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There are a couple more difficulties with the MASK/UNMASK MACROS.
These ones work better.
#define HAL_INTERRUPT_MASK( _vector_
) \
CYG_MACRO_START
\
if( (_vector_) <= CYGNUM_HAL_MAX_STATUS_VEC
) \
{
\
asm volatile
( \
"mfc0
$3,$12\n" \
"la
$2,0x00000400\n" \
"sllv
$2,$2,%0\n" \
"nor
$2,$2,$0\n" \
"and
$3,$3,$2\n" \
"mtc0
$3,$12\n" \
"nop; nop;
nop\n" \
: \
:
"r"(_vector_) \
: "$2",
"$3" \
); \
}
\
else
\
{
\
/* int 6:9 are masked in the Interrupt Control register
*/ \
asm volatile
( \
"cfc0
$3,$20\n" \
"la
$2,0x00000004\n" \
"sllv
$2,$2,%0\n" \
"nor
$2,$2,$0\n" \
"and
$3,$3,$2\n" \
"ctc0
$3,$20\n" \
"nop; nop;
nop\n" \
: \
: "r"((_vector_) ) \
: "$2",
"$3" \
); \
}
\
CYG_MACRO_END
#define HAL_INTERRUPT_UNMASK( _vector_
) \
CYG_MACRO_START
\
if( (_vector_) <= CYGNUM_HAL_MAX_STATUS_VEC
) \
{
\
asm volatile
( \
"mfc0
$3,$12\n" \
"la
$2,0x00000400\n" \
"sllv
$2,$2,%0\n" \
"or
$3,$3,$2\n" \
"mtc0
$3,$12\n" \
"nop; nop;
nop\n" \
: \
:
"r"(_vector_) \
: "$2",
"$3" \
); \
}
\
else \
{
\
/* int 6:9 are masked in the Interrupt Control register
*/ \
asm volatile
( \
"cfc0
$3,$20\n" \
"la
$2,0x00000004\n" \
"sllv
$2,$2,%0\n" \
"or
$3,$3,$2\n" \
"ctc0
$3,$20\n" \
"nop; nop;
nop\n" \
: \
: "r"((_vector_)
) \
: "$2",
"$3" \
); \
}
\
CYG_MACRO_END
--
Chris Morrow YottaYotta Inc. email: cmorrow@yottayotta.com
phone: (780) 989 6814 web: http: //www.yottayotta.com
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