mirror of
https://github.com/frida/tinycc
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0bdbd49eac
avoid c++/c99 style comments in preprocessor directives avoid leadings whitespaces in preprocessor directives mention implemented variable length arrays in documentation fixed ambiguous option in texi2html call (Austin English)
447 lines
22 KiB
C
447 lines
22 KiB
C
/**************************************************************************/
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/* COFF.H */
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/* COFF data structures and related definitions used by the linker */
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/**************************************************************************/
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/*------------------------------------------------------------------------*/
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/* COFF FILE HEADER */
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/*------------------------------------------------------------------------*/
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struct filehdr {
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unsigned short f_magic; /* magic number */
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unsigned short f_nscns; /* number of sections */
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long f_timdat; /* time & date stamp */
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long f_symptr; /* file pointer to symtab */
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long f_nsyms; /* number of symtab entries */
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unsigned short f_opthdr; /* sizeof(optional hdr) */
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unsigned short f_flags; /* flags */
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unsigned short f_TargetID; /* for C6x = 0x0099 */
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};
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/*------------------------------------------------------------------------*/
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/* File header flags */
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/*------------------------------------------------------------------------*/
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#define F_RELFLG 0x01 /* relocation info stripped from file */
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#define F_EXEC 0x02 /* file is executable (no unresolved refs) */
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#define F_LNNO 0x04 /* line nunbers stripped from file */
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#define F_LSYMS 0x08 /* local symbols stripped from file */
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#define F_GSP10 0x10 /* 34010 version */
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#define F_GSP20 0x20 /* 34020 version */
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#define F_SWABD 0x40 /* bytes swabbed (in names) */
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#define F_AR16WR 0x80 /* byte ordering of an AR16WR (PDP-11) */
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#define F_LITTLE 0x100 /* byte ordering of an AR32WR (vax) */
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#define F_BIG 0x200 /* byte ordering of an AR32W (3B, maxi) */
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#define F_PATCH 0x400 /* contains "patch" list in optional header */
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#define F_NODF 0x400
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#define F_VERSION (F_GSP10 | F_GSP20)
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#define F_BYTE_ORDER (F_LITTLE | F_BIG)
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#define FILHDR struct filehdr
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/* #define FILHSZ sizeof(FILHDR) */
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#define FILHSZ 22 /* above rounds to align on 4 bytes which causes problems */
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#define COFF_C67_MAGIC 0x00c2
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/*------------------------------------------------------------------------*/
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/* Macros to recognize magic numbers */
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/*------------------------------------------------------------------------*/
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#define ISMAGIC(x) (((unsigned short)(x))==(unsigned short)magic)
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#define ISARCHIVE(x) ((((unsigned short)(x))==(unsigned short)ARTYPE))
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#define BADMAGIC(x) (((unsigned short)(x) & 0x8080) && !ISMAGIC(x))
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/*------------------------------------------------------------------------*/
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/* OPTIONAL FILE HEADER */
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/*------------------------------------------------------------------------*/
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typedef struct aouthdr {
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short magic; /* see magic.h */
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short vstamp; /* version stamp */
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long tsize; /* text size in bytes, padded to FW bdry*/
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long dsize; /* initialized data " " */
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long bsize; /* uninitialized data " " */
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long entrypt; /* entry pt. */
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long text_start; /* base of text used for this file */
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long data_start; /* base of data used for this file */
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} AOUTHDR;
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#define AOUTSZ sizeof(AOUTHDR)
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/*----------------------------------------------------------------------*/
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/* When a UNIX aout header is to be built in the optional header, */
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/* the following magic numbers can appear in that header: */
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/* */
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/* AOUT1MAGIC : default : readonly sharable text segment */
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/* AOUT2MAGIC: : writable text segment */
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/* PAGEMAGIC : : configured for paging */
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/*----------------------------------------------------------------------*/
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#define AOUT1MAGIC 0410
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#define AOUT2MAGIC 0407
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#define PAGEMAGIC 0413
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/*------------------------------------------------------------------------*/
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/* COMMON ARCHIVE FILE STRUCTURES */
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/* */
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/* ARCHIVE File Organization: */
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/* _______________________________________________ */
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/* |__________ARCHIVE_MAGIC_STRING_______________| */
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/* |__________ARCHIVE_FILE_MEMBER_1______________| */
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/* | | */
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/* | Archive File Header "ar_hdr" | */
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/* |.............................................| */
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/* | Member Contents | */
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/* | 1. External symbol directory | */
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/* | 2. Text file | */
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/* |_____________________________________________| */
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/* |________ARCHIVE_FILE_MEMBER_2________________| */
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/* | "ar_hdr" | */
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/* |.............................................| */
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/* | Member Contents (.o or text file) | */
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/* |_____________________________________________| */
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/* | . . . | */
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/* | . . . | */
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/* | . . . | */
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/* |_____________________________________________| */
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/* |________ARCHIVE_FILE_MEMBER_n________________| */
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/* | "ar_hdr" | */
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/* |.............................................| */
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/* | Member Contents | */
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/* |_____________________________________________| */
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/* */
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/*------------------------------------------------------------------------*/
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#define COFF_ARMAG "!<arch>\n"
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#define SARMAG 8
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#define ARFMAG "`\n"
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struct ar_hdr /* archive file member header - printable ascii */
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{
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char ar_name[16]; /* file member name - `/' terminated */
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char ar_date[12]; /* file member date - decimal */
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char ar_uid[6]; /* file member user id - decimal */
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char ar_gid[6]; /* file member group id - decimal */
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char ar_mode[8]; /* file member mode - octal */
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char ar_size[10]; /* file member size - decimal */
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char ar_fmag[2]; /* ARFMAG - string to end header */
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};
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/*------------------------------------------------------------------------*/
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/* SECTION HEADER */
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/*------------------------------------------------------------------------*/
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struct scnhdr {
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char s_name[8]; /* section name */
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long s_paddr; /* physical address */
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long s_vaddr; /* virtual address */
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long s_size; /* section size */
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long s_scnptr; /* file ptr to raw data for section */
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long s_relptr; /* file ptr to relocation */
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long s_lnnoptr; /* file ptr to line numbers */
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unsigned int s_nreloc; /* number of relocation entries */
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unsigned int s_nlnno; /* number of line number entries */
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unsigned int s_flags; /* flags */
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unsigned short s_reserved; /* reserved byte */
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unsigned short s_page; /* memory page id */
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};
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#define SCNHDR struct scnhdr
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#define SCNHSZ sizeof(SCNHDR)
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/*------------------------------------------------------------------------*/
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/* Define constants for names of "special" sections */
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/*------------------------------------------------------------------------*/
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/* #define _TEXT ".text" */
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#define _DATA ".data"
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#define _BSS ".bss"
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#define _CINIT ".cinit"
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#define _TV ".tv"
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/*------------------------------------------------------------------------*/
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/* The low 4 bits of s_flags is used as a section "type" */
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/*------------------------------------------------------------------------*/
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#define STYP_REG 0x00 /* "regular" : allocated, relocated, loaded */
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#define STYP_DSECT 0x01 /* "dummy" : not allocated, relocated, not loaded */
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#define STYP_NOLOAD 0x02 /* "noload" : allocated, relocated, not loaded */
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#define STYP_GROUP 0x04 /* "grouped" : formed of input sections */
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#define STYP_PAD 0x08 /* "padding" : not allocated, not relocated, loaded */
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#define STYP_COPY 0x10 /* "copy" : used for C init tables -
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not allocated, relocated,
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loaded; reloc & lineno
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entries processed normally */
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#define STYP_TEXT 0x20 /* section contains text only */
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#define STYP_DATA 0x40 /* section contains data only */
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#define STYP_BSS 0x80 /* section contains bss only */
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#define STYP_ALIGN 0x100 /* align flag passed by old version assemblers */
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#define ALIGN_MASK 0x0F00 /* part of s_flags that is used for align vals */
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#define ALIGNSIZE(x) (1 << ((x & ALIGN_MASK) >> 8))
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/*------------------------------------------------------------------------*/
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/* RELOCATION ENTRIES */
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/*------------------------------------------------------------------------*/
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struct reloc
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{
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long r_vaddr; /* (virtual) address of reference */
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short r_symndx; /* index into symbol table */
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unsigned short r_disp; /* additional bits for address calculation */
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unsigned short r_type; /* relocation type */
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};
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#define RELOC struct reloc
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#define RELSZ 10 /* sizeof(RELOC) */
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/*--------------------------------------------------------------------------*/
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/* define all relocation types */
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/*--------------------------------------------------------------------------*/
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#define R_ABS 0 /* absolute address - no relocation */
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#define R_DIR16 01 /* UNUSED */
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#define R_REL16 02 /* UNUSED */
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#define R_DIR24 04 /* UNUSED */
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#define R_REL24 05 /* 24 bits, direct */
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#define R_DIR32 06 /* UNUSED */
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#define R_RELBYTE 017 /* 8 bits, direct */
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#define R_RELWORD 020 /* 16 bits, direct */
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#define R_RELLONG 021 /* 32 bits, direct */
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#define R_PCRBYTE 022 /* 8 bits, PC-relative */
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#define R_PCRWORD 023 /* 16 bits, PC-relative */
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#define R_PCRLONG 024 /* 32 bits, PC-relative */
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#define R_OCRLONG 030 /* GSP: 32 bits, one's complement direct */
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#define R_GSPPCR16 031 /* GSP: 16 bits, PC relative (in words) */
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#define R_GSPOPR32 032 /* GSP: 32 bits, direct big-endian */
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#define R_PARTLS16 040 /* Brahma: 16 bit offset of 24 bit address*/
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#define R_PARTMS8 041 /* Brahma: 8 bit page of 24 bit address */
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#define R_PARTLS7 050 /* DSP: 7 bit offset of 16 bit address */
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#define R_PARTMS9 051 /* DSP: 9 bit page of 16 bit address */
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#define R_REL13 052 /* DSP: 13 bits, direct */
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/*------------------------------------------------------------------------*/
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/* LINE NUMBER ENTRIES */
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/*------------------------------------------------------------------------*/
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struct lineno
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{
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union
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{
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long l_symndx ; /* sym. table index of function name
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iff l_lnno == 0 */
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long l_paddr ; /* (physical) address of line number */
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} l_addr ;
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unsigned short l_lnno ; /* line number */
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};
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#define LINENO struct lineno
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#define LINESZ 6 /* sizeof(LINENO) */
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/*------------------------------------------------------------------------*/
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/* STORAGE CLASSES */
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/*------------------------------------------------------------------------*/
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#define C_EFCN -1 /* physical end of function */
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#define C_NULL 0
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#define C_AUTO 1 /* automatic variable */
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#define C_EXT 2 /* external symbol */
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#define C_STAT 3 /* static */
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#define C_REG 4 /* register variable */
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#define C_EXTDEF 5 /* external definition */
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#define C_LABEL 6 /* label */
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#define C_ULABEL 7 /* undefined label */
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#define C_MOS 8 /* member of structure */
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#define C_ARG 9 /* function argument */
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#define C_STRTAG 10 /* structure tag */
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#define C_MOU 11 /* member of union */
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#define C_UNTAG 12 /* union tag */
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#define C_TPDEF 13 /* type definition */
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#define C_USTATIC 14 /* undefined static */
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#define C_ENTAG 15 /* enumeration tag */
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#define C_MOE 16 /* member of enumeration */
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#define C_REGPARM 17 /* register parameter */
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#define C_FIELD 18 /* bit field */
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#define C_BLOCK 100 /* ".bb" or ".eb" */
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#define C_FCN 101 /* ".bf" or ".ef" */
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#define C_EOS 102 /* end of structure */
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#define C_FILE 103 /* file name */
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#define C_LINE 104 /* dummy sclass for line number entry */
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#define C_ALIAS 105 /* duplicate tag */
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#define C_HIDDEN 106 /* special storage class for external */
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/* symbols in dmert public libraries */
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/*------------------------------------------------------------------------*/
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/* SYMBOL TABLE ENTRIES */
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/*------------------------------------------------------------------------*/
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#define SYMNMLEN 8 /* Number of characters in a symbol name */
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#define FILNMLEN 14 /* Number of characters in a file name */
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#define DIMNUM 4 /* Number of array dimensions in auxiliary entry */
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struct syment
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{
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union
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{
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char _n_name[SYMNMLEN]; /* old COFF version */
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struct
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{
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long _n_zeroes; /* new == 0 */
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long _n_offset; /* offset into string table */
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} _n_n;
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char *_n_nptr[2]; /* allows for overlaying */
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} _n;
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long n_value; /* value of symbol */
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short n_scnum; /* section number */
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unsigned short n_type; /* type and derived type */
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char n_sclass; /* storage class */
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char n_numaux; /* number of aux. entries */
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};
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#define n_name _n._n_name
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#define n_nptr _n._n_nptr[1]
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#define n_zeroes _n._n_n._n_zeroes
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#define n_offset _n._n_n._n_offset
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/*------------------------------------------------------------------------*/
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/* Relocatable symbols have a section number of the */
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/* section in which they are defined. Otherwise, section */
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/* numbers have the following meanings: */
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/*------------------------------------------------------------------------*/
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#define N_UNDEF 0 /* undefined symbol */
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#define N_ABS -1 /* value of symbol is absolute */
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#define N_DEBUG -2 /* special debugging symbol */
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#define N_TV (unsigned short)-3 /* needs transfer vector (preload) */
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#define P_TV (unsigned short)-4 /* needs transfer vector (postload) */
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/*------------------------------------------------------------------------*/
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/* The fundamental type of a symbol packed into the low */
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/* 4 bits of the word. */
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/*------------------------------------------------------------------------*/
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#define _EF ".ef"
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#define T_NULL 0 /* no type info */
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#define T_ARG 1 /* function argument (only used by compiler) */
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#define T_CHAR 2 /* character */
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#define T_SHORT 3 /* short integer */
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#define T_INT 4 /* integer */
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#define T_LONG 5 /* long integer */
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#define T_FLOAT 6 /* floating point */
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#define T_DOUBLE 7 /* double word */
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#define T_STRUCT 8 /* structure */
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#define T_UNION 9 /* union */
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#define T_ENUM 10 /* enumeration */
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#define T_MOE 11 /* member of enumeration */
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#define T_UCHAR 12 /* unsigned character */
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#define T_USHORT 13 /* unsigned short */
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#define T_UINT 14 /* unsigned integer */
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#define T_ULONG 15 /* unsigned long */
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/*------------------------------------------------------------------------*/
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/* derived types are: */
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/*------------------------------------------------------------------------*/
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#define DT_NON 0 /* no derived type */
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#define DT_PTR 1 /* pointer */
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#define DT_FCN 2 /* function */
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#define DT_ARY 3 /* array */
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#define MKTYPE(basic, d1,d2,d3,d4,d5,d6) \
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((basic) | ((d1) << 4) | ((d2) << 6) | ((d3) << 8) |\
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((d4) << 10) | ((d5) << 12) | ((d6) << 14))
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/*------------------------------------------------------------------------*/
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/* type packing constants and macros */
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/*------------------------------------------------------------------------*/
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#define N_BTMASK_COFF 017
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#define N_TMASK_COFF 060
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#define N_TMASK1_COFF 0300
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#define N_TMASK2_COFF 0360
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#define N_BTSHFT_COFF 4
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#define N_TSHIFT_COFF 2
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#define BTYPE_COFF(x) ((x) & N_BTMASK_COFF)
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#define ISINT(x) (((x) >= T_CHAR && (x) <= T_LONG) || \
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((x) >= T_UCHAR && (x) <= T_ULONG) || (x) == T_ENUM)
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#define ISFLT_COFF(x) ((x) == T_DOUBLE || (x) == T_FLOAT)
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#define ISPTR_COFF(x) (((x) & N_TMASK_COFF) == (DT_PTR << N_BTSHFT_COFF))
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#define ISFCN_COFF(x) (((x) & N_TMASK_COFF) == (DT_FCN << N_BTSHFT_COFF))
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#define ISARY_COFF(x) (((x) & N_TMASK_COFF) == (DT_ARY << N_BTSHFT_COFF))
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#define ISTAG_COFF(x) ((x)==C_STRTAG || (x)==C_UNTAG || (x)==C_ENTAG)
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#define INCREF_COFF(x) ((((x)&~N_BTMASK_COFF)<<N_TSHIFT_COFF)|(DT_PTR<<N_BTSHFT_COFF)|(x&N_BTMASK_COFF))
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#define DECREF_COFF(x) ((((x)>>N_TSHIFT_COFF)&~N_BTMASK_COFF)|((x)&N_BTMASK_COFF))
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/*------------------------------------------------------------------------*/
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/* AUXILIARY SYMBOL ENTRY */
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/*------------------------------------------------------------------------*/
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union auxent
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{
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struct
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{
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long x_tagndx; /* str, un, or enum tag indx */
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union
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{
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struct
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{
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unsigned short x_lnno; /* declaration line number */
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unsigned short x_size; /* str, union, array size */
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} x_lnsz;
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long x_fsize; /* size of function */
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} x_misc;
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union
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{
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struct /* if ISFCN, tag, or .bb */
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{
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long x_lnnoptr; /* ptr to fcn line # */
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long x_endndx; /* entry ndx past block end */
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} x_fcn;
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struct /* if ISARY, up to 4 dimen. */
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{
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unsigned short x_dimen[DIMNUM];
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} x_ary;
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} x_fcnary;
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unsigned short x_regcount; /* number of registers used by func */
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} x_sym;
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struct
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{
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char x_fname[FILNMLEN];
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} x_file;
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struct
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{
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long x_scnlen; /* section length */
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unsigned short x_nreloc; /* number of relocation entries */
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unsigned short x_nlinno; /* number of line numbers */
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} x_scn;
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};
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#define SYMENT struct syment
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#define SYMESZ 18 /* sizeof(SYMENT) */
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#define AUXENT union auxent
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#define AUXESZ 18 /* sizeof(AUXENT) */
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/*------------------------------------------------------------------------*/
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/* NAMES OF "SPECIAL" SYMBOLS */
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/*------------------------------------------------------------------------*/
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#define _STEXT ".text"
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#define _ETEXT "etext"
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#define _SDATA ".data"
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#define _EDATA "edata"
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#define _SBSS ".bss"
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#define _END "end"
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#define _CINITPTR "cinit"
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/*--------------------------------------------------------------------------*/
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/* ENTRY POINT SYMBOLS */
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/*--------------------------------------------------------------------------*/
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#define _START "_start"
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#define _MAIN "_main"
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/* _CSTART "_c_int00" (defined in params.h) */
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#define _TVORIG "_tvorig"
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#define _TORIGIN "_torigin"
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#define _DORIGIN "_dorigin"
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#define _SORIGIN "_sorigin"
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