51 lines
1.3 KiB
ArmAsm
51 lines
1.3 KiB
ArmAsm
#################################################################
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# #
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# Copyright 2007 Fidelity Information Services, Inc #
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# #
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# This source code contains the intellectual property #
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# of its copyright holder(s), and is made available #
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# under a license. If you do not know the terms of #
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# the license, please stop and do not read further. #
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# #
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#################################################################
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# PAGE ,132
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.title op_pattern.s
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# .386
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# .MODEL FLAT, C
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.include "g_msf.si"
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.include "linkage.si"
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.INCLUDE "mval_def.si"
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.sbttl op_pattern
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# PAGE +
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.text
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.extern do_patfixed
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.extern do_pattern
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# PUBLIC op_pattern
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ENTRY op_pattern
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movq REG64_RET1,REG64_ARG1
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movq REG64_RET0,REG64_ARG0
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movq mval_a_straddr(REG64_RET1),REG64_ACCUM
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#
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# This is an array of unaligned ints. If the first word is zero, then call do_pattern
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# instead of do_patfixed. Only the low order byte is significant and so it is the only
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# one we need to test. We would do this in assembly because (1) we need the assmembly
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# routine anyway to save the return value into $TEST and (2) it saves an extra level of
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# call linkage at the C level to do the decision here.
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#
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cmpb $0,(REG64_ACCUM) # little endian compare of low order byte
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je l1
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call do_patfixed
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jmp l2
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l1: call do_pattern
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l2: cmpl $0,REG32_ACCUM
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ret
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# op_pattern ENDP
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# END
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