| /* 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 |
