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binutils-gdb/gdb/loongarch-linux-tdep.c
Simon Marchi a2e3cce344 gdb/solib: C++ify solib_ops 
Convert solib_ops into an abstract base class (with abstract methods,
some of them with default implementations) and convert all the existing
solib_ops instances to solib_ops derived classes / implementations.

Prior to this patch, solib_ops is a structure holding function pointers,
of which there are only a handful of global instances (in the
`solib-*.c` files).  When passing an `solib_ops *` around, it's a
pointer to one of these instances.  After this patch, there are no more
global solib_ops instances.  Instances are created as needed and stored
in struct program_space.  These instances could eventually be made to
contain the program space-specific data, which is currently kept in
per-program space registries (I have some pending patches for that).

Prior to this patch, `gdbarch_so_ops` is a gdbarch method that returns a
pointer to the appropriate solib_ops implementation for the gdbarch.
This is replaced with the `gdbarch_make_solib_ops` method, which returns
a new instance of the appropriate solib_ops implementation for this
gdbarch.  This requires introducing some factory functions for the
various solib_ops implementation, to be used as `gdbarch_make_solib_ops`
callbacks.  For instance:

    solib_ops_up
    make_linux_ilp32_svr4_solib_ops ()
    {
      return std::make_unique<linux_ilp32_svr4_solib_ops> ();
    }

The previous code is full of cases of tdep files copying some base
solib_ops implementation, and overriding one or more function pointer
(see ppc_linux_init_abi, for instance).  I tried to convert all of this
is a class hierarchy.  I like that it's now possible to get a good
static view of all the existing solib_ops variants.  The hierarchy looks
like this:

    solib_ops
    ├── aix_solib_ops
    ├── darwin_solib_ops
    ├── dsbt_solib_ops
    ├── frv_solib_ops
    ├── rocm_solib_ops
    ├── svr4_solib_ops
    │   ├── ilp32_svr4_solib_ops
    │   ├── lp64_svr4_solib_ops
    │   ├── linux_ilp32_svr4_solib_ops
    │   │   ├── mips_linux_ilp32_svr4_solib_ops
    │   │   └── ppc_linux_ilp32_svr4_solib_ops
    │   ├── linux_lp64_svr4_solib_ops
    │   │   └── mips_linux_lp64_svr4_solib_ops
    │   ├── mips_nbsd_ilp32_svr4_solib_ops
    │   ├── mips_nbsd_lp64_svr4_solib_ops
    │   ├── mips_fbsd_ilp32_svr4_solib_ops
    │   └── mips_fbsd_lp64_svr4_solib_ops
    └── target_solib_ops
        └── windows_solib_ops

The solib-svr4 code has per-arch specialization to provide a
link_map_offsets, containing the offsets of the interesting fields in
`struct link_map` on that particular architecture.  Prior to this patch,
arches would set a callback returning the appropriate link_map_offsets
by calling `set_solib_svr4_fetch_link_map_offsets`, which also happened
to set the gdbarch's so_ops to `&svr_so_ops`.  I converted this to an
abstract virtual method of `struct svr4_solib_ops`, meaning that all
classes deriving from svr4_solib_ops must provide a method returning the
appropriate link_map_offsets for the architecture.  I renamed
`set_solib_svr4_fetch_link_map_offsets` to `set_solib_svr4_ops`.  This
function is still necessary because it also calls
set_gdbarch_iterate_over_objfiles_in_search_order, but if it was not for
that, we could get rid of it.

There is an instance of CRTP in mips-linux-tdep.c, because both
mips_linux_ilp32_svr4_solib_ops and mips_linux_lp64_svr4_solib_ops need
to derive from different SVR4 base classes (linux_ilp32_svr4_solib_ops
and linux_lp64_svr4_solib_ops), but they both want to override the
in_dynsym_resolve_code method with the same implementation.

The solib_ops::supports_namespaces method is new: the support for
namespaces was previously predicated by the presence or absence of a
find_solib_ns method.  It now needs to be explicit.

There is a new progspace::release_solib_ops method, which is only needed
for rocm_solib_ops.  For the moment, rocm_solib_ops replaces and wraps
the existing svr4_solib_ops instance, in order to combine the results of
the two.  The plan is to have a subsequent patch to allow program spaces to have
multiple solib_ops, removing the need for release_solib_ops.

Speaking of rocm_solib_ops: it previously overrode only a few methods by
copying svr4_solib_ops and overwriting some function pointers.  Now, it
needs to implement all the methods that svr4_solib_ops implements, in
order to forward the call.  Otherwise, the default solib_ops method
would be called, hiding the svr4_solib_ops implementation.  Again, this
can be removed once we have support for multiple solib_ops in a
program_space.

There is also a small change in how rocm_solib_ops is activated.  Prior
to this patch, it's done at the end of rocm_update_solib_list.  Since it
overrides the function pointer in the static svr4_solib_ops, and then
overwrites the host gdbarch, so_ops field, it's something that happens
only once.  After the patch though, we need to set rocm_solib_ops in all
the program spaces that appear.  We do this in
rocm_solib_target_inferior_created and in the new
rocm_solib_target_inferior_execd.  After this, I will explore doing a
change where rocm_solib_ops is only set when we detect the ROCm runtime
is loaded.

Change-Id: I5896b5bcbf8bdb024d67980380feba1ffefaa4c9
Approved-By: Pedro Alves <pedro@palves.net>
2025-06-26 14:08:31 -04:00

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/* Target-dependent code for GNU/Linux on LoongArch processors.
Copyright (C) 2022-2025 Free Software Foundation, Inc.
Contributed by Loongson Ltd.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "arch/loongarch-syscall.h"
#include "extract-store-integer.h"
#include "gdbarch.h"
#include "glibc-tdep.h"
#include "inferior.h"
#include "linux-record.h"
#include "linux-tdep.h"
#include "solib-svr4-linux.h"
#include "loongarch-tdep.h"
#include "record-full.h"
#include "regset.h"
#include "solib-svr4.h"
#include "target-descriptions.h"
#include "trad-frame.h"
#include "tramp-frame.h"
#include "value.h"
#include "xml-syscall.h"
/* The syscall's XML filename for LoongArch. */
#define XML_SYSCALL_FILENAME_LOONGARCH "syscalls/loongarch-linux.xml"
/* Unpack an elf_gregset_t into GDB's register cache. */
static void
loongarch_supply_gregset (const struct regset *regset,
struct regcache *regcache, int regnum,
const void *gprs, size_t len)
{
int regsize = register_size (regcache->arch (), 0);
const gdb_byte *buf = nullptr;
if (regnum == -1)
{
regcache->raw_supply_zeroed (0);
for (int i = 1; i < 32; i++)
{
buf = (const gdb_byte*) gprs + regsize * i;
regcache->raw_supply (i, (const void *) buf);
}
buf = (const gdb_byte*) gprs + regsize * LOONGARCH_ORIG_A0_REGNUM;
regcache->raw_supply (LOONGARCH_ORIG_A0_REGNUM, (const void *) buf);
buf = (const gdb_byte*) gprs + regsize * LOONGARCH_PC_REGNUM;
regcache->raw_supply (LOONGARCH_PC_REGNUM, (const void *) buf);
buf = (const gdb_byte*) gprs + regsize * LOONGARCH_BADV_REGNUM;
regcache->raw_supply (LOONGARCH_BADV_REGNUM, (const void *) buf);
}
else if (regnum == 0)
regcache->raw_supply_zeroed (0);
else if ((regnum > 0 && regnum < 32)
|| regnum == LOONGARCH_ORIG_A0_REGNUM
|| regnum == LOONGARCH_PC_REGNUM
|| regnum == LOONGARCH_BADV_REGNUM)
{
buf = (const gdb_byte*) gprs + regsize * regnum;
regcache->raw_supply (regnum, (const void *) buf);
}
}
/* Pack the GDB's register cache value into an elf_gregset_t. */
static void
loongarch_fill_gregset (const struct regset *regset,
const struct regcache *regcache, int regnum,
void *gprs, size_t len)
{
int regsize = register_size (regcache->arch (), 0);
gdb_byte *buf = nullptr;
if (regnum == -1)
{
for (int i = 0; i < 32; i++)
{
buf = (gdb_byte *) gprs + regsize * i;
regcache->raw_collect (i, (void *) buf);
}
buf = (gdb_byte *) gprs + regsize * LOONGARCH_ORIG_A0_REGNUM;
regcache->raw_collect (LOONGARCH_ORIG_A0_REGNUM, (void *) buf);
buf = (gdb_byte *) gprs + regsize * LOONGARCH_PC_REGNUM;
regcache->raw_collect (LOONGARCH_PC_REGNUM, (void *) buf);
buf = (gdb_byte *) gprs + regsize * LOONGARCH_BADV_REGNUM;
regcache->raw_collect (LOONGARCH_BADV_REGNUM, (void *) buf);
}
else if ((regnum >= 0 && regnum < 32)
|| regnum == LOONGARCH_ORIG_A0_REGNUM
|| regnum == LOONGARCH_PC_REGNUM
|| regnum == LOONGARCH_BADV_REGNUM)
{
buf = (gdb_byte *) gprs + regsize * regnum;
regcache->raw_collect (regnum, (void *) buf);
}
}
/* Define the general register regset. */
const struct regset loongarch_gregset =
{
nullptr,
loongarch_supply_gregset,
loongarch_fill_gregset,
};
/* Unpack an elf_fpregset_t into GDB's register cache. */
static void
loongarch_supply_fpregset (const struct regset *r,
struct regcache *regcache, int regnum,
const void *fprs, size_t len)
{
const gdb_byte *buf = nullptr;
int fprsize = register_size (regcache->arch (), LOONGARCH_FIRST_FP_REGNUM);
int fccsize = register_size (regcache->arch (), LOONGARCH_FIRST_FCC_REGNUM);
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_FPREGSET; i++)
{
buf = (const gdb_byte *)fprs + fprsize * i;
regcache->raw_supply (LOONGARCH_FIRST_FP_REGNUM + i, (const void *)buf);
}
for (int i = 0; i < LOONGARCH_LINUX_NUM_FCC; i++)
{
buf = (const gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * i;
regcache->raw_supply (LOONGARCH_FIRST_FCC_REGNUM + i, (const void *)buf);
}
buf = (const gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * LOONGARCH_LINUX_NUM_FCC;
regcache->raw_supply (LOONGARCH_FCSR_REGNUM, (const void *)buf);
}
else if (regnum >= LOONGARCH_FIRST_FP_REGNUM && regnum < LOONGARCH_FIRST_FCC_REGNUM)
{
buf = (const gdb_byte *)fprs + fprsize * (regnum - LOONGARCH_FIRST_FP_REGNUM);
regcache->raw_supply (regnum, (const void *)buf);
}
else if (regnum >= LOONGARCH_FIRST_FCC_REGNUM && regnum < LOONGARCH_FCSR_REGNUM)
{
buf = (const gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * (regnum - LOONGARCH_FIRST_FCC_REGNUM);
regcache->raw_supply (regnum, (const void *)buf);
}
else if (regnum == LOONGARCH_FCSR_REGNUM)
{
buf = (const gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * LOONGARCH_LINUX_NUM_FCC;
regcache->raw_supply (regnum, (const void *)buf);
}
}
/* Pack the GDB's register cache value into an elf_fpregset_t. */
static void
loongarch_fill_fpregset (const struct regset *r,
const struct regcache *regcache, int regnum,
void *fprs, size_t len)
{
gdb_byte *buf = nullptr;
int fprsize = register_size (regcache->arch (), LOONGARCH_FIRST_FP_REGNUM);
int fccsize = register_size (regcache->arch (), LOONGARCH_FIRST_FCC_REGNUM);
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_FPREGSET; i++)
{
buf = (gdb_byte *)fprs + fprsize * i;
regcache->raw_collect (LOONGARCH_FIRST_FP_REGNUM + i, (void *)buf);
}
for (int i = 0; i < LOONGARCH_LINUX_NUM_FCC; i++)
{
buf = (gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * i;
regcache->raw_collect (LOONGARCH_FIRST_FCC_REGNUM + i, (void *)buf);
}
buf = (gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * LOONGARCH_LINUX_NUM_FCC;
regcache->raw_collect (LOONGARCH_FCSR_REGNUM, (void *)buf);
}
else if (regnum >= LOONGARCH_FIRST_FP_REGNUM && regnum < LOONGARCH_FIRST_FCC_REGNUM)
{
buf = (gdb_byte *)fprs + fprsize * (regnum - LOONGARCH_FIRST_FP_REGNUM);
regcache->raw_collect (regnum, (void *)buf);
}
else if (regnum >= LOONGARCH_FIRST_FCC_REGNUM && regnum < LOONGARCH_FCSR_REGNUM)
{
buf = (gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * (regnum - LOONGARCH_FIRST_FCC_REGNUM);
regcache->raw_collect (regnum, (void *)buf);
}
else if (regnum == LOONGARCH_FCSR_REGNUM)
{
buf = (gdb_byte *)fprs + fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * LOONGARCH_LINUX_NUM_FCC;
regcache->raw_collect (regnum, (void *)buf);
}
}
/* Define the FP register regset. */
const struct regset loongarch_fpregset =
{
nullptr,
loongarch_supply_fpregset,
loongarch_fill_fpregset,
};
/* Unpack elf_lsxregset_t into GDB's register cache. */
static void
loongarch_supply_lsxregset (const struct regset *regset,
struct regcache *regcache, int regnum,
const void *lsxrs, size_t len)
{
int lsxrsize = register_size (regcache->arch (), LOONGARCH_FIRST_LSX_REGNUM);
const gdb_byte *buf = nullptr;
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_LSXREGSET; i++)
{
buf = (const gdb_byte*) lsxrs + lsxrsize * i;
regcache->raw_supply (LOONGARCH_FIRST_LSX_REGNUM + i, (const void *) buf);
}
}
else if (regnum >= LOONGARCH_FIRST_LSX_REGNUM && regnum < LOONGARCH_FIRST_LASX_REGNUM)
{
buf = (const gdb_byte*) lsxrs + lsxrsize * (regnum - LOONGARCH_FIRST_LSX_REGNUM);
regcache->raw_supply (regnum, (const void *) buf);
}
}
/* Pack the GDB's register cache value into an elf_lsxregset_t. */
static void
loongarch_fill_lsxregset (const struct regset *regset,
const struct regcache *regcache, int regnum,
void *lsxrs, size_t len)
{
int lsxrsize = register_size (regcache->arch (), LOONGARCH_FIRST_LSX_REGNUM);
gdb_byte *buf = nullptr;
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_LSXREGSET; i++)
{
buf = (gdb_byte *) lsxrs + lsxrsize * i;
regcache->raw_collect (LOONGARCH_FIRST_LSX_REGNUM + i, (void *) buf);
}
}
else if (regnum >= LOONGARCH_FIRST_LSX_REGNUM && regnum < LOONGARCH_FIRST_LASX_REGNUM)
{
buf = (gdb_byte *) lsxrs + lsxrsize * (regnum - LOONGARCH_FIRST_LSX_REGNUM);
regcache->raw_collect (regnum, (void *) buf);
}
}
/* Define the Loongson SIMD Extension register regset. */
const struct regset loongarch_lsxregset =
{
nullptr,
loongarch_supply_lsxregset,
loongarch_fill_lsxregset,
};
/* Unpack elf_lasxregset_t into GDB's register cache. */
static void
loongarch_supply_lasxregset (const struct regset *regset,
struct regcache *regcache, int regnum,
const void *lasxrs, size_t len)
{
int lasxrsize = register_size (regcache->arch (), LOONGARCH_FIRST_LASX_REGNUM);
const gdb_byte *buf = nullptr;
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_LASXREGSET; i++)
{
buf = (const gdb_byte*) lasxrs + lasxrsize * i;
regcache->raw_supply (LOONGARCH_FIRST_LASX_REGNUM + i, (const void *) buf);
}
}
else if (regnum >= LOONGARCH_FIRST_LASX_REGNUM
&& regnum < LOONGARCH_FIRST_LASX_REGNUM + LOONGARCH_LINUX_NUM_LASXREGSET)
{
buf = (const gdb_byte*) lasxrs + lasxrsize * (regnum - LOONGARCH_FIRST_LASX_REGNUM);
regcache->raw_supply (regnum, (const void *) buf);
}
}
/* Pack the GDB's register cache value into an elf_lasxregset_t. */
static void
loongarch_fill_lasxregset (const struct regset *regset,
const struct regcache *regcache, int regnum,
void *lasxrs, size_t len)
{
int lasxrsize = register_size (regcache->arch (), LOONGARCH_FIRST_LASX_REGNUM);
gdb_byte *buf = nullptr;
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_LASXREGSET; i++)
{
buf = (gdb_byte *) lasxrs + lasxrsize * i;
regcache->raw_collect (LOONGARCH_FIRST_LASX_REGNUM + i, (void *) buf);
}
}
else if (regnum >= LOONGARCH_FIRST_LASX_REGNUM
&& regnum < LOONGARCH_FIRST_LASX_REGNUM + LOONGARCH_LINUX_NUM_LASXREGSET)
{
buf = (gdb_byte *) lasxrs + lasxrsize * (regnum - LOONGARCH_FIRST_LASX_REGNUM);
regcache->raw_collect (regnum, (void *) buf);
}
}
/* Define the Loongson Advanced SIMD Extension register regset. */
const struct regset loongarch_lasxregset =
{
nullptr,
loongarch_supply_lasxregset,
loongarch_fill_lasxregset,
};
/* Unpack an lbt regset into GDB's register cache. */
static void
loongarch_supply_lbtregset (const struct regset *regset,
struct regcache *regcache, int regnum,
const void *regs, size_t len)
{
int scrsize = register_size (regcache->arch (), LOONGARCH_FIRST_SCR_REGNUM);
int eflagssize = register_size (regcache->arch (), LOONGARCH_EFLAGS_REGNUM);
const gdb_byte *buf = nullptr;
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_SCR; i++)
{
buf = (const gdb_byte *) regs + scrsize * i;
regcache->raw_supply (LOONGARCH_FIRST_SCR_REGNUM + i,
(const void *) buf);
}
buf = (const gdb_byte*) regs + scrsize * LOONGARCH_LINUX_NUM_SCR;
regcache->raw_supply (LOONGARCH_EFLAGS_REGNUM, (const void *) buf);
buf = (const gdb_byte*) regs
+ scrsize * LOONGARCH_LINUX_NUM_SCR
+ eflagssize;
regcache->raw_supply (LOONGARCH_FTOP_REGNUM, (const void *) buf);
}
else if (regnum >= LOONGARCH_FIRST_SCR_REGNUM
&& regnum <= LOONGARCH_LAST_SCR_REGNUM)
{
buf = (const gdb_byte*) regs
+ scrsize * (regnum - LOONGARCH_FIRST_SCR_REGNUM);
regcache->raw_supply (regnum, (const void *) buf);
}
else if (regnum == LOONGARCH_EFLAGS_REGNUM)
{
buf = (const gdb_byte*) regs + scrsize * LOONGARCH_LINUX_NUM_SCR;
regcache->raw_supply (regnum, (const void *) buf);
}
else if (regnum == LOONGARCH_FTOP_REGNUM)
{
buf = (const gdb_byte*) regs
+ scrsize * LOONGARCH_LINUX_NUM_SCR
+ eflagssize;
regcache->raw_supply (regnum, (const void *) buf);
}
}
/* Pack the GDB's register cache value into an lbt regset. */
static void
loongarch_fill_lbtregset (const struct regset *regset,
const struct regcache *regcache, int regnum,
void *regs, size_t len)
{
int scrsize = register_size (regcache->arch (), LOONGARCH_FIRST_SCR_REGNUM);
int eflagssize = register_size (regcache->arch (), LOONGARCH_EFLAGS_REGNUM);
gdb_byte *buf = nullptr;
if (regnum == -1)
{
for (int i = 0; i < LOONGARCH_LINUX_NUM_SCR; i++)
{
buf = (gdb_byte *) regs + scrsize * i;
regcache->raw_collect (LOONGARCH_FIRST_SCR_REGNUM + i, (void *) buf);
}
buf = (gdb_byte *) regs + scrsize * LOONGARCH_LINUX_NUM_SCR;
regcache->raw_collect (LOONGARCH_EFLAGS_REGNUM, (void *) buf);
buf = (gdb_byte *) regs + scrsize * LOONGARCH_LINUX_NUM_SCR + eflagssize;
regcache->raw_collect (LOONGARCH_FTOP_REGNUM, (void *) buf);
}
else if (regnum >= LOONGARCH_FIRST_SCR_REGNUM
&& regnum <= LOONGARCH_LAST_SCR_REGNUM)
{
buf = (gdb_byte *) regs + scrsize * (regnum - LOONGARCH_FIRST_SCR_REGNUM);
regcache->raw_collect (regnum, (void *) buf);
}
else if (regnum == LOONGARCH_EFLAGS_REGNUM)
{
buf = (gdb_byte *) regs + scrsize * LOONGARCH_LINUX_NUM_SCR;
regcache->raw_collect (regnum, (void *) buf);
}
else if (regnum == LOONGARCH_FTOP_REGNUM)
{
buf = (gdb_byte *) regs + scrsize * LOONGARCH_LINUX_NUM_SCR + eflagssize;
regcache->raw_collect (regnum, (void *) buf);
}
}
/* Define the lbt register regset. */
const struct regset loongarch_lbtregset =
{
nullptr,
loongarch_supply_lbtregset,
loongarch_fill_lbtregset,
};
/* Implement the "init" method of struct tramp_frame. */
#define LOONGARCH_RT_SIGFRAME_UCONTEXT_OFFSET 128
#define LOONGARCH_UCONTEXT_SIGCONTEXT_OFFSET 176
static void
loongarch_linux_rt_sigframe_init (const struct tramp_frame *self,
const frame_info_ptr &this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
CORE_ADDR frame_sp = get_frame_sp (this_frame);
CORE_ADDR sigcontext_base = (frame_sp + LOONGARCH_RT_SIGFRAME_UCONTEXT_OFFSET
+ LOONGARCH_UCONTEXT_SIGCONTEXT_OFFSET);
trad_frame_set_reg_addr (this_cache, LOONGARCH_PC_REGNUM, sigcontext_base);
for (int i = 0; i < 32; i++)
trad_frame_set_reg_addr (this_cache, i, sigcontext_base + 8 + i * 8);
trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
}
/* li.w a7, __NR_rt_sigreturn */
#define LOONGARCH_INST_LIW_A7_RT_SIGRETURN 0x03822c0b
/* syscall 0 */
#define LOONGARCH_INST_SYSCALL 0x002b0000
static const struct tramp_frame loongarch_linux_rt_sigframe =
{
SIGTRAMP_FRAME,
4,
{
{ LOONGARCH_INST_LIW_A7_RT_SIGRETURN, ULONGEST_MAX },
{ LOONGARCH_INST_SYSCALL, ULONGEST_MAX },
{ TRAMP_SENTINEL_INSN, ULONGEST_MAX }
},
loongarch_linux_rt_sigframe_init,
nullptr
};
/* Implement the "iterate_over_regset_sections" gdbarch method. */
static void
loongarch_iterate_over_regset_sections (struct gdbarch *gdbarch,
iterate_over_regset_sections_cb *cb,
void *cb_data,
const struct regcache *regcache)
{
int gprsize = register_size (gdbarch, 0);
int gpsize = gprsize * LOONGARCH_LINUX_NUM_GREGSET;
int fprsize = register_size (gdbarch, LOONGARCH_FIRST_FP_REGNUM);
int fccsize = register_size (gdbarch, LOONGARCH_FIRST_FCC_REGNUM);
int fcsrsize = register_size (gdbarch, LOONGARCH_FCSR_REGNUM);
int fpsize = fprsize * LOONGARCH_LINUX_NUM_FPREGSET +
fccsize * LOONGARCH_LINUX_NUM_FCC + fcsrsize;
int lsxrsize = register_size (gdbarch, LOONGARCH_FIRST_LSX_REGNUM);
int lsxsize = lsxrsize * LOONGARCH_LINUX_NUM_LSXREGSET;
int lasxrsize = register_size (gdbarch, LOONGARCH_FIRST_LASX_REGNUM);
int lasxsize = lasxrsize * LOONGARCH_LINUX_NUM_LASXREGSET;
int scrsize = register_size (gdbarch, LOONGARCH_FIRST_SCR_REGNUM);
int eflagssize = register_size (gdbarch, LOONGARCH_EFLAGS_REGNUM);
int ftopsize = register_size (gdbarch, LOONGARCH_FTOP_REGNUM);
int lbtsize = scrsize * LOONGARCH_LINUX_NUM_SCR + eflagssize + ftopsize;
cb (".reg", gpsize, gpsize,
&loongarch_gregset, nullptr, cb_data);
cb (".reg2", fpsize, fpsize,
&loongarch_fpregset, nullptr, cb_data);
cb (".reg-loongarch-lsx", lsxsize, lsxsize,
&loongarch_lsxregset, nullptr, cb_data);
cb (".reg-loongarch-lasx", lasxsize, lasxsize,
&loongarch_lasxregset, nullptr, cb_data);
cb (".reg-loongarch-lbt", lbtsize, lbtsize,
&loongarch_lbtregset, nullptr, cb_data);
}
/* The following value is derived from __NR_rt_sigreturn in
<include/uapi/asm-generic/unistd.h> from the Linux source tree. */
#define LOONGARCH_NR_rt_sigreturn 139
/* When FRAME is at a syscall instruction, return the PC of the next
instruction to be executed. */
static CORE_ADDR
loongarch_linux_syscall_next_pc (const frame_info_ptr &frame)
{
const CORE_ADDR pc = get_frame_pc (frame);
ULONGEST a7 = get_frame_register_unsigned (frame, LOONGARCH_A7_REGNUM);
/* If we are about to make a sigreturn syscall, use the unwinder to
decode the signal frame. */
if (a7 == LOONGARCH_NR_rt_sigreturn)
return frame_unwind_caller_pc (frame);
return pc + 4;
}
/* Implement the "get_syscall_number" gdbarch method. */
static LONGEST
loongarch_linux_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread)
{
struct regcache *regcache = get_thread_regcache (thread);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int regsize = register_size (gdbarch, LOONGARCH_A7_REGNUM);
/* The content of a register. */
gdb_byte buf[8];
/* The result. */
LONGEST ret;
gdb_assert (regsize <= sizeof (buf));
/* Getting the system call number from the register.
When dealing with the LoongArch architecture, this information
is stored at the a7 register. */
regcache->cooked_read (LOONGARCH_A7_REGNUM, buf);
ret = extract_signed_integer (buf, regsize, byte_order);
return ret;
}
static linux_record_tdep loongarch_linux_record_tdep;
/* loongarch_canonicalize_syscall maps syscall ids from the native LoongArch
linux set of syscall ids into a canonical set of syscall ids used by
process record. */
static enum gdb_syscall
loongarch_canonicalize_syscall (enum loongarch_syscall syscall_number)
{
#define SYSCALL_MAP(SYSCALL) \
case loongarch_sys_ ## SYSCALL: \
return gdb_sys_ ## SYSCALL
#define SYSCALL_MAP_RENAME(SYSCALL, GDB_SYSCALL) \
case loongarch_sys_ ## SYSCALL: \
return GDB_SYSCALL;
#define UNSUPPORTED_SYSCALL_MAP(SYSCALL) \
case loongarch_sys_ ## SYSCALL: \
return gdb_sys_no_syscall
switch(syscall_number)
{
SYSCALL_MAP (io_setup);
SYSCALL_MAP (io_destroy);
SYSCALL_MAP (io_submit);
SYSCALL_MAP (io_cancel);
SYSCALL_MAP (io_getevents);
SYSCALL_MAP (setxattr);
SYSCALL_MAP (lsetxattr);
SYSCALL_MAP (fsetxattr);
SYSCALL_MAP (getxattr);
SYSCALL_MAP (lgetxattr);
SYSCALL_MAP (fgetxattr);
SYSCALL_MAP (listxattr);
SYSCALL_MAP (llistxattr);
SYSCALL_MAP (flistxattr);
SYSCALL_MAP (removexattr);
SYSCALL_MAP (lremovexattr);
SYSCALL_MAP (fremovexattr);
SYSCALL_MAP (getcwd);
SYSCALL_MAP (lookup_dcookie);
SYSCALL_MAP (eventfd2);
SYSCALL_MAP (epoll_create1);
SYSCALL_MAP (epoll_ctl);
SYSCALL_MAP (epoll_pwait);
SYSCALL_MAP (dup);
SYSCALL_MAP (dup3);
SYSCALL_MAP (fcntl);
SYSCALL_MAP (inotify_init1);
SYSCALL_MAP (inotify_add_watch);
SYSCALL_MAP (inotify_rm_watch);
SYSCALL_MAP (ioctl);
SYSCALL_MAP (ioprio_set);
SYSCALL_MAP (ioprio_get);
SYSCALL_MAP (flock);
SYSCALL_MAP (mknodat);
SYSCALL_MAP (mkdirat);
SYSCALL_MAP (unlinkat);
SYSCALL_MAP (symlinkat);
SYSCALL_MAP (linkat);
UNSUPPORTED_SYSCALL_MAP (umount2);
SYSCALL_MAP (mount);
SYSCALL_MAP (pivot_root);
SYSCALL_MAP (nfsservctl);
SYSCALL_MAP (statfs);
SYSCALL_MAP (truncate);
SYSCALL_MAP (ftruncate);
SYSCALL_MAP (fallocate);
SYSCALL_MAP (faccessat);
SYSCALL_MAP (fchdir);
SYSCALL_MAP (chroot);
SYSCALL_MAP (fchmod);
SYSCALL_MAP (fchmodat);
SYSCALL_MAP (fchownat);
SYSCALL_MAP (fchown);
SYSCALL_MAP (openat);
SYSCALL_MAP (close);
SYSCALL_MAP (vhangup);
SYSCALL_MAP (pipe2);
SYSCALL_MAP (quotactl);
SYSCALL_MAP (getdents64);
SYSCALL_MAP (lseek);
SYSCALL_MAP (read);
SYSCALL_MAP (write);
SYSCALL_MAP (readv);
SYSCALL_MAP (writev);
SYSCALL_MAP (pread64);
SYSCALL_MAP (pwrite64);
UNSUPPORTED_SYSCALL_MAP (preadv);
UNSUPPORTED_SYSCALL_MAP (pwritev);
SYSCALL_MAP (sendfile);
SYSCALL_MAP (pselect6);
SYSCALL_MAP (ppoll);
UNSUPPORTED_SYSCALL_MAP (signalfd4);
SYSCALL_MAP (vmsplice);
SYSCALL_MAP (splice);
SYSCALL_MAP (tee);
SYSCALL_MAP (readlinkat);
SYSCALL_MAP (newfstatat);
SYSCALL_MAP (fstat);
SYSCALL_MAP (sync);
SYSCALL_MAP (fsync);
SYSCALL_MAP (fdatasync);
SYSCALL_MAP (sync_file_range);
UNSUPPORTED_SYSCALL_MAP (timerfd_create);
UNSUPPORTED_SYSCALL_MAP (timerfd_settime);
UNSUPPORTED_SYSCALL_MAP (timerfd_gettime);
UNSUPPORTED_SYSCALL_MAP (utimensat);
SYSCALL_MAP (acct);
SYSCALL_MAP (capget);
SYSCALL_MAP (capset);
SYSCALL_MAP (personality);
SYSCALL_MAP (exit);
SYSCALL_MAP (exit_group);
SYSCALL_MAP (waitid);
SYSCALL_MAP (set_tid_address);
SYSCALL_MAP (unshare);
SYSCALL_MAP (futex);
SYSCALL_MAP (set_robust_list);
SYSCALL_MAP (get_robust_list);
SYSCALL_MAP (nanosleep);
SYSCALL_MAP (getitimer);
SYSCALL_MAP (setitimer);
SYSCALL_MAP (kexec_load);
SYSCALL_MAP (init_module);
SYSCALL_MAP (delete_module);
SYSCALL_MAP (timer_create);
SYSCALL_MAP (timer_settime);
SYSCALL_MAP (timer_gettime);
SYSCALL_MAP (timer_getoverrun);
SYSCALL_MAP (timer_delete);
SYSCALL_MAP (clock_settime);
SYSCALL_MAP (clock_gettime);
SYSCALL_MAP (clock_getres);
SYSCALL_MAP (clock_nanosleep);
SYSCALL_MAP (syslog);
SYSCALL_MAP (ptrace);
SYSCALL_MAP (sched_setparam);
SYSCALL_MAP (sched_setscheduler);
SYSCALL_MAP (sched_getscheduler);
SYSCALL_MAP (sched_getparam);
SYSCALL_MAP (sched_setaffinity);
SYSCALL_MAP (sched_getaffinity);
SYSCALL_MAP (sched_yield);
SYSCALL_MAP (sched_get_priority_max);
SYSCALL_MAP (sched_get_priority_min);
SYSCALL_MAP (sched_rr_get_interval);
SYSCALL_MAP (kill);
SYSCALL_MAP (tkill);
SYSCALL_MAP (tgkill);
SYSCALL_MAP (sigaltstack);
SYSCALL_MAP (rt_sigsuspend);
SYSCALL_MAP (rt_sigaction);
SYSCALL_MAP (rt_sigprocmask);
SYSCALL_MAP (rt_sigpending);
SYSCALL_MAP (rt_sigtimedwait);
SYSCALL_MAP (rt_sigqueueinfo);
SYSCALL_MAP (rt_sigreturn);
SYSCALL_MAP (setpriority);
SYSCALL_MAP (getpriority);
SYSCALL_MAP (reboot);
SYSCALL_MAP (setregid);
SYSCALL_MAP (setgid);
SYSCALL_MAP (setreuid);
SYSCALL_MAP (setuid);
SYSCALL_MAP (setresuid);
SYSCALL_MAP (getresuid);
SYSCALL_MAP (setresgid);
SYSCALL_MAP (getresgid);
SYSCALL_MAP (setfsuid);
SYSCALL_MAP (setfsgid);
SYSCALL_MAP (times);
SYSCALL_MAP (setpgid);
SYSCALL_MAP (getpgid);
SYSCALL_MAP (getsid);
SYSCALL_MAP (setsid);
SYSCALL_MAP (getgroups);
SYSCALL_MAP (setgroups);
SYSCALL_MAP (uname);
SYSCALL_MAP (sethostname);
SYSCALL_MAP (setdomainname);
SYSCALL_MAP (getrusage);
SYSCALL_MAP (umask);
SYSCALL_MAP (prctl);
SYSCALL_MAP (getcpu);
SYSCALL_MAP (gettimeofday);
SYSCALL_MAP (settimeofday);
SYSCALL_MAP (adjtimex);
SYSCALL_MAP (getpid);
SYSCALL_MAP (getppid);
SYSCALL_MAP (getuid);
SYSCALL_MAP (geteuid);
SYSCALL_MAP (getgid);
SYSCALL_MAP (getegid);
SYSCALL_MAP (gettid);
SYSCALL_MAP (sysinfo);
SYSCALL_MAP (mq_open);
SYSCALL_MAP (mq_unlink);
SYSCALL_MAP (mq_timedsend);
SYSCALL_MAP (mq_timedreceive);
SYSCALL_MAP (mq_notify);
SYSCALL_MAP (mq_getsetattr);
SYSCALL_MAP (msgget);
SYSCALL_MAP (msgctl);
SYSCALL_MAP (msgrcv);
SYSCALL_MAP (msgsnd);
SYSCALL_MAP (semget);
SYSCALL_MAP (semctl);
SYSCALL_MAP (semtimedop);
SYSCALL_MAP (semop);
SYSCALL_MAP (shmget);
SYSCALL_MAP (shmctl);
SYSCALL_MAP (shmat);
SYSCALL_MAP (shmdt);
SYSCALL_MAP (socket);
SYSCALL_MAP (socketpair);
SYSCALL_MAP (bind);
SYSCALL_MAP (listen);
SYSCALL_MAP (accept);
SYSCALL_MAP (connect);
SYSCALL_MAP (getsockname);
SYSCALL_MAP (getpeername);
SYSCALL_MAP (sendto);
SYSCALL_MAP (recvfrom);
SYSCALL_MAP (setsockopt);
SYSCALL_MAP (getsockopt);
SYSCALL_MAP (shutdown);
SYSCALL_MAP (sendmsg);
SYSCALL_MAP (recvmsg);
SYSCALL_MAP (readahead);
SYSCALL_MAP (brk);
SYSCALL_MAP (munmap);
SYSCALL_MAP (mremap);
SYSCALL_MAP (add_key);
SYSCALL_MAP (request_key);
SYSCALL_MAP (keyctl);
SYSCALL_MAP (clone);
SYSCALL_MAP (execve);
SYSCALL_MAP_RENAME (mmap, gdb_sys_old_mmap);
SYSCALL_MAP (fadvise64);
SYSCALL_MAP (swapon);
SYSCALL_MAP (swapoff);
SYSCALL_MAP (mprotect);
SYSCALL_MAP (msync);
SYSCALL_MAP (mlock);
SYSCALL_MAP (munlock);
SYSCALL_MAP (mlockall);
SYSCALL_MAP (munlockall);
SYSCALL_MAP (mincore);
SYSCALL_MAP (madvise);
SYSCALL_MAP (remap_file_pages);
SYSCALL_MAP (mbind);
SYSCALL_MAP (get_mempolicy);
SYSCALL_MAP (set_mempolicy);
SYSCALL_MAP (migrate_pages);
SYSCALL_MAP (move_pages);
UNSUPPORTED_SYSCALL_MAP (rt_tgsigqueueinfo);
UNSUPPORTED_SYSCALL_MAP (perf_event_open);
SYSCALL_MAP (accept4);
UNSUPPORTED_SYSCALL_MAP (recvmmsg);
SYSCALL_MAP (wait4);
UNSUPPORTED_SYSCALL_MAP (prlimit64);
UNSUPPORTED_SYSCALL_MAP (fanotify_init);
UNSUPPORTED_SYSCALL_MAP (fanotify_mark);
UNSUPPORTED_SYSCALL_MAP (name_to_handle_at);
UNSUPPORTED_SYSCALL_MAP (open_by_handle_at);
UNSUPPORTED_SYSCALL_MAP (clock_adjtime);
UNSUPPORTED_SYSCALL_MAP (syncfs);
UNSUPPORTED_SYSCALL_MAP (setns);
UNSUPPORTED_SYSCALL_MAP (sendmmsg);
UNSUPPORTED_SYSCALL_MAP (process_vm_readv);
UNSUPPORTED_SYSCALL_MAP (process_vm_writev);
UNSUPPORTED_SYSCALL_MAP (kcmp);
UNSUPPORTED_SYSCALL_MAP (finit_module);
UNSUPPORTED_SYSCALL_MAP (sched_setattr);
UNSUPPORTED_SYSCALL_MAP (sched_getattr);
UNSUPPORTED_SYSCALL_MAP (renameat2);
UNSUPPORTED_SYSCALL_MAP (seccomp);
SYSCALL_MAP (getrandom);
UNSUPPORTED_SYSCALL_MAP (memfd_create);
UNSUPPORTED_SYSCALL_MAP (bpf);
UNSUPPORTED_SYSCALL_MAP (execveat);
UNSUPPORTED_SYSCALL_MAP (userfaultfd);
UNSUPPORTED_SYSCALL_MAP (membarrier);
UNSUPPORTED_SYSCALL_MAP (mlock2);
UNSUPPORTED_SYSCALL_MAP (copy_file_range);
UNSUPPORTED_SYSCALL_MAP (preadv2);
UNSUPPORTED_SYSCALL_MAP (pwritev2);
UNSUPPORTED_SYSCALL_MAP (pkey_mprotect);
UNSUPPORTED_SYSCALL_MAP (pkey_alloc);
UNSUPPORTED_SYSCALL_MAP (pkey_free);
SYSCALL_MAP (statx);
UNSUPPORTED_SYSCALL_MAP (io_pgetevents);
UNSUPPORTED_SYSCALL_MAP (rseq);
UNSUPPORTED_SYSCALL_MAP (kexec_file_load);
UNSUPPORTED_SYSCALL_MAP (pidfd_send_signal);
UNSUPPORTED_SYSCALL_MAP (io_uring_setup);
UNSUPPORTED_SYSCALL_MAP (io_uring_enter);
UNSUPPORTED_SYSCALL_MAP (io_uring_register);
UNSUPPORTED_SYSCALL_MAP (open_tree);
UNSUPPORTED_SYSCALL_MAP (move_mount);
UNSUPPORTED_SYSCALL_MAP (fsopen);
UNSUPPORTED_SYSCALL_MAP (fsconfig);
UNSUPPORTED_SYSCALL_MAP (fsmount);
UNSUPPORTED_SYSCALL_MAP (fspick);
UNSUPPORTED_SYSCALL_MAP (pidfd_open);
UNSUPPORTED_SYSCALL_MAP (clone3);
UNSUPPORTED_SYSCALL_MAP (close_range);
UNSUPPORTED_SYSCALL_MAP (openat2);
UNSUPPORTED_SYSCALL_MAP (pidfd_getfd);
UNSUPPORTED_SYSCALL_MAP (faccessat2);
UNSUPPORTED_SYSCALL_MAP (process_madvise);
UNSUPPORTED_SYSCALL_MAP (epoll_pwait2);
UNSUPPORTED_SYSCALL_MAP (mount_setattr);
UNSUPPORTED_SYSCALL_MAP (quotactl_fd);
UNSUPPORTED_SYSCALL_MAP (landlock_create_ruleset);
UNSUPPORTED_SYSCALL_MAP (landlock_add_rule);
UNSUPPORTED_SYSCALL_MAP (landlock_restrict_self);
UNSUPPORTED_SYSCALL_MAP (process_mrelease);
UNSUPPORTED_SYSCALL_MAP (futex_waitv);
UNSUPPORTED_SYSCALL_MAP (set_mempolicy_home_node);
UNSUPPORTED_SYSCALL_MAP (cachestat);
UNSUPPORTED_SYSCALL_MAP (fchmodat2);
UNSUPPORTED_SYSCALL_MAP (map_shadow_stack);
UNSUPPORTED_SYSCALL_MAP (futex_wake);
UNSUPPORTED_SYSCALL_MAP (futex_wait);
UNSUPPORTED_SYSCALL_MAP (futex_requeue);
UNSUPPORTED_SYSCALL_MAP (statmount);
UNSUPPORTED_SYSCALL_MAP (listmount);
UNSUPPORTED_SYSCALL_MAP (lsm_get_self_attr);
UNSUPPORTED_SYSCALL_MAP (lsm_set_self_attr);
UNSUPPORTED_SYSCALL_MAP (lsm_list_modules);
UNSUPPORTED_SYSCALL_MAP (mseal);
UNSUPPORTED_SYSCALL_MAP (syscalls);
default:
return gdb_sys_no_syscall;
}
#undef SYSCALL_MAP
#undef SYSCALL_MAP_RENAME
#undef UNSUPPORTED_SYSCALL_MAP
}
static int
loongarch_record_all_but_pc_registers (struct regcache *regcache)
{
/* Record General purpose Registers. */
for (int i = 0; i < 32; ++i)
if (record_full_arch_list_add_reg (regcache, i))
return -1;
/* Record orig_a0 */
if (record_full_arch_list_add_reg (regcache, LOONGARCH_ORIG_A0_REGNUM))
return -1;
/* Record badvaddr */
if (record_full_arch_list_add_reg (regcache, LOONGARCH_BADV_REGNUM))
return -1;
return 0;
}
/* Handler for LoongArch architecture system call instruction recording. */
static int
loongarch_linux_syscall_record (struct regcache *regcache,
unsigned long syscall_number)
{
int ret = 0;
enum gdb_syscall syscall_gdb;
syscall_gdb =
loongarch_canonicalize_syscall ((enum loongarch_syscall) syscall_number);
if (syscall_gdb < 0)
{
gdb_printf (gdb_stderr,
_("Process record and replay target doesn't "
"support syscall number %s\n"), plongest (syscall_number));
return -1;
}
if (syscall_gdb == gdb_sys_sigreturn || syscall_gdb == gdb_sys_rt_sigreturn)
return loongarch_record_all_but_pc_registers (regcache);
ret = record_linux_system_call (syscall_gdb, regcache,
&loongarch_linux_record_tdep);
if (ret != 0)
return ret;
/* Record the return value of the system call. */
if (record_full_arch_list_add_reg (regcache, LOONGARCH_A0_REGNUM))
return -1;
return 0;
}
/* Initialize the loongarch_linux_record_tdep. These values are the size
of the type that will be used in a system call. They are obtained from
Linux Kernel source. */
static void
init_loongarch_linux_record_tdep (struct gdbarch *gdbarch)
{
loongarch_linux_record_tdep.size_pointer
= gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT;
loongarch_linux_record_tdep.size_tms = 32;
loongarch_linux_record_tdep.size_loff_t = 8;
loongarch_linux_record_tdep.size_flock = 32;
loongarch_linux_record_tdep.size_oldold_utsname = 45;
loongarch_linux_record_tdep.size_ustat = 32;
loongarch_linux_record_tdep.size_old_sigaction = 32;
loongarch_linux_record_tdep.size_old_sigset_t = 8;
loongarch_linux_record_tdep.size_rlimit = 16;
loongarch_linux_record_tdep.size_rusage = 144;
loongarch_linux_record_tdep.size_timeval = 16;
loongarch_linux_record_tdep.size_timezone = 8;
loongarch_linux_record_tdep.size_old_gid_t = 4;
loongarch_linux_record_tdep.size_old_uid_t = 4;
loongarch_linux_record_tdep.size_fd_set = 128;
loongarch_linux_record_tdep.size_old_dirent = 280;
loongarch_linux_record_tdep.size_statfs = 120;
loongarch_linux_record_tdep.size_statfs64 = 120;
loongarch_linux_record_tdep.size_sockaddr = 16;
loongarch_linux_record_tdep.size_int
= gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT;
loongarch_linux_record_tdep.size_long
= gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT;
loongarch_linux_record_tdep.size_ulong
= gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT;
loongarch_linux_record_tdep.size_msghdr = 56;
loongarch_linux_record_tdep.size_itimerval = 32;
loongarch_linux_record_tdep.size_stat = 144;
loongarch_linux_record_tdep.size_old_utsname = 325;
loongarch_linux_record_tdep.size_sysinfo = 112;
loongarch_linux_record_tdep.size_msqid_ds = 120;
loongarch_linux_record_tdep.size_shmid_ds = 112;
loongarch_linux_record_tdep.size_new_utsname = 390;
loongarch_linux_record_tdep.size_timex = 208;
loongarch_linux_record_tdep.size_mem_dqinfo = 72;
loongarch_linux_record_tdep.size_if_dqblk = 72;
loongarch_linux_record_tdep.size_fs_quota_stat = 80;
loongarch_linux_record_tdep.size_timespec = 16;
loongarch_linux_record_tdep.size_pollfd = 8;
loongarch_linux_record_tdep.size_NFS_FHSIZE = 32;
loongarch_linux_record_tdep.size_knfsd_fh = 132;
loongarch_linux_record_tdep.size_TASK_COMM_LEN = 16;
loongarch_linux_record_tdep.size_sigaction = 24;
loongarch_linux_record_tdep.size_sigset_t = 8;
loongarch_linux_record_tdep.size_siginfo_t = 128;
loongarch_linux_record_tdep.size_cap_user_data_t = 8;
loongarch_linux_record_tdep.size_stack_t = 24;
loongarch_linux_record_tdep.size_off_t = 8;
loongarch_linux_record_tdep.size_stat64 = 144;
loongarch_linux_record_tdep.size_gid_t = 4;
loongarch_linux_record_tdep.size_uid_t = 4;
loongarch_linux_record_tdep.size_PAGE_SIZE = 0x4000;
loongarch_linux_record_tdep.size_flock64 = 32;
loongarch_linux_record_tdep.size_user_desc = 16;
loongarch_linux_record_tdep.size_io_event = 32;
loongarch_linux_record_tdep.size_iocb = 64;
loongarch_linux_record_tdep.size_epoll_event = 12;
loongarch_linux_record_tdep.size_itimerspec = 32;
loongarch_linux_record_tdep.size_mq_attr = 64;
loongarch_linux_record_tdep.size_termios = 36;
loongarch_linux_record_tdep.size_termios2 = 44;
loongarch_linux_record_tdep.size_pid_t = 4;
loongarch_linux_record_tdep.size_winsize = 8;
loongarch_linux_record_tdep.size_serial_struct = 72;
loongarch_linux_record_tdep.size_serial_icounter_struct = 80;
loongarch_linux_record_tdep.size_hayes_esp_config = 12;
loongarch_linux_record_tdep.size_size_t = 8;
loongarch_linux_record_tdep.size_iovec = 16;
loongarch_linux_record_tdep.size_time_t = 8;
/* These values are the second argument of system call "sys_ioctl".
They are obtained from Linux Kernel source. */
loongarch_linux_record_tdep.ioctl_TCGETS = 0x5401;
loongarch_linux_record_tdep.ioctl_TCSETS = 0x5402;
loongarch_linux_record_tdep.ioctl_TCSETSW = 0x5403;
loongarch_linux_record_tdep.ioctl_TCSETSF = 0x5404;
loongarch_linux_record_tdep.ioctl_TCGETA = 0x5405;
loongarch_linux_record_tdep.ioctl_TCSETA = 0x5406;
loongarch_linux_record_tdep.ioctl_TCSETAW = 0x5407;
loongarch_linux_record_tdep.ioctl_TCSETAF = 0x5408;
loongarch_linux_record_tdep.ioctl_TCSBRK = 0x5409;
loongarch_linux_record_tdep.ioctl_TCXONC = 0x540a;
loongarch_linux_record_tdep.ioctl_TCFLSH = 0x540b;
loongarch_linux_record_tdep.ioctl_TIOCEXCL = 0x540c;
loongarch_linux_record_tdep.ioctl_TIOCNXCL = 0x540d;
loongarch_linux_record_tdep.ioctl_TIOCSCTTY = 0x540e;
loongarch_linux_record_tdep.ioctl_TIOCGPGRP = 0x540f;
loongarch_linux_record_tdep.ioctl_TIOCSPGRP = 0x5410;
loongarch_linux_record_tdep.ioctl_TIOCOUTQ = 0x5411;
loongarch_linux_record_tdep.ioctl_TIOCSTI = 0x5412;
loongarch_linux_record_tdep.ioctl_TIOCGWINSZ = 0x5413;
loongarch_linux_record_tdep.ioctl_TIOCSWINSZ = 0x5414;
loongarch_linux_record_tdep.ioctl_TIOCMGET = 0x5415;
loongarch_linux_record_tdep.ioctl_TIOCMBIS = 0x5416;
loongarch_linux_record_tdep.ioctl_TIOCMBIC = 0x5417;
loongarch_linux_record_tdep.ioctl_TIOCMSET = 0x5418;
loongarch_linux_record_tdep.ioctl_TIOCGSOFTCAR = 0x5419;
loongarch_linux_record_tdep.ioctl_TIOCSSOFTCAR = 0x541a;
loongarch_linux_record_tdep.ioctl_FIONREAD = 0x541b;
loongarch_linux_record_tdep.ioctl_TIOCINQ = 0x541b;
loongarch_linux_record_tdep.ioctl_TIOCLINUX = 0x541c;
loongarch_linux_record_tdep.ioctl_TIOCCONS = 0x541d;
loongarch_linux_record_tdep.ioctl_TIOCGSERIAL = 0x541e;
loongarch_linux_record_tdep.ioctl_TIOCSSERIAL = 0x541f;
loongarch_linux_record_tdep.ioctl_TIOCPKT = 0x5420;
loongarch_linux_record_tdep.ioctl_FIONBIO = 0x5421;
loongarch_linux_record_tdep.ioctl_TIOCNOTTY = 0x5422;
loongarch_linux_record_tdep.ioctl_TIOCSETD = 0x5423;
loongarch_linux_record_tdep.ioctl_TIOCGETD = 0x5424;
loongarch_linux_record_tdep.ioctl_TCSBRKP = 0x5425;
loongarch_linux_record_tdep.ioctl_TIOCTTYGSTRUCT = 0x5426;
loongarch_linux_record_tdep.ioctl_TIOCSBRK = 0x5427;
loongarch_linux_record_tdep.ioctl_TIOCCBRK = 0x5428;
loongarch_linux_record_tdep.ioctl_TIOCGSID = 0x5429;
loongarch_linux_record_tdep.ioctl_TCGETS2 = 0x802c542a;
loongarch_linux_record_tdep.ioctl_TCSETS2 = 0x402c542b;
loongarch_linux_record_tdep.ioctl_TCSETSW2 = 0x402c542c;
loongarch_linux_record_tdep.ioctl_TCSETSF2 = 0x402c542d;
loongarch_linux_record_tdep.ioctl_TIOCGPTN = 0x80045430;
loongarch_linux_record_tdep.ioctl_TIOCSPTLCK = 0x40045431;
loongarch_linux_record_tdep.ioctl_FIONCLEX = 0x5450;
loongarch_linux_record_tdep.ioctl_FIOCLEX = 0x5451;
loongarch_linux_record_tdep.ioctl_FIOASYNC = 0x5452;
loongarch_linux_record_tdep.ioctl_TIOCSERCONFIG = 0x5453;
loongarch_linux_record_tdep.ioctl_TIOCSERGWILD = 0x5454;
loongarch_linux_record_tdep.ioctl_TIOCSERSWILD = 0x5455;
loongarch_linux_record_tdep.ioctl_TIOCGLCKTRMIOS = 0x5456;
loongarch_linux_record_tdep.ioctl_TIOCSLCKTRMIOS = 0x5457;
loongarch_linux_record_tdep.ioctl_TIOCSERGSTRUCT = 0x5458;
loongarch_linux_record_tdep.ioctl_TIOCSERGETLSR = 0x5459;
loongarch_linux_record_tdep.ioctl_TIOCSERGETMULTI = 0x545a;
loongarch_linux_record_tdep.ioctl_TIOCSERSETMULTI = 0x545b;
loongarch_linux_record_tdep.ioctl_TIOCMIWAIT = 0x545c;
loongarch_linux_record_tdep.ioctl_TIOCGICOUNT = 0x545d;
loongarch_linux_record_tdep.ioctl_TIOCGHAYESESP = 0x545e;
loongarch_linux_record_tdep.ioctl_TIOCSHAYESESP = 0x545f;
loongarch_linux_record_tdep.ioctl_FIOQSIZE = 0x5460;
/* These values are the second argument of system call "sys_fcntl"
and "sys_fcntl64". They are obtained from Linux Kernel source. */
loongarch_linux_record_tdep.fcntl_F_GETLK = 5;
loongarch_linux_record_tdep.fcntl_F_GETLK64 = 12;
loongarch_linux_record_tdep.fcntl_F_SETLK64 = 13;
loongarch_linux_record_tdep.fcntl_F_SETLKW64 = 14;
loongarch_linux_record_tdep.arg1 = LOONGARCH_A0_REGNUM + 0;
loongarch_linux_record_tdep.arg2 = LOONGARCH_A0_REGNUM + 1;
loongarch_linux_record_tdep.arg3 = LOONGARCH_A0_REGNUM + 2;
loongarch_linux_record_tdep.arg4 = LOONGARCH_A0_REGNUM + 3;
loongarch_linux_record_tdep.arg5 = LOONGARCH_A0_REGNUM + 4;
loongarch_linux_record_tdep.arg6 = LOONGARCH_A0_REGNUM + 5;
loongarch_linux_record_tdep.arg7 = LOONGARCH_A0_REGNUM + 6;
}
/* Initialize LoongArch Linux ABI info. */
static void
loongarch_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
loongarch_gdbarch_tdep *tdep = gdbarch_tdep<loongarch_gdbarch_tdep> (gdbarch);
linux_init_abi (info, gdbarch, 0);
set_solib_svr4_ops (gdbarch, (info.bfd_arch_info->bits_per_address == 32
? make_linux_ilp32_svr4_solib_ops
: make_linux_lp64_svr4_solib_ops));
/* GNU/Linux uses SVR4-style shared libraries. */
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
/* GNU/Linux uses the dynamic linker included in the GNU C Library. */
set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
/* Enable TLS support. */
set_gdbarch_fetch_tls_load_module_address (gdbarch, svr4_fetch_objfile_link_map);
/* Prepend tramp frame unwinder for signal. */
tramp_frame_prepend_unwinder (gdbarch, &loongarch_linux_rt_sigframe);
/* Core file support. */
set_gdbarch_iterate_over_regset_sections (gdbarch, loongarch_iterate_over_regset_sections);
tdep->syscall_next_pc = loongarch_linux_syscall_next_pc;
/* Set the correct XML syscall filename. */
set_xml_syscall_file_name (gdbarch, XML_SYSCALL_FILENAME_LOONGARCH);
/* Get the syscall number from the arch's register. */
set_gdbarch_get_syscall_number (gdbarch, loongarch_linux_get_syscall_number);
/* Reversible debugging, process record. */
set_gdbarch_process_record (gdbarch, loongarch_process_record);
/* Syscall record. */
tdep->loongarch_syscall_record = loongarch_linux_syscall_record;
init_loongarch_linux_record_tdep (gdbarch);
}
/* Initialize LoongArch Linux target support. */
INIT_GDB_FILE (loongarch_linux_tdep)
{
gdbarch_register_osabi (bfd_arch_loongarch, bfd_mach_loongarch32,
GDB_OSABI_LINUX, loongarch_linux_init_abi);
gdbarch_register_osabi (bfd_arch_loongarch, bfd_mach_loongarch64,
GDB_OSABI_LINUX, loongarch_linux_init_abi);
}
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