mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-06 00:34:26 +08:00
4de283e4b5
Andreas Schwab and John Baldwin pointed out some bugs in the header sorting patch; and I noticed that the output was not correct when limited to a subset of files (a bug in my script). So, I'm reverting the patch. I may try again after fixing the issues pointed out. gdb/ChangeLog 2019-04-05 Tom Tromey <tom@tromey.com> Revert the header-sorting patch. * ft32-tdep.c: Revert. * frv-tdep.c: Revert. * frv-linux-tdep.c: Revert. * frame.c: Revert. * frame-unwind.c: Revert. * frame-base.c: Revert. * fork-child.c: Revert. * findvar.c: Revert. * findcmd.c: Revert. * filesystem.c: Revert. * filename-seen-cache.h: Revert. * filename-seen-cache.c: Revert. * fbsd-tdep.c: Revert. * fbsd-nat.h: Revert. * fbsd-nat.c: Revert. * f-valprint.c: Revert. * f-typeprint.c: Revert. * f-lang.c: Revert. * extension.h: Revert. * extension.c: Revert. * extension-priv.h: Revert. * expprint.c: Revert. * exec.h: Revert. * exec.c: Revert. * exceptions.c: Revert. * event-top.c: Revert. * event-loop.c: Revert. * eval.c: Revert. * elfread.c: Revert. * dwarf2read.h: Revert. * dwarf2read.c: Revert. * dwarf2loc.c: Revert. * dwarf2expr.h: Revert. * dwarf2expr.c: Revert. * dwarf2-frame.c: Revert. * dwarf2-frame-tailcall.c: Revert. * dwarf-index-write.h: Revert. * dwarf-index-write.c: Revert. * dwarf-index-common.c: Revert. * dwarf-index-cache.h: Revert. * dwarf-index-cache.c: Revert. * dummy-frame.c: Revert. * dtrace-probe.c: Revert. * disasm.h: Revert. * disasm.c: Revert. * disasm-selftests.c: Revert. * dictionary.c: Revert. * dicos-tdep.c: Revert. * demangle.c: Revert. * dcache.h: Revert. * dcache.c: Revert. * darwin-nat.h: Revert. * darwin-nat.c: Revert. * darwin-nat-info.c: Revert. * d-valprint.c: Revert. * d-namespace.c: Revert. * d-lang.c: Revert. * ctf.c: Revert. * csky-tdep.c: Revert. * csky-linux-tdep.c: Revert. * cris-tdep.c: Revert. * cris-linux-tdep.c: Revert. * cp-valprint.c: Revert. * cp-support.c: Revert. * cp-namespace.c: Revert. * cp-abi.c: Revert. * corelow.c: Revert. * corefile.c: Revert. * continuations.c: Revert. * completer.h: Revert. * completer.c: Revert. * complaints.c: Revert. * coffread.c: Revert. * coff-pe-read.c: Revert. * cli-out.h: Revert. * cli-out.c: Revert. * charset.c: Revert. * c-varobj.c: Revert. * c-valprint.c: Revert. * c-typeprint.c: Revert. * c-lang.c: Revert. * buildsym.c: Revert. * buildsym-legacy.c: Revert. * build-id.h: Revert. * build-id.c: Revert. * btrace.c: Revert. * bsd-uthread.c: Revert. * breakpoint.h: Revert. * breakpoint.c: Revert. * break-catch-throw.c: Revert. * break-catch-syscall.c: Revert. * break-catch-sig.c: Revert. * blockframe.c: Revert. * block.c: Revert. * bfin-tdep.c: Revert. * bfin-linux-tdep.c: Revert. * bfd-target.c: Revert. * bcache.c: Revert. * ax-general.c: Revert. * ax-gdb.h: Revert. * ax-gdb.c: Revert. * avr-tdep.c: Revert. * auxv.c: Revert. * auto-load.c: Revert. * arm-wince-tdep.c: Revert. * arm-tdep.c: Revert. * arm-symbian-tdep.c: Revert. * arm-pikeos-tdep.c: Revert. * arm-obsd-tdep.c: Revert. * arm-nbsd-tdep.c: Revert. * arm-nbsd-nat.c: Revert. * arm-linux-tdep.c: Revert. * arm-linux-nat.c: Revert. * arm-fbsd-tdep.c: Revert. * arm-fbsd-nat.c: Revert. * arm-bsd-tdep.c: Revert. * arch-utils.c: Revert. * arc-tdep.c: Revert. * arc-newlib-tdep.c: Revert. * annotate.h: Revert. * annotate.c: Revert. * amd64-windows-tdep.c: Revert. * amd64-windows-nat.c: Revert. * amd64-tdep.c: Revert. * amd64-sol2-tdep.c: Revert. * amd64-obsd-tdep.c: Revert. * amd64-obsd-nat.c: Revert. * amd64-nbsd-tdep.c: Revert. * amd64-nbsd-nat.c: Revert. * amd64-nat.c: Revert. * amd64-linux-tdep.c: Revert. * amd64-linux-nat.c: Revert. * amd64-fbsd-tdep.c: Revert. * amd64-fbsd-nat.c: Revert. * amd64-dicos-tdep.c: Revert. * amd64-darwin-tdep.c: Revert. * amd64-bsd-nat.c: Revert. * alpha-tdep.c: Revert. * alpha-obsd-tdep.c: Revert. * alpha-nbsd-tdep.c: Revert. * alpha-mdebug-tdep.c: Revert. * alpha-linux-tdep.c: Revert. * alpha-linux-nat.c: Revert. * alpha-bsd-tdep.c: Revert. * alpha-bsd-nat.c: Revert. * aix-thread.c: Revert. * agent.c: Revert. * addrmap.c: Revert. * ada-varobj.c: Revert. * ada-valprint.c: Revert. * ada-typeprint.c: Revert. * ada-tasks.c: Revert. * ada-lang.c: Revert. * aarch64-tdep.c: Revert. * aarch64-ravenscar-thread.c: Revert. * aarch64-newlib-tdep.c: Revert. * aarch64-linux-tdep.c: Revert. * aarch64-linux-nat.c: Revert. * aarch64-fbsd-tdep.c: Revert. * aarch64-fbsd-nat.c: Revert. * aarch32-linux-nat.c: Revert.
242 lines
6.5 KiB
C
242 lines
6.5 KiB
C
/* Target-dependent code for FreeBSD/arm.
|
|
|
|
Copyright (C) 2017-2019 Free Software Foundation, Inc.
|
|
|
|
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 "elf/common.h"
|
|
#include "arm-tdep.h"
|
|
#include "arm-fbsd-tdep.h"
|
|
#include "auxv.h"
|
|
#include "fbsd-tdep.h"
|
|
#include "gdbcore.h"
|
|
#include "osabi.h"
|
|
#include "solib-svr4.h"
|
|
#include "trad-frame.h"
|
|
#include "tramp-frame.h"
|
|
|
|
/* Register maps. */
|
|
|
|
static const struct regcache_map_entry arm_fbsd_gregmap[] =
|
|
{
|
|
{ 13, ARM_A1_REGNUM, 4 }, /* r0 ... r12 */
|
|
{ 1, ARM_SP_REGNUM, 4 },
|
|
{ 1, ARM_LR_REGNUM, 4 },
|
|
{ 1, ARM_PC_REGNUM, 4 },
|
|
{ 1, ARM_PS_REGNUM, 4 },
|
|
{ 0 }
|
|
};
|
|
|
|
static const struct regcache_map_entry arm_fbsd_vfpregmap[] =
|
|
{
|
|
{ 32, ARM_D0_REGNUM, 8 }, /* d0 ... d31 */
|
|
{ 1, ARM_FPSCR_REGNUM, 4 },
|
|
{ 0 }
|
|
};
|
|
|
|
/* In a signal frame, sp points to a 'struct sigframe' which is
|
|
defined as:
|
|
|
|
struct sigframe {
|
|
siginfo_t sf_si;
|
|
ucontext_t sf_uc;
|
|
mcontext_vfp_t sf_vfp;
|
|
};
|
|
|
|
ucontext_t is defined as:
|
|
|
|
struct __ucontext {
|
|
sigset_t uc_sigmask;
|
|
mcontext_t uc_mcontext;
|
|
...
|
|
};
|
|
|
|
mcontext_t is defined as:
|
|
|
|
struct {
|
|
unsigned int __gregs[17];
|
|
size_t mc_vfp_size;
|
|
void *mc_vfp_ptr;
|
|
...
|
|
};
|
|
|
|
mcontext_vfp_t is defined as:
|
|
|
|
struct {
|
|
uint64_t mcv_reg[32];
|
|
uint32_t mcv_fpscr;
|
|
};
|
|
|
|
If the VFP state is valid, then mc_vfp_ptr will point to sf_vfp in
|
|
the sigframe, otherwise it is NULL. There is no non-VFP floating
|
|
point register state saved in the signal frame. */
|
|
|
|
#define ARM_SIGFRAME_UCONTEXT_OFFSET 64
|
|
#define ARM_UCONTEXT_MCONTEXT_OFFSET 16
|
|
#define ARM_MCONTEXT_VFP_PTR_OFFSET 72
|
|
|
|
/* Implement the "init" method of struct tramp_frame. */
|
|
|
|
static void
|
|
arm_fbsd_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);
|
|
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
|
CORE_ADDR sp = get_frame_register_unsigned (this_frame, ARM_SP_REGNUM);
|
|
CORE_ADDR mcontext_addr = (sp
|
|
+ ARM_SIGFRAME_UCONTEXT_OFFSET
|
|
+ ARM_UCONTEXT_MCONTEXT_OFFSET);
|
|
ULONGEST mcontext_vfp_addr;
|
|
|
|
trad_frame_set_reg_regmap (this_cache, arm_fbsd_gregmap, mcontext_addr,
|
|
regcache_map_entry_size (arm_fbsd_gregmap));
|
|
|
|
if (safe_read_memory_unsigned_integer (mcontext_addr
|
|
+ ARM_MCONTEXT_VFP_PTR_OFFSET, 4,
|
|
byte_order,
|
|
&mcontext_vfp_addr)
|
|
&& mcontext_vfp_addr != 0)
|
|
trad_frame_set_reg_regmap (this_cache, arm_fbsd_vfpregmap, mcontext_vfp_addr,
|
|
regcache_map_entry_size (arm_fbsd_vfpregmap));
|
|
|
|
trad_frame_set_id (this_cache, frame_id_build (sp, func));
|
|
}
|
|
|
|
static const struct tramp_frame arm_fbsd_sigframe =
|
|
{
|
|
SIGTRAMP_FRAME,
|
|
4,
|
|
{
|
|
{0xe1a0000d, ULONGEST_MAX}, /* mov r0, sp */
|
|
{0xe2800040, ULONGEST_MAX}, /* add r0, r0, #SIGF_UC */
|
|
{0xe59f700c, ULONGEST_MAX}, /* ldr r7, [pc, #12] */
|
|
{0xef0001a1, ULONGEST_MAX}, /* swi SYS_sigreturn */
|
|
{TRAMP_SENTINEL_INSN, ULONGEST_MAX}
|
|
},
|
|
arm_fbsd_sigframe_init
|
|
};
|
|
|
|
/* Register set definitions. */
|
|
|
|
const struct regset arm_fbsd_gregset =
|
|
{
|
|
arm_fbsd_gregmap,
|
|
regcache_supply_regset, regcache_collect_regset
|
|
};
|
|
|
|
const struct regset arm_fbsd_vfpregset =
|
|
{
|
|
arm_fbsd_vfpregmap,
|
|
regcache_supply_regset, regcache_collect_regset
|
|
};
|
|
|
|
/* Implement the "regset_from_core_section" gdbarch method. */
|
|
|
|
static void
|
|
arm_fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
|
|
iterate_over_regset_sections_cb *cb,
|
|
void *cb_data,
|
|
const struct regcache *regcache)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
cb (".reg", ARM_FBSD_SIZEOF_GREGSET, ARM_FBSD_SIZEOF_GREGSET,
|
|
&arm_fbsd_gregset, NULL, cb_data);
|
|
|
|
/* While FreeBSD/arm cores do contain a NT_FPREGSET / ".reg2"
|
|
register set, it is not populated with register values by the
|
|
kernel but just contains all zeroes. */
|
|
if (tdep->vfp_register_count > 0)
|
|
cb (".reg-arm-vfp", ARM_FBSD_SIZEOF_VFPREGSET, ARM_FBSD_SIZEOF_VFPREGSET,
|
|
&arm_fbsd_vfpregset, "VFP floating-point", cb_data);
|
|
}
|
|
|
|
/* Lookup a target description from a target's AT_HWCAP auxiliary
|
|
vector. */
|
|
|
|
const struct target_desc *
|
|
arm_fbsd_read_description_auxv (struct target_ops *target)
|
|
{
|
|
CORE_ADDR arm_hwcap = 0;
|
|
|
|
if (target_auxv_search (target, AT_FREEBSD_HWCAP, &arm_hwcap) != 1)
|
|
return NULL;
|
|
|
|
if (arm_hwcap & HWCAP_VFP)
|
|
{
|
|
if (arm_hwcap & HWCAP_NEON)
|
|
return tdesc_arm_with_neon;
|
|
else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPD32))
|
|
== (HWCAP_VFPv3 | HWCAP_VFPD32))
|
|
return tdesc_arm_with_vfpv3;
|
|
else
|
|
return tdesc_arm_with_vfpv2;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Implement the "core_read_description" gdbarch method. */
|
|
|
|
static const struct target_desc *
|
|
arm_fbsd_core_read_description (struct gdbarch *gdbarch,
|
|
struct target_ops *target,
|
|
bfd *abfd)
|
|
{
|
|
return arm_fbsd_read_description_auxv (target);
|
|
}
|
|
|
|
/* Implement the 'init_osabi' method of struct gdb_osabi_handler. */
|
|
|
|
static void
|
|
arm_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
/* Generic FreeBSD support. */
|
|
fbsd_init_abi (info, gdbarch);
|
|
|
|
if (tdep->fp_model == ARM_FLOAT_AUTO)
|
|
tdep->fp_model = ARM_FLOAT_SOFT_VFP;
|
|
|
|
tramp_frame_prepend_unwinder (gdbarch, &arm_fbsd_sigframe);
|
|
|
|
set_solib_svr4_fetch_link_map_offsets
|
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
|
|
|
tdep->jb_pc = 24;
|
|
tdep->jb_elt_size = 4;
|
|
|
|
set_gdbarch_iterate_over_regset_sections
|
|
(gdbarch, arm_fbsd_iterate_over_regset_sections);
|
|
set_gdbarch_core_read_description (gdbarch, arm_fbsd_core_read_description);
|
|
|
|
/* Single stepping. */
|
|
set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
|
|
}
|
|
|
|
void
|
|
_initialize_arm_fbsd_tdep (void)
|
|
{
|
|
gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_FREEBSD,
|
|
arm_fbsd_init_abi);
|
|
}
|