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* m32c-tdep.c (m32c_banked_register): New function.

Browse source 
(m32c_banked_read): Use m32c_banked_register function to evaluate
	real register number.
	(m32c_banked_write): Ditto.
	(m32c_virtual_frame_pointer): New function.
	(m32c_gdbarch_init): Add set_gdbarch_virtual_frame_pointer call.
This commit is contained in:
Corinna Vinschen 2006-07-13 12:01:21 +00:00
parent 5bf2ff2f3e
commit 7830cb4f50
2 changed files with 55 additions and 4 deletions
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9
gdb/ChangeLog
View file

@ -1,3 +1,12 @@
2006-07-13 Corinna Vinschen <vinschen@redhat.com>
* m32c-tdep.c (m32c_banked_register): New function.
(m32c_banked_read): Use m32c_banked_register function to evaluate
real register number.
(m32c_banked_write): Ditto.
(m32c_virtual_frame_pointer): New function.
(m32c_gdbarch_init): Add set_gdbarch_virtual_frame_pointer call.
2006-07-13 Nathan Sidwell <nathan@codesourcery.com>
* m68k-tdep.c (m68k_frame_align): New.

50
gdb/m32c-tdep.c
View file

@ -340,6 +340,14 @@ m32c_read_flg (struct regcache *cache)
}
/* Evaluate the real register number of a banked register. */
static struct m32c_reg *
m32c_banked_register (struct m32c_reg *reg, struct regcache *cache)
{
return ((m32c_read_flg (cache) & reg->n) ? reg->ry : reg->rx);
}
/* Move the value of a banked register from CACHE to BUF.
If the value of the 'flg' register in CACHE has any of the bits
masked in REG->n set, then read REG->ry. Otherwise, read
@ -347,8 +355,7 @@ m32c_read_flg (struct regcache *cache)
static void
m32c_banked_read (struct m32c_reg *reg, struct regcache *cache, void *buf)
{
struct m32c_reg *bank_reg
= ((m32c_read_flg (cache) & reg->n) ? reg->ry : reg->rx);
struct m32c_reg *bank_reg = m32c_banked_register (reg, cache);
regcache_raw_read (cache, bank_reg->num, buf);
}
@ -360,8 +367,7 @@ m32c_banked_read (struct m32c_reg *reg, struct regcache *cache, void *buf)
static void
m32c_banked_write (struct m32c_reg *reg, struct regcache *cache, void *buf)
{
struct m32c_reg *bank_reg
= ((m32c_read_flg (cache) & reg->n) ? reg->ry : reg->rx);
struct m32c_reg *bank_reg = m32c_banked_register (reg, cache);
regcache_raw_write (cache, bank_reg->num, (const void *) buf);
}
@ -2475,6 +2481,40 @@ m32c_m16c_pointer_to_address (struct type *type, const gdb_byte *buf)
return ptr;
}
void
m32c_virtual_frame_pointer (CORE_ADDR pc,
int *frame_regnum,
LONGEST *frame_offset)
{
char *name;
CORE_ADDR func_addr, func_end, sal_end;
struct m32c_prologue p;
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
if (!find_pc_partial_function (pc, &name, &func_addr, &func_end))
internal_error (__FILE__, __LINE__, _("No virtual frame pointer available"));
m32c_analyze_prologue (current_gdbarch, func_addr, pc, &p);
switch (p.kind)
{
case prologue_with_frame_ptr:
*frame_regnum = m32c_banked_register (tdep->fb, current_regcache)->num;
*frame_offset = p.frame_ptr_offset;
break;
case prologue_sans_frame_ptr:
*frame_regnum = m32c_banked_register (tdep->sp, current_regcache)->num;
*frame_offset = p.frame_size;
break;
default:
*frame_regnum = m32c_banked_register (tdep->sp, current_regcache)->num;
*frame_offset = 0;
break;
}
/* Sanity check */
if (*frame_regnum > NUM_REGS)
internal_error (__FILE__, __LINE__, _("No virtual frame pointer available"));
}
/* Initialization. */
@ -2539,6 +2579,8 @@ m32c_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* Trampolines. */
set_gdbarch_skip_trampoline_code (arch, m32c_skip_trampoline_code);
set_gdbarch_virtual_frame_pointer (arch, m32c_virtual_frame_pointer);
return arch;
}