~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/xtensa/include/asm/elf.h

Version: ~ [ linux-5.9.1 ] ~ [ linux-5.8.16 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.72 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.152 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.202 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.240 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.240 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 #include <asm/coprocessor.h>
 18 
 19 /* Xtensa processor ELF architecture-magic number */
 20 
 21 #define EM_XTENSA       94
 22 #define EM_XTENSA_OLD   0xABC7
 23 
 24 /* Xtensa relocations defined by the ABIs */
 25 
 26 #define R_XTENSA_NONE           0
 27 #define R_XTENSA_32             1
 28 #define R_XTENSA_RTLD           2
 29 #define R_XTENSA_GLOB_DAT       3
 30 #define R_XTENSA_JMP_SLOT       4
 31 #define R_XTENSA_RELATIVE       5
 32 #define R_XTENSA_PLT            6
 33 #define R_XTENSA_OP0            8
 34 #define R_XTENSA_OP1            9
 35 #define R_XTENSA_OP2            10
 36 #define R_XTENSA_ASM_EXPAND     11
 37 #define R_XTENSA_ASM_SIMPLIFY   12
 38 #define R_XTENSA_GNU_VTINHERIT  15
 39 #define R_XTENSA_GNU_VTENTRY    16
 40 #define R_XTENSA_DIFF8          17
 41 #define R_XTENSA_DIFF16         18
 42 #define R_XTENSA_DIFF32         19
 43 #define R_XTENSA_SLOT0_OP       20
 44 #define R_XTENSA_SLOT1_OP       21
 45 #define R_XTENSA_SLOT2_OP       22
 46 #define R_XTENSA_SLOT3_OP       23
 47 #define R_XTENSA_SLOT4_OP       24
 48 #define R_XTENSA_SLOT5_OP       25
 49 #define R_XTENSA_SLOT6_OP       26
 50 #define R_XTENSA_SLOT7_OP       27
 51 #define R_XTENSA_SLOT8_OP       28
 52 #define R_XTENSA_SLOT9_OP       29
 53 #define R_XTENSA_SLOT10_OP      30
 54 #define R_XTENSA_SLOT11_OP      31
 55 #define R_XTENSA_SLOT12_OP      32
 56 #define R_XTENSA_SLOT13_OP      33
 57 #define R_XTENSA_SLOT14_OP      34
 58 #define R_XTENSA_SLOT0_ALT      35
 59 #define R_XTENSA_SLOT1_ALT      36
 60 #define R_XTENSA_SLOT2_ALT      37
 61 #define R_XTENSA_SLOT3_ALT      38
 62 #define R_XTENSA_SLOT4_ALT      39
 63 #define R_XTENSA_SLOT5_ALT      40
 64 #define R_XTENSA_SLOT6_ALT      41
 65 #define R_XTENSA_SLOT7_ALT      42
 66 #define R_XTENSA_SLOT8_ALT      43
 67 #define R_XTENSA_SLOT9_ALT      44
 68 #define R_XTENSA_SLOT10_ALT     45
 69 #define R_XTENSA_SLOT11_ALT     46
 70 #define R_XTENSA_SLOT12_ALT     47
 71 #define R_XTENSA_SLOT13_ALT     48
 72 #define R_XTENSA_SLOT14_ALT     49
 73 
 74 /* ELF register definitions. This is needed for core dump support.  */
 75 
 76 typedef unsigned long elf_greg_t;
 77 
 78 typedef struct {
 79         elf_greg_t pc;
 80         elf_greg_t ps;
 81         elf_greg_t lbeg;
 82         elf_greg_t lend;
 83         elf_greg_t lcount;
 84         elf_greg_t sar;
 85         elf_greg_t windowstart;
 86         elf_greg_t windowbase;
 87         elf_greg_t threadptr;
 88         elf_greg_t reserved[7+48];
 89         elf_greg_t a[64];
 90 } xtensa_gregset_t;
 91 
 92 #define ELF_NGREG       (sizeof(xtensa_gregset_t) / sizeof(elf_greg_t))
 93 
 94 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 95 
 96 #define ELF_NFPREG      18
 97 
 98 typedef unsigned int elf_fpreg_t;
 99 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
100 
101 #define ELF_CORE_COPY_REGS(_eregs, _pregs)                              \
102         xtensa_elf_core_copy_regs ((xtensa_gregset_t*)&(_eregs), _pregs);
103 
104 extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *);
105 
106 /*
107  * This is used to ensure we don't load something for the wrong architecture.
108  */
109 
110 #define elf_check_arch(x) ( ( (x)->e_machine == EM_XTENSA )  || \
111                             ( (x)->e_machine == EM_XTENSA_OLD ) )
112 
113 /*
114  * These are used to set parameters in the core dumps.
115  */
116 
117 #ifdef __XTENSA_EL__
118 # define ELF_DATA       ELFDATA2LSB
119 #elif defined(__XTENSA_EB__)
120 # define ELF_DATA       ELFDATA2MSB
121 #else
122 # error processor byte order undefined!
123 #endif
124 
125 #define ELF_CLASS       ELFCLASS32
126 #define ELF_ARCH        EM_XTENSA
127 
128 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
129 
130 /*
131  * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
132  * use of this is to invoke "./ld.so someprog" to test out a new version of
133  * the loader.  We need to make sure that it is out of the way of the program
134  * that it will "exec", and that there is sufficient room for the brk.
135  */
136 
137 #define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)
138 
139 /*
140  * This yields a mask that user programs can use to figure out what
141  * instruction set this CPU supports.  This could be done in user space,
142  * but it's not easy, and we've already done it here.
143  */
144 
145 #define ELF_HWCAP       (0)
146 
147 /*
148  * This yields a string that ld.so will use to load implementation
149  * specific libraries for optimization.  This is more specific in
150  * intent than poking at uname or /proc/cpuinfo.
151  * For the moment, we have only optimizations for the Intel generations,
152  * but that could change...
153  */
154 
155 #define ELF_PLATFORM  (NULL)
156 
157 /*
158  * The Xtensa processor ABI says that when the program starts, a2
159  * contains a pointer to a function which might be registered using
160  * `atexit'.  This provides a mean for the dynamic linker to call
161  * DT_FINI functions for shared libraries that have been loaded before
162  * the code runs.
163  *
164  * A value of 0 tells we have no such handler.
165  *
166  * We might as well make sure everything else is cleared too (except
167  * for the stack pointer in a1), just to make things more
168  * deterministic.  Also, clearing a0 terminates debugger backtraces.
169  */
170 
171 #define ELF_PLAT_INIT(_r, load_addr) \
172         do { _r->areg[0]=0; /*_r->areg[1]=0;*/ _r->areg[2]=0;  _r->areg[3]=0;  \
173              _r->areg[4]=0;  _r->areg[5]=0;    _r->areg[6]=0;  _r->areg[7]=0;  \
174              _r->areg[8]=0;  _r->areg[9]=0;    _r->areg[10]=0; _r->areg[11]=0; \
175              _r->areg[12]=0; _r->areg[13]=0;   _r->areg[14]=0; _r->areg[15]=0; \
176         } while (0)
177 
178 typedef struct {
179         xtregs_opt_t    opt;
180         xtregs_user_t   user;
181 #if XTENSA_HAVE_COPROCESSORS
182         xtregs_cp0_t    cp0;
183         xtregs_cp1_t    cp1;
184         xtregs_cp2_t    cp2;
185         xtregs_cp3_t    cp3;
186         xtregs_cp4_t    cp4;
187         xtregs_cp5_t    cp5;
188         xtregs_cp6_t    cp6;
189         xtregs_cp7_t    cp7;
190 #endif
191 } elf_xtregs_t;
192 
193 #define SET_PERSONALITY(ex) \
194         set_personality(PER_LINUX_32BIT | (current->personality & (~PER_MASK)))
195 
196 struct task_struct;
197 
198 extern void do_copy_regs (xtensa_gregset_t*, struct pt_regs*,
199                           struct task_struct*);
200 extern void do_restore_regs (xtensa_gregset_t*, struct pt_regs*,
201                              struct task_struct*);
202 extern void do_save_fpregs (elf_fpregset_t*, struct pt_regs*,
203                             struct task_struct*);
204 extern int do_restore_fpregs (elf_fpregset_t*, struct pt_regs*,
205                               struct task_struct*);
206 
207 #endif  /* _XTENSA_ELF_H */
208 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp