/* Target-dependent code for Mitsubishi D10V, for GDB.
- Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software
Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "frame.h"
+#include "frame-unwind.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcmd.h"
#include "gdb/sim-d10v.h"
#include "sim-regno.h"
-struct frame_extra_info
- {
- CORE_ADDR return_pc;
- int frameless;
- int size;
- };
+#include "gdb_assert.h"
struct gdbarch_tdep
{
static void d10v_eva_get_trace_data (void);
-static int prologue_find_regs (unsigned short op, struct frame_info *fi,
- CORE_ADDR addr);
-
-static void d10v_frame_init_saved_regs (struct frame_info *);
-
-static void do_d10v_pop_frame (struct frame_info *fi);
-
-static int
-d10v_frame_chain_valid (CORE_ADDR chain, struct frame_info *frame)
-{
- if (chain != 0 && frame != NULL)
- {
- if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
- return 1; /* Path back from a call dummy must be valid. */
- return ((frame)->pc > IMEM_START
- && !inside_main_func (frame->pc));
- }
- else return 0;
-}
-
static CORE_ADDR
d10v_stack_align (CORE_ADDR len)
{
of data in register N. */
static struct type *
-d10v_register_virtual_type (int reg_nr)
+d10v_register_type (struct gdbarch *gdbarch, int reg_nr)
{
if (reg_nr == PC_REGNUM)
return builtin_type_void_func_ptr;
}
static CORE_ADDR
-d10v_pointer_to_address (struct type *type, void *buf)
+d10v_pointer_to_address (struct type *type, const void *buf)
{
CORE_ADDR addr = extract_address (buf, TYPE_LENGTH (type));
Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */
static void
-d10v_store_return_value (struct type *type, char *valbuf)
+d10v_store_return_value (struct type *type, struct regcache *regcache,
+ const void *valbuf)
{
- char tmp = 0;
- /* Only char return values need to be shifted right within R0. */
+ /* Only char return values need to be shifted right within the first
+ regnum. */
if (TYPE_LENGTH (type) == 1
&& TYPE_CODE (type) == TYPE_CODE_INT)
{
- write_register_bytes (REGISTER_BYTE (RET1_REGNUM),
- &tmp, 1); /* zero the high byte */
- write_register_bytes (REGISTER_BYTE (RET1_REGNUM) + 1,
- valbuf, 1); /* copy the low byte */
+ bfd_byte tmp[2];
+ tmp[1] = *(bfd_byte *)valbuf;
+ regcache_cooked_write (regcache, RET1_REGNUM, tmp);
}
else
- write_register_bytes (REGISTER_BYTE (RET1_REGNUM),
- valbuf,
- TYPE_LENGTH (type));
+ {
+ int reg;
+ /* A structure is never more than 8 bytes long. See
+ use_struct_convention(). */
+ gdb_assert (TYPE_LENGTH (type) <= 8);
+ /* Write out most registers, stop loop before trying to write
+ out any dangling byte at the end of the buffer. */
+ for (reg = 0; (reg * 2) + 1 < TYPE_LENGTH (type); reg++)
+ {
+ regcache_cooked_write (regcache, RET1_REGNUM + reg,
+ (bfd_byte *) valbuf + reg * 2);
+ }
+ /* Write out any dangling byte at the end of the buffer. */
+ if ((reg * 2) + 1 == TYPE_LENGTH (type))
+ regcache_cooked_write_part (regcache, reg, 0, 1,
+ (bfd_byte *) valbuf + reg * 2);
+ }
}
/* Extract from an array REGBUF containing the (raw) register state
as a CORE_ADDR (or an expression that can be used as one). */
static CORE_ADDR
-d10v_extract_struct_value_address (char *regbuf)
+d10v_extract_struct_value_address (struct regcache *regcache)
{
- return (extract_address ((regbuf) + REGISTER_BYTE (ARG1_REGNUM),
- REGISTER_RAW_SIZE (ARG1_REGNUM))
- | DMEM_START);
-}
-
-static CORE_ADDR
-d10v_frame_saved_pc (struct frame_info *frame)
-{
- if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
- return d10v_make_iaddr (generic_read_register_dummy (frame->pc,
- frame->frame,
- PC_REGNUM));
- else
- return ((frame)->extra_info->return_pc);
+ ULONGEST addr;
+ regcache_cooked_read_unsigned (regcache, ARG1_REGNUM, &addr);
+ return (addr | DMEM_START);
}
/* Immediately after a function call, return the saved pc. We can't
| IMEM_START);
}
-/* Discard from the stack the innermost frame, restoring all saved
- registers. */
-
-static void
-d10v_pop_frame (void)
-{
- generic_pop_current_frame (do_d10v_pop_frame);
-}
-
-static void
-do_d10v_pop_frame (struct frame_info *fi)
-{
- CORE_ADDR fp;
- int regnum;
- char raw_buffer[8];
-
- fp = FRAME_FP (fi);
- /* fill out fsr with the address of where each */
- /* register was stored in the frame */
- d10v_frame_init_saved_regs (fi);
-
- /* now update the current registers with the old values */
- for (regnum = A0_REGNUM; regnum < A0_REGNUM + NR_A_REGS; regnum++)
- {
- if (fi->saved_regs[regnum])
- {
- read_memory (fi->saved_regs[regnum], raw_buffer, REGISTER_RAW_SIZE (regnum));
- write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, REGISTER_RAW_SIZE (regnum));
- }
- }
- for (regnum = 0; regnum < SP_REGNUM; regnum++)
- {
- if (fi->saved_regs[regnum])
- {
- write_register (regnum, read_memory_unsigned_integer (fi->saved_regs[regnum], REGISTER_RAW_SIZE (regnum)));
- }
- }
- if (fi->saved_regs[PSW_REGNUM])
- {
- write_register (PSW_REGNUM, read_memory_unsigned_integer (fi->saved_regs[PSW_REGNUM], REGISTER_RAW_SIZE (PSW_REGNUM)));
- }
-
- write_register (PC_REGNUM, read_register (LR_REGNUM));
- write_register (SP_REGNUM, fp + fi->extra_info->size);
- target_store_registers (-1);
- flush_cached_frames ();
-}
-
static int
check_prologue (unsigned short op)
{
return pc;
}
-/* Given a GDB frame, determine the address of the calling function's frame.
- This will be used to create a new GDB frame struct, and then
- INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
- */
-
-static CORE_ADDR
-d10v_frame_chain (struct frame_info *fi)
+struct d10v_unwind_cache
{
- CORE_ADDR addr;
-
- /* A generic call dummy's frame is the same as caller's. */
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- return fi->frame;
-
- d10v_frame_init_saved_regs (fi);
-
-
- if (fi->extra_info->return_pc == IMEM_START
- || inside_entry_file (fi->extra_info->return_pc))
- {
- /* This is meant to halt the backtrace at "_start".
- Make sure we don't halt it at a generic dummy frame. */
- if (!PC_IN_CALL_DUMMY (fi->extra_info->return_pc, 0, 0))
- return (CORE_ADDR) 0;
- }
-
- if (!fi->saved_regs[FP_REGNUM])
- {
- if (!fi->saved_regs[SP_REGNUM]
- || fi->saved_regs[SP_REGNUM] == STACK_START)
- return (CORE_ADDR) 0;
-
- return fi->saved_regs[SP_REGNUM];
- }
-
- addr = read_memory_unsigned_integer (fi->saved_regs[FP_REGNUM],
- REGISTER_RAW_SIZE (FP_REGNUM));
- if (addr == 0)
- return (CORE_ADDR) 0;
-
- return d10v_make_daddr (addr);
-}
-
-static int next_addr, uses_frame;
+ CORE_ADDR return_pc;
+ /* The frame's base. Used when constructing a frame ID. */
+ CORE_ADDR base;
+ int size;
+ CORE_ADDR *saved_regs;
+ /* How far the SP and r11 (FP) have been offset from the start of
+ the stack frame (as defined by the previous frame's stack
+ pointer). */
+ LONGEST sp_offset;
+ LONGEST r11_offset;
+ int uses_frame;
+ void **regs;
+};
static int
-prologue_find_regs (unsigned short op, struct frame_info *fi, CORE_ADDR addr)
+prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op,
+ CORE_ADDR addr)
{
int n;
if ((op & 0x7E1F) == 0x6C1F)
{
n = (op & 0x1E0) >> 5;
- next_addr -= 2;
- fi->saved_regs[n] = next_addr;
+ info->sp_offset -= 2;
+ info->saved_regs[n] = info->sp_offset;
return 1;
}
else if ((op & 0x7E3F) == 0x6E1F)
{
n = (op & 0x1E0) >> 5;
- next_addr -= 4;
- fi->saved_regs[n] = next_addr;
- fi->saved_regs[n + 1] = next_addr + 2;
+ info->sp_offset -= 4;
+ info->saved_regs[n] = info->sp_offset;
+ info->saved_regs[n + 1] = info->sp_offset + 2;
return 1;
}
n = (op & 0x1E) >> 1;
if (n == 0)
n = 16;
- next_addr -= n;
+ info->sp_offset -= n;
return 1;
}
/* mv r11, sp */
if (op == 0x417E)
{
- uses_frame = 1;
+ info->uses_frame = 1;
+ info->r11_offset = info->sp_offset;
+ return 1;
+ }
+
+ /* st rn, @r11 */
+ if ((op & 0x7E1F) == 0x6816)
+ {
+ n = (op & 0x1E0) >> 5;
+ info->saved_regs[n] = info->r11_offset;
return 1;
}
if ((op & 0x7E1F) == 0x681E)
{
n = (op & 0x1E0) >> 5;
- fi->saved_regs[n] = next_addr;
+ info->saved_regs[n] = info->sp_offset;
return 1;
}
if ((op & 0x7E3F) == 0x3A1E)
{
n = (op & 0x1E0) >> 5;
- fi->saved_regs[n] = next_addr;
- fi->saved_regs[n + 1] = next_addr + 2;
+ info->saved_regs[n] = info->sp_offset;
+ info->saved_regs[n + 1] = info->sp_offset + 2;
return 1;
}
in the stack frame. sp is even more special: the address we return
for it IS the sp for the next frame. */
-static void
-d10v_frame_init_saved_regs (struct frame_info *fi)
+struct d10v_unwind_cache *
+d10v_frame_unwind_cache (struct frame_info *fi,
+ void **cache)
{
- CORE_ADDR fp, pc;
+ CORE_ADDR pc;
+ ULONGEST prev_sp;
+ ULONGEST this_base;
unsigned long op;
unsigned short op1, op2;
int i;
+ struct d10v_unwind_cache *info;
+
+ if ((*cache))
+ return (*cache);
+
+ info = FRAME_OBSTACK_ZALLOC (struct d10v_unwind_cache);
+ (*cache) = info;
+ info->saved_regs = frame_obstack_zalloc (SIZEOF_FRAME_SAVED_REGS);
- fp = fi->frame;
- memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS);
- next_addr = 0;
+ info->size = 0;
+ info->return_pc = 0;
+ info->sp_offset = 0;
- pc = get_pc_function_start (fi->pc);
+ pc = get_pc_function_start (get_frame_pc (fi));
- uses_frame = 0;
+ info->uses_frame = 0;
while (1)
{
op = (unsigned long) read_memory_integer (pc, 4);
{
/* add3 sp,sp,n */
short n = op & 0xFFFF;
- next_addr += n;
+ info->sp_offset += n;
}
else if ((op & 0x3F0F0000) == 0x340F0000)
{
/* st rn, @(offset,sp) */
short offset = op & 0xFFFF;
short n = (op >> 20) & 0xF;
- fi->saved_regs[n] = next_addr + offset;
+ info->saved_regs[n] = info->sp_offset + offset;
}
else if ((op & 0x3F1F0000) == 0x350F0000)
{
/* st2w rn, @(offset,sp) */
short offset = op & 0xFFFF;
short n = (op >> 20) & 0xF;
- fi->saved_regs[n] = next_addr + offset;
- fi->saved_regs[n + 1] = next_addr + offset + 2;
+ info->saved_regs[n] = info->sp_offset + offset;
+ info->saved_regs[n + 1] = info->sp_offset + offset + 2;
}
else
break;
op1 = (op & 0x3FFF8000) >> 15;
op2 = op & 0x7FFF;
}
- if (!prologue_find_regs (op1, fi, pc)
- || !prologue_find_regs (op2, fi, pc))
+ if (!prologue_find_regs (info, op1, pc)
+ || !prologue_find_regs (info, op2, pc))
break;
}
pc += 4;
}
- fi->extra_info->size = -next_addr;
+ info->size = -info->sp_offset;
- if (!(fp & 0xffff))
- fp = d10v_read_sp ();
+ /* Compute the frame's base, and the previous frame's SP. */
+ if (info->uses_frame)
+ {
+ /* The SP was moved to the FP. This indicates that a new frame
+ was created. Get THIS frame's FP value by unwinding it from
+ the next frame. */
+ frame_read_unsigned_register (fi, FP_REGNUM, &this_base);
+ /* The FP points at the last saved register. Adjust the FP back
+ to before the first saved register giving the SP. */
+ prev_sp = this_base + info->size;
+ }
+ else if (info->saved_regs[SP_REGNUM])
+ {
+ /* The SP was saved (which is very unusual), the frame base is
+ just the PREV's frame's TOP-OF-STACK. */
+ this_base = read_memory_unsigned_integer (info->saved_regs[SP_REGNUM],
+ register_size (current_gdbarch,
+ SP_REGNUM));
+ prev_sp = this_base;
+ }
+ else
+ {
+ /* Assume that the FP is this frame's SP but with that pushed
+ stack space added back. */
+ frame_read_unsigned_register (fi, SP_REGNUM, &this_base);
+ prev_sp = this_base + info->size;
+ }
+ info->base = d10v_make_daddr (this_base);
+ prev_sp = d10v_make_daddr (prev_sp);
+
+ /* Adjust all the saved registers so that they contain addresses and
+ not offsets. */
for (i = 0; i < NUM_REGS - 1; i++)
- if (fi->saved_regs[i])
+ if (info->saved_regs[i])
{
- fi->saved_regs[i] = fp - (next_addr - fi->saved_regs[i]);
+ info->saved_regs[i] = (prev_sp + info->saved_regs[i]);
}
- if (fi->saved_regs[LR_REGNUM])
+ if (info->saved_regs[LR_REGNUM])
{
CORE_ADDR return_pc
- = read_memory_unsigned_integer (fi->saved_regs[LR_REGNUM],
- REGISTER_RAW_SIZE (LR_REGNUM));
- fi->extra_info->return_pc = d10v_make_iaddr (return_pc);
+ = read_memory_unsigned_integer (info->saved_regs[LR_REGNUM],
+ register_size (current_gdbarch, LR_REGNUM));
+ info->return_pc = d10v_make_iaddr (return_pc);
}
else
{
- fi->extra_info->return_pc = d10v_make_iaddr (read_register (LR_REGNUM));
+ ULONGEST return_pc;
+ frame_read_unsigned_register (fi, LR_REGNUM, &return_pc);
+ info->return_pc = d10v_make_iaddr (return_pc);
}
- /* The SP is not normally (ever?) saved, but check anyway */
- if (!fi->saved_regs[SP_REGNUM])
- {
- /* if the FP was saved, that means the current FP is valid, */
- /* otherwise, it isn't being used, so we use the SP instead */
- if (uses_frame)
- fi->saved_regs[SP_REGNUM]
- = d10v_read_fp () + fi->extra_info->size;
- else
- {
- fi->saved_regs[SP_REGNUM] = fp + fi->extra_info->size;
- fi->extra_info->frameless = 1;
- fi->saved_regs[FP_REGNUM] = 0;
- }
- }
+ /* The SP_REGNUM is special. Instead of the address of the SP, the
+ previous frame's SP value is saved. */
+ info->saved_regs[SP_REGNUM] = prev_sp;
+
+ return info;
}
static void
-d10v_init_extra_frame_info (int fromleaf, struct frame_info *fi)
+d10v_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file,
+ struct frame_info *frame, int regnum, int all)
{
- fi->extra_info = (struct frame_extra_info *)
- frame_obstack_alloc (sizeof (struct frame_extra_info));
- frame_saved_regs_zalloc (fi);
-
- fi->extra_info->frameless = 0;
- fi->extra_info->size = 0;
- fi->extra_info->return_pc = 0;
-
- /* If fi->pc is zero, but this is not the outermost frame,
- then let's snatch the return_pc from the callee, so that
- PC_IN_CALL_DUMMY will work. */
- if (fi->pc == 0 && fi->level != 0 && fi->next != NULL)
- fi->pc = d10v_frame_saved_pc (fi->next);
-
- /* The call dummy doesn't save any registers on the stack, so we can
- return now. */
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ if (regnum >= 0)
{
+ default_print_registers_info (gdbarch, file, frame, regnum, all);
return;
}
- else
- {
- d10v_frame_init_saved_regs (fi);
- }
+
+ {
+ ULONGEST pc, psw, rpt_s, rpt_e, rpt_c;
+ frame_read_unsigned_register (frame, PC_REGNUM, &pc);
+ frame_read_unsigned_register (frame, PSW_REGNUM, &psw);
+ frame_read_unsigned_register (frame, frame_map_name_to_regnum ("rpt_s", -1), &rpt_s);
+ frame_read_unsigned_register (frame, frame_map_name_to_regnum ("rpt_e", -1), &rpt_e);
+ frame_read_unsigned_register (frame, frame_map_name_to_regnum ("rpt_c", -1), &rpt_c);
+ fprintf_filtered (file, "PC=%04lx (0x%lx) PSW=%04lx RPT_S=%04lx RPT_E=%04lx RPT_C=%04lx\n",
+ (long) pc, (long) d10v_make_iaddr (pc), (long) psw,
+ (long) rpt_s, (long) rpt_e, (long) rpt_c);
+ }
+
+ {
+ int group;
+ for (group = 0; group < 16; group += 8)
+ {
+ int r;
+ fprintf_filtered (file, "R%d-R%-2d", group, group + 7);
+ for (r = group; r < group + 8; r++)
+ {
+ ULONGEST tmp;
+ frame_read_unsigned_register (frame, r, &tmp);
+ fprintf_filtered (file, " %04lx", (long) tmp);
+ }
+ fprintf_filtered (file, "\n");
+ }
+ }
+
+ /* Note: The IMAP/DMAP registers don't participate in function
+ calls. Don't bother trying to unwind them. */
+
+ {
+ int a;
+ for (a = 0; a < NR_IMAP_REGS; a++)
+ {
+ if (a > 0)
+ fprintf_filtered (file, " ");
+ fprintf_filtered (file, "IMAP%d %04lx", a, d10v_imap_register (a));
+ }
+ if (NR_DMAP_REGS == 1)
+ /* Registers DMAP0 and DMAP1 are constant. Just return dmap2. */
+ fprintf_filtered (file, " DMAP %04lx\n", d10v_dmap_register (2));
+ else
+ {
+ for (a = 0; a < NR_DMAP_REGS; a++)
+ {
+ fprintf_filtered (file, " DMAP%d %04lx", a, d10v_dmap_register (a));
+ }
+ fprintf_filtered (file, "\n");
+ }
+ }
+
+ {
+ char *num = alloca (max_register_size (gdbarch));
+ int a;
+ fprintf_filtered (file, "A0-A%d", NR_A_REGS - 1);
+ for (a = A0_REGNUM; a < A0_REGNUM + NR_A_REGS; a++)
+ {
+ int i;
+ fprintf_filtered (file, " ");
+ frame_register_read (frame, a, num);
+ for (i = 0; i < max_register_size (current_gdbarch); i++)
+ {
+ fprintf_filtered (file, "%02x", (num[i] & 0xff));
+ }
+ }
+ }
+ fprintf_filtered (file, "\n");
}
static void
show_regs (char *args, int from_tty)
{
- int a;
- printf_filtered ("PC=%04lx (0x%lx) PSW=%04lx RPT_S=%04lx RPT_E=%04lx RPT_C=%04lx\n",
- (long) read_register (PC_REGNUM),
- (long) d10v_make_iaddr (read_register (PC_REGNUM)),
- (long) read_register (PSW_REGNUM),
- (long) read_register (24),
- (long) read_register (25),
- (long) read_register (23));
- printf_filtered ("R0-R7 %04lx %04lx %04lx %04lx %04lx %04lx %04lx %04lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %04lx %04lx %04lx %04lx %04lx %04lx %04lx %04lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
- for (a = 0; a < NR_IMAP_REGS; a++)
- {
- if (a > 0)
- printf_filtered (" ");
- printf_filtered ("IMAP%d %04lx", a, d10v_imap_register (a));
- }
- if (NR_DMAP_REGS == 1)
- printf_filtered (" DMAP %04lx\n", d10v_dmap_register (2));
- else
- {
- for (a = 0; a < NR_DMAP_REGS; a++)
- {
- printf_filtered (" DMAP%d %04lx", a, d10v_dmap_register (a));
- }
- printf_filtered ("\n");
- }
- printf_filtered ("A0-A%d", NR_A_REGS - 1);
- for (a = A0_REGNUM; a < A0_REGNUM + NR_A_REGS; a++)
- {
- char num[MAX_REGISTER_RAW_SIZE];
- int i;
- printf_filtered (" ");
- read_register_gen (a, (char *) &num);
- for (i = 0; i < MAX_REGISTER_RAW_SIZE; i++)
- {
- printf_filtered ("%02x", (num[i] & 0xff));
- }
- }
- printf_filtered ("\n");
+ d10v_print_registers_info (current_gdbarch, gdb_stdout,
+ get_current_frame (), -1, 1);
}
static CORE_ADDR
extract and copy its value into `valbuf'. */
static void
-d10v_extract_return_value (struct type *type, char regbuf[REGISTER_BYTES],
- char *valbuf)
+d10v_extract_return_value (struct type *type, struct regcache *regcache,
+ void *valbuf)
{
int len;
#if 0
printf("RET: TYPE=%d len=%d r%d=0x%x\n", TYPE_CODE (type),
TYPE_LENGTH (type), RET1_REGNUM - R0_REGNUM,
(int) extract_unsigned_integer (regbuf + REGISTER_BYTE(RET1_REGNUM),
- REGISTER_RAW_SIZE (RET1_REGNUM)));
+ register_size (current_gdbarch, RET1_REGNUM)));
#endif
- len = TYPE_LENGTH (type);
- if (len == 1)
+ if (TYPE_LENGTH (type) == 1)
{
- unsigned short c;
-
- c = extract_unsigned_integer (regbuf + REGISTER_BYTE (RET1_REGNUM),
- REGISTER_RAW_SIZE (RET1_REGNUM));
+ ULONGEST c;
+ regcache_cooked_read_unsigned (regcache, RET1_REGNUM, &c);
store_unsigned_integer (valbuf, 1, c);
}
- else if ((len & 1) == 0)
- memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM), len);
else
{
/* For return values of odd size, the first byte is in the
least significant part of the first register. The
- remaining bytes in remaining registers. Interestingly,
- when such values are passed in, the last byte is in the
- most significant byte of that same register - wierd. */
- memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM) + 1, len);
+ remaining bytes in remaining registers. Interestingly, when
+ such values are passed in, the last byte is in the most
+ significant byte of that same register - wierd. */
+ int reg = RET1_REGNUM;
+ int off = 0;
+ if (TYPE_LENGTH (type) & 1)
+ {
+ regcache_cooked_read_part (regcache, RET1_REGNUM, 1, 1,
+ (bfd_byte *)valbuf + off);
+ off++;
+ reg++;
+ }
+ /* Transfer the remaining registers. */
+ for (; off < TYPE_LENGTH (type); reg++, off += 2)
+ {
+ regcache_cooked_read (regcache, RET1_REGNUM + reg,
+ (bfd_byte *) valbuf + off);
+ }
}
}
}
+static CORE_ADDR
+d10v_frame_pc_unwind (struct frame_info *frame,
+ void **cache)
+{
+ struct d10v_unwind_cache *info = d10v_frame_unwind_cache (frame, cache);
+ return info->return_pc;
+}
+
+/* Given a GDB frame, determine the address of the calling function's
+ frame. This will be used to create a new GDB frame struct. */
+
+static void
+d10v_frame_id_unwind (struct frame_info *frame,
+ void **cache,
+ struct frame_id *id)
+{
+ struct d10v_unwind_cache *info = d10v_frame_unwind_cache (frame, cache);
+ CORE_ADDR addr;
+
+ /* Start with a NULL frame ID. */
+ (*id) = null_frame_id;
+
+ if (info->return_pc == IMEM_START
+ || info->return_pc <= IMEM_START
+ || inside_entry_file (info->return_pc))
+ {
+ /* This is meant to halt the backtrace at "_start".
+ Make sure we don't halt it at a generic dummy frame. */
+ return;
+ }
+
+ if (!info->saved_regs[FP_REGNUM])
+ {
+ if (!info->saved_regs[SP_REGNUM]
+ || info->saved_regs[SP_REGNUM] == STACK_START)
+ return;
+
+ id->base = info->saved_regs[SP_REGNUM];
+ id->pc = info->return_pc;
+ }
+
+ addr = read_memory_unsigned_integer (info->saved_regs[FP_REGNUM],
+ register_size (current_gdbarch, FP_REGNUM));
+ if (addr == 0)
+ return;
+
+ id->base = d10v_make_daddr (addr);
+ id->pc = info->return_pc;
+}
+
+static void
+saved_regs_unwinder (struct frame_info *frame,
+ CORE_ADDR *saved_regs,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnump, void *bufferp)
+{
+ /* If we're using generic dummy frames, we'd better not be in a call
+ dummy. (generic_call_dummy_register_unwind ought to have been called
+ instead.) */
+ gdb_assert (!(DEPRECATED_USE_GENERIC_DUMMY_FRAMES
+ && (get_frame_type (frame) == DUMMY_FRAME)));
+
+ if (saved_regs[regnum] != 0)
+ {
+ if (regnum == SP_REGNUM)
+ {
+ /* SP register treated specially. */
+ *optimizedp = 0;
+ *lvalp = not_lval;
+ *addrp = 0;
+ *realnump = -1;
+ if (bufferp != NULL)
+ store_address (bufferp, register_size (current_gdbarch, regnum),
+ saved_regs[regnum]);
+ }
+ else
+ {
+ /* Any other register is saved in memory, fetch it but cache
+ a local copy of its value. */
+ *optimizedp = 0;
+ *lvalp = lval_memory;
+ *addrp = saved_regs[regnum];
+ *realnump = -1;
+ if (bufferp != NULL)
+ {
+ /* Read the value in from memory. */
+ read_memory (saved_regs[regnum], bufferp,
+ register_size (current_gdbarch, regnum));
+ }
+ }
+ return;
+ }
+
+ /* No luck, assume this and the next frame have the same register
+ value. If a value is needed, pass the request on down the chain;
+ otherwise just return an indication that the value is in the same
+ register as the next frame. */
+ frame_register (frame, regnum, optimizedp, lvalp, addrp,
+ realnump, bufferp);
+}
+
+
+static void
+d10v_frame_register_unwind (struct frame_info *frame,
+ void **cache,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnump, void *bufferp)
+{
+ struct d10v_unwind_cache *info = d10v_frame_unwind_cache (frame, cache);
+ saved_regs_unwinder (frame, info->saved_regs, regnum, optimizedp,
+ lvalp, addrp, realnump, bufferp);
+}
+
+
+static void
+d10v_frame_pop (struct frame_info *fi, void **unwind_cache,
+ struct regcache *regcache)
+{
+ struct d10v_unwind_cache *info = d10v_frame_unwind_cache (fi, unwind_cache);
+ CORE_ADDR fp;
+ int regnum;
+ char raw_buffer[8];
+
+ fp = get_frame_base (fi);
+
+ /* now update the current registers with the old values */
+ for (regnum = A0_REGNUM; regnum < A0_REGNUM + NR_A_REGS; regnum++)
+ {
+ frame_unwind_register (fi, regnum, raw_buffer);
+ regcache_cooked_write (regcache, regnum, raw_buffer);
+ }
+ for (regnum = 0; regnum < SP_REGNUM; regnum++)
+ {
+ frame_unwind_register (fi, regnum, raw_buffer);
+ regcache_cooked_write (regcache, regnum, raw_buffer);
+ }
+ frame_unwind_register (fi, PSW_REGNUM, raw_buffer);
+ regcache_cooked_write (regcache, PSW_REGNUM, raw_buffer);
+
+ frame_unwind_register (fi, LR_REGNUM, raw_buffer);
+ regcache_cooked_write (regcache, PC_REGNUM, raw_buffer);
+
+ store_unsigned_integer (raw_buffer,
+ register_size (current_gdbarch, SP_REGNUM),
+ fp + info->size);
+ regcache_cooked_write (regcache, SP_REGNUM, raw_buffer);
+
+ target_store_registers (-1);
+ flush_cached_frames ();
+}
+
+static struct frame_unwind d10v_frame_unwind = {
+ d10v_frame_pop,
+ d10v_frame_pc_unwind,
+ d10v_frame_id_unwind,
+ d10v_frame_register_unwind
+};
+
+const struct frame_unwind *
+d10v_frame_p (CORE_ADDR pc)
+{
+ return &d10v_frame_unwind;
+}
+
+/* Assuming NEXT_FRAME->prev is a dummy, return the frame ID of that
+ dummy frame. The frame ID's base needs to match the TOS value
+ saved by save_dummy_frame_tos(), and the PC match the dummy frame's
+ breakpoint. */
+
+static struct frame_id
+d10v_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+ ULONGEST base;
+ struct frame_id id;
+ id.pc = frame_pc_unwind (next_frame);
+ frame_unwind_unsigned_register (next_frame, SP_REGNUM, &base);
+ id.base = d10v_make_daddr (base);
+ return id;
+}
+
static gdbarch_init_ftype d10v_gdbarch_init;
static struct gdbarch *
set_gdbarch_register_bytes (gdbarch, (d10v_num_regs - 2) * 2 + 16);
set_gdbarch_register_byte (gdbarch, d10v_register_byte);
set_gdbarch_register_raw_size (gdbarch, d10v_register_raw_size);
- set_gdbarch_max_register_raw_size (gdbarch, 8);
set_gdbarch_register_virtual_size (gdbarch, generic_register_size);
- set_gdbarch_max_register_virtual_size (gdbarch, 8);
- set_gdbarch_register_virtual_type (gdbarch, d10v_register_virtual_type);
+ set_gdbarch_register_type (gdbarch, d10v_register_type);
set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 32);
"d10v_gdbarch_init: bad byte order for float format");
}
- set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
set_gdbarch_call_dummy_length (gdbarch, 0);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
- set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
set_gdbarch_call_dummy_words (gdbarch, d10v_call_dummy_words);
set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (d10v_call_dummy_words));
set_gdbarch_call_dummy_p (gdbarch, 1);
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
- set_gdbarch_get_saved_register (gdbarch, generic_unwind_get_saved_register);
set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
- set_gdbarch_deprecated_extract_return_value (gdbarch, d10v_extract_return_value);
+ set_gdbarch_extract_return_value (gdbarch, d10v_extract_return_value);
set_gdbarch_push_arguments (gdbarch, d10v_push_arguments);
- set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
set_gdbarch_push_return_address (gdbarch, d10v_push_return_address);
set_gdbarch_store_struct_return (gdbarch, d10v_store_struct_return);
set_gdbarch_store_return_value (gdbarch, d10v_store_return_value);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, d10v_extract_struct_value_address);
+ set_gdbarch_extract_struct_value_address (gdbarch, d10v_extract_struct_value_address);
set_gdbarch_use_struct_convention (gdbarch, d10v_use_struct_convention);
- set_gdbarch_frame_init_saved_regs (gdbarch, d10v_frame_init_saved_regs);
- set_gdbarch_init_extra_frame_info (gdbarch, d10v_init_extra_frame_info);
-
- set_gdbarch_pop_frame (gdbarch, d10v_pop_frame);
-
set_gdbarch_skip_prologue (gdbarch, d10v_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_decr_pc_after_break (gdbarch, 4);
set_gdbarch_frame_args_skip (gdbarch, 0);
set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue);
- set_gdbarch_frame_chain (gdbarch, d10v_frame_chain);
- set_gdbarch_frame_chain_valid (gdbarch, d10v_frame_chain_valid);
- set_gdbarch_frame_saved_pc (gdbarch, d10v_frame_saved_pc);
- set_gdbarch_frame_args_address (gdbarch, default_frame_address);
- set_gdbarch_frame_locals_address (gdbarch, default_frame_address);
+
set_gdbarch_saved_pc_after_call (gdbarch, d10v_saved_pc_after_call);
set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
set_gdbarch_stack_align (gdbarch, d10v_stack_align);
set_gdbarch_register_sim_regno (gdbarch, d10v_register_sim_regno);
set_gdbarch_extra_stack_alignment_needed (gdbarch, 0);
+ set_gdbarch_print_registers_info (gdbarch, d10v_print_registers_info);
+
+ frame_unwind_append_predicate (gdbarch, d10v_frame_p);
+
+ /* Methods for saving / extracting a dummy frame's ID. */
+ set_gdbarch_unwind_dummy_id (gdbarch, d10v_unwind_dummy_id);
+ set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
+
return gdbarch;
}
target_resume_hook = d10v_eva_prepare_to_trace;
target_wait_loop_hook = d10v_eva_get_trace_data;
- add_com ("regs", class_vars, show_regs, "Print all registers");
+ deprecate_cmd (add_com ("regs", class_vars, show_regs, "Print all registers"),
+ "info registers");
add_com ("itrace", class_support, trace_command,
"Enable tracing of instruction execution.");
projects / binutils.git / blobdiff