diff options
author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-07-01 13:26:51 +0200 |
---|---|---|
committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-06-15 16:37:11 +0200 |
commit | 11a7752e015cabb5dbd4a9096f4ab2ca18836ae3 (patch) | |
tree | 941cc2958c411ff2ae26fe97909848dcf24796a1 | |
parent | s390: calculate loops_per_jiffies with fp instructions (diff) | |
download | linux-11a7752e015cabb5dbd4a9096f4ab2ca18836ae3.tar.xz linux-11a7752e015cabb5dbd4a9096f4ab2ca18836ae3.zip |
s390: remove math emulation code
The last in-kernel user is gone so we can finally remove this code.
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
-rw-r--r-- | arch/s390/include/asm/mathemu.h | 28 | ||||
-rw-r--r-- | arch/s390/include/asm/sfp-machine.h | 142 | ||||
-rw-r--r-- | arch/s390/include/asm/sfp-util.h | 67 | ||||
-rw-r--r-- | arch/s390/kernel/dis.c | 1 |
4 files changed, 0 insertions, 238 deletions
diff --git a/arch/s390/include/asm/mathemu.h b/arch/s390/include/asm/mathemu.h deleted file mode 100644 index 614dfaf47f71..000000000000 --- a/arch/s390/include/asm/mathemu.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * 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__ */ - - - - diff --git a/arch/s390/include/asm/sfp-machine.h b/arch/s390/include/asm/sfp-machine.h deleted file mode 100644 index 4e16aede4b06..000000000000 --- a/arch/s390/include/asm/sfp-machine.h +++ /dev/null @@ -1,142 +0,0 @@ -/* 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 diff --git a/arch/s390/include/asm/sfp-util.h b/arch/s390/include/asm/sfp-util.h deleted file mode 100644 index c8b7cf9d6279..000000000000 --- a/arch/s390/include/asm/sfp-util.h +++ /dev/null @@ -1,67 +0,0 @@ -#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 diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c index 8cb9bfdd3ea8..43446fa2a4e5 100644 --- a/arch/s390/kernel/dis.c +++ b/arch/s390/kernel/dis.c @@ -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> |