gdb/config/rs6000/tm-rs6000.h

   1 /* Parameters for target execution on an RS6000, for GDB, the GNU debugger.
   2    Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
   3    1998, 1999, 2000
   4    Free Software Foundation, Inc.
   5    Contributed by IBM Corporation.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #define GDB_MULTI_ARCH 1
  25
  26 /* Minimum possible text address in AIX */
  27
  28 #define TEXT_SEGMENT_BASE       0x10000000
  29
  30 /* AIX's assembler doesn't grok dollar signs in identifiers.
  31    So we use dots instead.  This item must be coordinated with G++. */
  32 #undef CPLUS_MARKER
  33 #define CPLUS_MARKER '.'
  34
  35 /* Return whether PC in function NAME is in code that should be skipped when
  36    single-stepping.  */
  37
  38 #define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) \
  39   rs6000_in_solib_return_trampoline (pc, name)
  40 extern int rs6000_in_solib_return_trampoline (CORE_ADDR, char *);
  41
  42 /* If PC is in some function-call trampoline code, return the PC
  43    where the function itself actually starts.  If not, return NULL.  */
  44
  45 #define SKIP_TRAMPOLINE_CODE(pc)        rs6000_skip_trampoline_code (pc)
  46 extern CORE_ADDR rs6000_skip_trampoline_code (CORE_ADDR);
  47
  48 /* Number of trap signals we need to skip over, once the inferior process
  49    starts running. */
  50
  51 #define START_INFERIOR_TRAPS_EXPECTED   2
  52
  53 /* AIX has a couple of strange returns from wait().  */
  54
  55 #define CHILD_SPECIAL_WAITSTATUS(ourstatus, hoststatus) ( \
  56   /* "stop after load" status.  */ \
  57   (hoststatus) == 0x57c ? (ourstatus)->kind = TARGET_WAITKIND_LOADED, 1 : \
  58   \
  59   /* signal 0. I have no idea why wait(2) returns with this status word.  */ \
  60   /* It looks harmless. */ \
  61   (hoststatus) == 0x7f ? (ourstatus)->kind = TARGET_WAITKIND_SPURIOUS, 1 : \
  62   \
  63   /* A normal waitstatus.  Let the usual macros deal with it.  */ \
  64   0)
  65
  66 /* In xcoff, we cannot process line numbers when we see them. This is
  67    mainly because we don't know the boundaries of the include files. So,
  68    we postpone that, and then enter and sort(?) the whole line table at
  69    once, when we are closing the current symbol table in end_symtab(). */
  70
  71 #define PROCESS_LINENUMBER_HOOK()       aix_process_linenos ()
  72 extern void aix_process_linenos (void);
  73
  74 /* Register numbers of various important registers.
  75    Note that some of these values are "real" register numbers,
  76    and correspond to the general registers of the machine,
  77    and some are "phony" register numbers which are too large
  78    to be actual register numbers as far as the user is concerned
  79    but do serve to get the desired values when passed to read_register.  */
  80
  81 #define FP0_REGNUM 32           /* Floating point register 0 */
  82 #define FPLAST_REGNUM 63        /* Last floating point register */
  83
  84 /* Define other aspects of the stack frame.  */
  85
  86 #define INIT_FRAME_PC_FIRST(fromleaf, prev) \
  87   prev->pc = (fromleaf ? SAVED_PC_AFTER_CALL (prev->next) : \
  88               prev->next ? FRAME_SAVED_PC (prev->next) : read_pc ());
  89 #define INIT_FRAME_PC(fromleaf, prev)   /* nothing */
  90
  91 /* Flag for machine-specific stuff in shared files.  FIXME */
  92 #define IBM6000_TARGET
  93
  94 /* RS6000/AIX does not support PT_STEP.  Has to be simulated.  */
  95
  96 #define SOFTWARE_SINGLE_STEP_P() 1
  97 extern void rs6000_software_single_step (enum target_signal, int);
  98 #define SOFTWARE_SINGLE_STEP(sig,bp_p) rs6000_software_single_step (sig, bp_p)
  99
 100 /* Notice when a new child process is started. */
 101
 102 #define TARGET_CREATE_INFERIOR_HOOK rs6000_create_inferior
 103 extern void rs6000_create_inferior (int);
 104
 105 /* Hook in rs6000-tdep.c for determining the TOC address when
 106    calling functions in the inferior.  */
 107
 108 extern CORE_ADDR (*rs6000_find_toc_address_hook) (CORE_ADDR);
 109
 110 /* Hook in rs6000-tdep.c to set the current architecture when starting a
 111    child process. */
 112
 113 extern void (*rs6000_set_host_arch_hook) (int);
 114
 115 /* We need solib.h for building cross debuggers.  However, we don't want
 116    to clobber any special solib support required by native debuggers, so
 117    only include solib.h if SOLIB_ADD is not defined.  */
 118 #ifndef SOLIB_ADD
 119 #include "solib.h"
 120 #endif