[deliverable/binutils-gdb.git] / gdb / gdbserver / lynx-i386-low.c

/* Copyright (C) 2010-2017 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "server.h"
#include "lynx-low.h"
#include <limits.h>
#include <sys/ptrace.h>
#include "x86-xstate.h"
#include "arch/i386.h"

/* The following two typedefs are defined in a .h file which is not
   in the standard include path (/sys/include/family/x86/ucontext.h),
   so we just duplicate them here.  */

/* General register context */
typedef struct usr_econtext {

    uint32_t    uec_fault;
    uint32_t    uec_es;
    uint32_t    uec_ds;
    uint32_t    uec_edi;
    uint32_t    uec_esi;
    uint32_t    uec_ebp;
    uint32_t    uec_temp;
    uint32_t    uec_ebx;
    uint32_t    uec_edx;
    uint32_t    uec_ecx;
    uint32_t    uec_eax;
    uint32_t    uec_inum;
    uint32_t    uec_ecode;
    uint32_t    uec_eip;
    uint32_t    uec_cs;
    uint32_t    uec_eflags;
    uint32_t    uec_esp;
    uint32_t    uec_ss;
    uint32_t    uec_fs;
    uint32_t    uec_gs;
} usr_econtext_t;

/* Floating point and SIMD register context */
typedef struct usr_fcontext {
        uint16_t         ufc_control;
        uint16_t         ufc_status;
        uint16_t         ufc_tag;
        uint16_t         ufc_opcode;
        uint8_t         *ufc_inst_off;
        uint32_t         ufc_inst_sel;
        uint8_t         *ufc_data_off;
        uint32_t         ufc_data_sel;
        uint32_t         usse_mxcsr;
        uint32_t         usse_mxcsr_mask;
        struct ufp387_real {
                uint16_t umant4;
                uint16_t umant3;
                uint16_t umant2;
                uint16_t umant1;
                uint16_t us_and_e;
                uint16_t ureserved_1;
                uint16_t ureserved_2;
                uint16_t ureserved_3;
        } ufc_reg[8];
        struct uxmm_register {
                uint16_t uchunk_1;
                uint16_t uchunk_2;
                uint16_t uchunk_3;
                uint16_t uchunk_4;
                uint16_t uchunk_5;
                uint16_t uchunk_6;
                uint16_t uchunk_7;
                uint16_t uchunk_8;
        } uxmm_reg[8];
        char ureserved[16][14];
} usr_fcontext_t;

/* The index of various registers inside the regcache.  */

enum lynx_i386_gdb_regnum
{
  I386_EAX_REGNUM,
  I386_ECX_REGNUM,
  I386_EDX_REGNUM,
  I386_EBX_REGNUM,
  I386_ESP_REGNUM,
  I386_EBP_REGNUM,
  I386_ESI_REGNUM,
  I386_EDI_REGNUM,
  I386_EIP_REGNUM,
  I386_EFLAGS_REGNUM,
  I386_CS_REGNUM,
  I386_SS_REGNUM,
  I386_DS_REGNUM,
  I386_ES_REGNUM,
  I386_FS_REGNUM,
  I386_GS_REGNUM,
  I386_ST0_REGNUM,
  I386_FCTRL_REGNUM = I386_ST0_REGNUM + 8,
  I386_FSTAT_REGNUM,
  I386_FTAG_REGNUM,
  I386_FISEG_REGNUM,
  I386_FIOFF_REGNUM,
  I386_FOSEG_REGNUM,
  I386_FOOFF_REGNUM,
  I386_FOP_REGNUM,
  I386_XMM0_REGNUM = 32,
  I386_MXCSR_REGNUM = I386_XMM0_REGNUM + 8,
  I386_SENTINEL_REGUM
};

/* The fill_function for the general-purpose register set.  */

static void
lynx_i386_fill_gregset (struct regcache *regcache, char *buf)
{
#define lynx_i386_collect_gp(regnum, fld) \
  collect_register (regcache, regnum, \
                    buf + offsetof (usr_econtext_t, uec_##fld))

  lynx_i386_collect_gp (I386_EAX_REGNUM, eax);
  lynx_i386_collect_gp (I386_ECX_REGNUM, ecx);
  lynx_i386_collect_gp (I386_EDX_REGNUM, edx);
  lynx_i386_collect_gp (I386_EBX_REGNUM, ebx);
  lynx_i386_collect_gp (I386_ESP_REGNUM, esp);
  lynx_i386_collect_gp (I386_EBP_REGNUM, ebp);
  lynx_i386_collect_gp (I386_ESI_REGNUM, esi);
  lynx_i386_collect_gp (I386_EDI_REGNUM, edi);
  lynx_i386_collect_gp (I386_EIP_REGNUM, eip);
  lynx_i386_collect_gp (I386_EFLAGS_REGNUM, eflags);
  lynx_i386_collect_gp (I386_CS_REGNUM, cs);
  lynx_i386_collect_gp (I386_SS_REGNUM, ss);
  lynx_i386_collect_gp (I386_DS_REGNUM, ds);
  lynx_i386_collect_gp (I386_ES_REGNUM, es);
  lynx_i386_collect_gp (I386_FS_REGNUM, fs);
  lynx_i386_collect_gp (I386_GS_REGNUM, gs);
}

/* The store_function for the general-purpose register set.  */

static void
lynx_i386_store_gregset (struct regcache *regcache, const char *buf)
{
#define lynx_i386_supply_gp(regnum, fld) \
  supply_register (regcache, regnum, \
                   buf + offsetof (usr_econtext_t, uec_##fld))

  lynx_i386_supply_gp (I386_EAX_REGNUM, eax);
  lynx_i386_supply_gp (I386_ECX_REGNUM, ecx);
  lynx_i386_supply_gp (I386_EDX_REGNUM, edx);
  lynx_i386_supply_gp (I386_EBX_REGNUM, ebx);
  lynx_i386_supply_gp (I386_ESP_REGNUM, esp);
  lynx_i386_supply_gp (I386_EBP_REGNUM, ebp);
  lynx_i386_supply_gp (I386_ESI_REGNUM, esi);
  lynx_i386_supply_gp (I386_EDI_REGNUM, edi);
  lynx_i386_supply_gp (I386_EIP_REGNUM, eip);
  lynx_i386_supply_gp (I386_EFLAGS_REGNUM, eflags);
  lynx_i386_supply_gp (I386_CS_REGNUM, cs);
  lynx_i386_supply_gp (I386_SS_REGNUM, ss);
  lynx_i386_supply_gp (I386_DS_REGNUM, ds);
  lynx_i386_supply_gp (I386_ES_REGNUM, es);
  lynx_i386_supply_gp (I386_FS_REGNUM, fs);
  lynx_i386_supply_gp (I386_GS_REGNUM, gs);
}

/* Extract the first 16 bits of register REGNUM in the REGCACHE,
   and store these 2 bytes at DEST.

   This is useful to collect certain 16bit registers which are known
   by GDBserver as 32bit registers (such as the Control Register
   for instance).  */

static void
collect_16bit_register (struct regcache *regcache, int regnum, char *dest)
{
  gdb_byte word[4];

  collect_register (regcache, regnum, word);
  memcpy (dest, word, 2);
}

/* The fill_function for the floating-point register set.  */

static void
lynx_i386_fill_fpregset (struct regcache *regcache, char *buf)
{
  int i;

  /* Collect %st0 .. %st7.  */
  for (i = 0; i < 8; i++)
    collect_register (regcache, I386_ST0_REGNUM + i,
                      buf + offsetof (usr_fcontext_t, ufc_reg)
		      + i * sizeof (struct ufp387_real));

  /* Collect the other FPU registers.  */
  collect_16bit_register (regcache, I386_FCTRL_REGNUM,
                          buf + offsetof (usr_fcontext_t, ufc_control));
  collect_16bit_register (regcache, I386_FSTAT_REGNUM,
                          buf + offsetof (usr_fcontext_t, ufc_status));
  collect_16bit_register (regcache, I386_FTAG_REGNUM,
                          buf + offsetof (usr_fcontext_t, ufc_tag));
  collect_register (regcache, I386_FISEG_REGNUM,
                    buf + offsetof (usr_fcontext_t, ufc_inst_sel));
  collect_register (regcache, I386_FIOFF_REGNUM,
                    buf + offsetof (usr_fcontext_t, ufc_inst_off));
  collect_register (regcache, I386_FOSEG_REGNUM,
                    buf + offsetof (usr_fcontext_t, ufc_data_sel));
  collect_register (regcache, I386_FOOFF_REGNUM,
                    buf + offsetof (usr_fcontext_t, ufc_data_off));
  collect_16bit_register (regcache, I386_FOP_REGNUM,
                          buf + offsetof (usr_fcontext_t, ufc_opcode));

  /* Collect the XMM registers.  */
  for (i = 0; i < 8; i++)
    collect_register (regcache, I386_XMM0_REGNUM + i,
                      buf + offsetof (usr_fcontext_t, uxmm_reg)
		      + i * sizeof (struct uxmm_register));
  collect_register (regcache, I386_MXCSR_REGNUM,
                    buf + offsetof (usr_fcontext_t, usse_mxcsr));
}

/* This is the supply counterpart for collect_16bit_register:
   It extracts a 2byte value from BUF, and uses that value to
   set REGNUM's value in the regcache.

   This is useful to supply the value of certain 16bit registers
   which are known by GDBserver as 32bit registers (such as the Control
   Register for instance).  */

static void
supply_16bit_register (struct regcache *regcache, int regnum, const char *buf)
{
  gdb_byte word[4];

  memcpy (word, buf, 2);
  memset (word + 2, 0, 2);
  supply_register (regcache, regnum, word);
}

/* The store_function for the floating-point register set.  */

static void
lynx_i386_store_fpregset (struct regcache *regcache, const char *buf)
{
  int i;

  /* Store the %st0 .. %st7 registers.  */
  for (i = 0; i < 8; i++)
    supply_register (regcache, I386_ST0_REGNUM + i,
                     buf + offsetof (usr_fcontext_t, ufc_reg)
		     + i * sizeof (struct ufp387_real));

  /* Store the other FPU registers.  */
  supply_16bit_register (regcache, I386_FCTRL_REGNUM,
                         buf + offsetof (usr_fcontext_t, ufc_control));
  supply_16bit_register (regcache, I386_FSTAT_REGNUM,
                         buf + offsetof (usr_fcontext_t, ufc_status));
  supply_16bit_register (regcache, I386_FTAG_REGNUM,
                         buf + offsetof (usr_fcontext_t, ufc_tag));
  supply_register (regcache, I386_FISEG_REGNUM,
                   buf + offsetof (usr_fcontext_t, ufc_inst_sel));
  supply_register (regcache, I386_FIOFF_REGNUM,
                   buf + offsetof (usr_fcontext_t, ufc_inst_off));
  supply_register (regcache, I386_FOSEG_REGNUM,
                   buf + offsetof (usr_fcontext_t, ufc_data_sel));
  supply_register (regcache, I386_FOOFF_REGNUM,
                   buf + offsetof (usr_fcontext_t, ufc_data_off));
  supply_16bit_register (regcache, I386_FOP_REGNUM,
                         buf + offsetof (usr_fcontext_t, ufc_opcode));

  /* Store the XMM registers.  */
  for (i = 0; i < 8; i++)
    supply_register (regcache, I386_XMM0_REGNUM + i,
                     buf + offsetof (usr_fcontext_t, uxmm_reg)
		     + i * sizeof (struct uxmm_register));
  supply_register (regcache, I386_MXCSR_REGNUM,
                   buf + offsetof (usr_fcontext_t, usse_mxcsr));
}

/* Implements the lynx_target_ops.arch_setup routine.  */

static void
lynx_i386_arch_setup (void)
{
  lynx_tdesc = i386_create_target_description (X86_XSTATE_SSE_MASK, false);
}

/* Description of all the x86-lynx register sets.  */

struct lynx_regset_info lynx_target_regsets[] = {
  /* General Purpose Registers.  */
  {PTRACE_GETREGS, PTRACE_SETREGS, sizeof(usr_econtext_t),
   lynx_i386_fill_gregset, lynx_i386_store_gregset},
  /* Floating Point Registers.  */
  { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof(usr_fcontext_t),
    lynx_i386_fill_fpregset, lynx_i386_store_fpregset },
  /* End of list marker.  */
  {0, 0, -1, NULL, NULL }
};

/* The lynx_target_ops vector for x86-lynx.  */

struct lynx_target_ops the_low_target = {
  lynx_i386_arch_setup,
};
Commit	Line	Data
61baf725	1	/* Copyright (C) 2010-2017 Free Software Foundation, Inc.
fa1bd1e4 JB	2
	3	This file is part of GDB.
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	17
	18	#include "server.h"
	19	#include "lynx-low.h"
fa1bd1e4 JB	20	#include <limits.h>
fa1bd1e4 JB	21	#include <sys/ptrace.h>
22916b07 YQ	22	#include "x86-xstate.h"
22916b07 YQ	23	#include "arch/i386.h"
fa1bd1e4 JB	24
	25	/* The following two typedefs are defined in a .h file which is not
	26	in the standard include path (/sys/include/family/x86/ucontext.h),
	27	so we just duplicate them here. */
	28
	29	/* General register context */
	30	typedef struct usr_econtext {
	31
	32	uint32_t uec_fault;
	33	uint32_t uec_es;
	34	uint32_t uec_ds;
	35	uint32_t uec_edi;
	36	uint32_t uec_esi;
	37	uint32_t uec_ebp;
	38	uint32_t uec_temp;
	39	uint32_t uec_ebx;
	40	uint32_t uec_edx;
	41	uint32_t uec_ecx;
	42	uint32_t uec_eax;
	43	uint32_t uec_inum;
	44	uint32_t uec_ecode;
	45	uint32_t uec_eip;
	46	uint32_t uec_cs;
	47	uint32_t uec_eflags;
	48	uint32_t uec_esp;
	49	uint32_t uec_ss;
	50	uint32_t uec_fs;
	51	uint32_t uec_gs;
	52	} usr_econtext_t;
	53
	54	/* Floating point and SIMD register context */
	55	typedef struct usr_fcontext {
	56	uint16_t ufc_control;
	57	uint16_t ufc_status;
	58	uint16_t ufc_tag;
	59	uint16_t ufc_opcode;
	60	uint8_t *ufc_inst_off;
	61	uint32_t ufc_inst_sel;
	62	uint8_t *ufc_data_off;
	63	uint32_t ufc_data_sel;
	64	uint32_t usse_mxcsr;
	65	uint32_t usse_mxcsr_mask;
	66	struct ufp387_real {
	67	uint16_t umant4;
	68	uint16_t umant3;
	69	uint16_t umant2;
	70	uint16_t umant1;
	71	uint16_t us_and_e;
	72	uint16_t ureserved_1;
	73	uint16_t ureserved_2;
	74	uint16_t ureserved_3;
	75	} ufc_reg[8];
	76	struct uxmm_register {
	77	uint16_t uchunk_1;
	78	uint16_t uchunk_2;
	79	uint16_t uchunk_3;
	80	uint16_t uchunk_4;
	81	uint16_t uchunk_5;
	82	uint16_t uchunk_6;
	83	uint16_t uchunk_7;
	84	uint16_t uchunk_8;
	85	} uxmm_reg[8];
	86	char ureserved[16][14];
	87	} usr_fcontext_t;
88
89	/* The index of various registers inside the regcache. */
90
91	enum lynx_i386_gdb_regnum
92	{
93	I386_EAX_REGNUM,
94	I386_ECX_REGNUM,
95	I386_EDX_REGNUM,
96	I386_EBX_REGNUM,
97	I386_ESP_REGNUM,
98	I386_EBP_REGNUM,
99	I386_ESI_REGNUM,
100	I386_EDI_REGNUM,
101	I386_EIP_REGNUM,
102	I386_EFLAGS_REGNUM,
103	I386_CS_REGNUM,
104	I386_SS_REGNUM,
105	I386_DS_REGNUM,
106	I386_ES_REGNUM,
107	I386_FS_REGNUM,
108	I386_GS_REGNUM,
109	I386_ST0_REGNUM,
110	I386_FCTRL_REGNUM = I386_ST0_REGNUM + 8,
111	I386_FSTAT_REGNUM,
112	I386_FTAG_REGNUM,
113	I386_FISEG_REGNUM,
114	I386_FIOFF_REGNUM,
115	I386_FOSEG_REGNUM,
116	I386_FOOFF_REGNUM,
117	I386_FOP_REGNUM,
118	I386_XMM0_REGNUM = 32,
119	I386_MXCSR_REGNUM = I386_XMM0_REGNUM + 8,
120	I386_SENTINEL_REGUM
121	};
122
fa1bd1e4 JB	123	/* The fill_function for the general-purpose register set. */
	124
	125	static void
	126	lynx_i386_fill_gregset (struct regcache regcache, char buf)
	127	{
	128	#define lynx_i386_collect_gp(regnum, fld) \
	129	collect_register (regcache, regnum, \
	130	buf + offsetof (usr_econtext_t, uec_##fld))
	131
	132	lynx_i386_collect_gp (I386_EAX_REGNUM, eax);
	133	lynx_i386_collect_gp (I386_ECX_REGNUM, ecx);
	134	lynx_i386_collect_gp (I386_EDX_REGNUM, edx);
	135	lynx_i386_collect_gp (I386_EBX_REGNUM, ebx);
	136	lynx_i386_collect_gp (I386_ESP_REGNUM, esp);
	137	lynx_i386_collect_gp (I386_EBP_REGNUM, ebp);
	138	lynx_i386_collect_gp (I386_ESI_REGNUM, esi);
	139	lynx_i386_collect_gp (I386_EDI_REGNUM, edi);
	140	lynx_i386_collect_gp (I386_EIP_REGNUM, eip);
	141	lynx_i386_collect_gp (I386_EFLAGS_REGNUM, eflags);
	142	lynx_i386_collect_gp (I386_CS_REGNUM, cs);
	143	lynx_i386_collect_gp (I386_SS_REGNUM, ss);
	144	lynx_i386_collect_gp (I386_DS_REGNUM, ds);
	145	lynx_i386_collect_gp (I386_ES_REGNUM, es);
	146	lynx_i386_collect_gp (I386_FS_REGNUM, fs);
	147	lynx_i386_collect_gp (I386_GS_REGNUM, gs);
	148	}
	149
	150	/* The store_function for the general-purpose register set. */
	151
	152	static void
	153	lynx_i386_store_gregset (struct regcache regcache, const char buf)
	154	{
	155	#define lynx_i386_supply_gp(regnum, fld) \
	156	supply_register (regcache, regnum, \
	157	buf + offsetof (usr_econtext_t, uec_##fld))
	158
	159	lynx_i386_supply_gp (I386_EAX_REGNUM, eax);
	160	lynx_i386_supply_gp (I386_ECX_REGNUM, ecx);
	161	lynx_i386_supply_gp (I386_EDX_REGNUM, edx);
	162	lynx_i386_supply_gp (I386_EBX_REGNUM, ebx);
	163	lynx_i386_supply_gp (I386_ESP_REGNUM, esp);
	164	lynx_i386_supply_gp (I386_EBP_REGNUM, ebp);
	165	lynx_i386_supply_gp (I386_ESI_REGNUM, esi);
	166	lynx_i386_supply_gp (I386_EDI_REGNUM, edi);
	167	lynx_i386_supply_gp (I386_EIP_REGNUM, eip);
	168	lynx_i386_supply_gp (I386_EFLAGS_REGNUM, eflags);
	169	lynx_i386_supply_gp (I386_CS_REGNUM, cs);
	170	lynx_i386_supply_gp (I386_SS_REGNUM, ss);
	171	lynx_i386_supply_gp (I386_DS_REGNUM, ds);
	172	lynx_i386_supply_gp (I386_ES_REGNUM, es);
	173	lynx_i386_supply_gp (I386_FS_REGNUM, fs);
	174	lynx_i386_supply_gp (I386_GS_REGNUM, gs);
	175	}
	176
	177	/* Extract the first 16 bits of register REGNUM in the REGCACHE,
	178	and store these 2 bytes at DEST.
	179
	180	This is useful to collect certain 16bit registers which are known
	181	by GDBserver as 32bit registers (such as the Control Register
	182	for instance). */
	183
	184	static void
	185	collect_16bit_register (struct regcache regcache, int regnum, char dest)
	186	{
187	gdb_byte word[4];
188
189	collect_register (regcache, regnum, word);
190	memcpy (dest, word, 2);
191	}
192
193	/* The fill_function for the floating-point register set. */
194
195	static void
196	lynx_i386_fill_fpregset (struct regcache regcache, char buf)
197	{
198	int i;
199
200	/* Collect %st0 .. %st7. */
201	for (i = 0; i < 8; i++)
202	collect_register (regcache, I386_ST0_REGNUM + i,
203	buf + offsetof (usr_fcontext_t, ufc_reg)
204	+ i * sizeof (struct ufp387_real));
205
206	/* Collect the other FPU registers. */
207	collect_16bit_register (regcache, I386_FCTRL_REGNUM,
208	buf + offsetof (usr_fcontext_t, ufc_control));
209	collect_16bit_register (regcache, I386_FSTAT_REGNUM,
210	buf + offsetof (usr_fcontext_t, ufc_status));
211	collect_16bit_register (regcache, I386_FTAG_REGNUM,
212	buf + offsetof (usr_fcontext_t, ufc_tag));
213	collect_register (regcache, I386_FISEG_REGNUM,
214	buf + offsetof (usr_fcontext_t, ufc_inst_sel));
215	collect_register (regcache, I386_FIOFF_REGNUM,
216	buf + offsetof (usr_fcontext_t, ufc_inst_off));
217	collect_register (regcache, I386_FOSEG_REGNUM,
218	buf + offsetof (usr_fcontext_t, ufc_data_sel));
219	collect_register (regcache, I386_FOOFF_REGNUM,
220	buf + offsetof (usr_fcontext_t, ufc_data_off));
221	collect_16bit_register (regcache, I386_FOP_REGNUM,
222	buf + offsetof (usr_fcontext_t, ufc_opcode));
223
224	/* Collect the XMM registers. */
225	for (i = 0; i < 8; i++)
226	collect_register (regcache, I386_XMM0_REGNUM + i,
227	buf + offsetof (usr_fcontext_t, uxmm_reg)
228	+ i * sizeof (struct uxmm_register));
229	collect_register (regcache, I386_MXCSR_REGNUM,
230	buf + offsetof (usr_fcontext_t, usse_mxcsr));
231	}
232
233	/* This is the supply counterpart for collect_16bit_register:
234	It extracts a 2byte value from BUF, and uses that value to
235	set REGNUM's value in the regcache.
236
237	This is useful to supply the value of certain 16bit registers
238	which are known by GDBserver as 32bit registers (such as the Control
239	Register for instance). */
240
241	static void
242	supply_16bit_register (struct regcache regcache, int regnum, const char buf)
243	{
244	gdb_byte word[4];
245
246	memcpy (word, buf, 2);
247	memset (word + 2, 0, 2);
248	supply_register (regcache, regnum, word);
249	}
250
251	/* The store_function for the floating-point register set. */
252
253	static void
254	lynx_i386_store_fpregset (struct regcache regcache, const char buf)
255	{
256	int i;
257
258	/* Store the %st0 .. %st7 registers. */
259	for (i = 0; i < 8; i++)
260	supply_register (regcache, I386_ST0_REGNUM + i,
261	buf + offsetof (usr_fcontext_t, ufc_reg)
262	+ i * sizeof (struct ufp387_real));
263
264	/* Store the other FPU registers. */
265	supply_16bit_register (regcache, I386_FCTRL_REGNUM,
266	buf + offsetof (usr_fcontext_t, ufc_control));
267	supply_16bit_register (regcache, I386_FSTAT_REGNUM,
268	buf + offsetof (usr_fcontext_t, ufc_status));
269	supply_16bit_register (regcache, I386_FTAG_REGNUM,
270	buf + offsetof (usr_fcontext_t, ufc_tag));
271	supply_register (regcache, I386_FISEG_REGNUM,
272	buf + offsetof (usr_fcontext_t, ufc_inst_sel));
273	supply_register (regcache, I386_FIOFF_REGNUM,
274	buf + offsetof (usr_fcontext_t, ufc_inst_off));
275	supply_register (regcache, I386_FOSEG_REGNUM,
276	buf + offsetof (usr_fcontext_t, ufc_data_sel));
277	supply_register (regcache, I386_FOOFF_REGNUM,
278	buf + offsetof (usr_fcontext_t, ufc_data_off));
279	supply_16bit_register (regcache, I386_FOP_REGNUM,
280	buf + offsetof (usr_fcontext_t, ufc_opcode));
281
282	/* Store the XMM registers. */
283	for (i = 0; i < 8; i++)
284	supply_register (regcache, I386_XMM0_REGNUM + i,
285	buf + offsetof (usr_fcontext_t, uxmm_reg)
286	+ i * sizeof (struct uxmm_register));
287	supply_register (regcache, I386_MXCSR_REGNUM,
288	buf + offsetof (usr_fcontext_t, usse_mxcsr));
289	}
290
291	/* Implements the lynx_target_ops.arch_setup routine. */
292
293	static void
294	lynx_i386_arch_setup (void)
295	{
22916b07	296	lynx_tdesc = i386_create_target_description (X86_XSTATE_SSE_MASK, false);
fa1bd1e4 JB	297	}
	298
	299	/* Description of all the x86-lynx register sets. */
	300
	301	struct lynx_regset_info lynx_target_regsets[] = {
	302	/* General Purpose Registers. */
	303	{PTRACE_GETREGS, PTRACE_SETREGS, sizeof(usr_econtext_t),
	304	lynx_i386_fill_gregset, lynx_i386_store_gregset},
	305	/* Floating Point Registers. */
	306	{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof(usr_fcontext_t),
	307	lynx_i386_fill_fpregset, lynx_i386_store_fpregset },
	308	/* End of list marker. */
	309	{0, 0, -1, NULL, NULL }
	310	};
	311
	312	/* The lynx_target_ops vector for x86-lynx. */
	313
	314	struct lynx_target_ops the_low_target = {
	315	lynx_i386_arch_setup,
	316	};