[Crash-utility] [RFC][PATCH 0/1] add loongarch64 platform support.
This patch are for Crash-utility tool, it make crash tool support on
loongarch64 architecture and the common commands(bt, p, rd, mod, log, set,
dis, and so on).
The upstream GDB code supports the loongarch64 architecture from version 13.1.
See: https://sourceware.org/gdb/download/ANNOUNCEMENT
But Crash-utility depends on gdb-10.2, gdb-10.2 do NOT supported loongarch64.
So we need a patch(gdb-10.2-loongarch.patch) to support it. I don't have a better
way to deal with this problem at the moment.
I test this patch on Loongson 3C50000 processor platform.
...
KERNEL: /usr/lib/debug/lib/modules/5.10.0-60.102.0.128.oe2203.loongarch64/vmlinux
DUMPFILE: /proc/kcore
CPUS: 16
DATE: Thu Jul 27 19:51:21 CST 2023
UPTIME: 06:35:11
LOAD AVERAGE: 0.15, 0.03, 0.01
TASKS: 257
NODENAME: localhost.localdomain
RELEASE: 5.10.0-60.102.0.128.oe2203.loongarch64
VERSION: #1 SMP Fri Jul 14 04:17:09 UTC 2023
MACHINE: loongarch64 (2200 Mhz)
MEMORY: 64 GB
PID: 2964
COMMAND: "crash"
TASK: 9000000098805500 [THREAD_INFO: 9000000094d48000]
CPU: 6
STATE: TASK_RUNNING (ACTIVE)
crash>
crash> dis -l start_kernel
/linux-5.10.0-60.102.0.128.oe2203.loongarch64/init/main.c: 883
0x9000000001030818 <start_kernel>: 0x0141ee40
/linux-5.10.0-60.102.0.128.oe2203.loongarch64/init/main.c: 879
0x900000000103081c <start_kernel+4>: 0x90000000
/linux-5.10.0-60.102.0.128.oe2203.loongarch64/init/main.c: 883
0x9000000001030820 <start_kernel+8>: addu16i.d $zero, $t8, 8179(0x1ff3)
/linux-5.10.0-60.102.0.128.oe2203.loongarch64/init/main.c: 879
...
About the LoongArch64 Architecture:
https://www.kernel.org/doc/html/latest/loongarch/index.html
After this RFC, I will split this big patch to many small patchs by function,
like RISCV64 patch sets.
Ming Wang (1):
loongarch64: Support loongarch64 architecture and common commands
Makefile | 9 +-
README | 4 +-
configure.c | 27 +-
crash.8 | 2 +-
defs.h | 161 +-
diskdump.c | 24 +-
gdb-10.2-loongarch.patch | 15207 +++++++++++++++++++++++++++++++++++++
gdb_interface.c | 1 -
help.c | 9 +-
lkcd_vmdump_v1.h | 2 +-
lkcd_vmdump_v2_v3.h | 5 +-
loongarch64.c | 1347 ++++
main.c | 3 +-
netdump.c | 26 +-
ramdump.c | 2 +
symbols.c | 26 +-
16 files changed, 16832 insertions(+), 23 deletions(-)
create mode 100644 gdb-10.2-loongarch.patch
create mode 100644 loongarch64.c
base-commit: c74f375e0ef7cd9b593fa1d73c47505822c8f2a0
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2.39.2