Re: [PATCH 18/24] bsd-user/arm/target_arch_signal.h: arm machine context for signals

[Kyle Evans]

On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <imp@bsdimp.com> wrote:
>
> 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 | 36 +++++++++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_signal.h 
> b/bsd-user/arm/target_arch_signal.h
> index 973183d99c..9fee58ca9c 100644
> --- a/bsd-user/arm/target_arch_signal.h
> +++ b/bsd-user/arm/target_arch_signal.h
> @@ -54,4 +54,40 @@
>  #define TARGET_MINSIGSTKSZ  (1024 * 4)                  /* min sig stack 
> size */
>  #define TARGET_SIGSTKSZ     (TARGET_MINSIGSTKSZ + 32768)  /* recommended 
> size */
>
> +/* arm/arm/machdep.c */
> +struct target_sigcontext {
> +    target_sigset_t sc_mask;    /* signal mask to retstore */
> +    int32_t     sc_onstack;     /* sigstack state to restore */
> +    abi_long    sc_pc;          /* pc at time of signal */
> +    abi_long    sc_reg[32];     /* processor regs 0 to 31 */
> +    abi_long    mullo, mulhi;   /* mullo and mulhi registers */
> +    int32_t     sc_fpused;      /* fp has been used */
> +    abi_long    sc_fpregs[33];  /* fp regs 0 to 31 & csr */
> +    abi_long    sc_fpc_eir;     /* fp exception instr reg */
> +    /* int32_t reserved[8]; */
> +};
> +
> +typedef struct {
> +    uint32_t    __fp_fpsr;
> +    struct {
> +        uint32_t    __fp_exponent;
> +        uint32_t    __fp_mantissa_hi;
> +        uint32_t    __fp_mantissa_lo;
> +    }       __fp_fr[8];
> +} target__fpregset_t;
> +
> +typedef struct {
> +    uint32_t    __vfp_fpscr;
> +    uint32_t    __vfp_fstmx[33];
> +    uint32_t    __vfp_fpsid;
> +} target__vfpregset_t;
> +
> +typedef struct target_mcontext {
> +    uint32_t        __gregs[TARGET__NGREG];
> +    union {
> +        target__fpregset_t  __fpregs;
> +        target__vfpregset_t __vfpregs;
> +    } __fpu;
> +} target_mcontext_t;
> +
>  #endif /* !_TARGET_ARCH_SIGNAL_H_ */
> --
> 2.32.0
>

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