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.
19 The HP linker is very picky about symbols being in the appropriate
20 space (code vs. data). When we mangle the threaded code to put the
21 info tables just prior to the code, they wind up in code space
22 rather than data space. This means that references to *_info from
23 un-mangled parts of the RTS (e.g. unthreaded GC code) get
24 unresolved symbols. Solution: mini-mangler for .c files on HP. I
25 think this should really be triggered in the driver by a new -rts
26 option, so that user code doesn't get mangled inappropriately.
28 With reversed tables, jumps are to the _info label rather than to
29 the _entry label. The _info label is just an address in code
30 space, rather than an entry point with the descriptive blob we
31 talked about yesterday. As a result, you can't use the call-style
32 JMP_ macro. However, some JMP_ macros take _info labels as targets
33 and some take code entry points within the RTS. The latter won't
34 work with the goto-style JMP_ macro. Sigh. Solution: Use the goto
35 style JMP_ macro, and mangle some more assembly, changing all
36 "RP'literal" and "LP'literal" references to "R'literal" and
37 "L'literal," so that you get the real address of the code, rather
38 than the descriptive blob. Also change all ".word P%literal"
39 entries in info tables and vector tables to just ".word literal,"
40 for the same reason. Advantage: No more ridiculous call sequences.
43 %************************************************************************
45 \subsection{Constants for various architectures}
47 %************************************************************************
50 sub init_TARGET_STUFF {
52 #--------------------------------------------------------#
53 if ( $TargetPlatform =~ /^alpha-.*-.*/ ) {
55 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
56 $T_US = ''; # _ if symbols have an underscore on the front
57 $T_DO_GC = 'PerformGC_wrapper';
58 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
59 $T_CONST_LBL = '^\$C(\d+):$'; # regexp for what such a lbl looks like
62 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\#.*|\.(file|loc)\s+\S+\s+\S+|\.text|\.r?data)\n)';
63 $T_COPY_DIRVS = '^\s*(\#|\.(file|globl|ent|loc))';
65 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
66 $T_DOT_WORD = '\.quad';
67 $T_DOT_GLOBAL = '^\t\.globl';
68 $T_HDR_literal = "\.rdata\n\t\.align 3\n";
69 $T_HDR_misc = "\.text\n\t\.align 3\n";
70 $T_HDR_data = "\.data\n\t\.align 3\n";
71 $T_HDR_consist = "\.text\n";
72 $T_HDR_closure = "\.data\n\t\.align 3\n";
73 $T_HDR_info = "\.text\n\t\.align 3\n";
74 $T_HDR_entry = "\.text\n\t\.align 3\n";
75 $T_HDR_fast = "\.text\n\t\.align 3\n";
76 $T_HDR_vector = "\.text\n\t\.align 3\n";
77 $T_HDR_direct = "\.text\n\t\.align 3\n";
79 #--------------------------------------------------------#
80 } elsif ( $TargetPlatform =~ /^hppa/ ) {
82 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
83 $T_US = ''; # _ if symbols have an underscore on the front
84 $T_DO_GC = 'PerformGC_wrapper';
85 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
86 $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like
89 $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)';
90 $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)';
92 $T_hsc_cc_PAT = '\.STRING.*\)(hsc|cc) (.*)\\\\x09(.*)\\\\x00';
93 $T_DOT_WORD = '\.word';
94 $T_DOT_GLOBAL = '^\s+\.EXPORT';
95 $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
96 $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
97 $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
98 $T_HDR_consist = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
99 $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
100 $T_HDR_info = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
101 $T_HDR_entry = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
102 $T_HDR_fast = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
103 $T_HDR_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
104 $T_HDR_direct = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
106 #--------------------------------------------------------#
107 } elsif ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd|nextstep3|cygwin32)/ ) {
108 # NeXT added but not tested. CaS
110 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
111 $T_US = '_'; # _ if symbols have an underscore on the front
112 $T_DO_GC = '_PerformGC_wrapper';
113 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
114 $T_CONST_LBL = '^LC(\d+):$';
116 $T_X86_PRE_LLBL_PAT = 'L';
117 $T_X86_PRE_LLBL = 'L';
118 $T_X86_BADJMP = '^\tjmp [^L\*]';
120 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*)\n)';
121 $T_COPY_DIRVS = '\.(globl|stab)';
122 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
123 $T_DOT_WORD = '\.long';
124 $T_DOT_GLOBAL = '\.globl';
125 $T_HDR_literal = "\.text\n\t\.align 2\n";
126 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
127 $T_HDR_data = "\.data\n\t\.align 2\n";
128 $T_HDR_consist = "\.text\n";
129 $T_HDR_closure = "\.data\n\t\.align 2\n";
130 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
131 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
132 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
133 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
134 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
136 #--------------------------------------------------------#
137 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux)$/ ) {
139 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
140 $T_US = ''; # _ if symbols have an underscore on the front
141 $T_DO_GC = 'PerformGC_wrapper';
142 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
143 ($TargetPlatform =~ /-linux$/) ? '#' : '/' ;
144 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
146 $T_X86_PRE_LLBL_PAT = '\.L';
147 $T_X86_PRE_LLBL = '.L';
148 $T_X86_BADJMP = '^\tjmp [^\.\*]';
150 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.Lfe.*\n\t\.size\s+.*|\.size\s+.*|\.ident.*)\n)';
151 $T_COPY_DIRVS = '\.(globl)';
153 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
154 $T_DOT_WORD = '\.long';
155 $T_DOT_GLOBAL = '\.globl';
156 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
157 $T_HDR_misc = "\.text\n\t\.align 16\n";
158 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
159 $T_HDR_consist = "\.text\n";
160 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
161 $T_HDR_info = "\.text\n\t\.align 16\n"; # NB: requires padding
162 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
163 $T_HDR_fast = "\.text\n\t\.align 16\n";
164 $T_HDR_vector = "\.text\n\t\.align 16\n"; # NB: requires padding
165 $T_HDR_direct = "\.text\n\t\.align 16\n";
167 #--------------------------------------------------------#
168 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
170 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
171 $T_US = '_'; # _ if symbols have an underscore on the front
172 $T_DO_GC = '_PerformGC_wrapper';
173 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
174 $T_CONST_LBL = '^LC(\d+):$';
177 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
178 $T_COPY_DIRVS = '\.(globl|proc|stab)';
179 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
181 $T_DOT_WORD = '\.long';
182 $T_DOT_GLOBAL = '\.globl';
183 $T_HDR_literal = "\.text\n\t\.even\n";
184 $T_HDR_misc = "\.text\n\t\.even\n";
185 $T_HDR_data = "\.data\n\t\.even\n";
186 $T_HDR_consist = "\.text\n";
187 $T_HDR_closure = "\.data\n\t\.even\n";
188 $T_HDR_info = "\.text\n\t\.even\n";
189 $T_HDR_entry = "\.text\n\t\.even\n";
190 $T_HDR_fast = "\.text\n\t\.even\n";
191 $T_HDR_vector = "\.text\n\t\.even\n";
192 $T_HDR_direct = "\.text\n\t\.even\n";
194 #--------------------------------------------------------#
195 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
197 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
198 $T_US = ''; # _ if symbols have an underscore on the front
199 $T_DO_GC = 'PerformGC_wrapper';
200 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
201 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
204 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
205 $T_COPY_DIRVS = '\.(globl|ent)';
207 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
208 $T_DOT_WORD = '\.word';
209 $T_DOT_GLOBAL = '^\t\.globl';
210 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
211 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
212 $T_HDR_data = "\t\.data\n\t\.align 2\n";
213 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
214 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
215 $T_HDR_info = "\t\.text\n\t\.align 2\n";
216 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
217 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
218 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
219 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
221 #--------------------------------------------------------#
222 } elsif ( $TargetPlatform =~ /^powerpc-.*|^rs6000-.*/ ) {
224 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
225 $T_US = ''; # _ if symbols have an underscore on the front
226 $T_DO_GC = '\.PerformGC_wrapper';
227 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
228 $T_CONST_LBL = 'NOT APPLICABLE'; # regexp for what such a lbl looks like
231 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
232 $T_COPY_DIRVS = '\.(l?globl)';
234 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
235 $T_DOT_WORD = '\.long';
236 $T_DOT_GLOBAL = '\.globl';
237 $T_HDR_toc = "\.toc\n";
238 $T_HDR_literal = "\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
239 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
240 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
241 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
242 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
243 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
244 $T_HDR_entry = "# entry\n\.csect \.text[PR]\n\t\.align 2\n";
245 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
246 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
247 $T_HDR_direct = "# direct\n";
249 #--------------------------------------------------------#
250 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
252 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
253 $T_US = ''; # _ if symbols have an underscore on the front
254 $T_DO_GC = 'PerformGC_wrapper';
255 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
256 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
259 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
260 $T_COPY_DIRVS = '\.(global|proc|stab)';
262 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
263 $T_DOT_WORD = '\.word';
264 $T_DOT_GLOBAL = '^\t\.global';
265 $T_HDR_literal = "\.text\n\t\.align 8\n";
266 $T_HDR_misc = "\.text\n\t\.align 4\n";
267 $T_HDR_data = "\.data\n\t\.align 8\n";
268 $T_HDR_consist = "\.text\n";
269 $T_HDR_closure = "\.data\n\t\.align 4\n";
270 $T_HDR_info = "\.text\n\t\.align 4\n";
271 $T_HDR_entry = "\.text\n\t\.align 4\n";
272 $T_HDR_fast = "\.text\n\t\.align 4\n";
273 $T_HDR_vector = "\.text\n\t\.align 4\n";
274 $T_HDR_direct = "\.text\n\t\.align 4\n";
276 #--------------------------------------------------------#
277 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
279 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
280 $T_US = '_'; # _ if symbols have an underscore on the front
281 $T_DO_GC = '_PerformGC_wrapper';
282 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
283 $T_CONST_LBL = '^LC(\d+):$';
286 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
287 $T_COPY_DIRVS = '\.(global|proc|stab)';
288 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
290 $T_DOT_WORD = '\.word';
291 $T_DOT_GLOBAL = '^\t\.global';
292 $T_HDR_literal = "\.text\n\t\.align 8\n";
293 $T_HDR_misc = "\.text\n\t\.align 4\n";
294 $T_HDR_data = "\.data\n\t\.align 8\n";
295 $T_HDR_consist = "\.text\n";
296 $T_HDR_closure = "\.data\n\t\.align 4\n";
297 $T_HDR_info = "\.text\n\t\.align 4\n";
298 $T_HDR_entry = "\.text\n\t\.align 4\n";
299 $T_HDR_fast = "\.text\n\t\.align 4\n";
300 $T_HDR_vector = "\.text\n\t\.align 4\n";
301 $T_HDR_direct = "\.text\n\t\.align 4\n";
303 #--------------------------------------------------------#
305 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
310 print STDERR "T_STABBY: $T_STABBY\n";
311 print STDERR "T_US: $T_US\n";
312 print STDERR "T_DO_GC: $T_DO_GC\n";
313 print STDERR "T_PRE_APP: $T_PRE_APP\n";
314 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
315 print STDERR "T_POST_LBL: $T_POST_LBL\n";
316 if ( $TargetPlatform =~ /^i386-/ ) {
317 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
318 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
319 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
321 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
322 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
323 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
324 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
325 print STDERR "T_HDR_literal: $T_HDR_literal\n";
326 print STDERR "T_HDR_misc: $T_HDR_misc\n";
327 print STDERR "T_HDR_data: $T_HDR_data\n";
328 print STDERR "T_HDR_consist: $T_HDR_consist\n";
329 print STDERR "T_HDR_closure: $T_HDR_closure\n";
330 print STDERR "T_HDR_info: $T_HDR_info\n";
331 print STDERR "T_HDR_entry: $T_HDR_entry\n";
332 print STDERR "T_HDR_fast: $T_HDR_fast\n";
333 print STDERR "T_HDR_vector: $T_HDR_vector\n";
334 print STDERR "T_HDR_direct: $T_HDR_direct\n";
340 %************************************************************************
342 \subsection{Mangle away}
344 %************************************************************************
348 local($in_asmf, $out_asmf) = @_;
350 # multi-line regexp matching:
355 &init_TARGET_STUFF();
356 &init_FUNNY_THINGS();
358 # perl4 on alphas SEGVs when give ${foo} substitutions in patterns.
359 # To avoid them we declare some locals that allows to avoid using curlies.
360 local($TUS) = ${T_US};
361 local($TPOSTLBL) = ${T_POST_LBL};
362 local($TMOVEDIRVS) = ${T_MOVE_DIRVS};
363 local($TPREAPP) = ${T_PRE_APP};
364 local($TCOPYDIRVS) = ${T_COPY_DIRVS};
365 local($TDOTWORD) = ${T_DOT_WORD};
367 open(INASM, "< $in_asmf")
368 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
369 open(OUTASM,"> $out_asmf")
370 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
372 # read whole file, divide into "chunks":
373 # record some info about what we've found...
375 @chk = (); # contents of the chunk
376 $numchks = 0; # number of them
377 @chkcat = (); # what category of thing in each chunk
378 @chksymb = (); # what symbol(base) is defined in this chunk
379 %slowchk = (); # ditto, its regular "slow" entry code
380 %fastchk = (); # ditto, fast entry code
381 %closurechk = (); # ditto, the (static) closure
382 %infochk = (); # given a symbol base, say what chunk its info tbl is in
383 %vectorchk = (); # ditto, return vector table
384 %directchk = (); # ditto, direct return code
385 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
387 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
390 next if $T_STABBY && /^\.stab.*$TUS[@]?__stg_split_marker/o;
391 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
392 next if /$TPREAPP(NO_)?APP/o;
393 next if /^;/ && $TargetPlatform =~ /^hppa/;
395 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc|rs6000)-/;
397 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-|^rs6000-/;
399 if ( $TargetPlatform =~ /^mips-/
400 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
401 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
403 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
404 # duplicated from the bottom
408 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
409 # Alphas: Local labels not to be confused with new chunks
412 # NB: all the rest start with a non-space
414 } elsif ( $TargetPlatform =~ /^mips-/
415 && /^\d+:/ ) { # a funny-looking very-local label
418 } elsif ( /$T_CONST_LBL/o ) {
420 $chkcat[$i] = 'literal';
423 } elsif ( /^$TUS[@]?__stg_split_marker(\d+)$TPOSTLBL[@]?$/o ) {
425 $chkcat[$i] = 'splitmarker';
428 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_info$TPOSTLBL[@]?$/o ) {
431 $chkcat[$i] = 'infotbl';
432 $chksymb[$i] = $symb;
434 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
436 $infochk{$symb} = $i;
438 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_entry$TPOSTLBL[@]?$/o ) {
440 $chkcat[$i] = 'slow';
445 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_fast\d+$TPOSTLBL[@]?$/o ) {
447 $chkcat[$i] = 'fast';
452 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_closure$TPOSTLBL[@]?$/o ) {
454 $chkcat[$i] = 'closure';
457 $closurechk{$1} = $i;
459 } elsif ( /^$TUS[@]?ghc.*c_ID$TPOSTLBL/o ) {
461 $chkcat[$i] = 'consist';
463 } elsif ( /^($TUS[@]?__gnu_compiled_c|gcc2_compiled\.)$TPOSTLBL/o ) {
466 } elsif ( /^$TUS[@]?ErrorIO_call_count$TPOSTLBL[@]?$/o # HACK!!!!
467 || /^$TUS[A-Za-z0-9_]+\.\d+$TPOSTLBL[@]?$/o
468 || /^$TUS[@]?.*_CAT$TPOSTLBL[@]?$/o # PROF: _entryname_CAT
469 || /^$TUS[@]?CC_.*_struct$TPOSTLBL[@]?$/o # PROF: _CC_ccident_struct
470 || /^$TUS[@]?.*_done$TPOSTLBL[@]?$/o # PROF: _module_done
471 || /^$TUS[@]?_module_registered$TPOSTLBL[@]?$/o # PROF: _module_registered
474 $chkcat[$i] = 'data';
477 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
482 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^LC\.\.([0-9]+)/ ) {
487 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^CC_.*$/ ) {
488 # all CC_ symbols go in the data section...
490 $chkcat[$i] = 'data';
493 } elsif ( /^($TUS[@]?(ret_|djn_)[A-Za-z0-9_]+)/o ) {
495 $chkcat[$i] = 'misc';
498 $chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-|^rs6000-/) ; #rm andre
500 } elsif ( /^$TUS[@]?vtbl_([A-Za-z0-9_]+)$TPOSTLBL[@]?$/o ) {
502 $chkcat[$i] = 'vector';
507 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)DirectReturn$TPOSTLBL[@]?$/o ) {
509 $chkcat[$i] = 'direct';
514 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_upd$TPOSTLBL[@]?$/o ) {
516 $chkcat[$i] = 'misc';
517 print STDERR "_upd!!!!! I guess this code is dead!!!!\n";
518 # I guess this is never entered, since all _upds are
519 # either vtbl_'s or ret_'s, caught above. - andre
522 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
523 && /^(_uname|uname|stat|fstat):/ ) {
524 # for some utterly bizarre reason, this platform
525 # likes to drop little local C routines with these names
526 # into each and every .o file that #includes the
527 # relevant system .h file. Yuck. We just don't
528 # tolerate them in .hc files (which we are processing
529 # here). If you need to call one of these things from
530 # Haskell, make a call to your own C wrapper, then
531 # put that C wrapper (which calls one of these) in a
532 # plain .c file. WDP 95/12
534 $chkcat[$i] = 'toss';
537 } elsif ( /^$TUS[@]?[A-Za-z0-9_]/o
538 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
540 && ( $TargetPlatform !~ /^powerpc|^rs6000/ # ditto
541 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
544 print STDERR "Funny global thing?: $_"
545 unless $KNOWN_FUNNY_THING{$thing}
546 || /^$TUS[@]?_(PRIn|PRStart).*$TPOSTLBL[@]?$/o # pointer reversal GC routines
547 || /^$TUS[@]?CC_.*$TPOSTLBL$/o # PROF: _CC_ccident ([@]? is a silly hack (see above))
548 || /^$TUS[@]?_reg.*$TPOSTLBL$/o; # PROF: __reg<module>
550 $chkcat[$i] = 'misc';
551 if ($TargetPlatform =~ /^powerpc-|^rs6000-/)
552 { $chksymb[$i] = $thing; }
553 else { $chksymb[$i] = ''; };
555 } else { # simple line (duplicated at the top)
560 $numchks = $#chk + 1;
562 # the division into chunks is imperfect;
563 # we throw some things over the fence into the next
566 # also, there are things we would like to know
567 # about the whole module before we start spitting
570 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
572 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
574 # Alphas: NB: we start meddling at chunk 1, not chunk 0
575 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
576 # spits a ".quad 0" in after the v first ".rdata"; we
577 # detect this special case (tossing the ".quad 0")!
578 local($magic_rdata_seen) = 0;
580 # HPPAs, MIPSen: also start medding at chunk 1
582 if ($TargetPlatform =~ /^powerpc|^rs6000/) {
583 print OUTASM $T_HDR_toc; # yes, we have to put a .toc
584 # in the beginning of every file!
585 %tocequiv = (); # maps toc symbol number to toc symbol
586 %revtocequiv = (); # maps toc symbol to toc symbol number
587 for ($i = 1; $i < $numchks; $i++) {
588 $chk[$i] =~ s/\[RW\]//g;
589 $chk[$i] =~ s/\[DS\]//g;
590 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
592 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
593 #ToDo: instead of all these changes, just fix mangle_powerpc_tailjump and delete/ignore these tocs?
594 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
595 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
596 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
597 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
598 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(djn_\S+)/\t\.tc \1\[TC\],\.\2/;
599 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
600 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],ErrorIO_innards/\t\.tc \1\[TC\],\.ErrorIO_innards/;
601 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],startStgWorld/\t\.tc \1\[TC\],\.startStgWorld/;
602 $chk[$i] =~ s/\.tc UpdatePAP\[TC\],UpdatePAP/\.tc UpdatePAP\[TC\],\.UpdatePAP/;
603 $chk[$i] =~ s/\.tc _regMain\[TC\],_regMain/\.tc _regMain\[TC\],\._regMain/; #PROF
604 $chk[$i] =~ s/\.tc resumeThread\[TC\],resumeThread/\.tc resumeThread\[TC\],\.resumeThread/; #CONC
605 $chk[$i] =~ s/\.tc EnterNodeCode\[TC\],EnterNodeCode/\.tc EnterNodeCode\[TC\],\.EnterNodeCode/; #CONC
606 $chk[$i] =~ s/\.tc StackUnderflowEnterNode\[TC\],StackUnderflowEnterNode/\.tc StackUnderflowEnterNode\[TC\],\.StackUnderflowEnterNode/; #CONC
607 $chk[$i] =~ s/\.tc stopThreadDirectReturn\[TC\],stopThreadDirectReturn/\.tc stopThreadDirectReturn\[TC\],\.stopThreadDirectReturn/; #CONC
608 $chk[$i] =~ s/\.tc IndUpdRetDir\[TC\],IndUpdRetDir/\.tc IndUpdRetDir\[TC\],\.IndUpdRetDir/;
609 $chk[$i] =~ s/\t\.tc (_PRStart_\S+)\[TC\],_PRStart_\S+/\t\.tc \1\[TC\],\.\1/;
611 $tocnumber = $chksymb[$i];
613 $tocsymb =~ s/^LC\.\.\d+:\n//;
614 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
615 $tocequiv{$tocnumber} = $tocsymb;
617 } elsif ( $chkcat[$i] eq 'toc' && $chk[$i] =~ /\.byte/ ) {
618 $chkcat[$i] = 'literal';
623 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
624 $c = $chk[$i]; # convenience copy
626 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
628 # toss all prologue stuff; HPPA is pretty weird
630 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
632 # be slightly paranoid to make sure there's
633 # nothing surprising in there
634 if ( $c =~ /--- BEGIN ---/ ) {
635 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
637 if ($TargetPlatform =~ /^i386-/) {
638 $p =~ s/^\tpushl \%edi\n//;
639 $p =~ s/^\tpushl \%esi\n//;
640 $p =~ s/^\tsubl \$\d+,\%esp\n//;
641 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
642 } elsif ($TargetPlatform =~ /^m68k-/) {
643 $p =~ s/^\tlink a6,#-?\d.*\n//;
644 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
645 # The above showed up in the asm code,
646 # so I added it here.
647 # I hope it's correct.
649 $p =~ s/^\tmovel d2,sp\@-\n//;
650 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
651 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
652 } elsif ($TargetPlatform =~ /^mips-/) {
653 # the .frame/.mask/.fmask that we use is the same
654 # as that produced by GCC for miniInterpret; this
655 # gives GDB some chance of figuring out what happened
656 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
657 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
658 $p =~ s/^\t\.(mask|fmask).*\n//g;
659 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
660 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
661 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
662 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
663 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
664 $p =~ s/__FRAME__/$FRAME/;
665 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000/) {
666 $p =~ s/^\tmflr 0\n//;
667 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
668 $p =~ s/^\tstw? 0,\d+\(1\)\n//g;
669 $p =~ s/^\tstw? 1,\d+\(1\)\n//g; #mc
670 $p =~ s/^\tlw?z 0,0\(1\)\n//g; #mc
671 $p =~ s/^\tstw?u 1,-\d+\(1\)\n//;
672 $p =~ s/^\tstw? \d+,-\d+\(1\)\n//g;
673 $p =~ s/^\tstfd \d+,-\d+\(1\)\n//g;
675 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
678 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
679 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
681 # glue together what's left
683 $c =~ s/\n\t\n/\n/; # junk blank line
687 if ( $TargetPlatform =~ /^mips-/ ) {
688 # MIPS: first, this basic sequence may occur "--- END ---" or not
689 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
692 # toss all epilogue stuff; again, paranoidly
693 if ( $c =~ /--- END ---/ ) {
694 if (($r, $e) = split(/--- END ---/, $c)) {
695 if ($TargetPlatform =~ /^i386-/) {
697 $e =~ s/^\tpopl \%edi\n//;
698 $e =~ s/^\tpopl \%esi\n//;
699 $e =~ s/^\taddl \$\d+,\%esp\n//;
700 } elsif ($TargetPlatform =~ /^m68k-/) {
701 $e =~ s/^\tunlk a6\n//;
703 } elsif ($TargetPlatform =~ /^mips-/) {
704 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
705 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
706 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
707 $e =~ s/^\tj\t\$31\n//;
708 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
709 $e =~ s/^\taddi 1,1,\d+\n//;
710 $e =~ s/^\tcal 1,\d+\(1\)\n//;
711 $e =~ s/^\tlw?z? \d+,\d+\(1\)\n//;
712 $e =~ s/^\tmtlr 0\n//;
715 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
717 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
718 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
720 # glue together what's left
722 $c =~ s/\n\t\n/\n/; # junk blank line
726 # On SPARCs, we don't do --- BEGIN/END ---, we just
727 # toss the register-windowing save/restore/ret* instructions
729 if ( $TargetPlatform =~ /^sparc-/ ) {
730 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
731 # throw away PROLOGUE comments
732 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
735 # On Alphas, the prologue mangling is done a little later (below)
737 # toss all calls to __DISCARD__
738 $c =~ s/^\t(call|jbsr|jal)\s+$TUS[@]?__DISCARD__\n//go;
740 # MIPS: that may leave some gratuitous asm macros around
741 # (no harm done; but we get rid of them to be tidier)
742 $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/
743 if $TargetPlatform =~ /^mips-/;
745 # toss stack adjustment after DoSparks
746 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
747 if $TargetPlatform =~ /^m68k-/; # this looks old...
749 if ( $TargetPlatform =~ /^alpha-/ &&
750 ! $magic_rdata_seen &&
751 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
752 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
753 $magic_rdata_seen = 1;
756 # pick some end-things and move them to the next chunk
758 # pin a funny end-thing on (for easier matching):
759 $c .= 'FUNNY#END#THING';
761 while ( $c =~ /$TMOVEDIRVS[@]?FUNNY#END#THING/o ) { # [@]? is a silly hack to avoid having to use curlies for T_PRE_APP
762 # (this SEGVs perl4 on alphas, you see)
765 if ( $i < ($numchks - 1)
766 && ( $to_move =~ /$TCOPYDIRVS/
767 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
768 $chk[$i + 1] = $to_move . $chk[$i + 1];
769 # otherwise they're tossed
772 $c =~ s/$TMOVEDIRVS[@]?FUNNY#END#THING/FUNNY#END#THING/o; # [@]? is a hack (see above)
775 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
777 # toss all prologue stuff, except for loading gp, and the ..ng address
778 if (($p, $r) = split(/^\t\.prologue/, $c)) {
779 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
780 $c = $keep . "..ng:\n";
782 print STDERR "malformed code block ($ent)?\n"
785 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
788 $c =~ s/FUNNY#END#THING//;
790 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
792 $chk[$i] = $c; # update w/ convenience copy
795 if ( $TargetPlatform =~ /^alpha-/ ) {
796 # print out the header stuff first
797 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
798 print OUTASM $chk[0];
800 } elsif ( $TargetPlatform =~ /^hppa/ ) {
801 print OUTASM $chk[0];
803 } elsif ( $TargetPlatform =~ /^mips-/ ) {
804 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
806 # get rid of horrible "<dollar>Revision: .*$" strings
807 local(@lines0) = split(/\n/, $chk[0]);
809 while ( $z <= $#lines0 ) {
810 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
813 while ( $z <= $#lines0 ) {
815 last if $lines0[$z] =~ /[,\t]0x0$/;
821 $chk[0] = join("\n", @lines0);
822 $chk[0] =~ s/\n\n+/\n/;
823 print OUTASM $chk[0];
826 # print out all the literal strings next
827 for ($i = 0; $i < $numchks; $i++) {
828 if ( $chkcat[$i] eq 'literal' ) {
829 print OUTASM $T_HDR_literal, $chk[$i];
830 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
832 $chkcat[$i] = 'DONE ALREADY';
836 # on the HPPA, print out all the bss next
837 if ( $TargetPlatform =~ /^hppa/ ) {
838 for ($i = 1; $i < $numchks; $i++) {
839 if ( $chkcat[$i] eq 'bss' ) {
840 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
841 print OUTASM $chk[$i];
843 $chkcat[$i] = 'DONE ALREADY';
848 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
849 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
851 next if $chkcat[$i] eq 'DONE ALREADY';
853 if ( $chkcat[$i] eq 'misc' ) {
854 if ($chk[$i] ne '') {
855 print OUTASM $T_HDR_misc;
856 if ($TargetPlatform =~ /^powerpc-|^rs6000/) {
857 $chksymb[$i] =~ s/://;
858 #new if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
859 #new || $chksymb[$i] =~ /^$.{T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
860 #new { print OUTASM "\t\.globl $chksymb[$i]\n"; }
861 # if ($chksymb[$i] ne '' && $chksymb[$i] !~ /ret_[a-z]/ && $chksymb[$i] !~ /djn_[a-z]/)
862 if ($chksymb[$i] ne '')
863 { print OUTASM "\t\.globl \.$chksymb[$i]\n"; };
864 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
865 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
866 else { $r = $chk[$i]; $printDS = 0; };
867 $chk[$i] = &mangle_powerpc_tailjump($r);
869 &print_doctored($chk[$i], 0);
870 if ($TargetPlatform =~ /^powerpc-|^rs6000-/ && $printDS) {
871 #ok if ($chksymb[$i] !~ /\_regMain/) {
872 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
873 print OUTASM "${p}TOC[tc0], 0\n";
878 } elsif ( $chkcat[$i] eq 'toss' ) {
879 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
881 } elsif ( $chkcat[$i] eq 'data' ) {
882 if ($chk[$i] ne '') {
883 print OUTASM $T_HDR_data;
884 print OUTASM $chk[$i];
887 } elsif ( $chkcat[$i] eq 'consist' ) {
888 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
889 local($consist) = "$1.$2.$3";
891 $consist =~ s/\//./g;
893 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
894 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
896 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
897 # on mips: consistency string is just a v
898 # horrible bunch of .bytes,
899 # which I am too lazy to sort out (WDP 95/05)
901 print STDERR "Couldn't grok consistency: ", $chk[$i];
904 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
905 # we can just re-constitute this one...
906 # NB: we emit _three_ underscores no matter what,
907 # so ghc-split doesn't have to care.
908 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
910 } elsif ( $chkcat[$i] eq 'closure'
911 || $chkcat[$i] eq 'infotbl'
912 || $chkcat[$i] eq 'slow'
913 || $chkcat[$i] eq 'fast' ) { # do them in that order
914 $symb = $chksymb[$i];
917 if ( defined($closurechk{$symb}) ) {
918 print OUTASM $T_HDR_closure;
919 print OUTASM $chk[$closurechk{$symb}];
920 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
924 if ( defined($infochk{$symb}) ) {
926 print OUTASM $T_HDR_info;
927 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
928 if ( !defined($slowchk{$symb}) && defined($fastchk{$symb}) ) {
929 $fastname = $chk[$fastchk{$symb}];
930 $fastname =~ s/([_A-Za-z]*_fast\d+):.*(.*\n)*/\1/;
931 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long $fastname/;
933 $chk[$infochk{$symb}] =~ s/\.long ([_A-Za-z]\S+_entry)/\.long \.\1/;
934 $chk[$infochk{$symb}] =~ s/\.long ([A-Za-z]\S+_upd)/\.long \.\1/;
935 $chk[$infochk{$symb}] =~ s/\.long (IndUpdRet\S+)/\.long \.\1/;
936 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long \.StdErrorCode/;
937 $chk[$infochk{$symb}] =~ s/\.long UpdErr/\.long \.UpdErr/;
938 print OUTASM $chk[$infochk{$symb}];
940 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
942 # entry code will be put here!
945 if ( $chk[$infochk{$symb}] =~ /$TDOTWORD[@]?\s+([A-Za-z0-9_]+_entry)$/o
946 && $1 ne "${T_US}${symb}_entry" ) {
947 print STDERR "!!! entry point???\n",$chk[$infochk{$symb}];
950 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
954 if ( defined($slowchk{$symb}) ) {
956 # teach it to drop through to the fast entry point:
957 $c = $chk[$slowchk{$symb}];
959 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
960 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
961 if ($symb =~ /^[_A-Z]/)
963 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
964 print OUTASM "\.csect ${symb}_entry[DS]\n";
965 print OUTASM "${p}TOC[tc0], 0\n";
967 $r =~ s/\.csect \.text\[PR\]\n//; # todo: properly - andre
968 $c = &mangle_powerpc_tailjump($r);
971 if ( defined($fastchk{$symb}) ) {
972 if ( $TargetPlatform =~ /^alpha-/ ) {
973 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
974 } elsif ( $TargetPlatform =~ /^hppa/ ) {
975 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
976 } elsif ( $TargetPlatform =~ /^i386-/ ) {
977 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edx\n\tjmp \*\%edx\n//;
978 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%eax\n\tjmp \*\%eax\n//;
979 } elsif ( $TargetPlatform =~ /^mips-/ ) {
980 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
981 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
982 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
983 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
984 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ ) {
985 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
986 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
987 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
988 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
990 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
994 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
995 # On alphas, hppa: no very good way to look for "dangling"
996 # references to fast-entry point.
997 # (questionable re hppa and mips...)
998 print STDERR "still has jump to fast entry point:\n$c"
999 if $c =~ /$TUS[@]?$symb[@]?_fast/; # NB: paranoia
1002 print OUTASM $T_HDR_entry;
1004 &print_doctored($c, 1); # NB: the 1!!!
1006 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1010 if ( defined($fastchk{$symb}) ) {
1011 $c = $chk[$fastchk{$symb}];
1012 if ( ! defined($slowchk{$symb})
1013 # ToDo: the || clause can go once we're no longer
1014 # concerned about producing exactly the same output as before
1015 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1017 print OUTASM $T_HDR_fast;
1019 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1020 local(@lbls) = split(/:/, $c);
1021 $fullname = $lbls[0];
1022 $fullname =~ s/$T_MOVE_DIRVS//g;
1023 if ( $fullname =~ /^[A-Z]/)
1024 { print OUTASM "\t\.globl \.${fullname}\n";
1026 # print OUTASM "\t\.lglobl \.${fullname}\n"; #todo: rm - andre
1028 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1029 $c = &mangle_powerpc_tailjump($c);
1031 &print_doctored($c, 0);
1032 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1035 } elsif ( $chkcat[$i] eq 'vector'
1036 || $chkcat[$i] eq 'direct' ) { # do them in that order
1037 $symb = $chksymb[$i];
1040 if ( defined($vectorchk{$symb}) ) {
1041 print OUTASM $T_HDR_vector;
1042 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1043 if ( $symb =~ /^[A-Z]/) {
1044 print OUTASM "\t\.globl \.vtbl_${symb}\n";
1045 print OUTASM "\t\.globl vtbl_${symb}\n";
1047 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1048 print OUTASM ".vtbl_${symb}:\n";
1049 print OUTASM $chk[$vectorchk{$symb}];
1051 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1053 # direct return code will be put here!
1054 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1058 if ( defined($directchk{$symb}) ) {
1059 print OUTASM $T_HDR_direct;
1060 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1061 ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$directchk{$symb}]);
1062 &print_doctored($r, 0);
1063 print OUTASM "\.csect ${symb}DirectReturn[DS]\n";
1064 print OUTASM "${p}TOC[tc0], 0\n";
1066 &print_doctored($chk[$directchk{$symb}], 0);
1068 $chkcat[$directchk{$symb}] = 'DONE ALREADY';
1070 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1071 # Alphas: the commented nop is for the splitter, to ensure
1072 # that no module ends with a label as the very last
1073 # thing. (The linker will adjust the label to point
1074 # to the first code word of the next module linked in,
1075 # even if alignment constraints cause the label to move!)
1077 print OUTASM "\t# nop\n";
1080 } elsif ( $chkcat[$i] eq 'toc' ) {
1081 # silly optimisation to print tocs, since they come in groups...
1082 print OUTASM $T_HDR_toc;
1084 while ($chkcat[$j] eq 'toc')
1085 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1088 print OUTASM $chk[$j];
1090 $chkcat[$j] = 'DONE ALREADY';
1095 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1099 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1101 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1102 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1106 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1107 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1112 sub mash_hppa_prologue { # OK, epilogue, too
1115 # toss all prologue stuff
1116 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1118 # Lie about our .CALLINFO
1119 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1126 # toss all epilogue stuff
1127 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1129 # Sorry; we moved the _info stuff to the code segment.
1130 s/_info,DATA/_info,CODE/g;
1137 sub print_doctored {
1138 local($_, $need_fallthru_patch) = @_;
1140 if ( $TargetPlatform !~ /^i386-/
1141 || ! /^\t[a-z]/ ) { # no instructions in here, apparently
1145 # OK, must do some x86 **HACKING**
1147 local($entry_patch) = '';
1148 local($exit_patch) = '';
1149 local($call_entry_patch)= '';
1150 local($call_exit_patch) = '';
1152 #OLD: # first, convert calls to *very magic form*: (ToDo: document
1156 # call _?PerformGC_wrapper
1160 # call _?PerformGC_wrapper
1162 # The reason we do this now is to remove the apparent use of
1163 # %esp, which would throw off the "what patch code do we need"
1166 # Special macros in ghc/includes/COptWraps.lh, used in
1167 # ghc/runtime/CallWrap_C.lc, are required for this to work!
1170 s/^\tpushl \$(\d+)\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \$$1,\%eax\n\tcall ${T_DO_GC}\n/go;
1171 s/^\tpushl \%eax\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tcall ${T_DO_GC}\n/go;
1172 s/^\tpushl \%edx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%edx,\%eax\n\tcall ${T_DO_GC}\n/go;
1174 #= if ( $StolenX86Regs <= 4 ) { # %ecx is ordinary reg
1175 #= s/^\tpushl \%ecx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%ecx,\%eax\n\tcall ${T_DO_GC}\n/go;
1178 # gotta watch out for weird instructions that
1179 # invisibly smash various regs:
1180 # rep* %ecx used for counting
1181 # scas* %edi used for destination index
1182 # cmps* %e[sd]i used for indices
1183 # loop* %ecx used for counting
1188 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1190 # * GCC used an "STG reg" for its own purposes
1192 # * some secret uses of machine reg, requiring STG reg
1193 # to be saved/restored
1195 # The most dangerous "GCC uses" of an "STG reg" are when
1196 # the reg holds the target of a jmp -- it's tricky to
1197 # insert the patch-up code before we get to the target!
1198 # So here we change the jmps:
1200 # --------------------------------------------------------
1201 # it can happen that we have jumps of the form...
1202 # jmp *<something involving %esp>
1204 # jmp <something involving another naughty register...>
1206 # a reasonably-common case is:
1208 # movl $_blah,<bad-reg>
1211 # which is easily fixed as:
1213 # sigh! try to hack around it...
1216 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1217 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1218 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1219 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1220 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1221 if /(jmp|call) .*\%esi/;
1223 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1224 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1225 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1226 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1227 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1228 if /(jmp|call) .*\%edi/;
1230 #= if ($StolenX86Regs <= 4 ) { # spurious uses of ecx?
1231 #= s/^\tmovl (.*),\%ecx\n\tjmp \*%ecx\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1232 #= s/^\tjmp \*(-?\d*)\((.*\%ecx.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1233 #= s/^\tjmp \*\%ecx\n/\tmovl \%ecx,\%eax\n\tjmp \*\%eax\n/g;
1234 #= die "$Pgm: (mangler) still have jump involving \%ecx!\n$_"
1235 #= if /(jmp|call) .*\%ecx/;
1238 # OK, now we can decide what our patch-up code is going to
1240 if ( $StolenX86Regs <= 2
1241 && ( /32\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1242 $entry_patch .= "\tmovl \%esi,32(\%ebx)\n";
1243 $exit_patch .= "\tmovl 32(\%ebx),\%esi\n";
1244 # nothing for call_{entry,exit} because %esi is callee-save
1246 if ( $StolenX86Regs <= 3
1247 && ( /64\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # SpA (edi)
1248 $entry_patch .= "\tmovl \%edi,64(\%ebx)\n";
1249 $exit_patch .= "\tmovl 64(\%ebx),\%edi\n";
1250 # nothing for call_{entry,exit} because %edi is callee-save
1252 #= if ( $StolenX86Regs <= 4
1253 #= && ( /80\(\%ebx\)/ || /\%ecx/ || /^\t(rep|loop)/ ) ) { # Hp (ecx)
1254 #= $entry_patch .= "\tmovl \%ecx,80(\%ebx)\n";
1255 #= $exit_patch .= "\tmovl 80(\%ebx),\%ecx\n";
1257 #= $call_exit_patch .= "\tmovl \%ecx,108(\%ebx)\n";
1258 #= $call_entry_patch .= "\tmovl 108(\%ebx),\%ecx\n";
1259 #= # I have a really bad feeling about this if we ever
1260 #= # have a nested call...
1261 #= # NB: should just hide it somewhere in the C stack.
1263 # --------------------------------------------------------
1264 # next, here we go with non-%esp patching!
1266 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1267 s/^(\tcall .*\n(\taddl \$\d+,\%esp\n)?)/$call_exit_patch$1$call_entry_patch/g; # _all_ calls
1269 # fix _all_ non-local jumps:
1271 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1272 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1274 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1276 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1277 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1279 # fix post-PerformGC wrapper (re-)entries ???
1281 if ($StolenX86Regs == 2 ) {
1282 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1283 if /^\t(jmp|call) .*\%e(si|di)/;
1284 #= die "ARGH! Jump uses \%esi, \%edi, or \%ecx with -monly-2-regs:\n$_"
1285 #= if /^\t(jmp|call) .*\%e(si|di|cx)/;
1286 } elsif ($StolenX86Regs == 3 ) {
1287 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1288 if /^\t(jmp|call) .*\%edi/;
1289 #= die "ARGH! Jump uses \%edi or \%ecx with -monly-3-regs:\n$_"
1290 #= if /^\t(jmp|call) .*\%e(di|cx)/;
1291 #= } elsif ($StolenX86Regs == 4 ) {
1292 #= die "ARGH! Jump uses \%ecx with -monly-4-regs:\n$_"
1293 #= if /^\t(jmp|call) .*\%ecx/;
1296 # final peephole fixes
1298 s/^\tmovl \%eax,36\(\%ebx\)\n\tjmp \*36\(\%ebx\)\n/\tmovl \%eax,36\(\%ebx\)\n\tjmp \*\%eax\n/;
1299 # the short form may tickle perl bug:
1300 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1301 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1302 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1303 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1304 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1306 # Hacks to eliminate some reloads of Hp. Worth about 5% code size.
1307 # We could do much better than this, but at least it catches about
1308 # half of the unnecessary reloads.
1309 # Note that these will stop working if either:
1310 # (i) the offset of Hp from BaseReg changes from 80, or
1311 # (ii) the register assignment of BaseReg changes from %ebx
1313 s/^\tmovl 80\(\%ebx\),\%e.x\n\tmovl \$(.*),(-?[0-9]*)\(\%e.x\)\n\tmovl 80\(\%ebx\),\%e(.)x/\tmovl 80\(\%ebx\),\%e$3x\n\tmovl \$$1,$2\(\%e$3x\)/g;
1315 s/^\tmovl 80\(\%ebx\),\%e(.)x\n\tmovl (.*),\%e(.)x\n\tmovl \%e$3x,(-?[0-9]*\(\%e$1x\))\n\tmovl 80\(\%ebx\),\%e$1x/\tmovl 80\(\%ebx\),\%e$1x\n\tmovl $2,\%e$3x\n\tmovl \%e$3x,$4/g;
1317 s/^\tmovl 80\(\%ebx\),\%edx((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[abc]x)))+)\n\tmovl 80\(\%ebx\),\%edx/\tmovl 80\(\%ebx\),\%edx$1/g;
1318 s/^\tmovl 80\(\%ebx\),\%eax((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[bcd]x)))+)\n\tmovl 80\(\%ebx\),\%eax/\tmovl 80\(\%ebx\),\%eax$1/g;
1320 # --------------------------------------------------------
1321 # that's it -- print it
1323 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1327 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1328 print OUTASM $exit_patch;
1329 # ToDo: make it not print if there is a "jmp" at the end
1335 sub init_FUNNY_THINGS {
1336 %KNOWN_FUNNY_THING = (
1337 "${T_US}CheckHeapCode${T_POST_LBL}", 1,
1338 "${T_US}CommonUnderflow${T_POST_LBL}", 1,
1339 "${T_US}Continue${T_POST_LBL}", 1,
1340 "${T_US}EnterNodeCode${T_POST_LBL}", 1,
1341 "${T_US}ErrorIO_call_count${T_POST_LBL}", 1,
1342 "${T_US}ErrorIO_innards${T_POST_LBL}", 1,
1343 "${T_US}IndUpdRetDir${T_POST_LBL}", 1,
1344 "${T_US}IndUpdRetV0${T_POST_LBL}", 1,
1345 "${T_US}IndUpdRetV1${T_POST_LBL}", 1,
1346 "${T_US}IndUpdRetV2${T_POST_LBL}", 1,
1347 "${T_US}IndUpdRetV3${T_POST_LBL}", 1,
1348 "${T_US}IndUpdRetV4${T_POST_LBL}", 1,
1349 "${T_US}IndUpdRetV5${T_POST_LBL}", 1,
1350 "${T_US}IndUpdRetV6${T_POST_LBL}", 1,
1351 "${T_US}IndUpdRetV7${T_POST_LBL}", 1,
1352 "${T_US}PrimUnderflow${T_POST_LBL}", 1,
1353 "${T_US}StackUnderflowEnterNode${T_POST_LBL}", 1,
1354 "${T_US}StdErrorCode${T_POST_LBL}", 1,
1355 "${T_US}UnderflowVect0${T_POST_LBL}", 1,
1356 "${T_US}UnderflowVect1${T_POST_LBL}", 1,
1357 "${T_US}UnderflowVect2${T_POST_LBL}", 1,
1358 "${T_US}UnderflowVect3${T_POST_LBL}", 1,
1359 "${T_US}UnderflowVect4${T_POST_LBL}", 1,
1360 "${T_US}UnderflowVect5${T_POST_LBL}", 1,
1361 "${T_US}UnderflowVect6${T_POST_LBL}", 1,
1362 "${T_US}UnderflowVect7${T_POST_LBL}", 1,
1363 "${T_US}UpdErr${T_POST_LBL}", 1,
1364 "${T_US}UpdatePAP${T_POST_LBL}", 1,
1365 "${T_US}WorldStateToken${T_POST_LBL}", 1,
1366 "${T_US}_Enter_Internal${T_POST_LBL}", 1,
1367 "${T_US}_PRMarking_MarkNextAStack${T_POST_LBL}", 1,
1368 "${T_US}_PRMarking_MarkNextBStack${T_POST_LBL}", 1,
1369 "${T_US}_PRMarking_MarkNextCAF${T_POST_LBL}", 1,
1370 "${T_US}_PRMarking_MarkNextGA${T_POST_LBL}", 1,
1371 "${T_US}_PRMarking_MarkNextRoot${T_POST_LBL}", 1,
1372 "${T_US}_PRMarking_MarkNextSpark${T_POST_LBL}", 1,
1373 "${T_US}_PRMarking_MarkNextEvent${T_POST_LBL}", 1,
1374 "${T_US}_PRMarking_MarkNextClosureInFetchBuffer${T_POST_LBL}", 1,
1375 "${T_US}_Scavenge_Forward_Ref${T_POST_LBL}", 1,
1376 "${T_US}__std_entry_error__${T_POST_LBL}", 1,
1377 "${T_US}_startMarkWorld${T_POST_LBL}", 1,
1378 "${T_US}resumeThread${T_POST_LBL}", 1,
1379 "${T_US}startCcRegisteringWorld${T_POST_LBL}", 1,
1380 "${T_US}startEnterFloat${T_POST_LBL}", 1,
1381 "${T_US}startEnterInt${T_POST_LBL}", 1,
1382 "${T_US}startPerformIO${T_POST_LBL}", 1,
1383 "${T_US}startStgWorld${T_POST_LBL}", 1,
1384 "${T_US}stopPerformIO${T_POST_LBL}", 1
1389 The following table reversal is used for both info tables and return
1390 vectors. In both cases, we remove the first entry from the table,
1391 reverse the table, put the label at the end, and paste some code
1392 (that which is normally referred to by the first entry in the table)
1393 right after the table itself. (The code pasting is done elsewhere.)
1397 local($symb, $tbl, $discard1) = @_;
1399 local($before) = '';
1401 local(@imports) = (); # hppa only
1404 local(@lines) = split(/\n/, $tbl);
1405 local($i, $j); #local ($i, $extra, $words_to_pad, $j);
1407 # see comment in mangleAsm as to why this silliness is needed.
1408 local($TDOTWORD) = ${T_DOT_WORD};
1409 local($TDOTGLOBAL) = ${T_DOT_GLOBAL};
1410 local($TUS) = ${T_US};
1411 local($TPOSTLBL) = ${T_POST_LBL};
1413 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t$TDOTWORD\s+/o; $i++) {
1414 $label .= $lines[$i] . "\n",
1415 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info$TPOSTLBL[@]?$/o
1416 || $lines[$i] =~ /$TDOTGLOBAL/o
1417 || $lines[$i] =~ /^$TUS[@]?vtbl_\S+$TPOSTLBL[@]?$/o;
1419 $before .= $lines[$i] . "\n"; # otherwise...
1422 if ( $TargetPlatform !~ /^hppa/ ) {
1423 for ( ; $i <= $#lines && $lines[$i] =~ /^\t$TDOTWORD\s+/o; $i++) {
1424 push(@words, $lines[$i]);
1426 } else { # hppa weirdness
1427 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1428 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1429 push(@imports, $lines[$i]);
1431 # We don't use HP's ``function pointers''
1432 # We just use labels in code space, like normal people
1433 $lines[$i] =~ s/P%//;
1434 push(@words, $lines[$i]);
1439 # now throw away the first word (entry code):
1440 shift(@words) if $discard1;
1442 # Padding removed to reduce code size and improve performance on Pentiums.
1444 # for 486-cache-friendliness, we want our tables aligned
1445 # on 16-byte boundaries (.align 4). Let's pad:
1446 # $extra = ($#words + 1) % 4;
1447 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1448 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1450 for (; $i <= $#lines; $i++) {
1451 $after .= $lines[$i] . "\n";
1454 # Alphas:If we have anonymous text (not part of a procedure), the
1455 # linker may complain about missing exception information. Bleh.
1456 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1457 $before = "\t.ent $1\n" . $before;
1458 $after .= "\t.end $1\n";
1462 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1463 . join("\n", (reverse @words)) . "\n"
1466 # print STDERR "before=$before\n";
1467 # print STDERR "label=$label\n";
1468 # print STDERR "words=",(reverse @words),"\n";
1469 # print STDERR "after=$after\n";
1476 sub mini_mangle_asm_i386 {
1477 local($in_asmf, $out_asmf) = @_;
1479 &init_TARGET_STUFF();
1481 # see mangleAsm comment
1482 local($TUS) = ${T_US};
1483 local($TPOSTLBL)=${T_POST_LBL};
1485 open(INASM, "< $in_asmf")
1486 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1487 open(OUTASM,"> $out_asmf")
1488 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1494 /^$TUS[@]?(PerformGC|StackOverflow|Yield|PerformReschedule)_wrapper$TPOSTLBL\n/o;
1495 print OUTASM "\tmovl \%esp, ${T_US}__temp_esp\n";
1496 print OUTASM "\tmovl \%eax, ${T_US}__temp_eax\n";
1500 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1501 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1505 The HP is a major nuisance. The threaded code mangler moved info
1506 tables from data space to code space, but unthreaded code in the RTS
1507 still has references to info tables in data space. Since the HP
1508 linker is very precise about where symbols live, we need to patch the
1509 references in the unthreaded RTS as well.
1512 sub mini_mangle_asm_hppa {
1513 local($in_asmf, $out_asmf) = @_;
1515 open(INASM, "< $in_asmf")
1516 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1517 open(OUTASM,"> $out_asmf")
1518 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1521 s/_info,DATA/_info,CODE/; # Move _info references to code space
1527 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1528 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1534 sub mini_mangle_asm_powerpc {
1535 local($in_asmf, $out_asmf) = @_;
1537 open(INASM, "< $in_asmf")
1538 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1539 open(OUTASM,"> $out_asmf")
1540 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1543 s/long _PRStart/long ._PRStart/;
1544 s/long _PRIn_/long ._PRIn_/;
1545 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1546 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1547 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1548 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1549 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1550 s/\.tc EnterNodeCode\[TC]\,EnterNodeCode\[DS\]/\.tc EnterNodeCode\[TC]\,.EnterNodeCode/; # CONC
1551 s/\.tc CheckHeapCode\[TC]\,CheckHeapCode\[DS\]/\.tc CheckHeapCode\[TC]\,.CheckHeapCode/; # CONC
1556 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1557 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1560 sub mangle_powerpc_tailjump {
1562 local($maybe_more) = 1;
1563 while (($c =~ /\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1566 $lcsymb =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1567 # the checks for r1 and r2 are mostly paranoia...
1569 $r1 =~ s/(.*\n)*\tlw?z? (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1571 $r2 =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1574 $c =~ s/((.*\n)*)\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1580 # make "require"r happy...