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mist-devel.mist-board/tools/vasm/output_aout.h
2014-01-31 12:21:39 +00:00

210 lines
7.2 KiB
C

/* output_aout.h header file for a.out objects */
/* (c) in 2008 by Frank Wille */
/* a.out header */
struct aout_hdr {
unsigned char a_midmag[4];
unsigned char a_text[4];
unsigned char a_data[4];
unsigned char a_bss[4];
unsigned char a_syms[4];
unsigned char a_entry[4];
unsigned char a_trsize[4];
unsigned char a_drsize[4];
};
/* a_magic */
#define OMAGIC 0407 /* old impure format */
#define NMAGIC 0410 /* read-only text */
#define ZMAGIC 0413 /* demand load format */
#define QMAGIC 0314 /* not supported */
/* a_mid - machine id */
#define MID_SUN010 1 /* sun 68010/68020 binary */
#define MID_SUN020 2 /* sun 68020-only binary */
#define MID_PC386 100 /* 386 PC binary. (so quoth BFD) */
#define MID_HP200 200 /* hp200 (68010) BSD binary */
#define MID_I386 134 /* i386 BSD binary */
#define MID_M68K 135 /* m68k BSD binary with 8K page sizes */
#define MID_M68K4K 136 /* m68k BSD binary with 4K page sizes */
#define MID_NS32532 137 /* ns32532 */
#define MID_SPARC 138 /* sparc */
#define MID_PMAX 139 /* pmax */
#define MID_VAX1K 140 /* vax 1K page size binaries */
#define MID_ALPHA 141 /* Alpha BSD binary */
#define MID_MIPS 142 /* big-endian MIPS */
#define MID_ARM6 143 /* ARM6 */
#define MID_SH3 145 /* SH3 */
#define MID_POWERPC 149 /* big-endian PowerPC */
#define MID_VAX 150 /* vax */
#define MID_SPARC64 151 /* LP64 sparc */
#define MID_HP300 300 /* hp300 (68020+68881) BSD binary */
#define MID_HPUX 0x20C /* hp200/300 HP-UX binary */
#define MID_HPUX800 0x20B /* hp800 HP-UX binary */
/* a_flags */
#define EX_DYNAMIC 0x20
#define EX_PIC 0x10
#define EX_DPMASK 0x30
/* a_midmag macros */
#define SETMIDMAG(a,mag,mid,flag) setval(1,(a)->a_midmag,4, \
((flag)&0x3f)<<26|((mid)&0x3ff)<<16|((mag)&0xffff))
/* Relocation info structures */
struct relocation_info {
unsigned char r_address[4];
unsigned char r_info[4];
};
#define RELB_symbolnum 0 /* ordinal number of add symbol */
#define RELS_symbolnum 24
#define RELB_reloc 24 /* the whole reloc field */
#define RELS_reloc 8
/* standard relocs: M68k, x86, ... */
#define RSTDB_pcrel 24 /* 1 if value should be pc-relative */
#define RSTDS_pcrel 1
#define RSTDB_length 25 /* log base 2 of value's width */
#define RSTDS_length 2
#define RSTDB_extern 27 /* 1 if need to add symbol to value */
#define RSTDS_extern 1
#define RSTDB_baserel 28 /* linkage table relative */
#define RSTDS_baserel 1
#define RSTDB_jmptable 29 /* relocate to jump table */
#define RSTDS_jmptable 1
#define RSTDB_relative 30 /* load address relative */
#define RSTDS_relative 1
#define RSTDB_copy 31 /* run time copy */
#define RSTDS_copy 1
/* Symbol table entry format */
struct nlist32 {
unsigned char n_strx[4]; /* string table offset */
unsigned char n_type; /* type defines */
signed char n_other; /* spare */
unsigned char n_desc[2]; /* used by stab entries */
unsigned char n_value[4]; /* address/value of the symbol */
};
#define N_EXT 0x01 /* external (global) bit, OR'ed in */
#define N_TYPE 0x1e /* mask for all the type bits */
#define N_STAB 0x0e0 /* mask for debugger symbols */
/* symbol types */
#define N_UNDF 0x00 /* undefined */
#define N_ABS 0x02 /* absolute address */
#define N_TEXT 0x04 /* text segment */
#define N_DATA 0x06 /* data segment */
#define N_BSS 0x08 /* bss segment */
#define N_INDR 0x0a /* alias definition */
#define N_SIZE 0x0c /* pseudo type, defines a symbol's size */
#define N_WEAKU 0x0d /* GNU: Weak undefined symbol */
#define N_WEAKA 0x0e /* GNU: Weak absolute symbol */
#define N_WEAKT 0x0f /* GNU: Weak text symbol */
#define N_WEAKD 0x10 /* GNU: Weak data symbol */
#define N_WEAKB 0x11 /* GNU: Weak bss symbol */
#define N_COMM 0x12 /* common reference */
#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 */
#define N_SETV 0x1c /* set vector symbol */
#define N_FN 0x1e /* file name (N_EXT on) */
#define N_WARN 0x1e /* warning message (N_EXT off) */
/* debugging symbols */
#define N_GSYM 0x20 /* global symbol */
#define N_FNAME 0x22 /* F77 function name */
#define N_FUN 0x24 /* procedure name */
#define N_STSYM 0x26 /* data segment variable */
#define N_LCSYM 0x28 /* bss segment variable */
#define N_MAIN 0x2a /* main function name */
#define N_PC 0x30 /* global Pascal symbol */
#define N_RSYM 0x40 /* register variable */
#define N_SLINE 0x44 /* text segment line number */
#define N_DSLINE 0x46 /* data segment line number */
#define N_BSLINE 0x48 /* bss segment line number */
#define N_SSYM 0x60 /* structure/union element */
#define N_SO 0x64 /* main source file name */
#define N_LSYM 0x80 /* stack variable */
#define N_BINCL 0x82 /* include file beginning */
#define N_SOL 0x84 /* included source file name */
#define N_PSYM 0xa0 /* parameter variable */
#define N_EINCL 0xa2 /* include file end */
#define N_ENTRY 0xa4 /* alternate entry point */
#define N_LBRAC 0xc0 /* left bracket */
#define N_EXCL 0xc2 /* deleted include file */
#define N_RBRAC 0xe0 /* right bracket */
#define N_BCOMM 0xe2 /* begin common */
#define N_ECOMM 0xe4 /* end common */
#define N_ECOML 0xe8 /* end common (local name) */
#define N_LENG 0xfe /* length of preceding entry */
/* n_other & 0x0f */
#define AUX_UNKNOWN 0
#define AUX_OBJECT 1
#define AUX_FUNC 2
#define AUX_LABEL 3
#define AUX_IGNORE 0xff /* vlink-specific, used to ignore this symbol */
/* n_other & 0xf0 >> 4 */
#define BIND_LOCAL 0 /* not used? */
#define BIND_GLOBAL 1 /* not used? */
#define BIND_WEAK 2
/* vasm specific - used to generate a.out files */
#define STRHTABSIZE 0x10000
#define SYMHTABSIZE 0x10000
#define _TEXT 0
#define _DATA 1
#define _BSS 2
struct StrTabNode {
struct node n;
struct StrTabNode *hashchain;
char *str;
unsigned long offset;
};
struct StrTabList {
struct list l;
struct StrTabNode **hashtab;
unsigned long nextoffset;
};
struct SymbolNode {
struct node n;
struct SymbolNode *hashchain;
char *name;
struct nlist32 s;
unsigned long index;
};
struct SymTabList {
struct list l;
struct SymbolNode **hashtab;
unsigned long nextindex;
};
struct RelocNode {
struct node n;
struct relocation_info r;
};
#if defined(VASM_CPU_M68K)
#define MID MID_SUN020
#elif defined(VASM_CPU_PPC)
#define MID MID_POWERPC
#elif defined(VASM_CPU_ARM)
#define MID MID_ARM6
#elif defined(VASM_CPU_X86)
#define MID MID_PC386
#else
#define MID (0)
#endif