Re: [PATCH 11/24] bsd-user/arm/target_arch_vmparam.h: Parameters for arm address space

[Kyle Evans]

On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <imp@bsdimp.com> wrote:
>
> Various parameters describing the layout of the ARM address space. In
> addition, define routines to get the stack pointer and to set the second
> return value.
>
> Signed-off-by: Stacey Son <sson@FreeBSD.org>
> Signed-off-by: Klye Evans <kevans@FreeBSD.org>
> Signed-off-by: Warner Losh <imp@bsdimp.com>
> ---
>  bsd-user/arm/target_arch_vmparam.h | 48 ++++++++++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 bsd-user/arm/target_arch_vmparam.h
>
> diff --git a/bsd-user/arm/target_arch_vmparam.h 
> b/bsd-user/arm/target_arch_vmparam.h
> new file mode 100644
> index 0000000000..4bbc04ddf5
> --- /dev/null
> +++ b/bsd-user/arm/target_arch_vmparam.h
> @@ -0,0 +1,48 @@
> +/*
> + *  arm VM parameters 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_VMPARAM_H_
> +#define _TARGET_ARCH_VMPARAM_H_
> +
> +#include "cpu.h"
> +
> +/* compare to sys/arm/include/vmparam.h */
> +#define TARGET_MAXTSIZ      (64 * MiB)           /* max text size */
> +#define TARGET_DFLDSIZ      (128 * MiB)          /* initial data size limit 
> */
> +#define TARGET_MAXDSIZ      (512 * MiB)          /* max data size */
> +#define TARGET_DFLSSIZ      (4 * MiB)            /* initial stack size limit 
> */
> +#define TARGET_MAXSSIZ      (64 * MiB)           /* max stack size */
> +#define TARGET_SGROWSIZ     (128 * KiB)          /* amount to grow stack */
> +
> +#define TARGET_RESERVED_VA  0xf7000000
> +
> +                /* KERNBASE - 512 MB */
> +#define TARGET_VM_MAXUSER_ADDRESS   (0xc0000000 - (512 * MiB))
> +#define TARGET_USRSTACK             TARGET_VM_MAXUSER_ADDRESS
> +
> +static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
> +{
> +    return state->regs[13]; /* sp */
> +}
> +
> +static inline void set_second_rval(CPUARMState *state, abi_ulong retval2)
> +{
> +    state->regs[1] = retval2;
> +}
> +
> +#endif  /* ! _TARGET_ARCH_VMPARAM_H_ */
> --
> 2.32.0
>

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