mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-24 20:49:43 +00:00
f77a2124d6
* hppa-tdep.h (gdbarch_tdep): Add unwind_adjust_stub method.
* hppa-hpux-tdep.c (hppa_hpux_unwind_adjust_stub): New function.
(hppa_hpux_init_abi) Set unwind_adjust_stub method.
* hppa-tdep.c (hppa_frame_cache): Call unwind_adjust_stub method
if defined.
227 lines
8.4 KiB
C
227 lines
8.4 KiB
C
/* Common target dependent code for GDB on HPPA systems.
|
|
Copyright 2003, 2004 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
|
|
|
|
struct trad_frame_saved_reg;
|
|
|
|
/* Register numbers of various important registers.
|
|
Note that some of these values are "real" register numbers,
|
|
and correspond to the general registers of the machine,
|
|
and some are "phony" register numbers which are too large
|
|
to be actual register numbers as far as the user is concerned
|
|
but do serve to get the desired values when passed to read_register. */
|
|
|
|
enum hppa_regnum
|
|
{
|
|
HPPA_R0_REGNUM = 0, /* Doesn't actually exist, used as base for
|
|
other r registers. */
|
|
HPPA_R1_REGNUM = 1,
|
|
HPPA_FLAGS_REGNUM = 0, /* Various status flags */
|
|
HPPA_RP_REGNUM = 2, /* return pointer */
|
|
HPPA_FP_REGNUM = 3, /* The ABI's frame pointer, when used */
|
|
HPPA_SP_REGNUM = 30, /* Stack pointer. */
|
|
HPPA_R31_REGNUM = 31,
|
|
HPPA_SAR_REGNUM = 32, /* Shift Amount Register */
|
|
HPPA_IPSW_REGNUM = 41, /* Interrupt Processor Status Word */
|
|
HPPA_PCOQ_HEAD_REGNUM = 33, /* instruction offset queue head */
|
|
HPPA_PCSQ_HEAD_REGNUM = 34, /* instruction space queue head */
|
|
HPPA_PCOQ_TAIL_REGNUM = 35, /* instruction offset queue tail */
|
|
HPPA_PCSQ_TAIL_REGNUM = 36, /* instruction space queue tail */
|
|
HPPA_EIEM_REGNUM = 37, /* External Interrupt Enable Mask */
|
|
HPPA_IIR_REGNUM = 38, /* Interrupt Instruction Register */
|
|
HPPA_ISR_REGNUM = 39, /* Interrupt Space Register */
|
|
HPPA_IOR_REGNUM = 40, /* Interrupt Offset Register */
|
|
HPPA_SR4_REGNUM = 43, /* space register 4 */
|
|
HPPA_RCR_REGNUM = 51, /* Recover Counter (also known as cr0) */
|
|
HPPA_PID0_REGNUM = 52, /* Protection ID */
|
|
HPPA_PID1_REGNUM = 53, /* Protection ID */
|
|
HPPA_PID2_REGNUM = 55, /* Protection ID */
|
|
HPPA_PID3_REGNUM = 56, /* Protection ID */
|
|
HPPA_CCR_REGNUM = 54, /* Coprocessor Configuration Register */
|
|
HPPA_TR0_REGNUM = 57, /* Temporary Registers (cr24 -> cr31) */
|
|
HPPA_CR27_REGNUM = 60, /* Base register for thread-local storage, cr27 */
|
|
HPPA_FP0_REGNUM = 64, /* First floating-point. */
|
|
HPPA_FP4_REGNUM = 72,
|
|
|
|
HPPA_ARG0_REGNUM = 26, /* The first argument of a callee. */
|
|
HPPA_ARG1_REGNUM = 25, /* The second argument of a callee. */
|
|
HPPA_ARG2_REGNUM = 24, /* The third argument of a callee. */
|
|
HPPA_ARG3_REGNUM = 23 /* The fourth argument of a callee. */
|
|
};
|
|
|
|
/* 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;
|
|
|
|
/* Given a function address, try to find the global pointer for the
|
|
corresponding shared object. */
|
|
CORE_ADDR (*find_global_pointer) (struct value *);
|
|
|
|
/* For shared libraries, each call goes through a small piece of
|
|
trampoline code in the ".plt", or equivalent, section.
|
|
IN_SOLIB_CALL_TRAMPOLINE evaluates to nonzero if we are currently
|
|
stopped in one of these. */
|
|
int (*in_solib_call_trampoline) (CORE_ADDR pc, char *name);
|
|
|
|
/* For targets that support multiple spaces, we may have additional stubs
|
|
in the return path. These stubs are internal to the ABI, and users are
|
|
not interested in them. If we detect that we are returning to a stub,
|
|
adjust the pc to the real caller. This improves the behavior of commands
|
|
that traverse frames such as "up" and "finish". */
|
|
void (*unwind_adjust_stub) (struct frame_info *next_frame, CORE_ADDR base,
|
|
struct trad_frame_saved_reg *saved_regs);
|
|
|
|
};
|
|
|
|
/*
|
|
* 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);
|
|
CORE_ADDR hppa_symbol_address(const char *sym);
|
|
|
|
void
|
|
hppa_frame_prev_register_helper (struct frame_info *next_frame,
|
|
struct trad_frame_saved_reg *saved_regs,
|
|
int regnum, int *optimizedp,
|
|
enum lval_type *lvalp, CORE_ADDR *addrp,
|
|
int *realnump, void *valuep);
|
|
|
|
extern CORE_ADDR hppa_read_pc (ptid_t ptid);
|
|
extern void hppa_write_pc (CORE_ADDR pc, ptid_t ptid);
|
|
extern CORE_ADDR hppa_unwind_pc (struct gdbarch *gdbarch,
|
|
struct frame_info *next_frame);
|
|
|
|
#endif /* HPPA_TDEP_H */
|