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runtime: print error on receipt of signal on non-Go thread

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It's the best we can do before Go 1.

For issue 3250; not a fix but at least less mysterious.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5797068
This commit is contained in:
Russ Cox 2012-03-12 15:55:18 -04:00
parent 72801291d6
commit b23691148f
19 changed files with 181 additions and 9 deletions
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7
src/pkg/runtime/sys_darwin_386.s
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@ -127,12 +127,17 @@ TEXT runtime·sigaction(SB),7,$0
TEXT runtime·sigtramp(SB),7,$40
get_tls(CX)
// check that m exists
MOVL m(CX), BP
CMPL BP, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVL g(CX), DI
MOVL DI, 20(SP)
// g = m->gsignal
MOVL m(CX), BP
MOVL m_gsignal(BP), BP
MOVL BP, g(CX)

7
src/pkg/runtime/sys_darwin_amd64.s
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@ -117,12 +117,17 @@ TEXT runtime·sigaction(SB),7,$0
TEXT runtime·sigtramp(SB),7,$64
get_tls(BX)
// check that m exists
MOVQ m(BX), BP
CMPQ BP, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVQ g(BX), R10
MOVQ R10, 48(SP)
// g = m->gsignal
MOVQ m(BX), BP
MOVQ m_gsignal(BP), BP
MOVQ BP, g(BX)

7
src/pkg/runtime/sys_freebsd_386.s
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@ -159,12 +159,17 @@ TEXT runtime·sigaction(SB),7,$-4
TEXT runtime·sigtramp(SB),7,$44
get_tls(CX)
// check that m exists
MOVL m(CX), BX
CMPL BX, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVL g(CX), DI
MOVL DI, 20(SP)
// g = m->gsignal
MOVL m(CX), BX
MOVL m_gsignal(BX), BX
MOVL BX, g(CX)

7
src/pkg/runtime/sys_freebsd_amd64.s
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@ -135,12 +135,17 @@ TEXT runtime·sigaction(SB),7,$-8
TEXT runtime·sigtramp(SB),7,$64
get_tls(BX)
// check that m exists
MOVQ m(BX), BP
CMPQ BP, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVQ g(BX), R10
MOVQ R10, 40(SP)
// g = m->signal
MOVQ m(BX), BP
MOVQ m_gsignal(BP), BP
MOVQ BP, g(BX)

6
src/pkg/runtime/sys_linux_386.s
View File

@ -167,6 +167,12 @@ TEXT runtime·rt_sigaction(SB),7,$0
TEXT runtime·sigtramp(SB),7,$44
get_tls(CX)
// check that m exists
MOVL m(CX), BX
CMPL BX, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVL g(CX), DI
MOVL DI, 20(SP)

7
src/pkg/runtime/sys_linux_amd64.s
View File

@ -154,12 +154,17 @@ TEXT runtime·rt_sigaction(SB),7,$0-32
TEXT runtime·sigtramp(SB),7,$64
get_tls(BX)
// check that m exists
MOVQ m(BX), BP
CMPQ BP, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVQ g(BX), R10
MOVQ R10, 40(SP)
// g = m->gsignal
MOVQ m(BX), BP
MOVQ m_gsignal(BP), BP
MOVQ BP, g(BX)

7
src/pkg/runtime/sys_netbsd_386.s
View File

@ -138,12 +138,17 @@ TEXT runtime·sigaction(SB),7,$-4
TEXT runtime·sigtramp(SB),7,$44
get_tls(CX)
// check that m exists
MOVL m(CX), BX
CMPL BX, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVL g(CX), DI
MOVL DI, 20(SP)
// g = m->gsignal
MOVL m(CX), BX
MOVL m_gsignal(BX), BX
MOVL BX, g(CX)

7
src/pkg/runtime/sys_netbsd_amd64.s
View File

@ -176,12 +176,17 @@ TEXT runtime·sigaction(SB),7,$-8
TEXT runtime·sigtramp(SB),7,$64
get_tls(BX)
// check that m exists
MOVQ m(BX), BP
CMPQ BP, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVQ g(BX), R10
MOVQ R10, 40(SP)
// g = m->signal
MOVQ m(BX), BP
MOVQ m_gsignal(BP), BP
MOVQ BP, g(BX)

7
src/pkg/runtime/sys_openbsd_386.s
View File

@ -138,12 +138,17 @@ TEXT runtime·sigaction(SB),7,$-4
TEXT runtime·sigtramp(SB),7,$44
get_tls(CX)
// check that m exists
MOVL m(CX), BX
CMPL BX, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVL g(CX), DI
MOVL DI, 20(SP)
// g = m->gsignal
MOVL m(CX), BX
MOVL m_gsignal(BX), BX
MOVL BX, g(CX)

7
src/pkg/runtime/sys_openbsd_amd64.s
View File

@ -176,12 +176,17 @@ TEXT runtime·sigaction(SB),7,$-8
TEXT runtime·sigtramp(SB),7,$64
get_tls(BX)
// check that m exists
MOVQ m(BX), BP
CMPQ BP, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
// save g
MOVQ g(BX), R10
MOVQ R10, 40(SP)
// g = m->signal
MOVQ m(BX), BP
MOVQ m_gsignal(BP), BP
MOVQ BP, g(BX)

28
src/pkg/runtime/sys_windows_386.s
View File

@ -58,6 +58,26 @@ TEXT runtime·badcallback(SB),7,$24
MOVL BP, SI
RET
TEXT runtime·badsignal(SB),7,$24
// stderr
MOVL $-12, 0(SP)
MOVL SP, BP
CALL *runtime·GetStdHandle(SB)
MOVL BP, SP
MOVL AX, 0(SP) // handle
MOVL $runtime·badsignalmsg(SB), DX // pointer
MOVL DX, 4(SP)
MOVL runtime·badsignallen(SB), DX // count
MOVL DX, 8(SP)
LEAL 20(SP), DX // written count
MOVL $0, 0(DX)
MOVL DX, 12(SP)
MOVL $0, 16(SP) // overlapped
CALL *runtime·WriteFile(SB)
MOVL BP, SI
RET
// faster get/set last error
TEXT runtime·getlasterror(SB),7,$0
MOVL 0x34(FS), AX
@ -79,7 +99,15 @@ TEXT runtime·sigtramp(SB),7,$28
MOVL CX, 0(SP)
MOVL context+8(FP), CX
MOVL CX, 4(SP)
get_tls(CX)
// check that m exists
MOVL m(CX), AX
CMPL AX, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
MOVL g(CX), CX
MOVL CX, 8(SP)

30
src/pkg/runtime/sys_windows_amd64.s
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@ -82,6 +82,28 @@ TEXT runtime·badcallback(SB),7,$48
RET
TEXT runtime·badsignal(SB),7,$48
// stderr
MOVQ $-12, CX // stderr
MOVQ CX, 0(SP)
MOVQ runtime·GetStdHandle(SB), AX
CALL AX
MOVQ AX, CX // handle
MOVQ CX, 0(SP)
MOVQ $runtime·badsignalmsg(SB), DX // pointer
MOVQ DX, 8(SP)
MOVL $runtime·badsignallen(SB), R8 // count
MOVQ R8, 16(SP)
LEAQ 40(SP), R9 // written count
MOVQ $0, 0(R9)
MOVQ R9, 24(SP)
MOVQ $0, 32(SP) // overlapped
MOVQ runtime·WriteFile(SB), AX
CALL AX
RET
// faster get/set last error
TEXT runtime·getlasterror(SB),7,$0
MOVQ 0x30(GS), AX
@ -106,7 +128,15 @@ TEXT runtime·sigtramp(SB),7,$56
// copy arguments for call to sighandler
MOVQ CX, 0(SP)
MOVQ R8, 8(SP)
get_tls(CX)
// check that m exists
MOVQ m(BX), AX
CMPQ AX, $0
JNE 2(PC)
CALL runtime·badsignal(SB)
MOVQ g(CX), CX
MOVQ CX, 16(SP)

10
src/pkg/runtime/thread_darwin.c
View File

@ -487,3 +487,13 @@ runtime·badcallback(void)
{
runtime·write(2, badcallback, sizeof badcallback - 1);
}
static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n";
// This runs on a foreign stack, without an m or a g. No stack split.
#pragma textflag 7
void
runtime·badsignal(void)
{
runtime·write(2, badsignal, sizeof badsignal - 1);
}

10
src/pkg/runtime/thread_freebsd.c
View File

@ -205,3 +205,13 @@ runtime·badcallback(void)
{
runtime·write(2, badcallback, sizeof badcallback - 1);
}
static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n";
// This runs on a foreign stack, without an m or a g. No stack split.
#pragma textflag 7
void
runtime·badsignal(void)
{
runtime·write(2, badsignal, sizeof badsignal - 1);
}

10
src/pkg/runtime/thread_linux.c
View File

@ -265,3 +265,13 @@ runtime·badcallback(void)
{
runtime·write(2, badcallback, sizeof badcallback - 1);
}
static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n";
// This runs on a foreign stack, without an m or a g. No stack split.
#pragma textflag 7
void
runtime·badsignal(void)
{
runtime·write(2, badsignal, sizeof badsignal - 1);
}

10
src/pkg/runtime/thread_netbsd.c
View File

@ -223,3 +223,13 @@ runtime·badcallback(void)
{
runtime·write(2, badcallback, sizeof badcallback - 1);
}
static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n";
// This runs on a foreign stack, without an m or a g. No stack split.
#pragma textflag 7
void
runtime·badsignal(void)
{
runtime·write(2, badsignal, sizeof badsignal - 1);
}

10
src/pkg/runtime/thread_openbsd.c
View File

@ -223,3 +223,13 @@ runtime·badcallback(void)
{
runtime·write(2, badcallback, sizeof badcallback - 1);
}
static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n";
// This runs on a foreign stack, without an m or a g. No stack split.
#pragma textflag 7
void
runtime·badsignal(void)
{
runtime·write(2, badsignal, sizeof badsignal - 1);
}

10
src/pkg/runtime/thread_plan9.c
View File

@ -257,3 +257,13 @@ runtime·badcallback(void)
{
runtime·pwrite(2, badcallback, sizeof badcallback - 1, -1LL);
}
static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n";
// This runs on a foreign stack, without an m or a g. No stack split.
#pragma textflag 7
void
runtime·badsignal(void)
{
runtime·pwrite(2, badsignal, sizeof badsignal - 1, -1LL);
}

3
src/pkg/runtime/thread_windows.c
View File

@ -425,3 +425,6 @@ runtime·setprof(bool on)
int8 runtime·badcallbackmsg[] = "runtime: cgo callback on thread not created by Go.\n";
int32 runtime·badcallbacklen = sizeof runtime·badcallbackmsg - 1;
int8 runtime·badsignalmsg[] = "runtime: signal received on thread not created by Go.\n";
int32 runtime·badsignallen = sizeof runtime·badsignalmsg - 1;