| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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__ */ |