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added some comments to help debuggers in the future

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DTowersM 2022-06-10 01:44:52 +00:00
parent 9e2d80764d
commit 13c1cf12b2
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tests/wally-riscv-arch-test/riscv-test-suite/rv32i_m/privilege/src/WALLY-wfi-01.S
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@ -33,6 +33,8 @@ WRITE_READ_CSR mie, 0xFFF // Enable interrupts from all sources
// Code copied from test library to cause m time interrupt, with time loop replaced with wfi.
/* Note: the following line might cause problems in the future. If more than 0x50 cycles are needed before the wfi
instruction begins, then the program might fall into a loop and run forever*/
li x28, 0x50 // Desired offset from the present time
mv a3, x28 // copy value in to know to stop waiting for interrupt after this many cycles
la x29, 0x02004000 // MTIMECMP register in CLINT