Commit | Line | Data |
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252b5132 RH |
1 | /* |
2 | * a.out specifics for Sequent Symmetry running Dynix 3.x | |
3 | */ | |
4 | #ifndef A_OUT_DYNIX3_H | |
5 | #define A_OUT_DYNIX3_H | |
6 | ||
7 | #define external_exec dynix_external_exec | |
8 | ||
9 | /* struct exec for Dynix 3 | |
10 | * | |
11 | * a_gdtbl and a_bootstrap are only for standalone binaries. | |
12 | * Shared data fields are not supported by the kernel as of Dynix 3.1, | |
13 | * but are supported by Dynix compiler programs. | |
14 | */ | |
15 | struct dynix_external_exec { | |
16 | unsigned char e_info[4]; | |
17 | unsigned char e_text[4]; | |
18 | unsigned char e_data[4]; | |
19 | unsigned char e_bss[4]; | |
20 | unsigned char e_syms[4]; | |
21 | unsigned char e_entry[4]; | |
22 | unsigned char e_trsize[4]; | |
23 | unsigned char e_drsize[4]; | |
24 | unsigned char e_g_code[8], e_g_data[8], e_g_desc[8]; | |
25 | unsigned char e_shdata[4]; | |
26 | unsigned char e_shbss[4]; | |
27 | unsigned char e_shdrsize[4]; | |
28 | unsigned char e_bootstrap[44]; | |
29 | unsigned char e_reserved[12]; | |
30 | unsigned char e_version[4]; | |
31 | }; | |
32 | ||
33 | #define EXEC_BYTES_SIZE (128) | |
34 | ||
35 | /* | |
36 | * All executables under Dynix are demand paged with read-only text, | |
37 | * Thus no NMAGIC. | |
38 | * | |
39 | * ZMAGIC has a page of 0s at virtual 0, | |
40 | * XMAGIC has an invalid page at virtual 0 | |
41 | */ | |
42 | #define OMAGIC 0x12eb /* .o */ | |
43 | #define ZMAGIC 0x22eb /* zero @ 0, demand load */ | |
44 | #define XMAGIC 0x32eb /* invalid @ 0, demand load */ | |
45 | #define SMAGIC 0x42eb /* standalone, not supported here */ | |
46 | ||
47 | #define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \ | |
48 | (ZMAGIC != N_MAGIC(x)) && \ | |
49 | (XMAGIC != N_MAGIC(x)) && \ | |
50 | (SMAGIC != N_MAGIC(x))) | |
51 | ||
52 | #define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0) | |
53 | ||
54 | #define N_TXTOFF(x) (EXEC_BYTES_SIZE) | |
55 | #define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x)) | |
56 | #define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data) | |
57 | #define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata) | |
58 | #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize) | |
59 | #define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize) | |
60 | #define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize) | |
61 | #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms) | |
62 | ||
63 | #define N_TXTADDR(x) \ | |
64 | (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \ | |
65 | : TEXT_START_ADDR + EXEC_BYTES_SIZE) | |
66 | ||
67 | #define N_TXTSIZE(x) \ | |
68 | (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \ | |
69 | : ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE)) | |
70 | ||
71 | #endif /* A_OUT_DYNIX3_H */ |