[mirror_ubuntu-bionic-kernel.git] / arch / sh / include / asm / elf.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_ELF_H
#define __ASM_SH_ELF_H

#include <linux/utsname.h>
#include <asm/auxvec.h>
#include <asm/ptrace.h>
#include <asm/user.h>

/* ELF header e_flags defines */
#define EF_SH_PIC		0x100	/* -fpic */
#define EF_SH_FDPIC		0x8000	/* -mfdpic */

/* SH (particularly SHcompact) relocation types  */
#define	R_SH_NONE		0
#define	R_SH_DIR32		1
#define	R_SH_REL32		2
#define	R_SH_DIR8WPN		3
#define	R_SH_IND12W		4
#define	R_SH_DIR8WPL		5
#define	R_SH_DIR8WPZ		6
#define	R_SH_DIR8BP		7
#define	R_SH_DIR8W		8
#define	R_SH_DIR8L		9
#define	R_SH_SWITCH16		25
#define	R_SH_SWITCH32		26
#define	R_SH_USES		27
#define	R_SH_COUNT		28
#define	R_SH_ALIGN		29
#define	R_SH_CODE		30
#define	R_SH_DATA		31
#define	R_SH_LABEL		32
#define	R_SH_SWITCH8		33
#define	R_SH_GNU_VTINHERIT	34
#define	R_SH_GNU_VTENTRY	35
#define	R_SH_TLS_GD_32		144
#define	R_SH_TLS_LD_32		145
#define	R_SH_TLS_LDO_32		146
#define	R_SH_TLS_IE_32		147
#define	R_SH_TLS_LE_32		148
#define	R_SH_TLS_DTPMOD32	149
#define	R_SH_TLS_DTPOFF32	150
#define	R_SH_TLS_TPOFF32	151
#define	R_SH_GOT32		160
#define	R_SH_PLT32		161
#define	R_SH_COPY		162
#define	R_SH_GLOB_DAT		163
#define	R_SH_JMP_SLOT		164
#define	R_SH_RELATIVE		165
#define	R_SH_GOTOFF		166
#define	R_SH_GOTPC		167

/* FDPIC relocs */
#define R_SH_GOT20		201
#define R_SH_GOTOFF20		202
#define R_SH_GOTFUNCDESC	203
#define R_SH_GOTFUNCDESC20	204
#define R_SH_GOTOFFFUNCDESC	205
#define R_SH_GOTOFFFUNCDESC20	206
#define R_SH_FUNCDESC		207
#define R_SH_FUNCDESC_VALUE	208

/* SHmedia relocs */
#define R_SH_IMM_LOW16		246
#define R_SH_IMM_LOW16_PCREL	247
#define R_SH_IMM_MEDLOW16	248
#define R_SH_IMM_MEDLOW16_PCREL	249
/* Keep this the last entry.  */
#define	R_SH_NUM		256

/*
 * ELF register definitions..
 */

typedef unsigned long elf_greg_t;

#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];

typedef struct user_fpu_struct elf_fpregset_t;

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32
#ifdef __LITTLE_ENDIAN__
#define ELF_DATA	ELFDATA2LSB
#else
#define ELF_DATA	ELFDATA2MSB
#endif
#define ELF_ARCH	EM_SH

#ifdef __KERNEL__
/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(x)		((x)->e_machine == EM_SH)
#define elf_check_fdpic(x)		((x)->e_flags & EF_SH_FDPIC)
#define elf_check_const_displacement(x)	((x)->e_flags & EF_SH_PIC)

/*
 * Enable dump using regset.
 * This covers all of general/DSP/FPU regs.
 */
#define CORE_DUMP_USE_REGSET

#define ELF_FDPIC_CORE_EFLAGS	EF_SH_FDPIC
#define ELF_EXEC_PAGESIZE	PAGE_SIZE

/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
   use of this is to invoke "./ld.so someprog" to test out a new version of
   the loader.  We need to make sure that it is out of the way of the program
   that it will "exec", and that there is sufficient room for the brk.  */

#define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)

#define ELF_CORE_COPY_REGS(_dest,_regs)				\
	memcpy((char *) &_dest, (char *) _regs,			\
	       sizeof(struct pt_regs));

/* This yields a mask that user programs can use to figure out what
   instruction set this CPU supports.  This could be done in user space,
   but it's not easy, and we've already done it here.  */

#define ELF_HWCAP	(boot_cpu_data.flags)

/* This yields a string that ld.so will use to load implementation
   specific libraries for optimization.  This is more specific in
   intent than poking at uname or /proc/cpuinfo.

   For the moment, we have only optimizations for the Intel generations,
   but that could change... */

#define ELF_PLATFORM	(utsname()->machine)

#ifdef __SH5__
#define ELF_PLAT_INIT(_r, load_addr) \
  do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
       _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
       _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
       _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \
       _r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \
       _r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \
       _r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \
       _r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \
       _r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \
       _r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \
       _r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \
       _r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \
       _r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \
       _r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \
       _r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \
       _r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \
       _r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \
       _r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \
       _r->sr = SR_FD | SR_MMU; } while (0)
#else
#define ELF_PLAT_INIT(_r, load_addr) \
  do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
       _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
       _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
       _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \
       _r->sr = SR_FD; } while (0)

#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr,	\
			    _dynamic_addr)				\
do {									\
	_r->regs[0]	= 0;						\
	_r->regs[1]	= 0;						\
	_r->regs[2]	= 0;						\
	_r->regs[3]	= 0;						\
	_r->regs[4]	= 0;						\
	_r->regs[5]	= 0;						\
	_r->regs[6]	= 0;						\
	_r->regs[7]	= 0;						\
	_r->regs[8]	= _exec_map_addr;				\
	_r->regs[9]	= _interp_map_addr;				\
	_r->regs[10]	= _dynamic_addr;				\
	_r->regs[11]	= 0;						\
	_r->regs[12]	= 0;						\
	_r->regs[13]	= 0;						\
	_r->regs[14]	= 0;						\
	_r->sr		= SR_FD;					\
} while (0)
#endif

#define SET_PERSONALITY(ex) \
	set_personality(PER_LINUX_32BIT | (current->personality & (~PER_MASK)))

#ifdef CONFIG_VSYSCALL
/* vDSO has arch_setup_additional_pages */
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
				       int uses_interp);

extern unsigned int vdso_enabled;
extern void __kernel_vsyscall;

#define VDSO_BASE		((unsigned long)current->mm->context.vdso)
#define VDSO_SYM(x)		(VDSO_BASE + (unsigned long)(x))

#define VSYSCALL_AUX_ENT					\
	if (vdso_enabled)					\
		NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE);	\
	else							\
		NEW_AUX_ENT(AT_IGNORE, 0)
#else
#define VSYSCALL_AUX_ENT	NEW_AUX_ENT(AT_IGNORE, 0)
#endif /* CONFIG_VSYSCALL */

#ifdef CONFIG_SH_FPU
#define FPU_AUX_ENT	NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT)
#else
#define FPU_AUX_ENT	NEW_AUX_ENT(AT_IGNORE, 0)
#endif

extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;

/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
#define ARCH_DLINFO						\
do {								\
	/* Optional FPU initialization */			\
	FPU_AUX_ENT;						\
								\
	/* Optional vsyscall entry */				\
	VSYSCALL_AUX_ENT;					\
								\
	/* Cache desc */					\
	NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape);	\
	NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape);	\
	NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape);		\
} while (0)

#endif /* __KERNEL__ */
#endif /* __ASM_SH_ELF_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __ASM_SH_ELF_H
	3	#define __ASM_SH_ELF_H
	4
3bc24a1a	5	#include <linux/utsname.h>
315bb968 PM	6	#include <asm/auxvec.h>
	7	#include <asm/ptrace.h>
	8	#include <asm/user.h>
	9
3bc24a1a PM	10	/* ELF header e_flags defines */
	11	#define EF_SH_PIC 0x100 /* -fpic */
	12	#define EF_SH_FDPIC 0x8000 /* -mfdpic */
	13
b542ad11	14	/* SH (particularly SHcompact) relocation types */
1da177e4 LT	15	#define R_SH_NONE 0
	16	#define R_SH_DIR32 1
	17	#define R_SH_REL32 2
	18	#define R_SH_DIR8WPN 3
	19	#define R_SH_IND12W 4
	20	#define R_SH_DIR8WPL 5
	21	#define R_SH_DIR8WPZ 6
	22	#define R_SH_DIR8BP 7
	23	#define R_SH_DIR8W 8
	24	#define R_SH_DIR8L 9
	25	#define R_SH_SWITCH16 25
	26	#define R_SH_SWITCH32 26
	27	#define R_SH_USES 27
	28	#define R_SH_COUNT 28
	29	#define R_SH_ALIGN 29
	30	#define R_SH_CODE 30
	31	#define R_SH_DATA 31
	32	#define R_SH_LABEL 32
	33	#define R_SH_SWITCH8 33
	34	#define R_SH_GNU_VTINHERIT 34
	35	#define R_SH_GNU_VTENTRY 35
	36	#define R_SH_TLS_GD_32 144
	37	#define R_SH_TLS_LD_32 145
	38	#define R_SH_TLS_LDO_32 146
	39	#define R_SH_TLS_IE_32 147
	40	#define R_SH_TLS_LE_32 148
	41	#define R_SH_TLS_DTPMOD32 149
	42	#define R_SH_TLS_DTPOFF32 150
	43	#define R_SH_TLS_TPOFF32 151
	44	#define R_SH_GOT32 160
	45	#define R_SH_PLT32 161
	46	#define R_SH_COPY 162
	47	#define R_SH_GLOB_DAT 163
	48	#define R_SH_JMP_SLOT 164
	49	#define R_SH_RELATIVE 165
	50	#define R_SH_GOTOFF 166
	51	#define R_SH_GOTPC 167
3bc24a1a PM	52
3bc24a1a PM	53	/* FDPIC relocs */
9a9fcfa0 PM	54	#define R_SH_GOT20 201
	55	#define R_SH_GOTOFF20 202
	56	#define R_SH_GOTFUNCDESC 203
	57	#define R_SH_GOTFUNCDESC20 204
	58	#define R_SH_GOTOFFFUNCDESC 205
	59	#define R_SH_GOTOFFFUNCDESC20 206
	60	#define R_SH_FUNCDESC 207
	61	#define R_SH_FUNCDESC_VALUE 208
3bc24a1a	62
b542ad11 PM	63	/* SHmedia relocs */
	64	#define R_SH_IMM_LOW16 246
	65	#define R_SH_IMM_LOW16_PCREL 247
	66	#define R_SH_IMM_MEDLOW16 248
	67	#define R_SH_IMM_MEDLOW16_PCREL 249
1da177e4 LT	68	/* Keep this the last entry. */
	69	#define R_SH_NUM 256
	70
	71	/*
	72	* ELF register definitions..
	73	*/
	74
1da177e4 LT	75	typedef unsigned long elf_greg_t;
	76
	77	#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
	78	typedef elf_greg_t elf_gregset_t[ELF_NGREG];
	79
	80	typedef struct user_fpu_struct elf_fpregset_t;
	81
1da177e4 LT	82	/*
	83	* These are used to set parameters in the core dumps.
	84	*/
	85	#define ELF_CLASS ELFCLASS32
	86	#ifdef __LITTLE_ENDIAN__
	87	#define ELF_DATA ELFDATA2LSB
	88	#else
	89	#define ELF_DATA ELFDATA2MSB
	90	#endif
	91	#define ELF_ARCH EM_SH
	92
a9f1365e PM	93	#ifdef __KERNEL__
	94	/*
	95	* This is used to ensure we don't load something for the wrong architecture.
	96	*/
3bc24a1a PM	97	#define elf_check_arch(x) ((x)->e_machine == EM_SH)
	98	#define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC)
	99	#define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC)
a9f1365e	100
934135c1	101	/*
e7ab3cd2 PM	102	* Enable dump using regset.
e7ab3cd2 PM	103	* This covers all of general/DSP/FPU regs.
934135c1 PM	104	*/
934135c1 PM	105	#define CORE_DUMP_USE_REGSET
934135c1	106
3bc24a1a	107	#define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC
21440cf0	108	#define ELF_EXEC_PAGESIZE PAGE_SIZE
1da177e4 LT	109
	110	/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
	111	use of this is to invoke "./ld.so someprog" to test out a new version of
	112	the loader. We need to make sure that it is out of the way of the program
	113	that it will "exec", and that there is sufficient room for the brk. */
	114
	115	#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
	116
1da177e4 LT	117	#define ELF_CORE_COPY_REGS(_dest,_regs) \
	118	memcpy((char ) &_dest, (char ) _regs, \
	119	sizeof(struct pt_regs));
	120
	121	/* This yields a mask that user programs can use to figure out what
	122	instruction set this CPU supports. This could be done in user space,
	123	but it's not easy, and we've already done it here. */
	124
315bb968	125	#define ELF_HWCAP (boot_cpu_data.flags)
1da177e4 LT	126
	127	/* This yields a string that ld.so will use to load implementation
	128	specific libraries for optimization. This is more specific in
	129	intent than poking at uname or /proc/cpuinfo.
	130
	131	For the moment, we have only optimizations for the Intel generations,
	132	but that could change... */
	133
a9f1365e	134	#define ELF_PLATFORM (utsname()->machine)
1da177e4	135
b542ad11 PM	136	#ifdef __SH5__
	137	#define ELF_PLAT_INIT(_r, load_addr) \
	138	do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
	139	_r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
	140	_r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
	141	_r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \
	142	_r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \
	143	_r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \
	144	_r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \
	145	_r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \
	146	_r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \
	147	_r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \
	148	_r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \
	149	_r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \
	150	_r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \
	151	_r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \
	152	_r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \
	153	_r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \
	154	_r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \
	155	_r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \
	156	_r->sr = SR_FD \| SR_MMU; } while (0)
	157	#else
1da177e4 LT	158	#define ELF_PLAT_INIT(_r, load_addr) \
	159	do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
	160	_r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
	161	_r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
	162	_r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \
	163	_r->sr = SR_FD; } while (0)
3bc24a1a PM	164
	165	#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \
	166	_dynamic_addr) \
	167	do { \
	168	_r->regs[0] = 0; \
	169	_r->regs[1] = 0; \
	170	_r->regs[2] = 0; \
	171	_r->regs[3] = 0; \
	172	_r->regs[4] = 0; \
	173	_r->regs[5] = 0; \
	174	_r->regs[6] = 0; \
	175	_r->regs[7] = 0; \
	176	_r->regs[8] = _exec_map_addr; \
	177	_r->regs[9] = _interp_map_addr; \
	178	_r->regs[10] = _dynamic_addr; \
	179	_r->regs[11] = 0; \
	180	_r->regs[12] = 0; \
	181	_r->regs[13] = 0; \
	182	_r->regs[14] = 0; \
	183	_r->sr = SR_FD; \
	184	} while (0)
b542ad11	185	#endif
1da177e4	186
16f3e95b JK	187	#define SET_PERSONALITY(ex) \
16f3e95b JK	188	set_personality(PER_LINUX_32BIT \| (current->personality & (~PER_MASK)))
9a19eb2a	189
19f9a34f PM	190	#ifdef CONFIG_VSYSCALL
	191	/* vDSO has arch_setup_additional_pages */
	192	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
	193	struct linux_binprm;
	194	extern int arch_setup_additional_pages(struct linux_binprm *bprm,
fc5243d9	195	int uses_interp);
19f9a34f PM	196
	197	extern unsigned int vdso_enabled;
	198	extern void __kernel_vsyscall;
	199
	200	#define VDSO_BASE ((unsigned long)current->mm->context.vdso)
	201	#define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x))
	202
cd01204b PM	203	#define VSYSCALL_AUX_ENT \
cd01204b PM	204	if (vdso_enabled) \
d5ab7803 AS	205	NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \
d5ab7803 AS	206	else \
4a71997a	207	NEW_AUX_ENT(AT_IGNORE, 0)
cd01204b	208	#else
4a71997a	209	#define VSYSCALL_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0)
cd01204b PM	210	#endif /* CONFIG_VSYSCALL */
cd01204b PM	211
98c4ecde PM	212	#ifdef CONFIG_SH_FPU
	213	#define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT)
	214	#else
d5ab7803	215	#define FPU_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0)
98c4ecde PM	216	#endif
98c4ecde PM	217
cd01204b PM	218	extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
cd01204b PM	219
4f9a58d7	220	/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
19f9a34f PM	221	#define ARCH_DLINFO \
19f9a34f PM	222	do { \
98c4ecde PM	223	/* Optional FPU initialization */ \
	224	FPU_AUX_ENT; \
	225	\
cd01204b	226	/* Optional vsyscall entry */ \
98c4ecde	227	VSYSCALL_AUX_ENT; \
cd01204b PM	228	\
	229	/* Cache desc */ \
	230	NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \
	231	NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \
	232	NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \
19f9a34f	233	} while (0)
19f9a34f	234
a9f1365e	235	#endif /* __KERNEL__ */
1da177e4	236	#endif /* __ASM_SH_ELF_H */