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Fix ins/ext cornercase.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2627 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-04-07 01:09:17 +00:00
parent d85fb99bf7
commit f757d6ff29
1 changed files with 4 additions and 4 deletions
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8
target-mips/op.c
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@ -2232,7 +2232,7 @@ void op_ext(void)
unsigned int pos = PARAM1; unsigned int pos = PARAM1;
unsigned int size = PARAM2; unsigned int size = PARAM2;
T0 = ((uint32_t)T1 >> pos) & ((1 << size) - 1); T0 = ((uint32_t)T1 >> pos) & ((size < 32) ? ((1 << size) - 1) : ~0);
RETURN(); RETURN();
} }
@ -2240,7 +2240,7 @@ void op_ins(void)
{ {
unsigned int pos = PARAM1; unsigned int pos = PARAM1;
unsigned int size = PARAM2; unsigned int size = PARAM2;
target_ulong mask = ((1 << size) - 1) << pos; target_ulong mask = ((size < 32) ? ((1 << size) - 1) : ~0) << pos;
T0 = (T2 & ~mask) | (((uint32_t)T1 << pos) & mask); T0 = (T2 & ~mask) | (((uint32_t)T1 << pos) & mask);
RETURN(); RETURN();
@ -2258,7 +2258,7 @@ void op_dext(void)
unsigned int pos = PARAM1; unsigned int pos = PARAM1;
unsigned int size = PARAM2; unsigned int size = PARAM2;
T0 = (T1 >> pos) & ((1 << size) - 1); T0 = (T1 >> pos) & ((size < 32) ? ((1 << size) - 1) : ~0);
RETURN(); RETURN();
} }
@ -2266,7 +2266,7 @@ void op_dins(void)
{ {
unsigned int pos = PARAM1; unsigned int pos = PARAM1;
unsigned int size = PARAM2; unsigned int size = PARAM2;
target_ulong mask = ((1 << size) - 1) << pos; target_ulong mask = ((size < 32) ? ((1 << size) - 1) : ~0) << pos;
T0 = (T2 & ~mask) | ((T1 << pos) & mask); T0 = (T2 & ~mask) | ((T1 << pos) & mask);
RETURN(); RETURN();