mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-27 22:10:32 +00:00
Adding aarch64-linux-tdep support.
2013-02-04 Jim MacArthur <jim.macarthur@arm.com>
Marcus Shawcroft <marcus.shawcroft@arm.com>
Nigel Stephens <nigel.stephens@arm.com>
Yufeng Zhang <yufeng.zhang@arm.com>
* Makefile.in (ALL_64_TARGET_OBS): Add aarch64-linux-tdep.o.
(ALLDEPFILES): Add aarch64-linux-tdep.c.
* aarch64-linux-tdep.c: New file.
* aarch64-linux-tdep.h: New file.
* aarch64-tdep.h (gdbarch_tdep): Define gregset and fpregset.
* configure.tgt: Add aarch64-none-linux-gnu.
This commit is contained in:
Marcus Shawcroft
parent
07b287a0d1
commit
1ae3db1961
@ -1,3 +1,15 @@
|
||||
2013-02-04 Jim MacArthur <jim.macarthur@arm.com>
|
||||
Marcus Shawcroft <marcus.shawcroft@arm.com>
|
||||
Nigel Stephens <nigel.stephens@arm.com>
|
||||
Yufeng Zhang <yufeng.zhang@arm.com>
|
||||
|
||||
* Makefile.in (ALL_64_TARGET_OBS): Add aarch64-linux-tdep.o.
|
||||
(ALLDEPFILES): Add aarch64-linux-tdep.c.
|
||||
* aarch64-linux-tdep.c: New file.
|
||||
* aarch64-linux-tdep.h: New file.
|
||||
* aarch64-tdep.h (gdbarch_tdep): Define gregset and fpregset.
|
||||
* configure.tgt: Add aarch64-none-linux-gnu.
|
||||
|
||||
2013-02-04 Jim MacArthur <jim.macarthur@arm.com>
|
||||
Marcus Shawcroft <marcus.shawcroft@arm.com>
|
||||
Nigel Stephens <nigel.stephens@arm.com>
|
||||
|
||||
@ -521,7 +521,7 @@ TARGET_OBS = @TARGET_OBS@
|
||||
# All target-dependent objects files that require 64-bit CORE_ADDR
|
||||
# (used with --enable-targets=all --enable-64-bit-bfd).
|
||||
ALL_64_TARGET_OBS = \
|
||||
aarch64-tdep.o \
|
||||
aarch64-tdep.o aarch64-linux-tdep.o \
|
||||
alphabsd-tdep.o alphafbsd-tdep.o alpha-linux-tdep.o alpha-mdebug-tdep.o \
|
||||
alphanbsd-tdep.o alphaobsd-tdep.o alpha-osf1-tdep.o alpha-tdep.o \
|
||||
amd64fbsd-tdep.o amd64-darwin-tdep.o amd64-dicos-tdep.o \
|
||||
@ -1421,7 +1421,7 @@ force_update:
|
||||
MAKEOVERRIDES=
|
||||
|
||||
ALLDEPFILES = \
|
||||
aarch64-tdep.c \
|
||||
aarch64-tdep.c aarch64-linux-tdep.c \
|
||||
aix-thread.c \
|
||||
alpha-nat.c alphabsd-nat.c alpha-linux-nat.c \
|
||||
alpha-tdep.c alpha-mdebug-tdep.c \
|
||||
|
||||
297
gdb/aarch64-linux-tdep.c
Normal file
297
gdb/aarch64-linux-tdep.c
Normal file
@ -0,0 +1,297 @@
|
||||
/* Target-dependent code for GNU/Linux AArch64.
|
||||
|
||||
Copyright (C) 2009-2013 Free Software Foundation, Inc.
|
||||
Contributed by ARM 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 "defs.h"
|
||||
|
||||
#include "gdbarch.h"
|
||||
#include "glibc-tdep.h"
|
||||
#include "linux-tdep.h"
|
||||
#include "aarch64-tdep.h"
|
||||
#include "aarch64-linux-tdep.h"
|
||||
#include "osabi.h"
|
||||
#include "solib-svr4.h"
|
||||
#include "symtab.h"
|
||||
#include "tramp-frame.h"
|
||||
#include "trad-frame.h"
|
||||
|
||||
#include "inferior.h"
|
||||
#include "regcache.h"
|
||||
#include "regset.h"
|
||||
|
||||
/* The general-purpose regset consists of 31 X registers, plus SP, PC,
|
||||
PSTATE and two extra pseudo 64-bit registers, as defined in the
|
||||
AArch64 port of the Linux kernel. */
|
||||
#define AARCH64_LINUX_SIZEOF_GREGSET (36 * X_REGISTER_SIZE)
|
||||
|
||||
/* The fp regset consists of 32 V registers, plus FPCR and FPSR which
|
||||
are 4 bytes wide each, and the whole structure is padded to 128 bit
|
||||
alignment. */
|
||||
#define AARCH64_LINUX_SIZEOF_FPREGSET (33 * V_REGISTER_SIZE)
|
||||
|
||||
/* Signal frame handling.
|
||||
|
||||
+----------+ ^
|
||||
| saved lr | |
|
||||
+->| saved fp |--+
|
||||
| | |
|
||||
| | |
|
||||
| +----------+
|
||||
| | saved lr |
|
||||
+--| saved fp |
|
||||
^ | |
|
||||
| | |
|
||||
| +----------+
|
||||
^ | |
|
||||
| | signal |
|
||||
| | |
|
||||
| | saved lr |-->interrupted_function_pc
|
||||
+--| saved fp |
|
||||
| +----------+
|
||||
| | saved lr |--> default_restorer (movz x8, NR_sys_rt_sigreturn; svc 0)
|
||||
+--| saved fp |<- FP
|
||||
| |
|
||||
| |<- SP
|
||||
+----------+
|
||||
|
||||
On signal delivery, the kernel will create a signal handler stack
|
||||
frame and setup the return address in LR to point at restorer stub.
|
||||
The signal stack frame is defined by:
|
||||
|
||||
struct rt_sigframe
|
||||
{
|
||||
siginfo_t info;
|
||||
struct ucontext uc;
|
||||
};
|
||||
|
||||
typedef struct
|
||||
{
|
||||
... 128 bytes
|
||||
} siginfo_t;
|
||||
|
||||
The ucontext has the following form:
|
||||
struct ucontext
|
||||
{
|
||||
unsigned long uc_flags;
|
||||
struct ucontext *uc_link;
|
||||
stack_t uc_stack;
|
||||
sigset_t uc_sigmask;
|
||||
struct sigcontext uc_mcontext;
|
||||
};
|
||||
|
||||
typedef struct sigaltstack
|
||||
{
|
||||
void *ss_sp;
|
||||
int ss_flags;
|
||||
size_t ss_size;
|
||||
} stack_t;
|
||||
|
||||
struct sigcontext
|
||||
{
|
||||
unsigned long fault_address;
|
||||
unsigned long regs[31];
|
||||
unsigned long sp; / * 31 * /
|
||||
unsigned long pc; / * 32 * /
|
||||
unsigned long pstate; / * 33 * /
|
||||
__u8 __reserved[4096]
|
||||
};
|
||||
|
||||
The restorer stub will always have the form:
|
||||
|
||||
d28015a8 movz x8, #0xad
|
||||
d4000001 svc #0x0
|
||||
|
||||
We detect signal frames by snooping the return code for the restorer
|
||||
instruction sequence.
|
||||
|
||||
The handler then needs to recover the saved register set from
|
||||
ucontext.uc_mcontext. */
|
||||
|
||||
/* These magic numbers need to reflect the layout of the kernel
|
||||
defined struct rt_sigframe and ucontext. */
|
||||
#define AARCH64_SIGCONTEXT_REG_SIZE 8
|
||||
#define AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET 128
|
||||
#define AARCH64_UCONTEXT_SIGCONTEXT_OFFSET 176
|
||||
#define AARCH64_SIGCONTEXT_XO_OFFSET 8
|
||||
|
||||
/* Implement the "init" method of struct tramp_frame. */
|
||||
|
||||
static void
|
||||
aarch64_linux_sigframe_init (const struct tramp_frame *self,
|
||||
struct frame_info *this_frame,
|
||||
struct trad_frame_cache *this_cache,
|
||||
CORE_ADDR func)
|
||||
{
|
||||
struct gdbarch *gdbarch = get_frame_arch (this_frame);
|
||||
CORE_ADDR sp = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM);
|
||||
CORE_ADDR fp = get_frame_register_unsigned (this_frame, AARCH64_FP_REGNUM);
|
||||
CORE_ADDR sigcontext_addr =
|
||||
sp
|
||||
+ AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET
|
||||
+ AARCH64_UCONTEXT_SIGCONTEXT_OFFSET;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 31; i++)
|
||||
{
|
||||
trad_frame_set_reg_addr (this_cache,
|
||||
AARCH64_X0_REGNUM + i,
|
||||
sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET
|
||||
+ i * AARCH64_SIGCONTEXT_REG_SIZE);
|
||||
}
|
||||
|
||||
trad_frame_set_reg_addr (this_cache, AARCH64_FP_REGNUM, fp);
|
||||
trad_frame_set_reg_addr (this_cache, AARCH64_LR_REGNUM, fp + 8);
|
||||
trad_frame_set_reg_addr (this_cache, AARCH64_PC_REGNUM, fp + 8);
|
||||
|
||||
trad_frame_set_id (this_cache, frame_id_build (fp, func));
|
||||
}
|
||||
|
||||
static const struct tramp_frame aarch64_linux_rt_sigframe =
|
||||
{
|
||||
SIGTRAMP_FRAME,
|
||||
4,
|
||||
{
|
||||
/* movz x8, 0x8b (S=1,o=10,h=0,i=0x8b,r=8)
|
||||
Soo1 0010 1hhi iiii iiii iiii iiir rrrr */
|
||||
{0xd2801168, -1},
|
||||
|
||||
/* svc 0x0 (o=0, l=1)
|
||||
1101 0100 oooi iiii iiii iiii iii0 00ll */
|
||||
{0xd4000001, -1},
|
||||
{TRAMP_SENTINEL_INSN, -1}
|
||||
},
|
||||
aarch64_linux_sigframe_init
|
||||
};
|
||||
|
||||
/* Fill GDB's register array with the general-purpose register values
|
||||
in the buffer pointed by GREGS_BUF. */
|
||||
|
||||
void
|
||||
aarch64_linux_supply_gregset (struct regcache *regcache,
|
||||
const gdb_byte *gregs_buf)
|
||||
{
|
||||
int regno;
|
||||
|
||||
for (regno = AARCH64_X0_REGNUM; regno <= AARCH64_CPSR_REGNUM; regno++)
|
||||
regcache_raw_supply (regcache, regno,
|
||||
gregs_buf + X_REGISTER_SIZE
|
||||
* (regno - AARCH64_X0_REGNUM));
|
||||
}
|
||||
|
||||
/* The "supply_regset" function for the general-purpose register set. */
|
||||
|
||||
static void
|
||||
supply_gregset_from_core (const struct regset *regset,
|
||||
struct regcache *regcache,
|
||||
int regnum, const void *regbuf, size_t len)
|
||||
{
|
||||
aarch64_linux_supply_gregset (regcache, (const gdb_byte *) regbuf);
|
||||
}
|
||||
|
||||
/* Fill GDB's register array with the floating-point register values
|
||||
in the buffer pointed by FPREGS_BUF. */
|
||||
|
||||
void
|
||||
aarch64_linux_supply_fpregset (struct regcache *regcache,
|
||||
const gdb_byte *fpregs_buf)
|
||||
{
|
||||
int regno;
|
||||
|
||||
for (regno = AARCH64_V0_REGNUM; regno <= AARCH64_V31_REGNUM; regno++)
|
||||
regcache_raw_supply (regcache, regno,
|
||||
fpregs_buf + V_REGISTER_SIZE
|
||||
* (regno - AARCH64_V0_REGNUM));
|
||||
|
||||
regcache_raw_supply (regcache, AARCH64_FPSR_REGNUM,
|
||||
fpregs_buf + V_REGISTER_SIZE * 32);
|
||||
regcache_raw_supply (regcache, AARCH64_FPCR_REGNUM,
|
||||
fpregs_buf + V_REGISTER_SIZE * 32 + 4);
|
||||
}
|
||||
|
||||
/* The "supply_regset" function for the floating-point register set. */
|
||||
|
||||
static void
|
||||
supply_fpregset_from_core (const struct regset *regset,
|
||||
struct regcache *regcache,
|
||||
int regnum, const void *regbuf, size_t len)
|
||||
{
|
||||
aarch64_linux_supply_fpregset (regcache, (const gdb_byte *) regbuf);
|
||||
}
|
||||
|
||||
/* Implement the "regset_from_core_section" gdbarch method. */
|
||||
|
||||
static const struct regset *
|
||||
aarch64_linux_regset_from_core_section (struct gdbarch *gdbarch,
|
||||
const char *sect_name,
|
||||
size_t sect_size)
|
||||
{
|
||||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||||
|
||||
if (strcmp (sect_name, ".reg") == 0
|
||||
&& sect_size == AARCH64_LINUX_SIZEOF_GREGSET)
|
||||
{
|
||||
if (tdep->gregset == NULL)
|
||||
tdep->gregset = regset_alloc (gdbarch, supply_gregset_from_core,
|
||||
NULL);
|
||||
return tdep->gregset;
|
||||
}
|
||||
|
||||
if (strcmp (sect_name, ".reg2") == 0
|
||||
&& sect_size == AARCH64_LINUX_SIZEOF_FPREGSET)
|
||||
{
|
||||
if (tdep->fpregset == NULL)
|
||||
tdep->fpregset = regset_alloc (gdbarch, supply_fpregset_from_core,
|
||||
NULL);
|
||||
return tdep->fpregset;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
{
|
||||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||||
|
||||
tdep->lowest_pc = 0x8000;
|
||||
|
||||
set_solib_svr4_fetch_link_map_offsets (gdbarch,
|
||||
svr4_lp64_fetch_link_map_offsets);
|
||||
|
||||
/* Shared library handling. */
|
||||
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
|
||||
|
||||
set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
|
||||
tramp_frame_prepend_unwinder (gdbarch, &aarch64_linux_rt_sigframe);
|
||||
|
||||
/* Enable longjmp. */
|
||||
tdep->jb_pc = 11;
|
||||
|
||||
set_gdbarch_regset_from_core_section (gdbarch,
|
||||
aarch64_linux_regset_from_core_section);
|
||||
}
|
||||
|
||||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||||
extern initialize_file_ftype _initialize_aarch64_linux_tdep;
|
||||
|
||||
void
|
||||
_initialize_aarch64_linux_tdep (void)
|
||||
{
|
||||
gdbarch_register_osabi (bfd_arch_aarch64, 0, GDB_OSABI_LINUX,
|
||||
aarch64_linux_init_abi);
|
||||
}
|
||||
26
gdb/aarch64-linux-tdep.h
Normal file
26
gdb/aarch64-linux-tdep.h
Normal file
@ -0,0 +1,26 @@
|
||||
/* GNU/Linux on AArch64 target support, prototypes.
|
||||
|
||||
Copyright (C) 2012-2013 Free Software Foundation, Inc.
|
||||
Contributed by ARM 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/>. */
|
||||
|
||||
struct regcache;
|
||||
|
||||
extern void aarch64_linux_supply_gregset (struct regcache *regcache,
|
||||
const gdb_byte *gregs_buf);
|
||||
extern void aarch64_linux_supply_fpregset (struct regcache *regcache,
|
||||
const gdb_byte *fpregs_buf);
|
||||
@ -82,6 +82,10 @@ struct gdbarch_tdep
|
||||
/* And the size of each entry in the buf. */
|
||||
size_t jb_elt_size;
|
||||
|
||||
/* Cached core file helpers. */
|
||||
struct regset *gregset;
|
||||
struct regset *fpregset;
|
||||
|
||||
/* Types for AdvSISD registers. */
|
||||
struct type *vnq_type;
|
||||
struct type *vnd_type;
|
||||
|
||||
@ -36,6 +36,12 @@ aarch64*-*-elf)
|
||||
gdb_target_obs="aarch64-tdep.o"
|
||||
;;
|
||||
|
||||
aarch64*-*-linux*)
|
||||
# Target: AArch64 linux
|
||||
gdb_target_obs="aarch64-tdep.o aarch64-linux-tdep.o \
|
||||
glibc-tdep.o linux-tdep.o solib-svr4.o \
|
||||
symfile-mem.o"
|
||||
;;
|
||||
|
||||
alpha*-*-osf*)
|
||||
# Target: Little-endian Alpha running OSF/1
|
||||
|
||||
Loading…
Reference in New Issue
Block a user