"error: out of range pc-relative fixup value" on linux-armel checked CoreCLR_NonPortable

[EgorBo]

linux-armel checked CoreCLR_NonPortable:

  [ 37%] Building ASM object vm/wks/CMakeFiles/cee_wks_core.dir/__/arm/thunktemplates.S.o
  /tmp/thunktemplates-147a73.s:348:9: error: out of range pc-relative fixup value
          ldr pc, StubPrecodeCode + PAGE_SIZE + 0x04
          ^
  /tmp/thunktemplates-147a73.s:355:9: error: out of range pc-relative fixup value
          ldr r12, FixupPrecodeCode + PAGE_SIZE + 0x04
          ^
  /tmp/thunktemplates-147a73.s:356:9: error: out of range pc-relative fixup value
          ldr pc, FixupPrecodeCode + PAGE_SIZE + 0x08
          ^
  /tmp/thunktemplates-147a73.s:369:9: error: out of range pc-relative fixup value
          ldr pc, CallCountingStubCode + PAGE_SIZE + 0x04
          ^
  /tmp/thunktemplates-147a73.s:371:9: error: out of range pc-relative fixup value
          ldr pc, CallCountingStubCode + PAGE_SIZE + 0x08
          ^
  make[2]: *** [vm/wks/CMakeFiles/cee_wks_core.dir/build.make:3470: vm/wks/CMakeFiles/cee_wks_core.dir/__/arm/thunktemplates.S.o] Error 1
  make[1]: *** [CMakeFiles/Makefile2:3712: vm/wks/CMakeFiles/cee_wks_core.dir/all] Error 2

E.g.:
https://dev.azure.com/dnceng-public/public/_build/results?buildId=610702&view=logs&j=2eda3965-9146-55d1-4226-c3d3f8432d8f&t=27bbe0a6-6c05-550a-bc6f-305cf5eac8aa

Known Issue Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "out of range pc-relative fixup value",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=610702
Error message validated: [out of range pc-relative fixup value]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 3/20/2024 10:47:26 PM UTC

Report

Build	Definition	Step Name	Console log	Pull Request
611731	dotnet/runtime	Build product	Log	#100076
611594	dotnet/runtime	Build product	Log	#100012
611588	dotnet/runtime	Build product	Log	#100011
611340	dotnet/runtime	Build product	Log	#99836
611560	dotnet/runtime	Build product	Log	#99953
611533	dotnet/runtime	Build product	Log	#100018
611406	dotnet/runtime	Build product	Log	#99608
611393	dotnet/runtime	Build product	Log	#99956
611371	dotnet/runtime	Build product	Log	#100021
611360	dotnet/runtime	Build product	Log
611333	dotnet/runtime	Build product	Log	#96169
611323	dotnet/runtime	Build product	Log	#96332
611290	dotnet/runtime	Build product	Log	#100000
611265	dotnet/runtime	Build product	Log	#94250
611256	dotnet/runtime	Build product	Log	#100060
611160	dotnet/runtime	Build product	Log	#99778
611096	dotnet/runtime	Build product	Log	#97529
611080	dotnet/runtime	Build product	Log	#100054
611058	dotnet/runtime	Build product	Log	#98258
611008	dotnet/runtime	Build product	Log	#100050
610999	dotnet/runtime	Build product	Log	#99991
610702	dotnet/runtime	Build product	Log	#99818
610676	dotnet/runtime	Build product	Log	#98258
610632	dotnet/runtime	Build product	Log	#100041

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
24	24	24

[am11]

cc @filipnavara, clang was updated yesterday from v17 to v18, which broke the armel build. Is this our bug or compiler's?

  -- The C compiler identification is Clang 18.1.2
  -- The CXX compiler identification is Clang 18.1.2
...
  [ 37%] Building ASM object nativeaot/Runtime/Full/CMakeFiles/Runtime.ServerGC.dir/__/arm/Interlocked.S.o
  /tmp/thunktemplates-9c0dbb.s:348:9: error: out of range pc-relative fixup value
          ldr pc, StubPrecodeCode + PAGE_SIZE + 0x04
          ^
  /tmp/thunktemplates-9c0dbb.s:355:9: error: out of range pc-relative fixup value
          ldr r12, FixupPrecodeCode + PAGE_SIZE + 0x04
          ^
  /tmp/thunktemplates-9c0dbb.s:356:9: error: out of range pc-relative fixup value
          ldr pc, FixupPrecodeCode + PAGE_SIZE + 0x08
          ^
  /tmp/thunktemplates-9c0dbb.s:369:9: error: out of range pc-relative fixup value
          ldr pc, CallCountingStubCode + PAGE_SIZE + 0x04
          ^
  /tmp/thunktemplates-9c0dbb.s:371:9: error: out of range pc-relative fixup value
          ldr pc, CallCountingStubCode + PAGE_SIZE + 0x08
          ^
  make[2]: *** [vm/wks/CMakeFiles/cee_wks_core.dir/build.make:3470: vm/wks/CMakeFiles/cee_wks_core.dir/__/arm/thunktemplates.S.o] Error 1
  make[1]: *** [CMakeFiles/Makefile2:3712: vm/wks/CMakeFiles/cee_wks_core.dir/all] Error 2
  make[1]: *** Waiting for unfinished jobs....

[filipnavara]

I'll have to try it... The relocations can represent only limited range, that should not be an issue here. I'd expect the DATA_SLOT definition to use the same syntax as on ARM64 though (to force the PC-relative relocation meaning):

#define DATA_SLOT(stub, field) . - (. - stub##Code) + PAGE_SIZE + stub##Data__##field

I doubt it will help though.