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1// SPDX-License-Identifier: GPL-2.0
2// Copyright (C) 2005-2017 Andes Technology Corporation
3
4#ifndef _ASMNDS32_SIGCONTEXT_H
5#define _ASMNDS32_SIGCONTEXT_H
6
7/*
8 * Signal context structure - contains all info to do with the state
9 * before the signal handler was invoked. Note: only add new entries
10 * to the end of the structure.
11 */
12struct fpu_struct {
13 unsigned long long fd_regs[32];
14 unsigned long fpcsr;
15 /*
16 * UDF_trap is used to recognize whether underflow trap is enabled
17 * or not. When UDF_trap == 1, this process will be traped and then
18 * get a SIGFPE signal when encountering an underflow exception.
19 * UDF_trap is only modified through setfputrap syscall. Therefore,
20 * UDF_trap needn't be saved or loaded to context in each context
21 * switch.
22 */
23 unsigned long UDF_trap;
24};
25
26struct zol_struct {
27 unsigned long nds32_lc; /* $LC */
28 unsigned long nds32_le; /* $LE */
29 unsigned long nds32_lb; /* $LB */
30};
31
32struct sigcontext {
33 unsigned long trap_no;
34 unsigned long error_code;
35 unsigned long oldmask;
36 unsigned long nds32_r0;
37 unsigned long nds32_r1;
38 unsigned long nds32_r2;
39 unsigned long nds32_r3;
40 unsigned long nds32_r4;
41 unsigned long nds32_r5;
42 unsigned long nds32_r6;
43 unsigned long nds32_r7;
44 unsigned long nds32_r8;
45 unsigned long nds32_r9;
46 unsigned long nds32_r10;
47 unsigned long nds32_r11;
48 unsigned long nds32_r12;
49 unsigned long nds32_r13;
50 unsigned long nds32_r14;
51 unsigned long nds32_r15;
52 unsigned long nds32_r16;
53 unsigned long nds32_r17;
54 unsigned long nds32_r18;
55 unsigned long nds32_r19;
56 unsigned long nds32_r20;
57 unsigned long nds32_r21;
58 unsigned long nds32_r22;
59 unsigned long nds32_r23;
60 unsigned long nds32_r24;
61 unsigned long nds32_r25;
62 unsigned long nds32_fp; /* $r28 */
63 unsigned long nds32_gp; /* $r29 */
64 unsigned long nds32_lp; /* $r30 */
65 unsigned long nds32_sp; /* $r31 */
66 unsigned long nds32_ipc;
67 unsigned long fault_address;
68 unsigned long used_math_flag;
69 /* FPU Registers */
70 struct fpu_struct fpu;
71 struct zol_struct zol;
72};
73
74#endif