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*(\$.*\.\.ng:|\.align\s+\d+|\.(globl|ent)\s+\S+|\#.*|\.(file|loc)\s+\S+\s+\S+|\.text|\.r?data)\n)';
100 $T_COPY_DIRVS = '^\s*(\$.*\.\.ng:|\#|\.(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_vector = "\.text\n\t\.align 3\n";
114 $T_HDR_direct = "\.text\n\t\.align 3\n";
115 $T_create_word = "\t.quad";
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_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
141 $T_HDR_direct = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
142 $T_create_word = "\t.word";
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_srt = "\.text\n\t\.align 2\n";
168 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
169 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
170 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
171 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
172 $T_create_word = "\t.word";
174 #--------------------------------------------------------#
175 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|freebsd|netbsd)$/ ) {
177 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
178 $T_US = ''; # _ if symbols have an underscore on the front
179 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
180 ($TargetPlatform =~ /-(linux|freebsd|netbsd)$/) ? '#' : '/' ;
181 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
183 $T_X86_PRE_LLBL_PAT = '\.L';
184 $T_X86_PRE_LLBL = '.L';
185 $T_X86_BADJMP = '^\tjmp\s+[^\.\*]';
187 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,\s*0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.size\s+\S+\s*,\s*\d+|\.ident.*|\.local.*)\n)';
188 $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)';
190 if ( $TargetPlatform =~ /freebsd|netbsd/ ) {
191 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
193 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
196 $T_DOT_WORD = '\.(long|value|word|byte|zero)';
197 $T_DOT_GLOBAL = '\.globl';
198 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
199 $T_HDR_misc = "\.text\n\t\.align 4\n";
200 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
201 $T_HDR_consist = "\.text\n";
202 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
203 $T_HDR_srt = "\.text\n\t\.align 4\n"; # ToDo: change align?
204 $T_HDR_info = "\.text\n\t\.align 4\n"; # NB: requires padding
205 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
206 $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding
207 $T_HDR_direct = "\.text\n\t\.align 4\n";
208 $T_create_word = "\t.word";
210 #--------------------------------------------------------#
211 } elsif ( $TargetPlatform =~ /^ia64-.*-linux$/ ) {
213 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
214 $T_US = ''; # _ if symbols have an underscore on the front
216 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
219 $T_MOVE_DIRVS = '^(\s*\.(global|proc|pred\.safe_across_calls|text|data|section|subsection|align|size|type|ident)\s+.*\n)';
220 $T_COPY_DIRVS = '\.(global|proc)';
222 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
223 $T_DOT_WORD = '\.(long|value|byte|zero)';
224 $T_DOT_GLOBAL = '\.global';
225 $T_HDR_literal = "\.section\t\.rodata\n";
226 $T_HDR_misc = "\.text\n\t\.align 8\n";
227 $T_HDR_data = "\.data\n\t\.align 8\n";
228 $T_HDR_consist = "\.text\n";
229 $T_HDR_closure = "\.data\n\t\.align 8\n";
230 $T_HDR_srt = "\.text\n\t\.align 8\n";
231 $T_HDR_info = "\.text\n\t\.align 8\n";
232 $T_HDR_entry = "\.text\n\t\.align 16\n";
233 $T_HDR_vector = "\.text\n\t\.align 8\n";
234 $T_HDR_direct = "\.text\n\t\.align 8\n";
235 $T_create_word = "\t.word";
237 #--------------------------------------------------------#
238 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
240 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
241 $T_US = '_'; # _ if symbols have an underscore on the front
242 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
243 $T_CONST_LBL = '^LC(\d+):$';
246 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
247 $T_COPY_DIRVS = '\.(globl|proc|stab)';
248 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
250 $T_DOT_WORD = '\.long';
251 $T_DOT_GLOBAL = '\.globl';
252 $T_HDR_literal = "\.text\n\t\.even\n";
253 $T_HDR_misc = "\.text\n\t\.even\n";
254 $T_HDR_data = "\.data\n\t\.even\n";
255 $T_HDR_consist = "\.text\n";
256 $T_HDR_closure = "\.data\n\t\.even\n";
257 $T_HDR_srt = "\.text\n\t\.even\n";
258 $T_HDR_info = "\.text\n\t\.even\n";
259 $T_HDR_entry = "\.text\n\t\.even\n";
260 $T_HDR_vector = "\.text\n\t\.even\n";
261 $T_HDR_direct = "\.text\n\t\.even\n";
262 $T_create_word = "\t.long";
264 #--------------------------------------------------------#
265 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
267 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
268 $T_US = ''; # _ if symbols have an underscore on the front
269 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
270 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
273 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
274 $T_COPY_DIRVS = '\.(globl|ent)';
276 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
277 $T_DOT_WORD = '\.word';
278 $T_DOT_GLOBAL = '^\t\.globl';
279 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
280 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
281 $T_HDR_data = "\t\.data\n\t\.align 2\n";
282 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
283 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
284 $T_HDR_srt = "\t\.text\n\t\.align 2\n";
285 $T_HDR_info = "\t\.text\n\t\.align 2\n";
286 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
287 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
288 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
289 $T_create_word = "\t.word";
291 #--------------------------------------------------------#
292 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ ) {
293 # Apple PowerPC Darwin/MacOS X.
294 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
295 $T_US = '_'; # _ if symbols have an underscore on the front
296 $T_PRE_APP = 'WHAT IS THIS'; # regexp that says what comes before APP/NO_APP
297 $T_CONST_LBL = '^\LC\d+:'; # regexp for what such a lbl looks like
300 $T_MOVE_DIRVS = '^(\s*(\.align \d+|\.text|\.data|\.const_data|\.cstring|\.non_lazy_symbol_pointer|\.const|\.static_const|\.literal4|\.literal8|\.static_data|\.globl \S+)\n)';
301 $T_COPY_DIRVS = '\.(globl)';
303 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
304 $T_DOT_WORD = '\.(long|short|byte|fill|space)';
305 $T_DOT_GLOBAL = '\.globl';
306 $T_HDR_toc = "\.toc\n";
307 $T_HDR_literal = "\t\.const_data\n\t\.align 2\n";
308 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
309 $T_HDR_data = "\t\.data\n\t\.align 2\n";
310 $T_HDR_consist = "\t\.text\n\t\.align 2\n";
311 $T_HDR_closure = "\t\.const_data\n\t\.align 2\n";
312 $T_HDR_srt = "\t\.text\n\t\.align 2\n";
313 $T_HDR_info = "\t\.text\n\t\.align 2\n";
314 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
315 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
316 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
317 $T_create_word = "\t.long";
319 #--------------------------------------------------------#
320 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
322 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
323 $T_US = ''; # _ if symbols have an underscore on the front
324 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
325 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
328 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
329 $T_COPY_DIRVS = '\.(global|proc|stab)';
331 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
332 $T_DOT_WORD = '\.(long|word|byte|half|skip|uahalf|uaword)';
333 $T_DOT_GLOBAL = '^\t\.global';
334 $T_HDR_literal = "\.text\n\t\.align 8\n";
335 $T_HDR_misc = "\.text\n\t\.align 4\n";
336 $T_HDR_data = "\.data\n\t\.align 8\n";
337 $T_HDR_consist = "\.text\n";
338 $T_HDR_closure = "\.data\n\t\.align 4\n";
339 $T_HDR_srt = "\.data\n\t\.align 4\n";
340 $T_HDR_info = "\.text\n\t\.align 4\n";
341 $T_HDR_entry = "\.text\n\t\.align 4\n";
342 $T_HDR_vector = "\.text\n\t\.align 4\n";
343 $T_HDR_direct = "\.text\n\t\.align 4\n";
344 $T_create_word = "\t.word";
346 #--------------------------------------------------------#
347 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
349 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
350 $T_US = '_'; # _ if symbols have an underscore on the front
351 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
352 $T_CONST_LBL = '^LC(\d+):$';
355 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
356 $T_COPY_DIRVS = '\.(global|proc|stab)';
357 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
359 $T_DOT_WORD = '\.word';
360 $T_DOT_GLOBAL = '^\t\.global';
361 $T_HDR_literal = "\.text\n\t\.align 8\n";
362 $T_HDR_misc = "\.text\n\t\.align 4\n";
363 $T_HDR_data = "\.data\n\t\.align 8\n";
364 $T_HDR_consist = "\.text\n";
365 $T_HDR_closure = "\.data\n\t\.align 4\n";
366 $T_HDR_srt = "\.data\n\t\.align 4\n";
367 $T_HDR_info = "\.text\n\t\.align 4\n";
368 $T_HDR_entry = "\.text\n\t\.align 4\n";
369 $T_HDR_vector = "\.text\n\t\.align 4\n";
370 $T_HDR_direct = "\.text\n\t\.align 4\n";
371 $T_create_word = "\t.word";
373 #--------------------------------------------------------#
375 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
380 print STDERR "T_STABBY: $T_STABBY\n";
381 print STDERR "T_US: $T_US\n";
382 print STDERR "T_PRE_APP: $T_PRE_APP\n";
383 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
384 print STDERR "T_POST_LBL: $T_POST_LBL\n";
385 if ( $TargetPlatform =~ /^i386-/ ) {
386 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
387 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
388 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
390 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
391 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
392 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
393 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
394 print STDERR "T_HDR_literal: $T_HDR_literal\n";
395 print STDERR "T_HDR_misc: $T_HDR_misc\n";
396 print STDERR "T_HDR_data: $T_HDR_data\n";
397 print STDERR "T_HDR_consist: $T_HDR_consist\n";
398 print STDERR "T_HDR_closure: $T_HDR_closure\n";
399 print STDERR "T_HDR_info: $T_HDR_info\n";
400 print STDERR "T_HDR_entry: $T_HDR_entry\n";
401 print STDERR "T_HDR_vector: $T_HDR_vector\n";
402 print STDERR "T_HDR_direct: $T_HDR_direct\n";
408 %************************************************************************
410 \subsection{Mangle away}
412 %************************************************************************
416 local($in_asmf, $out_asmf) = @_;
418 # multi-line regexp matching:
423 &init_TARGET_STUFF();
424 &init_FUNNY_THINGS();
426 open(INASM, "< $in_asmf")
427 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
428 open(OUTASM,"> $out_asmf")
429 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
431 # read whole file, divide into "chunks":
432 # record some info about what we've found...
434 @chk = (); # contents of the chunk
435 $numchks = 0; # number of them
436 @chkcat = (); # what category of thing in each chunk
437 @chksymb = (); # what symbol(base) is defined in this chunk
438 %entrychk = (); # ditto, its entry code
439 %closurechk = (); # ditto, the (static) closure
440 %srtchk = (); # ditto, its SRT (for top-level things)
441 %infochk = (); # given a symbol base, say what chunk its info tbl is in
442 %vectorchk = (); # ditto, return vector table
443 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
445 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
448 tr/\r//d if $TargetPlatform =~ /-mingw32$/; # In case Perl doesn't convert line endings
449 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
450 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
451 next if /^\t\.def.*endef$/;
452 next if /${T_PRE_APP}(NO_)?APP/o;
453 next if /^;/ && $TargetPlatform =~ /^hppa/;
455 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|ia64)-/;
457 if ( $TargetPlatform =~ /^mips-/
458 && /^\t\.(globl\S+\.text|comm\t)/ ) {
459 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
460 # Treat .comm variables as data. These show up in two (known) places:
462 # - the module_registered variable used in the __stginit fragment.
463 # even though these are declared static and initialised, gcc 3.3
464 # likes to make them .comm, presumably to save space in the
467 # - global variables used to pass arguments from C to STG in
468 # a foreign export. (is this still true? --SDM)
470 } elsif ( /^\t\.comm.*$/ ) {
472 $chkcat[$i] = 'data';
475 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
476 # duplicated from the bottom
480 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
481 # Alphas: Local labels not to be confused with new chunks
484 # NB: all the rest start with a non-space
486 } elsif ( $TargetPlatform =~ /^mips-/
487 && /^\d+:/ ) { # a funny-looking very-local label
490 } elsif ( /$T_CONST_LBL/o ) {
492 $chkcat[$i] = 'literal';
495 } elsif ( /^${T_US}__stg_split_marker(\d*)${T_POST_LBL}$/o ) {
497 $chkcat[$i] = 'splitmarker';
500 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
503 $chkcat[$i] = 'infotbl';
504 $chksymb[$i] = $symb;
506 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
508 $infochk{$symb} = $i;
510 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(entry|ret)${T_POST_LBL}$/o ) {
512 $chkcat[$i] = 'entry';
517 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
519 $chkcat[$i] = 'closure';
522 $closurechk{$1} = $i;
524 } elsif ( /^${T_US}([A-Za-z0-9_]+)_srt${T_POST_LBL}$/o ) {
531 } elsif ( /^${T_US}([A-Za-z0-9_]+)_ct${T_POST_LBL}$/o ) {
533 $chkcat[$i] = 'data';
536 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
539 } elsif ( /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
540 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
541 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
542 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
545 $chkcat[$i] = 'data';
548 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
553 } elsif ( /^${T_US}([A-Za-z0-9_]+)_cc(s)?${T_POST_LBL}$/o ) {
554 # all CC_ symbols go in the data section...
556 $chkcat[$i] = 'data';
559 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(alt|dflt)${T_POST_LBL}$/o ) {
561 $chkcat[$i] = 'misc';
563 } elsif ( /^${T_US}([A-Za-z0-9_]+)_vtbl${T_POST_LBL}$/o ) {
565 $chkcat[$i] = 'vector';
570 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
571 && /^[A-Za-z0-9][A-Za-z0-9_]*:/ ) {
572 # Some Solaris system headers contain function definitions (as
573 # opposed to mere prototypes), which end up in the .hc file when
574 # a Haskell module foreign imports the corresponding system
575 # functions (most notably stat()). We put them into the text
576 # segment. Note that this currently does not extend to function
577 # names starting with an underscore.
580 $chkcat[$i] = 'misc';
583 } elsif ( /^${T_US}[A-Za-z0-9_]/o
584 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
585 || ! /^L\$\d+$/ ) ) {
589 print STDERR "Warning: retaining unknown function \`$thing' in output from C compiler\n"
590 unless # $KNOWN_FUNNY_THING{$thing}
591 /^${T_US}stg_.*${T_POST_LBL}$/o # RTS internals
592 || /^${T_US}__stg_.*${T_POST_LBL}$/o # more RTS internals
593 || /^${T_US}__fexp_.*${T_POST_LBL}$/o # foreign export
594 || /^${T_US}.*_slow${T_POST_LBL}$/o # slow entry
595 || /^${T_US}__stginit.*${T_POST_LBL}$/o # __stginit<module>
596 || /^${T_US}.*_btm${T_POST_LBL}$/o # large bitmaps
597 || /^${T_US}.*_srtd${T_POST_LBL}$/o # large bitmaps
598 || /^${T_US}.*_fast${T_POST_LBL}$/o # primops
599 || /^${T_US}.*_closure_tbl${T_POST_LBL}$/o # closure tables
600 || /^_uname:/o; # x86/Solaris2
602 $chkcat[$i] = 'misc';
605 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && /^\.picsymbol_stub/ )
608 $chkcat[$i] = 'dyld';
610 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && /^\.symbol_stub/ )
613 $chkcat[$i] = 'dyld';
615 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && /^\.lazy_symbol_pointer/ )
618 $chkcat[$i] = 'dyld';
620 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && /^\.non_lazy_symbol_pointer/ )
623 $chkcat[$i] = 'dyld';
625 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && /^\.data/ && $chkcat[$i] eq 'dyld')
626 { # non_lazy_symbol_ptrs that point to local symbols
628 $chkcat[$i] = 'dyld';
630 } else { # simple line (duplicated at the top)
635 $numchks = $#chk + 1;
637 # open CHUNKS, ">/tmp/chunks1" or die "Cannot open /tmp/chunks1: $!\n";
638 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
641 # the division into chunks is imperfect;
642 # we throw some things over the fence into the next
645 # also, there are things we would like to know
646 # about the whole module before we start spitting
649 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
650 local($FIRST_TOSSABLE ) = ($TargetPlatform =~ /^(hppa|mips-)/) ? 1 : 0;
652 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
654 # Alphas: NB: we start meddling at chunk 1, not chunk 0
655 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
656 # spits a ".quad 0" in after the very first ".rdata"; we
657 # detect this special case (tossing the ".quad 0")!
658 local($magic_rdata_seen) = 0;
660 # HPPAs, MIPSen: also start medding at chunk 1
662 for ($i = $FIRST_TOSSABLE; $i < $numchks; $i++) {
663 $c = $chk[$i]; # convenience copy
665 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
667 # toss all prologue stuff; HPPA is pretty weird
669 $c = &hppa_mash_prologue($c) if $TargetPlatform =~ /^hppa-/;
671 # be slightly paranoid to make sure there's
672 # nothing surprising in there
673 if ( $c =~ /--- BEGIN ---/ ) {
674 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
676 # remove junk whitespace around the split point
680 if ($TargetPlatform =~ /^i386-/) {
681 $p =~ s/^\tpushl\s+\%edi\n//;
682 $p =~ s/^\tpushl\s+\%esi\n//;
683 $p =~ s/^\tpushl\s+\%ebx\n//;
684 $p =~ s/^\tmovl\s+\%esi,\s*\d*\(\%esp\)\n//;
685 $p =~ s/^\tmovl\s+\%edi,\s*\d*\(\%esp\)\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/);
689 # GCC 3.1 is in the habit of adding spurious writes to the
690 # stack in the prologue. Just to be on the safe side,
691 # chuck these over the fence into the main code.
692 while ($p =~ /^\tmovl\s+\$\d+,\s*\d*\(\%esp\)\n/) {
693 # print "Spurious instruction: $&";
698 } elsif ($TargetPlatform =~ /^ia64-/) {
699 $p =~ s/^\t\.prologue .*\n//;
700 $p =~ s/^\t\.save ar\.pfs, r\d+\n\talloc r\d+ = ar\.pfs, 0, 3[12], \d+, 0\n//;
701 $p =~ s/^\t\.fframe \d+\n\tadds r12 = -\d+, r12\n//;
702 $p =~ s/^\t\.save rp, r\d+\n\tmov r\d+ = b0\n//;
703 $p =~ s/^\t\.(mii|mmi)\n//g; # bundling is no longer sensible
704 $p =~ s/^\t;;\n//g; # discard stops
705 $p =~ s/^\t\/\/.*\n//g; # gcc inserts timings in // comments
707 # GCC 3.3 saves r1 in the prologue, move this to the body
708 if ($p =~ /^\tmov r\d+ = r1\n/) {
712 } elsif ($TargetPlatform =~ /^m68k-/) {
713 $p =~ s/^\tlink a6,#-?\d.*\n//;
714 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
715 # The above showed up in the asm code,
716 # so I added it here.
717 # I hope it's correct.
719 $p =~ s/^\tmovel d2,sp\@-\n//;
720 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
721 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
722 } elsif ($TargetPlatform =~ /^mips-/) {
723 # the .frame/.mask/.fmask that we use is the same
724 # as that produced by GCC for miniInterpret; this
725 # gives GDB some chance of figuring out what happened
726 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
727 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
728 $p =~ s/^\t\.(mask|fmask).*\n//g;
729 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
730 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
731 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
732 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
733 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
734 $p =~ s/__FRAME__/$FRAME/;
735 } elsif ($TargetPlatform =~ /^powerpc-apple-.*/) {
737 $pcrel_label =~ s/(.|\n)*^(L\d+\$pb):\n(.|\n)*/$2/ or $pcrel_label = "";
739 $p =~ s/^\tmflr r0\n//;
740 $p =~ s/^\tbl saveFP # f\d+\n//;
741 $p =~ s/^\tbl saveFP ; save f\d+-f\d+\n//;
742 $p =~ s/^L\d+\$pb:\n//;
743 $p =~ s/^\tstmw r\d+,-\d+\(r1\)\n//;
744 $p =~ s/^\tstfd f\d+,-\d+\(r1\)\n//g;
745 $p =~ s/^\tstw r0,\d+\(r1\)\n//g;
746 $p =~ s/^\tstwu r1,-\d+\(r1\)\n//;
747 $p =~ s/^\tstw r\d+,-\d+\(r1\)\n//g;
748 $p =~ s/^\tbcl 20,31,L\d+\$pb\n//;
749 $p =~ s/^L\d+\$pb:\n//;
750 $p =~ s/^\tmflr r31\n//;
752 # This is bad: GCC 3 seems to zero-fill some local variables in the prologue
753 # under some circumstances, only when generating position dependent code.
754 # I have no idea why, and I don't think it is necessary, so let's toss it.
755 $p =~ s/^\tli r\d+,0\n//g;
756 $p =~ s/^\tstw r\d+,\d+\(r1\)\n//g;
758 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
761 # HWL HACK: dont die, just print a warning
762 #print stderr "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
763 die "Prologue junk?: $p\n" if $p =~ /^\s+[^\s\.]/;
765 if ($TargetPlatform =~ /^powerpc-apple-.*/ && $pcrel_label ne "") {
766 # on PowerPC, we have to keep a part of the prologue
767 # (which loads the current instruction pointer into register r31)
768 $p .= "bcl 20,31,$pcrel_label\n";
769 $p .= "$pcrel_label:\n";
770 $p .= "\tmflr r31\n";
773 # glue together what's left
778 if ( $TargetPlatform =~ /^mips-/ ) {
779 # MIPS: first, this basic sequence may occur "--- END ---" or not
780 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
783 # toss all epilogue stuff; again, paranoidly
784 if ( $c =~ /--- END ---/ ) {
785 if (($r, $e) = split(/--- END ---/, $c)) {
786 if ($TargetPlatform =~ /^i386-/) {
788 $e =~ s/^\tpopl\s+\%edi\n//;
789 $e =~ s/^\tpopl\s+\%esi\n//;
790 $e =~ s/^\tpopl\s+\%edx\n//;
791 $e =~ s/^\tpopl\s+\%ecx\n//;
792 $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//;
793 $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//;
794 } elsif ($TargetPlatform =~ /^ia64-/) {
795 $e =~ s/^\tmov ar\.pfs = r\d+\n//;
796 $e =~ s/^\tmov b0 = r\d+\n//;
797 $e =~ s/^\t\.restore sp\n\tadds r12 = \d+, r12\n//;
798 $e =~ s/^\tbr\.ret\.sptk\.many b0\n//;
799 $e =~ s/^\t\.(mii|mmi|mib)\n//g; # bundling is no longer sensible
800 $e =~ s/^\t;;\n//g; # discard stops - stop at end of body is sufficient
801 $e =~ s/^\t\/\/.*\n//g; # gcc inserts timings in // comments
802 } elsif ($TargetPlatform =~ /^m68k-/) {
803 $e =~ s/^\tunlk a6\n//;
805 } elsif ($TargetPlatform =~ /^mips-/) {
806 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
807 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
808 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
809 $e =~ s/^\tj\t\$31\n//;
810 } elsif ($TargetPlatform =~ /^powerpc-apple-.*/) {
811 $e =~ s/^\taddi r1,r1,\d+\n//;
812 $e =~ s/^\tcal r1,\d+\(r1\)\n//;
813 $e =~ s/^\tlw?z? r\d+,\d+\(r1\)\n//;
814 $e =~ s/^\tmtlr r0\n//;
817 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
820 print STDERR "WARNING: Epilogue junk?: $e\n" if $e =~ /^\t\s*[^\.\s\n]/;
822 # glue together what's left
824 $c =~ s/\n\t\n/\n/; # junk blank line
828 # On SPARCs, we don't do --- BEGIN/END ---, we just
829 # toss the register-windowing save/restore/ret* instructions
831 if ( $TargetPlatform =~ /^sparc-/ ) {
832 $c =~ s/^\t(save.*|restore.*|ret|retl)\n//g;
833 # throw away PROLOGUE comments
834 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
837 # On Alphas, the prologue mangling is done a little later (below)
839 # toss all calls to __DISCARD__
840 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
841 $c =~ s/^\tjsr\s+\$26\s*,\s*${T_US}__DISCARD__\n//go if $TargetPlatform =~ /^alpha-/;
842 $c =~ s/^\tbl\s+L___DISCARD__\$stub\n//go if $TargetPlatform =~ /^powerpc-apple-.*/;
844 # IA64: mangle tailcalls into jumps here
845 if ($TargetPlatform =~ /^ia64-/) {
846 while ($c =~ s/^\tbr\.call\.sptk\.many b0 = (.*)\n(?:^\.L([0-9]*):\n)?(?:\t;;\n)?(?:\tmov r1 = r\d+\n)?(?:\t;;\n)?\t--- TAILCALL ---\n(?:\t;;\n\tbr \.L\d+\n)?/\tbr\.few $1\n/) {
847 # Eek, the gcc optimiser is getting smarter... if we see a jump to the --- TAILCALL ---
848 # marker then we reapply the substitution at the source sites
849 $c =~ s/^\tbr \.L$2\n/\t--- TAILCALL ---\n/g if ($2);
853 # MIPS: that may leave some gratuitous asm macros around
854 # (no harm done; but we get rid of them to be tidier)
855 $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/
856 if $TargetPlatform =~ /^mips-/;
858 # toss stack adjustment after DoSparks
859 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
860 if $TargetPlatform =~ /^m68k-/; # this looks old...
862 if ( $TargetPlatform =~ /^alpha-/ &&
863 ! $magic_rdata_seen &&
864 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
865 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
866 $magic_rdata_seen = 1;
869 # pick some end-things and move them to the next chunk
871 # pin a funny end-thing on (for easier matching):
872 $c .= 'FUNNY#END#THING';
874 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
878 # on x86 we try not to copy any directives into a literal
879 # chunk, rather we keep looking for the next real chunk. This
880 # is because we get things like
882 # .globl blah_closure
888 if ( $TargetPlatform =~ /^(i386|sparc|powerpc)/ && $to_move =~ /${T_COPY_DIRVS}/ ) {
890 while ( $j < $numchks && $chk[$j] =~ /$T_CONST_LBL/) {
893 if ( $j < $numchks ) {
894 $chk[$j] = $to_move . $chk[$j];
898 elsif ( $i < ($numchks - 1)
899 && ( $to_move =~ /${T_COPY_DIRVS}/
900 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
901 $chk[$i + 1] = $to_move . $chk[$i + 1];
902 # otherwise they're tossed
905 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
908 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
910 # toss all prologue stuff, except for loading gp, and the ..ng address
911 unless ($c =~ /\.ent.*\n\$.*\.\.ng:/) {
912 if (($p, $r) = split(/^\t\.prologue/, $c)) {
913 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
914 $keep =~ s/^\t\.frame.*\n/\t.frame \$30,0,\$26,0\n/;
915 $keep =~ s/^\t\.(mask|fmask).*\n//g;
916 $c = $keep . "..ng:\n";
918 print STDERR "malformed code block ($ent)?\n"
921 $c .= "\t.prologue" . $r;
925 $c =~ s/FUNNY#END#THING//;
927 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
929 $chk[$i] = $c; # update w/ convenience copy
932 # open CHUNKS, ">/tmp/chunks2" or die "Cannot open /tmp/chunks2: $!\n";
933 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
936 if ( $TargetPlatform =~ /^alpha-/ ) {
937 # print out the header stuff first
938 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
939 print OUTASM $chk[0];
941 } elsif ( $TargetPlatform =~ /^hppa/ ) {
942 print OUTASM $chk[0];
944 } elsif ( $TargetPlatform =~ /^mips-/ ) {
945 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
947 # get rid of horrible "<dollar>Revision: .*$" strings
948 local(@lines0) = split(/\n/, $chk[0]);
950 while ( $z <= $#lines0 ) {
951 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
954 while ( $z <= $#lines0 ) {
956 last if $lines0[$z] =~ /[,\t]0x0$/;
962 $chk[0] = join("\n", @lines0);
963 $chk[0] =~ s/\n\n+/\n/;
964 print OUTASM $chk[0];
967 # print out all the literal strings next
968 for ($i = 0; $i < $numchks; $i++) {
969 if ( $chkcat[$i] eq 'literal' ) {
970 print OUTASM $T_HDR_literal, $chk[$i];
971 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
973 $chkcat[$i] = 'DONE ALREADY';
977 # on the HPPA, print out all the bss next
978 if ( $TargetPlatform =~ /^hppa/ ) {
979 for ($i = 1; $i < $numchks; $i++) {
980 if ( $chkcat[$i] eq 'bss' ) {
981 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
982 print OUTASM $chk[$i];
984 $chkcat[$i] = 'DONE ALREADY';
989 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
990 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
992 next if $chkcat[$i] eq 'DONE ALREADY';
994 if ( $chkcat[$i] eq 'misc' ) {
995 if ($chk[$i] ne '') {
996 print OUTASM $T_HDR_misc;
997 &print_doctored($chk[$i], 0);
1000 } elsif ( $chkcat[$i] eq 'toss' ) {
1001 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
1003 } elsif ( $chkcat[$i] eq 'data' ) {
1004 if ($chk[$i] ne '') {
1005 print OUTASM $T_HDR_data;
1006 print OUTASM $chk[$i];
1009 } elsif ( $chkcat[$i] eq 'consist' ) {
1010 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
1011 local($consist) = "$1.$2.$3";
1012 $consist =~ s/,/./g;
1013 $consist =~ s/\//./g;
1014 $consist =~ s/-/_/g;
1015 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
1017 # Using a cygnus-2.7-96q4 gcc build on hppas, the
1018 # consistency chunk for ghc_cc_ID often (but not always!)
1019 # gets lumped with a bunch of .IMPORT directives containing info on
1020 # the code or data space nature of external symbols. We can't
1021 # toss these, so once the consistency ID has been turned into
1022 # a representable symbol, we substitute it for the symbol
1023 # that the string was attached to in the first place (ghc_cc_ID.)
1024 # (The original string is also substituted away.)
1026 # This change may affect the code output on other platforms in
1027 # adverse ways, hence we restrict this hack hppa targets only.
1030 if ( $TargetPlatform =~ /^hppa/ ) {
1031 $chk[$i] =~ s/^${T_US}ghc.*c_ID$TPOSTLBL/$consist/o;
1032 $chk[$i] =~ s/\t$T_hsc_cc_PAT/$T_HDR_misc/o;
1033 $consist = $chk[$i]; #clumsily
1035 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
1037 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
1038 # on mips: consistency string is just a v
1039 # horrible bunch of .bytes,
1040 # which I am too lazy to sort out (WDP 95/05)
1042 print STDERR "Couldn't grok consistency: ", $chk[$i];
1045 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
1046 # we can just re-constitute this one...
1047 # NB: we emit _three_ underscores no matter what,
1048 # so ghc-split doesn't have to care.
1049 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
1051 } elsif ( $chkcat[$i] eq 'closure'
1052 || $chkcat[$i] eq 'srt'
1053 || $chkcat[$i] eq 'infotbl'
1054 || $chkcat[$i] eq 'entry') { # do them in that order
1055 $symb = $chksymb[$i];
1058 if ( defined($closurechk{$symb}) ) {
1059 print OUTASM $T_HDR_closure;
1060 print OUTASM $chk[$closurechk{$symb}];
1061 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
1065 if ( defined($srtchk{$symb}) ) {
1066 print OUTASM $T_HDR_srt;
1067 print OUTASM $chk[$srtchk{$symb}];
1068 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
1072 if ( defined($infochk{$symb}) ) {
1074 print OUTASM $T_HDR_info;
1075 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
1077 # entry code will be put here!
1079 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
1083 if ( defined($entrychk{$symb}) ) {
1085 $c = $chk[$entrychk{$symb}];
1087 print OUTASM $T_HDR_entry;
1089 &print_doctored($c, 1); # NB: the 1!!!
1091 $chkcat[$entrychk{$symb}] = 'DONE ALREADY';
1094 } elsif ( $chkcat[$i] eq 'vector'
1095 || $chkcat[$i] eq 'direct' ) { # do them in that order
1096 $symb = $chksymb[$i];
1099 if ( defined($vectorchk{$symb}) ) {
1100 print OUTASM $T_HDR_vector;
1101 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1103 # direct return code will be put here!
1104 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1106 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1107 # Alphas: the commented nop is for the splitter, to ensure
1108 # that no module ends with a label as the very last
1109 # thing. (The linker will adjust the label to point
1110 # to the first code word of the next module linked in,
1111 # even if alignment constraints cause the label to move!)
1113 print OUTASM "\t# nop\n";
1116 } elsif ( $chkcat[$i] eq 'toc' ) {
1117 # silly optimisation to print tocs, since they come in groups...
1118 print OUTASM $T_HDR_toc;
1120 while ($chkcat[$j] eq 'toc')
1121 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1124 print OUTASM $chk[$j];
1126 $chkcat[$j] = 'DONE ALREADY';
1130 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && $chkcat[$i] eq 'dyld' ) {
1131 # powerpc-apple: dynamic linker stubs
1132 if($chk[$i] !~ /\.indirect_symbol ___DISCARD__/)
1133 { # print them out unchanged, but remove the stubs for __DISCARD__
1134 print OUTASM $chk[$i];
1137 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1141 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1144 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1145 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1150 sub hppa_mash_prologue { # OK, epilogue, too
1153 # toss all prologue stuff
1154 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1156 # Lie about our .CALLINFO
1157 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1164 # toss all epilogue stuff
1165 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1167 # Sorry; we moved the _info stuff to the code segment.
1168 s/_info,DATA/_info,CODE/g;
1175 sub print_doctored {
1176 local($_, $need_fallthru_patch) = @_;
1178 if ( $TargetPlatform !~ /^i386-/
1179 || ! /^\t[a-z]/ # no instructions in here, apparently
1180 || /^${T_US}__stginit_[A-Za-z0-9_]+${T_POST_LBL}/) {
1184 # OK, must do some x86 **HACKING**
1186 local($entry_patch) = '';
1187 local($exit_patch) = '';
1189 # gotta watch out for weird instructions that
1190 # invisibly smash various regs:
1191 # rep* %ecx used for counting
1192 # scas* %edi used for destination index
1193 # cmps* %e[sd]i used for indices
1194 # loop* %ecx used for counting
1199 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1201 # * GCC used an "STG reg" for its own purposes
1203 # * some secret uses of machine reg, requiring STG reg
1204 # to be saved/restored
1206 # The most dangerous "GCC uses" of an "STG reg" are when
1207 # the reg holds the target of a jmp -- it's tricky to
1208 # insert the patch-up code before we get to the target!
1209 # So here we change the jmps:
1211 # --------------------------------------------------------
1212 # it can happen that we have jumps of the form...
1213 # jmp *<something involving %esp>
1215 # jmp <something involving another naughty register...>
1217 # a reasonably-common case is:
1219 # movl $_blah,<bad-reg>
1223 s/^\tmovl\s+\$${T_US}(.*),\s*(\%e[abcd]x)\n\tjmp\s+\*\2/\tjmp $T_US$1/g;
1225 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1226 s/^\tmovl\s+(.*),\s*\%esi\n\tjmp\s+\*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1227 s/^\tjmp\s+\*(.*\(.*\%esi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1228 s/^\tjmp\s+\*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1229 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1230 if /(jmp|call)\s+.*\%esi/;
1232 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1233 s/^\tmovl\s+(.*),\s*\%edi\n\tjmp\s+\*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1234 s/^\tjmp\s+\*(.*\(.*\%edi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1235 s/^\tjmp\s+\*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1236 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1237 if /(jmp|call)\s+.*\%edi/;
1240 # OK, now we can decide what our patch-up code is going to
1243 # Offsets into register table - you'd better update these magic
1244 # numbers should you change its contents!
1245 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1246 local($OFFSET_Hp)=88;
1248 # Note funky ".=" stuff; we're *adding* to these _patch guys
1249 if ( $StolenX86Regs <= 2
1250 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1251 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1252 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1254 # nothing for call_{entry,exit} because %esi is callee-save
1256 if ( $StolenX86Regs <= 3
1257 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1258 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1259 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1261 # nothing for call_{entry,exit} because %edi is callee-save
1264 # --------------------------------------------------------
1265 # next, here we go with non-%esp patching!
1267 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1269 # Before calling GC we must set up the exit condition before the call
1270 # and entry condition when we come back
1272 # fix _all_ non-local jumps:
1274 s/^\tjmp\s+\*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1275 s/^\tjmp\s+${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1277 s/^(\tjmp\s+.*\n)/$exit_patch$1/g; # here's the fix...
1279 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1280 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1282 if ($StolenX86Regs == 2 ) {
1283 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1284 if /^\t(jmp|call)\s+.*\%e(si|di)/;
1285 } elsif ($StolenX86Regs == 3 ) {
1286 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1287 if /^\t(jmp|call)\s+.*\%edi/;
1290 # --------------------------------------------------------
1291 # that's it -- print it
1293 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1297 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1298 print OUTASM $exit_patch;
1299 # ToDo: make it not print if there is a "jmp" at the end
1305 sub init_FUNNY_THINGS {
1306 %KNOWN_FUNNY_THING = (
1308 # "${T_US}stg_.*{T_POST_LBL}", 1,
1313 The following table reversal is used for both info tables and return
1314 vectors. In both cases, we remove the first entry from the table,
1315 reverse the table, put the label at the end, and paste some code
1316 (that which is normally referred to by the first entry in the table)
1317 right after the table itself. (The code pasting is done elsewhere.)
1321 local($symb, $tbl, $discard1) = @_;
1323 return ($tbl) if ($TargetPlatform =~ /^ia64-/);
1325 local($before) = '';
1327 local(@imports) = (); # hppa only
1330 local(@lines) = split(/\n/, $tbl);
1333 # Deal with the header...
1334 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1335 $label .= $lines[$i] . "\n",
1336 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1337 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1338 || $lines[$i] =~ /^${T_US}\S+_vtbl${T_POST_LBL}$/o;
1340 $before .= $lines[$i] . "\n"; # otherwise...
1343 # Grab the table data...
1344 if ( $TargetPlatform !~ /^hppa/ ) {
1345 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1346 push(@words, $lines[$i]);
1348 } else { # hppa weirdness
1349 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+(${T_DOT_WORD}|\.IMPORT)/; $i++) {
1350 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1351 push(@imports, $lines[$i]);
1353 # We don't use HP's ``function pointers''
1354 # We just use labels in code space, like normal people
1355 $lines[$i] =~ s/P%//;
1356 push(@words, $lines[$i]);
1361 # Now throw away any initial zero word from the table. This is a hack
1362 # that lets us reduce the size of info tables when the SRT field is not
1363 # needed: see comments StgFunInfoTable in InfoTables.h.
1365 # The .zero business is for Linux/ELF.
1366 # The .skip business is for Sparc/Solaris/ELF.
1367 # The .blockz business is for HPPA.
1369 # if ($words[0] =~ /^\t?(${T_DOT_WORD}\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) {
1374 for (; $i <= $#lines; $i++) {
1375 $after .= $lines[$i] . "\n";
1378 # Alphas: If we have anonymous text (not part of a procedure), the
1379 # linker may complain about missing exception information. Bleh.
1380 # To suppress this, we place a .ent/.end pair around the code.
1381 # At the same time, we have to be careful and not enclose any leading
1382 # .file/.loc directives.
1383 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1384 local ($ident) = $1;
1385 $before =~ s/^((\s*\.(file|loc)\s+[^\n]*\n)*)/$1\t.ent $ident\n/;
1386 $after .= "\t.end $ident\n";
1389 # Alphas: The heroic Simon Marlow found a bug in the Digital UNIX
1390 # assembler (!) wherein .quad constants inside .text sections are
1391 # first narrowed to 32 bits then sign-extended back to 64 bits.
1392 # This obviously screws up our 64-bit bitmaps, so we work around
1393 # the bug by replacing .quad with .align 3 + .long + .long [ccshan]
1394 if ( $TargetPlatform =~ /^alpha-/ ) {
1396 if (/^\s*\.quad\s+([-+0-9].*\S)\s*$/ && length $1 >= 10) {
1397 local ($number) = $1;
1398 if ($number =~ /^([-+])?(0x?)?([0-9]+)$/) {
1399 local ($sign, $base, $digits) = ($1, $2, $3);
1400 $base = (10, 8, 16)[length $base];
1401 local ($hi, $lo) = (0, 0);
1402 foreach $i (split(//, $digits)) {
1403 $j = $lo * $base + $i;
1404 $lo = $j % 4294967296;
1405 $hi = $hi * $base + ($j - $lo) / 4294967296;
1407 ($hi, $lo) = (4294967295 - $hi, 4294967296 - $lo)
1409 $_ = "\t.align 3\n\t.long $lo\n\t.long $hi\n";
1410 # printf STDERR "TURNING %s into 0x %08x %08x\n", $number, $hi, $lo;
1412 print STDERR "Cannot handle \".quad $number\" in info table\n";
1420 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1421 . join("\n", @words) . "\n"
1424 # print STDERR "before=$before\n";
1425 # print STDERR "label=$label\n";
1426 # print STDERR "words=",(reverse @words),"\n";
1427 # print STDERR "after=$after\n";
1433 The HP is a major nuisance. The threaded code mangler moved info
1434 tables from data space to code space, but unthreaded code in the RTS
1435 still has references to info tables in data space. Since the HP
1436 linker is very precise about where symbols live, we need to patch the
1437 references in the unthreaded RTS as well.
1440 sub mini_mangle_asm_hppa {
1441 local($in_asmf, $out_asmf) = @_;
1443 open(INASM, "< $in_asmf")
1444 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1445 open(OUTASM,"> $out_asmf")
1446 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1449 s/_info,DATA/_info,CODE/; # Move _info references to code space
1455 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1456 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1462 sub tidy_up_and_die {
1463 local($return_val, $msg) = @_;
1465 exit (($return_val == 0) ? 0 : 1);