feat: add lab-rv32i-c-interrupts card

2026-07-21 19:14:20 +02:00
commit 8820c2a22e
23 changed files with 4433 additions and 0 deletions
@@ -0,0 +1,41 @@
+#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;
+}