1 %************************************************************************
3 \section[Driver-asm-fiddling]{Fiddling with assembler files}
5 %************************************************************************
10 Utterly stomp out C functions' prologues and epilogues; i.e., the
11 stuff to do with the C stack.
13 Any other required tidying up.
16 General note [chak]: Many regexps are very fragile because they rely on white
17 space being in the right place. This caused trouble with gcc 2.95 (at least
18 on Linux), where the use of white space in .s files generated by gcc suddenly
19 changed. To guarantee compatibility across different versions of gcc, make
20 sure (at least on i386-.*-linux) that regexps tolerate varying amounts of white
21 space between an assembler statement and its arguments as well as after a the
22 comma separating multiple arguments.
24 \emph{For the time being, I have corrected the regexps for i386-.*-linux. I
25 didn't touch all the regexps for other i386 platforms, as I don't have
26 a box to test these changes.}
31 The HP linker is very picky about symbols being in the appropriate
32 space (code vs. data). When we mangle the threaded code to put the
33 info tables just prior to the code, they wind up in code space
34 rather than data space. This means that references to *_info from
35 un-mangled parts of the RTS (e.g. unthreaded GC code) get
36 unresolved symbols. Solution: mini-mangler for .c files on HP. I
37 think this should really be triggered in the driver by a new -rts
38 option, so that user code doesn't get mangled inappropriately.
40 With reversed tables, jumps are to the _info label rather than to
41 the _entry label. The _info label is just an address in code
42 space, rather than an entry point with the descriptive blob we
43 talked about yesterday. As a result, you can't use the call-style
44 JMP_ macro. However, some JMP_ macros take _info labels as targets
45 and some take code entry points within the RTS. The latter won't
46 work with the goto-style JMP_ macro. Sigh. Solution: Use the goto
47 style JMP_ macro, and mangle some more assembly, changing all
48 "RP'literal" and "LP'literal" references to "R'literal" and
49 "L'literal," so that you get the real address of the code, rather
50 than the descriptive blob. Also change all ".word P%literal"
51 entries in info tables and vector tables to just ".word literal,"
52 for the same reason. Advantage: No more ridiculous call sequences.
55 %************************************************************************
57 \subsection{Top-level code}
59 %************************************************************************
62 $TargetPlatform = $TARGETPLATFORM;
64 ($Pgm = $0) =~ s|.*/||;
68 if ( $TargetPlatform =~ /^i386-/ ) {
72 $StolenX86Regs = $ARGV[2];
76 &mangle_asm($ifile,$ofile);
81 %************************************************************************
83 \subsection{Constants for various architectures}
85 %************************************************************************
88 sub init_TARGET_STUFF {
90 #--------------------------------------------------------#
91 if ( $TargetPlatform =~ /^alpha-.*-.*/ ) {
93 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
94 $T_US = ''; # _ if symbols have an underscore on the front
95 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
96 $T_CONST_LBL = '^\$L?C(\d+):$'; # regexp for what such a lbl looks like
99 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\#.*|\.(file|loc)\s+\S+\s+\S+|\.text|\.r?data)\n)';
100 $T_COPY_DIRVS = '^\s*(\#|\.(file|globl|ent|loc))';
102 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
103 $T_DOT_WORD = '\.(long|quad|byte|word)';
104 $T_DOT_GLOBAL = '^\t\.globl';
105 $T_HDR_literal = "\.rdata\n\t\.align 3\n";
106 $T_HDR_misc = "\.text\n\t\.align 3\n";
107 $T_HDR_data = "\.data\n\t\.align 3\n";
108 $T_HDR_consist = "\.text\n";
109 $T_HDR_closure = "\.data\n\t\.align 3\n";
110 $T_HDR_srt = "\.text\n\t\.align 3\n";
111 $T_HDR_info = "\.text\n\t\.align 3\n";
112 $T_HDR_entry = "\.text\n\t\.align 3\n";
113 $T_HDR_fast = "\.text\n\t\.align 3\n";
114 $T_HDR_vector = "\.text\n\t\.align 3\n";
115 $T_HDR_direct = "\.text\n\t\.align 3\n";
117 #--------------------------------------------------------#
118 } elsif ( $TargetPlatform =~ /^hppa/ ) {
120 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
121 $T_US = ''; # _ if symbols have an underscore on the front
122 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
123 $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like
126 $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)';
127 $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)';
129 $T_hsc_cc_PAT = '\.STRING.*\)(hsc|cc) (.*)\\\\x09(.*)\\\\x00"';
130 $T_DOT_WORD = '\.(blockz|word|half|byte)';
131 $T_DOT_GLOBAL = '^\s+\.EXPORT';
132 $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
133 $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
134 $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
135 $T_HDR_consist = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
136 $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
137 $T_HDR_srt = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
138 $T_HDR_info = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
139 $T_HDR_entry = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
140 $T_HDR_fast = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
141 $T_HDR_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
142 $T_HDR_direct = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
144 #--------------------------------------------------------#
145 } elsif ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd2|openbsd|nextstep3|cygwin32|mingw32)$/ ) {
146 # NeXT added but not tested. CaS
148 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
149 $T_US = '_'; # _ if symbols have an underscore on the front
150 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
151 $T_CONST_LBL = '^LC(\d+):$';
153 $T_X86_PRE_LLBL_PAT = 'L';
154 $T_X86_PRE_LLBL = 'L';
155 $T_X86_BADJMP = '^\tjmp [^L\*]';
157 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*)\n)';
158 $T_COPY_DIRVS = '\.(globl|stab)';
159 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
160 $T_DOT_WORD = '\.(long|word|value|byte|space)';
161 $T_DOT_GLOBAL = '\.globl';
162 $T_HDR_literal = "\.text\n\t\.align 2\n";
163 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
164 $T_HDR_data = "\.data\n\t\.align 2\n";
165 $T_HDR_consist = "\.text\n";
166 $T_HDR_closure = "\.data\n\t\.align 2\n";
167 $T_HDR_closure = "\.data\n\t\.align 2\n\t.long 0\n" if ( $TargetPlatform =~ /.*-mingw32$/ );
168 $T_HDR_srt = "\.text\n\t\.align 2\n";
169 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
170 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
171 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
172 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
173 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
175 #--------------------------------------------------------#
176 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|freebsd|netbsd)$/ ) {
178 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
179 $T_US = ''; # _ if symbols have an underscore on the front
180 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
181 ($TargetPlatform =~ /-(linux|freebsd|netbsd)$/) ? '#' : '/' ;
182 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
184 $T_X86_PRE_LLBL_PAT = '\.L';
185 $T_X86_PRE_LLBL = '.L';
186 $T_X86_BADJMP = '^\tjmp\s+[^\.\*]';
188 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,\s*0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.Lfe.*\n\s*\.size\s+.*|\.size\s+.*|\.ident.*)\n)';
189 $T_COPY_DIRVS = '\.(globl)';
191 if ( $TargetPlatform =~ /freebsd|netbsd/ ) {
192 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
194 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
197 $T_DOT_WORD = '\.(long|value|byte|zero)';
198 $T_DOT_GLOBAL = '\.globl';
199 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
200 $T_HDR_misc = "\.text\n\t\.align 4\n";
201 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
202 $T_HDR_consist = "\.text\n";
203 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
204 $T_HDR_srt = "\.text\n\t\.align 4\n"; # ToDo: change align?
205 $T_HDR_info = "\.text\n\t\.align 4\n"; # NB: requires padding
206 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
207 $T_HDR_fast = "\.text\n\t\.align 4\n";
208 $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding
209 $T_HDR_direct = "\.text\n\t\.align 4\n";
211 #--------------------------------------------------------#
212 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
214 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
215 $T_US = '_'; # _ if symbols have an underscore on the front
216 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
217 $T_CONST_LBL = '^LC(\d+):$';
220 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
221 $T_COPY_DIRVS = '\.(globl|proc|stab)';
222 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
224 $T_DOT_WORD = '\.long';
225 $T_DOT_GLOBAL = '\.globl';
226 $T_HDR_literal = "\.text\n\t\.even\n";
227 $T_HDR_misc = "\.text\n\t\.even\n";
228 $T_HDR_data = "\.data\n\t\.even\n";
229 $T_HDR_consist = "\.text\n";
230 $T_HDR_closure = "\.data\n\t\.even\n";
231 $T_HDR_srt = "\.text\n\t\.even\n";
232 $T_HDR_info = "\.text\n\t\.even\n";
233 $T_HDR_entry = "\.text\n\t\.even\n";
234 $T_HDR_fast = "\.text\n\t\.even\n";
235 $T_HDR_vector = "\.text\n\t\.even\n";
236 $T_HDR_direct = "\.text\n\t\.even\n";
238 #--------------------------------------------------------#
239 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
241 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
242 $T_US = ''; # _ if symbols have an underscore on the front
243 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
244 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
247 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
248 $T_COPY_DIRVS = '\.(globl|ent)';
250 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
251 $T_DOT_WORD = '\.word';
252 $T_DOT_GLOBAL = '^\t\.globl';
253 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
254 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
255 $T_HDR_data = "\t\.data\n\t\.align 2\n";
256 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
257 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
258 $T_HDR_srt = "\t\.text\n\t\.align 2\n";
259 $T_HDR_info = "\t\.text\n\t\.align 2\n";
260 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
261 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
262 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
263 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
265 #--------------------------------------------------------#
266 } elsif ( $TargetPlatform =~ /^powerpc-.*|^rs6000-.*/ ) {
268 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
269 $T_US = ''; # _ if symbols have an underscore on the front
270 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
271 $T_CONST_LBL = 'NOT APPLICABLE'; # regexp for what such a lbl looks like
274 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
275 $T_COPY_DIRVS = '\.(l?globl)';
277 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
278 $T_DOT_WORD = '\.long';
279 $T_DOT_GLOBAL = '\.globl';
280 $T_HDR_toc = "\.toc\n";
281 $T_HDR_literal = "\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
282 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
283 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
284 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
285 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
286 $T_HDR_srt = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
287 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
288 $T_HDR_entry = "# entry\n\.csect \.text[PR]\n\t\.align 2\n";
289 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
290 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
291 $T_HDR_direct = "# direct\n";
293 #--------------------------------------------------------#
294 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
296 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
297 $T_US = ''; # _ if symbols have an underscore on the front
298 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
299 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
302 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
303 $T_COPY_DIRVS = '\.(global|proc|stab)';
305 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
306 $T_DOT_WORD = '\.(word|byte|half|skip|uahalf|uaword)';
307 $T_DOT_GLOBAL = '^\t\.global';
308 $T_HDR_literal = "\.text\n\t\.align 8\n";
309 $T_HDR_misc = "\.text\n\t\.align 4\n";
310 $T_HDR_data = "\.data\n\t\.align 8\n";
311 $T_HDR_consist = "\.text\n";
312 $T_HDR_closure = "\.data\n\t\.align 4\n";
313 $T_HDR_srt = "\.data\n\t\.align 4\n";
314 $T_HDR_info = "\.text\n\t\.align 4\n";
315 $T_HDR_entry = "\.text\n\t\.align 4\n";
316 $T_HDR_fast = "\.text\n\t\.align 4\n";
317 $T_HDR_vector = "\.text\n\t\.align 4\n";
318 $T_HDR_direct = "\.text\n\t\.align 4\n";
320 #--------------------------------------------------------#
321 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
323 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
324 $T_US = '_'; # _ if symbols have an underscore on the front
325 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
326 $T_CONST_LBL = '^LC(\d+):$';
329 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
330 $T_COPY_DIRVS = '\.(global|proc|stab)';
331 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
333 $T_DOT_WORD = '\.word';
334 $T_DOT_GLOBAL = '^\t\.global';
335 $T_HDR_literal = "\.text\n\t\.align 8\n";
336 $T_HDR_misc = "\.text\n\t\.align 4\n";
337 $T_HDR_data = "\.data\n\t\.align 8\n";
338 $T_HDR_consist = "\.text\n";
339 $T_HDR_closure = "\.data\n\t\.align 4\n";
340 $T_HDR_srt = "\.data\n\t\.align 4\n";
341 $T_HDR_info = "\.text\n\t\.align 4\n";
342 $T_HDR_entry = "\.text\n\t\.align 4\n";
343 $T_HDR_fast = "\.text\n\t\.align 4\n";
344 $T_HDR_vector = "\.text\n\t\.align 4\n";
345 $T_HDR_direct = "\.text\n\t\.align 4\n";
347 #--------------------------------------------------------#
349 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
354 print STDERR "T_STABBY: $T_STABBY\n";
355 print STDERR "T_US: $T_US\n";
356 print STDERR "T_PRE_APP: $T_PRE_APP\n";
357 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
358 print STDERR "T_POST_LBL: $T_POST_LBL\n";
359 if ( $TargetPlatform =~ /^i386-/ ) {
360 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
361 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
362 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
364 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
365 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
366 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
367 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
368 print STDERR "T_HDR_literal: $T_HDR_literal\n";
369 print STDERR "T_HDR_misc: $T_HDR_misc\n";
370 print STDERR "T_HDR_data: $T_HDR_data\n";
371 print STDERR "T_HDR_consist: $T_HDR_consist\n";
372 print STDERR "T_HDR_closure: $T_HDR_closure\n";
373 print STDERR "T_HDR_info: $T_HDR_info\n";
374 print STDERR "T_HDR_entry: $T_HDR_entry\n";
375 print STDERR "T_HDR_fast: $T_HDR_fast\n";
376 print STDERR "T_HDR_vector: $T_HDR_vector\n";
377 print STDERR "T_HDR_direct: $T_HDR_direct\n";
383 %************************************************************************
385 \subsection{Mangle away}
387 %************************************************************************
391 local($in_asmf, $out_asmf) = @_;
393 # multi-line regexp matching:
398 &init_TARGET_STUFF();
399 &init_FUNNY_THINGS();
401 open(INASM, "< $in_asmf")
402 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
403 open(OUTASM,"> $out_asmf")
404 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
406 # read whole file, divide into "chunks":
407 # record some info about what we've found...
409 @chk = (); # contents of the chunk
410 $numchks = 0; # number of them
411 @chkcat = (); # what category of thing in each chunk
412 @chksymb = (); # what symbol(base) is defined in this chunk
413 %slowchk = (); # ditto, its regular "slow" entry code
414 %fastchk = (); # ditto, fast entry code
415 %closurechk = (); # ditto, the (static) closure
416 %srtchk = (); # ditto, its SRT (for top-level things)
417 %infochk = (); # given a symbol base, say what chunk its info tbl is in
418 %vectorchk = (); # ditto, return vector table
419 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
421 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
424 tr/\r//d if $TargetPlatform =~ /-mingw32$/;
425 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
426 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
427 next if /^\t\.def.*endef$/;
428 next if /${T_PRE_APP}(NO_)?APP/o;
429 next if /^;/ && $TargetPlatform =~ /^hppa/;
431 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc|rs6000)-/;
433 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-|^rs6000-/;
435 if ( $TargetPlatform =~ /^mips-/
436 && /^\t\.(globl\S+\.text|comm\t)/ ) {
437 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
439 # As a temporary solution for compiling "foreign export" declarations,
440 # we use global variables to pass arguments from C to STG land.
441 # These declarations live in the .hc file and not in the generated C
442 # stub file, so we let them pass through here.
443 } elsif ( /^\t\.comm\t__fexp_.*$/ ) {
445 $chkcat[$i] = 'data';
448 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
449 # duplicated from the bottom
453 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
454 # Alphas: Local labels not to be confused with new chunks
457 # NB: all the rest start with a non-space
459 } elsif ( $TargetPlatform =~ /^mips-/
460 && /^\d+:/ ) { # a funny-looking very-local label
463 } elsif ( /$T_CONST_LBL/o ) {
465 $chkcat[$i] = 'literal';
468 } elsif ( /^${T_US}__stg_split_marker(\d*)${T_POST_LBL}$/o ) {
470 $chkcat[$i] = 'splitmarker';
473 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
476 $chkcat[$i] = 'infotbl';
477 $chksymb[$i] = $symb;
479 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
481 $infochk{$symb} = $i;
483 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(entry|ret)${T_POST_LBL}$/o ) {
485 $chkcat[$i] = 'slow';
490 } elsif ( /^${T_US}([A-Za-z0-9_]+)_fast\d*${T_POST_LBL}$/o ) {
492 $chkcat[$i] = 'fast';
497 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
499 $chkcat[$i] = 'closure';
502 $closurechk{$1} = $i;
504 } elsif ( /^${T_US}([A-Za-z0-9_]+)_srt${T_POST_LBL}$/o ) {
511 } elsif ( /^${T_US}([A-Za-z0-9_]+)_ct${T_POST_LBL}$/o ) {
513 $chkcat[$i] = 'data';
516 } elsif ( /^${T_US}ghc.*c_ID${T_POST_LBL}/o ) {
518 $chkcat[$i] = 'consist';
520 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
523 } elsif ( /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
524 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
525 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
526 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
529 $chkcat[$i] = 'data';
532 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
537 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^LC\.\.([0-9]+)/ ) {
542 } elsif ( /^${T_US}([A-Za-z0-9_]+)_cc(s)?${T_POST_LBL}$/o ) {
543 # all CC_ symbols go in the data section...
545 $chkcat[$i] = 'data';
548 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(alt|dflt)${T_POST_LBL}$/o ) {
550 $chkcat[$i] = 'misc';
553 #$chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-|^rs6000-/) ; #rm andre
555 } elsif ( /^${T_US}([A-Za-z0-9_]+)_vtbl${T_POST_LBL}$/o ) {
557 $chkcat[$i] = 'vector';
562 # As a temporary solution for compiling "foreign export" declarations,
563 # we use global variables to pass arguments from C to STG land.
564 # These declarations live in the .hc file and not in the generated C
565 # stub file, so we let them pass through here.
566 } elsif ( /^[\t ]+\.comm[\t ]+__fexp_.*$/ ) {
568 $chkcat[$i] = 'data';
571 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
572 && /^[A-Za-z0-9][A-Za-z0-9_]*:/ ) {
573 # Some Solaris system headers contain function definitions (as
574 # opposed to mere prototypes), which end up in the .hc file when
575 # a Haskell module foreign imports the corresponding system
576 # functions (most notably stat()). We put them into the text
577 # segment. Note that this currently does not extend to function
578 # names starting with an underscore.
581 $chkcat[$i] = 'misc';
584 } elsif ( /^${T_US}[A-Za-z0-9_]/o
585 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
587 && ( $TargetPlatform !~ /^powerpc|^rs6000/ # ditto
588 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
591 print STDERR "Funny global thing?: $_"
592 unless $KNOWN_FUNNY_THING{$thing}
593 || /^${T_US}stg_.*${T_POST_LBL}$/o # RTS internals
594 || /^${T_US}__fexp_.*${T_POST_LBL}$/o # foreign export
595 || /^${T_US}__stginit.*${T_POST_LBL}$/o # __stginit<module>
596 || /^${T_US}.*_btm${T_POST_LBL}$/o # large bitmaps
597 || /^${T_US}.*_closure_tbl${T_POST_LBL}$/o # closure tables
598 || /^_uname:/o; # x86/Solaris2
600 $chkcat[$i] = 'misc';
601 if ($TargetPlatform =~ /^powerpc-|^rs6000-/)
602 { $chksymb[$i] = $thing; }
603 else { $chksymb[$i] = ''; };
605 } else { # simple line (duplicated at the top)
610 $numchks = $#chk + 1;
612 # open CHUNKS, ">/tmp/chunks1" or die "Cannot open /tmp/chunks1: $!\n";
613 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
616 # the division into chunks is imperfect;
617 # we throw some things over the fence into the next
620 # also, there are things we would like to know
621 # about the whole module before we start spitting
624 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
625 local($FIRST_TOSSABLE ) = ($TargetPlatform =~ /^(hppa|mips-)/) ? 1 : 0;
627 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
629 # Alphas: NB: we start meddling at chunk 1, not chunk 0
630 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
631 # spits a ".quad 0" in after the very first ".rdata"; we
632 # detect this special case (tossing the ".quad 0")!
633 local($magic_rdata_seen) = 0;
635 # HPPAs, MIPSen: also start medding at chunk 1
637 if ($TargetPlatform =~ /^powerpc|^rs6000/) {
638 print OUTASM $T_HDR_toc; # yes, we have to put a .toc
639 # in the beginning of every file!
640 %tocequiv = (); # maps toc symbol number to toc symbol
641 %revtocequiv = (); # maps toc symbol to toc symbol number
642 for ($i = 1; $i < $numchks; $i++) {
643 $chk[$i] =~ s/\[RW\]//g;
644 $chk[$i] =~ s/\[DS\]//g;
645 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
647 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
648 #ToDo: instead of all these changes, just fix mangle_powerpc_tailjump and delete/ignore these tocs?
649 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
650 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
651 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
652 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
653 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(alt_\S+)/\t\.tc \1\[TC\],\.\2/;
654 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
656 $tocnumber = $chksymb[$i];
658 $tocsymb =~ s/^LC\.\.\d+:\n//;
659 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
660 $tocequiv{$tocnumber} = $tocsymb;
662 } elsif ( $chkcat[$i] eq 'toc' && $chk[$i] =~ /\.byte/ ) {
663 $chkcat[$i] = 'literal';
668 for ($i = $FIRST_TOSSABLE; $i < $numchks; $i++) {
669 $c = $chk[$i]; # convenience copy
671 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
673 # toss all prologue stuff; HPPA is pretty weird
675 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
677 # be slightly paranoid to make sure there's
678 # nothing surprising in there
679 if ( $c =~ /--- BEGIN ---/ ) {
680 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
682 if ($TargetPlatform =~ /^i386-/) {
683 $p =~ s/^\tpushl\s+\%edi\n//;
684 $p =~ s/^\tpushl\s+\%esi\n//;
685 $p =~ s/^\tpushl\s+\%ebx\n//;
686 $p =~ s/^\tsubl\s+\$\d+,\s*\%esp\n//;
687 $p =~ s/^\tmovl\s+\$\d+,\s*\%eax\n\tcall\s+__alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
688 } elsif ($TargetPlatform =~ /^m68k-/) {
689 $p =~ s/^\tlink a6,#-?\d.*\n//;
690 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
691 # The above showed up in the asm code,
692 # so I added it here.
693 # I hope it's correct.
695 $p =~ s/^\tmovel d2,sp\@-\n//;
696 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
697 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
698 } elsif ($TargetPlatform =~ /^mips-/) {
699 # the .frame/.mask/.fmask that we use is the same
700 # as that produced by GCC for miniInterpret; this
701 # gives GDB some chance of figuring out what happened
702 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
703 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
704 $p =~ s/^\t\.(mask|fmask).*\n//g;
705 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
706 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
707 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
708 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
709 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
710 $p =~ s/__FRAME__/$FRAME/;
711 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000/) {
712 $p =~ s/^\tmflr 0\n//;
713 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
714 $p =~ s/^\tstw? 0,\d+\(1\)\n//g;
715 $p =~ s/^\tstw? 1,\d+\(1\)\n//g; #mc
716 $p =~ s/^\tlw?z 0,0\(1\)\n//g; #mc
717 $p =~ s/^\tstw?u 1,-\d+\(1\)\n//;
718 $p =~ s/^\tstw? \d+,-\d+\(1\)\n//g;
719 $p =~ s/^\tstfd \d+,-\d+\(1\)\n//g;
721 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
724 # HWL HACK: dont die, just print a warning
725 #print stderr "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
726 # && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
727 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
728 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
730 # glue together what's left
732 $c =~ s/\n\t\n/\n/; # junk blank line
736 if ( $TargetPlatform =~ /^mips-/ ) {
737 # MIPS: first, this basic sequence may occur "--- END ---" or not
738 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
741 # toss all epilogue stuff; again, paranoidly
742 if ( $c =~ /--- END ---/ ) {
743 if (($r, $e) = split(/--- END ---/, $c)) {
744 if ($TargetPlatform =~ /^i386-/) {
746 $e =~ s/^\tpopl\s+\%edi\n//;
747 $e =~ s/^\tpopl\s+\%esi\n//;
748 $e =~ s/^\tpopl\s+\%edx\n//;
749 $e =~ s/^\tpopl\s+\%ecx\n//;
750 $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//;
751 $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//;
752 } elsif ($TargetPlatform =~ /^m68k-/) {
753 $e =~ s/^\tunlk a6\n//;
755 } elsif ($TargetPlatform =~ /^mips-/) {
756 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
757 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
758 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
759 $e =~ s/^\tj\t\$31\n//;
760 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
761 $e =~ s/^\taddi 1,1,\d+\n//;
762 $e =~ s/^\tcal 1,\d+\(1\)\n//;
763 $e =~ s/^\tlw?z? \d+,\d+\(1\)\n//;
764 $e =~ s/^\tmtlr 0\n//;
767 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
770 print STDERR "WARNING: Epilogue junk?: $e\n" if $e =~ /^\t\s*[^\.\s\n]/
771 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
773 # glue together what's left
775 $c =~ s/\n\t\n/\n/; # junk blank line
779 # On SPARCs, we don't do --- BEGIN/END ---, we just
780 # toss the register-windowing save/restore/ret* instructions
782 if ( $TargetPlatform =~ /^sparc-/ ) {
783 $c =~ s/^\t(save.*|restore|ret|retl)\n//g;
784 # throw away PROLOGUE comments
785 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
788 # On Alphas, the prologue mangling is done a little later (below)
790 # toss all calls to __DISCARD__
791 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
793 # MIPS: that may leave some gratuitous asm macros around
794 # (no harm done; but we get rid of them to be tidier)
795 $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/
796 if $TargetPlatform =~ /^mips-/;
798 # toss stack adjustment after DoSparks
799 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
800 if $TargetPlatform =~ /^m68k-/; # this looks old...
802 if ( $TargetPlatform =~ /^alpha-/ &&
803 ! $magic_rdata_seen &&
804 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
805 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
806 $magic_rdata_seen = 1;
809 # pick some end-things and move them to the next chunk
811 # pin a funny end-thing on (for easier matching):
812 $c .= 'FUNNY#END#THING';
814 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
818 # on x86 we try not to copy any directives into a literal
819 # chunk, rather we keep looking for the next real chunk. This
820 # is because we get things like
822 # .globl blah_closure
828 if ( $TargetPlatform =~ /^(i386|sparc)/ && $to_move =~ /${T_COPY_DIRVS}/ ) {
830 while ( $j < $numchks && $chk[$j] =~ /$T_CONST_LBL/) {
833 if ( $j < $numchks ) {
834 $chk[$j] = $to_move . $chk[$j];
838 elsif ( $i < ($numchks - 1)
839 && ( $to_move =~ /${T_COPY_DIRVS}/
840 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
841 $chk[$i + 1] = $to_move . $chk[$i + 1];
842 # otherwise they're tossed
845 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
848 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
850 # toss all prologue stuff, except for loading gp, and the ..ng address
851 if (($p, $r) = split(/^\t\.prologue/, $c)) {
852 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
853 $keep =~ s/^\t\.frame.*\n/\t.frame \$30,0,\$26,0\n/;
854 $keep =~ s/^\t\.(mask|fmask).*\n//g;
855 $c = $keep . "..ng:\n";
857 print STDERR "malformed code block ($ent)?\n"
860 $c .= "\t.prologue" . $r;
863 $c =~ s/FUNNY#END#THING//;
865 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
867 $chk[$i] = $c; # update w/ convenience copy
870 # open CHUNKS, ">/tmp/chunks2" or die "Cannot open /tmp/chunks2: $!\n";
871 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
874 if ( $TargetPlatform =~ /^alpha-/ ) {
875 # print out the header stuff first
876 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
877 print OUTASM $chk[0];
879 } elsif ( $TargetPlatform =~ /^hppa/ ) {
880 print OUTASM $chk[0];
882 } elsif ( $TargetPlatform =~ /^mips-/ ) {
883 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
885 # get rid of horrible "<dollar>Revision: .*$" strings
886 local(@lines0) = split(/\n/, $chk[0]);
888 while ( $z <= $#lines0 ) {
889 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
892 while ( $z <= $#lines0 ) {
894 last if $lines0[$z] =~ /[,\t]0x0$/;
900 $chk[0] = join("\n", @lines0);
901 $chk[0] =~ s/\n\n+/\n/;
902 print OUTASM $chk[0];
905 # print out all the literal strings next
906 for ($i = 0; $i < $numchks; $i++) {
907 if ( $chkcat[$i] eq 'literal' ) {
908 print OUTASM $T_HDR_literal, $chk[$i];
909 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
911 $chkcat[$i] = 'DONE ALREADY';
915 # on the HPPA, print out all the bss next
916 if ( $TargetPlatform =~ /^hppa/ ) {
917 for ($i = 1; $i < $numchks; $i++) {
918 if ( $chkcat[$i] eq 'bss' ) {
919 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
920 print OUTASM $chk[$i];
922 $chkcat[$i] = 'DONE ALREADY';
927 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
928 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
930 next if $chkcat[$i] eq 'DONE ALREADY';
932 if ( $chkcat[$i] eq 'misc' ) {
933 if ($chk[$i] ne '') {
934 print OUTASM $T_HDR_misc;
935 if ($TargetPlatform =~ /^powerpc-|^rs6000/) {
936 $chksymb[$i] =~ s/://;
937 #new if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
938 #new || $chksymb[$i] =~ /^$.{T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
939 #new { print OUTASM "\t\.globl $chksymb[$i]\n"; }
940 # if ($chksymb[$i] ne '' && $chksymb[$i] !~ /ret_[a-z]/ && $chksymb[$i] !~ /djn_[a-z]/)
941 if ($chksymb[$i] ne '')
942 { print OUTASM "\t\.globl \.$chksymb[$i]\n"; };
943 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
944 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
945 else { $r = $chk[$i]; $printDS = 0; };
946 $chk[$i] = &mangle_powerpc_tailjump($r);
948 &print_doctored($chk[$i], 0);
949 if ($TargetPlatform =~ /^powerpc-|^rs6000-/ && $printDS) {
950 #ok if ($chksymb[$i] !~ /\__stginit_Main/) {
951 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
952 print OUTASM "${p}TOC[tc0], 0\n";
957 } elsif ( $chkcat[$i] eq 'toss' ) {
958 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
960 } elsif ( $chkcat[$i] eq 'data' ) {
961 if ($chk[$i] ne '') {
962 print OUTASM $T_HDR_data;
963 print OUTASM $chk[$i];
966 } elsif ( $chkcat[$i] eq 'consist' ) {
967 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
968 local($consist) = "$1.$2.$3";
970 $consist =~ s/\//./g;
972 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
974 # Using a cygnus-2.7-96q4 gcc build on hppas, the
975 # consistency chunk for ghc_cc_ID often (but not always!)
976 # gets lumped with a bunch of .IMPORT directives containing info on
977 # the code or data space nature of external symbols. We can't
978 # toss these, so once the consistency ID has been turned into
979 # a representable symbol, we substitute it for the symbol
980 # that the string was attached to in the first place (ghc_cc_ID.)
981 # (The original string is also substituted away.)
983 # This change may affect the code output on other platforms in
984 # adverse ways, hence we restrict this hack hppa targets only.
987 if ( $TargetPlatform =~ /^hppa/ ) {
988 $chk[$i] =~ s/^${T_US}ghc.*c_ID$TPOSTLBL/$consist/o;
989 $chk[$i] =~ s/\t$T_hsc_cc_PAT/$T_HDR_misc/o;
990 $consist = $chk[$i]; #clumsily
992 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
994 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
995 # on mips: consistency string is just a v
996 # horrible bunch of .bytes,
997 # which I am too lazy to sort out (WDP 95/05)
999 print STDERR "Couldn't grok consistency: ", $chk[$i];
1002 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
1003 # we can just re-constitute this one...
1004 # NB: we emit _three_ underscores no matter what,
1005 # so ghc-split doesn't have to care.
1006 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
1008 } elsif ( $chkcat[$i] eq 'closure'
1009 || $chkcat[$i] eq 'srt'
1010 || $chkcat[$i] eq 'infotbl'
1011 || $chkcat[$i] eq 'slow'
1012 || $chkcat[$i] eq 'fast' ) { # do them in that order
1013 $symb = $chksymb[$i];
1016 if ( defined($closurechk{$symb}) ) {
1017 print OUTASM $T_HDR_closure;
1018 print OUTASM $chk[$closurechk{$symb}];
1019 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
1023 if ( defined($srtchk{$symb}) ) {
1024 print OUTASM $T_HDR_srt;
1025 print OUTASM $chk[$srtchk{$symb}];
1026 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
1030 if ( defined($infochk{$symb}) ) {
1032 print OUTASM $T_HDR_info;
1033 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1034 if ( !defined($slowchk{$symb}) && defined($fastchk{$symb}) ) {
1035 $fastname = $chk[$fastchk{$symb}];
1036 $fastname =~ s/([_A-Za-z]*_fast\d+):.*(.*\n)*/\1/;
1037 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long $fastname/;
1039 $chk[$infochk{$symb}] =~ s/\.long ([_A-Za-z]\S+_entry)/\.long \.\1/;
1040 $chk[$infochk{$symb}] =~ s/\.long ([A-Za-z]\S+_upd)/\.long \.\1/;
1041 print OUTASM $chk[$infochk{$symb}];
1043 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
1045 # entry code will be put here!
1047 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
1051 if ( defined($slowchk{$symb}) ) {
1053 # teach it to drop through to the fast entry point:
1054 $c = $chk[$slowchk{$symb}];
1056 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1057 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
1058 if ($symb =~ /^[_A-Z]/)
1060 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
1061 print OUTASM "\.csect ${symb}_entry[DS]\n";
1062 print OUTASM "${p}TOC[tc0], 0\n";
1064 $r =~ s/\.csect \.text\[PR\]\n//; # todo: properly - andre
1065 $c = &mangle_powerpc_tailjump($r);
1068 if ( defined($fastchk{$symb}) ) {
1069 if ( $TargetPlatform =~ /^alpha-/ ) {
1070 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1071 } elsif ( $TargetPlatform =~ /^hppa/ ) {
1072 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
1073 } elsif ( $TargetPlatform =~ /^i386-/ ) {
1074 # Reg alloc depending, gcc generated code may jump to the fast entry point via
1075 # a number of registers.
1076 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%edx\n\tjmp\s+\*\%edx\n//;
1077 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%ecx\n\tjmp\s+\*\%ecx\n//;
1078 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%eax\n\tjmp\s+\*\%eax\n//;
1079 # The next two only apply if we're not stealing %esi or %edi.
1080 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%esi\n\tjmp\s+\*\%esi\n// if ($StolenX86Regs < 3);
1081 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%edi\n\tjmp\s+\*\%edi\n// if ($StolenX86Regs < 4);
1082 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1083 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1084 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
1085 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
1086 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
1087 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ ) {
1088 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
1089 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
1090 $c =~ s/^\tcall\s+${T_US}${symb}_fast\d+,.*\n\t\s*nop\n//;
1091 $c =~ s/^\tcall\s+${T_US}${symb}_fast\d+,.*\n(\t\s*[a-z].*\n)/$1/;
1093 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
1097 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
1098 # On alphas, hppa: no very good way to look for "dangling"
1099 # references to fast-entry point.
1100 # (questionable re hppa and mips...)
1101 print STDERR "still has jump to fast entry point:\n$c"
1102 if $c =~ /\b${T_US}${symb}_fast/;
1105 print OUTASM $T_HDR_entry;
1107 &print_doctored($c, 1); # NB: the 1!!!
1109 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1113 if ( defined($fastchk{$symb}) ) {
1114 $c = $chk[$fastchk{$symb}];
1115 if ( ! defined($slowchk{$symb})
1116 # ToDo: the || clause can go once we're no longer
1117 # concerned about producing exactly the same output as before
1118 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1120 print OUTASM $T_HDR_fast;
1122 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1123 local(@lbls) = split(/:/, $c);
1124 $fullname = $lbls[0];
1125 $fullname =~ s/$T_MOVE_DIRVS//g;
1126 if ( $fullname =~ /^[A-Z]/)
1127 { print OUTASM "\t\.globl \.${fullname}\n";
1129 # print OUTASM "\t\.lglobl \.${fullname}\n"; #todo: rm - andre
1131 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1132 $c = &mangle_powerpc_tailjump($c);
1134 &print_doctored($c, 0);
1135 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1138 } elsif ( $chkcat[$i] eq 'vector'
1139 || $chkcat[$i] eq 'direct' ) { # do them in that order
1140 $symb = $chksymb[$i];
1143 if ( defined($vectorchk{$symb}) ) {
1144 print OUTASM $T_HDR_vector;
1145 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1146 if ( $symb =~ /^[A-Z]/) {
1147 print OUTASM "\t\.globl \.${symb}_vtbl\n";
1148 print OUTASM "\t\.globl ${symb}_vtbl\n";
1150 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1151 print OUTASM ".${symb}_vtbl:\n";
1152 print OUTASM $chk[$vectorchk{$symb}];
1154 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1156 # direct return code will be put here!
1157 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1159 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1160 # Alphas: the commented nop is for the splitter, to ensure
1161 # that no module ends with a label as the very last
1162 # thing. (The linker will adjust the label to point
1163 # to the first code word of the next module linked in,
1164 # even if alignment constraints cause the label to move!)
1166 print OUTASM "\t# nop\n";
1169 } elsif ( $chkcat[$i] eq 'toc' ) {
1170 # silly optimisation to print tocs, since they come in groups...
1171 print OUTASM $T_HDR_toc;
1173 while ($chkcat[$j] eq 'toc')
1174 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1177 print OUTASM $chk[$j];
1179 $chkcat[$j] = 'DONE ALREADY';
1184 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1188 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1190 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1191 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1195 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1196 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1201 sub mash_hppa_prologue { # OK, epilogue, too
1204 # toss all prologue stuff
1205 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1207 # Lie about our .CALLINFO
1208 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1215 # toss all epilogue stuff
1216 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1218 # Sorry; we moved the _info stuff to the code segment.
1219 s/_info,DATA/_info,CODE/g;
1226 sub print_doctored {
1227 local($_, $need_fallthru_patch) = @_;
1229 if ( $TargetPlatform !~ /^i386-/
1230 || ! /^\t[a-z]/ # no instructions in here, apparently
1231 || /^${T_US}__stginit_[A-Za-z0-9_]+${T_POST_LBL}/) {
1235 # OK, must do some x86 **HACKING**
1237 local($entry_patch) = '';
1238 local($exit_patch) = '';
1240 # gotta watch out for weird instructions that
1241 # invisibly smash various regs:
1242 # rep* %ecx used for counting
1243 # scas* %edi used for destination index
1244 # cmps* %e[sd]i used for indices
1245 # loop* %ecx used for counting
1250 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1252 # * GCC used an "STG reg" for its own purposes
1254 # * some secret uses of machine reg, requiring STG reg
1255 # to be saved/restored
1257 # The most dangerous "GCC uses" of an "STG reg" are when
1258 # the reg holds the target of a jmp -- it's tricky to
1259 # insert the patch-up code before we get to the target!
1260 # So here we change the jmps:
1262 # --------------------------------------------------------
1263 # it can happen that we have jumps of the form...
1264 # jmp *<something involving %esp>
1266 # jmp <something involving another naughty register...>
1268 # a reasonably-common case is:
1270 # movl $_blah,<bad-reg>
1274 s/^\tmovl\s+\$${T_US}(.*),(\%e[abcd]x)\n\tjmp\s+\*\2/\tjmp $T_US$1/g;
1276 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1277 s/^\tmovl\s+(.*),\s*\%esi\n\tjmp\s+\*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1278 s/^\tjmp\s+\*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1279 s/^\tjmp\s+\*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1280 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1281 if /(jmp|call)\s+.*\%esi/;
1283 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1284 s/^\tmovl\s+(.*),\s*\%edi\n\tjmp\s+\*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1285 s/^\tjmp\s+\*(-?\d*\(.*\%edi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1286 s/^\tjmp\s+\*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1287 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1288 if /(jmp|call)\s+.*\%edi/;
1291 # OK, now we can decide what our patch-up code is going to
1294 # Offsets into register table - you'd better update these magic
1295 # numbers should you change its contents!
1296 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1297 local($OFFSET_Hp)=92;
1299 # Note funky ".=" stuff; we're *adding* to these _patch guys
1300 if ( $StolenX86Regs <= 2
1301 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1302 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1303 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1305 # nothing for call_{entry,exit} because %esi is callee-save
1307 if ( $StolenX86Regs <= 3
1308 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1309 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1310 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1312 # nothing for call_{entry,exit} because %edi is callee-save
1315 # --------------------------------------------------------
1316 # next, here we go with non-%esp patching!
1318 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1320 # Before calling GC we must set up the exit condition before the call
1321 # and entry condition when we come back
1323 # fix _all_ non-local jumps:
1325 s/^\tjmp\s+\*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1326 s/^\tjmp\s+${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1328 s/^(\tjmp\s+.*\n)/$exit_patch$1/g; # here's the fix...
1330 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1331 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1333 if ($StolenX86Regs == 2 ) {
1334 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1335 if /^\t(jmp|call)\s+.*\%e(si|di)/;
1336 } elsif ($StolenX86Regs == 3 ) {
1337 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1338 if /^\t(jmp|call)\s+.*\%edi/;
1341 # --------------------------------------------------------
1342 # that's it -- print it
1344 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1348 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1349 print OUTASM $exit_patch;
1350 # ToDo: make it not print if there is a "jmp" at the end
1356 sub init_FUNNY_THINGS {
1357 %KNOWN_FUNNY_THING = (
1359 # "${T_US}stg_.*{T_POST_LBL}", 1,
1364 The following table reversal is used for both info tables and return
1365 vectors. In both cases, we remove the first entry from the table,
1366 reverse the table, put the label at the end, and paste some code
1367 (that which is normally referred to by the first entry in the table)
1368 right after the table itself. (The code pasting is done elsewhere.)
1372 local($symb, $tbl, $discard1) = @_;
1374 local($before) = '';
1376 local(@imports) = (); # hppa only
1379 local(@lines) = split(/\n/, $tbl);
1382 # Deal with the header...
1383 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1384 $label .= $lines[$i] . "\n",
1385 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1386 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1387 || $lines[$i] =~ /^${T_US}\S+_vtbl${T_POST_LBL}$/o;
1389 $before .= $lines[$i] . "\n"; # otherwise...
1392 # Grab the table data...
1393 if ( $TargetPlatform !~ /^hppa/ ) {
1394 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1395 push(@words, $lines[$i]);
1397 } else { # hppa weirdness
1398 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+(${T_DOT_WORD}|\.IMPORT)/; $i++) {
1399 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1400 push(@imports, $lines[$i]);
1402 # We don't use HP's ``function pointers''
1403 # We just use labels in code space, like normal people
1404 $lines[$i] =~ s/P%//;
1405 push(@words, $lines[$i]);
1410 # now throw away the first word (SRT) iff it is empty.
1411 # The .zero business is for Linux/ELF.
1412 # The .skip business is for Sparc/Solaris/ELF.
1413 # The .blockz business is for HPPA.
1414 if ($discard1 && $words[0] =~ /^\t?(${T_DOT_WORD}\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) {
1418 for (; $i <= $#lines; $i++) {
1419 $after .= $lines[$i] . "\n";
1422 # Alphas: If we have anonymous text (not part of a procedure), the
1423 # linker may complain about missing exception information. Bleh.
1424 # To suppress this, we place a .ent/.end pair around the code.
1425 # At the same time, we have to be careful and not enclose any leading
1426 # .file/.loc directives.
1427 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1428 local ($ident) = $1;
1429 $before =~ s/^((\s*\.(file|loc)\s+[^\n]*\n)*)/$1\t.ent $ident\n/;
1430 $after .= "\t.end $ident\n";
1433 # Alphas: The heroic Simon Marlow found a bug in the Digital UNIX
1434 # assembler (!) wherein .quad constants inside .text sections are
1435 # first narrowed to 32 bits then sign-extended back to 64 bits.
1436 # This obviously screws up our 64-bit bitmaps, so we work around
1437 # the bug by replacing .quad with .align 3 + .long + .long [ccshan]
1438 if ( $TargetPlatform =~ /^alpha-/ ) {
1440 if (/^\s*\.quad\s+([-+0-9].*\S)\s*$/ && length $1 >= 10) {
1441 local ($number) = $1;
1442 if ($number =~ /^([-+])?(0x?)?([0-9]+)$/) {
1443 local ($sign, $base, $digits) = ($1, $2, $3);
1444 $base = (10, 8, 16)[length $base];
1445 local ($hi, $lo) = (0, 0);
1446 foreach $i (split(//, $digits)) {
1447 $j = $lo * $base + $i;
1448 $lo = $j % 4294967296;
1449 $hi = $hi * $base + ($j - $lo) / 4294967296;
1451 ($hi, $lo) = (4294967295 - $hi, 4294967296 - $lo)
1453 $_ = "\t.align 3\n\t.long $lo\n\t.long $hi\n";
1454 # printf STDERR "TURNING %s into 0x %08x %08x\n", $number, $hi, $lo;
1456 print STDERR "Cannot handle \".quad $number\" in info table\n";
1464 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1465 . join("\n", @words) . "\n"
1468 # print STDERR "before=$before\n";
1469 # print STDERR "label=$label\n";
1470 # print STDERR "words=",(reverse @words),"\n";
1471 # print STDERR "after=$after\n";
1477 The HP is a major nuisance. The threaded code mangler moved info
1478 tables from data space to code space, but unthreaded code in the RTS
1479 still has references to info tables in data space. Since the HP
1480 linker is very precise about where symbols live, we need to patch the
1481 references in the unthreaded RTS as well.
1484 sub mini_mangle_asm_hppa {
1485 local($in_asmf, $out_asmf) = @_;
1487 open(INASM, "< $in_asmf")
1488 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1489 open(OUTASM,"> $out_asmf")
1490 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1493 s/_info,DATA/_info,CODE/; # Move _info references to code space
1499 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1500 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1506 sub mini_mangle_asm_powerpc {
1507 local($in_asmf, $out_asmf) = @_;
1509 open(INASM, "< $in_asmf")
1510 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1511 open(OUTASM,"> $out_asmf")
1512 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1515 s/long _PRStart/long ._PRStart/;
1516 s/long _PRIn_/long ._PRIn_/;
1517 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1518 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1519 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1520 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1521 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1522 s/\.tc EnterNodeCode\[TC]\,EnterNodeCode\[DS\]/\.tc EnterNodeCode\[TC]\,.EnterNodeCode/; # CONC
1523 s/\.tc CheckHeapCode\[TC]\,CheckHeapCode\[DS\]/\.tc CheckHeapCode\[TC]\,.CheckHeapCode/; # CONC
1528 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1529 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1532 sub mangle_powerpc_tailjump {
1534 local($maybe_more) = 1;
1535 while (($c =~ /\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1538 $lcsymb =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1539 # the checks for r1 and r2 are mostly paranoia...
1541 $r1 =~ s/(.*\n)*\tlw?z? (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1543 $r2 =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1546 $c =~ s/((.*\n)*)\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1554 sub tidy_up_and_die {
1555 local($return_val, $msg) = @_;
1557 exit (($return_val == 0) ? 0 : 1);