#include "c10_common.h"

volatile uint32_t g_task01_count;
volatile uint32_t g_task01_mcause;
volatile uint32_t g_task01_mepc;
volatile uint32_t g_task01_resume_pc;
volatile uint32_t g_task01_resumed;
volatile uint32_t g_task01_pass;

void __attribute__((interrupt("machine"))) handle_exception(void)
{
    const uint32_t cause = read_csr(mcause);
    const uint32_t pc = read_csr(mepc);

    g_task01_count++;
    g_task01_mcause = cause;
    g_task01_mepc = pc;
    g_task01_resume_pc = pc + 4u;
    write_csr(mepc, g_task01_resume_pc);
}

int main(void)
{
    c10_disable_interrupts();
    __asm__ volatile("ecall");
    g_task01_resumed = 1u;

    g_task01_pass = g_task01_count == 1u &&
                    g_task01_mcause == MACHINE_ECALL_CAUSE &&
                    g_task01_resume_pc - g_task01_mepc == 4u &&
                    g_task01_resumed == 1u;

    c10_report("T01 count=", g_task01_count);
    c10_report("T01 mcause=", g_task01_mcause);
    c10_report("T01 mepc=", g_task01_mepc);
    c10_report("T01 resume_pc=", g_task01_resume_pc);
    c10_report("T01 delta=", g_task01_resume_pc - g_task01_mepc);
    c10_report("T01 resumed=", g_task01_resumed);
    c10_report("T01 pass=", g_task01_pass);
    return g_task01_pass ? 0 : 1;
}