| commit | 16d2ea4c821502948d193a152c8b151f5497a0d3 | |
| author | Ulrich Drepper <drepper@redhat.com> | |
| Sun, 26 Jul 2009 23:10:00 +0000 (26 16:10 -0700) | ||
| committer | Ulrich Drepper <drepper@redhat.com> | |
| Sun, 26 Jul 2009 23:10:00 +0000 (26 16:10 -0700) | ||
| tree | b2e680691addcd8cbfc8f4be5d0d6d7ca27baf49 | treesnapshot (tar.gz zip) |
| parent | dc8e5eb6edc936647b8135e7176df5455e5ff112 | commitdiff |
Make sure no code in ld.so uses xmm/ymm registers on x86-64.
This patch introduces a test to make sure no function modifies the
xmm/ymm registers. With the exception of the auditing functions.
The test is probably too pessimistic. All code linked into ld.so
is checked. Perhaps at some point the callgraph starting from
_dl_fixup and _dl_profile_fixup is checked and we can start using
faster SSE-using functions in parts of ld.so.
This patch introduces a test to make sure no function modifies the
xmm/ymm registers. With the exception of the auditing functions.
The test is probably too pessimistic. All code linked into ld.so
is checked. Perhaps at some point the callgraph starting from
_dl_fixup and _dl_profile_fixup is checked and we can start using
faster SSE-using functions in parts of ld.so.
| ChangeLog | diffblobblamehistory | |
| sysdeps/x86_64/Makefile | diffblobblamehistory | |
| sysdeps/x86_64/multiarch/rtld-rawmemchr.c | [new file with mode: 0644] | blob |
| sysdeps/x86_64/multiarch/rtld-strlen.S | [new file with mode: 0644] | blob |
| sysdeps/x86_64/rtld-memchr.c | [new file with mode: 0644] | blob |
| sysdeps/x86_64/rtld-memcmp.c | [new file with mode: 0644] | blob |
| sysdeps/x86_64/rtld-rawmemchr.c | [new file with mode: 0644] | blob |
| sysdeps/x86_64/rtld-strchr.S | [new file with mode: 0644] | blob |
| sysdeps/x86_64/rtld-strcmp.S | [new file with mode: 0644] | blob |
| sysdeps/x86_64/rtld-strlen.S | [new file with mode: 0644] | blob |
| sysdeps/x86_64/tst-xmmymm.sh | [new file with mode: 0755] | blob |