/* Target-dependent code for HP-UX on PA-RISC.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009
+ Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
This file is part of GDB.
just shared library trampolines (import, export). */
static int
-hppa32_hpux_in_solib_call_trampoline (CORE_ADDR pc, char *name)
+hppa32_hpux_in_solib_call_trampoline (struct gdbarch *gdbarch,
+ CORE_ADDR pc, char *name)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct minimal_symbol *minsym;
struct unwind_table_entry *u;
{
unsigned long insn;
- insn = read_memory_integer (addr, 4);
+ insn = read_memory_integer (addr, 4, byte_order);
/* Does it look like a bl? If so then it's the call path, if
we find a bv or be first, then we're on the return path. */
}
static int
-hppa64_hpux_in_solib_call_trampoline (CORE_ADDR pc, char *name)
+hppa64_hpux_in_solib_call_trampoline (struct gdbarch *gdbarch,
+ CORE_ADDR pc, char *name)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
/* PA64 has a completely different stub/trampoline scheme. Is it
better? Maybe. It's certainly harder to determine with any
certainty that we are in a stub because we can not refer to the
- unwinders to help.
+ unwinders to help.
The heuristic is simple. Try to lookup the current PC value in th
minimal symbol table. If that fails, then assume we are not in a
return 0;
/* We might be in a stub. Peek at the instructions. Stubs are 3
- instructions long. */
- insn = read_memory_integer (pc, 4);
+ instructions long. */
+ insn = read_memory_integer (pc, 4, byte_order);
/* Find out where we think we are within the stub. */
if ((insn & 0xffffc00e) == 0x53610000)
return 0;
/* Now verify each insn in the range looks like a stub instruction. */
- insn = read_memory_integer (addr, 4);
+ insn = read_memory_integer (addr, 4, byte_order);
if ((insn & 0xffffc00e) != 0x53610000)
return 0;
/* Now verify each insn in the range looks like a stub instruction. */
- insn = read_memory_integer (addr + 4, 4);
+ insn = read_memory_integer (addr + 4, 4, byte_order);
if ((insn & 0xffffffff) != 0xe820d000)
return 0;
/* Now verify each insn in the range looks like a stub instruction. */
- insn = read_memory_integer (addr + 8, 4);
+ insn = read_memory_integer (addr + 8, 4, byte_order);
if ((insn & 0xffffc00e) != 0x537b0000)
return 0;
just shared library trampolines (import, export). */
static int
-hppa_hpux_in_solib_return_trampoline (CORE_ADDR pc, char *name)
+hppa_hpux_in_solib_return_trampoline (struct gdbarch *gdbarch,
+ CORE_ADDR pc, char *name)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct unwind_table_entry *u;
/* Get the unwind descriptor corresponding to PC, return zero
{
unsigned long insn;
- insn = read_memory_integer (addr, 4);
+ insn = read_memory_integer (addr, 4, byte_order);
/* Does it look like a bl? If so then it's the call path, if
we find a bv or be first, then we're on the return path. */
hppa_hpux_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
{
struct gdbarch *gdbarch = get_frame_arch (frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int word_size = gdbarch_ptr_bit (gdbarch) / 8;
long orig_pc = pc;
long prev_inst, curr_inst, loc;
struct minimal_symbol *msym;
the PLT entry for this function, not the address of the function
itself. Bit 31 has meaning too, but only for MPE. */
if (pc & 0x2)
- pc = (CORE_ADDR) read_memory_integer
- (pc & ~0x3, gdbarch_ptr_bit (gdbarch) / 8);
+ pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, word_size,
+ byte_order);
}
if (pc == hppa_symbol_address("$$dyncall_external"))
{
pc = (CORE_ADDR) get_frame_register_unsigned (frame, 22);
- pc = (CORE_ADDR) read_memory_integer
- (pc & ~0x3, gdbarch_ptr_bit (gdbarch) / 8);
+ pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, word_size, byte_order);
}
else if (pc == hppa_symbol_address("_sr4export"))
pc = (CORE_ADDR) get_frame_register_unsigned (frame, 22);
/* If this isn't a linker stub, then return now. */
/* elz: attention here! (FIXME) because of a compiler/linker
error, some stubs which should have a non zero stub_unwind.stub_type
- have unfortunately a value of zero. So this function would return here
- as if we were not in a trampoline. To fix this, we go look at the partial
+ have unfortunately a value of zero. So this function would return here
+ as if we were not in a trampoline. To fix this, we go look at the partial
symbol information, which reports this guy as a stub.
(FIXME): Unfortunately, we are not that lucky: it turns out that the
- partial symbol information is also wrong sometimes. This is because
+ partial symbol information is also wrong sometimes. This is because
when it is entered (somread.c::som_symtab_read()) it can happen that
if the type of the symbol (from the som) is Entry, and the symbol is
- in a shared library, then it can also be a trampoline. This would
- be OK, except that I believe the way they decide if we are ina shared library
- does not work. SOOOO..., even if we have a regular function w/o trampolines
- its minimal symbol can be assigned type mst_solib_trampoline.
+ in a shared library, then it can also be a trampoline. This would be OK,
+ except that I believe the way they decide if we are ina shared library
+ does not work. SOOOO..., even if we have a regular function w/o
+ trampolines its minimal symbol can be assigned type mst_solib_trampoline.
Also, if we find that the symbol is a real stub, then we fix the unwind
descriptor, and define the stub type to be EXPORT.
- Hopefully this is correct most of the times. */
+ Hopefully this is correct most of the times. */
if (u->stub_unwind.stub_type == 0)
{
/* elz: NOTE (FIXME!) once the problem with the unwind information is fixed
- we can delete all the code which appears between the lines */
+ we can delete all the code which appears between the lines. */
/*--------------------------------------------------------------------------*/
msym = lookup_minimal_symbol_by_pc (pc);
struct minimal_symbol *msymbol;
int function_found = 0;
- /* go look if there is another minimal symbol with the same name as
- this one, but with type mst_text. This would happen if the msym
+ /* Go look if there is another minimal symbol with the same name as
+ this one, but with type mst_text. This would happen if the msym
is an actual trampoline, in which case there would be another
- symbol with the same name corresponding to the real function */
+ symbol with the same name corresponding to the real function. */
ALL_MSYMBOLS (objfile, msymbol)
{
}
if (function_found)
- /* the type of msym is correct (mst_solib_trampoline), but
- the unwind info is wrong, so set it to the correct value */
+ /* The type of msym is correct (mst_solib_trampoline), but
+ the unwind info is wrong, so set it to the correct value. */
u->stub_unwind.stub_type = EXPORT;
else
- /* the stub type info in the unwind is correct (this is not a
+ /* The stub type info in the unwind is correct (this is not a
trampoline), but the msym type information is wrong, it
- should be mst_text. So we need to fix the msym, and also
- get out of this function */
+ should be mst_text. So we need to fix the msym, and also
+ get out of this function. */
{
MSYMBOL_TYPE (msym) = mst_text;
return orig_pc == pc ? 0 : pc & ~0x3;
}
prev_inst = curr_inst;
- curr_inst = read_memory_integer (loc, 4);
+ curr_inst = read_memory_integer (loc, 4, byte_order);
/* Does it look like a branch external using %r1? Then it's the
branch from the stub to the actual function. */
/* Yup. See if the previous instruction loaded
a value into %r1. If so compute and return the jump address. */
if ((prev_inst & 0xffe00000) == 0x20200000)
- return (hppa_extract_21 (prev_inst) + hppa_extract_17 (curr_inst)) & ~0x3;
+ return (hppa_extract_21 (prev_inst)
+ + hppa_extract_17 (curr_inst)) & ~0x3;
else
{
- warning (_("Unable to find ldil X,%%r1 before ble Y(%%sr4,%%r1)."));
+ warning (_("Unable to find ldil X,%%r1 "
+ "before ble Y(%%sr4,%%r1)."));
return orig_pc == pc ? 0 : pc & ~0x3;
}
}
return orig_pc == pc ? 0 : pc & ~0x3;
}
- libsym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (stubsym), NULL, NULL);
+ libsym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (stubsym),
+ NULL, NULL);
if (libsym == NULL)
{
warning (_("Unable to find library symbol for %s."),
{
CORE_ADDR sp;
sp = get_frame_register_unsigned (frame, HPPA_SP_REGNUM);
- return read_memory_integer (sp - 8, 4) & ~0x3;
+ return read_memory_integer (sp - 8, 4, byte_order) & ~0x3;
}
else
{
{
return (read_memory_integer
(get_frame_register_unsigned (frame, HPPA_SP_REGNUM) - 24,
- gdbarch_ptr_bit (gdbarch) / 8)) & ~0x3;
+ word_size, byte_order)) & ~0x3;
}
/* What about be,n 0(sr0,%rp)? It's just another way we return to
mtsp %r1,%sr0 if we want to do sanity checking. */
return (read_memory_integer
(get_frame_register_unsigned (frame, HPPA_SP_REGNUM) - 24,
- gdbarch_ptr_bit (gdbarch) / 8)) & ~0x3;
+ word_size, byte_order)) & ~0x3;
}
/* Haven't found the branch yet, but we're still in the stub.
regcache_cooked_write_unsigned (regcache, HPPA_PCOQ_HEAD_REGNUM, pcoq_tail);
regcache_cooked_write_unsigned (regcache, HPPA_PCSQ_HEAD_REGNUM, pcsq_tail);
- regcache_cooked_write_unsigned (regcache, HPPA_PCOQ_TAIL_REGNUM, pcoq_tail + 4);
+ regcache_cooked_write_unsigned (regcache,
+ HPPA_PCOQ_TAIL_REGNUM, pcoq_tail + 4);
/* We can leave the tail's space the same, since there's no jump. */
}
{
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 hppa_hpux_sigtramp_unwind_cache *info;
unsigned int flag;
CORE_ADDR sp, scptr, off;
off = scptr;
- /* See /usr/include/machine/save_state.h for the structure of the save_state_t
- structure. */
+ /* See /usr/include/machine/save_state.h for the structure of the
+ save_state_t structure. */
- flag = read_memory_unsigned_integer(scptr + HPPA_HPUX_SS_FLAGS_OFFSET, 4);
+ flag = read_memory_unsigned_integer (scptr + HPPA_HPUX_SS_FLAGS_OFFSET,
+ 4, byte_order);
if (!(flag & HPPA_HPUX_SS_WIDEREGS))
{
- /* Narrow registers. */
+ /* Narrow registers. */
off = scptr + HPPA_HPUX_SS_NARROW_OFFSET;
incr = 4;
szoff = 0;
}
else
{
- /* Wide registers. */
+ /* Wide registers. */
off = scptr + HPPA_HPUX_SS_WIDE_OFFSET + 8;
incr = 8;
szoff = (tdep->bytes_per_address == 4 ? 4 : 0);
struct hppa_hpux_sigtramp_unwind_cache *info
= hppa_hpux_sigtramp_frame_unwind_cache (this_frame, this_prologue_cache);
- return hppa_frame_prev_register_helper (this_frame, info->saved_regs, regnum);
+ return hppa_frame_prev_register_helper (this_frame,
+ info->saved_regs, regnum);
}
static int
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 unwind_table_entry *u;
CORE_ADDR pc = get_frame_pc (this_frame);
buf, sizeof buf))
return 0;
- insn = extract_unsigned_integer (buf, sizeof buf);
+ insn = extract_unsigned_integer (buf, sizeof buf, byte_order);
if ((insn & 0xffe0e000) == 0xe8400000)
u = find_unwind_entry(u->region_start + hppa_extract_17 (insn) + 8);
}
hppa32_hpux_find_global_pointer (struct gdbarch *gdbarch,
struct value *function)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR faddr;
faddr = value_as_address (function);
status = target_read_memory (faddr + 4, buf, sizeof (buf));
if (status == 0)
- return extract_unsigned_integer (buf, sizeof (buf));
+ return extract_unsigned_integer (buf, sizeof (buf), byte_order);
}
return gdbarch_tdep (gdbarch)->solib_get_got_by_pc (faddr);
hppa64_hpux_find_global_pointer (struct gdbarch *gdbarch,
struct value *function)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR faddr;
char buf[32];
if (in_opd_section (faddr))
{
target_read_memory (faddr, buf, sizeof (buf));
- return extract_unsigned_integer (&buf[24], 8);
+ return extract_unsigned_integer (&buf[24], 8, byte_order);
}
else
{
};
static CORE_ADDR
-hppa_hpux_search_pattern (CORE_ADDR start, CORE_ADDR end,
+hppa_hpux_search_pattern (struct gdbarch *gdbarch,
+ CORE_ADDR start, CORE_ADDR end,
unsigned int *patterns, int count)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int num_insns = (end - start + HPPA_INSN_SIZE) / HPPA_INSN_SIZE;
unsigned int *insns;
gdb_byte *buf;
read_memory (start, buf, num_insns * HPPA_INSN_SIZE);
for (i = 0; i < num_insns; i++, buf += HPPA_INSN_SIZE)
- insns[i] = extract_unsigned_integer (buf, HPPA_INSN_SIZE);
+ insns[i] = extract_unsigned_integer (buf, HPPA_INSN_SIZE, byte_order);
for (offset = 0; offset <= num_insns - count; offset++)
{
hppa32_hpux_search_dummy_call_sequence (struct gdbarch *gdbarch, CORE_ADDR pc,
int *argreg)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct objfile *obj;
struct obj_section *sec;
struct hppa_objfile_private *priv;
u = find_unwind_entry (rp);
if (u && u->stub_unwind.stub_type == EXPORT)
{
- addr = hppa_hpux_search_pattern (u->region_start, u->region_end,
+ addr = hppa_hpux_search_pattern (gdbarch,
+ u->region_start, u->region_end,
ldsid_pattern,
ARRAY_SIZE (ldsid_pattern));
if (addr)
u = &priv->unwind_info->table[i];
if (u->stub_unwind.stub_type == EXPORT)
{
- addr = hppa_hpux_search_pattern (u->region_start, u->region_end,
+ addr = hppa_hpux_search_pattern (gdbarch,
+ u->region_start, u->region_end,
ldsid_pattern,
ARRAY_SIZE (ldsid_pattern));
if (addr)
find_pc_partial_function (addr, NULL, &start, &end);
if (start != 0 && end != 0)
{
- addr = hppa_hpux_search_pattern (start, end, ldsid_pattern,
+ addr = hppa_hpux_search_pattern (gdbarch, start, end, ldsid_pattern,
ARRAY_SIZE (ldsid_pattern));
if (addr)
goto found_pattern;
found_pattern:
target_read_memory (addr, buf, sizeof (buf));
- insn = extract_unsigned_integer (buf, sizeof (buf));
+ insn = extract_unsigned_integer (buf, sizeof (buf), byte_order);
priv->dummy_call_sequence_addr = addr;
priv->dummy_call_sequence_reg = (insn >> 21) & 0x1f;
hppa64_hpux_search_dummy_call_sequence (struct gdbarch *gdbarch, CORE_ADDR pc,
int *argreg)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct objfile *obj;
struct obj_section *sec;
struct hppa_objfile_private *priv;
{
unsigned int insn;
- insn = extract_unsigned_integer (buf + offset, HPPA_INSN_SIZE);
+ insn = extract_unsigned_integer (buf + offset,
+ HPPA_INSN_SIZE, byte_order);
if (insn == 0xe840d002) /* bve,n (rp) */
{
addr = (end - sizeof (buf)) + offset;
if (sec)
{
/* First try the lowest address in the section; we can use it as long
- as it is "regular" code (i.e. not a stub) */
+ as it is "regular" code (i.e. not a stub). */
u = find_unwind_entry (obj_section_addr (sec));
if (!u || u->stub_unwind.stub_type == 0)
return obj_section_addr (sec);
CORE_ADDR pc, stubaddr;
int argreg = 0;
- pc = read_pc ();
+ pc = regcache_read_pc (regcache);
/* Note: we don't want to pass a function descriptor here; push_dummy_call
fills in the PIC register for us. */
- point the sequence at the trampoline
- set the return address of the trampoline to the current space
(see hppa_hpux_find_dummy_call_bpaddr)
- - set the continuing address of the "dummy code" as the sequence.
-
-*/
+ - set the continuing address of the "dummy code" as the sequence. */
if (IS_32BIT_TARGET (gdbarch))
{
struct regcache *regcache,
int regnum, const void *regs, size_t len)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
const char *proc_info = regs;
const char *save_state = proc_info + 8;
ULONGEST flags;
- flags = extract_unsigned_integer (save_state + HPPA_HPUX_SS_FLAGS_OFFSET, 4);
+ flags = extract_unsigned_integer (save_state + HPPA_HPUX_SS_FLAGS_OFFSET,
+ 4, byte_order);
if (regnum == -1 || regnum == HPPA_FLAGS_REGNUM)
{
- struct gdbarch *arch = get_regcache_arch (regcache);
- size_t size = register_size (arch, HPPA_FLAGS_REGNUM);
+ size_t size = register_size (gdbarch, HPPA_FLAGS_REGNUM);
char buf[8];
- store_unsigned_integer (buf, size, flags);
+ store_unsigned_integer (buf, size, byte_order, flags);
regcache_raw_supply (regcache, HPPA_FLAGS_REGNUM, buf);
}
/* Given the current value of the pc, check to see if it is inside a stub, and
if so, change the value of the pc to point to the caller of the stub.
THIS_FRAME is the current frame in the current list of frames.
- BASE contains to stack frame base of the current frame.
- SAVE_REGS is the register file stored in the frame cache. */
+ BASE contains to stack frame base of the current frame.
+ SAVE_REGS is the register file stored in the frame cache. */
static void
hppa_hpux_unwind_adjust_stub (struct frame_info *this_frame, CORE_ADDR base,
struct trad_frame_saved_reg *saved_regs)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int word_size = gdbarch_ptr_bit (gdbarch) / 8;
struct value *pcoq_head_val;
ULONGEST pcoq_head;
CORE_ADDR stubpc;
HPPA_PCOQ_HEAD_REGNUM);
pcoq_head =
extract_unsigned_integer (value_contents_all (pcoq_head_val),
- register_size (gdbarch, HPPA_PCOQ_HEAD_REGNUM));
+ register_size (gdbarch, HPPA_PCOQ_HEAD_REGNUM),
+ byte_order);
u = find_unwind_entry (pcoq_head);
if (u && u->stub_unwind.stub_type == EXPORT)
{
- stubpc = read_memory_integer (base - 24, gdbarch_ptr_bit (gdbarch) / 8);
+ stubpc = read_memory_integer (base - 24, word_size, byte_order);
trad_frame_set_value (saved_regs, HPPA_PCOQ_HEAD_REGNUM, stubpc);
}
else if (hppa_symbol_address ("__gcc_plt_call")
== get_pc_function_start (pcoq_head))
{
- stubpc = read_memory_integer
- (base - 8, gdbarch_ptr_bit (gdbarch) / 8);
+ stubpc = read_memory_integer (base - 8, word_size, byte_order);
trad_frame_set_value (saved_regs, HPPA_PCOQ_HEAD_REGNUM, stubpc);
}
}
projects / deliverable / binutils-gdb.git / blobdiff