On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <i...@bsdimp.com> wrote:
>
> Get the machine context from the CPU state.
>
> Signed-off-by: Stacey Son <s...@freebsd.org>
> Signed-off-by: Klye Evans <kev...@freebsd.org>
> Signed-off-by: Warner Losh <i...@bsdimp.com>
> ---
> bsd-user/arm/target_arch_signal.h | 38 +++++++++++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_signal.h
> b/bsd-user/arm/target_arch_signal.h
> index b421c2522c..302fdc2846 100644
> --- a/bsd-user/arm/target_arch_signal.h
> +++ b/bsd-user/arm/target_arch_signal.h
> @@ -163,4 +163,42 @@ set_sigtramp_args(CPUARMState *regs, int sig, struct
> target_sigframe *frame,
> return 0;
> }
>
> +/*
> + * Compare to arm/arm/machdep.c get_mcontext()
> + * Assumes that the memory is locked if mcp points to user memory.
> + */
> +static inline abi_long get_mcontext(CPUARMState *regs, target_mcontext_t
> *mcp,
> + int flags)
> +{
> + int err = 0;
> + uint32_t *gr = mcp->__gregs;
> +
> + gr[TARGET_REG_CPSR] = tswap32(cpsr_read(regs));
> + if (flags & TARGET_MC_GET_CLEAR_RET) {
> + gr[TARGET_REG_R0] = 0;
> + gr[TARGET_REG_CPSR] &= ~CPSR_C;
> + } else {
> + gr[TARGET_REG_R0] = tswap32(regs->regs[0]);
> + }
> +
> + gr[TARGET_REG_R1] = tswap32(regs->regs[1]);
> + gr[TARGET_REG_R2] = tswap32(regs->regs[2]);
> + gr[TARGET_REG_R3] = tswap32(regs->regs[3]);
> + gr[TARGET_REG_R4] = tswap32(regs->regs[4]);
> + gr[TARGET_REG_R5] = tswap32(regs->regs[5]);
> + gr[TARGET_REG_R6] = tswap32(regs->regs[6]);
> + gr[TARGET_REG_R7] = tswap32(regs->regs[7]);
> + gr[TARGET_REG_R8] = tswap32(regs->regs[8]);
> + gr[TARGET_REG_R9] = tswap32(regs->regs[9]);
> + gr[TARGET_REG_R10] = tswap32(regs->regs[10]);
> + gr[TARGET_REG_R11] = tswap32(regs->regs[11]);
> + gr[TARGET_REG_R12] = tswap32(regs->regs[12]);
> +
> + gr[TARGET_REG_SP] = tswap32(regs->regs[13]);
> + gr[TARGET_REG_LR] = tswap32(regs->regs[14]);
> + gr[TARGET_REG_PC] = tswap32(regs->regs[15]);
> +
> + return err;
> +}
> +
> #endif /* !_TARGET_ARCH_SIGNAL_H_ */
> --
> 2.32.0
>
Reviewed-by: Kyle Evans <kev...@freebsd.org>
