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+\d+(,0x90)?|\.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+\d+(,\s*0x90)?|\.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';
226 $T_HDR_literal = "\.section\t\.rodata\n";
227 $T_HDR_misc = "\.text\n\t\.align 8\n";
228 $T_HDR_data = "\.data\n\t\.align 8\n";
229 $T_HDR_rodata = "\.section\t\.rodata\n\t\.align 8\n";
230 $T_HDR_closure = "\.data\n\t\.align 8\n";
231 $T_HDR_info = "\.text\n\t\.align 8\n";
232 $T_HDR_entry = "\.text\n\t\.align 8\n";
233 $T_HDR_vector = "\.text\n\t\.align 8\n";
235 #--------------------------------------------------------#
236 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
238 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
239 $T_US = '_'; # _ if symbols have an underscore on the front
240 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
241 $T_CONST_LBL = '^LC(\d+):$';
244 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
245 $T_COPY_DIRVS = '\.(globl|proc|stab)';
247 $T_DOT_WORD = '\.long';
248 $T_DOT_GLOBAL = '\.globl';
249 $T_HDR_literal = "\.text\n\t\.even\n";
250 $T_HDR_misc = "\.text\n\t\.even\n";
251 $T_HDR_data = "\.data\n\t\.even\n";
252 $T_HDR_rodata = "\.text\n\t\.even\n";
253 $T_HDR_closure = "\.data\n\t\.even\n";
254 $T_HDR_info = "\.text\n\t\.even\n";
255 $T_HDR_entry = "\.text\n\t\.even\n";
256 $T_HDR_vector = "\.text\n\t\.even\n";
258 #--------------------------------------------------------#
259 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
261 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
262 $T_US = ''; # _ if symbols have an underscore on the front
263 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
264 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
267 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
268 $T_COPY_DIRVS = '\.(globl|ent)';
270 $T_DOT_WORD = '\.word';
271 $T_DOT_GLOBAL = '^\t\.globl';
272 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
273 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
274 $T_HDR_data = "\t\.data\n\t\.align 2\n";
275 $T_HDR_rodata = "\t\.rdata\n\t\.align 2\n";
276 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
277 $T_HDR_info = "\t\.text\n\t\.align 2\n";
278 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
279 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
281 #--------------------------------------------------------#
282 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ ) {
283 # Apple PowerPC Darwin/MacOS X.
284 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
285 $T_US = '_'; # _ if symbols have an underscore on the front
286 $T_PRE_APP = 'DOESNT APPLY'; # regexp that says what comes before APP/NO_APP
287 $T_CONST_LBL = '^\LC\d+:'; # regexp for what such a lbl looks like
290 $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)';
291 $T_COPY_DIRVS = '\.(globl|lcomm)';
293 $T_DOT_WORD = '\.(long|short|byte|fill|space)';
294 $T_DOT_GLOBAL = '\.globl';
295 $T_HDR_toc = "\.toc\n";
296 $T_HDR_literal = "\t\.const_data\n\t\.align 2\n";
297 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
298 $T_HDR_data = "\t\.data\n\t\.align 2\n";
299 $T_HDR_rodata = "\t\.const_data\n\t\.align 2\n";
300 $T_HDR_closure = "\t\.const_data\n\t\.align 2\n";
301 $T_HDR_info = "\t\.text\n\t\.align 2\n";
302 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
303 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
305 #--------------------------------------------------------#
306 } elsif ( $TargetPlatform =~ /^powerpc-.*-linux/ ) {
308 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
309 $T_US = ''; # _ if symbols have an underscore on the front
310 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
311 $T_CONST_LBL = '^\.LC\d+:'; # regexp for what such a lbl looks like
314 $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)';
315 $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)';
317 $T_DOT_WORD = '\.(long|short|byte|fill|space)';
318 $T_DOT_GLOBAL = '\.globl';
319 $T_HDR_toc = "\.toc\n";
320 $T_HDR_literal = "\t\.section\t.rodata\n\t\.align 2\n";
321 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
322 $T_HDR_data = "\t\.data\n\t\.align 2\n";
323 $T_HDR_rodata = "\t\.section\t.rodata\n\t\.align 2\n";
324 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
325 $T_HDR_info = "\t\.text\n\t\.align 2\n";
326 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
327 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
329 #--------------------------------------------------------#
330 } elsif ( $TargetPlatform =~ /^powerpc64-.*-linux/ ) {
332 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
333 $T_US = '\.'; # _ if symbols have an underscore on the front
334 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
335 $T_CONST_LBL = '^\.LC\d+:'; # regexp for what such a lbl looks like
338 $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)';
339 $T_COPY_DIRVS = '^\s*\.(globl|type|size|local)';
341 $T_DOT_WORD = '\.(long|short|byte|fill|space)';
342 $T_DOT_GLOBAL = '\.globl';
343 $T_HDR_toc = "\.toc\n";
344 $T_HDR_literal = "\t\.section\t\".toc\",\"aw\"\n";
345 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
346 $T_HDR_data = "\t\.data\n\t\.align 2\n";
347 $T_HDR_rodata = "\t\.section\t.rodata\n\t\.align 2\n";
348 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
349 $T_HDR_info = "\t\.text\n\t\.align 2\n";
350 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
351 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
353 #--------------------------------------------------------#
354 } elsif ( $TargetPlatform =~ /^sparc-.*-(solaris2|openbsd)/ ) {
356 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
357 $T_US = ''; # _ if symbols have an underscore on the front
358 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
359 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
362 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
363 $T_COPY_DIRVS = '\.(global|proc|stab)';
365 $T_DOT_WORD = '\.(long|word|byte|half|skip|uahalf|uaword)';
366 $T_DOT_GLOBAL = '^\t\.global';
367 $T_HDR_literal = "\.text\n\t\.align 8\n";
368 $T_HDR_misc = "\.text\n\t\.align 4\n";
369 $T_HDR_data = "\.data\n\t\.align 8\n";
370 $T_HDR_rodata = "\.text\n\t\.align 4\n";
371 $T_HDR_closure = "\.data\n\t\.align 4\n";
372 $T_HDR_info = "\.text\n\t\.align 4\n";
373 $T_HDR_entry = "\.text\n\t\.align 4\n";
374 $T_HDR_vector = "\.text\n\t\.align 4\n";
376 #--------------------------------------------------------#
377 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
379 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
380 $T_US = '_'; # _ if symbols have an underscore on the front
381 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
382 $T_CONST_LBL = '^LC(\d+):$';
385 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
386 $T_COPY_DIRVS = '\.(global|proc|stab)';
388 $T_DOT_WORD = '\.word';
389 $T_DOT_GLOBAL = '^\t\.global';
390 $T_HDR_literal = "\.text\n\t\.align 8\n";
391 $T_HDR_misc = "\.text\n\t\.align 4\n";
392 $T_HDR_data = "\.data\n\t\.align 8\n";
393 $T_HDR_rodata = "\.text\n\t\.align 4\n";
394 $T_HDR_closure = "\.data\n\t\.align 4\n";
395 $T_HDR_info = "\.text\n\t\.align 4\n";
396 $T_HDR_entry = "\.text\n\t\.align 4\n";
397 $T_HDR_vector = "\.text\n\t\.align 4\n";
399 #--------------------------------------------------------#
400 } elsif ( $TargetPlatform =~ /^sparc-.*-linux/ ) {
401 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
402 $T_US = ''; # _ if symbols have an underscore on the front
403 $T_PRE_APP = '#'; # regexp that says what comes before APP/NO_APP
404 # Probably doesn't apply anyway
405 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
408 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.seg|\.stab.*|\t?\.section.*|\s+\.type.*|\s+\.size.*)\n)';
409 $T_COPY_DIRVS = '\.(global|globl|proc|stab)';
411 $T_DOT_WORD = '\.(long|word|nword|xword|byte|half|short|skip|uahalf|uaword)';
412 $T_DOT_GLOBAL = '^\t\.global';
413 $T_HDR_literal = "\.text\n\t\.align 8\n";
414 $T_HDR_misc = "\.text\n\t\.align 4\n";
415 $T_HDR_data = "\.data\n\t\.align 8\n";
416 $T_HDR_rodata = "\.text\n\t\.align 4\n";
417 $T_HDR_closure = "\.data\n\t\.align 4\n";
418 $T_HDR_info = "\.text\n\t\.align 4\n";
419 $T_HDR_entry = "\.text\n\t\.align 4\n";
420 $T_HDR_vector = "\.text\n\t\.align 4\n";
422 #--------------------------------------------------------#
424 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
429 print STDERR "T_STABBY: $T_STABBY\n";
430 print STDERR "T_US: $T_US\n";
431 print STDERR "T_PRE_APP: $T_PRE_APP\n";
432 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
433 print STDERR "T_POST_LBL: $T_POST_LBL\n";
434 if ( $TargetPlatform =~ /^i386-/ ) {
435 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
436 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
437 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
439 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
440 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
441 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
442 print STDERR "T_HDR_literal: $T_HDR_literal\n";
443 print STDERR "T_HDR_misc: $T_HDR_misc\n";
444 print STDERR "T_HDR_data: $T_HDR_data\n";
445 print STDERR "T_HDR_rodata: $T_HDR_rodata\n";
446 print STDERR "T_HDR_closure: $T_HDR_closure\n";
447 print STDERR "T_HDR_info: $T_HDR_info\n";
448 print STDERR "T_HDR_entry: $T_HDR_entry\n";
449 print STDERR "T_HDR_vector: $T_HDR_vector\n";
455 %************************************************************************
457 \subsection{Mangle away}
459 %************************************************************************
463 local($in_asmf, $out_asmf) = @_;
465 # multi-line regexp matching:
470 &init_TARGET_STUFF();
471 &init_FUNNY_THINGS();
473 open(INASM, "< $in_asmf")
474 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
475 open(OUTASM,"> $out_asmf")
476 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
478 # read whole file, divide into "chunks":
479 # record some info about what we've found...
481 @chk = (); # contents of the chunk
482 $numchks = 0; # number of them
483 @chkcat = (); # what category of thing in each chunk
484 @chksymb = (); # what symbol(base) is defined in this chunk
485 %entrychk = (); # ditto, its entry code
486 %closurechk = (); # ditto, the (static) closure
487 %srtchk = (); # ditto, its SRT (for top-level things)
488 %infochk = (); # given a symbol base, say what chunk its info tbl is in
489 %vectorchk = (); # ditto, return vector table
490 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
492 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
495 tr/\r//d if $TargetPlatform =~ /-mingw32$/; # In case Perl doesn't convert line endings
496 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
497 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
498 next if /^\t\.def.*endef$/;
499 next if /${T_PRE_APP}(NO_)?APP/o;
500 next if /^;/ && $TargetPlatform =~ /^hppa/;
502 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|ia64)-/;
504 if ( $TargetPlatform =~ /^mips-/
505 && /^\t\.(globl\S+\.text|comm\t)/ ) {
506 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
507 # Treat .comm variables as data. These show up in two (known) places:
509 # - the module_registered variable used in the __stginit fragment.
510 # even though these are declared static and initialised, gcc 3.3
511 # likes to make them .comm, presumably to save space in the
514 # - global variables used to pass arguments from C to STG in
515 # a foreign export. (is this still true? --SDM)
517 } elsif ( /^\t\.comm.*$/ ) {
519 $chkcat[$i] = 'data';
522 # Labels ending "_str": these are literal strings.
523 } elsif ( /^${T_US}([A-Za-z0-9_]+)_str${T_POST_LBL}$/ ) {
525 $chkcat[$i] = 'rodata';
528 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
529 # duplicated from the bottom
533 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
534 # Alphas: Local labels not to be confused with new chunks
537 # NB: all the rest start with a non-space
539 } elsif ( $TargetPlatform =~ /^mips-/
540 && /^\d+:/ ) { # a funny-looking very-local label
543 } elsif ( /$T_CONST_LBL/o ) {
545 $chkcat[$i] = 'literal';
548 } elsif ( /^${T_US}__stg_split_marker(\d*)${T_POST_LBL}$/o ) {
550 $chkcat[$i] = 'splitmarker';
553 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
556 $chkcat[$i] = 'infotbl';
557 $chksymb[$i] = $symb;
559 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
561 $infochk{$symb} = $i;
563 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(entry|ret)${T_POST_LBL}$/o ) {
565 $chkcat[$i] = 'entry';
570 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
572 $chkcat[$i] = 'closure';
575 $closurechk{$1} = $i;
577 } elsif ( /^${T_US}([A-Za-z0-9_]+)_srt${T_POST_LBL}$/o ) {
584 } elsif ( /^${T_US}([A-Za-z0-9_]+)_ct${T_POST_LBL}$/o ) {
586 $chkcat[$i] = 'data';
589 } elsif ( /^${T_US}(stg_ap_stack_entries|stg_stack_save_entries|stg_arg_bitmaps)${T_POST_LBL}$/o ) {
591 $chkcat[$i] = 'data';
594 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
597 } elsif ( /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
598 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
599 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
600 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
603 $chkcat[$i] = 'data';
606 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
611 } elsif ( /^${T_US}([A-Za-z0-9_]+)_cc(s)?${T_POST_LBL}$/o ) {
612 # all CC_ symbols go in the data section...
614 $chkcat[$i] = 'data';
617 } elsif ( /^${T_US}([A-Za-z0-9_]+)_(alt|dflt)${T_POST_LBL}$/o ) {
619 $chkcat[$i] = 'misc';
621 } elsif ( /^${T_US}([A-Za-z0-9_]+)_vtbl${T_POST_LBL}$/o ) {
623 $chkcat[$i] = 'vector';
628 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
629 && /^[A-Za-z0-9][A-Za-z0-9_]*:/ ) {
630 # Some Solaris system headers contain function definitions (as
631 # opposed to mere prototypes), which end up in the .hc file when
632 # a Haskell module foreign imports the corresponding system
633 # functions (most notably stat()). We put them into the text
634 # segment. Note that this currently does not extend to function
635 # names starting with an underscore.
638 $chkcat[$i] = 'misc';
641 } elsif ( /^${T_US}[A-Za-z0-9_]/o
642 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
644 && ( $TargetPlatform !~ /^powerpc64/ # we need to avoid local labels in this case
645 || ! /^\.L\d+:$/ ) ) {
652 /^${T_US}stg_.*${T_POST_LBL}$/o # RTS internals
653 || /^${T_US}__stg_.*${T_POST_LBL}$/o # more RTS internals
654 || /^${T_US}__fexp_.*${T_POST_LBL}$/o # foreign export
655 || /^${T_US}.*_slow${T_POST_LBL}$/o # slow entry
656 || /^${T_US}__stginit.*${T_POST_LBL}$/o # __stginit<module>
657 || /^${T_US}.*_btm${T_POST_LBL}$/o # large bitmaps
658 || /^${T_US}.*_fast${T_POST_LBL}$/o # primops
659 || /^_uname:/o # x86/Solaris2
662 $chkcat[$i] = 'misc';
664 /^${T_US}.*_srtd${T_POST_LBL}$/o # large bitmaps
665 || /^${T_US}.*_closure_tbl${T_POST_LBL}$/o # closure tables
668 $chkcat[$i] = 'rodata';
671 print STDERR "Warning: retaining unknown function \`$thing' in output from C compiler\n";
672 $chkcat[$i] = 'unknown';
675 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && (
677 || /^\.section __TEXT,__picsymbol_stub1,.*/
678 || /^\.section __TEXT,__picsymbolstub1,.*/
680 || /^\.section __TEXT,__symbol_stub1,.*/
681 || /^\.section __TEXT,__symbolstub1,.*/
682 || /^\.lazy_symbol_pointer/
683 || /^\.non_lazy_symbol_pointer/ ))
686 $chkcat[$i] = 'dyld';
688 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && /^\.data/ && $chkcat[$i] eq 'dyld')
689 { # non_lazy_symbol_ptrs that point to local symbols
691 $chkcat[$i] = 'dyld';
693 } elsif ( $TargetPlatform =~ /^powerpc-.*-linux/ && /^\.LCTOC1 = /o ) {
694 # PowerPC Linux's large-model PIC (-fPIC) generates a gobal offset
695 # table "by hand". Be sure to copy it over.
696 # Note that this label and all entries in the table should actually
697 # go into the .got2 section, but it isn't easy to distinguish them
698 # from other constant literals (.LC\d+), so we just put everything
701 $chkcat[$i] = 'literal';
702 $chksymb[$i] = 'LCTOC1';
703 } else { # simple line (duplicated at the top)
708 $numchks = $#chk + 1;
710 # open CHUNKS, ">/tmp/chunks1" or die "Cannot open /tmp/chunks1: $!\n";
711 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
714 # the division into chunks is imperfect;
715 # we throw some things over the fence into the next
718 # also, there are things we would like to know
719 # about the whole module before we start spitting
722 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
723 local($FIRST_TOSSABLE ) = ($TargetPlatform =~ /^(hppa|mips-)/) ? 1 : 0;
725 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
727 # Alphas: NB: we start meddling at chunk 1, not chunk 0
728 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
729 # spits a ".quad 0" in after the very first ".rdata"; we
730 # detect this special case (tossing the ".quad 0")!
731 local($magic_rdata_seen) = 0;
733 # HPPAs, MIPSen: also start medding at chunk 1
735 for ($i = $FIRST_TOSSABLE; $i < $numchks; $i++) {
736 $c = $chk[$i]; # convenience copy
738 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
740 # toss all prologue stuff; HPPA is pretty weird
742 $c = &hppa_mash_prologue($c) if $TargetPlatform =~ /^hppa-/;
744 # be slightly paranoid to make sure there's
745 # nothing surprising in there
746 if ( $c =~ /--- BEGIN ---/ ) {
747 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
749 # remove junk whitespace around the split point
753 if ($TargetPlatform =~ /^i386-/) {
754 $p =~ s/^\tpushl\s+\%edi\n//;
755 $p =~ s/^\tpushl\s+\%esi\n//;
756 $p =~ s/^\tpushl\s+\%ebx\n//;
757 $p =~ s/^\tmovl\s+\%esi,\s*\d*\(\%esp\)\n//;
758 $p =~ s/^\tmovl\s+\%edi,\s*\d*\(\%esp\)\n//;
759 $p =~ s/^\tsubl\s+\$\d+,\s*\%esp\n//;
760 $p =~ s/^\tmovl\s+\$\d+,\s*\%eax\n\tcall\s+__alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
762 # GCC 3.1 is in the habit of adding spurious writes to the
763 # stack in the prologue. Just to be on the safe side,
764 # chuck these over the fence into the main code.
765 while ($p =~ /^\tmovl\s+\$\d+,\s*\d*\(\%esp\)\n/) {
766 # print "Spurious instruction: $&";
771 } elsif ($TargetPlatform =~ /^x86_64-/) {
772 $p =~ s/^\tpushq\s+\%r(bx|bp|12|13|14)\n//g;
773 $p =~ s/^\tmovq\s+\%r(bx|bp|12|13|14),\s*\d*\(\%rsp\)\n//g;
774 $p =~ s/^\tsubq\s+\$\d+,\s*\%rsp\n//;
776 } elsif ($TargetPlatform =~ /^ia64-/) {
777 $p =~ s/^\t\.prologue .*\n//;
778 $p =~ s/^\t\.save ar\.pfs, r\d+\n\talloc r\d+ = ar\.pfs, 0, 3[12], \d+, 0\n//;
779 $p =~ s/^\t\.fframe \d+\n\tadds r12 = -\d+, r12\n//;
780 $p =~ s/^\t\.save rp, r\d+\n\tmov r\d+ = b0\n//;
781 $p =~ s/^\t\.(mii|mmi)\n//g; # bundling is no longer sensible
782 $p =~ s/^\t;;\n//g; # discard stops
783 $p =~ s/^\t\/\/.*\n//g; # gcc inserts timings in // comments
785 # GCC 3.3 saves r1 in the prologue, move this to the body
786 if ($p =~ /^\tmov r\d+ = r1\n/) {
790 } elsif ($TargetPlatform =~ /^m68k-/) {
791 $p =~ s/^\tlink a6,#-?\d.*\n//;
792 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
793 # The above showed up in the asm code,
794 # so I added it here.
795 # I hope it's correct.
797 $p =~ s/^\tmovel d2,sp\@-\n//;
798 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
799 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
800 } elsif ($TargetPlatform =~ /^mips-/) {
801 # the .frame/.mask/.fmask that we use is the same
802 # as that produced by GCC for miniInterpret; this
803 # gives GDB some chance of figuring out what happened
804 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
805 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
806 $p =~ s/^\t\.(mask|fmask).*\n//g;
807 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
808 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
809 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
810 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
811 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
812 $p =~ s/__FRAME__/$FRAME/;
813 } elsif ($TargetPlatform =~ /^powerpc-apple-.*/) {
815 $pcrel_label =~ s/(.|\n)*^(\"?L\d+\$pb\"?):\n(.|\n)*/$2/ or $pcrel_label = "";
817 $p =~ s/^\tmflr r0\n//;
818 $p =~ s/^\tbl saveFP # f\d+\n//;
819 $p =~ s/^\tbl saveFP ; save f\d+-f\d+\n//;
820 $p =~ s/^\"?L\d+\$pb\"?:\n//;
821 $p =~ s/^\tstmw r\d+,-\d+\(r1\)\n//;
822 $p =~ s/^\tstfd f\d+,-\d+\(r1\)\n//g;
823 $p =~ s/^\tstw r0,\d+\(r1\)\n//g;
824 $p =~ s/^\tstwu r1,-\d+\(r1\)\n//;
825 $p =~ s/^\tstw r\d+,-\d+\(r1\)\n//g;
826 $p =~ s/^\tbcl 20,31,L\d+\$pb\n//;
827 $p =~ s/^L\d+\$pb:\n//;
828 $p =~ s/^\tmflr r31\n//;
830 # This is bad: GCC 3 seems to zero-fill some local variables in the prologue
831 # under some circumstances, only when generating position dependent code.
832 # I have no idea why, and I don't think it is necessary, so let's toss it.
833 $p =~ s/^\tli r\d+,0\n//g;
834 $p =~ s/^\tstw r\d+,\d+\(r1\)\n//g;
835 } elsif ($TargetPlatform =~ /^powerpc-.*-linux/) {
836 $p =~ s/^\tmflr 0\n//;
837 $p =~ s/^\tstmw \d+,\d+\(1\)\n//;
838 $p =~ s/^\tstfd \d+,\d+\(1\)\n//g;
839 $p =~ s/^\tstw r0,8\(1\)\n//;
840 $p =~ s/^\tstwu 1,-\d+\(1\)\n//;
841 $p =~ s/^\tstw \d+,\d+\(1\)\n//g;
843 # GCC's "large-model" PIC (-fPIC)
845 $pcrel_label =~ s/(.|\n)*^.LCF(\d+):\n(.|\n)*/$2/ or $pcrel_label = "";
847 $p =~ s/^\tbcl 20,31,.LCF\d+\n//;
848 $p =~ s/^.LCF\d+:\n//;
849 $p =~ s/^\tmflr 30\n//;
850 $p =~ s/^\tlwz 0,\.LCL\d+-\.LCF\d+\(30\)\n//;
851 $p =~ s/^\tadd 30,0,30\n//;
853 # This is bad: GCC 3 seems to zero-fill some local variables in the prologue
854 # under some circumstances, only when generating position dependent code.
855 # I have no idea why, and I don't think it is necessary, so let's toss it.
856 $p =~ s/^\tli \d+,0\n//g;
857 $p =~ s/^\tstw \d+,\d+\(1\)\n//g;
858 } elsif ($TargetPlatform =~ /^powerpc64-.*-linux/) {
859 $p =~ s/^\tmr 31,1\n//;
860 $p =~ s/^\tmflr 0\n//;
861 $p =~ s/^\tstmw \d+,\d+\(1\)\n//;
862 $p =~ s/^\tstfd \d+,-?\d+\(1\)\n//g;
863 $p =~ s/^\tstd r0,8\(1\)\n//;
864 $p =~ s/^\tstdu 1,-\d+\(1\)\n//;
865 $p =~ s/^\tstd \d+,-?\d+\(1\)\n//g;
867 # GCC's "large-model" PIC (-fPIC)
869 $pcrel_label =~ s/(.|\n)*^.LCF(\d+):\n(.|\n)*/$2/ or $pcrel_label = "";
871 $p =~ s/^\tbcl 20,31,.LCF\d+\n//;
872 $p =~ s/^.LCF\d+:\n//;
873 $p =~ s/^\tmflr 30\n//;
874 $p =~ s/^\tlwz 0,\.LCL\d+-\.LCF\d+\(30\)\n//;
875 $p =~ s/^\tadd 30,0,30\n//;
877 # This is bad: GCC 3 seems to zero-fill some local variables in the prologue
878 # under some circumstances, only when generating position dependent code.
879 # I have no idea why, and I don't think it is necessary, so let's toss it.
880 $p =~ s/^\tli \d+,0\n//g;
881 $p =~ s/^\tstd \d+,\d+\(1\)\n//g;
883 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
886 # HWL HACK: dont die, just print a warning
887 #print stderr "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
888 die "Prologue junk?: $p\n" if $p =~ /^\s+[^\s\.]/;
890 # For PIC, we want to keep part of the prologue
891 if ($TargetPlatform =~ /^powerpc-apple-.*/ && $pcrel_label ne "") {
892 # Darwin: load the current instruction pointer into register r31
893 $p .= "bcl 20,31,$pcrel_label\n";
894 $p .= "$pcrel_label:\n";
895 $p .= "\tmflr r31\n";
896 } elsif ($TargetPlatform =~ /^powerpc-.*-linux/ && $pcrel_label ne "") {
897 # Linux: load the GOT pointer into register 30
898 $p .= "\tbcl 20,31,.LCF$pcrel_label\n";
899 $p .= ".LCF$pcrel_label:\n";
901 $p .= "\tlwz 0,.LCL$pcrel_label-.LCF$pcrel_label(30)\n";
902 $p .= "\tadd 30,0,30\n";
905 # glue together what's left
910 if ( $TargetPlatform =~ /^mips-/ ) {
911 # MIPS: first, this basic sequence may occur "--- END ---" or not
912 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
915 # toss all epilogue stuff; again, paranoidly
916 if ( $c =~ /--- END ---/ ) {
917 if (($r, $e) = split(/--- END ---/, $c)) {
918 if ($TargetPlatform =~ /^i386-/) {
920 $e =~ s/^\tpopl\s+\%edi\n//;
921 $e =~ s/^\tpopl\s+\%esi\n//;
922 $e =~ s/^\tpopl\s+\%edx\n//;
923 $e =~ s/^\tpopl\s+\%ecx\n//;
924 $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//;
925 $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//;
926 } elsif ($TargetPlatform =~ /^ia64-/) {
927 $e =~ s/^\tmov ar\.pfs = r\d+\n//;
928 $e =~ s/^\tmov b0 = r\d+\n//;
929 $e =~ s/^\t\.restore sp\n\tadds r12 = \d+, r12\n//;
930 $e =~ s/^\tbr\.ret\.sptk\.many b0\n//;
931 $e =~ s/^\t\.(mii|mmi|mib)\n//g; # bundling is no longer sensible
932 $e =~ s/^\t;;\n//g; # discard stops - stop at end of body is sufficient
933 $e =~ s/^\t\/\/.*\n//g; # gcc inserts timings in // comments
934 } elsif ($TargetPlatform =~ /^m68k-/) {
935 $e =~ s/^\tunlk a6\n//;
937 } elsif ($TargetPlatform =~ /^mips-/) {
938 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
939 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
940 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
941 $e =~ s/^\tj\t\$31\n//;
942 } elsif ($TargetPlatform =~ /^powerpc-apple-.*/) {
943 $e =~ s/^\taddi r1,r1,\d+\n//;
944 $e =~ s/^\tlwz r\d+,\d+\(r1\)\n//;
945 $e =~ s/^\tlmw r\d+,-\d+\(r1\)\n//;
946 $e =~ s/^\tmtlr r0\n//;
948 $e =~ s/^\tb restFP ;.*\n//;
949 } elsif ($TargetPlatform =~ /^powerpc64-.*-linux/) {
950 $e =~ s/^\tmr 3,0\n//;
951 $e =~ s/^\taddi 1,1,\d+\n//;
952 $e =~ s/^\tld 0,16\(1\)\n//;
953 $e =~ s/^\tmtlr 0\n//;
955 # callee-save registers
956 $e =~ s/^\tld \d+,-?\d+\(1\)\n//g;
957 $e =~ s/^\tlfd \d+,-?\d+\(1\)\n//g;
959 # get rid of the debug junk along with the blr
960 $e =~ s/^\tblr\n\t.long .*\n\t.byte .*\n//;
962 # incase we missed it with the last one get the blr alone
965 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
968 print STDERR "WARNING: Epilogue junk?: $e\n" if $e =~ /^\t\s*[^\.\s\n]/;
970 # glue together what's left
972 $c =~ s/\n\t\n/\n/; # junk blank line
976 # On SPARCs, we don't do --- BEGIN/END ---, we just
977 # toss the register-windowing save/restore/ret* instructions
978 # directly unless they've been generated by function definitions in header
980 if ( $TargetPlatform =~ /^sparc-/ ) {
981 if ( ! ( $TargetPlatform =~ /solaris2$/ && $chkcat[$i] eq 'unknown' )) {
982 $c =~ s/^\t(save.*|restore.*|ret|retl)\n//g;
984 # throw away PROLOGUE comments
985 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
988 # On Alphas, the prologue mangling is done a little later (below)
990 # toss all calls to __DISCARD__
991 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
992 $c =~ s/^\tjsr\s+\$26\s*,\s*${T_US}__DISCARD__\n//go if $TargetPlatform =~ /^alpha-/;
993 $c =~ s/^\tbl\s+L___DISCARD__\$stub\n//go if $TargetPlatform =~ /^powerpc-apple-.*/;
994 $c =~ s/^\tbl\s+__DISCARD__(\@plt)?\n//go if $TargetPlatform =~ /^powerpc-.*-linux/;
995 $c =~ s/^\tbl\s+\.__DISCARD__\n\s+nop\n//go if $TargetPlatform =~ /^powerpc64-.*-linux/;
997 # IA64: mangle tailcalls into jumps here
998 if ($TargetPlatform =~ /^ia64-/) {
999 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/) {
1000 # Eek, the gcc optimiser is getting smarter... if we see a jump to the --- TAILCALL ---
1001 # marker then we reapply the substitution at the source sites
1002 $c =~ s/^\tbr \.L$2\n/\t--- TAILCALL ---\n/g if ($2);
1006 # MIPS: that may leave some gratuitous asm macros around
1007 # (no harm done; but we get rid of them to be tidier)
1008 $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/
1009 if $TargetPlatform =~ /^mips-/;
1011 # toss stack adjustment after DoSparks
1012 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
1013 if $TargetPlatform =~ /^m68k-/; # this looks old...
1015 if ( $TargetPlatform =~ /^alpha-/ &&
1016 ! $magic_rdata_seen &&
1017 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
1018 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
1019 $magic_rdata_seen = 1;
1022 # pick some end-things and move them to the next chunk
1024 # pin a funny end-thing on (for easier matching):
1025 $c .= 'FUNNY#END#THING';
1027 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
1031 # on x86 we try not to copy any directives into a literal
1032 # chunk, rather we keep looking for the next real chunk. This
1033 # is because we get things like
1035 # .globl blah_closure
1041 if ( $TargetPlatform =~ /^(i386|sparc|powerpc)/ && $to_move =~ /${T_COPY_DIRVS}/ ) {
1043 while ( $j < $numchks && $chk[$j] =~ /$T_CONST_LBL/) {
1046 if ( $j < $numchks ) {
1047 $chk[$j] = $to_move . $chk[$j];
1051 elsif ( $i < ($numchks - 1)
1052 && ( $to_move =~ /${T_COPY_DIRVS}/
1053 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
1054 $chk[$i + 1] = $to_move . $chk[$i + 1];
1055 # otherwise they're tossed
1058 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
1061 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
1063 # toss all prologue stuff, except for loading gp, and the ..ng address
1064 unless ($c =~ /\.ent.*\n\$.*\.\.ng:/) {
1065 if (($p, $r) = split(/^\t\.prologue/, $c)) {
1066 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
1067 $keep =~ s/^\t\.frame.*\n/\t.frame \$30,0,\$26,0\n/;
1068 $keep =~ s/^\t\.(mask|fmask).*\n//g;
1069 $c = $keep . "..ng:\n";
1071 print STDERR "malformed code block ($ent)?\n"
1074 $c .= "\t.prologue" . $r;
1078 $c =~ s/FUNNY#END#THING//;
1080 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
1082 $chk[$i] = $c; # update w/ convenience copy
1085 # open CHUNKS, ">/tmp/chunks2" or die "Cannot open /tmp/chunks2: $!\n";
1086 # for (my $i = 0; $i < @chk; ++$i) { print CHUNKS "======= $i =======\n", $chk[$i] }
1089 if ( $TargetPlatform =~ /^alpha-/ ) {
1090 # print out the header stuff first
1091 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
1092 print OUTASM $chk[0];
1094 } elsif ( $TargetPlatform =~ /^hppa/ ) {
1095 print OUTASM $chk[0];
1097 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1098 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
1100 # get rid of horrible "<dollar>Revision: .*$" strings
1101 local(@lines0) = split(/\n/, $chk[0]);
1103 while ( $z <= $#lines0 ) {
1104 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
1107 while ( $z <= $#lines0 ) {
1109 last if $lines0[$z] =~ /[,\t]0x0$/;
1115 $chk[0] = join("\n", @lines0);
1116 $chk[0] =~ s/\n\n+/\n/;
1117 print OUTASM $chk[0];
1120 # print out all the literal strings next
1121 for ($i = 0; $i < $numchks; $i++) {
1122 if ( $chkcat[$i] eq 'literal' ) {
1123 print OUTASM $T_HDR_literal, $chk[$i];
1124 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
1126 $chkcat[$i] = 'DONE ALREADY';
1130 # on the HPPA, print out all the bss next
1131 if ( $TargetPlatform =~ /^hppa/ ) {
1132 for ($i = 1; $i < $numchks; $i++) {
1133 if ( $chkcat[$i] eq 'bss' ) {
1134 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
1135 print OUTASM $chk[$i];
1137 $chkcat[$i] = 'DONE ALREADY';
1142 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
1143 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
1145 next if $chkcat[$i] eq 'DONE ALREADY';
1147 if ( $chkcat[$i] eq 'misc' || $chkcat[$i] eq 'unknown' ) {
1148 if ($chk[$i] ne '') {
1149 print OUTASM $T_HDR_misc;
1150 &print_doctored($chk[$i], 0);
1153 } elsif ( $chkcat[$i] eq 'toss' ) {
1154 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
1156 } elsif ( $chkcat[$i] eq 'data' ) {
1157 if ($chk[$i] ne '') {
1158 print OUTASM $T_HDR_data;
1159 print OUTASM $chk[$i];
1162 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
1163 # we can just re-constitute this one...
1164 # NB: we emit _three_ underscores no matter what,
1165 # so ghc-split doesn't have to care.
1166 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
1168 } elsif ( $chkcat[$i] eq 'closure'
1169 || $chkcat[$i] eq 'srt'
1170 || $chkcat[$i] eq 'infotbl'
1171 || $chkcat[$i] eq 'entry') { # do them in that order
1172 $symb = $chksymb[$i];
1175 if ( defined($closurechk{$symb}) ) {
1176 print OUTASM $T_HDR_closure;
1177 print OUTASM $chk[$closurechk{$symb}];
1178 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
1182 if ( defined($srtchk{$symb}) ) {
1183 print OUTASM $T_HDR_rodata;
1184 print OUTASM $chk[$srtchk{$symb}];
1185 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
1189 if ( defined($infochk{$symb}) ) {
1191 print OUTASM $T_HDR_info;
1192 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
1194 # entry code will be put here!
1196 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
1200 if ( defined($entrychk{$symb}) ) {
1202 $c = $chk[$entrychk{$symb}];
1204 # If this is an entry point with an info table,
1205 # eliminate the entry symbol and all directives involving it.
1206 if (defined($infochk{$symb}) && $TargetPlatform !~ /^ia64-/) {
1207 $c =~ s/^.*$symb_(entry|ret)${T_POST_LBL}\n//;
1208 $c =~ s/^\s*\..*$symb.*\n//g;
1211 print OUTASM $T_HDR_entry;
1213 &print_doctored($c, 1); # NB: the 1!!!
1215 $chkcat[$entrychk{$symb}] = 'DONE ALREADY';
1218 } elsif ( $chkcat[$i] eq 'vector' ) {
1219 $symb = $chksymb[$i];
1222 if ( defined($vectorchk{$symb}) ) {
1223 print OUTASM $T_HDR_vector;
1224 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1226 # direct return code will be put here!
1227 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1229 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1230 # Alphas: the commented nop is for the splitter, to ensure
1231 # that no module ends with a label as the very last
1232 # thing. (The linker will adjust the label to point
1233 # to the first code word of the next module linked in,
1234 # even if alignment constraints cause the label to move!)
1236 print OUTASM "\t# nop\n";
1239 } elsif ( $chkcat[$i] eq 'rodata' ) {
1240 print OUTASM $T_HDR_rodata;
1241 print OUTASM $chk[$i];
1242 $chkcat[$i] = 'DONE ALREADY';
1244 } elsif ( $chkcat[$i] eq 'toc' ) {
1245 # silly optimisation to print tocs, since they come in groups...
1246 print OUTASM $T_HDR_toc;
1248 while ($chkcat[$j] eq 'toc')
1249 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1252 print OUTASM $chk[$j];
1254 $chkcat[$j] = 'DONE ALREADY';
1258 } elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && $chkcat[$i] eq 'dyld' ) {
1259 # powerpc-apple: dynamic linker stubs
1260 if($chk[$i] !~ /\.indirect_symbol ___DISCARD__/)
1261 { # print them out unchanged, but remove the stubs for __DISCARD__
1262 print OUTASM $chk[$i];
1265 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1269 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1272 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1273 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1278 sub hppa_mash_prologue { # OK, epilogue, too
1281 # toss all prologue stuff
1282 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1284 # Lie about our .CALLINFO
1285 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1292 # toss all epilogue stuff
1293 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1295 # Sorry; we moved the _info stuff to the code segment.
1296 s/_info,DATA/_info,CODE/g;
1303 sub print_doctored {
1304 local($_, $need_fallthru_patch) = @_;
1306 if ( $TargetPlatform !~ /^i386-/
1307 || ! /^\t[a-z]/ # no instructions in here, apparently
1308 || /^${T_US}__stginit_[A-Za-z0-9_]+${T_POST_LBL}/) {
1312 # OK, must do some x86 **HACKING**
1314 local($entry_patch) = '';
1315 local($exit_patch) = '';
1317 # gotta watch out for weird instructions that
1318 # invisibly smash various regs:
1319 # rep* %ecx used for counting
1320 # scas* %edi used for destination index
1321 # cmps* %e[sd]i used for indices
1322 # loop* %ecx used for counting
1327 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1329 # * GCC used an "STG reg" for its own purposes
1331 # * some secret uses of machine reg, requiring STG reg
1332 # to be saved/restored
1334 # The most dangerous "GCC uses" of an "STG reg" are when
1335 # the reg holds the target of a jmp -- it's tricky to
1336 # insert the patch-up code before we get to the target!
1337 # So here we change the jmps:
1339 # --------------------------------------------------------
1340 # it can happen that we have jumps of the form...
1341 # jmp *<something involving %esp>
1343 # jmp <something involving another naughty register...>
1345 # a reasonably-common case is:
1347 # movl $_blah,<bad-reg>
1351 s/^\tmovl\s+\$${T_US}(.*),\s*(\%e[abcd]x)\n\tjmp\s+\*\2/\tjmp $T_US$1/g;
1353 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1354 s/^\tmovl\s+(.*),\s*\%esi\n\tjmp\s+\*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1355 s/^\tjmp\s+\*(.*\(.*\%esi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1356 s/^\tjmp\s+\*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1357 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1358 if /(jmp|call)\s+.*\%esi/;
1360 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1361 s/^\tmovl\s+(.*),\s*\%edi\n\tjmp\s+\*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1362 s/^\tjmp\s+\*(.*\(.*\%edi.*\))\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1363 s/^\tjmp\s+\*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1364 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1365 if /(jmp|call)\s+.*\%edi/;
1368 # OK, now we can decide what our patch-up code is going to
1371 # Offsets into register table - you'd better update these magic
1372 # numbers should you change its contents!
1373 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1374 local($OFFSET_Hp)=88;
1376 # Note funky ".=" stuff; we're *adding* to these _patch guys
1377 if ( $StolenX86Regs <= 2
1378 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1379 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1380 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1382 # nothing for call_{entry,exit} because %esi is callee-save
1384 if ( $StolenX86Regs <= 3
1385 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1386 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1387 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1389 # nothing for call_{entry,exit} because %edi is callee-save
1392 # --------------------------------------------------------
1393 # next, here we go with non-%esp patching!
1395 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1397 # Before calling GC we must set up the exit condition before the call
1398 # and entry condition when we come back
1400 # fix _all_ non-local jumps:
1402 s/^\tjmp\s+\*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1403 s/^\tjmp\s+${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1405 s/^(\tjmp\s+.*\n)/$exit_patch$1/g; # here's the fix...
1407 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1408 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1410 if ($StolenX86Regs == 2 ) {
1411 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1412 if /^\t(jmp|call)\s+.*\%e(si|di)/;
1413 } elsif ($StolenX86Regs == 3 ) {
1414 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1415 if /^\t(jmp|call)\s+.*\%edi/;
1418 # --------------------------------------------------------
1419 # that's it -- print it
1421 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1425 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1426 print OUTASM $exit_patch;
1427 # ToDo: make it not print if there is a "jmp" at the end
1433 sub init_FUNNY_THINGS {
1434 %KNOWN_FUNNY_THING = (
1436 # "${T_US}stg_.*{T_POST_LBL}", 1,
1441 The following table reversal is used for both info tables and return
1442 vectors. In both cases, we remove the first entry from the table,
1443 reverse the table, put the label at the end, and paste some code
1444 (that which is normally referred to by the first entry in the table)
1445 right after the table itself. (The code pasting is done elsewhere.)
1449 local($symb, $tbl, $discard1) = @_;
1451 return ($tbl) if ($TargetPlatform =~ /^ia64-/);
1453 local($before) = '';
1455 local(@imports) = (); # hppa only
1458 local(@lines) = split(/\n/, $tbl);
1461 # Deal with the header...
1462 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1463 $label .= $lines[$i] . "\n",
1464 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1465 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1466 || $lines[$i] =~ /^${T_US}\S+_vtbl${T_POST_LBL}$/o;
1468 $before .= $lines[$i] . "\n"; # otherwise...
1472 $infoname =~ s/(.|\n)*^([A-Za-z0-9_]+_info)${T_POST_LBL}$(.|\n)*/\2/;
1474 # Grab the table data...
1475 if ( $TargetPlatform !~ /^hppa/ ) {
1476 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?${T_DOT_WORD}\s+/o; $i++) {
1478 # Convert addresses of SRTs, slow entrypoints and large bitmaps
1479 # to offsets (relative to the info label),
1480 # in order to support position independent code.
1481 $line =~ s/$infoname/0/
1482 || $line =~ s/([A-Za-z0-9_]+_srtd)$/\1 - $infoname/
1483 || $line =~ s/([A-Za-z0-9_]+_srt(\+\d+)?)$/\1 - $infoname/
1484 || $line =~ s/([A-Za-z0-9_]+_slow)$/\1 - $infoname/
1485 || $line =~ s/([A-Za-z0-9_]+_btm)$/\1 - $infoname/
1486 || $line =~ s/([A-Za-z0-9_]+_alt)$/\1 - $infoname/
1487 || $line =~ s/([A-Za-z0-9_]+_dflt)$/\1 - $infoname/
1488 || $line =~ s/([A-Za-z0-9_]+_ret)$/\1 - $infoname/;
1489 push(@words, $line);
1491 } else { # hppa weirdness
1492 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+(${T_DOT_WORD}|\.IMPORT)/; $i++) {
1493 # FIXME: the RTS now expects offsets instead of addresses
1494 # for all labels in info tables.
1495 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1496 push(@imports, $lines[$i]);
1498 # We don't use HP's ``function pointers''
1499 # We just use labels in code space, like normal people
1500 $lines[$i] =~ s/P%//;
1501 push(@words, $lines[$i]);
1506 # Now throw away any initial zero word from the table. This is a hack
1507 # that lets us reduce the size of info tables when the SRT field is not
1508 # needed: see comments StgFunInfoTable in InfoTables.h.
1510 # The .zero business is for Linux/ELF.
1511 # The .skip business is for Sparc/Solaris/ELF.
1512 # The .blockz business is for HPPA.
1514 # if ($words[0] =~ /^\t?(${T_DOT_WORD}\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) {
1519 for (; $i <= $#lines; $i++) {
1520 $after .= $lines[$i] . "\n";
1523 # Alphas: If we have anonymous text (not part of a procedure), the
1524 # linker may complain about missing exception information. Bleh.
1525 # To suppress this, we place a .ent/.end pair around the code.
1526 # At the same time, we have to be careful and not enclose any leading
1527 # .file/.loc directives.
1528 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1529 local ($ident) = $1;
1530 $before =~ s/^((\s*\.(file|loc)\s+[^\n]*\n)*)/$1\t.ent $ident\n/;
1531 $after .= "\t.end $ident\n";
1534 # Alphas: The heroic Simon Marlow found a bug in the Digital UNIX
1535 # assembler (!) wherein .quad constants inside .text sections are
1536 # first narrowed to 32 bits then sign-extended back to 64 bits.
1537 # This obviously screws up our 64-bit bitmaps, so we work around
1538 # the bug by replacing .quad with .align 3 + .long + .long [ccshan]
1539 if ( $TargetPlatform =~ /^alpha-/ ) {
1541 if (/^\s*\.quad\s+([-+0-9].*\S)\s*$/ && length $1 >= 10) {
1542 local ($number) = $1;
1543 if ($number =~ /^([-+])?(0x?)?([0-9]+)$/) {
1544 local ($sign, $base, $digits) = ($1, $2, $3);
1545 $base = (10, 8, 16)[length $base];
1546 local ($hi, $lo) = (0, 0);
1547 foreach $i (split(//, $digits)) {
1548 $j = $lo * $base + $i;
1549 $lo = $j % 4294967296;
1550 $hi = $hi * $base + ($j - $lo) / 4294967296;
1552 ($hi, $lo) = (4294967295 - $hi, 4294967296 - $lo)
1554 $_ = "\t.align 3\n\t.long $lo\n\t.long $hi\n";
1555 # printf STDERR "TURNING %s into 0x %08x %08x\n", $number, $hi, $lo;
1557 print STDERR "Cannot handle \".quad $number\" in info table\n";
1565 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1566 . join("\n", @words) . "\n"
1569 # print STDERR "before=$before\n";
1570 # print STDERR "label=$label\n";
1571 # print STDERR "words=",(reverse @words),"\n";
1572 # print STDERR "after=$after\n";
1578 The HP is a major nuisance. The threaded code mangler moved info
1579 tables from data space to code space, but unthreaded code in the RTS
1580 still has references to info tables in data space. Since the HP
1581 linker is very precise about where symbols live, we need to patch the
1582 references in the unthreaded RTS as well.
1585 sub mini_mangle_asm_hppa {
1586 local($in_asmf, $out_asmf) = @_;
1588 open(INASM, "< $in_asmf")
1589 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1590 open(OUTASM,"> $out_asmf")
1591 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1594 s/_info,DATA/_info,CODE/; # Move _info references to code space
1600 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1601 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1607 sub tidy_up_and_die {
1608 local($return_val, $msg) = @_;
1610 exit (($return_val == 0) ? 0 : 1);