xref: /netbsd-src/sys/arch/arm/include/elf_machdep.h (revision dc2ac295848fdbeb08478f3a5bb113efa716e9ad)

/*	$NetBSD: elf_machdep.h,v 1.19 2017/11/06 03:47:45 christos Exp $	*/

#ifndef _ARM_ELF_MACHDEP_H_
#define _ARM_ELF_MACHDEP_H_

#if defined(__ARMEB__)
#define ELF32_MACHDEP_ENDIANNESS	ELFDATA2MSB
#else
#define ELF32_MACHDEP_ENDIANNESS	ELFDATA2LSB
#endif

#define ELF64_MACHDEP_ENDIANNESS	XXX	/* break compilation */
#define ELF64_MACHDEP_ID_CASES                                          \
		/* no 64-bit ELF machine types supported */

/* Processor specific flags for the ELF header e_flags field.  */
#define EF_ARM_RELEXEC		0x00000001
#define EF_ARM_HASENTRY		0x00000002
#define EF_ARM_INTERWORK	0x00000004 /* GNU binutils 000413 */
#define EF_ARM_SYMSARESORTED	0x00000004 /* ARM ELF A08 */
#define EF_ARM_APCS_26		0x00000008 /* GNU binutils 000413 */
#define EF_ARM_DYNSYMSUSESEGIDX	0x00000008 /* ARM ELF B01 */
#define EF_ARM_APCS_FLOAT	0x00000010 /* GNU binutils 000413 */
#define EF_ARM_MAPSYMSFIRST	0x00000010 /* ARM ELF B01 */
#define EF_ARM_PIC		0x00000020
#define EF_ARM_ALIGN8		0x00000040 /* 8-bit structure alignment.  */
#define EF_ARM_NEW_ABI		0x00000080
#define EF_ARM_OLD_ABI		0x00000100
#define EF_ARM_SOFT_FLOAT	0x00000200
#define EF_ARM_BE8		0x00800000
#define EF_ARM_EABIMASK		0xff000000
#define	EF_ARM_EABI_VER1	0x01000000
#define	EF_ARM_EABI_VER2	0x02000000
#define	EF_ARM_EABI_VER3	0x03000000
#define	EF_ARM_EABI_VER4	0x04000000
#define	EF_ARM_EABI_VER5	0x05000000

#define	ELF32_MACHDEP_ID_CASES						\
		case EM_ARM:						\
			break;

#define	ELF32_MACHDEP_ID	EM_ARM

#define	KERN_ELFSIZE		32
#define ARCH_ELFSIZE		32	/* MD native binary size */

/* Processor specific relocation types */

#define R_ARM_NONE		0
#define R_ARM_PC24		1
#define R_ARM_ABS32		2
#define R_ARM_REL32		3
#define R_ARM_PC13		4
#define R_ARM_ABS16		5
#define R_ARM_ABS12		6
#define R_ARM_THM_ABS5		7
#define R_ARM_ABS8		8
#define R_ARM_SBREL32		9
#define R_ARM_THM_PC22		10
#define R_ARM_THM_PC8		11
#define R_ARM_AMP_VCALL9	12
#define R_ARM_SWI24		13
#define R_ARM_THM_SWI8		14
#define R_ARM_XPC25		15
#define R_ARM_THM_XPC22		16

/* TLS relocations */
#define R_ARM_TLS_DTPMOD32	17	/* ID of module containing symbol */
#define R_ARM_TLS_DTPOFF32	18	/* Offset in TLS block */
#define R_ARM_TLS_TPOFF32	19	/* Offset in static TLS block */

/* 20-31 are reserved for ARM Linux. */
#define R_ARM_COPY		20
#define R_ARM_GLOB_DAT		21
#define	R_ARM_JUMP_SLOT		22
#define R_ARM_RELATIVE		23
#define	R_ARM_GOTOFF		24
#define R_ARM_GOTPC		25
#define R_ARM_GOT32		26
#define R_ARM_PLT32		27
#define R_ARM_CALL		28
#define R_ARM_JUMP24		29
#define R_ARM_THM_JUMP24	30
#define R_ARM_BASE_ABS		31
#define R_ARM_ALU_PCREL_7_0	32
#define R_ARM_ALU_PCREL_15_8	33
#define R_ARM_ALU_PCREL_23_15	34
#define R_ARM_ALU_SBREL_11_0	35
#define R_ARM_ALU_SBREL_19_12	36
#define R_ARM_ALU_SBREL_27_20	37	// depcreated
#define R_ARM_TARGET1		38
#define R_ARM_SBREL31		39	// deprecated
#define R_ARM_V4BX		40
#define R_ARM_TARGET2		41
#define R_ARM_PREL31		42
#define R_ARM_MOVW_ABS_NC	43
#define R_ARM_MOVT_ABS		44
#define R_ARM_MOVW_PREL_NC	45
#define R_ARM_MOVT_PREL		46
#define R_ARM_THM_MOVW_ABS_NC	47
#define R_ARM_THM_MOVT_ABS	48
#define R_ARM_THM_MOVW_PREL_NC	49
#define R_ARM_THM_MOVT_PREL	50

/* 96-111 are reserved to G++. */
#define R_ARM_GNU_VTENTRY	100
#define R_ARM_GNU_VTINHERIT	101
#define R_ARM_THM_PC11		102
#define R_ARM_THM_PC9		103

/* More TLS relocations */
#define R_ARM_TLS_GD32		104	/* PC-rel 32 bit for global dynamic */
#define R_ARM_TLS_LDM32		105	/* PC-rel 32 bit for local dynamic */
#define R_ARM_TLS_LDO32		106	/* 32 bit offset relative to TLS */
#define R_ARM_TLS_IE32		107	/* PC-rel 32 bit for GOT entry of */
#define R_ARM_TLS_LE32		108
#define R_ARM_TLS_LDO12		109
#define R_ARM_TLS_LE12		110
#define R_ARM_TLS_IE12GP	111

/* 112-127 are reserved for private experiments. */

#define R_ARM_IRELATIVE		160

#define R_ARM_RXPC25		249
#define R_ARM_RSBREL32		250
#define R_ARM_THM_RPC22		251
#define R_ARM_RREL32		252
#define R_ARM_RABS32		253
#define R_ARM_RPC24		254
#define R_ARM_RBASE		255

#define R_TYPE(name)		__CONCAT(R_ARM_,name)

/* Processor specific program header flags */
#define PF_ARM_SB		0x10000000
#define PF_ARM_PI		0x20000000
#define PF_ARM_ENTRY		0x80000000

/* Processor specific program header types */
#define PT_ARM_EXIDX		(PT_LOPROC + 1)

/* Processor specific section header flags */
#define SHF_ENTRYSECT		0x10000000
#define SHF_COMDEF		0x80000000

/* Processor specific symbol types */
#define STT_ARM_TFUNC		STT_LOPROC

#ifdef _KERNEL
#ifdef ELFSIZE
#define	ELF_MD_PROBE_FUNC	ELFNAME2(arm_netbsd,probe)
#define	ELF_MD_COREDUMP_SETUP	ELFNAME2(arm_netbsd,coredump_setup)
#endif

struct exec_package;

int arm_netbsd_elf32_probe(struct lwp *, struct exec_package *, void *, char *,
	vaddr_t *);
void arm_netbsd_elf32_coredump_setup(struct lwp *, void *);
#endif

#endif /* _ARM_ELF_MACHDEP_H_ */