[binutils-gdb] Support AT_USRSTACKBASE and AT_USRSTACKLIM.
John Baldwin
jhb@sourceware.org
Fri Sep 23 22:36:31 GMT 2022
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4f60f82104e428ba23cf7c82cde7ea536af092fd
commit 4f60f82104e428ba23cf7c82cde7ea536af092fd
Author: John Baldwin <jhb@FreeBSD.org>
Date: Fri Sep 23 15:36:10 2022 -0700
Support AT_USRSTACKBASE and AT_USRSTACKLIM.
FreeBSD's kernel has recently added two new ELF auxiliary vector
entries to describe the location of the user stack for the initial
thread in a process.
This change displays the proper name and description of these entries
in 'info auxv'.
Diff:
---
gdb/fbsd-tdep.c | 2 ++
include/elf/common.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c
index 40370100c0f..309777c55f2 100644
--- a/gdb/fbsd-tdep.c
+++ b/gdb/fbsd-tdep.c
@@ -1571,6 +1571,8 @@ fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
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);
+ TAG (USRSTACKBASE, _("Top of user stack"), AUXV_FORMAT_HEX);
+ TAG (USRSTACKLIM, _("Grow limit of user stack"), AUXV_FORMAT_HEX);
}
fprint_auxv_entry (file, name, description, format, type, val);
diff --git a/include/elf/common.h b/include/elf/common.h
index ebcd8f9e82c..287526d74ed 100644
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -1405,6 +1405,8 @@
#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_FREEBSD_USRSTACKBASE 35 /* Top of user stack. */
+#define AT_FREEBSD_USRSTACKLIM 36 /* Grow limit of user stack. */
#define AT_SUN_UID 2000 /* Effective user ID. */
#define AT_SUN_RUID 2001 /* Real user ID. */
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