arch/cris/include/arch-v10/arch/elf.h

   1 #ifndef __ASMCRIS_ARCH_ELF_H
   2 #define __ASMCRIS_ARCH_ELF_H
   3
   4 #include <arch/system.h>
   5
   6 #define ELF_MACH EF_CRIS_VARIANT_ANY_V0_V10
   7
   8 /*
   9  * This is used to ensure we don't load something for the wrong architecture.
  10  */
  11 #define elf_check_arch(x)                       \
  12  ((x)->e_machine == EM_CRIS                     \
  13   && ((((x)->e_flags & EF_CRIS_VARIANT_MASK) == EF_CRIS_VARIANT_ANY_V0_V10      \
  14       || (((x)->e_flags & EF_CRIS_VARIANT_MASK) == EF_CRIS_VARIANT_COMMON_V10_V32))))
  15
  16 /*
  17  * ELF register definitions..
  18  */
  19
  20 #include <asm/ptrace.h>
  21
  22 /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
  23    starts (a register; assume first param register for CRIS)
  24    contains a pointer to a function which might be
  25    registered using `atexit'.  This provides a mean for the
  26    dynamic linker to call DT_FINI functions for shared libraries
  27    that have been loaded before the code runs.
  28
  29    A value of 0 tells we have no such handler.  */
  30
  31 /* Explicitly set registers to 0 to increase determinism.  */
  32 #define ELF_PLAT_INIT(_r, load_addr)    do { \
  33         (_r)->r13 = 0; (_r)->r12 = 0; (_r)->r11 = 0; (_r)->r10 = 0; \
  34         (_r)->r9 = 0;  (_r)->r8 = 0;  (_r)->r7 = 0;  (_r)->r6 = 0;  \
  35         (_r)->r5 = 0;  (_r)->r4 = 0;  (_r)->r3 = 0;  (_r)->r2 = 0;  \
  36         (_r)->r1 = 0;  (_r)->r0 = 0;  (_r)->mof = 0; (_r)->srp = 0; \
  37 } while (0)
  38
  39 /* The additional layer below is because the stack pointer is missing in
  40    the pt_regs struct, but needed in a core dump. pr_reg is a elf_gregset_t,
  41    and should be filled in according to the layout of the user_regs_struct
  42    struct; regs is a pt_regs struct. We dump all registers, though several are
  43    obviously unnecessary. That way there's less need for intelligence at
  44    the receiving end (i.e. gdb). */
  45 #define ELF_CORE_COPY_REGS(pr_reg, regs)                   \
  46         pr_reg[0] = regs->r0;                              \
  47         pr_reg[1] = regs->r1;                              \
  48         pr_reg[2] = regs->r2;                              \
  49         pr_reg[3] = regs->r3;                              \
  50         pr_reg[4] = regs->r4;                              \
  51         pr_reg[5] = regs->r5;                              \
  52         pr_reg[6] = regs->r6;                              \
  53         pr_reg[7] = regs->r7;                              \
  54         pr_reg[8] = regs->r8;                              \
  55         pr_reg[9] = regs->r9;                              \
  56         pr_reg[10] = regs->r10;                            \
  57         pr_reg[11] = regs->r11;                            \
  58         pr_reg[12] = regs->r12;                            \
  59         pr_reg[13] = regs->r13;                            \
  60         pr_reg[14] = rdusp();               /* sp */       \
  61         pr_reg[15] = regs->irp;             /* pc */       \
  62         pr_reg[16] = 0;                     /* p0 */       \
  63         pr_reg[17] = rdvr();                /* vr */       \
  64         pr_reg[18] = 0;                     /* p2 */       \
  65         pr_reg[19] = 0;                     /* p3 */       \
  66         pr_reg[20] = 0;                     /* p4 */       \
  67         pr_reg[21] = (regs->dccr & 0xffff); /* ccr */      \
  68         pr_reg[22] = 0;                     /* p6 */       \
  69         pr_reg[23] = regs->mof;             /* mof */      \
  70         pr_reg[24] = 0;                     /* p8 */       \
  71         pr_reg[25] = 0;                     /* ibr */      \
  72         pr_reg[26] = 0;                     /* irp */      \
  73         pr_reg[27] = regs->srp;             /* srp */      \
  74         pr_reg[28] = 0;                     /* bar */      \
  75         pr_reg[29] = regs->dccr;            /* dccr */     \
  76         pr_reg[30] = 0;                     /* brp */      \
  77         pr_reg[31] = rdusp();               /* usp */      \
  78         pr_reg[32] = 0;                     /* csrinstr */ \
  79         pr_reg[33] = 0;                     /* csraddr */  \
  80         pr_reg[34] = 0;                     /* csrdata */
  81
  82
  83 #endif