diff options
Diffstat (limited to 'arch/sh/lib/ashlsi3.S')
| -rw-r--r-- | arch/sh/lib/ashlsi3.S | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/sh/lib/ashlsi3.S b/arch/sh/lib/ashlsi3.S new file mode 100644 index 0000000..f971568 --- /dev/null +++ b/arch/sh/lib/ashlsi3.S @@ -0,0 +1,171 @@ +/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, + 2004, 2005, 2006 + Free Software Foundation, Inc. + + * SPDX-License-Identifier: GPL-2.0+ + */ + +!! libgcc routines for the Renesas / SuperH SH CPUs. +!! Contributed by Steve Chamberlain. +!! sac@cygnus.com + +!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines +!! recoded in assembly by Toshiyasu Morita +!! tm@netcom.com + +/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and + ELF local label prefixes by J"orn Rennecke + amylaar@cygnus.com */ + +! +! GLOBAL(ashlsi3) +! +! Entry: +! +! r4: Value to shift +! r5: Shifts +! +! Exit: +! +! r0: Result +! +! Destroys: +! +! (none) +! + .global __ashlsi3 + .align 2 +__ashlsi3: + mov #31,r0 + and r0,r5 + mova __ashlsi3_table,r0 + mov.b @(r0,r5),r5 +#ifdef __sh1__ + add r5,r0 + jmp @r0 +#else + braf r5 +#endif + mov r4,r0 + + .align 2 +__ashlsi3_table: + .byte __ashlsi3_0-__ashlsi3_table + .byte __ashlsi3_1-__ashlsi3_table + .byte __ashlsi3_2-__ashlsi3_table + .byte __ashlsi3_3-__ashlsi3_table + .byte __ashlsi3_4-__ashlsi3_table + .byte __ashlsi3_5-__ashlsi3_table + .byte __ashlsi3_6-__ashlsi3_table + .byte __ashlsi3_7-__ashlsi3_table + .byte __ashlsi3_8-__ashlsi3_table + .byte __ashlsi3_9-__ashlsi3_table + .byte __ashlsi3_10-__ashlsi3_table + .byte __ashlsi3_11-__ashlsi3_table + .byte __ashlsi3_12-__ashlsi3_table + .byte __ashlsi3_13-__ashlsi3_table + .byte __ashlsi3_14-__ashlsi3_table + .byte __ashlsi3_15-__ashlsi3_table + .byte __ashlsi3_16-__ashlsi3_table + .byte __ashlsi3_17-__ashlsi3_table + .byte __ashlsi3_18-__ashlsi3_table + .byte __ashlsi3_19-__ashlsi3_table + .byte __ashlsi3_20-__ashlsi3_table + .byte __ashlsi3_21-__ashlsi3_table + .byte __ashlsi3_22-__ashlsi3_table + .byte __ashlsi3_23-__ashlsi3_table + .byte __ashlsi3_24-__ashlsi3_table + .byte __ashlsi3_25-__ashlsi3_table + .byte __ashlsi3_26-__ashlsi3_table + .byte __ashlsi3_27-__ashlsi3_table + .byte __ashlsi3_28-__ashlsi3_table + .byte __ashlsi3_29-__ashlsi3_table + .byte __ashlsi3_30-__ashlsi3_table + .byte __ashlsi3_31-__ashlsi3_table + +__ashlsi3_6: + shll2 r0 +__ashlsi3_4: + shll2 r0 +__ashlsi3_2: + rts + shll2 r0 + +__ashlsi3_7: + shll2 r0 +__ashlsi3_5: + shll2 r0 +__ashlsi3_3: + shll2 r0 +__ashlsi3_1: + rts + shll r0 + +__ashlsi3_14: + shll2 r0 +__ashlsi3_12: + shll2 r0 +__ashlsi3_10: + shll2 r0 +__ashlsi3_8: + rts + shll8 r0 + +__ashlsi3_15: + shll2 r0 +__ashlsi3_13: + shll2 r0 +__ashlsi3_11: + shll2 r0 +__ashlsi3_9: + shll8 r0 + rts + shll r0 + +__ashlsi3_22: + shll2 r0 +__ashlsi3_20: + shll2 r0 +__ashlsi3_18: + shll2 r0 +__ashlsi3_16: + rts + shll16 r0 + +__ashlsi3_23: + shll2 r0 +__ashlsi3_21: + shll2 r0 +__ashlsi3_19: + shll2 r0 +__ashlsi3_17: + shll16 r0 + rts + shll r0 + +__ashlsi3_30: + shll2 r0 +__ashlsi3_28: + shll2 r0 +__ashlsi3_26: + shll2 r0 +__ashlsi3_24: + shll16 r0 + rts + shll8 r0 + +__ashlsi3_31: + shll2 r0 +__ashlsi3_29: + shll2 r0 +__ashlsi3_27: + shll2 r0 +__ashlsi3_25: + shll16 r0 + shll8 r0 + rts + shll r0 + +__ashlsi3_0: + rts + nop |