-/* Print NS 32000 instructions for GDB, the GNU debugger.
- Copyright 1986, 1988, 1991, 1992, 1994, 1995, 1998, 1999, 2000, 2001,
- 2002 Free Software Foundation, Inc.
+/* Target dependent code for the NS32000, for GDB.
+
+ Copyright 1986, 1988, 1991, 1992, 1994, 1995, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "frame.h"
+#include "gdbtypes.h"
#include "gdbcore.h"
+#include "inferior.h"
+#include "regcache.h"
+#include "target.h"
+#include "arch-utils.h"
+#include "osabi.h"
+#include "dis-asm.h"
+
+#include "ns32k-tdep.h"
+#include "gdb_string.h"
static int sign_extend (int value, int bits);
static CORE_ADDR ns32k_get_enter_addr (CORE_ADDR);
static int ns32k_localcount (CORE_ADDR enter_pc);
static void flip_bytes (void *, int);
-char *
+static const char *
ns32k_register_name_32082 (int regno)
{
static char *register_names[] =
return (register_names[regno]);
}
-char *
+static const char *
ns32k_register_name_32382 (int regno)
{
static char *register_names[] =
return (register_names[regno]);
}
-int
+static int
ns32k_register_byte_32082 (int regno)
{
- if (regno >= LP0_REGNUM)
- return (LP0_REGNUM * 4) + ((regno - LP0_REGNUM) * 8);
+ if (regno >= NS32K_LP0_REGNUM)
+ return (NS32K_LP0_REGNUM * 4) + ((regno - NS32K_LP0_REGNUM) * 8);
return (regno * 4);
}
-int
+static int
ns32k_register_byte_32382 (int regno)
{
/* This is a bit yuk. The even numbered double precision floating
registers are at the end. Doing it this way is compatible for both
32081 and 32381 equipped machines. */
- return ((regno < LP0_REGNUM ? regno
- : (regno - LP0_REGNUM) & 1 ? regno - 1
- : (regno - LP0_REGNUM + FP0_REGNUM)) * 4);
+ return ((regno < NS32K_LP0_REGNUM ? regno
+ : (regno - NS32K_LP0_REGNUM) & 1 ? regno - 1
+ : (regno - NS32K_LP0_REGNUM + FP0_REGNUM)) * 4);
}
-int
+static int
ns32k_register_raw_size (int regno)
{
/* All registers are 4 bytes, except for the doubled floating
registers. */
- return ((regno >= LP0_REGNUM) ? 8 : 4);
+ return ((regno >= NS32K_LP0_REGNUM) ? 8 : 4);
}
-int
+static int
ns32k_register_virtual_size (int regno)
{
- return ((regno >= LP0_REGNUM) ? 8 : 4);
+ return ((regno >= NS32K_LP0_REGNUM) ? 8 : 4);
}
-struct type *
+static struct type *
ns32k_register_virtual_type (int regno)
{
if (regno < FP0_REGNUM)
if (regno < FP0_REGNUM + 8)
return (builtin_type_float);
- if (regno < LP0_REGNUM)
+ if (regno < NS32K_LP0_REGNUM)
return (builtin_type_int);
return (builtin_type_double);
}
+/* Immediately after a function call, return the saved PC. Can't
+ always go through the frames for this because on some systems,
+ the new frame is not set up until the new function executes some
+ instructions. */
+
+static CORE_ADDR
+ns32k_saved_pc_after_call (struct frame_info *frame)
+{
+ return (read_memory_integer (read_register (SP_REGNUM), 4));
+}
+
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
-CORE_ADDR
+static CORE_ADDR
umax_skip_prologue (CORE_ADDR pc)
{
- register unsigned char op = read_memory_integer (pc, 1);
+ unsigned char op = read_memory_integer (pc, 1);
if (op == 0x82)
{
op = read_memory_integer (pc + 2, 1);
return pc;
}
\f
-const unsigned char *
+static const unsigned char *
ns32k_breakpoint_from_pc (CORE_ADDR *pcp, int *lenp)
{
static const unsigned char breakpoint_insn[] = { 0xf2 };
so this will often not work properly. If the arg names
are known, it's likely most of them will be printed. */
-int
+static int
umax_frame_num_args (struct frame_info *fi)
{
int numargs;
int width;
numargs = -1;
- enter_addr = ns32k_get_enter_addr ((fi)->pc);
+ enter_addr = ns32k_get_enter_addr (get_frame_pc (fi));
if (enter_addr > 0)
{
pc = ((enter_addr == 1)
- ? SAVED_PC_AFTER_CALL (fi)
- : FRAME_SAVED_PC (fi));
+ ? DEPRECATED_SAVED_PC_AFTER_CALL (fi)
+ : DEPRECATED_FRAME_SAVED_PC (fi));
insn = read_memory_integer (pc, 2);
addr_mode = (insn >> 11) & 0x1f;
insn = insn & 0x7ff;
return enter_addr; /* pc is between enter and exit */
}
-CORE_ADDR
+static CORE_ADDR
ns32k_frame_chain (struct frame_info *frame)
{
/* In the case of the NS32000 series, the frame's nominal address is the
FP value, and that address is saved at the previous FP value as a
4-byte word. */
+ return (read_memory_integer (get_frame_base (frame), 4));
+}
- if (inside_entry_file (frame->pc))
- return 0;
- return (read_memory_integer (frame->frame, 4));
+static CORE_ADDR
+ns32k_sigtramp_saved_pc (struct frame_info *frame)
+{
+ CORE_ADDR sigcontext_addr;
+ char *buf;
+ int ptrbytes = TYPE_LENGTH (builtin_type_void_func_ptr);
+ int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT;
+
+ buf = alloca (ptrbytes);
+ /* Get sigcontext address, it is the third parameter on the stack. */
+ if (get_next_frame (frame))
+ sigcontext_addr = read_memory_typed_address
+ (DEPRECATED_FRAME_ARGS_ADDRESS (get_next_frame (frame)) + FRAME_ARGS_SKIP + sigcontext_offs,
+ builtin_type_void_data_ptr);
+ else
+ sigcontext_addr = read_memory_typed_address
+ (read_register (SP_REGNUM) + sigcontext_offs, builtin_type_void_data_ptr);
+
+ /* Offset to saved PC in sigcontext, from <machine/signal.h>. Don't
+ cause a memory_error when accessing sigcontext in case the stack
+ layout has changed or the stack is corrupt. */
+ target_read_memory (sigcontext_addr + 20, buf, ptrbytes);
+ return extract_typed_address (buf, builtin_type_void_func_ptr);
}
-CORE_ADDR
+static CORE_ADDR
ns32k_frame_saved_pc (struct frame_info *frame)
{
- if (frame->signal_handler_caller)
- return (sigtramp_saved_pc (frame)); /* XXXJRT */
+ if ((get_frame_type (frame) == SIGTRAMP_FRAME))
+ return (ns32k_sigtramp_saved_pc (frame)); /* XXXJRT */
- return (read_memory_integer (frame->frame + 4, 4));
+ return (read_memory_integer (get_frame_base (frame) + 4, 4));
}
-CORE_ADDR
+static CORE_ADDR
ns32k_frame_args_address (struct frame_info *frame)
{
- if (ns32k_get_enter_addr (frame->pc) > 1)
- return (frame->frame);
+ if (ns32k_get_enter_addr (get_frame_pc (frame)) > 1)
+ return (get_frame_base (frame));
return (read_register (SP_REGNUM) - 4);
}
-CORE_ADDR
-ns32k_frame_locals_address (struct frame_info *frame)
-{
- return (frame->frame);
-}
-
/* Code to initialize the addresses of the saved registers of frame described
by FRAME_INFO. This includes special registers such as pc and fp saved in
special ways in the stack frame. sp is even more special: the address we
return for it IS the sp for the next frame. */
-void
+static void
ns32k_frame_init_saved_regs (struct frame_info *frame)
{
int regmask, regnum;
int localcount;
CORE_ADDR enter_addr, next_addr;
- if (frame->saved_regs)
+ if (deprecated_get_frame_saved_regs (frame))
return;
frame_saved_regs_zalloc (frame);
- enter_addr = ns32k_get_enter_addr (frame->pc);
+ enter_addr = ns32k_get_enter_addr (get_frame_pc (frame));
if (enter_addr > 1)
{
regmask = read_memory_integer (enter_addr + 1, 1) & 0xff;
localcount = ns32k_localcount (enter_addr);
- next_addr = frame->frame + localcount;
+ next_addr = get_frame_base (frame) + localcount;
for (regnum = 0; regnum < 8; regnum++)
{
if (regmask & (1 << regnum))
- frame->saved_regs[regnum] = next_addr -= 4;
+ deprecated_get_frame_saved_regs (frame)[regnum] = next_addr -= 4;
}
- frame->saved_regs[SP_REGNUM] = frame->frame + 4;
- frame->saved_regs[PC_REGNUM] = frame->frame + 4;
- frame->saved_regs[FP_REGNUM] = read_memory_integer (frame->frame, 4);
+ deprecated_get_frame_saved_regs (frame)[SP_REGNUM] = get_frame_base (frame) + 4;
+ deprecated_get_frame_saved_regs (frame)[PC_REGNUM] = get_frame_base (frame) + 4;
+ deprecated_get_frame_saved_regs (frame)[DEPRECATED_FP_REGNUM] = read_memory_integer (get_frame_base (frame), 4);
}
else if (enter_addr == 1)
{
CORE_ADDR sp = read_register (SP_REGNUM);
- frame->saved_regs[PC_REGNUM] = sp;
- frame->saved_regs[SP_REGNUM] = sp + 4;
+ deprecated_get_frame_saved_regs (frame)[PC_REGNUM] = sp;
+ deprecated_get_frame_saved_regs (frame)[SP_REGNUM] = sp + 4;
}
}
-void
-ns32k_push_dummy_frame (void)
-{
- CORE_ADDR sp = read_register (SP_REGNUM);
- int regnum;
-
- sp = push_word (sp, read_register (PC_REGNUM));
- sp = push_word (sp, read_register (FP_REGNUM));
- write_register (FP_REGNUM, sp);
-
- for (regnum = 0; regnum < 8; regnum++)
- sp = push_word (sp, read_register (regnum));
-
- write_register (SP_REGNUM, sp);
-}
-
-void
+static void
ns32k_pop_frame (void)
{
struct frame_info *frame = get_current_frame ();
CORE_ADDR fp;
int regnum;
- fp = frame->frame;
- FRAME_INIT_SAVED_REGS (frame);
+ fp = get_frame_base (frame);
+ DEPRECATED_FRAME_INIT_SAVED_REGS (frame);
for (regnum = 0; regnum < 8; regnum++)
- if (frame->saved_regs[regnum])
+ if (deprecated_get_frame_saved_regs (frame)[regnum])
write_register (regnum,
- read_memory_integer (frame->saved_regs[regnum], 4));
+ read_memory_integer (deprecated_get_frame_saved_regs (frame)[regnum], 4));
- write_register (FP_REGNUM, read_memory_integer (fp, 4));
+ write_register (DEPRECATED_FP_REGNUM, read_memory_integer (fp, 4));
write_register (PC_REGNUM, read_memory_integer (fp + 4, 4));
write_register (SP_REGNUM, fp + 8);
flush_cached_frames ();
It is 16 bytes long. */
-LONGEST ns32k_call_dummy_words[] =
-{
- 0x7f00ff82,
- 0x0201c0ae,
- 0x01a57f03,
- 0xf2040302
-};
-int sizeof_ns32k_call_dummy_words = sizeof (ns32k_call_dummy_words);
-
#define NS32K_CALL_DUMMY_ADDR 5
#define NS32K_CALL_DUMMY_NARGS 11
-void
+static void
ns32k_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 + NS32K_CALL_DUMMY_NARGS, 4, flipped);
}
\f
+static void
+ns32k_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
+{
+ /* On this machine, this is a no-op (Encore Umax didn't use GCC). */
+}
+
+static void
+ns32k_extract_return_value (struct type *valtype, char *regbuf, char *valbuf)
+{
+ memcpy (valbuf,
+ regbuf + DEPRECATED_REGISTER_BYTE (TYPE_CODE (valtype) == TYPE_CODE_FLT ?
+ FP0_REGNUM : 0), TYPE_LENGTH (valtype));
+}
+
+static void
+ns32k_store_return_value (struct type *valtype, char *valbuf)
+{
+ deprecated_write_register_bytes (TYPE_CODE (valtype) == TYPE_CODE_FLT
+ ? FP0_REGNUM : 0, valbuf,
+ TYPE_LENGTH (valtype));
+}
+
+void
+ns32k_gdbarch_init_32082 (struct gdbarch *gdbarch)
+{
+ set_gdbarch_num_regs (gdbarch, NS32K_NUM_REGS_32082);
+
+ set_gdbarch_register_name (gdbarch, ns32k_register_name_32082);
+ set_gdbarch_deprecated_register_bytes (gdbarch, NS32K_REGISTER_BYTES_32082);
+ set_gdbarch_deprecated_register_byte (gdbarch, ns32k_register_byte_32082);
+}
+
+void
+ns32k_gdbarch_init_32382 (struct gdbarch *gdbarch)
+{
+ set_gdbarch_num_regs (gdbarch, NS32K_NUM_REGS_32382);
+
+ set_gdbarch_register_name (gdbarch, ns32k_register_name_32382);
+ set_gdbarch_deprecated_register_bytes (gdbarch, NS32K_REGISTER_BYTES_32382);
+ set_gdbarch_deprecated_register_byte (gdbarch, ns32k_register_byte_32382);
+}
+
+/* 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 *
+ns32k_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+{
+ struct gdbarch *gdbarch;
+
+ /* If there is already a candidate, use it. */
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+ if (arches != NULL)
+ return arches->gdbarch;
+
+ gdbarch = gdbarch_alloc (&info, NULL);
+
+ /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
+ ready to unwind the PC first (see frame.c:get_prev_frame()). */
+ set_gdbarch_deprecated_init_frame_pc (gdbarch, deprecated_init_frame_pc_default);
+
+ /* Register info */
+ ns32k_gdbarch_init_32082 (gdbarch);
+ set_gdbarch_num_regs (gdbarch, NS32K_SP_REGNUM);
+ set_gdbarch_num_regs (gdbarch, NS32K_FP_REGNUM);
+ set_gdbarch_num_regs (gdbarch, NS32K_PC_REGNUM);
+ set_gdbarch_num_regs (gdbarch, NS32K_PS_REGNUM);
+
+ set_gdbarch_deprecated_register_size (gdbarch, NS32K_REGISTER_SIZE);
+ set_gdbarch_deprecated_register_raw_size (gdbarch, ns32k_register_raw_size);
+ set_gdbarch_deprecated_max_register_raw_size (gdbarch, NS32K_MAX_REGISTER_RAW_SIZE);
+ set_gdbarch_deprecated_register_virtual_size (gdbarch, ns32k_register_virtual_size);
+ set_gdbarch_deprecated_max_register_virtual_size (gdbarch,
+ NS32K_MAX_REGISTER_VIRTUAL_SIZE);
+ set_gdbarch_deprecated_register_virtual_type (gdbarch, ns32k_register_virtual_type);
+
+ /* Frame and stack info */
+ set_gdbarch_skip_prologue (gdbarch, umax_skip_prologue);
+ set_gdbarch_deprecated_saved_pc_after_call (gdbarch, ns32k_saved_pc_after_call);
+
+ set_gdbarch_frame_num_args (gdbarch, umax_frame_num_args);
+
+ set_gdbarch_deprecated_frame_chain (gdbarch, ns32k_frame_chain);
+ set_gdbarch_deprecated_frame_saved_pc (gdbarch, ns32k_frame_saved_pc);
+
+ set_gdbarch_deprecated_frame_args_address (gdbarch, ns32k_frame_args_address);
+
+ set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, ns32k_frame_init_saved_regs);
+
+ set_gdbarch_frame_args_skip (gdbarch, 8);
+
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+
+ /* Return value info */
+ set_gdbarch_deprecated_store_struct_return (gdbarch, ns32k_store_struct_return);
+ set_gdbarch_deprecated_extract_return_value (gdbarch, ns32k_extract_return_value);
+ set_gdbarch_deprecated_store_return_value (gdbarch, ns32k_store_return_value);
+
+ /* Call dummy info */
+ set_gdbarch_deprecated_pop_frame (gdbarch, ns32k_pop_frame);
+ set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
+
+ /* Breakpoint info */
+ set_gdbarch_breakpoint_from_pc (gdbarch, ns32k_breakpoint_from_pc);
+
+ /* Should be using push_dummy_call. */
+ set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
+
+ set_gdbarch_print_insn (gdbarch, print_insn_ns32k);
+
+ /* Hook in OS ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
+ return (gdbarch);
+}
+
+extern initialize_file_ftype _initialize_ns32k_tdep; /* -Wmissing-prototypes */
+
void
_initialize_ns32k_tdep (void)
{
- tm_print_insn = print_insn_ns32k;
+ gdbarch_register (bfd_arch_ns32k, ns32k_gdbarch_init, NULL);
+
}
projects / deliverable / binutils-gdb.git / blobdiff