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

[Richard Henderson]

On 10/19/21 9:44 AM, Warner Losh wrote:
> +/* 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]; */
> +};

From the set of registers, this seems to be copied from mips.

The contents of sys/arm/include/signal.h are

struct sigcontext {
        int _dummy;
};

so I'm not sure what you're doing here.


r~