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-rw-r--r--config/picochip/libgccExtras/ashrsi3.c118
1 files changed, 0 insertions, 118 deletions
diff --git a/config/picochip/libgccExtras/ashrsi3.c b/config/picochip/libgccExtras/ashrsi3.c
deleted file mode 100644
index fee3342112b..00000000000
--- a/config/picochip/libgccExtras/ashrsi3.c
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
-
-picoChip GCC support for 32-bit arithmetic shift right.
-
-Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
-Contributed by picoChip Designs Ltd.
-Maintained by Daniel Towner (daniel.towner@picochip.com)
-
-This file is free software; you can redistribute it and/or modify it
-under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option) any
-later version.
-
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
-
-This file is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
-
-typedef int HItype __attribute__ ((mode (HI)));
-typedef unsigned int UHItype __attribute__ ((mode (HI)));
-typedef unsigned int USItype __attribute__ ((mode (SI)));
-
-typedef struct USIstruct {
- UHItype low, high;
-} USIstruct;
-
-typedef union USIunion {
- USItype l;
- USIstruct s;
-} USIunion;
-
-USItype __ashrsi3(USIunion value, HItype count) {
- USIunion result;
- int temp;
- int wordOfSignBits;
-
- /* Ignore a zero count until we get into the (count < 16)
- clause. This is slightly slower when shifting by zero, but faster
- and smaller in all other cases (due to the better scheduling
- opportunities available by putting the test near computational
- instructions. */
- /* if (count == 0) return value.l; */
-
- if (count < 16) {
- /* Shift low and high words by the count. The high word must use
- an arithmetic shift. There is no arithmetic shift-right by
- variable, so synthesise it. */
- int signWord;
- int reverseCount;
-
- /* Shift low and high parts by the count. The upper word now has
- invalid signed bits. */
- result.s.low = value.s.low >> count;
- result.s.high = value.s.high >> count;
-
- if (count != 0) {
-
- reverseCount = 16 - count;
-
- /* Given a word of sign bits, shift back left to create the
- destination sign bits. */
- wordOfSignBits = __builtin_asri(value.s.high, 15);
- signWord = wordOfSignBits << reverseCount;
- result.s.high |= signWord;
-
- /* There is now a hole in the upper `count' bits of the low
- word. Shift the lower `count' bits of the upper word into the
- low word. */
- temp = value.s.high << reverseCount;
- result.s.low |= temp;
- }
-
- } else {
- int signWord;
-
- /* Shift is greater than one word, so top word will always be set
- to sign bits, and bottom word will be shifted from top word. */
- result.s.low = value.s.high >> count;
- result.s.high = __builtin_asri(value.s.high, 15);
-
- if (count != 16) {
-
- /* Shift the upper word of the source into the lower word of the
- result. Arithmetically shift the upper word as well, to retain
- the sign. This shift must be synthesised, as no such shift
- exists in the instruction set. */
- int signWord;
-
-
- /* Given a complete word of sign-bits, shift this back left to
- create the destination sign bits. */
- signWord = result.s.high << (16 - count);
- // signWord = wordOfSignBits << (16 - count);
-
- /* Insert the sign bits to the result's low word. */
- result.s.low |= signWord;
-
- }
-
- }
-
- return result.l;
-
-}