1 /* $Id: a.out.h,v 1.8 2002/02/09 19:49:31 davem Exp $ */ 2 #ifndef __SPARC64_A_OUT_H__ 3 #define __SPARC64_A_OUT_H__ 4 5 #define SPARC_PGSIZE 0x2000 /* Thanks to the sun4 architecture... */ 6 #define SEGMENT_SIZE SPARC_PGSIZE /* whee... */ 7 8 #ifndef __ASSEMBLY__ 9 10 struct exec { 11 unsigned char a_dynamic:1; /* A __DYNAMIC is in this image */ 12 unsigned char a_toolversion:7; 13 unsigned char a_machtype; 14 unsigned short a_info; 15 unsigned int a_text; /* length of text, in bytes */ 16 unsigned int a_data; /* length of data, in bytes */ 17 unsigned int a_bss; /* length of bss, in bytes */ 18 unsigned int a_syms; /* length of symbol table, in bytes */ 19 unsigned int a_entry; /* where program begins */ 20 unsigned int a_trsize; 21 unsigned int a_drsize; 22 }; 23 24 #endif /* !__ASSEMBLY__ */ 25 26 /* Where in the file does the text information begin? */ 27 #define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec)) 28 29 /* Where do the Symbols start? */ 30 #define N_SYMOFF(x) (N_TXTOFF(x) + (x).a_text + \ 31 (x).a_data + (x).a_trsize + \ 32 (x).a_drsize) 33 34 /* Where does text segment go in memory after being loaded? */ 35 #define N_TXTADDR(x) (unsigned long)(((N_MAGIC(x) == ZMAGIC) && \ 36 ((x).a_entry < SPARC_PGSIZE)) ? \ 37 0 : SPARC_PGSIZE) 38 39 /* And same for the data segment.. */ 40 #define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ? \ 41 (N_TXTADDR(x) + (x).a_text) \ 42 : (unsigned long)(_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 43 44 #define N_TRSIZE(a) ((a).a_trsize) 45 #define N_DRSIZE(a) ((a).a_drsize) 46 #define N_SYMSIZE(a) ((a).a_syms) 47 48 #ifndef __ASSEMBLY__ 49 50 /* 51 * Sparc relocation types 52 */ 53 enum reloc_type 54 { 55 RELOC_8, 56 RELOC_16, 57 RELOC_32, /* simplest relocs */ 58 RELOC_DISP8, 59 RELOC_DISP16, 60 RELOC_DISP32, /* Disp's (pc-rel) */ 61 RELOC_WDISP30, 62 RELOC_WDISP22, /* SR word disp's */ 63 RELOC_HI22, 64 RELOC_22, /* SR 22-bit relocs */ 65 RELOC_13, 66 RELOC_LO10, /* SR 13&10-bit relocs */ 67 RELOC_SFA_BASE, 68 RELOC_SFA_OFF13, /* SR S.F.A. relocs */ 69 RELOC_BASE10, 70 RELOC_BASE13, 71 RELOC_BASE22, /* base_relative pic */ 72 RELOC_PC10, 73 RELOC_PC22, /* special pc-rel pic */ 74 RELOC_JMP_TBL, /* jmp_tbl_rel in pic */ 75 RELOC_SEGOFF16, /* ShLib offset-in-seg */ 76 RELOC_GLOB_DAT, 77 RELOC_JMP_SLOT, 78 RELOC_RELATIVE /* rtld relocs */ 79 }; 80 81 /* 82 * Format of a relocation datum. 83 */ 84 struct relocation_info /* used when header.a_machtype == M_SPARC */ 85 { 86 unsigned int r_address; /* relocation addr */ 87 unsigned int r_index:24; /* segment index or symbol index */ 88 unsigned int r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */ 89 int r_pad:2; /* <unused> */ 90 enum reloc_type r_type:5; /* type of relocation to perform */ 91 int r_addend; /* addend for relocation value */ 92 }; 93 94 #define N_RELOCATION_INFO_DECLARED 1 95 96 #ifdef __KERNEL__ 97 98 #define STACK_TOP32 ((1UL << 32UL) - PAGE_SIZE) 99 #define STACK_TOP64 (0x0000080000000000UL - (1UL << 32UL)) 100 101 #define STACK_TOP (test_thread_flag(TIF_32BIT) ? \ 102 STACK_TOP32 : STACK_TOP64) 103 104 #endif 105 106 #endif /* !(__ASSEMBLY__) */ 107 108 #endif /* !(__SPARC64_A_OUT_H__) */ 109