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_DOT_WORD = '\.(long|quad|byte|word)';
103 $T_DOT_GLOBAL = '^\t\.globl';
104 $T_HDR_literal = "\.rdata\n\t\.align 3\n";
105 $T_HDR_misc = "\.text\n\t\.align 3\n";
106 $T_HDR_data = "\.data\n\t\.align 3\n";
107 $T_HDR_rodata = "\.rdata\n\t\.align 3\n";
108 $T_HDR_closure = "\.data\n\t\.align 3\n";
109 $T_HDR_info = "\.text\n\t\.align 3\n";
110 $T_HDR_entry = "\.text\n\t\.align 3\n";
111 $T_HDR_vector = "\.text\n\t\.align 3\n";
113 #--------------------------------------------------------#
114 } elsif ( $TargetPlatform =~ /^hppa/ ) {
116 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
117 $T_US = ''; # _ if symbols have an underscore on the front
118 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
119 $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like
122 $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)';
123 $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)';
125 $T_DOT_WORD = '\.(blockz|word|half|byte)';
126 $T_DOT_GLOBAL = '^\s+\.EXPORT';
127 $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
128 $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
129 $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
130 $T_HDR_rodata = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
131 $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
132 $T_HDR_info = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
133 $T_HDR_entry = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
134 $T_HDR_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
136 #--------------------------------------------------------#
137 } elsif ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd2|nextstep3|cygwin32|mingw32)$/ ) {
138 # NeXT added but not tested. CaS
140 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
141 $T_US = '_'; # _ if symbols have an underscore on the front
142 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
143 $T_CONST_LBL = '^LC(\d+):$';
145 $T_X86_PRE_LLBL_PAT = 'L';
146 $T_X86_PRE_LLBL = 'L';
147 $T_X86_BADJMP = '^\tjmp [^L\*]';
149 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s.*|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*|\.lcomm.*)\n)';
150 $T_COPY_DIRVS = '\.(globl|stab|lcomm)';
151 $T_DOT_WORD = '\.(long|word|value|byte|space)';
152 $T_DOT_GLOBAL = '\.globl';
153 $T_HDR_literal = "\.text\n\t\.align 2\n";
154 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
155 $T_HDR_data = "\.data\n\t\.align 2\n";
156 $T_HDR_rodata = "\.text\n\t\.align 2\n";
157 $T_HDR_closure = "\.data\n\t\.align 2\n";
158 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
159 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
160 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
162 #--------------------------------------------------------#
163 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|freebsd|netbsd|openbsd)$/ ) {
165 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
166 $T_US = ''; # _ if symbols have an underscore on the front
167 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
168 ($TargetPlatform =~ /-(linux|freebsd|netbsd|openbsd)$/) ? '#' : '/' ;
169 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
171 $T_X86_PRE_LLBL_PAT = '\.L';
172 $T_X86_PRE_LLBL = '.L';
173 $T_X86_BADJMP = '^\tjmp\s+[^\.\*]';
175 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s.*|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.size\s+\S+\s*,\s*\d+|\.ident.*|\.local.*)\n)';
176 $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)';
178 $T_DOT_WORD = '\.(long|value|word|byte|zero)';
179 $T_DOT_GLOBAL = '\.globl';
180 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
181 $T_HDR_misc = "\.text\n\t\.align 4\n";
182 $T_HDR_data = "\.data\n\t\.align 4\n";
183 $T_HDR_rodata = "\.section\t\.rodata\n\t\.align 4\n";
184 $T_HDR_closure = "\.data\n\t\.align 4\n";
185 $T_HDR_info = "\.text\n\t\.align 4\n";
186 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
187 $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding
189 #--------------------------------------------------------#
190 } elsif ( $TargetPlatform =~ /^ia64-.*-linux$/ ) {
192 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
193 $T_US = ''; # _ if symbols have an underscore on the front
195 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
198 $T_MOVE_DIRVS = '^(\s*\.(global|proc|pred\.safe_across_calls|text|data|section|subsection|align|size|type|ident)\s+.*\n)';
199 $T_COPY_DIRVS = '\.(global|proc)';
201 $T_DOT_WORD = '\.(long|value|byte|zero)';
202 $T_DOT_GLOBAL = '\.global';
203 $T_HDR_literal = "\.section\t\.rodata\n";
204 $T_HDR_misc = "\.text\n\t\.align 8\n";
205 $T_HDR_data = "\.data\n\t\.align 8\n";
206 $T_HDR_rodata = "\.section\t\.rodata\n\t\.align 8\n";
207 $T_HDR_closure = "\.data\n\t\.align 8\n";
208 $T_HDR_info = "\.text\n\t\.align 8\n";
209 $T_HDR_entry = "\.text\n\t\.align 16\n";
210 $T_HDR_vector = "\.text\n\t\.align 8\n";
212 #--------------------------------------------------------#
213 } elsif ( $TargetPlatform =~ /^x86_64-.*-(linux|openbsd)$/ ) {
215 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
216 $T_US = ''; # _ if symbols have an underscore on the front
218 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
221 $T_MOVE_DIRVS = '^(\s*\.(globl|text|data|section|align|size|type|ident|local)\s+.*\n)';
222 $T_COPY_DIRVS = '\.(globl|local)';
224 $T_DOT_WORD = '\.(quad|long|value|byte|zero)';
225 $T_DOT_GLOBAL = '\.global';
227 $T_HDR_literal16 = "\.section\t\.rodata.cst16\n\t.align 16\n";
228 $T_HDR_literal = "\.section\t\.rodata\n";
230 $T_HDR_misc = "\.text\n\t\.align 8\n";
231 $T_HDR_data = "\.data\n\t\.align 8\n";
232 $T_HDR_rodata = "\.section\t\.rodata\n\t\.align 8\n";
234 # the assembler on x86_64/Linux refuses to generate code for
236 # where x is in the text section and y in the rodata section.
237 # It works if y is in the text section, though. This is probably
238 # going to cause difficulties for PIC, I imagine.
239 $T_HDR_relrodata= "\.text\n\t\.align 8\n";
241 $T_HDR_closure = "\.data\n\t\.align 8\n";
242 $T_HDR_info = "\.text\n\t\.align 8\n";
243 $T_HDR_entry = "\.text\n\t\.align 8\n";
244 $T_HDR_vector = "\.text\n\t\.align 8\n";
246 #--------------------------------------------------------#
247 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
249 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
250 $T_US = '_'; # _ if symbols have an underscore on the front
251 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
252 $T_CONST_LBL = '^LC(\d+):$';
255 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
256 $T_COPY_DIRVS = '\.(globl|proc|stab)';
258 $T_DOT_WORD = '\.long';
259 $T_DOT_GLOBAL = '\.globl';
260 $T_HDR_literal = "\.text\n\t\.even\n";
261 $T_HDR_misc = "\.text\n\t\.even\n";
262 $T_HDR_data = "\.data\n\t\.even\n";
263 $T_HDR_rodata = "\.text\n\t\.even\n";
264 $T_HDR_closure = "\.data\n\t\.even\n";
265 $T_HDR_info = "\.text\n\t\.even\n";
266 $T_HDR_entry = "\.text\n\t\.even\n";
267 $T_HDR_vector = "\.text\n\t\.even\n";
269 #--------------------------------------------------------#
270 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
272 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
273 $T_US = ''; # _ if symbols have an underscore on the front
274 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
275 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
278 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
279 $T_COPY_DIRVS = '\.(globl|ent)';
281 $T_DOT_WORD = '\.word';
282 $T_DOT_GLOBAL = '^\t\.globl';
283 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
284 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
285 $T_HDR_data = "\t\.data\n\t\.align 2\n";
286 $T_HDR_rodata = "\t\.rdata\n\t\.align 2\n";
287 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
288 $T_HDR_info = "\t\.text\n\t\.align 2\n";
289 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
290 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
292 #--------------------------------------------------------#
293 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ ) {
294 # Apple PowerPC Darwin/MacOS X.
295 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
296 $T_US = '_'; # _ if symbols have an underscore on the front
297 $T_PRE_APP = 'DOESNT APPLY'; # regexp that says what comes before APP/NO_APP
298 $T_CONST_LBL = '^\LC\d+:'; # regexp for what such a lbl looks like
301 $T_MOVE_DIRVS = '^(\s*(\.align \d+|\.text|\.data|\.const_data|\.cstring|\.non_lazy_symbol_pointer|\.const|\.static_const|\.literal4|\.literal8|\.static_data|\.globl \S+|\.section .*|\.lcomm.*)\n)';
302 $T_COPY_DIRVS = '\.(globl|lcomm)';
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\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_rodata = "\t\.const\n\t\.align 2\n";
311 $T_HDR_relrodata= "\t\.const_data\n\t\.align 2\n";
312 $T_HDR_closure = "\t\.data\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";
317 #--------------------------------------------------------#
318 } elsif ( $TargetPlatform =~ /^powerpc-.*-linux/ ) {
320 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
321 $T_US = ''; # _ if symbols have an underscore on the front
322 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
323 $T_CONST_LBL = '^\.LC\d+:'; # regexp for what such a lbl looks like
326 $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)';
327 $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)';
329 $T_DOT_WORD = '\.(long|short|byte|fill|space)';
330 $T_DOT_GLOBAL = '\.globl';
331 $T_HDR_toc = "\.toc\n";
332 $T_HDR_literal = "\t\.section\t.rodata\n\t\.align 2\n";
333 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
334 $T_HDR_data = "\t\.data\n\t\.align 2\n";
335 $T_HDR_rodata = "\t\.section\t.rodata\n\t\.align 2\n";
336 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
337 $T_HDR_info = "\t\.text\n\t\.align 2\n";
338 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
339 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
341 #--------------------------------------------------------#
342 } elsif ( $TargetPlatform =~ /^powerpc64-.*-linux/ ) {
344 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
345 $T_US = '\.'; # _ if symbols have an underscore on the front
346 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
347 $T_CONST_LBL = '^\.LC\d+:'; # regexp for what such a lbl looks like
350 $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)';
351 $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)';
353 $T_DOT_WORD = '\.(long|short|byte|fill|space)';
354 $T_DOT_GLOBAL = '\.globl';
355 $T_HDR_toc = "\.toc\n";
356 $T_HDR_literal = "\t\.section\t\".toc\",\"aw\"\n";
357 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
358 $T_HDR_data = "\t\.data\n\t\.align 2\n";
359 $T_HDR_rodata = "\t\.section\t.rodata\n\t\.align 2\n";
360 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
361 $T_HDR_info = "\t\.text\n\t\.align 2\n";
362 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
363 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
365 #--------------------------------------------------------#
366 } elsif ( $TargetPlatform =~ /^sparc-.*-(solaris2|openbsd)/ ) {
368 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
369 $T_US = ''; # _ if symbols have an underscore on the front
370 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
371 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
374 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\s*\.section.*|\s+\.type.*|\s+\.size.*)\n)';
375 $T_COPY_DIRVS = '\.(global|proc|stab)';
377 $T_DOT_WORD = '\.(long|word|byte|half|skip|uahalf|uaword)';
378 $T_DOT_GLOBAL = '^\t\.global';
379 $T_HDR_literal = "\.text\n\t\.align 8\n";
380 $T_HDR_misc = "\.text\n\t\.align 4\n";
381 $T_HDR_data = "\.data\n\t\.align 8\n";
382 $T_HDR_rodata = "\.text\n\t\.align 4\n";
383 $T_HDR_closure = "\.data\n\t\.align 4\n";
384 $T_HDR_info = "\.text\n\t\.align 4\n";
385 $T_HDR_entry = "\.text\n\t\.align 4\n";
386 $T_HDR_vector = "\.text\n\t\.align 4\n";
388 #--------------------------------------------------------#
389 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
391 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
392 $T_US = '_'; # _ if symbols have an underscore on the front
393 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
394 $T_CONST_LBL = '^LC(\d+):$';
397 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
398 $T_COPY_DIRVS = '\.(global|proc|stab)';
400 $T_DOT_WORD = '\.word';
401 $T_DOT_GLOBAL = '^\t\.global';
402 $T_HDR_literal = "\.text\n\t\.align 8\n";
403 $T_HDR_misc = "\.text\n\t\.align 4\n";
404 $T_HDR_data = "\.data\n\t\.align 8\n";
405 $T_HDR_rodata = "\.text\n\t\.align 4\n";
406 $T_HDR_closure = "\.data\n\t\.align 4\n";
407 $T_HDR_info = "\.text\n\t\.align 4\n";
408 $T_HDR_entry = "\.text\n\t\.align 4\n";
409 $T_HDR_vector = "\.text\n\t\.align 4\n";
411 #--------------------------------------------------------#
412 } elsif ( $TargetPlatform =~ /^sparc-.*-linux/ ) {
413 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
414 $T_US = ''; # _ if symbols have an underscore on the front
415 $T_PRE_APP = '#'; # regexp that says what comes before APP/NO_APP
416 # Probably doesn't apply anyway
417 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
420 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.seg|\.stab.*|\s+?\.section.*|\s+\.type.*|\s+\.size.*)\n)';
421 $T_COPY_DIRVS = '\.(global|globl|proc|stab)';
423 $T_DOT_WORD = '\.(long|word|nword|xword|byte|half|short|skip|uahalf|uaword)';
424 $T_DOT_GLOBAL = '^\t\.global';
425 $T_HDR_literal = "\.text\n\t\.align 8\n";
426 $T_HDR_misc = "\.text\n\t\.align 4\n";
427 $T_HDR_data = "\.data\n\t\.align 8\n";
428 $T_HDR_rodata = "\.text\n\t\.align 4\n";
429 $T_HDR_closure = "\.data\n\t\.align 4\n";
430 $T_HDR_info = "\.text\n\t\.align 4\n";
431 $T_HDR_entry = "\.text\n\t\.align 4\n";
432 $T_HDR_vector = "\.text\n\t\.align 4\n";
434 #--------------------------------------------------------#
436 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
440 if($T_HDR_relrodata eq "") {
442 # relrodata defaults to rodata.
443 $T_HDR_relrodata = $T_HDR_rodata;
447 print STDERR "T_STABBY: $T_STABBY\n";
448 print STDERR "T_US: $T_US\n";
449 print STDERR "T_PRE_APP: $T_PRE_APP\n";
450 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
451 print STDERR "T_POST_LBL: $T_POST_LBL\n";
452 if ( $TargetPlatform =~ /^i386-/ ) {
453 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
454 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
455 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
457 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
458 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
459 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
460 print STDERR "T_HDR_literal: $T_HDR_literal\n";
461 print STDERR "T_HDR_misc: $T_HDR_misc\n";
462 print STDERR "T_HDR_data: $T_HDR_data\n";
463 print STDERR "T_HDR_rodata: $T_HDR_rodata\n";
464 print STDERR "T_HDR_closure: $T_HDR_closure\n";
465 print STDERR "T_HDR_info: $T_HDR_info\n";
466 print STDERR "T_HDR_entry: $T_HDR_entry\n";
467 print STDERR "T_HDR_vector: $T_HDR_vector\n";
473 %************************************************************************
475 \subsection{Mangle away}
477 %************************************************************************
481 local($in_asmf, $out_asmf) = @_;
483 # multi-line regexp matching:
488 &init_TARGET_STUFF();
489 &init_FUNNY_THINGS();
491 open(INASM, "< $in_asmf")
492 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
493 open(OUTASM,"> $out_asmf")
494 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
496 # read whole file, divide into "chunks":
497 # record some info about what we've found...
499 @chk = (); # contents of the chunk
500 $numchks = 0; # number of them
501 @chkcat = (); # what category of thing in each chunk
502 @chksymb = (); # what symbol(base) is defined in this chunk
503 %entrychk = (); # ditto, its entry code
504 %closurechk = (); # ditto, the (static) closure
505 %srtchk = (); # ditto, its SRT (for top-level things)
506 %infochk = (); # given a symbol base, say what chunk its info tbl is in
507 %vectorchk = (); # ditto, return vector table
508 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
510 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
513 tr/\r//d if $TargetPlatform =~ /-mingw32$/; # In case Perl doesn't convert line endings
514 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
515 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
516 next if /^\t\.def.*endef$/;
517 next if /${T_PRE_APP}(NO_)?APP/o;
518 next if /^;/ && $TargetPlatform =~ /^hppa/;
520 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|ia64)-/;
522 if ( $TargetPlatform =~ /^mips-/
523 && /^\t\.(globl\S+\.text|comm\t)/ ) {
524 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
525 # Treat .comm variables as data. These show up in two (known) places:
527 # - the module_registered variable used in the __stginit fragment.
528 # even though these are declared static and initialised, gcc 3.3
529 # likes to make them .comm, presumably to save space in the
532 # - global variables used to pass arguments from C to STG in
533 # a foreign export. (is this still true? --SDM)
535 } elsif ( /^\t\.comm.*$/ ) {
537 $chkcat[$i] = 'data';
540 # Labels ending "_str": these are literal strings.
541 } elsif ( /^${T_US}([A-Za-z0-9_]+)_str${T_POST_LBL}$/ ) {
543 $chkcat[$i] = 'rodata';
545 } elsif ( $TargetPlatform =~ /-darwin/
546 && (/^\s*\.subsections_via_symbols/
547 ||/^\s*\.no_dead_strip.*/)) {
548 # Don't allow Apple's linker to do any dead-stripping of symbols
549 # in this file, because it will mess up info-tables in mangled
551 # The .no_dead_strip directives are actually put there by
552 # the gcc3 "used" attribute on entry points.
554 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && (
555 /^\s*\.picsymbol_stub/
556 || /^\s*\.section __TEXT,__picsymbol_stub1,.*/
557 || /^\s*\.section __TEXT,__picsymbolstub1,.*/
558 || /^\s*\.symbol_stub/
559 || /^\s*\.section __TEXT,__symbol_stub1,.*/
560 || /^\s*\.section __TEXT,__symbolstub1,.*/
561 || /^\s*\.lazy_symbol_pointer/
562 || /^\s*\.non_lazy_symbol_pointer/ ))
565 $chkcat[$i] = 'dyld';
568 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
569 # duplicated from the bottom
573 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
574 # Alphas: Local labels not to be confused with new chunks
576 # NB: all the rest start with a non-space
578 } elsif ( $TargetPlatform =~ /^mips-/
579 && /^\d+:/ ) { # a funny-looking very-local label
582 } elsif ( /$T_CONST_LBL/o ) {
584 $chkcat[$i] = 'literal';
587 } elsif ( /^${T_US}__stg_split_marker(\d*)${T_POST_LBL}$/o ) {
589 $chkcat[$i] = 'splitmarker';
592 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
595 $chkcat[$i] = 'infotbl';
596 $chksymb[$i] = $symb;
598 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
600 $infochk{$symb} = $i;
602 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(entry|ret)${T_POST_LBL}$/o ) {
604 $chkcat[$i] = 'entry';
609 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
611 $chkcat[$i] = 'closure';
614 $closurechk{$1} = $i;
616 } elsif ( /^${T_US}([A-Za-z0-9_]+)_srt${T_POST_LBL}$/o ) {
623 } elsif ( /^${T_US}([A-Za-z0-9_]+)_ct${T_POST_LBL}$/o ) {
625 $chkcat[$i] = 'data';
628 } elsif ( /^${T_US}(stg_ap_stack_entries|stg_stack_save_entries|stg_arg_bitmaps)${T_POST_LBL}$/o ) {
630 $chkcat[$i] = 'data';
633 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
636 } elsif ( /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
637 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
638 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
639 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
642 $chkcat[$i] = 'data';
645 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
650 } elsif ( /^${T_US}([A-Za-z0-9_]+)_cc(s)?${T_POST_LBL}$/o ) {
651 # all CC_ symbols go in the data section...
653 $chkcat[$i] = 'data';
656 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(alt|dflt)${T_POST_LBL}$/o ) {
658 $chkcat[$i] = 'misc';
660 } elsif ( /^${T_US}([A-Za-z0-9_]+)_vtbl${T_POST_LBL}$/o ) {
662 $chkcat[$i] = 'vector';
667 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
668 && /^[A-Za-z0-9][A-Za-z0-9_]*:/ ) {
669 # Some Solaris system headers contain function definitions (as
670 # opposed to mere prototypes), which end up in the .hc file when
671 # a Haskell module foreign imports the corresponding system
672 # functions (most notably stat()). We put them into the text
673 # segment. Note that this currently does not extend to function
674 # names starting with an underscore.
677 $chkcat[$i] = 'misc';
680 } elsif ( /^${T_US}[A-Za-z0-9_]/o
681 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
683 && ( $TargetPlatform !~ /^powerpc64/ # we need to avoid local labels in this case
684 || ! /^\.L\d+:$/ ) ) {
691 /^${T_US}stg_.*${T_POST_LBL}$/o # RTS internals
692 || /^${T_US}__stg_.*${T_POST_LBL}$/o # more RTS internals
693 || /^${T_US}__fexp_.*${T_POST_LBL}$/o # foreign export
694 || /^${T_US}.*_slow${T_POST_LBL}$/o # slow entry
695 || /^${T_US}__stginit.*${T_POST_LBL}$/o # __stginit<module>
696 || /^${T_US}.*_btm${T_POST_LBL}$/o # large bitmaps
697 || /^${T_US}.*_fast${T_POST_LBL}$/o # primops
698 || /^_uname:/o # x86/Solaris2
701 $chkcat[$i] = 'misc';
703 /^${T_US}.*_srtd${T_POST_LBL}$/o # large bitmaps
704 || /^${T_US}.*_closure_tbl${T_POST_LBL}$/o # closure tables
707 $chkcat[$i] = 'relrodata';
710 print STDERR "Warning: retaining unknown function \`$thing' in output from C compiler\n";
711 $chkcat[$i] = 'unknown';
714 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && /^\.data/ && $chkcat[$i] eq 'dyld')
715 { # non_lazy_symbol_ptrs that point to local symbols
717 $chkcat[$i] = 'dyld';
719 } elsif ( $TargetPlatform =~ /^powerpc-.*-linux/ && /^\.LCTOC1 = /o ) {
720 # PowerPC Linux's large-model PIC (-fPIC) generates a gobal offset
721 # table "by hand". Be sure to copy it over.
722 # Note that this label and all entries in the table should actually
723 # go into the .got2 section, but it isn't easy to distinguish them
724 # from other constant literals (.LC\d+), so we just put everything
727 $chkcat[$i] = 'literal';
728 $chksymb[$i] = 'LCTOC1';
729 } else { # simple line (duplicated at the top)
734 $numchks = $#chk + 1;
736 # open CHUNKS, ">/tmp/chunks1" or die "Cannot open /tmp/chunks1: $!\n";
737 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
740 # the division into chunks is imperfect;
741 # we throw some things over the fence into the next
744 # also, there are things we would like to know
745 # about the whole module before we start spitting
748 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
749 local($FIRST_TOSSABLE ) = ($TargetPlatform =~ /^(hppa|mips-)/) ? 1 : 0;
751 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
753 # Alphas: NB: we start meddling at chunk 1, not chunk 0
754 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
755 # spits a ".quad 0" in after the very first ".rdata"; we
756 # detect this special case (tossing the ".quad 0")!
757 local($magic_rdata_seen) = 0;
759 # HPPAs, MIPSen: also start medding at chunk 1
761 for ($i = $FIRST_TOSSABLE; $i < $numchks; $i++) {
762 $c = $chk[$i]; # convenience copy
764 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
766 # toss all prologue stuff; HPPA is pretty weird
768 $c = &hppa_mash_prologue($c) if $TargetPlatform =~ /^hppa-/;
770 # be slightly paranoid to make sure there's
771 # nothing surprising in there
772 if ( $c =~ /--- BEGIN ---/ ) {
773 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
775 # remove junk whitespace around the split point
779 if ($TargetPlatform =~ /^i386-/) {
780 $p =~ s/^\tpushl\s+\%edi\n//;
781 $p =~ s/^\tpushl\s+\%esi\n//;
782 $p =~ s/^\tpushl\s+\%ebx\n//;
783 $p =~ s/^\tmovl\s+\%esi,\s*\d*\(\%esp\)\n//;
784 $p =~ s/^\tmovl\s+\%edi,\s*\d*\(\%esp\)\n//;
785 $p =~ s/^\tsubl\s+\$\d+,\s*\%esp\n//;
786 $p =~ s/^\tmovl\s+\$\d+,\s*\%eax\n\tcall\s+__alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
788 # GCC 3.1 is in the habit of adding spurious writes to the
789 # stack in the prologue. Just to be on the safe side,
790 # chuck these over the fence into the main code.
791 while ($p =~ /^\tmovl\s+\$\d+,\s*\d*\(\%esp\)\n/) {
792 # print "Spurious instruction: $&";
797 } elsif ($TargetPlatform =~ /^x86_64-/) {
798 $p =~ s/^\tpushq\s+\%r(bx|bp|12|13|14)\n//g;
799 $p =~ s/^\tmovq\s+\%r(bx|bp|12|13|14),\s*\d*\(\%rsp\)\n//g;
800 $p =~ s/^\tsubq\s+\$\d+,\s*\%rsp\n//;
802 } elsif ($TargetPlatform =~ /^ia64-/) {
803 $p =~ s/^\t\.prologue .*\n//;
804 $p =~ s/^\t\.save ar\.pfs, r\d+\n\talloc r\d+ = ar\.pfs, 0, 3[12], \d+, 0\n//;
805 $p =~ s/^\t\.fframe \d+\n\tadds r12 = -\d+, r12\n//;
806 $p =~ s/^\t\.save rp, r\d+\n\tmov r\d+ = b0\n//;
807 $p =~ s/^\t\.(mii|mmi)\n//g; # bundling is no longer sensible
808 $p =~ s/^\t;;\n//g; # discard stops
809 $p =~ s/^\t\/\/.*\n//g; # gcc inserts timings in // comments
811 # GCC 3.3 saves r1 in the prologue, move this to the body
812 if ($p =~ /^\tmov r\d+ = r1\n/) {
816 } elsif ($TargetPlatform =~ /^m68k-/) {
817 $p =~ s/^\tlink a6,#-?\d.*\n//;
818 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
819 # The above showed up in the asm code,
820 # so I added it here.
821 # I hope it's correct.
823 $p =~ s/^\tmovel d2,sp\@-\n//;
824 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
825 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
826 } elsif ($TargetPlatform =~ /^mips-/) {
827 # the .frame/.mask/.fmask that we use is the same
828 # as that produced by GCC for miniInterpret; this
829 # gives GDB some chance of figuring out what happened
830 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
831 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
832 $p =~ s/^\t\.(mask|fmask).*\n//g;
833 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
834 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
835 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
836 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
837 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
838 $p =~ s/__FRAME__/$FRAME/;
839 } elsif ($TargetPlatform =~ /^powerpc-apple-.*/) {
841 $pcrel_label =~ s/(.|\n)*^(\"?L\d+\$pb\"?):\n(.|\n)*/$2/ or $pcrel_label = "";
843 $p =~ s/^\tmflr r0\n//;
844 $p =~ s/^\tbl saveFP # f\d+\n//;
845 $p =~ s/^\tbl saveFP ; save f\d+-f\d+\n//;
846 $p =~ s/^\"?L\d+\$pb\"?:\n//;
847 $p =~ s/^\tstmw r\d+,-\d+\(r1\)\n//;
848 $p =~ s/^\tstfd f\d+,-\d+\(r1\)\n//g;
849 $p =~ s/^\tstw r0,\d+\(r1\)\n//g;
850 $p =~ s/^\tstwu r1,-\d+\(r1\)\n//;
851 $p =~ s/^\tstw r\d+,-\d+\(r1\)\n//g;
852 $p =~ s/^\tbcl 20,31,L\d+\$pb\n//;
853 $p =~ s/^L\d+\$pb:\n//;
854 $p =~ s/^\tmflr r31\n//;
856 # This is bad: GCC 3 seems to zero-fill some local variables in the prologue
857 # under some circumstances, only when generating position dependent code.
858 # I have no idea why, and I don't think it is necessary, so let's toss it.
859 $p =~ s/^\tli r\d+,0\n//g;
860 $p =~ s/^\tstw r\d+,\d+\(r1\)\n//g;
861 } elsif ($TargetPlatform =~ /^powerpc-.*-linux/) {
862 $p =~ s/^\tmflr 0\n//;
863 $p =~ s/^\tstmw \d+,\d+\(1\)\n//;
864 $p =~ s/^\tstfd \d+,\d+\(1\)\n//g;
865 $p =~ s/^\tstw r0,8\(1\)\n//;
866 $p =~ s/^\tstwu 1,-\d+\(1\)\n//;
867 $p =~ s/^\tstw \d+,\d+\(1\)\n//g;
869 # GCC's "large-model" PIC (-fPIC)
871 $pcrel_label =~ s/(.|\n)*^.LCF(\d+):\n(.|\n)*/$2/ or $pcrel_label = "";
873 $p =~ s/^\tbcl 20,31,.LCF\d+\n//;
874 $p =~ s/^.LCF\d+:\n//;
875 $p =~ s/^\tmflr 30\n//;
876 $p =~ s/^\tlwz 0,\.LCL\d+-\.LCF\d+\(30\)\n//;
877 $p =~ s/^\tadd 30,0,30\n//;
879 # This is bad: GCC 3 seems to zero-fill some local variables in the prologue
880 # under some circumstances, only when generating position dependent code.
881 # I have no idea why, and I don't think it is necessary, so let's toss it.
882 $p =~ s/^\tli \d+,0\n//g;
883 $p =~ s/^\tstw \d+,\d+\(1\)\n//g;
884 } elsif ($TargetPlatform =~ /^powerpc64-.*-linux/) {
885 $p =~ s/^\tmr 31,1\n//;
886 $p =~ s/^\tmflr 0\n//;
887 $p =~ s/^\tstmw \d+,\d+\(1\)\n//;
888 $p =~ s/^\tstfd \d+,-?\d+\(1\)\n//g;
889 $p =~ s/^\tstd r0,8\(1\)\n//;
890 $p =~ s/^\tstdu 1,-\d+\(1\)\n//;
891 $p =~ s/^\tstd \d+,-?\d+\(1\)\n//g;
893 # GCC's "large-model" PIC (-fPIC)
895 $pcrel_label =~ s/(.|\n)*^.LCF(\d+):\n(.|\n)*/$2/ or $pcrel_label = "";
897 $p =~ s/^\tbcl 20,31,.LCF\d+\n//;
898 $p =~ s/^.LCF\d+:\n//;
899 $p =~ s/^\tmflr 30\n//;
900 $p =~ s/^\tlwz 0,\.LCL\d+-\.LCF\d+\(30\)\n//;
901 $p =~ s/^\tadd 30,0,30\n//;
903 # This is bad: GCC 3 seems to zero-fill some local variables in the prologue
904 # under some circumstances, only when generating position dependent code.
905 # I have no idea why, and I don't think it is necessary, so let's toss it.
906 $p =~ s/^\tli \d+,0\n//g;
907 $p =~ s/^\tstd \d+,\d+\(1\)\n//g;
909 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
912 # HWL HACK: dont die, just print a warning
913 #print stderr "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
914 die "Prologue junk?: $p\n" if $p =~ /^\s+[^\s\.]/;
916 # For PIC, we want to keep part of the prologue
917 if ($TargetPlatform =~ /^powerpc-apple-.*/ && $pcrel_label ne "") {
918 # Darwin: load the current instruction pointer into register r31
919 $p .= "bcl 20,31,$pcrel_label\n";
920 $p .= "$pcrel_label:\n";
921 $p .= "\tmflr r31\n";
922 } elsif ($TargetPlatform =~ /^powerpc-.*-linux/ && $pcrel_label ne "") {
923 # Linux: load the GOT pointer into register 30
924 $p .= "\tbcl 20,31,.LCF$pcrel_label\n";
925 $p .= ".LCF$pcrel_label:\n";
927 $p .= "\tlwz 0,.LCL$pcrel_label-.LCF$pcrel_label(30)\n";
928 $p .= "\tadd 30,0,30\n";
931 # glue together what's left
936 if ( $TargetPlatform =~ /^mips-/ ) {
937 # MIPS: first, this basic sequence may occur "--- END ---" or not
938 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
941 # toss all epilogue stuff; again, paranoidly
942 if ( $c =~ /--- END ---/ ) {
943 if (($r, $e) = split(/--- END ---/, $c)) {
944 if ($TargetPlatform =~ /^i386-/) {
946 $e =~ s/^\tpopl\s+\%edi\n//;
947 $e =~ s/^\tpopl\s+\%esi\n//;
948 $e =~ s/^\tpopl\s+\%edx\n//;
949 $e =~ s/^\tpopl\s+\%ecx\n//;
950 $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//;
951 $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//;
952 } elsif ($TargetPlatform =~ /^ia64-/) {
953 $e =~ s/^\tmov ar\.pfs = r\d+\n//;
954 $e =~ s/^\tmov b0 = r\d+\n//;
955 $e =~ s/^\t\.restore sp\n\tadds r12 = \d+, r12\n//;
956 $e =~ s/^\tbr\.ret\.sptk\.many b0\n//;
957 $e =~ s/^\t\.(mii|mmi|mib)\n//g; # bundling is no longer sensible
958 $e =~ s/^\t;;\n//g; # discard stops - stop at end of body is sufficient
959 $e =~ s/^\t\/\/.*\n//g; # gcc inserts timings in // comments
960 } elsif ($TargetPlatform =~ /^m68k-/) {
961 $e =~ s/^\tunlk a6\n//;
963 } elsif ($TargetPlatform =~ /^mips-/) {
964 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
965 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
966 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
967 $e =~ s/^\tj\t\$31\n//;
968 } elsif ($TargetPlatform =~ /^powerpc-apple-.*/) {
969 $e =~ s/^\taddi r1,r1,\d+\n//;
970 $e =~ s/^\tlwz r\d+,\d+\(r1\)\n//;
971 $e =~ s/^\tlmw r\d+,-\d+\(r1\)\n//;
972 $e =~ s/^\tmtlr r0\n//;
974 $e =~ s/^\tb restFP ;.*\n//;
975 } elsif ($TargetPlatform =~ /^powerpc64-.*-linux/) {
976 $e =~ s/^\tmr 3,0\n//;
977 $e =~ s/^\taddi 1,1,\d+\n//;
978 $e =~ s/^\tld 0,16\(1\)\n//;
979 $e =~ s/^\tmtlr 0\n//;
981 # callee-save registers
982 $e =~ s/^\tld \d+,-?\d+\(1\)\n//g;
983 $e =~ s/^\tlfd \d+,-?\d+\(1\)\n//g;
985 # get rid of the debug junk along with the blr
986 $e =~ s/^\tblr\n\t.long .*\n\t.byte .*\n//;
988 # incase we missed it with the last one get the blr alone
991 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
994 print STDERR "WARNING: Epilogue junk?: $e\n" if $e =~ /^\t\s*[^\.\s\n]/;
996 # glue together what's left
998 $c =~ s/\n\t\n/\n/; # junk blank line
1002 # On SPARCs, we don't do --- BEGIN/END ---, we just
1003 # toss the register-windowing save/restore/ret* instructions
1004 # directly unless they've been generated by function definitions in header
1006 if ( $TargetPlatform =~ /^sparc-/ ) {
1007 if ( ! ( $TargetPlatform =~ /solaris2$/ && $chkcat[$i] eq 'unknown' )) {
1008 $c =~ s/^\t(save.*|restore.*|ret|retl)\n//g;
1010 # throw away PROLOGUE comments
1011 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
1014 # On Alphas, the prologue mangling is done a little later (below)
1016 # toss all calls to __DISCARD__
1017 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
1018 $c =~ s/^\tjsr\s+\$26\s*,\s*${T_US}__DISCARD__\n//go if $TargetPlatform =~ /^alpha-/;
1019 $c =~ s/^\tbl\s+L___DISCARD__\$stub\n//go if $TargetPlatform =~ /^powerpc-apple-.*/;
1020 $c =~ s/^\tbl\s+__DISCARD__(\@plt)?\n//go if $TargetPlatform =~ /^powerpc-.*-linux/;
1021 $c =~ s/^\tbl\s+\.__DISCARD__\n\s+nop\n//go if $TargetPlatform =~ /^powerpc64-.*-linux/;
1023 # IA64: mangle tailcalls into jumps here
1024 if ($TargetPlatform =~ /^ia64-/) {
1025 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/) {
1026 # Eek, the gcc optimiser is getting smarter... if we see a jump to the --- TAILCALL ---
1027 # marker then we reapply the substitution at the source sites
1028 $c =~ s/^\tbr \.L$2\n/\t--- TAILCALL ---\n/g if ($2);
1032 # MIPS: that may leave some gratuitous asm macros around
1033 # (no harm done; but we get rid of them to be tidier)
1034 $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/
1035 if $TargetPlatform =~ /^mips-/;
1037 # toss stack adjustment after DoSparks
1038 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
1039 if $TargetPlatform =~ /^m68k-/; # this looks old...
1041 if ( $TargetPlatform =~ /^alpha-/ &&
1042 ! $magic_rdata_seen &&
1043 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
1044 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
1045 $magic_rdata_seen = 1;
1048 # pick some end-things and move them to the next chunk
1050 # pin a funny end-thing on (for easier matching):
1051 $c .= 'FUNNY#END#THING';
1053 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
1057 # on x86 we try not to copy any directives into a literal
1058 # chunk, rather we keep looking for the next real chunk. This
1059 # is because we get things like
1061 # .globl blah_closure
1067 if ( $TargetPlatform =~ /^(i386|sparc|powerpc)/ && $to_move =~ /${T_COPY_DIRVS}/ ) {
1069 while ( $j < $numchks && $chk[$j] =~ /$T_CONST_LBL/) {
1072 if ( $j < $numchks ) {
1073 $chk[$j] = $to_move . $chk[$j];
1077 elsif ( $i < ($numchks - 1)
1078 && ( $to_move =~ /${T_COPY_DIRVS}/
1079 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
1080 $chk[$i + 1] = $to_move . $chk[$i + 1];
1081 # otherwise they're tossed
1084 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
1087 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
1089 # toss all prologue stuff, except for loading gp, and the ..ng address
1090 unless ($c =~ /\.ent.*\n\$.*\.\.ng:/) {
1091 if (($p, $r) = split(/^\t\.prologue/, $c)) {
1092 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
1093 $keep =~ s/^\t\.frame.*\n/\t.frame \$30,0,\$26,0\n/;
1094 $keep =~ s/^\t\.(mask|fmask).*\n//g;
1095 $c = $keep . "..ng:\n";
1097 print STDERR "malformed code block ($ent)?\n"
1100 $c .= "\t.prologue" . $r;
1104 $c =~ s/FUNNY#END#THING//;
1106 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
1108 $chk[$i] = $c; # update w/ convenience copy
1111 # open CHUNKS, ">/tmp/chunks2" or die "Cannot open /tmp/chunks2: $!\n";
1112 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
1115 if ( $TargetPlatform =~ /^alpha-/ ) {
1116 # print out the header stuff first
1117 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
1118 print OUTASM $chk[0];
1120 } elsif ( $TargetPlatform =~ /^hppa/ ) {
1121 print OUTASM $chk[0];
1123 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1124 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
1126 # get rid of horrible "<dollar>Revision: .*$" strings
1127 local(@lines0) = split(/\n/, $chk[0]);
1129 while ( $z <= $#lines0 ) {
1130 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
1133 while ( $z <= $#lines0 ) {
1135 last if $lines0[$z] =~ /[,\t]0x0$/;
1141 $chk[0] = join("\n", @lines0);
1142 $chk[0] =~ s/\n\n+/\n/;
1143 print OUTASM $chk[0];
1146 # print out all the literal strings next
1147 for ($i = 0; $i < $numchks; $i++) {
1148 if ( $chkcat[$i] eq 'literal' ) {
1150 # HACK: try to detect 16-byte constants and align them
1151 # on a 16-byte boundary. x86_64 sometimes needs 128-bit
1152 # aligned constants.
1153 if ( $TargetPlatform =~ /^x86_64/ ) {
1155 if ($z =~ /(\.long.*\n.*\.long.*\n.*\.long.*\n.*\.long|\.quad.*\n.*\.quad)/) {
1156 print OUTASM $T_HDR_literal16;
1158 print OUTASM $T_HDR_literal;
1161 print OUTASM $T_HDR_literal;
1164 print OUTASM $chk[$i];
1165 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
1167 $chkcat[$i] = 'DONE ALREADY';
1171 # on the HPPA, print out all the bss next
1172 if ( $TargetPlatform =~ /^hppa/ ) {
1173 for ($i = 1; $i < $numchks; $i++) {
1174 if ( $chkcat[$i] eq 'bss' ) {
1175 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
1176 print OUTASM $chk[$i];
1178 $chkcat[$i] = 'DONE ALREADY';
1183 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
1184 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
1186 next if $chkcat[$i] eq 'DONE ALREADY';
1188 if ( $chkcat[$i] eq 'misc' || $chkcat[$i] eq 'unknown' ) {
1189 if ($chk[$i] ne '') {
1190 print OUTASM $T_HDR_misc;
1191 &print_doctored($chk[$i], 0);
1194 } elsif ( $chkcat[$i] eq 'toss' ) {
1195 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
1197 } elsif ( $chkcat[$i] eq 'data' ) {
1198 if ($chk[$i] ne '') {
1199 print OUTASM $T_HDR_data;
1200 print OUTASM $chk[$i];
1203 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
1204 # we can just re-constitute this one...
1205 # NB: we emit _three_ underscores no matter what,
1206 # so ghc-split doesn't have to care.
1207 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
1209 } elsif ( $chkcat[$i] eq 'closure'
1210 || $chkcat[$i] eq 'srt'
1211 || $chkcat[$i] eq 'infotbl'
1212 || $chkcat[$i] eq 'entry') { # do them in that order
1213 $symb = $chksymb[$i];
1216 if ( defined($closurechk{$symb}) ) {
1217 print OUTASM $T_HDR_closure;
1218 print OUTASM $chk[$closurechk{$symb}];
1219 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
1223 if ( defined($srtchk{$symb}) ) {
1224 print OUTASM $T_HDR_relrodata;
1225 print OUTASM $chk[$srtchk{$symb}];
1226 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
1230 if ( defined($infochk{$symb}) ) {
1232 print OUTASM $T_HDR_info;
1233 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
1235 # entry code will be put here!
1237 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
1241 if ( defined($entrychk{$symb}) ) {
1243 $c = $chk[$entrychk{$symb}];
1245 # If this is an entry point with an info table,
1246 # eliminate the entry symbol and all directives involving it.
1247 if (defined($infochk{$symb}) && $TargetPlatform !~ /^ia64-/) {
1249 foreach $l (split(/\n/,$c)) {
1250 next if $l =~ /^.*$symb_(entry|ret)${T_POST_LBL}/;
1252 # If we have .type/.size direrctives involving foo_entry,
1253 # then make them refer to foo_info instead. The information
1254 # in these directives is used by the cachegrind annotator,
1255 # so it is worthwhile keeping.
1256 if ($l =~ /^\s*\.(type|size).*$symb_(entry|ret)/) {
1257 $l =~ s/$symb(_entry|_ret)/${symb}_info/g;
1261 next if $l =~ /^\s*\..*$symb.*\n?/;
1264 $c = join("\n",@o) . "\n";
1267 print OUTASM $T_HDR_entry;
1269 &print_doctored($c, 1); # NB: the 1!!!
1271 $chkcat[$entrychk{$symb}] = 'DONE ALREADY';
1274 } elsif ( $chkcat[$i] eq 'vector' ) {
1275 $symb = $chksymb[$i];
1278 if ( defined($vectorchk{$symb}) ) {
1279 print OUTASM $T_HDR_vector;
1280 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1282 # direct return code will be put here!
1283 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1285 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1286 # Alphas: the commented nop is for the splitter, to ensure
1287 # that no module ends with a label as the very last
1288 # thing. (The linker will adjust the label to point
1289 # to the first code word of the next module linked in,
1290 # even if alignment constraints cause the label to move!)
1292 print OUTASM "\t# nop\n";
1295 } elsif ( $chkcat[$i] eq 'rodata' ) {
1296 print OUTASM $T_HDR_rodata;
1297 print OUTASM $chk[$i];
1298 $chkcat[$i] = 'DONE ALREADY';
1299 } elsif ( $chkcat[$i] eq 'relrodata' ) {
1300 print OUTASM $T_HDR_relrodata;
1301 print OUTASM $chk[$i];
1302 $chkcat[$i] = 'DONE ALREADY';
1303 } elsif ( $chkcat[$i] eq 'toc' ) {
1304 # silly optimisation to print tocs, since they come in groups...
1305 print OUTASM $T_HDR_toc;
1307 while ($chkcat[$j] eq 'toc')
1308 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1311 print OUTASM $chk[$j];
1313 $chkcat[$j] = 'DONE ALREADY';
1317 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && $chkcat[$i] eq 'dyld' ) {
1318 # powerpc-apple: dynamic linker stubs
1319 if($chk[$i] !~ /\.indirect_symbol ___DISCARD__/)
1320 { # print them out unchanged, but remove the stubs for __DISCARD__
1321 print OUTASM $chk[$i];
1324 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1328 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1331 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1332 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1337 sub hppa_mash_prologue { # OK, epilogue, too
1340 # toss all prologue stuff
1341 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1343 # Lie about our .CALLINFO
1344 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1351 # toss all epilogue stuff
1352 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1354 # Sorry; we moved the _info stuff to the code segment.
1355 s/_info,DATA/_info,CODE/g;
1362 sub print_doctored {
1363 local($_, $need_fallthru_patch) = @_;
1365 if ( $TargetPlatform !~ /^i386-/
1366 || ! /^\t[a-z]/ # no instructions in here, apparently
1367 || /^${T_US}__stginit_[A-Za-z0-9_]+${T_POST_LBL}/) {
1371 # OK, must do some x86 **HACKING**
1373 local($entry_patch) = '';
1374 local($exit_patch) = '';
1376 # gotta watch out for weird instructions that
1377 # invisibly smash various regs:
1378 # rep* %ecx used for counting
1379 # scas* %edi used for destination index
1380 # cmps* %e[sd]i used for indices
1381 # loop* %ecx used for counting
1386 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1388 # * GCC used an "STG reg" for its own purposes
1390 # * some secret uses of machine reg, requiring STG reg
1391 # to be saved/restored
1393 # The most dangerous "GCC uses" of an "STG reg" are when
1394 # the reg holds the target of a jmp -- it's tricky to
1395 # insert the patch-up code before we get to the target!
1396 # So here we change the jmps:
1398 # --------------------------------------------------------
1399 # it can happen that we have jumps of the form...
1400 # jmp *<something involving %esp>
1402 # jmp <something involving another naughty register...>
1404 # a reasonably-common case is:
1406 # movl $_blah,<bad-reg>
1409 s/^\tmovl\s+\$${T_US}(.*),\s*(\%e[acd]x)\n\tjmp\s+\*\2/\tjmp $T_US$1/g;
1413 # movl -4(%ebx), %eax
1418 s/^\tmovl\s+(-?\d*\(\%e(bx|si)\)),\s*(\%e[acd]x)\n\tjmp\s+\*\3/\tjmp\t\*$1/g;
1420 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1421 s/^\tmovl\s+(.*),\s*\%esi\n\tjmp\s+\*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1422 s/^\tjmp\s+\*(.*\(.*\%esi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1423 s/^\tjmp\s+\*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1424 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1425 if /(jmp|call)\s+.*\%esi/;
1427 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1428 s/^\tmovl\s+(.*),\s*\%edi\n\tjmp\s+\*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1429 s/^\tjmp\s+\*(.*\(.*\%edi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1430 s/^\tjmp\s+\*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1431 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1432 if /(jmp|call)\s+.*\%edi/;
1435 # OK, now we can decide what our patch-up code is going to
1438 # Offsets into register table - you'd better update these magic
1439 # numbers should you change its contents!
1440 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1441 local($OFFSET_Hp)=88;
1443 # Note funky ".=" stuff; we're *adding* to these _patch guys
1444 if ( $StolenX86Regs <= 2
1445 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1446 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1447 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1449 # nothing for call_{entry,exit} because %esi is callee-save
1451 if ( $StolenX86Regs <= 3
1452 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1453 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1454 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1456 # nothing for call_{entry,exit} because %edi is callee-save
1459 # --------------------------------------------------------
1460 # next, here we go with non-%esp patching!
1462 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1464 # Before calling GC we must set up the exit condition before the call
1465 # and entry condition when we come back
1467 # fix _all_ non-local jumps:
1469 s/^\tjmp\s+\*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1470 s/^\tjmp\s+${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1472 s/^(\tjmp\s+.*\n)/$exit_patch$1/g; # here's the fix...
1474 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1475 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1477 if ($StolenX86Regs == 2 ) {
1478 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1479 if /^\t(jmp|call)\s+.*\%e(si|di)/;
1480 } elsif ($StolenX86Regs == 3 ) {
1481 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1482 if /^\t(jmp|call)\s+.*\%edi/;
1485 # --------------------------------------------------------
1486 # that's it -- print it
1488 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1492 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1493 print OUTASM $exit_patch;
1494 # ToDo: make it not print if there is a "jmp" at the end
1500 sub init_FUNNY_THINGS {
1501 %KNOWN_FUNNY_THING = (
1503 # "${T_US}stg_.*{T_POST_LBL}", 1,
1508 The following table reversal is used for both info tables and return
1509 vectors. In both cases, we remove the first entry from the table,
1510 reverse the table, put the label at the end, and paste some code
1511 (that which is normally referred to by the first entry in the table)
1512 right after the table itself. (The code pasting is done elsewhere.)
1516 local($symb, $tbl, $discard1) = @_;
1518 return ($tbl) if ($TargetPlatform =~ /^ia64-/);
1520 local($before) = '';
1522 local(@imports) = (); # hppa only
1525 local(@lines) = split(/\n/, $tbl);
1528 # Deal with the header...
1529 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1530 $label .= $lines[$i] . "\n",
1531 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1532 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1533 || $lines[$i] =~ /^${T_US}\S+_vtbl${T_POST_LBL}$/o;
1535 $before .= $lines[$i] . "\n"; # otherwise...
1539 $infoname =~ s/(.|\n)*^([A-Za-z0-9_]+_info)${T_POST_LBL}$(.|\n)*/\2/;
1541 # Grab the table data...
1542 if ( $TargetPlatform !~ /^hppa/ ) {
1543 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1545 # Convert addresses of SRTs, slow entrypoints and large bitmaps
1546 # to offsets (relative to the info label),
1547 # in order to support position independent code.
1548 $line =~ s/$infoname/0/
1549 || $line =~ s/([A-Za-z0-9_]+_srtd)$/\1 - $infoname/
1550 || $line =~ s/([A-Za-z0-9_]+_srt(\+\d+)?)$/\1 - $infoname/
1551 || $line =~ s/([A-Za-z0-9_]+_slow)$/\1 - $infoname/
1552 || $line =~ s/([A-Za-z0-9_]+_btm)$/\1 - $infoname/
1553 || $line =~ s/([A-Za-z0-9_]+_alt)$/\1 - $infoname/
1554 || $line =~ s/([A-Za-z0-9_]+_dflt)$/\1 - $infoname/
1555 || $line =~ s/([A-Za-z0-9_]+_ret)$/\1 - $infoname/;
1556 push(@words, $line);
1558 } else { # hppa weirdness
1559 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+(${T_DOT_WORD}|\.IMPORT)/; $i++) {
1560 # FIXME: the RTS now expects offsets instead of addresses
1561 # for all labels in info tables.
1562 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1563 push(@imports, $lines[$i]);
1565 # We don't use HP's ``function pointers''
1566 # We just use labels in code space, like normal people
1567 $lines[$i] =~ s/P%//;
1568 push(@words, $lines[$i]);
1573 # Now throw away any initial zero word from the table. This is a hack
1574 # that lets us reduce the size of info tables when the SRT field is not
1575 # needed: see comments StgFunInfoTable in InfoTables.h.
1577 # The .zero business is for Linux/ELF.
1578 # The .skip business is for Sparc/Solaris/ELF.
1579 # The .blockz business is for HPPA.
1581 # if ($words[0] =~ /^\t?(${T_DOT_WORD}\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) {
1586 for (; $i <= $#lines; $i++) {
1587 $after .= $lines[$i] . "\n";
1590 # Alphas: If we have anonymous text (not part of a procedure), the
1591 # linker may complain about missing exception information. Bleh.
1592 # To suppress this, we place a .ent/.end pair around the code.
1593 # At the same time, we have to be careful and not enclose any leading
1594 # .file/.loc directives.
1595 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1596 local ($ident) = $1;
1597 $before =~ s/^((\s*\.(file|loc)\s+[^\n]*\n)*)/$1\t.ent $ident\n/;
1598 $after .= "\t.end $ident\n";
1601 # Alphas: The heroic Simon Marlow found a bug in the Digital UNIX
1602 # assembler (!) wherein .quad constants inside .text sections are
1603 # first narrowed to 32 bits then sign-extended back to 64 bits.
1604 # This obviously screws up our 64-bit bitmaps, so we work around
1605 # the bug by replacing .quad with .align 3 + .long + .long [ccshan]
1606 if ( $TargetPlatform =~ /^alpha-/ ) {
1608 if (/^\s*\.quad\s+([-+0-9].*\S)\s*$/ && length $1 >= 10) {
1609 local ($number) = $1;
1610 if ($number =~ /^([-+])?(0x?)?([0-9]+)$/) {
1611 local ($sign, $base, $digits) = ($1, $2, $3);
1612 $base = (10, 8, 16)[length $base];
1613 local ($hi, $lo) = (0, 0);
1614 foreach $i (split(//, $digits)) {
1615 $j = $lo * $base + $i;
1616 $lo = $j % 4294967296;
1617 $hi = $hi * $base + ($j - $lo) / 4294967296;
1619 ($hi, $lo) = (4294967295 - $hi, 4294967296 - $lo)
1621 $_ = "\t.align 3\n\t.long $lo\n\t.long $hi\n";
1622 # printf STDERR "TURNING %s into 0x %08x %08x\n", $number, $hi, $lo;
1624 print STDERR "Cannot handle \".quad $number\" in info table\n";
1632 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1633 . join("\n", @words) . "\n"
1636 # print STDERR "before=$before\n";
1637 # print STDERR "label=$label\n";
1638 # print STDERR "words=",(reverse @words),"\n";
1639 # print STDERR "after=$after\n";
1645 The HP is a major nuisance. The threaded code mangler moved info
1646 tables from data space to code space, but unthreaded code in the RTS
1647 still has references to info tables in data space. Since the HP
1648 linker is very precise about where symbols live, we need to patch the
1649 references in the unthreaded RTS as well.
1652 sub mini_mangle_asm_hppa {
1653 local($in_asmf, $out_asmf) = @_;
1655 open(INASM, "< $in_asmf")
1656 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1657 open(OUTASM,"> $out_asmf")
1658 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1661 s/_info,DATA/_info,CODE/; # Move _info references to code space
1667 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1668 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1674 sub tidy_up_and_die {
1675 local($return_val, $msg) = @_;
1677 exit (($return_val == 0) ? 0 : 1);