sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 319 insertions, 0 deletions

diff --git a/support/sdbinutils/include/aout/adobe.h b/support/sdbinutils/include/aout/adobe.h
new file mode 100644
index 0000000..33770f9
--- /dev/null
+++ b/support/sdbinutils/include/aout/adobe.h
@@ -0,0 +1,319 @@
+/* `a.out.adobe' differences from standard a.out files
+
+   Copyright (C) 2001-2018 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 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.  */
+
+#ifndef __A_OUT_ADOBE_H__
+#define __A_OUT_ADOBE_H__
+
+#define	BYTES_IN_WORD	4
+
+/* Struct external_exec is the same.  */
+
+/* This is the layout on disk of the 32-bit or 64-bit exec header.  */
+
+struct external_exec 
+{
+  bfd_byte e_info[4];		    /* Magic number and stuff.  */
+  bfd_byte e_text[BYTES_IN_WORD];   /* Length of text section in bytes.  */
+  bfd_byte e_data[BYTES_IN_WORD];   /* Length of data section in bytes.  */
+  bfd_byte e_bss[BYTES_IN_WORD];    /* Length of bss area in bytes.  */
+  bfd_byte e_syms[BYTES_IN_WORD];   /* Length of symbol table in bytes.  */
+  bfd_byte e_entry[BYTES_IN_WORD];  /* Start address.  */
+  bfd_byte e_trsize[BYTES_IN_WORD]; /* Length of text relocation info.  */
+  bfd_byte e_drsize[BYTES_IN_WORD]; /* Length of data relocation info.  */
+};
+
+#define	EXEC_BYTES_SIZE	(4 + BYTES_IN_WORD * 7)
+
+/* Magic numbers for a.out files.  */
+
+#undef	ZMAGIC
+#define	ZMAGIC	0xAD0BE		/* Cute, eh?  */
+#undef	OMAGIC
+#undef	NMAGIC
+
+#define N_BADMAG(x)	  ((x)->a_info != ZMAGIC)
+
+/* By default, segment size is constant.  But some machines override this
+   to be a function of the a.out header (e.g. machine type).  */
+#ifndef	N_SEGSIZE
+#define	N_SEGSIZE(x)	SEGMENT_SIZE
+#endif
+#undef N_SEGSIZE   /* FIXMEXXXX */
+
+/* Segment information for the a.out.Adobe format is specified after the
+   file header.  It contains N segment descriptors, followed by one with
+   a type of zero.  
+
+   The actual text of the segments starts at N_TXTOFF in the file,
+   regardless of how many or how few segment headers there are.  */
+
+struct external_segdesc
+{
+  unsigned char e_type[1];
+  unsigned char e_size[3];
+  unsigned char e_virtbase[4];
+  unsigned char e_filebase[4];
+};
+
+struct internal_segdesc
+{
+  unsigned int	a_type:8;	/* Segment type N_TEXT, N_DATA, 0.  */
+  unsigned int 	a_size:24;	/* Segment size.  */
+  bfd_vma	a_virtbase;	/* Virtual address.  */
+  unsigned int	a_filebase;	/* Base address in object file.  */
+};
+
+#define N_TXTADDR(x) is_this_really_unused?
+
+/* This is documented to be at 1024, but appears to really be at 2048.
+   FIXME?!  */
+#define N_TXTOFF(x)	2048
+
+#define	N_TXTSIZE(x) ((x)->a_text)
+
+#define N_DATADDR(x) is_this_really_unused?
+
+#define N_BSSADDR(x) is_this_really_unused?
+
+/* Offsets of the various portions of the file after the text segment.  */
+
+#define N_DATOFF(x)	( N_TXTOFF(x) + N_TXTSIZE(x) )
+#define N_TRELOFF(x)	( N_DATOFF(x) + (x)->a_data )
+#define N_DRELOFF(x)	( N_TRELOFF(x) + (x)->a_trsize )
+#define N_SYMOFF(x)	( N_DRELOFF(x) + (x)->a_drsize )
+#define N_STROFF(x)	( N_SYMOFF(x) + (x)->a_syms )
+
+/* Symbols.  */
+struct external_nlist
+{
+  bfd_byte e_strx[BYTES_IN_WORD];	/* Index into string table of name.  */
+  bfd_byte e_type[1];			/* Type of symbol.  */
+  bfd_byte e_other[1];			/* Misc info (usually empty).  */
+  bfd_byte e_desc[2];			/* Description field.  */
+  bfd_byte e_value[BYTES_IN_WORD];	/* Value of symbol.  */
+};
+
+#define EXTERNAL_NLIST_SIZE (BYTES_IN_WORD+4+BYTES_IN_WORD)
+
+struct internal_nlist
+{
+  unsigned long n_strx;			/* Index into string table of name.  */
+  unsigned char n_type;			/* Type of symbol.  */
+  unsigned char n_other;		/* Misc info (usually empty).  */
+  unsigned short n_desc;		/* Description field.  */
+  bfd_vma n_value;			/* Value of symbol.  */
+};
+
+/* The n_type field is the symbol type, containing:  */
+
+#define N_UNDF	0	/* Undefined symbol.  */
+#define N_ABS 	2	/* Absolute symbol -- defined at particular addr.  */
+#define N_TEXT 	4	/* Text sym -- defined at offset in text seg.  */
+#define N_DATA 	6	/* Data sym -- defined at offset in data seg.  */
+#define N_BSS 	8	/* BSS  sym -- defined at offset in zero'd seg.  */
+#define	N_COMM	0x12	/* Common symbol (visible after shared lib dynlink).  */
+#define N_FN	0x1f	/* File name of .o file.  */
+#define	N_FN_SEQ 0x0C	/* N_FN from Sequent compilers (sigh).  */
+/* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT,
+   N_DATA, or N_BSS.  When the low-order bit of other types is set,
+   (e.g. N_WARNING versus N_FN), they are two different types.  */
+#define N_EXT 	1	/* External symbol (as opposed to local-to-this-file).  */
+#define N_TYPE  0x1e
+#define N_STAB 	0xe0	/* If any of these bits are on, it's a debug symbol.  */
+
+#define N_INDR 0x0a
+
+/* The following symbols refer to set elements.
+   All the N_SET[ATDB] symbols with the same name form one set.
+   Space is allocated for the set in the text section, and each set
+   elements value is stored into one word of the space.
+   The first word of the space is the length of the set (number of elements).
+
+   The address of the set is made into an N_SETV symbol
+   whose name is the same as the name of the set.
+   This symbol acts like a N_DATA global symbol
+   in that it can satisfy undefined external references.  */
+
+/* These appear as input to LD, in a .o file.  */
+#define	N_SETA	0x14		/* Absolute set element symbol.  */
+#define	N_SETT	0x16		/* Text set element symbol.  */
+#define	N_SETD	0x18		/* Data set element symbol.  */
+#define	N_SETB	0x1A		/* Bss set element symbol.  */
+
+/* This is output from LD.  */
+#define N_SETV	0x1C		/* Pointer to set vector in data area.  */
+
+/* Warning symbol. The text gives a warning message, the next symbol
+   in the table will be undefined. When the symbol is referenced, the
+   message is printed.  */
+
+#define	N_WARNING 0x1e
+
+/* Relocations 
+
+  There	are two types of relocation flavours for a.out systems,
+  standard and extended. The standard form is used on systems where the
+  instruction has room for all the bits of an offset to the operand, whilst
+  the extended form is used when an address operand has to be split over n
+  instructions. Eg, on the 68k, each move instruction can reference
+  the target with a displacement of 16 or 32 bits. On the sparc, move
+  instructions use an offset of 14 bits, so the offset is stored in
+  the reloc field, and the data in the section is ignored.  */
+
+/* This structure describes a single relocation to be performed.
+   The text-relocation section of the file is a vector of these structures,
+   all of which apply to the text section.
+   Likewise, the data-relocation section applies to the data section.  */
+
+struct reloc_std_external
+{
+  bfd_byte r_address[BYTES_IN_WORD];	/* Offset of data to relocate.  */
+  bfd_byte r_index[3];			/* Symbol table index of symbol.  */
+  bfd_byte r_type[1];			/* Relocation type.  */
+};
+
+#define	RELOC_STD_BITS_PCREL_BIG	0x80
+#define	RELOC_STD_BITS_PCREL_LITTLE	0x01
+
+#define	RELOC_STD_BITS_LENGTH_BIG	0x60
+#define	RELOC_STD_BITS_LENGTH_SH_BIG	5	/* To shift to units place.  */
+#define	RELOC_STD_BITS_LENGTH_LITTLE	0x06
+#define	RELOC_STD_BITS_LENGTH_SH_LITTLE	1
+
+#define	RELOC_STD_BITS_EXTERN_BIG	0x10
+#define	RELOC_STD_BITS_EXTERN_LITTLE	0x08
+
+#define	RELOC_STD_BITS_BASEREL_BIG	0x08
+#define	RELOC_STD_BITS_BASEREL_LITTLE	0x08
+
+#define	RELOC_STD_BITS_JMPTABLE_BIG	0x04
+#define	RELOC_STD_BITS_JMPTABLE_LITTLE	0x04
+
+#define	RELOC_STD_BITS_RELATIVE_BIG	0x02
+#define	RELOC_STD_BITS_RELATIVE_LITTLE	0x02
+
+#define	RELOC_STD_SIZE	(BYTES_IN_WORD + 3 + 1)		/* Bytes per relocation entry.  */
+
+struct reloc_std_internal
+{
+  bfd_vma r_address;		/* Address (within segment) to be relocated.  */
+  /* The meaning of r_symbolnum depends on r_extern.  */
+  unsigned int r_symbolnum:24;
+  /* Nonzero means value is a pc-relative offset
+     and it should be relocated for changes in its own address
+     as well as for changes in the symbol or section specified.  */
+  unsigned int r_pcrel:1;
+  /* Length (as exponent of 2) of the field to be relocated.
+     Thus, a value of 2 indicates 1<<2 bytes.  */
+  unsigned int r_length:2;
+  /* 1 => relocate with value of symbol.
+     r_symbolnum is the index of the symbol
+     in files the symbol table.
+     0 => relocate with the address of a segment.
+     r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
+     (the N_EXT bit may be set also, but signifies nothing).  */
+  unsigned int r_extern:1;
+  /* The next three bits are for SunOS shared libraries, and seem to
+     be undocumented.  */
+  unsigned int r_baserel:1;	/* Linkage table relative.  */
+  unsigned int r_jmptable:1;	/* pc-relative to jump table.  */
+  unsigned int r_relative:1;	/* "relative relocation".  */
+  /* unused */
+  unsigned int r_pad:1;		/* Padding -- set to zero.  */
+};
+
+
+/* EXTENDED RELOCS  */
+
+struct reloc_ext_external
+{
+  bfd_byte r_address[BYTES_IN_WORD];	/* Offset of data to relocate.  */
+  bfd_byte r_index[3];			/* Symbol table index of symbol.  */
+  bfd_byte r_type[1];			/* Relocation type.  */
+  bfd_byte r_addend[BYTES_IN_WORD];	/* Datum addend.  */
+};
+
+#define	RELOC_EXT_BITS_EXTERN_BIG	0x80
+#define	RELOC_EXT_BITS_EXTERN_LITTLE	0x01
+
+#define	RELOC_EXT_BITS_TYPE_BIG		0x1F
+#define	RELOC_EXT_BITS_TYPE_SH_BIG	0
+#define	RELOC_EXT_BITS_TYPE_LITTLE	0xF8
+#define	RELOC_EXT_BITS_TYPE_SH_LITTLE	3
+
+/* Bytes per relocation entry */
+#define	RELOC_EXT_SIZE	(BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD)
+
+enum reloc_type
+{
+  /* Simple relocations.  */
+  RELOC_8,			/* data[0:7] = addend + sv 		*/
+  RELOC_16,			/* data[0:15] = addend + sv 		*/
+  RELOC_32,			/* data[0:31] = addend + sv 		*/
+  /* PC-rel displacement.  */
+  RELOC_DISP8,			/* data[0:7] = addend - pc + sv 	*/
+  RELOC_DISP16,			/* data[0:15] = addend - pc + sv 	*/
+  RELOC_DISP32,			/* data[0:31] = addend - pc + sv 	*/
+  /* Special.  */
+  RELOC_WDISP30,		/* data[0:29] = (addend + sv - pc)>>2 	*/
+  RELOC_WDISP22,		/* data[0:21] = (addend + sv - pc)>>2 	*/
+  RELOC_HI22,			/* data[0:21] = (addend + sv)>>10 	*/
+  RELOC_22,			/* data[0:21] = (addend + sv) 		*/
+  RELOC_13,			/* data[0:12] = (addend + sv)		*/
+  RELOC_LO10,			/* data[0:9] = (addend + sv)		*/
+  RELOC_SFA_BASE,		
+  RELOC_SFA_OFF13,
+  /* P.I.C. (base-relative).  */
+  RELOC_BASE10,  		/* Not sure - maybe we can do this the  */
+  RELOC_BASE13,			/* right way now.  */
+  RELOC_BASE22,
+  /* For some sort of pc-rel P.I.C. (?)  */
+  RELOC_PC10,
+  RELOC_PC22,
+  /* P.I.C. jump table.  */
+  RELOC_JMP_TBL,
+  /* Reputedly for shared libraries somehow.  */
+  RELOC_SEGOFF16,
+  RELOC_GLOB_DAT,
+  RELOC_JMP_SLOT,
+  RELOC_RELATIVE,
+
+  RELOC_11,	
+  RELOC_WDISP2_14,
+  RELOC_WDISP19,
+  RELOC_HHI22,			/* data[0:21] = (addend + sv) >> 42     */
+  RELOC_HLO10,			/* data[0:9] = (addend + sv) >> 32      */
+  
+  /* 29K relocation types */
+  RELOC_JUMPTARG,
+  RELOC_CONST,
+  RELOC_CONSTH,
+  
+  NO_RELOC
+};
+
+struct reloc_internal
+{
+  bfd_vma r_address;		/* Offset of data to relocate.  */
+  long	r_index;		/* Symbol table index of symbol.  */
+  enum reloc_type r_type;	/* Relocation type.  */
+  bfd_vma r_addend;		/* Datum addend.  */
+};
+
+#endif	/* __A_OUT_ADOBE_H__ */