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| author | joboet <jonasboettiger@icloud.com> | 2024-01-11 20:10:25 +0100 |
|---|---|---|
| committer | joboet <jonasboettiger@icloud.com> | 2024-01-11 20:10:25 +0100 |
| commit | 99128b7e45f8b95d962da2e6ea584767f0c85455 (patch) | |
| tree | 20874cb2d8526a427342c32a45bc63a21022499c /library/std/src/sys/uefi/alloc.rs | |
| parent | 062e7c6a951c1e4f33c0a6f6761755949cde15ec (diff) | |
| download | rust-99128b7e45f8b95d962da2e6ea584767f0c85455.tar.gz rust-99128b7e45f8b95d962da2e6ea584767f0c85455.zip | |
std: begin moving platform support modules into `pal`
Diffstat (limited to 'library/std/src/sys/uefi/alloc.rs')
| -rw-r--r-- | library/std/src/sys/uefi/alloc.rs | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/library/std/src/sys/uefi/alloc.rs b/library/std/src/sys/uefi/alloc.rs deleted file mode 100644 index ad3904d82f3..00000000000 --- a/library/std/src/sys/uefi/alloc.rs +++ /dev/null @@ -1,49 +0,0 @@ -//! Global Allocator for UEFI. -//! Uses [r-efi-alloc](https://crates.io/crates/r-efi-alloc) - -use r_efi::protocols::loaded_image; - -use crate::alloc::{GlobalAlloc, Layout, System}; -use crate::sync::OnceLock; -use crate::sys::uefi::helpers; - -#[stable(feature = "alloc_system_type", since = "1.28.0")] -unsafe impl GlobalAlloc for System { - unsafe fn alloc(&self, layout: Layout) -> *mut u8 { - static EFI_MEMORY_TYPE: OnceLock<u32> = OnceLock::new(); - - // Return null pointer if boot services are not available - if crate::os::uefi::env::boot_services().is_none() { - return crate::ptr::null_mut(); - } - - // If boot services is valid then SystemTable is not null. - let system_table = crate::os::uefi::env::system_table().as_ptr().cast(); - - // Each loaded image has an image handle that supports `EFI_LOADED_IMAGE_PROTOCOL`. Thus, this - // will never fail. - let mem_type = EFI_MEMORY_TYPE.get_or_init(|| { - let protocol = helpers::image_handle_protocol::<loaded_image::Protocol>( - loaded_image::PROTOCOL_GUID, - ) - .unwrap(); - // Gives allocations the memory type that the data sections were loaded as. - unsafe { (*protocol.as_ptr()).image_data_type } - }); - - // The caller must ensure non-0 layout - unsafe { r_efi_alloc::raw::alloc(system_table, layout, *mem_type) } - } - - unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) { - // Do nothing if boot services are not available - if crate::os::uefi::env::boot_services().is_none() { - return; - } - - // If boot services is valid then SystemTable is not null. - let system_table = crate::os::uefi::env::system_table().as_ptr().cast(); - // The caller must ensure non-0 layout - unsafe { r_efi_alloc::raw::dealloc(system_table, ptr, layout) } - } -} |
