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Rollup merge of rust-lang#88245 - Sl1mb0:s390-asm, r=Amanieu
S390x inline asm This adds register definitions and constraint codes for the s390x general and floating point registers necessary for fixing rust-lang#85931; as well as a few tests. Further testing is needed, but I am a little unsure of what specific tests should be added to `src/test/assembly/asm/s390x.rs` to address this.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| use super::{InlineAsmArch, InlineAsmType}; | ||
| use rustc_macros::HashStable_Generic; | ||
| use std::fmt; | ||
|
|
||
| def_reg_class! { | ||
| S390x S390xInlineAsmRegClass { | ||
| reg, | ||
| freg, | ||
| } | ||
| } | ||
|
|
||
| impl S390xInlineAsmRegClass { | ||
| pub fn valid_modifiers(self, _arch: super::InlineAsmArch) -> &'static [char] { | ||
| &[] | ||
| } | ||
|
|
||
| pub fn suggest_class(self, _arch: InlineAsmArch, _ty: InlineAsmType) -> Option<Self> { | ||
| None | ||
| } | ||
|
|
||
| pub fn suggest_modifier( | ||
| self, | ||
| _arch: InlineAsmArch, | ||
| _ty: InlineAsmType, | ||
| ) -> Option<(char, &'static str)> { | ||
| None | ||
| } | ||
|
|
||
| pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { | ||
| None | ||
| } | ||
|
|
||
| pub fn supported_types( | ||
| self, | ||
| arch: InlineAsmArch, | ||
| ) -> &'static [(InlineAsmType, Option<&'static str>)] { | ||
| match (self, arch) { | ||
| (Self::reg, _) => types! { _: I8, I16, I32, I64; }, | ||
| (Self::freg, _) => types! { _: F32, F64; }, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| def_regs! { | ||
| S390x S390xInlineAsmReg S390xInlineAsmRegClass { | ||
| r0: reg = ["r0"], | ||
| r1: reg = ["r1"], | ||
| r2: reg = ["r2"], | ||
| r3: reg = ["r3"], | ||
| r4: reg = ["r4"], | ||
| r5: reg = ["r5"], | ||
| r6: reg = ["r6"], | ||
| r7: reg = ["r7"], | ||
| r8: reg = ["r8"], | ||
| r9: reg = ["r9"], | ||
| r10: reg = ["r10"], | ||
| r12: reg = ["r12"], | ||
| r13: reg = ["r13"], | ||
| r14: reg = ["r14"], | ||
| f0: freg = ["f0"], | ||
| f1: freg = ["f1"], | ||
| f2: freg = ["f2"], | ||
| f3: freg = ["f3"], | ||
| f4: freg = ["f4"], | ||
| f5: freg = ["f5"], | ||
| f6: freg = ["f6"], | ||
| f7: freg = ["f7"], | ||
| f8: freg = ["f8"], | ||
| f9: freg = ["f9"], | ||
| f10: freg = ["f10"], | ||
| f11: freg = ["f11"], | ||
| f12: freg = ["f12"], | ||
| f13: freg = ["f13"], | ||
| f14: freg = ["f14"], | ||
| f15: freg = ["f15"], | ||
| #error = ["r11"] => | ||
| "The frame pointer cannot be used as an operand for inline asm", | ||
| #error = ["r15"] => | ||
| "The stack pointer cannot be used as an operand for inline asm", | ||
| #error = [ | ||
| "c0", "c1", "c2", "c3", | ||
| "c4", "c5", "c6", "c7", | ||
| "c8", "c9", "c10", "c11", | ||
| "c12", "c13", "c14", "c15" | ||
| ] => | ||
| "control registers are reserved by the kernel and cannot be used as operands for inline asm", | ||
| #error = [ | ||
| "a0", "a1", "a2", "a3", | ||
| "a4", "a5", "a6", "a7", | ||
| "a8", "a9", "a10", "a11", | ||
| "a12", "a13", "a14", "a15" | ||
| ] => | ||
| "access registers are not supported and cannot be used as operands for inline asm", | ||
| } | ||
| } | ||
|
|
||
| impl S390xInlineAsmReg { | ||
| pub fn emit( | ||
| self, | ||
| out: &mut dyn fmt::Write, | ||
| _arch: InlineAsmArch, | ||
| _modifier: Option<char>, | ||
| ) -> fmt::Result { | ||
| write!(out, "%{}", self.name()) | ||
| } | ||
| } |
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