33 lines
993 B
C
33 lines
993 B
C
#include "tb_cxxrtl_io.h"
|
|
#include "hazard3_csr.h"
|
|
|
|
int main() {
|
|
volatile uint32_t target_word = -1u;
|
|
tb_puts("Store word, 1 byte offset\n");
|
|
asm volatile ("sw zero, 1(%0)" : : "r" (&target_word));
|
|
tb_printf("Target value: %08x\n", target_word);
|
|
tb_puts("Store word, 2 byte offset\n");
|
|
asm volatile ("sw zero, 2(%0)" : : "r" (&target_word));
|
|
tb_printf("Target value: %08x\n", target_word);
|
|
tb_puts("Store word, 3 byte offset\n");
|
|
asm volatile ("sw zero, 3(%0)" : : "r" (&target_word));
|
|
tb_printf("Target value: %08x\n", target_word);
|
|
tb_puts("Aligned store word, sanity check\n");
|
|
asm volatile ("sw zero, 0(%0)" : : "r" (&target_word));
|
|
tb_printf("Target value: %08x\n", target_word);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __attribute__((interrupt)) handle_exception() {
|
|
tb_printf("-> exception, mcause = %u\n", read_csr(mcause));
|
|
write_csr(mcause, 0);
|
|
if (*(uint16_t*)read_csr(mepc) & 0x3 == 0x3) {
|
|
write_csr(mepc, read_csr(mepc) + 4);
|
|
}
|
|
else {
|
|
write_csr(mepc, read_csr(mepc) + 2);
|
|
}
|
|
}
|
|
|