The patch titled
Subject: scripts/gdb: add read_u16/32/64 helpers
has been added to the -mm tree. Its filename is
scripts-gdb-add-read_u16-32-64-helpers.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/scripts-gdb-add-read_u16-32-64-helpers.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/scripts-gdb-add-read_u16-32-64-helpers.patch
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------------------------------------------------------
From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Subject: scripts/gdb: add read_u16/32/64 helpers
Add helpers for reading integers from target memory buffers. Required
when caching the memory access is more efficient than reading individual
values via gdb.
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jason Wessel <jason.wessel@xxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Ben Widawsky <ben@xxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/gdb/linux/utils.py | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff -puN scripts/gdb/linux/utils.py~scripts-gdb-add-read_u16-32-64-helpers scripts/gdb/linux/utils.py
--- a/scripts/gdb/linux/utils.py~scripts-gdb-add-read_u16-32-64-helpers
+++ a/scripts/gdb/linux/utils.py
@@ -85,3 +85,24 @@ def get_target_endianness():
else:
raise gdb.GdgError("unknown endianness '{0}'".format(endian))
return target_endianness
+
+
+def read_u16(buffer):
+ if get_target_endianness() == LITTLE_ENDIAN:
+ return ord(buffer[0]) + (ord(buffer[1]) << 8)
+ else:
+ return ord(buffer[1]) + (ord(buffer[0]) << 8)
+
+
+def read_u32(buffer):
+ if get_target_endianness() == LITTLE_ENDIAN:
+ return read_u16(buffer[0:2]) + (read_u16(buffer[2:4]) << 16)
+ else:
+ return read_u16(buffer[2:4]) + (read_u16(buffer[0:2]) << 16)
+
+
+def read_u64(buffer):
+ if get_target_endianness() == LITTLE_ENDIAN:
+ return read_u32(buffer[0:4]) + (read_u32(buffer[4:8]) << 32)
+ else:
+ return read_u32(buffer[4:8]) + (read_u32(buffer[0:4]) << 32)
_
Patches currently in -mm which might be from jan.kiszka@xxxxxxxxxxx are
scripts-gdb-add-infrastructure.patch
scripts-gdb-add-cache-for-type-objects.patch
scripts-gdb-add-container_of-helper-and-convenience-function.patch
scripts-gdb-add-module-iteration-class.patch
scripts-gdb-add-lx-symbols-command.patch
module-do-not-inline-do_init_module.patch
scripts-gdb-add-automatic-symbol-reloading-on-module-insertion.patch
scripts-gdb-add-internal-helper-and-convenience-function-to-look-up-a-module.patch
scripts-gdb-add-get_target_endianness-helper.patch
scripts-gdb-add-read_u16-32-64-helpers.patch
scripts-gdb-add-lx-dmesg-command.patch
scripts-gdb-add-task-iteration-class.patch
scripts-gdb-add-helper-and-convenience-function-to-look-up-tasks.patch
scripts-gdb-add-is_target_arch-helper.patch
scripts-gdb-add-internal-helper-and-convenience-function-to-retrieve-thread_info.patch
scripts-gdb-add-get_gdbserver_type-helper.patch
scripts-gdb-add-internal-helper-and-convenience-function-for-per-cpu-lookup.patch
scripts-gdb-add-lx_current-convenience-function.patch
scripts-gdb-add-class-to-iterate-over-cpu-masks.patch
scripts-gdb-add-lx-lsmod-command.patch
scripts-gdb-add-basic-documentation.patch
scripts-gdb-port-to-python3-gdb77.patch
scripts-gdb-ignore-byte-compiled-python-files.patch
scripts-gdb-use-a-generator-instead-of-iterator-for-task-list.patch
scripts-gdb-convert-modulelist-to-generator-function.patch
scripts-gdb-convert-cpulist-to-generator-function.patch
scripts-gdb-define-maintainer.patch
scripts-gdb-disable-pagination-while-printing-from-breakpoint-handler.patch
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