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authorWaldemar Brodkorb <wbx@openadk.org>2017-05-24 20:49:02 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2017-06-23 23:46:04 +0200
commit041cdc2769407c4d3869b218ad7ee7638e1c306e (patch)
tree1ea25250d74dcb230cf5feee99226fc080dbd678 /libc/sysdeps/linux/sparc64/soft-fp/op-8.h
parent58a5ba12bffad5916d9897c2870fc483f1db8282 (diff)
sparc64: add basic support
No NPTL, no LDSO support. Bootup with Busybox Ash in Qemu working. Testuite shows only two failures, but mksh continue/break support doesn't work.
Diffstat (limited to 'libc/sysdeps/linux/sparc64/soft-fp/op-8.h')
-rw-r--r--libc/sysdeps/linux/sparc64/soft-fp/op-8.h150
1 files changed, 150 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc64/soft-fp/op-8.h b/libc/sysdeps/linux/sparc64/soft-fp/op-8.h
new file mode 100644
index 000000000..1f424e102
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/soft-fp/op-8.h
@@ -0,0 +1,150 @@
+/* Software floating-point emulation.
+ Basic eight-word fraction declaration and manipulation.
+ Copyright (C) 1997-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com),
+ Jakub Jelinek (jj@ultra.linux.cz) and
+ Peter Maydell (pmaydell@chiark.greenend.org.uk).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser 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 Lesser 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.)
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef SOFT_FP_OP_8_H
+#define SOFT_FP_OP_8_H 1
+
+/* We need just a few things from here for op-4, if we ever need some
+ other macros, they can be added. */
+#define _FP_FRAC_DECL_8(X) _FP_W_TYPE X##_f[8]
+#define _FP_FRAC_HIGH_8(X) (X##_f[7])
+#define _FP_FRAC_LOW_8(X) (X##_f[0])
+#define _FP_FRAC_WORD_8(X, w) (X##_f[w])
+
+#define _FP_FRAC_SLL_8(X, N) \
+ do \
+ { \
+ _FP_I_TYPE _FP_FRAC_SLL_8_up, _FP_FRAC_SLL_8_down; \
+ _FP_I_TYPE _FP_FRAC_SLL_8_skip, _FP_FRAC_SLL_8_i; \
+ _FP_FRAC_SLL_8_skip = (N) / _FP_W_TYPE_SIZE; \
+ _FP_FRAC_SLL_8_up = (N) % _FP_W_TYPE_SIZE; \
+ _FP_FRAC_SLL_8_down = _FP_W_TYPE_SIZE - _FP_FRAC_SLL_8_up; \
+ if (!_FP_FRAC_SLL_8_up) \
+ for (_FP_FRAC_SLL_8_i = 7; \
+ _FP_FRAC_SLL_8_i >= _FP_FRAC_SLL_8_skip; \
+ --_FP_FRAC_SLL_8_i) \
+ X##_f[_FP_FRAC_SLL_8_i] \
+ = X##_f[_FP_FRAC_SLL_8_i-_FP_FRAC_SLL_8_skip]; \
+ else \
+ { \
+ for (_FP_FRAC_SLL_8_i = 7; \
+ _FP_FRAC_SLL_8_i > _FP_FRAC_SLL_8_skip; \
+ --_FP_FRAC_SLL_8_i) \
+ X##_f[_FP_FRAC_SLL_8_i] \
+ = ((X##_f[_FP_FRAC_SLL_8_i-_FP_FRAC_SLL_8_skip] \
+ << _FP_FRAC_SLL_8_up) \
+ | (X##_f[_FP_FRAC_SLL_8_i-_FP_FRAC_SLL_8_skip-1] \
+ >> _FP_FRAC_SLL_8_down)); \
+ X##_f[_FP_FRAC_SLL_8_i--] = X##_f[0] << _FP_FRAC_SLL_8_up; \
+ } \
+ for (; _FP_FRAC_SLL_8_i >= 0; --_FP_FRAC_SLL_8_i) \
+ X##_f[_FP_FRAC_SLL_8_i] = 0; \
+ } \
+ while (0)
+
+#define _FP_FRAC_SRL_8(X, N) \
+ do \
+ { \
+ _FP_I_TYPE _FP_FRAC_SRL_8_up, _FP_FRAC_SRL_8_down; \
+ _FP_I_TYPE _FP_FRAC_SRL_8_skip, _FP_FRAC_SRL_8_i; \
+ _FP_FRAC_SRL_8_skip = (N) / _FP_W_TYPE_SIZE; \
+ _FP_FRAC_SRL_8_down = (N) % _FP_W_TYPE_SIZE; \
+ _FP_FRAC_SRL_8_up = _FP_W_TYPE_SIZE - _FP_FRAC_SRL_8_down; \
+ if (!_FP_FRAC_SRL_8_down) \
+ for (_FP_FRAC_SRL_8_i = 0; \
+ _FP_FRAC_SRL_8_i <= 7-_FP_FRAC_SRL_8_skip; \
+ ++_FP_FRAC_SRL_8_i) \
+ X##_f[_FP_FRAC_SRL_8_i] \
+ = X##_f[_FP_FRAC_SRL_8_i+_FP_FRAC_SRL_8_skip]; \
+ else \
+ { \
+ for (_FP_FRAC_SRL_8_i = 0; \
+ _FP_FRAC_SRL_8_i < 7-_FP_FRAC_SRL_8_skip; \
+ ++_FP_FRAC_SRL_8_i) \
+ X##_f[_FP_FRAC_SRL_8_i] \
+ = ((X##_f[_FP_FRAC_SRL_8_i+_FP_FRAC_SRL_8_skip] \
+ >> _FP_FRAC_SRL_8_down) \
+ | (X##_f[_FP_FRAC_SRL_8_i+_FP_FRAC_SRL_8_skip+1] \
+ << _FP_FRAC_SRL_8_up)); \
+ X##_f[_FP_FRAC_SRL_8_i++] = X##_f[7] >> _FP_FRAC_SRL_8_down; \
+ } \
+ for (; _FP_FRAC_SRL_8_i < 8; ++_FP_FRAC_SRL_8_i) \
+ X##_f[_FP_FRAC_SRL_8_i] = 0; \
+ } \
+ while (0)
+
+
+/* Right shift with sticky-lsb.
+ What this actually means is that we do a standard right-shift,
+ but that if any of the bits that fall off the right hand side
+ were one then we always set the LSbit. */
+#define _FP_FRAC_SRS_8(X, N, size) \
+ do \
+ { \
+ _FP_I_TYPE _FP_FRAC_SRS_8_up, _FP_FRAC_SRS_8_down; \
+ _FP_I_TYPE _FP_FRAC_SRS_8_skip, _FP_FRAC_SRS_8_i; \
+ _FP_W_TYPE _FP_FRAC_SRS_8_s; \
+ _FP_FRAC_SRS_8_skip = (N) / _FP_W_TYPE_SIZE; \
+ _FP_FRAC_SRS_8_down = (N) % _FP_W_TYPE_SIZE; \
+ _FP_FRAC_SRS_8_up = _FP_W_TYPE_SIZE - _FP_FRAC_SRS_8_down; \
+ for (_FP_FRAC_SRS_8_s = _FP_FRAC_SRS_8_i = 0; \
+ _FP_FRAC_SRS_8_i < _FP_FRAC_SRS_8_skip; \
+ ++_FP_FRAC_SRS_8_i) \
+ _FP_FRAC_SRS_8_s |= X##_f[_FP_FRAC_SRS_8_i]; \
+ if (!_FP_FRAC_SRS_8_down) \
+ for (_FP_FRAC_SRS_8_i = 0; \
+ _FP_FRAC_SRS_8_i <= 7-_FP_FRAC_SRS_8_skip; \
+ ++_FP_FRAC_SRS_8_i) \
+ X##_f[_FP_FRAC_SRS_8_i] \
+ = X##_f[_FP_FRAC_SRS_8_i+_FP_FRAC_SRS_8_skip]; \
+ else \
+ { \
+ _FP_FRAC_SRS_8_s \
+ |= X##_f[_FP_FRAC_SRS_8_i] << _FP_FRAC_SRS_8_up; \
+ for (_FP_FRAC_SRS_8_i = 0; \
+ _FP_FRAC_SRS_8_i < 7-_FP_FRAC_SRS_8_skip; \
+ ++_FP_FRAC_SRS_8_i) \
+ X##_f[_FP_FRAC_SRS_8_i] \
+ = ((X##_f[_FP_FRAC_SRS_8_i+_FP_FRAC_SRS_8_skip] \
+ >> _FP_FRAC_SRS_8_down) \
+ | (X##_f[_FP_FRAC_SRS_8_i+_FP_FRAC_SRS_8_skip+1] \
+ << _FP_FRAC_SRS_8_up)); \
+ X##_f[_FP_FRAC_SRS_8_i++] = X##_f[7] >> _FP_FRAC_SRS_8_down; \
+ } \
+ for (; _FP_FRAC_SRS_8_i < 8; ++_FP_FRAC_SRS_8_i) \
+ X##_f[_FP_FRAC_SRS_8_i] = 0; \
+ /* Don't fix the LSB until the very end when we're sure f[0] is \
+ stable. */ \
+ X##_f[0] |= (_FP_FRAC_SRS_8_s != 0); \
+ } \
+ while (0)
+
+#endif /* !SOFT_FP_OP_8_H */