T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

aarch64: Support GOT Relative relocations in PIC mode (#5550)

Browse Source 
* cranelift: Add `adrp` encoding to AArch64 backend

* cranelift: Support GOT Symbol References in AArch64

* cranelift: Add MachO GOT relocations

* cranelift: Do not mark the GOT PageOffset12 MachO relocation as relative
This commit is contained in:
Afonso Bordado
2023-02-15 23:19:18 +00:00
committed by GitHub
parent aba239e9b8
commit eabd43a178
13 changed files with 197 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
cranelift/codegen/src/isa/aarch64/inst/mod.rs
View File

@@ -1080,7 +1080,7 @@ fn aarch64_get_operands<F: Fn(VReg) -> VReg>(inst: &Inst, collector: &mut Operan
}
CondBrKind::Cond(_) => {}
},
&Inst::Adr { rd, .. } => {
&Inst::Adr { rd, .. } | &Inst::Adrp { rd, .. } => {
collector.reg_def(rd);
}
&Inst::Word4 { .. } | &Inst::Word8 { .. } => {}
@@ -2745,6 +2745,12 @@ impl Inst {
let rd = pretty_print_reg(rd.to_reg(), allocs);
format!("adr {}, pc+{}", rd, off)
}
&Inst::Adrp { rd, off } => {
let rd = pretty_print_reg(rd.to_reg(), allocs);
// This instruction addresses 4KiB pages, so multiply it by the page size.
let byte_offset = off * 4096;
format!("adrp {}, pc+{}", rd, byte_offset)
}
&Inst::Word4 { data } => format!("data.i32 {}", data),
&Inst::Word8 { data } => format!("data.i64 {}", data),
&Inst::JTSequence {
@@ -2789,7 +2795,7 @@ impl Inst {
offset,
} => {
let rd = pretty_print_reg(rd.to_reg(), allocs);
format!("ldr {}, 8 ; b 12 ; data {:?} + {}", rd, name, offset)
format!("load_ext_name {rd}, {name:?}+{offset}")
}
&Inst::LoadAddr { rd, ref mem } => {
// TODO: we really should find a better way to avoid duplication of