55 lines
761 B
ArmAsm
55 lines
761 B
ArmAsm
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.file "frnd.s"
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.section .text
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.proc _frnd#
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.align 32
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.global _frnd#
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.align 32
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_frnd:
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// CONVERT BEGINS HERE WITH ARGUMENT IN f8
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{ .mmi
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// save the old fpsr in r2
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mov r2=ar40;;
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mov r3=r2
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nop.i 0
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} { .mlx
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nop.m 0
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movl r8=0x02000;;
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} { .mmi
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// clear sf0.V bit in r3
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andcm r3=r3,r8;;
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// set traps.PDV
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or r3=0x23,r3
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nop.i 0;;
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} { .mib
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mov ar40=r3
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nop.i 0
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nop.b 0;;
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} { .mfi
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nop.m 0
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fcvt.fx.s0 f7=f8
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nop.i 0;;
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} { .mmi
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mov r3=ar40;;
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nop.m 0
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// examine the sf0.V bit (p6 = 1 if sf0.V set)
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tbit.z p6,p7=r3,0x0d;;
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} { .mfb
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nop.m 0
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(p6) fcvt.xf f8=f7
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nop.b 0;;
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}
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// CONVERT ENDS HERE WITH RESULT IN f8
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done:
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{ .mmb
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mov ar40=r2
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// store result
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nop.m 0
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// return
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br.ret.sptk b0;;
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}
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.endp _frnd
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