1/* $NetBSD: elf_machdep.h,v 1.16 2019/12/08 21:46:03 uwe Exp $ */
2
3#ifndef _POWERPC_ELF_MACHDEP_H_
4#define _POWERPC_ELF_MACHDEP_H_
5
6#define ELF32_MACHDEP_ENDIANNESS ELFDATA2MSB
7#define ELF32_MACHDEP_ID_CASES \
8 case EM_PPC: \
9 break;
10
11#define ELF64_MACHDEP_ENDIANNESS ELFDATA2MSB
12#define ELF64_MACHDEP_ID_CASES \
13 case EM_PPC64: \
14 break;
15
16#define ELF32_MACHDEP_ID EM_PPC
17#define ELF64_MACHDEP_ID EM_PPC64
18
19
20#ifdef _LP64
21#define KERN_ELFSIZE 64
22#define ARCH_ELFSIZE 64 /* MD native binary size */
23#else
24#define KERN_ELFSIZE 32
25#define ARCH_ELFSIZE 32 /* MD native binary size */
26#endif
27
28/* Specify the value of _GLOBAL_OFFSET_TABLE_ */
29#define DT_PPC_GOT DT_LOPROC
30#define DT_PPC64_GLINK (DT_LOPROC + 0)
31#define DT_PPC64_OPD (DT_LOPROC + 1)
32#define DT_PPC64_OPDSZ (DT_LOPROC + 2)
33#define DT_PPC64_TLSOPT (DT_LOPROC + 3)
34
35// A = the addend used to compute the value of relocatable field
36// B = the base address of the shared object
37// G = offset into the global offset table
38// L = section offset or address of the procedure link table entry for the
39// symbol + addend
40// M = similar to G except the address which is stored may be the address of
41// the procedure linkage table entry for the symbol
42// P = the place (section offset or address) of the storage unit being
43// relocated (computed using r_offset)
44// R = the offset of the symbol with the section in which the symbol is defined
45// S = the value of the symbol whose index resides in the relocation entry
46//
47// @dtpmod
48// Computes the load module index of the load module that contains the
49// definition of sym. The addend, if present, is ignored.
50// @dtprel
51// Computes a dtv-relative displacement, the difference between the value of
52// S + A and the base address of the thread-local storage block that contains
53// the definition of the symbol, minus 0x8000.
54// @tprel
55// Computes a tp-relative displacement, the difference between the value of
56// S + A and the value of the thread pointer (r13).
57// @got@tlsgd
58// Allocates two contiguous entries in the GOT to hold a tls_index structure,
59// with values @dtpmod and @dtprel, and computes the offset to the first
60// entry relative to the TOC base (r2).
61// @got@tlsld
62// Allocates two contiguous entries in the GOT to hold a tls_index structure,
63// with values @dtpmod and zero, and computes the offset to the first entry
64// relative to the TOC base (r2).
65// @got@dtprel
66// Allocates an entry in the GOT with value @dtprel, and computes the offset
67// to the entry relative to the TOC base (r2).
68// @got@tprel
69// Allocates an entry in the GOT with value @tprel, and computes the offset
70// to the entry relative to the TOC base (r2).
71//
72// #lo(x) = (x & 0xffff)
73// #hi(x) = ((x >> 16) & 0xffff)
74// #ha(x) = (((x >> 16) + ((x & 0x8000) == 0x8000)) & 0xffff)
75// #higher(x) = ((x >> 32) & 0xffff)
76// #highera(x) =
77// (((x >> 32) + ((x & 0xffff8000) == 0xffff8000)) & 0xffff)
78// #highest(x) = ((x >> 48) & 0xffff)
79// #highesta(x) =
80// (((x >> 48) + ((x & 0xffffffff8000) == 0xffffffff8000)) & 0xffff)
81// .TOC. = base TOC base of TOC section for object being relocated
82
83#define R_PPC_NONE 0
84#define R_PPC_ADDR32 1 // S + A
85#define R_PPC_ADDR24 2 // (S + A) >> 2
86#define R_PPC_ADDR16 3 // S + A
87#define R_PPC_ADDR16_LO 4 // #lo(S + A)
88#define R_PPC_ADDR16_HI 5 // #hi(S + A)
89#define R_PPC_ADDR16_HA 6 // #ha(S + A)
90#define R_PPC_ADDR14 7 // (S + A) >> 2
91#define R_PPC_ADDR14_TAKEN 8 // (S + A) >> 2
92#define R_PPC_ADDR14_NTAKEN 9 // (S + A) >> 2
93#define R_PPC_REL24 10 // (S + A - P) >> 2
94#define R_PPC_REL14 11 // (S + A - P) >> 2
95#define R_PPC_REL14_TAKEN 12 // (S + A - P) >> 2
96#define R_PPC_REL14_NTAKEN 13 // (S + A - P) >> 2
97#define R_PPC_GOT16 14 // G + A
98#define R_PPC_GOT16_LO 15 // #lo(G + A)
99#define R_PPC_GOT16_HI 16 // #hi(G + A)
100#define R_PPC_GOT16_HA 17 // #ha(G + A)
101#define R_PPC_PLTREL24 18 // (L + A - P) >> 2
102#define R_PPC_COPY 19 // none
103#define R_PPC_GLOB_DAT 20 // S + A
104#define R_PPC_JMP_SLOT 21
105#define R_PPC_RELATIVE 22 // B + A
106#define R_PPC_LOCAL24PC 23 // (see R_PPC_REL24)
107#define R_PPC_UADDR32 24 // S + A
108#define R_PPC_UADDR16 25 // S + A
109#define R_PPC_REL32 26 // S + A - P
110#define R_PPC_PLT32 27 // L
111#define R_PPC_PLTREL 28 // L - P
112#define R_PPC_PLT16_LO 29 // #lo(L)
113#define R_PPC_PLT16_HI 30 // #hi(L)
114#define R_PPC_PLT16_HA 31 // #ha(L)
115#define R_PPC_SDAREL16 32 // S + A - _SDA_BASE_
116#define R_PPC_SECTOFF 33 // R + A
117#define R_PPC_SECTOFF_LO 34 // #lo(R + A)
118#define R_PPC_SECTOFF_HI 35 // #lo(R + A)
119#define R_PPC_SECTOFF_HA 36 // #ha(R + A)
120#define R_PPC_ADDR30 37 // (S + A - P) >> 2
121/* PPC64 relocations */
122#define R_PPC_ADDR64 38 // S + A
123#define R_PPC_ADDR16_HIGHER 39 // #higher(S + A)
124#define R_PPC_ADDR16_HIGHERA 40 // #highera(S + A)
125#define R_PPC_ADDR16_HIGHEST 41 // #highest(S + A)
126#define R_PPC_ADDR16_HIGHESTA 42 // #highesta(S + A)
127#define R_PPC_UADDR64 43 // S + A
128#define R_PPC_REL64 44 // S + A - P
129#define R_PPC_PLT64 45 // L
130#define R_PPC_PLTREL4 46 // L - P
131#define R_PPC_TOC16 47 // S + A - .TOC.
132#define R_PPC_TOC16_LO 48 // #lo(S + A - .TOC.)
133#define R_PPC_TOC16_HI 49 // #lo(S + A - .TOC.)
134#define R_PPC_TOC16_HA 50 // #ha(S + A - .TOC.)
135#define R_PPC_TOC 51 // .TOC.
136#define R_PPC_PLTGOT16 52 // M
137#define R_PPC_PLTGOT16_LO 53 // #lo(M)
138#define R_PPC_PLTGOT16_HI 54 // #lo(M)
139#define R_PPC_PLTGOT16_HA 55 // #ha(M)
140#define R_PPC_ADDR16_DS 56 // (S + A) >> 2
141#define R_PPC_ADDR16_LO_DS 57 // #lo(S + A) >> 2
142#define R_PPC_GOT16_DS 58 // G >> 2
143#define R_PPC_GOT16_LO_DS 59 // #lo(G) >> 2
144#define R_PPC_PLT16_LO_DS 60 // #lo(L) >> 2
145#define R_PPC_SECTOFF16_DS 61 // (R + A) >> 2
146#define R_PPC_SECTOFF16_LO_DS 62 // #lo(R + A) >> 2
147#define R_PPC_TOC16_DS 63 // (S + A - .TOC.) >> 2
148#define R_PPC_TOC16_LO_DS 64 // #lo(S + A - .TOC.) >> 2
149#define R_PPC_PLTGOT16_DS 65 // M >> 2
150#define R_PPC_PLTGOT16_LO_DS 66 // #lo(M) >> 2
151
152/* TLS relocations */
153#define R_PPC_TLS 67 // none
154
155#define R_PPC_DTPMOD 68
156#define R_PPC_TPREL16 69 // @tprel
157#define R_PPC_TPREL16_LO 70 // #lo(@tprel)
158#define R_PPC_TPREL16_HI 71 // #hi(@tprel)
159#define R_PPC_TPREL16_HA 72 // #ha(@tprel)
160#define R_PPC_TPREL 73 // @tprel
161#define R_PPC_DTPREL16 74 // @got@dtprel
162#define R_PPC_DTPREL16_LO 75 // #lo(@dtprel)
163#define R_PPC_DTPREL16_HI 76 // #hi(@dtprel)
164#define R_PPC_DTPREL16_HA 77 // #ha(@dtprel)
165#define R_PPC_DTPREL 78 // @dtprel
166
167#define R_PPC_GOT_TLSGD16 79 // @got@tlsgd
168#define R_PPC_GOT_TLSGD16_LO 80 // #lo(@got@tlsgd)
169#define R_PPC_GOT_TLSGD16_HI 81 // #hi(@got@tlsgd)
170#define R_PPC_GOT_TLSGD16_HA 82 // #ha(@got@tlsgd)
171#define R_PPC_GOT_TLSLD16 83 // @got@tlsld
172#define R_PPC_GOT_TLSLD16_LO 84 // #lo(@got@tlsld)
173#define R_PPC_GOT_TLSLD16_HI 85 // #hi(@got@tlsld)
174#define R_PPC_GOT_TLSLD16_HA 86 // #ha(@got@tlsld)
175
176#define R_PPC_GOT_TPREL16 87 // @got@tprel
177#define R_PPC_GOT_TPREL16_LO 88 // #lo(@got@tprel)
178#define R_PPC_GOT_TPREL16_HI 89 // #hi(@got@tprel)
179#define R_PPC_GOT_TPREL16_HA 90 // #ha(@got@tprel)
180#define R_PPC_GOT_DTPREL16 91 // @got@dtprel
181#define R_PPC_GOT_DTPREL16_LO 92 // #lo(@got@dtprel)
182#define R_PPC_GOT_DTPREL16_HI 93 // #hi(@got@dtprel)
183#define R_PPC_GOT_DTPREL16_HA 94 // #ha(@got@dtprel)
184#define R_PPC_TLSGD 95
185#define R_PPC_TLSLD 96
186
187/* PPC64 relocations */
188#define R_PPC_TPREL16_DS 95 // @tprel
189#define R_PPC_TPREL16_LO_DS 96 // #lo(@tprel)
190#define R_PPC_TPREL16_HIGHER 97 // #higher(@tprel)
191#define R_PPC_TPREL16_HIGHERA 98 // #highera(@tprel)
192#define R_PPC_TPREL16_HIGHEST 99 // #highest(@tprel)
193#define R_PPC_TPREL16_HIGHESTA 100 // #highesta(@tprel)
194
195#define R_PPC_DTPREL16_DS 101 // @dtprel
196#define R_PPC_DTPREL16_LO_DS 102 // #lo(@dtprel)
197#define R_PPC_DTPREL16_HIGHER 103 // #higher(@dtprel)
198#define R_PPC_DTPREL16_HIGHERA 104 // #highera(@dtprel)
199#define R_PPC_DTPREL16_HIGHEST 105 // #highest(@dtprel)
200#define R_PPC_DTPREL16_HIGHESTA 106 // #highesta(@dtprel)
201
202/* Indirect-function support */
203#define R_PPC_IRELATIVE 248
204
205/* Used for the secure-plt PIC code sequences */
206#define R_PPC_REL16 249 // S + A - P
207#define R_PPC_REL16_LO 250 // #lo(S + A - P)
208#define R_PPC_REL16_HI 251 // #hi(S + A - P)
209#define R_PPC_REL16_HA 252 // #ha(S + A - P)
210
211#define R_TYPE(name) __CONCAT(R_PPC_,name)
212
213#endif /* _POWERPC_ELF_MACHDEP_H_ */