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runtime: add comment for sys_linux_loong64

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Change-Id: I617d6d788cb213c1405f81d9f689fd6846ee105a
Reviewed-on: https://go-review.googlesource.com/c/go/+/425300
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
This commit is contained in:
Guoqi Chen 2022-08-26 14:19:06 +08:00 committed by Ben Shi
parent 5fa65d8c93
commit 541ef422e2
1 changed files with 29 additions and 2 deletions
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31
src/runtime/sys_linux_loong64.s
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@ -44,6 +44,7 @@
#define SYS_timer_settime 110
#define SYS_timer_delete 111
// func exit(code int32)
TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0-4
MOVW code+0(FP), R4
MOVV $SYS_exit_group, R11
@ -63,6 +64,7 @@ TEXT runtime·exitThread(SB),NOSPLIT|NOFRAME,$0-8
SYSCALL
JMP 0(PC)
// func open(name *byte, mode, perm int32) int32
TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0-20
MOVW $AT_FDCWD, R4 // AT_FDCWD, so this acts like open
MOVV name+0(FP), R5
@ -76,6 +78,7 @@ TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0-20
MOVW R4, ret+16(FP)
RET
// func closefd(fd int32) int32
TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0-12
MOVW fd+0(FP), R4
MOVV $SYS_close, R11
@ -86,6 +89,7 @@ TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0-12
MOVW R4, ret+8(FP)
RET
// func write1(fd uintptr, p unsafe.Pointer, n int32) int32
TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0-28
MOVV fd+0(FP), R4
MOVV p+8(FP), R5
@ -95,6 +99,7 @@ TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0-28
MOVW R4, ret+24(FP)
RET
// func read(fd int32, p unsafe.Pointer, n int32) int32
TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0-28
MOVW fd+0(FP), R4
MOVV p+8(FP), R5
@ -113,6 +118,7 @@ TEXT runtime·pipe2(SB),NOSPLIT|NOFRAME,$0-20
MOVW R4, errno+16(FP)
RET
// func usleep(usec uint32)
TEXT runtime·usleep(SB),NOSPLIT,$16-4
MOVWU usec+0(FP), R6
MOVV R6, R5
@ -131,12 +137,14 @@ TEXT runtime·usleep(SB),NOSPLIT,$16-4
SYSCALL
RET
// func gettid() uint32
TEXT runtime·gettid(SB),NOSPLIT,$0-4
MOVV $SYS_gettid, R11
SYSCALL
MOVW R4, ret+0(FP)
RET
// func raise(sig uint32)
TEXT runtime·raise(SB),NOSPLIT|NOFRAME,$0
MOVV $SYS_getpid, R11
SYSCALL
@ -150,6 +158,7 @@ TEXT runtime·raise(SB),NOSPLIT|NOFRAME,$0
SYSCALL
RET
// func raiseproc(sig uint32)
TEXT runtime·raiseproc(SB),NOSPLIT|NOFRAME,$0
MOVV $SYS_getpid, R11
SYSCALL
@ -159,12 +168,14 @@ TEXT runtime·raiseproc(SB),NOSPLIT|NOFRAME,$0
SYSCALL
RET
// func getpid() int
TEXT ·getpid(SB),NOSPLIT|NOFRAME,$0-8
MOVV $SYS_getpid, R11
SYSCALL
MOVV R4, ret+0(FP)
RET
// func tgkill(tgid, tid, sig int)
TEXT ·tgkill(SB),NOSPLIT|NOFRAME,$0-24
MOVV tgid+0(FP), R4
MOVV tid+8(FP), R5
@ -173,6 +184,7 @@ TEXT ·tgkill(SB),NOSPLIT|NOFRAME,$0-24
SYSCALL
RET
// func setitimer(mode int32, new, old *itimerval)
TEXT runtime·setitimer(SB),NOSPLIT|NOFRAME,$0-24
MOVW mode+0(FP), R4
MOVV new+8(FP), R5
@ -181,6 +193,7 @@ TEXT runtime·setitimer(SB),NOSPLIT|NOFRAME,$0-24
SYSCALL
RET
// func timer_create(clockid int32, sevp *sigevent, timerid *int32) int32
TEXT runtime·timer_create(SB),NOSPLIT,$0-28
MOVW clockid+0(FP), R4
MOVV sevp+8(FP), R5
@ -190,6 +203,7 @@ TEXT runtime·timer_create(SB),NOSPLIT,$0-28
MOVW R4, ret+24(FP)
RET
// func timer_settime(timerid int32, flags int32, new, old *itimerspec) int32
TEXT runtime·timer_settime(SB),NOSPLIT,$0-28
MOVW timerid+0(FP), R4
MOVW flags+4(FP), R5
@ -200,6 +214,7 @@ TEXT runtime·timer_settime(SB),NOSPLIT,$0-28
MOVW R4, ret+24(FP)
RET
// func timer_delete(timerid int32) int32
TEXT runtime·timer_delete(SB),NOSPLIT,$0-12
MOVW timerid+0(FP), R4
MOVV $SYS_timer_delete, R11
@ -207,6 +222,7 @@ TEXT runtime·timer_delete(SB),NOSPLIT,$0-12
MOVW R4, ret+8(FP)
RET
// func mincore(addr unsafe.Pointer, n uintptr, dst *byte) int32
TEXT runtime·mincore(SB),NOSPLIT|NOFRAME,$0-28
MOVV addr+0(FP), R4
MOVV n+8(FP), R5
@ -279,6 +295,7 @@ fallback:
SYSCALL
JMP finish
// func nanotime1() int64
TEXT runtime·nanotime1(SB),NOSPLIT,$16-8
MOVV R3, R23 // R23 is unchanged by C code
MOVV R3, R25
@ -345,6 +362,7 @@ fallback:
SYSCALL
JMP finish
// func rtsigprocmask(how int32, new, old *sigset, size int32)
TEXT runtime·rtsigprocmask(SB),NOSPLIT|NOFRAME,$0-28
MOVW how+0(FP), R4
MOVV new+8(FP), R5
@ -357,6 +375,7 @@ TEXT runtime·rtsigprocmask(SB),NOSPLIT|NOFRAME,$0-28
MOVV R0, 0xf1(R0) // crash
RET
// func rt_sigaction(sig uintptr, new, old *sigactiont, size uintptr) int32
TEXT runtime·rt_sigaction(SB),NOSPLIT|NOFRAME,$0-36
MOVV sig+0(FP), R4
MOVV new+8(FP), R5
@ -367,6 +386,7 @@ TEXT runtime·rt_sigaction(SB),NOSPLIT|NOFRAME,$0-36
MOVW R4, ret+32(FP)
RET
// func sigfwd(fn uintptr, sig uint32, info *siginfo, ctx unsafe.Pointer)
TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
MOVW sig+8(FP), R4
MOVV info+16(FP), R5
@ -375,6 +395,7 @@ TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
JAL (R20)
RET
// func sigtramp(signo, ureg, ctxt unsafe.Pointer)
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$168
MOVW R4, (1*8)(R3)
MOVV R5, (2*8)(R3)
@ -400,9 +421,11 @@ TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$168
RET
// func cgoSigtramp()
TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0
JMP runtime·sigtramp(SB)
// func mmap(addr unsafe.Pointer, n uintptr, prot, flags, fd int32, off uint32) (p unsafe.Pointer, err int)
TEXT runtime·mmap(SB),NOSPLIT|NOFRAME,$0
MOVV addr+0(FP), R4
MOVV n+8(FP), R5
@ -424,6 +447,7 @@ ok:
MOVV $0, err+40(FP)
RET
// func munmap(addr unsafe.Pointer, n uintptr)
TEXT runtime·munmap(SB),NOSPLIT|NOFRAME,$0
MOVV addr+0(FP), R4
MOVV n+8(FP), R5
@ -434,6 +458,7 @@ TEXT runtime·munmap(SB),NOSPLIT|NOFRAME,$0
MOVV R0, 0xf3(R0) // crash
RET
// func madvise(addr unsafe.Pointer, n uintptr, flags int32)
TEXT runtime·madvise(SB),NOSPLIT|NOFRAME,$0
MOVV addr+0(FP), R4
MOVV n+8(FP), R5
@ -443,8 +468,7 @@ TEXT runtime·madvise(SB),NOSPLIT|NOFRAME,$0
MOVW R4, ret+24(FP)
RET
// int64 futex(int32 *uaddr, int32 op, int32 val,
// struct timespec *timeout, int32 *uaddr2, int32 val2);
// func futex(addr unsafe.Pointer, op int32, val uint32, ts, addr2 unsafe.Pointer, val3 uint32) int32
TEXT runtime·futex(SB),NOSPLIT|NOFRAME,$0
MOVV addr+0(FP), R4
MOVW op+8(FP), R5
@ -518,6 +542,7 @@ nog:
SYSCALL
JMP -3(PC) // keep exiting
// func sigaltstack(new, old *stackt)
TEXT runtime·sigaltstack(SB),NOSPLIT|NOFRAME,$0
MOVV new+0(FP), R4
MOVV old+8(FP), R5
@ -528,11 +553,13 @@ TEXT runtime·sigaltstack(SB),NOSPLIT|NOFRAME,$0
MOVV R0, 0xf1(R0) // crash
RET
// func osyield()
TEXT runtime·osyield(SB),NOSPLIT|NOFRAME,$0
MOVV $SYS_sched_yield, R11
SYSCALL
RET
// func sched_getaffinity(pid, len uintptr, buf *uintptr) int32
TEXT runtime·sched_getaffinity(SB),NOSPLIT|NOFRAME,$0
MOVV pid+0(FP), R4
MOVV len+8(FP), R5