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/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)reg.h 5.5 (Berkeley) 1/18/91
* $FreeBSD$
*/
#ifndef _MACHINE_REG_H_
#define _MACHINE_REG_H_
/*
* Indices for registers in `struct trapframe' and `struct regs'.
*
* This interface is deprecated. In the kernel, it is only used in FPU
* emulators to convert from register numbers encoded in instructions to
* register values. Everything else just accesses the relevant struct
* members. In userland, debuggers tend to abuse this interface since
* they don't understand that `struct regs' is a struct. I hope they have
* stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U
* and we can stop supporting the user area soon.
*/
#define tFS (0)
#define tES (1)
#define tDS (2)
#define tEDI (3)
#define tESI (4)
#define tEBP (5)
#define tISP (6)
#define tEBX (7)
#define tEDX (8)
#define tECX (9)
#define tEAX (10)
#define tERR (12)
#define tEIP (13)
#define tCS (14)
#define tEFLAGS (15)
#define tESP (16)
#define tSS (17)
/*
* Indices for registers in `struct regs' only.
*
* Some registers live in the pcb and are only in an "array" with the
* other registers in application interfaces that copy all the registers
* to or from a `struct regs'.
*/
#define tGS (18)
/*
* Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
*/
struct reg {
unsigned int r_fs;
unsigned int r_es;
unsigned int r_ds;
unsigned int r_edi;
unsigned int r_esi;
unsigned int r_ebp;
unsigned int r_isp;
unsigned int r_ebx;
unsigned int r_edx;
unsigned int r_ecx;
unsigned int r_eax;
unsigned int r_trapno;
unsigned int r_err;
unsigned int r_eip;
unsigned int r_cs;
unsigned int r_eflags;
unsigned int r_esp;
unsigned int r_ss;
unsigned int r_gs;
};
/*
* Register set accessible via /proc/$pid/fpregs.
*/
struct fpreg {
/*
* XXX should get struct from npx.h. Here we give a slightly
* simplified struct. This may be too much detail. Perhaps
* an array of unsigned longs is best.
*/
unsigned long fpr_env[7];
unsigned char fpr_acc[8][10];
unsigned long fpr_ex_sw;
unsigned char fpr_pad[64];
};
/*
* Register set accessible via /proc/$pid/dbregs.
*/
struct dbreg {
unsigned int dr[8]; /* debug registers */
/* Index 0-3: debug address registers */
/* Index 4-5: reserved */
/* Index 6: debug status */
/* Index 7: debug control */
};
#define DBREG_DR7_EXEC 0x00 /* break on execute */
#define DBREG_DR7_WRONLY 0x01 /* break on write */
#define DBREG_DR7_RDWR 0x03 /* break on read or write */
#define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by
register number */
#ifdef _KERNEL
/*
* XXX these interfaces are MI, so they should be declared in a MI place.
*/
int fill_regs(struct thread *, struct reg *);
int set_regs(struct thread *, struct reg *);
int fill_fpregs(struct thread *, struct fpreg *);
int set_fpregs(struct thread *, struct fpreg *);
int fill_dbregs(struct thread *, struct dbreg *);
int set_dbregs(struct thread *, struct dbreg *);
#endif
#endif /* !_MACHINE_REG_H_ */
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