/* Target-dependent code for OpenBSD/powerpc.
- Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GDB.
struct regcache *regcache, int regnum,
const void *gregs, size_t len)
{
- /* FIXME: jimb/2004-05-05: Some PPC variants don't have floating
- point registers. Traditionally, GDB's register set has still
- listed the floating point registers for such machines, so this
- code is harmless. However, the new E500 port actually omits the
- floating point registers entirely from the register set --- they
- don't even have register numbers assigned to them.
-
- It's not clear to me how best to update this code, so this assert
- will alert the first person to encounter the OpenBSD/E500
- combination to the problem. */
- gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
-
ppc_supply_gregset (regset, regcache, regnum, gregs, len);
ppc_supply_fpregset (regset, regcache, regnum, gregs, len);
}
const struct regcache *regcache, int regnum,
void *gregs, size_t len)
{
- /* FIXME: jimb/2004-05-05: Some PPC variants don't have floating
- point registers. Traditionally, GDB's register set has still
- listed the floating point registers for such machines, so this
- code is harmless. However, the new E500 port actually omits the
- floating point registers entirely from the register set --- they
- don't even have register numbers assigned to them.
-
- It's not clear to me how best to update this code, so this assert
- will alert the first person to encounter the OpenBSD/E500
- combination to the problem. */
- gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
-
ppc_collect_gregset (regset, regcache, regnum, gregs, len);
ppc_collect_fpregset (regset, regcache, regnum, gregs, len);
}
};
static int
-ppcobsd_sigtramp_p (struct frame_info *next_frame)
+ppcobsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_cache)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ CORE_ADDR pc = get_frame_pc (this_frame);
CORE_ADDR start_pc = (pc & ~(ppcobsd_page_size - 1));
const int *offset;
char *name;
gdb_byte buf[2 * PPC_INSN_SIZE];
unsigned long insn;
- if (!safe_frame_unwind_memory (next_frame, start_pc + *offset,
+ if (!safe_frame_unwind_memory (this_frame, start_pc + *offset,
buf, sizeof buf))
continue;
/* Check for "li r0,SYS_sigreturn". */
- insn = extract_unsigned_integer (buf, PPC_INSN_SIZE);
+ insn = extract_unsigned_integer (buf, PPC_INSN_SIZE, byte_order);
if (insn != 0x38000067)
continue;
/* Check for "sc". */
- insn = extract_unsigned_integer (buf + PPC_INSN_SIZE, PPC_INSN_SIZE);
+ insn = extract_unsigned_integer (buf + PPC_INSN_SIZE,
+ PPC_INSN_SIZE, byte_order);
if (insn != 0x44000002)
continue;
}
static struct trad_frame_cache *
-ppcobsd_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
+ppcobsd_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache)
{
- struct gdbarch *gdbarch = get_frame_arch (next_frame);
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct trad_frame_cache *cache;
CORE_ADDR addr, base, func;
gdb_byte buf[PPC_INSN_SIZE];
if (*this_cache)
return *this_cache;
- cache = trad_frame_cache_zalloc (next_frame);
+ cache = trad_frame_cache_zalloc (this_frame);
*this_cache = cache;
- func = frame_pc_unwind (next_frame);
+ func = get_frame_pc (this_frame);
func &= ~(ppcobsd_page_size - 1);
- if (!safe_frame_unwind_memory (next_frame, func, buf, sizeof buf))
+ if (!safe_frame_unwind_memory (this_frame, func, buf, sizeof buf))
return cache;
/* Calculate the offset where we can find `struct sigcontext'. We
base our calculation on the amount of stack space reserved by the
first instruction of the signal trampoline. */
- insn = extract_unsigned_integer (buf, PPC_INSN_SIZE);
+ insn = extract_unsigned_integer (buf, PPC_INSN_SIZE, byte_order);
sigcontext_offset = (0x10000 - (insn & 0x0000ffff)) + 8;
- base = frame_unwind_register_unsigned (next_frame,
- gdbarch_sp_regnum (current_gdbarch));
+ base = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch));
addr = base + sigcontext_offset + 2 * tdep->wordsize;
for (i = 0; i < ppc_num_gprs; i++, addr += tdep->wordsize)
{
addr += tdep->wordsize;
trad_frame_set_reg_addr (cache, tdep->ppc_ctr_regnum, addr);
addr += tdep->wordsize;
- trad_frame_set_reg_addr (cache, gdbarch_pc_regnum (current_gdbarch), addr);
+ trad_frame_set_reg_addr (cache, gdbarch_pc_regnum (gdbarch), addr);
/* SRR0? */
addr += tdep->wordsize;
}
static void
-ppcobsd_sigtramp_frame_this_id (struct frame_info *next_frame,
+ppcobsd_sigtramp_frame_this_id (struct frame_info *this_frame,
void **this_cache, struct frame_id *this_id)
{
struct trad_frame_cache *cache =
- ppcobsd_sigtramp_frame_cache (next_frame, this_cache);
+ ppcobsd_sigtramp_frame_cache (this_frame, this_cache);
trad_frame_get_id (cache, this_id);
}
-static void
-ppcobsd_sigtramp_frame_prev_register (struct frame_info *next_frame,
- void **this_cache, int regnum,
- int *optimizedp, enum lval_type *lvalp,
- CORE_ADDR *addrp, int *realnump,
- gdb_byte *valuep)
+static struct value *
+ppcobsd_sigtramp_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
struct trad_frame_cache *cache =
- ppcobsd_sigtramp_frame_cache (next_frame, this_cache);
+ ppcobsd_sigtramp_frame_cache (this_frame, this_cache);
- trad_frame_get_register (cache, next_frame, regnum,
- optimizedp, lvalp, addrp, realnump, valuep);
+ return trad_frame_get_register (cache, this_frame, regnum);
}
static const struct frame_unwind ppcobsd_sigtramp_frame_unwind = {
SIGTRAMP_FRAME,
ppcobsd_sigtramp_frame_this_id,
- ppcobsd_sigtramp_frame_prev_register
+ ppcobsd_sigtramp_frame_prev_register,
+ NULL,
+ ppcobsd_sigtramp_frame_sniffer
};
-
-static const struct frame_unwind *
-ppcobsd_sigtramp_frame_sniffer (struct frame_info *next_frame)
-{
- if (ppcobsd_sigtramp_p (next_frame))
- return &ppcobsd_sigtramp_frame_unwind;
-
- return NULL;
-}
\f
static void
set_gdbarch_regset_from_core_section
(gdbarch, ppcobsd_regset_from_core_section);
- frame_unwind_append_sniffer (gdbarch, ppcobsd_sigtramp_frame_sniffer);
+ frame_unwind_append_unwinder (gdbarch, &ppcobsd_sigtramp_frame_unwind);
}
\f
{
/* General-purpose registers. */
ppcobsd_reg_offsets.r0_offset = 0;
+ ppcobsd_reg_offsets.gpr_size = 4;
+ ppcobsd_reg_offsets.xr_size = 4;
ppcobsd_reg_offsets.pc_offset = 384;
ppcobsd_reg_offsets.ps_offset = 388;
ppcobsd_reg_offsets.cr_offset = 392;
/* Floating-point registers. */
ppcobsd_reg_offsets.f0_offset = 0;
ppcobsd_reg_offsets.fpscr_offset = 256;
+ ppcobsd_reg_offsets.fpscr_size = 4;
}
}