![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
462 lines
11 KiB
C
462 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 1999 Eddie C. Dost (ecd@atecom.com)
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/sched.h>
|
|
|
|
#include <linux/uaccess.h>
|
|
#include <asm/reg.h>
|
|
#include <asm/switch_to.h>
|
|
|
|
#include <asm/sfp-machine.h>
|
|
#include <math-emu/double.h>
|
|
|
|
#define FLOATFUNC(x) extern int x(void *, void *, void *, void *)
|
|
|
|
/* The instructions list which may be not implemented by a hardware FPU */
|
|
FLOATFUNC(fre);
|
|
FLOATFUNC(frsqrtes);
|
|
FLOATFUNC(fsqrt);
|
|
FLOATFUNC(fsqrts);
|
|
FLOATFUNC(mtfsf);
|
|
FLOATFUNC(mtfsfi);
|
|
|
|
#ifdef CONFIG_MATH_EMULATION_HW_UNIMPLEMENTED
|
|
#undef FLOATFUNC(x)
|
|
#define FLOATFUNC(x) static inline int x(void *op1, void *op2, void *op3, \
|
|
void *op4) { }
|
|
#endif
|
|
|
|
FLOATFUNC(fadd);
|
|
FLOATFUNC(fadds);
|
|
FLOATFUNC(fdiv);
|
|
FLOATFUNC(fdivs);
|
|
FLOATFUNC(fmul);
|
|
FLOATFUNC(fmuls);
|
|
FLOATFUNC(fsub);
|
|
FLOATFUNC(fsubs);
|
|
|
|
FLOATFUNC(fmadd);
|
|
FLOATFUNC(fmadds);
|
|
FLOATFUNC(fmsub);
|
|
FLOATFUNC(fmsubs);
|
|
FLOATFUNC(fnmadd);
|
|
FLOATFUNC(fnmadds);
|
|
FLOATFUNC(fnmsub);
|
|
FLOATFUNC(fnmsubs);
|
|
|
|
FLOATFUNC(fctiw);
|
|
FLOATFUNC(fctiwz);
|
|
FLOATFUNC(frsp);
|
|
|
|
FLOATFUNC(fcmpo);
|
|
FLOATFUNC(fcmpu);
|
|
|
|
FLOATFUNC(mcrfs);
|
|
FLOATFUNC(mffs);
|
|
FLOATFUNC(mtfsb0);
|
|
FLOATFUNC(mtfsb1);
|
|
|
|
FLOATFUNC(lfd);
|
|
FLOATFUNC(lfs);
|
|
|
|
FLOATFUNC(stfd);
|
|
FLOATFUNC(stfs);
|
|
FLOATFUNC(stfiwx);
|
|
|
|
FLOATFUNC(fabs);
|
|
FLOATFUNC(fmr);
|
|
FLOATFUNC(fnabs);
|
|
FLOATFUNC(fneg);
|
|
|
|
/* Optional */
|
|
FLOATFUNC(fres);
|
|
FLOATFUNC(frsqrte);
|
|
FLOATFUNC(fsel);
|
|
|
|
|
|
#define OP31 0x1f /* 31 */
|
|
#define LFS 0x30 /* 48 */
|
|
#define LFSU 0x31 /* 49 */
|
|
#define LFD 0x32 /* 50 */
|
|
#define LFDU 0x33 /* 51 */
|
|
#define STFS 0x34 /* 52 */
|
|
#define STFSU 0x35 /* 53 */
|
|
#define STFD 0x36 /* 54 */
|
|
#define STFDU 0x37 /* 55 */
|
|
#define OP59 0x3b /* 59 */
|
|
#define OP63 0x3f /* 63 */
|
|
|
|
/* Opcode 31: */
|
|
/* X-Form: */
|
|
#define LFSX 0x217 /* 535 */
|
|
#define LFSUX 0x237 /* 567 */
|
|
#define LFDX 0x257 /* 599 */
|
|
#define LFDUX 0x277 /* 631 */
|
|
#define STFSX 0x297 /* 663 */
|
|
#define STFSUX 0x2b7 /* 695 */
|
|
#define STFDX 0x2d7 /* 727 */
|
|
#define STFDUX 0x2f7 /* 759 */
|
|
#define STFIWX 0x3d7 /* 983 */
|
|
|
|
/* Opcode 59: */
|
|
/* A-Form: */
|
|
#define FDIVS 0x012 /* 18 */
|
|
#define FSUBS 0x014 /* 20 */
|
|
#define FADDS 0x015 /* 21 */
|
|
#define FSQRTS 0x016 /* 22 */
|
|
#define FRES 0x018 /* 24 */
|
|
#define FMULS 0x019 /* 25 */
|
|
#define FRSQRTES 0x01a /* 26 */
|
|
#define FMSUBS 0x01c /* 28 */
|
|
#define FMADDS 0x01d /* 29 */
|
|
#define FNMSUBS 0x01e /* 30 */
|
|
#define FNMADDS 0x01f /* 31 */
|
|
|
|
/* Opcode 63: */
|
|
/* A-Form: */
|
|
#define FDIV 0x012 /* 18 */
|
|
#define FSUB 0x014 /* 20 */
|
|
#define FADD 0x015 /* 21 */
|
|
#define FSQRT 0x016 /* 22 */
|
|
#define FSEL 0x017 /* 23 */
|
|
#define FRE 0x018 /* 24 */
|
|
#define FMUL 0x019 /* 25 */
|
|
#define FRSQRTE 0x01a /* 26 */
|
|
#define FMSUB 0x01c /* 28 */
|
|
#define FMADD 0x01d /* 29 */
|
|
#define FNMSUB 0x01e /* 30 */
|
|
#define FNMADD 0x01f /* 31 */
|
|
|
|
/* X-Form: */
|
|
#define FCMPU 0x000 /* 0 */
|
|
#define FRSP 0x00c /* 12 */
|
|
#define FCTIW 0x00e /* 14 */
|
|
#define FCTIWZ 0x00f /* 15 */
|
|
#define FCMPO 0x020 /* 32 */
|
|
#define MTFSB1 0x026 /* 38 */
|
|
#define FNEG 0x028 /* 40 */
|
|
#define MCRFS 0x040 /* 64 */
|
|
#define MTFSB0 0x046 /* 70 */
|
|
#define FMR 0x048 /* 72 */
|
|
#define MTFSFI 0x086 /* 134 */
|
|
#define FNABS 0x088 /* 136 */
|
|
#define FABS 0x108 /* 264 */
|
|
#define MFFS 0x247 /* 583 */
|
|
#define MTFSF 0x2c7 /* 711 */
|
|
|
|
|
|
#define AB 2
|
|
#define AC 3
|
|
#define ABC 4
|
|
#define D 5
|
|
#define DU 6
|
|
#define X 7
|
|
#define XA 8
|
|
#define XB 9
|
|
#define XCR 11
|
|
#define XCRB 12
|
|
#define XCRI 13
|
|
#define XCRL 16
|
|
#define XE 14
|
|
#define XEU 15
|
|
#define XFLB 10
|
|
|
|
static int
|
|
record_exception(struct pt_regs *regs, int eflag)
|
|
{
|
|
u32 fpscr;
|
|
|
|
fpscr = __FPU_FPSCR;
|
|
|
|
if (eflag) {
|
|
fpscr |= FPSCR_FX;
|
|
if (eflag & EFLAG_OVERFLOW)
|
|
fpscr |= FPSCR_OX;
|
|
if (eflag & EFLAG_UNDERFLOW)
|
|
fpscr |= FPSCR_UX;
|
|
if (eflag & EFLAG_DIVZERO)
|
|
fpscr |= FPSCR_ZX;
|
|
if (eflag & EFLAG_INEXACT)
|
|
fpscr |= FPSCR_XX;
|
|
if (eflag & EFLAG_INVALID)
|
|
fpscr |= FPSCR_VX;
|
|
if (eflag & EFLAG_VXSNAN)
|
|
fpscr |= FPSCR_VXSNAN;
|
|
if (eflag & EFLAG_VXISI)
|
|
fpscr |= FPSCR_VXISI;
|
|
if (eflag & EFLAG_VXIDI)
|
|
fpscr |= FPSCR_VXIDI;
|
|
if (eflag & EFLAG_VXZDZ)
|
|
fpscr |= FPSCR_VXZDZ;
|
|
if (eflag & EFLAG_VXIMZ)
|
|
fpscr |= FPSCR_VXIMZ;
|
|
if (eflag & EFLAG_VXVC)
|
|
fpscr |= FPSCR_VXVC;
|
|
if (eflag & EFLAG_VXSOFT)
|
|
fpscr |= FPSCR_VXSOFT;
|
|
if (eflag & EFLAG_VXSQRT)
|
|
fpscr |= FPSCR_VXSQRT;
|
|
if (eflag & EFLAG_VXCVI)
|
|
fpscr |= FPSCR_VXCVI;
|
|
}
|
|
|
|
// fpscr &= ~(FPSCR_VX);
|
|
if (fpscr & (FPSCR_VXSNAN | FPSCR_VXISI | FPSCR_VXIDI |
|
|
FPSCR_VXZDZ | FPSCR_VXIMZ | FPSCR_VXVC |
|
|
FPSCR_VXSOFT | FPSCR_VXSQRT | FPSCR_VXCVI))
|
|
fpscr |= FPSCR_VX;
|
|
|
|
fpscr &= ~(FPSCR_FEX);
|
|
if (((fpscr & FPSCR_VX) && (fpscr & FPSCR_VE)) ||
|
|
((fpscr & FPSCR_OX) && (fpscr & FPSCR_OE)) ||
|
|
((fpscr & FPSCR_UX) && (fpscr & FPSCR_UE)) ||
|
|
((fpscr & FPSCR_ZX) && (fpscr & FPSCR_ZE)) ||
|
|
((fpscr & FPSCR_XX) && (fpscr & FPSCR_XE)))
|
|
fpscr |= FPSCR_FEX;
|
|
|
|
__FPU_FPSCR = fpscr;
|
|
|
|
return (fpscr & FPSCR_FEX) ? 1 : 0;
|
|
}
|
|
|
|
int
|
|
do_mathemu(struct pt_regs *regs)
|
|
{
|
|
void *op0 = 0, *op1 = 0, *op2 = 0, *op3 = 0;
|
|
unsigned long pc = regs->nip;
|
|
signed short sdisp;
|
|
u32 insn = 0;
|
|
int idx = 0;
|
|
int (*func)(void *, void *, void *, void *);
|
|
int type = 0;
|
|
int eflag, trap;
|
|
|
|
if (get_user(insn, (u32 *)pc))
|
|
return -EFAULT;
|
|
|
|
switch (insn >> 26) {
|
|
case LFS: func = lfs; type = D; break;
|
|
case LFSU: func = lfs; type = DU; break;
|
|
case LFD: func = lfd; type = D; break;
|
|
case LFDU: func = lfd; type = DU; break;
|
|
case STFS: func = stfs; type = D; break;
|
|
case STFSU: func = stfs; type = DU; break;
|
|
case STFD: func = stfd; type = D; break;
|
|
case STFDU: func = stfd; type = DU; break;
|
|
|
|
case OP31:
|
|
switch ((insn >> 1) & 0x3ff) {
|
|
case LFSX: func = lfs; type = XE; break;
|
|
case LFSUX: func = lfs; type = XEU; break;
|
|
case LFDX: func = lfd; type = XE; break;
|
|
case LFDUX: func = lfd; type = XEU; break;
|
|
case STFSX: func = stfs; type = XE; break;
|
|
case STFSUX: func = stfs; type = XEU; break;
|
|
case STFDX: func = stfd; type = XE; break;
|
|
case STFDUX: func = stfd; type = XEU; break;
|
|
case STFIWX: func = stfiwx; type = XE; break;
|
|
default:
|
|
goto illegal;
|
|
}
|
|
break;
|
|
|
|
case OP59:
|
|
switch ((insn >> 1) & 0x1f) {
|
|
case FDIVS: func = fdivs; type = AB; break;
|
|
case FSUBS: func = fsubs; type = AB; break;
|
|
case FADDS: func = fadds; type = AB; break;
|
|
case FSQRTS: func = fsqrts; type = XB; break;
|
|
case FRES: func = fres; type = XB; break;
|
|
case FMULS: func = fmuls; type = AC; break;
|
|
case FRSQRTES: func = frsqrtes;type = XB; break;
|
|
case FMSUBS: func = fmsubs; type = ABC; break;
|
|
case FMADDS: func = fmadds; type = ABC; break;
|
|
case FNMSUBS: func = fnmsubs; type = ABC; break;
|
|
case FNMADDS: func = fnmadds; type = ABC; break;
|
|
default:
|
|
goto illegal;
|
|
}
|
|
break;
|
|
|
|
case OP63:
|
|
if (insn & 0x20) {
|
|
switch ((insn >> 1) & 0x1f) {
|
|
case FDIV: func = fdiv; type = AB; break;
|
|
case FSUB: func = fsub; type = AB; break;
|
|
case FADD: func = fadd; type = AB; break;
|
|
case FSQRT: func = fsqrt; type = XB; break;
|
|
case FRE: func = fre; type = XB; break;
|
|
case FSEL: func = fsel; type = ABC; break;
|
|
case FMUL: func = fmul; type = AC; break;
|
|
case FRSQRTE: func = frsqrte; type = XB; break;
|
|
case FMSUB: func = fmsub; type = ABC; break;
|
|
case FMADD: func = fmadd; type = ABC; break;
|
|
case FNMSUB: func = fnmsub; type = ABC; break;
|
|
case FNMADD: func = fnmadd; type = ABC; break;
|
|
default:
|
|
goto illegal;
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch ((insn >> 1) & 0x3ff) {
|
|
case FCMPU: func = fcmpu; type = XCR; break;
|
|
case FRSP: func = frsp; type = XB; break;
|
|
case FCTIW: func = fctiw; type = XB; break;
|
|
case FCTIWZ: func = fctiwz; type = XB; break;
|
|
case FCMPO: func = fcmpo; type = XCR; break;
|
|
case MTFSB1: func = mtfsb1; type = XCRB; break;
|
|
case FNEG: func = fneg; type = XB; break;
|
|
case MCRFS: func = mcrfs; type = XCRL; break;
|
|
case MTFSB0: func = mtfsb0; type = XCRB; break;
|
|
case FMR: func = fmr; type = XB; break;
|
|
case MTFSFI: func = mtfsfi; type = XCRI; break;
|
|
case FNABS: func = fnabs; type = XB; break;
|
|
case FABS: func = fabs; type = XB; break;
|
|
case MFFS: func = mffs; type = X; break;
|
|
case MTFSF: func = mtfsf; type = XFLB; break;
|
|
default:
|
|
goto illegal;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
goto illegal;
|
|
}
|
|
|
|
switch (type) {
|
|
case AB:
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
|
|
op2 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
|
|
break;
|
|
|
|
case AC:
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
|
|
op2 = (void *)¤t->thread.TS_FPR((insn >> 6) & 0x1f);
|
|
break;
|
|
|
|
case ABC:
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
|
|
op2 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
|
|
op3 = (void *)¤t->thread.TS_FPR((insn >> 6) & 0x1f);
|
|
break;
|
|
|
|
case D:
|
|
idx = (insn >> 16) & 0x1f;
|
|
sdisp = (insn & 0xffff);
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
|
|
break;
|
|
|
|
case DU:
|
|
idx = (insn >> 16) & 0x1f;
|
|
if (!idx)
|
|
goto illegal;
|
|
|
|
sdisp = (insn & 0xffff);
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)(regs->gpr[idx] + sdisp);
|
|
break;
|
|
|
|
case X:
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
break;
|
|
|
|
case XA:
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
|
|
break;
|
|
|
|
case XB:
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
|
|
break;
|
|
|
|
case XE:
|
|
idx = (insn >> 16) & 0x1f;
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)((idx ? regs->gpr[idx] : 0)
|
|
+ regs->gpr[(insn >> 11) & 0x1f]);
|
|
break;
|
|
|
|
case XEU:
|
|
idx = (insn >> 16) & 0x1f;
|
|
if (!idx)
|
|
goto illegal;
|
|
op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
|
|
op1 = (void *)(regs->gpr[idx]
|
|
+ regs->gpr[(insn >> 11) & 0x1f]);
|
|
break;
|
|
|
|
case XCR:
|
|
op0 = (void *)®s->ccr;
|
|
op1 = (void *)((insn >> 23) & 0x7);
|
|
op2 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
|
|
op3 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
|
|
break;
|
|
|
|
case XCRL:
|
|
op0 = (void *)®s->ccr;
|
|
op1 = (void *)((insn >> 23) & 0x7);
|
|
op2 = (void *)((insn >> 18) & 0x7);
|
|
break;
|
|
|
|
case XCRB:
|
|
op0 = (void *)((insn >> 21) & 0x1f);
|
|
break;
|
|
|
|
case XCRI:
|
|
op0 = (void *)((insn >> 23) & 0x7);
|
|
op1 = (void *)((insn >> 12) & 0xf);
|
|
break;
|
|
|
|
case XFLB:
|
|
op0 = (void *)((insn >> 17) & 0xff);
|
|
op1 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
|
|
break;
|
|
|
|
default:
|
|
goto illegal;
|
|
}
|
|
|
|
/*
|
|
* If we support a HW FPU, we need to ensure the FP state
|
|
* is flushed into the thread_struct before attempting
|
|
* emulation
|
|
*/
|
|
flush_fp_to_thread(current);
|
|
|
|
eflag = func(op0, op1, op2, op3);
|
|
|
|
if (insn & 1) {
|
|
regs->ccr &= ~(0x0f000000);
|
|
regs->ccr |= (__FPU_FPSCR >> 4) & 0x0f000000;
|
|
}
|
|
|
|
trap = record_exception(regs, eflag);
|
|
if (trap)
|
|
return 1;
|
|
|
|
switch (type) {
|
|
case DU:
|
|
case XEU:
|
|
regs->gpr[idx] = (unsigned long)op1;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
regs->nip += 4;
|
|
return 0;
|
|
|
|
illegal:
|
|
return -ENOSYS;
|
|
}
|