dmd Arm64 - first function compile!

[Brad Roberts]

On 6/3/2024 11:38 AM, Walter Bright via Digitalmars-d wrote:
> On 6/3/2024 9:41 AM, Ben Jones wrote:
>> On Sunday, 2 June 2024 at 06:30:18 UTC, Walter Bright wrote:
>>>
>>
>> What stuff can other contributors be helping with on this?
>>
> 
> 1. add floating point instructions, SIMD, SVE and SME instructions to 
> the disasmarm.d. It only currently does the Base Instructions.
> 
> http://www.scs.stanford.edu/~zyedidia/arm64/index.html
> 
> 
> 2. using the Gnu assembler, `as`, write an example of every instruction. 
> Collect the binary hex emitted, and add them as unit tests to the 
> disassembler.
> 
> 
> 3. write an inline assembler. Much like the arm disassembler, this will 
> be totally different from the way the x86 assembler works. I suggest 
> making it work analogously to the way disasmarm.d works. The list of 
> instructions written for (2) can be reused as the test suite for it.
> 
> 
> With the disassembler verified against `as`, and the inline assembler 
> verified against the disassembler, then the instructions generated by 
> the compiler can be much more easily verified.

You mean something like:

https://github.com/braddr/dmd/blob/arm/test/compilable/arm_iasm.d
https://github.com/braddr/dmd/blob/arm/src/iasm_arm.c

They only cover a subset of the instructions based on an older version 
of the instruction set, but that still covers probably 90% of both 
assembly and tests.  It doesn't cover disassembly, as I just used 
objdump from the standard gnu dev tool set.