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2003-04-01 Andrew Cagney <cagney@redhat.com>

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* Makefile.in (d10v-tdep.o): Update dependencies.
	* d10v-tdep.c: Include "frame-base.h".
	(d10v_frame_unwind): Make constant.
	(d10v_frame_base_address): New function.
	(d10v_frame_base): New variable.
	(d10v_gdbarch_init): Set frame_base default.
	(struct d10v_unwind_cache): Add the field "prev_sp".  Update
	comment for base.
	(d10v_frame_unwind_cache): Set and use "prev_sp".
	(d10v_frame_this_id): Use the previous frame's inner most stack
	address and this frame's func address for the frame ID.  Use
	frame_id_build.  Don't analyze beyond the current instruction.
This commit is contained in:
Andrew Cagney 2003-04-01 19:55:03 +00:00
parent 6bfb3e36df
commit 270cb5d6bd
3 changed files with 51 additions and 20 deletions
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15
gdb/ChangeLog
View File

@ -1,3 +1,18 @@
2003-04-01 Andrew Cagney <cagney@redhat.com>
* Makefile.in (d10v-tdep.o): Update dependencies.
* d10v-tdep.c: Include "frame-base.h".
(d10v_frame_unwind): Make constant.
(d10v_frame_base_address): New function.
(d10v_frame_base): New variable.
(d10v_gdbarch_init): Set frame_base default.
(struct d10v_unwind_cache): Add the field "prev_sp". Update
comment for base.
(d10v_frame_unwind_cache): Set and use "prev_sp".
(d10v_frame_this_id): Use the previous frame's inner most stack
address and this frame's func address for the frame ID. Use
frame_id_build. Don't analyze beyond the current instruction.
2003-04-01 Andrew Cagney <cagney@redhat.com>
* frame.h (get_frame_locals_address, get_frame_args_address):

10
gdb/Makefile.in
View File

@ -1622,10 +1622,12 @@ cris-tdep.o: cris-tdep.c $(defs_h) $(frame_h) $(symtab_h) $(inferior_h) \
$(gdbtypes_h) $(gdbcore_h) $(gdbcmd_h) $(target_h) $(value_h) \
$(opcode_cris_h) $(arch_utils_h) $(regcache_h) $(symfile_h) \
$(solib_h) $(solib_svr4_h) $(gdb_string_h)
d10v-tdep.o: d10v-tdep.c $(defs_h) $(frame_h) $(frame_unwind_h) $(symtab_h) $(gdbtypes_h) \
$(gdbcmd_h) $(gdbcore_h) $(gdb_string_h) $(value_h) $(inferior_h) $(dis_asm_h) \
$(symfile_h) $(objfiles_h) $(language_h) $(arch_utils_h) $(regcache_h) \
$(remote_h) $(floatformat_h) $(gdb_sim_d10v_h) $(sim_regno_h) $(gdb_assert_h)
d10v-tdep.o: d10v-tdep.c $(defs_h) $(frame_h) $(frame_unwind_h) \
$(frame_base_h) $(symtab_h) $(gdbtypes_h) $(gdbcmd_h) $(gdbcore_h) \
$(gdb_string_h) $(value_h) $(inferior_h) $(dis_asm_h) $(symfile_h) \
$(objfiles_h) $(language_h) $(arch_utils_h) $(regcache_h) \
$(remote_h) $(floatformat_h) $(gdb_sim_d10v_h) $(sim_regno_h) \
$(gdb_assert_h)
dbug-rom.o: dbug-rom.c $(defs_h) $(gdbcore_h) $(target_h) $(monitor_h) \
$(serial_h) $(regcache_h) $(m68k_tdep_h)
dbxread.o: dbxread.c $(defs_h) $(gdb_string_h) $(gdb_obstack_h) \

46
gdb/d10v-tdep.c
View File

@ -25,6 +25,7 @@
#include "defs.h"
#include "frame.h"
#include "frame-unwind.h"
#include "frame-base.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcmd.h"
@ -598,7 +599,10 @@ d10v_skip_prologue (CORE_ADDR pc)
struct d10v_unwind_cache
{
CORE_ADDR return_pc;
/* The frame's base. Used when constructing a frame ID. */
/* The previous frame's inner most stack address. Used as this
frame ID's stack_addr. */
CORE_ADDR prev_sp;
/* The frame's base, optionally used by the high-level debug info. */
CORE_ADDR base;
int size;
CORE_ADDR *saved_regs;
@ -715,10 +719,10 @@ d10v_frame_unwind_cache (struct frame_info *next_frame,
info->return_pc = 0;
info->sp_offset = 0;
pc = get_pc_function_start (frame_pc_unwind (next_frame));
info->uses_frame = 0;
while (1)
for (pc = get_pc_function_start (frame_pc_unwind (next_frame));
pc < frame_pc_unwind (next_frame);
pc += 4)
{
op = (unsigned long) read_memory_integer (pc, 4);
if ((op & 0xC0000000) == 0xC0000000)
@ -765,7 +769,6 @@ d10v_frame_unwind_cache (struct frame_info *next_frame,
|| !prologue_find_regs (info, op2, pc))
break;
}
pc += 4;
}
info->size = -info->sp_offset;
@ -799,14 +802,14 @@ d10v_frame_unwind_cache (struct frame_info *next_frame,
}
info->base = d10v_make_daddr (this_base);
prev_sp = d10v_make_daddr (prev_sp);
info->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 (info->saved_regs[i])
{
info->saved_regs[i] = (prev_sp + info->saved_regs[i]);
info->saved_regs[i] = (info->prev_sp + info->saved_regs[i]);
}
if (info->saved_regs[LR_REGNUM])
@ -825,7 +828,7 @@ d10v_frame_unwind_cache (struct frame_info *next_frame,
/* 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;
info->saved_regs[SP_REGNUM] = info->prev_sp;
return info;
}
@ -1450,9 +1453,6 @@ d10v_frame_this_id (struct frame_info *next_frame,
CORE_ADDR base;
CORE_ADDR pc;
/* Start with a NULL frame ID. */
(*this_id) = null_frame_id;
/* The PC is easy. */
pc = frame_pc_unwind (next_frame);
@ -1464,7 +1464,7 @@ d10v_frame_this_id (struct frame_info *next_frame,
/* Hopefully the prologue analysis either correctly determined the
frame's base (which is the SP from the previous frame), or set
that base to "NULL". */
base = info->base;
base = info->prev_sp;
if (base == STACK_START || base == 0)
return;
@ -1478,8 +1478,7 @@ d10v_frame_this_id (struct frame_info *next_frame,
&& get_frame_id (next_frame).base == base)
return;
this_id->base = base;
this_id->pc = pc;
(*this_id) = frame_id_build (base, pc);
}
static void
@ -1553,8 +1552,7 @@ d10v_frame_prev_register (struct frame_info *next_frame,
}
}
static struct frame_unwind d10v_frame_unwind = {
static const struct frame_unwind d10v_frame_unwind = {
d10v_frame_this_id,
d10v_frame_prev_register
};
@ -1565,6 +1563,21 @@ d10v_frame_p (CORE_ADDR pc)
return &d10v_frame_unwind;
}
static CORE_ADDR
d10v_frame_base_address (struct frame_info *next_frame, void **this_cache)
{
struct d10v_unwind_cache *info
= d10v_frame_unwind_cache (next_frame, this_cache);
return info->base;
}
static const struct frame_base d10v_frame_base = {
&d10v_frame_unwind,
d10v_frame_base_address,
d10v_frame_base_address,
d10v_frame_base_address
};
/* 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
@ -1698,6 +1711,7 @@ d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_print_registers_info (gdbarch, d10v_print_registers_info);
frame_unwind_append_predicate (gdbarch, d10v_frame_p);
frame_base_set_default (gdbarch, &d10v_frame_base);
/* Methods for saving / extracting a dummy frame's ID. */
set_gdbarch_unwind_dummy_id (gdbarch, d10v_unwind_dummy_id);