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Hexagon (target/hexagon) Remove next_PC from runtime state

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The imported files don't properly mark all CONDEXEC instructions, so
we add some logic to hex_common.py to add the attribute.

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-7-tsimpson@quicinc.com>
This commit is contained in:
Taylor Simpson 2022-11-08 08:29:01 -08:00
parent 40085901db
commit 613653e500
10 changed files with 65 additions and 12 deletions
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21
target/hexagon/hex_common.py
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@ -66,6 +66,19 @@ def add_qemu_macro_attrib(name, attrib):
macros[name].attribs.add(attrib)
immextre = re.compile(r'f(MUST_)?IMMEXT[(]([UuSsRr])')
def is_cond_jump(tag):
if tag == 'J2_rte':
return False
if ('A_HWLOOP0_END' in attribdict[tag] or
'A_HWLOOP1_END' in attribdict[tag]):
return False
return \
re.compile(r"(if.*fBRANCH)|(if.*fJUMPR)").search(semdict[tag]) != None
def is_cond_call(tag):
return re.compile(r"(if.*fCALL)").search(semdict[tag]) != None
def calculate_attribs():
add_qemu_macro_attrib('fREAD_PC', 'A_IMPLICIT_READS_PC')
add_qemu_macro_attrib('fTRAP', 'A_IMPLICIT_READS_PC')
@ -96,6 +109,11 @@ def calculate_attribs():
for regtype, regid, toss, numregs in regs:
if regtype == "P" and is_written(regid):
attribdict[tag].add('A_WRITES_PRED_REG')
# Mark conditional jumps and calls
# Not all instructions are properly marked with A_CONDEXEC
for tag in tags:
if is_cond_jump(tag) or is_cond_call(tag):
attribdict[tag].add('A_CONDEXEC')
def SEMANTICS(tag, beh, sem):
#print tag,beh,sem
@ -211,6 +229,9 @@ def need_ea(tag):
def need_PC(tag):
return 'A_IMPLICIT_READS_PC' in attribdict[tag]
def helper_needs_next_PC(tag):
return 'A_CALL' in attribdict[tag]
def need_pkt_has_multi_cof(tag):
return 'A_COF' in attribdict[tag]