rustc_target/asm/
csky.rs

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1use std::fmt;
2
3use rustc_span::Symbol;
4
5use super::{InlineAsmArch, InlineAsmType, ModifierInfo};
6
7def_reg_class! {
8    CSKY CSKYInlineAsmRegClass {
9        reg,
10        freg,
11    }
12}
13
14impl CSKYInlineAsmRegClass {
15    pub fn valid_modifiers(self, _arch: super::InlineAsmArch) -> &'static [char] {
16        &[]
17    }
18
19    pub fn suggest_class(self, _arch: InlineAsmArch, _ty: InlineAsmType) -> Option<Self> {
20        None
21    }
22
23    pub fn suggest_modifier(
24        self,
25        _arch: InlineAsmArch,
26        _ty: InlineAsmType,
27    ) -> Option<ModifierInfo> {
28        None
29    }
30
31    pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<ModifierInfo> {
32        None
33    }
34
35    pub fn supported_types(
36        self,
37        _arch: InlineAsmArch,
38    ) -> &'static [(InlineAsmType, Option<Symbol>)] {
39        match self {
40            Self::reg => types! { _: I8, I16, I32; },
41            Self::freg => types! { _: F32; },
42        }
43    }
44}
45
46// The reserved registers are taken from <https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/CSKY/CSKYRegisterInfo.cpp#79>
47def_regs! {
48    CSKY CSKYInlineAsmReg CSKYInlineAsmRegClass {
49        r0: reg = ["r0","a0"],
50        r1: reg = ["r1","a1"],
51        r2: reg = ["r2","a2"],
52        r3: reg = ["r3","a3"],
53        r4: reg = ["r4","l0"],
54        r5: reg = ["r5","l1"],
55        r6: reg = ["r6","l2"],
56        r9: reg = ["r9","l5"],// feature e2
57        r10: reg = ["r10","l6"],// feature e2
58        r11: reg = ["r11","l7"],// feature e2
59        r12: reg = ["r12","t0"],// feature e2
60        r13: reg = ["r13","t1"],// feature e2
61        r16: reg = ["r16","l8"],// feature high-register
62        r17: reg = ["r17","l9"],// feature high-register
63        r18: reg = ["r18","t2"],// feature high-register
64        r19: reg = ["r19","t3"],// feature high-register
65        r20: reg = ["r20","t4"],// feature high-register
66        r21: reg = ["r21","t5"],// feature high-register
67        r22: reg = ["r22","t6"],// feature high-register
68        r23: reg = ["r23","t7"],// feature high-register
69        r24: reg = ["r24","t8"],// feature high-register
70        r25: reg = ["r25","t9"],// feature high-register
71        f0: freg = ["fr0","vr0"],
72        f1: freg = ["fr1","vr1"],
73        f2: freg = ["fr2","vr2"],
74        f3: freg = ["fr3","vr3"],
75        f4: freg = ["fr4","vr4"],
76        f5: freg = ["fr5","vr5"],
77        f6: freg = ["fr6","vr6"],
78        f7: freg = ["fr7","vr7"],
79        f8: freg = ["fr8","vr8"],
80        f9: freg = ["fr9","vr9"],
81        f10: freg = ["fr10","vr10"],
82        f11: freg = ["fr11","vr11"],
83        f12: freg = ["fr12","vr12"],
84        f13: freg = ["fr13","vr13"],
85        f14: freg = ["fr14","vr14"],
86        f15: freg = ["fr15","vr15"],
87        f16: freg = ["fr16","vr16"],
88        f17: freg = ["fr17","vr17"],
89        f18: freg = ["fr18","vr18"],
90        f19: freg = ["fr19","vr19"],
91        f20: freg = ["fr20","vr20"],
92        f21: freg = ["fr21","vr21"],
93        f22: freg = ["fr22","vr22"],
94        f23: freg = ["fr23","vr23"],
95        f24: freg = ["fr24","vr24"],
96        f25: freg = ["fr25","vr25"],
97        f26: freg = ["fr26","vr26"],
98        f27: freg = ["fr27","vr27"],
99        f28: freg = ["fr28","vr28"],
100        f29: freg = ["fr29","vr29"],
101        f30: freg = ["fr30","vr30"],
102        f31: freg = ["fr31","vr31"],
103        #error = ["r7", "l3"] =>
104            "the base pointer cannot be used as an operand for inline asm",
105        #error = ["r8","l4"] =>
106            "the frame pointer cannot be used as an operand for inline asm",
107        #error = ["r14","sp"] =>
108            "the stack pointer cannot be used as an operand for inline asm",
109        #error = ["r15","lr"] =>
110            "the link register cannot be used as an operand for inline asm",
111        #error = ["r31","tls"] =>
112            "reserver for tls",
113        #error = ["r28", "gb", "rgb", "rdb"] =>
114            "the global pointer cannot be used as an operand for inline asm",
115        #error = ["r26","r27","r29","tb", "rtb", "r30","svbr"] =>
116            "reserved by the ABI",
117    }
118}
119
120impl CSKYInlineAsmReg {
121    pub fn emit(
122        self,
123        out: &mut dyn fmt::Write,
124        _arch: InlineAsmArch,
125        _modifier: Option<char>,
126    ) -> fmt::Result {
127        out.write_str(self.name())
128    }
129}
rustc_target/asm/csky.rs

rustc_target/asm/
csky.rs
