projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 20e9ef9e SL |
1 | /* scnhdr.h 5.1 87/11/15 */ |
| 2 | /* @(#)scnhdr.h 2.2 12/15/82 */ | |
| 3 | ||
| 4 | struct scnhdr { | |
| 5 | char s_name[8]; /* section name */ | |
| 6 | long s_paddr; /* physical address */ | |
| 7 | long s_vaddr; /* virtual address */ | |
| 8 | long s_size; /* section size */ | |
| 9 | long s_scnptr; /* file ptr to raw data for section */ | |
| 10 | long s_relptr; /* file ptr to relocation */ | |
| 11 | long s_lnnoptr; /* file ptr to line numbers */ | |
| 12 | unsigned short s_nreloc; /* number of relocation entries */ | |
| 13 | unsigned short s_nlnno; /* number of line number entries */ | |
| 14 | long s_flags; /* flags */ | |
| 15 | }; | |
| 16 | ||
| 17 | #define SCNHDR struct scnhdr | |
| 18 | #define SCNHSZ sizeof(SCNHDR) | |
| 19 | ||
| 20 | ||
| 21 | ||
| 22 | ||
| 23 | /* | |
| 24 | * Define constants for names of "special" sections | |
| 25 | */ | |
| 26 | ||
| 27 | #define _TEXT ".text" | |
| 28 | #define _DATA ".data" | |
| 29 | #define _BSS ".bss" | |
| 30 | #define _TV ".tv" | |
| 31 | ||
| 32 | ||
| 33 | ||
| 34 | ||
| 35 | /* | |
| 36 | * The low 4 bits of s_flags is used as a section "type" | |
| 37 | */ | |
| 38 | ||
| 39 | #define STYP_REG 0x00 /* "regular" section: | |
| 40 | allocated, relocated, loaded */ | |
| 41 | #define STYP_DSECT 0x01 /* "dummy" section: | |
| 42 | not allocated, relocated, | |
| 43 | not loaded */ | |
| 44 | #define STYP_NOLOAD 0x02 /* "noload" section: | |
| 45 | allocated, relocated, | |
| 46 | not loaded */ | |
| 47 | #define STYP_GROUP 0x04 /* "grouped" section: | |
| 48 | formed of input sections */ | |
| 49 | #define STYP_PAD 0x08 /* "padding" section: | |
| 50 | not allocated, not relocated, | |
| 51 | loaded */ | |
| 52 | #define STYP_COPY 0x10 /* "copy" section: | |
| 53 | for decision function used | |
| 54 | by field update; not | |
| 55 | allocated, not relocated, | |
| 56 | loaded; reloc & lineno | |
| 57 | entries processed normally */ | |
| 58 | #define STYP_TEXT 0x20 /* section contains text only */ | |
| 59 | #define STYP_DATA 0x40 /* section contains data only */ | |
| 60 | #define STYP_BSS 0x80 /* section contains bss only */ | |
| 61 | ||
| 62 | /* | |
| 63 | * In a minimal file or an update file, a new function | |
| 64 | * (as compared with a replaced function) is indicated by S_NEWFCN | |
| 65 | */ | |
| 66 | ||
| 67 | #define S_NEWFCN 0x10 | |
| 68 | ||
| 69 | /* | |
| 70 | * In 3b Update Files (output of ogen), sections which appear in SHARED | |
| 71 | * segments of the Pfile will have the S_SHRSEG flag set by ogen, to inform | |
| 72 | * dufr that updating 1 copy of the proc. will update all process invocations. | |
| 73 | */ | |
| 74 | ||
| 75 | #define S_SHRSEG 0x20 | |
| 76 | ||
| 77 | ||
| 78 |