1 /* Arm specific symbolic name handling.
2 Copyright (C) 2002 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2002.
4
5 This program is Open Source software; you can redistribute it and/or
6 modify it under the terms of the Open Software License version 1.0 as
7 published by the Open Source Initiative.
8
9 You should have received a copy of the Open Software License along
10 with this program; if not, you may obtain a copy of the Open Software
11 License version 1.0 from http://www.opensource.org/licenses/osl.php or
12 by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
13 3001 King Ranch Road, Ukiah, CA 95482. */
14
15 #ifdef HAVE_CONFIG_H
16 # include <config.h>
17 #endif
18
19 #include <elf.h>
20 #include <stddef.h>
21
22 #include <libebl_arm.h>
23
24
25 /* Return of the backend. */
26 const char *
arm_backend_name(void)27 arm_backend_name (void)
28 {
29 return "arm";
30 }
31
32
33 /* Relocation mapping table. */
34 static const char *reloc_map_table[] =
35 {
36 [R_ARM_NONE] = "R_ARM_NONE",
37 [R_ARM_PC24] = "R_ARM_PC24",
38 [R_ARM_ABS32] = "R_ARM_ABS32",
39 [R_ARM_REL32] = "R_ARM_REL32",
40 [R_ARM_PC13] = "R_ARM_PC13",
41 [R_ARM_ABS16] = "R_ARM_ABS16",
42 [R_ARM_ABS12] = "R_ARM_ABS12",
43 [R_ARM_THM_ABS5] = "R_ARM_THM_ABS5",
44 [R_ARM_ABS8] = "R_ARM_ABS8",
45 [R_ARM_SBREL32] = "R_ARM_SBREL32",
46 [R_ARM_THM_PC22] = "R_ARM_THM_PC22",
47 [R_ARM_THM_PC8] = "R_ARM_THM_PC8",
48 [R_ARM_AMP_VCALL9] = "R_ARM_AMP_VCALL9",
49 [R_ARM_SWI24] = "R_ARM_SWI24",
50 [R_ARM_THM_SWI8] = "R_ARM_THM_SWI8",
51 [R_ARM_XPC25] = "R_ARM_XPC25",
52 [R_ARM_THM_XPC22] = "R_ARM_THM_XPC22",
53 [R_ARM_COPY] = "R_ARM_COPY",
54 [R_ARM_GLOB_DAT] = "R_ARM_GLOB_DAT",
55 [R_ARM_JUMP_SLOT] = "R_ARM_JUMP_SLOT",
56 [R_ARM_RELATIVE] = "R_ARM_RELATIVE",
57 [R_ARM_GOTOFF] = "R_ARM_GOTOFF",
58 [R_ARM_GOTPC] = "R_ARM_GOTPC",
59 [R_ARM_GOT32] = "R_ARM_GOT32",
60 [R_ARM_PLT32] = "R_ARM_PLT32",
61 [R_ARM_ALU_PCREL_7_0] = "R_ARM_ALU_PCREL_7_0",
62 [R_ARM_ALU_PCREL_15_8] = "R_ARM_ALU_PCREL_15_8",
63 [R_ARM_ALU_PCREL_23_15] = "R_ARM_ALU_PCREL_23_15",
64 [R_ARM_LDR_SBREL_11_0] = "R_ARM_LDR_SBREL_11_0",
65 [R_ARM_ALU_SBREL_19_12] = "R_ARM_ALU_SBREL_19_12",
66 [R_ARM_ALU_SBREL_27_20] = "R_ARM_ALU_SBREL_27_20"
67 };
68
69 static const char *reloc_map_table2[] =
70 {
71 [R_ARM_GNU_VTENTRY] = "R_ARM_GNU_VTENTRY",
72 [R_ARM_GNU_VTINHERIT] = "R_ARM_GNU_VTINHERIT",
73 [R_ARM_THM_PC11] = "R_ARM_THM_PC11",
74 [R_ARM_THM_PC9] = "R_ARM_THM_PC9"
75 };
76
77 static const char *reloc_map_table3[] =
78 {
79 [R_ARM_RXPC25] = "R_ARM_RXPC25",
80 [R_ARM_RSBREL32] = "R_ARM_RSBREL32",
81 [R_ARM_THM_RPC22] = "R_ARM_THM_RPC22",
82 [R_ARM_RREL32] = "R_ARM_RREL32",
83 [R_ARM_RABS22] = "R_ARM_RABS22",
84 [R_ARM_RPC24] = "R_ARM_RPC24",
85 [R_ARM_RBASE] = "R_ARM_RBASE"
86 };
87
88
89 /* Determine relocation type string for Alpha. */
90 const char *
arm_reloc_type_name(int type,char * buf,size_t len)91 arm_reloc_type_name (int type, char *buf, size_t len)
92 {
93 if (type >= R_ARM_NONE && type <= R_ARM_ALU_SBREL_27_20)
94 return reloc_map_table[type];
95
96 if (type >= R_ARM_GNU_VTENTRY && type <= R_ARM_THM_PC9)
97 return reloc_map_table2[type - R_ARM_GNU_VTENTRY];
98
99 if (type >= R_ARM_RXPC25 && type <= R_ARM_RBASE)
100 return reloc_map_table3[type - R_ARM_RXPC25];
101
102 return NULL;
103 }
104
105
106 /* Check for correct relocation type. */
107 bool
arm_reloc_type_check(int type)108 arm_reloc_type_check (int type)
109 {
110 return ((type >= R_ARM_NONE && type <= R_ARM_ALU_SBREL_27_20)
111 || (type >= R_ARM_GNU_VTENTRY && type <= R_ARM_THM_PC9)
112 || (type >= R_ARM_RXPC25 && type <= R_ARM_RBASE)) ? true : false;
113 }
114