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/* Common target dependent code for GDB on HPPA systems.
Copyright 2003 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef HPPA_TDEP_H
#define HPPA_TDEP_H
enum { HPPA_INSTRUCTION_SIZE = 4 };
/* Target-dependent structure in gdbarch. */
struct gdbarch_tdep
{
/* The number of bytes in an address. For now, this field is designed
to allow us to differentiate hppa32 from hppa64 targets. */
int bytes_per_address;
/* Is this an ELF target? This can be 64-bit HP-UX, or a 32/64-bit GNU/Linux
system. */
int is_elf;
};
/*
* Unwind table and descriptor.
*/
struct unwind_table_entry
{
CORE_ADDR region_start;
CORE_ADDR region_end;
unsigned int Cannot_unwind:1; /* 0 */
unsigned int Millicode:1; /* 1 */
unsigned int Millicode_save_sr0:1; /* 2 */
unsigned int Region_description:2; /* 3..4 */
unsigned int reserved1:1; /* 5 */
unsigned int Entry_SR:1; /* 6 */
unsigned int Entry_FR:4; /* number saved *//* 7..10 */
unsigned int Entry_GR:5; /* number saved *//* 11..15 */
unsigned int Args_stored:1; /* 16 */
unsigned int Variable_Frame:1; /* 17 */
unsigned int Separate_Package_Body:1; /* 18 */
unsigned int Frame_Extension_Millicode:1; /* 19 */
unsigned int Stack_Overflow_Check:1; /* 20 */
unsigned int Two_Instruction_SP_Increment:1; /* 21 */
unsigned int Ada_Region:1; /* 22 */
unsigned int cxx_info:1; /* 23 */
unsigned int cxx_try_catch:1; /* 24 */
unsigned int sched_entry_seq:1; /* 25 */
unsigned int reserved2:1; /* 26 */
unsigned int Save_SP:1; /* 27 */
unsigned int Save_RP:1; /* 28 */
unsigned int Save_MRP_in_frame:1; /* 29 */
unsigned int extn_ptr_defined:1; /* 30 */
unsigned int Cleanup_defined:1; /* 31 */
unsigned int MPE_XL_interrupt_marker:1; /* 0 */
unsigned int HP_UX_interrupt_marker:1; /* 1 */
unsigned int Large_frame:1; /* 2 */
unsigned int Pseudo_SP_Set:1; /* 3 */
unsigned int reserved4:1; /* 4 */
unsigned int Total_frame_size:27; /* 5..31 */
/* This is *NOT* part of an actual unwind_descriptor in an object
file. It is *ONLY* part of the "internalized" descriptors that
we create from those in a file.
*/
struct
{
unsigned int stub_type:4; /* 0..3 */
unsigned int padding:28; /* 4..31 */
}
stub_unwind;
};
/* HP linkers also generate unwinds for various linker-generated stubs.
GDB reads in the stubs from the $UNWIND_END$ subspace, then
"converts" them into normal unwind entries using some of the reserved
fields to store the stub type. */
/* The gaps represent linker stubs used in MPE and space for future
expansion. */
enum unwind_stub_types
{
LONG_BRANCH = 1,
PARAMETER_RELOCATION = 2,
EXPORT = 10,
IMPORT = 11,
IMPORT_SHLIB = 12,
};
struct unwind_table_entry *find_unwind_entry (CORE_ADDR);
/* We use the objfile->obj_private pointer for two things:
* 1. An unwind table;
*
* 2. A pointer to any associated shared library object.
*
* #defines are used to help refer to these objects.
*/
/* Info about the unwind table associated with an object file.
* This is hung off of the "objfile->obj_private" pointer, and
* is allocated in the objfile's psymbol obstack. This allows
* us to have unique unwind info for each executable and shared
* library that we are debugging.
*/
struct hppa_unwind_info
{
struct unwind_table_entry *table; /* Pointer to unwind info */
struct unwind_table_entry *cache; /* Pointer to last entry we found */
int last; /* Index of last entry */
};
struct hppa_objfile_private
{
struct hppa_unwind_info *unwind_info; /* a pointer */
struct so_list *so_info; /* a pointer */
CORE_ADDR dp;
};
extern const struct objfile_data *hppa_objfile_priv_data;
int hppa_get_field (unsigned word, int from, int to);
int hppa_extract_5_load (unsigned int);
unsigned hppa_extract_5R_store (unsigned int);
unsigned hppa_extract_5r_store (unsigned int);
int hppa_extract_17 (unsigned int);
int hppa_extract_21 (unsigned);
int hppa_extract_14 (unsigned);
int hppa_low_sign_extend (unsigned int, unsigned int);
int hppa_sign_extend (unsigned int, unsigned int);
#endif /* HPPA_TDEP_H */
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