bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Add a new ABI to support cmse_nonsecure_call

Browse source 
This commit adds a new ABI to be selected via `extern
"C-cmse-nonsecure-call"` on function pointers in order for the compiler to
apply the corresponding cmse_nonsecure_call callsite attribute.
For Armv8-M targets supporting TrustZone-M, this will perform a
non-secure function call by saving, clearing and calling a non-secure
function pointer using the BLXNS instruction.

See the page on the unstable book for details.

Signed-off-by: Hugues de Valon <hugues.devalon@arm.com>
This commit is contained in:
Hugues de Valon 2021-01-24 17:15:05 +00:00
parent d60b29d1ae
commit ce9818f2b7
35 changed files with 251 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

1
compiler/rustc_codegen_llvm/src/llvm/ffi.rs
View file

@ -1100,6 +1100,7 @@ extern "C" {
// Operations on call sites
pub fn LLVMSetInstructionCallConv(Instr: &Value, CC: c_uint);
pub fn LLVMRustAddCallSiteAttribute(Instr: &Value, index: c_uint, attr: Attribute);
pub fn LLVMRustAddCallSiteAttrString(Instr: &Value, index: c_uint, Name: *const c_char);
pub fn LLVMRustAddAlignmentCallSiteAttr(Instr: &Value, index: c_uint, bytes: u32);
pub fn LLVMRustAddDereferenceableCallSiteAttr(Instr: &Value, index: c_uint, bytes: u64);
pub fn LLVMRustAddDereferenceableOrNullCallSiteAttr(Instr: &Value, index: c_uint, bytes: u64);