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| author | Rich Felker <dalias@aerifal.cx> | 2012-10-11 22:47:07 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-10-11 22:47:07 -0400 |
| commit | 12e9b4faf68a1a02ebf5ad69c03ac10f170f14cb (patch) | |
| tree | f206db332e670791be0120cb21cc5eee9bc23574 /src/env/__libc_start_main.c | |
| parent | f2b1f1af83e96f8f98fbf2a5c663d8d058f2a66d (diff) | |
| download | musl-12e9b4faf68a1a02ebf5ad69c03ac10f170f14cb.tar.gz | |
i386 vsyscall support (vdso-provided sysenter/syscall instruction based)
this doubles the performance of the fastest syscalls on the atom I
tested it on; improvement is reportedly much more dramatic on
worst-case cpus. cannot be used for cancellable syscalls.
Diffstat (limited to 'src/env/__libc_start_main.c')
| -rw-r--r-- | src/env/__libc_start_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/env/__libc_start_main.c b/src/env/__libc_start_main.c index e350fdb8..ee10b0de 100644 --- a/src/env/__libc_start_main.c +++ b/src/env/__libc_start_main.c @@ -6,6 +6,8 @@ void __init_security(size_t *); #define AUX_CNT 38 +extern size_t __hwcap, __sysinfo; + void __init_libc(char **envp) { size_t i, *auxv, aux[AUX_CNT] = { 0 }; @@ -14,6 +16,7 @@ void __init_libc(char **envp) libc.auxv = auxv = (void *)(envp+i+1); for (i=0; auxv[i]; i+=2) if (auxv[i]<AUX_CNT) aux[auxv[i]] = auxv[i+1]; __hwcap = aux[AT_HWCAP]; + __sysinfo = aux[AT_SYSINFO]; __init_tls(aux); __init_security(aux); |