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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
// Copyright (C) 2005-2017 Andes Technology Corporation
#ifndef _ASMNDS32_SIGCONTEXT_H
#define _ASMNDS32_SIGCONTEXT_H
/*
* Signal context structure - contains all info to do with the state
* before the signal handler was invoked. Note: only add new entries
* to the end of the structure.
*/
struct fpu_struct {
unsigned long long fd_regs[32];
unsigned long fpcsr;
/*
* When CONFIG_SUPPORT_DENORMAL_ARITHMETIC is defined, kernel prevents
* hardware from treating the denormalized output as an underflow case
* and rounding it to a normal number. Hence kernel enables the UDF and
* IEX trap in the fpcsr register to step in the calculation.
* However, the UDF and IEX trap enable bit in $fpcsr also lose
* their use.
*
* UDF_IEX_trap replaces the feature of UDF and IEX trap enable bit in
* $fpcsr to control the trap of underflow and inexact. The bit filed
* of UDF_IEX_trap is the same as $fpcsr, 10th bit is used to enable UDF
* exception trapping and 11th bit is used to enable IEX exception
* trapping.
*
* UDF_IEX_trap is only modified through fp_udfiex_crtl syscall.
* Therefore, UDF_IEX_trap needn't be saved and restored in each
* context switch.
*/
unsigned long UDF_IEX_trap;
};
struct zol_struct {
unsigned long nds32_lc; /* $LC */
unsigned long nds32_le; /* $LE */
unsigned long nds32_lb; /* $LB */
};
struct sigcontext {
unsigned long trap_no;
unsigned long error_code;
unsigned long oldmask;
unsigned long nds32_r0;
unsigned long nds32_r1;
unsigned long nds32_r2;
unsigned long nds32_r3;
unsigned long nds32_r4;
unsigned long nds32_r5;
unsigned long nds32_r6;
unsigned long nds32_r7;
unsigned long nds32_r8;
unsigned long nds32_r9;
unsigned long nds32_r10;
unsigned long nds32_r11;
unsigned long nds32_r12;
unsigned long nds32_r13;
unsigned long nds32_r14;
unsigned long nds32_r15;
unsigned long nds32_r16;
unsigned long nds32_r17;
unsigned long nds32_r18;
unsigned long nds32_r19;
unsigned long nds32_r20;
unsigned long nds32_r21;
unsigned long nds32_r22;
unsigned long nds32_r23;
unsigned long nds32_r24;
unsigned long nds32_r25;
unsigned long nds32_fp; /* $r28 */
unsigned long nds32_gp; /* $r29 */
unsigned long nds32_lp; /* $r30 */
unsigned long nds32_sp; /* $r31 */
unsigned long nds32_ipc;
unsigned long fault_address;
unsigned long used_math_flag;
/* FPU Registers */
struct fpu_struct fpu;
struct zol_struct zol;
};
#endif