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author | Rich Felker <dalias@aerifal.cx> | 2015-04-13 18:07:10 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2015-04-13 18:07:10 -0400 |
commit | 0f66fcec2584706116df70cf1db7f2f8815f4444 (patch) | |
tree | 72d239c570ee75e3abbe8f1c390470f29b61073c /src/internal/shgetc.c | |
parent | f630df09b1fd954eda16e2f779da0b5ecc9d80d3 (diff) | |
download | musl-0f66fcec2584706116df70cf1db7f2f8815f4444.tar.gz musl-0f66fcec2584706116df70cf1db7f2f8815f4444.tar.xz musl-0f66fcec2584706116df70cf1db7f2f8815f4444.zip |
stabilize dynamic linker's layout of static TLS
previously, the layout of the static TLS block was perturbed by the size of the dtv; dtv size increasing from 0 to 1 perturbed both TLS arch types, and the TLS-above-TP type's layout was perturbed by the specific number of dtv slots (libraries with TLS). this behavior made it virtually impossible to setup a tentative thread pointer address before loading libraries and keep it unchanged as long as the libraries' TLS size/alignment requirements fit. the new code fixes the location of the dtv and pthread structure at opposite ends of the static TLS block so that they will not move unless size or alignment changes.
Diffstat (limited to 'src/internal/shgetc.c')
0 files changed, 0 insertions, 0 deletions