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

/*
 * ELF definitions for the Hexagon architecture
 *
 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef __ASM_ELF_H
#define __ASM_ELF_H

#include <asm/ptrace.h>
#include <asm/user.h>

/*
 * This should really be in linux/elf-em.h.
 */
#define EM_HEXAGON	164   /* QUALCOMM Hexagon */

struct elf32_hdr;

/*
 * ELF header e_flags defines.
 */

/*  should have stuff like "CPU type" and maybe "ABI version", etc  */

/* Hexagon relocations */
  /* V2 */
#define R_HEXAGON_NONE           0
#define R_HEXAGON_B22_PCREL      1
#define R_HEXAGON_B15_PCREL      2
#define R_HEXAGON_B7_PCREL       3
#define R_HEXAGON_LO16           4
#define R_HEXAGON_HI16           5
#define R_HEXAGON_32             6
#define R_HEXAGON_16             7
#define R_HEXAGON_8              8
#define R_HEXAGON_GPREL16_0      9
#define R_HEXAGON_GPREL16_1     10
#define R_HEXAGON_GPREL16_2     11
#define R_HEXAGON_GPREL16_3     12
#define R_HEXAGON_HL16          13
  /* V3 */
#define R_HEXAGON_B13_PCREL     14
  /* V4 */
#define R_HEXAGON_B9_PCREL      15
  /* V4 (extenders) */
#define R_HEXAGON_B32_PCREL_X   16
#define R_HEXAGON_32_6_X        17
  /* V4 (extended) */
#define R_HEXAGON_B22_PCREL_X   18
#define R_HEXAGON_B15_PCREL_X   19
#define R_HEXAGON_B13_PCREL_X   20
#define R_HEXAGON_B9_PCREL_X    21
#define R_HEXAGON_B7_PCREL_X    22
#define R_HEXAGON_16_X          23
#define R_HEXAGON_12_X          24
#define R_HEXAGON_11_X          25
#define R_HEXAGON_10_X          26
#define R_HEXAGON_9_X           27
#define R_HEXAGON_8_X           28
#define R_HEXAGON_7_X           29
#define R_HEXAGON_6_X           30
  /* V2 PIC */
#define R_HEXAGON_32_PCREL      31
#define R_HEXAGON_COPY          32
#define R_HEXAGON_GLOB_DAT      33
#define R_HEXAGON_JMP_SLOT      34
#define R_HEXAGON_RELATIVE      35
#define R_HEXAGON_PLT_B22_PCREL 36
#define R_HEXAGON_GOTOFF_LO16   37
#define R_HEXAGON_GOTOFF_HI16   38
#define R_HEXAGON_GOTOFF_32     39
#define R_HEXAGON_GOT_LO16      40
#define R_HEXAGON_GOT_HI16      41
#define R_HEXAGON_GOT_32        42
#define R_HEXAGON_GOT_16        43

/*
 * ELF register definitions..
 */
typedef unsigned long elf_greg_t;

typedef struct user_regs_struct elf_gregset_t;
#define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long))

/*  Placeholder  */
typedef unsigned long elf_fpregset_t;

/*
 * Bypass the whole "regsets" thing for now and use the define.
 */

#if CONFIG_HEXAGON_ARCH_VERSION >= 4
#define CS_COPYREGS(DEST,REGS) \
do {\
	DEST.cs0 = REGS->cs0;\
	DEST.cs1 = REGS->cs1;\
} while (0)
#else
#define CS_COPYREGS(DEST,REGS)
#endif

#define ELF_CORE_COPY_REGS(DEST, REGS)	\
do {					\
	DEST.r0 = REGS->r00;		\
	DEST.r1 = REGS->r01;		\
	DEST.r2 = REGS->r02;		\
	DEST.r3 = REGS->r03;		\
	DEST.r4 = REGS->r04;		\
	DEST.r5 = REGS->r05;		\
	DEST.r6 = REGS->r06;		\
	DEST.r7 = REGS->r07;		\
	DEST.r8 = REGS->r08;		\
	DEST.r9 = REGS->r09;		\
	DEST.r10 = REGS->r10;		\
	DEST.r11 = REGS->r11;		\
	DEST.r12 = REGS->r12;		\
	DEST.r13 = REGS->r13;		\
	DEST.r14 = REGS->r14;		\
	DEST.r15 = REGS->r15;		\
	DEST.r16 = REGS->r16;		\
	DEST.r17 = REGS->r17;		\
	DEST.r18 = REGS->r18;		\
	DEST.r19 = REGS->r19;		\
	DEST.r20 = REGS->r20;		\
	DEST.r21 = REGS->r21;		\
	DEST.r22 = REGS->r22;		\
	DEST.r23 = REGS->r23;		\
	DEST.r24 = REGS->r24;		\
	DEST.r25 = REGS->r25;		\
	DEST.r26 = REGS->r26;		\
	DEST.r27 = REGS->r27;		\
	DEST.r28 = REGS->r28;		\
	DEST.r29 = pt_psp(REGS);	\
	DEST.r30 = REGS->r30;		\
	DEST.r31 = REGS->r31;		\
	DEST.sa0 = REGS->sa0;		\
	DEST.lc0 = REGS->lc0;		\
	DEST.sa1 = REGS->sa1;		\
	DEST.lc1 = REGS->lc1;		\
	DEST.m0 = REGS->m0;		\
	DEST.m1 = REGS->m1;		\
	DEST.usr = REGS->usr;		\
	DEST.p3_0 = REGS->preds;	\
	DEST.gp = REGS->gp;		\
	DEST.ugp = REGS->ugp;		\
	CS_COPYREGS(DEST,REGS);		\
	DEST.pc = pt_elr(REGS);		\
	DEST.cause = pt_cause(REGS);	\
	DEST.badva = pt_badva(REGS);	\
} while (0);

/*
 * This is used to ensure we don't load something for the wrong architecture.
 * Checks the machine and ABI type.
 */
#define elf_check_arch(hdr)	((hdr)->e_machine == EM_HEXAGON)

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32
#define ELF_DATA	ELFDATA2LSB
#define ELF_ARCH	EM_HEXAGON

#if CONFIG_HEXAGON_ARCH_VERSION == 2
#define ELF_CORE_EFLAGS 0x1
#endif

#if CONFIG_HEXAGON_ARCH_VERSION == 3
#define ELF_CORE_EFLAGS 0x2
#endif

#if CONFIG_HEXAGON_ARCH_VERSION == 4
#define ELF_CORE_EFLAGS 0x3
#endif

/*
 * Some architectures have ld.so set up a pointer to a function
 * to be registered using atexit, to facilitate cleanup.  So that
 * static executables will be well-behaved, we would null the register
 * in question here, in the pt_regs structure passed.  For now,
 * leave it a null macro.
 */
#define ELF_PLAT_INIT(regs, load_addr) do { } while (0)

#define USE_ELF_CORE_DUMP
#define CORE_DUMP_USE_REGSET

/* Hrm is this going to cause problems for changing PAGE_SIZE?  */
#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         0x08000000UL

/*
 * This yields a mask that user programs can use to figure out what
 * instruction set this cpu supports.
 */
#define ELF_HWCAP	(0)

/*
 * 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.
 */
#define ELF_PLATFORM  (NULL)

#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
				       int uses_interp);


#endif
Commit	Line	Data
8feca0e1 RK	1	/*
	2	* ELF definitions for the Hexagon architecture
	3	*
a9a44fdf	4	* Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
8feca0e1 RK	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 and
	8	* only version 2 as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	18	* 02110-1301, USA.
	19	*/
	20
	21	#ifndef __ASM_ELF_H
	22	#define __ASM_ELF_H
	23
	24	#include <asm/ptrace.h>
	25	#include <asm/user.h>
	26
	27	/*
	28	* This should really be in linux/elf-em.h.
	29	*/
	30	#define EM_HEXAGON 164 /* QUALCOMM Hexagon */
	31
	32	struct elf32_hdr;
	33
	34	/*
	35	* ELF header e_flags defines.
	36	*/
	37
	38	/* should have stuff like "CPU type" and maybe "ABI version", etc */
	39
	40	/* Hexagon relocations */
	41	/* V2 */
	42	#define R_HEXAGON_NONE 0
	43	#define R_HEXAGON_B22_PCREL 1
	44	#define R_HEXAGON_B15_PCREL 2
	45	#define R_HEXAGON_B7_PCREL 3
	46	#define R_HEXAGON_LO16 4
	47	#define R_HEXAGON_HI16 5
	48	#define R_HEXAGON_32 6
	49	#define R_HEXAGON_16 7
	50	#define R_HEXAGON_8 8
	51	#define R_HEXAGON_GPREL16_0 9
	52	#define R_HEXAGON_GPREL16_1 10
	53	#define R_HEXAGON_GPREL16_2 11
	54	#define R_HEXAGON_GPREL16_3 12
	55	#define R_HEXAGON_HL16 13
	56	/* V3 */
	57	#define R_HEXAGON_B13_PCREL 14
	58	/* V4 */
	59	#define R_HEXAGON_B9_PCREL 15
	60	/* V4 (extenders) */
	61	#define R_HEXAGON_B32_PCREL_X 16
	62	#define R_HEXAGON_32_6_X 17
	63	/* V4 (extended) */
	64	#define R_HEXAGON_B22_PCREL_X 18
	65	#define R_HEXAGON_B15_PCREL_X 19
	66	#define R_HEXAGON_B13_PCREL_X 20
	67	#define R_HEXAGON_B9_PCREL_X 21
	68	#define R_HEXAGON_B7_PCREL_X 22
69	#define R_HEXAGON_16_X 23
70	#define R_HEXAGON_12_X 24
71	#define R_HEXAGON_11_X 25
72	#define R_HEXAGON_10_X 26
73	#define R_HEXAGON_9_X 27
74	#define R_HEXAGON_8_X 28
75	#define R_HEXAGON_7_X 29
76	#define R_HEXAGON_6_X 30
77	/* V2 PIC */
78	#define R_HEXAGON_32_PCREL 31
79	#define R_HEXAGON_COPY 32
80	#define R_HEXAGON_GLOB_DAT 33
81	#define R_HEXAGON_JMP_SLOT 34
82	#define R_HEXAGON_RELATIVE 35
83	#define R_HEXAGON_PLT_B22_PCREL 36
84	#define R_HEXAGON_GOTOFF_LO16 37
85	#define R_HEXAGON_GOTOFF_HI16 38
86	#define R_HEXAGON_GOTOFF_32 39
87	#define R_HEXAGON_GOT_LO16 40
88	#define R_HEXAGON_GOT_HI16 41
89	#define R_HEXAGON_GOT_32 42
90	#define R_HEXAGON_GOT_16 43
91
92	/*
93	* ELF register definitions..
94	*/
95	typedef unsigned long elf_greg_t;
96
97	typedef struct user_regs_struct elf_gregset_t;
98	#define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long))
99
100	/* Placeholder */
101	typedef unsigned long elf_fpregset_t;
102
103	/*
104	* Bypass the whole "regsets" thing for now and use the define.
105	*/
106
426d29cc RK	107	#if CONFIG_HEXAGON_ARCH_VERSION >= 4
	108	#define CS_COPYREGS(DEST,REGS) \
	109	do {\
	110	DEST.cs0 = REGS->cs0;\
	111	DEST.cs1 = REGS->cs1;\
	112	} while (0)
	113	#else
	114	#define CS_COPYREGS(DEST,REGS)
	115	#endif
	116
8feca0e1 RK	117	#define ELF_CORE_COPY_REGS(DEST, REGS) \
	118	do { \
	119	DEST.r0 = REGS->r00; \
	120	DEST.r1 = REGS->r01; \
	121	DEST.r2 = REGS->r02; \
	122	DEST.r3 = REGS->r03; \
	123	DEST.r4 = REGS->r04; \
	124	DEST.r5 = REGS->r05; \
	125	DEST.r6 = REGS->r06; \
	126	DEST.r7 = REGS->r07; \
	127	DEST.r8 = REGS->r08; \
	128	DEST.r9 = REGS->r09; \
	129	DEST.r10 = REGS->r10; \
	130	DEST.r11 = REGS->r11; \
	131	DEST.r12 = REGS->r12; \
	132	DEST.r13 = REGS->r13; \
	133	DEST.r14 = REGS->r14; \
	134	DEST.r15 = REGS->r15; \
	135	DEST.r16 = REGS->r16; \
	136	DEST.r17 = REGS->r17; \
	137	DEST.r18 = REGS->r18; \
	138	DEST.r19 = REGS->r19; \
	139	DEST.r20 = REGS->r20; \
	140	DEST.r21 = REGS->r21; \
	141	DEST.r22 = REGS->r22; \
	142	DEST.r23 = REGS->r23; \
	143	DEST.r24 = REGS->r24; \
	144	DEST.r25 = REGS->r25; \
	145	DEST.r26 = REGS->r26; \
	146	DEST.r27 = REGS->r27; \
	147	DEST.r28 = REGS->r28; \
	148	DEST.r29 = pt_psp(REGS); \
	149	DEST.r30 = REGS->r30; \
	150	DEST.r31 = REGS->r31; \
	151	DEST.sa0 = REGS->sa0; \
	152	DEST.lc0 = REGS->lc0; \
	153	DEST.sa1 = REGS->sa1; \
	154	DEST.lc1 = REGS->lc1; \
	155	DEST.m0 = REGS->m0; \
	156	DEST.m1 = REGS->m1; \
	157	DEST.usr = REGS->usr; \
	158	DEST.p3_0 = REGS->preds; \
	159	DEST.gp = REGS->gp; \
	160	DEST.ugp = REGS->ugp; \
426d29cc RK	161	CS_COPYREGS(DEST,REGS); \
426d29cc RK	162	DEST.pc = pt_elr(REGS); \
8feca0e1 RK	163	DEST.cause = pt_cause(REGS); \
	164	DEST.badva = pt_badva(REGS); \
	165	} while (0);
	166
8feca0e1 RK	167	/*
	168	* This is used to ensure we don't load something for the wrong architecture.
	169	* Checks the machine and ABI type.
	170	*/
	171	#define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON)
	172
	173	/*
	174	* These are used to set parameters in the core dumps.
	175	*/
	176	#define ELF_CLASS ELFCLASS32
	177	#define ELF_DATA ELFDATA2LSB
	178	#define ELF_ARCH EM_HEXAGON
	179
66b03dbf	180	#if CONFIG_HEXAGON_ARCH_VERSION == 2
8feca0e1 RK	181	#define ELF_CORE_EFLAGS 0x1
	182	#endif
	183
66b03dbf	184	#if CONFIG_HEXAGON_ARCH_VERSION == 3
8feca0e1 RK	185	#define ELF_CORE_EFLAGS 0x2
	186	#endif
	187
66b03dbf	188	#if CONFIG_HEXAGON_ARCH_VERSION == 4
8feca0e1 RK	189	#define ELF_CORE_EFLAGS 0x3
	190	#endif
	191
	192	/*
	193	* Some architectures have ld.so set up a pointer to a function
	194	* to be registered using atexit, to facilitate cleanup. So that
	195	* static executables will be well-behaved, we would null the register
	196	* in question here, in the pt_regs structure passed. For now,
	197	* leave it a null macro.
	198	*/
	199	#define ELF_PLAT_INIT(regs, load_addr) do { } while (0)
	200
	201	#define USE_ELF_CORE_DUMP
	202	#define CORE_DUMP_USE_REGSET
	203
	204	/* Hrm is this going to cause problems for changing PAGE_SIZE? */
efaa5cbd	205	#define ELF_EXEC_PAGESIZE PAGE_SIZE
8feca0e1 RK	206
	207	/*
	208	* This is the location that an ET_DYN program is loaded if exec'ed. Typical
	209	* use of this is to invoke "./ld.so someprog" to test out a new version of
	210	* the loader. We need to make sure that it is out of the way of the program
	211	* that it will "exec", and that there is sufficient room for the brk.
	212	*/
	213	#define ELF_ET_DYN_BASE 0x08000000UL
	214
	215	/*
	216	* This yields a mask that user programs can use to figure out what
	217	* instruction set this cpu supports.
	218	*/
	219	#define ELF_HWCAP (0)
	220
	221	/*
	222	* This yields a string that ld.so will use to load implementation
	223	* specific libraries for optimization. This is more specific in
	224	* intent than poking at uname or /proc/cpuinfo.
	225	*/
	226	#define ELF_PLATFORM (NULL)
	227
8feca0e1 RK	228	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
	229	struct linux_binprm;
	230	extern int arch_setup_additional_pages(struct linux_binprm *bprm,
	231	int uses_interp);
	232
	233
	234	#endif