Previously, updating the `SYS` enum for each architecture required
manually looking at the syscall tables and inserting any new additions.
This commit adds a tool, `generate_linux_syscalls.zig`, that automates
this process using the syscall tables in the Linux source tree. On
architectures without a table, it runs `zig cc` as a pre-processor to
extract the system-call numbers from the Linux headers.
Most of the work here was additions to zig.h. The lowering code is
mainly responsible for calling the correct function name depending on
the operand type.
Some of the compiler-rt calls here are not implemented yet and are
non-standard symbols due to the C programming language not needing them.
After this commit, the behavior tests with -ofmt=c are passing again.
Rename all references of sparcv9 to sparc64, to make Zig align more with
other projects. Also, added new function to convert glibc arch name to Zig
arch name, since it refers to the architecture as sparcv9.
This is based on the suggestion by @kubkon in PR 11847.
(https://github.com/ziglang/zig/pull/11487#pullrequestreview-963761757)
the list parameter should be a multi-item pointer rather than a single-item
pointer. see: https://linux.die.net/man/2/setgroups
> setgroups() sets the supplementary group IDs for the calling process...
> the size argument specifies the number of supplementary group IDs in the buffer pointed to by list.
- Test: Fix bucket counting. Previously, the first hit was not counted.
This off-by-one error slightly increased the mean of `*_total_variance`,
which decreased the acceptance rate for a particular random seed
from 95% to 92.6%. (Irrelevant for test failure because the seed is fixed.)
- Improve comments
EnvMap provides the same API as the previously used BufMap (besides `putMove` and `getPtr`), so usage sites of `getEnvMap` can usually remain unchanged.
For non-Windows, EnvMap is a wrapper around BufMap. On Windows, it uses a new EnvMapWindows to handle some Windows-specific behavior:
- Lookups use Unicode-aware case insensitivity (but `get` cannot return an error because EnvMapWindows has an internal buffer to use for lookup conversions)
- Canonical names are returned when iterating the EnvMap
Fixes#10561, closes#4603
* Rename std.builtin.GlobalVisibility to std.builtin.SymbolVisibility
* Add missing compile error. From the LLVM language reference: "A
symbol with internal or private linkage must have default
visibility."
Andrew Kelley