Re: [PATCH 17/24] bsd-user/arm/target_arch_signal.h: arm specific signal registers and stack

[Kyle Evans]

On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <imp@bsdimp.com> wrote:
>
> Defines for registers and stack layout related to signals.
>
> Signed-off-by: Stacey Son <sson@FreeBSD.org>
> Signed-off-by: Warner Losh <imp@bsdimp.com>
> ---
>  bsd-user/arm/target_arch_signal.h | 57 +++++++++++++++++++++++++++++++
>  1 file changed, 57 insertions(+)
>  create mode 100644 bsd-user/arm/target_arch_signal.h
>
> diff --git a/bsd-user/arm/target_arch_signal.h 
> b/bsd-user/arm/target_arch_signal.h
> new file mode 100644
> index 0000000000..973183d99c
> --- /dev/null
> +++ b/bsd-user/arm/target_arch_signal.h
> @@ -0,0 +1,57 @@
> +/*
> + *  arm signal definitions
> + *
> + *  Copyright (c) 2013 Stacey D. Son
> + *
> + *  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 2 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 _TARGET_ARCH_SIGNAL_H_
> +#define _TARGET_ARCH_SIGNAL_H_
> +
> +#include "cpu.h"
> +
> +#define TARGET_REG_R0   0
> +#define TARGET_REG_R1   1
> +#define TARGET_REG_R2   2
> +#define TARGET_REG_R3   3
> +#define TARGET_REG_R4   4
> +#define TARGET_REG_R5   5
> +#define TARGET_REG_R6   6
> +#define TARGET_REG_R7   7
> +#define TARGET_REG_R8   8
> +#define TARGET_REG_R9   9
> +#define TARGET_REG_R10  10
> +#define TARGET_REG_R11  11
> +#define TARGET_REG_R12  12
> +#define TARGET_REG_R13  13
> +#define TARGET_REG_R14  14
> +#define TARGET_REG_R15  15
> +#define TARGET_REG_CPSR 16
> +#define TARGET__NGREG   17
> +/* Convenience synonyms */
> +#define TARGET_REG_FP   TARGET_REG_R11
> +#define TARGET_REG_SP   TARGET_REG_R13
> +#define TARGET_REG_LR   TARGET_REG_R14
> +#define TARGET_REG_PC   TARGET_REG_R15
> +
> +#define TARGET_INSN_SIZE    4       /* arm instruction size */
> +
> +/* Size of the signal trampolin code. See _sigtramp(). */
> +#define TARGET_SZSIGCODE    ((abi_ulong)(9 * TARGET_INSN_SIZE))
> +
> +/* compare to arm/include/_limits.h */
> +#define TARGET_MINSIGSTKSZ  (1024 * 4)                  /* min sig stack 
> size */
> +#define TARGET_SIGSTKSZ     (TARGET_MINSIGSTKSZ + 32768)  /* recommended 
> size */
> +
> +#endif /* !_TARGET_ARCH_SIGNAL_H_ */
> --
> 2.32.0
>

Reviewed-by: Kyle Evans <kevans@FreeBSD.org>