/* Target-dependent code for GDB, the GNU debugger.
- Copyright (C) 1986-2022 Free Software Foundation, Inc.
+ Copyright (C) 1986-2023 Free Software Foundation, Inc.
This file is part of GDB.
#include "user-regs.h"
#include <ctype.h>
#include "elf-bfd.h"
+#include "producer.h"
#include "features/rs6000/powerpc-32l.c"
#include "features/rs6000/powerpc-altivec32l.c"
static enum return_value_convention
ppc_linux_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *valtype, struct regcache *regcache,
- gdb_byte *readbuf, const gdb_byte *writebuf)
+ struct value **read_value, const gdb_byte *writebuf)
{
+ gdb_byte *readbuf = nullptr;
+ if (read_value != nullptr)
+ {
+ *read_value = value::allocate (valtype);
+ readbuf = (*read_value)->contents_raw ().data ();
+ }
+
if ((valtype->code () == TYPE_CODE_STRUCT
|| valtype->code () == TYPE_CODE_UNION)
- && !((TYPE_LENGTH (valtype) == 16 || TYPE_LENGTH (valtype) == 8)
+ && !((valtype->length () == 16 || valtype->length () == 8)
&& valtype->is_vector ()))
return RETURN_VALUE_STRUCT_CONVENTION;
else
stub sequence. */
static CORE_ADDR
-ppc_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
+ppc_skip_trampoline_code (frame_info_ptr frame, CORE_ADDR pc)
{
unsigned int insnbuf[POWERPC32_PLT_CHECK_LEN];
struct gdbarch *gdbarch = get_frame_arch (frame);
}
static void
-ppc_linux_sigtramp_cache (struct frame_info *this_frame,
+ppc_linux_sigtramp_cache (frame_info_ptr this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func, LONGEST offset,
int bias)
static void
ppc32_linux_sigaction_cache_init (const struct tramp_frame *self,
- struct frame_info *this_frame,
+ frame_info_ptr this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
static void
ppc64_linux_sigaction_cache_init (const struct tramp_frame *self,
- struct frame_info *this_frame,
+ frame_info_ptr this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
static void
ppc32_linux_sighandler_cache_init (const struct tramp_frame *self,
- struct frame_info *this_frame,
+ frame_info_ptr this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
static void
ppc64_linux_sighandler_cache_init (const struct tramp_frame *self,
- struct frame_info *this_frame,
+ frame_info_ptr this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
else
result = gdb_sys_fstatat64;
}
+ else if (syscall == 317)
+ result = gdb_sys_pipe2;
else if (syscall == 336)
result = gdb_sys_recv;
else if (syscall == 337)
if (vsx)
features.vsx = true;
- CORE_ADDR hwcap = linux_get_hwcap (target);
+ gdb::optional<gdb::byte_vector> auxv = target_read_auxv_raw (target);
+ CORE_ADDR hwcap = linux_get_hwcap (auxv, target, gdbarch);
features.isa205 = ppc_linux_has_isa205 (hwcap);
static void
ppc_elfv2_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym)
{
+ if ((sym->flags & BSF_SYNTHETIC) != 0)
+ /* ELFv2 synthetic symbols (the PLT stubs and the __glink_PLTresolve
+ trampoline) do not have a local entry point. */
+ return;
+
elf_symbol_type *elf_sym = (elf_symbol_type *)sym;
/* If the symbol is marked as having a local entry point, set a target
record_tdep->size_time_t = 4;
}
else
- internal_error (__FILE__, __LINE__, _("unexpected wordsize"));
+ internal_error (_("unexpected wordsize"));
/* These values are the second argument of system call "sys_fcntl"
and "sys_fcntl64". They are obtained from Linux Kernel source. */
return default_floatformat_for_type (gdbarch, name, len);
}
+static bool
+linux_dwarf2_omit_typedef_p (struct type *target_type,
+ const char *producer, const char *name)
+{
+ int gcc_major, gcc_minor;
+
+ if (producer_is_gcc (producer, &gcc_major, &gcc_minor))
+ {
+ if ((target_type->code () == TYPE_CODE_FLT
+ || target_type->code () == TYPE_CODE_COMPLEX)
+ && (strcmp (name, "long double") == 0
+ || strcmp (name, "complex long double") == 0))
+ {
+ /* IEEE 128-bit floating point and IBM long double are two
+ encodings for 128-bit values. The DWARF debug data can't
+ distinguish between them. See bugzilla:
+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104194
+
+ A GCC hack was introduced to still allow the debugger to identify
+ the case where "long double" uses the IEEE 128-bit floating point
+ format: GCC will emit a bogus DWARF type record pretending that
+ "long double" is a typedef alias for the _Float128 type.
+
+ This hack should not be visible to the GDB user, so we replace
+ this bogus typedef by a normal floating-point type, copying the
+ format information from the target type of the bogus typedef. */
+ return true;
+ }
+ }
+ return false;
+}
+
/* Specify the powerpc64le target triplet.
This can be variations of
ppc64le-{distro}-linux-gcc
/* Support for floating-point data type variants. */
set_gdbarch_floatformat_for_type (gdbarch, ppc_floatformat_for_type);
+ /* Support for replacing typedef record. */
+ set_gdbarch_dwarf2_omit_typedef_p (gdbarch, linux_dwarf2_omit_typedef_p);
+
/* Handle inferior calls during interrupted system calls. */
set_gdbarch_write_pc (gdbarch, ppc_linux_write_pc);
(well ignoring vectors that is). When this was corrected, it
wasn't fixed for GNU/Linux native platform. Use the
PowerOpen struct convention. */
- set_gdbarch_return_value (gdbarch, ppc_linux_return_value);
+ set_gdbarch_return_value_as_value (gdbarch, ppc_linux_return_value);
+ set_gdbarch_return_value (gdbarch, nullptr);
set_gdbarch_memory_remove_breakpoint (gdbarch,
ppc_linux_memory_remove_breakpoint);
projects / binutils-gdb.git / blobdiff