Jeremy Soller
87 lines
1.5 KiB
Rust
87 lines
1.5 KiB
Rust
#[macro_use]
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pub mod macros;
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/// Constants like memory locations
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pub mod consts;
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/// Debugging support
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pub mod debug;
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/// Devices
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pub mod device;
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/// Interrupt instructions
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pub mod interrupt;
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/// Inter-processor interrupts
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pub mod ipi;
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/// Miscellaneous
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pub mod misc;
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/// Paging
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pub mod paging;
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pub mod rmm;
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/// Initialization and start function
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pub mod start;
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/// Stop function
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pub mod stop;
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// Interrupt vectors
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pub mod vectors;
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/// Early init support
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pub mod init;
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pub mod time;
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pub use ::rmm::AArch64Arch as CurrentRmmArch;
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pub use arch_copy_to_user as arch_copy_from_user;
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#[naked]
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#[link_section = ".usercopy-fns"]
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pub unsafe extern "C" fn arch_copy_to_user(dst: usize, src: usize, len: usize) -> u8 {
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// x0, x1, x2
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core::arch::asm!(
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"
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mov x4, x0
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mov x0, 0
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2:
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cmp x2, 0
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b.eq 3f
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ldrb w3, [x1]
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strb w3, [x4]
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add x4, x4, 1
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add x1, x1, 1
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sub x2, x2, 1
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b 2b
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3:
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ret
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",
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options(noreturn)
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);
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}
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pub unsafe fn bootstrap_mem(bootstrap: &crate::Bootstrap) -> &'static [u8] {
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use crate::memory::PAGE_SIZE;
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use ::rmm::Arch;
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core::slice::from_raw_parts(
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CurrentRmmArch::phys_to_virt(bootstrap.base.start_address()).data() as *const u8,
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bootstrap.page_count * PAGE_SIZE,
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)
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}
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pub const KFX_SIZE: usize = 1024;
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// This function exists as the KFX size is dynamic on x86_64.
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pub fn kfx_size() -> usize {
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KFX_SIZE
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}
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