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

x64: support PC-rel symbol references using the GOT when in PIC mode.

Browse Source
This commit is contained in:
Chris Fallin
2021-01-07 21:59:42 -08:00
parent 8319244059
commit 3ee898cb2c
3 changed files with 82 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
cranelift/codegen/src/isa/x64/inst/emit_tests.rs
View File

@@ -2778,6 +2778,46 @@ fn test_x64_emit() {
"call *321(%r10,%rdx,4)",
));
// ========================================================
// LoadExtName
// N.B.: test harness below sets is_pic.
insns.push((
Inst::LoadExtName {
dst: Writable::from_reg(r11),
name: Box::new(ExternalName::User {
namespace: 0,
index: 0,
}),
offset: 0,
},
"4C8B1D00000000",
"load_ext_name u0:0+0, %r11",
));
insns.push((
Inst::LoadExtName {
dst: Writable::from_reg(r11),
name: Box::new(ExternalName::User {
namespace: 0,
index: 0,
}),
offset: 0x12345678,
},
"4C8B1D000000004981C378563412",
"load_ext_name u0:0+305419896, %r11",
));
insns.push((
Inst::LoadExtName {
dst: Writable::from_reg(r11),
name: Box::new(ExternalName::User {
namespace: 0,
index: 0,
}),
offset: -0x12345678,
},
"4C8B1D000000004981EB78563412",
"load_ext_name u0:0+-305419896, %r11",
));
// ========================================================
// Ret
insns.push((Inst::ret(), "C3", "ret"));
@@ -3693,7 +3733,9 @@ fn test_x64_emit() {
// ========================================================
// Actually run the tests!
let flags = settings::Flags::new(settings::builder());
let mut flag_builder = settings::builder();
flag_builder.enable("is_pic").unwrap();
let flags = settings::Flags::new(flag_builder);
use crate::settings::Configurable;
let mut isa_flag_builder = x64::settings::builder();