1 /* Common target-dependent functionality for AArch64. 2 3 Copyright (C) 2017-2021 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 ARCH_AARCH64_H 21 #define ARCH_AARCH64_H 22 23 #include "gdbsupport/tdesc.h" 24 25 /* Create the aarch64 target description. A non zero VQ value indicates both 26 the presence of SVE and the Vector Quotient - the number of 128bit chunks in 27 an SVE Z register. HAS_PAUTH_P indicates the presence of the PAUTH 28 feature. 29 30 MTE_P indicates the presence of the Memory Tagging Extension feature. */ 31 32 target_desc *aarch64_create_target_description (uint64_t vq, bool has_pauth_p, 33 bool mte_p); 34 35 /* Register numbers of various important registers. 36 Note that on SVE, the Z registers reuse the V register numbers and the V 37 registers become pseudo registers. */ 38 enum aarch64_regnum 39 { 40 AARCH64_X0_REGNUM, /* First integer register. */ 41 AARCH64_FP_REGNUM = AARCH64_X0_REGNUM + 29, /* Frame register, if used. */ 42 AARCH64_LR_REGNUM = AARCH64_X0_REGNUM + 30, /* Return address. */ 43 AARCH64_SP_REGNUM, /* Stack pointer. */ 44 AARCH64_PC_REGNUM, /* Program counter. */ 45 AARCH64_CPSR_REGNUM, /* Current Program Status Register. */ 46 AARCH64_V0_REGNUM, /* First fp/vec register. */ 47 AARCH64_V31_REGNUM = AARCH64_V0_REGNUM + 31, /* Last fp/vec register. */ 48 AARCH64_SVE_Z0_REGNUM = AARCH64_V0_REGNUM, /* First SVE Z register. */ 49 AARCH64_SVE_Z31_REGNUM = AARCH64_V31_REGNUM, /* Last SVE Z register. */ 50 AARCH64_FPSR_REGNUM, /* Floating Point Status Register. */ 51 AARCH64_FPCR_REGNUM, /* Floating Point Control Register. */ 52 AARCH64_SVE_P0_REGNUM, /* First SVE predicate register. */ 53 AARCH64_SVE_P15_REGNUM = AARCH64_SVE_P0_REGNUM + 15, /* Last SVE predicate 54 register. */ 55 AARCH64_SVE_FFR_REGNUM, /* SVE First Fault Register. */ 56 AARCH64_SVE_VG_REGNUM, /* SVE Vector Granule. */ 57 58 /* Other useful registers. */ 59 AARCH64_LAST_X_ARG_REGNUM = AARCH64_X0_REGNUM + 7, 60 AARCH64_STRUCT_RETURN_REGNUM = AARCH64_X0_REGNUM + 8, 61 AARCH64_LAST_V_ARG_REGNUM = AARCH64_V0_REGNUM + 7 62 }; 63 64 #define V_REGISTER_SIZE 16 65 66 /* Pseudo register base numbers. */ 67 #define AARCH64_Q0_REGNUM 0 68 #define AARCH64_D0_REGNUM (AARCH64_Q0_REGNUM + AARCH64_D_REGISTER_COUNT) 69 #define AARCH64_S0_REGNUM (AARCH64_D0_REGNUM + 32) 70 #define AARCH64_H0_REGNUM (AARCH64_S0_REGNUM + 32) 71 #define AARCH64_B0_REGNUM (AARCH64_H0_REGNUM + 32) 72 #define AARCH64_SVE_V0_REGNUM (AARCH64_B0_REGNUM + 32) 73 74 #define AARCH64_PAUTH_DMASK_REGNUM(pauth_reg_base) (pauth_reg_base) 75 #define AARCH64_PAUTH_CMASK_REGNUM(pauth_reg_base) (pauth_reg_base + 1) 76 #define AARCH64_PAUTH_REGS_SIZE (16) 77 78 #define AARCH64_X_REGS_NUM 31 79 #define AARCH64_V_REGS_NUM 32 80 #define AARCH64_SVE_Z_REGS_NUM AARCH64_V_REGS_NUM 81 #define AARCH64_SVE_P_REGS_NUM 16 82 #define AARCH64_NUM_REGS AARCH64_FPCR_REGNUM + 1 83 #define AARCH64_SVE_NUM_REGS AARCH64_SVE_VG_REGNUM + 1 84 85 86 /* There are a number of ways of expressing the current SVE vector size: 87 88 VL : Vector Length. 89 The number of bytes in an SVE Z register. 90 VQ : Vector Quotient. 91 The number of 128bit chunks in an SVE Z register. 92 VG : Vector Granule. 93 The number of 64bit chunks in an SVE Z register. */ 94 95 #define sve_vg_from_vl(vl) ((vl) / 8) 96 #define sve_vl_from_vg(vg) ((vg) * 8) 97 #ifndef sve_vq_from_vl 98 #define sve_vq_from_vl(vl) ((vl) / 0x10) 99 #endif 100 #ifndef sve_vl_from_vq 101 #define sve_vl_from_vq(vq) ((vq) * 0x10) 102 #endif 103 #define sve_vq_from_vg(vg) (sve_vq_from_vl (sve_vl_from_vg (vg))) 104 #define sve_vg_from_vq(vq) (sve_vg_from_vl (sve_vl_from_vq (vq))) 105 106 107 /* Maximum supported VQ value. Increase if required. */ 108 #define AARCH64_MAX_SVE_VQ 16 109 110 #endif /* ARCH_AARCH64_H */ 111