m68k: add private libgcc
Add private libgcc Signed-off-by: Angelo Dureghello <angelo@sysam.it>utp
angelo@sysam.it
Tom Rini
parent
8405b8d98a
commit
6463fd8f95
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@ -40,6 +40,7 @@ config BLACKFIN
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config M68K
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bool "M68000 architecture"
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select HAVE_PRIVATE_LIBGCC
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select HAVE_GENERIC_BOARD
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select SYS_GENERIC_BOARD
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@ -5,6 +5,10 @@
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# SPDX-License-Identifier: GPL-2.0+
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#
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## Build a couple of necessary functions into a private libgcc
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## if the user asked for it
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lib-$(CONFIG_USE_PRIVATE_LIBGCC) += lshrdi3.o muldi3.o ashldi3.o
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obj-$(CONFIG_CMD_BOOTM) += bootm.o
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obj-y += cache.o
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obj-y += interrupts.o
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@ -0,0 +1,50 @@
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/*
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* ashldi3.c extracted from gcc-2.7.2.3/libgcc2.c and
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* gcc-2.7.2.3/longlong.h
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*
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* Copyright (C) 1989-2015 Free Software Foundation, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#define BITS_PER_UNIT 8
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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typedef int DItype __attribute__ ((mode (DI)));
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typedef int word_type __attribute__ ((mode (__word__)));
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struct DIstruct {SItype high, low;};
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typedef union
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{
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struct DIstruct s;
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DItype ll;
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} DIunion;
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DItype __ashldi3 (DItype u, word_type b)
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{
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DIunion w;
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word_type bm;
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DIunion uu;
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if (b == 0)
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return u;
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uu.ll = u;
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bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
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if (bm <= 0)
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{
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w.s.low = 0;
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w.s.high = (USItype)uu.s.low << -bm;
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}
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else
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{
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USItype carries = (USItype)uu.s.low >> bm;
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w.s.low = (USItype)uu.s.low << b;
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w.s.high = ((USItype)uu.s.high << b) | carries;
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}
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return w.ll;
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}
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@ -0,0 +1,50 @@
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/*
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* lshrdi3.c extracted from gcc-2.7.2.3/libgcc2.c and
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* gcc-2.7.2.3/longlong.h
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*
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* Copyright (C) 1989-2015 Free Software Foundation, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#define BITS_PER_UNIT 8
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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typedef int DItype __attribute__ ((mode (DI)));
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typedef int word_type __attribute__ ((mode (__word__)));
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struct DIstruct {SItype high, low;};
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typedef union
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{
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struct DIstruct s;
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DItype ll;
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} DIunion;
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DItype __lshrdi3 (DItype u, word_type b)
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{
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DIunion w;
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word_type bm;
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DIunion uu;
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if (b == 0)
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return u;
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uu.ll = u;
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bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
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if (bm <= 0)
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{
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w.s.high = 0;
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w.s.low = (USItype)uu.s.high >> -bm;
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}
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else
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{
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USItype carries = (USItype)uu.s.high << bm;
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w.s.high = (USItype)uu.s.high >> b;
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w.s.low = ((USItype)uu.s.low >> b) | carries;
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}
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return w.ll;
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}
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@ -0,0 +1,71 @@
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/*
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* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and
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* gcc-2.7.2.3/longlong.h
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*
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* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#define SI_TYPE_SIZE 32
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#define __BITS4 (SI_TYPE_SIZE / 4)
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#define __ll_B (1L << (SI_TYPE_SIZE / 2))
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#define __ll_lowpart(t) ((USItype) (t) % __ll_B)
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#define __ll_highpart(t) ((USItype) (t) / __ll_B)
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#define umul_ppmm(w1, w0, u, v) \
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do { \
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USItype __x0, __x1, __x2, __x3; \
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USItype __ul, __vl, __uh, __vh; \
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\
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__ul = __ll_lowpart (u); \
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__uh = __ll_highpart (u); \
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__vl = __ll_lowpart (v); \
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__vh = __ll_highpart (v); \
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\
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__x0 = (USItype) __ul * __vl; \
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__x1 = (USItype) __ul * __vh; \
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__x2 = (USItype) __uh * __vl; \
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__x3 = (USItype) __uh * __vh; \
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\
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__x1 += __ll_highpart (__x0);/* this can't give carry */ \
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__x1 += __x2; /* but this indeed can */ \
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if (__x1 < __x2) /* did we get it? */ \
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__x3 += __ll_B; /* yes, add it in the proper pos. */ \
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\
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(w1) = __x3 + __ll_highpart (__x1); \
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(w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \
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} while (0)
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#define __umulsidi3(u, v) \
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({DIunion __w; \
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umul_ppmm (__w.s.high, __w.s.low, u, v); \
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__w.ll; })
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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typedef int DItype __attribute__ ((mode (DI)));
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typedef int word_type __attribute__ ((mode (__word__)));
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struct DIstruct {SItype high, low;};
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typedef union
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{
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struct DIstruct s;
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DItype ll;
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} DIunion;
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DItype __muldi3 (DItype u, DItype v)
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{
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DIunion w;
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DIunion uu, vv;
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uu.ll = u,
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vv.ll = v;
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w.ll = __umulsidi3 (uu.s.low, vv.s.low);
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w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high
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+ (USItype) uu.s.high * (USItype) vv.s.low);
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return w.ll;
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}
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