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use super::*;
use core::mem as cmem;
#[inline(always)]
pub fn write_command_on_msg_buffer(ctx: &mut CommandContext, command_type: CommandType, data_size: u32) {
unsafe {
let mut ipc_buf = get_msg_buffer();
let has_special_header = ctx.in_params.send_process_id || !ctx.in_params.copy_handles.is_empty() || !ctx.in_params.move_handles.is_empty();
let data_word_count = (data_size + 3) / 4;
let command_header = ipc_buf as *mut CommandHeader;
*command_header = CommandHeader::new(command_type as u32, ctx.send_statics.len() as u32, ctx.send_buffers.len() as u32, ctx.receive_buffers.len() as u32, ctx.exchange_buffers.len() as u32, data_word_count, ctx.receive_statics.len() as u32, has_special_header);
ipc_buf = command_header.offset(1) as *mut u8;
if has_special_header {
let special_header = ipc_buf as *mut CommandSpecialHeader;
*special_header = CommandSpecialHeader::new(ctx.in_params.send_process_id, ctx.in_params.copy_handles.len() as u32, ctx.in_params.move_handles.len() as u32);
ipc_buf = special_header.offset(1) as *mut u8;
if ctx.in_params.send_process_id {
ipc_buf = ipc_buf.add(cmem::size_of::<u64>());
}
ipc_buf = write_array_to_buffer(ipc_buf, ctx.in_params.copy_handles.len() as u32, &ctx.in_params.copy_handles);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.in_params.move_handles.len() as u32, &ctx.in_params.move_handles);
}
ipc_buf = write_array_to_buffer(ipc_buf, ctx.send_statics.len() as u32, &ctx.send_statics);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.send_buffers.len() as u32, &ctx.send_buffers);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.receive_buffers.len() as u32, &ctx.receive_buffers);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.exchange_buffers.len() as u32, &ctx.exchange_buffers);
ctx.in_params.data_words_offset = ipc_buf;
ipc_buf = ipc_buf.add(cmem::size_of::<u32>() * data_word_count as usize);
write_array_to_buffer(ipc_buf, ctx.receive_statics.len() as u32, &ctx.receive_statics);
}
}
#[inline(always)]
pub fn read_command_response_from_msg_buffer(ctx: &mut CommandContext) {
unsafe {
let mut ipc_buf = get_msg_buffer();
let command_header = ipc_buf as *mut CommandHeader;
ipc_buf = command_header.offset(1) as *mut u8;
let mut copy_handle_count: u32 = 0;
let mut move_handle_count: u32 = 0;
if (*command_header).get_has_special_header() {
let special_header = ipc_buf as *mut CommandSpecialHeader;
copy_handle_count = (*special_header).get_copy_handle_count();
move_handle_count = (*special_header).get_move_handle_count();
ipc_buf = special_header.offset(1) as *mut u8;
if (*special_header).get_send_process_id() {
ctx.out_params.process_id = *(ipc_buf as *mut u64);
ipc_buf = ipc_buf.add(cmem::size_of::<u64>());
}
}
ipc_buf = read_array_from_buffer(ipc_buf, copy_handle_count, &mut ctx.out_params.copy_handles);
ipc_buf = read_array_from_buffer(ipc_buf, move_handle_count, &mut ctx.out_params.move_handles);
ipc_buf = ipc_buf.add(cmem::size_of::<SendStaticDescriptor>() * (*command_header).get_send_static_count() as usize);
ctx.out_params.data_words_offset = ipc_buf;
}
}
#[inline(always)]
pub fn write_request_command_on_msg_buffer(ctx: &mut CommandContext, request_id: Option<u32>, domain_command_type: DomainCommandType) {
unsafe {
let ipc_buf = get_msg_buffer();
let has_data_header = request_id.is_some();
let mut data_size = DATA_PADDING + ctx.in_params.data_size;
if has_data_header {
data_size += cmem::size_of::<DataHeader>() as u32;
}
if ctx.object_info.is_domain() {
data_size += (cmem::size_of::<DomainInDataHeader>() + cmem::size_of::<DomainObjectId>() * ctx.in_params.objects.len()) as u32;
}
data_size = (data_size + 1) & !1;
let out_pointer_sizes_offset = data_size;
data_size += (cmem::size_of::<u16>() * ctx.in_params.out_pointer_sizes.len()) as u32;
write_command_on_msg_buffer(ctx, CommandType::Request, data_size);
let mut data_offset = get_aligned_data_offset(ctx.in_params.data_words_offset, ipc_buf);
let out_pointer_sizes = ctx.in_params.data_words_offset.offset(out_pointer_sizes_offset as isize);
write_array_to_buffer(out_pointer_sizes, ctx.in_params.out_pointer_sizes.len() as u32, &ctx.in_params.out_pointer_sizes);
let mut data_header = data_offset as *mut DataHeader;
if ctx.object_info.is_domain() {
let domain_header = data_offset as *mut DomainInDataHeader;
let left_data_size = cmem::size_of::<DataHeader>() as u32 + ctx.in_params.data_size;
*domain_header = DomainInDataHeader::new(domain_command_type, ctx.in_params.objects.len() as u8, left_data_size as u16, ctx.object_info.domain_object_id, 0);
data_offset = data_offset.add(cmem::size_of::<DomainInDataHeader>());
let objects_offset = data_offset.offset(left_data_size as isize);
write_array_to_buffer(objects_offset, ctx.in_params.objects.len() as u32, &ctx.in_params.objects);
data_header = data_offset as *mut DataHeader;
}
if has_data_header {
*data_header = DataHeader::new(IN_DATA_HEADER_MAGIC, 0, request_id.unwrap(), 0);
data_offset = data_offset.add(cmem::size_of::<DataHeader>());
}
ctx.in_params.data_offset = data_offset;
}
}
#[inline(always)]
pub fn read_request_command_response_from_msg_buffer(ctx: &mut CommandContext) -> Result<()> {
unsafe {
let ipc_buf = get_msg_buffer();
read_command_response_from_msg_buffer(ctx);
let mut data_offset = get_aligned_data_offset(ctx.out_params.data_words_offset, ipc_buf);
let mut data_header = data_offset as *mut DataHeader;
if ctx.object_info.is_domain() {
let domain_header = data_offset as *mut DomainOutDataHeader;
data_offset = data_offset.add(cmem::size_of::<DomainOutDataHeader>());
let objects_offset = data_offset.add(cmem::size_of::<DataHeader>() + ctx.out_params.data_size as usize);
let object_count = (*domain_header).out_object_count;
read_array_from_buffer(objects_offset, object_count, &mut ctx.out_params.objects);
data_header = data_offset as *mut DataHeader;
}
data_offset = data_offset.add(cmem::size_of::<DataHeader>());
result_return_unless!((*data_header).magic == OUT_DATA_HEADER_MAGIC, super::rc::ResultInvalidOutputHeader);
result_try!(ResultCode::new((*data_header).value));
ctx.out_params.data_offset = data_offset;
Ok(())
}
}
#[inline(always)]
pub fn write_control_command_on_msg_buffer(ctx: &mut CommandContext, request_id: ControlRequestId) {
unsafe {
let ipc_buf = get_msg_buffer();
let data_size = DATA_PADDING + cmem::size_of::<DataHeader>() as u32 + ctx.in_params.data_size;
write_command_on_msg_buffer(ctx, CommandType::Control, data_size);
let mut data_offset = get_aligned_data_offset(ctx.in_params.data_words_offset, ipc_buf);
let data_header = data_offset as *mut DataHeader;
*data_header = DataHeader::new(IN_DATA_HEADER_MAGIC, 0, request_id as u32, 0);
data_offset = data_offset.add(cmem::size_of::<DataHeader>());
ctx.in_params.data_offset = data_offset;
}
}
#[inline(always)]
pub fn read_control_command_response_from_msg_buffer(ctx: &mut CommandContext) -> Result<()> {
unsafe {
let ipc_buf = get_msg_buffer();
read_command_response_from_msg_buffer(ctx);
let mut data_offset = get_aligned_data_offset(ctx.out_params.data_words_offset, ipc_buf);
let data_header = data_offset as *mut DataHeader;
data_offset = data_offset.add(cmem::size_of::<DataHeader>());
result_return_unless!((*data_header).magic == OUT_DATA_HEADER_MAGIC, super::rc::ResultInvalidOutputHeader);
result_try!(ResultCode::new((*data_header).value));
ctx.out_params.data_offset = data_offset;
Ok(())
}
}
#[inline(always)]
pub fn write_close_command_on_msg_buffer(ctx: &mut CommandContext) {
write_command_on_msg_buffer(ctx, CommandType::Close, 0);
}