#!/usr/bin/perl $TARGETPLATFORM = "i386-unknown-solaris2"; $TargetPlatform = $TARGETPLATFORM; ($Pgm = $0) =~ s|.*/||m; $ifile = $ARGV[0]; $ofile = $ARGV[1]; if ( $TargetPlatform =~ /^i386-/m ) { if ($ARGV[2] eq '') { $StolenX86Regs = 4; } else { $StolenX86Regs = $ARGV[2]; } } &mangle_asm($ifile,$ofile); exit(0); sub init_TARGET_STUFF { #--------------------------------------------------------# if ( $TargetPlatform =~ /^alpha-.*-.*/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\$L?C(\d+):$'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*(\$.*\.\.ng:|\.align\s+\d+|\.(globl|ent)\s+\S+|\#.*|\.(file|loc)\s+\S+\s+\S+|\.text|\.r?data)\n)'; $T_COPY_DIRVS = '^\s*(\$.*\.\.ng:|\#|\.(file|globl|ent|loc))'; $T_DOT_WORD = '\.(long|quad|byte|word)'; $T_DOT_GLOBAL = '^\t\.globl'; $T_HDR_literal = "\.rdata\n\t\.align 3\n"; $T_HDR_misc = "\.text\n\t\.align 3\n"; $T_HDR_data = "\.data\n\t\.align 3\n"; $T_HDR_rodata = "\.rdata\n\t\.align 3\n"; $T_HDR_closure = "\.data\n\t\.align 3\n"; $T_HDR_info = "\.text\n\t\.align 3\n"; $T_HDR_entry = "\.text\n\t\.align 3\n"; $T_HDR_vector = "\.text\n\t\.align 3\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^hppa/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like $T_POST_LBL = ''; $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)'; $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)'; $T_DOT_WORD = '\.(blockz|word|half|byte)'; $T_DOT_GLOBAL = '^\s+\.EXPORT'; $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n"; $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n"; $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n"; $T_HDR_rodata = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n"; $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n"; $T_HDR_info = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n"; $T_HDR_entry = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n"; $T_HDR_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd2|nextstep3|cygwin32|mingw32)$/m ) { # NeXT added but not tested. CaS $T_STABBY = 1; # 1 iff .stab things (usually if a.out format) $T_US = '_'; # _ if symbols have an underscore on the front $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^LC(\d+):$'; $T_POST_LBL = ':'; $T_X86_PRE_LLBL_PAT = 'L'; $T_X86_PRE_LLBL = 'L'; $T_X86_BADJMP = '^\tjmp [^L\*]'; $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s.*|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*|\.lcomm.*)\n)'; $T_COPY_DIRVS = '\.(globl|stab|lcomm)'; $T_DOT_WORD = '\.(long|word|value|byte|space)'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_literal = "\.text\n\t\.align 4\n"; $T_HDR_misc = "\.text\n\t\.align 4,0x90\n"; $T_HDR_data = "\.data\n\t\.align 4\n"; $T_HDR_rodata = "\.text\n\t\.align 4\n"; $T_HDR_closure = "\.data\n\t\.align 4\n"; $T_HDR_info = "\.text\n\t\.align 4\n"; # NB: requires padding $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?) $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|gnu|freebsd|netbsd|openbsd|kfreebsdgnu)$/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = # regexp that says what comes before APP/NO_APP ($TargetPlatform =~ /-(linux|gnu|freebsd|netbsd|openbsd)$/m) ? '#' : '/' ; $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_X86_PRE_LLBL_PAT = '\.L'; $T_X86_PRE_LLBL = '.L'; $T_X86_BADJMP = '^\tjmp\s+[^\.\*]'; $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s.*|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.size\s+\S+\s*,\s*\d+|\.ident.*|\.local.*)\n)'; if ( $TargetPlatform =~ /solaris2/m ) { # newer Solaris linkers are picky about .size information, so # omit it (see #1421) $T_COPY_DIRVS = '^\s*\.(globl|local)'; } else { $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)'; } $T_DOT_WORD = '\.(long|value|word|byte|zero)'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11) $T_HDR_misc = "\.text\n\t\.align 4\n"; $T_HDR_data = "\.data\n\t\.align 4\n"; $T_HDR_rodata = "\.section\t\.rodata\n\t\.align 4\n"; $T_HDR_closure = "\.data\n\t\.align 4\n"; $T_HDR_info = "\.text\n\t\.align 4\n"; $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?) $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^ia64-.*-linux$/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = '#'; $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*\.(global|proc|pred\.safe_across_calls|text|data|section|subsection|align|size|type|ident)\s+.*\n)'; $T_COPY_DIRVS = '\.(global|proc)'; $T_DOT_WORD = '\.(long|value|byte|zero)'; $T_DOT_GLOBAL = '\.global'; $T_HDR_literal = "\.section\t\.rodata\n"; $T_HDR_misc = "\.text\n\t\.align 16\n"; # May contain code; align like 'entry' $T_HDR_data = "\.data\n\t\.align 8\n"; $T_HDR_rodata = "\.section\t\.rodata\n\t\.align 8\n"; $T_HDR_closure = "\.data\n\t\.align 8\n"; $T_HDR_info = "\.text\n\t\.align 8\n"; $T_HDR_entry = "\.text\n\t\.align 16\n"; $T_HDR_vector = "\.text\n\t\.align 8\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^x86_64-.*-(linux|openbsd|freebsd|netbsd)$/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = '#'; $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*\.(globl|text|data|section|align|size|type|ident|local)([ \t].*)?\n)'; $T_COPY_DIRVS = '\.(globl|type|size|local)'; $T_DOT_WORD = '\.(quad|long|value|byte|zero)'; $T_DOT_GLOBAL = '\.global'; $T_HDR_literal16 = "\.section\t\.rodata.cst16\n\t.align 16\n"; $T_HDR_literal = "\.section\t\.rodata\n"; $T_HDR_misc = "\.text\n\t\.align 8\n"; $T_HDR_data = "\.data\n\t\.align 8\n"; $T_HDR_rodata = "\.section\t\.rodata\n\t\.align 8\n"; # the assembler on x86_64/Linux refuses to generate code for # .quad x - y # where x is in the text section and y in the rodata section. # It works if y is in the text section, though. This is probably # going to cause difficulties for PIC, I imagine. # # See Note [x86-64-relative] in includes/InfoTables.h $T_HDR_relrodata= "\.text\n\t\.align 8\n"; $T_HDR_closure = "\.data\n\t\.align 8\n"; $T_HDR_info = "\.text\n\t\.align 8\n"; $T_HDR_entry = "\.text\n\t\.align 8\n"; $T_HDR_vector = "\.text\n\t\.align 8\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/m ) { $T_STABBY = 1; # 1 iff .stab things (usually if a.out format) $T_US = '_'; # _ if symbols have an underscore on the front $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^LC(\d+):$'; $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)'; $T_COPY_DIRVS = '\.(globl|proc|stab)'; $T_DOT_WORD = '\.long'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_literal = "\.text\n\t\.even\n"; $T_HDR_misc = "\.text\n\t\.even\n"; $T_HDR_data = "\.data\n\t\.even\n"; $T_HDR_rodata = "\.text\n\t\.even\n"; $T_HDR_closure = "\.data\n\t\.even\n"; $T_HDR_info = "\.text\n\t\.even\n"; $T_HDR_entry = "\.text\n\t\.even\n"; $T_HDR_vector = "\.text\n\t\.even\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^mips-.*/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)'; $T_COPY_DIRVS = '\.(globl|ent)'; $T_DOT_WORD = '\.word'; $T_DOT_GLOBAL = '^\t\.globl'; $T_HDR_literal = "\t\.rdata\n\t\.align 2\n"; $T_HDR_misc = "\t\.text\n\t\.align 2\n"; $T_HDR_data = "\t\.data\n\t\.align 2\n"; $T_HDR_rodata = "\t\.rdata\n\t\.align 2\n"; $T_HDR_closure = "\t\.data\n\t\.align 2\n"; $T_HDR_info = "\t\.text\n\t\.align 2\n"; $T_HDR_entry = "\t\.text\n\t\.align 2\n"; $T_HDR_vector = "\t\.text\n\t\.align 2\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^powerpc-apple-darwin.*/m ) { # Apple PowerPC Darwin/MacOS X. $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = '_'; # _ if symbols have an underscore on the front $T_PRE_APP = 'DOESNT APPLY'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\LC\d+:'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s.*|\.text|\.data|\.const_data|\.cstring|\.non_lazy_symbol_pointer|\.const|\.static_const|\.literal4|\.literal8|\.static_data|\.globl \S+|\.section .*|\.lcomm.*)\n)'; $T_COPY_DIRVS = '\.(globl|lcomm)'; $T_DOT_WORD = '\.(long|short|byte|fill|space)'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_toc = "\.toc\n"; $T_HDR_literal = "\t\.const\n\t\.align 2\n"; $T_HDR_misc = "\t\.text\n\t\.align 2\n"; $T_HDR_data = "\t\.data\n\t\.align 2\n"; $T_HDR_rodata = "\t\.const\n\t\.align 2\n"; $T_HDR_relrodata= "\t\.const_data\n\t\.align 2\n"; $T_HDR_closure = "\t\.data\n\t\.align 2\n"; $T_HDR_info = "\t\.text\n\t\.align 2\n"; $T_HDR_entry = "\t\.text\n\t\.align 2\n"; $T_HDR_vector = "\t\.text\n\t\.align 2\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^i386-apple-darwin.*/m ) { # Apple i386 Darwin/MacOS X. $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = '_'; # _ if symbols have an underscore on the front $T_PRE_APP = 'DOESNT APPLY'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\LC\d+:'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_X86_PRE_LLBL_PAT = 'L'; $T_X86_PRE_LLBL = 'L'; $T_X86_BADJMP = '^\tjmp [^L\*]'; $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s.*|\.text|\.data|\.const_data|\.cstring|\.non_lazy_symbol_pointer|\.const|\.static_const|\.literal4|\.literal8|\.static_data|\.globl \S+|\.section .*|\.lcomm.*)\n)'; $T_COPY_DIRVS = '\.(globl|lcomm)'; $T_DOT_WORD = '\.(long|short|byte|fill|space)'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_toc = "\.toc\n"; $T_HDR_literal16= "\t\.literal8\n\t\.align 4\n"; $T_HDR_literal = "\t\.const\n\t\.align 4\n"; $T_HDR_misc = "\t\.text\n\t\.align 2\n"; $T_HDR_data = "\t\.data\n\t\.align 2\n"; $T_HDR_rodata = "\t\.const\n\t\.align 2\n"; $T_HDR_relrodata= "\t\.const_data\n\t\.align 2\n"; $T_HDR_closure = "\t\.data\n\t\.align 2\n"; $T_HDR_info = "\t\.text\n\t\.align 2\n"; $T_HDR_entry = "\t\.text\n\t\.align 2\n"; $T_HDR_vector = "\t\.text\n\t\.align 2\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^x86_64-apple-darwin.*/m ) { # Apple amd64 Darwin/MacOS X. $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = '_'; # _ if symbols have an underscore on the front $T_PRE_APP = 'DOESNT APPLY'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\LC\d+:'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*(\.align \d+|\.text|\.data|\.const_data|\.cstring|\.non_lazy_symbol_pointer|\.const|\.static_const|\.literal4|\.literal8|\.static_data|\.globl \S+|\.section .*|\.lcomm.*)\n)'; $T_COPY_DIRVS = '\.(globl|lcomm)'; $T_DOT_WORD = '\.(quad|long|short|byte|fill|space)'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_toc = "\.toc\n"; $T_HDR_literal16= "\t\.literal8\n\t\.align 4\n"; $T_HDR_literal = "\t\.const\n\t\.align 4\n"; $T_HDR_misc = "\t\.text\n\t\.align 2\n"; $T_HDR_data = "\t\.data\n\t\.align 2\n"; $T_HDR_rodata = "\t\.const\n\t\.align 2\n"; $T_HDR_relrodata= "\t\.const_data\n\t\.align 2\n"; $T_HDR_closure = "\t\.data\n\t\.align 2\n"; $T_HDR_info = "\t\.text\n\t\.align 2\n"; $T_HDR_entry = "\t\.text\n\t\.align 2\n"; $T_HDR_vector = "\t\.text\n\t\.align 2\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^powerpc-.*-linux/m ) { # PowerPC Linux $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\.LC\d+:'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,\s*0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.size\s+\S+\s*,\s*\d+|\.ident.*|\.local.*)\n)'; $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)'; $T_DOT_WORD = '\.(long|short|byte|fill|space)'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_toc = "\.toc\n"; $T_HDR_literal = "\t\.section\t.rodata\n\t\.align 2\n"; $T_HDR_misc = "\t\.text\n\t\.align 2\n"; $T_HDR_data = "\t\.data\n\t\.align 2\n"; $T_HDR_rodata = "\t\.section\t.rodata\n\t\.align 2\n"; $T_HDR_closure = "\t\.data\n\t\.align 2\n"; $T_HDR_info = "\t\.text\n\t\.align 2\n"; $T_HDR_entry = "\t\.text\n\t\.align 2\n"; $T_HDR_vector = "\t\.text\n\t\.align 2\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^powerpc64-.*-linux/m ) { # PowerPC 64 Linux $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = '\.'; # _ if symbols have an underscore on the front $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\.LC\d+:'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,\s*0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.size\s+\S+\s*,\s*\d+|\.ident.*|\.local.*)\n)'; $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)'; $T_DOT_WORD = '\.(long|short|byte|fill|space)'; $T_DOT_GLOBAL = '\.globl'; $T_HDR_toc = "\.toc\n"; $T_HDR_literal = "\t\.section\t\".toc\",\"aw\"\n"; $T_HDR_misc = "\t\.text\n\t\.align 2\n"; $T_HDR_data = "\t\.data\n\t\.align 2\n"; $T_HDR_rodata = "\t\.section\t.rodata\n\t\.align 2\n"; $T_HDR_closure = "\t\.data\n\t\.align 2\n"; $T_HDR_info = "\t\.text\n\t\.align 2\n"; $T_HDR_entry = "\t\.text\n\t\.align 2\n"; $T_HDR_vector = "\t\.text\n\t\.align 2\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^sparc-.*-(solaris2|openbsd)/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\s+\.local\s+\S+|\.text|\.data|\.stab.*|\s*\.section.*|\s+\.type.*|\s+\.size.*)\n)'; $T_COPY_DIRVS = '\.(global|local|proc|stab)'; $T_DOT_WORD = '\.(long|word|byte|half|skip|uahalf|uaword)'; $T_DOT_GLOBAL = '^\t\.global'; $T_HDR_literal = "\.text\n\t\.align 8\n"; $T_HDR_misc = "\.text\n\t\.align 4\n"; $T_HDR_data = "\.data\n\t\.align 8\n"; $T_HDR_rodata = "\.text\n\t\.align 4\n"; $T_HDR_closure = "\.data\n\t\.align 4\n"; $T_HDR_info = "\.text\n\t\.align 4\n"; $T_HDR_entry = "\.text\n\t\.align 4\n"; $T_HDR_vector = "\.text\n\t\.align 4\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/m ) { $T_STABBY = 1; # 1 iff .stab things (usually if a.out format) $T_US = '_'; # _ if symbols have an underscore on the front $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP $T_CONST_LBL = '^LC(\d+):$'; $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)'; $T_COPY_DIRVS = '\.(global|proc|stab)'; $T_DOT_WORD = '\.word'; $T_DOT_GLOBAL = '^\t\.global'; $T_HDR_literal = "\.text\n\t\.align 8\n"; $T_HDR_misc = "\.text\n\t\.align 4\n"; $T_HDR_data = "\.data\n\t\.align 8\n"; $T_HDR_rodata = "\.text\n\t\.align 4\n"; $T_HDR_closure = "\.data\n\t\.align 4\n"; $T_HDR_info = "\.text\n\t\.align 4\n"; $T_HDR_entry = "\.text\n\t\.align 4\n"; $T_HDR_vector = "\.text\n\t\.align 4\n"; #--------------------------------------------------------# } elsif ( $TargetPlatform =~ /^sparc-.*-linux/m ) { $T_STABBY = 0; # 1 iff .stab things (usually if a.out format) $T_US = ''; # _ if symbols have an underscore on the front $T_PRE_APP = '#'; # regexp that says what comes before APP/NO_APP # Probably doesn't apply anyway $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like $T_POST_LBL = ':'; $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\s+\.local\s+\S+|\.text|\.data|\.seg|\.stab.*|\s+?\.section.*|\s+\.type.*|\s+\.size.*)\n)'; $T_COPY_DIRVS = '\.(global|local|globl|proc|stab)'; $T_DOT_WORD = '\.(long|word|nword|xword|byte|half|short|skip|uahalf|uaword)'; $T_DOT_GLOBAL = '^\t\.global'; $T_HDR_literal = "\.text\n\t\.align 8\n"; $T_HDR_misc = "\.text\n\t\.align 4\n"; $T_HDR_data = "\.data\n\t\.align 8\n"; $T_HDR_rodata = "\.text\n\t\.align 4\n"; $T_HDR_closure = "\.data\n\t\.align 4\n"; $T_HDR_info = "\.text\n\t\.align 4\n"; $T_HDR_entry = "\.text\n\t\.align 4\n"; $T_HDR_vector = "\.text\n\t\.align 4\n"; #--------------------------------------------------------# } else { print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n"; exit 1; } if($T_HDR_relrodata eq "") { # default values: # relrodata defaults to rodata. $T_HDR_relrodata = $T_HDR_rodata; } if ( 0 ) { print STDERR "T_STABBY: $T_STABBY\n"; print STDERR "T_US: $T_US\n"; print STDERR "T_PRE_APP: $T_PRE_APP\n"; print STDERR "T_CONST_LBL: $T_CONST_LBL\n"; print STDERR "T_POST_LBL: $T_POST_LBL\n"; if ( $TargetPlatform =~ /^i386-/m ) { print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n"; print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n"; print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n"; } print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n"; print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n"; print STDERR "T_DOT_WORD: $T_DOT_WORD\n"; print STDERR "T_HDR_literal: $T_HDR_literal\n"; print STDERR "T_HDR_misc: $T_HDR_misc\n"; print STDERR "T_HDR_data: $T_HDR_data\n"; print STDERR "T_HDR_rodata: $T_HDR_rodata\n"; print STDERR "T_HDR_closure: $T_HDR_closure\n"; print STDERR "T_HDR_info: $T_HDR_info\n"; print STDERR "T_HDR_entry: $T_HDR_entry\n"; print STDERR "T_HDR_vector: $T_HDR_vector\n"; } } sub mangle_asm { local($in_asmf, $out_asmf) = @_; local($i, $c); # ia64-specific information for code chunks my $ia64_locnum; my $ia64_outnum; &init_TARGET_STUFF(); &init_FUNNY_THINGS(); open(INASM, "< $in_asmf") || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n"); open(OUTASM,"> $out_asmf") || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n"); # read whole file, divide into "chunks": # record some info about what we've found... @chk = (); # contents of the chunk $numchks = 0; # number of them @chkcat = (); # what category of thing in each chunk @chksymb = (); # what symbol(base) is defined in this chunk %entrychk = (); # ditto, its entry code %closurechk = (); # ditto, the (static) closure %srtchk = (); # ditto, its SRT (for top-level things) %infochk = (); # given a symbol base, say what chunk its info tbl is in %vectorchk = (); # ditto, return vector table $EXTERN_DECLS = ''; # .globl .text (MIPS only) $i = 0; $chkcat[0] = 'misc'; $chk[0] = ''; while () { tr/\r//d if $TargetPlatform =~ /-mingw32$/m; # In case Perl doesn't convert line endings next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/om; next if $T_STABBY && /^\.stab.*ghc.*c_ID/m; next if /^\t\.def.*endef$/m; next if /${T_PRE_APP}(NO_)?APP/om; next if /^;/m && $TargetPlatform =~ /^hppa/m; next if /(^$|^\t\.file\t|^ # )/m && $TargetPlatform =~ /(^mips-|^ia64-|-mingw32$)/m; if ( $TargetPlatform =~ /^mips-/m && /^\t\.(globl\S+\.text|comm\t)/m ) { $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/m; # Treat .comm variables as data. These show up in two (known) places: # # - the module_registered variable used in the __stginit fragment. # even though these are declared static and initialised, gcc 3.3 # likes to make them .comm, presumably to save space in the # object file. # # - global variables used to pass arguments from C to STG in # a foreign export. (is this still true? --SDM) # } elsif ( /^\t\.comm.*$/m ) { $chk[++$i] = $_; $chkcat[$i] = 'data'; $chksymb[$i] = ''; # Labels ending "_str": these are literal strings. } elsif ( /^${T_US}([A-Za-z0-9_]+)_str${T_POST_LBL}$/m ) { $chk[++$i] = $_; $chkcat[$i] = 'relrodata'; $chksymb[$i] = ''; } elsif ( $TargetPlatform =~ /-darwin/m && (/^\s*\.subsections_via_symbols/m ||/^\s*\.no_dead_strip.*/m)) { # Don't allow Apple's linker to do any dead-stripping of symbols # in this file, because it will mess up info-tables in mangled # code. # The .no_dead_strip directives are actually put there by # the gcc3 "used" attribute on entry points. } elsif ( $TargetPlatform =~ /^.*-apple-darwin.*/m && ( /^\s*\.picsymbol_stub/m || /^\s*\.section __TEXT,__picsymbol_stub\d,.*/m || /^\s*\.section __TEXT,__picsymbolstub\d,.*/m || /^\s*\.symbol_stub/m || /^\s*\.section __TEXT,__symbol_stub\d,.*/m || /^\s*\.section __TEXT,__symbolstub\d,.*/m || /^\s*\.lazy_symbol_pointer/m || /^\s*\.non_lazy_symbol_pointer/m || /^\s*\.section __IMPORT.*/m)) { $chk[++$i] = $_; $chkcat[$i] = 'dyld'; $chksymb[$i] = ''; $dyld_section = $_; } elsif ( $TargetPlatform =~ /^.*-apple-darwin.*/m && $chkcat[$i] eq 'dyld' && /^\s*\.data/m) { # non_lazy_symbol_ptrs that point to local symbols $chk[++$i] = $_; $chkcat[$i] = 'dyld'; $chksymb[$i] = ''; $dyld_section = $_; } elsif ( $TargetPlatform =~ /^.*-apple-darwin.*/m && $chkcat[$i] eq 'dyld' && /^\s*\.align/m) { # non_lazy_symbol_ptrs that point to local symbols $dyld_section .= $_; } elsif ( $TargetPlatform =~ /^.*-apple-darwin.*/m && $chkcat[$i] eq 'dyld' && /^L_.*:$/m) { # non_lazy_symbol_ptrs that point to local symbols $chk[++$i] = $dyld_section . $_; $chkcat[$i] = 'dyld'; $chksymb[$i] = ''; } elsif ( /^\s+/m ) { # most common case first -- a simple line! # duplicated from the bottom $chk[$i] .= $_; } elsif ( /\.\.ng:$/m && $TargetPlatform =~ /^alpha-/m ) { # Alphas: Local labels not to be confused with new chunks $chk[$i] .= $_; # NB: all the rest start with a non-space } elsif ( $TargetPlatform =~ /^mips-/m && /^\d+:/m ) { # a funny-looking very-local label $chk[$i] .= $_; } elsif ( /$T_CONST_LBL/om ) { $chk[++$i] = $_; $chkcat[$i] = 'literal'; $chksymb[$i] = $1; } elsif ( /^${T_US}__stg_split_marker(\d*)${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'splitmarker'; $chksymb[$i] = $1; } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/om ) { $symb = $1; $chk[++$i] = $_; $chkcat[$i] = 'infotbl'; $chksymb[$i] = $symb; die "Info table already? $symb; $i\n" if defined($infochk{$symb}); $infochk{$symb} = $i; } elsif ( /^${T_US}([A-Za-z0-9_]+)_(entry|ret)${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'entry'; $chksymb[$i] = $1; $entrychk{$1} = $i; } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'closure'; $chksymb[$i] = $1; $closurechk{$1} = $i; } elsif ( /^${T_US}([A-Za-z0-9_]+)_srt${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'srt'; $chksymb[$i] = $1; $srtchk{$1} = $i; } elsif ( /^${T_US}([A-Za-z0-9_]+)_ct${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'data'; $chksymb[$i] = ''; } elsif ( /^${T_US}(stg_ap_stack_entries|stg_stack_save_entries|stg_arg_bitmaps)${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'data'; $chksymb[$i] = ''; } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/om ) { ; # toss it } elsif ( /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/om || /^${T_US}.*_CAT${T_POST_LBL}$/om # PROF: _entryname_CAT || /^${T_US}.*_done${T_POST_LBL}$/om # PROF: _module_done || /^${T_US}_module_registered${T_POST_LBL}$/om # PROF: _module_registered ) { $chk[++$i] = $_; $chkcat[$i] = 'data'; $chksymb[$i] = ''; } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/m && $TargetPlatform =~ /^hppa/m ) { $chk[++$i] = $_; $chkcat[$i] = 'bss'; $chksymb[$i] = ''; } elsif ( /^${T_US}([A-Za-z0-9_]+)_cc(s)?${T_POST_LBL}$/om ) { # all CC_ symbols go in the data section... $chk[++$i] = $_; $chkcat[$i] = 'data'; $chksymb[$i] = ''; } elsif ( /^${T_US}([A-Za-z0-9_]+)_hpc${T_POST_LBL}$/om ) { # hpc shares tick boxes across modules $chk[++$i] = $_; $chkcat[$i] = 'data'; $chksymb[$i] = ''; } elsif ( /^${T_US}([A-Za-z0-9_]+)_(alt|dflt)${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'misc'; $chksymb[$i] = ''; } elsif ( /^${T_US}([A-Za-z0-9_]+)_vtbl${T_POST_LBL}$/om ) { $chk[++$i] = $_; $chkcat[$i] = 'vector'; $chksymb[$i] = $1; $vectorchk{$1} = $i; } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/m && /^[A-Za-z0-9][A-Za-z0-9_]*:/m ) { # Some Solaris system headers contain function definitions (as # opposed to mere prototypes), which end up in the .hc file when # a Haskell module foreign imports the corresponding system # functions (most notably stat()). We put them into the text # segment. Note that this currently does not extend to function # names starting with an underscore. # - chak 7/2001 $chk[++$i] = $_; $chkcat[$i] = 'misc'; $chksymb[$i] = $1; } elsif ( $TargetPlatform =~ /^i386-apple-darwin/m && /^(___i686\.get_pc_thunk\.[abcd]x):/om) { # To handle PIC on Darwin/x86, we need to appropriately pass through # the get_pc_thunk functions. The need to be put into a special section # marked as coalesced (otherwise the .weak_definition doesn't work # on Darwin). $chk[++$i] = $_; $chkcat[$i] = 'get_pc_thunk'; $chksymb[$i] = $1; } elsif ( /^${T_US}[A-Za-z0-9_]/om && ( $TargetPlatform !~ /^hppa/m # need to avoid local labels in this case || ! /^L\$\d+$/m ) && ( $TargetPlatform !~ /^powerpc64/m # we need to avoid local labels in this case || ! /^\.L\d+:$/m ) ) { local($thing); chop($thing = $_); $thing =~ s/:$//m; $chk[++$i] = $_; $chksymb[$i] = ''; if ( /^${T_US}stg_.*${T_POST_LBL}$/om # RTS internals || /^${T_US}__stg_.*${T_POST_LBL}$/om # more RTS internals || /^${T_US}__fexp_.*${T_POST_LBL}$/om # foreign export || /^${T_US}.*_slow${T_POST_LBL}$/om # slow entry || /^${T_US}__stginit.*${T_POST_LBL}$/om # __stginit || /^${T_US}.*_btm${T_POST_LBL}$/om # large bitmaps || /^${T_US}.*_fast${T_POST_LBL}$/om # primops || /^_uname:/om # x86/Solaris2 ) { $chkcat[$i] = 'misc'; } elsif ( /^${T_US}.*_srtd${T_POST_LBL}$/om # large bitmaps || /^${T_US}.*_closure_tbl${T_POST_LBL}$/om # closure tables ) { $chkcat[$i] = 'relrodata'; } else { print STDERR "Warning: retaining unknown function \`$thing' in output from C compiler\n"; $chkcat[$i] = 'unknown'; } } elsif ( $TargetPlatform =~ /^powerpc-.*-linux/m && /^\.LCTOC1 = /om ) { # PowerPC Linux's large-model PIC (-fPIC) generates a gobal offset # table "by hand". Be sure to copy it over. # Note that this label and all entries in the table should actually # go into the .got2 section, but it isn't easy to distinguish them # from other constant literals (.LC\d+), so we just put everything # in .rodata. $chk[++$i] = $_; $chkcat[$i] = 'literal'; $chksymb[$i] = 'LCTOC1'; } else { # simple line (duplicated at the top) $chk[$i] .= $_; } } $numchks = $#chk + 1; $chk[$numchks] = ''; # We might push .note.GNU-stack into this $chkcat[$numchks] = 'verbatim'; # If we do, write it straight back out # open CHUNKS, ">/tmp/chunks1" or die "Cannot open /tmp/chunks1: $!\n"; # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] } # close CHUNKS; # the division into chunks is imperfect; # we throw some things over the fence into the next # chunk. # # also, there are things we would like to know # about the whole module before we start spitting # output. local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/m) ? 1 : 0; local($FIRST_TOSSABLE ) = ($TargetPlatform =~ /^(hppa|mips-)/m) ? 1 : 0; # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n"; # Alphas: NB: we start meddling at chunk 1, not chunk 0 # The first ".rdata" is quite magical; as of GCC 2.7.x, it # spits a ".quad 0" in after the very first ".rdata"; we # detect this special case (tossing the ".quad 0")! local($magic_rdata_seen) = 0; # HPPAs, MIPSen: also start medding at chunk 1 for ($i = $FIRST_TOSSABLE; $i < $numchks; $i++) { $c = $chk[$i]; # convenience copy # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c; # toss all prologue stuff; HPPA is pretty weird # (see elsewhere) $c = &hppa_mash_prologue($c) if $TargetPlatform =~ /^hppa-/m; undef $ia64_locnum; undef $ia64_outnum; # be slightly paranoid to make sure there's # nothing surprising in there if ( $c =~ /--- BEGIN ---/m ) { if (($p, $r) = split(/--- BEGIN ---/m, $c)) { # remove junk whitespace around the split point $p =~ s/\t+$//m; $r =~ s/^\s*\n//m; if ($TargetPlatform =~ /^i386-/m) { if ($p =~ /^\tsubl\s+\$(\d+),\s*\%esp\n/m) { if ($1 >= 8192) { die "Error: reserved stack space exceeded!\n Possible workarounds: compile with -fasm, or try another version of gcc.\n" } } # gcc 3.4.3 puts this kind of stuff in the prologue, eg. # when compiling PrimOps.cmm with -optc-O2: # xorl %ecx, %ecx # xorl %edx, %edx # movl %ecx, 16(%esp) # movl %edx, 20(%esp) # but then the code of the function doesn't assume # anything about the contnets of these stack locations. # I think it's to do with the use of inline functions for # PK_Word64() and friends, where gcc is initialising the # contents of the struct to zero, and failing to optimise # away the initialisation. Let's live dangerously and # discard these initalisations. $p =~ s/^\tpushl\s+\%e(di|si|bx)\n//gm; $p =~ s/^\txorl\s+\%e(ax|cx|dx),\s*\%e(ax|cx|dx)\n//gm; $p =~ s/^\tmovl\s+\%e(ax|cx|dx|si|di),\s*\d*\(\%esp\)\n//gm; $p =~ s/^\tmovl\s+\$\d+,\s*\d*\(\%esp\)\n//gm; $p =~ s/^\tsubl\s+\$\d+,\s*\%esp\n//m; $p =~ s/^\tmovl\s+\$\d+,\s*\%eax\n\tcall\s+__alloca\n//m if ($TargetPlatform =~ /^.*-(cygwin32|mingw32)/m); if ($TargetPlatform =~ /^i386-apple-darwin/m) { $pcrel_label = $p; $pcrel_label =~ s/(.|\n)*^(\"?L\d+\$pb\"?):\n(.|\n)*/$2/m or $pcrel_label = ""; $pcrel_reg = $p; $pcrel_reg =~ s/(.|\n)*.*___i686\.get_pc_thunk\.([abcd]x)\n(.|\n)*/$2/m or $pcrel_reg = ""; $p =~ s/^\s+call\s+___i686\.get_pc_thunk\..x//m; $p =~ s/^\"?L\d+\$pb\"?:\n//m; if ($pcrel_reg eq "bx") { # Bad gcc. Goes and uses %ebx, our BaseReg, for PIC. Bad gcc. die "Darwin/x86: -fPIC -via-C doesn't work yet, use -fasm. Aborting." } } } elsif ($TargetPlatform =~ /^x86_64-/m) { $p =~ s/^\tpushq\s+\%r(bx|bp|12|13|14)\n//gm; $p =~ s/^\tmovq\s+\%r(bx|bp|12|13|14),\s*\d*\(\%rsp\)\n//gm; $p =~ s/^\tsubq\s+\$\d+,\s*\%rsp\n//m; } elsif ($TargetPlatform =~ /^ia64-/m) { $p =~ s/^\t\.prologue .*\n//m; # Record the number of local and out registers for register relocation later $p =~ s/^\t\.save ar\.pfs, r\d+\n\talloc r\d+ = ar\.pfs, 0, (\d+), (\d+), 0\n//m; $ia64_locnum = $1; $ia64_outnum = $2; $p =~ s/^\t\.fframe \d+\n\tadds r12 = -\d+, r12\n//m; $p =~ s/^\t\.save rp, r\d+\n\tmov r\d+ = b0\n//m; # Ignore save/restore of these registers; they're taken # care of in StgRun() $p =~ s/^\t\.save ar\.lc, r\d+\n//m; $p =~ s/^\t\.save pr, r\d+\n//m; $p =~ s/^\tmov r\d+ = ar\.lc\n//m; $p =~ s/^\tmov r\d+ = pr\n//m; # Remove .proc and .body directives $p =~ s/^\t\.proc [a-zA-Z0-9_.]+#\n//m; $p =~ s/^\t\.body\n//m; # If there's a label, move it to the body if ($p =~ /^[a-zA-Z0-9.]+:\n/m) { $p = $` . $'; $r = $& . $r; } # Remove floating-point spill instructions. # Only fp registers 2-5 and 16-23 are saved by the runtime. if ($p =~ s/^\tstf\.spill \[r1[4-9]\] = f([2-5]|1[6-9]|2[0-3])(, [0-9]+)?\n//gm) { # Being paranoid, only try to remove these if we saw a # spill operation. $p =~ s/^\tmov r1[4-9] = r12\n//m; $p =~ s/^\tadds r1[4-9] = -[0-9]+, r12\n//gm; $p =~ s/^\t\.save\.f 0x[0-9a-fA-F]\n//gm; $p =~ s/^\t\.save\.gf 0x0, 0x[0-9a-fA-F]+\n//gm; } $p =~ s/^\tnop(?:\.[mifb])?\s+\d+\n//gm; # remove nop instructions $p =~ s/^\t\.(mii|mmi|mfi)\n//gm; # bundling is no longer sensible $p =~ s/^\t;;\n//gm; # discard stops $p =~ s/^\t\/\/.*\n//gm; # gcc inserts timings in // comments # GCC 3.3 saves r1 in the prologue, move this to the body # (Does this register get restored anywhere?) if ($p =~ /^\tmov r\d+ = r1\n/m) { $p = $` . $'; $r = $& . $r; } } elsif ($TargetPlatform =~ /^m68k-/m) { $p =~ s/^\tlink a6,#-?\d.*\n//m; $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//m; # The above showed up in the asm code, # so I added it here. # I hope it's correct. # CaS $p =~ s/^\tmovel d2,sp\@-\n//m; $p =~ s/^\tmovel d5,sp\@-\n//m; # SMmark.* only? $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//m; # SMmark.* only? } elsif ($TargetPlatform =~ /^mips-/m) { # the .frame/.mask/.fmask that we use is the same # as that produced by GCC for miniInterpret; this # gives GDB some chance of figuring out what happened $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n"; $p =~ s/^\t\.(frame).*\n/__FRAME__/gm; $p =~ s/^\t\.(mask|fmask).*\n//gm; $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/m; # 16 + 100 4-byte args $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//m; $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//m; $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//m; $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//m; $p =~ s/__FRAME__/$FRAME/m; } elsif ($TargetPlatform =~ /^powerpc-apple-darwin.*/m) { $pcrel_label = $p; $pcrel_label =~ s/(.|\n)*^(\"?L\d+\$pb\"?):\n(.|\n)*/$2/m or $pcrel_label = ""; $p =~ s/^\tmflr r0\n//m; $p =~ s/^\tbl saveFP # f\d+\n//m; $p =~ s/^\tbl saveFP ; save f\d+-f\d+\n//m; $p =~ s/^\"?L\d+\$pb\"?:\n//m; $p =~ s/^\tstmw r\d+,-\d+\(r1\)\n//m; $p =~ s/^\tstfd f\d+,-\d+\(r1\)\n//gm; $p =~ s/^\tstw r0,\d+\(r1\)\n//gm; $p =~ s/^\tstwu r1,-\d+\(r1\)\n//m; $p =~ s/^\tstw r\d+,-\d+\(r1\)\n//gm; $p =~ s/^\tbcl 20,31,\"?L\d+\$pb\"?\n//m; $p =~ s/^\"?L\d+\$pb\"?:\n//m; $p =~ s/^\tmflr r31\n//m; # This is bad: GCC 3 seems to zero-fill some local variables in the prologue # under some circumstances, only when generating position dependent code. # I have no idea why, and I don't think it is necessary, so let's toss it. $p =~ s/^\tli r\d+,0\n//gm; $p =~ s/^\tstw r\d+,\d+\(r1\)\n//gm; } elsif ($TargetPlatform =~ /^powerpc-.*-linux/m) { $p =~ s/^\tmflr 0\n//m; $p =~ s/^\tstmw \d+,\d+\(1\)\n//m; $p =~ s/^\tstfd \d+,\d+\(1\)\n//gm; $p =~ s/^\tstw r0,8\(1\)\n//m; $p =~ s/^\tstwu 1,-\d+\(1\)\n//m; $p =~ s/^\tstw \d+,\d+\(1\)\n//gm; # GCC's "large-model" PIC (-fPIC) $pcrel_label = $p; $pcrel_label =~ s/(.|\n)*^.LCF(\d+):\n(.|\n)*/$2/m or $pcrel_label = ""; $p =~ s/^\tbcl 20,31,.LCF\d+\n//m; $p =~ s/^.LCF\d+:\n//m; $p =~ s/^\tmflr 30\n//m; $p =~ s/^\tlwz 0,\.LCL\d+-\.LCF\d+\(30\)\n//m; $p =~ s/^\tadd 30,0,30\n//m; # This is bad: GCC 3 seems to zero-fill some local variables in the prologue # under some circumstances, only when generating position dependent code. # I have no idea why, and I don't think it is necessary, so let's toss it. $p =~ s/^\tli \d+,0\n//gm; $p =~ s/^\tstw \d+,\d+\(1\)\n//gm; } elsif ($TargetPlatform =~ /^powerpc64-.*-linux/m) { $p =~ s/^\tmr 31,1\n//m; $p =~ s/^\tmflr 0\n//m; $p =~ s/^\tstmw \d+,\d+\(1\)\n//m; $p =~ s/^\tstfd \d+,-?\d+\(1\)\n//gm; $p =~ s/^\tstd r0,8\(1\)\n//m; $p =~ s/^\tstdu 1,-\d+\(1\)\n//m; $p =~ s/^\tstd \d+,-?\d+\(1\)\n//gm; # This is bad: GCC 3 seems to zero-fill some local variables in the prologue # under some circumstances, only when generating position dependent code. # I have no idea why, and I don't think it is necessary, so let's toss it. $p =~ s/^\tli \d+,0\n//gm; $p =~ s/^\tstd \d+,\d+\(1\)\n//gm; } else { print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n"; } # HWL HACK: dont die, just print a warning #print stderr "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/; die "Prologue junk?: $p\n" if $p =~ /^\s+[^\s\.]/m; # For PIC, we want to keep part of the prologue if ($TargetPlatform =~ /^powerpc-apple-darwin.*/m && $pcrel_label ne "") { # Darwin: load the current instruction pointer into register r31 $p .= "bcl 20,31,$pcrel_label\n"; $p .= "$pcrel_label:\n"; $p .= "\tmflr r31\n"; } elsif ($TargetPlatform =~ /^powerpc-.*-linux/m && $pcrel_label ne "") { # Linux: load the GOT pointer into register 30 $p .= "\tbcl 20,31,.LCF$pcrel_label\n"; $p .= ".LCF$pcrel_label:\n"; $p .= "\tmflr 30\n"; $p .= "\tlwz 0,.LCL$pcrel_label-.LCF$pcrel_label(30)\n"; $p .= "\tadd 30,0,30\n"; } elsif ($TargetPlatform =~ /^i386-apple-darwin.*/m && $pcrel_label ne "") { $p .= "\tcall ___i686.get_pc_thunk.$pcrel_reg\n"; $p .= "$pcrel_label:\n"; } # glue together what's left $c = $p . $r; } } if ( $TargetPlatform =~ /^mips-/m ) { # MIPS: first, this basic sequence may occur "--- END ---" or not $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/m; } # toss all epilogue stuff; again, paranoidly if ( $c =~ /--- END ---/m ) { # Gcc may decide to replicate the function epilogue. We want # to process all epilogues, so we split the function and then # loop here. @fragments = split(/--- END ---/m, $c); $r = shift(@fragments); # Rebuild `c'; processed fragments will be appended to `c' $c = $r; foreach $e (@fragments) { # etail holds code that is after the epilogue in the assembly-code # layout and should not be filtered as part of the epilogue. $etail = ""; if ($TargetPlatform =~ /^i386-/m) { $e =~ s/^\tret\n//m; $e =~ s/^\tpopl\s+\%edi\n//m; $e =~ s/^\tpopl\s+\%esi\n//m; $e =~ s/^\tpopl\s+\%edx\n//m; $e =~ s/^\tpopl\s+\%ecx\n//m; $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//m; $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//m; } elsif ($TargetPlatform =~ /^ia64-/m) { # The epilogue is first split into: # $e, the epilogue code (up to the return instruction) # $etail, non-epilogue code (after the return instruction) # The return instruction is stripped in the process. if (!(($e, $etail) = split(/^\tbr\.ret\.sptk\.many b0\n/m, $e))) { die "Epilogue doesn't seem to have one return instruction: $e\n"; } # Remove 'endp' directive from the tail $etail =~ s/^\t\.endp [a-zA-Z0-9_.]+#\n//m; # If a return value is saved here, discard it $e =~ s/^\tmov r8 = r14\n//m; # Remove floating-point fill instructions. # Only fp registers 2-5 and 16-23 are saved by the runtime. if ($e =~ s/^\tldf\.fill f([2-5]|1[6-9]|2[0-3]) = \[r1[4-9]\](, [0-9]+)?\n//gm) { # Being paranoid, only try to remove this if we saw a fill # operation. $e =~ s/^\tadds r1[4-9] = [0-9]+, r12//gm; } $e =~ s/^\tnop(?:\.[mifb])?\s+\d+\n//gm; # remove nop instructions $e =~ s/^\tmov ar\.pfs = r\d+\n//m; $e =~ s/^\tmov ar\.lc = r\d+\n//m; $e =~ s/^\tmov pr = r\d+, -1\n//m; $e =~ s/^\tmov b0 = r\d+\n//m; $e =~ s/^\t\.restore sp\n\tadds r12 = \d+, r12\n//m; #$e =~ s/^\tbr\.ret\.sptk\.many b0\n//; # already removed $e =~ s/^\t\.(mii|mmi|mfi|mib)\n//gm; # bundling is no longer sensible $e =~ s/^\t;;\n//gm; # discard stops - stop at end of body is sufficient $e =~ s/^\t\/\/.*\n//gm; # gcc inserts timings in // comments } elsif ($TargetPlatform =~ /^m68k-/m) { $e =~ s/^\tunlk a6\n//m; $e =~ s/^\trts\n//m; } elsif ($TargetPlatform =~ /^mips-/m) { $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//m; $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//m; $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//m; $e =~ s/^\tj\t\$31\n//m; } elsif ($TargetPlatform =~ /^powerpc-apple-darwin.*/m) { $e =~ s/^\taddi r1,r1,\d+\n//m; $e =~ s/^\tlwz r\d+,\d+\(r1\)\n//m; $e =~ s/^\tlmw r\d+,-\d+\(r1\)\n//m; $e =~ s/^\tmtlr r0\n//m; $e =~ s/^\tblr\n//m; $e =~ s/^\tb restFP ;.*\n//m; } elsif ($TargetPlatform =~ /^powerpc64-.*-linux/m) { $e =~ s/^\tmr 3,0\n//m; $e =~ s/^\taddi 1,1,\d+\n//m; $e =~ s/^\tld 0,16\(1\)\n//m; $e =~ s/^\tmtlr 0\n//m; # callee-save registers $e =~ s/^\tld \d+,-?\d+\(1\)\n//gm; $e =~ s/^\tlfd \d+,-?\d+\(1\)\n//gm; # get rid of the debug junk along with the blr $e =~ s/^\tblr\n\t.long .*\n\t.byte .*\n//m; # incase we missed it with the last one get the blr alone $e =~ s/^\tblr\n//m; } else { print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n"; } print STDERR "WARNING: Epilogue junk?: $e\n" if $e =~ /^\t\s*[^\.\s\n]/m; # glue together what's left $c .= $e . $etail; } $c =~ s/\n\t\n/\n/m; # junk blank line } else { if ($TargetPlatform =~ /^ia64-/m) { # On IA64, remove an .endp directive even if no epilogue was found. # Code optimizations may have removed the "--- END ---" token. $c =~ s/^\t\.endp [a-zA-Z0-9_.]+#\n//m; } } # On SPARCs, we don't do --- BEGIN/END ---, we just # toss the register-windowing save/restore/ret* instructions # directly unless they've been generated by function definitions in header # files on Solaris: if ( $TargetPlatform =~ /^sparc-/m ) { if ( ! ( $TargetPlatform =~ /solaris2$/m && $chkcat[$i] eq 'unknown' )) { $c =~ s/^\t(save.*|restore.*|ret|retl)\n//gm; } # throw away PROLOGUE comments $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//m; } # On Alphas, the prologue mangling is done a little later (below) # toss all calls to __DISCARD__ $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//gom; $c =~ s/^\tjsr\s+\$26\s*,\s*${T_US}__DISCARD__\n//gom if $TargetPlatform =~ /^alpha-/m; $c =~ s/^\tbl\s+L___DISCARD__\$stub\n//gom if $TargetPlatform =~ /^powerpc-apple-darwin.*/m; $c =~ s/^\tbl\s+__DISCARD__(\@plt)?\n//gom if $TargetPlatform =~ /^powerpc-.*-linux/m; $c =~ s/^\tbl\s+\.__DISCARD__\n\s+nop\n//gom if $TargetPlatform =~ /^powerpc64-.*-linux/m; $c =~ s/^\tcall\s+L___DISCARD__\$stub\n//gom if $TargetPlatform =~ /i386-apple-darwin.*/m; # IA64: fix register allocation; mangle tailcalls into jumps if ($TargetPlatform =~ /^ia64-/m) { ia64_rename_registers($ia64_locnum, $ia64_outnum) if (defined($ia64_locnum)); ia64_mangle_tailcalls(); } # MIPS: that may leave some gratuitous asm macros around # (no harm done; but we get rid of them to be tidier) $c =~ s/^\t\.set\tnoreorder\n\t\.set\tnomacro\n\taddu\t(\S+)\n\t\.set\tmacro\n\t\.set\treorder\n/\taddu\t$1\n/m if $TargetPlatform =~ /^mips-/m; # toss stack adjustment after DoSparks $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/gm if $TargetPlatform =~ /^m68k-/m; # this looks old... if ( $TargetPlatform =~ /^alpha-/m && ! $magic_rdata_seen && $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/m ) { $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/m; $magic_rdata_seen = 1; } # pick some end-things and move them to the next chunk # pin a funny end-thing on (for easier matching): $c .= 'FUNNY#END#THING'; while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/om ) { $to_move = $1; # on x86 we try not to copy any directives into a literal # chunk, rather we keep looking for the next real chunk. This # is because we get things like # # .globl blah_closure # .LC32 # .string "..." # blah_closure: # ... # if ( $TargetPlatform =~ /^(i386|sparc|powerpc)/m && $to_move =~ /${T_COPY_DIRVS}/m ) { $j = $i + 1; while ( $j < $numchks && $chk[$j] =~ /$T_CONST_LBL/m) { $j++; } if ( $j < $numchks ) { $chk[$j] = $to_move . $chk[$j]; } } elsif ( ( $i < ($numchks - 1) && ( $to_move =~ /${T_COPY_DIRVS}/m || ( $TargetPlatform =~ /^hppa/m && $to_move =~ /align/m && $chkcat[$i+1] eq 'literal') ) ) || ($to_move =~ /^[ \t]*\.section[ \t]+\.note\.GNU-stack,/m) ) { $chk[$i + 1] = $to_move . $chk[$i + 1]; # otherwise they're tossed } $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/om; } if ( $TargetPlatform =~ /^alpha-/m && $c =~ /^\t\.ent\s+(\S+)/m ) { $ent = $1; # toss all prologue stuff, except for loading gp, and the ..ng address unless ($c =~ /\.ent.*\n\$.*\.\.ng:/m) { if (($p, $r) = split(/^\t\.prologue/m, $c)) { # use vars '$junk'; # Unused? if (($keep, $junk) = split(/\.\.ng:/m, $p)) { $keep =~ s/^\t\.frame.*\n/\t.frame \$30,0,\$26,0\n/m; $keep =~ s/^\t\.(mask|fmask).*\n//gm; $c = $keep . "..ng:\n"; } else { print STDERR "malformed code block ($ent)?\n" } } $c .= "\t.prologue" . $r; } } $c =~ s/FUNNY#END#THING//m; # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c; $chk[$i] = $c; # update w/ convenience copy } # open CHUNKS, ">/tmp/chunks2" or die "Cannot open /tmp/chunks2: $!\n"; # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] } # close CHUNKS; if ( $TargetPlatform =~ /^alpha-/m ) { # print out the header stuff first $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/m; print OUTASM $chk[0]; } elsif ( $TargetPlatform =~ /^hppa/m ) { print OUTASM $chk[0]; } elsif ( $TargetPlatform =~ /^mips-/m ) { $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0]; # get rid of horrible "Revision: .*$" strings local(@lines0) = split(/\n/m, $chk[0]); local($z) = 0; while ( $z <= $#lines0 ) { if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/m ) { undef($lines0[$z]); $z++; while ( $z <= $#lines0 ) { undef($lines0[$z]); last if $lines0[$z] =~ /[,\t]0x0$/m; $z++; } } $z++; } $chk[0] = join("\n", @lines0); $chk[0] =~ s/\n\n+/\n/m; print OUTASM $chk[0]; } # print out all the literal strings next for ($i = 0; $i < $numchks; $i++) { if ( $chkcat[$i] eq 'literal' ) { # HACK: try to detect 16-byte constants and align them # on a 16-byte boundary. x86_64 sometimes needs 128-bit # aligned constants, and so does Darwin/x86. if ( $TargetPlatform =~ /^x86_64/m || $TargetPlatform =~ /^i386-apple-darwin/m ) { $z = $chk[$i]; if ($z =~ /(\.long.*\n.*\.long.*\n.*\.long.*\n.*\.long|\.quad.*\n.*\.quad)/m) { print OUTASM $T_HDR_literal16; } else { print OUTASM $T_HDR_literal; } } else { print OUTASM $T_HDR_literal; } print OUTASM $chk[$i]; print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/m; # for the splitter $chkcat[$i] = 'DONE ALREADY'; } } # on the HPPA, print out all the bss next if ( $TargetPlatform =~ /^hppa/m ) { for ($i = 1; $i < $numchks; $i++) { if ( $chkcat[$i] eq 'bss' ) { print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n"; print OUTASM $chk[$i]; $chkcat[$i] = 'DONE ALREADY'; } } } # $numchks + 1 as we have the extra one for .note.GNU-stack for ($i = $FIRST_MANGLABLE; $i < $numchks + 1; $i++) { # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n"; next if $chkcat[$i] eq 'DONE ALREADY'; if ( $chkcat[$i] eq 'misc' || $chkcat[$i] eq 'unknown' ) { if ($chk[$i] ne '') { print OUTASM $T_HDR_misc; &print_doctored($chk[$i], 0); } } elsif ( $chkcat[$i] eq 'verbatim' ) { print OUTASM $chk[$i]; } elsif ( $chkcat[$i] eq 'toss' ) { print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n"; } elsif ( $chkcat[$i] eq 'data' ) { if ($chk[$i] ne '') { print OUTASM $T_HDR_data; print OUTASM $chk[$i]; } } elsif ( $chkcat[$i] eq 'splitmarker' ) { # we can just re-constitute this one... # NB: we emit _three_ underscores no matter what, # so ghc-split doesn't have to care. print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n"; } elsif ( $chkcat[$i] eq 'closure' || $chkcat[$i] eq 'srt' || $chkcat[$i] eq 'infotbl' || $chkcat[$i] eq 'entry') { # do them in that order $symb = $chksymb[$i]; # CLOSURE if ( defined($closurechk{$symb}) ) { print OUTASM $T_HDR_closure; print OUTASM $chk[$closurechk{$symb}]; $chkcat[$closurechk{$symb}] = 'DONE ALREADY'; } # SRT if ( defined($srtchk{$symb}) ) { print OUTASM $T_HDR_relrodata; print OUTASM $chk[$srtchk{$symb}]; $chkcat[$srtchk{$symb}] = 'DONE ALREADY'; } # INFO TABLE if ( defined($infochk{$symb}) ) { print OUTASM $T_HDR_info; print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1); # entry code will be put here! $chkcat[$infochk{$symb}] = 'DONE ALREADY'; } # ENTRY POINT if ( defined($entrychk{$symb}) ) { $c = $chk[$entrychk{$symb}]; # If this is an entry point with an info table, # eliminate the entry symbol and all directives involving it. if (defined($infochk{$symb}) && $TargetPlatform !~ /^ia64-/m) { @o = (); foreach $l (split(/\n/m,$c)) { next if $l =~ /^.*$symb_(entry|ret)${T_POST_LBL}/m; # If we have .type/.size direrctives involving foo_entry, # then make them refer to foo_info instead. The information # in these directives is used by the cachegrind annotator, # so it is worthwhile keeping. if ($l =~ /^\s*\.(type|size).*$symb_(entry|ret)/m) { $l =~ s/$symb(_entry|_ret)/${symb}_info/gm; push(@o,$l); next; } next if $l =~ /^\s*\..*$symb.*\n?/m; push(@o,$l); } $c = join("\n",@o) . "\n"; } print OUTASM $T_HDR_entry; &print_doctored($c, 1); # NB: the 1!!! $chkcat[$entrychk{$symb}] = 'DONE ALREADY'; } } elsif ( $chkcat[$i] eq 'vector' ) { $symb = $chksymb[$i]; # VECTOR TABLE if ( defined($vectorchk{$symb}) ) { print OUTASM $T_HDR_vector; print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0); # direct return code will be put here! $chkcat[$vectorchk{$symb}] = 'DONE ALREADY'; } elsif ( $TargetPlatform =~ /^alpha-/m ) { # Alphas: the commented nop is for the splitter, to ensure # that no module ends with a label as the very last # thing. (The linker will adjust the label to point # to the first code word of the next module linked in, # even if alignment constraints cause the label to move!) print OUTASM "\t# nop\n"; } } elsif ( $chkcat[$i] eq 'rodata' ) { print OUTASM $T_HDR_rodata; print OUTASM $chk[$i]; $chkcat[$i] = 'DONE ALREADY'; } elsif ( $chkcat[$i] eq 'relrodata' ) { print OUTASM $T_HDR_relrodata; print OUTASM $chk[$i]; $chkcat[$i] = 'DONE ALREADY'; } elsif ( $chkcat[$i] eq 'toc' ) { # silly optimisation to print tocs, since they come in groups... print OUTASM $T_HDR_toc; local($j) = $i; while ($chkcat[$j] eq 'toc') { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/m # not needed: always turned into a jump. ) { print OUTASM $chk[$j]; } $chkcat[$j] = 'DONE ALREADY'; $j++; } } elsif ( $TargetPlatform =~ /^.*-apple-darwin.*/m && $chkcat[$i] eq 'dyld' ) { # apple-darwin: dynamic linker stubs if($chk[$i] !~ /\.indirect_symbol ___DISCARD__/m) { # print them out unchanged, but remove the stubs for __DISCARD__ print OUTASM $chk[$i]; } } elsif ( $TargetPlatform =~ /^i386-apple-darwin.*/m && $chkcat[$i] eq 'get_pc_thunk' ) { # i386-apple-darwin: __i686.get_pc_thunk.[abcd]x print OUTASM ".section __TEXT,__textcoal_nt,coalesced,no_toc\n"; print OUTASM $chk[$i]; } else { &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n"); } } print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/m; # finished close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n"); close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n"); } sub ia64_mangle_tailcalls { # Function input and output are in $c # Construct the tailcall-mangling expression the first time this function # is called. if (!defined($IA64_MATCH_TAILCALL)) { # One-line pattern matching constructs. None of these # should bind references; all parenthesized terms # should be (?:) terms. my $stop = q/(?:\t;;\n)/; my $bundle = q/(?:\t\.(?:mii|mib|mmi|mmb|mfi|mfb|mbb|bbb)\n)/; my $nop = q/(?:\tnop(?:\.[mifb])?\s+\d+\n)/; my $movgp = q/(?:\tmov r1 = r\d+\n)/; my $postbr = q/(?:\tbr \.L\d+\n)/; my $noeffect = "(?:$stop$bundle?|$nop)*"; my $postbundle = "(?:$bundle?$nop?$nop?$postbr)?"; # Important parts of the pattern match. The branch target # and subsequent jump label are bound to $1 and $2 # respectively. Sometimes there is no label. my $callbr = q/^\tbr\.call\.sptk\.many b0 = (.*)\n/; my $label = q/(?:^\.L([0-9]*):\n)/; my $tailcall = q/\t--- TAILCALL ---\n/; $IA64_MATCH_TAILCALL = $callbr . $label . '?' . $noeffect . $movgp . '?' . $noeffect . $tailcall . $stop . '?' . '(?:' . $postbundle . ')?'; } # Find and mangle tailcalls while ($c =~ s/$IA64_MATCH_TAILCALL/\tbr\.few $1\n/om) { # Eek, the gcc optimiser is getting smarter... if we see a jump to the # --- TAILCALL --- marker then we reapply the substitution at the source sites $c =~ s/^\tbr \.L$2\n/\t--- TAILCALL ---\n/gm if ($2); } # Verify that all instances of TAILCALL were processed if ($c =~ /^\t--- TAILCALL ---\n/m) { die "Unmangled TAILCALL tokens remain after mangling" } } sub ia64_rename_registers() { # The text to be mangled is in $c # Find number of registers in each stack area my ($loc, $out) = @_; my $cout; my $first_out_reg; my $regnum; my $fragment; # These are the register numbers used in the STG runtime my $STG_FIRST_OUT_REG = 32 + 34; my $STG_LAST_OUT_REG = $STG_FIRST_OUT_REG + 7; $first_out_reg = 32 + $loc; if ($first_out_reg > $STG_FIRST_OUT_REG) { die "Too many local registers allocated by gcc"; } # Split the string into fragments containing one register name each. # Rename the register in each fragment and concatenate. $cout = ""; foreach $fragment (split(/(?=r\d+[^a-zA-Z0-9_.])/sm, $c)) { if ($fragment =~ /^r(\d+)((?:[^a-zA-Z0-9_.].*)?)$/sm) { $regnum = $1; if ($regnum < $first_out_reg) { # This is a local or fixed register # Local registers 32 and 33 (r64 and r65) are # used to hold saved state; they shouldn't be touched if ($regnum == 64 || $regnum == 65) { die "Reserved register $regnum is in use"; } } else { # This is an output register $regnum = $regnum - $first_out_reg + $STG_FIRST_OUT_REG; if ($regnum > $STG_LAST_OUT_REG) { die "Register number ($regnum) is out of expected range"; } } # Update this fragment $fragment = "r" . $regnum . $2; } $cout .= $fragment; } $c = $cout; } sub hppa_mash_prologue { # OK, epilogue, too local($_) = @_; # toss all prologue stuff s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/m; # Lie about our .CALLINFO s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/m; # Get rid of P' s/LP'/L'/gm; s/RP'/R'/gm; # toss all epilogue stuff s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/m; # Sorry; we moved the _info stuff to the code segment. s/_info,DATA/_info,CODE/gm; return($_); } sub print_doctored { local($_, $need_fallthru_patch) = @_; if ( $TargetPlatform =~ /^x86_64-/m ) { # Catch things like # # movq -4(%ebp), %rax # jmp *%rax # # and optimise: # s/^\tmovq\s+(-?\d*\(\%r(bx|bp|13)\)),\s*(\%r(ax|cx|dx|10|11))\n\tjmp\s+\*\3/\tjmp\t\*$1/gm; s/^\tmovl\s+\$${T_US}(.*),\s*(\%e(ax|cx|si|di))\n\tjmp\s+\*\%r\3/\tjmp\t$T_US$1/gm; } if ( $TargetPlatform !~ /^i386-/m || ! /^\t[a-z]/m # no instructions in here, apparently || /^${T_US}__stginit_[A-Za-z0-9_]+${T_POST_LBL}/m) { print OUTASM $_; return; } # OK, must do some x86 **HACKING** local($entry_patch) = ''; local($exit_patch) = ''; # gotta watch out for weird instructions that # invisibly smash various regs: # rep* %ecx used for counting # scas* %edi used for destination index # cmps* %e[sd]i used for indices # loop* %ecx used for counting # # SIGH. # We cater for: # * use of STG reg [ nn(%ebx) ] where no machine reg avail # # * GCC used an "STG reg" for its own purposes # # * some secret uses of machine reg, requiring STG reg # to be saved/restored # The most dangerous "GCC uses" of an "STG reg" are when # the reg holds the target of a jmp -- it's tricky to # insert the patch-up code before we get to the target! # So here we change the jmps: # -------------------------------------------------------- # it can happen that we have jumps of the form... # jmp * # or # jmp # # a reasonably-common case is: # # movl $_blah, # jmp * # s/^\tmovl\s+\$${T_US}(.*),\s*(\%e[acd]x)\n\tjmp\s+\*\2/\tjmp $T_US$1/gm; # Catch things like # # movl -4(%ebx), %eax # jmp *%eax # # and optimise: # s/^\tmovl\s+(-?\d*\(\%e(bx|si)\)),\s*(\%e[acd]x)\n\tjmp\s+\*\3/\tjmp\t\*$1/gm; if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi? s/^\tmovl\s+(.*),\s*\%esi\n\tjmp\s+\*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/gm; s/^\tjmp\s+\*(.*\(.*\%esi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/gm; s/^\tjmp\s+\*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/gm; die "$Pgm: (mangler) still have jump involving \%esi!\n$_" if /(jmp|call)\s+.*\%esi/m; } if ($StolenX86Regs <= 3 ) { # spurious uses of edi? s/^\tmovl\s+(.*),\s*\%edi\n\tjmp\s+\*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/gm; s/^\tjmp\s+\*(.*\(.*\%edi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/gm; s/^\tjmp\s+\*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/gm; die "$Pgm: (mangler) still have jump involving \%edi!\n$_" if /(jmp|call)\s+.*\%edi/m; } # OK, now we can decide what our patch-up code is going to # be: # Offsets into register table - you'd better update these magic # numbers should you change its contents! # local($OFFSET_R1)=0; No offset for R1 in new RTS. local($OFFSET_Hp)=88; # Note funky ".=" stuff; we're *adding* to these _patch guys if ( $StolenX86Regs <= 2 && ( /[^0-9]\(\%ebx\)/m || /\%esi/m || /^\tcmps/m ) ) { # R1 (esi) $entry_patch .= "\tmovl \%esi,(\%ebx)\n"; $exit_patch .= "\tmovl (\%ebx),\%esi\n"; # nothing for call_{entry,exit} because %esi is callee-save } if ( $StolenX86Regs <= 3 && ( /${OFFSET_Hp}\(\%ebx\)/m || /\%edi/m || /^\t(scas|cmps)/m ) ) { # Hp (edi) $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n"; $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n"; # nothing for call_{entry,exit} because %edi is callee-save } # -------------------------------------------------------- # next, here we go with non-%esp patching! # s/^(\t[a-z])/$entry_patch$1/m; # before first instruction # Before calling GC we must set up the exit condition before the call # and entry condition when we come back # fix _all_ non-local jumps: if ( $TargetPlatform =~ /^.*-apple-darwin.*/m ) { # On Darwin, we've got local-looking jumps that are # actually global (i.e. jumps to Lfoo$stub or via # Lfoo$non_lazy_ptr), so we fix those first. # In fact, we just fix everything that contains a dollar # because false positives don't hurt here. s/^(\tjmp\s+\*?L.*\$.*\n)/$exit_patch$1/gm; } s/^\tjmp\s+\*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/gom; s/^\tjmp\s+${T_X86_PRE_LLBL_PAT}/\tJMP___L/gom; s/^(\tjmp\s+.*\n)/$exit_patch$1/gm; # here's the fix... s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/gom; s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/gom; if ($StolenX86Regs == 2 ) { die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_" if /^\t(jmp|call)\s+.*\%e(si|di)/m; } elsif ($StolenX86Regs == 3 ) { die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_" if /^\t(jmp|call)\s+.*\%edi/m; } # -------------------------------------------------------- # that's it -- print it # #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia print OUTASM $_; if ( $need_fallthru_patch ) { # exit patch for end of slow entry code print OUTASM $exit_patch; # ToDo: make it not print if there is a "jmp" at the end } } sub init_FUNNY_THINGS { # use vars '%KNOWN_FUNNY_THING'; # Unused? %KNOWN_FUNNY_THING = ( # example # "${T_US}stg_.*{T_POST_LBL}", 1, ); } sub rev_tbl { # use vars '$discard1'; # Unused? local($symb, $tbl, $discard1) = @_; return ($tbl) if ($TargetPlatform =~ /^ia64-/m); local($before) = ''; local($label) = ''; local(@imports) = (); # hppa only local(@words) = (); local($after) = ''; local(@lines) = split(/\n/m, $tbl); local($i, $j); # Deal with the header... for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?${T_DOT_WORD}\s+/om; $i++) { $label .= $lines[$i] . "\n", next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/om || $lines[$i] =~ /${T_DOT_GLOBAL}/om || $lines[$i] =~ /^${T_US}\S+_vtbl${T_POST_LBL}$/om; $before .= $lines[$i] . "\n"; # otherwise... } $infoname = $label; $infoname =~ s/(.|\n)*^([A-Za-z0-9_]+_info)${T_POST_LBL}$(.|\n)*/$2/m; # Grab the table data... if ( $TargetPlatform !~ /^hppa/m ) { for ( ; $i <= $#lines && $lines[$i] =~ /^\t?${T_DOT_WORD}\s+/om; $i++) { $line = $lines[$i]; # Convert addresses of SRTs, slow entrypoints and large bitmaps # to offsets (relative to the info label), # in order to support position independent code. $line =~ s/$infoname/0/m || $line =~ s/([A-Za-z0-9_]+_srtd)$/$1 - $infoname/m || $line =~ s/([A-Za-z0-9_]+_srt(\+\d+)?)$/$1 - $infoname/m || $line =~ s/([A-Za-z0-9_]+_str)$/$1 - $infoname/m || $line =~ s/([A-Za-z0-9_]+_slow)$/$1 - $infoname/m || $line =~ s/([A-Za-z0-9_]+_btm)$/$1 - $infoname/m || $line =~ s/([A-Za-z0-9_]+_alt)$/$1 - $infoname/m || $line =~ s/([A-Za-z0-9_]+_dflt)$/$1 - $infoname/m || $line =~ s/([A-Za-z0-9_]+_ret)$/$1 - $infoname/m; push(@words, $line); } } else { # hppa weirdness for ( ; $i <= $#lines && $lines[$i] =~ /^\s+(${T_DOT_WORD}|\.IMPORT)/m; $i++) { # FIXME: the RTS now expects offsets instead of addresses # for all labels in info tables. if ($lines[$i] =~ /^\s+\.IMPORT/m) { push(@imports, $lines[$i]); } else { # We don't use HP's ``function pointers'' # We just use labels in code space, like normal people $lines[$i] =~ s/P%//m; push(@words, $lines[$i]); } } } # Now throw away any initial zero word from the table. This is a hack # that lets us reduce the size of info tables when the SRT field is not # needed: see comments StgFunInfoTable in InfoTables.h. # # The .zero business is for Linux/ELF. # The .skip business is for Sparc/Solaris/ELF. # The .blockz business is for HPPA. # if ($discard1) { # if ($words[0] =~ /^\t?(${T_DOT_WORD}\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) { # shift(@words); # } # } for (; $i <= $#lines; $i++) { $after .= $lines[$i] . "\n"; } # Alphas: If we have anonymous text (not part of a procedure), the # linker may complain about missing exception information. Bleh. # To suppress this, we place a .ent/.end pair around the code. # At the same time, we have to be careful and not enclose any leading # .file/.loc directives. if ( $TargetPlatform =~ /^alpha-/m && $label =~ /^([A-Za-z0-9_]+):$/m) { local ($ident) = $1; $before =~ s/^((\s*\.(file|loc)\s+[^\n]*\n)*)/$1\t.ent $ident\n/m; $after .= "\t.end $ident\n"; } # Alphas: The heroic Simon Marlow found a bug in the Digital UNIX # assembler (!) wherein .quad constants inside .text sections are # first narrowed to 32 bits then sign-extended back to 64 bits. # This obviously screws up our 64-bit bitmaps, so we work around # the bug by replacing .quad with .align 3 + .long + .long [ccshan] if ( $TargetPlatform =~ /^alpha-/m ) { foreach (@words) { if (/^\s*\.quad\s+([-+0-9].*\S)\s*$/m && length $1 >= 10) { local ($number) = $1; if ($number =~ /^([-+])?(0x?)?([0-9]+)$/m) { local ($sign, $base, $digits) = ($1, $2, $3); $base = (10, 8, 16)[length $base]; local ($hi, $lo) = (0, 0); foreach $i (split(//, $digits)) { $j = $lo * $base + $i; $lo = $j % 4294967296; $hi = $hi * $base + ($j - $lo) / 4294967296; } ($hi, $lo) = (4294967295 - $hi, 4294967296 - $lo) if $sign eq "-"; $_ = "\t.align 3\n\t.long $lo\n\t.long $hi\n"; # printf STDERR "TURNING %s into 0x %08x %08x\n", $number, $hi, $lo; } else { print STDERR "Cannot handle \".quad $number\" in info table\n"; exit 1; } } } } if ( $TargetPlatform =~ /x86_64-apple-darwin/m ) { # Tack a label to the front of the info table, too. # For now, this just serves to work around a crash in Apple's new # 64-bit linker (it seems to assume that there is no data before the # first label in a section). # The plan for the future is to do this on all Darwin platforms, and # to add a reference to this label after the entry code, just as the # NCG does, so we can enable dead-code-stripping in the linker without # losing our info tables. (Hence the name _dsp, for dead-strip preventer) $before .= "\n${infoname}_dsp:\n"; } $tbl = $before . (($TargetPlatform !~ /^hppa/m) ? '' : join("\n", @imports) . "\n") . join("\n", @words) . "\n" . $label . $after; # print STDERR "before=$before\n"; # print STDERR "label=$label\n"; # print STDERR "words=",(reverse @words),"\n"; # print STDERR "after=$after\n"; $tbl; } sub mini_mangle_asm_hppa { local($in_asmf, $out_asmf) = @_; open(INASM, "< $in_asmf") || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n"); open(OUTASM,"> $out_asmf") || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n"); while () { s/_info,DATA/_info,CODE/m; # Move _info references to code space s/P%_PR/_PR/m; print OUTASM; } # finished: close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n"); close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n"); } sub tidy_up_and_die { local($return_val, $msg) = @_; print STDERR $msg; exit (($return_val == 0) ? 0 : 1); }