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| author | dim <dim@FreeBSD.org> | 2016-02-06 13:39:20 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2016-02-06 13:39:20 +0000 |
| commit | 9c27ec33f2c82fe6c60c9c375a88f96a1e10a6a2 (patch) | |
| tree | 4efb8604227ede935238eb1c67b626da1265d459 /contrib/compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc | |
| parent | aef1771e36f9842a113b9905d0d5926fe9d694aa (diff) | |
| parent | 75958af7df18c2ae942829da1a8cf3b5bbcaeff6 (diff) | |
| download | FreeBSD-src-9c27ec33f2c82fe6c60c9c375a88f96a1e10a6a2.zip FreeBSD-src-9c27ec33f2c82fe6c60c9c375a88f96a1e10a6a2.tar.gz | |
Merge compiler-rt release_38 branch r258968.
Note that there is still a problem on amd64, causing SIGBUS in the early
startup of Address Sanitizer. This is being investigated.
Diffstat (limited to 'contrib/compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc')
| -rw-r--r-- | contrib/compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/contrib/compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc b/contrib/compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc index ea03715..213aced 100644 --- a/contrib/compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc +++ b/contrib/compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc @@ -78,6 +78,15 @@ void DTLS_Destroy() { DTLS_Deallocate(dtls.dtv, s); } +#if defined(__powerpc64__) +// This is glibc's TLS_DTV_OFFSET: +// "Dynamic thread vector pointers point 0x8000 past the start of each +// TLS block." +static const uptr kDtvOffset = 0x8000; +#else +static const uptr kDtvOffset = 0; +#endif + DTLS::DTV *DTLS_on_tls_get_addr(void *arg_void, void *res, uptr static_tls_begin, uptr static_tls_end) { if (!common_flags()->intercept_tls_get_addr) return 0; @@ -87,7 +96,7 @@ DTLS::DTV *DTLS_on_tls_get_addr(void *arg_void, void *res, DTLS_Resize(dso_id + 1); if (dtls.dtv[dso_id].beg) return 0; uptr tls_size = 0; - uptr tls_beg = reinterpret_cast<uptr>(res) - arg->offset; + uptr tls_beg = reinterpret_cast<uptr>(res) - arg->offset - kDtvOffset; VPrintf(2, "__tls_get_addr: %p {%p,%p} => %p; tls_beg: %p; sp: %p " "num_live_dtls %zd\n", arg, arg->dso_id, arg->offset, res, tls_beg, &tls_beg, |
