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| author | Hui Li <lihui@loongson.cn> | 2023-02-16 09:22:25 +0800 |
|---|---|---|
| committer | Tiezhu Yang <yangtiezhu@loongson.cn> | 2023-02-23 20:36:02 +0800 |
| commit | 0373a76af6b8ef949b9ca8aaa6325fbde0948603 (patch) | |
| tree | 8bc5d0033e074373253f924b2b2552f3a07a3d2a /gdb/loongarch-tdep.c | |
| parent | 9d7c73af4bf5f1d416a90ec5327279b6f1092a83 (diff) | |
| download | gdb-0373a76af6b8ef949b9ca8aaa6325fbde0948603.zip gdb-0373a76af6b8ef949b9ca8aaa6325fbde0948603.tar.gz gdb-0373a76af6b8ef949b9ca8aaa6325fbde0948603.tar.bz2 | |
gdb: LoongArch: Support reg aliases in info reg command
According to LoongArch ELF ABI specification [1], support the register
aliases in "info register" command.
Without this patch:
```
(gdb) info reg a0
Invalid register `a0'
```
With this patch:
```
(gdb) info reg a0
a0 0x1 1
```
[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_register_convention
Signed-off-by: Hui Li <lihui@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Diffstat (limited to 'gdb/loongarch-tdep.c')
| -rw-r--r-- | gdb/loongarch-tdep.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c index 67ea549..f5ddad0 100644 --- a/gdb/loongarch-tdep.c +++ b/gdb/loongarch-tdep.c @@ -387,6 +387,14 @@ loongarch_software_single_step (struct regcache *regcache) return {next_pc}; } +/* Callback function for user_reg_add. */ + +static struct value * +value_of_loongarch_user_reg (frame_info_ptr frame, const void *baton) +{ + return value_of_register ((long long) baton, frame); +} + /* Implement the frame_align gdbarch method. */ static CORE_ADDR @@ -1589,6 +1597,19 @@ loongarch_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) info.target_desc = tdesc; info.tdesc_data = tdesc_data.get (); + for (int i = 0; i < ARRAY_SIZE (loongarch_r_lp64_name); ++i) + if (loongarch_r_lp64_name[i][0] != '\0') + user_reg_add (gdbarch, loongarch_r_lp64_name[i] + 1, + value_of_loongarch_user_reg, (void *) (size_t) i); + + for (int i = 0; i < ARRAY_SIZE (loongarch_f_lp64_name); ++i) + { + if (loongarch_f_lp64_name[i][0] != '\0') + user_reg_add (gdbarch, loongarch_f_lp64_name[i] + 1, + value_of_loongarch_user_reg, + (void *) (size_t) (LOONGARCH_FIRST_FP_REGNUM + i)); + } + /* Information about registers. */ set_gdbarch_num_regs (gdbarch, regnum); set_gdbarch_sp_regnum (gdbarch, LOONGARCH_SP_REGNUM); |