/* $NetBSD: netbsd32_machdep.h,v 1.25 2019/11/27 09:16:58 rin Exp $ */

/* $NetBSD: netbsd32_machdep.h,v 1.25 2019/11/27 09:16:58 rin Exp $ */

#ifndef _MACHINE_NETBSD32_H_
#define _MACHINE_NETBSD32_H_

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

#include <x86/fpu.h>

/*
* i386 ptrace constants
* Please keep in sync with sys/arch/i386/include/ptrace.h.
*/
#define PT32_STEP (PT_FIRSTMACH + 0)
#define PT32_GETREGS (PT_FIRSTMACH + 1)
#define PT32_SETREGS (PT_FIRSTMACH + 2)
#define PT32_GETFPREGS (PT_FIRSTMACH + 3)
#define PT32_SETFPREGS (PT_FIRSTMACH + 4)
#define PT32_GETXMMREGS (PT_FIRSTMACH + 5)
#define PT32_SETXMMREGS (PT_FIRSTMACH + 6)
#define PT32_GETDBREGS (PT_FIRSTMACH + 7)
#define PT32_SETDBREGS (PT_FIRSTMACH + 8)
#define PT32_SETSTEP (PT_FIRSTMACH + 9)
#define PT32_CLEARSTEP (PT_FIRSTMACH + 10)
#define PT32_GETXSTATE (PT_FIRSTMACH + 11)
#define PT32_SETXSTATE (PT_FIRSTMACH + 12)

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

/* i386 has 32bit aligned 64bit integers */
#define NETBSD32_INT64_ALIGN __attribute__((__aligned__(4)))

typedef netbsd32_pointer_t netbsd32_sigcontextp_t;

struct netbsd32_sigcontext13 {
uint32_t sc_gs;
uint32_t sc_fs;
uint32_t sc_es;
uint32_t sc_ds;
uint32_t sc_edi;
uint32_t sc_esi;
uint32_t sc_ebp;
uint32_t sc_ebx;
uint32_t sc_edx;
uint32_t sc_ecx;
uint32_t sc_eax;
/* XXX */
uint32_t sc_eip;
uint32_t sc_cs;
uint32_t sc_eflags;
uint32_t sc_esp;
uint32_t sc_ss;

uint32_t sc_onstack; /* sigstack state to restore */
uint32_t sc_mask; /* signal mask to restore (old style) */

uint32_t sc_trapno; /* XXX should be above */
uint32_t sc_err;
};

struct netbsd32_sigcontext {
uint32_t sc_gs;
uint32_t sc_fs;
uint32_t sc_es;
uint32_t sc_ds;
uint32_t sc_edi;
uint32_t sc_esi;
uint32_t sc_ebp;
uint32_t sc_ebx;
uint32_t sc_edx;
uint32_t sc_ecx;
uint32_t sc_eax;
/* XXX */
uint32_t sc_eip;
uint32_t sc_cs;
uint32_t sc_eflags;
uint32_t sc_esp;
uint32_t sc_ss;

uint32_t sc_onstack; /* sigstack state to restore */
uint32_t __sc_mask13; /* signal mask to restore (old style) */

uint32_t sc_trapno; /* XXX should be above */
uint32_t sc_err;

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

#define sc_sp sc_esp
#define sc_fp sc_ebp
#define sc_pc sc_eip
#define sc_ps sc_eflags

struct netbsd32_sigframe_sigcontext {
uint32_t sf_ra;
int32_t sf_signum;
int32_t sf_code;
uint32_t sf_scp;
struct netbsd32_sigcontext sf_sc;
};

struct netbsd32_sigframe_siginfo {
uint32_t sf_ra;
int32_t sf_signum;
uint32_t sf_sip;
uint32_t sf_ucp;
siginfo32_t sf_si;
ucontext32_t sf_uc;
};

struct reg32 {
int r_eax;
int r_ecx;
int r_edx;
int r_ebx;
int r_esp;
int r_ebp;
int r_esi;
int r_edi;
int r_eip;
int r_eflags;
int r_cs;
int r_ss;
int r_ds;
int r_es;
int r_fs;
int r_gs;
};

struct fpreg32 {
char __data[108];
};

struct dbreg32 {
int dr[8];
};

struct xmmregs32 {
struct fxsave fxstate;
};
__CTASSERT(sizeof(struct xmmregs32) == 512);

struct x86_get_ldt_args32 {
int32_t start;
uint32_t desc;
int32_t num;
};

struct x86_set_ldt_args32 {
int32_t start;
uint32_t desc;
int32_t num;
};

struct mtrr32 {
uint64_t base;
uint64_t len;
uint8_t type;
uint8_t __pad0[3];
int flags;
uint32_t owner;
} __packed;

struct x86_64_get_mtrr_args32 {
uint32_t mtrrp;
uint32_t n;
};

struct x86_64_set_mtrr_args32 {
uint32_t mtrrp;
uint32_t n;
};

#define NETBSD32_MID_MACHINE MID_I386

/* 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_read_dbregs(struct lwp *, struct dbreg32 *, size_t *);

int netbsd32_process_write_regs(struct lwp *, const struct reg32 *);
int netbsd32_process_write_fpregs(struct lwp *, const struct fpreg32 *, size_t);
int netbsd32_process_write_dbregs(struct lwp *, const struct dbreg32 *, size_t);

#endif /* _MACHINE_NETBSD32_H_ */