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 $T_CONST_LBL = '^\$C(\d+):$'; # 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 = '\.quad';
104 $T_DOT_GLOBAL = '^\t\.globl';
105 $T_HDR_literal = "\.rdata\n\t\.align 3\n";
106 $T_HDR_misc = "\.text\n\t\.align 3\n";
107 $T_HDR_data = "\.data\n\t\.align 3\n";
108 $T_HDR_consist = "\.text\n";
109 $T_HDR_closure = "\.data\n\t\.align 3\n";
110 $T_HDR_srt = "\.text\n\t\.align 3\n";
111 $T_HDR_info = "\.text\n\t\.align 3\n";
112 $T_HDR_entry = "\.text\n\t\.align 3\n";
113 $T_HDR_fast = "\.text\n\t\.align 3\n";
114 $T_HDR_vector = "\.text\n\t\.align 3\n";
115 $T_HDR_direct = "\.text\n\t\.align 3\n";
117 #--------------------------------------------------------#
118 } elsif ( $TargetPlatform =~ /^hppa/ ) {
120 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
121 $T_US = ''; # _ if symbols have an underscore on the front
122 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
123 $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like
126 $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)';
127 $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)';
129 $T_hsc_cc_PAT = '\.STRING.*\)(hsc|cc) (.*)\\\\x09(.*)\\\\x00"';
130 $T_DOT_WORD = '\.(blockz|word|half|byte)';
131 $T_DOT_GLOBAL = '^\s+\.EXPORT';
132 $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
133 $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
134 $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
135 $T_HDR_consist = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
136 $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
137 $T_HDR_srt = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
138 $T_HDR_info = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
139 $T_HDR_entry = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
140 $T_HDR_fast = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
141 $T_HDR_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
142 $T_HDR_direct = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
144 #--------------------------------------------------------#
145 } elsif ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd2|openbsd|nextstep3|cygwin32|mingw32)$/ ) {
146 # NeXT added but not tested. CaS
148 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
149 $T_US = '_'; # _ if symbols have an underscore on the front
150 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
151 $T_CONST_LBL = '^LC(\d+):$';
153 $T_X86_PRE_LLBL_PAT = 'L';
154 $T_X86_PRE_LLBL = 'L';
155 $T_X86_BADJMP = '^\tjmp [^L\*]';
157 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*)\n)';
158 $T_COPY_DIRVS = '\.(globl|stab)';
159 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
160 $T_DOT_WORD = '\.(long|word|value|byte|space)';
161 $T_DOT_GLOBAL = '\.globl';
162 $T_HDR_literal = "\.text\n\t\.align 2\n";
163 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
164 $T_HDR_data = "\.data\n\t\.align 2\n";
165 $T_HDR_consist = "\.text\n";
166 $T_HDR_closure = "\.data\n\t\.align 2\n";
167 $T_HDR_closure = "\.data\n\t\.align 2\n\t.long 0\n" if ( $TargetPlatform =~ /.*-mingw32$/ );
168 $T_HDR_srt = "\.text\n\t\.align 2\n";
169 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
170 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
171 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
172 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
173 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
175 #--------------------------------------------------------#
176 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|freebsd|netbsd)$/ ) {
178 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
179 $T_US = ''; # _ if symbols have an underscore on the front
180 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
181 ($TargetPlatform =~ /-(linux|freebsd|netbsd)$/) ? '#' : '/' ;
182 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
184 $T_X86_PRE_LLBL_PAT = '\.L';
185 $T_X86_PRE_LLBL = '.L';
186 $T_X86_BADJMP = '^\tjmp\s+[^\.\*]';
188 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,\s*0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.Lfe.*\n\s*\.size\s+.*|\.size\s+.*|\.ident.*)\n)';
189 $T_COPY_DIRVS = '\.(globl)';
191 if ( $TargetPlatform =~ /freebsd|netbsd/ ) {
192 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
194 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
197 $T_DOT_WORD = '\.(long|value|byte|zero)';
198 $T_DOT_GLOBAL = '\.globl';
199 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
200 $T_HDR_misc = "\.text\n\t\.align 4\n";
201 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
202 $T_HDR_consist = "\.text\n";
203 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
204 $T_HDR_srt = "\.text\n\t\.align 4\n"; # ToDo: change align?
205 $T_HDR_info = "\.text\n\t\.align 4\n"; # NB: requires padding
206 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
207 $T_HDR_fast = "\.text\n\t\.align 4\n";
208 $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding
209 $T_HDR_direct = "\.text\n\t\.align 4\n";
211 #--------------------------------------------------------#
212 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
214 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
215 $T_US = '_'; # _ if symbols have an underscore on the front
216 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
217 $T_CONST_LBL = '^LC(\d+):$';
220 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
221 $T_COPY_DIRVS = '\.(globl|proc|stab)';
222 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
224 $T_DOT_WORD = '\.long';
225 $T_DOT_GLOBAL = '\.globl';
226 $T_HDR_literal = "\.text\n\t\.even\n";
227 $T_HDR_misc = "\.text\n\t\.even\n";
228 $T_HDR_data = "\.data\n\t\.even\n";
229 $T_HDR_consist = "\.text\n";
230 $T_HDR_closure = "\.data\n\t\.even\n";
231 $T_HDR_srt = "\.text\n\t\.even\n";
232 $T_HDR_info = "\.text\n\t\.even\n";
233 $T_HDR_entry = "\.text\n\t\.even\n";
234 $T_HDR_fast = "\.text\n\t\.even\n";
235 $T_HDR_vector = "\.text\n\t\.even\n";
236 $T_HDR_direct = "\.text\n\t\.even\n";
238 #--------------------------------------------------------#
239 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
241 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
242 $T_US = ''; # _ if symbols have an underscore on the front
243 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
244 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
247 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
248 $T_COPY_DIRVS = '\.(globl|ent)';
250 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
251 $T_DOT_WORD = '\.word';
252 $T_DOT_GLOBAL = '^\t\.globl';
253 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
254 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
255 $T_HDR_data = "\t\.data\n\t\.align 2\n";
256 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
257 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
258 $T_HDR_srt = "\t\.text\n\t\.align 2\n";
259 $T_HDR_info = "\t\.text\n\t\.align 2\n";
260 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
261 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
262 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
263 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
265 #--------------------------------------------------------#
266 } elsif ( $TargetPlatform =~ /^powerpc-.*|^rs6000-.*/ ) {
268 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
269 $T_US = ''; # _ if symbols have an underscore on the front
270 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
271 $T_CONST_LBL = 'NOT APPLICABLE'; # regexp for what such a lbl looks like
274 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
275 $T_COPY_DIRVS = '\.(l?globl)';
277 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
278 $T_DOT_WORD = '\.long';
279 $T_DOT_GLOBAL = '\.globl';
280 $T_HDR_toc = "\.toc\n";
281 $T_HDR_literal = "\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
282 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
283 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
284 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
285 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
286 $T_HDR_srt = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
287 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
288 $T_HDR_entry = "# entry\n\.csect \.text[PR]\n\t\.align 2\n";
289 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
290 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
291 $T_HDR_direct = "# direct\n";
293 #--------------------------------------------------------#
294 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
296 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
297 $T_US = ''; # _ if symbols have an underscore on the front
298 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
299 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
302 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
303 $T_COPY_DIRVS = '\.(global|proc|stab)';
305 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
306 $T_DOT_WORD = '\.(word|byte|half|skip|uahalf|uaword)';
307 $T_DOT_GLOBAL = '^\t\.global';
308 $T_HDR_literal = "\.text\n\t\.align 8\n";
309 $T_HDR_misc = "\.text\n\t\.align 4\n";
310 $T_HDR_data = "\.data\n\t\.align 8\n";
311 $T_HDR_consist = "\.text\n";
312 $T_HDR_closure = "\.data\n\t\.align 4\n";
313 $T_HDR_srt = "\.data\n\t\.align 4\n";
314 $T_HDR_info = "\.text\n\t\.align 4\n";
315 $T_HDR_entry = "\.text\n\t\.align 4\n";
316 $T_HDR_fast = "\.text\n\t\.align 4\n";
317 $T_HDR_vector = "\.text\n\t\.align 4\n";
318 $T_HDR_direct = "\.text\n\t\.align 4\n";
320 #--------------------------------------------------------#
321 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
323 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
324 $T_US = '_'; # _ if symbols have an underscore on the front
325 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
326 $T_CONST_LBL = '^LC(\d+):$';
329 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
330 $T_COPY_DIRVS = '\.(global|proc|stab)';
331 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
333 $T_DOT_WORD = '\.word';
334 $T_DOT_GLOBAL = '^\t\.global';
335 $T_HDR_literal = "\.text\n\t\.align 8\n";
336 $T_HDR_misc = "\.text\n\t\.align 4\n";
337 $T_HDR_data = "\.data\n\t\.align 8\n";
338 $T_HDR_consist = "\.text\n";
339 $T_HDR_closure = "\.data\n\t\.align 4\n";
340 $T_HDR_srt = "\.data\n\t\.align 4\n";
341 $T_HDR_info = "\.text\n\t\.align 4\n";
342 $T_HDR_entry = "\.text\n\t\.align 4\n";
343 $T_HDR_fast = "\.text\n\t\.align 4\n";
344 $T_HDR_vector = "\.text\n\t\.align 4\n";
345 $T_HDR_direct = "\.text\n\t\.align 4\n";
347 #--------------------------------------------------------#
349 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
354 print STDERR "T_STABBY: $T_STABBY\n";
355 print STDERR "T_US: $T_US\n";
356 print STDERR "T_PRE_APP: $T_PRE_APP\n";
357 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
358 print STDERR "T_POST_LBL: $T_POST_LBL\n";
359 if ( $TargetPlatform =~ /^i386-/ ) {
360 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
361 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
362 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
364 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
365 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
366 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
367 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
368 print STDERR "T_HDR_literal: $T_HDR_literal\n";
369 print STDERR "T_HDR_misc: $T_HDR_misc\n";
370 print STDERR "T_HDR_data: $T_HDR_data\n";
371 print STDERR "T_HDR_consist: $T_HDR_consist\n";
372 print STDERR "T_HDR_closure: $T_HDR_closure\n";
373 print STDERR "T_HDR_info: $T_HDR_info\n";
374 print STDERR "T_HDR_entry: $T_HDR_entry\n";
375 print STDERR "T_HDR_fast: $T_HDR_fast\n";
376 print STDERR "T_HDR_vector: $T_HDR_vector\n";
377 print STDERR "T_HDR_direct: $T_HDR_direct\n";
383 %************************************************************************
385 \subsection{Mangle away}
387 %************************************************************************
391 local($in_asmf, $out_asmf) = @_;
393 # multi-line regexp matching:
398 &init_TARGET_STUFF();
399 &init_FUNNY_THINGS();
401 open(INASM, "< $in_asmf")
402 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
403 open(OUTASM,"> $out_asmf")
404 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
406 # read whole file, divide into "chunks":
407 # record some info about what we've found...
409 @chk = (); # contents of the chunk
410 $numchks = 0; # number of them
411 @chkcat = (); # what category of thing in each chunk
412 @chksymb = (); # what symbol(base) is defined in this chunk
413 %slowchk = (); # ditto, its regular "slow" entry code
414 %fastchk = (); # ditto, fast entry code
415 %closurechk = (); # ditto, the (static) closure
416 %srtchk = (); # ditto, its SRT (for top-level things)
417 %infochk = (); # given a symbol base, say what chunk its info tbl is in
418 %vectorchk = (); # ditto, return vector table
419 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
421 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
424 tr/\r//d if $TargetPlatform =~ /-mingw32$/;
425 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
426 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
427 next if /^\t\.def.*endef$/;
428 next if /${T_PRE_APP}(NO_)?APP/o;
429 next if /^;/ && $TargetPlatform =~ /^hppa/;
431 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc|rs6000)-/;
433 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-|^rs6000-/;
435 if ( $TargetPlatform =~ /^mips-/
436 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
437 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
439 # As a temporary solution for compiling "foreign export" declarations,
440 # we use global variables to pass arguments from C to STG land.
441 # These declarations live in the .hc file and not in the generated C
442 # stub file, so we let them pass through here.
443 } elsif ( /^\t\.comm\t__fexp_.*$/ ) {
445 $chkcat[$i] = 'data';
448 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
449 # duplicated from the bottom
453 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
454 # Alphas: Local labels not to be confused with new chunks
457 # NB: all the rest start with a non-space
459 } elsif ( $TargetPlatform =~ /^mips-/
460 && /^\d+:/ ) { # a funny-looking very-local label
463 } elsif ( /$T_CONST_LBL/o ) {
465 $chkcat[$i] = 'literal';
468 } elsif ( /^${T_US}__stg_split_marker(\d*)${T_POST_LBL}$/o ) {
470 $chkcat[$i] = 'splitmarker';
473 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
476 $chkcat[$i] = 'infotbl';
477 $chksymb[$i] = $symb;
479 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
481 $infochk{$symb} = $i;
483 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(entry|ret)${T_POST_LBL}$/o ) {
485 $chkcat[$i] = 'slow';
490 } elsif ( /^${T_US}([A-Za-z0-9_]+)_fast\d*${T_POST_LBL}$/o ) {
492 $chkcat[$i] = 'fast';
497 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
499 $chkcat[$i] = 'closure';
502 $closurechk{$1} = $i;
504 } elsif ( /^${T_US}([A-Za-z0-9_]+)_srt${T_POST_LBL}$/o ) {
511 } elsif ( /^${T_US}([A-Za-z0-9_]+)_ct${T_POST_LBL}$/o ) {
513 $chkcat[$i] = 'data';
516 } elsif ( /^${T_US}ghc.*c_ID${T_POST_LBL}/o ) {
518 $chkcat[$i] = 'consist';
520 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
523 } elsif ( /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
524 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
525 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
526 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
529 $chkcat[$i] = 'data';
532 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
537 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^LC\.\.([0-9]+)/ ) {
542 } elsif ( /^${T_US}([A-Za-z0-9_]+)_cc(s)?${T_POST_LBL}$/o ) {
543 # all CC_ symbols go in the data section...
545 $chkcat[$i] = 'data';
548 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(alt|dflt)${T_POST_LBL}$/o ) {
550 $chkcat[$i] = 'misc';
553 #$chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-|^rs6000-/) ; #rm andre
555 } elsif ( /^${T_US}([A-Za-z0-9_]+)_vtbl${T_POST_LBL}$/o ) {
557 $chkcat[$i] = 'vector';
562 # As a temporary solution for compiling "foreign export" declarations,
563 # we use global variables to pass arguments from C to STG land.
564 # These declarations live in the .hc file and not in the generated C
565 # stub file, so we let them pass through here.
566 } elsif ( /^[\t ]+\.comm[\t ]+__fexp_.*$/ ) {
568 $chkcat[$i] = 'data';
571 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
572 && /^[A-Za-z0-9][A-Za-z0-9_]*:/ ) {
573 # Some Solaris system headers contain function definitions (as
574 # opposed to mere prototypes), which end up in the .hc file when
575 # a Haskell module foreign imports the corresponding system
576 # functions (most notably stat()). We put them into the text
577 # segment. Note that this currently does not extend to function
578 # names starting with an underscore.
581 $chkcat[$i] = 'misc';
584 } elsif ( /^${T_US}[A-Za-z0-9_]/o
585 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
587 && ( $TargetPlatform !~ /^powerpc|^rs6000/ # ditto
588 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
591 print "Funny global thing?: $_"
592 unless $KNOWN_FUNNY_THING{$thing}
593 || /^${T_US}stg_.*${T_POST_LBL}$/o # RTS internals
594 || /^${T_US}__fexp_.*${T_POST_LBL}$/o # foreign export
595 || /^${T_US}__init.*${T_POST_LBL}$/o # __init<module>
596 || /^${T_US}.*_btm${T_POST_LBL}$/o # large bitmaps
597 || /^${T_US}.*_closure_tbl${T_POST_LBL}$/o # closure tables
598 || /^_uname:/o; # x86/Solaris2
600 $chkcat[$i] = 'misc';
601 if ($TargetPlatform =~ /^powerpc-|^rs6000-/)
602 { $chksymb[$i] = $thing; }
603 else { $chksymb[$i] = ''; };
605 } else { # simple line (duplicated at the top)
610 $numchks = $#chk + 1;
612 # the division into chunks is imperfect;
613 # we throw some things over the fence into the next
616 # also, there are things we would like to know
617 # about the whole module before we start spitting
620 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
622 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
624 # Alphas: NB: we start meddling at chunk 1, not chunk 0
625 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
626 # spits a ".quad 0" in after the v first ".rdata"; we
627 # detect this special case (tossing the ".quad 0")!
628 local($magic_rdata_seen) = 0;
630 # HPPAs, MIPSen: also start medding at chunk 1
632 if ($TargetPlatform =~ /^powerpc|^rs6000/) {
633 print OUTASM $T_HDR_toc; # yes, we have to put a .toc
634 # in the beginning of every file!
635 %tocequiv = (); # maps toc symbol number to toc symbol
636 %revtocequiv = (); # maps toc symbol to toc symbol number
637 for ($i = 1; $i < $numchks; $i++) {
638 $chk[$i] =~ s/\[RW\]//g;
639 $chk[$i] =~ s/\[DS\]//g;
640 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
642 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
643 #ToDo: instead of all these changes, just fix mangle_powerpc_tailjump and delete/ignore these tocs?
644 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
645 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
646 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
647 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
648 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(alt_\S+)/\t\.tc \1\[TC\],\.\2/;
649 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
651 $tocnumber = $chksymb[$i];
653 $tocsymb =~ s/^LC\.\.\d+:\n//;
654 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
655 $tocequiv{$tocnumber} = $tocsymb;
657 } elsif ( $chkcat[$i] eq 'toc' && $chk[$i] =~ /\.byte/ ) {
658 $chkcat[$i] = 'literal';
663 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
664 $c = $chk[$i]; # convenience copy
666 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
668 # toss all prologue stuff; HPPA is pretty weird
670 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
672 # be slightly paranoid to make sure there's
673 # nothing surprising in there
674 if ( $c =~ /--- BEGIN ---/ ) {
675 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
677 if ($TargetPlatform =~ /^i386-/) {
678 $p =~ s/^\tpushl\s+\%edi\n//;
679 $p =~ s/^\tpushl\s+\%esi\n//;
680 $p =~ s/^\tpushl\s+\%ebx\n//;
681 $p =~ s/^\tsubl\s+\$\d+,\s*\%esp\n//;
682 $p =~ s/^\tmovl\s+\$\d+,\s*\%eax\n\tcall\s+__alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
683 } elsif ($TargetPlatform =~ /^m68k-/) {
684 $p =~ s/^\tlink a6,#-?\d.*\n//;
685 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
686 # The above showed up in the asm code,
687 # so I added it here.
688 # I hope it's correct.
690 $p =~ s/^\tmovel d2,sp\@-\n//;
691 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
692 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
693 } elsif ($TargetPlatform =~ /^mips-/) {
694 # the .frame/.mask/.fmask that we use is the same
695 # as that produced by GCC for miniInterpret; this
696 # gives GDB some chance of figuring out what happened
697 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
698 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
699 $p =~ s/^\t\.(mask|fmask).*\n//g;
700 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
701 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
702 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
703 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
704 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
705 $p =~ s/__FRAME__/$FRAME/;
706 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000/) {
707 $p =~ s/^\tmflr 0\n//;
708 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
709 $p =~ s/^\tstw? 0,\d+\(1\)\n//g;
710 $p =~ s/^\tstw? 1,\d+\(1\)\n//g; #mc
711 $p =~ s/^\tlw?z 0,0\(1\)\n//g; #mc
712 $p =~ s/^\tstw?u 1,-\d+\(1\)\n//;
713 $p =~ s/^\tstw? \d+,-\d+\(1\)\n//g;
714 $p =~ s/^\tstfd \d+,-\d+\(1\)\n//g;
716 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
719 # HWL HACK: dont die, just print a warning
720 #print stderr "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
721 # && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
722 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
723 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
725 # glue together what's left
727 $c =~ s/\n\t\n/\n/; # junk blank line
731 if ( $TargetPlatform =~ /^mips-/ ) {
732 # MIPS: first, this basic sequence may occur "--- END ---" or not
733 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
736 # toss all epilogue stuff; again, paranoidly
737 if ( $c =~ /--- END ---/ ) {
738 if (($r, $e) = split(/--- END ---/, $c)) {
739 if ($TargetPlatform =~ /^i386-/) {
741 $e =~ s/^\tpopl\s+\%edi\n//;
742 $e =~ s/^\tpopl\s+\%esi\n//;
743 $e =~ s/^\tpopl\s+\%edx\n//;
744 $e =~ s/^\tpopl\s+\%ecx\n//;
745 $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//;
746 $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//;
747 } elsif ($TargetPlatform =~ /^m68k-/) {
748 $e =~ s/^\tunlk a6\n//;
750 } elsif ($TargetPlatform =~ /^mips-/) {
751 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
752 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
753 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
754 $e =~ s/^\tj\t\$31\n//;
755 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
756 $e =~ s/^\taddi 1,1,\d+\n//;
757 $e =~ s/^\tcal 1,\d+\(1\)\n//;
758 $e =~ s/^\tlw?z? \d+,\d+\(1\)\n//;
759 $e =~ s/^\tmtlr 0\n//;
762 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
765 print "WARNING: Epilogue junk?: $e\n" if $e =~ /^\t\s*[^\.\s\n]/
766 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
768 # glue together what's left
770 $c =~ s/\n\t\n/\n/; # junk blank line
774 # On SPARCs, we don't do --- BEGIN/END ---, we just
775 # toss the register-windowing save/restore/ret* instructions
777 if ( $TargetPlatform =~ /^sparc-/ ) {
778 $c =~ s/^\t(save.*|restore|ret|retl)\n//g;
779 # throw away PROLOGUE comments
780 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
783 # On Alphas, the prologue mangling is done a little later (below)
785 # toss all calls to __DISCARD__
786 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
788 # MIPS: that may leave some gratuitous asm macros around
789 # (no harm done; but we get rid of them to be tidier)
790 $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/
791 if $TargetPlatform =~ /^mips-/;
793 # toss stack adjustment after DoSparks
794 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
795 if $TargetPlatform =~ /^m68k-/; # this looks old...
797 if ( $TargetPlatform =~ /^alpha-/ &&
798 ! $magic_rdata_seen &&
799 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
800 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
801 $magic_rdata_seen = 1;
804 # pick some end-things and move them to the next chunk
806 # pin a funny end-thing on (for easier matching):
807 $c .= 'FUNNY#END#THING';
809 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
813 # on x86 we try not to copy any directives into a literal
814 # chunk, rather we keep looking for the next real chunk. This
815 # is because we get things like
817 # .globl blah_closure
823 if ( $TargetPlatform =~ /^(i386|sparc)/ && $to_move =~ /${T_COPY_DIRVS}/ ) {
825 while ( $j < $numchks && $chk[$j] =~ /$T_CONST_LBL/) {
828 if ( $j < $numchks ) {
829 $chk[$j] = $to_move . $chk[$j];
833 elsif ( $i < ($numchks - 1)
834 && ( $to_move =~ /${T_COPY_DIRVS}/
835 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
836 $chk[$i + 1] = $to_move . $chk[$i + 1];
837 # otherwise they're tossed
840 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
843 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
845 # toss all prologue stuff, except for loading gp, and the ..ng address
846 if (($p, $r) = split(/^\t\.prologue/, $c)) {
847 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
848 $c = $keep . "..ng:\n";
850 print STDERR "malformed code block ($ent)?\n"
853 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
856 $c =~ s/FUNNY#END#THING//;
858 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
860 $chk[$i] = $c; # update w/ convenience copy
863 if ( $TargetPlatform =~ /^alpha-/ ) {
864 # print out the header stuff first
865 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
866 print OUTASM $chk[0];
868 } elsif ( $TargetPlatform =~ /^hppa/ ) {
869 print OUTASM $chk[0];
871 } elsif ( $TargetPlatform =~ /^mips-/ ) {
872 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
874 # get rid of horrible "<dollar>Revision: .*$" strings
875 local(@lines0) = split(/\n/, $chk[0]);
877 while ( $z <= $#lines0 ) {
878 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
881 while ( $z <= $#lines0 ) {
883 last if $lines0[$z] =~ /[,\t]0x0$/;
889 $chk[0] = join("\n", @lines0);
890 $chk[0] =~ s/\n\n+/\n/;
891 print OUTASM $chk[0];
894 # print out all the literal strings next
895 for ($i = 0; $i < $numchks; $i++) {
896 if ( $chkcat[$i] eq 'literal' ) {
897 print OUTASM $T_HDR_literal, $chk[$i];
898 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
900 $chkcat[$i] = 'DONE ALREADY';
904 # on the HPPA, print out all the bss next
905 if ( $TargetPlatform =~ /^hppa/ ) {
906 for ($i = 1; $i < $numchks; $i++) {
907 if ( $chkcat[$i] eq 'bss' ) {
908 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
909 print OUTASM $chk[$i];
911 $chkcat[$i] = 'DONE ALREADY';
916 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
917 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
919 next if $chkcat[$i] eq 'DONE ALREADY';
921 if ( $chkcat[$i] eq 'misc' ) {
922 if ($chk[$i] ne '') {
923 print OUTASM $T_HDR_misc;
924 if ($TargetPlatform =~ /^powerpc-|^rs6000/) {
925 $chksymb[$i] =~ s/://;
926 #new if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
927 #new || $chksymb[$i] =~ /^$.{T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
928 #new { print OUTASM "\t\.globl $chksymb[$i]\n"; }
929 # if ($chksymb[$i] ne '' && $chksymb[$i] !~ /ret_[a-z]/ && $chksymb[$i] !~ /djn_[a-z]/)
930 if ($chksymb[$i] ne '')
931 { print OUTASM "\t\.globl \.$chksymb[$i]\n"; };
932 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
933 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
934 else { $r = $chk[$i]; $printDS = 0; };
935 $chk[$i] = &mangle_powerpc_tailjump($r);
937 &print_doctored($chk[$i], 0);
938 if ($TargetPlatform =~ /^powerpc-|^rs6000-/ && $printDS) {
939 #ok if ($chksymb[$i] !~ /\__init_Main/) {
940 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
941 print OUTASM "${p}TOC[tc0], 0\n";
946 } elsif ( $chkcat[$i] eq 'toss' ) {
947 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
949 } elsif ( $chkcat[$i] eq 'data' ) {
950 if ($chk[$i] ne '') {
951 print OUTASM $T_HDR_data;
952 print OUTASM $chk[$i];
955 } elsif ( $chkcat[$i] eq 'consist' ) {
956 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
957 local($consist) = "$1.$2.$3";
959 $consist =~ s/\//./g;
961 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
963 # Using a cygnus-2.7-96q4 gcc build on hppas, the
964 # consistency chunk for ghc_cc_ID often (but not always!)
965 # gets lumped with a bunch of .IMPORT directives containing info on
966 # the code or data space nature of external symbols. We can't
967 # toss these, so once the consistency ID has been turned into
968 # a representable symbol, we substitute it for the symbol
969 # that the string was attached to in the first place (ghc_cc_ID.)
970 # (The original string is also substituted away.)
972 # This change may affect the code output on other platforms in
973 # adverse ways, hence we restrict this hack hppa targets only.
976 if ( $TargetPlatform =~ /^hppa/ ) {
977 $chk[$i] =~ s/^${T_US}ghc.*c_ID$TPOSTLBL/$consist/o;
978 $chk[$i] =~ s/\t$T_hsc_cc_PAT/$T_HDR_misc/o;
979 $consist = $chk[$i]; #clumsily
981 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
983 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
984 # on mips: consistency string is just a v
985 # horrible bunch of .bytes,
986 # which I am too lazy to sort out (WDP 95/05)
988 print STDERR "Couldn't grok consistency: ", $chk[$i];
991 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
992 # we can just re-constitute this one...
993 # NB: we emit _three_ underscores no matter what,
994 # so ghc-split doesn't have to care.
995 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
997 } elsif ( $chkcat[$i] eq 'closure'
998 || $chkcat[$i] eq 'srt'
999 || $chkcat[$i] eq 'infotbl'
1000 || $chkcat[$i] eq 'slow'
1001 || $chkcat[$i] eq 'fast' ) { # do them in that order
1002 $symb = $chksymb[$i];
1005 if ( defined($closurechk{$symb}) ) {
1006 print OUTASM $T_HDR_closure;
1007 print OUTASM $chk[$closurechk{$symb}];
1008 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
1012 if ( defined($srtchk{$symb}) ) {
1013 print OUTASM $T_HDR_srt;
1014 print OUTASM $chk[$srtchk{$symb}];
1015 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
1019 if ( defined($infochk{$symb}) ) {
1021 print OUTASM $T_HDR_info;
1022 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1023 if ( !defined($slowchk{$symb}) && defined($fastchk{$symb}) ) {
1024 $fastname = $chk[$fastchk{$symb}];
1025 $fastname =~ s/([_A-Za-z]*_fast\d+):.*(.*\n)*/\1/;
1026 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long $fastname/;
1028 $chk[$infochk{$symb}] =~ s/\.long ([_A-Za-z]\S+_entry)/\.long \.\1/;
1029 $chk[$infochk{$symb}] =~ s/\.long ([A-Za-z]\S+_upd)/\.long \.\1/;
1030 print OUTASM $chk[$infochk{$symb}];
1032 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
1034 # entry code will be put here!
1036 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
1040 if ( defined($slowchk{$symb}) ) {
1042 # teach it to drop through to the fast entry point:
1043 $c = $chk[$slowchk{$symb}];
1045 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1046 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
1047 if ($symb =~ /^[_A-Z]/)
1049 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
1050 print OUTASM "\.csect ${symb}_entry[DS]\n";
1051 print OUTASM "${p}TOC[tc0], 0\n";
1053 $r =~ s/\.csect \.text\[PR\]\n//; # todo: properly - andre
1054 $c = &mangle_powerpc_tailjump($r);
1057 if ( defined($fastchk{$symb}) ) {
1058 if ( $TargetPlatform =~ /^alpha-/ ) {
1059 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1060 } elsif ( $TargetPlatform =~ /^hppa/ ) {
1061 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
1062 } elsif ( $TargetPlatform =~ /^i386-/ ) {
1063 # Reg alloc depending, gcc generated code may jump to the fast entry point via
1064 # a number of registers.
1065 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%edx\n\tjmp\s+\*\%edx\n//;
1066 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%ecx\n\tjmp\s+\*\%ecx\n//;
1067 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%eax\n\tjmp\s+\*\%eax\n//;
1068 # The next two only apply if we're not stealing %esi or %edi.
1069 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%esi\n\tjmp\s+\*\%esi\n// if ($StolenX86Regs < 3);
1070 $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%edi\n\tjmp\s+\*\%edi\n// if ($StolenX86Regs < 4);
1071 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1072 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1073 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
1074 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
1075 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
1076 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ ) {
1077 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
1078 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
1079 $c =~ s/^\tcall\s+${T_US}${symb}_fast\d+,.*\n\t\s*nop\n//;
1080 $c =~ s/^\tcall\s+${T_US}${symb}_fast\d+,.*\n(\t\s*[a-z].*\n)/$1/;
1082 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
1086 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
1087 # On alphas, hppa: no very good way to look for "dangling"
1088 # references to fast-entry point.
1089 # (questionable re hppa and mips...)
1090 print STDERR "still has jump to fast entry point:\n$c"
1091 if $c =~ /\b${T_US}${symb}_fast/;
1094 print OUTASM $T_HDR_entry;
1096 &print_doctored($c, 1); # NB: the 1!!!
1098 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1102 if ( defined($fastchk{$symb}) ) {
1103 $c = $chk[$fastchk{$symb}];
1104 if ( ! defined($slowchk{$symb})
1105 # ToDo: the || clause can go once we're no longer
1106 # concerned about producing exactly the same output as before
1107 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1109 print OUTASM $T_HDR_fast;
1111 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1112 local(@lbls) = split(/:/, $c);
1113 $fullname = $lbls[0];
1114 $fullname =~ s/$T_MOVE_DIRVS//g;
1115 if ( $fullname =~ /^[A-Z]/)
1116 { print OUTASM "\t\.globl \.${fullname}\n";
1118 # print OUTASM "\t\.lglobl \.${fullname}\n"; #todo: rm - andre
1120 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1121 $c = &mangle_powerpc_tailjump($c);
1123 &print_doctored($c, 0);
1124 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1127 } elsif ( $chkcat[$i] eq 'vector'
1128 || $chkcat[$i] eq 'direct' ) { # do them in that order
1129 $symb = $chksymb[$i];
1132 if ( defined($vectorchk{$symb}) ) {
1133 print OUTASM $T_HDR_vector;
1134 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1135 if ( $symb =~ /^[A-Z]/) {
1136 print OUTASM "\t\.globl \.${symb}_vtbl\n";
1137 print OUTASM "\t\.globl ${symb}_vtbl\n";
1139 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1140 print OUTASM ".${symb}_vtbl:\n";
1141 print OUTASM $chk[$vectorchk{$symb}];
1143 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1145 # direct return code will be put here!
1146 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1148 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1149 # Alphas: the commented nop is for the splitter, to ensure
1150 # that no module ends with a label as the very last
1151 # thing. (The linker will adjust the label to point
1152 # to the first code word of the next module linked in,
1153 # even if alignment constraints cause the label to move!)
1155 print OUTASM "\t# nop\n";
1158 } elsif ( $chkcat[$i] eq 'toc' ) {
1159 # silly optimisation to print tocs, since they come in groups...
1160 print OUTASM $T_HDR_toc;
1162 while ($chkcat[$j] eq 'toc')
1163 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1166 print OUTASM $chk[$j];
1168 $chkcat[$j] = 'DONE ALREADY';
1173 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1177 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1179 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1180 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1184 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1185 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1190 sub mash_hppa_prologue { # OK, epilogue, too
1193 # toss all prologue stuff
1194 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1196 # Lie about our .CALLINFO
1197 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1204 # toss all epilogue stuff
1205 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1207 # Sorry; we moved the _info stuff to the code segment.
1208 s/_info,DATA/_info,CODE/g;
1215 sub print_doctored {
1216 local($_, $need_fallthru_patch) = @_;
1218 if ( $TargetPlatform !~ /^i386-/
1219 || ! /^\t[a-z]/ # no instructions in here, apparently
1220 || /^${T_US}__init_[A-Za-z0-9_]+${T_POST_LBL}/) {
1224 # OK, must do some x86 **HACKING**
1226 local($entry_patch) = '';
1227 local($exit_patch) = '';
1229 # gotta watch out for weird instructions that
1230 # invisibly smash various regs:
1231 # rep* %ecx used for counting
1232 # scas* %edi used for destination index
1233 # cmps* %e[sd]i used for indices
1234 # loop* %ecx used for counting
1239 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1241 # * GCC used an "STG reg" for its own purposes
1243 # * some secret uses of machine reg, requiring STG reg
1244 # to be saved/restored
1246 # The most dangerous "GCC uses" of an "STG reg" are when
1247 # the reg holds the target of a jmp -- it's tricky to
1248 # insert the patch-up code before we get to the target!
1249 # So here we change the jmps:
1251 # --------------------------------------------------------
1252 # it can happen that we have jumps of the form...
1253 # jmp *<something involving %esp>
1255 # jmp <something involving another naughty register...>
1257 # a reasonably-common case is:
1259 # movl $_blah,<bad-reg>
1263 s/^\tmovl\s+\$${T_US}(.*),(\%e[abcd]x)\n\tjmp\s+\*\2/\tjmp $T_US$1/g;
1265 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1266 s/^\tmovl\s+(.*),\s*\%esi\n\tjmp\s+\*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1267 s/^\tjmp\s+\*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1268 s/^\tjmp\s+\*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1269 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1270 if /(jmp|call)\s+.*\%esi/;
1272 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1273 s/^\tmovl\s+(.*),\s*\%edi\n\tjmp\s+\*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1274 s/^\tjmp\s+\*(-?\d*\(.*\%edi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1275 s/^\tjmp\s+\*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1276 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1277 if /(jmp|call)\s+.*\%edi/;
1280 # OK, now we can decide what our patch-up code is going to
1283 # Offsets into register table - you'd better update these magic
1284 # numbers should you change its contents!
1285 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1286 local($OFFSET_Hp)=92;
1288 # Note funky ".=" stuff; we're *adding* to these _patch guys
1289 if ( $StolenX86Regs <= 2
1290 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1291 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1292 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1294 # nothing for call_{entry,exit} because %esi is callee-save
1296 if ( $StolenX86Regs <= 3
1297 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1298 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1299 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1301 # nothing for call_{entry,exit} because %edi is callee-save
1304 # --------------------------------------------------------
1305 # next, here we go with non-%esp patching!
1307 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1309 # Before calling GC we must set up the exit condition before the call
1310 # and entry condition when we come back
1312 # fix _all_ non-local jumps:
1314 s/^\tjmp\s+\*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1315 s/^\tjmp\s+${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1317 s/^(\tjmp\s+.*\n)/$exit_patch$1/g; # here's the fix...
1319 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1320 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1322 if ($StolenX86Regs == 2 ) {
1323 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1324 if /^\t(jmp|call)\s+.*\%e(si|di)/;
1325 } elsif ($StolenX86Regs == 3 ) {
1326 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1327 if /^\t(jmp|call)\s+.*\%edi/;
1330 # --------------------------------------------------------
1331 # that's it -- print it
1333 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1337 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1338 print OUTASM $exit_patch;
1339 # ToDo: make it not print if there is a "jmp" at the end
1345 sub init_FUNNY_THINGS {
1346 %KNOWN_FUNNY_THING = (
1348 # "${T_US}stg_.*{T_POST_LBL}", 1,
1353 The following table reversal is used for both info tables and return
1354 vectors. In both cases, we remove the first entry from the table,
1355 reverse the table, put the label at the end, and paste some code
1356 (that which is normally referred to by the first entry in the table)
1357 right after the table itself. (The code pasting is done elsewhere.)
1361 local($symb, $tbl, $discard1) = @_;
1363 local($before) = '';
1365 local(@imports) = (); # hppa only
1368 local(@lines) = split(/\n/, $tbl);
1369 local($i, $j); #local ($i, $extra, $words_to_pad, $j);
1371 # Deal with the header...
1372 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1373 $label .= $lines[$i] . "\n",
1374 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1375 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1376 || $lines[$i] =~ /^${T_US}\S+_vtbl${T_POST_LBL}$/o;
1378 $before .= $lines[$i] . "\n"; # otherwise...
1381 # Grab the table data...
1382 if ( $TargetPlatform !~ /^hppa/ ) {
1383 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1384 push(@words, $lines[$i]);
1386 } else { # hppa weirdness
1387 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+(${T_DOT_WORD}|\.IMPORT)/; $i++) {
1388 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1389 push(@imports, $lines[$i]);
1391 # We don't use HP's ``function pointers''
1392 # We just use labels in code space, like normal people
1393 $lines[$i] =~ s/P%//;
1394 push(@words, $lines[$i]);
1399 # now throw away the first word (SRT) iff it is empty.
1400 # The .zero business is for Linux/ELF.
1401 # The .skip business is for Sparc/Solaris/ELF.
1402 # The .blockz business is for HPPA.
1403 if ($discard1 && $words[0] =~ /^\t?(${T_DOT_WORD}\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) {
1407 # Padding removed to reduce code size and improve performance on Pentiums.
1409 # for 486-cache-friendliness, we want our tables aligned
1410 # on 16-byte boundaries (.align 4). Let's pad:
1411 # $extra = ($#words + 1) % 4;
1412 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1413 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1415 for (; $i <= $#lines; $i++) {
1416 $after .= $lines[$i] . "\n";
1419 # Alphas:If we have anonymous text (not part of a procedure), the
1420 # linker may complain about missing exception information. Bleh.
1421 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1422 $before = "\t.ent $1\n" . $before;
1423 $after .= "\t.end $1\n";
1427 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1428 . join("\n", @words) . "\n"
1431 # print STDERR "before=$before\n";
1432 # print STDERR "label=$label\n";
1433 # print STDERR "words=",(reverse @words),"\n";
1434 # print STDERR "after=$after\n";
1440 The HP is a major nuisance. The threaded code mangler moved info
1441 tables from data space to code space, but unthreaded code in the RTS
1442 still has references to info tables in data space. Since the HP
1443 linker is very precise about where symbols live, we need to patch the
1444 references in the unthreaded RTS as well.
1447 sub mini_mangle_asm_hppa {
1448 local($in_asmf, $out_asmf) = @_;
1450 open(INASM, "< $in_asmf")
1451 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1452 open(OUTASM,"> $out_asmf")
1453 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1456 s/_info,DATA/_info,CODE/; # Move _info references to code space
1462 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1463 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1469 sub mini_mangle_asm_powerpc {
1470 local($in_asmf, $out_asmf) = @_;
1472 open(INASM, "< $in_asmf")
1473 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1474 open(OUTASM,"> $out_asmf")
1475 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1478 s/long _PRStart/long ._PRStart/;
1479 s/long _PRIn_/long ._PRIn_/;
1480 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1481 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1482 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1483 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1484 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1485 s/\.tc EnterNodeCode\[TC]\,EnterNodeCode\[DS\]/\.tc EnterNodeCode\[TC]\,.EnterNodeCode/; # CONC
1486 s/\.tc CheckHeapCode\[TC]\,CheckHeapCode\[DS\]/\.tc CheckHeapCode\[TC]\,.CheckHeapCode/; # CONC
1491 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1492 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1495 sub mangle_powerpc_tailjump {
1497 local($maybe_more) = 1;
1498 while (($c =~ /\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1501 $lcsymb =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1502 # the checks for r1 and r2 are mostly paranoia...
1504 $r1 =~ s/(.*\n)*\tlw?z? (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1506 $r2 =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1509 $c =~ s/((.*\n)*)\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1517 sub tidy_up_and_die {
1518 local($return_val, $msg) = @_;
1520 exit (($return_val == 0) ? 0 : 1);