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from __future__ import print_function
import re
import sys
from . import common
if sys.version_info[0] > 2:
class string:
expandtabs = str.expandtabs
else:
import string
# RegEx: this is where the magic happens.
##### Assembly parser
ASM_FUNCTION_X86_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*(@"?(?P=func)"?| -- Begin function (?P=func))\n(?:\s*\.?Lfunc_begin[^:\n]*:\n)?'
r'(?:\.L[^$]+\$local:\n)?' # drop .L<func>$local:
r'(?:[ \t]+.cfi_startproc\n|.seh_proc[^\n]+\n)?' # drop optional cfi
r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
r'^\s*(?:[^:\n]+?:\s*\n\s*\.size|\.cfi_endproc|\.globl|\.comm|\.(?:sub)?section|#+ -- End function)',
flags=(re.M | re.S))
ASM_FUNCTION_ARM_RE = re.compile(
r'^(?P<func>[0-9a-zA-Z_]+):\n' # f: (name of function)
r'\s+\.fnstart\n' # .fnstart
r'(?P<body>.*?)\n' # (body of the function)
r'.Lfunc_end[0-9]+:', # .Lfunc_end0: or # -- End function
flags=(re.M | re.S))
ASM_FUNCTION_AARCH64_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*\/\/[ \t]*@"?(?P=func)"?( (Function|Tail Call))?\n'
r'(?:[ \t]+.cfi_startproc\n)?' # drop optional cfi noise
r'(?P<body>.*?)\n'
# This list is incomplete
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_AMDGPU_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*;+[ \t]*@"?(?P=func)"?\n[^:]*?'
r'(?P<body>.*?)\n' # (body of the function)
# This list is incomplete
r'^\s*(\.Lfunc_end[0-9]+:\n|\.section)',
flags=(re.M | re.S))
ASM_FUNCTION_HEXAGON_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*//[ \t]*@"?(?P=func)"?\n[^:]*?'
r'(?P<body>.*?)\n' # (body of the function)
# This list is incomplete
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_M68K_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*;[ \t]*@"?(?P=func)"?\n'
r'(?P<body>.*?)\s*' # (body of the function)
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_MIPS_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@"?(?P=func)"?\n[^:]*?' # f: (name of func)
r'(?:\s*\.?Ltmp[^:\n]*:\n)?[^:]*?' # optional .Ltmp<N> for EH
r'(?:^[ \t]+\.(frame|f?mask|set).*?\n)+' # Mips+LLVM standard asm prologue
r'(?P<body>.*?)\n' # (body of the function)
# Mips+LLVM standard asm epilogue
r'(?:(^[ \t]+\.set[^\n]*?\n)*^[ \t]+\.end.*?\n)'
r'(\$|\.L)func_end[0-9]+:\n', # $func_end0: (mips32 - O32) or
# .Lfunc_end0: (mips64 - NewABI)
flags=(re.M | re.S))
ASM_FUNCTION_MSP430_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*;+[ \t]*@"?(?P=func)"?\n[^:]*?'
r'(?P<body>.*?)\n'
r'(\$|\.L)func_end[0-9]+:\n', # $func_end0:
flags=(re.M | re.S))
ASM_FUNCTION_AVR_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*;+[ \t]*@"?(?P=func)"?\n[^:]*?'
r'(?P<body>.*?)\n'
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_PPC_RE = re.compile(
r'#[ \-\t]*Begin function (?P<func>[^.:]+)\n'
r'.*?'
r'^[_.]?(?P=func):(?:[ \t]*#+[ \t]*@"?(?P=func)"?)?\n'
r'(?:^[^#]*\n)*'
r'(?P<body>.*?)\n'
# This list is incomplete
r'(?:^[ \t]*(?:\.(?:long|quad|v?byte)[ \t]+[^\n]+)\n)*'
r'(?:\.Lfunc_end|L\.\.(?P=func))[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_RISCV_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@"?(?P=func)"?\n'
r'(?:\s*\.?L(?P=func)\$local:\n)?' # optional .L<func>$local: due to -fno-semantic-interposition
r'(?:\s*\.?Lfunc_begin[^:\n]*:\n)?[^:]*?'
r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_LANAI_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*!+[ \t]*@"?(?P=func)"?\n'
r'(?:[ \t]+.cfi_startproc\n)?' # drop optional cfi noise
r'(?P<body>.*?)\s*'
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_SPARC_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*!+[ \t]*@"?(?P=func)"?\n'
r'(?P<body>.*?)\s*'
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_SYSTEMZ_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@"?(?P=func)"?\n'
r'[ \t]+.cfi_startproc\n'
r'(?P<body>.*?)\n'
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_AARCH64_DARWIN_RE = re.compile(
r'^_(?P<func>[^:]+):[ \t]*;[ \t]@"?(?P=func)"?\n'
r'([ \t]*.cfi_startproc\n[\s]*)?'
r'(?P<body>.*?)'
r'([ \t]*.cfi_endproc\n[\s]*)?'
r'^[ \t]*;[ \t]--[ \t]End[ \t]function',
flags=(re.M | re.S))
ASM_FUNCTION_ARM_DARWIN_RE = re.compile(
r'^[ \t]*\.globl[ \t]*_(?P<func>[^ \t])[ \t]*@[ \t]--[ \t]Begin[ \t]function[ \t]"?(?P=func)"?'
r'(?P<directives>.*?)'
r'^_(?P=func):\n[ \t]*'
r'(?P<body>.*?)'
r'^[ \t]*@[ \t]--[ \t]End[ \t]function',
flags=(re.M | re.S ))
ASM_FUNCTION_ARM_MACHO_RE = re.compile(
r'^_(?P<func>[^:]+):[ \t]*\n'
r'([ \t]*.cfi_startproc\n[ \t]*)?'
r'(?P<body>.*?)\n'
r'[ \t]*\.cfi_endproc\n',
flags=(re.M | re.S))
ASM_FUNCTION_THUMBS_DARWIN_RE = re.compile(
r'^_(?P<func>[^:]+):\n'
r'(?P<body>.*?)\n'
r'[ \t]*\.data_region\n',
flags=(re.M | re.S))
ASM_FUNCTION_THUMB_DARWIN_RE = re.compile(
r'^_(?P<func>[^:]+):\n'
r'(?P<body>.*?)\n'
r'^[ \t]*@[ \t]--[ \t]End[ \t]function',
flags=(re.M | re.S))
ASM_FUNCTION_ARM_IOS_RE = re.compile(
r'^_(?P<func>[^:]+):\n'
r'(?P<body>.*?)'
r'^[ \t]*@[ \t]--[ \t]End[ \t]function',
flags=(re.M | re.S))
ASM_FUNCTION_WASM32_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@"?(?P=func)"?\n'
r'(?P<body>.*?)\n'
r'^\s*(\.Lfunc_end[0-9]+:\n|end_function)',
flags=(re.M | re.S))
ASM_FUNCTION_VE_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
ASM_FUNCTION_CSKY_RE = re.compile(
r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n(?:\s*\.?Lfunc_begin[^:\n]*:\n)?[^:]*?'
r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
r'.Lfunc_end[0-9]+:\n',
flags=(re.M | re.S))
SCRUB_X86_SHUFFLES_RE = (
re.compile(
r'^(\s*\w+) [^#\n]+#+ ((?:[xyz]mm\d+|mem)( \{%k\d+\}( \{z\})?)? = .*)$',
flags=re.M))
SCRUB_X86_SHUFFLES_NO_MEM_RE = (
re.compile(
r'^(\s*\w+) [^#\n]+#+ ((?:[xyz]mm\d+|mem)( \{%k\d+\}( \{z\})?)? = (?!.*(?:mem)).*)$',
flags=re.M))
SCRUB_X86_SPILL_RELOAD_RE = (
re.compile(
r'-?\d+\(%([er])[sb]p\)(.*(?:Spill|Reload))$',
flags=re.M))
SCRUB_X86_SP_RE = re.compile(r'\d+\(%(esp|rsp)\)')
SCRUB_X86_RIP_RE = re.compile(r'[.\w]+\(%rip\)')
SCRUB_X86_LCP_RE = re.compile(r'\.?LCPI[0-9]+_[0-9]+')
SCRUB_X86_RET_RE = re.compile(r'ret[l|q]')
def scrub_asm_x86(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Detect shuffle asm comments and hide the operands in favor of the comments.
if getattr(args, 'no_x86_scrub_mem_shuffle', True):
asm = SCRUB_X86_SHUFFLES_NO_MEM_RE.sub(r'\1 {{.*#+}} \2', asm)
else:
asm = SCRUB_X86_SHUFFLES_RE.sub(r'\1 {{.*#+}} \2', asm)
# Detect stack spills and reloads and hide their exact offset and whether
# they used the stack pointer or frame pointer.
asm = SCRUB_X86_SPILL_RELOAD_RE.sub(r'{{[-0-9]+}}(%\1{{[sb]}}p)\2', asm)
if getattr(args, 'x86_scrub_sp', True):
# Generically match the stack offset of a memory operand.
asm = SCRUB_X86_SP_RE.sub(r'{{[0-9]+}}(%\1)', asm)
if getattr(args, 'x86_scrub_rip', False):
# Generically match a RIP-relative memory operand.
asm = SCRUB_X86_RIP_RE.sub(r'{{.*}}(%rip)', asm)
# Generically match a LCP symbol.
asm = SCRUB_X86_LCP_RE.sub(r'{{\.?LCPI[0-9]+_[0-9]+}}', asm)
if getattr(args, 'extra_scrub', False):
# Avoid generating different checks for 32- and 64-bit because of 'retl' vs 'retq'.
asm = SCRUB_X86_RET_RE.sub(r'ret{{[l|q]}}', asm)
# Strip kill operands inserted into the asm.
asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_amdgpu(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_arm_eabi(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip kill operands inserted into the asm.
asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_hexagon(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_powerpc(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip unimportant comments, but leave the token '#' in place.
asm = common.SCRUB_LOOP_COMMENT_RE.sub(r'#', asm)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
# Strip the tailing token '#', except the line only has token '#'.
asm = common.SCRUB_TAILING_COMMENT_TOKEN_RE.sub(r'', asm)
return asm
def scrub_asm_m68k(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_mips(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_msp430(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_avr(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_riscv(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_lanai(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_sparc(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_systemz(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_wasm32(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_ve(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def scrub_asm_csky(asm, args):
# Scrub runs of whitespace out of the assembly, but leave the leading
# whitespace in place.
asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
# Expand the tabs used for indentation.
asm = string.expandtabs(asm, 2)
# Strip kill operands inserted into the asm.
asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm)
# Strip trailing whitespace.
asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
return asm
def get_triple_from_march(march):
triples = {
'amdgcn': 'amdgcn',
'r600': 'r600',
'mips': 'mips',
'sparc': 'sparc',
'hexagon': 'hexagon',
've': 've',
}
for prefix, triple in triples.items():
if march.startswith(prefix):
return triple
print("Cannot find a triple. Assume 'x86'", file=sys.stderr)
return 'x86'
def get_run_handler(triple):
target_handlers = {
'i686': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
'x86': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
'i386': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
'arm64_32-apple-ios': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
'aarch64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE),
'aarch64-apple-darwin': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
'aarch64-apple-ios': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
'hexagon': (scrub_asm_hexagon, ASM_FUNCTION_HEXAGON_RE),
'r600': (scrub_asm_amdgpu, ASM_FUNCTION_AMDGPU_RE),
'amdgcn': (scrub_asm_amdgpu, ASM_FUNCTION_AMDGPU_RE),
'arm': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
'arm64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE),
'arm64e': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
'arm64-apple-ios': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
'armv7-apple-ios' : (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_IOS_RE),
'armv7-apple-darwin': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_DARWIN_RE),
'thumb': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
'thumb-macho': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_MACHO_RE),
'thumbv5-macho': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_MACHO_RE),
'thumbv7s-apple-darwin' : (scrub_asm_arm_eabi, ASM_FUNCTION_THUMBS_DARWIN_RE),
'thumbv7-apple-darwin' : (scrub_asm_arm_eabi, ASM_FUNCTION_THUMB_DARWIN_RE),
'thumbv7-apple-ios' : (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_IOS_RE),
'm68k': (scrub_asm_m68k, ASM_FUNCTION_M68K_RE),
'mips': (scrub_asm_mips, ASM_FUNCTION_MIPS_RE),
'msp430': (scrub_asm_msp430, ASM_FUNCTION_MSP430_RE),
'avr': (scrub_asm_avr, ASM_FUNCTION_AVR_RE),
'ppc32': (scrub_asm_powerpc, ASM_FUNCTION_PPC_RE),
'powerpc': (scrub_asm_powerpc, ASM_FUNCTION_PPC_RE),
'riscv32': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
'riscv64': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
'lanai': (scrub_asm_lanai, ASM_FUNCTION_LANAI_RE),
'sparc': (scrub_asm_sparc, ASM_FUNCTION_SPARC_RE),
's390x': (scrub_asm_systemz, ASM_FUNCTION_SYSTEMZ_RE),
'wasm32': (scrub_asm_wasm32, ASM_FUNCTION_WASM32_RE),
've': (scrub_asm_ve, ASM_FUNCTION_VE_RE),
'csky': (scrub_asm_csky, ASM_FUNCTION_CSKY_RE),
}
handler = None
best_prefix = ''
for prefix, s in target_handlers.items():
if triple.startswith(prefix) and len(prefix) > len(best_prefix):
handler = s
best_prefix = prefix
if handler is None:
raise KeyError('Triple %r is not supported' % (triple))
return handler
##### Generator of assembly CHECK lines
def add_asm_checks(output_lines, comment_marker, prefix_list, func_dict,
func_name, is_filtered):
# Label format is based on ASM string.
check_label_format = '{} %s-LABEL: %s%s:'.format(comment_marker)
global_vars_seen_dict = {}
common.add_checks(output_lines, comment_marker, prefix_list, func_dict,
func_name, check_label_format, True, False,
global_vars_seen_dict, is_filtered = is_filtered)
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