s390: Split up s390-linux-tdep.c into two files

Currently all target dependent code for s390 is in one file,
s390-linux-tdep.c.  This includes code general for the architecture as
well as code specific for uses in GNU/Linux (user space).  Up until now
this was OK as GNU/Linux was the only supported OS.  In preparation to
support the new Linux kernel 'OS' split up the existing s390 code into a
general s390-tdep and a GNU/Linux-specific s390-linux-tdep.

Note: The record-replay feature will be moved in a separate patch.  This
is simply due to the fact that the combined patch would be too large for
the mailing list.  This requires setting the process_record hook during
OSABI init to keep the code bisectable.  The patch moving record-replay
cleans up this hack.

gdb/ChangeLog:

	* s390-linux-nat.c (s390-tdep.h): New include.
	* Makefile.in (ALL_TARGET_OBS): Add s390-tdep.o.
	(HFILES_NO_SRCDIR): Add s390-tdep.h.
	(ALLDEPFILES): Add s390-tdep.c.
	* configure.tgt (s390*-*-linux*): Add s390-tdep.o.
	* s390-linux-tdep.h (HWCAP_S390_*, S390_*_REGNUM): Move to...
	* s390-tdep.h: ...this.  New file.
	* s390-linux-tdep.c (s390-tdep.h): New include.
	(_initialize_s390_tdep): Rename to...
	(_initialize_s390_linux_tdep): ...this and adjust.
	(s390_abi_kind, s390_vector_abi_kind, gdbarch_tdep)
	(enum named opcodes, S390_NUM_GPRS, S390_NUM_FPRS): Move to
	s390-tdep.h.
	(s390_break_insn, s390_breakpoint, s390_readinstruction, is_ri)
	(is_ril, is_rr, is_rre, is_rs, is_rsy, is_rx, is_rxy)
	(s390_is_partial_instruction, s390_software_single_step)
	(is_non_branch_ril, s390_displaced_step_copy_insn)
	(s390_displaced_step_fixup, s390_displaced_step_hw_singlestep)
	(s390_prologue_data, s390_addr, s390_store, s390_load)
	(s390_check_for_saved, s390_analyze_prologue, s390_skip_prologue)
	(s390_register_call_saved, s390_guess_tracepoint_registers)
	(s390_register_name, s390_dwarf_regmap, s390_dwarf_reg_to_regnum)
	(regnum_is_gpr_full, regnum_is_vxr_full, s390_value_from_register)
	(s390_pseudo_register_name, s390_pseudo_register_type)
	(s390_pseudo_register_read, s390_pseudo_register_write)
	(s390_pseudo_register_reggroup_p, s390_ax_pseudo_register_collect)
	(s390_ax_pseudo_register_push_stack, s390_gen_return_address)
	(s390_addr_bits_remove, s390_address_class_type_flags)
	(s390_address_class_type_flags_to_name)
	(s390_address_class_name_to_type_flags, s390_effective_inner_type)
	(s390_function_arg_float, s390_function_arg_vector)
	(is_power_of_two, s390_function_arg_integer, s390_arg_state)
	(s390_handle_arg, s390_push_dummy_call, s390_dummy_id)
	(s390_frame_align, s390_register_return_value, s390_return_value)
	(s390_stack_frame_destroyed_p, s390_unwind_pc, s390_unwind_sp)
	(s390_unwind_pseudo_register, s390_adjust_frame_regnum)
	(s390_dwarf2_prev_register, s390_dwarf2_frame_init_reg)
	(s390_trad_frame_prev_register, s390_unwind_cache)
	(s390_prologue_frame_unwind_cache)
	(s390_backchain_frame_unwind_cache, s390_frame_unwind_cache)
	(s390_frame_this_id, s390_frame_prev_register, s390_frame_unwind)
	(s390_stub_unwind_cache, s390_stub_frame_unwind_cache)
	(s390_stub_frame_this_id, s390_stub_frame_prev_register)
	(s390_stub_frame_sniffer, s390_stub_frame_unwind)
	(s390_frame_base_address, s390_local_base_address)
	(s390_frame_base, s390_gcc_target_options)
	(s390_gnu_triplet_regexp, s390_stap_is_single_operand)
	(s390_validate_reg_range, s390_tdesc_valid)
	(s390_gdbarch_tdep_alloc, s390_gdbarch_init): Move to...
	* s390-tdep.c: ...this.  New file.

1 files changed, 318 insertions, 0 deletions

diff --git a/gdb/s390-tdep.h b/gdb/s390-tdep.h
new file mode 100644
index 0000000..4a44da0
--- /dev/null
+++ b/gdb/s390-tdep.h
@@ -0,0 +1,318 @@
+/* Target-dependent code for s390.
+
+   Copyright (C) 2003-2018 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/>.  */
+
+#ifndef S390_TDEP_H
+#define S390_TDEP_H
+
+#include "prologue-value.h"
+
+enum s390_abi_kind
+{
+  ABI_NONE,
+  ABI_LINUX_S390,
+  ABI_LINUX_ZSERIES
+};
+
+enum s390_vector_abi_kind
+{
+  S390_VECTOR_ABI_NONE,
+  S390_VECTOR_ABI_128
+};
+
+/* The tdep structure.  */
+
+struct gdbarch_tdep
+{
+  /* Target description.  */
+  const struct target_desc *tdesc;
+
+  /* ABI version.  */
+  enum s390_abi_kind abi;
+
+  /* Vector ABI.  */
+  enum s390_vector_abi_kind vector_abi;
+
+  /* Pseudo register numbers.  */
+  int gpr_full_regnum;
+  int pc_regnum;
+  int cc_regnum;
+  int v0_full_regnum;
+
+  bool have_upper;
+  bool have_linux_v1;
+  bool have_linux_v2;
+  bool have_tdb;
+  bool have_vx;
+  bool have_gs;
+
+  /* Hook to record OS specific systemcall.  */
+  int (*s390_syscall_record) (struct regcache *regcache, LONGEST svc_number);
+};
+
+/* Decoding S/390 instructions.  */
+
+/* Named opcode values for the S/390 instructions we recognize.  Some
+   instructions have their opcode split across two fields; those are the
+   op1_* and op2_* enums.  */
+
+enum
+{
+  op1_lhi  = 0xa7,   op2_lhi  = 0x08,
+  op1_lghi = 0xa7,   op2_lghi = 0x09,
+  op1_lgfi = 0xc0,   op2_lgfi = 0x01,
+  op_lr    = 0x18,
+  op_lgr   = 0xb904,
+  op_l     = 0x58,
+  op1_ly   = 0xe3,   op2_ly   = 0x58,
+  op1_lg   = 0xe3,   op2_lg   = 0x04,
+  op_lm    = 0x98,
+  op1_lmy  = 0xeb,   op2_lmy  = 0x98,
+  op1_lmg  = 0xeb,   op2_lmg  = 0x04,
+  op_st    = 0x50,
+  op1_sty  = 0xe3,   op2_sty  = 0x50,
+  op1_stg  = 0xe3,   op2_stg  = 0x24,
+  op_std   = 0x60,
+  op_stm   = 0x90,
+  op1_stmy = 0xeb,   op2_stmy = 0x90,
+  op1_stmg = 0xeb,   op2_stmg = 0x24,
+  op1_aghi = 0xa7,   op2_aghi = 0x0b,
+  op1_ahi  = 0xa7,   op2_ahi  = 0x0a,
+  op1_agfi = 0xc2,   op2_agfi = 0x08,
+  op1_afi  = 0xc2,   op2_afi  = 0x09,
+  op1_algfi= 0xc2,   op2_algfi= 0x0a,
+  op1_alfi = 0xc2,   op2_alfi = 0x0b,
+  op_ar    = 0x1a,
+  op_agr   = 0xb908,
+  op_a     = 0x5a,
+  op1_ay   = 0xe3,   op2_ay   = 0x5a,
+  op1_ag   = 0xe3,   op2_ag   = 0x08,
+  op1_slgfi= 0xc2,   op2_slgfi= 0x04,
+  op1_slfi = 0xc2,   op2_slfi = 0x05,
+  op_sr    = 0x1b,
+  op_sgr   = 0xb909,
+  op_s     = 0x5b,
+  op1_sy   = 0xe3,   op2_sy   = 0x5b,
+  op1_sg   = 0xe3,   op2_sg   = 0x09,
+  op_nr    = 0x14,
+  op_ngr   = 0xb980,
+  op_la    = 0x41,
+  op1_lay  = 0xe3,   op2_lay  = 0x71,
+  op1_larl = 0xc0,   op2_larl = 0x00,
+  op_basr  = 0x0d,
+  op_bas   = 0x4d,
+  op_bcr   = 0x07,
+  op_bc    = 0x0d,
+  op_bctr  = 0x06,
+  op_bctgr = 0xb946,
+  op_bct   = 0x46,
+  op1_bctg = 0xe3,   op2_bctg = 0x46,
+  op_bxh   = 0x86,
+  op1_bxhg = 0xeb,   op2_bxhg = 0x44,
+  op_bxle  = 0x87,
+  op1_bxleg= 0xeb,   op2_bxleg= 0x45,
+  op1_bras = 0xa7,   op2_bras = 0x05,
+  op1_brasl= 0xc0,   op2_brasl= 0x05,
+  op1_brc  = 0xa7,   op2_brc  = 0x04,
+  op1_brcl = 0xc0,   op2_brcl = 0x04,
+  op1_brct = 0xa7,   op2_brct = 0x06,
+  op1_brctg= 0xa7,   op2_brctg= 0x07,
+  op_brxh  = 0x84,
+  op1_brxhg= 0xec,   op2_brxhg= 0x44,
+  op_brxle = 0x85,
+  op1_brxlg= 0xec,   op2_brxlg= 0x45,
+  op_svc   = 0x0a,
+};
+
+/* Hardware capabilities. */
+
+#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
+
+/* Register information.  */
+
+/* Program Status Word.  */
+#define S390_PSWM_REGNUM 0
+#define S390_PSWA_REGNUM 1
+/* General Purpose Registers.  */
+#define S390_R0_REGNUM 2
+#define S390_R1_REGNUM 3
+#define S390_R2_REGNUM 4
+#define S390_R3_REGNUM 5
+#define S390_R4_REGNUM 6
+#define S390_R5_REGNUM 7
+#define S390_R6_REGNUM 8
+#define S390_R7_REGNUM 9
+#define S390_R8_REGNUM 10
+#define S390_R9_REGNUM 11
+#define S390_R10_REGNUM 12
+#define S390_R11_REGNUM 13
+#define S390_R12_REGNUM 14
+#define S390_R13_REGNUM 15
+#define S390_R14_REGNUM 16
+#define S390_R15_REGNUM 17
+/* Access Registers.  */
+#define S390_A0_REGNUM 18
+#define S390_A1_REGNUM 19
+#define S390_A2_REGNUM 20
+#define S390_A3_REGNUM 21
+#define S390_A4_REGNUM 22
+#define S390_A5_REGNUM 23
+#define S390_A6_REGNUM 24
+#define S390_A7_REGNUM 25
+#define S390_A8_REGNUM 26
+#define S390_A9_REGNUM 27
+#define S390_A10_REGNUM 28
+#define S390_A11_REGNUM 29
+#define S390_A12_REGNUM 30
+#define S390_A13_REGNUM 31
+#define S390_A14_REGNUM 32
+#define S390_A15_REGNUM 33
+/* Floating Point Control Word.  */
+#define S390_FPC_REGNUM 34
+/* Floating Point Registers.  */
+#define S390_F0_REGNUM 35
+#define S390_F1_REGNUM 36
+#define S390_F2_REGNUM 37
+#define S390_F3_REGNUM 38
+#define S390_F4_REGNUM 39
+#define S390_F5_REGNUM 40
+#define S390_F6_REGNUM 41
+#define S390_F7_REGNUM 42
+#define S390_F8_REGNUM 43
+#define S390_F9_REGNUM 44
+#define S390_F10_REGNUM 45
+#define S390_F11_REGNUM 46
+#define S390_F12_REGNUM 47
+#define S390_F13_REGNUM 48
+#define S390_F14_REGNUM 49
+#define S390_F15_REGNUM 50
+/* General Purpose Register Upper Halves.  */
+#define S390_R0_UPPER_REGNUM 51
+#define S390_R1_UPPER_REGNUM 52
+#define S390_R2_UPPER_REGNUM 53
+#define S390_R3_UPPER_REGNUM 54
+#define S390_R4_UPPER_REGNUM 55
+#define S390_R5_UPPER_REGNUM 56
+#define S390_R6_UPPER_REGNUM 57
+#define S390_R7_UPPER_REGNUM 58
+#define S390_R8_UPPER_REGNUM 59
+#define S390_R9_UPPER_REGNUM 60
+#define S390_R10_UPPER_REGNUM 61
+#define S390_R11_UPPER_REGNUM 62
+#define S390_R12_UPPER_REGNUM 63
+#define S390_R13_UPPER_REGNUM 64
+#define S390_R14_UPPER_REGNUM 65
+#define S390_R15_UPPER_REGNUM 66
+/* GNU/Linux-specific optional registers.  */
+#define S390_ORIG_R2_REGNUM 67
+#define S390_LAST_BREAK_REGNUM 68
+#define S390_SYSTEM_CALL_REGNUM 69
+/* Transaction diagnostic block.  */
+#define S390_TDB_DWORD0_REGNUM 70
+#define S390_TDB_ABORT_CODE_REGNUM 71
+#define S390_TDB_CONFLICT_TOKEN_REGNUM 72
+#define S390_TDB_ATIA_REGNUM 73
+#define S390_TDB_R0_REGNUM 74
+#define S390_TDB_R1_REGNUM 75
+#define S390_TDB_R2_REGNUM 76
+#define S390_TDB_R3_REGNUM 77
+#define S390_TDB_R4_REGNUM 78
+#define S390_TDB_R5_REGNUM 79
+#define S390_TDB_R6_REGNUM 80
+#define S390_TDB_R7_REGNUM 81
+#define S390_TDB_R8_REGNUM 82
+#define S390_TDB_R9_REGNUM 83
+#define S390_TDB_R10_REGNUM 84
+#define S390_TDB_R11_REGNUM 85
+#define S390_TDB_R12_REGNUM 86
+#define S390_TDB_R13_REGNUM 87
+#define S390_TDB_R14_REGNUM 88
+#define S390_TDB_R15_REGNUM 89
+/* Vector registers.  */
+#define S390_V0_LOWER_REGNUM 90
+#define S390_V1_LOWER_REGNUM 91
+#define S390_V2_LOWER_REGNUM 92
+#define S390_V3_LOWER_REGNUM 93
+#define S390_V4_LOWER_REGNUM 94
+#define S390_V5_LOWER_REGNUM 95
+#define S390_V6_LOWER_REGNUM 96
+#define S390_V7_LOWER_REGNUM 97
+#define S390_V8_LOWER_REGNUM 98
+#define S390_V9_LOWER_REGNUM 99
+#define S390_V10_LOWER_REGNUM 100
+#define S390_V11_LOWER_REGNUM 101
+#define S390_V12_LOWER_REGNUM 102
+#define S390_V13_LOWER_REGNUM 103
+#define S390_V14_LOWER_REGNUM 104
+#define S390_V15_LOWER_REGNUM 105
+#define S390_V16_REGNUM 106
+#define S390_V17_REGNUM 107
+#define S390_V18_REGNUM 108
+#define S390_V19_REGNUM 109
+#define S390_V20_REGNUM 110
+#define S390_V21_REGNUM 111
+#define S390_V22_REGNUM 112
+#define S390_V23_REGNUM 113
+#define S390_V24_REGNUM 114
+#define S390_V25_REGNUM 115
+#define S390_V26_REGNUM 116
+#define S390_V27_REGNUM 117
+#define S390_V28_REGNUM 118
+#define S390_V29_REGNUM 119
+#define S390_V30_REGNUM 120
+#define S390_V31_REGNUM 121
+#define S390_GSD_REGNUM 122
+#define S390_GSSM_REGNUM 123
+#define S390_GSEPLA_REGNUM 124
+#define S390_BC_GSD_REGNUM 125
+#define S390_BC_GSSM_REGNUM 126
+#define S390_BC_GSEPLA_REGNUM 127
+/* Total.  */
+#define S390_NUM_REGS 128
+
+#define S390_NUM_GPRS 16
+#define S390_NUM_FPRS 16
+
+#define S390_MAX_INSTR_SIZE 6
+
+/* Special register usage.  */
+#define S390_SP_REGNUM S390_R15_REGNUM
+#define S390_RETADDR_REGNUM S390_R14_REGNUM
+#define S390_FRAME_REGNUM S390_R11_REGNUM
+
+/* Frame unwinding.  */
+
+extern struct value *s390_trad_frame_prev_register
+    (struct frame_info *this_frame, struct trad_frame_saved_reg saved_regs[],
+     int regnum);
+
+#endif /* S390_TDEP_H */