/* GNU/Linux S/390 specific low level interface, for the remote server
for GDB.
- Copyright (C) 2001-2016 Free Software Foundation, Inc.
+ Copyright (C) 2001-2020 Free Software Foundation, Inc.
This file is part of GDB.
#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
#define HWCAP_S390_VX 2048
#endif
-/* Defined in auto-generated file s390-linux32.c. */
-void init_registers_s390_linux32 (void);
-extern const struct target_desc *tdesc_s390_linux32;
-
-/* Defined in auto-generated file s390-linux32v1.c. */
-void init_registers_s390_linux32v1 (void);
-extern const struct target_desc *tdesc_s390_linux32v1;
-
-/* Defined in auto-generated file s390-linux32v2.c. */
-void init_registers_s390_linux32v2 (void);
-extern const struct target_desc *tdesc_s390_linux32v2;
-
-/* Defined in auto-generated file s390-linux64.c. */
-void init_registers_s390_linux64 (void);
-extern const struct target_desc *tdesc_s390_linux64;
-
-/* Defined in auto-generated file s390-linux64v1.c. */
-void init_registers_s390_linux64v1 (void);
-extern const struct target_desc *tdesc_s390_linux64v1;
-
-/* Defined in auto-generated file s390-linux64v2.c. */
-void init_registers_s390_linux64v2 (void);
-extern const struct target_desc *tdesc_s390_linux64v2;
-
-/* Defined in auto-generated file s390-te-linux64.c. */
-void init_registers_s390_te_linux64 (void);
-extern const struct target_desc *tdesc_s390_te_linux64;
-
-/* Defined in auto-generated file s390-vx-linux64.c. */
-void init_registers_s390_vx_linux64 (void);
-extern const struct target_desc *tdesc_s390_vx_linux64;
-
-/* Defined in auto-generated file s390-tevx-linux64.c. */
-void init_registers_s390_tevx_linux64 (void);
-extern const struct target_desc *tdesc_s390_tevx_linux64;
-
-/* Defined in auto-generated file s390x-linux64.c. */
-void init_registers_s390x_linux64 (void);
-extern const struct target_desc *tdesc_s390x_linux64;
-
-/* Defined in auto-generated file s390x-linux64v1.c. */
-void init_registers_s390x_linux64v1 (void);
-extern const struct target_desc *tdesc_s390x_linux64v1;
-
-/* Defined in auto-generated file s390x-linux64v2.c. */
-void init_registers_s390x_linux64v2 (void);
-extern const struct target_desc *tdesc_s390x_linux64v2;
-
-/* Defined in auto-generated file s390x-te-linux64.c. */
-void init_registers_s390x_te_linux64 (void);
-extern const struct target_desc *tdesc_s390x_te_linux64;
-
-/* Defined in auto-generated file s390x-vx-linux64.c. */
-void init_registers_s390x_vx_linux64 (void);
-extern const struct target_desc *tdesc_s390x_vx_linux64;
-
-/* Defined in auto-generated file s390x-tevx-linux64.c. */
-void init_registers_s390x_tevx_linux64 (void);
-extern const struct target_desc *tdesc_s390x_tevx_linux64;
+#ifndef HWCAP_S390_GS
+#define HWCAP_S390_GS 16384
+#endif
#define s390_num_regs 52
PT_ORIGGPR2,
};
-#ifdef __s390x__
#define s390_num_regs_3264 68
+#ifdef __s390x__
static int s390_regmap_3264[] = {
PT_PSWMASK, PT_PSWADDR,
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
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))
{
- const struct regs_info *regs_info = (*the_low_target.regs_info) ();
- struct usrregs_info *usr = regs_info->usrregs;
- int regaddr = usr->regmap[regno];
-
memset (buf, 0, sizeof (long));
if ((regno ^ 1) < usr->num_regs
{
/* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying
the basic addressing mode bit from the PSW address. */
- char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
+ 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;
else
collect_register (regcache, regno, buf);
}
- else
+ else if (regaddr != -1)
collect_register (regcache, regno, buf);
}
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))
{
- const struct regs_info *regs_info = (*the_low_target.regs_info) ();
- struct usrregs_info *usr = regs_info->usrregs;
- int regaddr = usr->regmap[regno];
-
if ((regno ^ 1) < usr->num_regs
&& usr->regmap[regno ^ 1] == regaddr)
{
{
/* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying
the basic addressing mode into the PSW address. */
- char *mask = alloca (size);
- char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
+ 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);
{
/* Convert 8-byte PSW address to 4 bytes by truncating, but
keeping the addressing mode bit (which was set from the mask). */
- char *addr = alloca (size);
+ gdb_byte *addr = (gdb_byte *) alloca (size);
char amode;
collect_register (regcache, regno, addr);
amode = addr[0] & 0x80;
else
supply_register (regcache, regno, buf);
}
- else
+ else if (regaddr != -1)
supply_register (regcache, regno, buf);
}
/* 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)
{
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 },
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
};
}
}
+/* Determine the word size for the given PID, in bytes. */
+
#ifdef __s390x__
-static unsigned long
-s390_get_hwcap (const struct target_desc *tdesc)
+static int
+s390_get_wordsize (int pid)
{
- int wordsize = register_size (tdesc, 0);
- unsigned char *data = alloca (2 * wordsize);
- int offset = 0;
-
- while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize)
+ errno = 0;
+ PTRACE_XFER_TYPE pswm = ptrace (PTRACE_PEEKUSER, pid,
+ (PTRACE_TYPE_ARG3) 0,
+ (PTRACE_TYPE_ARG4) 0);
+ if (errno != 0)
{
- if (wordsize == 4)
- {
- unsigned int *data_p = (unsigned int *)data;
- if (data_p[0] == AT_HWCAP)
- return data_p[1];
- }
- else
- {
- unsigned long *data_p = (unsigned long *)data;
- if (data_p[0] == AT_HWCAP)
- return data_p[1];
- }
-
- offset += 2 * wordsize;
+ warning (_("Couldn't determine word size, assuming 64-bit."));
+ return 8;
}
-
- return 0;
+ /* 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)
{
- gdb_byte *buf = alloca (regsize);
+ void *buf = alloca (regsize);
struct iovec iov;
iov.iov_base = buf;
return 0;
}
-#ifdef __s390x__
/* For a 31-bit inferior, whether the kernel supports using the full
64-bit GPRs. */
static int have_hwcap_s390_high_gprs = 0;
-#endif
+static int have_hwcap_s390_vx = 0;
static void
s390_arch_setup (void)
const struct target_desc *tdesc;
struct regset_info *regset;
- /* Check whether the kernel supports extra register sets. */
+ /* 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);
- int have_regset_vxrs = s390_check_regset (pid, NT_S390_VXRS_LOW, 128)
- && s390_check_regset (pid, NT_S390_VXRS_HIGH, 256);
-
- /* Assume 31-bit inferior process. */
- if (have_regset_system_call)
- tdesc = tdesc_s390_linux32v2;
- else if (have_regset_last_break)
- tdesc = tdesc_s390_linux32v1;
- else
- tdesc = tdesc_s390_linux32;
+ 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);
- /* On a 64-bit host, check the low bit of the (31-bit) PSWM
- -- if this is one, we actually have a 64-bit inferior. */
-#ifdef __s390x__
{
- unsigned int pswm;
- struct regcache *regcache = new_register_cache (tdesc);
-
- fetch_inferior_registers (regcache, find_regno (tdesc, "pswm"));
- collect_register_by_name (regcache, "pswm", &pswm);
- free_register_cache (regcache);
-
- if (pswm & 1)
+#ifdef __s390x__
+ if (wordsize == 8)
{
- if (have_regset_tdb)
- have_regset_tdb =
- (s390_get_hwcap (tdesc_s390x_linux64v2) & HWCAP_S390_TE) != 0;
- if (have_regset_vxrs)
- have_regset_vxrs =
- (s390_get_hwcap (tdesc_s390x_linux64v2) & HWCAP_S390_VX) != 0;
-
- if (have_regset_vxrs)
+ 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)
/* For a 31-bit inferior, check whether the kernel supports
using the full 64-bit GPRs. */
- else if (s390_get_hwcap (tdesc) & HWCAP_S390_HIGH_GPRS)
+ else
+#endif
+ if (hwcap & HWCAP_S390_HIGH_GPRS)
{
have_hwcap_s390_high_gprs = 1;
- if (have_regset_tdb)
- have_regset_tdb = (s390_get_hwcap (tdesc) & HWCAP_S390_TE) != 0;
- if (have_regset_vxrs)
- have_regset_vxrs = (s390_get_hwcap (tdesc) & HWCAP_S390_VX) != 0;
-
- if (have_regset_vxrs)
+ 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)
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;
}
-#endif
/* Update target_regsets according to available register sets. */
for (regset = s390_regsets; regset->size >= 0; regset++)
if (regset->get_request == PTRACE_GETREGSET)
switch (regset->nt_type)
{
+#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;
+ regset->size = have_regset_last_break ? 8 : 0;
break;
case NT_S390_SYSTEM_CALL:
- regset->size = have_regset_system_call? 4 : 0;
+ regset->size = have_regset_system_call ? 4 : 0;
break;
case NT_S390_TDB:
regset->size = have_regset_tdb ? 256 : 0;
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;
}
&s390_regsets_info
};
-#ifdef __s390x__
static struct usrregs_info s390_usrregs_info_3264 =
{
s390_num_regs_3264,
&s390_usrregs_info_3264,
&s390_regsets_info_3264
};
-#endif
static const struct regs_info *
s390_regs_info (void)
{
-#ifdef __s390x__
if (have_hwcap_s390_high_gprs)
{
+#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;
}
-struct linux_target_ops the_low_target = {
- s390_arch_setup,
- s390_regs_info,
- s390_cannot_fetch_register,
- s390_cannot_store_register,
- NULL, /* fetch_register */
- s390_get_pc,
- s390_set_pc,
- NULL, /* breakpoint_kind_from_pc */
- s390_sw_breakpoint_from_kind,
- NULL,
- s390_breakpoint_len,
- s390_breakpoint_at,
- s390_supports_z_point_type,
- NULL,
- NULL,
- NULL,
- NULL,
- s390_collect_ptrace_register,
- s390_supply_ptrace_register,
- NULL, /* siginfo_fixup */
- NULL, /* new_process */
- NULL, /* new_thread */
- NULL, /* new_fork */
- NULL, /* prepare_to_resume */
- NULL, /* process_qsupported */
- NULL, /* supports_tracepoints */
- NULL, /* get_thread_area */
- NULL, /* install_fast_tracepoint_jump_pad */
- NULL, /* emit_ops */
- NULL, /* get_min_fast_tracepoint_insn_len */
- NULL, /* supports_range_stepping */
- NULL, /* breakpoint_kind_from_current_state */
- s390_supports_hardware_single_step,
+/* 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) */
};
-void
-initialize_low_arch (void)
+/* 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)
{
- /* Initialize the Linux target descriptions. */
+ target_write_memory (*to, buf, len);
+ *to += len;
+}
- init_registers_s390_linux32 ();
- init_registers_s390_linux32v1 ();
- init_registers_s390_linux32v2 ();
- init_registers_s390_linux64 ();
- init_registers_s390_linux64v1 ();
- init_registers_s390_linux64v2 ();
- init_registers_s390_te_linux64 ();
- init_registers_s390_vx_linux64 ();
- init_registers_s390_tevx_linux64 ();
- init_registers_s390x_linux64 ();
- init_registers_s390x_linux64v1 ();
- init_registers_s390x_linux64v2 ();
- init_registers_s390x_te_linux64 ();
- init_registers_s390x_vx_linux64 ();
- init_registers_s390x_tevx_linux64 ();
+/* Relocates an instruction from oldloc to *to, updating to. */
- initialize_regsets_info (&s390_regsets_info);
+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__
- initialize_regsets_info (&s390_regsets_info_3264);
+ 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 / deliverable / binutils-gdb.git / blobdiff