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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/12/29 16:02:01 UTC
[GitHub] [incubator-nuttx] no1wudi opened a new pull request #5115: arch/risc-v: Refine syscall interface
no1wudi opened a new pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115
## Summary
## Impact
Refactor only.
## Testing
CI and rv32-virt:ostest
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[GitHub] [incubator-nuttx] xiaoxiang781216 merged pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 merged pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115
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[GitHub] [incubator-nuttx] no1wudi commented on a change in pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi commented on a change in pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#discussion_r776542692
##########
File path: arch/risc-v/src/rv32m1/Make.defs
##########
@@ -23,7 +23,7 @@
HEAD_ASRC = rv32m1_vectors.S
# Specify our general Assembly files
-CHIP_ASRCS = rv32m1_head.S riscv_syscall.S
Review comment:
sys_call[x] series function on rv32im implemented in riscv_syscall.S, but in rv64gc they are inline functions in syscall.h
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[GitHub] [incubator-nuttx] no1wudi removed a comment on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi removed a comment on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002954211
@masayuki2009 @xiaoxiang781216
Hi, I find that this crash is caused by RISC-V's C extension , in riscv_syscall.S:
```
sys_call0: /* a0 holds the syscall number */
sys_call1: /* a0 holds the syscall number, argument in a1 */
sys_call2: /* a0 holds the syscall number, arguments in a1 and a2 */
sys_call3: /* a0 holds the syscall number, arguments in a1, a2, and a3 */
sys_call4: /* a0 holds the syscall number, arguments in a1, a2, a3 and a4 */
sys_call5: /* a0 holds the syscall number, arguments in a1, a2, a3, a4 and a5 */
/* Issue the ECALL opcode to perform a SW interrupt to the OS */
ecall
/* The actual interrupt may not a occur for a few more cycles. Let's
* put a few nop's here in hope that the SW interrupt occurs during
* the sequence of nops.
*/
nop
nop
/* Then return with the result of the software interrupt in v0 */
ret
nop
```
All instruction use the normal 32bit instruction, but on some platform with C (Compressed instruction) support it would be 16bit, for FE310, you can adjust the mepc with 2 instead of 4:
```
void *fe310_dispatch_irq(uint32_t vector, uint32_t *regs)
{
uint32_t irq = (vector >> 27) | (vector & 0xf);
uint32_t *mepc = regs;
/* Firstly, check if the irq is machine external interrupt */
if (FE310_IRQ_MEXT == irq)
{
uint32_t val = getreg32(FE310_PLIC_CLAIM);
/* Add the value to nuttx irq which is offset to the mext */
irq += val;
}
/* NOTE: In case of ecall, we need to adjust mepc in the context */
if (FE310_IRQ_ECALLM == irq)
{
/* It should be 2 instead of 4 on target with C extension */
*mepc += 4;
}
...
}
```
@masayuki2009 Could you please have test ?
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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on a change in pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 commented on a change in pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#discussion_r776401369
##########
File path: arch/risc-v/include/common/syscall.h
##########
@@ -1,5 +1,5 @@
/****************************************************************************
- * arch/risc-v/include/rv64gc/syscall.h
+ * arch/risc-v/include/common/syscall.h
Review comment:
let's move to the up level instead common folder.
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[GitHub] [incubator-nuttx] no1wudi edited a comment on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi edited a comment on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002954211
@masayuki2009 @xiaoxiang781216
Hi, I find that this crash is caused by RISC-V's C extension , in riscv_syscall.S:
```
sys_call0: /* a0 holds the syscall number */
sys_call1: /* a0 holds the syscall number, argument in a1 */
sys_call2: /* a0 holds the syscall number, arguments in a1 and a2 */
sys_call3: /* a0 holds the syscall number, arguments in a1, a2, and a3 */
sys_call4: /* a0 holds the syscall number, arguments in a1, a2, a3 and a4 */
sys_call5: /* a0 holds the syscall number, arguments in a1, a2, a3, a4 and a5 */
/* Issue the ECALL opcode to perform a SW interrupt to the OS */
ecall
/* The actual interrupt may not a occur for a few more cycles. Let's
* put a few nop's here in hope that the SW interrupt occurs during
* the sequence of nops.
*/
nop
nop
/* Then return with the result of the software interrupt in v0 */
ret
nop
```
All instruction use the normal 32bit instruction, but on some platform with C (Compressed instruction) support it would be 16bit, for FE310, you can adjust the mepc with 2 instead of 4:
```
void *fe310_dispatch_irq(uint32_t vector, uint32_t *regs)
{
uint32_t irq = (vector >> 27) | (vector & 0xf);
uint32_t *mepc = regs;
/* Firstly, check if the irq is machine external interrupt */
if (FE310_IRQ_MEXT == irq)
{
uint32_t val = getreg32(FE310_PLIC_CLAIM);
/* Add the value to nuttx irq which is offset to the mext */
irq += val;
}
/* NOTE: In case of ecall, we need to adjust mepc in the context */
if (FE310_IRQ_ECALLM == irq)
{
/* It should be 2 instead of 4 on target with C extension */
*mepc += 4;
}
...
}
```
@masayuki2009 Could you please have test ?
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[GitHub] [incubator-nuttx] no1wudi commented on a change in pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi commented on a change in pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#discussion_r776542539
##########
File path: arch/risc-v/include/common/syscall.h
##########
@@ -1,5 +1,5 @@
/****************************************************************************
- * arch/risc-v/include/rv64gc/syscall.h
+ * arch/risc-v/include/common/syscall.h
Review comment:
Done
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[GitHub] [incubator-nuttx] masayuki2009 commented on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
masayuki2009 commented on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002906719
@no1wudi
Hmm, hifive1-revb:nsh with QEMU crashes with this PR.
```
NuttShell (NSH) NuttX-10.2.0
nsh> up_assert: Assertion failed at file:irq/irq_unexpectedisr.c line: 51 task: Idle Task
riscv_registerdump: EPC:20403580
riscv_registerdump: A0:00000002 A1:80000700 A2:800015c8 A3:80000818 A4:80001558 A5:00000014 A6:00000002 A7:00000003
riscv_registerdump: T0:20400004 T1:00000000 T2:00000000 T3:00000000 T4:00000000 T5:00000000 T6:00000000
riscv_registerdump: S0:80001558 S1:80000700 S2:80000000 S3:800007bc S4:80001000 S5:00000001 S6:00000000 S7:00000000
riscv_registerdump: S8:00000000 S9:00000000 S10:00000000 S11:00000000
riscv_registerdump: SP:80001030 FP:80001558 TP:00000000 RA:20403566
riscv_dumpstate: sp: 800005c0
riscv_dumpstate: IRQ stack:
riscv_dumpstate: base: 80000060
riscv_dumpstate: size: 00000600
riscv_stackdump: 800005c0: 00000001 00000000 00000000 deadbeef deadbeef deadbeef 00000033 2040bc14
riscv_stackdump: 800005e0: deadbeef deadbeef 00000000 00000000 00000000 00000001 80001000 800007bc
riscv_stackdump: 80000600: 80000000 80000000 00000005 2040287c deadbeef deadbeef deadbeef 20400bb2
riscv_stackdump: 80000620: deadbeef 80000000 0000000b 20400b76 deadbeef deadbeef deadbeef 2040011a
riscv_stackdump: 80000640: deadbeef deadbeef deadbeef 80000fac deadbeef 80000700 20403580 2040008a
riscv_dumpstate: sp: 80000660
riscv_dumpstate: User stack:
riscv_dumpstate: base: 80000ac0
riscv_dumpstate: size: 000005e0
riscv_dumpstate: ERROR: Stack pointer is not within allocated stack
riscv_stackdump: 80000ac0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ae0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ba0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000bc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000be0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ca0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000cc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ce0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000da0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000dc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000de0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ea0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ec0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ee0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000f00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000f20: deadbeef 800007c8 fffffffc 20405f3a deadbeef 00000000 800007c8 20404c20
riscv_stackdump: 80000f40: deadbeef 80001508 80000000 204020c8 00000001 00000000 00000000 80001758
riscv_stackdump: 80000f60: 80001478 80001508 00000000 20404f4c 00000003 00000000 80001478 00000000
riscv_stackdump: 80000f80: 00000001 800011b8 fffffffc 80001508 00000003 00000000 80000690 204013d0
riscv_stackdump: 80000fa0: 00000000 00000006 8000159c 20403580 20403566 80001030 00000000 00000000
riscv_stackdump: 80000fc0: 20400004 00000000 00000000 80001558 80000700 00000002 80000700 800015c8
riscv_stackdump: 80000fe0: 80000818 80001558 00000014 00000002 00000003 80000000 800007bc 80001000
riscv_stackdump: 80001000: 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
riscv_stackdump: 80001020: 00000000 00000000 00000000 00001800 80000000 80000700 80001558 20403566
riscv_stackdump: 80001040: 800007f8 00000008 80000690 20400c5c 80000690 80001000 80000000 20400ace
riscv_stackdump: 80001060: 00000000 00000000 800010a0 00002f60 00000000 00000000 00000000 00000000
riscv_stackdump: 80001080: 00000000 00000000 00000000 20400188 00000000 00000000 00000000 20400026
riscv_showtasks: PID PRI USED STACK FILLED COMMAND
riscv_showtasks: ---- ---- 496 1536 32.2% irq
riscv_dump_task: 0 0 380 1504 25.2% Idle Task
riscv_dump_task: 1 100 612 1496 40.9% nsh_main
```
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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on a change in pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 commented on a change in pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#discussion_r776404189
##########
File path: arch/risc-v/src/rv32m1/Make.defs
##########
@@ -23,7 +23,7 @@
HEAD_ASRC = rv32m1_vectors.S
# Specify our general Assembly files
-CHIP_ASRCS = rv32m1_head.S riscv_syscall.S
Review comment:
why remove?
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[GitHub] [incubator-nuttx] masayuki2009 edited a comment on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
masayuki2009 edited a comment on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002906719
@no1wudi
Hmm, hifive1-revb:nsh with QEMU crashes with this PR.
Could you please take a look at what is happening with this PR?
```
NuttShell (NSH) NuttX-10.2.0
nsh> up_assert: Assertion failed at file:irq/irq_unexpectedisr.c line: 51 task: Idle Task
riscv_registerdump: EPC:20403580
riscv_registerdump: A0:00000002 A1:80000700 A2:800015c8 A3:80000818 A4:80001558 A5:00000014 A6:00000002 A7:00000003
riscv_registerdump: T0:20400004 T1:00000000 T2:00000000 T3:00000000 T4:00000000 T5:00000000 T6:00000000
riscv_registerdump: S0:80001558 S1:80000700 S2:80000000 S3:800007bc S4:80001000 S5:00000001 S6:00000000 S7:00000000
riscv_registerdump: S8:00000000 S9:00000000 S10:00000000 S11:00000000
riscv_registerdump: SP:80001030 FP:80001558 TP:00000000 RA:20403566
riscv_dumpstate: sp: 800005c0
riscv_dumpstate: IRQ stack:
riscv_dumpstate: base: 80000060
riscv_dumpstate: size: 00000600
riscv_stackdump: 800005c0: 00000001 00000000 00000000 deadbeef deadbeef deadbeef 00000033 2040bc14
riscv_stackdump: 800005e0: deadbeef deadbeef 00000000 00000000 00000000 00000001 80001000 800007bc
riscv_stackdump: 80000600: 80000000 80000000 00000005 2040287c deadbeef deadbeef deadbeef 20400bb2
riscv_stackdump: 80000620: deadbeef 80000000 0000000b 20400b76 deadbeef deadbeef deadbeef 2040011a
riscv_stackdump: 80000640: deadbeef deadbeef deadbeef 80000fac deadbeef 80000700 20403580 2040008a
riscv_dumpstate: sp: 80000660
riscv_dumpstate: User stack:
riscv_dumpstate: base: 80000ac0
riscv_dumpstate: size: 000005e0
riscv_dumpstate: ERROR: Stack pointer is not within allocated stack
riscv_stackdump: 80000ac0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ae0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000b80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ba0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000bc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000be0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000c80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ca0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000cc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ce0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000d80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000da0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000dc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000de0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000e80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ea0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ec0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000ee0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000f00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
riscv_stackdump: 80000f20: deadbeef 800007c8 fffffffc 20405f3a deadbeef 00000000 800007c8 20404c20
riscv_stackdump: 80000f40: deadbeef 80001508 80000000 204020c8 00000001 00000000 00000000 80001758
riscv_stackdump: 80000f60: 80001478 80001508 00000000 20404f4c 00000003 00000000 80001478 00000000
riscv_stackdump: 80000f80: 00000001 800011b8 fffffffc 80001508 00000003 00000000 80000690 204013d0
riscv_stackdump: 80000fa0: 00000000 00000006 8000159c 20403580 20403566 80001030 00000000 00000000
riscv_stackdump: 80000fc0: 20400004 00000000 00000000 80001558 80000700 00000002 80000700 800015c8
riscv_stackdump: 80000fe0: 80000818 80001558 00000014 00000002 00000003 80000000 800007bc 80001000
riscv_stackdump: 80001000: 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
riscv_stackdump: 80001020: 00000000 00000000 00000000 00001800 80000000 80000700 80001558 20403566
riscv_stackdump: 80001040: 800007f8 00000008 80000690 20400c5c 80000690 80001000 80000000 20400ace
riscv_stackdump: 80001060: 00000000 00000000 800010a0 00002f60 00000000 00000000 00000000 00000000
riscv_stackdump: 80001080: 00000000 00000000 00000000 20400188 00000000 00000000 00000000 20400026
riscv_showtasks: PID PRI USED STACK FILLED COMMAND
riscv_showtasks: ---- ---- 496 1536 32.2% irq
riscv_dump_task: 0 0 380 1504 25.2% Idle Task
riscv_dump_task: 1 100 612 1496 40.9% nsh_main
```
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[GitHub] [incubator-nuttx] no1wudi commented on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi commented on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002961796
@masayuki2009 Please take a look : #5123
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[GitHub] [incubator-nuttx] no1wudi commented on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi commented on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002914334
> @no1wudi
>
> Hmm, hifive1-revb:nsh with QEMU crashes with this PR. Could you please take a look at what is happening with this PR?
>
> ```
> NuttShell (NSH) NuttX-10.2.0
> nsh> up_assert: Assertion failed at file:irq/irq_unexpectedisr.c line: 51 task: Idle Task
> riscv_registerdump: EPC:20403580
> riscv_registerdump: A0:00000002 A1:80000700 A2:800015c8 A3:80000818 A4:80001558 A5:00000014 A6:00000002 A7:00000003
> riscv_registerdump: T0:20400004 T1:00000000 T2:00000000 T3:00000000 T4:00000000 T5:00000000 T6:00000000
> riscv_registerdump: S0:80001558 S1:80000700 S2:80000000 S3:800007bc S4:80001000 S5:00000001 S6:00000000 S7:00000000
> riscv_registerdump: S8:00000000 S9:00000000 S10:00000000 S11:00000000
> riscv_registerdump: SP:80001030 FP:80001558 TP:00000000 RA:20403566
> riscv_dumpstate: sp: 800005c0
> riscv_dumpstate: IRQ stack:
> riscv_dumpstate: base: 80000060
> riscv_dumpstate: size: 00000600
> riscv_stackdump: 800005c0: 00000001 00000000 00000000 deadbeef deadbeef deadbeef 00000033 2040bc14
> riscv_stackdump: 800005e0: deadbeef deadbeef 00000000 00000000 00000000 00000001 80001000 800007bc
> riscv_stackdump: 80000600: 80000000 80000000 00000005 2040287c deadbeef deadbeef deadbeef 20400bb2
> riscv_stackdump: 80000620: deadbeef 80000000 0000000b 20400b76 deadbeef deadbeef deadbeef 2040011a
> riscv_stackdump: 80000640: deadbeef deadbeef deadbeef 80000fac deadbeef 80000700 20403580 2040008a
> riscv_dumpstate: sp: 80000660
> riscv_dumpstate: User stack:
> riscv_dumpstate: base: 80000ac0
> riscv_dumpstate: size: 000005e0
> riscv_dumpstate: ERROR: Stack pointer is not within allocated stack
> riscv_stackdump: 80000ac0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ae0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ba0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000bc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000be0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ca0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000cc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ce0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000da0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000dc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000de0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ea0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ec0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ee0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000f00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000f20: deadbeef 800007c8 fffffffc 20405f3a deadbeef 00000000 800007c8 20404c20
> riscv_stackdump: 80000f40: deadbeef 80001508 80000000 204020c8 00000001 00000000 00000000 80001758
> riscv_stackdump: 80000f60: 80001478 80001508 00000000 20404f4c 00000003 00000000 80001478 00000000
> riscv_stackdump: 80000f80: 00000001 800011b8 fffffffc 80001508 00000003 00000000 80000690 204013d0
> riscv_stackdump: 80000fa0: 00000000 00000006 8000159c 20403580 20403566 80001030 00000000 00000000
> riscv_stackdump: 80000fc0: 20400004 00000000 00000000 80001558 80000700 00000002 80000700 800015c8
> riscv_stackdump: 80000fe0: 80000818 80001558 00000014 00000002 00000003 80000000 800007bc 80001000
> riscv_stackdump: 80001000: 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> riscv_stackdump: 80001020: 00000000 00000000 00000000 00001800 80000000 80000700 80001558 20403566
> riscv_stackdump: 80001040: 800007f8 00000008 80000690 20400c5c 80000690 80001000 80000000 20400ace
> riscv_stackdump: 80001060: 00000000 00000000 800010a0 00002f60 00000000 00000000 00000000 00000000
> riscv_stackdump: 80001080: 00000000 00000000 00000000 20400188 00000000 00000000 00000000 20400026
> riscv_showtasks: PID PRI USED STACK FILLED COMMAND
> riscv_showtasks: ---- ---- 496 1536 32.2% irq
> riscv_dump_task: 0 0 380 1504 25.2% Idle Task
> riscv_dump_task: 1 100 612 1496 40.9% nsh_main
> ```
Get it, let me have a check
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[GitHub] [incubator-nuttx] no1wudi removed a comment on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi removed a comment on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002914334
> @no1wudi
>
> Hmm, hifive1-revb:nsh with QEMU crashes with this PR. Could you please take a look at what is happening with this PR?
>
> ```
> NuttShell (NSH) NuttX-10.2.0
> nsh> up_assert: Assertion failed at file:irq/irq_unexpectedisr.c line: 51 task: Idle Task
> riscv_registerdump: EPC:20403580
> riscv_registerdump: A0:00000002 A1:80000700 A2:800015c8 A3:80000818 A4:80001558 A5:00000014 A6:00000002 A7:00000003
> riscv_registerdump: T0:20400004 T1:00000000 T2:00000000 T3:00000000 T4:00000000 T5:00000000 T6:00000000
> riscv_registerdump: S0:80001558 S1:80000700 S2:80000000 S3:800007bc S4:80001000 S5:00000001 S6:00000000 S7:00000000
> riscv_registerdump: S8:00000000 S9:00000000 S10:00000000 S11:00000000
> riscv_registerdump: SP:80001030 FP:80001558 TP:00000000 RA:20403566
> riscv_dumpstate: sp: 800005c0
> riscv_dumpstate: IRQ stack:
> riscv_dumpstate: base: 80000060
> riscv_dumpstate: size: 00000600
> riscv_stackdump: 800005c0: 00000001 00000000 00000000 deadbeef deadbeef deadbeef 00000033 2040bc14
> riscv_stackdump: 800005e0: deadbeef deadbeef 00000000 00000000 00000000 00000001 80001000 800007bc
> riscv_stackdump: 80000600: 80000000 80000000 00000005 2040287c deadbeef deadbeef deadbeef 20400bb2
> riscv_stackdump: 80000620: deadbeef 80000000 0000000b 20400b76 deadbeef deadbeef deadbeef 2040011a
> riscv_stackdump: 80000640: deadbeef deadbeef deadbeef 80000fac deadbeef 80000700 20403580 2040008a
> riscv_dumpstate: sp: 80000660
> riscv_dumpstate: User stack:
> riscv_dumpstate: base: 80000ac0
> riscv_dumpstate: size: 000005e0
> riscv_dumpstate: ERROR: Stack pointer is not within allocated stack
> riscv_stackdump: 80000ac0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ae0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000b80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ba0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000bc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000be0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000c80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ca0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000cc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ce0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000d80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000da0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000dc0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000de0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e20: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e40: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000e80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ea0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ec0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000ee0: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000f00: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
> riscv_stackdump: 80000f20: deadbeef 800007c8 fffffffc 20405f3a deadbeef 00000000 800007c8 20404c20
> riscv_stackdump: 80000f40: deadbeef 80001508 80000000 204020c8 00000001 00000000 00000000 80001758
> riscv_stackdump: 80000f60: 80001478 80001508 00000000 20404f4c 00000003 00000000 80001478 00000000
> riscv_stackdump: 80000f80: 00000001 800011b8 fffffffc 80001508 00000003 00000000 80000690 204013d0
> riscv_stackdump: 80000fa0: 00000000 00000006 8000159c 20403580 20403566 80001030 00000000 00000000
> riscv_stackdump: 80000fc0: 20400004 00000000 00000000 80001558 80000700 00000002 80000700 800015c8
> riscv_stackdump: 80000fe0: 80000818 80001558 00000014 00000002 00000003 80000000 800007bc 80001000
> riscv_stackdump: 80001000: 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> riscv_stackdump: 80001020: 00000000 00000000 00000000 00001800 80000000 80000700 80001558 20403566
> riscv_stackdump: 80001040: 800007f8 00000008 80000690 20400c5c 80000690 80001000 80000000 20400ace
> riscv_stackdump: 80001060: 00000000 00000000 800010a0 00002f60 00000000 00000000 00000000 00000000
> riscv_stackdump: 80001080: 00000000 00000000 00000000 20400188 00000000 00000000 00000000 20400026
> riscv_showtasks: PID PRI USED STACK FILLED COMMAND
> riscv_showtasks: ---- ---- 496 1536 32.2% irq
> riscv_dump_task: 0 0 380 1504 25.2% Idle Task
> riscv_dump_task: 1 100 612 1496 40.9% nsh_main
> ```
Get it, let me have a check
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[GitHub] [incubator-nuttx] no1wudi commented on pull request #5115: arch/risc-v: Refine syscall interface
Posted by GitBox <gi...@apache.org>.
no1wudi commented on pull request #5115:
URL: https://github.com/apache/incubator-nuttx/pull/5115#issuecomment-1002954211
@masayuki2009 @xiaoxiang781216
Hi, I find that this crash is caused by RISC-V's C extension , in riscv_syscall.S:
```
sys_call0: /* a0 holds the syscall number */
sys_call1: /* a0 holds the syscall number, argument in a1 */
sys_call2: /* a0 holds the syscall number, arguments in a1 and a2 */
sys_call3: /* a0 holds the syscall number, arguments in a1, a2, and a3 */
sys_call4: /* a0 holds the syscall number, arguments in a1, a2, a3 and a4 */
sys_call5: /* a0 holds the syscall number, arguments in a1, a2, a3, a4 and a5 */
/* Issue the ECALL opcode to perform a SW interrupt to the OS */
ecall
/* The actual interrupt may not a occur for a few more cycles. Let's
* put a few nop's here in hope that the SW interrupt occurs during
* the sequence of nops.
*/
nop
nop
/* Then return with the result of the software interrupt in v0 */
ret
nop
```
All instruction use the normal 32bit instruction, but on some platform with C (Compressed instruction) support it would be 16bit, for FE310, you can adjust the mepc with 2 instead of 4:
```
void *fe310_dispatch_irq(uint32_t vector, uint32_t *regs)
{
uint32_t irq = (vector >> 27) | (vector & 0xf);
uint32_t *mepc = regs;
/* Firstly, check if the irq is machine external interrupt */
if (FE310_IRQ_MEXT == irq)
{
uint32_t val = getreg32(FE310_PLIC_CLAIM);
/* Add the value to nuttx irq which is offset to the mext */
irq += val;
}
/* NOTE: In case of ecall, we need to adjust mepc in the context */
if (FE310_IRQ_ECALLM == irq)
{
/* It should be 2 instead of 4 on target with C extension */
*mepc += 4;
}
...
}
```
@masayuki2009 Could you please have test ?
I intend to use hand write assembly file like the file removed in this PR to get explicit size instead of depend on the behavior of compiler, how about this idea ? @xiaoxiang781216 @masayuki2009
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