Differential D32000 Diff 95296 devel/gdb/files/kgdb/fbsd-kld.c

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

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* 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 <sys/cdefs.h>

#include "defs.h"		#include "defs.h"
#include "command.h"		#include "command.h"
#include "completer.h"		#include "completer.h"
#include "environ.h"		#include "environ.h"
#include "exec.h"		#include "exec.h"
#include "frame-unwind.h"		#include "frame-unwind.h"
#include "inferior.h"		#include "inferior.h"
#include "objfiles.h"		#include "objfiles.h"
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/*		/*
* Try to find the path for a kld by looking in the kernel's directory and		* Try to find the path for a kld by looking in the kernel's directory and
* in the various paths in the module path.		* in the various paths in the module path.
*/		*/
static gdb::optional<std::string>		static gdb::optional<std::string>
find_kld_path (const char *filename)		find_kld_path (const char *filename)
{		{
if (exec_bfd)		bfd *exec_bfd = current_program_space->exec_bfd ();
		if (exec_bfd != nullptr)
{		{
std::string kernel_dir = ldirname (bfd_get_filename (exec_bfd));		std::string kernel_dir = ldirname (bfd_get_filename (exec_bfd));
if (!kernel_dir.empty ())		if (!kernel_dir.empty ())
{		{
std::string path = string_printf("%s/%s", kernel_dir.c_str (),		std::string path = string_printf("%s/%s", kernel_dir.c_str (),
filename);		filename);
if (check_kld_path (path))		if (check_kld_path (path))
return path;		return path;
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*/		*/
static CORE_ADDR		static CORE_ADDR
read_pointer (CORE_ADDR address)		read_pointer (CORE_ADDR address)
{		{
struct type *ptr_type;		struct type *ptr_type;
gdb_byte ptr_buf[8];		gdb_byte ptr_buf[8];
int arch_size;		int arch_size;

arch_size = bfd_get_arch_size (exec_bfd);		arch_size = bfd_get_arch_size (current_program_space->exec_bfd ());
if (arch_size == -1)		if (arch_size == -1)
return (0);		return (0);
ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;		ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
if (target_read_memory(address, ptr_buf, arch_size / 8) != 0)		if (target_read_memory(address, ptr_buf, arch_size / 8) != 0)
return (0);		return (0);
return (extract_typed_address (ptr_buf, ptr_type));		return (extract_typed_address (ptr_buf, ptr_type));
}		}

▲ Show 20 Lines • Show All 51 Lines • ▼ Show 20 Lines	adjust_section_address (struct target_section sec, CORE_ADDR curr_base)
sec->addr = *curr_base;		sec->addr = *curr_base;
sec->endaddr = sec->addr + bfd_section_size(asect);		sec->endaddr = sec->addr + bfd_section_size(asect);
*curr_base = sec->endaddr;		*curr_base = sec->endaddr;
}		}

static void		static void
load_kld (const char *path, CORE_ADDR base_addr, int from_tty)		load_kld (const char *path, CORE_ADDR base_addr, int from_tty)
{		{
struct target_section sections = NULL, sections_end = NULL, *s;
gdb_bfd_ref_ptr bfd;
CORE_ADDR curr_addr;
symfile_add_flags add_flags;
int i;

/* Open the kld. */		/* Open the kld. */
bfd = gdb_bfd_openr(path, gnutarget);		gdb_bfd_ref_ptr bfd = gdb_bfd_openr(path, gnutarget);
if (bfd == NULL)		if (bfd == NULL)
error("\"%s\": can't open: %s", path,		error("\"%s\": can't open: %s", path,
bfd_errmsg(bfd_get_error()));		bfd_errmsg(bfd_get_error()));

if (!bfd_check_format(bfd.get(), bfd_object))		if (!bfd_check_format(bfd.get(), bfd_object))
error("\%s\": not an object file", path);		error("\%s\": not an object file", path);

/* Make sure we have a .text section. */		/* Make sure we have a .text section. */
if (bfd_get_section_by_name (bfd.get(), ".text") == NULL)		if (bfd_get_section_by_name (bfd.get(), ".text") == NULL)
error("\"%s\": can't find text section", path);		error("\"%s\": can't find text section", path);

/* Build a section table from the bfd and relocate the sections. */		/* Build a section table from the bfd and relocate the sections. */
if (build_section_table (bfd.get(), &sections, &sections_end))		target_section_table sections = build_section_table (bfd.get());
error("\"%s\": can't find file sections", path);		CORE_ADDR curr_addr = base_addr;
curr_addr = base_addr;		for (target_section &s : sections)
for (s = sections; s < sections_end; s++)		adjust_section_address(&s, &curr_addr);
adjust_section_address(s, &curr_addr);

/* Build a section addr info to pass to symbol_file_add(). */		/* Build a section addr info to pass to symbol_file_add(). */
section_addr_info sap		section_addr_info sap
= build_section_addr_info_from_section_table (sections,		= build_section_addr_info_from_section_table (sections);
sections_end);
xfree(sections);

printf_unfiltered("add symbol table from file \"%s\" at\n", path);		printf_unfiltered("add symbol table from file \"%s\" at\n", path);
for (i = 0; i < sap.size(); i++)		for (const other_sections &s : sap)
printf_unfiltered("\t%s_addr = %s\n", sap[i].name.c_str(),		printf_unfiltered("\t%s_addr = %s\n", s.name.c_str(),
paddress(target_gdbarch(), sap[i].addr));		paddress(target_gdbarch(), s.addr));

if (from_tty && (!query("%s", "")))		if (from_tty && (!query("%s", "")))
error("Not confirmed.");		error("Not confirmed.");

add_flags = 0;		symfile_add_flags add_flags = 0;
if (from_tty)		if (from_tty)
add_flags \|= SYMFILE_VERBOSE;		add_flags \|= SYMFILE_VERBOSE;
symbol_file_add_from_bfd(bfd.get(), path, add_flags, &sap,		symbol_file_add_from_bfd(bfd.get(), path, add_flags, &sap,
OBJF_USERLOADED, NULL);		OBJF_USERLOADED, NULL);
}		}

static void		static void
kgdb_add_kld_cmd (const char *arg, int from_tty)		kgdb_add_kld_cmd (const char *arg, int from_tty)
{		{
CORE_ADDR base_addr;		CORE_ADDR base_addr;

if (!exec_bfd)		if (current_program_space->exec_bfd () == nullptr)
error("No kernel symbol file");		error("No kernel symbol file");

/* Try to open the raw path to handle absolute paths first. */		/* Try to open the raw path to handle absolute paths first. */
std::string path (arg);		std::string path (arg);
if (!check_kld_path(path)) {		if (!check_kld_path(path)) {

/*		/*
* If that didn't work, look in the various possible		* If that didn't work, look in the various possible
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}		}

static void		static void
kld_relocate_section_addresses (struct so_list so, struct target_section sec)		kld_relocate_section_addresses (struct so_list so, struct target_section sec)
{		{
lm_info_kld li = (lm_info_kld ) so->lm_info;		lm_info_kld li = (lm_info_kld ) so->lm_info;
static CORE_ADDR curr_addr;		static CORE_ADDR curr_addr;

if (sec == so->sections)		if (sec == &so->sections->front())
curr_addr = li->base_address;		curr_addr = li->base_address;

adjust_section_address(sec, &curr_addr);		adjust_section_address(sec, &curr_addr);
}		}

static void		static void
kld_free_so (struct so_list *so)		kld_free_so (struct so_list *so)
{		{
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}		}

static void		static void
kld_solib_create_inferior_hook (int from_tty)		kld_solib_create_inferior_hook (int from_tty)
{		{
struct kld_info *info;		struct kld_info *info;

info = get_kld_info();		info = get_kld_info();

/*		/*
* Compute offsets of relevant members in struct linker_file		* Compute offsets of relevant members in struct linker_file
* and the addresses of global variables. Newer kernels		* and the addresses of global variables. Newer kernels
* include constants we can use without requiring debug		* include constants we can use without requiring debug
* symbols.		* symbols.
*/		*/
try {		try {
info->off_address = parse_and_eval_long("kld_off_address");		info->off_address = parse_and_eval_long("kld_off_address");
▲ Show 20 Lines • Show All 151 Lines • ▼ Show 20 Lines	if (!found) {
return (-1);		return (-1);
}		}
int fd = open(found->c_str (), o_flags, 0);		int fd = open(found->c_str (), o_flags, 0);
if (fd >= 0)		if (fd >= 0)
temp_pathname->reset (xstrdup (found->c_str ()));		temp_pathname->reset (xstrdup (found->c_str ()));
return (fd);		return (fd);
}		}

void _initialize_kld_target(void);		void _initialize_kld_target ();
void		void
_initialize_kld_target(void)		_initialize_kld_target ()
{		{
struct cmd_list_element *c;		struct cmd_list_element *c;

kld_so_ops.relocate_section_addresses = kld_relocate_section_addresses;		kld_so_ops.relocate_section_addresses = kld_relocate_section_addresses;
kld_so_ops.free_so = kld_free_so;		kld_so_ops.free_so = kld_free_so;
kld_so_ops.clear_so = kld_clear_so;		kld_so_ops.clear_so = kld_clear_so;
kld_so_ops.clear_solib = kld_clear_solib;		kld_so_ops.clear_solib = kld_clear_solib;
kld_so_ops.solib_create_inferior_hook = kld_solib_create_inferior_hook;		kld_so_ops.solib_create_inferior_hook = kld_solib_create_inferior_hook;
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