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(save_static_to_scratch): New routine.

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(Logical change 1.179)
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hp.com!davidm 2004-02-27 00:59:41 +00:00
parent af8e32060d
commit 1f3439fc5d
1 changed files with 46 additions and 1 deletions
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47
tests/ia64-test-nat-asm.S
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@ -191,5 +191,50 @@ save_static_to_mem:
mov rp = loc1
mov ar.unat = loc2 // restore ar.unat
br.ret.sptk.many rp
.endp save_static_to_mem
/* Save r4-r7 to various scratch registers, then trigger
a segfault. */
.global save_static_to_scratch
.proc save_static_to_scratch
save_static_to_scratch:
.prologue
.spillreg r4, r16
mov r16 = r4 // save r4 in r16
tnat.nz p6, p7 = r5;;
.spillreg.p p6, r5, f31
(p6) setf.sig f31 = r5 // save r5 in f31 if it's a NaT
.spillreg.p p7, r5, b6
(p7) mov b6 = r5 // in b6 if it not
.spillreg r6, f32
setf.sig f32 = r6 // save r6 in f32 (fph partition)
.spillsp r7, 0
st8.spill [sp] = r7 // save r7 in the scratch stack space
.body
LOAD_VAL(r4)
LOAD_VAL(r5)
LOAD_VAL(r6)
LOAD_VAL(r7)
/* Now force a SIGSEGV. Make sure the ld8 is at the beginning of a
bundle, so the signal-handler can skip over it simply by
incrementing the IP. */
{
.mmi
ld8 r2 = [r0]
nop.m 0
nop.i 0 ;;
}
mov r4 = r16
.pred.rel.mutex p6, p7
(p6) getf.sig r5 = f31
(p7) mov r5 = b6
getf.sig r6 = f32
ld8.fill r7 = [sp]
br.ret.sptk.many rp
.endp save_static_to_scratch