static void
amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
amd64_init_abi (info, gdbarch);
obsd_init_abi (info, gdbarch);
/* Initialize general-purpose register set details. */
tdep->gregset_reg_offset = amd64obsd_r_reg_offset;
tdep->gregset_num_regs = ARRAY_SIZE (amd64obsd_r_reg_offset);
tdep->sizeof_gregset = 24 * 8;
tdep->jb_pc_offset = 7 * 8;
tdep->sigtramp_p = amd64obsd_sigtramp_p;
tdep->sigcontext_addr = amd64obsd_sigcontext_addr;
tdep->sc_reg_offset = amd64obsd_sc_reg_offset;
tdep->sc_num_regs = ARRAY_SIZE (amd64obsd_sc_reg_offset);
/* OpenBSD provides a user-level threads implementation. */
bsd_uthread_set_supply_uthread (gdbarch, amd64obsd_supply_uthread);
bsd_uthread_set_collect_uthread (gdbarch, amd64obsd_collect_uthread);
/* OpenBSD uses SVR4-style shared libraries. */
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_lp64_fetch_link_map_offsets);
/* Unwind kernel trap frames correctly. */
frame_unwind_prepend_unwinder (gdbarch, &amd64obsd_trapframe_unwind);
}
static void
i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Obviously OpenBSD is BSD-based. */
i386bsd_init_abi (info, gdbarch);
/* OpenBSD has a different `struct reg'. */
tdep->gregset_reg_offset = i386obsd_r_reg_offset;
tdep->gregset_num_regs = ARRAY_SIZE (i386obsd_r_reg_offset);
tdep->sizeof_gregset = 16 * 4;
/* OpenBSD uses -freg-struct-return by default. */
tdep->struct_return = reg_struct_return;
/* OpenBSD uses a different memory layout. */
tdep->sigtramp_start = i386obsd_sigtramp_start_addr;
tdep->sigtramp_end = i386obsd_sigtramp_end_addr;
tdep->sigtramp_p = i386obsd_sigtramp_p;
/* OpenBSD has a `struct sigcontext' that's different from the
original 4.3 BSD. */
tdep->sc_reg_offset = i386obsd_sc_reg_offset;
tdep->sc_num_regs = ARRAY_SIZE (i386obsd_sc_reg_offset);
/* OpenBSD provides a user-level threads implementation. */
bsd_uthread_set_supply_uthread (gdbarch, i386obsd_supply_uthread);
bsd_uthread_set_collect_uthread (gdbarch, i386obsd_collect_uthread);
/* Unwind kernel trap frames correctly. */
frame_unwind_prepend_unwinder (gdbarch, &i386obsd_trapframe_unwind);
}
static void
ppcfbsd_kernel_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
frame_unwind_prepend_unwinder(gdbarch, &ppcfbsd_trapframe_unwind);
set_solib_ops(gdbarch, &kld_so_ops);
#ifdef __powerpc__
if (tdep->wordsize == sizeof(register_t))
{
fbsd_vmcore_set_supply_pcb(gdbarch, ppcfbsd_supply_pcb);
fbsd_vmcore_set_cpu_pcb_addr(gdbarch, kgdb_trgt_stop_pcb);
}
#endif
/* FreeBSD doesn't support the 128-bit `long double' from the psABI. */
set_gdbarch_long_double_bit (gdbarch, 64);
set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
if (tdep->wordsize == 4)
{
set_gdbarch_return_value (gdbarch, ppc_sysv_abi_broken_return_value);
}
if (tdep->wordsize == 8)
{
set_gdbarch_convert_from_func_ptr_addr
(gdbarch, ppc64_convert_from_func_ptr_addr);
set_gdbarch_elf_make_msymbol_special (gdbarch,
ppc64_elf_make_msymbol_special);
}
}
static void
i386nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Obviously NetBSD is BSD-based. */
i386bsd_init_abi (info, gdbarch);
/* NetBSD has a different `struct reg'. */
tdep->gregset_reg_offset = i386nbsd_r_reg_offset;
tdep->gregset_num_regs = ARRAY_SIZE (i386nbsd_r_reg_offset);
tdep->sizeof_gregset = 16 * 4;
/* NetBSD uses -freg-struct-return by default. */
tdep->struct_return = reg_struct_return;
/* NetBSD uses tramp_frame sniffers for signal trampolines. */
tdep->sigcontext_addr= 0;
tdep->sigtramp_start = 0;
tdep->sigtramp_end = 0;
tdep->sigtramp_p = 0;
tdep->sc_reg_offset = 0;
tdep->sc_num_regs = 0;
tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_sc16);
tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_sc2);
tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_si2);
tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_si31);
tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_si4);
/* Unwind kernel trap frames correctly. */
frame_unwind_prepend_unwinder (gdbarch, &i386nbsd_trapframe_unwind);
}
void
tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,
const struct tramp_frame *tramp_frame)
{
struct frame_data *data;
struct frame_unwind *unwinder;
int i;
/* Check that the instruction sequence contains a sentinel. */
for (i = 0; i < ARRAY_SIZE (tramp_frame->insn); i++)
{
if (tramp_frame->insn[i].bytes == TRAMP_SENTINEL_INSN)
break;
}
gdb_assert (i < ARRAY_SIZE (tramp_frame->insn));
gdb_assert (tramp_frame->insn_size <= sizeof (tramp_frame->insn[0].bytes));
data = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_data);
unwinder = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_unwind);
data->tramp_frame = tramp_frame;
unwinder->type = tramp_frame->frame_type;
unwinder->unwind_data = data;
unwinder->sniffer = tramp_frame_sniffer;
unwinder->this_id = tramp_frame_this_id;
unwinder->prev_register = tramp_frame_prev_register;
frame_unwind_prepend_unwinder (gdbarch, unwinder);
}
static void
amd64fbsd_kernel_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
{
amd64_init_abi(info, gdbarch);
frame_unwind_prepend_unwinder(gdbarch, &amd64fbsd_trapframe_unwind);
set_solib_ops(gdbarch, &kld_so_ops);
fbsd_vmcore_set_supply_pcb(gdbarch, amd64fbsd_supply_pcb);
fbsd_vmcore_set_cpu_pcb_addr(gdbarch, kgdb_trgt_stop_pcb);
}
static void
arm_linux_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
linux_init_abi (info, gdbarch);
tdep->lowest_pc = 0x8000;
if (info.byte_order == BFD_ENDIAN_BIG)
{
if (tdep->arm_abi == ARM_ABI_AAPCS)
tdep->arm_breakpoint = eabi_linux_arm_be_breakpoint;
else
tdep->arm_breakpoint = arm_linux_arm_be_breakpoint;
tdep->thumb_breakpoint = arm_linux_thumb_be_breakpoint;
tdep->thumb2_breakpoint = arm_linux_thumb2_be_breakpoint;
}
else
{
if (tdep->arm_abi == ARM_ABI_AAPCS)
tdep->arm_breakpoint = eabi_linux_arm_le_breakpoint;
else
tdep->arm_breakpoint = arm_linux_arm_le_breakpoint;
tdep->thumb_breakpoint = arm_linux_thumb_le_breakpoint;
tdep->thumb2_breakpoint = arm_linux_thumb2_le_breakpoint;
}
tdep->arm_breakpoint_size = sizeof (arm_linux_arm_le_breakpoint);
tdep->thumb_breakpoint_size = sizeof (arm_linux_thumb_le_breakpoint);
tdep->thumb2_breakpoint_size = sizeof (arm_linux_thumb2_le_breakpoint);
if (tdep->fp_model == ARM_FLOAT_AUTO)
tdep->fp_model = ARM_FLOAT_FPA;
switch (tdep->fp_model)
{
case ARM_FLOAT_FPA:
tdep->jb_pc = ARM_LINUX_JB_PC_FPA;
break;
case ARM_FLOAT_SOFT_FPA:
case ARM_FLOAT_SOFT_VFP:
case ARM_FLOAT_VFP:
tdep->jb_pc = ARM_LINUX_JB_PC_EABI;
break;
default:
internal_error
(__FILE__, __LINE__,
_("arm_linux_init_abi: Floating point model not supported"));
break;
}
if (is_target_linux_android ())
tdep->jb_pc = ARM_ANDROID_JB_PC;
tdep->jb_elt_size = ARM_LINUX_JB_ELEMENT_SIZE;
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
/* Single stepping. */
set_gdbarch_software_single_step (gdbarch, arm_linux_software_single_step);
/* Shared library handling. */
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
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);
if (is_target_linux_android ())
/* This is incomplete, we can't singlestep through the handler back to
the interrupted code, address 0xffff0500 is inaccessible.
This is really a temp hack until there's libc additions to put the
trampoline code in user space. */
frame_unwind_prepend_unwinder (gdbarch,
&arm_android_sigreturn_tramp_frame);
else
{ /* This indentation is on purpose to minimize whitespace changes. */
tramp_frame_prepend_unwinder (gdbarch,
&arm_linux_sigreturn_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
&arm_linux_rt_sigreturn_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
&arm_eabi_linux_sigreturn_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
&arm_eabi_linux_rt_sigreturn_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
&arm_linux_restart_syscall_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
&arm_kernel_linux_restart_syscall_tramp_frame);
}
/* Core file support. */
set_gdbarch_regset_from_core_section (gdbarch,
arm_linux_regset_from_core_section);
set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
/* Displaced stepping. */
set_gdbarch_displaced_step_copy_insn (gdbarch,
arm_linux_displaced_step_copy_insn);
set_gdbarch_displaced_step_fixup (gdbarch, arm_displaced_step_fixup);
set_gdbarch_displaced_step_free_closure (gdbarch,
simple_displaced_step_free_closure);
set_gdbarch_displaced_step_location (gdbarch, displaced_step_at_entry_point);
tdep->syscall_next_pc = arm_linux_syscall_next_pc;
}
static void
kgdb_trgt_open(char *filename, int from_tty)
{
struct cleanup *old_chain;
struct kthr *kt;
struct inferior *inf8;
struct program_space *pspace;
kvm_t *nkvm;
char *temp;
int first_inferior = 1;
target_preopen (from_tty);
if (!filename)
error ("No vmcore file specified.");
if (!exec_bfd)
error ("Can't open a vmcore without a kernel");
filename = tilde_expand (filename);
if (filename[0] != '/') {
temp = concat (current_directory, "/", filename, NULL);
xfree(filename);
filename = temp;
}
old_chain = make_cleanup (xfree, filename);
nkvm = kvm_openfiles(bfd_get_filename(exec_bfd), filename, NULL,
write_files ? O_RDWR : O_RDONLY, kvm_err);
if (nkvm == NULL)
error ("Failed to open vmcore: %s", kvm_err);
/* Don't free the filename now and close any previous vmcore. */
discard_cleanups(old_chain);
unpush_target(&kgdb_trgt_ops);
kvm = nkvm;
vmcore = filename;
old_chain = make_cleanup(kgdb_core_cleanup, NULL);
push_target (&kgdb_trgt_ops);
discard_cleanups (old_chain);
kgdb_dmesg();
init_thread_list();
kt = kgdb_thr_init();
while (kt != NULL) {
if (!in_inferior_list(kt->pid)) {
if (first_inferior) {
first_inferior = 0;
inf8 = current_inferior();
inf8->pid = kt->pid;
inferior_appeared (inf8, kt->pid);
pspace = current_program_space;
pspace->ebfd = 0;
pspace->ebfd_mtime = 0;
} else {
inf8 = add_inferior(kt->pid);
pspace = add_program_space(new_address_space());
pspace->symfile_object_file = symfile_objfile;
pspace->objfiles = object_files;
}
inf8->pspace = pspace;
inf8->aspace = pspace->aspace;
}
add_thread(ptid_build(kt->pid, 0, kt->tid));
kt = kgdb_thr_next(kt);
}
if (curkthr != 0)
inferior_ptid = ptid_build(curkthr->pid, 0, curkthr->tid);
frame_unwind_prepend_unwinder(get_frame_arch(get_current_frame()), &kgdb_trgt_trapframe_unwind);
/* XXX: fetch registers? */
kld_init();
reinit_frame_cache();
select_frame (get_current_frame());
print_stack_frame(get_selected_frame(NULL),
frame_relative_level(get_selected_frame(NULL)), 1);
}
