1 /* NDS32-specific support for 32-bit ELF.
2 Copyright (C) 2012-2015 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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
26 /* Constant values for assembler. */
29 /* Error code for assembling an instruction. */
34 NASM_ERR_OUT_OF_RANGE,
38 /* Results of parse_operand. */
43 /* Flags for open description. */
44 NASM_OPEN_ARCH_V1 = 0x0,
45 NASM_OPEN_ARCH_V2 = 0x1,
46 NASM_OPEN_ARCH_V3 = 0x2,
47 NASM_OPEN_ARCH_V3M = 0x3,
48 NASM_OPEN_ARCH_MASK = 0xf,
49 NASM_OPEN_REDUCED_REG = 0x10,
51 /* Common attributes. */
52 NASM_ATTR_ISA_V1 = 0x01,
53 NASM_ATTR_ISA_V2 = 0x02,
54 NASM_ATTR_ISA_V3 = 0x04,
55 NASM_ATTR_ISA_V3M = 0x08,
56 NASM_ATTR_ISA_ALL = 0x0f,
58 /* Attributes for instructions. */
59 NASM_ATTR_MAC = 0x0000100,
60 NASM_ATTR_DIV = 0x0000200,
61 NASM_ATTR_FPU = 0x0000400,
62 NASM_ATTR_FPU_SP_EXT = 0x0000800,
63 NASM_ATTR_FPU_DP_EXT = 0x0001000,
64 NASM_ATTR_STR_EXT = 0x0002000,
65 NASM_ATTR_PERF_EXT = 0x0004000,
66 NASM_ATTR_PERF2_EXT = 0x0008000,
67 NASM_ATTR_AUDIO_ISAEXT = 0x0010000,
68 NASM_ATTR_IFC_EXT = 0x0020000,
69 NASM_ATTR_EX9_EXT = 0x0040000,
70 NASM_ATTR_FPU_FMA = 0x0080000,
71 NASM_ATTR_DXREG = 0x0100000,
72 NASM_ATTR_BRANCH = 0x0200000,
73 NASM_ATTR_SATURATION_EXT = 0x0400000,
74 NASM_ATTR_PCREL = 0x0800000,
75 NASM_ATTR_GPREL = 0x1000000,
77 /* Attributes for relocations. */
78 NASM_ATTR_HI20 = 0x10000000,
79 NASM_ATTR_LO12 = 0x20000000,
80 NASM_ATTR_LO20 = 0x40000000,
82 /* Attributes for registers. */
83 NASM_ATTR_RDREG = 0x000100
88 /* This is a field (operand) of just a separator char. */
91 /* This operand is used for input or output. (define or use) */
97 /* Hardware resources. */
104 HW_CP, /* Co-processor ID. */
105 HW_CPR, /* Co-processor registers. */
106 HW_ABDIM, /* [ab][di]m? flag for LSMWA?. */
107 HW_ABM, /* [ab]m? flag for LSMWZB. */
128 /* TODO: Maybe we should add a new type to distinguish address and
129 const int. Only the former allows symbols and relocations. */
134 /* for audio-extension. */
147 N32_AEXT_AMAWBS = 0x0c,
161 /* Macro for instruction attribute. */
162 #define ATTR(attr) NASM_ATTR_ ## attr
164 #define ATTR_PCREL (ATTR (PCREL) | ATTR (BRANCH))
166 #define ATTR_ALL (ATTR (ISA_ALL))
167 #define ATTR_V2UP (ATTR_ALL & ~(ATTR (ISA_V1)))
168 #define ATTR_V3MUP (ATTR (ISA_V3) | ATTR (ISA_V3M))
169 #define ATTR_V3 (ATTR (ISA_V3))
170 #define ATTR_V3MEX_V1 (ATTR_ALL & ~(ATTR (ISA_V3M)))
171 #define ATTR_V3MEX_V2 (ATTR_V2UP & ~(ATTR (ISA_V3M)))
173 /* Lexical element in parsed syntax. */
176 /* Common header for hash entries. */
177 struct nds32_hash_entry
182 typedef struct nds32_keyword
189 typedef struct nds32_opcode
191 /* Opcode for the instruction. */
193 /* Human readable string of this instruction. */
194 const char *instruction;
195 /* Base value of this instruction. */
197 /* The byte-size of the instruction. */
199 /* Attributes of this instruction. */
201 /* Implicit define/use. */
203 /* Parsed string for assembling. */
205 /* Number of variant. */
207 /* Next form of the same mnemonic. */
208 struct nds32_opcode *next;
210 /* TODO: Extra constrains and verification.
211 For example, `mov55 $sp, $sp' is not allowed in v3. */
214 typedef struct nds32_asm_insn
216 /* Assembled instruction bytes. */
218 /* The opcode structure for this instruction. */
219 struct nds32_opcode *opcode;
220 /* The field need special fix-up, used for relocation. */
221 const struct nds32_field *field;
222 /* Attributes for relocation. */
224 /* Application-dependent data, e.g., expression. */
226 /* Input/output registers. */
230 typedef struct nds32_asm_desc
232 /* The callback provided by assembler user for parse an operand,
233 e.g., parse integer. */
234 int (*parse_operand) (struct nds32_asm_desc *,
235 struct nds32_asm_insn *,
238 /* Result of assembling. */
241 /* The mach for this assembling. */
247 /* The field information for an operand. */
248 typedef struct nds32_field
250 /* Name of the field. */
258 int (*parse) (struct nds32_asm_desc *,
259 struct nds32_asm_insn *,
263 extern void nds32_assemble (nds32_asm_desc_t *, nds32_asm_insn_t *, char *);
264 extern void nds32_asm_init (nds32_asm_desc_t *, int);
266 #define OP6(op6) (N32_OP6_ ## op6 << 25)
268 #define LSMW(sub) (OP6 (LSMW) | N32_LSMW_ ## sub)
269 #define JREG(sub) (OP6 (JREG) | N32_JREG_ ## sub)
270 #define JREG_RET (1 << 5)
271 #define JREG_IFC (1 << 6)
272 #define BR2(sub) (OP6 (BR2) | (N32_BR2_ ## sub << 16))
273 #define SIMD(sub) (OP6 (SIMD) | N32_SIMD_ ## sub)
274 #define ALU1(sub) (OP6 (ALU1) | N32_ALU1_ ## sub)
275 #define ALU2(sub) (OP6 (ALU2) | N32_ALU2_ ## sub)
276 #define MISC(sub) (OP6 (MISC) | N32_MISC_ ## sub)
277 #define MEM(sub) (OP6 (MEM) | N32_MEM_ ## sub)
278 #define FPU_RA_IMMBI(sub) (OP6 (sub) | __BIT (12))
279 #define FS1(sub) (OP6 (COP) | N32_FPU_FS1 | (N32_FPU_FS1_ ## sub << 6))
280 #define FS1_F2OP(sub) (OP6 (COP) | N32_FPU_FS1 | (N32_FPU_FS1_F2OP << 6) \
281 | (N32_FPU_FS1_F2OP_ ## sub << 10))
282 #define FS2(sub) (OP6 (COP) | N32_FPU_FS2 | (N32_FPU_FS2_ ## sub << 6))
283 #define FD1(sub) (OP6 (COP) | N32_FPU_FD1 | (N32_FPU_FD1_ ## sub << 6))
284 #define FD1_F2OP(sub) (OP6 (COP) | N32_FPU_FD1 | (N32_FPU_FD1_F2OP << 6) \
285 | (N32_FPU_FD1_F2OP_ ## sub << 10))
286 #define FD2(sub) (OP6 (COP) | N32_FPU_FD2 | (N32_FPU_FD2_ ## sub << 6))
287 #define MFCP(sub) (OP6 (COP) | N32_FPU_MFCP | (N32_FPU_MFCP_ ## sub << 6))
288 #define MFCP_XR(sub) (OP6 (COP) | N32_FPU_MFCP | (N32_FPU_MFCP_XR << 6) \
289 | (N32_FPU_MFCP_XR_ ## sub << 10))
290 #define MTCP(sub) (OP6 (COP) | N32_FPU_MTCP | (N32_FPU_MTCP_ ## sub << 6))
291 #define MTCP_XR(sub) (OP6 (COP) | N32_FPU_MTCP | (N32_FPU_MTCP_XR << 6) \
292 | (N32_FPU_MTCP_XR_ ## sub << 10))
293 #define FPU_MEM(sub) (OP6 (COP) | N32_FPU_ ## sub)
294 #define FPU_MEMBI(sub) (OP6 (COP) | N32_FPU_ ## sub | 0x1 << 7)
295 #define AUDIO(sub) (OP6 (AEXT) | (N32_AEXT_ ## sub << 20))