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uti: Allocate memory area directly to uti_desc->wp

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Change-Id: Ia5a1dbf56b937d9d05cd7fa1c5eec4a5b4b7b196
This commit is contained in:
Masamichi Takagi
2018-09-02 11:49:17 +09:00
parent 35300e7b4f
commit 56da7e2de9
1 changed files with 10 additions and 11 deletions
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21
executer/user/mcexec.c
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@ -1964,8 +1964,7 @@ struct uti_desc {
static int create_tracer();
int uti_pfd[2];
void *uti_wp;
struct uti_desc *uti_desc;
struct uti_desc *uti_desc = (void*)-1;
int main(int argc, char **argv)
{
@ -2899,9 +2898,9 @@ create_tracer()
memset(uti_desc, 0, sizeof(struct uti_desc));
sem_init(&uti_desc->arg, 1, 0);
sem_init(&uti_desc->attach, 1, 0);
uti_wp = mmap(NULL, PAGE_SIZE * 3, PROT_READ | PROT_WRITE,
uti_desc->wp = mmap(NULL, PAGE_SIZE * 3, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0);
if (uti_wp == (void *)-1) {
if (uti_desc->wp == (void *)-1) {
return -1;
}
@ -3184,17 +3183,17 @@ util_thread(struct thread_data_s *my_thread, unsigned long uctx_pa, int remote_t
}
#endif
#ifdef POSTK_DEBUG_ARCH_DEP_35
lctx = (char *)uti_wp + page_size;
lctx = (char *)uti_desc->wp + page_size;
rctx = (char *)lctx + page_size;
#else
lctx = (char *)uti_wp + PAGE_SIZE;
lctx = (char *)uti_desc->wp + PAGE_SIZE;
rctx = (char *)lctx + PAGE_SIZE;
#endif /* POSTK_DEBUG_ARCH_DEP_35 */
param[0] = (void *)uctx_pa;
param[1] = rctx;
param[2] = lctx;
param[4] = uti_wp;
param[4] = uti_desc->wp;
#ifdef POSTK_DEBUG_ARCH_DEP_35
param[5] = (void *)(page_size * 3);
#else /* POSTK_DEBUG_ARCH_DEP_35 */
@ -3209,7 +3208,7 @@ util_thread(struct thread_data_s *my_thread, unsigned long uctx_pa, int remote_t
create_worker_thread(NULL);
/* Pass info to the tracer so that it can masquerade as the tracee */
uti_desc->wp = uti_wp;
uti_desc->wp = uti_desc->wp;
uti_desc->mck_tid = remote_tid;
uti_desc->key = (unsigned long)param[3];
uti_desc->pid = getpid();
@ -3260,11 +3259,11 @@ util_thread(struct thread_data_s *my_thread, unsigned long uctx_pa, int remote_t
pthread_exit(NULL);
out:
if (uti_wp != (void*)-1)
if (uti_desc != (void*)-1 && uti_desc->wp != (void*)-1)
#ifdef POSTK_DEBUG_ARCH_DEP_35
munmap(uti_wp, page_size * 3);
munmap(uti_desc->wp, page_size * 3);
#else /* POSTK_DEBUG_ARCH_DEP_35 */
munmap(uti_wp, PAGE_SIZE * 3);
munmap(uti_desc->wp, PAGE_SIZE * 3);
#endif /* POSTK_DEBUG_ARCH_DEP_35 */
return rc;
}