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runtime: update openbsd thread related syscalls to match kernel

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Update the threxit and thrsleep syscalls to match the ABI of the
OpenBSD 5.1 kernel. These changes are backwards compatible with
older kernels.

Fixes #3311.

R=golang-dev, rsc, devon.odell
CC=golang-dev
https://golang.org/cl/5777079
This commit is contained in:
Joel Sing 2012-04-11 22:02:08 +10:00
parent d7bc644ba2
commit 8cea1bf102
3 changed files with 33 additions and 28 deletions
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24
src/pkg/runtime/sys_openbsd_386.s
View File

@ -12,14 +12,16 @@
TEXT runtime·exit(SB),7,$-4
MOVL $1, AX
INT $0x80
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·exit1(SB),7,$-4
MOVL $302, AX // sys_threxit
TEXT runtime·exit1(SB),7,$8
MOVL $0, 0(SP)
MOVL $0, 4(SP) // arg 1 - notdead
MOVL $302, AX // sys___threxit
INT $0x80
JAE 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·write(SB),7,$-4
@ -79,7 +81,7 @@ TEXT runtime·munmap(SB),7,$-4
MOVL $73, AX // sys_munmap
INT $0x80
JAE 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·setitimer(SB),7,$-4
@ -132,14 +134,14 @@ TEXT runtime·sigaction(SB),7,$-4
MOVL $46, AX // sys_sigaction
INT $0x80
JAE 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·sigprocmask(SB),7,$-4
MOVL $48, AX // sys_sigprocmask
INT $0x80
JAE 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
MOVL AX, oset+0(FP)
RET
@ -182,7 +184,7 @@ TEXT runtime·sigtramp(SB),7,$44
MOVL AX, 4(SP) // arg 1 - sigcontext
MOVL $103, AX // sys_sigreturn
INT $0x80
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
// int32 rfork_thread(int32 flags, void *stack, M *m, G *g, void (*fn)(void));
@ -294,7 +296,7 @@ TEXT runtime·settls(SB),7,$16
MOVL $165, AX // sys_sysarch
INT $0x80
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·osyield(SB),7,$-4
@ -303,12 +305,12 @@ TEXT runtime·osyield(SB),7,$-4
RET
TEXT runtime·thrsleep(SB),7,$-4
MOVL $300, AX // sys_thrsleep
MOVL $300, AX // sys___thrsleep
INT $0x80
RET
TEXT runtime·thrwakeup(SB),7,$-4
MOVL $301, AX // sys_thrwakeup
MOVL $301, AX // sys___thrwakeup
INT $0x80
RET

31
src/pkg/runtime/sys_openbsd_amd64.s
View File

@ -53,7 +53,8 @@ TEXT runtime·rfork_thread(SB),7,$0
CALL R12
// It shouldn't return. If it does, exit
MOVL $302, AX // sys_threxit
MOVQ $0, DI // arg 1 - notdead
MOVL $302, AX // sys___threxit
SYSCALL
JMP -3(PC) // keep exiting
@ -67,14 +68,15 @@ TEXT runtime·thrsleep(SB),7,$0
MOVL 16(SP), SI // arg 2 - clock_id
MOVQ 24(SP), DX // arg 3 - tp
MOVQ 32(SP), R10 // arg 4 - lock
MOVL $300, AX // sys_thrsleep
MOVQ 40(SP), R8 // arg 5 - abort
MOVL $300, AX // sys___thrsleep
SYSCALL
RET
TEXT runtime·thrwakeup(SB),7,$0
MOVQ 8(SP), DI // arg 1 - ident
MOVL 16(SP), SI // arg 2 - n
MOVL $301, AX // sys_thrwakeup
MOVL $301, AX // sys___thrwakeup
SYSCALL
RET
@ -83,13 +85,14 @@ TEXT runtime·exit(SB),7,$-8
MOVL 8(SP), DI // arg 1 - exit status
MOVL $1, AX // sys_exit
SYSCALL
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·exit1(SB),7,$-8
MOVL $302, AX // sys_threxit
MOVQ $0, DI // arg 1 - notdead
MOVL $302, AX // sys___threxit
SYSCALL
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·write(SB),7,$-8
@ -140,7 +143,7 @@ TEXT time·now(SB), 7, $32
MOVL $116, AX // sys_gettimeofday
SYSCALL
MOVQ 8(SP), AX // sec
MOVL 16(SP), DX // usec
MOVL 16(SP), DX // usec
// sec is in AX, usec in DX
MOVQ AX, sec+0(FP)
@ -154,7 +157,7 @@ TEXT runtime·nanotime(SB),7,$32
MOVL $116, AX // sys_gettimeofday
SYSCALL
MOVQ 8(SP), AX // sec
MOVL 16(SP), DX // usec
MOVL 16(SP), DX // usec
// sec is in AX, usec in DX
// return nsec in AX
@ -170,7 +173,7 @@ TEXT runtime·sigaction(SB),7,$-8
MOVL $46, AX
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·sigprocmask(SB),7,$0
@ -179,7 +182,7 @@ TEXT runtime·sigprocmask(SB),7,$0
MOVL $48, AX // sys_sigprocmask
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
MOVL AX, oset+0(FP) // Return oset
RET
@ -236,7 +239,7 @@ TEXT runtime·munmap(SB),7,$0
MOVL $73, AX // sys_munmap
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·sigaltstack(SB),7,$-8
@ -245,7 +248,7 @@ TEXT runtime·sigaltstack(SB),7,$-8
MOVQ $288, AX // sys_sigaltstack
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
// set tls base to DI
@ -258,7 +261,7 @@ TEXT runtime·settls(SB),7,$8
MOVQ $165, AX // sys_sysarch
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·sysctl(SB),7,$0
@ -270,7 +273,7 @@ TEXT runtime·sysctl(SB),7,$0
MOVQ 48(SP), R9 // arg 6 - newlen
MOVQ $202, AX // sys___sysctl
SYSCALL
JCC 3(PC)
JCC 3(PC)
NEGL AX
RET
MOVL $0, AX

6
src/pkg/runtime/thread_openbsd.c
View File

@ -24,7 +24,7 @@ static Sigset sigset_all = ~(Sigset)0;
static Sigset sigset_none;
extern int64 runtime·rfork_thread(int32 flags, void *stack, M *m, G *g, void (*fn)(void));
extern int32 runtime·thrsleep(void *ident, int32 clock_id, void *tsp, void *lock);
extern int32 runtime·thrsleep(void *ident, int32 clock_id, void *tsp, void *lock, const int32 *abort);
extern int32 runtime·thrwakeup(void *ident, int32 n);
// From OpenBSD's <sys/sysctl.h>
@ -72,12 +72,12 @@ runtime·semasleep(int64 ns)
// sleep until semaphore != 0 or timeout.
// thrsleep unlocks m->waitsemalock.
if(ns < 0)
runtime·thrsleep(&m->waitsemacount, 0, nil, &m->waitsemalock);
runtime·thrsleep(&m->waitsemacount, 0, nil, &m->waitsemalock, nil);
else {
ns += runtime·nanotime();
ts.tv_sec = ns/1000000000LL;
ts.tv_nsec = ns%1000000000LL;
runtime·thrsleep(&m->waitsemacount, CLOCK_REALTIME, &ts, &m->waitsemalock);
runtime·thrsleep(&m->waitsemacount, CLOCK_REALTIME, &ts, &m->waitsemalock, nil);
}
// reacquire lock
while(runtime·xchg(&m->waitsemalock, 1))