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Diffstat (limited to 'vendor/rustix/src/backend/linux_raw/arch/outline/nr_last.rs')
-rw-r--r--vendor/rustix/src/backend/linux_raw/arch/outline/nr_last.rs166
1 files changed, 0 insertions, 166 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/arch/outline/nr_last.rs b/vendor/rustix/src/backend/linux_raw/arch/outline/nr_last.rs
deleted file mode 100644
index 4af64d6c4..000000000
--- a/vendor/rustix/src/backend/linux_raw/arch/outline/nr_last.rs
+++ /dev/null
@@ -1,166 +0,0 @@
-//! Syscall wrappers for platforms which pass the syscall number specially.
-//!
-//! Rustix aims to minimize the amount of assembly code it needs. To that end,
-//! this code reorders syscall arguments as close as feasible to the actual
-//! syscall convention before calling the assembly functions.
-//!
-//! Many architectures use a convention where the syscall number is passed in a
-//! special register, with the regular syscall arguments passed in either the
-//! same or similar registers as the platform C convention. This code
-//! approximates that order by passing the regular syscall arguments first, and
-//! the syscall number last. That way, the outline assembly code typically just
-//! needs to move the syscall number to its special register, and leave the
-//! other arguments mostly as they are.
-
-#[cfg(target_arch = "mips")]
-use crate::backend::reg::A6;
-use crate::backend::reg::{ArgReg, RetReg, SyscallNumber, A0, A1, A2, A3, A4, A5, R0};
-
-// First we declare the actual assembly routines with `*_nr_last` names and
-// reordered arguments. If the signatures or calling conventions are ever
-// changed, the symbol names should also be updated accordingly, to avoid
-// collisions with other versions of this crate.
-//
-// We don't define `_readonly` versions of these because we have no way to tell
-// Rust that calls to our outline assembly are readonly.
-extern "C" {
- fn rustix_syscall0_nr_last(nr: SyscallNumber<'_>) -> RetReg<R0>;
- fn rustix_syscall1_nr_last(a0: ArgReg<'_, A0>, nr: SyscallNumber<'_>) -> RetReg<R0>;
- fn rustix_syscall1_noreturn_nr_last(a0: ArgReg<'_, A0>, nr: SyscallNumber<'_>) -> !;
- fn rustix_syscall2_nr_last(
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- nr: SyscallNumber<'_>,
- ) -> RetReg<R0>;
- fn rustix_syscall3_nr_last(
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- nr: SyscallNumber<'_>,
- ) -> RetReg<R0>;
- fn rustix_syscall4_nr_last(
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
- nr: SyscallNumber<'_>,
- ) -> RetReg<R0>;
- fn rustix_syscall5_nr_last(
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
- a4: ArgReg<'_, A4>,
- nr: SyscallNumber<'_>,
- ) -> RetReg<R0>;
- fn rustix_syscall6_nr_last(
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
- a4: ArgReg<'_, A4>,
- a5: ArgReg<'_, A5>,
- nr: SyscallNumber<'_>,
- ) -> RetReg<R0>;
- #[cfg(target_arch = "mips")]
- fn rustix_syscall7_nr_last(
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
- a4: ArgReg<'_, A4>,
- a5: ArgReg<'_, A5>,
- a6: ArgReg<'_, A6>,
- nr: SyscallNumber<'_>,
- ) -> RetReg<R0>;
-}
-
-// Then we define inline wrapper functions that do the reordering.
-
-#[inline]
-pub(in crate::backend) unsafe fn syscall0(nr: SyscallNumber<'_>) -> RetReg<R0> {
- rustix_syscall0_nr_last(nr)
-}
-#[inline]
-pub(in crate::backend) unsafe fn syscall1(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> RetReg<R0> {
- rustix_syscall1_nr_last(a0, nr)
-}
-#[inline]
-pub(in crate::backend) unsafe fn syscall1_noreturn(nr: SyscallNumber<'_>, a0: ArgReg<'_, A0>) -> ! {
- rustix_syscall1_noreturn_nr_last(a0, nr)
-}
-#[inline]
-pub(in crate::backend) unsafe fn syscall2(
- nr: SyscallNumber<'_>,
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
-) -> RetReg<R0> {
- rustix_syscall2_nr_last(a0, a1, nr)
-}
-#[inline]
-pub(in crate::backend) unsafe fn syscall3(
- nr: SyscallNumber<'_>,
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
-) -> RetReg<R0> {
- rustix_syscall3_nr_last(a0, a1, a2, nr)
-}
-#[inline]
-pub(in crate::backend) unsafe fn syscall4(
- nr: SyscallNumber<'_>,
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
-) -> RetReg<R0> {
- rustix_syscall4_nr_last(a0, a1, a2, a3, nr)
-}
-#[inline]
-pub(in crate::backend) unsafe fn syscall5(
- nr: SyscallNumber<'_>,
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
- a4: ArgReg<'_, A4>,
-) -> RetReg<R0> {
- rustix_syscall5_nr_last(a0, a1, a2, a3, a4, nr)
-}
-#[inline]
-pub(in crate::backend) unsafe fn syscall6(
- nr: SyscallNumber<'_>,
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
- a4: ArgReg<'_, A4>,
- a5: ArgReg<'_, A5>,
-) -> RetReg<R0> {
- rustix_syscall6_nr_last(a0, a1, a2, a3, a4, a5, nr)
-}
-#[cfg(target_arch = "mips")]
-#[inline]
-pub(in crate::backend) unsafe fn syscall7(
- nr: SyscallNumber<'_>,
- a0: ArgReg<'_, A0>,
- a1: ArgReg<'_, A1>,
- a2: ArgReg<'_, A2>,
- a3: ArgReg<'_, A3>,
- a4: ArgReg<'_, A4>,
- a5: ArgReg<'_, A5>,
- a6: ArgReg<'_, A6>,
-) -> RetReg<R0> {
- rustix_syscall7_nr_last(a0, a1, a2, a3, a4, a5, a6, nr)
-}
-
-// Then we define the `_readonly` versions of the wrappers. We don't have
-// separate `_readonly` implementations, so these can just be aliases to
-// their non-`_readonly` counterparts.
-#[cfg(target_arch = "mips")]
-pub(in crate::backend) use syscall7 as syscall7_readonly;
-pub(in crate::backend) use {
- syscall0 as syscall0_readonly, syscall1 as syscall1_readonly, syscall2 as syscall2_readonly,
- syscall3 as syscall3_readonly, syscall4 as syscall4_readonly, syscall5 as syscall5_readonly,
- syscall6 as syscall6_readonly,
-};