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| | #ifndef _SOFT_FLOAT
.global feclearexcept
.type feclearexcept,@function
feclearexcept:
andis. 3,3,0x3e00
/* if (r3 & FE_INVALID) r3 |= all_invalid_flags */
andis. 0,3,0x2000
stwu 1,-16(1)
beq- 0,1f
oris 3,3,0x01f8
ori 3,3,0x0700
1:
/*
* note: fpscr contains various fpu status and control
* flags and we dont check if r3 may alter other flags
* than the exception related ones
* ufpscr &= ~r3
*/
mffs 0
stfd 0,8(1)
lwz 9,12(1)
andc 9,9,3
stw 9,12(1)
lfd 0,8(1)
mtfsf 255,0
/* return 0 */
li 3,0
addi 1,1,16
blr
.global feraiseexcept
.type feraiseexcept,@function
feraiseexcept:
andis. 3,3,0x3e00
/* if (r3 & FE_INVALID) r3 |= software_invalid_flag */
andis. 0,3,0x2000
stwu 1,-16(1)
beq- 0,1f
ori 3,3,0x0400
1:
/* fpscr |= r3 */
mffs 0
stfd 0,8(1)
lwz 9,12(1)
or 9,9,3
stw 9,12(1)
lfd 0,8(1)
mtfsf 255,0
/* return 0 */
li 3,0
addi 1,1,16
blr
.global fetestexcept
.type fetestexcept,@function
fetestexcept:
andis. 3,3,0x3e00
/* return r3 & fpscr */
stwu 1,-16(1)
mffs 0
stfd 0,8(1)
lwz 9,12(1)
addi 1,1,16
and 3,3,9
blr
.global fegetround
.type fegetround,@function
fegetround:
/* return fpscr & 3 */
stwu 1,-16(1)
mffs 0
stfd 0,8(1)
lwz 3,12(1)
addi 1,1,16
clrlwi 3,3,30
blr
.global __fesetround
.type __fesetround,@function
__fesetround:
/*
* note: invalid input is not checked, r3 < 4 must hold
* fpscr = (fpscr & -4U) | r3
*/
stwu 1,-16(1)
mffs 0
stfd 0,8(1)
lwz 9,12(1)
clrrwi 9,9,2
or 9,9,3
stw 9,12(1)
lfd 0,8(1)
mtfsf 255,0
/* return 0 */
li 3,0
addi 1,1,16
blr
.global fegetenv
.type fegetenv,@function
fegetenv:
/* *r3 = fpscr */
mffs 0
stfd 0,0(3)
/* return 0 */
li 3,0
blr
.global fesetenv
.type fesetenv,@function
fesetenv:
cmpwi 3, -1
bne 1f
mflr 4
bl 2f
.zero 8
2: mflr 3
mtlr 4
1: /* fpscr = *r3 */
lfd 0,0(3)
mtfsf 255,0
/* return 0 */
li 3,0
blr
#endif
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