/* Common target dependent code for GDB on Alpha systems.
- Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002 Free
- Software Foundation, Inc.
+ Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003, 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 ALPHA_TDEP_H
#define ALPHA_TDEP_H
+struct regcache;
+
/* Say how long (ordinary) registers are. This is a piece of bogosity
- used in push_word and a few other places; REGISTER_RAW_SIZE is the
+ used in push_word and a few other places; register_size() is the
real way to know how big a register is. */
#define ALPHA_REGISTER_SIZE 8
/* Number of machine registers. */
-#define ALPHA_NUM_REGS 66
+#define ALPHA_NUM_REGS 67
/* Total amount of space needed to store our copies of the machine's
register state. */
#define ALPHA_REGISTER_BYTES (ALPHA_NUM_REGS * 8)
-/* Largest value REGISTER_RAW_SIZE can have. */
-#define ALPHA_MAX_REGISTER_RAW_SIZE 8
-
-/* Largest value REGISTER_VIRTUAL_SIZE can have. */
-#define ALPHA_MAX_REGISTER_VIRTUAL_SIZE 8
-
-/* Register numbers of various important registers.
- Note that most of these values are "real" register numbers,
- and correspond to the general registers of the machine,
- and FP_REGNUM is a "phony" register number which is too large
- to be an actual register number as far as the user is concerned
- but serves to get the desired value when passed to read_register. */
+/* Register numbers of various important registers. Note that most of
+ these values are "real" register numbers, and correspond to the
+ general registers of the machine. */
#define ALPHA_V0_REGNUM 0 /* Function integer return value */
#define ALPHA_T7_REGNUM 8 /* Return address register for OSF/1 __add* */
+#define ALPHA_S0_REGNUM 9 /* First saved register */
#define ALPHA_GCC_FP_REGNUM 15 /* Used by gcc as frame register */
#define ALPHA_A0_REGNUM 16 /* Loc of first arg during a subr call */
#define ALPHA_T9_REGNUM 23 /* Return address register for OSF/1 __div* */
+#define ALPHA_RA_REGNUM 26 /* Contains return address value */
#define ALPHA_T12_REGNUM 27 /* Contains start addr of current proc */
+#define ALPHA_GP_REGNUM 29 /* Contains the global pointer */
#define ALPHA_SP_REGNUM 30 /* Contains address of top of stack */
-#define ALPHA_RA_REGNUM 26 /* Contains return address value */
#define ALPHA_ZERO_REGNUM 31 /* Read-only register, always 0 */
#define ALPHA_FP0_REGNUM 32 /* Floating point register 0 */
#define ALPHA_FPA0_REGNUM 48 /* First float arg during a subr call */
#define ALPHA_FPCR_REGNUM 63 /* Floating point control register */
#define ALPHA_PC_REGNUM 64 /* Contains program counter */
-#define ALPHA_FP_REGNUM 65 /* Virtual frame pointer */
+#define ALPHA_UNIQUE_REGNUM 66 /* PAL_rduniq value */
+
+/* Instruction size. */
+#define ALPHA_INSN_SIZE 4
/* The alpha has two different virtual pointers for arguments and locals.
pointer, the value of localoff is obtained from the PDR. */
#define ALPHA_NUM_ARG_REGS 6
-/* ABI variants that we know about. If you add to this enum, please
- update the table of names in alpha-tdep.c. */
-enum alpha_abi
-{
- ALPHA_ABI_UNKNOWN = 0,
- ALPHA_ABI_OSF1,
- ALPHA_ABI_LINUX,
- ALPHA_ABI_FREEBSD,
- ALPHA_ABI_NETBSD,
-
- ALPHA_ABI_INVALID /* Keep this last. */
-};
-
/* Target-dependent structure in gdbarch. */
struct gdbarch_tdep
{
- enum alpha_abi alpha_abi; /* OS/ABI of inferior. */
- const char *abi_name; /* Name of the above. */
-
- CORE_ADDR vm_min_address; /* used by heuristic_proc_start */
+ CORE_ADDR vm_min_address; /* Used by alpha_heuristic_proc_start. */
+
+ /* If PC is inside a dynamically-generated signal trampoline function
+ (i.e. one copied onto the user stack at run-time), return how many
+ bytes PC is beyond the start of that function. Otherwise, return -1. */
+ LONGEST (*dynamic_sigtramp_offset) (CORE_ADDR);
+
+ /* Translate a signal handler stack base address into the address of
+ the sigcontext structure for that signal handler. */
+ CORE_ADDR (*sigcontext_addr) (struct frame_info *);
+
+ /* Does the PC fall in a signal trampoline. */
+ /* NOTE: cagney/2004-04-30: Do not copy/clone this code. Instead
+ look at tramp-frame.h and other simplier per-architecture
+ sigtramp unwinders. */
+ int (*pc_in_sigtramp) (CORE_ADDR pc, char *name);
+
+ /* If TYPE will be returned in memory, return true. */
+ int (*return_in_memory) (struct type *type);
+
+ /* Offset of registers in `struct sigcontext'. */
+ int sc_pc_offset;
+ int sc_regs_offset;
+ int sc_fpregs_offset;
+
+ int jb_pc; /* Offset to PC value in jump buffer.
+ If htis is negative, longjmp support
+ will be disabled. */
+ size_t jb_elt_size; /* And the size of each entry in the buf. */
};
+extern unsigned int alpha_read_insn (CORE_ADDR pc);
+extern int alpha_software_single_step (struct regcache *regcache);
+extern CORE_ADDR alpha_after_prologue (CORE_ADDR pc);
+
+extern void alpha_mdebug_init_abi (struct gdbarch_info, struct gdbarch *);
+extern void alpha_dwarf2_init_abi (struct gdbarch_info, struct gdbarch *);
+
+extern void alpha_supply_int_regs (struct regcache *, int, const void *,
+ const void *, const void *);
+extern void alpha_fill_int_regs (const struct regcache *, int,
+ void *, void *, void *);
+extern void alpha_supply_fp_regs (struct regcache *, int,
+ const void *, const void *);
+extern void alpha_fill_fp_regs (const struct regcache *,
+ int, void *, void *);
+
#endif /* ALPHA_TDEP_H */
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