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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2016-10-01 17:38:24 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2016-10-01 17:38:24 +0200 |
| commit | a14b9578ee5297d954103e05d7b2d322816ddd8f (patch) | |
| tree | 93b7c2b6bd7de8a4dedaf399088257e0660959b8 /backend/SelectDivproof.v | |
| parent | 3bef0962079cf971673b4267b0142bd5fe092509 (diff) | |
| download | compcert-kvx-a14b9578ee5297d954103e05d7b2d322816ddd8f.tar.gz compcert-kvx-a14b9578ee5297d954103e05d7b2d322816ddd8f.zip | |
Support for 64-bit architectures: x86 in 64-bit mode
This commit enriches the IA32 port so that it supports x86 processors in 64-bit mode as well as in 32-bit mode, depending on the value of Archi.ptr64, which itself is set from the configuration model.
To activate x86-64 bit support, configure with "x86_64-linux".
Main steps:
- Enrich Op.v and Asm.v with 64-bit operations
- SelectLong: in 64-bit mode, use 64-bit operations directly; in 32-bit mode, fall back on the old implementation based on pairs of 32-bit integers
- Conventions1: support x86-64 ABI in addition to the 32-bit ABI.
- Add support for the new 64-bit operations everywhere.
- runtime/x86_64: implementation of the supporting library appropriate for x86 in 64-bit mode
To do:
- More optimizations are possible on 64-bit integer arithmetic operations.
- Could add new chunks to load, say, an unsigned byte into a 64-bit long
(currently we load as a 32-bit int then zero-extend).
- Implements the wrong ABI for struct passing.
Diffstat (limited to 'backend/SelectDivproof.v')
0 files changed, 0 insertions, 0 deletions