Commit Graph

9 Commits

Author SHA1 Message Date
Feiyang Chen
e4d74c01e7 gdb: LoongArch: Add LBT extension support
Loongson Binary Translation (LBT) is used to accelerate binary
translation, which contains 4 scratch registers (scr0 to scr3),
x86/ARM eflags (eflags) and x87 fpu stack pointer (ftop). This
patch support gdb to fetch/store these registers.

Signed-off-by: Feiyang Chen <chenfeiyang@loongson.cn> #  Framework
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>   #  Detail Optimizes
Signed-off-by: Hui Li <lihui@loongson.cn>             #  Error Fixes
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2024-02-06 18:40:19 +08:00
Hui Li
1e9569f383 gdb: LoongArch: Add vector extensions support
Add LoongArch's vector extensions support, which including
128bit LSX (i.e., Loongson SIMD eXtension) and 256bit LASX
(i.e., Loongson Advanced SIMD eXtension). This patch support
gdb to fetch/store vector registers.

Signed-off-by: Hui Li <lihui@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2024-02-06 18:40:02 +08:00
Andrew Burgess
1d506c26d9 Update copyright year range in header of all files managed by GDB
This commit is the result of the following actions:

  - Running gdb/copyright.py to update all of the copyright headers to
    include 2024,

  - Manually updating a few files the copyright.py script told me to
    update, these files had copyright headers embedded within the
    file,

  - Regenerating gdbsupport/Makefile.in to refresh it's copyright
    date,

  - Using grep to find other files that still mentioned 2023.  If
    these files were updated last year from 2022 to 2023 then I've
    updated them this year to 2024.

I'm sure I've probably missed some dates.  Feel free to fix them up as
you spot them.
2024-01-12 15:49:57 +00:00
Joel Brobecker
213516ef31 Update copyright year range in header of all files managed by GDB
This commit is the result of running the gdb/copyright.py script,
which automated the update of the copyright year range for all
source files managed by the GDB project to be updated to include
year 2023.
2023-01-01 17:01:16 +04:00
Feiyang Chen
ea3352172e gdb/gdbserver: LoongArch: Improve implementation of fcc registers
The current implementation of the fcc register is referenced to the
user_fp_state structure of the kernel uapi [1].

struct user_fp_state {
	uint64_t    fpr[32];
	uint64_t    fcc;
	uint32_t    fcsr;
};

But it is mistakenly defined as a 64-bit fputype register, resulting
in a confusing output of "info register".

(gdb) info register
...
fcc            {f = 0x0, d = 0x0}  {f = 0, d = 0}
...

According to "Condition Flag Register" in "LoongArch Reference Manual"
[2], there are 8 condition flag registers of size 1. Use 8 registers of
uint8 to make it easier for users to view the fcc register groups.

(gdb) info register
...
fcc0           0x1                 1
fcc1           0x0                 0
fcc2           0x0                 0
fcc3           0x0                 0
fcc4           0x0                 0
fcc5           0x0                 0
fcc6           0x0                 0
fcc7           0x0                 0
...

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/loongarch/include/uapi/asm/ptrace.h
[2] https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#_condition_flag_register

Signed-off-by: Feiyang Chen <chenfeiyang@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2022-08-09 22:22:23 +08:00
Tiezhu Yang
657a50227b gdb: LoongArch: Add floating-point support
This commit adds floating-point support for LoongArch gdb.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2022-07-12 20:14:48 +08:00
Youling Tang
3eba483364 gdbserver: LoongArch: Simplify code with register number macros
Move "enum loongarch_regnum" to gdb/arch/loongarch.h so that the
macro definitions can be used in gdbserver/linux-loongarch-low.cc
to simplify the code.

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2022-07-10 17:27:50 +08:00
Youling Tang
e5ab6af52d gdbserver: Add LoongArch/Linux support
Implement LoongArch/Linux support, including XML target description
handling based on features determined, GPR regset support, and software
breakpoint handling.

In the Linux kernel code of LoongArch, ptrace implements PTRACE_POKEUSR
and PTRACE_PEEKUSR in the arch_ptrace function, so srv_linux_usrregs is
set to yes.

With this patch on LoongArch:

  $ make check-gdb TESTS="gdb.server/server-connect.exp"
  [...]
  # of expected passes		18
  [...]

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2022-06-14 22:21:43 +08:00
Tiezhu Yang
e74d08100d gdb: LoongArch: Add initial target description support
This commit adds initial target description support for LoongArch.

Signed-off-by: Zhensong Liu <liuzhensong@loongson.cn>
Signed-off-by: Qing zhang <zhangqing@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
2022-02-11 20:12:30 +08:00