1 /* NDS32 ELF support for BFD.
2    Copyright (C) 2012-2016 Free Software Foundation, Inc.
3    Contributed by Andes Technology Corporation.
4 
5    This file is part of BFD, the Binary File Descriptor library.
6 
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 3 of the License, or
10    (at your option) any later version.
11 
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16 
17    You should have received a copy of the GNU General Public License
18    along with this program; if not, write to the Free Software
19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
20    02110-1301, USA.  */
21 
22 #ifndef _ELF_NDS32_H
23 #define _ELF_NDS32_H
24 
25 #include "elf/reloc-macros.h"
26 
27 /* Relocations.  */
28 START_RELOC_NUMBERS (elf_nds32_reloc_type)
29   RELOC_NUMBER (R_NDS32_NONE, 0)
30   /* REL relocations.  */
31   RELOC_NUMBER (R_NDS32_16, 1)
32   RELOC_NUMBER (R_NDS32_32, 2)
33   RELOC_NUMBER (R_NDS32_20, 3)
34   RELOC_NUMBER (R_NDS32_9_PCREL, 4)
35   RELOC_NUMBER (R_NDS32_15_PCREL, 5)
36   RELOC_NUMBER (R_NDS32_17_PCREL, 6)
37   RELOC_NUMBER (R_NDS32_25_PCREL, 7)
38   RELOC_NUMBER (R_NDS32_HI20, 8)
39   RELOC_NUMBER (R_NDS32_LO12S3, 9)
40   RELOC_NUMBER (R_NDS32_LO12S2, 10)
41   RELOC_NUMBER (R_NDS32_LO12S1, 11)
42   RELOC_NUMBER (R_NDS32_LO12S0, 12)
43   RELOC_NUMBER (R_NDS32_SDA15S3, 13)
44   RELOC_NUMBER (R_NDS32_SDA15S2, 14)
45   RELOC_NUMBER (R_NDS32_SDA15S1, 15)
46   RELOC_NUMBER (R_NDS32_SDA15S0, 16)
47   RELOC_NUMBER (R_NDS32_GNU_VTINHERIT, 17)
48   RELOC_NUMBER (R_NDS32_GNU_VTENTRY, 18)
49 
50   /* RELA relocations.  */
51   RELOC_NUMBER (R_NDS32_16_RELA, 19)
52   RELOC_NUMBER (R_NDS32_32_RELA, 20)
53   RELOC_NUMBER (R_NDS32_20_RELA, 21)
54   RELOC_NUMBER (R_NDS32_9_PCREL_RELA, 22)
55   RELOC_NUMBER (R_NDS32_15_PCREL_RELA, 23)
56   RELOC_NUMBER (R_NDS32_17_PCREL_RELA, 24)
57   RELOC_NUMBER (R_NDS32_25_PCREL_RELA, 25)
58   RELOC_NUMBER (R_NDS32_HI20_RELA, 26)
59   RELOC_NUMBER (R_NDS32_LO12S3_RELA, 27)
60   RELOC_NUMBER (R_NDS32_LO12S2_RELA, 28)
61   RELOC_NUMBER (R_NDS32_LO12S1_RELA, 29)
62   RELOC_NUMBER (R_NDS32_LO12S0_RELA, 30)
63   RELOC_NUMBER (R_NDS32_SDA15S3_RELA, 31)
64   RELOC_NUMBER (R_NDS32_SDA15S2_RELA, 32)
65   RELOC_NUMBER (R_NDS32_SDA15S1_RELA, 33)
66   RELOC_NUMBER (R_NDS32_SDA15S0_RELA, 34)
67   RELOC_NUMBER (R_NDS32_RELA_GNU_VTINHERIT, 35)
68   RELOC_NUMBER (R_NDS32_RELA_GNU_VTENTRY, 36)
69 
70   RELOC_NUMBER (R_NDS32_GOT20, 37)
71   RELOC_NUMBER (R_NDS32_25_PLTREL, 38)
72   RELOC_NUMBER (R_NDS32_COPY, 39)
73   RELOC_NUMBER (R_NDS32_GLOB_DAT, 40)
74   RELOC_NUMBER (R_NDS32_JMP_SLOT, 41)
75   RELOC_NUMBER (R_NDS32_RELATIVE, 42)
76   RELOC_NUMBER (R_NDS32_GOTOFF, 43)
77   RELOC_NUMBER (R_NDS32_GOTPC20, 44)
78   RELOC_NUMBER (R_NDS32_GOT_HI20, 45)
79   RELOC_NUMBER (R_NDS32_GOT_LO12, 46)
80   RELOC_NUMBER (R_NDS32_GOTPC_HI20, 47)
81   RELOC_NUMBER (R_NDS32_GOTPC_LO12, 48)
82   RELOC_NUMBER (R_NDS32_GOTOFF_HI20, 49)
83   RELOC_NUMBER (R_NDS32_GOTOFF_LO12, 50)
84   RELOC_NUMBER (R_NDS32_INSN16, 51)
85   RELOC_NUMBER (R_NDS32_LABEL, 52)
86   RELOC_NUMBER (R_NDS32_LONGCALL1, 53)
87   RELOC_NUMBER (R_NDS32_LONGCALL2, 54)
88   RELOC_NUMBER (R_NDS32_LONGCALL3, 55)
89   RELOC_NUMBER (R_NDS32_LONGJUMP1, 56)
90   RELOC_NUMBER (R_NDS32_LONGJUMP2, 57)
91   RELOC_NUMBER (R_NDS32_LONGJUMP3, 58)
92   RELOC_NUMBER (R_NDS32_LOADSTORE, 59)
93   RELOC_NUMBER (R_NDS32_9_FIXED_RELA, 60)
94   RELOC_NUMBER (R_NDS32_15_FIXED_RELA, 61)
95   RELOC_NUMBER (R_NDS32_17_FIXED_RELA, 62)
96   RELOC_NUMBER (R_NDS32_25_FIXED_RELA, 63)
97   RELOC_NUMBER (R_NDS32_PLTREL_HI20, 64)	/* This is obsoleted.  */
98   RELOC_NUMBER (R_NDS32_PLTREL_LO12, 65)	/* This is obsoleted.  */
99   RELOC_NUMBER (R_NDS32_PLT_GOTREL_HI20, 66)
100   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO12, 67)
101   RELOC_NUMBER (R_NDS32_SDA12S2_DP_RELA, 68)
102   RELOC_NUMBER (R_NDS32_SDA12S2_SP_RELA, 69)
103   RELOC_NUMBER (R_NDS32_LO12S2_DP_RELA, 70)
104   RELOC_NUMBER (R_NDS32_LO12S2_SP_RELA, 71)
105   RELOC_NUMBER (R_NDS32_LO12S0_ORI_RELA, 72)
106   RELOC_NUMBER (R_NDS32_SDA16S3_RELA, 73)
107   RELOC_NUMBER (R_NDS32_SDA17S2_RELA, 74)
108   RELOC_NUMBER (R_NDS32_SDA18S1_RELA, 75)
109   RELOC_NUMBER (R_NDS32_SDA19S0_RELA, 76)
110   RELOC_NUMBER (R_NDS32_DWARF2_OP1_RELA, 77)
111   RELOC_NUMBER (R_NDS32_DWARF2_OP2_RELA, 78)
112   RELOC_NUMBER (R_NDS32_DWARF2_LEB_RELA, 79)
113   RELOC_NUMBER (R_NDS32_UPDATE_TA_RELA, 80)	/* This is obsoleted.  */
114   RELOC_NUMBER (R_NDS32_9_PLTREL, 81)
115   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO20, 82)
116   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO15, 83)
117   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO19, 84)
118   RELOC_NUMBER (R_NDS32_GOT_LO15, 85)
119   RELOC_NUMBER (R_NDS32_GOT_LO19, 86)
120   RELOC_NUMBER (R_NDS32_GOTOFF_LO15, 87)
121   RELOC_NUMBER (R_NDS32_GOTOFF_LO19, 88)
122   RELOC_NUMBER (R_NDS32_GOT15S2_RELA, 89)
123   RELOC_NUMBER (R_NDS32_GOT17S2_RELA, 90)
124   RELOC_NUMBER (R_NDS32_5_RELA, 91)
125   RELOC_NUMBER (R_NDS32_10_UPCREL_RELA, 92)	/* This is obsoleted.  */
126   RELOC_NUMBER (R_NDS32_SDA_FP7U2_RELA, 93)
127   RELOC_NUMBER (R_NDS32_WORD_9_PCREL_RELA, 94)
128   RELOC_NUMBER (R_NDS32_25_ABS_RELA, 95)
129   RELOC_NUMBER (R_NDS32_17IFC_PCREL_RELA, 96)
130   RELOC_NUMBER (R_NDS32_10IFCU_PCREL_RELA, 97)
131   RELOC_NUMBER (R_NDS32_TLS_LE_HI20, 98)
132   RELOC_NUMBER (R_NDS32_TLS_LE_LO12, 99)
133   RELOC_NUMBER (R_NDS32_TLS_IE_HI20, 100)
134   RELOC_NUMBER (R_NDS32_TLS_IE_LO12S2, 101)
135   RELOC_NUMBER (R_NDS32_TLS_TPOFF, 102)
136   RELOC_NUMBER (R_NDS32_TLS_LE_20, 103)
137   RELOC_NUMBER (R_NDS32_TLS_LE_15S0, 104)
138   RELOC_NUMBER (R_NDS32_TLS_LE_15S1, 105)
139   RELOC_NUMBER (R_NDS32_TLS_LE_15S2, 106)
140   RELOC_NUMBER (R_NDS32_LONGCALL4, 107)
141   RELOC_NUMBER (R_NDS32_LONGCALL5, 108)
142   RELOC_NUMBER (R_NDS32_LONGCALL6, 109)
143   RELOC_NUMBER (R_NDS32_LONGJUMP4, 110)
144   RELOC_NUMBER (R_NDS32_LONGJUMP5, 111)
145   RELOC_NUMBER (R_NDS32_LONGJUMP6, 112)
146   RELOC_NUMBER (R_NDS32_LONGJUMP7, 113)
147 
148   RELOC_NUMBER (R_NDS32_RELAX_ENTRY, 192)
149   RELOC_NUMBER (R_NDS32_GOT_SUFF, 193)
150   RELOC_NUMBER (R_NDS32_GOTOFF_SUFF, 194)
151   RELOC_NUMBER (R_NDS32_PLT_GOT_SUFF, 195)
152   RELOC_NUMBER (R_NDS32_MULCALL_SUFF, 196)	/* This is obsoleted.  */
153   RELOC_NUMBER (R_NDS32_PTR, 197)
154   RELOC_NUMBER (R_NDS32_PTR_COUNT, 198)
155   RELOC_NUMBER (R_NDS32_PTR_RESOLVED, 199)
156   RELOC_NUMBER (R_NDS32_PLTBLOCK, 200)		/* This is obsoleted.  */
157   RELOC_NUMBER (R_NDS32_RELAX_REGION_BEGIN, 201)
158   RELOC_NUMBER (R_NDS32_RELAX_REGION_END, 202)
159   RELOC_NUMBER (R_NDS32_MINUEND, 203)
160   RELOC_NUMBER (R_NDS32_SUBTRAHEND, 204)
161   RELOC_NUMBER (R_NDS32_DIFF8, 205)
162   RELOC_NUMBER (R_NDS32_DIFF16, 206)
163   RELOC_NUMBER (R_NDS32_DIFF32, 207)
164   RELOC_NUMBER (R_NDS32_DIFF_ULEB128, 208)
165   RELOC_NUMBER (R_NDS32_DATA, 209)
166   RELOC_NUMBER (R_NDS32_TRAN, 210)
167   RELOC_NUMBER (R_NDS32_TLS_LE_ADD, 211)
168   RELOC_NUMBER (R_NDS32_TLS_LE_LS, 212)
169   RELOC_NUMBER (R_NDS32_EMPTY, 213)
170 
171 END_RELOC_NUMBERS (R_NDS32_max)
172 
173 /* Processor specific section indices.  These sections do not actually
174    exist.  Symbols with a st_shndx field corresponding to one of these
175    values have a special meaning.  */
176 
177 /* Processor specific flags for the ELF header e_flags field.
178 
179    31   28 27		      8 7   4 3       0
180    ---------------------------------------------
181    | ARCH | CONFUGURAION FIELD | ABI | ELF_VER |
182    ---------------------------------------------  */
183 
184 /* Architechure definition.  */
185 
186 /* 4-bit (b31-b28) nds32 architecture field.
187    We can have up to 15 architectures; 0000 is for unknown.  */
188 #define EF_NDS_ARCH				0xF0000000
189 #define EF_NDS_ARCH_SHIFT			28
190 /* There could be more architectures. For now, only n1 and n1h.  */
191 #define E_NDS_ARCH_STAR_RESERVED		0x00000000
192 #define E_NDS_ARCH_STAR_V1_0			0x10000000
193 #define E_NDS_ARCH_STAR_V2_0			0x20000000
194 #define E_NDS_ARCH_STAR_V3_0			0x30000000
195 #define E_NDS_ARCH_STAR_V3_M			0x40000000
196 #define E_NDS_ARCH_STAR_V0_9			0x90000000	/* Obsoleted.  */
197 /* n1 code.  */
198 #define E_N1_ARCH			E_NDS_ARCH_STAR_V0_9
199 /* n1h code.  */
200 #define E_N1H_ARCH			E_NDS_ARCH_STAR_V1_0
201 
202 
203 /* Configuration field definitioans.  */
204 #define EF_NDS_INST				0x0FFFFF00
205 
206 /* E_NDS_ARCH_STAR_V1_0 configuration fields.
207 
208    E_NDS_ARCH_STAR_V2_0 configuration fields.
209    These are discarded in v2.
210      * E_NDS32_HAS_MFUSR_PC_INST	0x00000100
211      * E_NDS32_HAS_DIV_INST		0x00002000
212      * E_NDS32_HAS_NO_MAC_INST		0x00100000
213    These are added in v2.
214      * E_NDS32_HAS_DIV_DX_INST		0x00002000
215      * E_NDS32_HAS_MAC_DX_INST		0x00100000  */
216 
217 /* MFUSR rt, PC and correct ISYNC, MSYNC instructions.
218    Old N1213HC has no such instructions.  */
219 #define E_NDS32_HAS_MFUSR_PC_INST		0x00000100 /* Reclaimed.  */
220 #define E_NDS32_HAS_EX9_INST			0x00000100 /* v3, ELF 1.4.  */
221 /* C/C++ performance extension instructions.  */
222 #define E_NDS32_HAS_EXT_INST			0x00000200
223 /* Performance extension set II instructions.  */
224 #define E_NDS32_HAS_EXT2_INST			0x00000400
225 /* Single precision Floating point processor instructions.  */
226 #define E_NDS32_HAS_FPU_INST			0x00000800
227 /* Audio instructions with 32-bit audio dx.lo register.  */
228 #define E_NDS32_HAS_AUDIO_INST			0x00001000
229 /* DIV instructions.  */
230 #define E_NDS32_HAS_DIV_INST			0x00002000 /* Reclaimed.  */
231 /* DIV instructions using d0/d1.  */
232 #define E_NDS32_HAS_DIV_DX_INST			0x00002000 /* v2.  */
233 /* 16-bit instructions.  */
234 #define E_NDS32_HAS_16BIT_INST			0x00004000 /* Reclaimed.  */
235 #define E_NDS32_HAS_IFC_INST			0x00004000 /* v3, ELF 1.4.  */
236 /* String operation instructions.  */
237 #define E_NDS32_HAS_STRING_INST			0x00008000
238 /* Reduced register file.  */
239 #define E_NDS32_HAS_REDUCED_REGS		0x00010000
240 /* Video instructions.  */
241 #define E_NDS32_HAS_VIDEO_INST			0x00020000 /* Reclaimed.  */
242 #define E_NDS32_HAS_SATURATION_INST		0x00020000 /* v3, ELF 1.4.  */
243 /* Encription instructions.  */
244 #define E_NDS32_HAS_ENCRIPT_INST		0x00040000
245 /* Doulbe Precision Floating point processor instructions.  */
246 #define E_NDS32_HAS_FPU_DP_INST			0x00080000
247 /* No MAC instruction used.  */
248 #define E_NDS32_HAS_NO_MAC_INST			0x00100000 /* Reclaimed when V2/V3.  */
249 /* MAC instruction using d0/d1.  */
250 #define E_NDS32_HAS_MAC_DX_INST			0x00100000 /* v2.  */
251 /* L2 cache instruction.  */
252 #define E_NDS32_HAS_L2C_INST			0x00200000
253 /* FPU registers configuration when FPU SP/DP presents; 0x00c00000.  */
254 #define E_NDS32_FPU_REG_CONF_SHIFT		22
255 #define E_NDS32_FPU_REG_CONF			(0x3 << E_NDS32_FPU_REG_CONF_SHIFT)
256 #define E_NDS32_FPU_REG_8SP_4DP			0x0
257 #define E_NDS32_FPU_REG_16SP_8DP		0x1
258 #define E_NDS32_FPU_REG_32SP_16DP		0x2
259 #define E_NDS32_FPU_REG_32SP_32DP		0x3
260 /* FPU MAC instruction used.  */
261 #define E_NDS32_HAS_FPU_MAC_INST		0x01000000
262 /* <<<Empty Check>>>.  */
263 #define E_NDS32_NULL				0x02000000
264 /* PIC enabled.  */
265 #define E_NDS32_HAS_PIC				0x04000000
266 /* Use custom section.  */
267 #define E_NDS32_HAS_CUSTOM_SEC			0x08000000
268 
269 /* 4-bit for ABI signature, allow up to 16 ABIs
270    0: for OLD ABI V0, phase out
271    1: for V1 , starting with V0 toolchain
272    2: for V2
273    3: for V2FP (fs0, fs1 as function parameter)
274    4: for AABI  */
275 /* Only old N1213HC use V0.
276    New ABI is used due to return register is changed to r0 from r5.  */
277 #define EF_NDS_ABI				0x000000F0
278 #define EF_NDS_ABI_SHIFT			4
279 #define E_NDS_ABI_V0				0x00000000
280 #define E_NDS_ABI_V1				0x00000010
281 #define E_NDS_ABI_V2				0x00000020
282 #define E_NDS_ABI_V2FP				0x00000030
283 #define E_NDS_ABI_AABI				0x00000040
284 #define E_NDS_ABI_V2FP_PLUS			0x00000050
285 
286 /* This flag signifies the version of Andes ELF.
287    Some more information may exist somewhere which is TBD.  */
288 #define EF_NDS32_ELF_VERSION			0x0000000F
289 #define EF_NDS32_ELF_VERSION_SHIFT		0
290 
291 /* Andes ELF Version 1.3 and before.  */
292 #define E_NDS32_ELF_VER_1_2			0x0
293 /* Andes ELF Version 1.31.  */
294 #define E_NDS32_ELF_VER_1_3			0x1
295 /* Andes ELF Version 1.4. Change the way we fix .debug_* and .gcc_except_table.
296    Change three bit for EX9, IFC and SAT.  */
297 #define E_NDS32_ELF_VER_1_4			0x2
298 
299 #endif
300