112771Sqtt2@cornell.edu# See LICENSE for license details. 212771Sqtt2@cornell.edu 312771Sqtt2@cornell.edu#***************************************************************************** 412771Sqtt2@cornell.edu# scall.S 512771Sqtt2@cornell.edu#----------------------------------------------------------------------------- 612771Sqtt2@cornell.edu# 712771Sqtt2@cornell.edu# Test syscall trap. 812771Sqtt2@cornell.edu# 912771Sqtt2@cornell.edu 1012771Sqtt2@cornell.edu#include "riscv_test.h" 1112771Sqtt2@cornell.edu#include "test_macros.h" 1212771Sqtt2@cornell.edu 1312771Sqtt2@cornell.eduRVTEST_RV64S 1412771Sqtt2@cornell.eduRVTEST_CODE_BEGIN 1512771Sqtt2@cornell.edu 1612771Sqtt2@cornell.edu#ifdef __MACHINE_MODE 1712771Sqtt2@cornell.edu #define sscratch mscratch 1812771Sqtt2@cornell.edu #define sstatus mstatus 1912771Sqtt2@cornell.edu #define scause mcause 2012771Sqtt2@cornell.edu #define sepc mepc 2112771Sqtt2@cornell.edu #define sret mret 2212771Sqtt2@cornell.edu #define stvec_handler mtvec_handler 2312771Sqtt2@cornell.edu #undef SSTATUS_SPP 2412771Sqtt2@cornell.edu #define SSTATUS_SPP MSTATUS_MPP 2512771Sqtt2@cornell.edu#endif 2612771Sqtt2@cornell.edu 2712771Sqtt2@cornell.edu li TESTNUM, 2 2812771Sqtt2@cornell.edu 2912771Sqtt2@cornell.edu # This is the expected trap code. 3012771Sqtt2@cornell.edu li t1, CAUSE_USER_ECALL 3112771Sqtt2@cornell.edu 3212771Sqtt2@cornell.edu#ifdef __MACHINE_MODE 3312771Sqtt2@cornell.edu # If running in M mode, use mstatus.MPP to check existence of U mode. 3412771Sqtt2@cornell.edu # Otherwise, if in S mode, then U mode must exist and we don't need to check. 3512771Sqtt2@cornell.edu li t0, MSTATUS_MPP 3612771Sqtt2@cornell.edu csrc mstatus, t0 3712771Sqtt2@cornell.edu csrr t1, mstatus 3812771Sqtt2@cornell.edu and t0, t0, t1 3912771Sqtt2@cornell.edu beqz t0, 1f 4012771Sqtt2@cornell.edu 4112771Sqtt2@cornell.edu # If U mode doesn't exist, mcause should indicate ECALL from M mode. 4212771Sqtt2@cornell.edu li t1, CAUSE_MACHINE_ECALL 4312771Sqtt2@cornell.edu#endif 4412771Sqtt2@cornell.edu 4512771Sqtt2@cornell.edu1: 4612771Sqtt2@cornell.edu li t0, SSTATUS_SPP 4712771Sqtt2@cornell.edu csrc sstatus, t0 4812771Sqtt2@cornell.edu la t0, 1f 4912771Sqtt2@cornell.edu csrw sepc, t0 5012771Sqtt2@cornell.edu sret 5112771Sqtt2@cornell.edu1: 5212771Sqtt2@cornell.edu 5312771Sqtt2@cornell.edu li TESTNUM, 1 5412771Sqtt2@cornell.edudo_scall: 5512771Sqtt2@cornell.edu scall 5612771Sqtt2@cornell.edu j fail 5712771Sqtt2@cornell.edu 5812771Sqtt2@cornell.edu TEST_PASSFAIL 5912771Sqtt2@cornell.edu 6012771Sqtt2@cornell.edu .align 2 6112771Sqtt2@cornell.edu .global stvec_handler 6212771Sqtt2@cornell.edustvec_handler: 6312771Sqtt2@cornell.edu csrr t0, scause 6412771Sqtt2@cornell.edu bne t0, t1, fail 6512771Sqtt2@cornell.edu la t2, do_scall 6612771Sqtt2@cornell.edu csrr t0, sepc 6712771Sqtt2@cornell.edu bne t0, t2, fail 6812771Sqtt2@cornell.edu j pass 6912771Sqtt2@cornell.edu 7012771Sqtt2@cornell.eduRVTEST_CODE_END 7112771Sqtt2@cornell.edu 7212771Sqtt2@cornell.edu .data 7312771Sqtt2@cornell.eduRVTEST_DATA_BEGIN 7412771Sqtt2@cornell.edu 7512771Sqtt2@cornell.edu TEST_DATA 7612771Sqtt2@cornell.edu 7712771Sqtt2@cornell.eduRVTEST_DATA_END 78