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native,platform: small refactor

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This commit is contained in:
Zihao Yu 2022-11-09 16:23:46 +08:00
parent ad9504123f
commit e8f6374f4b
1 changed files with 2 additions and 3 deletions
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5
am/src/native/platform.c
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@ -14,12 +14,11 @@
static int pmem_fd = 0; static int pmem_fd = 0;
static void *pmem = NULL; static void *pmem = NULL;
static ucontext_t uc_example = {}; static ucontext_t uc_example = {};
static int sys_pgsz;
static void *(*memcpy_libc)(void *, const void *, size_t) = NULL; static void *(*memcpy_libc)(void *, const void *, size_t) = NULL;
sigset_t __am_intr_sigmask = {}; sigset_t __am_intr_sigmask = {};
__am_cpu_t *__am_cpu_struct = NULL; __am_cpu_t *__am_cpu_struct = NULL;
int __am_ncpu = 0; int __am_ncpu = 0;
int __am_pgsize; int __am_pgsize = 0;
static void save_context_handler(int sig, siginfo_t *info, void *ucontext) { static void save_context_handler(int sig, siginfo_t *info, void *ucontext) {
memcpy_libc(&uc_example, ucontext, sizeof(uc_example)); memcpy_libc(&uc_example, ucontext, sizeof(uc_example));
@ -78,7 +77,7 @@ static void init_platform() {
thiscpu->vm_head = NULL; thiscpu->vm_head = NULL;
// create trap page to receive syscall and yield by SIGSEGV // create trap page to receive syscall and yield by SIGSEGV
sys_pgsz = sysconf(_SC_PAGESIZE); int sys_pgsz = sysconf(_SC_PAGESIZE);
void *ret = mmap(TRAP_PAGE_START, sys_pgsz, PROT_NONE, void *ret = mmap(TRAP_PAGE_START, sys_pgsz, PROT_NONE,
MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0); MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
assert(ret != (void *)-1); assert(ret != (void *)-1);