return register_name (reg, regs, sizeof regs);
}
-CORE_ADDR
+static CORE_ADDR
mn10300_saved_pc_after_call (struct frame_info *fi)
{
return read_memory_integer (read_register (SP_REGNUM), 4);
}
-void
+static void
mn10300_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_PTR)
memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (type));
}
-CORE_ADDR
+static CORE_ADDR
mn10300_extract_struct_value_address (char *regbuf)
{
return extract_address (regbuf + REGISTER_BYTE (4),
REGISTER_RAW_SIZE (4));
}
-void
+static void
mn10300_store_return_value (struct type *type, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_PTR)
/* Should call_function allocate stack space for a struct return? */
-int
+static int
mn10300_use_struct_convention (int gcc_p, struct type *type)
{
return (TYPE_NFIELDS (type) > 1 || TYPE_LENGTH (type) > 8);
so we need a single byte breakpoint. Matsushita hasn't defined
one, so we defined it ourselves. */
-unsigned char *
+static unsigned char *
mn10300_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size)
{
static char breakpoint[] =
if (fi == NULL || movm_args == 0)
return;
- if (movm_args & 0x10)
+ if (movm_args & movm_other_bit)
+ {
+ /* The `other' bit leaves a blank area of four bytes at the
+ beginning of its block of saved registers, making it 32 bytes
+ long in total. */
+ fi->saved_regs[LAR_REGNUM] = fi->frame + offset + 4;
+ fi->saved_regs[LIR_REGNUM] = fi->frame + offset + 8;
+ fi->saved_regs[MDR_REGNUM] = fi->frame + offset + 12;
+ fi->saved_regs[A0_REGNUM + 1] = fi->frame + offset + 16;
+ fi->saved_regs[A0_REGNUM] = fi->frame + offset + 20;
+ fi->saved_regs[D0_REGNUM + 1] = fi->frame + offset + 24;
+ fi->saved_regs[D0_REGNUM] = fi->frame + offset + 28;
+ offset += 32;
+ }
+ if (movm_args & movm_a3_bit)
{
fi->saved_regs[A3_REGNUM] = fi->frame + offset;
offset += 4;
}
- if (movm_args & 0x20)
+ if (movm_args & movm_a2_bit)
{
fi->saved_regs[A2_REGNUM] = fi->frame + offset;
offset += 4;
}
- if (movm_args & 0x40)
+ if (movm_args & movm_d3_bit)
{
fi->saved_regs[D3_REGNUM] = fi->frame + offset;
offset += 4;
}
- if (movm_args & 0x80)
+ if (movm_args & movm_d2_bit)
{
fi->saved_regs[D2_REGNUM] = fi->frame + offset;
offset += 4;
}
- if (AM33_MODE && movm_args & 0x02)
+ if (AM33_MODE)
{
- 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;
+ if (movm_args & movm_exother_bit)
+ {
+ fi->saved_regs[MCVF_REGNUM] = fi->frame + offset;
+ fi->saved_regs[MCRL_REGNUM] = fi->frame + offset + 4;
+ fi->saved_regs[MCRH_REGNUM] = fi->frame + offset + 8;
+ fi->saved_regs[MDRQ_REGNUM] = fi->frame + offset + 12;
+ fi->saved_regs[E0_REGNUM + 1] = fi->frame + offset + 16;
+ fi->saved_regs[E0_REGNUM + 0] = fi->frame + offset + 20;
+ offset += 24;
+ }
+ if (movm_args & movm_exreg1_bit)
+ {
+ fi->saved_regs[E0_REGNUM + 7] = fi->frame + offset;
+ fi->saved_regs[E0_REGNUM + 6] = fi->frame + offset + 4;
+ fi->saved_regs[E0_REGNUM + 5] = fi->frame + offset + 8;
+ fi->saved_regs[E0_REGNUM + 4] = fi->frame + offset + 12;
+ offset += 16;
+ }
+ if (movm_args & movm_exreg0_bit)
+ {
+ fi->saved_regs[E0_REGNUM + 3] = fi->frame + offset;
+ fi->saved_regs[E0_REGNUM + 2] = fi->frame + offset + 4;
+ offset += 8;
+ }
}
}
return addr;
}
+
+/* Function: saved_regs_size
+ Return the size in bytes of the register save area, based on the
+ saved_regs array in FI. */
+static int
+saved_regs_size (struct frame_info *fi)
+{
+ int adjust = 0;
+ int i;
+
+ /* Reserve four bytes for every register saved. */
+ for (i = 0; i < NUM_REGS; i++)
+ if (fi->saved_regs[i])
+ adjust += 4;
+
+ /* If we saved LIR, then it's most likely we used a `movm'
+ instruction with the `other' bit set, in which case the SP is
+ decremented by an extra four bytes, "to simplify calculation
+ of the transfer area", according to the processor manual. */
+ if (fi->saved_regs[LIR_REGNUM])
+ adjust += 4;
+
+ return adjust;
+}
+
+
/* Function: frame_chain
Figure out and return the caller's frame pointer given current
frame_info struct.
We don't handle dummy frames yet but we would probably just return the
stack pointer that was in use at the time the function call was made? */
-CORE_ADDR
+static CORE_ADDR
mn10300_frame_chain (struct frame_info *fi)
{
struct frame_info *dummy;
}
else
{
- int adjust = 0;
-
- adjust += (fi->saved_regs[D2_REGNUM] ? 4 : 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);
- }
+ int adjust = saved_regs_size (fi);
/* Our caller does not have a frame pointer. So his frame starts
at the base of our frame (fi->frame) + register save space
/* Function: skip_prologue
Return the address of the first inst past the prologue of the function. */
-CORE_ADDR
+static CORE_ADDR
mn10300_skip_prologue (CORE_ADDR pc)
{
/* We used to check the debug symbols, but that can lose if
return mn10300_analyze_prologue (NULL, pc);
}
-
-/* Function: pop_frame
- This routine gets called when either the user uses the `return'
- command, or the call dummy breakpoint gets hit. */
-
-void
-mn10300_pop_frame (struct frame_info *frame)
+/* generic_pop_current_frame calls this function if the current
+ frame isn't a dummy frame. */
+static void
+mn10300_pop_frame_regular (struct frame_info *frame)
{
int regnum;
- if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
- generic_pop_dummy_frame ();
- else
- {
- write_register (PC_REGNUM, FRAME_SAVED_PC (frame));
+ write_register (PC_REGNUM, FRAME_SAVED_PC (frame));
- /* Restore any saved registers. */
- for (regnum = 0; regnum < NUM_REGS; regnum++)
- if (frame->saved_regs[regnum] != 0)
- {
- ULONGEST value;
+ /* Restore any saved registers. */
+ for (regnum = 0; regnum < NUM_REGS; regnum++)
+ if (frame->saved_regs[regnum] != 0)
+ {
+ ULONGEST value;
- value = read_memory_unsigned_integer (frame->saved_regs[regnum],
- REGISTER_RAW_SIZE (regnum));
- write_register (regnum, value);
- }
+ value = read_memory_unsigned_integer (frame->saved_regs[regnum],
+ REGISTER_RAW_SIZE (regnum));
+ write_register (regnum, value);
+ }
- /* Actually cut back the stack. */
- write_register (SP_REGNUM, FRAME_FP (frame));
+ /* Actually cut back the stack. */
+ write_register (SP_REGNUM, FRAME_FP (frame));
- /* Don't we need to set the PC?!? XXX FIXME. */
- }
+ /* Don't we need to set the PC?!? XXX FIXME. */
+}
+
+/* Function: pop_frame
+ This routine gets called when either the user uses the `return'
+ command, or the call dummy breakpoint gets hit. */
+static void
+mn10300_pop_frame (void)
+{
+ /* This function checks for and handles generic dummy frames, and
+ calls back to our function for ordinary frames. */
+ generic_pop_current_frame (mn10300_pop_frame_regular);
/* Throw away any cached frame information. */
flush_cached_frames ();
Setup arguments for a call to the target. Arguments go in
order on the stack. */
-CORE_ADDR
+static CORE_ADDR
mn10300_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
Set up the return address for the inferior function call.
Needed for targets where we don't actually execute a JSR/BSR instruction */
-CORE_ADDR
+static CORE_ADDR
mn10300_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
unsigned char buf[4];
Store the structure value return address for an inferior function
call. */
-void
+static void
mn10300_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
/* The structure return address is passed as the first argument. */
instead of RP, because that's where "caller" of the dummy-frame
will be found. */
-CORE_ADDR
+static CORE_ADDR
mn10300_frame_saved_pc (struct frame_info *fi)
{
- int adjust = 0;
-
- adjust += (fi->saved_regs[D2_REGNUM] ? 4 : 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);
- }
+ int adjust = saved_regs_size (fi);
return (read_memory_integer (fi->frame + adjust, REGISTER_SIZE));
}
First, during normal backtracing, second, while figuring out the frame
pointer just prior to calling the target function (see run_stack_dummy). */
-void
+static void
mn10300_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
if (fi->next)
/* This function's job is handled by init_extra_frame_info. */
-void
+static void
mn10300_frame_init_saved_regs (struct frame_info *frame)
{
}
return 4;
}
+/* If DWARF2 is a register number appearing in Dwarf2 debug info, then
+ mn10300_dwarf2_reg_to_regnum (DWARF2) is the corresponding GDB
+ register number. Why don't Dwarf2 and GDB use the same numbering?
+ Who knows? But since people have object files lying around with
+ the existing Dwarf2 numbering, and other people have written stubs
+ to work with the existing GDB, neither of them can change. So we
+ just have to cope. */
+static int
+mn10300_dwarf2_reg_to_regnum (int dwarf2)
+{
+ /* This table is supposed to be shaped like the REGISTER_NAMES
+ initializer in gcc/config/mn10300/mn10300.h. Registers which
+ appear in GCC's numbering, but have no counterpart in GDB's
+ world, are marked with a -1. */
+ static int dwarf2_to_gdb[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, -1, 8,
+ 15, 16, 17, 18, 19, 20, 21, 22
+ };
+ int gdb;
+
+ if (dwarf2 < 0
+ || dwarf2 >= (sizeof (dwarf2_to_gdb) / sizeof (dwarf2_to_gdb[0]))
+ || dwarf2_to_gdb[dwarf2] == -1)
+ internal_error (__FILE__, __LINE__,
+ "bogus register number in debug info: %d", dwarf2);
+
+ return dwarf2_to_gdb[dwarf2];
+}
+
static void
mn10300_print_register (const char *name, int regnum, int reg_width)
{
return NULL; /* keep GCC happy. */
}
+ /* Registers. */
+ set_gdbarch_num_regs (gdbarch, num_regs);
+ set_gdbarch_register_name (gdbarch, register_name);
set_gdbarch_register_size (gdbarch, 4);
+ set_gdbarch_register_bytes (gdbarch,
+ num_regs * gdbarch_register_size (gdbarch));
set_gdbarch_max_register_raw_size (gdbarch, 4);
- set_gdbarch_register_virtual_type (gdbarch, mn10300_register_virtual_type);
+ set_gdbarch_register_raw_size (gdbarch, mn10300_register_raw_size);
set_gdbarch_register_byte (gdbarch, mn10300_register_byte);
+ set_gdbarch_max_register_virtual_size (gdbarch, 4);
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_register_virtual_type (gdbarch, mn10300_register_virtual_type);
+ set_gdbarch_dwarf2_reg_to_regnum (gdbarch, mn10300_dwarf2_reg_to_regnum);
set_gdbarch_do_registers_info (gdbarch, mn10300_do_registers_info);
-
set_gdbarch_fp_regnum (gdbarch, 31);
- set_gdbarch_max_register_virtual_size (gdbarch, 4);
- set_gdbarch_register_bytes (gdbarch,
- num_regs * gdbarch_register_size (gdbarch));
+
+ /* Breakpoints. */
set_gdbarch_breakpoint_from_pc (gdbarch, mn10300_breakpoint_from_pc);
set_gdbarch_function_start_offset (gdbarch, 0);
set_gdbarch_decr_pc_after_break (gdbarch, 0);
+
+ /* Stack unwinding. */
+ set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register);
+ set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
set_gdbarch_saved_pc_after_call (gdbarch, mn10300_saved_pc_after_call);
(gdbarch, mn10300_extract_struct_value_address);
set_gdbarch_store_return_value (gdbarch, mn10300_store_return_value);
set_gdbarch_store_struct_return (gdbarch, mn10300_store_struct_return);
+ set_gdbarch_pop_frame (gdbarch, mn10300_pop_frame);
set_gdbarch_skip_prologue (gdbarch, mn10300_skip_prologue);
set_gdbarch_frame_args_skip (gdbarch, 0);
set_gdbarch_frame_args_address (gdbarch, default_frame_address);
set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
/* That's right, we're using the stack pointer as our frame pointer. */
set_gdbarch_read_fp (gdbarch, generic_target_read_sp);
+
+ /* Calling functions in the inferior from GDB. */
+ set_gdbarch_call_dummy_p (gdbarch, 1);
+ set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
+ set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
+ set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_words (gdbarch, mn10300_call_dummy_words);
set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point);
+ set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
+ set_gdbarch_push_arguments (gdbarch, mn10300_push_arguments);
+ set_gdbarch_reg_struct_has_addr (gdbarch, mn10300_reg_struct_has_addr);
+ set_gdbarch_push_return_address (gdbarch, mn10300_push_return_address);
+ set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
set_gdbarch_use_struct_convention (gdbarch, mn10300_use_struct_convention);
tdep->am33_mode = am33_mode;
projects / binutils.git / blobdiff