| author |  Kenta Iwasaki <kenta@lithdew.net> 2021-11-18 10:35:00+09:00 |
| committer |  Andrew Kelley <andrew@ziglang.org> 2021-11-18 13:16:35-05:00 |
| log | 00966b7258bdf56fe2cc653b30b4d4352d8fe14f |
| tree | b83b8ada56e9660f01482babb74f0cb54a0c3ccf |
| parent | 2fefd4ea8e031e82e5d9228638dc48aa213a102e |
compiler_rt: disable spinlocks for atomic instrinsics for bpf
The BPF target does not support mutable global variables. Mark the BPF
target as a target that does not support atomic variables in order to
avoid including the global spinlock table provided in compiler_rt.1 files changed, 1 insertions(+), 1 deletions(-)
lib- std
- special
- compiler_rt
lib/std/special/compiler_rt/atomics.zig+1-1
| ... | ... | @@ -10,7 +10,7 @@ const linkage: std.builtin.GlobalLinkage = if (builtin.is_test) .Internal else . |
| 10 | 10 | // detail to keep the export logic clean and because we need some kind of CAS to |
| 11 | 11 | // implement the spinlocks. |
| 12 | 12 | const supports_atomic_ops = switch (arch) { |
| 13 | .msp430, .avr => false, | |
| 13 | .msp430, .avr, .bpfel, .bpfeb => false, | |
| 14 | 14 | .arm, .armeb, .thumb, .thumbeb => |
| 15 | 15 | // The ARM v6m ISA has no ldrex/strex and so it's impossible to do CAS |
| 16 | 16 | // operations (unless we're targeting Linux, the kernel provides a way to |