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gdbserver-amd64: add HAVE_STRUCT_USER_REGS_STRUCT_(GS|FS)_BASE for gdbserver.

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The macros mentioned in the title were set only for GDB. In gdbserver they
were not set until now.  To align the code in GDB and gdbserver these macros
are also added into gdbserver, enabling read and write of gs_base and fs_base
registers from the system in new and old kernels.

2017-01-27  Walfred Tedeschi  <walfred.tedeschi@intel.com>

gdb/gdbserver/ChangeLog:

    	* configure.ac: Check if the fs_base and gs_base members of
    	`struct user_regs_struct' exist.
    	* config.in: Regenerated.
    	* configure: Likewise.
This commit is contained in:
Walfred Tedeschi
2017-01-27 15:19:12 +01:00
parent 387dd77738
commit 239b6d1095
4 changed files with 46 additions and 0 deletions
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7
gdb/gdbserver/ChangeLog
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@ -1,3 +1,10 @@
2017-01-27 Walfred Tedeschi <walfred.tedeschi@intel.com>
* configure.ac: Check if the fs_base and gs_base members of
`struct user_regs_struct' exist.
* config.in: Regenerated.
* configure: Likewise.
2017-01-09 Antoine Tremblay <antoine.tremblay@ericsson.com> 2017-01-09 Antoine Tremblay <antoine.tremblay@ericsson.com>
* linux-aarch32-low.c (arm_breakpoint_kind_from_pc): Use * linux-aarch32-low.c (arm_breakpoint_kind_from_pc): Use

6
gdb/gdbserver/config.in
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@ -238,6 +238,12 @@
/* Define to 1 if `struct stat' is a member of `st_blocks'. */ /* Define to 1 if `struct stat' is a member of `st_blocks'. */
#undef HAVE_STRUCT_STAT_ST_BLOCKS #undef HAVE_STRUCT_STAT_ST_BLOCKS
/* Define to 1 if `struct user_regs_struct' is a member of `fs_base'. */
#undef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
/* Define to 1 if `struct user_regs_struct' is a member of `gs_base'. */
#undef HAVE_STRUCT_USER_REGS_STRUCT_GS_BASE
/* Define to 1 if the target supports __sync_*_compare_and_swap */ /* Define to 1 if the target supports __sync_*_compare_and_swap */
#undef HAVE_SYNC_BUILTINS #undef HAVE_SYNC_BUILTINS

26
gdb/gdbserver/configure vendored
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@ -7498,6 +7498,32 @@ _ACEOF
fi fi
# See if <sys/user.h> supports the %fs_base and %gs_base amd64 segment
# registers. Older amd64 Linux's don't have the fs_base and gs_base
# members of `struct user_regs_struct'.
ac_fn_c_check_member "$LINENO" "struct user_regs_struct" "fs_base" "ac_cv_member_struct_user_regs_struct_fs_base" "#include <sys/user.h>
"
if test "x$ac_cv_member_struct_user_regs_struct_fs_base" = x""yes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE 1
_ACEOF
fi
ac_fn_c_check_member "$LINENO" "struct user_regs_struct" "gs_base" "ac_cv_member_struct_user_regs_struct_gs_base" "#include <sys/user.h>
"
if test "x$ac_cv_member_struct_user_regs_struct_gs_base" = x""yes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_STRUCT_USER_REGS_STRUCT_GS_BASE 1
_ACEOF
fi
ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "#include <sys/types.h> ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "#include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>

7
gdb/gdbserver/configure.ac
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@ -163,6 +163,13 @@ AC_CHECK_DECLS([strerror, perror, vasprintf, vsnprintf])
AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize]) AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
# See if <sys/user.h> supports the %fs_base and %gs_bas amd64 segment registers.
# Older amd64 Linux's don't have the fs_base and gs_base members of
# `struct user_regs_struct'.
AC_CHECK_MEMBERS([struct user_regs_struct.fs_base, struct user_regs_struct.gs_base],
[], [], [#include <sys/user.h>])
AC_CHECK_TYPES(socklen_t, [], [], AC_CHECK_TYPES(socklen_t, [], [],
[#include <sys/types.h> [#include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>