diff options
Diffstat (limited to 'components/lwp/lwp_user_mm.c')
| -rw-r--r-- | components/lwp/lwp_user_mm.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/components/lwp/lwp_user_mm.c b/components/lwp/lwp_user_mm.c index 3844a3b189..edda62632d 100644 --- a/components/lwp/lwp_user_mm.c +++ b/components/lwp/lwp_user_mm.c @@ -560,9 +560,12 @@ int lwp_user_accessable(void *addr, size_t size) len = size; } tmp_addr = lwp_v2p(lwp, addr_start); - if (!tmp_addr) + if (tmp_addr == ARCH_MAP_FAILED) { - return 0; + if ((rt_ubase_t)addr_start >= USER_STACK_VSTART && (rt_ubase_t)addr_start < USER_STACK_VEND) + tmp_addr = *(void **)addr_start; + else + return 0; } addr_start = (void *)((char *)addr_start + len); size -= len; @@ -596,7 +599,7 @@ size_t lwp_data_get(struct rt_lwp *lwp, void *dst, void *src, size_t size) len = size; } tmp_src = lwp_v2p(lwp, addr_start); - if (!tmp_src) + if (tmp_src == ARCH_MAP_FAILED) { break; } @@ -636,7 +639,7 @@ size_t lwp_data_put(struct rt_lwp *lwp, void *dst, void *src, size_t size) len = size; } tmp_dst = lwp_v2p(lwp, addr_start); - if (!tmp_dst) + if (tmp_dst == ARCH_MAP_FAILED) { break; } |