xref: /titanic_51/usr/src/cmd/sgs/include/sparc/machdep_sparc.h (revision 24fe0b3bf671e123467ce1df0b67cadd3614c8e4)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  *	Copyright (c) 1988 AT&T
24  *	  All Rights Reserved
25  *
26  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
27  * Use is subject to license terms.
28  *
29  * Global include file for all sgs SPARC machine dependent macros, constants
30  * and declarations.
31  */
32 
33 #ifndef	_MACHDEP_SPARC_H
34 #define	_MACHDEP_SPARC_H
35 
36 #include <link.h>
37 #include <sys/machelf.h>
38 
39 #ifdef	__cplusplus
40 extern "C" {
41 #endif
42 
43 /*
44  * Elf header information.
45  */
46 #define	M_MACH_32		EM_SPARC
47 #define	M_MACH_64		EM_SPARCV9
48 
49 #ifdef _ELF64
50 #define	M_MACH			EM_SPARCV9
51 #define	M_CLASS			ELFCLASS64
52 #else
53 #define	M_MACH			EM_SPARC
54 #define	M_CLASS			ELFCLASS32
55 #endif
56 #define	M_MACHPLUS		EM_SPARC32PLUS
57 #define	M_DATA			ELFDATA2MSB
58 #define	M_FLAGSPLUS		EF_SPARC_32PLUS
59 
60 /*
61  * Page boundary Macros: truncate to previous page boundary and round to
62  * next page boundary (refer to generic macros in ../sgs.h also).
63  */
64 #define	M_PTRUNC(X)	((X) & ~(syspagsz - 1))
65 #define	M_PROUND(X)	(((X) + syspagsz - 1) & ~(syspagsz - 1))
66 
67 /*
68  * Segment boundary macros: truncate to previous segment boundary and round
69  * to next page boundary.
70  */
71 #ifndef	M_SEGSIZE
72 #define	M_SEGSIZE	ELF_SPARC_MAXPGSZ
73 #endif
74 #define	M_STRUNC(X)	((X) & ~(M_SEGSIZE - 1))
75 #define	M_SROUND(X)	(((X) + M_SEGSIZE - 1) & ~(M_SEGSIZE - 1))
76 
77 /*
78  * Relocation type macro.
79  */
80 #define	M_RELOC		Rela
81 
82 /*
83  * TLS static segments must be rounded to the following requirements,
84  * due to libthread stack allocation.
85  */
86 #if	defined(_ELF64)
87 #define	M_TLSSTATALIGN	0x10
88 #else
89 #define	M_TLSSTATALIGN	0x08
90 #endif
91 
92 /*
93  * Instruction encodings.
94  */
95 #define	M_SAVESP64	0x9de3bfc0	/* save %sp, -64, %sp */
96 #define	M_CALL		0x40000000
97 #define	M_JMPL		0x81c06000	/* jmpl %g1 + simm13, %g0 */
98 #define	M_SETHIG0	0x01000000	/* sethi %hi(val), %g0 */
99 #define	M_SETHIG1	0x03000000	/* sethi %hi(val), %g1 */
100 #define	M_STO7G1IM	0xde206000	/* st	 %o7,[%g1 + %lo(val)] */
101 #define	M_SUBFPSPG1	0x8227800e	/* sub	%fp,%sp,%g1 */
102 #define	M_NOP		0x01000000	/* sethi 0, %o0 (nop) */
103 #define	M_BA_A		0x30800000	/* ba,a */
104 #define	M_BA_A_PT	0x30480000	/* ba,a %icc, <dst> */
105 #define	M_MOVO7TOG1	0x8210000f	/* mov %o7, %g1 */
106 #define	M_MOVO7TOG5	0x8a10000f	/* mov %o7, %g5 */
107 #define	M_MOVI7TOG1	0x8210001f	/* mov %i7, %g1 */
108 #define	M_BA_A_XCC	0x30680000	/* ba,a %xcc */
109 #define	M_JMPL_G5G0	0x81c16000	/* jmpl %g5 + 0, %g0 */
110 #define	M_XNOR_G5G1	0x82396000	/* xnor	%g5, 0, %g1 */
111 
112 
113 #define	M_BIND_ADJ	4		/* adjustment for end of */
114 					/*	elf_rtbndr() address */
115 
116 /* transition flags for got sizing */
117 #define	M_GOT_LARGE	(Sword)(-M_GOT_MAXSMALL - 1)
118 #define	M_GOT_SMALL	(Sword)(-M_GOT_MAXSMALL - 2)
119 #define	M_GOT_MIXED	(Sword)(-M_GOT_MAXSMALL - 3)
120 
121 /*
122  * Other machine dependent entities
123  */
124 #ifdef _ELF64
125 #define	M_SEGM_ALIGN	ELF_SPARCV9_MAXPGSZ
126 /*
127  * Put default 64-bit programs above 4 gigabytes to help insure correctness, so
128  * that any 64-bit programs that truncate pointers will fault now instead of
129  * corrupting itself and dying mysteriously.  64-bit programs can also be
130  * restricted to a 32-bit address space (SF1_SUNW_ADDR32), and these programs
131  * provide an alternative origin.
132  */
133 #define	M_SEGM_ORIGIN	(Addr)0x100000000ULL	/* default 1st segment origin */
134 #define	M_SEGM_AORIGIN	(Addr)0x100000ULL	/* alternative 1st segment */
135 						/*    origin */
136 #else
137 #define	M_SEGM_ALIGN	ELF_SPARC_MAXPGSZ
138 #define	M_SEGM_ORIGIN	(Addr)0x10000		/* default 1st segment origin */
139 #define	M_SEGM_AORIGIN	M_SEGM_ORIGIN		/* alternative 1st segment */
140 						/*    origin */
141 #endif
142 
143 /*
144  * Make common relocation information transparent to the common code
145  */
146 #define	M_REL_DT_TYPE	DT_RELA		/* .dynamic entry */
147 #define	M_REL_DT_SIZE	DT_RELASZ	/* .dynamic entry */
148 #define	M_REL_DT_ENT	DT_RELAENT	/* .dynamic entry */
149 #define	M_REL_DT_COUNT	DT_RELACOUNT	/* .dynamic entry */
150 #define	M_REL_SHT_TYPE	SHT_RELA	/* section header type */
151 #define	M_REL_ELF_TYPE	ELF_T_RELA	/* data buffer type */
152 
153 /*
154  * Make common relocation types transparent to the common code
155  */
156 #define	M_R_NONE	R_SPARC_NONE
157 #define	M_R_GLOB_DAT	R_SPARC_GLOB_DAT
158 #define	M_R_COPY	R_SPARC_COPY
159 #define	M_R_RELATIVE	R_SPARC_RELATIVE
160 #define	M_R_JMP_SLOT	R_SPARC_JMP_SLOT
161 #define	M_R_REGISTER	R_SPARC_REGISTER
162 #define	M_R_FPTR	R_SPARC_NONE
163 #define	M_R_NUM		R_SPARC_NUM
164 
165 #ifdef	_ELF64
166 #define	M_R_ARRAYADDR	R_SPARC_64
167 #define	M_R_DTPMOD	R_SPARC_TLS_DTPMOD64
168 #define	M_R_DTPOFF	R_SPARC_TLS_DTPOFF64
169 #define	M_R_TPOFF	R_SPARC_TLS_TPOFF64
170 #else	/* _ELF32 */
171 #define	M_R_ARRAYADDR	R_SPARC_32
172 #define	M_R_DTPMOD	R_SPARC_TLS_DTPMOD32
173 #define	M_R_DTPOFF	R_SPARC_TLS_DTPOFF32
174 #define	M_R_TPOFF	R_SPARC_TLS_TPOFF32
175 #endif	/* _ELF64 */
176 
177 
178 /*
179  * Make register symbols transparent to common code
180  */
181 #define	M_DT_REGISTER	DT_SPARC_REGISTER
182 
183 /*
184  * Make plt section information transparent to the common code.
185  */
186 #define	M_PLT_SHF_FLAGS	(SHF_ALLOC | SHF_WRITE | SHF_EXECINSTR)
187 
188 /*
189  * Make data segment information transparent to the common code.
190  */
191 #define	M_DATASEG_PERM	(PF_R | PF_W | PF_X)
192 
193 /*
194  * Define a set of identifies for special sections.  These allow the sections
195  * to be ordered within the output file image.  These values should be
196  * maintained consistently, where appropriate, in each platform specific header
197  * file.
198  *
199  *  o	null identifies that this section does not need to be added to the
200  *	output image (ie. shared object sections or sections we're going to
201  *	recreate (sym tables, string tables, relocations, etc.)).
202  *
203  *  o	any user defined section will be first in the associated segment.
204  *
205  *  o	interp and capabilities sections are next, as these are accessed
206  *	immediately the first page of the image is mapped.
207  *
208  *  o	the syminfo, hash, dynsym, dynstr and rel's are grouped together as
209  *	these will all be accessed first by ld.so.1 to perform relocations.
210  *
211  *  o	the got, dynamic, and plt are grouped together as these may also be
212  *	accessed first by ld.so.1 to perform relocations, fill in DT_DEBUG
213  *	(executables only), and .plt[0].
214  *
215  *  o	unknown sections (stabs, comments etc.) go at the end.
216  *
217  * Note that .tlsbss/.bss are given the largest identifiers.  This insures that
218  * if any unknown sections become associated to the same segment as the .bss,
219  * the .bss sections are always the last section in the segment.
220  */
221 #define	M_ID_NULL	0x00
222 #define	M_ID_USER	0x01
223 
224 #define	M_ID_INTERP	0x02			/* SHF_ALLOC */
225 #define	M_ID_CAP	0x03
226 #define	M_ID_UNWINDHDR	0x06
227 #define	M_ID_UNWIND	0x07
228 
229 #define	M_ID_SYMINFO	0x08
230 #define	M_ID_HASH	0x09
231 #define	M_ID_LDYNSYM	0x0a			/* always right before DYNSYM */
232 #define	M_ID_DYNSYM	0x0b
233 #define	M_ID_DYNSTR	0x0c
234 #define	M_ID_VERSION	0x0d
235 #define	M_ID_DYNSORT	0x0e
236 #define	M_ID_REL	0x0f
237 #define	M_ID_TEXT	0x10			/* SHF_ALLOC + SHF_EXECINSTR */
238 #define	M_ID_DATA	0x20
239 
240 /*	M_ID_USER	0x01			dual entry - listed above */
241 #define	M_ID_GOTDATA	0x02			/* SHF_ALLOC + SHF_WRITE */
242 #define	M_ID_GOT	0x03
243 #define	M_ID_PLT	0x04
244 #define	M_ID_DYNAMIC	0x05
245 #define	M_ID_ARRAY	0x06
246 /*	M_ID_UNWIND	0x07			dual entry - listed above */
247 
248 #define	M_ID_UNKNOWN	0xfc			/* just before TLS */
249 
250 #define	M_ID_TLS	0xfd			/* just before bss */
251 #define	M_ID_TLSBSS	0xfe
252 #define	M_ID_BSS	0xff
253 
254 #define	M_ID_SYMTAB_NDX	0x02			/* ! SHF_ALLOC */
255 #define	M_ID_SYMTAB	0x03
256 #define	M_ID_STRTAB	0x04
257 #define	M_ID_DYNSYM_NDX	0x05
258 #define	M_ID_NOTE	0x06
259 
260 
261 #ifdef	__cplusplus
262 }
263 #endif
264 
265 #endif /* _MACHDEP_SPARC_H */
266