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Begin to support resuming execution beyond a signal handler frame (not working yet).

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(Logical change 1.40)
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mostang.com!davidm 2003-01-21 17:41:20 +00:00
parent 4f231eb84a
commit ca50cf6354
1 changed files with 11 additions and 3 deletions
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14
src/ia64/__ia64_install_context.S
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@ -1,5 +1,5 @@
/* libunwind - a platform-independent unwind library
Copyright (C) 2001-2002 Hewlett-Packard Co
Copyright (C) 2001-2003 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
@ -25,6 +25,8 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "ucontext_i.h"
#define SYS_sigreturn 1181
#ifndef UNW_REMOTE_ONLY
/* __ia64_install_context (const ucontext_t *ucp,
@ -37,10 +39,12 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
switches only. Therefore, it does not have to restore anything
other than the PRESERVED state. */
.hidden __ia64_install_context
.global __ia64_install_context
.proc __ia64_install_context
__ia64_install_context:
alloc r16 = ar.pfs, 5, 0, 0, 0
alloc r16 = ar.pfs, 6, 0, 0, 0
invala
add r2 = SC_NAT, r32
;;
@ -135,6 +139,7 @@ __ia64_install_context:
mov pr = rPR, -1
;;
mov.m ar.rsc = rTMP // put RSE into enforced lazy mode
cmp.eq p6,p0 = r0, in5
;;
loadrs // drop dirty partition
mov r18 = in4
@ -145,7 +150,10 @@ __ia64_install_context:
;;
mov.m ar.rnat = rRNAT
mov.m ar.rsc = rRSC
br.ret.sptk rp
(p6) br.ret.sptk rp
mov r15 = SYS_sigreturn
break 0x100000
.endp __ia64_install_context