub fn LLVMRustGetElementTypeArgIndex(CallSite: &Value) -> i32;
+
+    pub fn LLVMRustIsBitcode(ptr: *const u8, len: usize) -> bool;
+
+    pub fn LLVMRustGetSymbols(
+        buf_ptr: *const u8,
+        buf_len: usize,
+        state: *mut c_void,
+        callback: GetSymbolsCallback,
+        error_callback: GetSymbolsErrorCallback,
+    ) -> *mut c_void;
 }