diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-01-10 18:51:06 -0500 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-01-10 18:51:06 -0500 |
commit | 0811a433c61e85f895018239c4466a36311cd5de (patch) | |
tree | 276933e518e5525d24ae37b02df2db9909679260 /arch/xtensa/include/asm/elf.h | |
parent | c299030765292434b73572f9bcfe84951ff06614 (diff) | |
parent | 3d14bdad40315b54470cb7812293d14c8af2bf7d (diff) |
Merge branch 'linus' into core/iommu
Diffstat (limited to 'arch/xtensa/include/asm/elf.h')
-rw-r--r-- | arch/xtensa/include/asm/elf.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/elf.h b/arch/xtensa/include/asm/elf.h new file mode 100644 index 000000000000..c3f53e755ca5 --- /dev/null +++ b/arch/xtensa/include/asm/elf.h | |||
@@ -0,0 +1,205 @@ | |||
1 | /* | ||
2 | * include/asm-xtensa/elf.h | ||
3 | * | ||
4 | * ELF register definitions | ||
5 | * | ||
6 | * This file is subject to the terms and conditions of the GNU General Public | ||
7 | * License. See the file "COPYING" in the main directory of this archive | ||
8 | * for more details. | ||
9 | * | ||
10 | * Copyright (C) 2001 - 2005 Tensilica Inc. | ||
11 | */ | ||
12 | |||
13 | #ifndef _XTENSA_ELF_H | ||
14 | #define _XTENSA_ELF_H | ||
15 | |||
16 | #include <asm/ptrace.h> | ||
17 | |||
18 | /* Xtensa processor ELF architecture-magic number */ | ||
19 | |||
20 | #define EM_XTENSA 94 | ||
21 | #define EM_XTENSA_OLD 0xABC7 | ||
22 | |||
23 | /* Xtensa relocations defined by the ABIs */ | ||
24 | |||
25 | #define R_XTENSA_NONE 0 | ||
26 | #define R_XTENSA_32 1 | ||
27 | #define R_XTENSA_RTLD 2 | ||
28 | #define R_XTENSA_GLOB_DAT 3 | ||
29 | #define R_XTENSA_JMP_SLOT 4 | ||
30 | #define R_XTENSA_RELATIVE 5 | ||
31 | #define R_XTENSA_PLT 6 | ||
32 | #define R_XTENSA_OP0 8 | ||
33 | #define R_XTENSA_OP1 9 | ||
34 | #define R_XTENSA_OP2 10 | ||
35 | #define R_XTENSA_ASM_EXPAND 11 | ||
36 | #define R_XTENSA_ASM_SIMPLIFY 12 | ||
37 | #define R_XTENSA_GNU_VTINHERIT 15 | ||
38 | #define R_XTENSA_GNU_VTENTRY 16 | ||
39 | #define R_XTENSA_DIFF8 17 | ||
40 | #define R_XTENSA_DIFF16 18 | ||
41 | #define R_XTENSA_DIFF32 19 | ||
42 | #define R_XTENSA_SLOT0_OP 20 | ||
43 | #define R_XTENSA_SLOT1_OP 21 | ||
44 | #define R_XTENSA_SLOT2_OP 22 | ||
45 | #define R_XTENSA_SLOT3_OP 23 | ||
46 | #define R_XTENSA_SLOT4_OP 24 | ||
47 | #define R_XTENSA_SLOT5_OP 25 | ||
48 | #define R_XTENSA_SLOT6_OP 26 | ||
49 | #define R_XTENSA_SLOT7_OP 27 | ||
50 | #define R_XTENSA_SLOT8_OP 28 | ||
51 | #define R_XTENSA_SLOT9_OP 29 | ||
52 | #define R_XTENSA_SLOT10_OP 30 | ||
53 | #define R_XTENSA_SLOT11_OP 31 | ||
54 | #define R_XTENSA_SLOT12_OP 32 | ||
55 | #define R_XTENSA_SLOT13_OP 33 | ||
56 | #define R_XTENSA_SLOT14_OP 34 | ||
57 | #define R_XTENSA_SLOT0_ALT 35 | ||
58 | #define R_XTENSA_SLOT1_ALT 36 | ||
59 | #define R_XTENSA_SLOT2_ALT 37 | ||
60 | #define R_XTENSA_SLOT3_ALT 38 | ||
61 | #define R_XTENSA_SLOT4_ALT 39 | ||
62 | #define R_XTENSA_SLOT5_ALT 40 | ||
63 | #define R_XTENSA_SLOT6_ALT 41 | ||
64 | #define R_XTENSA_SLOT7_ALT 42 | ||
65 | #define R_XTENSA_SLOT8_ALT 43 | ||
66 | #define R_XTENSA_SLOT9_ALT 44 | ||
67 | #define R_XTENSA_SLOT10_ALT 45 | ||
68 | #define R_XTENSA_SLOT11_ALT 46 | ||
69 | #define R_XTENSA_SLOT12_ALT 47 | ||
70 | #define R_XTENSA_SLOT13_ALT 48 | ||
71 | #define R_XTENSA_SLOT14_ALT 49 | ||
72 | |||
73 | /* ELF register definitions. This is needed for core dump support. */ | ||
74 | |||
75 | typedef unsigned long elf_greg_t; | ||
76 | |||
77 | typedef struct { | ||
78 | elf_greg_t pc; | ||
79 | elf_greg_t ps; | ||
80 | elf_greg_t lbeg; | ||
81 | elf_greg_t lend; | ||
82 | elf_greg_t lcount; | ||
83 | elf_greg_t sar; | ||
84 | elf_greg_t windowstart; | ||
85 | elf_greg_t windowbase; | ||
86 | elf_greg_t reserved[8+48]; | ||
87 | elf_greg_t a[64]; | ||
88 | } xtensa_gregset_t; | ||
89 | |||
90 | #define ELF_NGREG (sizeof(xtensa_gregset_t) / sizeof(elf_greg_t)) | ||
91 | |||
92 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; | ||
93 | |||
94 | #define ELF_NFPREG 18 | ||
95 | |||
96 | typedef unsigned int elf_fpreg_t; | ||
97 | typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; | ||
98 | |||
99 | #define ELF_CORE_COPY_REGS(_eregs, _pregs) \ | ||
100 | xtensa_elf_core_copy_regs ((xtensa_gregset_t*)&(_eregs), _pregs); | ||
101 | |||
102 | extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *); | ||
103 | |||
104 | /* | ||
105 | * This is used to ensure we don't load something for the wrong architecture. | ||
106 | */ | ||
107 | |||
108 | #define elf_check_arch(x) ( ( (x)->e_machine == EM_XTENSA ) || \ | ||
109 | ( (x)->e_machine == EM_XTENSA_OLD ) ) | ||
110 | |||
111 | /* | ||
112 | * These are used to set parameters in the core dumps. | ||
113 | */ | ||
114 | |||
115 | #ifdef __XTENSA_EL__ | ||
116 | # define ELF_DATA ELFDATA2LSB | ||
117 | #elif defined(__XTENSA_EB__) | ||
118 | # define ELF_DATA ELFDATA2MSB | ||
119 | #else | ||
120 | # error processor byte order undefined! | ||
121 | #endif | ||
122 | |||
123 | #define ELF_CLASS ELFCLASS32 | ||
124 | #define ELF_ARCH EM_XTENSA | ||
125 | |||
126 | #define USE_ELF_CORE_DUMP | ||
127 | #define ELF_EXEC_PAGESIZE PAGE_SIZE | ||
128 | |||
129 | /* | ||
130 | * This is the location that an ET_DYN program is loaded if exec'ed. Typical | ||
131 | * use of this is to invoke "./ld.so someprog" to test out a new version of | ||
132 | * the loader. We need to make sure that it is out of the way of the program | ||
133 | * that it will "exec", and that there is sufficient room for the brk. | ||
134 | */ | ||
135 | |||
136 | #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) | ||
137 | |||
138 | /* | ||
139 | * This yields a mask that user programs can use to figure out what | ||
140 | * instruction set this CPU supports. This could be done in user space, | ||
141 | * but it's not easy, and we've already done it here. | ||
142 | */ | ||
143 | |||
144 | #define ELF_HWCAP (0) | ||
145 | |||
146 | /* | ||
147 | * This yields a string that ld.so will use to load implementation | ||
148 | * specific libraries for optimization. This is more specific in | ||
149 | * intent than poking at uname or /proc/cpuinfo. | ||
150 | * For the moment, we have only optimizations for the Intel generations, | ||
151 | * but that could change... | ||
152 | */ | ||
153 | |||
154 | #define ELF_PLATFORM (NULL) | ||
155 | |||
156 | /* | ||
157 | * The Xtensa processor ABI says that when the program starts, a2 | ||
158 | * contains a pointer to a function which might be registered using | ||
159 | * `atexit'. This provides a mean for the dynamic linker to call | ||
160 | * DT_FINI functions for shared libraries that have been loaded before | ||
161 | * the code runs. | ||
162 | * | ||
163 | * A value of 0 tells we have no such handler. | ||
164 | * | ||
165 | * We might as well make sure everything else is cleared too (except | ||
166 | * for the stack pointer in a1), just to make things more | ||
167 | * deterministic. Also, clearing a0 terminates debugger backtraces. | ||
168 | */ | ||
169 | |||
170 | #define ELF_PLAT_INIT(_r, load_addr) \ | ||
171 | do { _r->areg[0]=0; /*_r->areg[1]=0;*/ _r->areg[2]=0; _r->areg[3]=0; \ | ||
172 | _r->areg[4]=0; _r->areg[5]=0; _r->areg[6]=0; _r->areg[7]=0; \ | ||
173 | _r->areg[8]=0; _r->areg[9]=0; _r->areg[10]=0; _r->areg[11]=0; \ | ||
174 | _r->areg[12]=0; _r->areg[13]=0; _r->areg[14]=0; _r->areg[15]=0; \ | ||
175 | } while (0) | ||
176 | |||
177 | typedef struct { | ||
178 | xtregs_opt_t opt; | ||
179 | xtregs_user_t user; | ||
180 | #if XTENSA_HAVE_COPROCESSORS | ||
181 | xtregs_cp0_t cp0; | ||
182 | xtregs_cp1_t cp1; | ||
183 | xtregs_cp2_t cp2; | ||
184 | xtregs_cp3_t cp3; | ||
185 | xtregs_cp4_t cp4; | ||
186 | xtregs_cp5_t cp5; | ||
187 | xtregs_cp6_t cp6; | ||
188 | xtregs_cp7_t cp7; | ||
189 | #endif | ||
190 | } elf_xtregs_t; | ||
191 | |||
192 | #define SET_PERSONALITY(ex) set_personality(PER_LINUX_32BIT) | ||
193 | |||
194 | struct task_struct; | ||
195 | |||
196 | extern void do_copy_regs (xtensa_gregset_t*, struct pt_regs*, | ||
197 | struct task_struct*); | ||
198 | extern void do_restore_regs (xtensa_gregset_t*, struct pt_regs*, | ||
199 | struct task_struct*); | ||
200 | extern void do_save_fpregs (elf_fpregset_t*, struct pt_regs*, | ||
201 | struct task_struct*); | ||
202 | extern int do_restore_fpregs (elf_fpregset_t*, struct pt_regs*, | ||
203 | struct task_struct*); | ||
204 | |||
205 | #endif /* _XTENSA_ELF_H */ | ||