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84 lines
2.4 KiB
84 lines
2.4 KiB
/* 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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