diff options
Diffstat (limited to 'src/arch/x86/isa/insts/general_purpose/string/scan_string.py')
-rw-r--r-- | src/arch/x86/isa/insts/general_purpose/string/scan_string.py | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/arch/x86/isa/insts/general_purpose/string/scan_string.py b/src/arch/x86/isa/insts/general_purpose/string/scan_string.py index b038cc00a..5b0e74aad 100644 --- a/src/arch/x86/isa/insts/general_purpose/string/scan_string.py +++ b/src/arch/x86/isa/insts/general_purpose/string/scan_string.py @@ -1,4 +1,4 @@ -# Copyright (c) 2007 The Hewlett-Packard Development Company +# Copyright (c) 2007-2008 The Hewlett-Packard Development Company # All rights reserved. # # Redistribution and use of this software in source and binary forms, @@ -73,34 +73,44 @@ def macroop SCAS_M { # def macroop SCAS_E_M { + and t0, rcx, rcx, flags=(EZF,), dataSize=asz + br label("end"), flags=(CEZF,) + # Find the constant we need to either add or subtract from rdi ruflag t0, 10 movi t2, t2, dsz, flags=(CEZF,), dataSize=asz subi t3, t0, dsz, dataSize=asz mov t2, t2, t3, flags=(nCEZF,), dataSize=asz +topOfLoop: ld t1, es, [1, t0, rdi] sub t0, t1, rax, flags=(OF, SF, ZF, AF, PF, CF) subi rcx, rcx, 1, flags=(EZF,), dataSize=asz add rdi, rdi, t2, dataSize=asz - bri t0, 4, flags=(CSTRZnEZF,) + br label("topOfLoop"), flags=(CSTRZnEZF,) +end: fault "NoFault" }; def macroop SCAS_N_M { + and t0, rcx, rcx, flags=(EZF,), dataSize=asz + br label("end"), flags=(CEZF,) + # Find the constant we need to either add or subtract from rdi ruflag t0, 10 movi t2, t2, dsz, flags=(CEZF,), dataSize=asz subi t3, t0, dsz, dataSize=asz mov t2, t2, t3, flags=(nCEZF,), dataSize=asz +topOfLoop: ld t1, es, [1, t0, rdi] sub t0, t1, rax, flags=(OF, SF, ZF, AF, PF, CF) subi rcx, rcx, 1, flags=(EZF,), dataSize=asz add rdi, rdi, t2, dataSize=asz - bri t0, 4, flags=(CSTRnZnEZF,) + br label("topOfLoop"), flags=(CSTRnZnEZF,) +end: fault "NoFault" }; |