projects / unix-history / blame
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|---|---|---|
| e3d866b1 CT |
1 | /* |
| 2 | * Copyright (c) 1992 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This software was developed by the Computer Systems Engineering group | |
| 6 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and | |
| 7 | * contributed to Berkeley. | |
| 8 | * | |
| b480239a KB |
9 | * All advertising materials mentioning features or use of this software |
| 10 | * must display the following acknowledgement: | |
| 11 | * This product includes software developed by the University of | |
| 1869bdc0 | 12 | * California, Lawrence Berkeley Laboratory. |
| b480239a | 13 | * |
| e3d866b1 CT |
14 | * %sccs.include.redist.c% |
| 15 | * | |
| 1869bdc0 | 16 | * @(#)reloc.h 7.3 (Berkeley) %G% |
| e3d866b1 | 17 | * |
| 1869bdc0 | 18 | * from: $Header: reloc.h,v 1.7 92/11/26 02:04:45 torek Exp $ |
| e3d866b1 CT |
19 | */ |
| 20 | ||
| 21 | /* | |
| 22 | * SPARC relocations. The linker has, unfortunately, a large number | |
| 23 | * of link types. We do not do dynamic linking (yet?) but we define | |
| 24 | * the dynamic link types. | |
| 25 | */ | |
| 26 | enum reloc_type { | |
| 27 | /* architecturally-required types */ | |
| 28 | RELOC_8, /* 8-bit absolute */ | |
| 29 | RELOC_16, /* 16-bit absolute */ | |
| 30 | RELOC_32, /* 32-bit absolute */ | |
| 31 | RELOC_DISP8, /* 8-bit pc-relative */ | |
| 32 | RELOC_DISP16, /* 16-bit pc-relative */ | |
| 33 | RELOC_DISP32, /* 32-bit pc-relative */ | |
| 34 | RELOC_WDISP30, /* 30-bit pc-relative signed word */ | |
| 35 | RELOC_WDISP22, /* 22-bit pc-relative signed word */ | |
| 36 | RELOC_HI22, /* 22-bit `%hi' (ie, sethi %hi(X),%l0) */ | |
| 37 | RELOC_22, /* 22-bit non-%hi (i.e., sethi X,%l0) */ | |
| 38 | RELOC_13, /* 13-bit absolute */ | |
| 39 | RELOC_LO10, /* 10-bit `%lo' */ | |
| 40 | ||
| 41 | /* gnu ld understands some of these, but I do not */ | |
| 42 | RELOC_SFA_BASE, /* ? */ | |
| 43 | RELOC_SFA_OFF13, /* ? */ | |
| 44 | RELOC_BASE10, /* ? */ | |
| 45 | RELOC_BASE13, /* ? */ | |
| 46 | RELOC_BASE22, /* ? */ | |
| 47 | ||
| 48 | /* gnu ld does not use these but Sun linker does */ | |
| 49 | /* we define them anyway (note that they are included | |
| 50 | in the freely-available gas sources!) */ | |
| 51 | RELOC_PC10, /* ? */ | |
| 52 | RELOC_PC22, /* ? */ | |
| 53 | RELOC_JMP_TBL, /* ? */ | |
| 54 | RELOC_SEGOFF16, /* ? */ | |
| 55 | RELOC_GLOB_DAT, /* ? */ | |
| 56 | RELOC_JMP_SLOT, /* ? */ | |
| 57 | RELOC_RELATIVE, /* ? */ | |
| 58 | }; | |
| 59 | ||
| 60 | /* | |
| 61 | * SPARC relocation info. | |
| 62 | * | |
| 63 | * Symbol-relative relocation is done by: | |
| 64 | * 1. locating the appropriate symbol | |
| 65 | * 2. if defined, adding (value + r_addend), subtracting pc if pc-rel, | |
| 66 | * and then shifting down 2 or 10 or 13 if necessary. | |
| 67 | * The resulting value is then to be stuffed into the appropriate bits | |
| 68 | * in the object (the low 22, or the high 30, or ..., etc). | |
| 69 | */ | |
| 70 | struct reloc_info_sparc { | |
| 71 | u_long r_address; /* relocation addr (offset in segment) */ | |
| 72 | u_int r_index:24, /* segment (r_extern==0) or symbol index */ | |
| 73 | r_extern:1, /* if set, r_index is symbol index */ | |
| 74 | :2; /* unused */ | |
| 75 | enum reloc_type r_type:5; /* relocation type, from above */ | |
| 76 | long r_addend; /* value to add to symbol value */ | |
| 77 | }; |