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Test metering, prove that system can resume after a hang error with a range of meter sizes

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This commit is contained in:
Toby Jaffey 2025-12-10 22:30:19 +00:00
parent 9d9e7542fc
commit ac1975a820
14 changed files with 222 additions and 53 deletions
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58
test/meter/test/tests.c Normal file
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#include <string.h>
#include "unity.h"
#include "uvm32.h"
#include "../common/uvm32_common_custom.h"
#include "rom-header.h"
static uvm32_state_t vmst;
static uvm32_evt_t evt;
void setUp(void) {
// runs before each test
uvm32_init(&vmst);
uvm32_load(&vmst, rom_bin, rom_bin_len);
}
void tearDown(void) {
}
// run program until printdec() reaches 100
// every time it hangs, resume
// run in batches of num_instr
void metered_run(uint32_t num_instr) {
uint32_t expected = 0;
while(expected < 100) {
uvm32_run(&vmst, &evt, num_instr);
switch(evt.typ) {
case UVM32_EVT_SYSCALL: {
TEST_ASSERT_EQUAL(UVM32_SYSCALL_PRINTDEC, evt.data.syscall.code);
uint32_t val = uvm32_getval(&vmst, &evt, ARG0);
TEST_ASSERT_EQUAL(val, expected);
expected++;
} break;
case UVM32_EVT_ERR:
TEST_ASSERT_EQUAL(evt.data.err.errcode, UVM32_ERR_HUNG);
uvm32_clearError(&vmst); // clear the hung error so it can continue
break;
case UVM32_EVT_END:
TEST_ASSERT_EQUAL(0, 1); // trigger an assert, we didn't get to 100000 yet
break;
}
}
// run vm to completion
uvm32_run(&vmst, &evt, 10000);
TEST_ASSERT_EQUAL(evt.typ, UVM32_EVT_END);
}
void test_meter(void) {
// test many different meter values, including 0 (which should run 1 instruction, as 0 is going to hang)
for (uint32_t i=0;i<1000;i++) {
uvm32_init(&vmst);
uvm32_load(&vmst, rom_bin, rom_bin_len);
metered_run(i);
}
}