1 /* Common target dependent for AArch64 systems. 2 3 Copyright (C) 2018-2023 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #ifndef NAT_AARCH64_SVE_LINUX_PTRACE_H 21 #define NAT_AARCH64_SVE_LINUX_PTRACE_H 22 23 #include <signal.h> 24 #include <sys/utsname.h> 25 26 /* The order in which <sys/ptrace.h> and <asm/ptrace.h> are included 27 can be important. <sys/ptrace.h> often declares various PTRACE_* 28 enums. <asm/ptrace.h> often defines preprocessor constants for 29 these very same symbols. When that's the case, build errors will 30 result when <asm/ptrace.h> is included before <sys/ptrace.h>. */ 31 #include <sys/ptrace.h> 32 #include <asm/ptrace.h> 33 34 #ifndef SVE_SIG_ZREGS_SIZE 35 #include "aarch64-sve-linux-sigcontext.h" 36 #endif 37 38 /* Indicates whether a SVE ptrace header is followed by SVE registers or a 39 fpsimd structure. */ 40 41 #define HAS_SVE_STATE(header) ((header).flags & SVE_PT_REGS_SVE) 42 43 /* Read VQ for the given tid using ptrace. If SVE is not supported then zero 44 is returned (on a system that supports SVE, then VQ cannot be zero). */ 45 46 uint64_t aarch64_sve_get_vq (int tid); 47 48 /* Set VQ in the kernel for the given tid, using either the value VQ or 49 reading from the register VG in the register buffer. */ 50 51 bool aarch64_sve_set_vq (int tid, uint64_t vq); 52 bool aarch64_sve_set_vq (int tid, struct reg_buffer_common *reg_buf); 53 54 /* Read the current SVE register set using ptrace, allocating space as 55 required. */ 56 57 extern std::unique_ptr<gdb_byte[]> aarch64_sve_get_sveregs (int tid); 58 59 /* Put the registers from linux structure buf into register buffer. Assumes the 60 vector lengths in the register buffer match the size in the kernel. */ 61 62 extern void aarch64_sve_regs_copy_to_reg_buf (struct reg_buffer_common *reg_buf, 63 const void *buf); 64 65 /* Put the registers from register buffer into linux structure buf. Assumes the 66 vector lengths in the register buffer match the size in the kernel. */ 67 68 extern void 69 aarch64_sve_regs_copy_from_reg_buf (const struct reg_buffer_common *reg_buf, 70 void *buf); 71 72 #endif /* NAT_AARCH64_SVE_LINUX_PTRACE_H */ 73