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elf_machdep.h revision 1.1 
      1 /* $NetBSD: elf_machdep.h,v 1.1 2014/09/19 17:36:26 matt Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2014 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Matt Thomas of 3am Software Foundry.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _RISCV_ELF_MACHDEP_H_
     33 #define _RISCV_ELF_MACHDEP_H_
     34 
     35 #define	ELF32_MACHDEP_ID		EM_RISCV
     36 
     37 #define ELF32_MACHDEP_ENDIANNESS	ELFDATA2LSB
     38 #define ELF64_MACHDEP_ENDIANNESS	ELFDATA2LSB
     39 
     40 #define ELF32_MACHDEP_ID_CASES		\
     41 		case EM_RISCV:		\
     42 			break;
     43 
     44 #define	ELF64_MACHDEP_ID_CASES		\
     45 		case EM_RISCV:		\
     46 			break;
     47 
     48 #ifdef _LP64
     49 #define ARCH_ELFSIZE		64	/* MD native binary size */
     50 #else
     51 #define ARCH_ELFSIZE		32	/* MD native binary size */
     52 #endif
     53 
     54 /* Processor specific flags for the ELF header e_flags field.  */
     55 
     56 /* Processor specific relocation types */
     57 
     58 #define R_RISCV_NONE		0
     59 #define R_RISCV_32		2	// A
     60 #define R_RISCV_REL32		3	// A & 0xffff
     61 #define R_RISCV_JAL		4	// A & 0xff
     62 #define R_RISCV_HI20		5	// A & 0xffff
     63 #define R_RISCV_LO12_I		6	// (A >> 16) & 0xffff
     64 #define R_RISCV_LO12_S		7	// (S + A - P) >> 2
     65 #define R_RISCV_PCREL_LO12_I	8
     66 #define R_RISCV_PCREL_LO12_S	9
     67 #define R_RISCV_BRANCH		10	// (A - P) & 0xffff
     68 #define R_RISCV_CALL		11	// (A - P) & 0xff
     69 #define R_RISCV_PCREL_HI20	12
     70 #define R_RISCV_CALL_PLT	13
     71 #define R_RISCV_64		18
     72 #define R_RISCV_GOT_HI20	22
     73 #define R_RISCV_GOT_LO12	23
     74 #define R_RISCV_COPY		24
     75 #define R_RISCV_JMP_SLOT	25
     76 /* TLS relocations. */
     77 #define R_RISCV_TLS_IE_HI20	29
     78 #define R_RISCV_TLS_IE_LO12	30
     79 #define R_RISCV_TLS_IE_ADD	31
     80 #define R_RISCV_TLS_IE_LO12_I	32
     81 #define R_RISCV_TLS_IE_LO12_S	33
     82 #define R_RISCV_TPREL_HI20	34
     83 #define R_RISCV_TLREL_LO12_I	35
     84 #define R_RISCV_TLREL_LO12_S	36
     85 #define R_RISCV_TLREL_ADD	37
     86 
     87 #define R_RISCV_TLS_DTPMOD32	38
     88 #define R_RISCV_TLS_DTPREL32	39
     89 #define R_RISCV_TLS_DTPMOD64	40
     90 #define R_RISCV_TLS_DTPREL64	41
     91 #define R_RISCV_TLS_DTPREL_HI16	44
     92 #define R_RISCV_TLS_DTPREL_LO16	45
     93 #define R_RISCV_TLS_PCREL_LO12	50
     94 #define R_RISCV_TLS_GOT_HI20	51
     95 #define R_RISCV_TLS_GOT_LO20	52
     96 #define R_RISCV_TLS_GD_HI20	53
     97 #define R_RISCV_TLS_GD_LO20	54
     98 
     99 #define R_RISCV_GLOB_DAT	57
    100 #define R_RISCV_ADD32		58
    101 #define R_RISCV_SUB32		59
    102 #define R_RISCV_ADD64		60
    103 #define R_RISCV_SUB64		61
    104 
    105 #define R_TYPE(name)		R_RISCV_ ## name
    106 #define R_TLS_TYPE(name)	R_RISCV_ ## name ## 64
    107 
    108 #define DT_RISCV_LOCAL_GOTNO	(DT_LOPROC + 0)
    109 #define DT_RISCV_SYMTABNO	(DT_LOPROC + 1)
    110 #define DT_RISCV_GOTSYM		(DT_LOPROC + 2)
    111 #define DT_RISCV_PLTGOT		(DT_LOPROC + 3)
    112 
    113 #ifdef _KERNEL
    114 #ifdef ELFSIZE
    115 #define ELF_MD_PROBE_FUNC       ELFNAME2(cpu_netbsd,probe)
    116 #endif
    117 
    118 struct exec_package;
    119 
    120 int cpu_netbsd_elf32_probe(struct lwp *, struct exec_package *, void *, char *,
    121         vaddr_t *);
    122 
    123 int cpu_netbsd_elf64_probe(struct lwp *, struct exec_package *, void *, char *,
    124         vaddr_t *);
    125 
    126 #endif /* _KERNEL */
    127 
    128 #endif /* _RISCV_ELF_MACHDEP_H_ */
    129