sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 354 insertions, 0 deletions

diff --git a/support/sdbinutils/include/dis-asm.h b/support/sdbinutils/include/dis-asm.h
new file mode 100644
index 0000000..eebdaf8
--- /dev/null
+++ b/support/sdbinutils/include/dis-asm.h
@@ -0,0 +1,354 @@
+/* Interface between the opcode library and its callers.
+
+   Copyright (C) 1999-2018 Free Software Foundation, Inc.
+
+   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, 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.
+
+   Written by Cygnus Support, 1993.
+
+   The opcode library (libopcodes.a) provides instruction decoders for
+   a large variety of instruction sets, callable with an identical
+   interface, for making instruction-processing programs more independent
+   of the instruction set being processed.  */
+
+#ifndef DIS_ASM_H
+#define DIS_ASM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include "bfd.h"
+
+  typedef int (*fprintf_ftype) (void *, const char*, ...) ATTRIBUTE_FPTR_PRINTF_2;
+
+enum dis_insn_type
+{
+  dis_noninsn,			/* Not a valid instruction.  */
+  dis_nonbranch,		/* Not a branch instruction.  */
+  dis_branch,			/* Unconditional branch.  */
+  dis_condbranch,		/* Conditional branch.  */
+  dis_jsr,			/* Jump to subroutine.  */
+  dis_condjsr,			/* Conditional jump to subroutine.  */
+  dis_dref,			/* Data reference instruction.  */
+  dis_dref2			/* Two data references in instruction.  */
+};
+
+/* This struct is passed into the instruction decoding routine,
+   and is passed back out into each callback.  The various fields are used
+   for conveying information from your main routine into your callbacks,
+   for passing information into the instruction decoders (such as the
+   addresses of the callback functions), or for passing information
+   back from the instruction decoders to their callers.
+
+   It must be initialized before it is first passed; this can be done
+   by hand, or using one of the initialization macros below.  */
+
+typedef struct disassemble_info
+{
+  fprintf_ftype fprintf_func;
+  void *stream;
+  void *application_data;
+
+  /* Target description.  We could replace this with a pointer to the bfd,
+     but that would require one.  There currently isn't any such requirement
+     so to avoid introducing one we record these explicitly.  */
+  /* The bfd_flavour.  This can be bfd_target_unknown_flavour.  */
+  enum bfd_flavour flavour;
+  /* The bfd_arch value.  */
+  enum bfd_architecture arch;
+  /* The bfd_mach value.  */
+  unsigned long mach;
+  /* Endianness (for bi-endian cpus).  Mono-endian cpus can ignore this.  */
+  enum bfd_endian endian;
+  /* Endianness of code, for mixed-endian situations such as ARM BE8.  */
+  enum bfd_endian endian_code;
+  /* An arch/mach-specific bitmask of selected instruction subsets, mainly
+     for processors with run-time-switchable instruction sets.  The default,
+     zero, means that there is no constraint.  CGEN-based opcodes ports
+     may use ISA_foo masks.  */
+  void *insn_sets;
+
+  /* Some targets need information about the current section to accurately
+     display insns.  If this is NULL, the target disassembler function
+     will have to make its best guess.  */
+  asection *section;
+
+  /* An array of pointers to symbols either at the location being disassembled
+     or at the start of the function being disassembled.  The array is sorted
+     so that the first symbol is intended to be the one used.  The others are
+     present for any misc. purposes.  This is not set reliably, but if it is
+     not NULL, it is correct.  */
+  asymbol **symbols;
+  /* Number of symbols in array.  */
+  int num_symbols;
+
+  /* Symbol table provided for targets that want to look at it.  This is
+     used on Arm to find mapping symbols and determine Arm/Thumb code.  */
+  asymbol **symtab;
+  int symtab_pos;
+  int symtab_size;
+
+  /* For use by the disassembler.
+     The top 16 bits are reserved for public use (and are documented here).
+     The bottom 16 bits are for the internal use of the disassembler.  */
+  unsigned long flags;
+  /* Set if the disassembler has determined that there are one or more
+     relocations associated with the instruction being disassembled.  */
+#define INSN_HAS_RELOC	 (1 << 31)
+  /* Set if the user has requested the disassembly of data as well as code.  */
+#define DISASSEMBLE_DATA (1 << 30)
+  /* Set if the user has specifically set the machine type encoded in the
+     mach field of this structure.  */
+#define USER_SPECIFIED_MACHINE_TYPE (1 << 29)
+
+  /* Use internally by the target specific disassembly code.  */
+  void *private_data;
+
+  /* Function used to get bytes to disassemble.  MEMADDR is the
+     address of the stuff to be disassembled, MYADDR is the address to
+     put the bytes in, and LENGTH is the number of bytes to read.
+     INFO is a pointer to this struct.
+     Returns an errno value or 0 for success.  */
+  int (*read_memory_func)
+    (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
+     struct disassemble_info *dinfo);
+
+  /* Function which should be called if we get an error that we can't
+     recover from.  STATUS is the errno value from read_memory_func and
+     MEMADDR is the address that we were trying to read.  INFO is a
+     pointer to this struct.  */
+  void (*memory_error_func)
+    (int status, bfd_vma memaddr, struct disassemble_info *dinfo);
+
+  /* Function called to print ADDR.  */
+  void (*print_address_func)
+    (bfd_vma addr, struct disassemble_info *dinfo);
+
+  /* Function called to determine if there is a symbol at the given ADDR.
+     If there is, the function returns 1, otherwise it returns 0.
+     This is used by ports which support an overlay manager where
+     the overlay number is held in the top part of an address.  In
+     some circumstances we want to include the overlay number in the
+     address, (normally because there is a symbol associated with
+     that address), but sometimes we want to mask out the overlay bits.  */
+  int (* symbol_at_address_func)
+    (bfd_vma addr, struct disassemble_info *dinfo);
+
+  /* Function called to check if a SYMBOL is can be displayed to the user.
+     This is used by some ports that want to hide special symbols when
+     displaying debugging outout.  */
+  bfd_boolean (* symbol_is_valid)
+    (asymbol *, struct disassemble_info *dinfo);
+
+  /* These are for buffer_read_memory.  */
+  bfd_byte *buffer;
+  bfd_vma buffer_vma;
+  size_t buffer_length;
+
+  /* This variable may be set by the instruction decoder.  It suggests
+      the number of bytes objdump should display on a single line.  If
+      the instruction decoder sets this, it should always set it to
+      the same value in order to get reasonable looking output.  */
+  int bytes_per_line;
+
+  /* The next two variables control the way objdump displays the raw data.  */
+  /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
+  /* output will look like this:
+     00:   00000000 00000000
+     with the chunks displayed according to "display_endian". */
+  int bytes_per_chunk;
+  enum bfd_endian display_endian;
+
+  /* Number of octets per incremented target address
+     Normally one, but some DSPs have byte sizes of 16 or 32 bits.  */
+  unsigned int octets_per_byte;
+
+  /* The number of zeroes we want to see at the end of a section before we
+     start skipping them.  */
+  unsigned int skip_zeroes;
+
+  /* The number of zeroes to skip at the end of a section.  If the number
+     of zeroes at the end is between SKIP_ZEROES_AT_END and SKIP_ZEROES,
+     they will be disassembled.  If there are fewer than
+     SKIP_ZEROES_AT_END, they will be skipped.  This is a heuristic
+     attempt to avoid disassembling zeroes inserted by section
+     alignment.  */
+  unsigned int skip_zeroes_at_end;
+
+  /* Whether the disassembler always needs the relocations.  */
+  bfd_boolean disassembler_needs_relocs;
+
+  /* Results from instruction decoders.  Not all decoders yet support
+     this information.  This info is set each time an instruction is
+     decoded, and is only valid for the last such instruction.
+
+     To determine whether this decoder supports this information, set
+     insn_info_valid to 0, decode an instruction, then check it.  */
+
+  char insn_info_valid;		/* Branch info has been set. */
+  char branch_delay_insns;	/* How many sequential insn's will run before
+				   a branch takes effect.  (0 = normal) */
+  char data_size;		/* Size of data reference in insn, in bytes */
+  enum dis_insn_type insn_type;	/* Type of instruction */
+  bfd_vma target;		/* Target address of branch or dref, if known;
+				   zero if unknown.  */
+  bfd_vma target2;		/* Second target address for dref2 */
+
+  /* Command line options specific to the target disassembler.  */
+  const char *disassembler_options;
+
+  /* If non-zero then try not disassemble beyond this address, even if
+     there are values left in the buffer.  This address is the address
+     of the nearest symbol forwards from the start of the disassembly,
+     and it is assumed that it lies on the boundary between instructions.
+     If an instruction spans this address then this is an error in the
+     file being disassembled.  */
+  bfd_vma stop_vma;
+
+} disassemble_info;
+
+/* This struct is used to pass information about valid disassembler options
+   and their descriptions from the target to the generic GDB functions that
+   set and display them.  */
+
+typedef struct
+{
+  const char **name;
+  const char **description;
+} disasm_options_t;
+
+
+/* Standard disassemblers.  Disassemble one instruction at the given
+   target address.  Return number of octets processed.  */
+typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
+
+/* Disassemblers used out side of opcodes library.  */
+extern int print_insn_m32c		(bfd_vma, disassemble_info *);
+extern int print_insn_mep		(bfd_vma, disassemble_info *);
+extern int print_insn_sh		(bfd_vma, disassemble_info *);
+extern int print_insn_sh64x_media	(bfd_vma, disassemble_info *);
+extern int print_insn_sparc		(bfd_vma, disassemble_info *);
+extern int print_insn_rx		(bfd_vma, disassemble_info *);
+extern int print_insn_rl78		(bfd_vma, disassemble_info *);
+extern int print_insn_rl78_g10		(bfd_vma, disassemble_info *);
+extern int print_insn_rl78_g13		(bfd_vma, disassemble_info *);
+extern int print_insn_rl78_g14		(bfd_vma, disassemble_info *);
+
+extern disassembler_ftype arc_get_disassembler (bfd *);
+extern disassembler_ftype cris_get_disassembler (bfd *);
+
+extern void print_aarch64_disassembler_options (FILE *);
+extern void print_i386_disassembler_options (FILE *);
+extern void print_mips_disassembler_options (FILE *);
+extern void print_ppc_disassembler_options (FILE *);
+extern void print_riscv_disassembler_options (FILE *);
+extern void print_arm_disassembler_options (FILE *);
+extern void print_arc_disassembler_options (FILE *);
+extern void print_s390_disassembler_options (FILE *);
+extern void print_wasm32_disassembler_options (FILE *);
+extern bfd_boolean aarch64_symbol_is_valid (asymbol *, struct disassemble_info *);
+extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *);
+extern void disassemble_init_powerpc (struct disassemble_info *);
+extern void disassemble_init_s390 (struct disassemble_info *);
+extern void disassemble_init_wasm32 (struct disassemble_info *);
+extern const disasm_options_t *disassembler_options_powerpc (void);
+extern const disasm_options_t *disassembler_options_arm (void);
+extern const disasm_options_t *disassembler_options_s390 (void);
+
+/* Fetch the disassembler for a given architecture ARC, endianess (big
+   endian if BIG is true), bfd_mach value MACH, and ABFD, if that support
+   is available.  ABFD may be NULL.  */
+extern disassembler_ftype disassembler (enum bfd_architecture arc,
+					bfd_boolean big, unsigned long mach,
+					bfd *abfd);
+
+/* Amend the disassemble_info structure as necessary for the target architecture.
+   Should only be called after initialising the info->arch field.  */
+extern void disassemble_init_for_target (struct disassemble_info * dinfo);
+
+/* Document any target specific options available from the disassembler.  */
+extern void disassembler_usage (FILE *);
+
+/* Remove whitespace and consecutive commas.  */
+extern char *remove_whitespace_and_extra_commas (char *);
+
+/* Like STRCMP, but treat ',' the same as '\0' so that we match
+   strings like "foobar" against "foobar,xxyyzz,...".  */
+extern int disassembler_options_cmp (const char *, const char *);
+
+/* A helper function for FOR_EACH_DISASSEMBLER_OPTION.  */
+static inline const char *
+next_disassembler_option (const char *options)
+{
+  const char *opt = strchr (options, ',');
+  if (opt != NULL)
+    opt++;
+  return opt;
+}
+
+/* A macro for iterating over each comma separated option in OPTIONS.  */
+#define FOR_EACH_DISASSEMBLER_OPTION(OPT, OPTIONS) \
+  for ((OPT) = (OPTIONS); \
+       (OPT) != NULL; \
+       (OPT) = next_disassembler_option (OPT))
+
+
+/* This block of definitions is for particular callers who read instructions
+   into a buffer before calling the instruction decoder.  */
+
+/* Here is a function which callers may wish to use for read_memory_func.
+   It gets bytes from a buffer.  */
+extern int buffer_read_memory
+  (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *);
+
+/* This function goes with buffer_read_memory.
+   It prints a message using info->fprintf_func and info->stream.  */
+extern void perror_memory (int, bfd_vma, struct disassemble_info *);
+
+
+/* Just print the address in hex.  This is included for completeness even
+   though both GDB and objdump provide their own (to print symbolic
+   addresses).  */
+extern void generic_print_address
+  (bfd_vma, struct disassemble_info *);
+
+/* Always true.  */
+extern int generic_symbol_at_address
+  (bfd_vma, struct disassemble_info *);
+
+/* Also always true.  */
+extern bfd_boolean generic_symbol_is_valid
+  (asymbol *, struct disassemble_info *);
+
+/* Method to initialize a disassemble_info struct.  This should be
+   called by all applications creating such a struct.  */
+extern void init_disassemble_info (struct disassemble_info *dinfo, void *stream,
+				   fprintf_ftype fprintf_func);
+
+/* For compatibility with existing code.  */
+#define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
+  init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
+#define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
+  init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ! defined (DIS_ASM_H) */