diff options
Diffstat (limited to 'arch/s390/lib/tishift.S')
| -rw-r--r-- | arch/s390/lib/tishift.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/s390/lib/tishift.S b/arch/s390/lib/tishift.S new file mode 100644 index 0000000000..96214f51f4 --- /dev/null +++ b/arch/s390/lib/tishift.S @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#include <linux/export.h> +#include <linux/linkage.h> +#include <asm/nospec-insn.h> + + .section .noinstr.text, "ax" + + GEN_BR_THUNK %r14 + +SYM_FUNC_START(__ashlti3) + lmg %r0,%r1,0(%r3) + cije %r4,0,1f + lhi %r3,64 + sr %r3,%r4 + jnh 0f + srlg %r3,%r1,0(%r3) + sllg %r0,%r0,0(%r4) + sllg %r1,%r1,0(%r4) + ogr %r0,%r3 + j 1f +0: sllg %r0,%r1,-64(%r4) + lghi %r1,0 +1: stmg %r0,%r1,0(%r2) + BR_EX %r14 +SYM_FUNC_END(__ashlti3) +EXPORT_SYMBOL(__ashlti3) + +SYM_FUNC_START(__ashrti3) + lmg %r0,%r1,0(%r3) + cije %r4,0,1f + lhi %r3,64 + sr %r3,%r4 + jnh 0f + sllg %r3,%r0,0(%r3) + srlg %r1,%r1,0(%r4) + srag %r0,%r0,0(%r4) + ogr %r1,%r3 + j 1f +0: srag %r1,%r0,-64(%r4) + srag %r0,%r0,63 +1: stmg %r0,%r1,0(%r2) + BR_EX %r14 +SYM_FUNC_END(__ashrti3) +EXPORT_SYMBOL(__ashrti3) + +SYM_FUNC_START(__lshrti3) + lmg %r0,%r1,0(%r3) + cije %r4,0,1f + lhi %r3,64 + sr %r3,%r4 + jnh 0f + sllg %r3,%r0,0(%r3) + srlg %r1,%r1,0(%r4) + srlg %r0,%r0,0(%r4) + ogr %r1,%r3 + j 1f +0: srlg %r1,%r0,-64(%r4) + lghi %r0,0 +1: stmg %r0,%r1,0(%r2) + BR_EX %r14 +SYM_FUNC_END(__lshrti3) +EXPORT_SYMBOL(__lshrti3) |