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";
116 $T_create_word = "\t.quad";
118 #--------------------------------------------------------#
119 } elsif ( $TargetPlatform =~ /^hppa/ ) {
121 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
122 $T_US = ''; # _ if symbols have an underscore on the front
123 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
124 $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like
127 $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)';
128 $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)';
130 $T_hsc_cc_PAT = '\.STRING.*\)(hsc|cc) (.*)\\\\x09(.*)\\\\x00"';
131 $T_DOT_WORD = '\.(blockz|word|half|byte)';
132 $T_DOT_GLOBAL = '^\s+\.EXPORT';
133 $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
134 $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
135 $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
136 $T_HDR_consist = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
137 $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
138 $T_HDR_srt = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
139 $T_HDR_info = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
140 $T_HDR_entry = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
141 $T_HDR_fast = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
142 $T_HDR_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
143 $T_HDR_direct = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
144 $T_create_word = "\t.word";
146 #--------------------------------------------------------#
147 } elsif ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd2|openbsd|nextstep3|cygwin32|mingw32)$/ ) {
148 # NeXT added but not tested. CaS
150 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
151 $T_US = '_'; # _ if symbols have an underscore on the front
152 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
153 $T_CONST_LBL = '^LC(\d+):$';
155 $T_X86_PRE_LLBL_PAT = 'L';
156 $T_X86_PRE_LLBL = 'L';
157 $T_X86_BADJMP = '^\tjmp [^L\*]';
159 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*)\n)';
160 $T_COPY_DIRVS = '\.(globl|stab)';
161 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
162 $T_DOT_WORD = '\.(long|word|value|byte|space)';
163 $T_DOT_GLOBAL = '\.globl';
164 $T_HDR_literal = "\.text\n\t\.align 2\n";
165 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
166 $T_HDR_data = "\.data\n\t\.align 2\n";
167 $T_HDR_consist = "\.text\n";
168 $T_HDR_closure = "\.data\n\t\.align 2\n";
169 $T_HDR_closure = "\.data\n\t\.align 2\n\t.long 0\n" if ( $TargetPlatform =~ /.*-mingw32$/ );
170 $T_HDR_srt = "\.text\n\t\.align 2\n";
171 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
172 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
173 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
174 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
175 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
176 $T_create_word = "\t.word";
178 #--------------------------------------------------------#
179 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|freebsd|netbsd)$/ ) {
181 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
182 $T_US = ''; # _ if symbols have an underscore on the front
183 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
184 ($TargetPlatform =~ /-(linux|freebsd|netbsd)$/) ? '#' : '/' ;
185 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
187 $T_X86_PRE_LLBL_PAT = '\.L';
188 $T_X86_PRE_LLBL = '.L';
189 $T_X86_BADJMP = '^\tjmp\s+[^\.\*]';
191 $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)';
192 $T_COPY_DIRVS = '\.(globl)';
194 if ( $TargetPlatform =~ /freebsd|netbsd/ ) {
195 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
197 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
200 $T_DOT_WORD = '\.(long|value|byte|zero)';
201 $T_DOT_GLOBAL = '\.globl';
202 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
203 $T_HDR_misc = "\.text\n\t\.align 4\n";
204 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
205 $T_HDR_consist = "\.text\n";
206 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
207 $T_HDR_srt = "\.text\n\t\.align 4\n"; # ToDo: change align?
208 $T_HDR_info = "\.text\n\t\.align 4\n"; # NB: requires padding
209 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
210 $T_HDR_fast = "\.text\n\t\.align 4\n";
211 $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding
212 $T_HDR_direct = "\.text\n\t\.align 4\n";
213 $T_create_word = "\t.word";
215 #--------------------------------------------------------#
216 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
218 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
219 $T_US = '_'; # _ if symbols have an underscore on the front
220 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
221 $T_CONST_LBL = '^LC(\d+):$';
224 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
225 $T_COPY_DIRVS = '\.(globl|proc|stab)';
226 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
228 $T_DOT_WORD = '\.long';
229 $T_DOT_GLOBAL = '\.globl';
230 $T_HDR_literal = "\.text\n\t\.even\n";
231 $T_HDR_misc = "\.text\n\t\.even\n";
232 $T_HDR_data = "\.data\n\t\.even\n";
233 $T_HDR_consist = "\.text\n";
234 $T_HDR_closure = "\.data\n\t\.even\n";
235 $T_HDR_srt = "\.text\n\t\.even\n";
236 $T_HDR_info = "\.text\n\t\.even\n";
237 $T_HDR_entry = "\.text\n\t\.even\n";
238 $T_HDR_fast = "\.text\n\t\.even\n";
239 $T_HDR_vector = "\.text\n\t\.even\n";
240 $T_HDR_direct = "\.text\n\t\.even\n";
241 $T_create_word = "\t.long";
243 #--------------------------------------------------------#
244 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
246 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
247 $T_US = ''; # _ if symbols have an underscore on the front
248 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
249 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
252 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
253 $T_COPY_DIRVS = '\.(globl|ent)';
255 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
256 $T_DOT_WORD = '\.word';
257 $T_DOT_GLOBAL = '^\t\.globl';
258 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
259 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
260 $T_HDR_data = "\t\.data\n\t\.align 2\n";
261 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
262 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
263 $T_HDR_srt = "\t\.text\n\t\.align 2\n";
264 $T_HDR_info = "\t\.text\n\t\.align 2\n";
265 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
266 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
267 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
268 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
269 $T_create_word = "\t.word";
271 #--------------------------------------------------------#
272 } elsif ( $TargetPlatform =~ /^powerpc-.*|^rs6000-.*/ ) {
274 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
275 $T_US = ''; # _ if symbols have an underscore on the front
276 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
277 $T_CONST_LBL = 'NOT APPLICABLE'; # regexp for what such a lbl looks like
280 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
281 $T_COPY_DIRVS = '\.(l?globl)';
283 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
284 $T_DOT_WORD = '\.long';
285 $T_DOT_GLOBAL = '\.globl';
286 $T_HDR_toc = "\.toc\n";
287 $T_HDR_literal = "\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
288 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
289 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
290 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
291 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
292 $T_HDR_srt = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
293 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
294 $T_HDR_entry = "# entry\n\.csect \.text[PR]\n\t\.align 2\n";
295 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
296 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
297 $T_HDR_direct = "# direct\n";
298 $T_create_word = "\t.long";
300 #--------------------------------------------------------#
301 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
303 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
304 $T_US = ''; # _ if symbols have an underscore on the front
305 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
306 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
309 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
310 $T_COPY_DIRVS = '\.(global|proc|stab)';
312 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
313 $T_DOT_WORD = '\.(word|byte|half|skip|uahalf|uaword)';
314 $T_DOT_GLOBAL = '^\t\.global';
315 $T_HDR_literal = "\.text\n\t\.align 8\n";
316 $T_HDR_misc = "\.text\n\t\.align 4\n";
317 $T_HDR_data = "\.data\n\t\.align 8\n";
318 $T_HDR_consist = "\.text\n";
319 $T_HDR_closure = "\.data\n\t\.align 4\n";
320 $T_HDR_srt = "\.data\n\t\.align 4\n";
321 $T_HDR_info = "\.text\n\t\.align 4\n";
322 $T_HDR_entry = "\.text\n\t\.align 4\n";
323 $T_HDR_fast = "\.text\n\t\.align 4\n";
324 $T_HDR_vector = "\.text\n\t\.align 4\n";
325 $T_HDR_direct = "\.text\n\t\.align 4\n";
326 $T_create_word = "\t.word";
328 #--------------------------------------------------------#
329 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
331 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
332 $T_US = '_'; # _ if symbols have an underscore on the front
333 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
334 $T_CONST_LBL = '^LC(\d+):$';
337 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
338 $T_COPY_DIRVS = '\.(global|proc|stab)';
339 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
341 $T_DOT_WORD = '\.word';
342 $T_DOT_GLOBAL = '^\t\.global';
343 $T_HDR_literal = "\.text\n\t\.align 8\n";
344 $T_HDR_misc = "\.text\n\t\.align 4\n";
345 $T_HDR_data = "\.data\n\t\.align 8\n";
346 $T_HDR_consist = "\.text\n";
347 $T_HDR_closure = "\.data\n\t\.align 4\n";
348 $T_HDR_srt = "\.data\n\t\.align 4\n";
349 $T_HDR_info = "\.text\n\t\.align 4\n";
350 $T_HDR_entry = "\.text\n\t\.align 4\n";
351 $T_HDR_fast = "\.text\n\t\.align 4\n";
352 $T_HDR_vector = "\.text\n\t\.align 4\n";
353 $T_HDR_direct = "\.text\n\t\.align 4\n";
354 $T_create_word = "\t.word";
356 #--------------------------------------------------------#
358 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
363 print STDERR "T_STABBY: $T_STABBY\n";
364 print STDERR "T_US: $T_US\n";
365 print STDERR "T_PRE_APP: $T_PRE_APP\n";
366 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
367 print STDERR "T_POST_LBL: $T_POST_LBL\n";
368 if ( $TargetPlatform =~ /^i386-/ ) {
369 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
370 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
371 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
373 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
374 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
375 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
376 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
377 print STDERR "T_HDR_literal: $T_HDR_literal\n";
378 print STDERR "T_HDR_misc: $T_HDR_misc\n";
379 print STDERR "T_HDR_data: $T_HDR_data\n";
380 print STDERR "T_HDR_consist: $T_HDR_consist\n";
381 print STDERR "T_HDR_closure: $T_HDR_closure\n";
382 print STDERR "T_HDR_info: $T_HDR_info\n";
383 print STDERR "T_HDR_entry: $T_HDR_entry\n";
384 print STDERR "T_HDR_fast: $T_HDR_fast\n";
385 print STDERR "T_HDR_vector: $T_HDR_vector\n";
386 print STDERR "T_HDR_direct: $T_HDR_direct\n";
392 %************************************************************************
394 \subsection{Mangle away}
396 %************************************************************************
400 local($in_asmf, $out_asmf) = @_;
402 # multi-line regexp matching:
407 &init_TARGET_STUFF();
408 &init_FUNNY_THINGS();
410 open(INASM, "< $in_asmf")
411 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
412 open(OUTASM,"> $out_asmf")
413 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
415 # read whole file, divide into "chunks":
416 # record some info about what we've found...
418 @chk = (); # contents of the chunk
419 $numchks = 0; # number of them
420 @chkcat = (); # what category of thing in each chunk
421 @chksymb = (); # what symbol(base) is defined in this chunk
422 %slowchk = (); # ditto, its regular "slow" entry code
423 %fastchk = (); # ditto, fast entry code
424 %closurechk = (); # ditto, the (static) closure
425 %srtchk = (); # ditto, its SRT (for top-level things)
426 %infochk = (); # given a symbol base, say what chunk its info tbl is in
427 %vectorchk = (); # ditto, return vector table
428 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
430 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
433 tr/\r//d if $TargetPlatform =~ /-mingw32$/; # In case Perl doesn't convert line endings
434 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
435 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
436 next if /^\t\.def.*endef$/;
437 next if /${T_PRE_APP}(NO_)?APP/o;
438 next if /^;/ && $TargetPlatform =~ /^hppa/;
440 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc|rs6000)-/;
442 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-|^rs6000-/;
444 if ( $TargetPlatform =~ /^mips-/
445 && /^\t\.(globl\S+\.text|comm\t)/ ) {
446 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
448 # As a temporary solution for compiling "foreign export" declarations,
449 # we use global variables to pass arguments from C to STG land.
450 # These declarations live in the .hc file and not in the generated C
451 # stub file, so we let them pass through here.
452 } elsif ( /^\t\.comm\t__fexp_.*$/ ) {
454 $chkcat[$i] = 'data';
457 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
458 # duplicated from the bottom
462 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
463 # Alphas: Local labels not to be confused with new chunks
466 # NB: all the rest start with a non-space
468 } elsif ( $TargetPlatform =~ /^mips-/
469 && /^\d+:/ ) { # a funny-looking very-local label
472 } elsif ( /$T_CONST_LBL/o ) {
474 $chkcat[$i] = 'literal';
477 } elsif ( /^${T_US}__stg_split_marker(\d*)${T_POST_LBL}$/o ) {
479 $chkcat[$i] = 'splitmarker';
482 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
485 $chkcat[$i] = 'infotbl';
486 $chksymb[$i] = $symb;
488 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
490 $infochk{$symb} = $i;
492 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(entry|ret)${T_POST_LBL}$/o ) {
494 $chkcat[$i] = 'slow';
499 } elsif ( /^${T_US}([A-Za-z0-9_]+)_fast\d*${T_POST_LBL}$/o ) {
501 $chkcat[$i] = 'fast';
506 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
508 $chkcat[$i] = 'closure';
511 $closurechk{$1} = $i;
513 } elsif ( /^${T_US}([A-Za-z0-9_]+)_srt${T_POST_LBL}$/o ) {
520 } elsif ( /^${T_US}([A-Za-z0-9_]+)_ct${T_POST_LBL}$/o ) {
522 $chkcat[$i] = 'data';
525 } elsif ( /^${T_US}ghc.*c_ID${T_POST_LBL}/o ) {
527 $chkcat[$i] = 'consist';
529 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
532 } elsif ( /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
533 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
534 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
535 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
538 $chkcat[$i] = 'data';
541 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
546 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^LC\.\.([0-9]+)/ ) {
551 } elsif ( /^${T_US}([A-Za-z0-9_]+)_cc(s)?${T_POST_LBL}$/o ) {
552 # all CC_ symbols go in the data section...
554 $chkcat[$i] = 'data';
557 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(alt|dflt)${T_POST_LBL}$/o ) {
559 $chkcat[$i] = 'misc';
562 #$chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-|^rs6000-/) ; #rm andre
564 } elsif ( /^${T_US}([A-Za-z0-9_]+)_vtbl${T_POST_LBL}$/o ) {
566 $chkcat[$i] = 'vector';
571 # As a temporary solution for compiling "foreign export" declarations,
572 # we use global variables to pass arguments from C to STG land.
573 # These declarations live in the .hc file and not in the generated C
574 # stub file, so we let them pass through here.
575 } elsif ( /^[\t ]+\.comm[\t ]+__fexp_.*$/ ) {
577 $chkcat[$i] = 'data';
580 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
581 && /^[A-Za-z0-9][A-Za-z0-9_]*:/ ) {
582 # Some Solaris system headers contain function definitions (as
583 # opposed to mere prototypes), which end up in the .hc file when
584 # a Haskell module foreign imports the corresponding system
585 # functions (most notably stat()). We put them into the text
586 # segment. Note that this currently does not extend to function
587 # names starting with an underscore.
590 $chkcat[$i] = 'misc';
593 } elsif ( /^${T_US}[A-Za-z0-9_]/o
594 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
596 && ( $TargetPlatform !~ /^powerpc|^rs6000/ # ditto
597 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
600 print STDERR "Funny global thing?: $_"
601 unless $KNOWN_FUNNY_THING{$thing}
602 || /^${T_US}stg_.*${T_POST_LBL}$/o # RTS internals
603 || /^${T_US}__fexp_.*${T_POST_LBL}$/o # foreign export
604 || /^${T_US}__stginit.*${T_POST_LBL}$/o # __stginit<module>
605 || /^${T_US}.*_btm${T_POST_LBL}$/o # large bitmaps
606 || /^${T_US}.*_closure_tbl${T_POST_LBL}$/o # closure tables
607 || /^_uname:/o; # x86/Solaris2
609 $chkcat[$i] = 'misc';
610 if ($TargetPlatform =~ /^powerpc-|^rs6000-/)
611 { $chksymb[$i] = $thing; }
612 else { $chksymb[$i] = ''; };
614 } else { # simple line (duplicated at the top)
619 $numchks = $#chk + 1;
621 # open CHUNKS, ">/tmp/chunks1" or die "Cannot open /tmp/chunks1: $!\n";
622 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
625 # the division into chunks is imperfect;
626 # we throw some things over the fence into the next
629 # also, there are things we would like to know
630 # about the whole module before we start spitting
633 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
634 local($FIRST_TOSSABLE ) = ($TargetPlatform =~ /^(hppa|mips-)/) ? 1 : 0;
636 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
638 # Alphas: NB: we start meddling at chunk 1, not chunk 0
639 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
640 # spits a ".quad 0" in after the very first ".rdata"; we
641 # detect this special case (tossing the ".quad 0")!
642 local($magic_rdata_seen) = 0;
644 # HPPAs, MIPSen: also start medding at chunk 1
646 if ($TargetPlatform =~ /^powerpc|^rs6000/) {
647 print OUTASM $T_HDR_toc; # yes, we have to put a .toc
648 # in the beginning of every file!
649 %tocequiv = (); # maps toc symbol number to toc symbol
650 %revtocequiv = (); # maps toc symbol to toc symbol number
651 for ($i = 1; $i < $numchks; $i++) {
652 $chk[$i] =~ s/\[RW\]//g;
653 $chk[$i] =~ s/\[DS\]//g;
654 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
656 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
657 #ToDo: instead of all these changes, just fix mangle_powerpc_tailjump and delete/ignore these tocs?
658 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
659 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
660 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
661 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
662 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(alt_\S+)/\t\.tc \1\[TC\],\.\2/;
663 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
665 $tocnumber = $chksymb[$i];
667 $tocsymb =~ s/^LC\.\.\d+:\n//;
668 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
669 $tocequiv{$tocnumber} = $tocsymb;
671 } elsif ( $chkcat[$i] eq 'toc' && $chk[$i] =~ /\.byte/ ) {
672 $chkcat[$i] = 'literal';
677 for ($i = $FIRST_TOSSABLE; $i < $numchks; $i++) {
678 $c = $chk[$i]; # convenience copy
680 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
682 # toss all prologue stuff; HPPA is pretty weird
684 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
686 # be slightly paranoid to make sure there's
687 # nothing surprising in there
688 if ( $c =~ /--- BEGIN ---/ ) {
689 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
691 if ($TargetPlatform =~ /^i386-/) {
692 $p =~ s/^\tpushl\s+\%edi\n//;
693 $p =~ s/^\tpushl\s+\%esi\n//;
694 $p =~ s/^\tpushl\s+\%ebx\n//;
695 $p =~ s/^\tsubl\s+\$\d+,\s*\%esp\n//;
696 $p =~ s/^\tmovl\s+\$\d+,\s*\%eax\n\tcall\s+__alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
697 } elsif ($TargetPlatform =~ /^m68k-/) {
698 $p =~ s/^\tlink a6,#-?\d.*\n//;
699 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
700 # The above showed up in the asm code,
701 # so I added it here.
702 # I hope it's correct.
704 $p =~ s/^\tmovel d2,sp\@-\n//;
705 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
706 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
707 } elsif ($TargetPlatform =~ /^mips-/) {
708 # the .frame/.mask/.fmask that we use is the same
709 # as that produced by GCC for miniInterpret; this
710 # gives GDB some chance of figuring out what happened
711 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
712 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
713 $p =~ s/^\t\.(mask|fmask).*\n//g;
714 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
715 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
716 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
717 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
718 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
719 $p =~ s/__FRAME__/$FRAME/;
720 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000/) {
721 $p =~ s/^\tmflr 0\n//;
722 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
723 $p =~ s/^\tstw? 0,\d+\(1\)\n//g;
724 $p =~ s/^\tstw? 1,\d+\(1\)\n//g; #mc
725 $p =~ s/^\tlw?z 0,0\(1\)\n//g; #mc
726 $p =~ s/^\tstw?u 1,-\d+\(1\)\n//;
727 $p =~ s/^\tstw? \d+,-\d+\(1\)\n//g;
728 $p =~ s/^\tstfd \d+,-\d+\(1\)\n//g;
730 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
733 # HWL HACK: dont die, just print a warning
734 #print stderr "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
735 # && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
736 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
737 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
739 # glue together what's left
741 $c =~ s/\n\t\n/\n/; # junk blank line
745 if ( $TargetPlatform =~ /^mips-/ ) {
746 # MIPS: first, this basic sequence may occur "--- END ---" or not
747 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
750 # toss all epilogue stuff; again, paranoidly
751 if ( $c =~ /--- END ---/ ) {
752 if (($r, $e) = split(/--- END ---/, $c)) {
753 if ($TargetPlatform =~ /^i386-/) {
755 $e =~ s/^\tpopl\s+\%edi\n//;
756 $e =~ s/^\tpopl\s+\%esi\n//;
757 $e =~ s/^\tpopl\s+\%edx\n//;
758 $e =~ s/^\tpopl\s+\%ecx\n//;
759 $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//;
760 $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//;
761 } elsif ($TargetPlatform =~ /^m68k-/) {
762 $e =~ s/^\tunlk a6\n//;
764 } elsif ($TargetPlatform =~ /^mips-/) {
765 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
766 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
767 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
768 $e =~ s/^\tj\t\$31\n//;
769 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
770 $e =~ s/^\taddi 1,1,\d+\n//;
771 $e =~ s/^\tcal 1,\d+\(1\)\n//;
772 $e =~ s/^\tlw?z? \d+,\d+\(1\)\n//;
773 $e =~ s/^\tmtlr 0\n//;
776 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
779 print STDERR "WARNING: Epilogue junk?: $e\n" if $e =~ /^\t\s*[^\.\s\n]/
780 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
782 # glue together what's left
784 $c =~ s/\n\t\n/\n/; # junk blank line
788 # On SPARCs, we don't do --- BEGIN/END ---, we just
789 # toss the register-windowing save/restore/ret* instructions
791 if ( $TargetPlatform =~ /^sparc-/ ) {
792 $c =~ s/^\t(save.*|restore|ret|retl)\n//g;
793 # throw away PROLOGUE comments
794 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
797 # On Alphas, the prologue mangling is done a little later (below)
799 # toss all calls to __DISCARD__
800 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
802 # MIPS: that may leave some gratuitous asm macros around
803 # (no harm done; but we get rid of them to be tidier)
804 $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/
805 if $TargetPlatform =~ /^mips-/;
807 # toss stack adjustment after DoSparks
808 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
809 if $TargetPlatform =~ /^m68k-/; # this looks old...
811 if ( $TargetPlatform =~ /^alpha-/ &&
812 ! $magic_rdata_seen &&
813 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
814 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
815 $magic_rdata_seen = 1;
818 # pick some end-things and move them to the next chunk
820 # pin a funny end-thing on (for easier matching):
821 $c .= 'FUNNY#END#THING';
823 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
827 # on x86 we try not to copy any directives into a literal
828 # chunk, rather we keep looking for the next real chunk. This
829 # is because we get things like
831 # .globl blah_closure
837 if ( $TargetPlatform =~ /^(i386|sparc)/ && $to_move =~ /${T_COPY_DIRVS}/ ) {
839 while ( $j < $numchks && $chk[$j] =~ /$T_CONST_LBL/) {
842 if ( $j < $numchks ) {
843 $chk[$j] = $to_move . $chk[$j];
847 elsif ( $i < ($numchks - 1)
848 && ( $to_move =~ /${T_COPY_DIRVS}/
849 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
850 $chk[$i + 1] = $to_move . $chk[$i + 1];
851 # otherwise they're tossed
854 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
857 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
859 # toss all prologue stuff, except for loading gp, and the ..ng address
860 if (($p, $r) = split(/^\t\.prologue/, $c)) {
861 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
862 $keep =~ s/^\t\.frame.*\n/\t.frame \$30,0,\$26,0\n/;
863 $keep =~ s/^\t\.(mask|fmask).*\n//g;
864 $c = $keep . "..ng:\n";
866 print STDERR "malformed code block ($ent)?\n"
869 $c .= "\t.prologue" . $r;
872 $c =~ s/FUNNY#END#THING//;
874 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
876 $chk[$i] = $c; # update w/ convenience copy
879 # open CHUNKS, ">/tmp/chunks2" or die "Cannot open /tmp/chunks2: $!\n";
880 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
883 if ( $TargetPlatform =~ /^alpha-/ ) {
884 # print out the header stuff first
885 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
886 print OUTASM $chk[0];
888 } elsif ( $TargetPlatform =~ /^hppa/ ) {
889 print OUTASM $chk[0];
891 } elsif ( $TargetPlatform =~ /^mips-/ ) {
892 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
894 # get rid of horrible "<dollar>Revision: .*$" strings
895 local(@lines0) = split(/\n/, $chk[0]);
897 while ( $z <= $#lines0 ) {
898 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
901 while ( $z <= $#lines0 ) {
903 last if $lines0[$z] =~ /[,\t]0x0$/;
909 $chk[0] = join("\n", @lines0);
910 $chk[0] =~ s/\n\n+/\n/;
911 print OUTASM $chk[0];
914 # print out all the literal strings next
915 for ($i = 0; $i < $numchks; $i++) {
916 if ( $chkcat[$i] eq 'literal' ) {
917 print OUTASM $T_HDR_literal, $chk[$i];
918 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
920 $chkcat[$i] = 'DONE ALREADY';
924 # on the HPPA, print out all the bss next
925 if ( $TargetPlatform =~ /^hppa/ ) {
926 for ($i = 1; $i < $numchks; $i++) {
927 if ( $chkcat[$i] eq 'bss' ) {
928 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
929 print OUTASM $chk[$i];
931 $chkcat[$i] = 'DONE ALREADY';
936 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
937 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
939 next if $chkcat[$i] eq 'DONE ALREADY';
941 if ( $chkcat[$i] eq 'misc' ) {
942 if ($chk[$i] ne '') {
943 print OUTASM $T_HDR_misc;
944 if ($TargetPlatform =~ /^powerpc-|^rs6000/) {
945 $chksymb[$i] =~ s/://;
946 #new if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
947 #new || $chksymb[$i] =~ /^$.{T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
948 #new { print OUTASM "\t\.globl $chksymb[$i]\n"; }
949 # if ($chksymb[$i] ne '' && $chksymb[$i] !~ /ret_[a-z]/ && $chksymb[$i] !~ /djn_[a-z]/)
950 if ($chksymb[$i] ne '')
951 { print OUTASM "\t\.globl \.$chksymb[$i]\n"; };
952 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
953 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
954 else { $r = $chk[$i]; $printDS = 0; };
955 $chk[$i] = &mangle_powerpc_tailjump($r);
957 &print_doctored($chk[$i], 0);
958 if ($TargetPlatform =~ /^powerpc-|^rs6000-/ && $printDS) {
959 #ok if ($chksymb[$i] !~ /\__stginit_Main/) {
960 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
961 print OUTASM "${p}TOC[tc0], 0\n";
966 } elsif ( $chkcat[$i] eq 'toss' ) {
967 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
969 } elsif ( $chkcat[$i] eq 'data' ) {
970 if ($chk[$i] ne '') {
971 print OUTASM $T_HDR_data;
972 print OUTASM $chk[$i];
975 } elsif ( $chkcat[$i] eq 'consist' ) {
976 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
977 local($consist) = "$1.$2.$3";
979 $consist =~ s/\//./g;
981 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
983 # Using a cygnus-2.7-96q4 gcc build on hppas, the
984 # consistency chunk for ghc_cc_ID often (but not always!)
985 # gets lumped with a bunch of .IMPORT directives containing info on
986 # the code or data space nature of external symbols. We can't
987 # toss these, so once the consistency ID has been turned into
988 # a representable symbol, we substitute it for the symbol
989 # that the string was attached to in the first place (ghc_cc_ID.)
990 # (The original string is also substituted away.)
992 # This change may affect the code output on other platforms in
993 # adverse ways, hence we restrict this hack hppa targets only.
996 if ( $TargetPlatform =~ /^hppa/ ) {
997 $chk[$i] =~ s/^${T_US}ghc.*c_ID$TPOSTLBL/$consist/o;
998 $chk[$i] =~ s/\t$T_hsc_cc_PAT/$T_HDR_misc/o;
999 $consist = $chk[$i]; #clumsily
1001 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
1003 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
1004 # on mips: consistency string is just a v
1005 # horrible bunch of .bytes,
1006 # which I am too lazy to sort out (WDP 95/05)
1008 print STDERR "Couldn't grok consistency: ", $chk[$i];
1011 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
1012 # we can just re-constitute this one...
1013 # NB: we emit _three_ underscores no matter what,
1014 # so ghc-split doesn't have to care.
1015 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
1017 } elsif ( $chkcat[$i] eq 'closure'
1018 || $chkcat[$i] eq 'srt'
1019 || $chkcat[$i] eq 'infotbl'
1020 || $chkcat[$i] eq 'slow'
1021 || $chkcat[$i] eq 'fast' ) { # do them in that order
1022 $symb = $chksymb[$i];
1025 if ( defined($closurechk{$symb}) ) {
1026 print OUTASM $T_HDR_closure;
1027 print OUTASM $chk[$closurechk{$symb}];
1028 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
1032 if ( defined($srtchk{$symb}) ) {
1033 print OUTASM $T_HDR_srt;
1034 print OUTASM $chk[$srtchk{$symb}];
1035 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
1039 if ( defined($infochk{$symb}) ) {
1041 print OUTASM $T_HDR_info;
1042 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1043 if ( !defined($slowchk{$symb}) && defined($fastchk{$symb}) ) {
1044 $fastname = $chk[$fastchk{$symb}];
1045 $fastname =~ s/([_A-Za-z]*_fast\d+):.*(.*\n)*/\1/;
1046 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long $fastname/;
1048 $chk[$infochk{$symb}] =~ s/\.long ([_A-Za-z]\S+_entry)/\.long \.\1/;
1049 $chk[$infochk{$symb}] =~ s/\.long ([A-Za-z]\S+_upd)/\.long \.\1/;
1050 print OUTASM $chk[$infochk{$symb}];
1052 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
1054 # entry code will be put here!
1056 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
1060 if ( defined($slowchk{$symb}) ) {
1062 # teach it to drop through to the fast entry point:
1063 $c = $chk[$slowchk{$symb}];
1065 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1066 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
1067 if ($symb =~ /^[_A-Z]/)
1069 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
1070 print OUTASM "\.csect ${symb}_entry[DS]\n";
1071 print OUTASM "${p}TOC[tc0], 0\n";
1073 $r =~ s/\.csect \.text\[PR\]\n//; # todo: properly - andre
1074 $c = &mangle_powerpc_tailjump($r);
1077 if ( defined($fastchk{$symb}) ) {
1078 if ( $TargetPlatform =~ /^alpha-/ ) {
1079 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1080 } elsif ( $TargetPlatform =~ /^hppa/ ) {
1081 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
1082 } elsif ( $TargetPlatform =~ /^i386-/ ) {
1083 # Reg alloc depending, gcc generated code may jump to the fast entry point via
1084 # a number of registers.
1085 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%edx\n\tjmp\s+\*\%edx\n//;
1086 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%ecx\n\tjmp\s+\*\%ecx\n//;
1087 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%eax\n\tjmp\s+\*\%eax\n//;
1088 # The next two only apply if we're not stealing %esi or %edi.
1089 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%esi\n\tjmp\s+\*\%esi\n// if ($StolenX86Regs < 3);
1090 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%edi\n\tjmp\s+\*\%edi\n// if ($StolenX86Regs < 4);
1091 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1092 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1093 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
1094 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
1095 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
1096 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ ) {
1097 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
1098 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
1099 $c =~ s/^\tcall\s+${T_US}${symb}_fast\d+,.*\n\t\s*nop\n//;
1100 $c =~ s/^\tcall\s+${T_US}${symb}_fast\d+,.*\n(\t\s*[a-z].*\n)/$1/;
1102 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
1106 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
1107 # On alphas, hppa: no very good way to look for "dangling"
1108 # references to fast-entry point.
1109 # (questionable re hppa and mips...)
1110 print STDERR "still has jump to fast entry point:\n$c"
1111 if $c =~ /\b${T_US}${symb}_fast/;
1114 print OUTASM $T_HDR_entry;
1116 &print_doctored($c, 1); # NB: the 1!!!
1118 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1122 if ( defined($fastchk{$symb}) ) {
1123 $c = $chk[$fastchk{$symb}];
1124 if ( ! defined($slowchk{$symb})
1125 # ToDo: the || clause can go once we're no longer
1126 # concerned about producing exactly the same output as before
1127 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1129 print OUTASM $T_HDR_fast;
1131 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1132 local(@lbls) = split(/:/, $c);
1133 $fullname = $lbls[0];
1134 $fullname =~ s/$T_MOVE_DIRVS//g;
1135 if ( $fullname =~ /^[A-Z]/)
1136 { print OUTASM "\t\.globl \.${fullname}\n";
1138 # print OUTASM "\t\.lglobl \.${fullname}\n"; #todo: rm - andre
1140 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1141 $c = &mangle_powerpc_tailjump($c);
1143 &print_doctored($c, 0);
1144 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1147 } elsif ( $chkcat[$i] eq 'vector'
1148 || $chkcat[$i] eq 'direct' ) { # do them in that order
1149 $symb = $chksymb[$i];
1152 if ( defined($vectorchk{$symb}) ) {
1153 print OUTASM $T_HDR_vector;
1154 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1155 if ( $symb =~ /^[A-Z]/) {
1156 print OUTASM "\t\.globl \.${symb}_vtbl\n";
1157 print OUTASM "\t\.globl ${symb}_vtbl\n";
1159 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1160 print OUTASM ".${symb}_vtbl:\n";
1161 print OUTASM $chk[$vectorchk{$symb}];
1163 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1164 # DO NOT DELETE THE NEXT LINE. It fixes a rather subtle GC bug
1165 # which showed up as a segfault reported by Ryszard Kubiak.
1166 # Problem is with vector tables. They wind up as follows:
1168 # .word some-other-word
1170 # Problem is that we want the label fooble_vtbl to be considered
1171 # in the same section as the vtbl itself, but the label actually
1172 # lives at the next word along. If a data segment should happen
1173 # to immediately follow the vtbl, as it can in GHCi, the label will
1174 # be malclassified as in the data rather than text segment (during
1175 # GC), and so we will regard references to it as static closure
1176 # pointers rather than as code pointers, which is an error which
1177 # usually crashes the garbage collectors.
1178 # To fix this, we place a dummy word after the label, so as to
1179 # ensure that the label is in the same segment as the vtbl proper.
1180 # The native code generator has an analogous fix; see
1181 # ghc/compiler/nativeGen/AbsCStixGen.lhs line 107.
1182 print OUTASM "${T_create_word} 0\n";
1184 # direct return code will be put here!
1185 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1187 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1188 # Alphas: the commented nop is for the splitter, to ensure
1189 # that no module ends with a label as the very last
1190 # thing. (The linker will adjust the label to point
1191 # to the first code word of the next module linked in,
1192 # even if alignment constraints cause the label to move!)
1194 print OUTASM "\t# nop\n";
1197 } elsif ( $chkcat[$i] eq 'toc' ) {
1198 # silly optimisation to print tocs, since they come in groups...
1199 print OUTASM $T_HDR_toc;
1201 while ($chkcat[$j] eq 'toc')
1202 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1205 print OUTASM $chk[$j];
1207 $chkcat[$j] = 'DONE ALREADY';
1212 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1216 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1218 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1219 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1223 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1224 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1229 sub mash_hppa_prologue { # OK, epilogue, too
1232 # toss all prologue stuff
1233 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1235 # Lie about our .CALLINFO
1236 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1243 # toss all epilogue stuff
1244 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1246 # Sorry; we moved the _info stuff to the code segment.
1247 s/_info,DATA/_info,CODE/g;
1254 sub print_doctored {
1255 local($_, $need_fallthru_patch) = @_;
1257 if ( $TargetPlatform !~ /^i386-/
1258 || ! /^\t[a-z]/ # no instructions in here, apparently
1259 || /^${T_US}__stginit_[A-Za-z0-9_]+${T_POST_LBL}/) {
1263 # OK, must do some x86 **HACKING**
1265 local($entry_patch) = '';
1266 local($exit_patch) = '';
1268 # gotta watch out for weird instructions that
1269 # invisibly smash various regs:
1270 # rep* %ecx used for counting
1271 # scas* %edi used for destination index
1272 # cmps* %e[sd]i used for indices
1273 # loop* %ecx used for counting
1278 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1280 # * GCC used an "STG reg" for its own purposes
1282 # * some secret uses of machine reg, requiring STG reg
1283 # to be saved/restored
1285 # The most dangerous "GCC uses" of an "STG reg" are when
1286 # the reg holds the target of a jmp -- it's tricky to
1287 # insert the patch-up code before we get to the target!
1288 # So here we change the jmps:
1290 # --------------------------------------------------------
1291 # it can happen that we have jumps of the form...
1292 # jmp *<something involving %esp>
1294 # jmp <something involving another naughty register...>
1296 # a reasonably-common case is:
1298 # movl $_blah,<bad-reg>
1302 s/^\tmovl\s+\$${T_US}(.*),(\%e[abcd]x)\n\tjmp\s+\*\2/\tjmp $T_US$1/g;
1304 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1305 s/^\tmovl\s+(.*),\s*\%esi\n\tjmp\s+\*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1306 s/^\tjmp\s+\*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1307 s/^\tjmp\s+\*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1308 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1309 if /(jmp|call)\s+.*\%esi/;
1311 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1312 s/^\tmovl\s+(.*),\s*\%edi\n\tjmp\s+\*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1313 s/^\tjmp\s+\*(-?\d*\(.*\%edi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1314 s/^\tjmp\s+\*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1315 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1316 if /(jmp|call)\s+.*\%edi/;
1319 # OK, now we can decide what our patch-up code is going to
1322 # Offsets into register table - you'd better update these magic
1323 # numbers should you change its contents!
1324 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1325 local($OFFSET_Hp)=92;
1327 # Note funky ".=" stuff; we're *adding* to these _patch guys
1328 if ( $StolenX86Regs <= 2
1329 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1330 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1331 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1333 # nothing for call_{entry,exit} because %esi is callee-save
1335 if ( $StolenX86Regs <= 3
1336 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1337 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1338 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1340 # nothing for call_{entry,exit} because %edi is callee-save
1343 # --------------------------------------------------------
1344 # next, here we go with non-%esp patching!
1346 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1348 # Before calling GC we must set up the exit condition before the call
1349 # and entry condition when we come back
1351 # fix _all_ non-local jumps:
1353 s/^\tjmp\s+\*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1354 s/^\tjmp\s+${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1356 s/^(\tjmp\s+.*\n)/$exit_patch$1/g; # here's the fix...
1358 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1359 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1361 if ($StolenX86Regs == 2 ) {
1362 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1363 if /^\t(jmp|call)\s+.*\%e(si|di)/;
1364 } elsif ($StolenX86Regs == 3 ) {
1365 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1366 if /^\t(jmp|call)\s+.*\%edi/;
1369 # --------------------------------------------------------
1370 # that's it -- print it
1372 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1376 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1377 print OUTASM $exit_patch;
1378 # ToDo: make it not print if there is a "jmp" at the end
1384 sub init_FUNNY_THINGS {
1385 %KNOWN_FUNNY_THING = (
1387 # "${T_US}stg_.*{T_POST_LBL}", 1,
1392 The following table reversal is used for both info tables and return
1393 vectors. In both cases, we remove the first entry from the table,
1394 reverse the table, put the label at the end, and paste some code
1395 (that which is normally referred to by the first entry in the table)
1396 right after the table itself. (The code pasting is done elsewhere.)
1400 local($symb, $tbl, $discard1) = @_;
1402 local($before) = '';
1404 local(@imports) = (); # hppa only
1407 local(@lines) = split(/\n/, $tbl);
1410 # Deal with the header...
1411 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1412 $label .= $lines[$i] . "\n",
1413 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1414 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1415 || $lines[$i] =~ /^${T_US}\S+_vtbl${T_POST_LBL}$/o;
1417 $before .= $lines[$i] . "\n"; # otherwise...
1420 # Grab the table data...
1421 if ( $TargetPlatform !~ /^hppa/ ) {
1422 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1423 push(@words, $lines[$i]);
1425 } else { # hppa weirdness
1426 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+(${T_DOT_WORD}|\.IMPORT)/; $i++) {
1427 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1428 push(@imports, $lines[$i]);
1430 # We don't use HP's ``function pointers''
1431 # We just use labels in code space, like normal people
1432 $lines[$i] =~ s/P%//;
1433 push(@words, $lines[$i]);
1438 # now throw away the first word (SRT) iff it is empty.
1439 # The .zero business is for Linux/ELF.
1440 # The .skip business is for Sparc/Solaris/ELF.
1441 # The .blockz business is for HPPA.
1442 if ($discard1 && $words[0] =~ /^\t?(${T_DOT_WORD}\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) {
1446 for (; $i <= $#lines; $i++) {
1447 $after .= $lines[$i] . "\n";
1450 # Alphas: If we have anonymous text (not part of a procedure), the
1451 # linker may complain about missing exception information. Bleh.
1452 # To suppress this, we place a .ent/.end pair around the code.
1453 # At the same time, we have to be careful and not enclose any leading
1454 # .file/.loc directives.
1455 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1456 local ($ident) = $1;
1457 $before =~ s/^((\s*\.(file|loc)\s+[^\n]*\n)*)/$1\t.ent $ident\n/;
1458 $after .= "\t.end $ident\n";
1461 # Alphas: The heroic Simon Marlow found a bug in the Digital UNIX
1462 # assembler (!) wherein .quad constants inside .text sections are
1463 # first narrowed to 32 bits then sign-extended back to 64 bits.
1464 # This obviously screws up our 64-bit bitmaps, so we work around
1465 # the bug by replacing .quad with .align 3 + .long + .long [ccshan]
1466 if ( $TargetPlatform =~ /^alpha-/ ) {
1468 if (/^\s*\.quad\s+([-+0-9].*\S)\s*$/ && length $1 >= 10) {
1469 local ($number) = $1;
1470 if ($number =~ /^([-+])?(0x?)?([0-9]+)$/) {
1471 local ($sign, $base, $digits) = ($1, $2, $3);
1472 $base = (10, 8, 16)[length $base];
1473 local ($hi, $lo) = (0, 0);
1474 foreach $i (split(//, $digits)) {
1475 $j = $lo * $base + $i;
1476 $lo = $j % 4294967296;
1477 $hi = $hi * $base + ($j - $lo) / 4294967296;
1479 ($hi, $lo) = (4294967295 - $hi, 4294967296 - $lo)
1481 $_ = "\t.align 3\n\t.long $lo\n\t.long $hi\n";
1482 # printf STDERR "TURNING %s into 0x %08x %08x\n", $number, $hi, $lo;
1484 print STDERR "Cannot handle \".quad $number\" in info table\n";
1492 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1493 . join("\n", @words) . "\n"
1496 # print STDERR "before=$before\n";
1497 # print STDERR "label=$label\n";
1498 # print STDERR "words=",(reverse @words),"\n";
1499 # print STDERR "after=$after\n";
1505 The HP is a major nuisance. The threaded code mangler moved info
1506 tables from data space to code space, but unthreaded code in the RTS
1507 still has references to info tables in data space. Since the HP
1508 linker is very precise about where symbols live, we need to patch the
1509 references in the unthreaded RTS as well.
1512 sub mini_mangle_asm_hppa {
1513 local($in_asmf, $out_asmf) = @_;
1515 open(INASM, "< $in_asmf")
1516 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1517 open(OUTASM,"> $out_asmf")
1518 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1521 s/_info,DATA/_info,CODE/; # Move _info references to code space
1527 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1528 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1534 sub mini_mangle_asm_powerpc {
1535 local($in_asmf, $out_asmf) = @_;
1537 open(INASM, "< $in_asmf")
1538 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1539 open(OUTASM,"> $out_asmf")
1540 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1543 s/long _PRStart/long ._PRStart/;
1544 s/long _PRIn_/long ._PRIn_/;
1545 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1546 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1547 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1548 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1549 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1550 s/\.tc EnterNodeCode\[TC]\,EnterNodeCode\[DS\]/\.tc EnterNodeCode\[TC]\,.EnterNodeCode/; # CONC
1551 s/\.tc CheckHeapCode\[TC]\,CheckHeapCode\[DS\]/\.tc CheckHeapCode\[TC]\,.CheckHeapCode/; # CONC
1556 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1557 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1560 sub mangle_powerpc_tailjump {
1562 local($maybe_more) = 1;
1563 while (($c =~ /\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1566 $lcsymb =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1567 # the checks for r1 and r2 are mostly paranoia...
1569 $r1 =~ s/(.*\n)*\tlw?z? (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1571 $r2 =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1574 $c =~ s/((.*\n)*)\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1582 sub tidy_up_and_die {
1583 local($return_val, $msg) = @_;
1585 exit (($return_val == 0) ? 0 : 1);