/*      $NetBSD: netbsd32_machdep.h,v 1.4 2020/07/02 13:04:47 rin Exp $ */

#ifndef _MACHINE_NETBSD32_H_
#define _MACHINE_NETBSD32_H_

#include <sys/ucontext.h>
#include <compat/sys/ucontext.h>
#include <compat/sys/siginfo.h>

/*
 * arm ptrace constants
 * Please keep in sync with sys/arch/arm/include/ptrace.h.
 */
#define PT32_STEP       (PT_FIRSTMACH + 0) /* Not implemented */
#define PT32_GETREGS    (PT_FIRSTMACH + 1)
#define PT32_SETREGS    (PT_FIRSTMACH + 2)
#define PT32_GETFPREGS  (PT_FIRSTMACH + 5)
#define PT32_SETFPREGS  (PT_FIRSTMACH + 6)
#define PT32_SETSTEP    (PT_FIRSTMACH + 7) /* Not implemented */
#define PT32_CLEARSTEP  (PT_FIRSTMACH + 8) /* Not implemented */

#define NETBSD32_POINTER_TYPE uint32_t
typedef struct { NETBSD32_POINTER_TYPE i32; } netbsd32_pointer_t;

/* earm has 64bit aligned 64bit integers */
#define NETBSD32_INT64_ALIGN __attribute__((__aligned__(8)))

typedef netbsd32_pointer_t netbsd32_sigcontextp_t;

struct netbsd32_sigcontext13 {
        int32_t         sc_onstack;             /* sigstack state to restore */
        int32_t         __sc_mask13;            /* signal mask to restore (old style) */

        uint32_t        sc_spsr;
        uint32_t        sc_r0;
        uint32_t        sc_r1;
        uint32_t        sc_r2;
        uint32_t        sc_r3;
        uint32_t        sc_r4;
        uint32_t        sc_r5;
        uint32_t        sc_r6;
        uint32_t        sc_r7;
        uint32_t        sc_r8;
        uint32_t        sc_r9;
        uint32_t        sc_r10;
        uint32_t        sc_r11;
        uint32_t        sc_r12;
        uint32_t        sc_usr_sp;
        uint32_t        sc_usr_lr;
        uint32_t        sc_svc_lr;
        uint32_t        sc_pc;
};

struct netbsd32_sigcontext {
        int32_t         sc_onstack;             /* sigstack state to restore */
        int32_t         __sc_mask13;            /* signal mask to restore (old style) */

        uint32_t        sc_spsr;
        uint32_t        sc_r0;
        uint32_t        sc_r1;
        uint32_t        sc_r2;
        uint32_t        sc_r3;
        uint32_t        sc_r4;
        uint32_t        sc_r5;
        uint32_t        sc_r6;
        uint32_t        sc_r7;
        uint32_t        sc_r8;
        uint32_t        sc_r9;
        uint32_t        sc_r10;
        uint32_t        sc_r11;
        uint32_t        sc_r12;
        uint32_t        sc_usr_sp;
        uint32_t        sc_usr_lr;
        uint32_t        sc_svc_lr;
        uint32_t        sc_pc;

        sigset_t        sc_mask;                /* signal mask to restore (new style) */
};

struct netbsd32_sigframe_siginfo {
        siginfo32_t sf_si;
        ucontext32_t sf_uc;
};

struct reg32 {
        uint32_t r[13];
        uint32_t r_sp;
        uint32_t r_lr;
        uint32_t r_pc;
        uint32_t r_cpsr;
};

struct vfpreg32 {
        uint32_t vfp_fpexc;
        uint32_t vfp_fpscr;
        uint32_t vfp_fpinst;
        uint32_t vfp_fpinst2;
        uint64_t vfp_regs[33];  /* In case we need fstmx format. */
};

struct fpreg32 {
        struct vfpreg32 fpr_vfp;
};

/* same as cpustate in arm/arm/core_machdep.c  */
struct netbsd32_cpustate {
        struct reg32 regs;
        struct fpreg32 fpregs;
};

/* compat netbsd/arm sysarch(2) */
#define ARM_SYNC_ICACHE         0
#define ARM_DRAIN_WRITEBUF      1
#define ARM_VFP_FPSCR           2
#define ARM_FPU_USED            3

struct netbsd32_arm_sync_icache_args {
        uint32_t addr;          /* Virtual start address */
        uint32_t len;           /* Region size */
};

/* Support varying ABI names for netbsd32 */
#define PROC_MACHINE_ARCH32(P)  ((P)->p_md.md_march32)

/* Translate ptrace() PT_* request from 32-bit userland to kernel. */
int netbsd32_ptrace_translate_request(int);

int netbsd32_process_read_regs(struct lwp *, struct reg32 *);
int netbsd32_process_read_fpregs(struct lwp *, struct fpreg32 *, size_t *);

int netbsd32_process_write_regs(struct lwp *, const struct reg32 *);
int netbsd32_process_write_fpregs(struct lwp *, const struct fpreg32 *, size_t);

#endif /* _MACHINE_NETBSD32_H_ */