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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/features | |
| parent | 4694a0e5fe233c5a33f0e4e4b99c9c92021b8c88 (diff) | |
| download | fsf-binutils-gdb-736918239b16cc2ff57bfc64a982f2f0afc8c0f6.zip fsf-binutils-gdb-736918239b16cc2ff57bfc64a982f2f0afc8c0f6.tar.gz fsf-binutils-gdb-736918239b16cc2ff57bfc64a982f2f0afc8c0f6.tar.bz2 | |
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/features')
| -rw-r--r-- | gdb/features/loongarch/base32.c | 1 | ||||
| -rw-r--r-- | gdb/features/loongarch/base32.xml | 1 | ||||
| -rw-r--r-- | gdb/features/loongarch/base64.c | 1 | ||||
| -rw-r--r-- | gdb/features/loongarch/base64.xml | 1 |
4 files changed, 4 insertions, 0 deletions
diff --git a/gdb/features/loongarch/base32.c b/gdb/features/loongarch/base32.c index 7105c15..3fb35ef 100644 --- a/gdb/features/loongarch/base32.c +++ b/gdb/features/loongarch/base32.c @@ -41,6 +41,7 @@ create_feature_loongarch_base32 (struct target_desc *result, long regnum) tdesc_create_reg (feature, "r29", regnum++, 1, "general", 32, "uint32"); tdesc_create_reg (feature, "r30", regnum++, 1, "general", 32, "uint32"); tdesc_create_reg (feature, "r31", regnum++, 1, "general", 32, "uint32"); + tdesc_create_reg (feature, "orig_a0", regnum++, 1, "general", 32, "uint32"); tdesc_create_reg (feature, "pc", regnum++, 1, "general", 32, "code_ptr"); tdesc_create_reg (feature, "badv", regnum++, 1, "general", 32, "code_ptr"); return regnum; diff --git a/gdb/features/loongarch/base32.xml b/gdb/features/loongarch/base32.xml index 5b00f8a..af47bbd 100644 --- a/gdb/features/loongarch/base32.xml +++ b/gdb/features/loongarch/base32.xml @@ -39,6 +39,7 @@ <reg name="r29" bitsize="32" type="uint32" group="general"/> <reg name="r30" bitsize="32" type="uint32" group="general"/> <reg name="r31" bitsize="32" type="uint32" group="general"/> + <reg name="orig_a0" bitsize="32" type="uint32" group="general"/> <reg name="pc" bitsize="32" type="code_ptr" group="general"/> <reg name="badv" bitsize="32" type="code_ptr" group="general"/> </feature> diff --git a/gdb/features/loongarch/base64.c b/gdb/features/loongarch/base64.c index 63eee02..d84d425 100644 --- a/gdb/features/loongarch/base64.c +++ b/gdb/features/loongarch/base64.c @@ -41,6 +41,7 @@ create_feature_loongarch_base64 (struct target_desc *result, long regnum) tdesc_create_reg (feature, "r29", regnum++, 1, "general", 64, "uint64"); tdesc_create_reg (feature, "r30", regnum++, 1, "general", 64, "uint64"); tdesc_create_reg (feature, "r31", regnum++, 1, "general", 64, "uint64"); + tdesc_create_reg (feature, "orig_a0", regnum++, 1, "general", 64, "uint64"); tdesc_create_reg (feature, "pc", regnum++, 1, "general", 64, "code_ptr"); tdesc_create_reg (feature, "badv", regnum++, 1, "general", 64, "code_ptr"); return regnum; diff --git a/gdb/features/loongarch/base64.xml b/gdb/features/loongarch/base64.xml index bef91e5..2d8a1f6 100644 --- a/gdb/features/loongarch/base64.xml +++ b/gdb/features/loongarch/base64.xml @@ -39,6 +39,7 @@ <reg name="r29" bitsize="64" type="uint64" group="general"/> <reg name="r30" bitsize="64" type="uint64" group="general"/> <reg name="r31" bitsize="64" type="uint64" group="general"/> + <reg name="orig_a0" bitsize="64" type="uint64" group="general"/> <reg name="pc" bitsize="64" type="code_ptr" group="general"/> <reg name="badv" bitsize="64" type="code_ptr" group="general"/> </feature> |