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| author | Markus Metzger <markus.t.metzger@intel.com> | 2019-11-26 12:02:30 +0100 |
|---|---|---|
| committer | Markus Metzger <markus.t.metzger@intel.com> | 2019-12-17 16:04:40 +0100 |
| commit | d26f3c10410841680a430fdac98a1ed8ddbf0315 (patch) | |
| tree | 8b077678dcf18dc9bbf8089ef84930bd183b06fb | |
| parent | db18e24c4999bb6e07d510011c5d37225de96f0b (diff) | |
| download | gdb-users/mmetzger/fsgs.zip gdb-users/mmetzger/fsgs.tar.gz gdb-users/mmetzger/fsgs.tar.bz2 | |
[wip] gdbserver, x86: support fs_base and gs_baseusers/mmetzger/fsgs
When debugging over gdbserver fs/gs_base is not updated when changing the
corresponding selector.
For 32-bit inferiors, fs/gs_base are now defined but not fetched.
Change-Id: I5a4d8637324ee5f0c303fdcc5eeb8ca50b96c577
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
| -rw-r--r-- | gdb/gdbserver/linux-x86-low.c | 2 | ||||
| -rw-r--r-- | gdb/gdbserver/linux-x86-tdesc.c | 16 |
2 files changed, 15 insertions, 3 deletions
diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c index 54bd2a2..479cec0 100644 --- a/gdb/gdbserver/linux-x86-low.c +++ b/gdb/gdbserver/linux-x86-low.c @@ -133,7 +133,7 @@ static const int x86_64_regmap[] = -1, -1, -1, -1, -1, -1, -1, -1, ORIG_RAX * 8, #ifdef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE - 21 * 8, 22 * 8, + FS_BASE * 8, GS_BASE * 8, #else -1, -1, #endif diff --git a/gdb/gdbserver/linux-x86-tdesc.c b/gdb/gdbserver/linux-x86-tdesc.c index b39ed53..ab43ae5 100644 --- a/gdb/gdbserver/linux-x86-tdesc.c +++ b/gdb/gdbserver/linux-x86-tdesc.c @@ -87,7 +87,13 @@ i386_linux_read_description (uint64_t xcr0) if (*tdesc == NULL) { - *tdesc = i386_create_target_description (xcr0, true, false); +#ifdef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE + const bool segment = true; +#else + const bool segment = false; +#endif + + *tdesc = i386_create_target_description (xcr0, true, segment); init_target_desc (*tdesc, i386_expedite_regs); } @@ -118,7 +124,13 @@ amd64_linux_read_description (uint64_t xcr0, bool is_x32) if (*tdesc == NULL) { - *tdesc = amd64_create_target_description (xcr0, is_x32, true, true); +#ifdef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE + const bool segment = true; +#else + const bool segment = false; +#endif + + *tdesc = amd64_create_target_description (xcr0, is_x32, true, segment); init_target_desc (*tdesc, amd64_expedite_regs); } |