+++ /dev/null
-/* GNU/Linux S/390 specific low level interface, for the remote server
- for GDB.
- Copyright (C) 2001-2020 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/>. */
-
-/* This file is used for both 31-bit and 64-bit S/390 systems. */
-
-#include "server.h"
-#include "linux-low.h"
-#include "elf/common.h"
-#include "ax.h"
-#include "tracepoint.h"
-
-#include <asm/ptrace.h>
-#include "nat/gdb_ptrace.h"
-#include <sys/uio.h>
-#include <elf.h>
-#include <inttypes.h>
-
-#include "linux-s390-tdesc.h"
-
-#ifndef HWCAP_S390_HIGH_GPRS
-#define HWCAP_S390_HIGH_GPRS 512
-#endif
-
-#ifndef HWCAP_S390_TE
-#define HWCAP_S390_TE 1024
-#endif
-
-#ifndef HWCAP_S390_VX
-#define HWCAP_S390_VX 2048
-#endif
-
-#ifndef HWCAP_S390_GS
-#define HWCAP_S390_GS 16384
-#endif
-
-#define s390_num_regs 52
-
-static int s390_regmap[] = {
- PT_PSWMASK, PT_PSWADDR,
-
- PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3,
- PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7,
- PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11,
- PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15,
-
- PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
- PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
- PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
- PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,
-
- PT_FPC,
-
-#ifndef __s390x__
- PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI,
- PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI,
- PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI,
- PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI,
-#else
- PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
- PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
- PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
- PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,
-#endif
-
- PT_ORIGGPR2,
-};
-
-#define s390_num_regs_3264 68
-
-#ifdef __s390x__
-static int s390_regmap_3264[] = {
- PT_PSWMASK, PT_PSWADDR,
-
- PT_GPR0, PT_GPR0, PT_GPR1, PT_GPR1,
- PT_GPR2, PT_GPR2, PT_GPR3, PT_GPR3,
- PT_GPR4, PT_GPR4, PT_GPR5, PT_GPR5,
- PT_GPR6, PT_GPR6, PT_GPR7, PT_GPR7,
- PT_GPR8, PT_GPR8, PT_GPR9, PT_GPR9,
- PT_GPR10, PT_GPR10, PT_GPR11, PT_GPR11,
- PT_GPR12, PT_GPR12, PT_GPR13, PT_GPR13,
- PT_GPR14, PT_GPR14, PT_GPR15, PT_GPR15,
-
- PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
- PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
- PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
- PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,
-
- PT_FPC,
-
- PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
- PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
- PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
- PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,
-
- PT_ORIGGPR2,
-};
-#else
-static int s390_regmap_3264[] = {
- PT_PSWMASK, PT_PSWADDR,
-
- -1, PT_GPR0, -1, PT_GPR1,
- -1, PT_GPR2, -1, PT_GPR3,
- -1, PT_GPR4, -1, PT_GPR5,
- -1, PT_GPR6, -1, PT_GPR7,
- -1, PT_GPR8, -1, PT_GPR9,
- -1, PT_GPR10, -1, PT_GPR11,
- -1, PT_GPR12, -1, PT_GPR13,
- -1, PT_GPR14, -1, PT_GPR15,
-
- PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
- PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
- PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
- PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,
-
- PT_FPC,
-
- PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI,
- PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI,
- PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI,
- PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI,
-
- PT_ORIGGPR2,
-};
-#endif
-
-
-static int
-s390_cannot_fetch_register (int regno)
-{
- return 0;
-}
-
-static int
-s390_cannot_store_register (int regno)
-{
- return 0;
-}
-
-static void
-s390_collect_ptrace_register (struct regcache *regcache, int regno, char *buf)
-{
- int size = register_size (regcache->tdesc, regno);
- const struct regs_info *regs_info = (*the_low_target.regs_info) ();
- struct usrregs_info *usr = regs_info->usrregs;
- int regaddr = usr->regmap[regno];
-
- if (size < sizeof (long))
- {
- memset (buf, 0, sizeof (long));
-
- if ((regno ^ 1) < usr->num_regs
- && usr->regmap[regno ^ 1] == regaddr)
- {
- collect_register (regcache, regno & ~1, buf);
- collect_register (regcache, (regno & ~1) + 1,
- buf + sizeof (long) - size);
- }
- else if (regaddr == PT_PSWMASK)
- {
- /* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying
- the basic addressing mode bit from the PSW address. */
- gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1));
- collect_register (regcache, regno, buf);
- collect_register (regcache, regno ^ 1, addr);
- buf[1] &= ~0x8;
- buf[size] |= (addr[0] & 0x80);
- }
- else if (regaddr == PT_PSWADDR)
- {
- /* Convert 4-byte PSW address to 8 bytes by clearing the addressing
- mode bit (which gets copied to the PSW mask instead). */
- collect_register (regcache, regno, buf + sizeof (long) - size);
- buf[sizeof (long) - size] &= ~0x80;
- }
- else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15)
- || regaddr == PT_ORIGGPR2)
- collect_register (regcache, regno, buf + sizeof (long) - size);
- else
- collect_register (regcache, regno, buf);
- }
- else if (regaddr != -1)
- collect_register (regcache, regno, buf);
-}
-
-static void
-s390_supply_ptrace_register (struct regcache *regcache,
- int regno, const char *buf)
-{
- int size = register_size (regcache->tdesc, regno);
- const struct regs_info *regs_info = (*the_low_target.regs_info) ();
- struct usrregs_info *usr = regs_info->usrregs;
- int regaddr = usr->regmap[regno];
-
- if (size < sizeof (long))
- {
- if ((regno ^ 1) < usr->num_regs
- && usr->regmap[regno ^ 1] == regaddr)
- {
- supply_register (regcache, regno & ~1, buf);
- supply_register (regcache, (regno & ~1) + 1,
- buf + sizeof (long) - size);
- }
- else if (regaddr == PT_PSWMASK)
- {
- /* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying
- the basic addressing mode into the PSW address. */
- gdb_byte *mask = (gdb_byte *) alloca (size);
- gdb_byte *addr = (gdb_byte *) alloca (register_size (regcache->tdesc, regno ^ 1));
- memcpy (mask, buf, size);
- mask[1] |= 0x8;
- supply_register (regcache, regno, mask);
-
- collect_register (regcache, regno ^ 1, addr);
- addr[0] &= ~0x80;
- addr[0] |= (buf[size] & 0x80);
- supply_register (regcache, regno ^ 1, addr);
- }
- else if (regaddr == PT_PSWADDR)
- {
- /* Convert 8-byte PSW address to 4 bytes by truncating, but
- keeping the addressing mode bit (which was set from the mask). */
- gdb_byte *addr = (gdb_byte *) alloca (size);
- char amode;
- collect_register (regcache, regno, addr);
- amode = addr[0] & 0x80;
- memcpy (addr, buf + sizeof (long) - size, size);
- addr[0] &= ~0x80;
- addr[0] |= amode;
- supply_register (regcache, regno, addr);
- }
- else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15)
- || regaddr == PT_ORIGGPR2)
- supply_register (regcache, regno, buf + sizeof (long) - size);
- else
- supply_register (regcache, regno, buf);
- }
- else if (regaddr != -1)
- supply_register (regcache, regno, buf);
-}
-
-/* Provide only a fill function for the general register set. ps_lgetregs
- will use this for NPTL support. */
-
-static void
-s390_fill_gregset (struct regcache *regcache, void *buf)
-{
- int i;
- const struct regs_info *regs_info = (*the_low_target.regs_info) ();
- struct usrregs_info *usr = regs_info->usrregs;
-
- for (i = 0; i < usr->num_regs; i++)
- {
- if (usr->regmap[i] < PT_PSWMASK
- || usr->regmap[i] > PT_ACR15)
- continue;
-
- s390_collect_ptrace_register (regcache, i,
- (char *) buf + usr->regmap[i]);
- }
-}
-
-/* Fill and store functions for extended register sets. */
-
-#ifndef __s390x__
-static void
-s390_fill_gprs_high (struct regcache *regcache, void *buf)
-{
- int r0h = find_regno (regcache->tdesc, "r0h");
- int i;
-
- for (i = 0; i < 16; i++)
- collect_register (regcache, r0h + 2 * i, (char *) buf + 4 * i);
-}
-
-static void
-s390_store_gprs_high (struct regcache *regcache, const void *buf)
-{
- int r0h = find_regno (regcache->tdesc, "r0h");
- int i;
-
- for (i = 0; i < 16; i++)
- supply_register (regcache, r0h + 2 * i, (const char *) buf + 4 * i);
-}
-#endif
-
-static void
-s390_store_last_break (struct regcache *regcache, const void *buf)
-{
- const char *p;
-
- p = (const char *) buf + 8 - register_size (regcache->tdesc, 0);
- supply_register_by_name (regcache, "last_break", p);
-}
-
-static void
-s390_fill_system_call (struct regcache *regcache, void *buf)
-{
- collect_register_by_name (regcache, "system_call", buf);
-}
-
-static void
-s390_store_system_call (struct regcache *regcache, const void *buf)
-{
- supply_register_by_name (regcache, "system_call", buf);
-}
-
-static void
-s390_store_tdb (struct regcache *regcache, const void *buf)
-{
- int tdb0 = find_regno (regcache->tdesc, "tdb0");
- int tr0 = find_regno (regcache->tdesc, "tr0");
- int i;
-
- for (i = 0; i < 4; i++)
- supply_register (regcache, tdb0 + i, (const char *) buf + 8 * i);
-
- for (i = 0; i < 16; i++)
- supply_register (regcache, tr0 + i, (const char *) buf + 8 * (16 + i));
-}
-
-static void
-s390_fill_vxrs_low (struct regcache *regcache, void *buf)
-{
- int v0 = find_regno (regcache->tdesc, "v0l");
- int i;
-
- for (i = 0; i < 16; i++)
- collect_register (regcache, v0 + i, (char *) buf + 8 * i);
-}
-
-static void
-s390_store_vxrs_low (struct regcache *regcache, const void *buf)
-{
- int v0 = find_regno (regcache->tdesc, "v0l");
- int i;
-
- for (i = 0; i < 16; i++)
- supply_register (regcache, v0 + i, (const char *) buf + 8 * i);
-}
-
-static void
-s390_fill_vxrs_high (struct regcache *regcache, void *buf)
-{
- int v16 = find_regno (regcache->tdesc, "v16");
- int i;
-
- for (i = 0; i < 16; i++)
- collect_register (regcache, v16 + i, (char *) buf + 16 * i);
-}
-
-static void
-s390_store_vxrs_high (struct regcache *regcache, const void *buf)
-{
- int v16 = find_regno (regcache->tdesc, "v16");
- int i;
-
- for (i = 0; i < 16; i++)
- supply_register (regcache, v16 + i, (const char *) buf + 16 * i);
-}
-
-static void
-s390_store_gs (struct regcache *regcache, const void *buf)
-{
- int gsd = find_regno (regcache->tdesc, "gsd");
- int i;
-
- for (i = 0; i < 3; i++)
- supply_register (regcache, gsd + i, (const char *) buf + 8 * (i + 1));
-}
-
-static void
-s390_store_gsbc (struct regcache *regcache, const void *buf)
-{
- int bc_gsd = find_regno (regcache->tdesc, "bc_gsd");
- int i;
-
- for (i = 0; i < 3; i++)
- supply_register (regcache, bc_gsd + i, (const char *) buf + 8 * (i + 1));
-}
-
-static struct regset_info s390_regsets[] = {
- { 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL },
-#ifndef __s390x__
- { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_HIGH_GPRS, 0,
- EXTENDED_REGS, s390_fill_gprs_high, s390_store_gprs_high },
-#endif
- /* Last break address is read-only; no fill function. */
- { PTRACE_GETREGSET, -1, NT_S390_LAST_BREAK, 0, EXTENDED_REGS,
- NULL, s390_store_last_break },
- { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0,
- EXTENDED_REGS, s390_fill_system_call, s390_store_system_call },
- /* TDB is read-only. */
- { PTRACE_GETREGSET, -1, NT_S390_TDB, 0, EXTENDED_REGS,
- NULL, s390_store_tdb },
- { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_LOW, 0,
- EXTENDED_REGS, s390_fill_vxrs_low, s390_store_vxrs_low },
- { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_HIGH, 0,
- EXTENDED_REGS, s390_fill_vxrs_high, s390_store_vxrs_high },
- /* Guarded storage registers are read-only. */
- { PTRACE_GETREGSET, -1, NT_S390_GS_CB, 0, EXTENDED_REGS,
- NULL, s390_store_gs },
- { PTRACE_GETREGSET, -1, NT_S390_GS_BC, 0, EXTENDED_REGS,
- NULL, s390_store_gsbc },
- NULL_REGSET
-};
-
-
-static const gdb_byte s390_breakpoint[] = { 0, 1 };
-#define s390_breakpoint_len 2
-
-/* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
-
-static const gdb_byte *
-s390_sw_breakpoint_from_kind (int kind, int *size)
-{
- *size = s390_breakpoint_len;
- return s390_breakpoint;
-}
-
-static CORE_ADDR
-s390_get_pc (struct regcache *regcache)
-{
- if (register_size (regcache->tdesc, 0) == 4)
- {
- unsigned int pswa;
- collect_register_by_name (regcache, "pswa", &pswa);
- return pswa & 0x7fffffff;
- }
- else
- {
- unsigned long pc;
- collect_register_by_name (regcache, "pswa", &pc);
- return pc;
- }
-}
-
-static void
-s390_set_pc (struct regcache *regcache, CORE_ADDR newpc)
-{
- if (register_size (regcache->tdesc, 0) == 4)
- {
- unsigned int pswa;
- collect_register_by_name (regcache, "pswa", &pswa);
- pswa = (pswa & 0x80000000) | (newpc & 0x7fffffff);
- supply_register_by_name (regcache, "pswa", &pswa);
- }
- else
- {
- unsigned long pc = newpc;
- supply_register_by_name (regcache, "pswa", &pc);
- }
-}
-
-/* Determine the word size for the given PID, in bytes. */
-
-#ifdef __s390x__
-static int
-s390_get_wordsize (int pid)
-{
- errno = 0;
- PTRACE_XFER_TYPE pswm = ptrace (PTRACE_PEEKUSER, pid,
- (PTRACE_TYPE_ARG3) 0,
- (PTRACE_TYPE_ARG4) 0);
- if (errno != 0)
- {
- warning (_("Couldn't determine word size, assuming 64-bit."));
- return 8;
- }
- /* Derive word size from extended addressing mode (PSW bit 31). */
- return pswm & (1L << 32) ? 8 : 4;
-}
-#else
-#define s390_get_wordsize(pid) 4
-#endif
-
-static int
-s390_check_regset (int pid, int regset, int regsize)
-{
- void *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;
-}
-
-/* For a 31-bit inferior, whether the kernel supports using the full
- 64-bit GPRs. */
-static int have_hwcap_s390_high_gprs = 0;
-static int have_hwcap_s390_vx = 0;
-
-static void
-s390_arch_setup (void)
-{
- const struct target_desc *tdesc;
- struct regset_info *regset;
-
- /* Determine word size and HWCAP. */
- int pid = pid_of (current_thread);
- int wordsize = s390_get_wordsize (pid);
- unsigned long hwcap = linux_get_hwcap (wordsize);
-
- /* Check whether the kernel supports extra register sets. */
- 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)
- && (hwcap & HWCAP_S390_TE) != 0);
- int have_regset_vxrs
- = (s390_check_regset (pid, NT_S390_VXRS_LOW, 128)
- && s390_check_regset (pid, NT_S390_VXRS_HIGH, 256)
- && (hwcap & HWCAP_S390_VX) != 0);
- int have_regset_gs
- = (s390_check_regset (pid, NT_S390_GS_CB, 32)
- && s390_check_regset (pid, NT_S390_GS_BC, 32)
- && (hwcap & HWCAP_S390_GS) != 0);
-
- {
-#ifdef __s390x__
- if (wordsize == 8)
- {
- if (have_regset_gs)
- tdesc = tdesc_s390x_gs_linux64;
- else 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
-#endif
- if (hwcap & HWCAP_S390_HIGH_GPRS)
- {
- have_hwcap_s390_high_gprs = 1;
- if (have_regset_gs)
- tdesc = tdesc_s390_gs_linux64;
- else 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;
- }
- else
- {
- /* 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;
- }
-
- have_hwcap_s390_vx = have_regset_vxrs;
- }
-
- /* 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)
- {
-#ifndef __s390x__
- case NT_S390_HIGH_GPRS:
- regset->size = have_hwcap_s390_high_gprs ? 64 : 0;
- break;
-#endif
- 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;
- case NT_S390_GS_CB:
- case NT_S390_GS_BC:
- regset->size = have_regset_gs ? 32 : 0;
- 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
- };
-
-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
- };
-
-static const struct regs_info *
-s390_regs_info (void)
-{
- if (have_hwcap_s390_high_gprs)
- {
-#ifdef __s390x__
- const struct target_desc *tdesc = current_process ()->tdesc;
-
- if (register_size (tdesc, 0) == 4)
- return ®s_info_3264;
-#else
- return ®s_info_3264;
-#endif
- }
- return ®s_info;
-}
-
-/* The "supports_tracepoints" linux_target_ops method. */
-
-static int
-s390_supports_tracepoints (void)
-{
- return 1;
-}
-
-/* Implementation of linux_target_ops method "get_thread_area". */
-
-static int
-s390_get_thread_area (int lwpid, CORE_ADDR *addrp)
-{
- CORE_ADDR res = ptrace (PTRACE_PEEKUSER, lwpid, (long) PT_ACR0, (long) 0);
-#ifdef __s390x__
- struct regcache *regcache = get_thread_regcache (current_thread, 0);
-
- if (register_size (regcache->tdesc, 0) == 4)
- res &= 0xffffffffull;
-#endif
- *addrp = res;
- return 0;
-}
-
-
-/* Fast tracepoint support.
-
- The register save area on stack is identical for all targets:
-
- 0x000+i*0x10: VR0-VR31
- 0x200+i*8: GR0-GR15
- 0x280+i*4: AR0-AR15
- 0x2c0: PSWM [64-bit]
- 0x2c8: PSWA [64-bit]
- 0x2d0: FPC
-
- If we're on 31-bit linux, we just don't store the high parts of the GPRs.
- Likewise, if there's no VX support, we just store the FRs into the slots
- of low VR halves. The agent code is responsible for rearranging that
- into regcache. */
-
-/* Code sequence saving GPRs for 31-bit target with no high GPRs. There's
- one trick used at the very beginning: since there's no way to allocate
- stack space without destroying CC (lay instruction can do it, but it's
- only supported on later CPUs), we take 4 different execution paths for
- every possible value of CC, allocate stack space, save %r0, stuff the
- CC value in %r0 (shifted to match its position in PSWM high word),
- then branch to common path. */
-
-static const unsigned char s390_ft_entry_gpr_esa[] = {
- 0xa7, 0x14, 0x00, 0x1e, /* jo .Lcc3 */
- 0xa7, 0x24, 0x00, 0x14, /* jh .Lcc2 */
- 0xa7, 0x44, 0x00, 0x0a, /* jl .Lcc1 */
- /* CC = 0 */
- 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */
- 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */
- 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */
- 0xa7, 0xf4, 0x00, 0x18, /* j .Lccdone */
- /* .Lcc1: */
- 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */
- 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */
- 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */
- 0xa7, 0xf4, 0x00, 0x10, /* j .Lccdone */
- /* .Lcc2: */
- 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */
- 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */
- 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */
- 0xa7, 0xf4, 0x00, 0x08, /* j .Lccdone */
- /* .Lcc3: */
- 0xa7, 0xfa, 0xfd, 0x00, /* ahi %r15, -0x300 */
- 0x50, 0x00, 0xf2, 0x04, /* st %r0, 0x204(%r15) */
- 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */
- /* .Lccdone: */
- 0x50, 0x10, 0xf2, 0x0c, /* st %r1, 0x20c(%r15) */
- 0x50, 0x20, 0xf2, 0x14, /* st %r2, 0x214(%r15) */
- 0x50, 0x30, 0xf2, 0x1c, /* st %r3, 0x21c(%r15) */
- 0x50, 0x40, 0xf2, 0x24, /* st %r4, 0x224(%r15) */
- 0x50, 0x50, 0xf2, 0x2c, /* st %r5, 0x22c(%r15) */
- 0x50, 0x60, 0xf2, 0x34, /* st %r6, 0x234(%r15) */
- 0x50, 0x70, 0xf2, 0x3c, /* st %r7, 0x23c(%r15) */
- 0x50, 0x80, 0xf2, 0x44, /* st %r8, 0x244(%r15) */
- 0x50, 0x90, 0xf2, 0x4c, /* st %r9, 0x24c(%r15) */
- 0x50, 0xa0, 0xf2, 0x54, /* st %r10, 0x254(%r15) */
- 0x50, 0xb0, 0xf2, 0x5c, /* st %r11, 0x25c(%r15) */
- 0x50, 0xc0, 0xf2, 0x64, /* st %r12, 0x264(%r15) */
- 0x50, 0xd0, 0xf2, 0x6c, /* st %r13, 0x26c(%r15) */
- 0x50, 0xe0, 0xf2, 0x74, /* st %r14, 0x274(%r15) */
- /* Compute original value of %r15 and store it. We use ahi instead
- of la to preserve the whole value, and not just the low 31 bits.
- This is not particularly important here, but essential in the
- zarch case where someone might be using the high word of %r15
- as an extra register. */
- 0x18, 0x1f, /* lr %r1, %r15 */
- 0xa7, 0x1a, 0x03, 0x00, /* ahi %r1, 0x300 */
- 0x50, 0x10, 0xf2, 0x7c, /* st %r1, 0x27c(%r15) */
-};
-
-/* Code sequence saving GPRs for 31-bit target with high GPRs and for 64-bit
- target. Same as above, except this time we can use load/store multiple,
- since the 64-bit regs are tightly packed. */
-
-static const unsigned char s390_ft_entry_gpr_zarch[] = {
- 0xa7, 0x14, 0x00, 0x21, /* jo .Lcc3 */
- 0xa7, 0x24, 0x00, 0x16, /* jh .Lcc2 */
- 0xa7, 0x44, 0x00, 0x0b, /* jl .Lcc1 */
- /* CC = 0 */
- 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */
- 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */
- 0xa7, 0x08, 0x00, 0x00, /* lhi %r0, 0 */
- 0xa7, 0xf4, 0x00, 0x1b, /* j .Lccdone */
- /* .Lcc1: */
- 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */
- 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */
- 0xa7, 0x08, 0x10, 0x00, /* lhi %r0, 0x1000 */
- 0xa7, 0xf4, 0x00, 0x12, /* j .Lccdone */
- /* .Lcc2: */
- 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */
- 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */
- 0xa7, 0x08, 0x20, 0x00, /* lhi %r0, 0x2000 */
- 0xa7, 0xf4, 0x00, 0x09, /* j .Lccdone */
- /* .Lcc3: */
- 0xa7, 0xfb, 0xfd, 0x00, /* aghi %r15, -0x300 */
- 0xeb, 0x0e, 0xf2, 0x00, 0x00, 0x24, /* stmg %r0, %r14, 0x200(%r15) */
- 0xa7, 0x08, 0x30, 0x00, /* lhi %r0, 0x3000 */
- /* .Lccdone: */
- 0xb9, 0x04, 0x00, 0x1f, /* lgr %r1, %r15 */
- 0xa7, 0x1b, 0x03, 0x00, /* aghi %r1, 0x300 */
- 0xe3, 0x10, 0xf2, 0x78, 0x00, 0x24, /* stg %r1, 0x278(%r15) */
-};
-
-/* Code sequence saving ARs, PSWM and FPC. PSWM has to be assembled from
- current PSWM (read by epsw) and CC from entry (in %r0). */
-
-static const unsigned char s390_ft_entry_misc[] = {
- 0x9b, 0x0f, 0xf2, 0x80, /* stam %a0, %a15, 0x20(%%r15) */
- 0xb9, 0x8d, 0x00, 0x23, /* epsw %r2, %r3 */
- 0xa7, 0x18, 0xcf, 0xff, /* lhi %r1, ~0x3000 */
- 0x14, 0x21, /* nr %r2, %r1 */
- 0x16, 0x20, /* or %r2, %r0 */
- 0x50, 0x20, 0xf2, 0xc0, /* st %r2, 0x2c0(%r15) */
- 0x50, 0x30, 0xf2, 0xc4, /* st %r3, 0x2c4(%r15) */
- 0xb2, 0x9c, 0xf2, 0xd0, /* stfpc 0x2d0(%r15) */
-};
-
-/* Code sequence saving FRs, used if VX not supported. */
-
-static const unsigned char s390_ft_entry_fr[] = {
- 0x60, 0x00, 0xf0, 0x00, /* std %f0, 0x000(%r15) */
- 0x60, 0x10, 0xf0, 0x10, /* std %f1, 0x010(%r15) */
- 0x60, 0x20, 0xf0, 0x20, /* std %f2, 0x020(%r15) */
- 0x60, 0x30, 0xf0, 0x30, /* std %f3, 0x030(%r15) */
- 0x60, 0x40, 0xf0, 0x40, /* std %f4, 0x040(%r15) */
- 0x60, 0x50, 0xf0, 0x50, /* std %f5, 0x050(%r15) */
- 0x60, 0x60, 0xf0, 0x60, /* std %f6, 0x060(%r15) */
- 0x60, 0x70, 0xf0, 0x70, /* std %f7, 0x070(%r15) */
- 0x60, 0x80, 0xf0, 0x80, /* std %f8, 0x080(%r15) */
- 0x60, 0x90, 0xf0, 0x90, /* std %f9, 0x090(%r15) */
- 0x60, 0xa0, 0xf0, 0xa0, /* std %f10, 0x0a0(%r15) */
- 0x60, 0xb0, 0xf0, 0xb0, /* std %f11, 0x0b0(%r15) */
- 0x60, 0xc0, 0xf0, 0xc0, /* std %f12, 0x0c0(%r15) */
- 0x60, 0xd0, 0xf0, 0xd0, /* std %f13, 0x0d0(%r15) */
- 0x60, 0xe0, 0xf0, 0xe0, /* std %f14, 0x0e0(%r15) */
- 0x60, 0xf0, 0xf0, 0xf0, /* std %f15, 0x0f0(%r15) */
-};
-
-/* Code sequence saving VRs, used if VX not supported. */
-
-static const unsigned char s390_ft_entry_vr[] = {
- 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x3e, /* vstm %v0, %v15, 0x000(%r15) */
- 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x3e, /* vstm %v16, %v31, 0x100(%r15) */
-};
-
-/* Code sequence doing the collection call for 31-bit target. %r1 contains
- the address of the literal pool. */
-
-static const unsigned char s390_ft_main_31[] = {
- /* Load the literals into registers. */
- 0x58, 0x50, 0x10, 0x00, /* l %r5, 0x0(%r1) */
- 0x58, 0x20, 0x10, 0x04, /* l %r2, 0x4(%r1) */
- 0x58, 0x40, 0x10, 0x08, /* l %r4, 0x8(%r1) */
- 0x58, 0x60, 0x10, 0x0c, /* l %r6, 0xc(%r1) */
- /* Save original PSWA (tracepoint address | 0x80000000). */
- 0x50, 0x50, 0xf2, 0xcc, /* st %r5, 0x2cc(%r15) */
- /* Construct a collecting_t object at %r15+0x2e0. */
- 0x50, 0x20, 0xf2, 0xe0, /* st %r2, 0x2e0(%r15) */
- 0x9b, 0x00, 0xf2, 0xe4, /* stam %a0, %a0, 0x2e4(%r15) */
- /* Move its address to %r0. */
- 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */
- /* Take the lock. */
- /* .Lloop: */
- 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */
- 0xba, 0x10, 0x60, 0x00, /* cs %r1, %r0, 0(%r6) */
- 0xa7, 0x74, 0xff, 0xfc, /* jne .Lloop */
- /* Address of the register save block to %r3. */
- 0x18, 0x3f, /* lr %r3, %r15 */
- /* Make a stack frame, so that we can call the collector. */
- 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */
- /* Call it. */
- 0x0d, 0xe4, /* basr %r14, %r4 */
- /* And get rid of the stack frame again. */
- 0x41, 0xf0, 0xf0, 0x60, /* la %r15, 0x60(%r15) */
- /* Leave the lock. */
- 0x07, 0xf0, /* br %r0 */
- 0xa7, 0x18, 0x00, 0x00, /* lhi %r1, 0 */
- 0x50, 0x10, 0x60, 0x00, /* st %t1, 0(%r6) */
-};
-
-/* Code sequence doing the collection call for 64-bit target. %r1 contains
- the address of the literal pool. */
-
-static const unsigned char s390_ft_main_64[] = {
- /* Load the literals into registers. */
- 0xe3, 0x50, 0x10, 0x00, 0x00, 0x04, /* lg %r5, 0x00(%r1) */
- 0xe3, 0x20, 0x10, 0x08, 0x00, 0x04, /* lg %r2, 0x08(%r1) */
- 0xe3, 0x40, 0x10, 0x10, 0x00, 0x04, /* lg %r4, 0x10(%r1) */
- 0xe3, 0x60, 0x10, 0x18, 0x00, 0x04, /* lg %r6, 0x18(%r1) */
- /* Save original PSWA (tracepoint address). */
- 0xe3, 0x50, 0xf2, 0xc8, 0x00, 0x24, /* stg %r5, 0x2c8(%r15) */
- /* Construct a collecting_t object at %r15+0x2e0. */
- 0xe3, 0x20, 0xf2, 0xe0, 0x00, 0x24, /* stg %r2, 0x2e0(%r15) */
- 0x9b, 0x01, 0xf2, 0xe8, /* stam %a0, %a1, 0x2e8(%r15) */
- /* Move its address to %r0. */
- 0x41, 0x00, 0xf2, 0xe0, /* la %r0, 0x2e0(%r15) */
- /* Take the lock. */
- /* .Lloop: */
- 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */
- 0xeb, 0x10, 0x60, 0x00, 0x00, 0x30, /* csg %r1, %r0, 0(%r6) */
- 0xa7, 0x74, 0xff, 0xfb, /* jne .Lloop */
- /* Address of the register save block to %r3. */
- 0xb9, 0x04, 0x00, 0x3f, /* lgr %r3, %r15 */
- /* Make a stack frame, so that we can call the collector. */
- 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */
- /* Call it. */
- 0x0d, 0xe4, /* basr %r14, %r4 */
- /* And get rid of the stack frame again. */
- 0x41, 0xf0, 0xf0, 0xa0, /* la %r15, 0xa0(%r15) */
- /* Leave the lock. */
- 0x07, 0xf0, /* br %r0 */
- 0xa7, 0x19, 0x00, 0x00, /* lghi %r1, 0 */
- 0xe3, 0x10, 0x60, 0x00, 0x00, 0x24, /* stg %t1, 0(%r6) */
-};
-
-/* Code sequence restoring FRs, for targets with no VX support. */
-
-static const unsigned char s390_ft_exit_fr[] = {
- 0x68, 0x00, 0xf0, 0x00, /* ld %f0, 0x000(%r15) */
- 0x68, 0x10, 0xf0, 0x10, /* ld %f1, 0x010(%r15) */
- 0x68, 0x20, 0xf0, 0x20, /* ld %f2, 0x020(%r15) */
- 0x68, 0x30, 0xf0, 0x30, /* ld %f3, 0x030(%r15) */
- 0x68, 0x40, 0xf0, 0x40, /* ld %f4, 0x040(%r15) */
- 0x68, 0x50, 0xf0, 0x50, /* ld %f5, 0x050(%r15) */
- 0x68, 0x60, 0xf0, 0x60, /* ld %f6, 0x060(%r15) */
- 0x68, 0x70, 0xf0, 0x70, /* ld %f7, 0x070(%r15) */
- 0x68, 0x80, 0xf0, 0x80, /* ld %f8, 0x080(%r15) */
- 0x68, 0x90, 0xf0, 0x90, /* ld %f9, 0x090(%r15) */
- 0x68, 0xa0, 0xf0, 0xa0, /* ld %f10, 0x0a0(%r15) */
- 0x68, 0xb0, 0xf0, 0xb0, /* ld %f11, 0x0b0(%r15) */
- 0x68, 0xc0, 0xf0, 0xc0, /* ld %f12, 0x0c0(%r15) */
- 0x68, 0xd0, 0xf0, 0xd0, /* ld %f13, 0x0d0(%r15) */
- 0x68, 0xe0, 0xf0, 0xe0, /* ld %f14, 0x0e0(%r15) */
- 0x68, 0xf0, 0xf0, 0xf0, /* ld %f15, 0x0f0(%r15) */
-};
-
-/* Code sequence restoring VRs. */
-
-static const unsigned char s390_ft_exit_vr[] = {
- 0xe7, 0x0f, 0xf0, 0x00, 0x00, 0x36, /* vlm %v0, %v15, 0x000(%r15) */
- 0xe7, 0x0f, 0xf1, 0x00, 0x0c, 0x36, /* vlm %v16, %v31, 0x100(%r15) */
-};
-
-/* Code sequence restoring misc registers. As for PSWM, only CC should be
- modified by C code, so we use the alr instruction to restore it by
- manufacturing an operand that'll result in the original flags. */
-
-static const unsigned char s390_ft_exit_misc[] = {
- 0xb2, 0x9d, 0xf2, 0xd0, /* lfpc 0x2d0(%r15) */
- 0x58, 0x00, 0xf2, 0xc0, /* l %r0, 0x2c0(%r15) */
- /* Extract CC to high 2 bits of %r0. */
- 0x88, 0x00, 0x00, 0x0c, /* srl %r0, 12 */
- 0x89, 0x00, 0x00, 0x1e, /* sll %r0, 30 */
- /* Add %r0 to itself. Result will be nonzero iff CC bit 0 is set, and
- will have carry iff CC bit 1 is set - resulting in the same flags
- as the original. */
- 0x1e, 0x00, /* alr %r0, %r0 */
- 0x9a, 0x0f, 0xf2, 0x80, /* lam %a0, %a15, 0x280(%r15) */
-};
-
-/* Code sequence restoring GPRs, for 31-bit targets with no high GPRs. */
-
-static const unsigned char s390_ft_exit_gpr_esa[] = {
- 0x58, 0x00, 0xf2, 0x04, /* l %r0, 0x204(%r15) */
- 0x58, 0x10, 0xf2, 0x0c, /* l %r1, 0x20c(%r15) */
- 0x58, 0x20, 0xf2, 0x14, /* l %r2, 0x214(%r15) */
- 0x58, 0x30, 0xf2, 0x1c, /* l %r3, 0x21c(%r15) */
- 0x58, 0x40, 0xf2, 0x24, /* l %r4, 0x224(%r15) */
- 0x58, 0x50, 0xf2, 0x2c, /* l %r5, 0x22c(%r15) */
- 0x58, 0x60, 0xf2, 0x34, /* l %r6, 0x234(%r15) */
- 0x58, 0x70, 0xf2, 0x3c, /* l %r7, 0x23c(%r15) */
- 0x58, 0x80, 0xf2, 0x44, /* l %r8, 0x244(%r15) */
- 0x58, 0x90, 0xf2, 0x4c, /* l %r9, 0x24c(%r15) */
- 0x58, 0xa0, 0xf2, 0x54, /* l %r10, 0x254(%r15) */
- 0x58, 0xb0, 0xf2, 0x5c, /* l %r11, 0x25c(%r15) */
- 0x58, 0xc0, 0xf2, 0x64, /* l %r12, 0x264(%r15) */
- 0x58, 0xd0, 0xf2, 0x6c, /* l %r13, 0x26c(%r15) */
- 0x58, 0xe0, 0xf2, 0x74, /* l %r14, 0x274(%r15) */
- 0x58, 0xf0, 0xf2, 0x7c, /* l %r15, 0x27c(%r15) */
-};
-
-/* Code sequence restoring GPRs, for 64-bit targets and 31-bit targets
- with high GPRs. */
-
-static const unsigned char s390_ft_exit_gpr_zarch[] = {
- 0xeb, 0x0f, 0xf2, 0x00, 0x00, 0x04, /* lmg %r0, %r15, 0x200(%r15) */
-};
-
-/* Writes instructions to target, updating the to pointer. */
-
-static void
-append_insns (CORE_ADDR *to, size_t len, const unsigned char *buf)
-{
- target_write_memory (*to, buf, len);
- *to += len;
-}
-
-/* Relocates an instruction from oldloc to *to, updating to. */
-
-static int
-s390_relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc, int is_64)
-{
- gdb_byte buf[6];
- int ilen;
- int op2;
- /* 0: no fixup, 1: PC16DBL fixup, 2: PC32DBL fixup. */
- int mode = 0;
- int is_bras = 0;
- read_inferior_memory (oldloc, buf, sizeof buf);
- if (buf[0] < 0x40)
- ilen = 2;
- else if (buf[0] < 0xc0)
- ilen = 4;
- else
- ilen = 6;
- switch (buf[0])
- {
- case 0x05: /* BALR */
- case 0x0c: /* BASSM */
- case 0x0d: /* BASR */
- case 0x45: /* BAL */
- case 0x4d: /* BAS */
- /* These save a return address and mess around with registers.
- We can't relocate them. */
- return 1;
- case 0x84: /* BRXH */
- case 0x85: /* BRXLE */
- mode = 1;
- break;
- case 0xa7:
- op2 = buf[1] & 0xf;
- /* BRC, BRAS, BRCT, BRCTG */
- if (op2 >= 4 && op2 <= 7)
- mode = 1;
- /* BRAS */
- if (op2 == 5)
- is_bras = 1;
- break;
- case 0xc0:
- op2 = buf[1] & 0xf;
- /* LARL, BRCL, BRASL */
- if (op2 == 0 || op2 == 4 || op2 == 5)
- mode = 2;
- /* BRASL */
- if (op2 == 5)
- is_bras = 1;
- break;
- case 0xc4:
- case 0xc6:
- /* PC-relative addressing instructions. */
- mode = 2;
- break;
- case 0xc5: /* BPRP */
- case 0xc7: /* BPP */
- /* Branch prediction - just skip it. */
- return 0;
- case 0xcc:
- op2 = buf[1] & 0xf;
- /* BRCTH */
- if (op2 == 6)
- mode = 2;
- break;
- case 0xec:
- op2 = buf[5];
- switch (op2)
- {
- case 0x44: /* BRXHG */
- case 0x45: /* BRXLG */
- case 0x64: /* CGRJ */
- case 0x65: /* CLGRJ */
- case 0x76: /* CRJ */
- case 0x77: /* CLRJ */
- mode = 1;
- break;
- }
- break;
- }
-
- if (mode != 0)
- {
- /* We'll have to relocate an instruction with a PC-relative field.
- First, compute the target. */
- int64_t loffset = 0;
- CORE_ADDR target;
- if (mode == 1)
- {
- int16_t soffset = 0;
- memcpy (&soffset, buf + 2, 2);
- loffset = soffset;
- }
- else if (mode == 2)
- {
- int32_t soffset = 0;
- memcpy (&soffset, buf + 2, 4);
- loffset = soffset;
- }
- target = oldloc + loffset * 2;
- if (!is_64)
- target &= 0x7fffffff;
-
- if (is_bras)
- {
- /* BRAS or BRASL was used. We cannot just relocate those, since
- they save the return address in a register. We can, however,
- replace them with a LARL+JG sequence. */
-
- /* Make the LARL. */
- int32_t soffset;
- buf[0] = 0xc0;
- buf[1] &= 0xf0;
- loffset = oldloc + ilen - *to;
- loffset >>= 1;
- soffset = loffset;
- if (soffset != loffset && is_64)
- return 1;
- memcpy (buf + 2, &soffset, 4);
- append_insns (to, 6, buf);
-
- /* Note: this is not fully correct. In 31-bit mode, LARL will write
- an address with the top bit 0, while BRAS/BRASL will write it
- with top bit 1. It should not matter much, since linux compilers
- use BR and not BSM to return from functions, but it could confuse
- some poor stack unwinder. */
-
- /* We'll now be writing a JG. */
- mode = 2;
- buf[0] = 0xc0;
- buf[1] = 0xf4;
- ilen = 6;
- }
-
- /* Compute the new offset and write it to the buffer. */
- loffset = target - *to;
- loffset >>= 1;
-
- if (mode == 1)
- {
- int16_t soffset = loffset;
- if (soffset != loffset)
- return 1;
- memcpy (buf + 2, &soffset, 2);
- }
- else if (mode == 2)
- {
- int32_t soffset = loffset;
- if (soffset != loffset && is_64)
- return 1;
- memcpy (buf + 2, &soffset, 4);
- }
- }
- append_insns (to, ilen, buf);
- return 0;
-}
-
-/* Implementation of linux_target_ops method
- "install_fast_tracepoint_jump_pad". */
-
-static int
-s390_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint,
- CORE_ADDR tpaddr,
- CORE_ADDR collector,
- CORE_ADDR lockaddr,
- ULONGEST orig_size,
- CORE_ADDR *jump_entry,
- CORE_ADDR *trampoline,
- ULONGEST *trampoline_size,
- unsigned char *jjump_pad_insn,
- ULONGEST *jjump_pad_insn_size,
- CORE_ADDR *adjusted_insn_addr,
- CORE_ADDR *adjusted_insn_addr_end,
- char *err)
-{
- int i;
- int64_t loffset;
- int32_t offset;
- unsigned char jbuf[6] = { 0xc0, 0xf4, 0, 0, 0, 0 }; /* jg ... */
- CORE_ADDR buildaddr = *jump_entry;
-#ifdef __s390x__
- struct regcache *regcache = get_thread_regcache (current_thread, 0);
- int is_64 = register_size (regcache->tdesc, 0) == 8;
- int is_zarch = is_64 || have_hwcap_s390_high_gprs;
- int has_vx = have_hwcap_s390_vx;
-#else
- int is_64 = 0, is_zarch = 0, has_vx = 0;
-#endif
- CORE_ADDR literals[4] = {
- tpaddr,
- tpoint,
- collector,
- lockaddr,
- };
-
- /* First, store the GPRs. */
- if (is_zarch)
- append_insns (&buildaddr, sizeof s390_ft_entry_gpr_zarch,
- s390_ft_entry_gpr_zarch);
- else
- append_insns (&buildaddr, sizeof s390_ft_entry_gpr_esa,
- s390_ft_entry_gpr_esa);
-
- /* Second, misc registers (ARs, PSWM, FPC). PSWA will be stored below. */
- append_insns (&buildaddr, sizeof s390_ft_entry_misc, s390_ft_entry_misc);
-
- /* Third, FRs or VRs. */
- if (has_vx)
- append_insns (&buildaddr, sizeof s390_ft_entry_vr, s390_ft_entry_vr);
- else
- append_insns (&buildaddr, sizeof s390_ft_entry_fr, s390_ft_entry_fr);
-
- /* Now, the main part of code - store PSWA, take lock, call collector,
- leave lock. First, we'll need to fetch 4 literals. */
- if (is_64) {
- unsigned char buf[] = {
- 0x07, 0x07, /* nopr %r7 */
- 0x07, 0x07, /* nopr %r7 */
- 0x07, 0x07, /* nopr %r7 */
- 0xa7, 0x15, 0x00, 0x12, /* bras %r1, .Lend */
- 0, 0, 0, 0, 0, 0, 0, 0, /* tpaddr */
- 0, 0, 0, 0, 0, 0, 0, 0, /* tpoint */
- 0, 0, 0, 0, 0, 0, 0, 0, /* collector */
- 0, 0, 0, 0, 0, 0, 0, 0, /* lockaddr */
- /* .Lend: */
- };
- /* Find the proper start place in buf, so that literals will be
- aligned. */
- int bufpos = (buildaddr + 2) & 7;
- /* Stuff the literals into the buffer. */
- for (i = 0; i < 4; i++) {
- uint64_t lit = literals[i];
- memcpy (&buf[sizeof buf - 32 + i * 8], &lit, 8);
- }
- append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos);
- append_insns (&buildaddr, sizeof s390_ft_main_64, s390_ft_main_64);
- } else {
- unsigned char buf[] = {
- 0x07, 0x07, /* nopr %r7 */
- 0xa7, 0x15, 0x00, 0x0a, /* bras %r1, .Lend */
- 0, 0, 0, 0, /* tpaddr */
- 0, 0, 0, 0, /* tpoint */
- 0, 0, 0, 0, /* collector */
- 0, 0, 0, 0, /* lockaddr */
- /* .Lend: */
- };
- /* Find the proper start place in buf, so that literals will be
- aligned. */
- int bufpos = (buildaddr + 2) & 3;
- /* First literal will be saved as the PSWA, make sure it has the high bit
- set. */
- literals[0] |= 0x80000000;
- /* Stuff the literals into the buffer. */
- for (i = 0; i < 4; i++) {
- uint32_t lit = literals[i];
- memcpy (&buf[sizeof buf - 16 + i * 4], &lit, 4);
- }
- append_insns (&buildaddr, sizeof buf - bufpos, buf + bufpos);
- append_insns (&buildaddr, sizeof s390_ft_main_31, s390_ft_main_31);
- }
-
- /* Restore FRs or VRs. */
- if (has_vx)
- append_insns (&buildaddr, sizeof s390_ft_exit_vr, s390_ft_exit_vr);
- else
- append_insns (&buildaddr, sizeof s390_ft_exit_fr, s390_ft_exit_fr);
-
- /* Restore misc registers. */
- append_insns (&buildaddr, sizeof s390_ft_exit_misc, s390_ft_exit_misc);
-
- /* Restore the GPRs. */
- if (is_zarch)
- append_insns (&buildaddr, sizeof s390_ft_exit_gpr_zarch,
- s390_ft_exit_gpr_zarch);
- else
- append_insns (&buildaddr, sizeof s390_ft_exit_gpr_esa,
- s390_ft_exit_gpr_esa);
-
- /* Now, adjust the original instruction to execute in the jump
- pad. */
- *adjusted_insn_addr = buildaddr;
- if (s390_relocate_instruction (&buildaddr, tpaddr, is_64))
- {
- sprintf (err, "E.Could not relocate instruction for tracepoint.");
- return 1;
- }
- *adjusted_insn_addr_end = buildaddr;
-
- /* Finally, write a jump back to the program. */
-
- loffset = (tpaddr + orig_size) - buildaddr;
- loffset >>= 1;
- offset = loffset;
- if (is_64 && offset != loffset)
- {
- sprintf (err,
- "E.Jump back from jump pad too far from tracepoint "
- "(offset 0x%" PRIx64 " > int33).", loffset);
- return 1;
- }
- memcpy (jbuf + 2, &offset, 4);
- append_insns (&buildaddr, sizeof jbuf, jbuf);
-
- /* The jump pad is now built. Wire in a jump to our jump pad. This
- is always done last (by our caller actually), so that we can
- install fast tracepoints with threads running. This relies on
- the agent's atomic write support. */
- loffset = *jump_entry - tpaddr;
- loffset >>= 1;
- offset = loffset;
- if (is_64 && offset != loffset)
- {
- sprintf (err,
- "E.Jump back from jump pad too far from tracepoint "
- "(offset 0x%" PRIx64 " > int33).", loffset);
- return 1;
- }
- memcpy (jbuf + 2, &offset, 4);
- memcpy (jjump_pad_insn, jbuf, sizeof jbuf);
- *jjump_pad_insn_size = sizeof jbuf;
-
- /* Return the end address of our pad. */
- *jump_entry = buildaddr;
-
- return 0;
-}
-
-/* Implementation of linux_target_ops method
- "get_min_fast_tracepoint_insn_len". */
-
-static int
-s390_get_min_fast_tracepoint_insn_len (void)
-{
- /* We only support using 6-byte jumps to reach the tracepoint code.
- If the tracepoint buffer were allocated sufficiently close (64kiB)
- to the executable code, and the traced instruction itself was close
- enough to the beginning, we could use 4-byte jumps, but this doesn't
- seem to be worth the effort. */
- return 6;
-}
-
-/* Implementation of linux_target_ops method "get_ipa_tdesc_idx". */
-
-static int
-s390_get_ipa_tdesc_idx (void)
-{
- struct regcache *regcache = get_thread_regcache (current_thread, 0);
- const struct target_desc *tdesc = regcache->tdesc;
-
-#ifdef __s390x__
- if (tdesc == tdesc_s390x_linux64)
- return S390_TDESC_64;
- if (tdesc == tdesc_s390x_linux64v1)
- return S390_TDESC_64V1;
- if (tdesc == tdesc_s390x_linux64v2)
- return S390_TDESC_64V2;
- if (tdesc == tdesc_s390x_te_linux64)
- return S390_TDESC_TE;
- if (tdesc == tdesc_s390x_vx_linux64)
- return S390_TDESC_VX;
- if (tdesc == tdesc_s390x_tevx_linux64)
- return S390_TDESC_TEVX;
- if (tdesc == tdesc_s390x_gs_linux64)
- return S390_TDESC_GS;
-#endif
-
- if (tdesc == tdesc_s390_linux32)
- return S390_TDESC_32;
- if (tdesc == tdesc_s390_linux32v1)
- return S390_TDESC_32V1;
- if (tdesc == tdesc_s390_linux32v2)
- return S390_TDESC_32V2;
- if (tdesc == tdesc_s390_linux64)
- return S390_TDESC_64;
- if (tdesc == tdesc_s390_linux64v1)
- return S390_TDESC_64V1;
- if (tdesc == tdesc_s390_linux64v2)
- return S390_TDESC_64V2;
- if (tdesc == tdesc_s390_te_linux64)
- return S390_TDESC_TE;
- if (tdesc == tdesc_s390_vx_linux64)
- return S390_TDESC_VX;
- if (tdesc == tdesc_s390_tevx_linux64)
- return S390_TDESC_TEVX;
- if (tdesc == tdesc_s390_gs_linux64)
- return S390_TDESC_GS;
-
- return 0;
-}
-
-/* Appends given buffer to current_insn_ptr in the target. */
-
-static void
-add_insns (const unsigned char *start, int len)
-{
- CORE_ADDR buildaddr = current_insn_ptr;
-
- if (debug_threads)
- debug_printf ("Adding %d bytes of insn at %s\n",
- len, paddress (buildaddr));
-
- append_insns (&buildaddr, len, start);
- current_insn_ptr = buildaddr;
-}
-
-/* Register usage in emit:
-
- - %r0, %r1: temp
- - %r2: top of stack (high word for 31-bit)
- - %r3: low word of top of stack (for 31-bit)
- - %r4, %r5: temp
- - %r6, %r7, %r8: don't use
- - %r9: saved arg1
- - %r10: saved arg2
- - %r11: frame pointer
- - %r12: saved top of stack for void_call_2 (high word for 31-bit)
- - %r13: low word of saved top of stack (for 31-bit)
- - %r14: return address for calls
- - %r15: stack pointer
-
- */
-
-/* The "emit_prologue" emit_ops method for s390. */
-
-static void
-s390_emit_prologue (void)
-{
- static const unsigned char buf[] = {
- 0x90, 0x9f, 0xf0, 0x24, /* stm %r9, %r15, 0x24(%r15) */
- 0x18, 0x92, /* lr %r9, %r2 */
- 0x18, 0xa3, /* lr %r10, %r3 */
- 0x18, 0xbf, /* lr %r11, %r15 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_epilogue" emit_ops method for s390. */
-
-static void
-s390_emit_epilogue (void)
-{
- static const unsigned char buf[] = {
- 0x90, 0x23, 0xa0, 0x00, /* stm %r2, %r3, 0(%r10) */
- 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
- 0x98, 0x9f, 0xb0, 0x24, /* lm %r9, %r15, 0x24(%r11) */
- 0x07, 0xfe, /* br %r14 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_add" emit_ops method for s390. */
-
-static void
-s390_emit_add (void)
-{
- static const unsigned char buf[] = {
- 0x5e, 0x30, 0xf0, 0x04, /* al %r3, 4(%r15) */
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x98, /* al %r2, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_sub" emit_ops method for s390. */
-
-static void
-s390_emit_sub (void)
-{
- static const unsigned char buf[] = {
- 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */
- 0x1f, 0x53, /* slr %r5, %r3 */
- 0xb9, 0x99, 0x00, 0x42, /* slbr %r4, %r2 */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- 0x18, 0x35, /* lr %r3, %r5 */
- 0x18, 0x24, /* lr %r2, %r4 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_mul" emit_ops method for s390. */
-
-static void
-s390_emit_mul (void)
-{
- emit_error = 1;
-}
-
-/* The "emit_lsh" emit_ops method for s390. */
-
-static void
-s390_emit_lsh (void)
-{
- static const unsigned char buf[] = {
- 0x18, 0x43, /* lr %r4, %r3 */
- 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
- 0x8d, 0x20, 0x40, 0x00, /* sldl %r2, 0(%r4) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_rsh_signed" emit_ops method for s390. */
-
-static void
-s390_emit_rsh_signed (void)
-{
- static const unsigned char buf[] = {
- 0x18, 0x43, /* lr %r4, %r3 */
- 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
- 0x8e, 0x20, 0x40, 0x00, /* srda %r2, 0(%r4) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_rsh_unsigned" emit_ops method for s390. */
-
-static void
-s390_emit_rsh_unsigned (void)
-{
- static const unsigned char buf[] = {
- 0x18, 0x43, /* lr %r4, %r3 */
- 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
- 0x8c, 0x20, 0x40, 0x00, /* srdl %r2, 0(%r4) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_ext" emit_ops method for s390. */
-
-static void
-s390_emit_ext (int arg)
-{
- unsigned char buf[] = {
- 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */
- 0x8e, 0x20, 0x00, (unsigned char) (64 - arg), /* srda %r2, <64-arg> */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_log_not" emit_ops method for s390. */
-
-static void
-s390_emit_log_not (void)
-{
- static const unsigned char buf[] = {
- 0x16, 0x23, /* or %r2, %r3 */
- 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
- 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */
- 0xa7, 0x74, 0x00, 0x04, /* jne .Lskip */
- 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */
- /* .Lskip: */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_and" emit_ops method for s390. */
-
-static void
-s390_emit_bit_and (void)
-{
- static const unsigned char buf[] = {
- 0x54, 0x20, 0xf0, 0x00, /* n %r2, 0(%r15) */
- 0x54, 0x30, 0xf0, 0x04, /* n %r3, 4(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_or" emit_ops method for s390. */
-
-static void
-s390_emit_bit_or (void)
-{
- static const unsigned char buf[] = {
- 0x56, 0x20, 0xf0, 0x00, /* o %r2, 0(%r15) */
- 0x56, 0x30, 0xf0, 0x04, /* o %r3, 4(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_xor" emit_ops method for s390. */
-
-static void
-s390_emit_bit_xor (void)
-{
- static const unsigned char buf[] = {
- 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */
- 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_not" emit_ops method for s390. */
-
-static void
-s390_emit_bit_not (void)
-{
- static const unsigned char buf[] = {
- 0xa7, 0x48, 0xff, 0xff, /* lhi %r4, -1 */
- 0x17, 0x24, /* xr %r2, %r4 */
- 0x17, 0x34, /* xr %r3, %r4 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_equal" emit_ops method for s390. */
-
-static void
-s390_emit_equal (void)
-{
- s390_emit_bit_xor ();
- s390_emit_log_not ();
-}
-
-/* The "emit_less_signed" emit_ops method for s390. */
-
-static void
-s390_emit_less_signed (void)
-{
- static const unsigned char buf[] = {
- 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
- 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */
- 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */
- 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
- 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */
- /* .Lhigh: */
- 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */
- 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */
- /* .Lless: */
- 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */
- /* .Lend: */
- 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_less_unsigned" emit_ops method for s390. */
-
-static void
-s390_emit_less_unsigned (void)
-{
- static const unsigned char buf[] = {
- 0x55, 0x20, 0xf0, 0x00, /* cl %r2, 0(%r15) */
- 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */
- 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */
- 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
- 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */
- /* .Lhigh: */
- 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */
- 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */
- /* .Lless: */
- 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */
- /* .Lend: */
- 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_ref" emit_ops method for s390. */
-
-static void
-s390_emit_ref (int size)
-{
- static const unsigned char buf1[] = {
- 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
- 0x43, 0x30, 0x30, 0x00, /* ic %r3, 0(%r3) */
- };
- static const unsigned char buf2[] = {
- 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
- 0x48, 0x30, 0x30, 0x00, /* lh %r3, 0(%r3) */
- };
- static const unsigned char buf4[] = {
- 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
- 0x58, 0x30, 0x30, 0x00, /* l %r3, 0(%r3) */
- };
- static const unsigned char buf8[] = {
- 0x98, 0x23, 0x30, 0x00, /* lm %r2, %r3, 0(%r3) */
- };
- switch (size)
- {
- case 1:
- add_insns (buf1, sizeof buf1);
- break;
- case 2:
- add_insns (buf2, sizeof buf2);
- break;
- case 4:
- add_insns (buf4, sizeof buf4);
- break;
- case 8:
- add_insns (buf8, sizeof buf8);
- break;
- default:
- emit_error = 1;
- }
-}
-
-/* The "emit_if_goto" emit_ops method for s390. */
-
-static void
-s390_emit_if_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0x16, 0x23, /* or %r2, %r3 */
- 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00 /* jgne <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 12;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_goto" emit_ops method for s390 and s390x. */
-
-static void
-s390_emit_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 2;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "write_goto_address" emit_ops method for s390 and s390x. */
-
-static void
-s390_write_goto_address (CORE_ADDR from, CORE_ADDR to, int size)
-{
- long diff = ((long) (to - (from - 2))) / 2;
- int sdiff = diff;
- unsigned char buf[sizeof sdiff];
-
- /* We're only doing 4-byte sizes at the moment. */
- if (size != sizeof sdiff || sdiff != diff)
- {
- emit_error = 1;
- return;
- }
-
- memcpy (buf, &sdiff, sizeof sdiff);
- target_write_memory (from, buf, sizeof sdiff);
-}
-
-/* Preparation for emitting a literal pool of given size. Loads the address
- of the pool into %r1, and jumps over it. Called should emit the pool data
- immediately afterwards. Used for both s390 and s390x. */
-
-static void
-s390_emit_litpool (int size)
-{
- static const unsigned char nop[] = {
- 0x07, 0x07,
- };
- unsigned char buf[] = {
- 0xa7, 0x15, 0x00,
- (unsigned char) ((size + 4) / 2), /* bras %r1, .Lend+size */
- /* .Lend: */
- };
- if (size == 4)
- {
- /* buf needs to start at even halfword for litpool to be aligned */
- if (current_insn_ptr & 2)
- add_insns (nop, sizeof nop);
- }
- else
- {
- while ((current_insn_ptr & 6) != 4)
- add_insns (nop, sizeof nop);
- }
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_const" emit_ops method for s390. */
-
-static void
-s390_emit_const (LONGEST num)
-{
- unsigned long long n = num;
- unsigned char buf_s[] = {
- /* lhi %r3, <num> */
- 0xa7, 0x38,
- (unsigned char) (num >> 8), (unsigned char) num,
- /* xr %r2, %r2 */
- 0x17, 0x22,
- };
- static const unsigned char buf_l[] = {
- 0x98, 0x23, 0x10, 0x00, /* lm %r2, %r3, 0(%r1) */
- };
- if (num < 0x8000 && num >= 0)
- {
- add_insns (buf_s, sizeof buf_s);
- }
- else
- {
- s390_emit_litpool (8);
- add_insns ((unsigned char *) &n, sizeof n);
- add_insns (buf_l, sizeof buf_l);
- }
-}
-
-/* The "emit_call" emit_ops method for s390. */
-
-static void
-s390_emit_call (CORE_ADDR fn)
-{
- unsigned int n = fn;
- static const unsigned char buf[] = {
- 0x58, 0x10, 0x10, 0x00, /* l %r1, 0(%r1) */
- 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */
- 0x0d, 0xe1, /* basr %r14, %r1 */
- 0xa7, 0xfa, 0x00, 0x60, /* ahi %r15, 0x60 */
- };
- s390_emit_litpool (4);
- add_insns ((unsigned char *) &n, sizeof n);
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_reg" emit_ops method for s390. */
-
-static void
-s390_emit_reg (int reg)
-{
- unsigned char bufpre[] = {
- /* lr %r2, %r9 */
- 0x18, 0x29,
- /* lhi %r3, <reg> */
- 0xa7, 0x38, (unsigned char) (reg >> 8), (unsigned char) reg,
- };
- add_insns (bufpre, sizeof bufpre);
- s390_emit_call (get_raw_reg_func_addr ());
-}
-
-/* The "emit_pop" emit_ops method for s390. */
-
-static void
-s390_emit_pop (void)
-{
- static const unsigned char buf[] = {
- 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_stack_flush" emit_ops method for s390. */
-
-static void
-s390_emit_stack_flush (void)
-{
- static const unsigned char buf[] = {
- 0xa7, 0xfa, 0xff, 0xf8, /* ahi %r15, -8 */
- 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_zero_ext" emit_ops method for s390. */
-
-static void
-s390_emit_zero_ext (int arg)
-{
- unsigned char buf[] = {
- 0x8d, 0x20, 0x00, (unsigned char) (64 - arg), /* sldl %r2, <64-arg> */
- 0x8c, 0x20, 0x00, (unsigned char) (64 - arg), /* srdl %r2, <64-arg> */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_swap" emit_ops method for s390. */
-
-static void
-s390_emit_swap (void)
-{
- static const unsigned char buf[] = {
- 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */
- 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */
- 0x18, 0x24, /* lr %r2, %r4 */
- 0x18, 0x35, /* lr %r3, %r5 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_stack_adjust" emit_ops method for s390. */
-
-static void
-s390_emit_stack_adjust (int n)
-{
- unsigned char buf[] = {
- /* ahi %r15, 8*n */
- 0xa7, 0xfa,
- (unsigned char ) (n * 8 >> 8), (unsigned char) (n * 8),
- };
- add_insns (buf, sizeof buf);
-}
-
-/* Sets %r2 to a 32-bit constant. */
-
-static void
-s390_emit_set_r2 (int arg1)
-{
- unsigned char buf_s[] = {
- /* lhi %r2, <arg1> */
- 0xa7, 0x28, (unsigned char) (arg1 >> 8), (unsigned char) arg1,
- };
- static const unsigned char buf_l[] = {
- 0x58, 0x20, 0x10, 0x00, /* l %r2, 0(%r1) */
- };
- if (arg1 < 0x8000 && arg1 >= -0x8000)
- {
- add_insns (buf_s, sizeof buf_s);
- }
- else
- {
- s390_emit_litpool (4);
- add_insns ((unsigned char *) &arg1, sizeof arg1);
- add_insns (buf_l, sizeof buf_l);
- }
-}
-
-/* The "emit_int_call_1" emit_ops method for s390. */
-
-static void
-s390_emit_int_call_1 (CORE_ADDR fn, int arg1)
-{
- /* FN's prototype is `LONGEST(*fn)(int)'. */
- s390_emit_set_r2 (arg1);
- s390_emit_call (fn);
-}
-
-/* The "emit_void_call_2" emit_ops method for s390. */
-
-static void
-s390_emit_void_call_2 (CORE_ADDR fn, int arg1)
-{
- /* FN's prototype is `void(*fn)(int,LONGEST)'. */
- static const unsigned char buf[] = {
- 0x18, 0xc2, /* lr %r12, %r2 */
- 0x18, 0xd3, /* lr %r13, %r3 */
- 0x18, 0x43, /* lr %r4, %r3 */
- 0x18, 0x32, /* lr %r3, %r2 */
- };
- static const unsigned char buf2[] = {
- 0x18, 0x2c, /* lr %r2, %r12 */
- 0x18, 0x3d, /* lr %r3, %r13 */
- };
- add_insns (buf, sizeof buf);
- s390_emit_set_r2 (arg1);
- s390_emit_call (fn);
- add_insns (buf2, sizeof buf2);
-}
-
-/* The "emit_eq_goto" emit_ops method for s390. */
-
-static void
-s390_emit_eq_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */
- 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */
- 0x16, 0x23, /* or %r2, %r3 */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 20;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_ne_goto" emit_ops method for s390. */
-
-static void
-s390_emit_ne_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */
- 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */
- 0x16, 0x23, /* or %r2, %r3 */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 20;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_lt_goto" emit_ops method for s390. */
-
-static void
-s390_emit_lt_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
- 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */
- 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */
- 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
- 0xa7, 0x24, 0x00, 0x08, /* jh .Ltrue */
- /* .Lfalse: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
- /* .Ltrue: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
- /* .Lend: */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 42;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_le_goto" emit_ops method for s390. */
-
-static void
-s390_emit_le_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
- 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */
- 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */
- 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
- 0xa7, 0xa4, 0x00, 0x08, /* jhe .Ltrue */
- /* .Lfalse: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
- /* .Ltrue: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
- /* .Lend: */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 42;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_gt_goto" emit_ops method for s390. */
-
-static void
-s390_emit_gt_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
- 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */
- 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */
- 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
- 0xa7, 0x44, 0x00, 0x08, /* jl .Ltrue */
- /* .Lfalse: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
- /* .Ltrue: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
- /* .Lend: */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 42;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_ge_goto" emit_ops method for s390. */
-
-static void
-s390_emit_ge_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
- 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */
- 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */
- 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
- 0xa7, 0xc4, 0x00, 0x08, /* jle .Ltrue */
- /* .Lfalse: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
- /* .Ltrue: */
- 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
- /* .Lend: */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 42;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_ops" structure for s390. Named _impl to avoid name
- collision with s390_emit_ops function. */
-
-static struct emit_ops s390_emit_ops_impl =
- {
- s390_emit_prologue,
- s390_emit_epilogue,
- s390_emit_add,
- s390_emit_sub,
- s390_emit_mul,
- s390_emit_lsh,
- s390_emit_rsh_signed,
- s390_emit_rsh_unsigned,
- s390_emit_ext,
- s390_emit_log_not,
- s390_emit_bit_and,
- s390_emit_bit_or,
- s390_emit_bit_xor,
- s390_emit_bit_not,
- s390_emit_equal,
- s390_emit_less_signed,
- s390_emit_less_unsigned,
- s390_emit_ref,
- s390_emit_if_goto,
- s390_emit_goto,
- s390_write_goto_address,
- s390_emit_const,
- s390_emit_call,
- s390_emit_reg,
- s390_emit_pop,
- s390_emit_stack_flush,
- s390_emit_zero_ext,
- s390_emit_swap,
- s390_emit_stack_adjust,
- s390_emit_int_call_1,
- s390_emit_void_call_2,
- s390_emit_eq_goto,
- s390_emit_ne_goto,
- s390_emit_lt_goto,
- s390_emit_le_goto,
- s390_emit_gt_goto,
- s390_emit_ge_goto
- };
-
-#ifdef __s390x__
-
-/* The "emit_prologue" emit_ops method for s390x. */
-
-static void
-s390x_emit_prologue (void)
-{
- static const unsigned char buf[] = {
- 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x24, /* stmg %r9, %r15, 0x48(%r15) */
- 0xb9, 0x04, 0x00, 0x92, /* lgr %r9, %r2 */
- 0xb9, 0x04, 0x00, 0xa3, /* lgr %r10, %r3 */
- 0xb9, 0x04, 0x00, 0xbf, /* lgr %r11, %r15 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_epilogue" emit_ops method for s390x. */
-
-static void
-s390x_emit_epilogue (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xa0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r10) */
- 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */
- 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x04, /* lmg %r9, %r15, 0x48(%r15) */
- 0x07, 0xfe, /* br %r14 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_add" emit_ops method for s390x. */
-
-static void
-s390x_emit_add (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x0a, /* alg %r2, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_sub" emit_ops method for s390x. */
-
-static void
-s390x_emit_sub (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
- 0xb9, 0x0b, 0x00, 0x32, /* slgr %r3, %r2 */
- 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_mul" emit_ops method for s390x. */
-
-static void
-s390x_emit_mul (void)
-{
- emit_error = 1;
-}
-
-/* The "emit_lsh" emit_ops method for s390x. */
-
-static void
-s390x_emit_lsh (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
- 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0d, /* sllg %r2, %r3, 0(%r2) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_rsh_signed" emit_ops method for s390x. */
-
-static void
-s390x_emit_rsh_signed (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
- 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0a, /* srag %r2, %r3, 0(%r2) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_rsh_unsigned" emit_ops method for s390x. */
-
-static void
-s390x_emit_rsh_unsigned (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
- 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0c, /* srlg %r2, %r3, 0(%r2) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_ext" emit_ops method for s390x. */
-
-static void
-s390x_emit_ext (int arg)
-{
- unsigned char buf[] = {
- /* sllg %r2, %r2, <64-arg> */
- 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d,
- /* srag %r2, %r2, <64-arg> */
- 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0a,
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_log_not" emit_ops method for s390x. */
-
-static void
-s390x_emit_log_not (void)
-{
- static const unsigned char buf[] = {
- 0xb9, 0x00, 0x00, 0x22, /* lpgr %r2, %r2 */
- 0xa7, 0x2b, 0xff, 0xff, /* aghi %r2, -1 */
- 0xeb, 0x22, 0x00, 0x3f, 0x00, 0x0c, /* srlg %r2, %r2, 63 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_and" emit_ops method for s390x. */
-
-static void
-s390x_emit_bit_and (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x80, /* ng %r2, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_or" emit_ops method for s390x. */
-
-static void
-s390x_emit_bit_or (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x81, /* og %r2, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_xor" emit_ops method for s390x. */
-
-static void
-s390x_emit_bit_xor (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x82, /* xg %r2, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_bit_not" emit_ops method for s390x. */
-
-static void
-s390x_emit_bit_not (void)
-{
- static const unsigned char buf[] = {
- 0xa7, 0x39, 0xff, 0xff, /* lghi %r3, -1 */
- 0xb9, 0x82, 0x00, 0x23, /* xgr %r2, %r3 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_equal" emit_ops method for s390x. */
-
-static void
-s390x_emit_equal (void)
-{
- s390x_emit_bit_xor ();
- s390x_emit_log_not ();
-}
-
-/* The "emit_less_signed" emit_ops method for s390x. */
-
-static void
-s390x_emit_less_signed (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
- 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */
- 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */
- 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */
- /* .Lend: */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_less_unsigned" emit_ops method for s390x. */
-
-static void
-s390x_emit_less_unsigned (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x21, /* clg %r2, 0(%r15) */
- 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */
- 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */
- 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */
- /* .Lend: */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_ref" emit_ops method for s390x. */
-
-static void
-s390x_emit_ref (int size)
-{
- static const unsigned char buf1[] = {
- 0xe3, 0x20, 0x20, 0x00, 0x00, 0x90, /* llgc %r2, 0(%r2) */
- };
- static const unsigned char buf2[] = {
- 0xe3, 0x20, 0x20, 0x00, 0x00, 0x91 /* llgh %r2, 0(%r2) */
- };
- static const unsigned char buf4[] = {
- 0xe3, 0x20, 0x20, 0x00, 0x00, 0x16, /* llgf %r2, 0(%r2) */
- };
- static const unsigned char buf8[] = {
- 0xe3, 0x20, 0x20, 0x00, 0x00, 0x04, /* lg %r2, 0(%r2) */
- };
- switch (size)
- {
- case 1:
- add_insns (buf1, sizeof buf1);
- break;
- case 2:
- add_insns (buf2, sizeof buf2);
- break;
- case 4:
- add_insns (buf4, sizeof buf4);
- break;
- case 8:
- add_insns (buf8, sizeof buf8);
- break;
- default:
- emit_error = 1;
- }
-}
-
-/* The "emit_if_goto" emit_ops method for s390x. */
-
-static void
-s390x_emit_if_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xb9, 0x02, 0x00, 0x22, /* ltgr %r2, %r2 */
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 16;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_const" emit_ops method for s390x. */
-
-static void
-s390x_emit_const (LONGEST num)
-{
- unsigned long long n = num;
- unsigned char buf_s[] = {
- /* lghi %r2, <num> */
- 0xa7, 0x29, (unsigned char) (num >> 8), (unsigned char) num,
- };
- static const unsigned char buf_l[] = {
- 0xe3, 0x20, 0x10, 0x00, 0x00, 0x04, /* lg %r2, 0(%r1) */
- };
- if (num < 0x8000 && num >= -0x8000)
- {
- add_insns (buf_s, sizeof buf_s);
- }
- else
- {
- s390_emit_litpool (8);
- add_insns ((unsigned char *) &n, sizeof n);
- add_insns (buf_l, sizeof buf_l);
- }
-}
-
-/* The "emit_call" emit_ops method for s390x. */
-
-static void
-s390x_emit_call (CORE_ADDR fn)
-{
- unsigned long n = fn;
- static const unsigned char buf[] = {
- 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1, 0(%r1) */
- 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */
- 0x0d, 0xe1, /* basr %r14, %r1 */
- 0xa7, 0xfb, 0x00, 0xa0, /* aghi %r15, 0xa0 */
- };
- s390_emit_litpool (8);
- add_insns ((unsigned char *) &n, sizeof n);
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_reg" emit_ops method for s390x. */
-
-static void
-s390x_emit_reg (int reg)
-{
- unsigned char buf[] = {
- /* lgr %r2, %r9 */
- 0xb9, 0x04, 0x00, 0x29,
- /* lghi %r3, <reg> */
- 0xa7, 0x39, (unsigned char) (reg >> 8), (unsigned char) reg,
- };
- add_insns (buf, sizeof buf);
- s390x_emit_call (get_raw_reg_func_addr ());
-}
-
-/* The "emit_pop" emit_ops method for s390x. */
-
-static void
-s390x_emit_pop (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */
- 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_stack_flush" emit_ops method for s390x. */
-
-static void
-s390x_emit_stack_flush (void)
-{
- static const unsigned char buf[] = {
- 0xa7, 0xfb, 0xff, 0xf8, /* aghi %r15, -8 */
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_zero_ext" emit_ops method for s390x. */
-
-static void
-s390x_emit_zero_ext (int arg)
-{
- unsigned char buf[] = {
- /* sllg %r2, %r2, <64-arg> */
- 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0d,
- /* srlg %r2, %r2, <64-arg> */
- 0xeb, 0x22, 0x00, (unsigned char) (64 - arg), 0x00, 0x0c,
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_swap" emit_ops method for s390x. */
-
-static void
-s390x_emit_swap (void)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */
- 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_stack_adjust" emit_ops method for s390x. */
-
-static void
-s390x_emit_stack_adjust (int n)
-{
- unsigned char buf[] = {
- /* aghi %r15, 8*n */
- 0xa7, 0xfb,
- (unsigned char) (n * 8 >> 8), (unsigned char) (n * 8),
- };
- add_insns (buf, sizeof buf);
-}
-
-/* The "emit_int_call_1" emit_ops method for s390x. */
-
-static void
-s390x_emit_int_call_1 (CORE_ADDR fn, int arg1)
-{
- /* FN's prototype is `LONGEST(*fn)(int)'. */
- s390x_emit_const (arg1);
- s390x_emit_call (fn);
-}
-
-/* The "emit_void_call_2" emit_ops method for s390x. */
-
-static void
-s390x_emit_void_call_2 (CORE_ADDR fn, int arg1)
-{
- /* FN's prototype is `void(*fn)(int,LONGEST)'. */
- static const unsigned char buf[] = {
- 0xb9, 0x04, 0x00, 0x32, /* lgr %r3, %r2 */
- 0xb9, 0x04, 0x00, 0xc2, /* lgr %r12, %r2 */
- };
- static const unsigned char buf2[] = {
- 0xb9, 0x04, 0x00, 0x2c, /* lgr %r2, %r12 */
- };
- add_insns (buf, sizeof buf);
- s390x_emit_const (arg1);
- s390x_emit_call (fn);
- add_insns (buf2, sizeof buf2);
-}
-
-/* The "emit_eq_goto" emit_ops method for s390x. */
-
-static void
-s390x_emit_eq_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
- 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 18;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_ne_goto" emit_ops method for s390x. */
-
-static void
-s390x_emit_ne_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
- 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 18;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_lt_goto" emit_ops method for s390x. */
-
-static void
-s390x_emit_lt_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
- 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0x24, 0x00, 0x00, 0x00, 0x00, /* jgh <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 18;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_le_goto" emit_ops method for s390x. */
-
-static void
-s390x_emit_le_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
- 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0xa4, 0x00, 0x00, 0x00, 0x00, /* jghe <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 18;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_gt_goto" emit_ops method for s390x. */
-
-static void
-s390x_emit_gt_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
- 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0x44, 0x00, 0x00, 0x00, 0x00, /* jgl <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 18;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_ge_goto" emit_ops method for s390x. */
-
-static void
-s390x_emit_ge_goto (int *offset_p, int *size_p)
-{
- static const unsigned char buf[] = {
- 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
- 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
- 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
- 0xc0, 0xc4, 0x00, 0x00, 0x00, 0x00, /* jgle <fillme> */
- };
- add_insns (buf, sizeof buf);
- if (offset_p)
- *offset_p = 18;
- if (size_p)
- *size_p = 4;
-}
-
-/* The "emit_ops" structure for s390x. */
-
-static struct emit_ops s390x_emit_ops =
- {
- s390x_emit_prologue,
- s390x_emit_epilogue,
- s390x_emit_add,
- s390x_emit_sub,
- s390x_emit_mul,
- s390x_emit_lsh,
- s390x_emit_rsh_signed,
- s390x_emit_rsh_unsigned,
- s390x_emit_ext,
- s390x_emit_log_not,
- s390x_emit_bit_and,
- s390x_emit_bit_or,
- s390x_emit_bit_xor,
- s390x_emit_bit_not,
- s390x_emit_equal,
- s390x_emit_less_signed,
- s390x_emit_less_unsigned,
- s390x_emit_ref,
- s390x_emit_if_goto,
- s390_emit_goto,
- s390_write_goto_address,
- s390x_emit_const,
- s390x_emit_call,
- s390x_emit_reg,
- s390x_emit_pop,
- s390x_emit_stack_flush,
- s390x_emit_zero_ext,
- s390x_emit_swap,
- s390x_emit_stack_adjust,
- s390x_emit_int_call_1,
- s390x_emit_void_call_2,
- s390x_emit_eq_goto,
- s390x_emit_ne_goto,
- s390x_emit_lt_goto,
- s390x_emit_le_goto,
- s390x_emit_gt_goto,
- s390x_emit_ge_goto
- };
-#endif
-
-/* The "emit_ops" linux_target_ops method. */
-
-static struct emit_ops *
-s390_emit_ops (void)
-{
-#ifdef __s390x__
- struct regcache *regcache = get_thread_regcache (current_thread, 0);
-
- if (register_size (regcache->tdesc, 0) == 8)
- return &s390x_emit_ops;
- else
-#endif
- return &s390_emit_ops_impl;
-}
-
-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, /* delete_process */
- NULL, /* new_thread */
- NULL, /* delete_thread */
- NULL, /* new_fork */
- NULL, /* prepare_to_resume */
- NULL, /* process_qsupported */
- s390_supports_tracepoints,
- s390_get_thread_area,
- s390_install_fast_tracepoint_jump_pad,
- s390_emit_ops,
- s390_get_min_fast_tracepoint_insn_len,
- NULL, /* supports_range_stepping */
- NULL, /* breakpoint_kind_from_current_state */
- s390_supports_hardware_single_step,
- NULL, /* get_syscall_trapinfo */
- s390_get_ipa_tdesc_idx,
-};
-
-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_s390_gs_linux64 ();
-#ifdef __s390x__
- 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 ();
- init_registers_s390x_gs_linux64 ();
-#endif
-
- initialize_regsets_info (&s390_regsets_info);
- initialize_regsets_info (&s390_regsets_info_3264);
-}
projects / thirdparty / binutils-gdb.git / blobdiff