| commit | 863356eada6aec2742740b12fae686073dd7e6ca | |
| author | jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Tue, 18 Aug 2015 01:05:44 +0000 (18 01:05 +0000) | ||
| committer | jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Tue, 18 Aug 2015 01:05:44 +0000 (18 01:05 +0000) | ||
| tree | 845563e546aa52686bd12c1ff095df50de0a9c06 | treesnapshot (tar.gz zip) |
| parent | 85780966029f9c2263a225b534d8a7baf915fb59 | commitdiff |
xtensa: reimplement register spilling
Spilling windowed registers in userspace is much easier, more portable,
less error-prone and equally effective as in kernel. Now that register
spilling syscall is considered obsolete in the xtensa linux kernel
replace it with CALL12 followed by series of ENTRY in libgcc.
2015-08-18 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/lib2funcs.S (__xtensa_libgcc_window_spill): Use
CALL12 followed by series of ENTRY to spill windowed registers.
(__xtensa_nonlocal_goto): Call __xtensa_libgcc_window_spill
instead of making linux spill syscall.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@226962 138bc75d-0d04-0410-961f-82ee72b054a4
Spilling windowed registers in userspace is much easier, more portable,
less error-prone and equally effective as in kernel. Now that register
spilling syscall is considered obsolete in the xtensa linux kernel
replace it with CALL12 followed by series of ENTRY in libgcc.
2015-08-18 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/lib2funcs.S (__xtensa_libgcc_window_spill): Use
CALL12 followed by series of ENTRY to spill windowed registers.
(__xtensa_nonlocal_goto): Call __xtensa_libgcc_window_spill
instead of making linux spill syscall.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@226962 138bc75d-0d04-0410-961f-82ee72b054a4
| libgcc/ChangeLog | diffblobblamehistory | |
| libgcc/config/xtensa/lib2funcs.S | diffblobblamehistory |