Re: [PATCH 22/24] bsd-user/arm/target_arch_signal.h: arm set_mcontext

[Kyle Evans]

On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <imp@bsdimp.com> wrote:
>
> Move the machine context to the CPU state.
>
> 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_signal.h | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_signal.h 
> b/bsd-user/arm/target_arch_signal.h
> index 302fdc2846..1d051af9ae 100644
> --- a/bsd-user/arm/target_arch_signal.h
> +++ b/bsd-user/arm/target_arch_signal.h
> @@ -201,4 +201,35 @@ static inline abi_long get_mcontext(CPUARMState *regs, 
> target_mcontext_t *mcp,
>      return err;
>  }
>
> +/* Compare to arm/arm/machdep.c set_mcontext() */
> +static inline abi_long set_mcontext(CPUARMState *regs, target_mcontext_t 
> *mcp,
> +        int srflag)
> +{
> +    int err = 0;
> +    const uint32_t *gr = mcp->__gregs;
> +    uint32_t cpsr;
> +
> +    regs->regs[0] = tswap32(gr[TARGET_REG_R0]);
> +    regs->regs[1] = tswap32(gr[TARGET_REG_R1]);
> +    regs->regs[2] = tswap32(gr[TARGET_REG_R2]);
> +    regs->regs[3] = tswap32(gr[TARGET_REG_R3]);
> +    regs->regs[4] = tswap32(gr[TARGET_REG_R4]);
> +    regs->regs[5] = tswap32(gr[TARGET_REG_R5]);
> +    regs->regs[6] = tswap32(gr[TARGET_REG_R6]);
> +    regs->regs[7] = tswap32(gr[TARGET_REG_R7]);
> +    regs->regs[8] = tswap32(gr[TARGET_REG_R8]);
> +    regs->regs[9] = tswap32(gr[TARGET_REG_R9]);
> +    regs->regs[10] = tswap32(gr[TARGET_REG_R10]);
> +    regs->regs[11] = tswap32(gr[TARGET_REG_R11]);
> +    regs->regs[12] = tswap32(gr[TARGET_REG_R12]);
> +
> +    regs->regs[13] = tswap32(gr[TARGET_REG_SP]);
> +    regs->regs[14] = tswap32(gr[TARGET_REG_LR]);
> +    regs->regs[15] = tswap32(gr[TARGET_REG_PC]);
> +    cpsr = tswap32(gr[TARGET_REG_CPSR]);
> +    cpsr_write(regs, cpsr, CPSR_USER | CPSR_EXEC, CPSRWriteByInstr);
> +
> +    return err;
> +}
> +
>  #endif /* !_TARGET_ARCH_SIGNAL_H_ */
> --
> 2.32.0
>

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