diff options
| author | Andrew Turner <andrew@FreeBSD.org> | 2026-05-14 15:04:32 +0000 |
|---|---|---|
| committer | Andrew Turner <andrew@FreeBSD.org> | 2026-05-27 15:22:25 +0000 |
| commit | 48da01ad0b165b4dd38a4c22449216c1babc068b (patch) | |
| tree | 31667ea70d02c16c2e637a2bb5c4fa4e8d748ce8 | |
| parent | 4f876cec30afca1a32d0187fc81d6c3ffd1abc30 (diff) | |
arm64: Add a comment about HWCAP values
They must be identical to Linux. Document this requirement to allow
userspace to depend on this.
Sponsored by: Arm Ltd
| -rw-r--r-- | sys/arm64/include/elf.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/arm64/include/elf.h b/sys/arm64/include/elf.h index a5a90f8c7712..7940bb259256 100644 --- a/sys/arm64/include/elf.h +++ b/sys/arm64/include/elf.h @@ -96,6 +96,12 @@ __ElfType(Auxinfo); /* First __FreeBSD_version that supports Top Byte Ignore (TBI) */ #define TBI_VERSION 1500058 +/* + * The HWCAP values must be identical to Linux. Many userspace programs + * will define missing HWCAP values to the Linux version. To keep these + * working when we add the HWCAP it must be the same. + */ + /* HWCAP */ #define HWCAP_FP (1 << 0) #define HWCAP_ASIMD (1 << 1) |