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PR sim/12737

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* iwmmxt.c (WCMPGT): Sign extend 32-bit values before performing a
	signed compare.
	(WMAC): Extend computed result before adding to result register.
	(WRSA): Sign extend 32-bit values before shifting.
This commit is contained in:
Nick Clifton 2011-07-01 12:12:16 +00:00
parent c79d668557
commit 161fc45276
2 changed files with 20 additions and 9 deletions

8
sim/arm/ChangeLog

@ -1,3 +1,11 @@
2011-07-01 Nick Clifton <nickc@redhat.com>
PR sim/12737
* iwmmxt.c (WCMPGT): Sign extend 32-bit values before performing a
signed compare.
(WMAC): Extend computed result before adding to result register.
(WRSA): Sign extend 32-bit values before shifting.
2011-04-16 Mike Frysinger <vapier@gentoo.org>
* wrapper.c (sim_complete_command): New stub function.

21
sim/arm/iwmmxt.c

@ -1744,11 +1744,12 @@ WCMPGT (ARMul_State * state, ARMword instr)
{
signed long a, b;
a = wRWORD (BITS (16, 19), i);
b = wRWORD (BITS (0, 3), i);
a = EXTEND32 (wRWORD (BITS (16, 19), i));
b = EXTEND32 (wRWORD (BITS (0, 3), i));
s = (a > b) ? 0xffffffff : 0;
r |= s << (i * 32);
SIMD32_SET (psr, NBIT32 (s), SIMD_NBIT, i);
SIMD32_SET (psr, ZBIT32 (s), SIMD_ZBIT, i);
}
@ -2128,13 +2129,15 @@ WMAC (ARMword instr)
}
}
if (BIT (20))
wR [BITS (12, 15)] = 0;
if (BIT (21)) /* Signed. */
wR[BITS (12, 15)] += t;
if (BIT (21))
t = EXTEND32 (t);
else
wR [BITS (12, 15)] += t;
t &= 0xffffffff;
if (BIT (20))
wR [BITS (12, 15)] = t;
else
wR[BITS (12, 15)] += t;
wC [wCon] |= WCON_MUP;
@ -2904,7 +2907,7 @@ WSRA (ARMul_State * state, ARMword instr)
t = (wRWORD (BITS (16, 19), i) & 0x80000000) ? 0xffffffff : 0;
else
{
t = wRWORD (BITS (16, 19), i);
t = EXTEND32 (wRWORD (BITS (16, 19), i));
t >>= shift;
}
s = t;