diff options
Diffstat (limited to 'arch/loongarch/kernel/fpu.S')
| -rw-r--r-- | arch/loongarch/kernel/fpu.S | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/fpu.S b/arch/loongarch/kernel/fpu.S index 28caf416ae36..f225dcc5b530 100644 --- a/arch/loongarch/kernel/fpu.S +++ b/arch/loongarch/kernel/fpu.S @@ -96,6 +96,49 @@ EX fld.d $f31, \base, (31 * FPU_REG_WIDTH) .endm +#ifdef CONFIG_32BIT + .macro sc_save_fcc thread tmp0 tmp1 + movcf2gr \tmp0, $fcc0 + move \tmp1, \tmp0 + movcf2gr \tmp0, $fcc1 + bstrins.w \tmp1, \tmp0, 15, 8 + movcf2gr \tmp0, $fcc2 + bstrins.w \tmp1, \tmp0, 23, 16 + movcf2gr \tmp0, $fcc3 + bstrins.w \tmp1, \tmp0, 31, 24 + EX st.w \tmp1, \thread, THREAD_FCC + movcf2gr \tmp0, $fcc4 + move \tmp1, \tmp0 + movcf2gr \tmp0, $fcc5 + bstrins.w \tmp1, \tmp0, 15, 8 + movcf2gr \tmp0, $fcc6 + bstrins.w \tmp1, \tmp0, 23, 16 + movcf2gr \tmp0, $fcc7 + bstrins.w \tmp1, \tmp0, 31, 24 + EX st.w \tmp1, \thread, (THREAD_FCC + 4) + .endm + + .macro sc_restore_fcc thread tmp0 tmp1 + EX ld.w \tmp0, \thread, THREAD_FCC + bstrpick.w \tmp1, \tmp0, 7, 0 + movgr2cf $fcc0, \tmp1 + bstrpick.w \tmp1, \tmp0, 15, 8 + movgr2cf $fcc1, \tmp1 + bstrpick.w \tmp1, \tmp0, 23, 16 + movgr2cf $fcc2, \tmp1 + bstrpick.w \tmp1, \tmp0, 31, 24 + movgr2cf $fcc3, \tmp1 + EX ld.w \tmp0, \thread, (THREAD_FCC + 4) + bstrpick.w \tmp1, \tmp0, 7, 0 + movgr2cf $fcc4, \tmp1 + bstrpick.w \tmp1, \tmp0, 15, 8 + movgr2cf $fcc5, \tmp1 + bstrpick.w \tmp1, \tmp0, 23, 16 + movgr2cf $fcc6, \tmp1 + bstrpick.w \tmp1, \tmp0, 31, 24 + movgr2cf $fcc7, \tmp1 + .endm +#else .macro sc_save_fcc base, tmp0, tmp1 movcf2gr \tmp0, $fcc0 move \tmp1, \tmp0 @@ -135,6 +178,7 @@ bstrpick.d \tmp1, \tmp0, 63, 56 movgr2cf $fcc7, \tmp1 .endm +#endif .macro sc_save_fcsr base, tmp0 movfcsr2gr \tmp0, fcsr0 @@ -410,6 +454,72 @@ SYM_FUNC_START(_init_fpu) li.w t1, -1 # SNaN +#ifdef CONFIG_32BIT + movgr2fr.w $f0, t1 + movgr2frh.w $f0, t1 + movgr2fr.w $f1, t1 + movgr2frh.w $f1, t1 + movgr2fr.w $f2, t1 + movgr2frh.w $f2, t1 + movgr2fr.w $f3, t1 + movgr2frh.w $f3, t1 + movgr2fr.w $f4, t1 + movgr2frh.w $f4, t1 + movgr2fr.w $f5, t1 + movgr2frh.w $f5, t1 + movgr2fr.w $f6, t1 + movgr2frh.w $f6, t1 + movgr2fr.w $f7, t1 + movgr2frh.w $f7, t1 + movgr2fr.w $f8, t1 + movgr2frh.w $f8, t1 + movgr2fr.w $f9, t1 + movgr2frh.w $f9, t1 + movgr2fr.w $f10, t1 + movgr2frh.w $f10, t1 + movgr2fr.w $f11, t1 + movgr2frh.w $f11, t1 + movgr2fr.w $f12, t1 + movgr2frh.w $f12, t1 + movgr2fr.w $f13, t1 + movgr2frh.w $f13, t1 + movgr2fr.w $f14, t1 + movgr2frh.w $f14, t1 + movgr2fr.w $f15, t1 + movgr2frh.w $f15, t1 + movgr2fr.w $f16, t1 + movgr2frh.w $f16, t1 + movgr2fr.w $f17, t1 + movgr2frh.w $f17, t1 + movgr2fr.w $f18, t1 + movgr2frh.w $f18, t1 + movgr2fr.w $f19, t1 + movgr2frh.w $f19, t1 + movgr2fr.w $f20, t1 + movgr2frh.w $f20, t1 + movgr2fr.w $f21, t1 + movgr2frh.w $f21, t1 + movgr2fr.w $f22, t1 + movgr2frh.w $f22, t1 + movgr2fr.w $f23, t1 + movgr2frh.w $f23, t1 + movgr2fr.w $f24, t1 + movgr2frh.w $f24, t1 + movgr2fr.w $f25, t1 + movgr2frh.w $f25, t1 + movgr2fr.w $f26, t1 + movgr2frh.w $f26, t1 + movgr2fr.w $f27, t1 + movgr2frh.w $f27, t1 + movgr2fr.w $f28, t1 + movgr2frh.w $f28, t1 + movgr2fr.w $f29, t1 + movgr2frh.w $f29, t1 + movgr2fr.w $f30, t1 + movgr2frh.w $f30, t1 + movgr2fr.w $f31, t1 + movgr2frh.w $f31, t1 +#else movgr2fr.d $f0, t1 movgr2fr.d $f1, t1 movgr2fr.d $f2, t1 @@ -442,6 +552,7 @@ SYM_FUNC_START(_init_fpu) movgr2fr.d $f29, t1 movgr2fr.d $f30, t1 movgr2fr.d $f31, t1 +#endif jr ra SYM_FUNC_END(_init_fpu) |