diff options
| author | Yulong Wang <[email protected]> | 2025-07-12 13:10:48 +0000 |
|---|---|---|
| committer | Rbb666 <[email protected]> | 2025-07-23 09:38:35 +0800 |
| commit | e7a40ae6ec1fdcb0d74a4902cfbd50aee7ee8e8f (patch) | |
| tree | 07a0746d811356206dfe332e5318862a034063c2 | |
| parent | 3c046646cbba093c5ffaf2721d11391a5417fe2a (diff) | |
[lwp][rv64] restore tp register in arch_thread_signal_enter to fix user-mode memory access
| -rw-r--r-- | components/lwp/arch/risc-v/rv64/lwp_gcc.S | 3 | ||||
| -rw-r--r-- | libcpu/risc-v/common64/stackframe.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/components/lwp/arch/risc-v/rv64/lwp_gcc.S b/components/lwp/arch/risc-v/rv64/lwp_gcc.S index c207285c6f..9290923191 100644 --- a/components/lwp/arch/risc-v/rv64/lwp_gcc.S +++ b/components/lwp/arch/risc-v/rv64/lwp_gcc.S @@ -178,6 +178,9 @@ arch_thread_signal_enter: /* restore user GP */ LOAD gp, FRAME_OFF_GP(s3) + /* restore user TP */ + LOAD tp, FRAME_OFF_TP(s3) + /** * handler(signo, psi, ucontext); */ diff --git a/libcpu/risc-v/common64/stackframe.h b/libcpu/risc-v/common64/stackframe.h index f6311a76fe..25346db9bd 100644 --- a/libcpu/risc-v/common64/stackframe.h +++ b/libcpu/risc-v/common64/stackframe.h @@ -41,6 +41,7 @@ #define FRAME_OFF_SSTATUS BYTES(2) #define FRAME_OFF_SP BYTES(32) #define FRAME_OFF_GP BYTES(3) +#define FRAME_OFF_TP BYTES(4) /* switch frame */ #define RT_HW_SWITCH_CONTEXT_SSTATUS 0 |