C2 compiler gets SIGILL/ILL_ILLOPC

[Edward Nevill]

Hi John,

The faulting instruction is

pldw	[r6, #128]

I have tested this instruction on an armv7l and it seems to work fine.

Here is my simple test program

--- test_pld.c ---
extern void do_pld(unsigned *p);

unsigned d[128];

int main(void)
{
	do_pld(d);
}
------------------

--- pld.s ---
	.text
	.global	do_pld
do_pld:
	pldw	[r0, #128]
	mov	pc, lr
-------------

compile with

gcc -o test_pld test_pld.c pld.s
./test_pld

For indo here is my /proc/cpuinfo

processor	: 0
model name	: ARMv7 Processor rev 4 (v7l)
BogoMIPS	: 48.00
Features	: swp half thumb fastmult vfp edsp thumbee neon vfpv3
tls vfpv4 idiva idivt 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xc0f
CPU revision	: 4

All the best,
Ed.


On Wed, 2018-05-02 at 17:29 -0700, John Neffenger wrote:
> I'm getting fatal errors in the OpenJDK 10 and 11 HotSpot Server VMs 
> with a simple "Hello World" Swing application when running on a
> physical 
> ARMv7 processor, yet I'm not seeing any such errors on an emulated
> ARMv7 
> processor under QEMU/KVM.
> 
> Is there some feature required by the latest HotSpot Server VM that
> is 
> not present in my Freescale (NXP) i.MX507 Multimedia Application 
> Processor? Could an older Linux kernel cause this error?
> 
> Details on the errors, workarounds, Java versions, Linux kernel 
> versions, and CPU information are below.
> 
> Thank you,
> John
> 
>