RFR: JDK-8288824: [arm32] Display isetstate in register output

[kristylee88]

On Tue, 21 Jun 2022 08:25:52 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> When analyzing [JDK-8288719](https://bugs.openjdk.org/browse/JDK-8288719), to know the current isetstate was useful. It would be nice if that were printed clearly in the register output to save some mental cycles parsing CPSR.
> 
> Looks like this:
> 
> Registers:
>   r0  = 0x00000000
>   r1  = 0xbe9e7fb8
>   r2  = 0x00000000
>   r3  = 0xb6f860ac
>   r4  = 0xbe9e7fb8
>   r5  = 0xb6f864e0
>   r6  = 0xbe9e8060
>   r7  = 0xbe9e7fb0
>   r8  = 0xb6da8798
>   r9  = 0x00000000
>   r10 = 0x00000000
>   fp  = 0x00000001
>   r12 = 0xb6da87ec
>   sp  = 0xbe9e7fb0
>   lr  = 0xb6bc7dfb
>   pc  = 0xb6bc7dfa
>   cpsr = 0x800e0030
> isetstate: Thumb
> 
> Registers:
>   r0  = 0xb6be3664
>   r1  = 0xbe947c70
>   r2  = 0x00000058
>   r3  = 0xb6f3e000
>   r4  = 0xbe947c70
>   r5  = 0xb6f3f510
>   r6  = 0xb6c95bdc
>   r7  = 0xbe947d18
>   r8  = 0xbe947d98
>   r9  = 0x00000000
>   r10 = 0x00000000
>   fp  = 0xbe947d14
>   r12 = 0xb6c95f84
>   sp  = 0xbe947c68
>   lr  = 0xb6e97218
>   pc  = 0xb6793f3c
>   cpsr = 0x60000010
> isetstate: ARM 
> 
> 
> I refrained from parsing more information from the CPSR because I did not want to blow up the patch. ISETSTATE proved to be useful. More information can be added if needed.

Marked as reviewed by kristylee88 at github.com (no known OpenJDK username).

-------------

PR: https://git.openjdk.org/jdk/pull/9223