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39bfb9373c
Previously VQ was of type long. Using uint64_t ensures it always matches the same type as the VG register. Note that in the Linux kernel, VQ is 16bits. We cast it up to 64bits immediately after reading to ensure we always use the same type throughout the code. gdb/ * aarch64-tdep.c (aarch64_read_description): Use uint64_t for VQ. * aarch64-tdep.h (aarch64_read_description): Likewise. * arch/aarch64.c (aarch64_create_target_description): Likewise. * arch/aarch64.h (aarch64_create_target_description): Likewise. * features/aarch64-sve.c (create_feature_aarch64_sve): Likewise. * nat/aarch64-sve-linux-ptrace.c(aarch64_sve_get_vq): Likewise. * nat/aarch64-sve-linux-ptrace.h (aarch64_sve_get_vq): Likewise.
89 lines
3.4 KiB
C
89 lines
3.4 KiB
C
/* Common target-dependent functionality for AArch64.
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Copyright (C) 2017-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef ARCH_AARCH64_H
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#define ARCH_AARCH64_H
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#include "common/tdesc.h"
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/* Create the aarch64 target description. A non zero VQ value indicates both
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the presence of SVE and the Vector Quotient - the number of 128bit chunks in
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an SVE Z register. */
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target_desc *aarch64_create_target_description (uint64_t vq);
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/* Register numbers of various important registers.
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Note that on SVE, the Z registers reuse the V register numbers and the V
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registers become pseudo registers. */
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enum aarch64_regnum
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{
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AARCH64_X0_REGNUM, /* First integer register. */
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AARCH64_FP_REGNUM = AARCH64_X0_REGNUM + 29, /* Frame register, if used. */
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AARCH64_LR_REGNUM = AARCH64_X0_REGNUM + 30, /* Return address. */
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AARCH64_SP_REGNUM, /* Stack pointer. */
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AARCH64_PC_REGNUM, /* Program counter. */
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AARCH64_CPSR_REGNUM, /* Current Program Status Register. */
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AARCH64_V0_REGNUM, /* First fp/vec register. */
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AARCH64_V31_REGNUM = AARCH64_V0_REGNUM + 31, /* Last fp/vec register. */
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AARCH64_SVE_Z0_REGNUM = AARCH64_V0_REGNUM, /* First SVE Z register. */
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AARCH64_SVE_Z31_REGNUM = AARCH64_V31_REGNUM, /* Last SVE Z register. */
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AARCH64_FPSR_REGNUM, /* Floating Point Status Register. */
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AARCH64_FPCR_REGNUM, /* Floating Point Control Register. */
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AARCH64_SVE_P0_REGNUM, /* First SVE predicate register. */
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AARCH64_SVE_P15_REGNUM = AARCH64_SVE_P0_REGNUM + 15, /* Last SVE predicate
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register. */
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AARCH64_SVE_FFR_REGNUM, /* SVE First Fault Register. */
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AARCH64_SVE_VG_REGNUM, /* SVE Vector Gradient. */
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/* Other useful registers. */
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AARCH64_LAST_X_ARG_REGNUM = AARCH64_X0_REGNUM + 7,
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AARCH64_STRUCT_RETURN_REGNUM = AARCH64_X0_REGNUM + 8,
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AARCH64_LAST_V_ARG_REGNUM = AARCH64_V0_REGNUM + 7
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};
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#define AARCH64_X_REGS_NUM 31
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#define AARCH64_V_REGS_NUM 32
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#define AARCH64_SVE_Z_REGS_NUM AARCH64_V_REGS_NUM
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#define AARCH64_SVE_P_REGS_NUM 16
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#define AARCH64_NUM_REGS AARCH64_FPCR_REGNUM + 1
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#define AARCH64_SVE_NUM_REGS AARCH64_SVE_VG_REGNUM + 1
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/* There are a number of ways of expressing the current SVE vector size:
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VL : Vector Length.
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The number of bytes in an SVE Z register.
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VQ : Vector Quotient.
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The number of 128bit chunks in an SVE Z register.
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VG : Vector Gradient.
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The number of 64bit chunks in an SVE Z register. */
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#define sve_vg_from_vl(vl) ((vl) / 8)
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#define sve_vl_from_vg(vg) ((vg) * 8)
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#define sve_vq_from_vl(vl) ((vl) / 0x10)
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#define sve_vl_from_vq(vq) ((vq) * 0x10)
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#define sve_vq_from_vg(vg) (sve_vq_from_vl (sve_vl_from_vg (vg)))
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#define sve_vg_from_vq(vq) (sve_vg_from_vl (sve_vl_from_vq (vq)))
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/* Maximum supported VQ value. Increase if required. */
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#define AARCH64_MAX_SVE_VQ 16
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#endif /* ARCH_AARCH64_H */
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