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From: John Baldwin <jhb@sourceware.org> To: bfd-cvs@sourceware.org, gdb-cvs@sourceware.org Subject: [binutils-gdb] Support AT_USRSTACKBASE and AT_USRSTACKLIM. Date: Fri, 23 Sep 2022 22:36:31 +0000 (GMT) [thread overview] Message-ID: <20220923223631.98D7C3858D1E@sourceware.org> (raw) 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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