[GitHub] [incubator-nuttx] masayuki2009 commented on pull request #5731: arch/risc-v: Improve speed of context switch

[GitBox <gi...@apache.org>]

masayuki2009 commented on pull request #5731:
URL: https://github.com/apache/incubator-nuttx/pull/5731#issuecomment-1066240709


   @no1wudi 
   
   I tried this PR with maix-bit:kostest on QEMU but the ASSERTION happened.
   
   ```
   $ ~/opensource/QEMU/qemu-5.2/build/riscv64-softmmu/qemu-system-riscv64 -nographic -machine sifive_u -device loader,file=nuttx.bin,addr=0x80000000 -device loader,file=nuttx_user.bin,addr=0x80100000
   ABCDstdio_test: write fd=1
   stdio_test: Standard I/O Check: printf
   stdio_test: write fd=2
   stdio_test: Standard I/O Check: fprintf to stderr
   ostest_main: putenv(Variable1=BadValue3)
   ostest_main: setenv(Variable1, GoodValue1, TRUE)
   ostest_main: setenv(Variable2, BadValue1, FALSE)
   ostest_main: setenv(Variable2, GoodValue2, TRUE)
   ostest_main: setenv(Variable3, Variable3, FALSE)
   ostest_main: setenv(Variable3, Variable3, FALSE)
   show_variable: Variable=Variable1 has value=GoodValue1
   show_variable: Variable=Variable2 has value=GoodValue2
   show_variable: Variable=Variable3 has value=GoodValue3
   ostest_main: Started user_main at PID=2
   ...
   user_main: waitpid test
   
   Test waitpid()
   waitpid_start_child: Started waitpid_main at PID=7
   waitpid_start_child: Started waitpid_main at PID=11
   waitpid_main: PID 7 Started
   waitpid_main: PID 11 Started
   waitpid_main: PID 12 Started
   up_assert: Assertion failed at file:stdio/lib_libfilesem.c line: 106 task: ostest
   riscv_registerdump: EPC: 00000000800062be
   riscv_registerdump: A0: 0000000000000000 A1: 0000000080404960 A2: 000000000000003f A3: 0000000000000002
   riscv_registerdump: A4: 0000000010010000 A5: 0000000080404960 A6: 000000000000006c A7: 0000000000000068
   riscv_registerdump: T0: 0000000000000030 T1: 0000000000000009 T2: 0000000000000020 T3: 000000000000002a
   riscv_registerdump: T4: 000000000000002e T5: 00000000000001ff T6: 000000000000002d
   riscv_registerdump: S0: 00000000800008fe S1: 0000000080404908 S2: 0000000080481930 S3: 0000000080401188
   riscv_registerdump: S4: 0000000080102502 S5: 000000008010a210 S6: 0000000080404b48 S7: 000000008010a27b
   riscv_registerdump: S8: 0000000000000a00 S9: 0000000000001000 S10: 0000000000000800 S11: deadbeefdeadbeef
   riscv_registerdump: SP: 0000000080404908 FP: 00000000800008fe TP: deadbeefdeadbeef RA: 0000000080005fbe
   riscv_dumpstate: sp:     0000000080404908
   riscv_dumpstate: IRQ stack:
   riscv_dumpstate:   base: 00000000804000b0
   riscv_dumpstate:   size: 0000000000000800
   riscv_dumpstate: User stack:
   riscv_dumpstate:   base: 0000000080402df0
   riscv_dumpstate:   size: 0000000000001fb0
   riscv_dumpstate: ERROR: Stack pointer is not within allocated stack
   riscv_stackdump: 0000000080402de0: 67724100 72410033 00003467 00000000 deadbeef deadbeef deadbeef deadbeef
   riscv_stackdump: 0000000080402e00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
   riscv_stackdump: 0000000080402e20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
   
   ``
   


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