Add `package sys/llvm` to expose some of the LLVM intrinsics

1 files changed, 71 insertions, 0 deletions

diff --git a/core/sys/llvm/code_generator.odin b/core/sys/llvm/code_generator.odin
new file mode 100644
index 000000000..7d41ed67b
--- /dev/null
+++ b/core/sys/llvm/code_generator.odin
@@ -0,0 +1,71 @@
+// Code Generator Intrinsics
+package sys_llvm
+
+@(default_calling_convention="none")
+foreign _ {
+	@(link_name="llvm.returnaddress")
+	return_address :: proc(#const level: u32 = 0) -> rawptr ---
+
+	@(link_name="llvm.addressofreturnaddress")
+	address_of_return_address :: proc() -> rawptr ---
+
+	@(link_name="llvm.sponentry")
+	stack_pointer_on_entry :: proc() -> rawptr ---
+
+	@(link_name="llvm.frameaddress")
+	frame_address :: proc(#const level: u32 = 0) -> rawptr ---
+
+	@(link_name="llvm.stacksave")
+	stack_save :: proc() -> rawptr ---
+
+	@(link_name="llvm.stackrestore")
+	stack_restore :: proc(ptr: rawptr) ---
+
+	@(link_name="llvm.get.dynamic.area.offset.i32")
+	get_dynamic_area_offset_i32 :: proc() -> i32 ---
+
+	@(link_name="llvm.get.dynamic.area.offset.i64")
+	get_dynamic_area_offset_i64 :: proc() -> i64 ---
+}
+
+
+Prefetch_Read_Write :: enum i32 {
+	Read = 0,
+	Write = 1,
+}
+
+Prefetch_Locality :: enum i32 {
+	None = 0,
+	Low  = 1,
+	Mid  = 2,
+	High = 3,
+}
+
+Prefetch_Cache :: enum i32 {
+	Instruction = 0,
+	Data = 1,
+}
+
+
+@(default_calling_convention="none")
+foreign _ {
+	@(link_name="llvm.prefetch")
+	prefetch :: proc(address: rawptr, #const rw: Prefetch_Read_Write, #const locality: Prefetch_Locality, #const cache: Prefetch_Cache) ---
+}
+
+
+
+@(default_calling_convention="none")
+foreign _ {
+	@(link_name="llvm.pcmarker")
+	pc_marker :: proc(id: i32) ---
+
+	@(link_name="llvm.readcyclecounter")
+	read_cycle_counter :: proc() -> u64 ---
+
+	@(link_name="llvm.clear_cache")
+	clear_cache :: proc(rawptr, rawptr) ---
+
+	@(link_name="llvm.thread.pointer")
+	thread_pointer :: proc() -> rawptr ---
+}