/* Target-dependent code for OpenBSD/i386.
Copyright (C) 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002, 2003,
- 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+ 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of GDB.
-1
};
-/* Return whether the frame preceding NEXT_FRAME corresponds to an
- OpenBSD sigtramp routine. */
+/* Return whether THIS_FRAME corresponds to an OpenBSD sigtramp
+ routine. */
static int
-i386obsd_sigtramp_p (struct frame_info *next_frame)
+i386obsd_sigtramp_p (struct frame_info *this_frame)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ CORE_ADDR pc = get_frame_pc (this_frame);
CORE_ADDR start_pc = (pc & ~(i386obsd_page_size - 1));
/* The call sequence invoking sigreturn(2). */
const gdb_byte sigreturn[] =
for (offset = i386obsd_sigreturn_offset; *offset != -1; offset++)
{
/* If we can't read the instructions, return zero. */
- if (!safe_frame_unwind_memory (next_frame, start_pc + *offset,
+ if (!safe_frame_unwind_memory (this_frame, start_pc + *offset,
buf, buflen))
return 0;
i386obsd_supply_uthread (struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR sp_addr = addr + I386OBSD_UTHREAD_ESP_OFFSET;
CORE_ADDR sp = 0;
gdb_byte buf[4];
int offset;
/* Fetch stack pointer from thread structure. */
- sp = read_memory_unsigned_integer (sp_addr, 4);
+ sp = read_memory_unsigned_integer (sp_addr, 4, byte_order);
/* Adjust the stack pointer such that it looks as if we just
returned from _thread_machdep_switch. */
offset = i386obsd_uthread_reg_offset[I386_EIP_REGNUM] + 4;
- store_unsigned_integer (buf, 4, sp + offset);
+ store_unsigned_integer (buf, 4, byte_order, sp + offset);
regcache_raw_supply (regcache, I386_ESP_REGNUM, buf);
}
/* Fetch stack pointer from thread structure (if we didn't
do so already). */
if (sp == 0)
- sp = read_memory_unsigned_integer (sp_addr, 4);
+ sp = read_memory_unsigned_integer (sp_addr, 4, byte_order);
/* Read the saved register from the stack frame. */
read_memory (sp + i386obsd_uthread_reg_offset[i], buf, 4);
i386obsd_collect_uthread (const struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR sp_addr = addr + I386OBSD_UTHREAD_ESP_OFFSET;
CORE_ADDR sp = 0;
gdb_byte buf[4];
stored into the thread structure. */
offset = i386obsd_uthread_reg_offset[I386_EIP_REGNUM] + 4;
regcache_raw_collect (regcache, I386_ESP_REGNUM, buf);
- sp = extract_unsigned_integer (buf, 4) - offset;
+ sp = extract_unsigned_integer (buf, 4, byte_order) - offset;
/* Store the stack pointer. */
- write_memory_unsigned_integer (sp_addr, 4, sp);
+ write_memory_unsigned_integer (sp_addr, 4, byte_order, sp);
/* The stack pointer was (potentially) modified. Make sure we
build a proper stack frame. */
/* Fetch stack pointer from thread structure (if we didn't
calculate it already). */
if (sp == 0)
- sp = read_memory_unsigned_integer (sp_addr, 4);
+ sp = read_memory_unsigned_integer (sp_addr, 4, byte_order);
/* Write the register into the stack frame. */
regcache_raw_collect (regcache, i, buf);
};
static struct trad_frame_cache *
-i386obsd_trapframe_cache(struct frame_info *next_frame, void **this_cache)
+i386obsd_trapframe_cache (struct frame_info *this_frame, void **this_cache)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct trad_frame_cache *cache;
CORE_ADDR func, sp, addr;
ULONGEST cs;
if (*this_cache)
return *this_cache;
- cache = trad_frame_cache_zalloc (next_frame);
+ cache = trad_frame_cache_zalloc (this_frame);
*this_cache = cache;
- /* NORMAL_FRAME matches the type in i386obsd_trapframe_unwind, but
- SIGTRAMP_FRAME might be more appropriate. */
- func = frame_func_unwind (next_frame, NORMAL_FRAME);
- sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM);
+ func = get_frame_func (this_frame);
+ sp = get_frame_register_unsigned (this_frame, I386_ESP_REGNUM);
find_pc_partial_function (func, &name, NULL, NULL);
if (name && strncmp (name, "Xintr", 5) == 0)
/* Read %cs from trap frame. */
addr += i386obsd_tf_reg_offset[I386_CS_REGNUM];
- cs = read_memory_unsigned_integer (addr, 4);
+ cs = read_memory_unsigned_integer (addr, 4, byte_order);
if ((cs & I386_SEL_RPL) == I386_SEL_UPL)
{
/* Trap from user space; terminate backtrace. */
- trad_frame_set_id (cache, null_frame_id);
+ trad_frame_set_id (cache, outer_frame_id);
}
else
{
}
static void
-i386obsd_trapframe_this_id (struct frame_info *next_frame,
+i386obsd_trapframe_this_id (struct frame_info *this_frame,
void **this_cache, struct frame_id *this_id)
{
struct trad_frame_cache *cache =
- i386obsd_trapframe_cache (next_frame, this_cache);
+ i386obsd_trapframe_cache (this_frame, this_cache);
trad_frame_get_id (cache, this_id);
}
-static void
-i386obsd_trapframe_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 *
+i386obsd_trapframe_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
struct trad_frame_cache *cache =
- i386obsd_trapframe_cache (next_frame, this_cache);
+ i386obsd_trapframe_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 int
i386obsd_trapframe_sniffer (const struct frame_unwind *self,
- struct frame_info *next_frame,
+ struct frame_info *this_frame,
void **this_prologue_cache)
{
ULONGEST cs;
/* Check Current Privilege Level and bail out if we're not executing
in kernel space. */
- cs = frame_unwind_register_unsigned (next_frame, I386_CS_REGNUM);
+ cs = get_frame_register_unsigned (this_frame, I386_CS_REGNUM);
if ((cs & I386_SEL_RPL) == I386_SEL_UPL)
return 0;
- find_pc_partial_function (frame_pc_unwind (next_frame), &name, NULL, NULL);
+ find_pc_partial_function (get_frame_pc (this_frame), &name, NULL, NULL);
return (name && (strcmp (name, "calltrap") == 0
|| strcmp (name, "syscall1") == 0
|| strncmp (name, "Xintr", 5) == 0