diff options
| author | John Baldwin <jhb@FreeBSD.org> | 2021-12-07 10:29:01 -0800 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2021-12-07 10:29:01 -0800 |
| commit | b4992e9990118f79764ee681dd10372bcf722ba5 (patch) | |
| tree | 1d83e39dbd95c62ce34b9199af6bba4fe4b7cb32 | |
| parent | c5a9fcdfeea5e961b8f73417c213fa570c8affb6 (diff) | |
| download | gdb-b4992e9990118f79764ee681dd10372bcf722ba5.zip gdb-b4992e9990118f79764ee681dd10372bcf722ba5.tar.gz gdb-b4992e9990118f79764ee681dd10372bcf722ba5.tar.bz2 | |
Support AT_FXRNG and AT_KPRELOAD on FreeBSD.
FreeBSD's kernel has recently added two new ELF auxiliary vector
entries. AT_FXRNG points to a root seed version for the kernel's
PRNG. Userland can use this to reseed a userland PRNG after the
kernel's PRNG has reseeded. AT_KPRELOAD is the base address of a
kernel-provided vDSO.
This change displays the proper name and description of these entries
in 'info auxv'.
include/ChangeLog:
* elf/common.h (AT_FREEBSD_FXRNG, AT_FREEBSD_KPRELOAD): Define.
| -rw-r--r-- | gdb/fbsd-tdep.c | 2 | ||||
| -rw-r--r-- | include/ChangeLog | 4 | ||||
| -rw-r--r-- | include/elf/common.h | 2 |
3 files changed, 8 insertions, 0 deletions
diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c index 4da7798..346ff7b 100644 --- a/gdb/fbsd-tdep.c +++ b/gdb/fbsd-tdep.c @@ -1565,6 +1565,8 @@ fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file, TAG (ENVC, _("Environment count"), AUXV_FORMAT_DEC); TAG (ENVV, _("Environment vector"), AUXV_FORMAT_HEX); TAG (PS_STRINGS, _("Pointer to ps_strings"), AUXV_FORMAT_HEX); + TAG (FXRNG, _("Pointer to root RNG seed version"), AUXV_FORMAT_HEX); + TAG (KPRELOAD, _("Base address of vDSO"), AUXV_FORMAT_HEX); } fprint_auxv_entry (file, name, description, format, type, val); diff --git a/include/ChangeLog b/include/ChangeLog index c5b3631..d0d62bd 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,7 @@ +2021-12-07 John Baldwin <jhb@FreeBSD.org> + + * elf/common.h (AT_FREEBSD_FXRNG, AT_FREEBSD_KPRELOAD): Define. + 2021-12-01 Nick Clifton <nickc@redhat.com> PR 28630 diff --git a/include/elf/common.h b/include/elf/common.h index 61cfaac..66bc06f 100644 --- a/include/elf/common.h +++ b/include/elf/common.h @@ -1392,6 +1392,8 @@ #define AT_FREEBSD_ENVC 30 /* Environment count. */ #define AT_FREEBSD_ENVV 31 /* Environment vvector. */ #define AT_FREEBSD_PS_STRINGS 32 /* struct ps_strings. */ +#define AT_FREEBSD_FXRNG 33 /* Pointer to root RNG seed version. */ +#define AT_FREEBSD_KPRELOAD 34 /* Base of vdso. */ #define AT_SUN_UID 2000 /* Effective user ID. */ #define AT_SUN_RUID 2001 /* Real user ID. */ |