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| author | Xi Ruoyao <xry111@xry111.site> | 2022-07-05 19:30:12 +0800 |
|---|---|---|
| committer | Tiezhu Yang <yangtiezhu@loongson.cn> | 2022-07-05 22:26:45 +0800 |
| commit | 736918239b16cc2ff57bfc64a982f2f0afc8c0f6 (patch) | |
| tree | 72fee59d80679278fc650315af221377586512cb /gdb/loongarch-tdep.h | |
| parent | 4694a0e5fe233c5a33f0e4e4b99c9c92021b8c88 (diff) | |
| download | binutils-gdb-736918239b16cc2ff57bfc64a982f2f0afc8c0f6.tar.gz | |
gdb: LoongArch: add orig_a0 into register set
The basic support for LoongArch has been merged into the upstream Linux
kernel since 5.19-rc1 on June 5, 2022. This commit adds orig_a0 which
is added into struct user_pt_regs [1] to match the upstream kernel, and
then the upstream GDB will work with the upstream kernel.
Note that orig_a0 was added into struct user_pt_regs in the development
cycle for merging LoongArch port into the upstream Linux kernel, so
earlier kernels (notably, the product kernel with version 4.19 used in
distros like UOS and Loongnix) don't have it. Inspect
arch/loongarch/include/uapi/asm/ptrace.h in the kernel tree to make sure.
To build upstream GDB for a kernel lacking orig_a0, it's necessary to
revert this commit locally.
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/loongarch/include/uapi/asm/ptrace.h#n24
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Diffstat (limited to 'gdb/loongarch-tdep.h')
| -rw-r--r-- | gdb/loongarch-tdep.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gdb/loongarch-tdep.h b/gdb/loongarch-tdep.h index 54b34af1d66..acf0191fd65 100644 --- a/gdb/loongarch-tdep.h +++ b/gdb/loongarch-tdep.h @@ -35,9 +35,10 @@ enum LOONGARCH_A0_REGNUM = 4, /* First Argument/Return Value. */ LOONGARCH_A7_REGNUM = 11, /* Seventh Argument/Syscall Number. */ LOONGARCH_FP_REGNUM = 22, /* Frame Pointer. */ - LOONGARCH_PC_REGNUM = 32, /* Program Counter. */ - LOONGARCH_BADV_REGNUM = 33, /* Bad Vaddr for Addressing Exception. */ - LOONGARCH_LINUX_NUM_GREGSET = 45, /* 32 GPR, PC, BADV, RESERVED 11. */ + LOONGARCH_ORIG_A0_REGNUM = 32, /* Syscall's original arg0. */ + LOONGARCH_PC_REGNUM = 33, /* Program Counter. */ + LOONGARCH_BADV_REGNUM = 34, /* Bad Vaddr for Addressing Exception. */ + LOONGARCH_LINUX_NUM_GREGSET = 45, /* 32 GPR, ORIG_A0, PC, BADV, RESERVED 10. */ }; /* Register set definitions. */ |