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runtime: fix backtrace during C syscalls for aix/ppc64

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This commit fixes backtrace if a crash or an exit signal is received
during a C syscall on aix/ppc64.
This is similar to Solaris, Darwin or Windows implementation.

Change-Id: I6040c0b1577a9f5b298f58bd4ee6556258a135ef
Reviewed-on: https://go-review.googlesource.com/c/154718
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Clément Chigot 2018-12-18 13:00:26 +01:00 committed by Ian Lance Taylor
parent cebf9d47cf
commit 3855fe7254
1 changed files with 140 additions and 7 deletions
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147
src/runtime/os2_aix.go
View File

@ -151,91 +151,224 @@ var asmsyscall6 libFunc
//go:nowritebarrier
//go:nosplit
func syscall0(fn *libFunc) (r, err uintptr) {
c := &getg().m.libcall
gp := getg()
var mp *m
if gp != nil {
mp = gp.m
}
if mp != nil && mp.libcallsp == 0 {
mp.libcallg.set(gp)
mp.libcallpc = getcallerpc()
// sp must be the last, because once async cpu profiler finds
// all three values to be non-zero, it will use them
mp.libcallsp = getcallersp()
} else {
mp = nil // See comment in sys_darwin.go:libcCall
}
c := &gp.m.libcall
c.fn = uintptr(unsafe.Pointer(fn))
c.n = 0
c.args = uintptr(noescape(unsafe.Pointer(&fn))) // it's unused but must be non-nil, otherwise crashes
asmcgocall(unsafe.Pointer(&asmsyscall6), unsafe.Pointer(c))
if mp != nil {
mp.libcallsp = 0
}
return c.r1, c.err
}
//go:nowritebarrier
//go:nosplit
func syscall1(fn *libFunc, a0 uintptr) (r, err uintptr) {
c := &getg().m.libcall
gp := getg()
var mp *m
if gp != nil {
mp = gp.m
}
if mp != nil && mp.libcallsp == 0 {
mp.libcallg.set(gp)
mp.libcallpc = getcallerpc()
// sp must be the last, because once async cpu profiler finds
// all three values to be non-zero, it will use them
mp.libcallsp = getcallersp()
} else {
mp = nil // See comment in sys_darwin.go:libcCall
}
c := &gp.m.libcall
c.fn = uintptr(unsafe.Pointer(fn))
c.n = 1
c.args = uintptr(noescape(unsafe.Pointer(&a0)))
asmcgocall(unsafe.Pointer(&asmsyscall6), unsafe.Pointer(c))
if mp != nil {
mp.libcallsp = 0
}
return c.r1, c.err
}
//go:nowritebarrier
//go:nosplit
func syscall2(fn *libFunc, a0, a1 uintptr) (r, err uintptr) {
c := &getg().m.libcall
gp := getg()
var mp *m
if gp != nil {
mp = gp.m
}
if mp != nil && mp.libcallsp == 0 {
mp.libcallg.set(gp)
mp.libcallpc = getcallerpc()
// sp must be the last, because once async cpu profiler finds
// all three values to be non-zero, it will use them
mp.libcallsp = getcallersp()
} else {
mp = nil // See comment in sys_darwin.go:libcCall
}
c := &gp.m.libcall
c.fn = uintptr(unsafe.Pointer(fn))
c.n = 2
c.args = uintptr(noescape(unsafe.Pointer(&a0)))
asmcgocall(unsafe.Pointer(&asmsyscall6), unsafe.Pointer(c))
if mp != nil {
mp.libcallsp = 0
}
return c.r1, c.err
}
//go:nowritebarrier
//go:nosplit
func syscall3(fn *libFunc, a0, a1, a2 uintptr) (r, err uintptr) {
c := &getg().m.libcall
gp := getg()
var mp *m
if gp != nil {
mp = gp.m
}
if mp != nil && mp.libcallsp == 0 {
mp.libcallg.set(gp)
mp.libcallpc = getcallerpc()
// sp must be the last, because once async cpu profiler finds
// all three values to be non-zero, it will use them
mp.libcallsp = getcallersp()
} else {
mp = nil // See comment in sys_darwin.go:libcCall
}
c := &gp.m.libcall
c.fn = uintptr(unsafe.Pointer(fn))
c.n = 3
c.args = uintptr(noescape(unsafe.Pointer(&a0)))
asmcgocall(unsafe.Pointer(&asmsyscall6), unsafe.Pointer(c))
if mp != nil {
mp.libcallsp = 0
}
return c.r1, c.err
}
//go:nowritebarrier
//go:nosplit
func syscall4(fn *libFunc, a0, a1, a2, a3 uintptr) (r, err uintptr) {
c := &getg().m.libcall
gp := getg()
var mp *m
if gp != nil {
mp = gp.m
}
if mp != nil && mp.libcallsp == 0 {
mp.libcallg.set(gp)
mp.libcallpc = getcallerpc()
// sp must be the last, because once async cpu profiler finds
// all three values to be non-zero, it will use them
mp.libcallsp = getcallersp()
} else {
mp = nil // See comment in sys_darwin.go:libcCall
}
c := &gp.m.libcall
c.fn = uintptr(unsafe.Pointer(fn))
c.n = 4
c.args = uintptr(noescape(unsafe.Pointer(&a0)))
asmcgocall(unsafe.Pointer(&asmsyscall6), unsafe.Pointer(c))
if mp != nil {
mp.libcallsp = 0
}
return c.r1, c.err
}
//go:nowritebarrier
//go:nosplit
func syscall5(fn *libFunc, a0, a1, a2, a3, a4 uintptr) (r, err uintptr) {
c := &getg().m.libcall
gp := getg()
var mp *m
if gp != nil {
mp = gp.m
}
if mp != nil && mp.libcallsp == 0 {
mp.libcallg.set(gp)
mp.libcallpc = getcallerpc()
// sp must be the last, because once async cpu profiler finds
// all three values to be non-zero, it will use them
mp.libcallsp = getcallersp()
} else {
mp = nil // See comment in sys_darwin.go:libcCall
}
c := &gp.m.libcall
c.fn = uintptr(unsafe.Pointer(fn))
c.n = 5
c.args = uintptr(noescape(unsafe.Pointer(&a0)))
asmcgocall(unsafe.Pointer(&asmsyscall6), unsafe.Pointer(c))
if mp != nil {
mp.libcallsp = 0
}
return c.r1, c.err
}
//go:nowritebarrier
//go:nosplit
func syscall6(fn *libFunc, a0, a1, a2, a3, a4, a5 uintptr) (r, err uintptr) {
c := &getg().m.libcall
gp := getg()
var mp *m
if gp != nil {
mp = gp.m
}
if mp != nil && mp.libcallsp == 0 {
mp.libcallg.set(gp)
mp.libcallpc = getcallerpc()
// sp must be the last, because once async cpu profiler finds
// all three values to be non-zero, it will use them
mp.libcallsp = getcallersp()
} else {
mp = nil // See comment in sys_darwin.go:libcCall
}
c := &gp.m.libcall
c.fn = uintptr(unsafe.Pointer(fn))
c.n = 6
c.args = uintptr(noescape(unsafe.Pointer(&a0)))
asmcgocall(unsafe.Pointer(&asmsyscall6), unsafe.Pointer(c))
if mp != nil {
mp.libcallsp = 0
}
return c.r1, c.err
}