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use amd_comgr_sys::*;
use std::{ffi::CStr, iter, mem, ptr};
struct Data(amd_comgr_data_t);
impl Data {
fn new(
kind: amd_comgr_data_kind_t,
name: &CStr,
content: &[u8],
) -> Result<Self, amd_comgr_status_s> {
let mut data = unsafe { mem::zeroed() };
unsafe { amd_comgr_create_data(kind, &mut data) }?;
unsafe { amd_comgr_set_data_name(data, name.as_ptr()) }?;
unsafe { amd_comgr_set_data(data, content.len(), content.as_ptr().cast()) }?;
Ok(Self(data))
}
fn get(&self) -> amd_comgr_data_t {
self.0
}
fn copy_content(&self) -> Result<Vec<u8>, amd_comgr_status_s> {
let mut size = unsafe { mem::zeroed() };
unsafe { amd_comgr_get_data(self.get(), &mut size, ptr::null_mut()) }?;
let mut result: Vec<u8> = Vec::with_capacity(size);
unsafe { result.set_len(size) };
unsafe { amd_comgr_get_data(self.get(), &mut size, result.as_mut_ptr().cast()) }?;
Ok(result)
}
}
struct DataSet(amd_comgr_data_set_t);
impl DataSet {
fn new() -> Result<Self, amd_comgr_status_s> {
let mut data_set = unsafe { mem::zeroed() };
unsafe { amd_comgr_create_data_set(&mut data_set) }?;
Ok(Self(data_set))
}
fn add(&self, data: &Data) -> Result<(), amd_comgr_status_s> {
unsafe { amd_comgr_data_set_add(self.get(), data.get()) }
}
fn get(&self) -> amd_comgr_data_set_t {
self.0
}
fn get_data(
&self,
kind: amd_comgr_data_kind_t,
index: usize,
) -> Result<Data, amd_comgr_status_s> {
let mut data = unsafe { mem::zeroed() };
unsafe { amd_comgr_action_data_get_data(self.get(), kind, index, &mut data) }?;
Ok(Data(data))
}
}
impl Drop for DataSet {
fn drop(&mut self) {
unsafe { amd_comgr_destroy_data_set(self.get()).ok() };
}
}
struct ActionInfo(amd_comgr_action_info_t);
impl ActionInfo {
fn new() -> Result<Self, amd_comgr_status_s> {
let mut action = unsafe { mem::zeroed() };
unsafe { amd_comgr_create_action_info(&mut action) }?;
Ok(Self(action))
}
fn set_isa_name(&self, isa: &CStr) -> Result<(), amd_comgr_status_s> {
let mut full_isa = "amdgcn-amd-amdhsa--".to_string().into_bytes();
full_isa.extend(isa.to_bytes_with_nul());
unsafe { amd_comgr_action_info_set_isa_name(self.get(), full_isa.as_ptr().cast()) }
}
fn set_language(&self, language: amd_comgr_language_t) -> Result<(), amd_comgr_status_s> {
unsafe { amd_comgr_action_info_set_language(self.get(), language) }
}
fn set_options<'a>(
&self,
options: impl Iterator<Item = &'a CStr>,
) -> Result<(), amd_comgr_status_s> {
let options = options.map(|x| x.as_ptr()).collect::<Vec<_>>();
unsafe {
amd_comgr_action_info_set_option_list(
self.get(),
options.as_ptr().cast_mut(),
options.len(),
)
}
}
fn get(&self) -> amd_comgr_action_info_t {
self.0
}
}
impl Drop for ActionInfo {
fn drop(&mut self) {
unsafe { amd_comgr_destroy_action_info(self.get()).ok() };
}
}
pub fn compile_bitcode(
gcn_arch: &CStr,
main_buffer: &[u8],
ptx_impl: &[u8],
) -> Result<Vec<u8>, amd_comgr_status_s> {
use amd_comgr_sys::*;
let bitcode_data_set = DataSet::new()?;
let main_bitcode_data = Data::new(
amd_comgr_data_kind_t::AMD_COMGR_DATA_KIND_BC,
c"zluda.bc",
main_buffer,
)?;
bitcode_data_set.add(&main_bitcode_data)?;
let stdlib_bitcode_data = Data::new(
amd_comgr_data_kind_t::AMD_COMGR_DATA_KIND_BC,
c"ptx_impl.bc",
ptx_impl,
)?;
bitcode_data_set.add(&stdlib_bitcode_data)?;
let lang_action_info = ActionInfo::new()?;
lang_action_info.set_isa_name(gcn_arch)?;
lang_action_info.set_language(amd_comgr_language_t::AMD_COMGR_LANGUAGE_LLVM_IR)?;
let with_device_libs = do_action(
&bitcode_data_set,
&lang_action_info,
amd_comgr_action_kind_t::AMD_COMGR_ACTION_COMPILE_SOURCE_WITH_DEVICE_LIBS_TO_BC,
)?;
let linked_data_set = do_action(
&with_device_libs,
&lang_action_info,
amd_comgr_action_kind_t::AMD_COMGR_ACTION_LINK_BC_TO_BC,
)?;
let compile_action_info = ActionInfo::new()?;
compile_action_info.set_isa_name(gcn_arch)?;
compile_action_info.set_options(iter::once(c"-O3"))?;
let reloc_data_set = do_action(
&linked_data_set,
&compile_action_info,
amd_comgr_action_kind_t::AMD_COMGR_ACTION_CODEGEN_BC_TO_RELOCATABLE,
)?;
let exec_data_set = do_action(
&reloc_data_set,
&compile_action_info,
amd_comgr_action_kind_t::AMD_COMGR_ACTION_LINK_RELOCATABLE_TO_EXECUTABLE,
)?;
let executable =
exec_data_set.get_data(amd_comgr_data_kind_t::AMD_COMGR_DATA_KIND_EXECUTABLE, 0)?;
executable.copy_content()
}
fn do_action(
data_set: &DataSet,
action: &ActionInfo,
kind: amd_comgr_action_kind_t,
) -> Result<DataSet, amd_comgr_status_s> {
let result = DataSet::new()?;
unsafe { amd_comgr_do_action(kind, action.get(), data_set.get(), result.get()) }?;
Ok(result)
}
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