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lvzhengyang
riscv-gcc-1
Commits
8e56feed
Commit
8e56feed
authored
May 23, 1996
by
Jim Wilson
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Construct exception masks at compile time
instead of or'ing in bits at run time. From-SVN: r12085
parent
118751b1
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1 changed file
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10 additions
and
20 deletions
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gcc/config/m68k/lb1sf68.asm
+10
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gcc/config/m68k/lb1sf68.asm
View file @
8e56feed
...
...
@@ -464,8 +464,7 @@ ROUND_TO_MINUS = 3 | round result towards minus infinity
Ld
$
den
:
|
Return
and
signal
a
denormalized
number
orl
d7
,
d0
movew
IMM
(
UNDERFLOW
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
UNDERFLOW
),
d7
movew
IMM
(
DOUBLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
@@ -475,8 +474,7 @@ Ld$overflow:
movel
IMM
(
0x7ff00000
),
d0
movel
IMM
(
0
),
d1
orl
d7
,
d0
movew
IMM
(
OVERFLOW
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
OVERFLOW
),
d7
movew
IMM
(
DOUBLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
@@ -484,8 +482,7 @@ Ld$underflow:
|
Return
0
and
set
the
exception
flags
movel
IMM
(
0
),
d0
movel
d0
,
d1
movew
IMM
(
UNDERFLOW
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
UNDERFLOW
),
d7
movew
IMM
(
DOUBLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
@@ -493,8 +490,7 @@ Ld$inop:
|
Return
a
quiet
NaN
and
set
the
exception
flags
movel
IMM
(
QUIET_NaN
),
d0
movel
d0
,
d1
movew
IMM
(
INVALID_OPERATION
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
INVALID_OPERATION
),
d7
movew
IMM
(
DOUBLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
@@ -503,8 +499,7 @@ Ld$div$0:
movel
IMM
(
0x7ff00000
),
d0
movel
IMM
(
0
),
d1
orl
d7
,
d0
movew
IMM
(
DIVIDE_BY_ZERO
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
DIVIDE_BY_ZERO
),
d7
movew
IMM
(
DOUBLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
@@ -1719,8 +1714,7 @@ ROUND_TO_MINUS = 3 | round result towards minus infinity
Lf
$
den
:
|
Return
and
signal
a
denormalized
number
orl
d7
,
d0
movew
IMM
(
UNDERFLOW
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
UNDERFLOW
),
d7
movew
IMM
(
SINGLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
@@ -1729,24 +1723,21 @@ Lf$overflow:
|
Return
a
properly
signed
INFINITY
and
set
the
exception
flags
movel
IMM
(
INFINITY
),
d0
orl
d7
,
d0
movew
IMM
(
OVERFLOW
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
OVERFLOW
),
d7
movew
IMM
(
SINGLE_FLOAT
),
d6
jmp
$
_exception_handler
Lf
$
underflow
:
|
Return
0
and
set
the
exception
flags
movel
IMM
(
0
),
d0
movew
IMM
(
UNDERFLOW
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
UNDERFLOW
),
d7
movew
IMM
(
SINGLE_FLOAT
),
d6
jmp
$
_exception_handler
Lf
$
inop
:
|
Return
a
quiet
NaN
and
set
the
exception
flags
movel
IMM
(
QUIET_NaN
),
d0
movew
IMM
(
INVALID_OPERATION
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
INVALID_OPERATION
),
d7
movew
IMM
(
SINGLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
@@ -1754,8 +1745,7 @@ Lf$div$0:
|
Return
a
properly
signed
INFINITY
and
set
the
exception
flags
movel
IMM
(
INFINITY
),
d0
orl
d7
,
d0
movew
IMM
(
DIVIDE_BY_ZERO
),
d7
orw
IMM
(
INEXACT_RESULT
),
d7
movew
IMM
(
INEXACT_RESULT
+
DIVIDE_BY_ZERO
),
d7
movew
IMM
(
SINGLE_FLOAT
),
d6
jmp
$
_exception_handler
...
...
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