30 lines
842 B
ArmAsm
30 lines
842 B
ArmAsm
.sect .text; .sect .rom; .sect .data; .sect .bss; .sect .text
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.define .strlb
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! $Id$
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! revised version by CHL
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! Store the value that is on the stack in fp.
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! Compute ap.
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.strlb:
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movl (sp)+,r3
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movl (sp)+,fp
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pushl r3
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movl $20,ap ! Compute argumentbase from local base.
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! Distance is 5 longwords + the number of
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! registers saved.
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movl 4(fp),r3 ! mask for saved registers
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movl $16,r2 ! position of first bit to test
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I4:
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subl3 r2,$28,r1 ! remaining size of mask
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ffs r2,r1,r3,r2 ! find first bit set in mask
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beql I5 ! no more bits set
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addl2 $4,ap ! for each saved register
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incl r2
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jbr I4
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I5:
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extzv $14,$2,6(fp),r3 ! Now find out about the stack alignment
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! between fp and ap
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addl2 r3,ap ! add alignment
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addl2 fp,ap
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rsb
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