99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
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/* $Id: a.out.h,v 1.13 2000/01/09 10:46:53 anton Exp $ */
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#ifndef __SPARC_A_OUT_H__
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#define __SPARC_A_OUT_H__
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#define SPARC_PGSIZE 0x2000 /* Thanks to the sun4 architecture... */
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#define SEGMENT_SIZE SPARC_PGSIZE /* whee... */
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struct exec {
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unsigned char a_dynamic:1; /* A __DYNAMIC is in this image */
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unsigned char a_toolversion:7;
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unsigned char a_machtype;
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unsigned short a_info;
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unsigned long a_text; /* length of text, in bytes */
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unsigned long a_data; /* length of data, in bytes */
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unsigned long a_bss; /* length of bss, in bytes */
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unsigned long a_syms; /* length of symbol table, in bytes */
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unsigned long a_entry; /* where program begins */
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unsigned long a_trsize;
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unsigned long a_drsize;
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};
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/* Where in the file does the text information begin? */
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#define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
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/* Where do the Symbols start? */
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#define N_SYMOFF(x) (N_TXTOFF(x) + (x).a_text + \
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(x).a_data + (x).a_trsize + \
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(x).a_drsize)
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/* Where does text segment go in memory after being loaded? */
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#define N_TXTADDR(x) (((N_MAGIC(x) == ZMAGIC) && \
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((x).a_entry < SPARC_PGSIZE)) ? \
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0 : SPARC_PGSIZE)
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/* And same for the data segment.. */
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#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ? \
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(N_TXTADDR(x) + (x).a_text) \
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: (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
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#define N_TRSIZE(a) ((a).a_trsize)
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#define N_DRSIZE(a) ((a).a_drsize)
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#define N_SYMSIZE(a) ((a).a_syms)
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/*
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* Sparc relocation types
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*/
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enum reloc_type
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{
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RELOC_8,
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RELOC_16,
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RELOC_32, /* simplest relocs */
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RELOC_DISP8,
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RELOC_DISP16,
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RELOC_DISP32, /* Disp's (pc-rel) */
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RELOC_WDISP30,
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RELOC_WDISP22, /* SR word disp's */
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RELOC_HI22,
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RELOC_22, /* SR 22-bit relocs */
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RELOC_13,
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RELOC_LO10, /* SR 13&10-bit relocs */
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RELOC_SFA_BASE,
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RELOC_SFA_OFF13, /* SR S.F.A. relocs */
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RELOC_BASE10,
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RELOC_BASE13,
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RELOC_BASE22, /* base_relative pic */
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RELOC_PC10,
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RELOC_PC22, /* special pc-rel pic */
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RELOC_JMP_TBL, /* jmp_tbl_rel in pic */
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RELOC_SEGOFF16, /* ShLib offset-in-seg */
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RELOC_GLOB_DAT,
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RELOC_JMP_SLOT,
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RELOC_RELATIVE /* rtld relocs */
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};
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/*
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* Format of a relocation datum.
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*/
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struct relocation_info /* used when header.a_machtype == M_SPARC */
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{
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unsigned long r_address; /* relocation addr */
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unsigned int r_index:24; /* segment index or symbol index */
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unsigned int r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
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int r_pad:2; /* <unused> */
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enum reloc_type r_type:5; /* type of relocation to perform */
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long r_addend; /* addend for relocation value */
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};
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#define N_RELOCATION_INFO_DECLARED 1
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#ifdef __KERNEL__
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#include <asm/page.h>
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#define STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
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#endif /* __KERNEL__ */
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#endif /* __SPARC_A_OUT_H__ */
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