-/* Common target dependent code for GDB on HPPA systems.
- Copyright 2003 Free Software Foundation, Inc.
+/* Target-dependent code for the HP PA-RISC architecture.
+
+ Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#ifndef HPPA_TDEP_H
#define HPPA_TDEP_H
+struct trad_frame_saved_reg;
+struct objfile;
+struct so_list;
+
+/* Register numbers of various important registers. */
+
+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_DP_REGNUM = 27,
+ HPPA_RET0_REGNUM = 28,
+ HPPA_RET1_REGNUM = 29,
+ 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,
+ HPPA64_FP4_REGNUM = 68,
+ HPPA_FP31R_REGNUM = 127, /* Last floating-point. */
+
+ 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. */
+};
+
+/* Instruction size. */
+#define HPPA_INSN_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;
+
+ /* 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);
+
+ /* These are solib-dependent methods. They are really HPUX only, but
+ we don't have a HPUX-specific tdep vector at the moment. */
+ CORE_ADDR (*solib_thread_start_addr) (struct so_list *so);
+ CORE_ADDR (*solib_get_got_by_pc) (CORE_ADDR addr);
+ CORE_ADDR (*solib_get_solib_by_pc) (CORE_ADDR addr);
+ CORE_ADDR (*solib_get_text_base) (struct objfile *objfile);
};
-#endif /* HPPA_TDEP_H */
+/*
+ * 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 reserved: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 sr4export:1; /* 22 */
+ unsigned int cxx_info:1; /* 23 */
+ unsigned int cxx_try_catch:1; /* 24 */
+ unsigned int sched_entry_seq:1; /* 25 */
+ unsigned int reserved1:1; /* 26 */
+ unsigned int Save_SP:1; /* 27 */
+ unsigned int Save_RP:1; /* 28 */
+ unsigned int Save_MRP_in_frame:1; /* 29 */
+ unsigned int save_r19:1; /* 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 alloca_frame:1; /* 3 */
+ unsigned int reserved2:1; /* 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;
+
+ int dummy_call_sequence_reg;
+ CORE_ADDR dummy_call_sequence_addr;
+ };
+
+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);
+
+extern 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, gdb_byte *valuep);
+
+extern CORE_ADDR hppa_read_pc (struct regcache *regcache);
+extern void hppa_write_pc (struct regcache *regcache, CORE_ADDR pc);
+extern CORE_ADDR hppa_unwind_pc (struct gdbarch *gdbarch,
+ struct frame_info *next_frame);
+
+extern struct minimal_symbol *
+ hppa_lookup_stub_minimal_symbol (const char *name,
+ enum unwind_stub_types stub_type);
+
+extern struct hppa_objfile_private *
+hppa_init_objfile_priv_data (struct objfile *objfile);
+
+extern int hppa_in_solib_call_trampoline (CORE_ADDR pc, char *name);
+extern CORE_ADDR hppa_skip_trampoline_code (struct frame_info *, CORE_ADDR pc);
+
+#endif /* hppa-tdep.h */