[qemu.git] / target / s390x / gdbstub.c

/*
 * s390x gdb server stub
 *
 * Copyright (c) 2003-2005 Fabrice Bellard
 * Copyright (c) 2013 SUSE LINUX Products GmbH
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#include "qemu/osdep.h"
#include "cpu.h"
#include "s390x-internal.h"
#include "exec/exec-all.h"
#include "exec/gdbstub.h"
#include "qemu/bitops.h"
#include "sysemu/hw_accel.h"
#include "sysemu/tcg.h"

int s390_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
{
    S390CPU *cpu = S390_CPU(cs);
    CPUS390XState *env = &cpu->env;

    switch (n) {
    case S390_PSWM_REGNUM:
        return gdb_get_regl(mem_buf, s390_cpu_get_psw_mask(env));
    case S390_PSWA_REGNUM:
        return gdb_get_regl(mem_buf, env->psw.addr);
    case S390_R0_REGNUM ... S390_R15_REGNUM:
        return gdb_get_regl(mem_buf, env->regs[n - S390_R0_REGNUM]);
    }
    return 0;
}

int s390_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
{
    S390CPU *cpu = S390_CPU(cs);
    CPUS390XState *env = &cpu->env;
    target_ulong tmpl = ldtul_p(mem_buf);

    switch (n) {
    case S390_PSWM_REGNUM:
        s390_cpu_set_psw(env, tmpl, env->psw.addr);
        break;
    case S390_PSWA_REGNUM:
        env->psw.addr = tmpl;
        break;
    case S390_R0_REGNUM ... S390_R15_REGNUM:
        env->regs[n - S390_R0_REGNUM] = tmpl;
        break;
    default:
        return 0;
    }
    return 8;
}

/* the values represent the positions in s390-acr.xml */
#define S390_A0_REGNUM 0
#define S390_A15_REGNUM 15
/* total number of registers in s390-acr.xml */
#define S390_NUM_AC_REGS 16

static int cpu_read_ac_reg(CPUS390XState *env, GByteArray *buf, int n)
{
    switch (n) {
    case S390_A0_REGNUM ... S390_A15_REGNUM:
        return gdb_get_reg32(buf, env->aregs[n]);
    default:
        return 0;
    }
}

static int cpu_write_ac_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
{
    switch (n) {
    case S390_A0_REGNUM ... S390_A15_REGNUM:
        env->aregs[n] = ldl_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 4;
    default:
        return 0;
    }
}

/* the values represent the positions in s390-fpr.xml */
#define S390_FPC_REGNUM 0
#define S390_F0_REGNUM 1
#define S390_F15_REGNUM 16
/* total number of registers in s390-fpr.xml */
#define S390_NUM_FP_REGS 17

static int cpu_read_fp_reg(CPUS390XState *env, GByteArray *buf, int n)
{
    switch (n) {
    case S390_FPC_REGNUM:
        return gdb_get_reg32(buf, env->fpc);
    case S390_F0_REGNUM ... S390_F15_REGNUM:
        return gdb_get_reg64(buf, *get_freg(env, n - S390_F0_REGNUM));
    default:
        return 0;
    }
}

static int cpu_write_fp_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
{
    switch (n) {
    case S390_FPC_REGNUM:
        env->fpc = ldl_p(mem_buf);
        return 4;
    case S390_F0_REGNUM ... S390_F15_REGNUM:
        *get_freg(env, n - S390_F0_REGNUM) = ldtul_p(mem_buf);
        return 8;
    default:
        return 0;
    }
}

/* the values represent the positions in s390-vx.xml */
#define S390_V0L_REGNUM 0
#define S390_V15L_REGNUM 15
#define S390_V16_REGNUM 16
#define S390_V31_REGNUM 31
/* total number of registers in s390-vx.xml */
#define S390_NUM_VREGS 32

static int cpu_read_vreg(CPUS390XState *env, GByteArray *buf, int n)
{
    int ret;

    switch (n) {
    case S390_V0L_REGNUM ... S390_V15L_REGNUM:
        ret = gdb_get_reg64(buf, env->vregs[n][1]);
        break;
    case S390_V16_REGNUM ... S390_V31_REGNUM:
        ret = gdb_get_reg64(buf, env->vregs[n][0]);
        ret += gdb_get_reg64(buf, env->vregs[n][1]);
        break;
    default:
        ret = 0;
    }

    return ret;
}

static int cpu_write_vreg(CPUS390XState *env, uint8_t *mem_buf, int n)
{
    switch (n) {
    case S390_V0L_REGNUM ... S390_V15L_REGNUM:
        env->vregs[n][1] = ldtul_p(mem_buf + 8);
        return 8;
    case S390_V16_REGNUM ... S390_V31_REGNUM:
        env->vregs[n][0] = ldtul_p(mem_buf);
        env->vregs[n][1] = ldtul_p(mem_buf + 8);
        return 16;
    default:
        return 0;
    }
}

/* the values represent the positions in s390-cr.xml */
#define S390_C0_REGNUM 0
#define S390_C15_REGNUM 15
/* total number of registers in s390-cr.xml */
#define S390_NUM_C_REGS 16

#ifndef CONFIG_USER_ONLY
static int cpu_read_c_reg(CPUS390XState *env, GByteArray *buf, int n)
{
    switch (n) {
    case S390_C0_REGNUM ... S390_C15_REGNUM:
        return gdb_get_regl(buf, env->cregs[n]);
    default:
        return 0;
    }
}

static int cpu_write_c_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
{
    switch (n) {
    case S390_C0_REGNUM ... S390_C15_REGNUM:
        env->cregs[n] = ldtul_p(mem_buf);
        if (tcg_enabled()) {
            tlb_flush(env_cpu(env));
        }
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    default:
        return 0;
    }
}

/* the values represent the positions in s390-virt.xml */
#define S390_VIRT_CKC_REGNUM    0
#define S390_VIRT_CPUTM_REGNUM  1
#define S390_VIRT_BEA_REGNUM    2
#define S390_VIRT_PREFIX_REGNUM 3
#define S390_VIRT_PP_REGNUM     4
#define S390_VIRT_PFT_REGNUM    5
#define S390_VIRT_PFS_REGNUM    6
#define S390_VIRT_PFC_REGNUM    7
/* total number of registers in s390-virt.xml */
#define S390_NUM_VIRT_REGS 8

static int cpu_read_virt_reg(CPUS390XState *env, GByteArray *mem_buf, int n)
{
    switch (n) {
    case S390_VIRT_CKC_REGNUM:
        return gdb_get_regl(mem_buf, env->ckc);
    case S390_VIRT_CPUTM_REGNUM:
        return gdb_get_regl(mem_buf, env->cputm);
    case S390_VIRT_BEA_REGNUM:
        return gdb_get_regl(mem_buf, env->gbea);
    case S390_VIRT_PREFIX_REGNUM:
        return gdb_get_regl(mem_buf, env->psa);
    case S390_VIRT_PP_REGNUM:
        return gdb_get_regl(mem_buf, env->pp);
    case S390_VIRT_PFT_REGNUM:
        return gdb_get_regl(mem_buf, env->pfault_token);
    case S390_VIRT_PFS_REGNUM:
        return gdb_get_regl(mem_buf, env->pfault_select);
    case S390_VIRT_PFC_REGNUM:
        return gdb_get_regl(mem_buf, env->pfault_compare);
    default:
        return 0;
    }
}

static int cpu_write_virt_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
{
    switch (n) {
    case S390_VIRT_CKC_REGNUM:
        env->ckc = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    case S390_VIRT_CPUTM_REGNUM:
        env->cputm = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    case S390_VIRT_BEA_REGNUM:
        env->gbea = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    case S390_VIRT_PREFIX_REGNUM:
        env->psa = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    case S390_VIRT_PP_REGNUM:
        env->pp = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    case S390_VIRT_PFT_REGNUM:
        env->pfault_token = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    case S390_VIRT_PFS_REGNUM:
        env->pfault_select = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    case S390_VIRT_PFC_REGNUM:
        env->pfault_compare = ldtul_p(mem_buf);
        cpu_synchronize_post_init(env_cpu(env));
        return 8;
    default:
        return 0;
    }
}
#endif

/* the values represent the positions in s390-gs.xml */
#define S390_GS_RESERVED_REGNUM 0
#define S390_GS_GSD_REGNUM      1
#define S390_GS_GSSM_REGNUM     2
#define S390_GS_GSEPLA_REGNUM   3
/* total number of registers in s390-gs.xml */
#define S390_NUM_GS_REGS 4

static int cpu_read_gs_reg(CPUS390XState *env, GByteArray *buf, int n)
{
    return gdb_get_regl(buf, env->gscb[n]);
}

static int cpu_write_gs_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
{
    env->gscb[n] = ldtul_p(mem_buf);
    cpu_synchronize_post_init(env_cpu(env));
    return 8;
}

void s390_cpu_gdb_init(CPUState *cs)
{
    gdb_register_coprocessor(cs, cpu_read_ac_reg,
                             cpu_write_ac_reg,
                             S390_NUM_AC_REGS, "s390-acr.xml", 0);

    gdb_register_coprocessor(cs, cpu_read_fp_reg,
                             cpu_write_fp_reg,
                             S390_NUM_FP_REGS, "s390-fpr.xml", 0);

    gdb_register_coprocessor(cs, cpu_read_vreg,
                             cpu_write_vreg,
                             S390_NUM_VREGS, "s390-vx.xml", 0);

    gdb_register_coprocessor(cs, cpu_read_gs_reg,
                             cpu_write_gs_reg,
                             S390_NUM_GS_REGS, "s390-gs.xml", 0);

#ifndef CONFIG_USER_ONLY
    gdb_register_coprocessor(cs, cpu_read_c_reg,
                             cpu_write_c_reg,
                             S390_NUM_C_REGS, "s390-cr.xml", 0);

    if (kvm_enabled()) {
        gdb_register_coprocessor(cs, cpu_read_virt_reg,
                                 cpu_write_virt_reg,
                                 S390_NUM_VIRT_REGS, "s390-virt.xml", 0);
    }
#endif
}
Commit	Line	Data
cfae5c90 AF	1	/*
	2	* s390x gdb server stub
	3	*
	4	* Copyright (c) 2003-2005 Fabrice Bellard
	5	* Copyright (c) 2013 SUSE LINUX Products GmbH
	6	*
	7	* This library is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU Lesser General Public
	9	* License as published by the Free Software Foundation; either
41c6a6dd	10	* version 2.1 of the License, or (at your option) any later version.
cfae5c90 AF	11	*
	12	* This library is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* Lesser General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU Lesser General Public
	18	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	19	*/
14a48c1d	20
9615495a	21	#include "qemu/osdep.h"
33c11879	22	#include "cpu.h"
b6b47223	23	#include "s390x-internal.h"
63c91552	24	#include "exec/exec-all.h"
5b50e790 AF	25	#include "exec/gdbstub.h"
5b50e790 AF	26	#include "qemu/bitops.h"
b3946626	27	#include "sysemu/hw_accel.h"
14a48c1d	28	#include "sysemu/tcg.h"
cfae5c90	29
a010bdbe	30	int s390_cpu_gdb_read_register(CPUState cs, GByteArray mem_buf, int n)
cfae5c90	31	{
5b50e790 AF	32	S390CPU *cpu = S390_CPU(cs);
5b50e790 AF	33	CPUS390XState *env = &cpu->env;
cfae5c90 AF	34
	35	switch (n) {
	36	case S390_PSWM_REGNUM:
deb60cc7	37	return gdb_get_regl(mem_buf, s390_cpu_get_psw_mask(env));
cfae5c90	38	case S390_PSWA_REGNUM:
986a2998	39	return gdb_get_regl(mem_buf, env->psw.addr);
cfae5c90	40	case S390_R0_REGNUM ... S390_R15_REGNUM:
218829db	41	return gdb_get_regl(mem_buf, env->regs[n - S390_R0_REGNUM]);
cfae5c90	42	}
cfae5c90 AF	43	return 0;
	44	}
	45
5b50e790	46	int s390_cpu_gdb_write_register(CPUState cs, uint8_t mem_buf, int n)
cfae5c90	47	{
5b50e790 AF	48	S390CPU *cpu = S390_CPU(cs);
5b50e790 AF	49	CPUS390XState *env = &cpu->env;
73d510c9	50	target_ulong tmpl = ldtul_p(mem_buf);
cfae5c90 AF	51
	52	switch (n) {
	53	case S390_PSWM_REGNUM:
deb60cc7	54	s390_cpu_set_psw(env, tmpl, env->psw.addr);
cfae5c90 AF	55	break;
	56	case S390_PSWA_REGNUM:
	57	env->psw.addr = tmpl;
	58	break;
	59	case S390_R0_REGNUM ... S390_R15_REGNUM:
218829db	60	env->regs[n - S390_R0_REGNUM] = tmpl;
cfae5c90	61	break;
73d510c9 DH	62	default:
	63	return 0;
	64	}
	65	return 8;
	66	}
	67
	68	/* the values represent the positions in s390-acr.xml */
	69	#define S390_A0_REGNUM 0
	70	#define S390_A15_REGNUM 15
	71	/* total number of registers in s390-acr.xml */
	72	#define S390_NUM_AC_REGS 16
	73
a010bdbe	74	static int cpu_read_ac_reg(CPUS390XState env, GByteArray buf, int n)
73d510c9 DH	75	{
73d510c9 DH	76	switch (n) {
cfae5c90	77	case S390_A0_REGNUM ... S390_A15_REGNUM:
a010bdbe	78	return gdb_get_reg32(buf, env->aregs[n]);
73d510c9 DH	79	default:
	80	return 0;
	81	}
	82	}
	83
	84	static int cpu_write_ac_reg(CPUS390XState env, uint8_t mem_buf, int n)
	85	{
	86	switch (n) {
	87	case S390_A0_REGNUM ... S390_A15_REGNUM:
	88	env->aregs[n] = ldl_p(mem_buf);
29a0af61	89	cpu_synchronize_post_init(env_cpu(env));
73d510c9 DH	90	return 4;
	91	default:
	92	return 0;
	93	}
	94	}
	95
	96	/* the values represent the positions in s390-fpr.xml */
	97	#define S390_FPC_REGNUM 0
	98	#define S390_F0_REGNUM 1
	99	#define S390_F15_REGNUM 16
	100	/* total number of registers in s390-fpr.xml */
	101	#define S390_NUM_FP_REGS 17
	102
a010bdbe	103	static int cpu_read_fp_reg(CPUS390XState env, GByteArray buf, int n)
73d510c9 DH	104	{
73d510c9 DH	105	switch (n) {
cfae5c90	106	case S390_FPC_REGNUM:
a010bdbe	107	return gdb_get_reg32(buf, env->fpc);
cfae5c90	108	case S390_F0_REGNUM ... S390_F15_REGNUM:
a010bdbe	109	return gdb_get_reg64(buf, *get_freg(env, n - S390_F0_REGNUM));
cfae5c90 AF	110	default:
	111	return 0;
	112	}
73d510c9 DH	113	}
	114
	115	static int cpu_write_fp_reg(CPUS390XState env, uint8_t mem_buf, int n)
	116	{
	117	switch (n) {
	118	case S390_FPC_REGNUM:
	119	env->fpc = ldl_p(mem_buf);
	120	return 4;
	121	case S390_F0_REGNUM ... S390_F15_REGNUM:
4f83d7d2	122	*get_freg(env, n - S390_F0_REGNUM) = ldtul_p(mem_buf);
73d510c9 DH	123	return 8;
	124	default:
	125	return 0;
	126	}
	127	}
	128
ca343c7a EF	129	/* the values represent the positions in s390-vx.xml */
	130	#define S390_V0L_REGNUM 0
	131	#define S390_V15L_REGNUM 15
	132	#define S390_V16_REGNUM 16
	133	#define S390_V31_REGNUM 31
	134	/* total number of registers in s390-vx.xml */
	135	#define S390_NUM_VREGS 32
	136
a010bdbe	137	static int cpu_read_vreg(CPUS390XState env, GByteArray buf, int n)
ca343c7a EF	138	{
	139	int ret;
	140
	141	switch (n) {
	142	case S390_V0L_REGNUM ... S390_V15L_REGNUM:
a010bdbe	143	ret = gdb_get_reg64(buf, env->vregs[n][1]);
ca343c7a EF	144	break;
ca343c7a EF	145	case S390_V16_REGNUM ... S390_V31_REGNUM:
a010bdbe AB	146	ret = gdb_get_reg64(buf, env->vregs[n][0]);
a010bdbe AB	147	ret += gdb_get_reg64(buf, env->vregs[n][1]);
ca343c7a EF	148	break;
	149	default:
	150	ret = 0;
	151	}
	152
	153	return ret;
	154	}
	155
	156	static int cpu_write_vreg(CPUS390XState env, uint8_t mem_buf, int n)
	157	{
	158	switch (n) {
	159	case S390_V0L_REGNUM ... S390_V15L_REGNUM:
4f83d7d2	160	env->vregs[n][1] = ldtul_p(mem_buf + 8);
ca343c7a EF	161	return 8;
ca343c7a EF	162	case S390_V16_REGNUM ... S390_V31_REGNUM:
4f83d7d2 DH	163	env->vregs[n][0] = ldtul_p(mem_buf);
4f83d7d2 DH	164	env->vregs[n][1] = ldtul_p(mem_buf + 8);
ca343c7a EF	165	return 16;
	166	default:
	167	return 0;
	168	}
	169	}
	170
5b9f6345 DH	171	/* the values represent the positions in s390-cr.xml */
	172	#define S390_C0_REGNUM 0
	173	#define S390_C15_REGNUM 15
	174	/* total number of registers in s390-cr.xml */
	175	#define S390_NUM_C_REGS 16
	176
	177	#ifndef CONFIG_USER_ONLY
a010bdbe	178	static int cpu_read_c_reg(CPUS390XState env, GByteArray buf, int n)
5b9f6345 DH	179	{
	180	switch (n) {
	181	case S390_C0_REGNUM ... S390_C15_REGNUM:
a010bdbe	182	return gdb_get_regl(buf, env->cregs[n]);
5b9f6345 DH	183	default:
	184	return 0;
	185	}
	186	}
	187
	188	static int cpu_write_c_reg(CPUS390XState env, uint8_t mem_buf, int n)
	189	{
	190	switch (n) {
	191	case S390_C0_REGNUM ... S390_C15_REGNUM:
	192	env->cregs[n] = ldtul_p(mem_buf);
	193	if (tcg_enabled()) {
29a0af61	194	tlb_flush(env_cpu(env));
5b9f6345	195	}
29a0af61	196	cpu_synchronize_post_init(env_cpu(env));
5b9f6345 DH	197	return 8;
	198	default:
	199	return 0;
	200	}
	201	}
8a641ff6 DH	202
	203	/* the values represent the positions in s390-virt.xml */
	204	#define S390_VIRT_CKC_REGNUM 0
	205	#define S390_VIRT_CPUTM_REGNUM 1
	206	#define S390_VIRT_BEA_REGNUM 2
	207	#define S390_VIRT_PREFIX_REGNUM 3
	208	#define S390_VIRT_PP_REGNUM 4
	209	#define S390_VIRT_PFT_REGNUM 5
	210	#define S390_VIRT_PFS_REGNUM 6
	211	#define S390_VIRT_PFC_REGNUM 7
	212	/* total number of registers in s390-virt.xml */
	213	#define S390_NUM_VIRT_REGS 8
	214
a010bdbe	215	static int cpu_read_virt_reg(CPUS390XState env, GByteArray mem_buf, int n)
8a641ff6 DH	216	{
	217	switch (n) {
	218	case S390_VIRT_CKC_REGNUM:
	219	return gdb_get_regl(mem_buf, env->ckc);
	220	case S390_VIRT_CPUTM_REGNUM:
	221	return gdb_get_regl(mem_buf, env->cputm);
	222	case S390_VIRT_BEA_REGNUM:
	223	return gdb_get_regl(mem_buf, env->gbea);
	224	case S390_VIRT_PREFIX_REGNUM:
	225	return gdb_get_regl(mem_buf, env->psa);
	226	case S390_VIRT_PP_REGNUM:
	227	return gdb_get_regl(mem_buf, env->pp);
	228	case S390_VIRT_PFT_REGNUM:
	229	return gdb_get_regl(mem_buf, env->pfault_token);
	230	case S390_VIRT_PFS_REGNUM:
	231	return gdb_get_regl(mem_buf, env->pfault_select);
	232	case S390_VIRT_PFC_REGNUM:
	233	return gdb_get_regl(mem_buf, env->pfault_compare);
	234	default:
	235	return 0;
	236	}
	237	}
	238
	239	static int cpu_write_virt_reg(CPUS390XState env, uint8_t mem_buf, int n)
	240	{
	241	switch (n) {
	242	case S390_VIRT_CKC_REGNUM:
	243	env->ckc = ldtul_p(mem_buf);
29a0af61	244	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	245	return 8;
	246	case S390_VIRT_CPUTM_REGNUM:
	247	env->cputm = ldtul_p(mem_buf);
29a0af61	248	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	249	return 8;
	250	case S390_VIRT_BEA_REGNUM:
	251	env->gbea = ldtul_p(mem_buf);
29a0af61	252	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	253	return 8;
	254	case S390_VIRT_PREFIX_REGNUM:
	255	env->psa = ldtul_p(mem_buf);
29a0af61	256	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	257	return 8;
	258	case S390_VIRT_PP_REGNUM:
	259	env->pp = ldtul_p(mem_buf);
29a0af61	260	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	261	return 8;
	262	case S390_VIRT_PFT_REGNUM:
	263	env->pfault_token = ldtul_p(mem_buf);
29a0af61	264	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	265	return 8;
	266	case S390_VIRT_PFS_REGNUM:
	267	env->pfault_select = ldtul_p(mem_buf);
29a0af61	268	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	269	return 8;
	270	case S390_VIRT_PFC_REGNUM:
	271	env->pfault_compare = ldtul_p(mem_buf);
29a0af61	272	cpu_synchronize_post_init(env_cpu(env));
8a641ff6 DH	273	return 8;
	274	default:
	275	return 0;
	276	}
	277	}
5b9f6345 DH	278	#endif
5b9f6345 DH	279
86158a2a CB	280	/* the values represent the positions in s390-gs.xml */
	281	#define S390_GS_RESERVED_REGNUM 0
	282	#define S390_GS_GSD_REGNUM 1
	283	#define S390_GS_GSSM_REGNUM 2
	284	#define S390_GS_GSEPLA_REGNUM 3
	285	/* total number of registers in s390-gs.xml */
	286	#define S390_NUM_GS_REGS 4
	287
a010bdbe	288	static int cpu_read_gs_reg(CPUS390XState env, GByteArray buf, int n)
86158a2a	289	{
a010bdbe	290	return gdb_get_regl(buf, env->gscb[n]);
86158a2a CB	291	}
	292
	293	static int cpu_write_gs_reg(CPUS390XState env, uint8_t mem_buf, int n)
	294	{
	295	env->gscb[n] = ldtul_p(mem_buf);
29a0af61	296	cpu_synchronize_post_init(env_cpu(env));
86158a2a CB	297	return 8;
	298	}
	299
73d510c9 DH	300	void s390_cpu_gdb_init(CPUState *cs)
	301	{
	302	gdb_register_coprocessor(cs, cpu_read_ac_reg,
	303	cpu_write_ac_reg,
	304	S390_NUM_AC_REGS, "s390-acr.xml", 0);
	305
	306	gdb_register_coprocessor(cs, cpu_read_fp_reg,
	307	cpu_write_fp_reg,
	308	S390_NUM_FP_REGS, "s390-fpr.xml", 0);
ca343c7a EF	309
	310	gdb_register_coprocessor(cs, cpu_read_vreg,
	311	cpu_write_vreg,
	312	S390_NUM_VREGS, "s390-vx.xml", 0);
5b9f6345	313
86158a2a CB	314	gdb_register_coprocessor(cs, cpu_read_gs_reg,
	315	cpu_write_gs_reg,
	316	S390_NUM_GS_REGS, "s390-gs.xml", 0);
	317
5b9f6345 DH	318	#ifndef CONFIG_USER_ONLY
	319	gdb_register_coprocessor(cs, cpu_read_c_reg,
	320	cpu_write_c_reg,
	321	S390_NUM_C_REGS, "s390-cr.xml", 0);
8a641ff6 DH	322
	323	if (kvm_enabled()) {
	324	gdb_register_coprocessor(cs, cpu_read_virt_reg,
	325	cpu_write_virt_reg,
	326	S390_NUM_VIRT_REGS, "s390-virt.xml", 0);
	327	}
5b9f6345	328	#endif
cfae5c90	329	}