Skip to content

L
linux
Commit 11a7752e authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files
Options

s390: remove math emulation code 

The last in-kernel user is gone so we can finally remove this code.
Reviewed-by: default avatarHendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 9c203239
Hide whitespace changes
Inline Side-by-side
Showing with 0 additions and 238 deletions
arch/s390/include/asm/mathemu.h deleted 100644 → 0
View file @ 9c203239
/*
* IEEE floating point emulation.
*
* S390 version
* Copyright IBM Corp. 1999
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
#ifndef __MATHEMU__
#define __MATHEMU__
extern int math_emu_b3(__u8 *, struct pt_regs *);
extern int math_emu_ed(__u8 *, struct pt_regs *);
extern int math_emu_ldr(__u8 *);
extern int math_emu_ler(__u8 *);
extern int math_emu_std(__u8 *, struct pt_regs *);
extern int math_emu_ld(__u8 *, struct pt_regs *);
extern int math_emu_ste(__u8 *, struct pt_regs *);
extern int math_emu_le(__u8 *, struct pt_regs *);
extern int math_emu_lfpc(__u8 *, struct pt_regs *);
extern int math_emu_stfpc(__u8 *, struct pt_regs *);
extern int math_emu_srnm(__u8 *, struct pt_regs *);
#endif /* __MATHEMU__ */
arch/s390/include/asm/sfp-machine.h deleted 100644 → 0
View file @ 9c203239
/* Machine-dependent software floating-point definitions.
S/390 kernel version.
Copyright (C) 1997,1998,1999 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),
David S. Miller (davem@redhat.com) 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef _SFP_MACHINE_H
#define _SFP_MACHINE_H
#define _FP_W_TYPE_SIZE 32
#define _FP_W_TYPE unsigned int
#define _FP_WS_TYPE signed int
#define _FP_I_TYPE int
#define _FP_MUL_MEAT_S(R,X,Y) \
_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
#define _FP_MUL_MEAT_D(R,X,Y) \
_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
#define _FP_MUL_MEAT_Q(R,X,Y) \
_FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y)
#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y)
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1
#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
#define _FP_NANSIGN_S 0
#define _FP_NANSIGN_D 0
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
/*
* If one NaN is signaling and the other is not,
* we choose that one, otherwise we choose X.
*/
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
do { \
if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \
&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \
{ \
R##_s = Y##_s; \
_FP_FRAC_COPY_##wc(R,Y); \
} \
else \
{ \
R##_s = X##_s; \
_FP_FRAC_COPY_##wc(R,X); \
} \
R##_c = FP_CLS_NAN; \
} while (0)
/* Some assembly to speed things up. */
#define __FP_FRAC_ADD_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({ \
unsigned int __r2 = (x2) + (y2); \
unsigned int __r1 = (x1); \
unsigned int __r0 = (x0); \
asm volatile( \
" alr %2,%3\n" \
" brc 12,0f\n" \
" lhi 0,1\n" \
" alr %1,0\n" \
" brc 12,0f\n" \
" alr %0,0\n" \
"0:" \
: "+&d" (__r2), "+&d" (__r1), "+&d" (__r0) \
: "d" (y0), "i" (1) : "cc", "0" ); \
asm volatile( \
" alr %1,%2\n" \
" brc 12,0f\n" \
" ahi %0,1\n" \
"0:" \
: "+&d" (__r2), "+&d" (__r1) \
: "d" (y1) : "cc"); \
(r2) = __r2; \
(r1) = __r1; \
(r0) = __r0; \
})
#define __FP_FRAC_SUB_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({ \
unsigned int __r2 = (x2) - (y2); \
unsigned int __r1 = (x1); \
unsigned int __r0 = (x0); \
asm volatile( \
" slr %2,%3\n" \
" brc 3,0f\n" \
" lhi 0,1\n" \
" slr %1,0\n" \
" brc 3,0f\n" \
" slr %0,0\n" \
"0:" \
: "+&d" (__r2), "+&d" (__r1), "+&d" (__r0) \
: "d" (y0) : "cc", "0"); \
asm volatile( \
" slr %1,%2\n" \
" brc 3,0f\n" \
" ahi %0,-1\n" \
"0:" \
: "+&d" (__r2), "+&d" (__r1) \
: "d" (y1) : "cc"); \
(r2) = __r2; \
(r1) = __r1; \
(r0) = __r0; \
})
#define __FP_FRAC_DEC_3(x2,x1,x0,y2,y1,y0) __FP_FRAC_SUB_3(x2,x1,x0,x2,x1,x0,y2,y1,y0)
/* Obtain the current rounding mode. */
#define FP_ROUNDMODE mode
/* Exception flags. */
#define FP_EX_INVALID 0x800000
#define FP_EX_DIVZERO 0x400000
#define FP_EX_OVERFLOW 0x200000
#define FP_EX_UNDERFLOW 0x100000
#define FP_EX_INEXACT 0x080000
/* We write the results always */
#define FP_INHIBIT_RESULTS 0
#endif
arch/s390/include/asm/sfp-util.h deleted 100644 → 0
View file @ 9c203239
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <asm/byteorder.h>
#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({ \
unsigned int __sh = (ah); \
unsigned int __sl = (al); \
asm volatile( \
" alr %1,%3\n" \
" brc 12,0f\n" \
" ahi %0,1\n" \
"0: alr %0,%2" \
: "+&d" (__sh), "+d" (__sl) \
: "d" (bh), "d" (bl) : "cc"); \
(sh) = __sh; \
(sl) = __sl; \
})
#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({ \
unsigned int __sh = (ah); \
unsigned int __sl = (al); \
asm volatile( \
" slr %1,%3\n" \
" brc 3,0f\n" \
" ahi %0,-1\n" \
"0: slr %0,%2" \
: "+&d" (__sh), "+d" (__sl) \
: "d" (bh), "d" (bl) : "cc"); \
(sh) = __sh; \
(sl) = __sl; \
})
/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */
#define umul_ppmm(wh, wl, u, v) ({ \
unsigned int __wh = u; \
unsigned int __wl = v; \
asm volatile( \
" ltr 1,%0\n" \
" mr 0,%1\n" \
" jnm 0f\n" \
" alr 0,%1\n" \
"0: ltr %1,%1\n" \
" jnm 1f\n" \
" alr 0,%0\n" \
"1: lr %0,0\n" \
" lr %1,1\n" \
: "+d" (__wh), "+d" (__wl) \
: : "0", "1", "cc"); \
wh = __wh; \
wl = __wl; \
})
#define udiv_qrnnd(q, r, n1, n0, d) \
do { unsigned long __n; \
unsigned int __r, __d; \
__n = ((unsigned long)(n1) << 32) + n0; \
__d = (d); \
(q) = __n / __d; \
(r) = __n % __d; \
} while (0)
#define UDIV_NEEDS_NORMALIZATION 0
#define abort() BUG()
#define __BYTE_ORDER __BIG_ENDIAN
arch/s390/kernel/dis.c
View file @ 11a7752e
......@@ -26,7 +26,6 @@
#include <asm/dis.h>
#include <asm/io.h>
#include <linux/atomic.h>
#include <asm/mathemu.h>
#include <asm/cpcmd.h>
#include <asm/lowcore.h>
#include <asm/debug.h>
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7