Differential D32000 Diff 95401 devel/gdb/files/kgdb/fbsd-kvm.c

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devel/gdb/files/kgdb/fbsd-kvm.c

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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.		* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,		* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT		* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,		* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY		* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT		* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF		* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.		* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/		*/

#include "defs.h"		#include "defs.h"
#include "command.h"		#include "command.h"
#include "elf-bfd.h"		#include "elf-bfd.h"
#include "filenames.h"		#include "filenames.h"
#include "gdbcore.h"		#include "gdbcore.h"
#include "gdbthread.h"		#include "gdbthread.h"
▲ Show 20 Lines • Show All 140 Lines • ▼ Show 20 Lines	fbsd_kernel_osabi_sniffer(bfd *abfd)

/* First, determine if this is a FreeBSD/ELF binary. */		/* First, determine if this is a FreeBSD/ELF binary. */
switch (elf_elfheader(abfd)->e_ident[EI_OSABI]) {		switch (elf_elfheader(abfd)->e_ident[EI_OSABI]) {
case ELFOSABI_FREEBSD:		case ELFOSABI_FREEBSD:
break;		break;
case ELFOSABI_NONE: {		case ELFOSABI_NONE: {
enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;		enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;

bfd_map_over_sections (abfd,		for (asection *sect : gdb_bfd_sections (abfd))
generic_elf_osabi_sniff_abi_tag_sections,		generic_elf_osabi_sniff_abi_tag_sections (abfd, sect, &osabi);
&osabi);

/*		/*
* aarch64 and RISC-V kernels don't have the right		* aarch64 and RISC-V kernels don't have the right
* note tag for kernels so just look for /red/herring		* note tag for kernels so just look for /red/herring
* anyway.		* anyway.
*/		*/
if (osabi == GDB_OSABI_UNKNOWN &&		if (osabi == GDB_OSABI_UNKNOWN &&
((elf_elfheader(abfd)->e_machine == EM_AARCH64) \|\|		((elf_elfheader(abfd)->e_machine == EM_AARCH64) \|\|
▲ Show 20 Lines • Show All 132 Lines • ▼ Show 20 Lines	nkvm = kvm_openfiles(kernel, filename, NULL,
writeable ? O_RDWR : O_RDONLY, kvm_err);		writeable ? O_RDWR : O_RDONLY, kvm_err);
#endif		#endif
if (nkvm == NULL) {		if (nkvm == NULL) {
xfree (filename);		xfree (filename);
error ("Failed to open vmcore: %s", kvm_err);		error ("Failed to open vmcore: %s", kvm_err);
}		}

/* Don't free the filename now and close any previous vmcore. */		/* Don't free the filename now and close any previous vmcore. */
unpush_target(&fbsd_kvm_ops);		current_inferior ()->unpush_target (&fbsd_kvm_ops);

#ifdef HAVE_KVM_DISP		#ifdef HAVE_KVM_DISP
/* Relocate kernel objfile if needed. */		/* Relocate kernel objfile if needed. */
if (symfile_objfile &&		struct objfile *symfile_objfile =
		current_program_space->symfile_object_file;
		if (symfile_objfile != nullptr &&
(bfd_get_file_flags(symfile_objfile->obfd) &		(bfd_get_file_flags(symfile_objfile->obfd) &
(EXEC_P \| DYNAMIC)) != 0) {		(EXEC_P \| DYNAMIC)) != 0) {
CORE_ADDR displacement = kvm_kerndisp(nkvm);		CORE_ADDR displacement = kvm_kerndisp(nkvm);
if (displacement != 0) {		if (displacement != 0) {
section_offsets new_offsets (symfile_objfile->section_offsets.size (),		section_offsets new_offsets (symfile_objfile->section_offsets.size (),
displacement);		displacement);
objfile_relocate(symfile_objfile, new_offsets);		objfile_relocate(symfile_objfile, new_offsets);
}		}
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#else		#else
pcb_size = sizeof(struct pcb);		pcb_size = sizeof(struct pcb);
#endif		#endif
}		}
}		}

kvm = nkvm;		kvm = nkvm;
vmcore = filename;		vmcore = filename;
push_target (&fbsd_kvm_ops);		current_inferior()->push_target (&fbsd_kvm_ops);

kgdb_dmesg();		kgdb_dmesg();

inf = current_inferior();		inf = current_inferior();
if (inf->pid == 0) {		if (inf->pid == 0) {
inferior_appeared(inf, 1);		inferior_appeared(inf, 1);
inf->fake_pid_p = 1;		inf->fake_pid_p = 1;
}		}
Show All 15 Lines	#endif
print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);		print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
}		}

void		void
fbsd_kvm_target::close()		fbsd_kvm_target::close()
{		{

if (kvm != NULL) {		if (kvm != NULL) {
		switch_to_no_thread ();
		exit_inferior_silent (current_inferior ());

clear_solib();		clear_solib();
if (kvm_close(kvm) != 0)		if (kvm_close(kvm) != 0)
warning("cannot close \"%s\": %s", vmcore,		warning("cannot close \"%s\": %s", vmcore,
kvm_geterr(kvm));		kvm_geterr(kvm));
kvm = NULL;		kvm = NULL;
xfree(vmcore);		xfree(vmcore);
vmcore = NULL;		vmcore = NULL;
}		}

switch_to_no_thread ();
exit_inferior_silent (current_inferior ());
}		}

#if 0		#if 0
static void		static void
kgdb_trgt_detach(struct target_ops ops, const char args, int from_tty)		kgdb_trgt_detach(struct target_ops ops, const char args, int from_tty)
{		{

if (args)		if (args)
▲ Show 20 Lines • Show All 191 Lines • ▼ Show 20 Lines	if (kvm != NULL && addr >= kernstart) {
thr = kgdb_thr_lookup_taddr(addr);		thr = kgdb_thr_lookup_taddr(addr);
if (thr == NULL)		if (thr == NULL)
error("invalid thread address");		error("invalid thread address");
addr = thr->tid;		addr = thr->tid;
}		}
kgdb_switch_to_thread(arg, addr);		kgdb_switch_to_thread(arg, addr);
}		}

void _initialize_kgdb_target(void);		void _initialize_kgdb_target ();
void		void
_initialize_kgdb_target(void)		_initialize_kgdb_target ()
{		{

add_target(fbsd_kvm_target_info, fbsd_kvm_target_open,		add_target(fbsd_kvm_target_info, fbsd_kvm_target_open,
filename_completer);		filename_completer);

fbsd_vmcore_data = gdbarch_data_register_pre_init(fbsd_vmcore_init);		fbsd_vmcore_data = gdbarch_data_register_pre_init(fbsd_vmcore_init);

add_com ("proc", class_obscure, kgdb_set_proc_cmd,		add_com ("proc", class_obscure, kgdb_set_proc_cmd,
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