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ARM: Implement the vstr instruction.

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This commit is contained in:
Gabe Black
2010-06-02 12:58:12 -05:00
parent f64c8bafd2
commit 6106bd18cd
1 changed files with 35 additions and 11 deletions
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46
src/arch/arm/isa/insts/str.isa
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@@ -78,7 +78,8 @@ let {{
exec_output += newExec
def buildImmStore(mnem, post, add, writeback, \
size=4, sign=False, user=False, strex=False):
size=4, sign=False, user=False, \
strex=False, vstr=False):
name = mnem
Name = storeImmClassName(post, add, writeback, \
size, sign, user)
@@ -94,8 +95,14 @@ let {{
eaCode += offset
eaCode += ";"
accCode = "Mem%(suffix)s = cSwap(Dest%(suffix)s, ((CPSR)Cpsr).e);" % \
{ "suffix" : buildMemSuffix(sign, size) }
if vstr:
accCode = '''
Mem%(suffix)s = cSwap(FpDest.uw, ((CPSR)Cpsr).e);
''' % { "suffix" : buildMemSuffix(sign, size) }
else:
accCode = '''
Mem%(suffix)s = cSwap(Dest%(suffix)s, ((CPSR)Cpsr).e);
''' % { "suffix" : buildMemSuffix(sign, size) }
if writeback:
accCode += "Base = Base %s;\n" % offset
@@ -107,7 +114,10 @@ let {{
postAccCode = "Result = !writeResult;"
execTemplateBase = 'StoreEx'
else:
memFlags.append("ArmISA::TLB::AllowUnaligned")
if vstr:
Name = "%s_%s" % (mnem.upper(), Name)
else:
memFlags.append("ArmISA::TLB::AllowUnaligned")
base = buildMemBase("MemoryImm", post, writeback)
postAccCode = ""
execTemplateBase = 'Store'
@@ -179,7 +189,8 @@ let {{
"ArmISA::TLB::AllowUnaligned", \
"%d" % (size - 1)], [], base)
def buildDoubleImmStore(mnem, post, add, writeback, strex=False):
def buildDoubleImmStore(mnem, post, add, writeback, \
strex=False, vstr=False):
name = mnem
Name = storeDoubleImmClassName(post, add, writeback)
@@ -194,11 +205,18 @@ let {{
eaCode += offset
eaCode += ";"
accCode = '''
CPSR cpsr = Cpsr;
Mem.ud = (uint64_t)cSwap(Dest.uw, cpsr.e) |
((uint64_t)cSwap(Dest2.uw, cpsr.e) << 32);
'''
if vstr:
accCode = '''
uint64_t swappedMem = (uint64_t)FpDest.uw |
((uint64_t)FpDest2.uw << 32);
Mem.ud = cSwap(swappedMem, ((CPSR)Cpsr).e);
'''
else:
accCode = '''
CPSR cpsr = Cpsr;
Mem.ud = (uint64_t)cSwap(Dest.uw, cpsr.e) |
((uint64_t)cSwap(Dest2.uw, cpsr.e) << 32);
'''
if writeback:
accCode += "Base = Base %s;\n" % offset
@@ -206,12 +224,13 @@ let {{
"ArmISA::TLB::AlignWord"]
if strex:
memFlags.append("Request::LLSC")
Name = "%s_%s" % (mnem.upper(), Name)
base = buildMemBase("MemoryExDImm", post, writeback)
postAccCode = "Result = !writeResult;"
else:
base = buildMemBase("MemoryDImm", post, writeback)
postAccCode = ""
if vstr or strex:
Name = "%s_%s" % (mnem.upper(), Name)
emitStore(name, Name, True, eaCode, accCode, postAccCode, \
memFlags, [], base, double=True, strex=strex)
@@ -300,4 +319,9 @@ let {{
buildImmStore("strexh", False, True, False, size=2, strex=True)
buildImmStore("strexb", False, True, False, size=1, strex=True)
buildDoubleImmStore("strexd", False, True, False, strex=True)
buildImmStore("vstr", False, True, False, size=4, vstr=True)
buildImmStore("vstr", False, False, False, size=4, vstr=True)
buildDoubleImmStore("vstr", False, True, False, vstr=True)
buildDoubleImmStore("vstr", False, False, False, vstr=True)
}};