1 /* $Id: a.out.h,v 1.13 2000/01/09 10:46:53 anton Exp $ */ 2 #ifndef __SPARC_A_OUT_H__ 3 #define __SPARC_A_OUT_H__ 4 5 #define SPARC_PGSIZE 0x2000 /* Thanks to the sun4 architecture... */ 6 #define SEGMENT_SIZE SPARC_PGSIZE /* whee... */ 7 8 struct exec { 9 unsigned char a_dynamic:1; /* A __DYNAMIC is in this image */ 10 unsigned char a_toolversion:7; 11 unsigned char a_machtype; 12 unsigned short a_info; 13 unsigned long a_text; /* length of text, in bytes */ 14 unsigned long a_data; /* length of data, in bytes */ 15 unsigned long a_bss; /* length of bss, in bytes */ 16 unsigned long a_syms; /* length of symbol table, in bytes */ 17 unsigned long a_entry; /* where program begins */ 18 unsigned long a_trsize; 19 unsigned long a_drsize; 20 }; 21 22 /* Where in the file does the text information begin? */ 23 #define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec)) 24 25 /* Where do the Symbols start? */ 26 #define N_SYMOFF(x) (N_TXTOFF(x) + (x).a_text + \ 27 (x).a_data + (x).a_trsize + \ 28 (x).a_drsize) 29 30 /* Where does text segment go in memory after being loaded? */ 31 #define N_TXTADDR(x) (((N_MAGIC(x) == ZMAGIC) && \ 32 ((x).a_entry < SPARC_PGSIZE)) ? \ 33 0 : SPARC_PGSIZE) 34 35 /* And same for the data segment.. */ 36 #define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ? \ 37 (N_TXTADDR(x) + (x).a_text) \ 38 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 39 40 #define N_TRSIZE(a) ((a).a_trsize) 41 #define N_DRSIZE(a) ((a).a_drsize) 42 #define N_SYMSIZE(a) ((a).a_syms) 43 44 /* 45 * Sparc relocation types 46 */ 47 enum reloc_type 48 { 49 RELOC_8, 50 RELOC_16, 51 RELOC_32, /* simplest relocs */ 52 RELOC_DISP8, 53 RELOC_DISP16, 54 RELOC_DISP32, /* Disp's (pc-rel) */ 55 RELOC_WDISP30, 56 RELOC_WDISP22, /* SR word disp's */ 57 RELOC_HI22, 58 RELOC_22, /* SR 22-bit relocs */ 59 RELOC_13, 60 RELOC_LO10, /* SR 13&10-bit relocs */ 61 RELOC_SFA_BASE, 62 RELOC_SFA_OFF13, /* SR S.F.A. relocs */ 63 RELOC_BASE10, 64 RELOC_BASE13, 65 RELOC_BASE22, /* base_relative pic */ 66 RELOC_PC10, 67 RELOC_PC22, /* special pc-rel pic */ 68 RELOC_JMP_TBL, /* jmp_tbl_rel in pic */ 69 RELOC_SEGOFF16, /* ShLib offset-in-seg */ 70 RELOC_GLOB_DAT, 71 RELOC_JMP_SLOT, 72 RELOC_RELATIVE /* rtld relocs */ 73 }; 74 75 /* 76 * Format of a relocation datum. 77 */ 78 struct relocation_info /* used when header.a_machtype == M_SPARC */ 79 { 80 unsigned long r_address; /* relocation addr */ 81 unsigned int r_index:24; /* segment index or symbol index */ 82 unsigned int r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */ 83 int r_pad:2; /* <unused> */ 84 enum reloc_type r_type:5; /* type of relocation to perform */ 85 long r_addend; /* addend for relocation value */ 86 }; 87 88 #define N_RELOCATION_INFO_DECLARED 1 89 90 #ifdef __KERNEL__ 91 92 #include <asm/page.h> 93 94 #define STACK_TOP (PAGE_OFFSET - PAGE_SIZE) 95 96 #endif /* __KERNEL__ */ 97 98 #endif /* __SPARC_A_OUT_H__ */ 99