b00b61e1fd
This is necessary for upcoming tracepoint support - otherwise, setting a tracepoint and a breakpoint on the same address will fail, since gdbserver won't know about gdb's breakpoint. Tested on s390x-ibm-linux-gnu and s390-ibm-linux-gnu, RHEL 7.2. gdb/gdbserver/ChangeLog: * linux-s390-low.c (s390_supports_z_point_type): New function. (struct linux_target_ops): Wire s390_supports_z_point_type in.
754 lines
20 KiB
C
754 lines
20 KiB
C
/* GNU/Linux S/390 specific low level interface, for the remote server
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for GDB.
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Copyright (C) 2001-2016 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This file is used for both 31-bit and 64-bit S/390 systems. */
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#include "server.h"
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#include "linux-low.h"
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#include "elf/common.h"
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#include <asm/ptrace.h>
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#include "nat/gdb_ptrace.h"
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#include <sys/uio.h>
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#include <elf.h>
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#ifndef HWCAP_S390_HIGH_GPRS
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#define HWCAP_S390_HIGH_GPRS 512
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#endif
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#ifndef HWCAP_S390_TE
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#define HWCAP_S390_TE 1024
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#endif
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#ifndef HWCAP_S390_VX
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#define HWCAP_S390_VX 2048
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#endif
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/* Defined in auto-generated file s390-linux32.c. */
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void init_registers_s390_linux32 (void);
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extern const struct target_desc *tdesc_s390_linux32;
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/* Defined in auto-generated file s390-linux32v1.c. */
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void init_registers_s390_linux32v1 (void);
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extern const struct target_desc *tdesc_s390_linux32v1;
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/* Defined in auto-generated file s390-linux32v2.c. */
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void init_registers_s390_linux32v2 (void);
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extern const struct target_desc *tdesc_s390_linux32v2;
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/* Defined in auto-generated file s390-linux64.c. */
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void init_registers_s390_linux64 (void);
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extern const struct target_desc *tdesc_s390_linux64;
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/* Defined in auto-generated file s390-linux64v1.c. */
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void init_registers_s390_linux64v1 (void);
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extern const struct target_desc *tdesc_s390_linux64v1;
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/* Defined in auto-generated file s390-linux64v2.c. */
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void init_registers_s390_linux64v2 (void);
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extern const struct target_desc *tdesc_s390_linux64v2;
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/* Defined in auto-generated file s390-te-linux64.c. */
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void init_registers_s390_te_linux64 (void);
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extern const struct target_desc *tdesc_s390_te_linux64;
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/* Defined in auto-generated file s390-vx-linux64.c. */
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void init_registers_s390_vx_linux64 (void);
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extern const struct target_desc *tdesc_s390_vx_linux64;
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/* Defined in auto-generated file s390-tevx-linux64.c. */
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void init_registers_s390_tevx_linux64 (void);
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extern const struct target_desc *tdesc_s390_tevx_linux64;
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/* Defined in auto-generated file s390x-linux64.c. */
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void init_registers_s390x_linux64 (void);
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extern const struct target_desc *tdesc_s390x_linux64;
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/* Defined in auto-generated file s390x-linux64v1.c. */
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void init_registers_s390x_linux64v1 (void);
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extern const struct target_desc *tdesc_s390x_linux64v1;
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/* Defined in auto-generated file s390x-linux64v2.c. */
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void init_registers_s390x_linux64v2 (void);
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extern const struct target_desc *tdesc_s390x_linux64v2;
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/* Defined in auto-generated file s390x-te-linux64.c. */
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void init_registers_s390x_te_linux64 (void);
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extern const struct target_desc *tdesc_s390x_te_linux64;
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/* Defined in auto-generated file s390x-vx-linux64.c. */
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void init_registers_s390x_vx_linux64 (void);
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extern const struct target_desc *tdesc_s390x_vx_linux64;
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/* Defined in auto-generated file s390x-tevx-linux64.c. */
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void init_registers_s390x_tevx_linux64 (void);
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extern const struct target_desc *tdesc_s390x_tevx_linux64;
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#define s390_num_regs 52
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static int s390_regmap[] = {
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PT_PSWMASK, PT_PSWADDR,
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PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3,
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PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7,
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PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11,
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PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15,
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PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
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PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
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PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
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PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,
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PT_FPC,
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#ifndef __s390x__
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PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI,
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PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI,
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PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI,
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PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI,
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#else
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PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
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PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
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PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
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PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,
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#endif
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PT_ORIGGPR2,
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};
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#ifdef __s390x__
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#define s390_num_regs_3264 68
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static int s390_regmap_3264[] = {
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PT_PSWMASK, PT_PSWADDR,
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PT_GPR0, PT_GPR0, PT_GPR1, PT_GPR1,
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PT_GPR2, PT_GPR2, PT_GPR3, PT_GPR3,
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PT_GPR4, PT_GPR4, PT_GPR5, PT_GPR5,
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PT_GPR6, PT_GPR6, PT_GPR7, PT_GPR7,
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PT_GPR8, PT_GPR8, PT_GPR9, PT_GPR9,
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PT_GPR10, PT_GPR10, PT_GPR11, PT_GPR11,
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PT_GPR12, PT_GPR12, PT_GPR13, PT_GPR13,
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PT_GPR14, PT_GPR14, PT_GPR15, PT_GPR15,
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PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
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PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
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PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
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PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,
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PT_FPC,
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PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
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PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
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PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
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PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,
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PT_ORIGGPR2,
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};
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#endif
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static int
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s390_cannot_fetch_register (int regno)
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{
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return 0;
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}
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static int
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s390_cannot_store_register (int regno)
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{
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return 0;
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}
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static void
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s390_collect_ptrace_register (struct regcache *regcache, int regno, char *buf)
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{
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int size = register_size (regcache->tdesc, regno);
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if (size < sizeof (long))
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{
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const struct regs_info *regs_info = (*the_low_target.regs_info) ();
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struct usrregs_info *usr = regs_info->usrregs;
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int regaddr = usr->regmap[regno];
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memset (buf, 0, sizeof (long));
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if ((regno ^ 1) < usr->num_regs
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&& usr->regmap[regno ^ 1] == regaddr)
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{
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collect_register (regcache, regno & ~1, buf);
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collect_register (regcache, (regno & ~1) + 1,
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buf + sizeof (long) - size);
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}
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else if (regaddr == PT_PSWMASK)
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{
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/* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying
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the basic addressing mode bit from the PSW address. */
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char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
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collect_register (regcache, regno, buf);
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collect_register (regcache, regno ^ 1, addr);
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buf[1] &= ~0x8;
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buf[size] |= (addr[0] & 0x80);
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}
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else if (regaddr == PT_PSWADDR)
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{
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/* Convert 4-byte PSW address to 8 bytes by clearing the addressing
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mode bit (which gets copied to the PSW mask instead). */
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collect_register (regcache, regno, buf + sizeof (long) - size);
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buf[sizeof (long) - size] &= ~0x80;
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}
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else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15)
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|| regaddr == PT_ORIGGPR2)
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collect_register (regcache, regno, buf + sizeof (long) - size);
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else
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collect_register (regcache, regno, buf);
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}
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else
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collect_register (regcache, regno, buf);
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}
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static void
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s390_supply_ptrace_register (struct regcache *regcache,
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int regno, const char *buf)
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{
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int size = register_size (regcache->tdesc, regno);
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if (size < sizeof (long))
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{
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const struct regs_info *regs_info = (*the_low_target.regs_info) ();
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struct usrregs_info *usr = regs_info->usrregs;
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int regaddr = usr->regmap[regno];
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if ((regno ^ 1) < usr->num_regs
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&& usr->regmap[regno ^ 1] == regaddr)
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{
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supply_register (regcache, regno & ~1, buf);
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supply_register (regcache, (regno & ~1) + 1,
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buf + sizeof (long) - size);
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}
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else if (regaddr == PT_PSWMASK)
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{
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/* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying
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the basic addressing mode into the PSW address. */
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char *mask = alloca (size);
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char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
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memcpy (mask, buf, size);
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mask[1] |= 0x8;
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supply_register (regcache, regno, mask);
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collect_register (regcache, regno ^ 1, addr);
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addr[0] &= ~0x80;
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addr[0] |= (buf[size] & 0x80);
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supply_register (regcache, regno ^ 1, addr);
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}
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else if (regaddr == PT_PSWADDR)
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{
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/* Convert 8-byte PSW address to 4 bytes by truncating, but
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keeping the addressing mode bit (which was set from the mask). */
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char *addr = alloca (size);
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char amode;
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collect_register (regcache, regno, addr);
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amode = addr[0] & 0x80;
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memcpy (addr, buf + sizeof (long) - size, size);
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addr[0] &= ~0x80;
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addr[0] |= amode;
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supply_register (regcache, regno, addr);
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}
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else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15)
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|| regaddr == PT_ORIGGPR2)
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supply_register (regcache, regno, buf + sizeof (long) - size);
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else
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supply_register (regcache, regno, buf);
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}
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else
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supply_register (regcache, regno, buf);
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}
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/* Provide only a fill function for the general register set. ps_lgetregs
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will use this for NPTL support. */
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static void
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s390_fill_gregset (struct regcache *regcache, void *buf)
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{
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int i;
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const struct regs_info *regs_info = (*the_low_target.regs_info) ();
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struct usrregs_info *usr = regs_info->usrregs;
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for (i = 0; i < usr->num_regs; i++)
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{
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if (usr->regmap[i] < PT_PSWMASK
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|| usr->regmap[i] > PT_ACR15)
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continue;
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s390_collect_ptrace_register (regcache, i,
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(char *) buf + usr->regmap[i]);
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}
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}
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/* Fill and store functions for extended register sets. */
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static void
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s390_store_last_break (struct regcache *regcache, const void *buf)
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{
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const char *p;
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p = (const char *) buf + 8 - register_size (regcache->tdesc, 0);
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supply_register_by_name (regcache, "last_break", p);
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}
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static void
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s390_fill_system_call (struct regcache *regcache, void *buf)
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{
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collect_register_by_name (regcache, "system_call", buf);
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}
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static void
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s390_store_system_call (struct regcache *regcache, const void *buf)
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{
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supply_register_by_name (regcache, "system_call", buf);
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}
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static void
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s390_store_tdb (struct regcache *regcache, const void *buf)
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{
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int tdb0 = find_regno (regcache->tdesc, "tdb0");
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int tr0 = find_regno (regcache->tdesc, "tr0");
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int i;
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for (i = 0; i < 4; i++)
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supply_register (regcache, tdb0 + i, (const char *) buf + 8 * i);
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for (i = 0; i < 16; i++)
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supply_register (regcache, tr0 + i, (const char *) buf + 8 * (16 + i));
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}
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static void
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s390_fill_vxrs_low (struct regcache *regcache, void *buf)
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{
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int v0 = find_regno (regcache->tdesc, "v0l");
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int i;
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for (i = 0; i < 16; i++)
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collect_register (regcache, v0 + i, (char *) buf + 8 * i);
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}
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static void
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s390_store_vxrs_low (struct regcache *regcache, const void *buf)
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{
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int v0 = find_regno (regcache->tdesc, "v0l");
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int i;
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for (i = 0; i < 16; i++)
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supply_register (regcache, v0 + i, (const char *) buf + 8 * i);
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}
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static void
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s390_fill_vxrs_high (struct regcache *regcache, void *buf)
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{
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int v16 = find_regno (regcache->tdesc, "v16");
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int i;
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for (i = 0; i < 16; i++)
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collect_register (regcache, v16 + i, (char *) buf + 16 * i);
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}
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static void
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s390_store_vxrs_high (struct regcache *regcache, const void *buf)
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{
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int v16 = find_regno (regcache->tdesc, "v16");
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int i;
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for (i = 0; i < 16; i++)
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supply_register (regcache, v16 + i, (const char *) buf + 16 * i);
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}
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static struct regset_info s390_regsets[] = {
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{ 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL },
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/* Last break address is read-only; no fill function. */
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{ PTRACE_GETREGSET, -1, NT_S390_LAST_BREAK, 0, EXTENDED_REGS,
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NULL, s390_store_last_break },
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{ PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0,
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EXTENDED_REGS, s390_fill_system_call, s390_store_system_call },
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/* TDB is read-only. */
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{ PTRACE_GETREGSET, -1, NT_S390_TDB, 0, EXTENDED_REGS,
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NULL, s390_store_tdb },
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{ PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_LOW, 0,
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EXTENDED_REGS, s390_fill_vxrs_low, s390_store_vxrs_low },
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{ PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_HIGH, 0,
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EXTENDED_REGS, s390_fill_vxrs_high, s390_store_vxrs_high },
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NULL_REGSET
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};
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static const gdb_byte s390_breakpoint[] = { 0, 1 };
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#define s390_breakpoint_len 2
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/* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
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static const gdb_byte *
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s390_sw_breakpoint_from_kind (int kind, int *size)
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{
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*size = s390_breakpoint_len;
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return s390_breakpoint;
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}
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static CORE_ADDR
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s390_get_pc (struct regcache *regcache)
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{
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if (register_size (regcache->tdesc, 0) == 4)
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{
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unsigned int pswa;
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collect_register_by_name (regcache, "pswa", &pswa);
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return pswa & 0x7fffffff;
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}
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else
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{
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unsigned long pc;
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collect_register_by_name (regcache, "pswa", &pc);
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return pc;
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}
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}
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static void
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s390_set_pc (struct regcache *regcache, CORE_ADDR newpc)
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{
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if (register_size (regcache->tdesc, 0) == 4)
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{
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unsigned int pswa;
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collect_register_by_name (regcache, "pswa", &pswa);
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pswa = (pswa & 0x80000000) | (newpc & 0x7fffffff);
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supply_register_by_name (regcache, "pswa", &pswa);
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}
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else
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{
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unsigned long pc = newpc;
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supply_register_by_name (regcache, "pswa", &pc);
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}
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}
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#ifdef __s390x__
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static unsigned long
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s390_get_hwcap (const struct target_desc *tdesc)
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{
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int wordsize = register_size (tdesc, 0);
|
|
unsigned char *data = alloca (2 * wordsize);
|
|
int offset = 0;
|
|
|
|
while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize)
|
|
{
|
|
if (wordsize == 4)
|
|
{
|
|
unsigned int *data_p = (unsigned int *)data;
|
|
if (data_p[0] == AT_HWCAP)
|
|
return data_p[1];
|
|
}
|
|
else
|
|
{
|
|
unsigned long *data_p = (unsigned long *)data;
|
|
if (data_p[0] == AT_HWCAP)
|
|
return data_p[1];
|
|
}
|
|
|
|
offset += 2 * wordsize;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
s390_check_regset (int pid, int regset, int regsize)
|
|
{
|
|
gdb_byte *buf = alloca (regsize);
|
|
struct iovec iov;
|
|
|
|
iov.iov_base = buf;
|
|
iov.iov_len = regsize;
|
|
|
|
if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) >= 0
|
|
|| errno == ENODATA)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
#ifdef __s390x__
|
|
/* For a 31-bit inferior, whether the kernel supports using the full
|
|
64-bit GPRs. */
|
|
static int have_hwcap_s390_high_gprs = 0;
|
|
#endif
|
|
|
|
static void
|
|
s390_arch_setup (void)
|
|
{
|
|
const struct target_desc *tdesc;
|
|
struct regset_info *regset;
|
|
|
|
/* Check whether the kernel supports extra register sets. */
|
|
int pid = pid_of (current_thread);
|
|
int have_regset_last_break
|
|
= s390_check_regset (pid, NT_S390_LAST_BREAK, 8);
|
|
int have_regset_system_call
|
|
= s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4);
|
|
int have_regset_tdb = s390_check_regset (pid, NT_S390_TDB, 256);
|
|
int have_regset_vxrs = s390_check_regset (pid, NT_S390_VXRS_LOW, 128)
|
|
&& s390_check_regset (pid, NT_S390_VXRS_HIGH, 256);
|
|
|
|
/* Assume 31-bit inferior process. */
|
|
if (have_regset_system_call)
|
|
tdesc = tdesc_s390_linux32v2;
|
|
else if (have_regset_last_break)
|
|
tdesc = tdesc_s390_linux32v1;
|
|
else
|
|
tdesc = tdesc_s390_linux32;
|
|
|
|
/* On a 64-bit host, check the low bit of the (31-bit) PSWM
|
|
-- if this is one, we actually have a 64-bit inferior. */
|
|
#ifdef __s390x__
|
|
{
|
|
unsigned int pswm;
|
|
struct regcache *regcache = new_register_cache (tdesc);
|
|
|
|
fetch_inferior_registers (regcache, find_regno (tdesc, "pswm"));
|
|
collect_register_by_name (regcache, "pswm", &pswm);
|
|
free_register_cache (regcache);
|
|
|
|
if (pswm & 1)
|
|
{
|
|
if (have_regset_tdb)
|
|
have_regset_tdb =
|
|
(s390_get_hwcap (tdesc_s390x_linux64v2) & HWCAP_S390_TE) != 0;
|
|
if (have_regset_vxrs)
|
|
have_regset_vxrs =
|
|
(s390_get_hwcap (tdesc_s390x_linux64v2) & HWCAP_S390_VX) != 0;
|
|
|
|
if (have_regset_vxrs)
|
|
tdesc = (have_regset_tdb ? tdesc_s390x_tevx_linux64 :
|
|
tdesc_s390x_vx_linux64);
|
|
else if (have_regset_tdb)
|
|
tdesc = tdesc_s390x_te_linux64;
|
|
else if (have_regset_system_call)
|
|
tdesc = tdesc_s390x_linux64v2;
|
|
else if (have_regset_last_break)
|
|
tdesc = tdesc_s390x_linux64v1;
|
|
else
|
|
tdesc = tdesc_s390x_linux64;
|
|
}
|
|
|
|
/* For a 31-bit inferior, check whether the kernel supports
|
|
using the full 64-bit GPRs. */
|
|
else if (s390_get_hwcap (tdesc) & HWCAP_S390_HIGH_GPRS)
|
|
{
|
|
have_hwcap_s390_high_gprs = 1;
|
|
if (have_regset_tdb)
|
|
have_regset_tdb = (s390_get_hwcap (tdesc) & HWCAP_S390_TE) != 0;
|
|
if (have_regset_vxrs)
|
|
have_regset_vxrs = (s390_get_hwcap (tdesc) & HWCAP_S390_VX) != 0;
|
|
|
|
if (have_regset_vxrs)
|
|
tdesc = (have_regset_tdb ? tdesc_s390_tevx_linux64 :
|
|
tdesc_s390_vx_linux64);
|
|
else if (have_regset_tdb)
|
|
tdesc = tdesc_s390_te_linux64;
|
|
else if (have_regset_system_call)
|
|
tdesc = tdesc_s390_linux64v2;
|
|
else if (have_regset_last_break)
|
|
tdesc = tdesc_s390_linux64v1;
|
|
else
|
|
tdesc = tdesc_s390_linux64;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Update target_regsets according to available register sets. */
|
|
for (regset = s390_regsets; regset->size >= 0; regset++)
|
|
if (regset->get_request == PTRACE_GETREGSET)
|
|
switch (regset->nt_type)
|
|
{
|
|
case NT_S390_LAST_BREAK:
|
|
regset->size = have_regset_last_break? 8 : 0;
|
|
break;
|
|
case NT_S390_SYSTEM_CALL:
|
|
regset->size = have_regset_system_call? 4 : 0;
|
|
break;
|
|
case NT_S390_TDB:
|
|
regset->size = have_regset_tdb ? 256 : 0;
|
|
break;
|
|
case NT_S390_VXRS_LOW:
|
|
regset->size = have_regset_vxrs ? 128 : 0;
|
|
break;
|
|
case NT_S390_VXRS_HIGH:
|
|
regset->size = have_regset_vxrs ? 256 : 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
current_process ()->tdesc = tdesc;
|
|
}
|
|
|
|
|
|
static int
|
|
s390_breakpoint_at (CORE_ADDR pc)
|
|
{
|
|
unsigned char c[s390_breakpoint_len];
|
|
read_inferior_memory (pc, c, s390_breakpoint_len);
|
|
return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0;
|
|
}
|
|
|
|
/* Breakpoint/Watchpoint support. */
|
|
|
|
/* The "supports_z_point_type" linux_target_ops method. */
|
|
|
|
static int
|
|
s390_supports_z_point_type (char z_type)
|
|
{
|
|
switch (z_type)
|
|
{
|
|
case Z_PACKET_SW_BP:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Support for hardware single step. */
|
|
|
|
static int
|
|
s390_supports_hardware_single_step (void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static struct usrregs_info s390_usrregs_info =
|
|
{
|
|
s390_num_regs,
|
|
s390_regmap,
|
|
};
|
|
|
|
static struct regsets_info s390_regsets_info =
|
|
{
|
|
s390_regsets, /* regsets */
|
|
0, /* num_regsets */
|
|
NULL, /* disabled_regsets */
|
|
};
|
|
|
|
static struct regs_info regs_info =
|
|
{
|
|
NULL, /* regset_bitmap */
|
|
&s390_usrregs_info,
|
|
&s390_regsets_info
|
|
};
|
|
|
|
#ifdef __s390x__
|
|
static struct usrregs_info s390_usrregs_info_3264 =
|
|
{
|
|
s390_num_regs_3264,
|
|
s390_regmap_3264
|
|
};
|
|
|
|
static struct regsets_info s390_regsets_info_3264 =
|
|
{
|
|
s390_regsets, /* regsets */
|
|
0, /* num_regsets */
|
|
NULL, /* disabled_regsets */
|
|
};
|
|
|
|
static struct regs_info regs_info_3264 =
|
|
{
|
|
NULL, /* regset_bitmap */
|
|
&s390_usrregs_info_3264,
|
|
&s390_regsets_info_3264
|
|
};
|
|
#endif
|
|
|
|
static const struct regs_info *
|
|
s390_regs_info (void)
|
|
{
|
|
#ifdef __s390x__
|
|
if (have_hwcap_s390_high_gprs)
|
|
{
|
|
const struct target_desc *tdesc = current_process ()->tdesc;
|
|
|
|
if (register_size (tdesc, 0) == 4)
|
|
return ®s_info_3264;
|
|
}
|
|
#endif
|
|
return ®s_info;
|
|
}
|
|
|
|
struct linux_target_ops the_low_target = {
|
|
s390_arch_setup,
|
|
s390_regs_info,
|
|
s390_cannot_fetch_register,
|
|
s390_cannot_store_register,
|
|
NULL, /* fetch_register */
|
|
s390_get_pc,
|
|
s390_set_pc,
|
|
NULL, /* breakpoint_kind_from_pc */
|
|
s390_sw_breakpoint_from_kind,
|
|
NULL,
|
|
s390_breakpoint_len,
|
|
s390_breakpoint_at,
|
|
s390_supports_z_point_type,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
s390_collect_ptrace_register,
|
|
s390_supply_ptrace_register,
|
|
NULL, /* siginfo_fixup */
|
|
NULL, /* new_process */
|
|
NULL, /* new_thread */
|
|
NULL, /* new_fork */
|
|
NULL, /* prepare_to_resume */
|
|
NULL, /* process_qsupported */
|
|
NULL, /* supports_tracepoints */
|
|
NULL, /* get_thread_area */
|
|
NULL, /* install_fast_tracepoint_jump_pad */
|
|
NULL, /* emit_ops */
|
|
NULL, /* get_min_fast_tracepoint_insn_len */
|
|
NULL, /* supports_range_stepping */
|
|
NULL, /* breakpoint_kind_from_current_state */
|
|
s390_supports_hardware_single_step,
|
|
};
|
|
|
|
void
|
|
initialize_low_arch (void)
|
|
{
|
|
/* Initialize the Linux target descriptions. */
|
|
|
|
init_registers_s390_linux32 ();
|
|
init_registers_s390_linux32v1 ();
|
|
init_registers_s390_linux32v2 ();
|
|
init_registers_s390_linux64 ();
|
|
init_registers_s390_linux64v1 ();
|
|
init_registers_s390_linux64v2 ();
|
|
init_registers_s390_te_linux64 ();
|
|
init_registers_s390_vx_linux64 ();
|
|
init_registers_s390_tevx_linux64 ();
|
|
init_registers_s390x_linux64 ();
|
|
init_registers_s390x_linux64v1 ();
|
|
init_registers_s390x_linux64v2 ();
|
|
init_registers_s390x_te_linux64 ();
|
|
init_registers_s390x_vx_linux64 ();
|
|
init_registers_s390x_tevx_linux64 ();
|
|
|
|
initialize_regsets_info (&s390_regsets_info);
|
|
#ifdef __s390x__
|
|
initialize_regsets_info (&s390_regsets_info_3264);
|
|
#endif
|
|
}
|