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| author | Rich Felker <dalias@aerifal.cx> | 2012-07-27 00:14:57 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-07-27 00:14:57 -0400 |
| commit | e1b9c1b01be294cc2865acfe33544d5e5cc50eb4 (patch) | |
| tree | b3efaa1aa0c3ec7ce04dd43bc5c02bd1f26f6c1c /src | |
| parent | 07e62953c768f9f09485388c22ffaed98d11d676 (diff) | |
| download | musl-e1b9c1b01be294cc2865acfe33544d5e5cc50eb4.tar.gz musl-e1b9c1b01be294cc2865acfe33544d5e5cc50eb4.tar.bz2 musl-e1b9c1b01be294cc2865acfe33544d5e5cc50eb4.tar.xz musl-e1b9c1b01be294cc2865acfe33544d5e5cc50eb4.zip | |
save AT_HWCAP from auxv for subsequent use in machine-specific code
it's expected that this will be needed/useful only in asm, so I've
given it its own symbol that can be addressed in pc-relative ways from
asm rather than adding a field in the __libc structure which would
require hard-coding the offset wherever it's used.
Diffstat (limited to 'src')
| -rw-r--r-- | src/env/__init_security.c | 1 | ||||
| -rw-r--r-- | src/internal/libc.c | 2 | ||||
| -rw-r--r-- | src/internal/libc.h | 1 |
3 files changed, 4 insertions, 0 deletions
diff --git a/src/env/__init_security.c b/src/env/__init_security.c index 59d546fa..f9de9c62 100644 --- a/src/env/__init_security.c +++ b/src/env/__init_security.c @@ -23,6 +23,7 @@ void __init_security(size_t *auxv) #endif for (; auxv[0]; auxv+=2) if (auxv[0]<AUX_CNT) aux[auxv[0]] = auxv[1]; + __hwcap = aux[AT_HWCAP]; if (aux[AT_UID]==aux[AT_EUID] && aux[AT_GID]==aux[AT_EGID] && !aux[AT_SECURE]) return; diff --git a/src/internal/libc.c b/src/internal/libc.c index c1e21ca0..004c1a33 100644 --- a/src/internal/libc.c +++ b/src/internal/libc.c @@ -13,3 +13,5 @@ struct __libc __libc; #ifdef BROKEN_VISIBILITY __asm__(".hidden __libc"); #endif + +size_t __hwcap; diff --git a/src/internal/libc.h b/src/internal/libc.h index 53e4e826..ea863d67 100644 --- a/src/internal/libc.h +++ b/src/internal/libc.h @@ -18,6 +18,7 @@ struct __libc { int ofl_lock[2]; }; +extern size_t __hwcap; #if !defined(__PIC__) || 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__) |