/* Target-dependent code for the ALPHA architecture, for GDB, the GNU Debugger.
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "doublest.h"
compatibility with existing remote alpha targets. */
static const char *
-alpha_register_name (int regno)
+alpha_register_name (struct gdbarch *gdbarch, int regno)
{
static const char * const register_names[] =
{
}
static int
-alpha_cannot_fetch_register (int regno)
+alpha_cannot_fetch_register (struct gdbarch *gdbarch, int regno)
{
return (regno == ALPHA_ZERO_REGNUM
- || strlen (alpha_register_name (regno)) == 0);
+ || strlen (alpha_register_name (gdbarch, regno)) == 0);
}
static int
-alpha_cannot_store_register (int regno)
+alpha_cannot_store_register (struct gdbarch *gdbarch, int regno)
{
return (regno == ALPHA_ZERO_REGNUM
- || strlen (alpha_register_name (regno)) == 0);
+ || strlen (alpha_register_name (gdbarch, regno)) == 0);
}
static struct type *
{
/* Filter out any registers eliminated, but whose regnum is
reserved for backward compatibility, e.g. the vfp. */
- if (gdbarch_register_name (current_gdbarch, regnum) == NULL
- || *gdbarch_register_name (current_gdbarch, regnum) == '\0')
+ if (gdbarch_register_name (gdbarch, regnum) == NULL
+ || *gdbarch_register_name (gdbarch, regnum) == '\0')
return 0;
if (group == all_reggroup)
registers is different. */
static int
-alpha_convert_register_p (int regno, struct type *type)
+alpha_convert_register_p (struct gdbarch *gdbarch, int regno, struct type *type)
{
- return (regno >= ALPHA_FP0_REGNUM && regno < ALPHA_FP0_REGNUM + 31);
+ return (regno >= ALPHA_FP0_REGNUM && regno < ALPHA_FP0_REGNUM + 31
+ && TYPE_LENGTH (type) != 8);
}
static void
case 4:
alpha_sts (out, in);
break;
- case 8:
- memcpy (out, in, 8);
- break;
default:
error (_("Cannot retrieve value from floating point register"));
}
case 4:
alpha_lds (out, in);
break;
- case 8:
- memcpy (out, in, 8);
- break;
default:
error (_("Cannot store value in floating point register"));
}
}
\f
static const gdb_byte *
-alpha_breakpoint_from_pc (CORE_ADDR *pc, int *len)
+alpha_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pc, int *len)
{
static const gdb_byte break_insn[] = { 0x80, 0, 0, 0 }; /* call_pal bpt */
anything which might clobber the registers which are being saved. */
static CORE_ADDR
-alpha_skip_prologue (CORE_ADDR pc)
+alpha_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
unsigned long inst;
int offset;
into the "pc". This routine returns true on success. */
static int
-alpha_get_longjmp_target (CORE_ADDR *pc)
+alpha_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (frame));
CORE_ADDR jb_addr;
gdb_byte raw_buffer[ALPHA_REGISTER_SIZE];
- jb_addr = read_register (ALPHA_A0_REGNUM);
+ jb_addr = get_frame_register_unsigned (frame, ALPHA_A0_REGNUM);
if (target_read_memory (jb_addr + (tdep->jb_pc * tdep->jb_elt_size),
raw_buffer, tdep->jb_elt_size))
info = FRAME_OBSTACK_ZALLOC (struct alpha_sigtramp_unwind_cache);
*this_prologue_cache = info;
- tdep = gdbarch_tdep (current_gdbarch);
+ tdep = gdbarch_tdep (get_frame_arch (next_frame));
info->sigcontext_addr = tdep->sigcontext_addr (next_frame);
return info;
all arithmetic, it doesn't seem worthwhile to cache it. */
static CORE_ADDR
-alpha_sigtramp_register_address (CORE_ADDR sigcontext_addr, int regnum)
+alpha_sigtramp_register_address (struct gdbarch *gdbarch,
+ CORE_ADDR sigcontext_addr, int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (regnum >= 0 && regnum < 32)
return sigcontext_addr + tdep->sc_regs_offset + regnum * 8;
void **this_prologue_cache,
struct frame_id *this_id)
{
+ struct gdbarch *gdbarch = get_frame_arch (next_frame);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
struct alpha_sigtramp_unwind_cache *info
= alpha_sigtramp_frame_unwind_cache (next_frame, this_prologue_cache);
- struct gdbarch_tdep *tdep;
CORE_ADDR stack_addr, code_addr;
/* If the OSABI couldn't locate the sigcontext, give up. */
/* If we have dynamic signal trampolines, find their start.
If we do not, then we must assume there is a symbol record
that can provide the start address. */
- tdep = gdbarch_tdep (current_gdbarch);
if (tdep->dynamic_sigtramp_offset)
{
int offset;
code_addr = frame_func_unwind (next_frame, SIGTRAMP_FRAME);
/* The stack address is trivially read from the sigcontext. */
- stack_addr = alpha_sigtramp_register_address (info->sigcontext_addr,
+ stack_addr = alpha_sigtramp_register_address (gdbarch, info->sigcontext_addr,
ALPHA_SP_REGNUM);
stack_addr = get_frame_memory_unsigned (next_frame, stack_addr,
ALPHA_REGISTER_SIZE);
if (info->sigcontext_addr != 0)
{
/* All integer and fp registers are stored in memory. */
- addr = alpha_sigtramp_register_address (info->sigcontext_addr, regnum);
+ addr = alpha_sigtramp_register_address (get_frame_arch (next_frame),
+ info->sigcontext_addr, regnum);
if (addr != 0)
{
*optimizedp = 0;
static const struct frame_unwind *
alpha_sigtramp_frame_sniffer (struct frame_info *next_frame)
{
+ struct gdbarch *gdbarch = get_frame_arch (next_frame);
CORE_ADDR pc = frame_pc_unwind (next_frame);
char *name;
/* We shouldn't even bother to try if the OSABI didn't register a
sigcontext_addr handler or pc_in_sigtramp hander. */
- if (gdbarch_tdep (current_gdbarch)->sigcontext_addr == NULL)
+ if (gdbarch_tdep (gdbarch)->sigcontext_addr == NULL)
return NULL;
- if (gdbarch_tdep (current_gdbarch)->pc_in_sigtramp == NULL)
+ if (gdbarch_tdep (gdbarch)->pc_in_sigtramp == NULL)
return NULL;
/* Otherwise we should be in a signal frame. */
find_pc_partial_function (pc, &name, NULL, NULL);
- if (gdbarch_tdep (current_gdbarch)->pc_in_sigtramp (pc, name))
+ if (gdbarch_tdep (gdbarch)->pc_in_sigtramp (pc, name))
return &alpha_sigtramp_frame_unwind;
return NULL;
function. But we're guessing anyway... */
static CORE_ADDR
-alpha_heuristic_proc_start (CORE_ADDR pc)
+alpha_heuristic_proc_start (struct gdbarch *gdbarch, CORE_ADDR pc)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
CORE_ADDR last_non_nop = pc;
CORE_ADDR fence = pc - heuristic_fence_post;
CORE_ADDR orig_pc = pc;
void **this_prologue_cache,
CORE_ADDR start_pc)
{
+ struct gdbarch *gdbarch = get_frame_arch (next_frame);
struct alpha_heuristic_unwind_cache *info;
ULONGEST val;
CORE_ADDR limit_pc, cur_pc;
limit_pc = frame_pc_unwind (next_frame);
if (start_pc == 0)
- start_pc = alpha_heuristic_proc_start (limit_pc);
+ start_pc = alpha_heuristic_proc_start (gdbarch, limit_pc);
info->start_pc = start_pc;
frame_reg = ALPHA_SP_REGNUM;
return_reg = ALPHA_RA_REGNUM;
info->return_reg = return_reg;
- frame_unwind_unsigned_register (next_frame, frame_reg, &val);
+ val = frame_unwind_register_unsigned (next_frame, frame_reg);
info->vfp = val + frame_size;
/* Convert offsets to absolute addresses. See above about adding
alpha_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
ULONGEST base;
- frame_unwind_unsigned_register (next_frame, ALPHA_SP_REGNUM, &base);
+ base = frame_unwind_register_unsigned (next_frame, ALPHA_SP_REGNUM);
return frame_id_build (base, frame_pc_unwind (next_frame));
}
alpha_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
ULONGEST pc;
- frame_unwind_unsigned_register (next_frame, ALPHA_PC_REGNUM, &pc);
+ pc = frame_unwind_register_unsigned (next_frame, ALPHA_PC_REGNUM);
return pc;
}
the target of the coming instruction and breakpoint it. */
static CORE_ADDR
-alpha_next_pc (CORE_ADDR pc)
+alpha_next_pc (struct frame_info *frame, CORE_ADDR pc)
{
unsigned int insn;
unsigned int op;
int regno;
int offset;
LONGEST rav;
- gdb_byte reg[ALPHA_REGISTER_SIZE];
insn = alpha_read_insn (pc);
{
/* Jump format: target PC is:
RB & ~3 */
- return (read_register ((insn >> 16) & 0x1f) & ~3);
+ return (get_frame_register_unsigned (frame, (insn >> 16) & 0x1f) & ~3);
}
if ((op & 0x30) == 0x30)
case 0x33: /* FBLE */
case 0x32: /* FBLT */
case 0x35: /* FBNE */
- regno += FP0_REGNUM;
+ regno += gdbarch_fp0_regnum (get_frame_arch (frame));
}
- regcache_cooked_read (current_regcache, regno, reg);
- rav = extract_signed_integer (reg, ALPHA_REGISTER_SIZE);
+ rav = get_frame_register_signed (frame, regno);
switch (op)
{
}
int
-alpha_software_single_step (struct regcache *regcache)
+alpha_software_single_step (struct frame_info *frame)
{
CORE_ADDR pc, next_pc;
- pc = read_pc ();
- next_pc = alpha_next_pc (pc);
+ pc = get_frame_pc (frame);
+ next_pc = alpha_next_pc (frame, pc);
insert_single_step_breakpoint (next_pc);
return 1;
projects / deliverable / binutils-gdb.git / blobdiff