Add support for the GBZ80, Z180, and eZ80 variants of the Z80 architecure. Add an ELF based target for these as well.

	PR 25224
bfd	* Makefile.am: Add z80-elf target support.
	* configure.ac: Likewise.
	* targets.c: Likewise.
	* config.bfd: Add z80-elf target support and new arches: ez80 and z180.
	* elf32-z80.c: New file.
	* archures.c: Add new z80 architectures: eZ80 and Z180.
	* coffcode.h: Likewise.
	* cpu-z80.c: Likewise.
	* bfd-in2.h: Likewise plus additional Z80 relocations.
	* coff-z80.c: Add new relocations for Z80 target and local label check.

gas	* config/tc-z80.c: Add new architectures: Z180 and eZ80. Add support
	for assembler code generated by SDCC. Add new relocation types. Add
	z80-elf target support.
	* config/tc-z80.h: Add z80-elf target support. Enable dollar local
	labels. Local labels starts from ".L".
	* testsuite/gas/all/fwdexp.d: Fix failure due to symbol conflict.
	* testsuite/gas/all/fwdexp.s: Likewise.
	* testsuite/gas/z80/suffix.d: Fix failure on ELF target.
	* testsuite/gas/z80/z80.exp: Add new tests
	* testsuite/gas/z80/dollar.d: New file.
	* testsuite/gas/z80/dollar.s: New file.
	* testsuite/gas/z80/ez80_adl_all.d: New file.
	* testsuite/gas/z80/ez80_adl_all.s: New file.
	* testsuite/gas/z80/ez80_adl_suf.d: New file.
	* testsuite/gas/z80/ez80_isuf.s: New file.
	* testsuite/gas/z80/ez80_z80_all.d: New file.
	* testsuite/gas/z80/ez80_z80_all.s: New file.
	* testsuite/gas/z80/ez80_z80_suf.d: New file.
	* testsuite/gas/z80/r800_extra.d: New file.
	* testsuite/gas/z80/r800_extra.s: New file.
	* testsuite/gas/z80/r800_ii8.d: New file.
	* testsuite/gas/z80/r800_z80_doc.d: New file.
	* testsuite/gas/z80/z180.d: New file.
	* testsuite/gas/z80/z180.s: New file.
	* testsuite/gas/z80/z180_z80_doc.d: New file.
	* testsuite/gas/z80/z80_doc.d: New file.
	* testsuite/gas/z80/z80_doc.s: New file.
	* testsuite/gas/z80/z80_ii8.d: New file.
	* testsuite/gas/z80/z80_ii8.s: New file.
	* testsuite/gas/z80/z80_in_f_c.d: New file.
	* testsuite/gas/z80/z80_in_f_c.s: New file.
	* testsuite/gas/z80/z80_op_ii_ld.d: New file.
	* testsuite/gas/z80/z80_op_ii_ld.s: New file.
	* testsuite/gas/z80/z80_out_c_0.d: New file.
	* testsuite/gas/z80/z80_out_c_0.s: New file.
	* testsuite/gas/z80/z80_reloc.d: New file.
	* testsuite/gas/z80/z80_reloc.s: New file.
	* testsuite/gas/z80/z80_sli.d: New file.
	* testsuite/gas/z80/z80_sli.s: New file.

ld	* Makefile.am: Add new target z80-elf
	* configure.tgt: Likewise.
	* emultempl/z80.em: Add support for eZ80 and Z180 architectures.
	* emulparams/elf32z80.sh: New file.
	* emultempl/z80elf.em: Likewise.
	* testsuite/ld-z80/arch_ez80_adl.d: Likewise.
	* testsuite/ld-z80/arch_ez80_z80.d: Likewise.
	* testsuite/ld-z80/arch_r800.d: Likewise.
	* testsuite/ld-z80/arch_z180.d: Likewise.
	* testsuite/ld-z80/arch_z80.d: Likewise.
	* testsuite/ld-z80/comb_arch_ez80_z80.d: Likewise.
	* testsuite/ld-z80/comb_arch_z180.d: Likewise.
	* testsuite/ld-z80/labels.s: Likewise.
	* testsuite/ld-z80/relocs.s: Likewise.
	* testsuite/ld-z80/relocs_b_ez80.d: Likewise.
	* testsuite/ld-z80/relocs_b_z80.d: Likewise.
	* testsuite/ld-z80/relocs_f_z80.d: Likewise.
	* testsuite/ld-z80/z80.exp: Likewise.

opcodes	* z80-dis.c: Add support for eZ80 and Z80 instructions.

1 files changed, 380 insertions, 0 deletions

diff --git a/bfd/elf32-z80.c b/bfd/elf32-z80.c
new file mode 100644
index 0000000000..888606e7b5
--- /dev/null
+++ b/bfd/elf32-z80.c
@@ -0,0 +1,380 @@
+/* Zilog (e)Z80-specific support for 32-bit ELF
+   Copyright (C) 1999-2019 Free Software Foundation, Inc.
+   (Heavily copied from the S12Z port by Sergey Belyashov (sergey.belyashov@gmail.com))
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   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, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+
+#include "elf/z80.h"
+
+/* All users of this file have bfd_octets_per_byte (abfd, sec) == 1.  */
+#define OCTETS_PER_BYTE(ABFD, SEC) 1
+
+/* Relocation functions.  */
+static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
+  (bfd *, bfd_reloc_code_real_type);
+static bfd_boolean z80_info_to_howto_rel
+  (bfd *, arelent *, Elf_Internal_Rela *);
+
+typedef struct {
+  bfd_reloc_code_real_type r_type;
+  reloc_howto_type howto;
+} bfd_howto_type;
+
+#define BFD_EMPTY_HOWTO(rt,x) {rt, EMPTY_HOWTO(x)}
+#define BFD_HOWTO(rt,a,b,c,d,e,f,g,h,i,j,k,l,m) {rt, HOWTO(a,b,c,d,e,f,g,h,i,j,k,l,m)}
+
+static const
+bfd_howto_type elf_z80_howto_table[] =
+{
+  /* This reloc does nothing.  */
+  BFD_HOWTO (BFD_RELOC_NONE,
+	 R_Z80_NONE,		/* type */
+	 0,			/* rightshift */
+	 3,			/* size (0 = byte, 1 = short, 2 = long) */
+	 0,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_NONE",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* A 8 bit relocation */
+  BFD_HOWTO (BFD_RELOC_8,
+	 R_Z80_8,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 8,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_bitfield,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_imm8",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00,			/* src_mask */
+	 0xff,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* A 8 bit index register displacement relocation */
+  BFD_HOWTO (BFD_RELOC_Z80_DISP8,
+	 R_Z80_8_DIS,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 8,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_off",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00,			/* src_mask */
+	 0xff,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* A 8 bit PC-rel relocation */
+  BFD_HOWTO (BFD_RELOC_8_PCREL,
+	 R_Z80_8_PCREL,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 8,			/* bitsize */
+	 TRUE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_jr",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00,			/* src_mask */
+	 0xff,			/* dst_mask */
+	 TRUE),			/* pcrel_offset */
+
+  /* An 16 bit absolute relocation */
+  BFD_HOWTO (BFD_RELOC_16,
+	 R_Z80_16,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_bitfield,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_imm16",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x0000ffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* A 24 bit absolute relocation emitted by ADL mode operands */
+  BFD_HOWTO (BFD_RELOC_24,
+	 R_Z80_24,		/* type */
+	 0,			/* rightshift */
+	 5,			/* size (0 = byte, 1 = short, 2 = long) */
+	 24,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_bitfield,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_imm24",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x00ffffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  BFD_HOWTO (BFD_RELOC_32,
+	 R_Z80_32,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_imm32",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0xffffffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* First (lowest) 8 bits of multibyte relocation */
+  BFD_HOWTO (BFD_RELOC_Z80_BYTE0,
+	 R_Z80_BYTE0,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_byte0",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xff,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* Second 8 bits of multibyte relocation */
+  BFD_HOWTO (BFD_RELOC_Z80_BYTE1,
+	 R_Z80_BYTE1,		/* type */
+	 8,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_byte1",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xff,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* Third 8 bits of multibyte relocation */
+  BFD_HOWTO (BFD_RELOC_Z80_BYTE2,
+	 R_Z80_BYTE2,		/* type */
+	 16,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_byte2",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xff,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* Fourth (highest) 8 bits of multibyte relocation */
+  BFD_HOWTO (BFD_RELOC_Z80_BYTE3,
+	 R_Z80_BYTE3,		/* type */
+	 24,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_byte3",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xff,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* An 16 bit absolute relocation of lower word of multibyte value */
+  BFD_HOWTO (BFD_RELOC_Z80_WORD0,
+	 R_Z80_WORD0,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_word0",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* An 16 bit absolute relocation of higher word of multibyte value */
+  BFD_HOWTO (BFD_RELOC_Z80_WORD1,
+	 R_Z80_WORD1,		/* type */
+	 16,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "r_word1",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+};
+
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+                                 bfd_reloc_code_real_type code)
+{
+  enum
+    {
+      table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0])
+    };
+  unsigned int i;
+
+  for (i = 0; i < table_size; i++)
+    {
+      if (elf_z80_howto_table[i].r_type == code)
+          return &elf_z80_howto_table[i].howto;
+    }
+
+  printf ("%s:%d Not found type %d\n", __FILE__, __LINE__, code);
+
+  return NULL;
+}
+
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
+{
+  enum
+    {
+      table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0])
+    };
+  unsigned int i;
+
+  for (i = 0; i < table_size; i++)
+    {
+      if (elf_z80_howto_table[i].howto.name != NULL
+          && strcasecmp (elf_z80_howto_table[i].howto.name, r_name) == 0)
+        return &elf_z80_howto_table[i].howto;
+    }
+
+  return NULL;
+}
+
+/* Set the howto pointer for an z80 ELF reloc.  */
+
+static bfd_boolean
+z80_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
+{
+  enum
+    {
+      table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0])
+    };
+  unsigned int  i;
+  unsigned int  r_type = ELF32_R_TYPE (dst->r_info);
+
+  for (i = 0; i < table_size; i++)
+    {
+      if (elf_z80_howto_table[i].howto.type == r_type)
+        {
+          cache_ptr->howto = &elf_z80_howto_table[i].howto;
+          return TRUE;
+        }
+    }
+
+  /* xgettext:c-format */
+  _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+                      abfd, r_type);
+  bfd_set_error (bfd_error_bad_value);
+  return FALSE;
+}
+
+static bfd_boolean
+z80_elf_set_mach_from_flags (bfd *abfd)
+{
+  int mach;
+  switch (elf_elfheader (abfd)->e_flags)
+    {
+    case EF_Z80_MACH_GBZ80:
+      mach = bfd_mach_gbz80;
+      break;
+    case EF_Z80_MACH_Z80:
+      mach = bfd_mach_z80;
+      break;
+    case EF_Z80_MACH_Z180:
+      mach = bfd_mach_z180;
+      break;
+    case EF_Z80_MACH_EZ80_Z80:
+      mach = bfd_mach_ez80_z80;
+      break;
+    case EF_Z80_MACH_EZ80_ADL:
+      mach = bfd_mach_ez80_adl;
+      break;
+    case EF_Z80_MACH_R800:
+      mach = bfd_mach_r800;
+      break;
+    default:
+      mach = bfd_mach_z80;
+      break;
+    }
+
+  bfd_default_set_arch_mach (abfd, bfd_arch_z80, mach);
+  return TRUE;
+}
+
+static int
+z80_is_local_label_name (bfd *        abfd ATTRIBUTE_UNUSED,
+                         const char * name)
+{
+  return (name[0] == '.' && name[1] == 'L') ||
+         _bfd_elf_is_local_label_name (abfd, name);
+}
+
+
+#define ELF_ARCH		bfd_arch_z80
+#define ELF_MACHINE_CODE	EM_Z80
+#define ELF_MAXPAGESIZE		0x10000
+
+#define TARGET_LITTLE_SYM		z80_elf32_vec
+#define TARGET_LITTLE_NAME		"elf32-z80"
+
+#define elf_info_to_howto			NULL
+#define elf_info_to_howto_rel			z80_info_to_howto_rel
+#define elf_backend_object_p			z80_elf_set_mach_from_flags
+#define bfd_elf32_bfd_is_local_label_name	z80_is_local_label_name
+
+#include "elf32-target.h"