diff options
| author | Song Gao <gaosong@loongson.cn> | 2022-08-05 11:35:19 +0800 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2022-08-05 10:02:40 -0700 |
| commit | 1fe8ac3511fc771376019c6bfe77f317c5e56cd6 (patch) | |
| tree | 11b25f90bc015ee0ad35137c8ff3a3aea7c115d0 | |
| parent | 4cbadc40b99801488bf8d5153d56ae751af15ab9 (diff) | |
target/loongarch: Fix GDB get the wrong pc
GDB LoongArch add a register orig_a0, see the base64.xml [1].
We should add the orig_a0 to match the upstream GDB.
[1]: https://github.com/bminor/binutils-gdb/blob/master/gdb/features/loongarch/base64.xml
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220805033523.1416837-2-gaosong@loongson.cn>
| -rw-r--r-- | gdb-xml/loongarch-base64.xml | 1 | ||||
| -rw-r--r-- | target/loongarch/cpu.c | 2 | ||||
| -rw-r--r-- | target/loongarch/gdbstub.c | 7 |
3 files changed, 7 insertions, 3 deletions
diff --git a/gdb-xml/loongarch-base64.xml b/gdb-xml/loongarch-base64.xml index 4962bdbd28..a1dd4f2208 100644 --- a/gdb-xml/loongarch-base64.xml +++ b/gdb-xml/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="badvaddr" bitsize="64" type="code_ptr" group="general"/> </feature> diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 1c69a76f2b..d84ec38cf7 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -683,7 +683,7 @@ static void loongarch_cpu_class_init(ObjectClass *c, void *data) cc->gdb_read_register = loongarch_cpu_gdb_read_register; cc->gdb_write_register = loongarch_cpu_gdb_write_register; cc->disas_set_info = loongarch_cpu_disas_set_info; - cc->gdb_num_core_regs = 34; + cc->gdb_num_core_regs = 35; cc->gdb_core_xml_file = "loongarch-base64.xml"; cc->gdb_stop_before_watchpoint = true; diff --git a/target/loongarch/gdbstub.c b/target/loongarch/gdbstub.c index 24e126fb2d..5feb43445f 100644 --- a/target/loongarch/gdbstub.c +++ b/target/loongarch/gdbstub.c @@ -19,8 +19,11 @@ int loongarch_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) if (0 <= n && n < 32) { return gdb_get_regl(mem_buf, env->gpr[n]); } else if (n == 32) { - return gdb_get_regl(mem_buf, env->pc); + /* orig_a0 */ + return gdb_get_regl(mem_buf, 0); } else if (n == 33) { + return gdb_get_regl(mem_buf, env->pc); + } else if (n == 34) { return gdb_get_regl(mem_buf, env->CSR_BADV); } return 0; @@ -36,7 +39,7 @@ int loongarch_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) if (0 <= n && n < 32) { env->gpr[n] = tmp; length = sizeof(target_ulong); - } else if (n == 32) { + } else if (n == 33) { env->pc = tmp; length = sizeof(target_ulong); } |