a_out.h
资源名称:ixp425BSP.rar [点击查看]
上传用户:luoyougen
上传日期:2008-05-12
资源大小:23136k
文件大小:7k
源码类别:
VxWorks
开发平台:
C/C++
- /* a_out.h - a.out object module header */
- /* Copyright 1984-1992 Wind River Systems, Inc. */
- /*
- modification history
- --------------------
- 01p,22sep92,rrr added support for c++
- 01o,04jul92,jcf cleaned up.
- 01n,19jun92,rrr changed UINT to unsigned to work with the hsp stuff
- 01m,26may92,rrr the tree shuffle
- -moved define of a_machtype into else part of HOST_SUN
- 01l,15may92,jmm changed UINT8 bitfields to unsigned
- removed a comma from SPARC enum
- 01k,04oct91,rrr passed through the ansification filter
- -fixed #else and #endif
- -changed TINY and UTINY to INT8 and UINT8
- -changed copyright notice
- 01j,03sep91,wmd removed typedef of NLIST, put back inadvertently by last revision.
- 01i,02aug91,ajm added mips target support
- 01h,21may91,jcc removed useless typedef of NLIST, identical to nlist.
- 01g,15may91,elr added #ifdef HOST_MOTOROLA
- 01f,05oct90,shl added copyright notice.
- made #endif ANSI style.
- 01e,05oct90,lpf added N_DATOFF macro.
- 01d,30apr90,gae added kludge of a_machtype for HOST_HP.
- 01c,11sep89,shl removed some of the #ifdef HOST_SUN so vxWorks can be
- made on other hosts as well.
- added #ifdef HOST_ISI.
- 01b,19apr89,ecs conditional to reflect SunOS 4.0.
- 01a,16feb87,llk created.
- */
- /*
- This file reflects Unix 4.2 a.out format.
- */
- #ifndef __INCa_outh
- #define __INCa_outh
- #ifdef __cplusplus
- extern "C" {
- #endif
- struct exec
- {
- #if defined(HOST_SUN)
- unsigned a_dynamic:1; /* has a __DYNAMIC */
- unsigned a_toolversion:7; /* version of toolset used to create file */
- unsigned a_machtype: 8; /* machine type */
- unsigned a_magic:16; /* magic number */
- #else
- long a_magic; /* magic number */
- #define a_machtype a_magic
- #endif /* HOST_SUN */
- unsigned long a_text; /* size of text segment */
- unsigned long a_data; /* size of initialized data */
- unsigned long a_bss; /* size of uninitialized data */
- unsigned long a_syms; /* size of symbol table */
- unsigned long a_entry; /* entry point */
- unsigned long a_trsize; /* size of text relocation */
- unsigned long a_drsize; /* size of data relocation */
- };
- /* machine types */
- #define M_OLDSUN2 0 /* old sun-2 (or not sun at all) */
- #define M_68010 1 /* runs on either 68010 or 68020 */
- #define M_68020 2 /* runs only on 68020 */
- #define M_SPARC 3 /* runs only on SPARC */
- #define M_R3000 4 /* runs only on R3000 */
- #define ZMAGIC 0413 /* demand load format */
- /*
- * Macros which take exec structures as arguments and tell whether
- * the file has a reasonable magic number or offsets to text|symbols|strings.
- */
- #define N_OLDOFF(x)
- ((x).a_magic==ZMAGIC ? 0 : sizeof (struct exec))
- #define N_TXTOFF(x)
- (sizeof (struct exec))
- #define N_DATOFF(x)
- (N_TXTOFF(x) + (x).a_text)
- #define N_SYMOFF(x)
- (N_OLDOFF(x) + (x).a_text+(x).a_data + (x).a_trsize+(x).a_drsize)
- #define N_STROFF(x)
- (N_SYMOFF(x) + (x).a_syms)
- typedef struct /* RINFO_68K - 680X0 relocation datum (a_machtype != M_SPARC) */ {
- unsigned r_address; /* address which is relocated */
- unsigned r_symbolnum:24; /* local symbol ordinal */
- unsigned r_pcrel : 1; /* was relocated pc relative already */
- unsigned r_length : 2; /* 0=byte, 1=word, 2=long */
- unsigned r_extern : 1; /* does not include value of sym referenced */
- unsigned r_baserel : 1; /* linkage table relative */
- unsigned r_jmptable : 1; /* pc-relative to jump table */
- unsigned r_relative : 1; /* relative relocation */
- unsigned : 1; /* <unused> */
- } RINFO_68K;
- typedef enum /* RTYPE_SPARC - sparc relocation types */
- {
- RELOC_8, RELOC_16, RELOC_32, /* simplest relocs */
- RELOC_DISP8, RELOC_DISP16, RELOC_DISP32, /* Disp's (pc-rel) */
- RELOC_WDISP30, RELOC_WDISP22, /* SR word disp's */
- RELOC_HI22, RELOC_22, /* SR 22-bit relocs */
- RELOC_13, RELOC_LO10, /* SR 13&10-bit relocs*/
- RELOC_SFA_BASE, RELOC_SFA_OFF13, /* SR S.F.A. relocs */
- RELOC_BASE10, RELOC_BASE13, RELOC_BASE22, /* base_relative pic */
- RELOC_PC10, RELOC_PC22, /* special pc-rel pic */
- RELOC_JMP_TBL, /* jmp_tbl_rel in pic */
- RELOC_SEGOFF16, /* ShLib offset-in-seg*/
- RELOC_GLOB_DAT, RELOC_JMP_SLOT, RELOC_RELATIVE /* rtld relocs */
- } RTYPE_SPARC;
- typedef struct /* RINFO_SPARC - sparc reloc datum (a_machtype == M_SPARC) */
- {
- unsigned r_address; /* relocation addr (offset in segment)*/
- unsigned r_index :24; /* segment index or symbol index */
- unsigned r_extern : 1; /* if F, r_index==SEG#; if T, SYM idx */
- unsigned : 2; /* <unused> */
- unsigned r_type : 5; /* type of relocation to perform */
- long r_addend; /* addend for relocation value */
- } RINFO_SPARC;
- typedef struct /* RINFO_MIPS - mips reloc datum (a_machtype == M_R3000) */
- {
- int r_address; /* address which is relocated */
- unsigned int
- r_symbolnum:24, /* local symbol ordinal */
- r_pcrel:1, /* was relocated pc relative already */
- r_length:2, /* 0=byte, 1=word, 2=long */
- r_extern:1, /* does not include value of sym referenced */
- r_type:4; /* relocation type */
- } RINFO_MIPS;
- /*
- * Format of a symbol table entry; this file is included by <a.out.h>
- * and should be used if you aren't interested the a.out header
- * or relocation information.
- */
- struct nlist
- {
- union
- {
- char *n_name; /* for use when in-core */
- long n_strx; /* index into file string table */
- } n_un;
- unsigned char n_type; /* type flag, i.e. N_TEXT etc; see below */
- char n_other; /* unused */
- short n_desc; /* see <stab.h> */
- unsigned long n_value; /* value of this symbol (or sdb offset) */
- };
- #define n_hash n_desc /* used internally by ld */
- /*
- * Simple values for n_type.
- */
- #define N_UNDF 0x0 /* undefined */
- #define N_ABS 0x2 /* absolute */
- #define N_TEXT 0x4 /* text */
- #define N_DATA 0x6 /* data */
- #define N_BSS 0x8 /* bss */
- #define N_COMM 0x12 /* common (internal to ld) */
- #define N_FN 0x1f /* file name symbol */
- #define N_EXT 01 /* external bit, or'ed in */
- #define N_TYPE 0x1e /* mask for all the type bits */
- /*
- * Sdb entries have some of the N_STAB bits set.
- * These are given in <stab.h>
- */
- #define N_STAB 0xe0 /* if any of these bits set, a SDB entry */
- /*
- * Format for namelist values.
- */
- #define N_FORMAT "%08x"
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCa_outh */