-/* Print VAX instructions for GDB, the GNU debugger.
+/* Target-dependent code for the VAX.
Copyright 1986, 1989, 1991, 1992, 1995, 1996, 1998, 1999, 2000,
- 2002, 2003, 2004 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GDB.
Boston, MA 02111-1307, USA. */
#include "defs.h"
-#include "symtab.h"
-#include "opcode/vax.h"
-#include "gdbcore.h"
-#include "inferior.h"
-#include "regcache.h"
+#include "arch-utils.h"
+#include "dis-asm.h"
#include "frame.h"
#include "frame-base.h"
#include "frame-unwind.h"
+#include "gdbcore.h"
+#include "gdbtypes.h"
+#include "osabi.h"
+#include "regcache.h"
+#include "regset.h"
#include "trad-frame.h"
#include "value.h"
-#include "arch-utils.h"
+
#include "gdb_string.h"
-#include "osabi.h"
-#include "dis-asm.h"
#include "vax-tdep.h"
return builtin_type_int;
}
\f
+/* Core file support. */
+
+/* Supply register REGNUM from the buffer specified by GREGS and LEN
+ in the general-purpose register set REGSET to register cache
+ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
-/* The VAX Unix calling convention uses R1 to pass a structure return
+static void
+vax_supply_gregset (const struct regset *regset, struct regcache *regcache,
+ int regnum, const void *gregs, size_t len)
+{
+ const char *regs = gregs;
+ int i;
+
+ for (i = 0; i < VAX_NUM_REGS; i++)
+ {
+ if (regnum == i || regnum == -1)
+ regcache_raw_supply (regcache, i, regs + i * 4);
+ }
+}
+
+/* VAX register set. */
+
+static struct regset vax_gregset =
+{
+ NULL,
+ vax_supply_gregset
+};
+
+/* Return the appropriate register set for the core section identified
+ by SECT_NAME and SECT_SIZE. */
+
+static const struct regset *
+vax_regset_from_core_section (struct gdbarch *gdbarch,
+ const char *sect_name, size_t sect_size)
+{
+ if (strcmp (sect_name, ".reg") == 0 && sect_size >= VAX_NUM_REGS * 4)
+ return &vax_gregset;
+
+ return NULL;
+}
+\f
+/* The VAX UNIX calling convention uses R1 to pass a structure return
value address instead of passing it as a first (hidden) argument as
the VMS calling convention suggests. */
/* Push arguments in reverse order. */
for (i = nargs - 1; i >= 0; i--)
{
- int len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (args[i]));
+ int len = TYPE_LENGTH (value_enclosing_type (args[i]));
sp -= (len + 3) & ~3;
count += (len + 3) / 4;
- write_memory (sp, VALUE_CONTENTS_ALL (args[i]), len);
+ write_memory (sp, value_contents_all (args[i]), len);
}
/* Push argument count. */
}
static CORE_ADDR
-vax_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,
+vax_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr, int nargs,
struct value **args, CORE_ADDR sp, int struct_return,
CORE_ADDR struct_addr)
char buf[8];
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION
|| TYPE_CODE (type) == TYPE_CODE_ARRAY)
- return RETURN_VALUE_STRUCT_CONVENTION;
+ {
+ /* The default on VAX is to return structures in static memory.
+ Consequently a function must return the address where we can
+ find the return value. */
+
+ if (readbuf)
+ {
+ ULONGEST addr;
+
+ regcache_raw_read_unsigned (regcache, VAX_R0_REGNUM, &addr);
+ read_memory (addr, readbuf, len);
+ }
+
+ return RETURN_VALUE_ABI_RETURNS_ADDRESS;
+ }
if (readbuf)
{
static CORE_ADDR
vax_skip_prologue (CORE_ADDR pc)
{
- int op = (unsigned char) read_memory_integer (pc, 1);
+ unsigned char op = read_memory_unsigned_integer (pc, 1);
+
if (op == 0x11)
pc += 2; /* skip brb */
if (op == 0x31)
pc += 3; /* skip brw */
if (op == 0xC2
- && ((unsigned char) read_memory_integer (pc + 2, 1)) == 0x5E)
+ && (read_memory_unsigned_integer (pc + 2, 1)) == 0x5E)
pc += 3; /* skip subl2 */
if (op == 0x9E
- && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xAE
- && ((unsigned char) read_memory_integer (pc + 3, 1)) == 0x5E)
+ && (read_memory_unsigned_integer (pc + 1, 1)) == 0xAE
+ && (read_memory_unsigned_integer (pc + 3, 1)) == 0x5E)
pc += 4; /* skip movab */
if (op == 0x9E
- && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xCE
- && ((unsigned char) read_memory_integer (pc + 4, 1)) == 0x5E)
+ && (read_memory_unsigned_integer (pc + 1, 1)) == 0xCE
+ && (read_memory_unsigned_integer (pc + 4, 1)) == 0x5E)
pc += 5; /* skip movab */
if (op == 0x9E
- && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xEE
- && ((unsigned char) read_memory_integer (pc + 6, 1)) == 0x5E)
+ && (read_memory_unsigned_integer (pc + 1, 1)) == 0xEE
+ && (read_memory_unsigned_integer (pc + 6, 1)) == 0x5E)
pc += 7; /* skip movab */
+
return pc;
}
\f
if (cache->base == 0)
return;
- (*this_id) = frame_id_build (cache->base, frame_pc_unwind (next_frame));
+ (*this_id) = frame_id_build (cache->base, frame_func_unwind (next_frame));
}
static void
{
struct vax_frame_cache *cache = vax_frame_cache (next_frame, this_cache);
- trad_frame_prev_register (next_frame, cache->saved_regs, regnum,
- optimizedp, lvalp, addrp, realnump, valuep);
+ trad_frame_get_prev_register (next_frame, cache->saved_regs, regnum,
+ optimizedp, lvalp, addrp, realnump, valuep);
}
static const struct frame_unwind vax_frame_unwind =
/* Assume that the argument pointer for the outermost frame is
hosed, as is the case on NetBSD/vax ELF. */
- if (get_frame_base (frame) == 0)
+ if (get_frame_base_address (frame) == 0)
return 0;
args = get_frame_register_unsigned (frame, VAX_AP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM);
set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM);
+ set_gdbarch_regset_from_core_section
+ (gdbarch, vax_regset_from_core_section);
+
/* Frame and stack info */
set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue);
set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args);
-
set_gdbarch_frame_args_skip (gdbarch, 4);
/* Stack grows downward. */
set_gdbarch_breakpoint_from_pc (gdbarch, vax_breakpoint_from_pc);
/* Misc info */
- set_gdbarch_function_start_offset (gdbarch, 2);
+ set_gdbarch_deprecated_function_start_offset (gdbarch, 2);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
+ set_gdbarch_print_insn (gdbarch, print_insn_vax);
+
set_gdbarch_unwind_pc (gdbarch, vax_unwind_pc);
frame_base_set_default (gdbarch, &vax_frame_base);
frame_unwind_append_sniffer (gdbarch, vax_frame_sniffer);
- set_gdbarch_print_insn (gdbarch, print_insn_vax);
-
return (gdbarch);
}
-extern initialize_file_ftype _initialize_vax_tdep; /* -Wmissing-prototypes */
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_vax_tdep (void);
void
_initialize_vax_tdep (void)