mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-24 18:44:20 +08:00
6471e7d23d
This replaces "the the" with "the" in various comments. Tested by rebuilding. This didn't test the solib-dsbt.c change, but it looks harmless. gdb/ChangeLog 2019-01-17 Tom Tromey <tromey@bapiya> * valprint.c: Replace "the the" with "the". * symtab.c: Replace "the the" with "the". * solib.c: Replace "the the" with "the". * solib-dsbt.c: Replace "the the" with "the". * linespec.c: Replace "the the" with "the". * dwarf2loc.h: Replace "the the" with "the". * amd64-windows-tdep.c: Replace "the the" with "the". * aarch64-tdep.c: Replace "the the" with "the".
269 lines
8.7 KiB
C
269 lines
8.7 KiB
C
/* Copyright (C) 2018-2019 Free Software Foundation, Inc.
|
|
Contributed by Arm Ltd.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef AARCH64_SVE_LINUX_SIGCONTEXT_H
|
|
#define AARCH64_SVE_LINUX_SIGCONTEXT_H
|
|
|
|
#define SVE_MAGIC 0x53564501
|
|
|
|
struct sve_context {
|
|
struct _aarch64_ctx head;
|
|
__u16 vl;
|
|
__u16 __reserved[3];
|
|
};
|
|
|
|
/*
|
|
* The SVE architecture leaves space for future expansion of the
|
|
* vector length beyond its initial architectural limit of 2048 bits
|
|
* (16 quadwords).
|
|
*
|
|
* See linux/Documentation/arm64/sve.txt for a description of the VL/VQ
|
|
* terminology.
|
|
*/
|
|
#define SVE_VQ_BYTES 16 /* number of bytes per quadword */
|
|
|
|
#define SVE_VQ_MIN 1
|
|
#define SVE_VQ_MAX 512
|
|
|
|
#define SVE_VL_MIN (SVE_VQ_MIN * SVE_VQ_BYTES)
|
|
#define SVE_VL_MAX (SVE_VQ_MAX * SVE_VQ_BYTES)
|
|
|
|
#define SVE_NUM_ZREGS 32
|
|
#define SVE_NUM_PREGS 16
|
|
|
|
#define sve_vl_valid(vl) \
|
|
((vl) % SVE_VQ_BYTES == 0 && (vl) >= SVE_VL_MIN && (vl) <= SVE_VL_MAX)
|
|
|
|
/*
|
|
* If the SVE registers are currently live for the thread at signal delivery,
|
|
* sve_context.head.size >=
|
|
* SVE_SIG_CONTEXT_SIZE(sve_vq_from_vl(sve_context.vl))
|
|
* and the register data may be accessed using the SVE_SIG_*() macros.
|
|
*
|
|
* If sve_context.head.size <
|
|
* SVE_SIG_CONTEXT_SIZE(sve_vq_from_vl(sve_context.vl)),
|
|
* the SVE registers were not live for the thread and no register data
|
|
* is included: in this case, the SVE_SIG_*() macros should not be
|
|
* used except for this check.
|
|
*
|
|
* The same convention applies when returning from a signal: a caller
|
|
* will need to remove or resize the sve_context block if it wants to
|
|
* make the SVE registers live when they were previously non-live or
|
|
* vice-versa. This may require the caller to allocate fresh
|
|
* memory and/or move other context blocks in the signal frame.
|
|
*
|
|
* Changing the vector length during signal return is not permitted:
|
|
* sve_context.vl must equal the thread's current vector length when
|
|
* doing a sigreturn.
|
|
*
|
|
*
|
|
* Note: for all these macros, the "vq" argument denotes the SVE
|
|
* vector length in quadwords (i.e., units of 128 bits).
|
|
*
|
|
* The correct way to obtain vq is to use sve_vq_from_vl(vl). The
|
|
* result is valid if and only if sve_vl_valid(vl) is true. This is
|
|
* guaranteed for a struct sve_context written by the kernel.
|
|
*
|
|
*
|
|
* Additional macros describe the contents and layout of the payload.
|
|
* For each, SVE_SIG_x_OFFSET(args) is the start offset relative to
|
|
* the start of struct sve_context, and SVE_SIG_x_SIZE(args) is the
|
|
* size in bytes:
|
|
*
|
|
* x type description
|
|
* - ---- -----------
|
|
* REGS the entire SVE context
|
|
*
|
|
* ZREGS __uint128_t[SVE_NUM_ZREGS][vq] all Z-registers
|
|
* ZREG __uint128_t[vq] individual Z-register Zn
|
|
*
|
|
* PREGS uint16_t[SVE_NUM_PREGS][vq] all P-registers
|
|
* PREG uint16_t[vq] individual P-register Pn
|
|
*
|
|
* FFR uint16_t[vq] first-fault status register
|
|
*
|
|
* Additional data might be appended in the future.
|
|
*/
|
|
|
|
#define SVE_SIG_ZREG_SIZE(vq) ((__u32)(vq) * SVE_VQ_BYTES)
|
|
#define SVE_SIG_PREG_SIZE(vq) ((__u32)(vq) * (SVE_VQ_BYTES / 8))
|
|
#define SVE_SIG_FFR_SIZE(vq) SVE_SIG_PREG_SIZE(vq)
|
|
|
|
#define SVE_SIG_REGS_OFFSET \
|
|
((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \
|
|
/ SVE_VQ_BYTES * SVE_VQ_BYTES)
|
|
|
|
#define SVE_SIG_ZREGS_OFFSET SVE_SIG_REGS_OFFSET
|
|
#define SVE_SIG_ZREG_OFFSET(vq, n) \
|
|
(SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREG_SIZE(vq) * (n))
|
|
#define SVE_SIG_ZREGS_SIZE(vq) \
|
|
(SVE_SIG_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_SIG_ZREGS_OFFSET)
|
|
|
|
#define SVE_SIG_PREGS_OFFSET(vq) \
|
|
(SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREGS_SIZE(vq))
|
|
#define SVE_SIG_PREG_OFFSET(vq, n) \
|
|
(SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREG_SIZE(vq) * (n))
|
|
#define SVE_SIG_PREGS_SIZE(vq) \
|
|
(SVE_SIG_PREG_OFFSET(vq, SVE_NUM_PREGS) - SVE_SIG_PREGS_OFFSET(vq))
|
|
|
|
#define SVE_SIG_FFR_OFFSET(vq) \
|
|
(SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREGS_SIZE(vq))
|
|
|
|
#define SVE_SIG_REGS_SIZE(vq) \
|
|
(SVE_SIG_FFR_OFFSET(vq) + SVE_SIG_FFR_SIZE(vq) - SVE_SIG_REGS_OFFSET)
|
|
|
|
#define SVE_SIG_CONTEXT_SIZE(vq) (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq))
|
|
|
|
/* SVE/FP/SIMD state (NT_ARM_SVE) */
|
|
|
|
struct user_sve_header {
|
|
__u32 size; /* total meaningful regset content in bytes */
|
|
__u32 max_size; /* maxmium possible size for this thread */
|
|
__u16 vl; /* current vector length */
|
|
__u16 max_vl; /* maximum possible vector length */
|
|
__u16 flags;
|
|
__u16 __reserved;
|
|
};
|
|
|
|
/* Definitions for user_sve_header.flags: */
|
|
#define SVE_PT_REGS_MASK (1 << 0)
|
|
|
|
#define SVE_PT_REGS_FPSIMD 0
|
|
#define SVE_PT_REGS_SVE SVE_PT_REGS_MASK
|
|
|
|
/*
|
|
* Common SVE_PT_* flags:
|
|
* These must be kept in sync with prctl interface in <linux/ptrace.h>
|
|
*/
|
|
#define SVE_PT_VL_INHERIT (PR_SVE_VL_INHERIT >> 16)
|
|
#define SVE_PT_VL_ONEXEC (PR_SVE_SET_VL_ONEXEC >> 16)
|
|
|
|
|
|
/*
|
|
* The remainder of the SVE state follows struct user_sve_header. The
|
|
* total size of the SVE state (including header) depends on the
|
|
* metadata in the header: SVE_PT_SIZE(vq, flags) gives the total size
|
|
* of the state in bytes, including the header.
|
|
*
|
|
* Refer to <asm/sigcontext.h> for details of how to pass the correct
|
|
* "vq" argument to these macros.
|
|
*/
|
|
|
|
/* Offset from the start of struct user_sve_header to the register data */
|
|
#define SVE_PT_REGS_OFFSET \
|
|
((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \
|
|
/ SVE_VQ_BYTES * SVE_VQ_BYTES)
|
|
|
|
/*
|
|
* The register data content and layout depends on the value of the
|
|
* flags field.
|
|
*/
|
|
|
|
/*
|
|
* (flags & SVE_PT_REGS_MASK) == SVE_PT_REGS_FPSIMD case:
|
|
*
|
|
* The payload starts at offset SVE_PT_FPSIMD_OFFSET, and is of type
|
|
* struct user_fpsimd_state. Additional data might be appended in the
|
|
* future: use SVE_PT_FPSIMD_SIZE(vq, flags) to compute the total size.
|
|
* SVE_PT_FPSIMD_SIZE(vq, flags) will never be less than
|
|
* sizeof(struct user_fpsimd_state).
|
|
*/
|
|
|
|
#define SVE_PT_FPSIMD_OFFSET SVE_PT_REGS_OFFSET
|
|
|
|
#define SVE_PT_FPSIMD_SIZE(vq, flags) (sizeof(struct user_fpsimd_state))
|
|
|
|
/*
|
|
* (flags & SVE_PT_REGS_MASK) == SVE_PT_REGS_SVE case:
|
|
*
|
|
* The payload starts at offset SVE_PT_SVE_OFFSET, and is of size
|
|
* SVE_PT_SVE_SIZE(vq, flags).
|
|
*
|
|
* Additional macros describe the contents and layout of the payload.
|
|
* For each, SVE_PT_SVE_x_OFFSET(args) is the start offset relative to
|
|
* the start of struct user_sve_header, and SVE_PT_SVE_x_SIZE(args) is
|
|
* the size in bytes:
|
|
*
|
|
* x type description
|
|
* - ---- -----------
|
|
* ZREGS \
|
|
* ZREG |
|
|
* PREGS | refer to <asm/sigcontext.h>
|
|
* PREG |
|
|
* FFR /
|
|
*
|
|
* FPSR uint32_t FPSR
|
|
* FPCR uint32_t FPCR
|
|
*
|
|
* Additional data might be appended in the future.
|
|
*/
|
|
|
|
#define SVE_PT_SVE_ZREG_SIZE(vq) SVE_SIG_ZREG_SIZE(vq)
|
|
#define SVE_PT_SVE_PREG_SIZE(vq) SVE_SIG_PREG_SIZE(vq)
|
|
#define SVE_PT_SVE_FFR_SIZE(vq) SVE_SIG_FFR_SIZE(vq)
|
|
#define SVE_PT_SVE_FPSR_SIZE sizeof(__u32)
|
|
#define SVE_PT_SVE_FPCR_SIZE sizeof(__u32)
|
|
|
|
#define __SVE_SIG_TO_PT(offset) \
|
|
((offset) - SVE_SIG_REGS_OFFSET + SVE_PT_REGS_OFFSET)
|
|
|
|
#define SVE_PT_SVE_OFFSET SVE_PT_REGS_OFFSET
|
|
|
|
#define SVE_PT_SVE_ZREGS_OFFSET \
|
|
__SVE_SIG_TO_PT(SVE_SIG_ZREGS_OFFSET)
|
|
#define SVE_PT_SVE_ZREG_OFFSET(vq, n) \
|
|
__SVE_SIG_TO_PT(SVE_SIG_ZREG_OFFSET(vq, n))
|
|
#define SVE_PT_SVE_ZREGS_SIZE(vq) \
|
|
(SVE_PT_SVE_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_PT_SVE_ZREGS_OFFSET)
|
|
|
|
#define SVE_PT_SVE_PREGS_OFFSET(vq) \
|
|
__SVE_SIG_TO_PT(SVE_SIG_PREGS_OFFSET(vq))
|
|
#define SVE_PT_SVE_PREG_OFFSET(vq, n) \
|
|
__SVE_SIG_TO_PT(SVE_SIG_PREG_OFFSET(vq, n))
|
|
#define SVE_PT_SVE_PREGS_SIZE(vq) \
|
|
(SVE_PT_SVE_PREG_OFFSET(vq, SVE_NUM_PREGS) - \
|
|
SVE_PT_SVE_PREGS_OFFSET(vq))
|
|
|
|
#define SVE_PT_SVE_FFR_OFFSET(vq) \
|
|
__SVE_SIG_TO_PT(SVE_SIG_FFR_OFFSET(vq))
|
|
|
|
#define SVE_PT_SVE_FPSR_OFFSET(vq) \
|
|
((SVE_PT_SVE_FFR_OFFSET(vq) + SVE_PT_SVE_FFR_SIZE(vq) + \
|
|
(SVE_VQ_BYTES - 1)) \
|
|
/ SVE_VQ_BYTES * SVE_VQ_BYTES)
|
|
#define SVE_PT_SVE_FPCR_OFFSET(vq) \
|
|
(SVE_PT_SVE_FPSR_OFFSET(vq) + SVE_PT_SVE_FPSR_SIZE)
|
|
|
|
/*
|
|
* Any future extension appended after FPCR must be aligned to the next
|
|
* 128-bit boundary.
|
|
*/
|
|
|
|
#define SVE_PT_SVE_SIZE(vq, flags) \
|
|
((SVE_PT_SVE_FPCR_OFFSET(vq) + SVE_PT_SVE_FPCR_SIZE \
|
|
- SVE_PT_SVE_OFFSET + (SVE_VQ_BYTES - 1)) \
|
|
/ SVE_VQ_BYTES * SVE_VQ_BYTES)
|
|
|
|
#define SVE_PT_SIZE(vq, flags) \
|
|
(((flags) & SVE_PT_REGS_MASK) == SVE_PT_REGS_SVE ? \
|
|
SVE_PT_SVE_OFFSET + SVE_PT_SVE_SIZE(vq, flags) \
|
|
: SVE_PT_FPSIMD_OFFSET + SVE_PT_FPSIMD_SIZE(vq, flags))
|
|
|
|
|
|
#endif /* AARCH64_SVE_LINUX_SIGCONTEXT_H */
|