2018-01-30 01:40:05 +01:00
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import re
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2018-02-10 06:01:33 +01:00
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import sys
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2018-01-30 01:40:05 +01:00
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from . import common
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2018-02-10 06:01:33 +01:00
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if sys.version_info[0] > 2:
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class string:
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expandtabs = str.expandtabs
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else:
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import string
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2018-01-30 01:40:05 +01:00
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# RegEx: this is where the magic happens.
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2018-02-10 06:01:33 +01:00
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##### Assembly parser
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2018-01-30 01:40:05 +01:00
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ASM_FUNCTION_X86_RE = re.compile(
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r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?'
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r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
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r'^\s*(?:[^:\n]+?:\s*\n\s*\.size|\.cfi_endproc|\.globl|\.comm|\.(?:sub)?section|#+ -- End function)',
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flags=(re.M | re.S))
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ASM_FUNCTION_ARM_RE = re.compile(
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r'^(?P<func>[0-9a-zA-Z_]+):\n' # f: (name of function)
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r'\s+\.fnstart\n' # .fnstart
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r'(?P<body>.*?)\n' # (body of the function)
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r'.Lfunc_end[0-9]+:', # .Lfunc_end0: or # -- End function
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flags=(re.M | re.S))
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ASM_FUNCTION_AARCH64_RE = re.compile(
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r'^_?(?P<func>[^:]+):[ \t]*\/\/[ \t]*@(?P=func)\n'
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r'[ \t]+.cfi_startproc\n'
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r'(?P<body>.*?)\n'
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# This list is incomplete
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r'.Lfunc_end[0-9]+:\n',
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flags=(re.M | re.S))
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ASM_FUNCTION_MIPS_RE = re.compile(
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r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?' # f: (name of func)
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r'(?:^[ \t]+\.(frame|f?mask|set).*?\n)+' # Mips+LLVM standard asm prologue
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r'(?P<body>.*?)\n' # (body of the function)
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r'(?:^[ \t]+\.(set|end).*?\n)+' # Mips+LLVM standard asm epilogue
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r'(\$|\.L)func_end[0-9]+:\n', # $func_end0: (mips32 - O32) or
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# .Lfunc_end0: (mips64 - NewABI)
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flags=(re.M | re.S))
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ASM_FUNCTION_PPC_RE = re.compile(
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r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
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r'\.Lfunc_begin[0-9]+:\n'
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r'(?:[ \t]+.cfi_startproc\n)?'
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r'(?:\.Lfunc_[gl]ep[0-9]+:\n(?:[ \t]+.*?\n)*)*'
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r'(?P<body>.*?)\n'
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# This list is incomplete
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r'(?:^[ \t]*(?:\.long[ \t]+[^\n]+|\.quad[ \t]+[^\n]+)\n)*'
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r'.Lfunc_end[0-9]+:\n',
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flags=(re.M | re.S))
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ASM_FUNCTION_RISCV_RE = re.compile(
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r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?'
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r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
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r'.Lfunc_end[0-9]+:\n',
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flags=(re.M | re.S))
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ASM_FUNCTION_SYSTEMZ_RE = re.compile(
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r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
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r'[ \t]+.cfi_startproc\n'
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r'(?P<body>.*?)\n'
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r'.Lfunc_end[0-9]+:\n',
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flags=(re.M | re.S))
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SCRUB_LOOP_COMMENT_RE = re.compile(
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r'# =>This Inner Loop Header:.*|# in Loop:.*', flags=re.M)
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SCRUB_X86_SHUFFLES_RE = (
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re.compile(
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r'^(\s*\w+) [^#\n]+#+ ((?:[xyz]mm\d+|mem)( \{%k\d+\}( \{z\})?)? = .*)$',
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flags=re.M))
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SCRUB_X86_SP_RE = re.compile(r'\d+\(%(esp|rsp)\)')
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SCRUB_X86_RIP_RE = re.compile(r'[.\w]+\(%rip\)')
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SCRUB_X86_LCP_RE = re.compile(r'\.LCPI[0-9]+_[0-9]+')
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SCRUB_X86_RET_RE = re.compile(r'ret[l|q]')
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def scrub_asm_x86(asm, args):
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# Scrub runs of whitespace out of the assembly, but leave the leading
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# whitespace in place.
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asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
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# Expand the tabs used for indentation.
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asm = string.expandtabs(asm, 2)
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# Detect shuffle asm comments and hide the operands in favor of the comments.
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asm = SCRUB_X86_SHUFFLES_RE.sub(r'\1 {{.*#+}} \2', asm)
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# Generically match the stack offset of a memory operand.
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asm = SCRUB_X86_SP_RE.sub(r'{{[0-9]+}}(%\1)', asm)
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# Generically match a RIP-relative memory operand.
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asm = SCRUB_X86_RIP_RE.sub(r'{{.*}}(%rip)', asm)
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# Generically match a LCP symbol.
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asm = SCRUB_X86_LCP_RE.sub(r'{{\.LCPI.*}}', asm)
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if args.x86_extra_scrub:
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# Avoid generating different checks for 32- and 64-bit because of 'retl' vs 'retq'.
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asm = SCRUB_X86_RET_RE.sub(r'ret{{[l|q]}}', asm)
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# Strip kill operands inserted into the asm.
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asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm)
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# Strip trailing whitespace.
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asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
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return asm
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def scrub_asm_arm_eabi(asm, args):
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# Scrub runs of whitespace out of the assembly, but leave the leading
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# whitespace in place.
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asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
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# Expand the tabs used for indentation.
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asm = string.expandtabs(asm, 2)
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# Strip kill operands inserted into the asm.
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asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm)
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# Strip trailing whitespace.
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asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
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return asm
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def scrub_asm_powerpc64(asm, args):
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# Scrub runs of whitespace out of the assembly, but leave the leading
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# whitespace in place.
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asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
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# Expand the tabs used for indentation.
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asm = string.expandtabs(asm, 2)
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# Stripe unimportant comments
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asm = SCRUB_LOOP_COMMENT_RE.sub(r'', asm)
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# Strip trailing whitespace.
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asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
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return asm
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def scrub_asm_mips(asm, args):
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# Scrub runs of whitespace out of the assembly, but leave the leading
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# whitespace in place.
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asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
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# Expand the tabs used for indentation.
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asm = string.expandtabs(asm, 2)
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# Strip trailing whitespace.
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asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
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return asm
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def scrub_asm_riscv(asm, args):
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# Scrub runs of whitespace out of the assembly, but leave the leading
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# whitespace in place.
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asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
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# Expand the tabs used for indentation.
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asm = string.expandtabs(asm, 2)
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# Strip trailing whitespace.
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asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
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return asm
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def scrub_asm_systemz(asm, args):
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# Scrub runs of whitespace out of the assembly, but leave the leading
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# whitespace in place.
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asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm)
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# Expand the tabs used for indentation.
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asm = string.expandtabs(asm, 2)
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# Strip trailing whitespace.
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asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
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return asm
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def build_function_body_dictionary_for_triple(args, raw_tool_output, triple, prefixes, func_dict):
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target_handlers = {
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'x86_64': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
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'i686': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
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'x86': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
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'i386': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
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'aarch64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE),
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'arm-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv6': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv6-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv6t2': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv6t2-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv6m': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv6m-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv7': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv7-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv7m': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv7m-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv8-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv8m.base': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'thumbv8m.main': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'armv6': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'armv7': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'armv7-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'armeb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'armv7eb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'armv7eb': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
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'mips': (scrub_asm_mips, ASM_FUNCTION_MIPS_RE),
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'powerpc64': (scrub_asm_powerpc64, ASM_FUNCTION_PPC_RE),
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'powerpc64le': (scrub_asm_powerpc64, ASM_FUNCTION_PPC_RE),
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'riscv32': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
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'riscv64': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
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's390x': (scrub_asm_systemz, ASM_FUNCTION_SYSTEMZ_RE),
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}
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handlers = None
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for prefix, s in target_handlers.items():
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if triple.startswith(prefix):
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handlers = s
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break
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else:
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raise KeyError('Triple %r is not supported' % (triple))
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scrubber, function_re = handlers
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common.build_function_body_dictionary(
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function_re, scrubber, [args], raw_tool_output, prefixes,
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func_dict, args.verbose)
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2018-02-10 06:01:33 +01:00
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##### Generator of assembly CHECK lines
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def add_asm_checks(output_lines, comment_marker, run_list, func_dict, func_name):
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printed_prefixes = []
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for p in run_list:
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checkprefixes = p[0]
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for checkprefix in checkprefixes:
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if checkprefix in printed_prefixes:
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break
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# TODO func_dict[checkprefix] may be None, '' or not exist.
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# Fix the call sites.
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if func_name not in func_dict[checkprefix] or not func_dict[checkprefix][func_name]:
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continue
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# Add some space between different check prefixes.
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if len(printed_prefixes) != 0:
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output_lines.append(comment_marker)
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printed_prefixes.append(checkprefix)
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output_lines.append('%s %s-LABEL: %s:' % (comment_marker, checkprefix, func_name))
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func_body = func_dict[checkprefix][func_name].splitlines()
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output_lines.append('%s %s: %s' % (comment_marker, checkprefix, func_body[0]))
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for func_line in func_body[1:]:
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output_lines.append('%s %s-NEXT: %s' % (comment_marker, checkprefix, func_line))
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# Add space between different check prefixes and the first line of code.
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# output_lines.append(';')
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break
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