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