Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-/* Offset from address of function to start of its code.
- Zero on most machines. */
-
-#define FUNCTION_START_OFFSET 2
-
-extern CORE_ADDR vax_skip_prologue (CORE_ADDR);
-#define SKIP_PROLOGUE(pc) (vax_skip_prologue (pc))
-
-#define SAVED_PC_AFTER_CALL(frame) vax_saved_pc_after_call ((frame))
-extern CORE_ADDR vax_saved_pc_after_call (struct frame_info *);
+#define GDB_MULTI_ARCH GDB_MULTI_ARCH_PARTIAL
#define TARGET_UPAGES 14
#define TARGET_NBPG 512
#define SIGTRAMP_START(pc) STACK_END_ADDR
#define SIGTRAMP_END(pc) 0x80000000
-/* Stack grows downward. */
-
-#define INNER_THAN(lhs,rhs) core_addr_lessthan ((lhs), (rhs))
-
/* Sequence of bytes for breakpoint instruction. */
-
#define BREAKPOINT {3}
-/* Amount PC must be decremented by after a breakpoint.
- This is often the number of bytes in BREAKPOINT
- but not always. */
-
-#define DECR_PC_AFTER_BREAK 0
-
-/* 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
- real way to know how big a register is. */
-
-#define REGISTER_SIZE 4
-
-/* Number of machine registers */
-
-#define NUM_REGS 17
-
-/* Return the name of the register specified by N. */
-#define REGISTER_NAME(N) vax_register_name ((N))
-extern char *vax_register_name (int);
-
-/* 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. */
-
-#define AP_REGNUM 12
-#define FP_REGNUM 13 /* Contains address of executing stack frame */
-#define SP_REGNUM 14 /* Contains address of top of stack */
-#define PC_REGNUM 15 /* Contains program counter */
-#define PS_REGNUM 16 /* Contains processor status */
-
-/* Total amount of space needed to store our copies of the machine's
- register state, the array `registers'. */
-#define REGISTER_BYTES (17*4)
-
-/* Index within `registers' of the first byte of the space for
- register N. */
-#define REGISTER_BYTE(N) vax_register_byte ((N))
-extern int vax_register_byte (int);
-
-/* Number of bytes of storage in the actual machine representation
- for register N. On the vax, all regs are 4 bytes. */
-#define REGISTER_RAW_SIZE(N) vax_register_raw_size ((N))
-extern int vax_register_raw_size (int);
-
-/* Number of bytes of storage in the program's representation
- for register N. On the vax, all regs are 4 bytes. */
-#define REGISTER_VIRTUAL_SIZE(N) vax_register_virtual_size ((N))
-extern int vax_register_virtual_size (int);
-
-/* Largest value REGISTER_RAW_SIZE can have. */
-
-#define MAX_REGISTER_RAW_SIZE 4
-
-/* Largest value REGISTER_VIRTUAL_SIZE can have. */
-
-#define MAX_REGISTER_VIRTUAL_SIZE 4
-
-/* Return the GDB type object for the "standard" data type
- of data in register N. */
-#define REGISTER_VIRTUAL_TYPE(N) vax_register_virtual_type ((N))
-extern struct type *vax_register_virtual_type (int);
-
-#define STORE_STRUCT_RETURN(ADDR, SP) vax_store_struct_return ((ADDR), (SP))
-extern void vax_store_struct_return (CORE_ADDR, CORE_ADDR);
-
-#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- vax_extract_return_value ((TYPE), (REGBUF), (VALBUF))
-extern void vax_extract_return_value (struct type *, char *, char *);
-
-#define STORE_RETURN_VALUE(TYPE,VALBUF) \
- vax_store_return_value ((TYPE), (VALBUF))
-extern void vax_store_return_value (struct type *, char *);
-
-#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
- vax_extract_struct_value_address ((REGBUF))
-extern CORE_ADDR vax_extract_struct_value_address (char *);
-\f
-
-#define FRAME_CHAIN(FI) vax_frame_chain ((FI))
-extern CORE_ADDR vax_frame_chain (struct frame_info *);
-
-#define FRAMELESS_FUNCTION_INVOCATION(FI) \
- generic_frameless_function_invocation_not ((FI))
+#define AP_REGNUM 12 /* XXXJRT */
/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
/* XXXJRT should go away */
#define SIGCONTEXT_PC_OFFSET 12
-#define FRAME_SAVED_PC(FRAME) vax_frame_saved_pc ((FRAME))
-extern CORE_ADDR vax_frame_saved_pc (struct frame_info *);
-
/* XXXJRT not yet under gdbarch control */
-#define FRAME_ARGS_ADDRESS_CORRECT(fi) vax_frame_args_address ((fi))
-extern CORE_ADDR vax_frame_args_address (struct frame_info *);
-
-#define FRAME_ARGS_ADDRESS(fi) vax_frame_args_address ((fi))
-extern CORE_ADDR vax_frame_args_address (struct frame_info *);
-
-#define FRAME_LOCALS_ADDRESS(fi) vax_frame_locals_address ((fi))
-extern CORE_ADDR vax_frame_locals_address (struct frame_info *);
-
-extern int vax_frame_num_args (struct frame_info *fi);
-#define FRAME_NUM_ARGS(fi) (vax_frame_num_args ((fi)))
-
-/* Return number of bytes at start of arglist that are not really args. */
-
-#define FRAME_ARGS_SKIP 4
-
-#define FRAME_INIT_SAVED_REGS(fi) vax_frame_init_saved_regs ((fi))
-extern void vax_frame_init_saved_regs (struct frame_info *);
-\f
-#define PUSH_DUMMY_FRAME vax_push_dummy_frame()
-extern void vax_push_dummy_frame (void);
-
-#define POP_FRAME vax_pop_frame()
-extern void vax_pop_frame (void);
-
-#define CALL_DUMMY_WORDS vax_call_dummy_words
-extern LONGEST vax_call_dummy_words[];
-
-#define SIZEOF_CALL_DUMMY_WORDS sizeof_vax_call_dummy_words
-extern int sizeof_vax_call_dummy_words;
-
-struct value;
-#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
- vax_fix_call_dummy ((dummyname), (pc), (fun), (nargs), (args), (type), \
- (gcc_p))
-extern void vax_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, int,
- struct value **, struct type *, int);
-
-#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
-
-#define CALL_DUMMY_BREAKPOINT_OFFSET 7
+#define FRAME_ARGS_ADDRESS_CORRECT(fi) vax_frame_args_address_correct ((fi))
+extern CORE_ADDR vax_frame_args_address_correct (struct frame_info *);
/* If vax pcc says CHAR or SHORT, it provides the correct address. */
-
#define BELIEVE_PCC_PROMOTION 1
#include "symtab.h"
#include "opcode/vax.h"
#include "gdbcore.h"
+#include "inferior.h"
#include "regcache.h"
#include "frame.h"
#include "value.h"
+#include "arch-utils.h"
+
+#include "vax-tdep.h"
+
+static gdbarch_register_name_ftype vax_register_name;
+static gdbarch_register_byte_ftype vax_register_byte;
+static gdbarch_register_raw_size_ftype vax_register_raw_size;
+static gdbarch_register_virtual_size_ftype vax_register_virtual_size;
+static gdbarch_register_virtual_type_ftype vax_register_virtual_type;
+
+static gdbarch_skip_prologue_ftype vax_skip_prologue;
+static gdbarch_saved_pc_after_call_ftype vax_saved_pc_after_call;
+static gdbarch_frame_num_args_ftype vax_frame_num_args;
+static gdbarch_frame_chain_ftype vax_frame_chain;
+static gdbarch_frame_saved_pc_ftype vax_frame_saved_pc;
+static gdbarch_frame_args_address_ftype vax_frame_args_address;
+static gdbarch_frame_locals_address_ftype vax_frame_locals_address;
+static gdbarch_frame_init_saved_regs_ftype vax_frame_init_saved_regs;
+static gdbarch_get_saved_register_ftype vax_get_saved_register;
+
+static gdbarch_store_struct_return_ftype vax_store_struct_return;
+static gdbarch_extract_return_value_ftype vax_extract_return_value;
+static gdbarch_store_return_value_ftype vax_store_return_value;
+static gdbarch_extract_struct_value_address_ftype
+ vax_extract_struct_value_address;
+
+static gdbarch_push_dummy_frame_ftype vax_push_dummy_frame;
+static gdbarch_pop_frame_ftype vax_pop_frame;
+static gdbarch_fix_call_dummy_ftype vax_fix_call_dummy;
/* Return 1 if P points to an invalid floating point value.
LEN is the length in bytes -- not relevant on the Vax. */
static unsigned char *print_insn_arg ();
\f
-char *
+static char *
vax_register_name (int regno)
{
static char *register_names[] =
return (register_names[regno]);
}
-int
+static int
vax_register_byte (int regno)
{
return (regno * 4);
}
-int
+static int
vax_register_raw_size (int regno)
{
return (4);
}
-int
+static int
vax_register_virtual_size (int regno)
{
return (4);
}
-struct type *
+static struct type *
vax_register_virtual_type (int regno)
{
return (builtin_type_int);
}
\f
-void
+static void
+vax_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp,
+ struct frame_info *frame, int regnum,
+ enum lval_type *lval)
+{
+ CORE_ADDR addr;
+
+ if (!target_has_registers)
+ error ("No registers.");
+
+ /* Normal systems don't optimize out things with register numbers. */
+ if (optimized != NULL)
+ *optimized = 0;
+ addr = find_saved_register (frame, regnum);
+ if (addr != 0)
+ {
+ if (lval != NULL)
+ *lval = lval_memory;
+ if (regnum == SP_REGNUM)
+ {
+ if (raw_buffer != NULL)
+ {
+ /* Put it back in target format. */
+ store_address (raw_buffer, REGISTER_RAW_SIZE (regnum),
+ (LONGEST) addr);
+ }
+ if (addrp != NULL)
+ *addrp = 0;
+ return;
+ }
+ if (raw_buffer != NULL)
+ target_read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
+ }
+ else
+ {
+ if (lval != NULL)
+ *lval = lval_register;
+ addr = REGISTER_BYTE (regnum);
+ if (raw_buffer != NULL)
+ read_register_gen (regnum, raw_buffer);
+ }
+ if (addrp != NULL)
+ *addrp = addr;
+}
+
+static void
vax_frame_init_saved_regs (struct frame_info *frame)
{
int regnum, regmask;
frame->saved_regs[PS_REGNUM] = frame->frame + 4;
}
-CORE_ADDR
+static CORE_ADDR
vax_frame_saved_pc (struct frame_info *frame)
{
if (frame->signal_handler_caller)
return (0);
}
-CORE_ADDR
+static CORE_ADDR
vax_frame_args_address (struct frame_info *frame)
{
/* In most of GDB, getting the args address is too important to
return (read_register (AP_REGNUM));
}
-CORE_ADDR
+static CORE_ADDR
vax_frame_locals_address (struct frame_info *frame)
{
return (frame->frame);
}
-int
+static int
vax_frame_num_args (struct frame_info *fi)
{
return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
}
-CORE_ADDR
+static CORE_ADDR
vax_frame_chain (struct frame_info *frame)
{
/* In the case of the VAX, the frame's nominal address is the FP value,
return (read_memory_integer (frame->frame + 12, 4));
}
\f
-void
+static void
vax_push_dummy_frame (void)
{
CORE_ADDR sp = read_register (SP_REGNUM);
write_register (AP_REGNUM, sp + (17 * 4));
}
-void
+static void
vax_pop_frame (void)
{
CORE_ADDR fp = read_register (FP_REGNUM);
It is 8 bytes long. The address and argc are patched by
vax_fix_call_dummy(). */
-LONGEST vax_call_dummy_words[] = { 0x329f69fb, 0x03323232 };
-int sizeof_vax_call_dummy_words = sizeof(vax_call_dummy_words);
+static LONGEST vax_call_dummy_words[] = { 0x329f69fb, 0x03323232 };
+static int sizeof_vax_call_dummy_words = sizeof(vax_call_dummy_words);
-void
+static void
vax_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
struct value **args, struct type *type, int gcc_p)
{
store_unsigned_integer (dummy + 3, 4, fun);
}
\f
-void
+static void
vax_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
write_register (1, addr);
}
-void
+static void
vax_extract_return_value (struct type *valtype, char *regbuf, char *valbuf)
{
memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (valtype));
}
-void
+static void
vax_store_return_value (struct type *valtype, char *valbuf)
{
write_register_bytes (0, valbuf, TYPE_LENGTH (valtype));
}
-CORE_ADDR
+static CORE_ADDR
vax_extract_struct_value_address (char *regbuf)
{
return (extract_address (regbuf + REGISTER_BYTE (0), REGISTER_RAW_SIZE (0)));
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
-CORE_ADDR
+static CORE_ADDR
vax_skip_prologue (CORE_ADDR pc)
{
register int op = (unsigned char) read_memory_integer (pc, 1);
return pc;
}
-CORE_ADDR
+static CORE_ADDR
vax_saved_pc_after_call (struct frame_info *frame)
{
return (FRAME_SAVED_PC(frame));
}
return p - buffer;
}
-
+\f
static unsigned char *
print_insn_arg (char *d, register char *p, CORE_ADDR addr,
disassemble_info *info)
return (unsigned char *) p;
}
+\f
+/* Initialize the current architecture based on INFO. If possible, re-use an
+ architecture from ARCHES, which is a list of architectures already created
+ during this debugging session.
+
+ Called e.g. at program startup, when reading a core file, and when reading
+ a binary file. */
+
+static struct gdbarch *
+vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+{
+ struct gdbarch *gdbarch;
+
+ /* Right now there is only one VAX architecture variant. */
+ if (arches != NULL)
+ return (arches->gdbarch);
+
+ gdbarch = gdbarch_alloc (&info, NULL);
+
+ /* Register info */
+ set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS);
+ set_gdbarch_sp_regnum (gdbarch, VAX_SP_REGNUM);
+ set_gdbarch_fp_regnum (gdbarch, VAX_FP_REGNUM);
+ set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM);
+ set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM);
+
+ set_gdbarch_register_name (gdbarch, vax_register_name);
+ set_gdbarch_register_size (gdbarch, VAX_REGISTER_SIZE);
+ set_gdbarch_register_bytes (gdbarch, VAX_REGISTER_BYTES);
+ set_gdbarch_register_byte (gdbarch, vax_register_byte);
+ set_gdbarch_register_raw_size (gdbarch, vax_register_raw_size);
+ set_gdbarch_max_register_raw_size (gdbarch, VAX_MAX_REGISTER_RAW_SIZE);
+ set_gdbarch_register_virtual_size (gdbarch, vax_register_virtual_size);
+ set_gdbarch_max_register_virtual_size (gdbarch,
+ VAX_MAX_REGISTER_VIRTUAL_SIZE);
+ set_gdbarch_register_virtual_type (gdbarch, vax_register_virtual_type);
+
+ /* Frame and stack info */
+ set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue);
+ set_gdbarch_saved_pc_after_call (gdbarch, vax_saved_pc_after_call);
+
+ set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args);
+ set_gdbarch_frameless_function_invocation (gdbarch,
+ generic_frameless_function_invocation_not);
+
+ set_gdbarch_frame_chain (gdbarch, vax_frame_chain);
+ set_gdbarch_frame_chain_valid (gdbarch, func_frame_chain_valid);
+ set_gdbarch_frame_saved_pc (gdbarch, vax_frame_saved_pc);
+
+ set_gdbarch_frame_args_address (gdbarch, vax_frame_args_address);
+ set_gdbarch_frame_locals_address (gdbarch, vax_frame_locals_address);
+
+ set_gdbarch_frame_init_saved_regs (gdbarch, vax_frame_init_saved_regs);
+
+ set_gdbarch_frame_args_skip (gdbarch, 4);
+
+ set_gdbarch_get_saved_register (gdbarch, vax_get_saved_register);
+
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+
+ /* Return value info */
+ set_gdbarch_store_struct_return (gdbarch, vax_store_struct_return);
+ set_gdbarch_extract_return_value (gdbarch, vax_extract_return_value);
+ set_gdbarch_store_return_value (gdbarch, vax_store_return_value);
+ set_gdbarch_extract_struct_value_address (gdbarch,
+ vax_extract_struct_value_address);
+
+ /* Call dummy info */
+ set_gdbarch_push_dummy_frame (gdbarch, vax_push_dummy_frame);
+ set_gdbarch_pop_frame (gdbarch, vax_pop_frame);
+ set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
+ set_gdbarch_call_dummy_p (gdbarch, 1);
+ set_gdbarch_call_dummy_words (gdbarch, vax_call_dummy_words);
+ set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof_vax_call_dummy_words);
+ set_gdbarch_fix_call_dummy (gdbarch, vax_fix_call_dummy);
+ set_gdbarch_call_dummy_start_offset (gdbarch, 0);
+ set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
+ set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 7);
+ set_gdbarch_use_generic_dummy_frames (gdbarch, 0);
+ set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_on_stack);
+ set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
+
+ /* Breakpoint info */
+ set_gdbarch_decr_pc_after_break (gdbarch, 0);
+
+ /* Misc info */
+ set_gdbarch_function_start_offset (gdbarch, 2);
+
+ return (gdbarch);
+}
void
_initialize_vax_tdep (void)
{
+ gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL);
+
tm_print_insn = vax_print_insn;
}
--- /dev/null
+/* Common target dependent code for GDB on VAX systems.
+ Copyright 2002 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 VAX_TDEP_H
+#define VAX_TDEP_H
+
+/* 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
+ real way to know how big a register is. */
+#define VAX_REGISTER_SIZE 4
+
+/* Number of machine registers. */
+#define VAX_NUM_REGS 17
+
+/* Total amount of space needed to store our copies of the machine's
+ register state. */
+#define VAX_REGISTER_BYTES (VAX_NUM_REGS * 4)
+
+/* Largest value REGISTER_RAW_SIZE can have. */
+#define VAX_MAX_REGISTER_RAW_SIZE 4
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have. */
+#define VAX_MAX_REGISTER_VIRTUAL_SIZE 4
+
+/* 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 are "phony" register numbers 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. */
+
+#define VAX_AP_REGNUM 12 /* argument pointer */
+#define VAX_FP_REGNUM 13 /* Contains address of executing stack frame */
+#define VAX_SP_REGNUM 14 /* Contains address of top of stack */
+#define VAX_PC_REGNUM 15 /* Contains program counter */
+#define VAX_PS_REGNUM 16 /* Contains processor status */
+
+#endif /* VAX_TDEP_H */
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