Cross compiling hsdis for RISC-V

[Zixian Cai]

Hi all,

I made a mistake. I used the binutils version on the FSF wiki https://directory.fsf.org/wiki/Binutils , which is neither the latest nor what’s supported by hsdis. I built binutils-2.37 per hsdis/README.md, and everything works fine now.

Sincerely,
Zixian

On 9/10/2022, 17:39, "riscv-port-dev" <riscv-port-dev-retn at openjdk.org> wrote:
Hi all,

I’m just wondering how I can cross compile hsdis for RISC-V.
I downloaded the source of binutils-2.36.1, and configured jdk.

bash configure --openjdk-target=riscv64-linux-gnu --with-sysroot=../sysroot-riscv64/ --with-boot-jdk=/usr/lib/jvm/temurin-19-jdk-amd64 --with-debug-level=slowdebug --with-jvm-variants=server --disable-warnings-as-errors --with-hsdis=binutils --with-binutils-src=$PWD/../binutils-2.36.1

OpenJDK configure exited with error when configuring binutils, because binutils wants to be configured with --host when cross compiling.
I workarounded the problem by configuring and building binutils manually, so OpenJDK configure will skip building binutils.
The flags I used are from jdk/make/autoconf/lib-hsdis.m4

./configure --host=riscv64-linux-gnu --disable-nls CFLAGS="  -fPIC -O0"
make -j

I then run jdk configure again, and build jdk with hsdis.
make CONF=linux-riscv64-server-slowdebug install-hsdis

The build succeeded. But when I try to run a program, JVM will crash with the following backtrace.

/mnt/jdk/build/linux-riscv64-server-slowdebug/jdk/bin/java -XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly -XX:+DebugNonSafepoints -XX:+PrintStubCode -Xint -version

- - - [BEGIN] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
ICache::fake_stub_for_inlined_icache_flush [0x00007fff95000080, 0x00007fff95000084] (4 bytes)
--------------------------------------------------------------------------------
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007fff9d467e84, pid=14142, tid=14143
#

The backtrace is as follows.

Current thread (0x00007fffa8028f30):  JavaThread "Unknown thread" [_thread_in_vm, id=13140, stack(0x00007fffaee75000,0x00007fffaf075000)]

Stack: [0x00007fffaee75000,0x00007fffaf075000],  sp=0x00007fffaf072560,  free space=2037k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [hsdis-riscv64.so+0xcbe84]  riscv_get_disassembler+0x1c
C  [hsdis-riscv64.so+0xc5bb6]  disassembler+0x36
C  [hsdis-riscv64.so+0x3b6ea]  setup_app_data+0x110
C  [hsdis-riscv64.so+0x3b0d0]  decode+0x2c
C  [hsdis-riscv64.so+0x3afea]  decode_instructions_virtual+0xbc
V  [libjvm.so+0x6f09c2]  decode_env::decode_instructions(unsigned char*, unsigned char*, unsigned char*)+0x238
V  [libjvm.so+0x6f14f2]  Disassembler::decode(unsigned char*, unsigned char*, outputStream*, AsmRemarks const*, long)+0x10c
V  [libjvm.so+0xe9c846]  StubCodeGenerator::stub_epilog(StubCodeDesc*)+0xea
V  [libjvm.so+0xe9ca80]  StubCodeMark::~StubCodeMark()+0x124
V  [libjvm.so+0x8cf36e]  ICacheStubGenerator::generate_icache_flush(int (**)(unsigned char*, int, int))+0x72
V  [libjvm.so+0x8cef06]  AbstractICache::initialize()+0x9a
V  [libjvm.so+0x8cf146]  icache_init()+0xc
V  [libjvm.so+0x5b4e40]  CodeCache::initialize()+0x1ba
V  [libjvm.so+0x5b4e6c]  codeCache_init()+0xc
V  [libjvm.so+0x8e13dc]  init_globals()+0x38
V  [libjvm.so+0xf3d58e]  Threads::create_vm(JavaVMInitArgs*, bool*)+0x348
V  [libjvm.so+0x9f32da]  JNI_CreateJavaVM_inner(JavaVM_**, void**, void*)+0xe0
V  [libjvm.so+0x9f34d4]  JNI_CreateJavaVM+0x2a
C  [libjli.so+0x6a82]  InitializeJVM+0x118  (java.c:1457)
C  [libjli.so+0x3f00]  JavaMain+0xa0  (java.c:413)
C  [libjli.so+0xa050]  ThreadJavaMain+0x24  (java_md.c:650)
C  [libc.so.6+0x6a450]
C  [libc.so.6+0xb7ef2]


siginfo: si_signo: 11 (SIGSEGV), si_code: 1 (SEGV_MAPERR), si_addr: 0x0000000000000350

FWIW, if I use the hsdis from https://builds.shipilev.net/hsdis/hsdis-riscv64.so <https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbuilds.shipilev.net%2Fhsdis%2Fhsdis-riscv64.so&data=05%7C01%7Czixian.cai%40anu.edu.au%7C33c79318a1244d1202f608daa9c0f2fc%7Ce37d725cab5c46249ae5f0533e486437%7C0%7C0%7C638008943428531908%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2FyJ9RFlwnkhXCWZdihUsHQtMdHlpMCqL8fo26Czakmc%3D&reserved=0><https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbuilds.shipilev.net%2Fhsdis%2Fhsdis-riscv64.so&data=05%7C01%7Czixian.cai%40anu.edu.au%7C33c79318a1244d1202f608daa9c0f2fc%7Ce37d725cab5c46249ae5f0533e486437%7C0%7C0%7C638008943428531908%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2FyJ9RFlwnkhXCWZdihUsHQtMdHlpMCqL8fo26Czakmc%3D&reserved=0%3e>, everything works fine.

Sincerely,
Zixian
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