diff options
Diffstat (limited to 'compiler/rustc_codegen_llvm')
| -rw-r--r-- | compiler/rustc_codegen_llvm/Cargo.toml | 2 | ||||
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/builder.rs | 26 | ||||
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/declare.rs | 8 | ||||
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/type_.rs | 30 |
4 files changed, 38 insertions, 28 deletions
diff --git a/compiler/rustc_codegen_llvm/Cargo.toml b/compiler/rustc_codegen_llvm/Cargo.toml index d8fbd0a84fb..f9a5463efcd 100644 --- a/compiler/rustc_codegen_llvm/Cargo.toml +++ b/compiler/rustc_codegen_llvm/Cargo.toml @@ -18,7 +18,6 @@ rustc_middle = { path = "../rustc_middle" } rustc-demangle = "0.1.21" rustc_attr = { path = "../rustc_attr" } rustc_codegen_ssa = { path = "../rustc_codegen_ssa" } -rustc_symbol_mangling = { path = "../rustc_symbol_mangling" } rustc_data_structures = { path = "../rustc_data_structures" } rustc_errors = { path = "../rustc_errors" } rustc_fs_util = { path = "../rustc_fs_util" } @@ -30,6 +29,7 @@ rustc_metadata = { path = "../rustc_metadata" } rustc_query_system = { path = "../rustc_query_system" } rustc_session = { path = "../rustc_session" } rustc_serialize = { path = "../rustc_serialize" } +rustc_symbol_mangling = { path = "../rustc_symbol_mangling" } rustc_target = { path = "../rustc_target" } smallvec = { version = "1.8.1", features = ["union", "may_dangle"] } rustc_ast = { path = "../rustc_ast" } diff --git a/compiler/rustc_codegen_llvm/src/builder.rs b/compiler/rustc_codegen_llvm/src/builder.rs index 4a4cccb490d..d3096c73a8a 100644 --- a/compiler/rustc_codegen_llvm/src/builder.rs +++ b/compiler/rustc_codegen_llvm/src/builder.rs @@ -626,32 +626,6 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> { } } - fn type_metadata(&mut self, function: &'ll Value, typeid: String) { - let typeid_metadata = self.typeid_metadata(typeid); - let v = [self.const_usize(0), typeid_metadata]; - unsafe { - llvm::LLVMGlobalSetMetadata( - function, - llvm::MD_type as c_uint, - llvm::LLVMValueAsMetadata(llvm::LLVMMDNodeInContext( - self.cx.llcx, - v.as_ptr(), - v.len() as c_uint, - )), - ) - } - } - - fn typeid_metadata(&mut self, typeid: String) -> Self::Value { - unsafe { - llvm::LLVMMDStringInContext( - self.cx.llcx, - typeid.as_ptr() as *const c_char, - typeid.as_bytes().len() as c_uint, - ) - } - } - fn store(&mut self, val: &'ll Value, ptr: &'ll Value, align: Align) -> &'ll Value { self.store_with_flags(val, ptr, align, MemFlags::empty()) } diff --git a/compiler/rustc_codegen_llvm/src/declare.rs b/compiler/rustc_codegen_llvm/src/declare.rs index 5a5c4f7f860..fa0ecd18fc8 100644 --- a/compiler/rustc_codegen_llvm/src/declare.rs +++ b/compiler/rustc_codegen_llvm/src/declare.rs @@ -18,7 +18,9 @@ use crate::llvm; use crate::llvm::AttributePlace::Function; use crate::type_::Type; use crate::value::Value; +use rustc_codegen_ssa::traits::TypeMembershipMethods; use rustc_middle::ty::Ty; +use rustc_symbol_mangling::typeid::typeid_for_fnabi; use smallvec::SmallVec; use tracing::debug; @@ -97,6 +99,12 @@ impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> { fn_abi.llvm_type(self), ); fn_abi.apply_attrs_llfn(self, llfn); + + if self.tcx.sess.is_sanitizer_cfi_enabled() { + let typeid = typeid_for_fnabi(self.tcx, fn_abi); + self.set_type_metadata(llfn, typeid); + } + llfn } diff --git a/compiler/rustc_codegen_llvm/src/type_.rs b/compiler/rustc_codegen_llvm/src/type_.rs index cf2d3c423c3..eeb38d4ecf5 100644 --- a/compiler/rustc_codegen_llvm/src/type_.rs +++ b/compiler/rustc_codegen_llvm/src/type_.rs @@ -19,7 +19,7 @@ use rustc_target::abi::{AddressSpace, Align, Integer, Size}; use std::fmt; use std::ptr; -use libc::c_uint; +use libc::{c_char, c_uint}; impl PartialEq for Type { fn eq(&self, other: &Self) -> bool { @@ -289,3 +289,31 @@ impl<'ll, 'tcx> LayoutTypeMethods<'tcx> for CodegenCx<'ll, 'tcx> { ty.llvm_type(self) } } + +impl<'ll, 'tcx> TypeMembershipMethods<'tcx> for CodegenCx<'ll, 'tcx> { + fn set_type_metadata(&self, function: &'ll Value, typeid: String) { + let typeid_metadata = self.typeid_metadata(typeid); + let v = [self.const_usize(0), typeid_metadata]; + unsafe { + llvm::LLVMGlobalSetMetadata( + function, + llvm::MD_type as c_uint, + llvm::LLVMValueAsMetadata(llvm::LLVMMDNodeInContext( + self.llcx, + v.as_ptr(), + v.len() as c_uint, + )), + ) + } + } + + fn typeid_metadata(&self, typeid: String) -> &'ll Value { + unsafe { + llvm::LLVMMDStringInContext( + self.llcx, + typeid.as_ptr() as *const c_char, + typeid.len() as c_uint, + ) + } + } +} |
