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ELF loader fails to load shared object on ThunderX2 running RHEL7
Simple test:
hello.c
include <stdio.h>
int main(int argc, char* argv[])
{
{
printf("Hello World... \n");
}
return 0;
}
when compiled with :
*Compiler
https://developer.arm.com/tools-and-software/server-and-hpc/arm-architecture-tools/arm-allinea-studio/download
Arm-Compiler-for-HPC_19.3_RHEL_7_aarch64.tar
*Running:
1) with -armpl
armclang -armpl hello.c
./qemu/build/aarch64-linux-user/qemu-aarch64 a.out
2) without flag
armclang hello.c
./qemu/build/aarch64-linux-user/qemu-aarch64 a.out
•With Docker image:
CentOS Linux release 7.7.1908 (AltArch)
*Two different machines:
AArch64, Taishan. tsv110, Kunpeng 920, ARMv8.2-A
AArch64, Taishan 2280, Cortex-A72, ARMv8-A
*QEMU 4.0
qemu-aarch64 version 4.1.91 (v4.2.0-rc1)
Results:
****Taishan 2280 Cortex-A72
Running
1)with -armpl flag with and without the docker
WORKS-> Hello World...
-> ldd a.out
ldd a.out
linux-vdso.so.1 => (0x0000ffffbc6a2000)
libamath_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libamath_generic.so (0x0000ffffbc544000)
libm.so.6 => /lib64/libm.so.6 (0x0000ffffbc493000)
libastring_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libastring_generic.so (0x0000ffffbc472000) libarmflang.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/libarmflang.so (0x0000ffffbbfd3000)
libomp.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/libomp.so (0x0000ffffbbef5000)
librt.so.1 => /lib64/librt.so.1 (0x0000ffffbbed4000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x0000ffffbbe9f000)
libarmpl_lp64_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libarmpl_lp64_generic.so (0x0000ffffb3306000)
libc.so.6 => /lib64/libc.so.6 (0x0000ffffb3180000)
libstdc++.so.6 => /scratch/gcc-9.2.0_Generic-AArch64_RHEL-8_aarch64-linux/lib64/libstdc++.so.6 (0x0000ffffb2f30000)
libgcc_s.so.1 => /scratch/gcc-9.2.0_Generic-AArch64_RHEL-8_aarch64-linux/lib64/libgcc_s.so.1 (0x0000ffffb2eff000)
libdl.so.2 => /lib64/libdl.so.2 (0x0000ffffb2ede000)
/lib/ld-linux-aarch64.so.1 (0x0000ffffbc674000)
Running
2) without -armpl flag with and without the docker
WORKS -> Hello World...
-> ldd a.out
ldd a.out
linux-vdso.so.1 => (0x0000ffffa6895000)
libastring_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libastring_generic.so (0x0000ffffa6846000)
libc.so.6 => /lib64/libc.so.6 (0x0000ffffa66c0000)
/lib/ld-linux-aarch64.so.1 (0x0000ffffa6867000)
****Taishan - tsv110 Kunpeng 920
For Running
1)with -armpl flag with and without the docker
DOES NOT WORK -> with and without Docker
-> It shows : qemu:handle_cpu_signal received signal outside vCPU
context @ pc=0xffffaaa8844a
-> ldd a.out
ldd a.out
linux-vdso.so.1 => (0x0000ffffad4b0000)
libamath_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libamath_generic.so (0x0000ffffad370000)
libm.so.6 => /lib64/libm.so.6 (0x0000ffffad2a0000)
libastring_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libastring_generic.so (0x0000ffffad270000) libarmflang.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/libarmflang.so (0x0000ffffacdd0000)
libomp.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/libomp.so (0x0000ffffaccf0000)
librt.so.1 => /lib64/librt.so.1 (0x0000ffffaccc0000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x0000ffffacc80000)
libarmpl_lp64_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libarmpl_lp64_generic.so (0x0000ffffa40e0000)
libc.so.6 => /lib64/libc.so.6 (0x0000ffffa3f50000)
libstdc++.so.6 => /scratch/gcc-9.2.0_Generic-AArch64_RHEL-8_aarch64-linux/lib64/libstdc++.so.6 (0x0000ffffa3d00000)
libgcc_s.so.1 => /scratch/gcc-9.2.0_Generic-AArch64_RHEL-8_aarch64-linux/lib64/libgcc_s.so.1 (0x0000ffffa3cc0000)
libdl.so.2 => /lib64/libdl.so.2 (0x0000ffffa3c90000)
/lib/ld-linux-aarch64.so.1 (0x0000ffffad4c0000)
Running
2) without -armpl flag with and without the docker
WORKS -> Hello World..
-> ldd a.out
ldd a.out
linux-vdso.so.1 => (0x0000ffff880c0000)
libastring_generic.so => /scratch/arm-linux-compiler-19.3_Generic-AArch64_RHEL-8_aarch64-linux/lib/clang/9.0.1/armpl_links/lib/libastring_generic.so (0x0000ffff88080000)
libc.so.6 => /lib64/libc.so.6 (0x0000ffff87ee0000)
/lib/ld-linux-aarch64.so.1 (0x0000ffff880d0000)
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