Re: Porting to arm/aarch64

[Daniel Diaz]

Hi Jasper,

Sorry for the late reply,

You can have a look at the PORTING file which gives some information about adding a new architecture. 

The main task is to write a mapper from MiniAssembly to Asm. See example files in src/Ma2Asm which contains mapper MA->ASM for various architectures. 

The mappers are written in C (it is a good idea to use another mapper as basis) .Maybe look at the file mips_irix.c file.

I generally look at the asm generated by gcc (using various optimization flags in order to understand the asm generated, -O0 to -O3).
For this you can look at src/Ma2Asm/FromC. Do a make (modify Makefile to test with various CFLAGS). It compiles asm_inst.c to asm ; the study of asm_inst.s gives you hints about the translation of MA instructions.
Maybe you need to adapt the asm_inst.c file.
Basically it contains C functions whose translation to asm helps you to write the mapper (the name of C functions are useful to know what Ma instruction it corresponds).

Don’t hesitate to write me directly if you need more help (by mail to Daniel.Diaz@univ-paris1.fr).

Daniel

Le 30 mai 2020 à 16:39, Jasper Taylor <jasper@simulistics.com> a écrit :

Hi all,

I am thinking about trying to port GNU prolog to the ARM architecture (linux os). Before I get started, has anyone already had a go at this, if so, how far did you get and what problems did you encounter?

Thanks for reading

    --Jasper