user
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
#include "c10_common.h"
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volatile uint32_t g_task01_count;
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volatile uint32_t g_task01_mcause;
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volatile uint32_t g_task01_mepc;
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volatile uint32_t g_task01_resume_pc;
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volatile uint32_t g_task01_resumed;
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volatile uint32_t g_task01_pass;
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void __attribute__((interrupt("machine"))) handle_exception(void)
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{
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const uint32_t cause = read_csr(mcause);
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const uint32_t pc = read_csr(mepc);
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g_task01_count++;
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g_task01_mcause = cause;
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g_task01_mepc = pc;
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g_task01_resume_pc = pc + 4u;
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write_csr(mepc, g_task01_resume_pc);
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}
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int main(void)
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{
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c10_disable_interrupts();
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__asm__ volatile("ecall");
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g_task01_resumed = 1u;
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g_task01_pass = g_task01_count == 1u &&
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g_task01_mcause == MACHINE_ECALL_CAUSE &&
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g_task01_resume_pc - g_task01_mepc == 4u &&
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g_task01_resumed == 1u;
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c10_report("T01 count=", g_task01_count);
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c10_report("T01 mcause=", g_task01_mcause);
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c10_report("T01 mepc=", g_task01_mepc);
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c10_report("T01 resume_pc=", g_task01_resume_pc);
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c10_report("T01 delta=", g_task01_resume_pc - g_task01_mepc);
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c10_report("T01 resumed=", g_task01_resumed);
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c10_report("T01 pass=", g_task01_pass);
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return g_task01_pass ? 0 : 1;
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}
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