/* Target-dependent code for QNX Neutrino x86.
- Copyright 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
Contributed by QNX Software Systems Ltd.
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "frame.h"
#include "nto-tdep.h"
#include "solib-svr4.h"
+/* Target vector for QNX NTO x86. */
+static struct nto_target_ops i386_nto_target;
+
#ifndef X86_CPU_FXSR
#define X86_CPU_FXSR (1L << 12)
#endif
that is just filler. Don't ask me, ask the kernel guys. */
#define NUM_GPREGS 13
-/* Map a GDB register number to an offset in the reg structure. */
-static int regmap[] = {
- (7 * 4), /* eax */
- (6 * 4), /* ecx */
- (5 * 4), /* edx */
- (4 * 4), /* ebx */
- (11 * 4), /* esp */
- (2 * 4), /* epb */
- (1 * 4), /* esi */
- (0 * 4), /* edi */
- (8 * 4), /* eip */
- (10 * 4), /* eflags */
- (9 * 4), /* cs */
- (12 * 4), /* ss */
- (-1 * 4) /* filler */
+/* Mapping between the general-purpose registers in `struct xxx'
+ format and GDB's register cache layout. */
+
+/* From <x86/context.h>. */
+static int i386nto_gregset_reg_offset[] =
+{
+ 7 * 4, /* %eax */
+ 6 * 4, /* %ecx */
+ 5 * 4, /* %edx */
+ 4 * 4, /* %ebx */
+ 11 * 4, /* %esp */
+ 2 * 4, /* %epb */
+ 1 * 4, /* %esi */
+ 0 * 4, /* %edi */
+ 8 * 4, /* %eip */
+ 10 * 4, /* %eflags */
+ 9 * 4, /* %cs */
+ 12 * 4, /* %ss */
+ -1 /* filler */
};
-static struct nto_target_ops i386_nto_target;
+/* Given a GDB register number REGNUM, return the offset into
+ Neutrino's register structure or -1 if the register is unknown. */
-/* Given a gdb regno, return the offset into Neutrino's register structure
- or -1 if register is unknown. */
static int
-nto_reg_offset (int regno)
+nto_reg_offset (int regnum)
{
- return (regno >= 0 && regno < NUM_GPREGS) ? regmap[regno] : -1;
+ if (regnum >= 0 && regnum < ARRAY_SIZE (i386nto_gregset_reg_offset))
+ return i386nto_gregset_reg_offset[regnum];
+
+ return -1;
}
static void
-i386nto_supply_gregset (char *gpregs)
+i386nto_supply_gregset (struct regcache *regcache, char *gpregs)
{
- unsigned regno;
- int empty = 0;
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- for (regno = 0; regno < I386_NUM_GREGS; regno++)
- {
- int offset = nto_reg_offset (regno);
- if (offset == -1)
- regcache_raw_supply (current_regcache, regno, (char *) &empty);
- else
- regcache_raw_supply (current_regcache, regno, gpregs + offset);
- }
+ if(tdep->gregset == NULL)
+ tdep->gregset = regset_alloc (current_gdbarch, i386_supply_gregset,
+ i386_collect_gregset);
+
+ gdb_assert (tdep->gregset_reg_offset == i386nto_gregset_reg_offset);
+ tdep->gregset->supply_regset (tdep->gregset, regcache, -1,
+ gpregs, NUM_GPREGS * 4);
}
static void
-i386nto_supply_fpregset (char *fpregs)
+i386nto_supply_fpregset (struct regcache *regcache, char *fpregs)
{
if (nto_cpuinfo_valid && nto_cpuinfo_flags | X86_CPU_FXSR)
- i387_supply_fxsave (current_regcache, -1, fpregs);
+ i387_supply_fxsave (regcache, -1, fpregs);
else
- i387_supply_fsave (current_regcache, -1, fpregs);
+ i387_supply_fsave (regcache, -1, fpregs);
}
static void
-i386nto_supply_regset (int regset, char *data)
+i386nto_supply_regset (struct regcache *regcache, int regset, char *data)
{
switch (regset)
{
- case NTO_REG_GENERAL: /* QNX has different ordering of GP regs than GDB. */
- i386nto_supply_gregset (data);
+ case NTO_REG_GENERAL:
+ i386nto_supply_gregset (regcache, data);
break;
case NTO_REG_FLOAT:
- i386nto_supply_fpregset (data);
+ i386nto_supply_fpregset (regcache, data);
break;
}
}
}
static int
-i386nto_regset_fill (int regset, char *data)
+i386nto_regset_fill (const struct regcache *regcache, int regset, char *data)
{
if (regset == NTO_REG_GENERAL)
{
{
int offset = nto_reg_offset (regno);
if (offset != -1)
- regcache_raw_collect (current_regcache, regno, data + offset);
+ regcache_raw_collect (regcache, regno, data + offset);
}
}
else if (regset == NTO_REG_FLOAT)
{
if (nto_cpuinfo_valid && nto_cpuinfo_flags | X86_CPU_FXSR)
- i387_fill_fxsave (data, -1);
+ i387_collect_fxsave (regcache, -1, data);
else
- i387_fill_fsave (data, -1);
+ i387_collect_fsave (regcache, -1, data);
}
else
return -1;
default which is [unfortunately] to decrement the PC. */
set_gdbarch_decr_pc_after_break (gdbarch, 0);
- /* NTO has shared libraries. */
- set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
+ tdep->gregset_reg_offset = i386nto_gregset_reg_offset;
+ tdep->gregset_num_regs = ARRAY_SIZE (i386nto_gregset_reg_offset);
+ tdep->sizeof_gregset = NUM_GPREGS * 4;
tdep->sigtramp_p = i386nto_sigtramp_p;
tdep->sigcontext_addr = i386nto_sigcontext_addr;
projects / deliverable / binutils-gdb.git / blobdiff