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#include "wasm/setjmp.h"
#include "wasm/asyncify.h"
#include "wasm/machine.h"
#include <stdio.h>
#include <assert.h>
void check_direct(void) {
rb_wasm_jmp_buf buf;
int val;
printf("[%s] start\n", __func__);
printf("[%s] call rb_wasm_setjmp\n", __func__);
if ((val = rb_wasm_setjmp(buf)) == 0) {
printf("[%s] rb_wasm_setjmp(buf) == 0\n", __func__);
printf("[%s] call rb_wasm_longjmp(buf, 2)\n", __func__);
rb_wasm_longjmp(buf, 2);
assert(0 && "unreachable after longjmp");
} else {
printf("[%s] rb_wasm_setjmp(buf) == %d\n", __func__, val);
printf("[%s] sp = %p\n", __func__, rb_wasm_get_stack_pointer());
assert(val == 2 && "unexpected returned value");
}
printf("[%s] end\n", __func__);
}
void jump_to_dst(rb_wasm_jmp_buf *dst) {
rb_wasm_jmp_buf buf;
printf("[%s] start sp = %p\n", __func__, rb_wasm_get_stack_pointer());
printf("[%s] call rb_wasm_setjmp\n", __func__);
if (rb_wasm_setjmp(buf) == 0) {
printf("[%s] rb_wasm_setjmp(buf) == 0\n", __func__);
printf("[%s] call rb_wasm_longjmp(dst, 4)\n", __func__);
rb_wasm_longjmp(*dst, 4);
assert(0 && "unreachable after longjmp");
} else {
assert(0 && "unreachable");
}
printf("[%s] end\n", __func__);
}
void check_jump_two_level(void) {
rb_wasm_jmp_buf buf;
int val;
printf("[%s] start\n", __func__);
printf("[%s] call rb_wasm_setjmp\n", __func__);
if ((val = rb_wasm_setjmp(buf)) == 0) {
printf("[%s] rb_wasm_setjmp(buf) == 0\n", __func__);
printf("[%s] call jump_to_dst(&buf)\n", __func__);
jump_to_dst(&buf);
assert(0 && "unreachable after longjmp");
} else {
printf("[%s] rb_wasm_setjmp(buf) == %d\n", __func__, val);
assert(val == 4 && "unexpected returned value");
}
printf("[%s] end\n", __func__);
}
void check_reuse(void) {
rb_wasm_jmp_buf buf;
int val;
printf("[%s] start\n", __func__);
printf("[%s] call rb_wasm_setjmp\n", __func__);
if ((val = rb_wasm_setjmp(buf)) == 0) {
printf("[%s] rb_wasm_setjmp(buf) == 0\n", __func__);
printf("[%s] call rb_wasm_longjmp(buf, 2)\n", __func__);
rb_wasm_longjmp(buf, 2);
assert(0 && "unreachable after longjmp");
} else {
printf("[%s] rb_wasm_setjmp(buf) == %d\n", __func__, val);
if (val < 5) {
printf("[%s] re-call rb_wasm_longjmp(buf, %d)\n", __func__, val + 1);
rb_wasm_longjmp(buf, val + 1);
}
}
printf("[%s] end\n", __func__);
}
void check_stack_ptr(void) {
static void *normal_sp;
rb_wasm_jmp_buf buf;
normal_sp = rb_wasm_get_stack_pointer();
printf("[%s] start sp = %p\n", __func__, normal_sp);
printf("[%s] call rb_wasm_setjmp\n", __func__);
if (rb_wasm_setjmp(buf) == 0) {
printf("[%s] call jump_to_dst(&buf)\n", __func__);
jump_to_dst(&buf);
assert(0 && "unreachable after longjmp");
} else {
printf("[%s] sp = %p\n", __func__, rb_wasm_get_stack_pointer());
assert(rb_wasm_get_stack_pointer() == normal_sp);
}
printf("[%s] end\n", __func__);
}
// top level function should not be inlined to stop unwinding immediately after this function returns
__attribute__((noinline))
int start(int argc, char **argv) {
check_direct();
check_jump_two_level();
check_reuse();
check_stack_ptr();
return 0;
}
int main(int argc, char **argv) {
extern int rb_wasm_rt_start(int (main)(int argc, char **argv), int argc, char **argv);
return rb_wasm_rt_start(start, argc, argv);
}
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