diff options
author | Waldemar Brodkorb <wbx@openadk.org> | 2017-05-24 20:49:02 +0200 |
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committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-06-23 23:46:04 +0200 |
commit | 041cdc2769407c4d3869b218ad7ee7638e1c306e (patch) | |
tree | 1ea25250d74dcb230cf5feee99226fc080dbd678 /libc/sysdeps/linux/sparc64/soft-fp/qp_cmp.c | |
parent | 58a5ba12bffad5916d9897c2870fc483f1db8282 (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/qp_cmp.c')
-rw-r--r-- | libc/sysdeps/linux/sparc64/soft-fp/qp_cmp.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc64/soft-fp/qp_cmp.c b/libc/sysdeps/linux/sparc64/soft-fp/qp_cmp.c new file mode 100644 index 000000000..5316157ec --- /dev/null +++ b/libc/sysdeps/linux/sparc64/soft-fp/qp_cmp.c @@ -0,0 +1,48 @@ +/* Software floating-point emulation. + Compare (*a) and (*b), return float condition code. + Copyright (C) 1997-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson (rth@cygnus.com) and + Jakub Jelinek (jj@ultra.linux.cz). + + 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. + + 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/>. */ + +#include "soft-fp.h" +#include "quad.h" + +int _Qp_cmp(const long double *a, const long double *b) +{ + FP_DECL_EX; + FP_DECL_Q(A); FP_DECL_Q(B); + int r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_RAW_QP(A, a); + FP_UNPACK_RAW_QP(B, b); + FP_CMP_Q(r, B, A, 3, 1); + if (r == -1) r = 2; + QP_HANDLE_EXCEPTIONS( + __asm ( +" ldd [%0], %%f52\n" +" ldd [%0+8], %%f54\n" +" ldd [%1], %%f56\n" +" ldd [%1+8], %%f58\n" +" fcmpq %%fcc3, %%f52, %%f56\n" +" " : : "r" (a), "r" (b) : QP_CLOBBER_CC); + _FPU_GETCW(_fcw); + r = ((_fcw >> 36) & 3)); + + return r; +} |