diff options
Diffstat (limited to 'libgcc')
| -rw-r--r-- | libgcc/ChangeLog | 7 | ||||
| -rw-r--r-- | libgcc/config/xtensa/lib2funcs.S | 30 |
2 files changed, 30 insertions, 7 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 5ce8f72..9b25699 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,3 +1,10 @@ +2015-08-18 Max Filippov <jcmvbkbc@gmail.com> + + * 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. + 2015-08-14 Yuri Rumyantsev <ysrumyan@gmail.com> * config/i386/cpuinfo.c (enum processor_subtypes): Add skylake. diff --git a/libgcc/config/xtensa/lib2funcs.S b/libgcc/config/xtensa/lib2funcs.S index 4d451c8..ef0703f 100644 --- a/libgcc/config/xtensa/lib2funcs.S +++ b/libgcc/config/xtensa/lib2funcs.S @@ -34,10 +34,29 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see .global __xtensa_libgcc_window_spill .type __xtensa_libgcc_window_spill,@function __xtensa_libgcc_window_spill: - entry sp, 32 - movi a2, 0 - syscall + entry sp, 48 +#if XCHAL_NUM_AREGS > 16 + call12 1f + retw + .align 4 +1: + .rept (XCHAL_NUM_AREGS - 24) / 12 + _entry sp, 48 + mov a12, a0 + .endr + _entry sp, 16 +#if XCHAL_NUM_AREGS % 12 == 0 + mov a4, a4 +#elif XCHAL_NUM_AREGS % 12 == 4 + mov a8, a8 +#elif XCHAL_NUM_AREGS % 12 == 8 + mov a12, a12 +#endif retw +#else + mov a8, a8 + retw +#endif .size __xtensa_libgcc_window_spill, .-__xtensa_libgcc_window_spill #endif @@ -61,10 +80,7 @@ __xtensa_nonlocal_goto: entry sp, 32 /* Flush registers. */ - mov a5, a2 - movi a2, 0 - syscall - mov a2, a5 + call8 __xtensa_libgcc_window_spill /* Because the save area for a0-a3 is stored one frame below the one identified by a2, the only way to restore those |