Пример #1
0
static void
mips64_fbsd_sigframe_init (const struct tramp_frame *self,
			   struct frame_info *this_frame,
			   struct trad_frame_cache *cache,
			   CORE_ADDR func)
{
  struct gdbarch *gdbarch = get_frame_arch (this_frame);
  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
  CORE_ADDR sp, ucontext_addr, addr;
  int regnum;
  gdb_byte buf[4];

  /* We find the appropriate instance of `ucontext_t' at a
     fixed offset in the signal frame.  */
  sp = get_frame_register_signed (this_frame,
				  MIPS_SP_REGNUM + gdbarch_num_regs (gdbarch));
  ucontext_addr = sp + N64_SIGFRAME_UCONTEXT_OFFSET;

  /* PC.  */
  regnum = mips_regnum (gdbarch)->pc;
  trad_frame_set_reg_addr (cache,
			   regnum + gdbarch_num_regs (gdbarch),
			   ucontext_addr + N64_UCONTEXT_PC);

  /* GPRs.  */
  for (regnum = MIPS_ZERO_REGNUM, addr = ucontext_addr + N64_UCONTEXT_REGS;
       regnum <= MIPS_RA_REGNUM; regnum++, addr += N64_UCONTEXT_REG_SIZE)
    trad_frame_set_reg_addr (cache,
			     regnum + gdbarch_num_regs (gdbarch),
			     addr);

  regnum = MIPS_PS_REGNUM;
  trad_frame_set_reg_addr (cache,
			   regnum + gdbarch_num_regs (gdbarch),
			   ucontext_addr + N64_UCONTEXT_SR);

  /* HI and LO.  */
  regnum = mips_regnum (gdbarch)->lo;
  trad_frame_set_reg_addr (cache,
			   regnum + gdbarch_num_regs (gdbarch),
			   ucontext_addr + N64_UCONTEXT_LO);
  regnum = mips_regnum (gdbarch)->hi;
  trad_frame_set_reg_addr (cache,
			   regnum + gdbarch_num_regs (gdbarch),
			   ucontext_addr + N64_UCONTEXT_HI);

  if (target_read_memory (ucontext_addr + N64_UCONTEXT_FPUSED, buf, 4) == 0
      && extract_unsigned_integer (buf, 4, byte_order) != 0)
    {
      for (regnum = 0, addr = ucontext_addr + N64_UCONTEXT_FPREGS;
	   regnum < 32; regnum++, addr += N64_UCONTEXT_REG_SIZE)
	trad_frame_set_reg_addr (cache,
				 regnum + gdbarch_fp0_regnum (gdbarch),
				 addr);
      trad_frame_set_reg_addr (cache, mips_regnum (gdbarch)->fp_control_status,
			       addr);
    }

  trad_frame_set_id (cache, frame_id_build (sp, func));
}
Пример #2
0
static void
mips64obsd_sigframe_init (const struct tramp_frame *self,
			  struct frame_info *this_frame,
			  struct trad_frame_cache *cache,
			  CORE_ADDR func)
{
  struct gdbarch *gdbarch = get_frame_arch (this_frame);
  CORE_ADDR sp, sigcontext_addr, addr;
  int regnum;

  /* We find the appropriate instance of `struct sigcontext' at a
     fixed offset in the signal frame.  */
  sp = get_frame_register_signed (this_frame,
				  MIPS_SP_REGNUM + gdbarch_num_regs (gdbarch));
  sigcontext_addr = sp + 32;

  /* PC.  */
  regnum = mips_regnum (gdbarch)->pc;
  trad_frame_set_reg_addr (cache,
			   regnum + gdbarch_num_regs (gdbarch),
			    sigcontext_addr + 16);

  /* GPRs.  */
  for (regnum = MIPS_AT_REGNUM, addr = sigcontext_addr + 32;
       regnum <= MIPS_RA_REGNUM; regnum++, addr += 8)
    trad_frame_set_reg_addr (cache,
			     regnum + gdbarch_num_regs (gdbarch),
			     addr);

  /* HI and LO.  */
  regnum = mips_regnum (gdbarch)->lo;
  trad_frame_set_reg_addr (cache,
			   regnum + gdbarch_num_regs (gdbarch),
			   sigcontext_addr + 280);
  regnum = mips_regnum (gdbarch)->hi;
  trad_frame_set_reg_addr (cache,
			   regnum + gdbarch_num_regs (gdbarch),
			   sigcontext_addr + 288);

  /* TODO: Handle the floating-point registers.  */

  trad_frame_set_id (cache, frame_id_build (sp, func));
}
/* Implement the "init" routine in struct tramp_frame for the N32 ABI
   on mips-irix.  */
static void
mips_irix_n32_tramp_frame_init (const struct tramp_frame *self,
				struct frame_info *this_frame,
				struct trad_frame_cache *this_cache,
				CORE_ADDR func)
{
  struct gdbarch *gdbarch = get_frame_arch (this_frame);
  const int num_regs = gdbarch_num_regs (gdbarch);
  int sp_cooked_regno = num_regs + MIPS_SP_REGNUM;
  const CORE_ADDR sp = get_frame_register_signed (this_frame, sp_cooked_regno);
  const CORE_ADDR sigcontext_base = sp + 48;
  const struct mips_regnum *regs = mips_regnum (gdbarch);
  int ireg;

  trad_frame_set_reg_addr (this_cache, regs->pc + gdbarch_num_regs (gdbarch),
                           sigcontext_base + SIGCONTEXT_PC_OFF);

  for (ireg = 1; ireg < 32; ireg++)
    trad_frame_set_reg_addr (this_cache, ireg + MIPS_ZERO_REGNUM + num_regs,
                             sigcontext_base + SIGCONTEXT_REGS_OFF + ireg * 8);

  for (ireg = 0; ireg < 32; ireg++)
    trad_frame_set_reg_addr (this_cache, ireg + regs->fp0 + num_regs,
                             sigcontext_base + SIGCONTEXT_FPREGS_OFF
                               + ireg * 8);

  trad_frame_set_reg_addr (this_cache, regs->fp_control_status + num_regs,
                           sigcontext_base + SIGCONTEXT_FPCSR_OFF);

  trad_frame_set_reg_addr (this_cache, regs->hi + num_regs,
                           sigcontext_base + SIGCONTEXT_HI_OFF);

  trad_frame_set_reg_addr (this_cache, regs->lo + num_regs,
                           sigcontext_base + SIGCONTEXT_LO_OFF);

  trad_frame_set_id (this_cache, frame_id_build (sigcontext_base, func));
}
Пример #4
0
static void
armobsd_sigframe_init (const struct tramp_frame *self,
		       struct frame_info *this_frame,
		       struct trad_frame_cache *cache,
		       CORE_ADDR func)
{
  CORE_ADDR sp, sigcontext_addr, addr;
  int regnum;

  /* We find the appropriate instance of `struct sigcontext' at a
     fixed offset in the signal frame.  */
  sp = get_frame_register_signed (this_frame, ARM_SP_REGNUM);
  sigcontext_addr = sp + 16;

  /* PC.  */
  trad_frame_set_reg_addr (cache, ARM_PC_REGNUM, sigcontext_addr + 76);

  /* GPRs.  */
  for (regnum = ARM_A1_REGNUM, addr = sigcontext_addr + 12;
       regnum <= ARM_LR_REGNUM; regnum++, addr += 4)
    trad_frame_set_reg_addr (cache, regnum, addr);

  trad_frame_set_id (cache, frame_id_build (sp, func));
}
Пример #5
0
static struct trad_frame_cache *
mips_sde_frame_cache (struct frame_info *this_frame, void **this_cache)
{
  struct gdbarch *gdbarch = get_frame_arch (this_frame);
  const struct mips_regnum *regs = mips_regnum (gdbarch);
  const int sizeof_reg_t = mips_abi_regsize (gdbarch);
  enum mips_abi abi = mips_abi (gdbarch);
  struct trad_frame_cache *cache;
  CORE_ADDR xcpt_frame;
  CORE_ADDR start_addr;
  CORE_ADDR stack_addr;
  CORE_ADDR pc;
  int i;

  if (*this_cache != NULL)
    return (struct trad_frame_cache *) *this_cache;
  cache = trad_frame_cache_zalloc (this_frame);
  *this_cache = cache;

  /* The previous registers are held in struct xcptcontext
     which is at $sp+offs

     struct xcptcontext {
       reg_t	sr;		CP0 Status
       reg_t	cr;		CP0 Cause
       reg_t	epc;		CP0 EPC
       reg_t	vaddr;		CP0 BadVAddr
       reg_t	regs[32];	General registers
       reg_t	mdlo;		LO
       reg_t	mdhi;		HI
       reg_t	mdex;		ACX
       ...
     };
  */

  stack_addr = get_frame_register_signed (this_frame,
					  gdbarch_sp_regnum (gdbarch));
  switch (abi)
    {
    case MIPS_ABI_O32:
      /* 40: XCPTCONTEXT
	 24: xcpt_gen() argspace		(16 bytes)
	 16: _xcptcall() saved ra, rounded up	( 8 bytes)
	 00: _xcptcall() argspace 		(16 bytes)  */
      xcpt_frame = stack_addr + 40;
      break;
    case MIPS_ABI_N32:
    case MIPS_ABI_N64:
    default:			/* Wild guess.  */
      /* 16: XCPTCONTEXT
	 16: xcpt_gen() argspace 		( 0 bytes)
	 00: _xcptcall() saved ra, rounded up	(16 bytes)  */
      xcpt_frame = stack_addr + 16;
      break;
    }

  trad_frame_set_reg_addr (cache,
			   MIPS_PS_REGNUM + gdbarch_num_regs (gdbarch),
			   xcpt_frame + 0 * sizeof_reg_t);
  trad_frame_set_reg_addr (cache,
			   regs->cause + gdbarch_num_regs (gdbarch),
			   xcpt_frame + 1 * sizeof_reg_t);
  trad_frame_set_reg_addr (cache,
			   regs->pc + gdbarch_num_regs (gdbarch),
			   xcpt_frame + 2 * sizeof_reg_t);
  trad_frame_set_reg_addr (cache,
			   regs->badvaddr + gdbarch_num_regs (gdbarch),
			   xcpt_frame + 3 * sizeof_reg_t);
  for (i = 0; i < MIPS_NUMREGS; i++)
    trad_frame_set_reg_addr (cache,
			     i + MIPS_ZERO_REGNUM + gdbarch_num_regs (gdbarch),
			     xcpt_frame + (4 + i) * sizeof_reg_t);
  trad_frame_set_reg_addr (cache,
			   regs->lo + gdbarch_num_regs (gdbarch),
			   xcpt_frame + 36 * sizeof_reg_t);
  trad_frame_set_reg_addr (cache,
			   regs->hi + gdbarch_num_regs (gdbarch),
			   xcpt_frame + 37 * sizeof_reg_t);

  pc = get_frame_pc (this_frame);
  find_pc_partial_function (pc, NULL, &start_addr, NULL);
  trad_frame_set_id (cache, frame_id_build (start_addr, stack_addr));

  return cache;
}