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runtime: unregister the SIGILL handler after ARM EABI test

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Part of issue 3381

R=rsc, minux.ma, dave
CC=golang-dev
https://golang.org/cl/5969064
This commit is contained in:
Quan Yong Zhai 2012-04-10 15:05:22 -04:00 committed by Russ Cox
parent e530d6a1e0
commit e133ee9538
1 changed files with 12 additions and 4 deletions
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12
src/pkg/runtime/rt0_linux_arm.s
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@ -20,15 +20,23 @@ TEXT _rt0_arm_linux(SB),7,$-4
MOVM.DB.W [R0-R3], (R13)
MOVW $4, R0 // SIGILL
MOVW R13, R1 // sa
MOVW $0, R2 // old_sa
SUB $16, R13
MOVW R13, R2 // old_sa
MOVW $8, R3 // c
MOVW $174, R7 // sys_sigaction
BL oabi_syscall<>(SB)
ADD $16, R13
// do an EABI syscall
MOVW $20, R7 // sys_getpid
SWI $0 // this will trigger SIGILL on OABI systems
MOVW $4, R0 // SIGILL
MOVW R13, R1 // sa
MOVW $0, R2 // old_sa
MOVW $8, R3 // c
MOVW $174, R7 // sys_sigaction
SWI $0 // restore signal handler
ADD $32, R13
B _rt0_arm(SB)
TEXT bad_abi<>(SB),7,$-4