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| author | angelo@sysam.it <angelo@sysam.it> | 2015-12-06 17:47:59 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-12-13 20:22:00 -0500 |
| commit | 6463fd8f952df9e4bb448f0aff5d16873f8dfdb2 (patch) | |
| tree | 3c2e23045aadf35ef674397c6bff716eb0761b01 /arch/m68k/lib/ashldi3.c | |
| parent | 8405b8d98a96233cc73969817367630ae7cc46b1 (diff) | |
| download | u-boot-imx-6463fd8f952df9e4bb448f0aff5d16873f8dfdb2.zip u-boot-imx-6463fd8f952df9e4bb448f0aff5d16873f8dfdb2.tar.gz u-boot-imx-6463fd8f952df9e4bb448f0aff5d16873f8dfdb2.tar.bz2 | |
m68k: add private libgcc
Add private libgcc
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Diffstat (limited to 'arch/m68k/lib/ashldi3.c')
| -rw-r--r-- | arch/m68k/lib/ashldi3.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/m68k/lib/ashldi3.c b/arch/m68k/lib/ashldi3.c new file mode 100644 index 0000000..be197da --- /dev/null +++ b/arch/m68k/lib/ashldi3.c @@ -0,0 +1,50 @@ +/* + * ashldi3.c extracted from gcc-2.7.2.3/libgcc2.c and + * gcc-2.7.2.3/longlong.h + * + * Copyright (C) 1989-2015 Free Software Foundation, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#define BITS_PER_UNIT 8 + +typedef int SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef int word_type __attribute__ ((mode (__word__))); + +struct DIstruct {SItype high, low;}; + +typedef union +{ + struct DIstruct s; + DItype ll; +} DIunion; + +DItype __ashldi3 (DItype u, word_type b) +{ + DIunion w; + word_type bm; + DIunion uu; + + if (b == 0) + return u; + + uu.ll = u; + + bm = (sizeof (SItype) * BITS_PER_UNIT) - b; + if (bm <= 0) + { + w.s.low = 0; + w.s.high = (USItype)uu.s.low << -bm; + } + else + { + USItype carries = (USItype)uu.s.low >> bm; + w.s.low = (USItype)uu.s.low << b; + w.s.high = ((USItype)uu.s.high << b) | carries; + } + + return w.ll; +}
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