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am,native,platform: avoid linking ftruncate() to RT-Thread

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This commit is contained in:
Zihao Yu 2023-06-04 16:27:21 +08:00
parent e8943b31fc
commit 21bfbcb293
1 changed files with 5 additions and 2 deletions
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7
am/src/native/platform.c
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@ -63,7 +63,11 @@ static void init_platform() {
// create memory object and set up mapping to simulate the physical memory
pmem_fd = memfd_create("pmem", 0);
assert(pmem_fd != -1);
assert(0 == ftruncate(pmem_fd, PMEM_SIZE));
// use dynamic linking to avoid linking to the same function in RT-Thread
int (*ftruncate_libc)(int, off_t) = dlsym(RTLD_NEXT, "ftruncate");
assert(ftruncate_libc != NULL);
int ret2 = ftruncate_libc(pmem_fd, PMEM_SIZE);
assert(ret2 == 0);
pmem = mmap(PMEM_START, PMEM_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_SHARED | MAP_FIXED, pmem_fd, 0);
@ -90,7 +94,6 @@ static void init_platform() {
Elf64_Phdr *phdr = (void *)getauxval(AT_PHDR);
int phnum = (int)getauxval(AT_PHNUM);
int i;
int ret2;
for (i = 0; i < phnum; i ++) {
if (phdr[i].p_type == PT_LOAD && (phdr[i].p_flags & PF_W)) {
// allocate temporary memory