Implement the "get_siginfo_type" gdbarch method for FreeBSD architectures.
As with Linux architectures, cache the created type in the gdbarch when it is first created. Currently FreeBSD uses an identical siginfo type on all architectures, so there is no support for architecture-specific fields. gdb/ChangeLog: * fbsd-tdep.c (fbsd_gdbarch_data_handle, struct fbsd_gdbarch_data) (init_fbsd_gdbarch_data, get_fbsd_gdbarch_data) (fbsd_get_siginfo_type): New. (fbsd_init_abi): Install gdbarch "get_siginfo_type" method. (_initialize_fbsd_tdep): New.
This commit is contained in:
John Baldwin
parent
e54cb31aa3
commit
762c974a09
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@ -1,3 +1,11 @@
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2017-07-07 John Baldwin <jhb@FreeBSD.org>
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* fbsd-tdep.c (fbsd_gdbarch_data_handle, struct fbsd_gdbarch_data)
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(init_fbsd_gdbarch_data, get_fbsd_gdbarch_data)
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(fbsd_get_siginfo_type): New.
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(fbsd_init_abi): Install gdbarch "get_siginfo_type" method.
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(_initialize_fbsd_tdep): New.
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2017-07-06 David Blaikie <dblaikie@gmail.com>
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* dwarf2read.c (struct dwo_file): Use a htab of dwo_unit* (rather than
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122
gdb/fbsd-tdep.c
122
gdb/fbsd-tdep.c
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@ -30,6 +30,26 @@
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#include "fbsd-tdep.h"
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static struct gdbarch_data *fbsd_gdbarch_data_handle;
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struct fbsd_gdbarch_data
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{
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struct type *siginfo_type;
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};
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static void *
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init_fbsd_gdbarch_data (struct gdbarch *gdbarch)
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{
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return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct fbsd_gdbarch_data);
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}
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static struct fbsd_gdbarch_data *
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get_fbsd_gdbarch_data (struct gdbarch *gdbarch)
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{
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return ((struct fbsd_gdbarch_data *)
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gdbarch_data (gdbarch, fbsd_gdbarch_data_handle));
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}
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/* This is how we want PTIDs from core files to be printed. */
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static const char *
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@ -314,6 +334,97 @@ fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
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fprint_auxv_entry (file, name, description, format, type, val);
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}
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/* Implement the "get_siginfo_type" gdbarch method. */
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static struct type *
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fbsd_get_siginfo_type (struct gdbarch *gdbarch)
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{
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struct fbsd_gdbarch_data *fbsd_gdbarch_data;
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struct type *int_type, *int32_type, *uint32_type, *long_type, *void_ptr_type;
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struct type *uid_type, *pid_type;
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struct type *sigval_type, *reason_type;
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struct type *siginfo_type;
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struct type *type;
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fbsd_gdbarch_data = get_fbsd_gdbarch_data (gdbarch);
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if (fbsd_gdbarch_data->siginfo_type != NULL)
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return fbsd_gdbarch_data->siginfo_type;
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int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
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0, "int");
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int32_type = arch_integer_type (gdbarch, 32, 0, "int32_t");
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uint32_type = arch_integer_type (gdbarch, 32, 1, "uint32_t");
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long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
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0, "long");
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void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
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/* union sigval */
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sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
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TYPE_NAME (sigval_type) = xstrdup ("sigval");
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append_composite_type_field (sigval_type, "sival_int", int_type);
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append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
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/* __pid_t */
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pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
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TYPE_LENGTH (int32_type), "__pid_t");
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TYPE_TARGET_TYPE (pid_type) = int32_type;
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TYPE_TARGET_STUB (pid_type) = 1;
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/* __uid_t */
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uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
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TYPE_LENGTH (uint32_type), "__uid_t");
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TYPE_TARGET_TYPE (uid_type) = uint32_type;
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TYPE_TARGET_STUB (uid_type) = 1;
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/* _reason */
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reason_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
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/* _fault */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_trapno", int_type);
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append_composite_type_field (reason_type, "_fault", type);
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/* _timer */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_timerid", int_type);
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append_composite_type_field (type, "si_overrun", int_type);
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append_composite_type_field (reason_type, "_timer", type);
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/* _mesgq */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_mqd", int_type);
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append_composite_type_field (reason_type, "_mesgq", type);
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/* _poll */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_band", long_type);
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append_composite_type_field (reason_type, "_poll", type);
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/* __spare__ */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "__spare1__", long_type);
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append_composite_type_field (type, "__spare2__",
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init_vector_type (int_type, 7));
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append_composite_type_field (reason_type, "__spare__", type);
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/* struct siginfo */
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siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
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append_composite_type_field (siginfo_type, "si_signo", int_type);
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append_composite_type_field (siginfo_type, "si_errno", int_type);
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append_composite_type_field (siginfo_type, "si_code", int_type);
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append_composite_type_field (siginfo_type, "si_pid", pid_type);
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append_composite_type_field (siginfo_type, "si_uid", uid_type);
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append_composite_type_field (siginfo_type, "si_status", int_type);
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append_composite_type_field (siginfo_type, "si_addr", void_ptr_type);
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append_composite_type_field (siginfo_type, "si_value", sigval_type);
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append_composite_type_field (siginfo_type, "_reason", reason_type);
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fbsd_gdbarch_data->siginfo_type = siginfo_type;
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return siginfo_type;
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}
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/* Implement the "get_syscall_number" gdbarch method. */
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static LONGEST
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@ -339,8 +450,19 @@ fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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set_gdbarch_core_thread_name (gdbarch, fbsd_core_thread_name);
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set_gdbarch_make_corefile_notes (gdbarch, fbsd_make_corefile_notes);
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set_gdbarch_print_auxv_entry (gdbarch, fbsd_print_auxv_entry);
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set_gdbarch_get_siginfo_type (gdbarch, fbsd_get_siginfo_type);
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/* `catch syscall' */
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set_xml_syscall_file_name (gdbarch, "syscalls/freebsd.xml");
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set_gdbarch_get_syscall_number (gdbarch, fbsd_get_syscall_number);
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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extern initialize_file_ftype _initialize_fbsd_tdep;
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void
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_initialize_fbsd_tdep (void)
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{
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fbsd_gdbarch_data_handle =
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gdbarch_data_register_post_init (init_fbsd_gdbarch_data);
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}
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