#include "defs.h"
#include "frame.h"
#include "trad-frame.h"
#include "regcache.h"
#include "value.h"
struct trad_frame_cache
{
struct frame_info *next_frame;
CORE_ADDR this_base;
struct trad_frame_saved_reg *prev_regs;
struct frame_id this_id;
};
struct trad_frame_cache *
trad_frame_cache_zalloc (struct frame_info *next_frame)
{
struct trad_frame_cache *this_trad_cache;
this_trad_cache = FRAME_OBSTACK_ZALLOC (struct trad_frame_cache);
this_trad_cache->prev_regs = trad_frame_alloc_saved_regs (next_frame);
this_trad_cache->next_frame = next_frame;
return this_trad_cache;
}
struct trad_frame_saved_reg *
trad_frame_alloc_saved_regs (struct frame_info *next_frame)
{
int regnum;
int numregs = NUM_REGS + NUM_PSEUDO_REGS;
struct trad_frame_saved_reg *this_saved_regs
= FRAME_OBSTACK_CALLOC (numregs, struct trad_frame_saved_reg);
for (regnum = 0; regnum < numregs; regnum++)
{
this_saved_regs[regnum].realreg = regnum;
this_saved_regs[regnum].addr = -1;
}
return this_saved_regs;
}
enum { REG_VALUE = -1, REG_UNKNOWN = -2 };
int
trad_frame_value_p (struct trad_frame_saved_reg this_saved_regs[], int regnum)
{
return (this_saved_regs[regnum].realreg == REG_VALUE);
}
int
trad_frame_addr_p (struct trad_frame_saved_reg this_saved_regs[], int regnum)
{
return (this_saved_regs[regnum].realreg >= 0
&& this_saved_regs[regnum].addr != -1);
}
int
trad_frame_realreg_p (struct trad_frame_saved_reg this_saved_regs[],
int regnum)
{
return (this_saved_regs[regnum].realreg >= 0
&& this_saved_regs[regnum].addr == -1);
}
void
trad_frame_set_value (struct trad_frame_saved_reg this_saved_regs[],
int regnum, LONGEST val)
{
this_saved_regs[regnum].realreg = REG_VALUE;
this_saved_regs[regnum].addr = val;
}
void
trad_frame_set_reg_value (struct trad_frame_cache *this_trad_cache,
int regnum, LONGEST val)
{
trad_frame_set_value (this_trad_cache->prev_regs, regnum, val);
}
void
trad_frame_set_reg_realreg (struct trad_frame_cache *this_trad_cache,
int regnum, int realreg)
{
this_trad_cache->prev_regs[regnum].realreg = realreg;
this_trad_cache->prev_regs[regnum].addr = -1;
}
void
trad_frame_set_reg_addr (struct trad_frame_cache *this_trad_cache,
int regnum, CORE_ADDR addr)
{
this_trad_cache->prev_regs[regnum].addr = addr;
}
void
trad_frame_set_unknown (struct trad_frame_saved_reg this_saved_regs[],
int regnum)
{
this_saved_regs[regnum].realreg = REG_UNKNOWN;
this_saved_regs[regnum].addr = -1;
}
void
trad_frame_get_prev_register (struct frame_info *next_frame,
struct trad_frame_saved_reg this_saved_regs[],
int regnum, enum opt_state *optimizedp,
enum lval_type *lvalp, CORE_ADDR *addrp,
int *realregp, gdb_byte *bufferp)
{
struct gdbarch *gdbarch = get_frame_arch (next_frame);
if (trad_frame_addr_p (this_saved_regs, regnum))
{
*optimizedp = opt_okay;
*lvalp = lval_memory;
*addrp = this_saved_regs[regnum].addr;
*realregp = -1;
if (bufferp != NULL)
{
get_frame_memory (next_frame, this_saved_regs[regnum].addr, bufferp,
register_size (gdbarch, regnum));
}
}
else if (trad_frame_realreg_p (this_saved_regs, regnum))
{
*optimizedp = opt_okay;
*lvalp = lval_register;
*addrp = 0;
*realregp = this_saved_regs[regnum].realreg;
if (bufferp)
frame_unwind_register (next_frame, (*realregp), bufferp);
}
else if (trad_frame_value_p (this_saved_regs, regnum))
{
*optimizedp = opt_okay;
*lvalp = not_lval;
*addrp = 0;
*realregp = -1;
if (bufferp != NULL)
store_unsigned_integer (bufferp, register_size (gdbarch, regnum),
this_saved_regs[regnum].addr);
}
else
{
error (_("Register %s not available"),
gdbarch_register_name (gdbarch, regnum));
}
}
void
trad_frame_get_register (struct trad_frame_cache *this_trad_cache,
struct frame_info *next_frame,
int regnum, enum opt_state *optimizedp,
enum lval_type *lvalp, CORE_ADDR *addrp,
int *realregp, gdb_byte *bufferp)
{
trad_frame_get_prev_register (next_frame, this_trad_cache->prev_regs,
regnum, optimizedp, lvalp, addrp, realregp,
bufferp);
}
void
trad_frame_set_id (struct trad_frame_cache *this_trad_cache,
struct frame_id this_id)
{
this_trad_cache->this_id = this_id;
}
void
trad_frame_get_id (struct trad_frame_cache *this_trad_cache,
struct frame_id *this_id)
{
(*this_id) = this_trad_cache->this_id;
}
void
trad_frame_set_this_base (struct trad_frame_cache *this_trad_cache,
CORE_ADDR this_base)
{
this_trad_cache->this_base = this_base;
}
CORE_ADDR
trad_frame_get_this_base (struct trad_frame_cache *this_trad_cache)
{
return this_trad_cache->this_base;
}