diff options
Diffstat (limited to 'libcpu/risc-v/virt64')
| -rw-r--r-- | libcpu/risc-v/virt64/stackframe.h | 7 | ||||
| -rw-r--r-- | libcpu/risc-v/virt64/trap.c | 5 |
2 files changed, 8 insertions, 4 deletions
diff --git a/libcpu/risc-v/virt64/stackframe.h b/libcpu/risc-v/virt64/stackframe.h index 5b546f01f9..550fa8947e 100644 --- a/libcpu/risc-v/virt64/stackframe.h +++ b/libcpu/risc-v/virt64/stackframe.h @@ -18,8 +18,9 @@ #include "encoding.h" #include "ext_context.h" -#define BYTES(idx) ((idx) * REGBYTES) -#define FRAME_OFF_SSTATUS BYTES(2) +#define BYTES(idx) ((idx) * REGBYTES) +#define FRAME_OFF_SSTATUS BYTES(2) +#define FRAME_OFF_SP BYTES(32) #ifdef __ASSEMBLY__ @@ -140,7 +141,7 @@ /** * @brief Restore All General Registers, for interrupt handling - * + * */ .macro RESTORE_ALL diff --git a/libcpu/risc-v/virt64/trap.c b/libcpu/risc-v/virt64/trap.c index 7b3bafae88..b9f30ed715 100644 --- a/libcpu/risc-v/virt64/trap.c +++ b/libcpu/risc-v/virt64/trap.c @@ -274,6 +274,9 @@ static void handle_nested_trap_panic( rt_hw_cpu_shutdown(); } +#define IN_USER_SPACE (stval >= USER_VADDR_START && stval < USER_VADDR_TOP) +#define PAGE_FAULT (id == EP_LOAD_PAGE_FAULT || id == EP_STORE_PAGE_FAULT) + /* Trap entry */ void handle_trap(rt_size_t scause, rt_size_t stval, rt_size_t sepc, struct rt_hw_stack_frame *sp) { @@ -326,7 +329,7 @@ void handle_trap(rt_size_t scause, rt_size_t stval, rt_size_t sepc, struct rt_hw } #endif /* ENABLE_VECTOR */ #ifdef RT_USING_SMART - if (!(sp->sstatus & 0x100)) + if (!(sp->sstatus & 0x100) || (PAGE_FAULT && IN_USER_SPACE)) { handle_user(scause, stval, sepc, sp); // if handle_user() return here, jump to u mode then |