b2212ea41d
While the trap number and error code are passed around for debugging purposes, this occurs wholly independently of the thread struct values. These values were never part of the sigcontext ABI and are thus never passed anywhere, so we can just kill them off across the board. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
|
|
* arch/sh/kernel/cpu/sh5/fpu.c
|
|
*
|
|
* Copyright (C) 2001 Manuela Cirronis, Paolo Alberelli
|
|
* Copyright (C) 2002 STMicroelectronics Limited
|
|
* Author : Stuart Menefy
|
|
*
|
|
* Started from SH4 version:
|
|
* Copyright (C) 1999, 2000 Kaz Kojima & Niibe Yutaka
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
#include <linux/sched.h>
|
|
#include <linux/signal.h>
|
|
#include <asm/processor.h>
|
|
|
|
void save_fpu(struct task_struct *tsk)
|
|
{
|
|
asm volatile("fst.p %0, (0*8), fp0\n\t"
|
|
"fst.p %0, (1*8), fp2\n\t"
|
|
"fst.p %0, (2*8), fp4\n\t"
|
|
"fst.p %0, (3*8), fp6\n\t"
|
|
"fst.p %0, (4*8), fp8\n\t"
|
|
"fst.p %0, (5*8), fp10\n\t"
|
|
"fst.p %0, (6*8), fp12\n\t"
|
|
"fst.p %0, (7*8), fp14\n\t"
|
|
"fst.p %0, (8*8), fp16\n\t"
|
|
"fst.p %0, (9*8), fp18\n\t"
|
|
"fst.p %0, (10*8), fp20\n\t"
|
|
"fst.p %0, (11*8), fp22\n\t"
|
|
"fst.p %0, (12*8), fp24\n\t"
|
|
"fst.p %0, (13*8), fp26\n\t"
|
|
"fst.p %0, (14*8), fp28\n\t"
|
|
"fst.p %0, (15*8), fp30\n\t"
|
|
"fst.p %0, (16*8), fp32\n\t"
|
|
"fst.p %0, (17*8), fp34\n\t"
|
|
"fst.p %0, (18*8), fp36\n\t"
|
|
"fst.p %0, (19*8), fp38\n\t"
|
|
"fst.p %0, (20*8), fp40\n\t"
|
|
"fst.p %0, (21*8), fp42\n\t"
|
|
"fst.p %0, (22*8), fp44\n\t"
|
|
"fst.p %0, (23*8), fp46\n\t"
|
|
"fst.p %0, (24*8), fp48\n\t"
|
|
"fst.p %0, (25*8), fp50\n\t"
|
|
"fst.p %0, (26*8), fp52\n\t"
|
|
"fst.p %0, (27*8), fp54\n\t"
|
|
"fst.p %0, (28*8), fp56\n\t"
|
|
"fst.p %0, (29*8), fp58\n\t"
|
|
"fst.p %0, (30*8), fp60\n\t"
|
|
"fst.p %0, (31*8), fp62\n\t"
|
|
|
|
"fgetscr fr63\n\t"
|
|
"fst.s %0, (32*8), fr63\n\t"
|
|
: /* no output */
|
|
: "r" (&tsk->thread.xstate->hardfpu)
|
|
: "memory");
|
|
}
|
|
|
|
void restore_fpu(struct task_struct *tsk)
|
|
{
|
|
asm volatile("fld.p %0, (0*8), fp0\n\t"
|
|
"fld.p %0, (1*8), fp2\n\t"
|
|
"fld.p %0, (2*8), fp4\n\t"
|
|
"fld.p %0, (3*8), fp6\n\t"
|
|
"fld.p %0, (4*8), fp8\n\t"
|
|
"fld.p %0, (5*8), fp10\n\t"
|
|
"fld.p %0, (6*8), fp12\n\t"
|
|
"fld.p %0, (7*8), fp14\n\t"
|
|
"fld.p %0, (8*8), fp16\n\t"
|
|
"fld.p %0, (9*8), fp18\n\t"
|
|
"fld.p %0, (10*8), fp20\n\t"
|
|
"fld.p %0, (11*8), fp22\n\t"
|
|
"fld.p %0, (12*8), fp24\n\t"
|
|
"fld.p %0, (13*8), fp26\n\t"
|
|
"fld.p %0, (14*8), fp28\n\t"
|
|
"fld.p %0, (15*8), fp30\n\t"
|
|
"fld.p %0, (16*8), fp32\n\t"
|
|
"fld.p %0, (17*8), fp34\n\t"
|
|
"fld.p %0, (18*8), fp36\n\t"
|
|
"fld.p %0, (19*8), fp38\n\t"
|
|
"fld.p %0, (20*8), fp40\n\t"
|
|
"fld.p %0, (21*8), fp42\n\t"
|
|
"fld.p %0, (22*8), fp44\n\t"
|
|
"fld.p %0, (23*8), fp46\n\t"
|
|
"fld.p %0, (24*8), fp48\n\t"
|
|
"fld.p %0, (25*8), fp50\n\t"
|
|
"fld.p %0, (26*8), fp52\n\t"
|
|
"fld.p %0, (27*8), fp54\n\t"
|
|
"fld.p %0, (28*8), fp56\n\t"
|
|
"fld.p %0, (29*8), fp58\n\t"
|
|
"fld.p %0, (30*8), fp60\n\t"
|
|
|
|
"fld.s %0, (32*8), fr63\n\t"
|
|
"fputscr fr63\n\t"
|
|
|
|
"fld.p %0, (31*8), fp62\n\t"
|
|
: /* no output */
|
|
: "r" (&tsk->thread.xstate->hardfpu)
|
|
: "memory");
|
|
}
|
|
|
|
asmlinkage void do_fpu_error(unsigned long ex, struct pt_regs *regs)
|
|
{
|
|
struct task_struct *tsk = current;
|
|
|
|
regs->pc += 4;
|
|
|
|
force_sig(SIGFPE, tsk);
|
|
}
|