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Add bound related fields to the siginfo structure 

Both Linux and glibc have introduced bound related fields in the
segmentation fault fields of the siginfo_t type. Add the new fields
to our x86's siginfo_t type too.

Kernel patch:
http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=ee1b58d36aa1b5a79eaba11f5c3633c88231da83

Glibc patch:
d4358b51c2

2016-02-02  Walfred Tedeschi  <walfred.tedeschi@intel.com>

gdb/ChangeLog:

	* linux-tdep.c (linux_get_siginfo_type): Add the _addr_bnd
	structure to the siginfo if extra_fields contains
	LINUX_SIGINFO_FIELD_ADDR_BND.
This commit is contained in:
Walfred Tedeschi 2016-02-02 11:58:36 +01:00
parent 190b495d47
commit 96b5c49fb1
2 changed files with 21 additions and 2 deletions
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7
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2016-02-02 Walfred Tedeschi <walfred.tedeschi@intel.com>
* linux-tdep.c (linux_get_siginfo_type): Add the _addr_bnd
structure to the siginfo if extra_fields contains
LINUX_SIGINFO_FIELD_ADDR_BND.
2016-02-02 Walfred Tedeschi <walfred.tedeschi@intel.com>
* linux-tdep.h (linux_get_siginfo_type_with_fields): Make extern.
@ -11,7 +17,6 @@
(i386_linux_init_abi): Add new function at the i386 ABI
initialization.
2016-02-02 Walfred Tedeschi <walfred.tedeschi@intel.com>
* linux-tdep.h (linux_siginfo_extra_field_values): New enum values.

16
gdb/linux-tdep.c
View File

@ -250,7 +250,7 @@ linux_get_siginfo_type_with_fields (struct gdbarch *gdbarch,
linux_siginfo_extra_fields extra_fields)
{
struct linux_gdbarch_data *linux_gdbarch_data;
struct type *int_type, *uint_type, *long_type, *void_ptr_type;
struct type *int_type, *uint_type, *long_type, *void_ptr_type, *short_type;
struct type *uid_type, *pid_type;
struct type *sigval_type, *clock_type;
struct type *siginfo_type, *sifields_type;
@ -266,6 +266,8 @@ linux_get_siginfo_type_with_fields (struct gdbarch *gdbarch,
1, "unsigned int");
long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
0, "long");
short_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
0, "short");
void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
/* sival_t */
@ -341,6 +343,18 @@ linux_get_siginfo_type_with_fields (struct gdbarch *gdbarch,
/* _sigfault */
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
append_composite_type_field (type, "si_addr", void_ptr_type);
/* Additional bound fields for _sigfault in case they were requested. */
if ((extra_fields & LINUX_SIGINFO_FIELD_ADDR_BND) != 0)
{
struct type *sigfault_bnd_fields;
append_composite_type_field (type, "_addr_lsb", short_type);
sigfault_bnd_fields = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
append_composite_type_field (sigfault_bnd_fields, "_lower", void_ptr_type);
append_composite_type_field (sigfault_bnd_fields, "_upper", void_ptr_type);
append_composite_type_field (type, "_addr_bnd", sigfault_bnd_fields);
}
append_composite_type_field (sifields_type, "_sigfault", type);
/* _sigpoll */