gdb/gdbserver/linux-s390-low.c - gdb

Global variables defined

Functions defined

Macros defined

Source code

  1. /* GNU/Linux S/390 specific low level interface, for the remote server
  2.    for GDB.
  3.    Copyright (C) 2001-2015 Free Software Foundation, Inc.

  5.    This file is part of GDB.

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

  12.    This program 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
  15.    GNU General Public License for more details.

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

  20. /* This file is used for both 31-bit and 64-bit S/390 systems.  */

  22. #include "server.h"
  23. #include "linux-low.h"
  24. #include "elf/common.h"

  26. #include <asm/ptrace.h>
  27. #include <sys/ptrace.h>
  28. #include <sys/uio.h>
  29. #include <elf.h>

  31. #ifndef HWCAP_S390_HIGH_GPRS
  32. ‌#define HWCAP_S390_HIGH_GPRS 512
  33. #endif

  35. #ifndef HWCAP_S390_TE
  36. ‌#define HWCAP_S390_TE 1024
  37. #endif

  39. #ifndef PTRACE_GETREGSET
  40. ‌#define PTRACE_GETREGSET 0x4204
  41. #endif

  43. #ifndef PTRACE_SETREGSET
  44. ‌#define PTRACE_SETREGSET 0x4205
  45. #endif

  47. /* Defined in auto-generated file s390-linux32.c.  */
  48. void init_registers_s390_linux32 (void);
  49. extern const struct target_desc *tdesc_s390_linux32;

  51. /* Defined in auto-generated file s390-linux32v1.c.  */
  52. void init_registers_s390_linux32v1 (void);
  53. extern const struct target_desc *tdesc_s390_linux32v1;

  55. /* Defined in auto-generated file s390-linux32v2.c.  */
  56. void init_registers_s390_linux32v2 (void);
  57. extern const struct target_desc *tdesc_s390_linux32v2;

  59. /* Defined in auto-generated file s390-linux64.c.  */
  60. void init_registers_s390_linux64 (void);
  61. extern const struct target_desc *tdesc_s390_linux64;

  63. /* Defined in auto-generated file s390-linux64v1.c.  */
  64. void init_registers_s390_linux64v1 (void);
  65. extern const struct target_desc *tdesc_s390_linux64v1;

  67. /* Defined in auto-generated file s390-linux64v2.c.  */
  68. void init_registers_s390_linux64v2 (void);
  69. extern const struct target_desc *tdesc_s390_linux64v2;

  71. /* Defined in auto-generated file s390-te-linux64.c.  */
  72. void init_registers_s390_te_linux64 (void);
  73. extern const struct target_desc *tdesc_s390_te_linux64;

  75. /* Defined in auto-generated file s390x-linux64.c.  */
  76. void init_registers_s390x_linux64 (void);
  77. extern const struct target_desc *tdesc_s390x_linux64;

  79. /* Defined in auto-generated file s390x-linux64v1.c.  */
  80. void init_registers_s390x_linux64v1 (void);
  81. extern const struct target_desc *tdesc_s390x_linux64v1;

  83. /* Defined in auto-generated file s390x-linux64v2.c.  */
  84. void init_registers_s390x_linux64v2 (void);
  85. extern const struct target_desc *tdesc_s390x_linux64v2;

  87. /* Defined in auto-generated file s390x-te-linux64.c.  */
  88. void init_registers_s390x_te_linux64 (void);
  89. extern const struct target_desc *tdesc_s390x_te_linux64;

  91. ‌#define s390_num_regs 52

  93. ‌static int s390_regmap[] = {
  94.   PT_PSWMASK, PT_PSWADDR,

  96.   PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3,
  97.   PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7,
  98.   PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11,
  99.   PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15,

  101.   PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
  102.   PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
  103.   PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
  104.   PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,

  106.   PT_FPC,

  108. #ifndef __s390x__
  109.   PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI,
  110.   PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI,
  111.   PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI,
  112.   PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI,
  113. #else
  114.   PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
  115.   PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
  116.   PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
  117.   PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,
  118. #endif

  120.   PT_ORIGGPR2,
  121. };

  123. #ifdef __s390x__
  124. ‌#define s390_num_regs_3264 68

  126. ‌static int s390_regmap_3264[] = {
  127.   PT_PSWMASK, PT_PSWADDR,

  129.   PT_GPR0, PT_GPR0, PT_GPR1, PT_GPR1,
  130.   PT_GPR2, PT_GPR2, PT_GPR3, PT_GPR3,
  131.   PT_GPR4, PT_GPR4, PT_GPR5, PT_GPR5,
  132.   PT_GPR6, PT_GPR6, PT_GPR7, PT_GPR7,
  133.   PT_GPR8, PT_GPR8, PT_GPR9, PT_GPR9,
  134.   PT_GPR10, PT_GPR10, PT_GPR11, PT_GPR11,
  135.   PT_GPR12, PT_GPR12, PT_GPR13, PT_GPR13,
  136.   PT_GPR14, PT_GPR14, PT_GPR15, PT_GPR15,

  138.   PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
  139.   PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
  140.   PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
  141.   PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,

  143.   PT_FPC,

  145.   PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
  146.   PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
  147.   PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
  148.   PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,

  150.   PT_ORIGGPR2,
  151. };
  152. #endif


  155. static int
  156. ‌s390_cannot_fetch_register (int regno)
  157. {
  158.   return 0;
  159. }

  161. static int
  162. ‌s390_cannot_store_register (int regno)
  163. {
  164.   return 0;
  165. }

  167. static void
  168. ‌s390_collect_ptrace_register (struct regcache *regcache, int regno, char *buf)
  169. {
  170.   int size = register_size (regcache->tdesc, regno);
  171.   if (size < sizeof (long))
  172.     {
  173.       const struct regs_info *regs_info = (*the_low_target.regs_info) ();
  174.       struct usrregs_info *usr = regs_info->usrregs;
  175.       int regaddr = usr->regmap[regno];

  177.       memset (buf, 0, sizeof (long));

  179.       if ((regno ^ 1) < usr->num_regs
  180.           && usr->regmap[regno ^ 1] == regaddr)
  181.         {
  182.           collect_register (regcache, regno & ~1, buf);
  183.           collect_register (regcache, (regno & ~1) + 1,
  184.                             buf + sizeof (long) - size);
  185.         }
  186.       else if (regaddr == PT_PSWMASK)
  187.         {
  188.           /* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying
  189.              the basic addressing mode bit from the PSW address.  */
  190.           char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
  191.           collect_register (regcache, regno, buf);
  192.           collect_register (regcache, regno ^ 1, addr);
  193.           buf[1] &= ~0x8;
  194.           buf[size] |= (addr[0] & 0x80);
  195.         }
  196.       else if (regaddr == PT_PSWADDR)
  197.         {
  198.           /* Convert 4-byte PSW address to 8 bytes by clearing the addressing
  199.              mode bit (which gets copied to the PSW mask instead).  */
  200.           collect_register (regcache, regno, buf + sizeof (long) - size);
  201.           buf[sizeof (long) - size] &= ~0x80;
  202.         }
  203.       else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15)
  204.                || regaddr == PT_ORIGGPR2)
  205.         collect_register (regcache, regno, buf + sizeof (long) - size);
  206.       else
  207.         collect_register (regcache, regno, buf);
  208.     }
  209.   else
  210.     collect_register (regcache, regno, buf);
  211. }

  213. static void
  214. ‌s390_supply_ptrace_register (struct regcache *regcache,
  215.                              int regno, const char *buf)
  216. {
  217.   int size = register_size (regcache->tdesc, regno);
  218.   if (size < sizeof (long))
  219.     {
  220.       const struct regs_info *regs_info = (*the_low_target.regs_info) ();
  221.       struct usrregs_info *usr = regs_info->usrregs;
  222.       int regaddr = usr->regmap[regno];

  224.       if ((regno ^ 1) < usr->num_regs
  225.           && usr->regmap[regno ^ 1] == regaddr)
  226.         {
  227.           supply_register (regcache, regno & ~1, buf);
  228.           supply_register (regcache, (regno & ~1) + 1,
  229.                            buf + sizeof (long) - size);
  230.         }
  231.       else if (regaddr == PT_PSWMASK)
  232.         {
  233.           /* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying
  234.              the basic addressing mode into the PSW address.  */
  235.           char *mask = alloca (size);
  236.           char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
  237.           memcpy (mask, buf, size);
  238.           mask[1] |= 0x8;
  239.           supply_register (regcache, regno, mask);

  241.           collect_register (regcache, regno ^ 1, addr);
  242.           addr[0] &= ~0x80;
  243.           addr[0] |= (buf[size] & 0x80);
  244.           supply_register (regcache, regno ^ 1, addr);
  245.         }
  246.       else if (regaddr == PT_PSWADDR)
  247.         {
  248.           /* Convert 8-byte PSW address to 4 bytes by truncating, but
  249.              keeping the addressing mode bit (which was set from the mask).  */
  250.           char *addr = alloca (size);
  251.           char amode;
  252.           collect_register (regcache, regno, addr);
  253.           amode = addr[0] & 0x80;
  254.           memcpy (addr, buf + sizeof (long) - size, size);
  255.           addr[0] &= ~0x80;
  256.           addr[0] |= amode;
  257.           supply_register (regcache, regno, addr);
  258.         }
  259.       else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15)
  260.                || regaddr == PT_ORIGGPR2)
  261.         supply_register (regcache, regno, buf + sizeof (long) - size);
  262.       else
  263.         supply_register (regcache, regno, buf);
  264.     }
  265.   else
  266.     supply_register (regcache, regno, buf);
  267. }

  269. /* Provide only a fill function for the general register set.  ps_lgetregs
  270.    will use this for NPTL support.  */

  272. static void
  273. ‌s390_fill_gregset (struct regcache *regcache, void *buf)
  274. {
  275.   int i;
  276.   const struct regs_info *regs_info = (*the_low_target.regs_info) ();
  277.   struct usrregs_info *usr = regs_info->usrregs;

  279.   for (i = 0; i < usr->num_regs; i++)
  280.     {
  281.       if (usr->regmap[i] < PT_PSWMASK
  282.           || usr->regmap[i] > PT_ACR15)
  283.         continue;

  285.       s390_collect_ptrace_register (regcache, i,
  286.                                     (char *) buf + usr->regmap[i]);
  287.     }
  288. }

  290. /* Fill and store functions for extended register sets.  */

  292. static void
  293. ‌s390_store_last_break (struct regcache *regcache, const void *buf)
  294. {
  295.   const char *p;

  297.   p = (const char *) buf + 8 - register_size (regcache->tdesc, 0);
  298.   supply_register_by_name (regcache, "last_break", p);
  299. }

  301. static void
  302. ‌s390_fill_system_call (struct regcache *regcache, void *buf)
  303. {
  304.   collect_register_by_name (regcache, "system_call", buf);
  305. }

  307. static void
  308. ‌s390_store_system_call (struct regcache *regcache, const void *buf)
  309. {
  310.   supply_register_by_name (regcache, "system_call", buf);
  311. }

  313. static void
  314. ‌s390_store_tdb (struct regcache *regcache, const void *buf)
  315. {
  316.   int tdb0 = find_regno (regcache->tdesc, "tdb0");
  317.   int tr0 = find_regno (regcache->tdesc, "tr0");
  318.   int i;

  320.   for (i = 0; i < 4; i++)
  321.     supply_register (regcache, tdb0 + i, (const char *) buf + 8 * i);

  323.   for (i = 0; i < 16; i++)
  324.     supply_register (regcache, tr0 + i, (const char *) buf + 8 * (16 + i));
  325. }

  327. ‌static struct regset_info s390_regsets[] = {
  328.   { 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL },
  329.   /* Last break address is read-only; no fill function.  */
  330.   { PTRACE_GETREGSET, -1, NT_S390_LAST_BREAK, 0, EXTENDED_REGS,
  331.     NULL, s390_store_last_break },
  332.   { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0,
  333.     EXTENDED_REGS, s390_fill_system_call, s390_store_system_call },
  334.   /* TDB is read-only.  */
  335.   { PTRACE_GETREGSET, -1, NT_S390_TDB, 0, EXTENDED_REGS,
  336.     NULL, s390_store_tdb },
  337.   { 0, 0, 0, -1, -1, NULL, NULL }
  338. };


  341. ‌static const unsigned char s390_breakpoint[] = { 0, 1 };
  342. ‌#define s390_breakpoint_len 2

  344. static CORE_ADDR
  345. ‌s390_get_pc (struct regcache *regcache)
  346. {
  347.   if (register_size (regcache->tdesc, 0) == 4)
  348.     {
  349.       unsigned int pswa;
  350.       collect_register_by_name (regcache, "pswa", &pswa);
  351.       return pswa & 0x7fffffff;
  352.     }
  353.   else
  354.     {
  355.       unsigned long pc;
  356.       collect_register_by_name (regcache, "pswa", &pc);
  357.       return pc;
  358.     }
  359. }

  361. static void
  362. ‌s390_set_pc (struct regcache *regcache, CORE_ADDR newpc)
  363. {
  364.   if (register_size (regcache->tdesc, 0) == 4)
  365.     {
  366.       unsigned int pswa;
  367.       collect_register_by_name (regcache, "pswa", &pswa);
  368.       pswa = (pswa & 0x80000000) | (newpc & 0x7fffffff);
  369.       supply_register_by_name (regcache, "pswa", &pswa);
  370.     }
  371.   else
  372.     {
  373.       unsigned long pc = newpc;
  374.       supply_register_by_name (regcache, "pswa", &pc);
  375.     }
  376. }

  378. #ifdef __s390x__
  379. static unsigned long
  380. ‌s390_get_hwcap (const struct target_desc *tdesc)
  381. {
  382.   int wordsize = register_size (tdesc, 0);
  383.   unsigned char *data = alloca (2 * wordsize);
  384.   int offset = 0;

  386.   while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize)
  387.     {
  388.       if (wordsize == 4)
  389.         {
  390.           unsigned int *data_p = (unsigned int *)data;
  391.           if (data_p[0] == AT_HWCAP)
  392.             return data_p[1];
  393.         }
  394.       else
  395.         {
  396.           unsigned long *data_p = (unsigned long *)data;
  397.           if (data_p[0] == AT_HWCAP)
  398.             return data_p[1];
  399.         }

  401.       offset += 2 * wordsize;
  402.     }

  404.   return 0;
  405. }
  406. #endif

  408. static int
  409. ‌s390_check_regset (int pid, int regset, int regsize)
  410. {
  411.   gdb_byte *buf = alloca (regsize);
  412.   struct iovec iov;

  414.   iov.iov_base = buf;
  415.   iov.iov_len = regsize;

  417.   if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) >= 0
  418.       || errno == ENODATA)
  419.     return 1;
  420.   return 0;
  421. }

  423. #ifdef __s390x__
  424. /* For a 31-bit inferior, whether the kernel supports using the full
  425.    64-bit GPRs.  */
  426. ‌static int have_hwcap_s390_high_gprs = 0;
  427. #endif

  429. static void
  430. ‌s390_arch_setup (void)
  431. {
  432.   const struct target_desc *tdesc;
  433.   struct regset_info *regset;

  435.   /* Check whether the kernel supports extra register sets.  */
  436.   int pid = pid_of (current_thread);
  437.   int have_regset_last_break
  438.     = s390_check_regset (pid, NT_S390_LAST_BREAK, 8);
  439.   int have_regset_system_call
  440.     = s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4);
  441.   int have_regset_tdb = s390_check_regset (pid, NT_S390_TDB, 256);

  443.   /* Assume 31-bit inferior process.  */
  444.   if (have_regset_system_call)
  445.     tdesc = tdesc_s390_linux32v2;
  446.   else if (have_regset_last_break)
  447.     tdesc = tdesc_s390_linux32v1;
  448.   else
  449.     tdesc = tdesc_s390_linux32;

  451.   /* On a 64-bit host, check the low bit of the (31-bit) PSWM
  452.      -- if this is one, we actually have a 64-bit inferior.  */
  453. #ifdef __s390x__
  454.   {
  455.     unsigned int pswm;
  456.     struct regcache *regcache = new_register_cache (tdesc);

  458.     fetch_inferior_registers (regcache, find_regno (tdesc, "pswm"));
  459.     collect_register_by_name (regcache, "pswm", &pswm);
  460.     free_register_cache (regcache);

  462.     if (pswm & 1)
  463.       {
  464.         if (have_regset_tdb)
  465.           have_regset_tdb =
  466.             (s390_get_hwcap (tdesc_s390x_linux64v2) & HWCAP_S390_TE) != 0;

  468.         if (have_regset_tdb)
  469.           tdesc = tdesc_s390x_te_linux64;
  470.         else if (have_regset_system_call)
  471.           tdesc = tdesc_s390x_linux64v2;
  472.         else if (have_regset_last_break)
  473.           tdesc = tdesc_s390x_linux64v1;
  474.         else
  475.           tdesc = tdesc_s390x_linux64;
  476.       }

  478.     /* For a 31-bit inferior, check whether the kernel supports
  479.        using the full 64-bit GPRs.  */
  480.     else if (s390_get_hwcap (tdesc) & HWCAP_S390_HIGH_GPRS)
  481.       {
  482.         have_hwcap_s390_high_gprs = 1;
  483.         if (have_regset_tdb)
  484.           have_regset_tdb = (s390_get_hwcap (tdesc) & HWCAP_S390_TE) != 0;

  486.         if (have_regset_tdb)
  487.           tdesc = tdesc_s390_te_linux64;
  488.         else if (have_regset_system_call)
  489.           tdesc = tdesc_s390_linux64v2;
  490.         else if (have_regset_last_break)
  491.           tdesc = tdesc_s390_linux64v1;
  492.         else
  493.           tdesc = tdesc_s390_linux64;
  494.       }
  495.   }
  496. #endif

  498.   /* Update target_regsets according to available register sets.  */
  499.   for (regset = s390_regsets; regset->size >= 0; regset++)
  500.     if (regset->get_request == PTRACE_GETREGSET)
  501.       switch (regset->nt_type)
  502.         {
  503.         case NT_S390_LAST_BREAK:
  504.           regset->size = have_regset_last_break? 8 : 0;
  505.           break;
  506.         case NT_S390_SYSTEM_CALL:
  507.           regset->size = have_regset_system_call? 4 : 0;
  508.           break;
  509.         case NT_S390_TDB:
  510.           regset->size = have_regset_tdb ? 256 : 0;
  511.         default:
  512.           break;
  513.         }

  515.   current_process ()->tdesc = tdesc;
  516. }


  519. static int
  520. ‌s390_breakpoint_at (CORE_ADDR pc)
  521. {
  522.   unsigned char c[s390_breakpoint_len];
  523.   read_inferior_memory (pc, c, s390_breakpoint_len);
  524.   return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0;
  525. }

  527. ‌static struct usrregs_info s390_usrregs_info =
  528.   {
  529.     s390_num_regs,
  530.     s390_regmap,
  531.   };

  533. ‌static struct regsets_info s390_regsets_info =
  534.   {
  535.     s390_regsets, /* regsets */
  536.     0, /* num_regsets */
  537.     NULL, /* disabled_regsets */
  538.   };

  540. ‌static struct regs_info regs_info =
  541.   {
  542.     NULL, /* regset_bitmap */
  543.     &s390_usrregs_info,
  544.     &s390_regsets_info
  545.   };

  547. #ifdef __s390x__
  548. ‌static struct usrregs_info s390_usrregs_info_3264 =
  549.   {
  550.     s390_num_regs_3264,
  551.     s390_regmap_3264
  552.   };

  554. ‌static struct regsets_info s390_regsets_info_3264 =
  555.   {
  556.     s390_regsets, /* regsets */
  557.     0, /* num_regsets */
  558.     NULL, /* disabled_regsets */
  559.   };

  561. ‌static struct regs_info regs_info_3264 =
  562.   {
  563.     NULL, /* regset_bitmap */
  564.     &s390_usrregs_info_3264,
  565.     &s390_regsets_info_3264
  566.   };
  567. #endif

  569. static const struct regs_info *
  570. ‌s390_regs_info (void)
  571. {
  572. #ifdef __s390x__
  573.   if (have_hwcap_s390_high_gprs)
  574.     {
  575.       const struct target_desc *tdesc = current_process ()->tdesc;

  577.       if (register_size (tdesc, 0) == 4)
  578.         return &regs_info_3264;
  579.     }
  580. #endif
  581.   return &regs_info;
  582. }

  584. ‌struct linux_target_ops the_low_target = {
  585.   s390_arch_setup,
  586.   s390_regs_info,
  587.   s390_cannot_fetch_register,
  588.   s390_cannot_store_register,
  589.   NULL, /* fetch_register */
  590.   s390_get_pc,
  591.   s390_set_pc,
  592.   s390_breakpoint,
  593.   s390_breakpoint_len,
  594.   NULL,
  595.   s390_breakpoint_len,
  596.   s390_breakpoint_at,
  597.   NULL,  /* supports_z_point_type */
  598.   NULL,
  599.   NULL,
  600.   NULL,
  601.   NULL,
  602.   s390_collect_ptrace_register,
  603.   s390_supply_ptrace_register,
  604. };

  606. void
  607. ‌initialize_low_arch (void)
  608. {
  609.   /* Initialize the Linux target descriptions.  */

  611.   init_registers_s390_linux32 ();
  612.   init_registers_s390_linux32v1 ();
  613.   init_registers_s390_linux32v2 ();
  614.   init_registers_s390_linux64 ();
  615.   init_registers_s390_linux64v1 ();
  616.   init_registers_s390_linux64v2 ();
  617.   init_registers_s390_te_linux64 ();
  618.   init_registers_s390x_linux64 ();
  619.   init_registers_s390x_linux64v1 ();
  620.   init_registers_s390x_linux64v2 ();
  621.   init_registers_s390x_te_linux64 ();

  623.   initialize_regsets_info (&s390_regsets_info);
  624. #ifdef __s390x__
  625.   initialize_regsets_info (&s390_regsets_info_3264);
  626. #endif
  627. }