1/*
2 *  S390 version
3 *
4 *  Derived from "include/asm-i386/elf.h"
5 */
6
7#ifndef __ASMS390_ELF_H
8#define __ASMS390_ELF_H
9
10/* s390 relocations defined by the ABIs */
11#define R_390_NONE		0	/* No reloc.  */
12#define R_390_8			1	/* Direct 8 bit.  */
13#define R_390_12		2	/* Direct 12 bit.  */
14#define R_390_16		3	/* Direct 16 bit.  */
15#define R_390_32		4	/* Direct 32 bit.  */
16#define R_390_PC32		5	/* PC relative 32 bit.	*/
17#define R_390_GOT12		6	/* 12 bit GOT offset.  */
18#define R_390_GOT32		7	/* 32 bit GOT offset.  */
19#define R_390_PLT32		8	/* 32 bit PC relative PLT address.  */
20#define R_390_COPY		9	/* Copy symbol at runtime.  */
21#define R_390_GLOB_DAT		10	/* Create GOT entry.  */
22#define R_390_JMP_SLOT		11	/* Create PLT entry.  */
23#define R_390_RELATIVE		12	/* Adjust by program base.  */
24#define R_390_GOTOFF32		13	/* 32 bit offset to GOT.	 */
25#define R_390_GOTPC		14	/* 32 bit PC rel. offset to GOT.  */
26#define R_390_GOT16		15	/* 16 bit GOT offset.  */
27#define R_390_PC16		16	/* PC relative 16 bit.	*/
28#define R_390_PC16DBL		17	/* PC relative 16 bit shifted by 1.  */
29#define R_390_PLT16DBL		18	/* 16 bit PC rel. PLT shifted by 1.  */
30#define R_390_PC32DBL		19	/* PC relative 32 bit shifted by 1.  */
31#define R_390_PLT32DBL		20	/* 32 bit PC rel. PLT shifted by 1.  */
32#define R_390_GOTPCDBL		21	/* 32 bit PC rel. GOT shifted by 1.  */
33#define R_390_64		22	/* Direct 64 bit.  */
34#define R_390_PC64		23	/* PC relative 64 bit.	*/
35#define R_390_GOT64		24	/* 64 bit GOT offset.  */
36#define R_390_PLT64		25	/* 64 bit PC relative PLT address.  */
37#define R_390_GOTENT		26	/* 32 bit PC rel. to GOT entry >> 1. */
38#define R_390_GOTOFF16		27	/* 16 bit offset to GOT. */
39#define R_390_GOTOFF64		28	/* 64 bit offset to GOT. */
40#define R_390_GOTPLT12		29	/* 12 bit offset to jump slot.	*/
41#define R_390_GOTPLT16		30	/* 16 bit offset to jump slot.	*/
42#define R_390_GOTPLT32		31	/* 32 bit offset to jump slot.	*/
43#define R_390_GOTPLT64		32	/* 64 bit offset to jump slot.	*/
44#define R_390_GOTPLTENT		33	/* 32 bit rel. offset to jump slot.  */
45#define R_390_PLTOFF16		34	/* 16 bit offset from GOT to PLT. */
46#define R_390_PLTOFF32		35	/* 32 bit offset from GOT to PLT. */
47#define R_390_PLTOFF64		36	/* 16 bit offset from GOT to PLT. */
48#define R_390_TLS_LOAD		37	/* Tag for load insn in TLS code. */
49#define R_390_TLS_GDCALL	38	/* Tag for function call in general
50                                           dynamic TLS code.  */
51#define R_390_TLS_LDCALL	39	/* Tag for function call in local
52                                           dynamic TLS code.  */
53#define R_390_TLS_GD32		40	/* Direct 32 bit for general dynamic
54                                           thread local data.  */
55#define R_390_TLS_GD64		41	/* Direct 64 bit for general dynamic
56                                           thread local data.  */
57#define R_390_TLS_GOTIE12	42	/* 12 bit GOT offset for static TLS
58                                           block offset.  */
59#define R_390_TLS_GOTIE32	43	/* 32 bit GOT offset for static TLS
60                                           block offset.  */
61#define R_390_TLS_GOTIE64	44	/* 64 bit GOT offset for static TLS
62                                           block offset.  */
63#define R_390_TLS_LDM32		45	/* Direct 32 bit for local dynamic
64                                           thread local data in LD code.  */
65#define R_390_TLS_LDM64		46	/* Direct 64 bit for local dynamic
66                                           thread local data in LD code.  */
67#define R_390_TLS_IE32		47	/* 32 bit address of GOT entry for
68                                           negated static TLS block offset.  */
69#define R_390_TLS_IE64		48	/* 64 bit address of GOT entry for
70                                           negated static TLS block offset.  */
71#define R_390_TLS_IEENT		49	/* 32 bit rel. offset to GOT entry for
72                                           negated static TLS block offset.  */
73#define R_390_TLS_LE32		50	/* 32 bit negated offset relative to
74                                           static TLS block.  */
75#define R_390_TLS_LE64		51	/* 64 bit negated offset relative to
76                                           static TLS block.  */
77#define R_390_TLS_LDO32		52	/* 32 bit offset relative to TLS
78                                           block.  */
79#define R_390_TLS_LDO64		53	/* 64 bit offset relative to TLS
80                                           block.  */
81#define R_390_TLS_DTPMOD	54	/* ID of module containing symbol.  */
82#define R_390_TLS_DTPOFF	55	/* Offset in TLS block.  */
83#define R_390_TLS_TPOFF		56	/* Negate offset in static TLS
84                                           block.  */
85#define R_390_20		57	/* Direct 20 bit.  */
86#define R_390_GOT20		58	/* 20 bit GOT offset.  */
87#define R_390_GOTPLT20		59	/* 20 bit offset to jump slot.  */
88#define R_390_TLS_GOTIE20	60	/* 20 bit GOT offset for static TLS
89					   block offset.  */
90/* Keep this the last entry.  */
91#define R_390_NUM	61
92
93/* Bits present in AT_HWCAP. */
94#define HWCAP_S390_ESAN3	1
95#define HWCAP_S390_ZARCH	2
96#define HWCAP_S390_STFLE	4
97#define HWCAP_S390_MSA		8
98#define HWCAP_S390_LDISP	16
99#define HWCAP_S390_EIMM		32
100#define HWCAP_S390_DFP		64
101#define HWCAP_S390_HPAGE	128
102#define HWCAP_S390_ETF3EH	256
103#define HWCAP_S390_HIGH_GPRS	512
104#define HWCAP_S390_TE		1024
105#define HWCAP_S390_VXRS		2048
106
107/*
108 * These are used to set parameters in the core dumps.
109 */
110#define ELF_CLASS	ELFCLASS64
111#define ELF_DATA	ELFDATA2MSB
112#define ELF_ARCH	EM_S390
113
114/*
115 * ELF register definitions..
116 */
117
118#include <asm/ptrace.h>
119#include <asm/compat.h>
120#include <asm/syscall.h>
121#include <asm/user.h>
122
123typedef s390_fp_regs elf_fpregset_t;
124typedef s390_regs elf_gregset_t;
125
126typedef s390_fp_regs compat_elf_fpregset_t;
127typedef s390_compat_regs compat_elf_gregset_t;
128
129#include <linux/sched.h>	/* for task_struct */
130#include <asm/mmu_context.h>
131
132#include <asm/vdso.h>
133
134extern unsigned int vdso_enabled;
135
136/*
137 * This is used to ensure we don't load something for the wrong architecture.
138 */
139#define elf_check_arch(x) \
140	(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
141         && (x)->e_ident[EI_CLASS] == ELF_CLASS)
142#define compat_elf_check_arch(x) \
143	(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
144	 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
145#define compat_start_thread	start_thread31
146
147/* For SVR4/S390 the function pointer to be registered with `atexit` is
148   passed in R14. */
149#define ELF_PLAT_INIT(_r, load_addr) \
150	do { \
151		_r->gprs[14] = 0; \
152	} while (0)
153
154#define CORE_DUMP_USE_REGSET
155#define ELF_EXEC_PAGESIZE	4096
156
157/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
158   use of this is to invoke "./ld.so someprog" to test out a new version of
159   the loader.  We need to make sure that it is out of the way of the program
160   that it will "exec", and that there is sufficient room for the brk. 64-bit
161   tasks are aligned to 4GB. */
162#define ELF_ET_DYN_BASE (is_32bit_task() ? \
163				(STACK_TOP / 3 * 2) : \
164				(STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
165
166/* This yields a mask that user programs can use to figure out what
167   instruction set this CPU supports. */
168
169extern unsigned long elf_hwcap;
170#define ELF_HWCAP (elf_hwcap)
171
172/* This yields a string that ld.so will use to load implementation
173   specific libraries for optimization.  This is more specific in
174   intent than poking at uname or /proc/cpuinfo.
175
176   For the moment, we have only optimizations for the Intel generations,
177   but that could change... */
178
179#define ELF_PLATFORM_SIZE 8
180extern char elf_platform[];
181#define ELF_PLATFORM (elf_platform)
182
183#ifndef CONFIG_COMPAT
184#define SET_PERSONALITY(ex) \
185do {								\
186	set_personality(PER_LINUX |				\
187		(current->personality & (~PER_MASK)));		\
188	current_thread_info()->sys_call_table = 		\
189		(unsigned long) &sys_call_table;		\
190} while (0)
191#else /* CONFIG_COMPAT */
192#define SET_PERSONALITY(ex)					\
193do {								\
194	if (personality(current->personality) != PER_LINUX32)	\
195		set_personality(PER_LINUX |			\
196			(current->personality & ~PER_MASK));	\
197	if ((ex).e_ident[EI_CLASS] == ELFCLASS32) {		\
198		set_thread_flag(TIF_31BIT);			\
199		current_thread_info()->sys_call_table =		\
200			(unsigned long)	&sys_call_table_emu;	\
201	} else {						\
202		clear_thread_flag(TIF_31BIT);			\
203		current_thread_info()->sys_call_table =		\
204			(unsigned long) &sys_call_table;	\
205	}							\
206} while (0)
207#endif /* CONFIG_COMPAT */
208
209extern unsigned long mmap_rnd_mask;
210
211#define STACK_RND_MASK	(test_thread_flag(TIF_31BIT) ? 0x7ff : mmap_rnd_mask)
212
213#define ARCH_DLINFO							    \
214do {									    \
215	if (vdso_enabled)						    \
216		NEW_AUX_ENT(AT_SYSINFO_EHDR,				    \
217			    (unsigned long)current->mm->context.vdso_base); \
218} while (0)
219
220struct linux_binprm;
221
222#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
223int arch_setup_additional_pages(struct linux_binprm *, int);
224
225void *fill_cpu_elf_notes(void *ptr, struct save_area *sa, __vector128 *vxrs);
226
227#endif
228