/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
- Copyright 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright 1996, 1997, 1998, 2000, 2001
+ Free Software Foundation, Inc.
This file is part of GDB.
#include "gdb_string.h"
#include "gdbcore.h"
#include "symfile.h"
+#include "regcache.h"
-static CORE_ADDR mn10300_analyze_prologue PARAMS ((struct frame_info * fi,
- CORE_ADDR pc));
+extern void _initialize_mn10300_tdep (void);
+static CORE_ADDR mn10300_analyze_prologue (struct frame_info *fi,
+ CORE_ADDR pc);
+
+/* mn10300 private data */
+struct gdbarch_tdep
+{
+ int am33_mode;
+#define AM33_MODE (gdbarch_tdep (current_gdbarch)->am33_mode)
+};
/* Additional info used by the frame */
};
-static char *mn10300_generic_register_names[] =
-{"d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3",
- "sp", "pc", "mdr", "psw", "lir", "lar", "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "fp"};
-
-static char **mn10300_register_names = mn10300_generic_register_names;
+static char *
+register_name (int reg, char **regs, long sizeof_regs)
+{
+ if (reg < 0 || reg >= sizeof_regs / sizeof (regs[0]))
+ return NULL;
+ else
+ return regs[reg];
+}
-char *
-mn10300_register_name (i)
- int i;
+static char *
+mn10300_generic_register_name (int reg)
{
- return mn10300_register_names[i];
+ static char *regs[] =
+ { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3",
+ "sp", "pc", "mdr", "psw", "lir", "lar", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "fp"
+ };
+ return register_name (reg, regs, sizeof regs);
}
+
+static char *
+am33_register_name (int reg)
+{
+ static char *regs[] =
+ { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3",
+ "sp", "pc", "mdr", "psw", "lir", "lar", "",
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "ssp", "msp", "usp", "mcrh", "mcrl", "mcvf", "", "", ""
+ };
+ return register_name (reg, regs, sizeof regs);
+}
+
CORE_ADDR
-mn10300_saved_pc_after_call (fi)
- struct frame_info *fi;
+mn10300_saved_pc_after_call (struct frame_info *fi)
{
return read_memory_integer (read_register (SP_REGNUM), 4);
}
void
-mn10300_extract_return_value (type, regbuf, valbuf)
- struct type *type;
- char *regbuf;
- char *valbuf;
+mn10300_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_PTR)
memcpy (valbuf, regbuf + REGISTER_BYTE (4), TYPE_LENGTH (type));
}
CORE_ADDR
-mn10300_extract_struct_value_address (regbuf)
- char *regbuf;
+mn10300_extract_struct_value_address (char *regbuf)
{
return extract_address (regbuf + REGISTER_BYTE (4),
REGISTER_RAW_SIZE (4));
}
void
-mn10300_store_return_value (type, valbuf)
- struct type *type;
- char *valbuf;
+mn10300_store_return_value (struct type *type, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_PTR)
write_register_bytes (REGISTER_BYTE (4), valbuf, TYPE_LENGTH (type));
write_register_bytes (REGISTER_BYTE (0), valbuf, TYPE_LENGTH (type));
}
-static struct frame_info *analyze_dummy_frame PARAMS ((CORE_ADDR, CORE_ADDR));
+static struct frame_info *analyze_dummy_frame (CORE_ADDR, CORE_ADDR);
static struct frame_info *
-analyze_dummy_frame (pc, frame)
- CORE_ADDR pc;
- CORE_ADDR frame;
+analyze_dummy_frame (CORE_ADDR pc, CORE_ADDR frame)
{
static struct frame_info *dummy = NULL;
if (dummy == NULL)
/* Should call_function allocate stack space for a struct return? */
int
-mn10300_use_struct_convention (gcc_p, type)
- int gcc_p;
- struct type *type;
+mn10300_use_struct_convention (int gcc_p, struct type *type)
{
return (TYPE_NFIELDS (type) > 1 || TYPE_LENGTH (type) > 8);
}
one, so we defined it ourselves. */
unsigned char *
-mn10300_breakpoint_from_pc (bp_addr, bp_size)
- CORE_ADDR *bp_addr;
- int *bp_size;
+mn10300_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size)
{
static char breakpoint[] =
{0xff};
function for mn10300_analyze_prologue. */
static void
-fix_frame_pointer (fi, stack_size)
- struct frame_info *fi;
- int stack_size;
+fix_frame_pointer (struct frame_info *fi, int stack_size)
{
if (fi && fi->next == NULL)
{
This is a helper function for mn10300_analyze_prologue. */
static void
-set_movm_offsets (fi, movm_args)
- struct frame_info *fi;
- int movm_args;
+set_movm_offsets (struct frame_info *fi, int movm_args)
{
int offset = 0;
fi->saved_regs[D2_REGNUM] = fi->frame + offset;
offset += 4;
}
+ if (AM33_MODE && movm_args & 0x02)
+ {
+ fi->saved_regs[E0_REGNUM + 5] = fi->frame + offset;
+ fi->saved_regs[E0_REGNUM + 4] = fi->frame + offset + 4;
+ fi->saved_regs[E0_REGNUM + 3] = fi->frame + offset + 8;
+ fi->saved_regs[E0_REGNUM + 2] = fi->frame + offset + 12;
+ }
}
frame chain to not bother trying to unwind past this frame. */
static CORE_ADDR
-mn10300_analyze_prologue (fi, pc)
- struct frame_info *fi;
- CORE_ADDR pc;
+mn10300_analyze_prologue (struct frame_info *fi, CORE_ADDR pc)
{
CORE_ADDR func_addr, func_end, addr, stop;
CORE_ADDR stack_size;
stack pointer that was in use at the time the function call was made? */
CORE_ADDR
-mn10300_frame_chain (fi)
- struct frame_info *fi;
+mn10300_frame_chain (struct frame_info *fi)
{
struct frame_info *dummy;
/* Walk through the prologue to determine the stack size,
adjust += (fi->saved_regs[D3_REGNUM] ? 4 : 0);
adjust += (fi->saved_regs[A2_REGNUM] ? 4 : 0);
adjust += (fi->saved_regs[A3_REGNUM] ? 4 : 0);
+ if (AM33_MODE)
+ {
+ adjust += (fi->saved_regs[E0_REGNUM + 5] ? 4 : 0);
+ adjust += (fi->saved_regs[E0_REGNUM + 4] ? 4 : 0);
+ adjust += (fi->saved_regs[E0_REGNUM + 3] ? 4 : 0);
+ adjust += (fi->saved_regs[E0_REGNUM + 2] ? 4 : 0);
+ }
/* Our caller does not have a frame pointer. So his frame starts
at the base of our frame (fi->frame) + register save space
Return the address of the first inst past the prologue of the function. */
CORE_ADDR
-mn10300_skip_prologue (pc)
- CORE_ADDR pc;
+mn10300_skip_prologue (CORE_ADDR pc)
{
/* We used to check the debug symbols, but that can lose if
we have a null prologue. */
command, or the call dummy breakpoint gets hit. */
void
-mn10300_pop_frame (frame)
- struct frame_info *frame;
+mn10300_pop_frame (struct frame_info *frame)
{
int regnum;
order on the stack. */
CORE_ADDR
-mn10300_push_arguments (nargs, args, sp, struct_return, struct_addr)
- int nargs;
- value_ptr *args;
- CORE_ADDR sp;
- unsigned char struct_return;
- CORE_ADDR struct_addr;
+mn10300_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
+ int struct_return, CORE_ADDR struct_addr)
{
int argnum = 0;
int len = 0;
Needed for targets where we don't actually execute a JSR/BSR instruction */
CORE_ADDR
-mn10300_push_return_address (pc, sp)
- CORE_ADDR pc;
- CORE_ADDR sp;
+mn10300_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
unsigned char buf[4];
call. */
CORE_ADDR
-mn10300_store_struct_return (addr, sp)
- CORE_ADDR addr;
- CORE_ADDR sp;
+mn10300_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
/* The structure return address is passed as the first argument. */
write_register (0, addr);
will be found. */
CORE_ADDR
-mn10300_frame_saved_pc (fi)
- struct frame_info *fi;
+mn10300_frame_saved_pc (struct frame_info *fi)
{
int adjust = 0;
adjust += (fi->saved_regs[D3_REGNUM] ? 4 : 0);
adjust += (fi->saved_regs[A2_REGNUM] ? 4 : 0);
adjust += (fi->saved_regs[A3_REGNUM] ? 4 : 0);
+ if (AM33_MODE)
+ {
+ adjust += (fi->saved_regs[E0_REGNUM + 5] ? 4 : 0);
+ adjust += (fi->saved_regs[E0_REGNUM + 4] ? 4 : 0);
+ adjust += (fi->saved_regs[E0_REGNUM + 3] ? 4 : 0);
+ adjust += (fi->saved_regs[E0_REGNUM + 2] ? 4 : 0);
+ }
return (read_memory_integer (fi->frame + adjust, REGISTER_SIZE));
}
pointer just prior to calling the target function (see run_stack_dummy). */
void
-mn10300_init_extra_frame_info (fi)
- struct frame_info *fi;
+mn10300_init_extra_frame_info (struct frame_info *fi)
{
if (fi->next)
fi->pc = FRAME_SAVED_PC (fi->next);
any frame pointer offsets. */
void
-mn10300_virtual_frame_pointer (pc, reg, offset)
- CORE_ADDR pc;
- long *reg;
- long *offset;
+mn10300_virtual_frame_pointer (CORE_ADDR pc, long *reg, long *offset)
{
struct frame_info *dummy = analyze_dummy_frame (pc, 0);
/* Set up a dummy frame_info, Analyze the prolog and fill in the
}
}
-/* This can be made more generic later. */
+static int
+mn10300_reg_struct_has_addr (int gcc_p, struct type *type)
+{
+ return (TYPE_LENGTH (type) > 8);
+}
+
+static struct type *
+mn10300_register_virtual_type (int reg)
+{
+ return builtin_type_int;
+}
+
+static int
+mn10300_register_byte (int reg)
+{
+ return (reg * 4);
+}
+
+static int
+mn10300_register_virtual_size (int reg)
+{
+ return 4;
+}
+
+static int
+mn10300_register_raw_size (int reg)
+{
+ return 4;
+}
+
static void
-set_machine_hook (filename)
- char *filename;
+mn10300_print_register (const char *name, int regnum, int reg_width)
{
- int i;
+ char *raw_buffer = alloca (MAX_REGISTER_RAW_SIZE);
- if (bfd_get_mach (exec_bfd) == bfd_mach_mn10300
- || bfd_get_mach (exec_bfd) == 0)
+ if (reg_width)
+ printf_filtered ("%*s: ", reg_width, name);
+ else
+ printf_filtered ("%s: ", name);
+
+ /* Get the data */
+ if (read_relative_register_raw_bytes (regnum, raw_buffer))
+ {
+ printf_filtered ("[invalid]");
+ return;
+ }
+ else
{
- mn10300_register_names = mn10300_generic_register_names;
+ int byte;
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ {
+ for (byte = REGISTER_RAW_SIZE (regnum) - REGISTER_VIRTUAL_SIZE (regnum);
+ byte < REGISTER_RAW_SIZE (regnum);
+ byte++)
+ printf_filtered ("%02x", (unsigned char) raw_buffer[byte]);
+ }
+ else
+ {
+ for (byte = REGISTER_VIRTUAL_SIZE (regnum) - 1;
+ byte >= 0;
+ byte--)
+ printf_filtered ("%02x", (unsigned char) raw_buffer[byte]);
+ }
}
+}
+static void
+mn10300_do_registers_info (int regnum, int fpregs)
+{
+ if (regnum >= 0)
+ {
+ const char *name = REGISTER_NAME (regnum);
+ if (name == NULL || name[0] == '\0')
+ error ("Not a valid register for the current processor type");
+ mn10300_print_register (name, regnum, 0);
+ printf_filtered ("\n");
+ }
+ else
+ {
+ /* print registers in an array 4x8 */
+ int r;
+ int reg;
+ const int nr_in_row = 4;
+ const int reg_width = 4;
+ for (r = 0; r < NUM_REGS; r += nr_in_row)
+ {
+ int c;
+ int printing = 0;
+ int padding = 0;
+ for (c = r; c < r + nr_in_row; c++)
+ {
+ const char *name = REGISTER_NAME (c);
+ if (name != NULL && *name != '\0')
+ {
+ printing = 1;
+ while (padding > 0)
+ {
+ printf_filtered (" ");
+ padding--;
+ }
+ mn10300_print_register (name, c, reg_width);
+ printf_filtered (" ");
+ }
+ else
+ {
+ padding += (reg_width + 2 + 8 + 1);
+ }
+ }
+ if (printing)
+ printf_filtered ("\n");
+ }
+ }
}
+/* Dump out the mn10300 speciic architecture information. */
+
+static void
+mn10300_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ fprintf_unfiltered (file, "mn10300_dump_tdep: am33_mode = %d\n",
+ tdep->am33_mode);
+}
+
+static struct gdbarch *
+mn10300_gdbarch_init (struct gdbarch_info info,
+ struct gdbarch_list *arches)
+{
+ struct gdbarch *gdbarch;
+ struct gdbarch_tdep *tdep = NULL;
+ int am33_mode;
+ gdbarch_register_name_ftype *register_name;
+ int mach;
+ int num_regs;
+
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+ if (arches != NULL)
+ return arches->gdbarch;
+ tdep = xmalloc (sizeof (struct gdbarch_tdep));
+ gdbarch = gdbarch_alloc (&info, tdep);
+
+ if (info.bfd_arch_info != NULL
+ && info.bfd_arch_info->arch == bfd_arch_mn10300)
+ mach = info.bfd_arch_info->mach;
+ else
+ mach = 0;
+ switch (mach)
+ {
+ case 0:
+ case bfd_mach_mn10300:
+ am33_mode = 0;
+ register_name = mn10300_generic_register_name;
+ num_regs = 32;
+ break;
+ case bfd_mach_am33:
+ am33_mode = 1;
+ register_name = am33_register_name;
+ num_regs = 32;
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "mn10300_gdbarch_init: Unknown mn10300 variant");
+ return NULL; /* keep GCC happy. */
+ }
+
+ set_gdbarch_register_size (gdbarch, 4);
+ set_gdbarch_max_register_raw_size (gdbarch, 4);
+ set_gdbarch_register_virtual_type (gdbarch, mn10300_register_virtual_type);
+ set_gdbarch_register_byte (gdbarch, mn10300_register_byte);
+ set_gdbarch_register_virtual_size (gdbarch, mn10300_register_virtual_size);
+ set_gdbarch_register_raw_size (gdbarch, mn10300_register_raw_size);
+ set_gdbarch_call_dummy_p (gdbarch, 1);
+ set_gdbarch_register_name (gdbarch, register_name);
+ set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
+ set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 0);
+ set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
+ set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register);
+ set_gdbarch_push_arguments (gdbarch, mn10300_push_arguments);
+ set_gdbarch_push_return_address (gdbarch, mn10300_push_return_address);
+ set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
+ set_gdbarch_reg_struct_has_addr (gdbarch, mn10300_reg_struct_has_addr);
+ set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
+ set_gdbarch_num_regs (gdbarch, num_regs);
+ set_gdbarch_do_registers_info (gdbarch, mn10300_do_registers_info);
+
+ tdep->am33_mode = am33_mode;
+
+ return gdbarch;
+}
+
void
-_initialize_mn10300_tdep ()
+_initialize_mn10300_tdep (void)
{
/* printf("_initialize_mn10300_tdep\n"); */
tm_print_insn = print_insn_mn10300;
- specify_exec_file_hook (set_machine_hook);
+ register_gdbarch_init (bfd_arch_mn10300, mn10300_gdbarch_init);
}
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