Red Bear OS
1b3e94a20d
From release 0.1.0 pre-patched archive. This includes all Red Bear modifications previously maintained as patches in local/patches/relibc/.
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "common.h"
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#define STACKSIZE 128 * 1024
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struct retval {
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uintptr_t some_stack_pointer;
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};
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struct arg {
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int status;
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};
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void *routine(void *arg_raw) {
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struct arg *arg = arg_raw;
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struct retval *retval = malloc(sizeof(struct retval));
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if (retval == NULL) {
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arg->status = ENOMEM;
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return NULL;
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}
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char some_array[256] = { 0 };
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retval->some_stack_pointer = black_box_uintptr_t((uintptr_t)some_array);
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return retval;
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}
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int main(void) {
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int status;
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static char stack[STACKSIZE];
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pthread_attr_t attr;
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if ((status = pthread_attr_init(&attr)) != 0) {
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return fail(status, "attr init");
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}
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if ((status = pthread_attr_setstack(&attr, stack, STACKSIZE)) != 0) {
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return fail(status, "attr setstack");
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}
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void *stack_again;
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size_t stacksize_again;
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if ((status = pthread_attr_getstack(&attr, &stack_again, &stacksize_again)) != 0) {
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return fail(status, "attr getstack");
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}
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assert(stack_again == stack);
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assert(stacksize_again == STACKSIZE);
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pthread_t thread;
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if ((status = pthread_create(&thread, &attr, routine, NULL)) != 0) {
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return fail(status, "pthread create");
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}
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if ((status = pthread_attr_destroy(&attr)) != 0) {
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return fail(status, "attr destroy");
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}
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void *retval_raw;
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if ((status = pthread_join(thread, &retval_raw)) != 0) {
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return fail(status, "pthread join");
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}
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struct retval *retval = retval_raw;
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assert(retval->some_stack_pointer >= (uintptr_t)stack);
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assert(retval->some_stack_pointer < ((uintptr_t)stack) + STACKSIZE);
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free(retval);
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return EXIT_SUCCESS;
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}
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