1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SPARC64_ELF_H
3 #define __ASM_SPARC64_ELF_H
4 
5 /*
6  * ELF register definitions..
7  */
8 
9 #include <asm/ptrace.h>
10 #include <asm/processor.h>
11 #include <asm/spitfire.h>
12 #include <asm/adi.h>
13 
14 /*
15  * Sparc section types
16  */
17 #define STT_REGISTER		13
18 
19 /*
20  * Sparc ELF relocation types
21  */
22 #define	R_SPARC_NONE		0
23 #define	R_SPARC_8		1
24 #define	R_SPARC_16		2
25 #define	R_SPARC_32		3
26 #define	R_SPARC_DISP8		4
27 #define	R_SPARC_DISP16		5
28 #define	R_SPARC_DISP32		6
29 #define	R_SPARC_WDISP30		7
30 #define	R_SPARC_WDISP22		8
31 #define	R_SPARC_HI22		9
32 #define	R_SPARC_22		10
33 #define	R_SPARC_13		11
34 #define	R_SPARC_LO10		12
35 #define	R_SPARC_GOT10		13
36 #define	R_SPARC_GOT13		14
37 #define	R_SPARC_GOT22		15
38 #define	R_SPARC_PC10		16
39 #define	R_SPARC_PC22		17
40 #define	R_SPARC_WPLT30		18
41 #define	R_SPARC_COPY		19
42 #define	R_SPARC_GLOB_DAT	20
43 #define	R_SPARC_JMP_SLOT	21
44 #define	R_SPARC_RELATIVE	22
45 #define	R_SPARC_UA32		23
46 #define R_SPARC_PLT32		24
47 #define R_SPARC_HIPLT22		25
48 #define R_SPARC_LOPLT10		26
49 #define R_SPARC_PCPLT32		27
50 #define R_SPARC_PCPLT22		28
51 #define R_SPARC_PCPLT10		29
52 #define R_SPARC_10		30
53 #define R_SPARC_11		31
54 #define R_SPARC_64		32
55 #define R_SPARC_OLO10		33
56 #define R_SPARC_WDISP16		40
57 #define R_SPARC_WDISP19		41
58 #define R_SPARC_7		43
59 #define R_SPARC_5		44
60 #define R_SPARC_6		45
61 
62 /* Bits present in AT_HWCAP, primarily for Sparc32.  */
63 #define HWCAP_SPARC_FLUSH       0x00000001
64 #define HWCAP_SPARC_STBAR       0x00000002
65 #define HWCAP_SPARC_SWAP        0x00000004
66 #define HWCAP_SPARC_MULDIV      0x00000008
67 #define HWCAP_SPARC_V9		0x00000010
68 #define HWCAP_SPARC_ULTRA3	0x00000020
69 #define HWCAP_SPARC_BLKINIT	0x00000040
70 #define HWCAP_SPARC_N2		0x00000080
71 
72 /* Solaris compatible AT_HWCAP bits. */
73 #define AV_SPARC_MUL32		0x00000100 /* 32x32 multiply is efficient */
74 #define AV_SPARC_DIV32		0x00000200 /* 32x32 divide is efficient */
75 #define AV_SPARC_FSMULD		0x00000400 /* 'fsmuld' is efficient */
76 #define AV_SPARC_V8PLUS		0x00000800 /* v9 insn available to 32bit */
77 #define AV_SPARC_POPC		0x00001000 /* 'popc' is efficient */
78 #define AV_SPARC_VIS		0x00002000 /* VIS insns available */
79 #define AV_SPARC_VIS2		0x00004000 /* VIS2 insns available */
80 #define AV_SPARC_ASI_BLK_INIT	0x00008000 /* block init ASIs available */
81 #define AV_SPARC_FMAF		0x00010000 /* fused multiply-add */
82 #define AV_SPARC_VIS3		0x00020000 /* VIS3 insns available */
83 #define AV_SPARC_HPC		0x00040000 /* HPC insns available */
84 #define AV_SPARC_RANDOM		0x00080000 /* 'random' insn available */
85 #define AV_SPARC_TRANS		0x00100000 /* transaction insns available */
86 #define AV_SPARC_FJFMAU		0x00200000 /* unfused multiply-add */
87 #define AV_SPARC_IMA		0x00400000 /* integer multiply-add */
88 #define AV_SPARC_ASI_CACHE_SPARING \
89 				0x00800000 /* cache sparing ASIs available */
90 #define AV_SPARC_PAUSE		0x01000000 /* PAUSE available */
91 #define AV_SPARC_CBCOND		0x02000000 /* CBCOND insns available */
92 
93 /* Solaris decided to enumerate every single crypto instruction type
94  * in the AT_HWCAP bits.  This is wasteful, since if crypto is present,
95  * you still need to look in the CFR register to see if the opcode is
96  * really available.  So we simply advertise only "crypto" support.
97  */
98 #define HWCAP_SPARC_CRYPTO	0x04000000 /* CRYPTO insns available */
99 #define HWCAP_SPARC_ADI		0x08000000 /* ADI available */
100 
101 #define CORE_DUMP_USE_REGSET
102 
103 /*
104  * These are used to set parameters in the core dumps.
105  */
106 #define ELF_ARCH		EM_SPARCV9
107 #define ELF_CLASS		ELFCLASS64
108 #define ELF_DATA		ELFDATA2MSB
109 
110 /* Format of 64-bit elf_gregset_t is:
111  * 	G0 --> G7
112  * 	O0 --> O7
113  * 	L0 --> L7
114  * 	I0 --> I7
115  *	TSTATE
116  *	TPC
117  *	TNPC
118  *	Y
119  */
120 typedef unsigned long elf_greg_t;
121 #define ELF_NGREG 36
122 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
123 
124 typedef struct {
125 	unsigned long	pr_regs[32];
126 	unsigned long	pr_fsr;
127 	unsigned long	pr_gsr;
128 	unsigned long	pr_fprs;
129 } elf_fpregset_t;
130 
131 /* Format of 32-bit elf_gregset_t is:
132  * 	G0 --> G7
133  *	O0 --> O7
134  *	L0 --> L7
135  *	I0 --> I7
136  *	PSR, PC, nPC, Y, WIM, TBR
137  */
138 typedef unsigned int compat_elf_greg_t;
139 #define COMPAT_ELF_NGREG 38
140 typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
141 
142 typedef struct {
143 	union {
144 		unsigned int	pr_regs[32];
145 		unsigned long	pr_dregs[16];
146 	} pr_fr;
147 	unsigned int __unused;
148 	unsigned int	pr_fsr;
149 	unsigned char	pr_qcnt;
150 	unsigned char	pr_q_entrysize;
151 	unsigned char	pr_en;
152 	unsigned int	pr_q[64];
153 } compat_elf_fpregset_t;
154 
155 /* UltraSparc extensions.  Still unused, but will be eventually.  */
156 typedef struct {
157 	unsigned int pr_type;
158 	unsigned int pr_align;
159 	union {
160 		struct {
161 			union {
162 				unsigned int	pr_regs[32];
163 				unsigned long	pr_dregs[16];
164 				long double	pr_qregs[8];
165 			} pr_xfr;
166 		} pr_v8p;
167 		unsigned int	pr_xfsr;
168 		unsigned int	pr_fprs;
169 		unsigned int	pr_xg[8];
170 		unsigned int	pr_xo[8];
171 		unsigned long	pr_tstate;
172 		unsigned int	pr_filler[8];
173 	} pr_un;
174 } elf_xregset_t;
175 
176 /*
177  * This is used to ensure we don't load something for the wrong architecture.
178  */
179 #define elf_check_arch(x)		((x)->e_machine == ELF_ARCH)
180 #define compat_elf_check_arch(x)	((x)->e_machine == EM_SPARC || \
181 					 (x)->e_machine == EM_SPARC32PLUS)
182 #define compat_start_thread		start_thread32
183 
184 #define ELF_EXEC_PAGESIZE	PAGE_SIZE
185 
186 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
187    use of this is to invoke "./ld.so someprog" to test out a new version of
188    the loader.  We need to make sure that it is out of the way of the program
189    that it will "exec", and that there is sufficient room for the brk.  */
190 
191 #define ELF_ET_DYN_BASE		0x0000010000000000UL
192 #define COMPAT_ELF_ET_DYN_BASE	0x0000000070000000UL
193 
194 extern unsigned long sparc64_elf_hwcap;
195 #define ELF_HWCAP	sparc64_elf_hwcap
196 
197 /* This yields a string that ld.so will use to load implementation
198    specific libraries for optimization.  This is more specific in
199    intent than poking at uname or /proc/cpuinfo.  */
200 
201 #define ELF_PLATFORM	(NULL)
202 
203 #define SET_PERSONALITY(ex)				\
204 do {	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)	\
205 		set_thread_flag(TIF_32BIT);		\
206 	else						\
207 		clear_thread_flag(TIF_32BIT);		\
208 	/* flush_thread will update pgd cache */	\
209 	if (personality(current->personality) != PER_LINUX32)	\
210 		set_personality(PER_LINUX |		\
211 			(current->personality & (~PER_MASK)));	\
212 } while (0)
213 
214 extern unsigned int vdso_enabled;
215 
216 #define	ARCH_DLINFO							\
217 do {									\
218 	extern struct adi_config adi_state;				\
219 	if (vdso_enabled)						\
220 		NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
221 			    (unsigned long)current->mm->context.vdso);	\
222 	NEW_AUX_ENT(AT_ADI_BLKSZ, adi_state.caps.blksz);		\
223 	NEW_AUX_ENT(AT_ADI_NBITS, adi_state.caps.nbits);		\
224 	NEW_AUX_ENT(AT_ADI_UEONADI, adi_state.caps.ue_on_adi);		\
225 } while (0)
226 
227 struct linux_binprm;
228 
229 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES	1
230 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
231 					int uses_interp);
232 #endif /* !(__ASM_SPARC64_ELF_H) */
233