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runtime: switch runtime to libc for openbsd/386
Use libc rather than performing direct system calls for the runtime on openbsd/386. Updates #36435 Change-Id: I0cd65368bc824c81f5f98ea24e4f82db5468b170 Reviewed-on: https://go-review.googlesource.com/c/go/+/287653 Trust: Joel Sing <joel@sing.id.au> Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Joel Sing
parent
0bbfc5c31e
commit
faff49aae6
5 changed files with 364 additions and 278 deletions
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@ -32,6 +32,11 @@ const (
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_PTHREAD_CREATE_DETACHED = 0x1
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_PTHREAD_CREATE_DETACHED = 0x1
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_F_SETFD = 0x2
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_F_GETFL = 0x3
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_F_SETFL = 0x4
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_FD_CLOEXEC = 0x1
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_SIGHUP = 0x1
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_SIGHUP = 0x1
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_SIGINT = 0x2
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_SIGINT = 0x2
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_SIGQUIT = 0x3
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_SIGQUIT = 0x3
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@ -2,8 +2,8 @@
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// Use of this source code is governed by a BSD-style
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// license that can be found in the LICENSE file.
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//go:build openbsd && !amd64 && !arm64
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//go:build openbsd && !386 && !amd64 && !arm64
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// +build openbsd,!amd64,!arm64
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// +build openbsd,!386,!amd64,!arm64
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package runtime
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package runtime
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@ -1303,7 +1303,7 @@ func usesLibcall() bool {
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case "aix", "darwin", "illumos", "ios", "solaris", "windows":
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case "aix", "darwin", "illumos", "ios", "solaris", "windows":
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return true
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return true
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case "openbsd":
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case "openbsd":
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return GOARCH == "amd64" || GOARCH == "arm64"
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return GOARCH == "386" || GOARCH == "amd64" || GOARCH == "arm64"
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}
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}
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return false
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return false
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}
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}
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@ -2,8 +2,8 @@
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// Use of this source code is governed by a BSD-style
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// license that can be found in the LICENSE file.
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//go:build (openbsd && amd64) || (openbsd && arm64)
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//go:build (openbsd && 386) || (openbsd && amd64) || (openbsd && arm64)
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// +build openbsd,amd64 openbsd,arm64
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// +build openbsd,386 openbsd,amd64 openbsd,arm64
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package runtime
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package runtime
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@ -169,6 +169,21 @@ TEXT runtime·pthread_create_trampoline(SB),NOSPLIT,$0
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POPL BP
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POPL BP
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RET
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RET
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TEXT runtime·thrkill_trampoline(SB),NOSPLIT,$0
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PUSHL BP
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MOVL SP, BP
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SUBL $12, SP
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MOVL 20(SP), DX // pointer to args
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MOVL 0(DX), AX
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MOVL 4(DX), BX
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MOVL AX, 0(SP) // arg 1 - tid
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MOVL BX, 4(SP) // arg 2 - signal
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MOVL $0, 8(SP) // arg 3 - tcb
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CALL libc_thrkill(SB)
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MOVL BP, SP
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POPL BP
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RET
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TEXT runtime·thrsleep_trampoline(SB),NOSPLIT,$0
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TEXT runtime·thrsleep_trampoline(SB),NOSPLIT,$0
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PUSHL BP
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PUSHL BP
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MOVL SP, BP
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MOVL SP, BP
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@ -203,6 +218,42 @@ TEXT runtime·thrwakeup_trampoline(SB),NOSPLIT,$0
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POPL BP
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POPL BP
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RET
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RET
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TEXT runtime·exit_trampoline(SB),NOSPLIT,$0
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PUSHL BP
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MOVL SP, BP
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SUBL $4, SP
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MOVL 12(SP), DX // pointer to args
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MOVL 0(DX), AX
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MOVL AX, 0(SP) // arg 1 - status
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CALL libc_exit(SB)
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MOVL $0xf1, 0xf1 // crash on failure
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MOVL BP, SP
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POPL BP
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RET
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TEXT runtime·getthrid_trampoline(SB),NOSPLIT,$0
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PUSHL BP
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CALL libc_getthrid(SB)
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NOP SP // tell vet SP changed - stop checking offsets
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MOVL 8(SP), DX // pointer to return value
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MOVL AX, 0(DX)
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POPL BP
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RET
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TEXT runtime·raiseproc_trampoline(SB),NOSPLIT,$0
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PUSHL BP
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MOVL SP, BP
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SUBL $8, SP
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MOVL 16(SP), DX
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MOVL 0(DX), BX
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CALL libc_getpid(SB)
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MOVL AX, 0(SP) // arg 1 - pid
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MOVL BX, 4(SP) // arg 2 - signal
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CALL libc_kill(SB)
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MOVL BP, SP
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POPL BP
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RET
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TEXT runtime·sched_yield_trampoline(SB),NOSPLIT,$0
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TEXT runtime·sched_yield_trampoline(SB),NOSPLIT,$0
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PUSHL BP
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PUSHL BP
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MOVL SP, BP
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MOVL SP, BP
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@ -211,308 +262,338 @@ TEXT runtime·sched_yield_trampoline(SB),NOSPLIT,$0
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POPL BP
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POPL BP
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RET
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RET
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// Exit the entire program (like C exit)
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TEXT runtime·mmap_trampoline(SB),NOSPLIT,$0
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TEXT runtime·exit(SB),NOSPLIT,$-4
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PUSHL BP
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MOVL $1, AX
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MOVL SP, BP
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INT $0x80
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SUBL $32, SP
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MOVL $0xf1, 0xf1 // crash
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MOVL 40(SP), DX // pointer to args
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RET
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MOVL 0(DX), AX
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MOVL 4(DX), BX
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// func exitThread(wait *uint32)
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MOVL 8(DX), CX
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TEXT runtime·exitThread(SB),NOSPLIT,$0-4
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MOVL AX, 0(SP) // arg 1 - addr
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MOVL $302, AX // sys___threxit
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MOVL BX, 4(SP) // arg 2 - len
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INT $0x80
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MOVL CX, 8(SP) // arg 3 - prot
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MOVL $0xf1, 0xf1 // crash
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MOVL 12(DX), AX
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JMP 0(PC)
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MOVL 16(DX), BX
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MOVL 20(DX), CX
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TEXT runtime·open(SB),NOSPLIT,$-4
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MOVL AX, 12(SP) // arg 4 - flags
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MOVL $5, AX
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MOVL BX, 16(SP) // arg 5 - fid
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INT $0x80
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MOVL $0, 20(SP) // pad
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JAE 2(PC)
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MOVL CX, 24(SP) // arg 6 - offset (low 32 bits)
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MOVL $-1, AX
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MOVL $0, 28(SP) // offset (high 32 bits)
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MOVL AX, ret+12(FP)
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CALL libc_mmap(SB)
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RET
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MOVL $0, BX
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CMPL AX, $-1
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TEXT runtime·closefd(SB),NOSPLIT,$-4
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JNE ok
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MOVL $6, AX
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CALL libc_errno(SB)
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INT $0x80
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MOVL (AX), BX
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JAE 2(PC)
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MOVL $-1, AX
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MOVL AX, ret+4(FP)
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RET
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TEXT runtime·read(SB),NOSPLIT,$-4
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MOVL $3, AX
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INT $0x80
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JAE 2(PC)
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NEGL AX // caller expects negative errno
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MOVL AX, ret+12(FP)
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RET
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// func pipe() (r, w int32, errno int32)
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TEXT runtime·pipe(SB),NOSPLIT,$8-12
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MOVL $263, AX
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LEAL r+0(FP), BX
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MOVL BX, 4(SP)
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INT $0x80
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MOVL AX, errno+8(FP)
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RET
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// func pipe2(flags int32) (r, w int32, errno int32)
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TEXT runtime·pipe2(SB),NOSPLIT,$12-16
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MOVL $101, AX
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LEAL r+4(FP), BX
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MOVL BX, 4(SP)
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MOVL flags+0(FP), BX
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MOVL BX, 8(SP)
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INT $0x80
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MOVL AX, errno+12(FP)
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RET
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TEXT runtime·write1(SB),NOSPLIT,$-4
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MOVL $4, AX // sys_write
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INT $0x80
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JAE 2(PC)
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NEGL AX // caller expects negative errno
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MOVL AX, ret+12(FP)
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RET
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TEXT runtime·usleep(SB),NOSPLIT,$24
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MOVL $0, DX
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MOVL usec+0(FP), AX
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MOVL $1000000, CX
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DIVL CX
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MOVL AX, 12(SP) // tv_sec - l32
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MOVL $0, 16(SP) // tv_sec - h32
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MOVL $1000, AX
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MULL DX
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MOVL AX, 20(SP) // tv_nsec
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MOVL $0, 0(SP)
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LEAL 12(SP), AX
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MOVL AX, 4(SP) // arg 1 - rqtp
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MOVL $0, 8(SP) // arg 2 - rmtp
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MOVL $91, AX // sys_nanosleep
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INT $0x80
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RET
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TEXT runtime·getthrid(SB),NOSPLIT,$0-4
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MOVL $299, AX // sys_getthrid
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INT $0x80
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MOVL AX, ret+0(FP)
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RET
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TEXT runtime·thrkill(SB),NOSPLIT,$16-8
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MOVL $0, 0(SP)
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MOVL tid+0(FP), AX
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MOVL AX, 4(SP) // arg 1 - tid
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MOVL sig+4(FP), AX
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MOVL AX, 8(SP) // arg 2 - signum
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MOVL $0, 12(SP) // arg 3 - tcb
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MOVL $119, AX // sys_thrkill
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INT $0x80
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RET
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TEXT runtime·raiseproc(SB),NOSPLIT,$12
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MOVL $20, AX // sys_getpid
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INT $0x80
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MOVL $0, 0(SP)
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MOVL AX, 4(SP) // arg 1 - pid
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MOVL sig+0(FP), AX
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MOVL AX, 8(SP) // arg 2 - signum
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MOVL $122, AX // sys_kill
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INT $0x80
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RET
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TEXT runtime·mmap(SB),NOSPLIT,$36
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LEAL addr+0(FP), SI
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LEAL 4(SP), DI
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CLD
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MOVSL // arg 1 - addr
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MOVSL // arg 2 - len
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MOVSL // arg 3 - prot
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MOVSL // arg 4 - flags
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MOVSL // arg 5 - fd
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MOVL $0, AX
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MOVL $0, AX
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STOSL // arg 6 - pad
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MOVSL // arg 7 - offset
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MOVL $0, AX // top 32 bits of file offset
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STOSL
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MOVL $197, AX // sys_mmap
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INT $0x80
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JAE ok
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MOVL $0, p+24(FP)
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MOVL AX, err+28(FP)
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RET
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ok:
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ok:
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MOVL AX, p+24(FP)
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MOVL 40(SP), DX
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MOVL $0, err+28(FP)
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MOVL AX, 24(DX)
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MOVL BX, 28(DX)
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MOVL BP, SP
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POPL BP
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RET
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RET
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TEXT runtime·munmap(SB),NOSPLIT,$-4
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TEXT runtime·munmap_trampoline(SB),NOSPLIT,$0
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MOVL $73, AX // sys_munmap
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PUSHL BP
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INT $0x80
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MOVL SP, BP
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JAE 2(PC)
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SUBL $8, SP
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MOVL $0xf1, 0xf1 // crash
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MOVL 16(SP), DX // pointer to args
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MOVL 0(DX), AX
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MOVL 4(DX), BX
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MOVL AX, 0(SP) // arg 1 - addr
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MOVL BX, 4(SP) // arg 2 - len
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CALL libc_munmap(SB)
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CMPL AX, $-1
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JNE 2(PC)
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MOVL $0xf1, 0xf1 // crash on failure
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MOVL BP, SP
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POPL BP
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RET
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RET
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TEXT runtime·madvise(SB),NOSPLIT,$-4
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TEXT runtime·madvise_trampoline(SB),NOSPLIT,$0
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MOVL $75, AX // sys_madvise
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PUSHL BP
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INT $0x80
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MOVL SP, BP
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JAE 2(PC)
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SUBL $12, SP
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MOVL $-1, AX
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MOVL 20(SP), DX // pointer to args
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MOVL AX, ret+12(FP)
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MOVL 0(DX), AX
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MOVL 4(DX), BX
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MOVL 8(DX), CX
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MOVL AX, 0(SP) // arg 1 - addr
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MOVL BX, 4(SP) // arg 2 - len
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MOVL CX, 8(SP) // arg 3 - advice
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CALL libc_madvise(SB)
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// ignore failure - maybe pages are locked
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MOVL BP, SP
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POPL BP
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RET
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RET
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TEXT runtime·setitimer(SB),NOSPLIT,$-4
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TEXT runtime·open_trampoline(SB),NOSPLIT,$0
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MOVL $69, AX
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PUSHL BP
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INT $0x80
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MOVL SP, BP
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SUBL $16, SP
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MOVL 24(SP), DX // pointer to args
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MOVL 0(DX), AX
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MOVL 4(DX), BX
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MOVL 8(DX), CX
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MOVL AX, 0(SP) // arg 1 - path
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MOVL BX, 4(SP) // arg 2 - flags
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MOVL CX, 8(SP) // arg 3 - mode
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MOVL $0, 12(SP) // vararg
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CALL libc_open(SB)
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MOVL BP, SP
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POPL BP
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RET
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RET
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// func walltime() (sec int64, nsec int32)
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TEXT runtime·close_trampoline(SB),NOSPLIT,$0
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TEXT runtime·walltime(SB), NOSPLIT, $32
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PUSHL BP
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LEAL 12(SP), BX
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MOVL SP, BP
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MOVL $0, 4(SP) // arg 1 - clock_id
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SUBL $4, SP
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MOVL BX, 8(SP) // arg 2 - tp
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MOVL 12(SP), DX
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MOVL $87, AX // sys_clock_gettime
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MOVL 0(DX), AX
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INT $0x80
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MOVL AX, 0(SP) // arg 1 - fd
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CALL libc_close(SB)
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MOVL 12(SP), AX // sec - l32
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MOVL BP, SP
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MOVL AX, sec_lo+0(FP)
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POPL BP
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MOVL 16(SP), AX // sec - h32
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MOVL AX, sec_hi+4(FP)
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MOVL 20(SP), BX // nsec
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MOVL BX, nsec+8(FP)
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RET
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RET
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// int64 nanotime1(void) so really
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TEXT runtime·read_trampoline(SB),NOSPLIT,$0
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// void nanotime1(int64 *nsec)
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PUSHL BP
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TEXT runtime·nanotime1(SB),NOSPLIT,$32
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MOVL SP, BP
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LEAL 12(SP), BX
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SUBL $12, SP
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MOVL CLOCK_MONOTONIC, 4(SP) // arg 1 - clock_id
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MOVL 20(SP), DX // pointer to args
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MOVL BX, 8(SP) // arg 2 - tp
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MOVL 0(DX), AX
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MOVL $87, AX // sys_clock_gettime
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MOVL 4(DX), BX
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INT $0x80
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MOVL 8(DX), CX
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MOVL AX, 0(SP) // arg 1 - fd
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MOVL 16(SP), CX // sec - h32
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MOVL BX, 4(SP) // arg 2 - buf
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IMULL $1000000000, CX
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MOVL CX, 8(SP) // arg 3 - count
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CALL libc_read(SB)
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MOVL 12(SP), AX // sec - l32
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CMPL AX, $-1
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MOVL $1000000000, BX
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JNE noerr
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MULL BX // result in dx:ax
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CALL libc_errno(SB)
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MOVL (AX), AX
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MOVL 20(SP), BX // nsec
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NEGL AX // caller expects negative errno
|
||||||
ADDL BX, AX
|
noerr:
|
||||||
ADCL CX, DX // add high bits with carry
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
MOVL AX, ret_lo+0(FP)
|
|
||||||
MOVL DX, ret_hi+4(FP)
|
|
||||||
RET
|
RET
|
||||||
|
|
||||||
TEXT runtime·sigaction(SB),NOSPLIT,$-4
|
TEXT runtime·write_trampoline(SB),NOSPLIT,$0
|
||||||
MOVL $46, AX // sys_sigaction
|
PUSHL BP
|
||||||
INT $0x80
|
MOVL SP, BP
|
||||||
JAE 2(PC)
|
SUBL $12, SP
|
||||||
MOVL $0xf1, 0xf1 // crash
|
MOVL 20(SP), DX // pointer to args
|
||||||
|
MOVL 0(DX), AX
|
||||||
|
MOVL 4(DX), BX
|
||||||
|
MOVL 8(DX), CX
|
||||||
|
MOVL AX, 0(SP) // arg 1 - fd
|
||||||
|
MOVL BX, 4(SP) // arg 2 - buf
|
||||||
|
MOVL CX, 8(SP) // arg 3 - count
|
||||||
|
CALL libc_write(SB)
|
||||||
|
CMPL AX, $-1
|
||||||
|
JNE noerr
|
||||||
|
CALL libc_errno(SB)
|
||||||
|
MOVL (AX), AX
|
||||||
|
NEGL AX // caller expects negative errno
|
||||||
|
noerr:
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
TEXT runtime·obsdsigprocmask(SB),NOSPLIT,$-4
|
TEXT runtime·pipe2_trampoline(SB),NOSPLIT,$0
|
||||||
MOVL $48, AX // sys_sigprocmask
|
PUSHL BP
|
||||||
INT $0x80
|
MOVL SP, BP
|
||||||
JAE 2(PC)
|
SUBL $8, SP
|
||||||
MOVL $0xf1, 0xf1 // crash
|
MOVL 16(SP), DX // pointer to args
|
||||||
MOVL AX, ret+8(FP)
|
MOVL 0(DX), AX
|
||||||
|
MOVL 4(DX), BX
|
||||||
|
MOVL AX, 0(SP) // arg 1 - fds
|
||||||
|
MOVL BX, 4(SP) // arg 2 - flags
|
||||||
|
CALL libc_pipe2(SB)
|
||||||
|
CMPL AX, $-1
|
||||||
|
JNE noerr
|
||||||
|
CALL libc_errno(SB)
|
||||||
|
MOVL (AX), AX
|
||||||
|
NEGL AX // caller expects negative errno
|
||||||
|
noerr:
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
TEXT runtime·sigaltstack(SB),NOSPLIT,$-8
|
TEXT runtime·setitimer_trampoline(SB),NOSPLIT,$0
|
||||||
MOVL $288, AX // sys_sigaltstack
|
PUSHL BP
|
||||||
MOVL new+0(FP), BX
|
MOVL SP, BP
|
||||||
MOVL old+4(FP), CX
|
SUBL $12, SP
|
||||||
INT $0x80
|
MOVL 20(SP), DX // pointer to args
|
||||||
CMPL AX, $0xfffff001
|
MOVL 0(DX), AX
|
||||||
JLS 2(PC)
|
MOVL 4(DX), BX
|
||||||
INT $3
|
MOVL 8(DX), CX
|
||||||
|
MOVL AX, 0(SP) // arg 1 - which
|
||||||
|
MOVL BX, 4(SP) // arg 2 - new
|
||||||
|
MOVL CX, 8(SP) // arg 3 - old
|
||||||
|
CALL libc_setitimer(SB)
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
TEXT set_tcb<>(SB),NOSPLIT,$8
|
TEXT runtime·usleep_trampoline(SB),NOSPLIT,$0
|
||||||
// adjust for ELF: wants to use -4(GS) for g
|
PUSHL BP
|
||||||
MOVL tlsbase+0(FP), CX
|
MOVL SP, BP
|
||||||
ADDL $4, CX
|
SUBL $4, SP
|
||||||
MOVL $0, 0(SP) // syscall gap
|
MOVL 12(SP), DX // pointer to args
|
||||||
MOVL CX, 4(SP) // arg 1 - tcb
|
MOVL 0(DX), AX
|
||||||
MOVL $329, AX // sys___set_tcb
|
MOVL AX, 0(SP)
|
||||||
INT $0x80
|
CALL libc_usleep(SB)
|
||||||
JCC 2(PC)
|
MOVL BP, SP
|
||||||
MOVL $0xf1, 0xf1 // crash
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
TEXT runtime·sysctl(SB),NOSPLIT,$28
|
TEXT runtime·sysctl_trampoline(SB),NOSPLIT,$0
|
||||||
LEAL mib+0(FP), SI
|
PUSHL BP
|
||||||
LEAL 4(SP), DI
|
MOVL SP, BP
|
||||||
CLD
|
SUBL $24, SP
|
||||||
MOVSL // arg 1 - name
|
MOVL 32(SP), DX // pointer to args
|
||||||
MOVSL // arg 2 - namelen
|
MOVL 0(DX), AX
|
||||||
MOVSL // arg 3 - oldp
|
MOVL 4(DX), BX
|
||||||
MOVSL // arg 4 - oldlenp
|
MOVL 8(DX), CX
|
||||||
MOVSL // arg 5 - newp
|
MOVL AX, 0(SP) // arg 1 - name
|
||||||
MOVSL // arg 6 - newlen
|
MOVL BX, 4(SP) // arg 2 - namelen
|
||||||
MOVL $202, AX // sys___sysctl
|
MOVL CX, 8(SP) // arg 3 - old
|
||||||
INT $0x80
|
MOVL 12(DX), AX
|
||||||
JCC 4(PC)
|
MOVL 16(DX), BX
|
||||||
NEGL AX
|
MOVL 20(DX), CX
|
||||||
MOVL AX, ret+24(FP)
|
MOVL AX, 12(SP) // arg 4 - oldlenp
|
||||||
RET
|
MOVL BX, 16(SP) // arg 5 - newp
|
||||||
MOVL $0, AX
|
MOVL CX, 20(SP) // arg 6 - newlen
|
||||||
MOVL AX, ret+24(FP)
|
CALL libc_sysctl(SB)
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
// int32 runtime·kqueue(void);
|
TEXT runtime·kqueue_trampoline(SB),NOSPLIT,$0
|
||||||
TEXT runtime·kqueue(SB),NOSPLIT,$0
|
PUSHL BP
|
||||||
MOVL $269, AX
|
MOVL SP, BP
|
||||||
INT $0x80
|
CALL libc_kqueue(SB)
|
||||||
JAE 2(PC)
|
MOVL BP, SP
|
||||||
NEGL AX
|
POPL BP
|
||||||
MOVL AX, ret+0(FP)
|
|
||||||
RET
|
RET
|
||||||
|
|
||||||
// int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout);
|
TEXT runtime·kevent_trampoline(SB),NOSPLIT,$0
|
||||||
TEXT runtime·kevent(SB),NOSPLIT,$0
|
PUSHL BP
|
||||||
MOVL $72, AX // sys_kevent
|
MOVL SP, BP
|
||||||
INT $0x80
|
SUBL $24, SP
|
||||||
JAE 2(PC)
|
MOVL 32(SP), DX // pointer to args
|
||||||
NEGL AX
|
MOVL 0(DX), AX
|
||||||
MOVL AX, ret+24(FP)
|
MOVL 4(DX), BX
|
||||||
|
MOVL 8(DX), CX
|
||||||
|
MOVL AX, 0(SP) // arg 1 - kq
|
||||||
|
MOVL BX, 4(SP) // arg 2 - keventt
|
||||||
|
MOVL CX, 8(SP) // arg 3 - nch
|
||||||
|
MOVL 12(DX), AX
|
||||||
|
MOVL 16(DX), BX
|
||||||
|
MOVL 20(DX), CX
|
||||||
|
MOVL AX, 12(SP) // arg 4 - ev
|
||||||
|
MOVL BX, 16(SP) // arg 5 - nev
|
||||||
|
MOVL CX, 20(SP) // arg 6 - ts
|
||||||
|
CALL libc_kevent(SB)
|
||||||
|
CMPL AX, $-1
|
||||||
|
JNE noerr
|
||||||
|
CALL libc_errno(SB)
|
||||||
|
MOVL (AX), AX
|
||||||
|
NEGL AX // caller expects negative errno
|
||||||
|
noerr:
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
// int32 runtime·closeonexec(int32 fd);
|
TEXT runtime·clock_gettime_trampoline(SB),NOSPLIT,$0
|
||||||
TEXT runtime·closeonexec(SB),NOSPLIT,$32
|
PUSHL BP
|
||||||
MOVL $92, AX // sys_fcntl
|
MOVL SP, BP
|
||||||
// 0(SP) is where the caller PC would be; kernel skips it
|
SUBL $8, SP
|
||||||
MOVL fd+0(FP), BX
|
MOVL 16(SP), DX // pointer to args
|
||||||
MOVL BX, 4(SP) // fd
|
MOVL 0(DX), AX
|
||||||
MOVL $2, 8(SP) // F_SETFD
|
MOVL 4(DX), BX
|
||||||
MOVL $1, 12(SP) // FD_CLOEXEC
|
MOVL AX, 0(SP) // arg 1 - tp
|
||||||
INT $0x80
|
MOVL BX, 4(SP) // arg 2 - clock_id
|
||||||
JAE 2(PC)
|
CALL libc_clock_gettime(SB)
|
||||||
NEGL AX
|
CMPL AX, $-1
|
||||||
|
JNE 2(PC)
|
||||||
|
MOVL $0xf1, 0xf1 // crash on failure
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
// func runtime·setNonblock(fd int32)
|
TEXT runtime·fcntl_trampoline(SB),NOSPLIT,$0
|
||||||
TEXT runtime·setNonblock(SB),NOSPLIT,$16-4
|
PUSHL BP
|
||||||
MOVL $92, AX // fcntl
|
MOVL SP, BP
|
||||||
MOVL fd+0(FP), BX // fd
|
SUBL $16, SP
|
||||||
MOVL BX, 4(SP)
|
MOVL 24(SP), DX // pointer to args
|
||||||
MOVL $3, 8(SP) // F_GETFL
|
MOVL 0(DX), AX
|
||||||
MOVL $0, 12(SP)
|
MOVL 4(DX), BX
|
||||||
INT $0x80
|
MOVL 8(DX), CX
|
||||||
MOVL fd+0(FP), BX // fd
|
MOVL AX, 0(SP) // arg 1 - fd
|
||||||
MOVL BX, 4(SP)
|
MOVL BX, 4(SP) // arg 2 - cmd
|
||||||
MOVL $4, 8(SP) // F_SETFL
|
MOVL CX, 8(SP) // arg 3 - arg
|
||||||
ORL $4, AX // O_NONBLOCK
|
MOVL $0, 12(SP) // vararg
|
||||||
MOVL AX, 12(SP)
|
CALL libc_fcntl(SB)
|
||||||
MOVL $92, AX // fcntl
|
MOVL BP, SP
|
||||||
INT $0x80
|
POPL BP
|
||||||
RET
|
RET
|
||||||
|
|
||||||
GLOBL runtime·tlsoffset(SB),NOPTR,$4
|
TEXT runtime·sigaction_trampoline(SB),NOSPLIT,$0
|
||||||
|
PUSHL BP
|
||||||
|
MOVL SP, BP
|
||||||
|
SUBL $12, SP
|
||||||
|
MOVL 20(SP), DX // pointer to args
|
||||||
|
MOVL 0(DX), AX
|
||||||
|
MOVL 4(DX), BX
|
||||||
|
MOVL 8(DX), CX
|
||||||
|
MOVL AX, 0(SP) // arg 1 - sig
|
||||||
|
MOVL BX, 4(SP) // arg 2 - new
|
||||||
|
MOVL CX, 8(SP) // arg 3 - old
|
||||||
|
CALL libc_sigaction(SB)
|
||||||
|
CMPL AX, $-1
|
||||||
|
JNE 2(PC)
|
||||||
|
MOVL $0xf1, 0xf1 // crash on failure
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
|
RET
|
||||||
|
|
||||||
|
TEXT runtime·sigprocmask_trampoline(SB),NOSPLIT,$0
|
||||||
|
PUSHL BP
|
||||||
|
MOVL SP, BP
|
||||||
|
SUBL $12, SP
|
||||||
|
MOVL 20(SP), DX // pointer to args
|
||||||
|
MOVL 0(DX), AX
|
||||||
|
MOVL 4(DX), BX
|
||||||
|
MOVL 8(DX), CX
|
||||||
|
MOVL AX, 0(SP) // arg 1 - how
|
||||||
|
MOVL BX, 4(SP) // arg 2 - new
|
||||||
|
MOVL CX, 8(SP) // arg 3 - old
|
||||||
|
CALL libc_pthread_sigmask(SB)
|
||||||
|
CMPL AX, $-1
|
||||||
|
JNE 2(PC)
|
||||||
|
MOVL $0xf1, 0xf1 // crash on failure
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
|
RET
|
||||||
|
|
||||||
|
TEXT runtime·sigaltstack_trampoline(SB),NOSPLIT,$0
|
||||||
|
PUSHL BP
|
||||||
|
MOVL SP, BP
|
||||||
|
SUBL $8, SP
|
||||||
|
MOVL 16(SP), DX // pointer to args
|
||||||
|
MOVL 0(DX), AX
|
||||||
|
MOVL 4(DX), BX
|
||||||
|
MOVL AX, 0(SP) // arg 1 - new
|
||||||
|
MOVL BX, 4(SP) // arg 2 - old
|
||||||
|
CALL libc_sigaltstack(SB)
|
||||||
|
CMPL AX, $-1
|
||||||
|
JNE 2(PC)
|
||||||
|
MOVL $0xf1, 0xf1 // crash on failure
|
||||||
|
MOVL BP, SP
|
||||||
|
POPL BP
|
||||||
|
RET
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue