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freebsd-dev/sys/x86/include/reg.h
John Baldwin dbee5c671a Move the 32-bit compatible procfs types from freebsd32.h to <sys/procfs.h> 
and export them to userland.
- Define __HAVE_REG32 on platforms that define a reg32 structure and check
  for this in <sys/procfs.h> to control when to export prstatus32, etc.
- Add prstatus32_t and prpsinfo32_t typedefs for the 32-bit structures.
  libbfd looks for these types, and having them fixes 'gcore' in gdb of a
  32-bit process on a 64-bit platform.
- Use the structure definitions from <sys/procfs.h> in gcore's elf32 core
  dump code instead of duplicating the definitions.

Differential Revision:	https://reviews.freebsd.org/D2142
Reviewed by:	kib, nathanw (powerpc bits)
MFC after:	1 week
2015-04-08 16:30:45 +00:00

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/*-
* Copyright (c) 2003 Peter Wemm.
* 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_
#include <machine/_types.h>
#ifdef __i386__
/*
* 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)
#endif /* __i386__ */
/* Rename the structs below depending on the machine architecture. */
#ifdef __i386__
#define __reg32 reg
#define __fpreg32 fpreg
#define __dbreg32 dbreg
#else
#define __reg32 reg32
#define __reg64 reg
#define __fpreg32 fpreg32
#define __fpreg64 fpreg
#define __dbreg32 dbreg32
#define __dbreg64 dbreg
#define __HAVE_REG32
#endif
/*
* Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
*/
struct __reg32 {
__uint32_t r_fs;
__uint32_t r_es;
__uint32_t r_ds;
__uint32_t r_edi;
__uint32_t r_esi;
__uint32_t r_ebp;
__uint32_t r_isp;
__uint32_t r_ebx;
__uint32_t r_edx;
__uint32_t r_ecx;
__uint32_t r_eax;
__uint32_t r_trapno;
__uint32_t r_err;
__uint32_t r_eip;
__uint32_t r_cs;
__uint32_t r_eflags;
__uint32_t r_esp;
__uint32_t r_ss;
__uint32_t r_gs;
};
struct __reg64 {
__int64_t r_r15;
__int64_t r_r14;
__int64_t r_r13;
__int64_t r_r12;
__int64_t r_r11;
__int64_t r_r10;
__int64_t r_r9;
__int64_t r_r8;
__int64_t r_rdi;
__int64_t r_rsi;
__int64_t r_rbp;
__int64_t r_rbx;
__int64_t r_rdx;
__int64_t r_rcx;
__int64_t r_rax;
__uint32_t r_trapno;
__uint16_t r_fs;
__uint16_t r_gs;
__uint32_t r_err;
__uint16_t r_es;
__uint16_t r_ds;
__int64_t r_rip;
__int64_t r_cs;
__int64_t r_rflags;
__int64_t r_rsp;
__int64_t r_ss;
};
/*
* Register set accessible via /proc/$pid/fpregs.
*
* XXX should get struct from fpu.h. Here we give a slightly
* simplified struct. This may be too much detail. Perhaps
* an array of unsigned longs is best.
*/
struct __fpreg32 {
__uint32_t fpr_env[7];
__uint8_t fpr_acc[8][10];
__uint32_t fpr_ex_sw;
__uint8_t fpr_pad[64];
};
struct __fpreg64 {
__uint64_t fpr_env[4];
__uint8_t fpr_acc[8][16];
__uint8_t fpr_xacc[16][16];
__uint64_t fpr_spare[12];
};
/*
* Register set accessible via PT_GETXMMREGS (i386).
*/
struct xmmreg {
/*
* 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.
*/
__uint32_t xmm_env[8];
__uint8_t xmm_acc[8][16];
__uint8_t xmm_reg[8][16];
__uint8_t xmm_pad[224];
};
/*
* Register set accessible via /proc/$pid/dbregs.
*/
struct __dbreg32 {
__uint32_t dr[8]; /* debug registers */
/* Index 0-3: debug address registers */
/* Index 4-5: reserved */
/* Index 6: debug status */
/* Index 7: debug control */
};
struct __dbreg64 {
__uint64_t dr[16]; /* debug registers */
/* Index 0-3: debug address registers */
/* Index 4-5: reserved */
/* Index 6: debug status */
/* Index 7: debug control */
/* Index 8-15: reserved */
};
#define DBREG_DR7_LOCAL_ENABLE 0x01
#define DBREG_DR7_GLOBAL_ENABLE 0x02
#define DBREG_DR7_LEN_1 0x00 /* 1 byte length */
#define DBREG_DR7_LEN_2 0x01
#define DBREG_DR7_LEN_4 0x03
#define DBREG_DR7_LEN_8 0x02
#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_DR7_MASK(i) \
((__u_register_t)(0xf) << ((i) * 4 + 16) | 0x3 << (i) * 2)
#define DBREG_DR7_SET(i, len, access, enable) \
((__u_register_t)((len) << 2 | (access)) << ((i) * 4 + 16) | \
(enable) << (i) * 2)
#define DBREG_DR7_GD 0x2000
#define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0)
#define DBREG_DR7_ACCESS(d, i) ((d) >> ((i) * 4 + 16) & 0x3)
#define DBREG_DR7_LEN(d, i) ((d) >> ((i) * 4 + 18) & 0x3)
#define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by
register number */
#undef __reg32
#undef __reg64
#undef __fpreg32
#undef __fpreg64
#undef __dbreg32
#undef __dbreg64
#ifdef _KERNEL
/*
* XXX these interfaces are MI, so they should be declared in a MI place.
*/
int fill_regs(struct thread *, struct reg *);
int fill_frame_regs(struct trapframe *, 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 *);
#ifdef COMPAT_FREEBSD32
int fill_regs32(struct thread *, struct reg32 *);
int set_regs32(struct thread *, struct reg32 *);
int fill_fpregs32(struct thread *, struct fpreg32 *);
int set_fpregs32(struct thread *, struct fpreg32 *);
int fill_dbregs32(struct thread *, struct dbreg32 *);
int set_dbregs32(struct thread *, struct dbreg32 *);
#endif
#endif
#endif /* !_MACHINE_REG_H_ */
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