60 lines
1.3 KiB
Rust
60 lines
1.3 KiB
Rust
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// assembly-output: emit-asm
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// compile-flags: --target avr-unknown-gnu-atmega328
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// needs-llvm-components: avr
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#![feature(no_core, lang_items, rustc_attrs, asm_experimental_arch)]
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#![crate_type = "rlib"]
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#![no_core]
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#![allow(non_camel_case_types)]
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#[rustc_builtin_macro]
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macro_rules! asm {
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() => {};
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}
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#[rustc_builtin_macro]
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macro_rules! concat {
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() => {};
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}
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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type ptr = *const u64;
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impl Copy for i8 {}
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impl Copy for i16 {}
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impl Copy for i32 {}
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impl Copy for i64 {}
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impl Copy for ptr {}
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macro_rules! check {
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($func:ident $hi:literal $lo:literal $reg:tt) => {
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#[no_mangle]
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unsafe fn $func() -> i16 {
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let y;
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asm!(concat!("mov {0:", $hi, "}, {0:", $lo, "}"), out($reg) y);
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y
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}
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};
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}
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// CHECK-LABEL: reg_pair_modifiers:
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// CHECK: ;APP
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// CHECK: mov r{{[1-9]?[13579]}}, r{{[1-9]?[24680]}}
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// CHECK: ;NO_APP
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check!(reg_pair_modifiers "h" "l" reg_pair);
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// CHECK-LABEL: reg_iw_modifiers:
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// CHECK: ;APP
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// CHECK: mov r{{[1-9]?[13579]}}, r{{[1-9]?[24680]}}
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// CHECK: ;NO_APP
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check!(reg_iw_modifiers "h" "l" reg_iw);
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// CHECK-LABEL: reg_ptr_modifiers:
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// CHECK: ;APP
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// CHECK: mov r{{[1-9]?[13579]}}, r{{[1-9]?[24680]}}
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// CHECK: ;NO_APP
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check!(reg_ptr_modifiers "h" "l" reg_ptr);
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