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elf.h

#ifndef __ASM_SH_ELF_H
#define __ASM_SH_ELF_H

#include <linux/utsname.h>
#include <asm/auxvec.h>
#include <asm/ptrace.h>
#include <asm/user.h>

/* ELF header e_flags defines */
#define EF_SH_PIC       0x100 /* -fpic */
#define EF_SH_FDPIC           0x8000      /* -mfdpic */

/* SH (particularly SHcompact) relocation types  */
#define     R_SH_NONE         0
#define     R_SH_DIR32        1
#define     R_SH_REL32        2
#define     R_SH_DIR8WPN            3
#define     R_SH_IND12W       4
#define     R_SH_DIR8WPL            5
#define     R_SH_DIR8WPZ            6
#define     R_SH_DIR8BP       7
#define     R_SH_DIR8W        8
#define     R_SH_DIR8L        9
#define     R_SH_SWITCH16           25
#define     R_SH_SWITCH32           26
#define     R_SH_USES         27
#define     R_SH_COUNT        28
#define     R_SH_ALIGN        29
#define     R_SH_CODE         30
#define     R_SH_DATA         31
#define     R_SH_LABEL        32
#define     R_SH_SWITCH8            33
#define     R_SH_GNU_VTINHERIT      34
#define     R_SH_GNU_VTENTRY  35
#define     R_SH_TLS_GD_32          144
#define     R_SH_TLS_LD_32          145
#define     R_SH_TLS_LDO_32         146
#define     R_SH_TLS_IE_32          147
#define     R_SH_TLS_LE_32          148
#define     R_SH_TLS_DTPMOD32 149
#define     R_SH_TLS_DTPOFF32 150
#define     R_SH_TLS_TPOFF32  151
#define     R_SH_GOT32        160
#define     R_SH_PLT32        161
#define     R_SH_COPY         162
#define     R_SH_GLOB_DAT           163
#define     R_SH_JMP_SLOT           164
#define     R_SH_RELATIVE           165
#define     R_SH_GOTOFF       166
#define     R_SH_GOTPC        167

/* FDPIC relocs */
#define R_SH_GOT20            70
#define R_SH_GOTOFF20         71
#define R_SH_GOTFUNCDESC      72
#define R_SH_GOTFUNCDESC20    73
#define R_SH_GOTOFFFUNCDESC   74
#define R_SH_GOTOFFFUNCDESC20 75
#define R_SH_FUNCDESC         76
#define R_SH_FUNCDESC_VALUE   77

#if 0 /* XXX - later .. */
#define R_SH_GOT20            198
#define R_SH_GOTOFF20         199
#define R_SH_GOTFUNCDESC      200
#define R_SH_GOTFUNCDESC20    201
#define R_SH_GOTOFFFUNCDESC   202
#define R_SH_GOTOFFFUNCDESC20 203
#define R_SH_FUNCDESC         204
#define R_SH_FUNCDESC_VALUE   205
#endif

/* SHmedia relocs */
#define R_SH_IMM_LOW16        246
#define R_SH_IMM_LOW16_PCREL  247
#define R_SH_IMM_MEDLOW16     248
#define R_SH_IMM_MEDLOW16_PCREL     249
/* Keep this the last entry.  */
#define     R_SH_NUM          256

/*
 * ELF register definitions..
 */

typedef unsigned long elf_greg_t;

#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];

typedef struct user_fpu_struct elf_fpregset_t;

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS ELFCLASS32
#ifdef __LITTLE_ENDIAN__
#define ELF_DATA  ELFDATA2LSB
#else
#define ELF_DATA  ELFDATA2MSB
#endif
#define ELF_ARCH  EM_SH

#ifdef __KERNEL__
/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(x)           ((x)->e_machine == EM_SH)
#define elf_check_fdpic(x)          ((x)->e_flags & EF_SH_FDPIC)
#define elf_check_const_displacement(x)   ((x)->e_flags & EF_SH_PIC)

#define USE_ELF_CORE_DUMP
#define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC
#define ELF_EXEC_PAGESIZE     PAGE_SIZE

/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
   use of this is to invoke "./ld.so someprog" to test out a new version of
   the loader.  We need to make sure that it is out of the way of the program
   that it will "exec", and that there is sufficient room for the brk.  */

#define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)

#define ELF_CORE_COPY_REGS(_dest,_regs)                     \
      memcpy((char *) &_dest, (char *) _regs,               \
             sizeof(struct pt_regs));

/* This yields a mask that user programs can use to figure out what
   instruction set this CPU supports.  This could be done in user space,
   but it's not easy, and we've already done it here.  */

#define ELF_HWCAP (boot_cpu_data.flags)

/* This yields a string that ld.so will use to load implementation
   specific libraries for optimization.  This is more specific in
   intent than poking at uname or /proc/cpuinfo.

   For the moment, we have only optimizations for the Intel generations,
   but that could change... */

#define ELF_PLATFORM    (utsname()->machine)

#ifdef __SH5__
#define ELF_PLAT_INIT(_r, load_addr) \
  do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
       _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
       _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
       _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; _r->regs[15]=0; \
       _r->regs[16]=0; _r->regs[17]=0; _r->regs[18]=0; _r->regs[19]=0; \
       _r->regs[20]=0; _r->regs[21]=0; _r->regs[22]=0; _r->regs[23]=0; \
       _r->regs[24]=0; _r->regs[25]=0; _r->regs[26]=0; _r->regs[27]=0; \
       _r->regs[28]=0; _r->regs[29]=0; _r->regs[30]=0; _r->regs[31]=0; \
       _r->regs[32]=0; _r->regs[33]=0; _r->regs[34]=0; _r->regs[35]=0; \
       _r->regs[36]=0; _r->regs[37]=0; _r->regs[38]=0; _r->regs[39]=0; \
       _r->regs[40]=0; _r->regs[41]=0; _r->regs[42]=0; _r->regs[43]=0; \
       _r->regs[44]=0; _r->regs[45]=0; _r->regs[46]=0; _r->regs[47]=0; \
       _r->regs[48]=0; _r->regs[49]=0; _r->regs[50]=0; _r->regs[51]=0; \
       _r->regs[52]=0; _r->regs[53]=0; _r->regs[54]=0; _r->regs[55]=0; \
       _r->regs[56]=0; _r->regs[57]=0; _r->regs[58]=0; _r->regs[59]=0; \
       _r->regs[60]=0; _r->regs[61]=0; _r->regs[62]=0; \
       _r->tregs[0]=0; _r->tregs[1]=0; _r->tregs[2]=0; _r->tregs[3]=0; \
       _r->tregs[4]=0; _r->tregs[5]=0; _r->tregs[6]=0; _r->tregs[7]=0; \
       _r->sr = SR_FD | SR_MMU; } while (0)
#else
#define ELF_PLAT_INIT(_r, load_addr) \
  do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
       _r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
       _r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
       _r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \
       _r->sr = SR_FD; } while (0)

#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \
                      _dynamic_addr)                        \
do {                                                  \
      _r->regs[0] = 0;                                \
      _r->regs[1] = 0;                                \
      _r->regs[2] = 0;                                \
      _r->regs[3] = 0;                                \
      _r->regs[4] = 0;                                \
      _r->regs[5] = 0;                                \
      _r->regs[6] = 0;                                \
      _r->regs[7] = 0;                                \
      _r->regs[8] = _exec_map_addr;                   \
      _r->regs[9] = _interp_map_addr;                       \
      _r->regs[10]      = _dynamic_addr;                    \
      _r->regs[11]      = 0;                                \
      _r->regs[12]      = 0;                                \
      _r->regs[13]      = 0;                                \
      _r->regs[14]      = 0;                                \
      _r->sr            = SR_FD;                            \
} while (0)
#endif

#define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX_32BIT)
struct task_struct;
extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);

#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)

#ifdef CONFIG_VSYSCALL
/* vDSO has arch_setup_additional_pages */
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
                               int executable_stack);

extern unsigned int vdso_enabled;
extern void __kernel_vsyscall;

#define VDSO_BASE       ((unsigned long)current->mm->context.vdso)
#define VDSO_SYM(x)           (VDSO_BASE + (unsigned long)(x))

#define VSYSCALL_AUX_ENT                              \
      if (vdso_enabled)                         \
            NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE);
#else
#define VSYSCALL_AUX_ENT
#endif /* CONFIG_VSYSCALL */

#ifdef CONFIG_SH_FPU
#define FPU_AUX_ENT     NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT)
#else
#define FPU_AUX_ENT
#endif

extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;

/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
#define ARCH_DLINFO                                   \
do {                                            \
      /* Optional FPU initialization */               \
      FPU_AUX_ENT;                                    \
                                                \
      /* Optional vsyscall entry */                   \
      VSYSCALL_AUX_ENT;                         \
                                                \
      /* Cache desc */                          \
      NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape);      \
      NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape);      \
      NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape);        \
} while (0)

#endif /* __KERNEL__ */
#endif /* __ASM_SH_ELF_H */

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