Import the asm! macro from core::arch

It is going to be removed from the prelude due to the decision in
rust-lang/rust#87228

Author: Amanieu

crates/core_arch/src/aarch64/armclang.rs

@@ -19,5 +19,5 @@ use stdarch_test::assert_instr;
 #[rustc_legacy_const_generics(0)]
 pub unsafe fn __breakpoint<const VAL: i32>() {
     static_assert_imm16!(VAL);
-    asm!("brk {}", const VAL);
+    crate::arch::asm!("brk {}", const VAL);
 }

crates/core_arch/src/arm/armclang.rs

@@ -31,5 +31,5 @@ use stdarch_test::assert_instr;
 #[rustc_legacy_const_generics(0)]
 pub unsafe fn __breakpoint<const VAL: i32>() {
     static_assert_imm8!(VAL);
-    asm!("bkpt #{}", const VAL);
+    crate::arch::asm!("bkpt #{}", const VAL);
 }

crates/core_arch/src/arm_shared/barrier/cp15.rs

@@ -1,6 +1,8 @@
 // Reference: ARM11 MPCore Processor Technical Reference Manual (ARM DDI 0360E) Section 3.5 "Summary
 // of CP15 instructions"
 
+use crate::arch::asm;
+
 /// Full system is the required shareability domain, reads and writes are the
 /// required access types
 pub struct SY;

crates/core_arch/src/arm_shared/hints.rs

@@ -77,7 +77,7 @@ pub unsafe fn __yield() {
 /// will increase execution time.
 #[inline(always)]
 pub unsafe fn __nop() {
-    asm!("nop", options(nomem, nostack, preserves_flags));
+    crate::arch::asm!("nop", options(nomem, nostack, preserves_flags));
 }
 
 extern "unadjusted" {

crates/core_arch/src/arm_shared/registers/mod.rs

@@ -4,7 +4,7 @@ macro_rules! rsr {
         impl super::super::sealed::Rsr for $R {
             unsafe fn __rsr(&self) -> u32 {
                 let r: u32;
-                asm!(concat!("mrs {},", stringify!($R)), out(reg) r, options(nomem, nostack));
+                crate::arch::asm!(concat!("mrs {},", stringify!($R)), out(reg) r, options(nomem, nostack));
                 r
             }
         }
@@ -17,7 +17,7 @@ macro_rules! rsrp {
         impl super::super::sealed::Rsrp for $R {
             unsafe fn __rsrp(&self) -> *const u8 {
                 let r: *const u8;
-                asm!(concat!("mrs {},", stringify!($R)), out(reg) r, options(nomem, nostack));
+                crate::arch::asm!(concat!("mrs {},", stringify!($R)), out(reg) r, options(nomem, nostack));
                 r
             }
         }
@@ -29,7 +29,7 @@ macro_rules! wsr {
     ($R:ident) => {
         impl super::super::sealed::Wsr for $R {
             unsafe fn __wsr(&self, value: u32) {
-                asm!(concat!("msr ", stringify!($R), ", {}"), in(reg) value, options(nomem, nostack));
+                crate::arch::asm!(concat!("msr ", stringify!($R), ", {}"), in(reg) value, options(nomem, nostack));
             }
         }
     };
@@ -40,7 +40,7 @@ macro_rules! wsrp {
     ($R:ident) => {
         impl super::super::sealed::Wsrp for $R {
             unsafe fn __wsrp(&self, value: *const u8) {
-                asm!(concat!("msr ", stringify!($R), ", {}"), in(reg) value, options(nomem, nostack));
+                crate::arch::asm!(concat!("msr ", stringify!($R), ", {}"), in(reg) value, options(nomem, nostack));
             }
         }
     };

crates/core_arch/src/lib.rs

@@ -68,7 +68,10 @@ extern crate std_detect;
 #[path = "mod.rs"]
 mod core_arch;
 
-pub use self::core_arch::arch;
+pub mod arch {
+    pub use crate::core_arch::arch::*;
+    pub use core::arch::asm;
+}
 
 #[allow(unused_imports)]
 use core::{convert, ffi, hint, intrinsics, marker, mem, ops, ptr, sync};

crates/core_arch/src/riscv/mod.rs

@@ -6,5 +6,5 @@
 /// should be temporarily reduced or paused. The duration of its effect must be bounded and may be zero.
 #[inline]
 pub fn pause() {
-    unsafe { asm!(".word 0x0100000F", options(nomem, nostack)) }
+    unsafe { crate::arch::asm!(".word 0x0100000F", options(nomem, nostack)) }
 }

crates/core_arch/src/x86/avx512bw.rs

@@ -1,4 +1,5 @@
 use crate::{
+    arch::asm,
     core_arch::{simd::*, simd_llvm::*, x86::*},
     mem::{self, transmute},
     ptr,

crates/core_arch/src/x86/avx512f.rs

@@ -1,4 +1,5 @@
 use crate::{
+    arch::asm,
     core_arch::{simd::*, simd_llvm::*, x86::*},
     mem::{self, transmute},
     ptr,

crates/core_arch/src/x86/bt.rs

@@ -1,3 +1,4 @@
+use crate::arch::asm;
 #[cfg(test)]
 use stdarch_test::assert_instr;
 

crates/core_arch/src/x86/cpuid.rs

@@ -1,6 +1,7 @@
 //! `cpuid` intrinsics
 #![allow(clippy::module_name_repetitions)]
 
+use crate::arch::asm;
 #[cfg(test)]
 use stdarch_test::assert_instr;
 

crates/core_arch/src/x86/eflags.rs

@@ -1,5 +1,7 @@
 //! `i386` intrinsics
 
+use crate::arch::asm;
+
 /// Reads EFLAGS.
 ///
 /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=__readeflags)

crates/core_arch/src/x86_64/bt.rs

@@ -1,3 +1,4 @@
+use crate::arch::asm;
 #[cfg(test)]
 use stdarch_test::assert_instr;