1import re 2import sys 3 4from . import common 5 6if sys.version_info[0] > 2: 7 class string: 8 expandtabs = str.expandtabs 9else: 10 import string 11 12# RegEx: this is where the magic happens. 13 14##### Assembly parser 15 16ASM_FUNCTION_X86_RE = re.compile( 17 r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?' 18 r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*' 19 r'^\s*(?:[^:\n]+?:\s*\n\s*\.size|\.cfi_endproc|\.globl|\.comm|\.(?:sub)?section|#+ -- End function)', 20 flags=(re.M | re.S)) 21 22ASM_FUNCTION_ARM_RE = re.compile( 23 r'^(?P<func>[0-9a-zA-Z_]+):\n' # f: (name of function) 24 r'\s+\.fnstart\n' # .fnstart 25 r'(?P<body>.*?)\n' # (body of the function) 26 r'.Lfunc_end[0-9]+:', # .Lfunc_end0: or # -- End function 27 flags=(re.M | re.S)) 28 29ASM_FUNCTION_AARCH64_RE = re.compile( 30 r'^_?(?P<func>[^:]+):[ \t]*\/\/[ \t]*@(?P=func)\n' 31 r'(?:[ \t]+.cfi_startproc\n)?' # drop optional cfi noise 32 r'(?P<body>.*?)\n' 33 # This list is incomplete 34 r'.Lfunc_end[0-9]+:\n', 35 flags=(re.M | re.S)) 36 37ASM_FUNCTION_MIPS_RE = re.compile( 38 r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?' # f: (name of func) 39 r'(?:^[ \t]+\.(frame|f?mask|set).*?\n)+' # Mips+LLVM standard asm prologue 40 r'(?P<body>.*?)\n' # (body of the function) 41 r'(?:^[ \t]+\.(set|end).*?\n)+' # Mips+LLVM standard asm epilogue 42 r'(\$|\.L)func_end[0-9]+:\n', # $func_end0: (mips32 - O32) or 43 # .Lfunc_end0: (mips64 - NewABI) 44 flags=(re.M | re.S)) 45 46ASM_FUNCTION_PPC_RE = re.compile( 47 r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n' 48 r'\.Lfunc_begin[0-9]+:\n' 49 r'(?:[ \t]+.cfi_startproc\n)?' 50 r'(?:\.Lfunc_[gl]ep[0-9]+:\n(?:[ \t]+.*?\n)*)*' 51 r'(?P<body>.*?)\n' 52 # This list is incomplete 53 r'(?:^[ \t]*(?:\.long[ \t]+[^\n]+|\.quad[ \t]+[^\n]+)\n)*' 54 r'.Lfunc_end[0-9]+:\n', 55 flags=(re.M | re.S)) 56 57ASM_FUNCTION_RISCV_RE = re.compile( 58 r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?' 59 r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*' 60 r'.Lfunc_end[0-9]+:\n', 61 flags=(re.M | re.S)) 62 63ASM_FUNCTION_SPARC_RE = re.compile( 64 r'^_?(?P<func>[^:]+):[ \t]*!+[ \t]*@(?P=func)\n' 65 r'(?P<body>.*?)\s*' 66 r'.Lfunc_end[0-9]+:\n', 67 flags=(re.M | re.S)) 68 69ASM_FUNCTION_SYSTEMZ_RE = re.compile( 70 r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n' 71 r'[ \t]+.cfi_startproc\n' 72 r'(?P<body>.*?)\n' 73 r'.Lfunc_end[0-9]+:\n', 74 flags=(re.M | re.S)) 75 76 77SCRUB_LOOP_COMMENT_RE = re.compile( 78 r'# =>This Inner Loop Header:.*|# in Loop:.*', flags=re.M) 79 80SCRUB_X86_SHUFFLES_RE = ( 81 re.compile( 82 r'^(\s*\w+) [^#\n]+#+ ((?:[xyz]mm\d+|mem)( \{%k\d+\}( \{z\})?)? = .*)$', 83 flags=re.M)) 84SCRUB_X86_SPILL_RELOAD_RE = ( 85 re.compile( 86 r'-?\d+\(%([er])[sb]p\)(.*(?:Spill|Reload))$', 87 flags=re.M)) 88SCRUB_X86_SP_RE = re.compile(r'\d+\(%(esp|rsp)\)') 89SCRUB_X86_RIP_RE = re.compile(r'[.\w]+\(%rip\)') 90SCRUB_X86_LCP_RE = re.compile(r'\.LCPI[0-9]+_[0-9]+') 91SCRUB_X86_RET_RE = re.compile(r'ret[l|q]') 92 93def scrub_asm_x86(asm, args): 94 # Scrub runs of whitespace out of the assembly, but leave the leading 95 # whitespace in place. 96 asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm) 97 # Expand the tabs used for indentation. 98 asm = string.expandtabs(asm, 2) 99 # Detect shuffle asm comments and hide the operands in favor of the comments. 100 asm = SCRUB_X86_SHUFFLES_RE.sub(r'\1 {{.*#+}} \2', asm) 101 # Detect stack spills and reloads and hide their exact offset and whether 102 # they used the stack pointer or frame pointer. 103 asm = SCRUB_X86_SPILL_RELOAD_RE.sub(r'{{[-0-9]+}}(%\1{{[sb]}}p)\2', asm) 104 # Generically match the stack offset of a memory operand. 105 asm = SCRUB_X86_SP_RE.sub(r'{{[0-9]+}}(%\1)', asm) 106 # Generically match a RIP-relative memory operand. 107 asm = SCRUB_X86_RIP_RE.sub(r'{{.*}}(%rip)', asm) 108 # Generically match a LCP symbol. 109 asm = SCRUB_X86_LCP_RE.sub(r'{{\.LCPI.*}}', asm) 110 if getattr(args, 'x86_extra_scrub', False): 111 # Avoid generating different checks for 32- and 64-bit because of 'retl' vs 'retq'. 112 asm = SCRUB_X86_RET_RE.sub(r'ret{{[l|q]}}', asm) 113 # Strip kill operands inserted into the asm. 114 asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm) 115 # Strip trailing whitespace. 116 asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm) 117 return asm 118 119def scrub_asm_arm_eabi(asm, args): 120 # Scrub runs of whitespace out of the assembly, but leave the leading 121 # whitespace in place. 122 asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm) 123 # Expand the tabs used for indentation. 124 asm = string.expandtabs(asm, 2) 125 # Strip kill operands inserted into the asm. 126 asm = common.SCRUB_KILL_COMMENT_RE.sub('', asm) 127 # Strip trailing whitespace. 128 asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm) 129 return asm 130 131def scrub_asm_powerpc64(asm, args): 132 # Scrub runs of whitespace out of the assembly, but leave the leading 133 # whitespace in place. 134 asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm) 135 # Expand the tabs used for indentation. 136 asm = string.expandtabs(asm, 2) 137 # Stripe unimportant comments 138 asm = SCRUB_LOOP_COMMENT_RE.sub(r'', asm) 139 # Strip trailing whitespace. 140 asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm) 141 return asm 142 143def scrub_asm_mips(asm, args): 144 # Scrub runs of whitespace out of the assembly, but leave the leading 145 # whitespace in place. 146 asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm) 147 # Expand the tabs used for indentation. 148 asm = string.expandtabs(asm, 2) 149 # Strip trailing whitespace. 150 asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm) 151 return asm 152 153def scrub_asm_riscv(asm, args): 154 # Scrub runs of whitespace out of the assembly, but leave the leading 155 # whitespace in place. 156 asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm) 157 # Expand the tabs used for indentation. 158 asm = string.expandtabs(asm, 2) 159 # Strip trailing whitespace. 160 asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm) 161 return asm 162 163def scrub_asm_sparc(asm, args): 164 # Scrub runs of whitespace out of the assembly, but leave the leading 165 # whitespace in place. 166 asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm) 167 # Expand the tabs used for indentation. 168 asm = string.expandtabs(asm, 2) 169 # Strip trailing whitespace. 170 asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm) 171 return asm 172 173def scrub_asm_systemz(asm, args): 174 # Scrub runs of whitespace out of the assembly, but leave the leading 175 # whitespace in place. 176 asm = common.SCRUB_WHITESPACE_RE.sub(r' ', asm) 177 # Expand the tabs used for indentation. 178 asm = string.expandtabs(asm, 2) 179 # Strip trailing whitespace. 180 asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm) 181 return asm 182 183 184def build_function_body_dictionary_for_triple(args, raw_tool_output, triple, prefixes, func_dict): 185 target_handlers = { 186 'x86_64': (scrub_asm_x86, ASM_FUNCTION_X86_RE), 187 'i686': (scrub_asm_x86, ASM_FUNCTION_X86_RE), 188 'x86': (scrub_asm_x86, ASM_FUNCTION_X86_RE), 189 'i386': (scrub_asm_x86, ASM_FUNCTION_X86_RE), 190 'aarch64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE), 191 'arm-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 192 'thumb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 193 'thumbv6': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 194 'thumbv6-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 195 'thumbv6t2': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 196 'thumbv6t2-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 197 'thumbv6m': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 198 'thumbv6m-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 199 'thumbv7': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 200 'thumbv7-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 201 'thumbv7m': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 202 'thumbv7m-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 203 'thumbv8-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 204 'thumbv8m.base': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 205 'thumbv8m.main': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 206 'armv6': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 207 'armv7': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 208 'armv7-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 209 'armeb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 210 'armv7eb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 211 'armv7eb': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE), 212 'mips': (scrub_asm_mips, ASM_FUNCTION_MIPS_RE), 213 'powerpc64': (scrub_asm_powerpc64, ASM_FUNCTION_PPC_RE), 214 'powerpc64le': (scrub_asm_powerpc64, ASM_FUNCTION_PPC_RE), 215 'riscv32': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE), 216 'riscv64': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE), 217 'sparc': (scrub_asm_sparc, ASM_FUNCTION_SPARC_RE), 218 'sparcv9': (scrub_asm_sparc, ASM_FUNCTION_SPARC_RE), 219 's390x': (scrub_asm_systemz, ASM_FUNCTION_SYSTEMZ_RE), 220 } 221 handlers = None 222 for prefix, s in target_handlers.items(): 223 if triple.startswith(prefix): 224 handlers = s 225 break 226 else: 227 raise KeyError('Triple %r is not supported' % (triple)) 228 229 scrubber, function_re = handlers 230 common.build_function_body_dictionary( 231 function_re, scrubber, [args], raw_tool_output, prefixes, 232 func_dict, args.verbose) 233 234##### Generator of assembly CHECK lines 235 236def add_asm_checks(output_lines, comment_marker, prefix_list, func_dict, func_name): 237 # Label format is based on ASM string. 238 check_label_format = '{} %s-LABEL: %s:'.format(comment_marker) 239 common.add_checks(output_lines, comment_marker, prefix_list, func_dict, func_name, check_label_format, True, False) 240