diff options
Diffstat (limited to 'sys/arch/mvme68k/mvme68k/locore.s')
| -rw-r--r-- | sys/arch/mvme68k/mvme68k/locore.s | 39 |
1 files changed, 2 insertions, 37 deletions
diff --git a/sys/arch/mvme68k/mvme68k/locore.s b/sys/arch/mvme68k/mvme68k/locore.s index 9dc6fc1008e..d1c7f67e0ef 100644 --- a/sys/arch/mvme68k/mvme68k/locore.s +++ b/sys/arch/mvme68k/mvme68k/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.6 1996/04/28 10:57:27 deraadt Exp $ */ +/* $OpenBSD: locore.s,v 1.7 1996/05/03 09:03:49 niklas Exp $ */ /* * Copyright (c) 1995 Theo de Raadt @@ -978,42 +978,7 @@ _trace: moveq #T_TRACE,d0 jra fault -/* - * The sigreturn() syscall comes here. It requires special handling - * because we must open a hole in the stack to fill in the (possibly much - * larger) original stack frame. - */ -sigreturn: - lea sp@(-84),sp | leave enough space for largest frame - movl sp@(84),sp@ | move up current 8 byte frame - movl sp@(88),sp@(4) - movl #84,sp@- | default: adjust by 84 bytes - moveml #0xFFFF,sp@- | save user registers - movl usp,a0 | save the user SP - movl a0,sp@(FR_SP) | in the savearea - movl #SYS_sigreturn,sp@- | push syscall number - jbsr _syscall | handle it - addql #4,sp | pop syscall# - movl sp@(FR_SP),a0 | grab and restore - movl a0,usp | user SP - lea sp@(FR_HW),a1 | pointer to HW frame - movw sp@(FR_ADJ),d0 | do we need to adjust the stack? - jeq Lsigr1 | no, just continue - moveq #92,d1 | total size - subw d0,d1 | - hole size = frame size - lea a1@(92),a0 | destination - addw d1,a1 | source - lsrw #1,d1 | convert to word count - subqw #1,d1 | minus 1 for dbf -Lsigrlp: - movw a1@-,a0@- | copy a word - dbf d1,Lsigrlp | continue - movl a0,a1 | new HW frame base -Lsigr1: - movl a1,sp@(FR_SP) | new SP value - moveml sp@+,#0x7FFF | restore user registers - movl sp@,sp | and our SP - jra rei | all done +#include <m68k/m68k/sigreturn.s> /* * Interrupt handlers. |