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-.*/ ) {
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
229 # $T_CONST_LBL = '^LC\.\.(\d+):$'; # regexp for what such a lbl looks like
232 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
233 # $T_MOVE_DIRVS = '^(\s*(\.toc|.csect \S+|\.l?globl \S+|\.align \d+)\n)';
234 $T_COPY_DIRVS = '\.(l?globl)';
236 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
237 $T_DOT_WORD = '\.long';
238 $T_DOT_GLOBAL = '\.globl';
239 $T_HDR_toc = "\.toc\n";
240 $T_HDR_literal = "# literal\n\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
241 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
242 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
243 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
244 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
245 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
246 $T_HDR_entry = "# entry\n";
247 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
248 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
249 $T_HDR_direct = "# direct\n";
251 # $T_HDR_literal = "\.section\t\.rodata\n";
252 # $T_HDR_misc = "\.text\n\t\.align 2\n";
253 # $T_HDR_data = "\.data\n\t\.align 2\n";
254 # $T_HDR_consist = "\.text\n";
255 # $T_HDR_closure = "\.data\n\t\.align 2\n";
256 # $T_HDR_info = "\.text\n\t\.align 2\n";
257 # $T_HDR_entry = "\.text\n";
258 # $T_HDR_fast = "\.text\n\t\.align 2\n";
259 # $T_HDR_vector = "\.text\n\t\.align 2\n";
260 # $T_HDR_direct = "\.text\n\t\.align 2\n";
262 #--------------------------------------------------------#
263 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
265 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
266 $T_US = ''; # _ if symbols have an underscore on the front
267 $T_DO_GC = 'PerformGC_wrapper';
268 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
269 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
272 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
273 $T_COPY_DIRVS = '\.(global|proc|stab)';
275 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
276 $T_DOT_WORD = '\.word';
277 $T_DOT_GLOBAL = '^\t\.global';
278 $T_HDR_literal = "\.text\n\t\.align 8\n";
279 $T_HDR_misc = "\.text\n\t\.align 4\n";
280 $T_HDR_data = "\.data\n\t\.align 8\n";
281 $T_HDR_consist = "\.text\n";
282 $T_HDR_closure = "\.data\n\t\.align 4\n";
283 $T_HDR_info = "\.text\n\t\.align 4\n";
284 $T_HDR_entry = "\.text\n\t\.align 4\n";
285 $T_HDR_fast = "\.text\n\t\.align 4\n";
286 $T_HDR_vector = "\.text\n\t\.align 4\n";
287 $T_HDR_direct = "\.text\n\t\.align 4\n";
289 #--------------------------------------------------------#
290 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
292 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
293 $T_US = '_'; # _ if symbols have an underscore on the front
294 $T_DO_GC = '_PerformGC_wrapper';
295 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
296 $T_CONST_LBL = '^LC(\d+):$';
299 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
300 $T_COPY_DIRVS = '\.(global|proc|stab)';
301 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
303 $T_DOT_WORD = '\.word';
304 $T_DOT_GLOBAL = '^\t\.global';
305 $T_HDR_literal = "\.text\n\t\.align 8\n";
306 $T_HDR_misc = "\.text\n\t\.align 4\n";
307 $T_HDR_data = "\.data\n\t\.align 8\n";
308 $T_HDR_consist = "\.text\n";
309 $T_HDR_closure = "\.data\n\t\.align 4\n";
310 $T_HDR_info = "\.text\n\t\.align 4\n";
311 $T_HDR_entry = "\.text\n\t\.align 4\n";
312 $T_HDR_fast = "\.text\n\t\.align 4\n";
313 $T_HDR_vector = "\.text\n\t\.align 4\n";
314 $T_HDR_direct = "\.text\n\t\.align 4\n";
316 #--------------------------------------------------------#
318 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
323 print STDERR "T_STABBY: $T_STABBY\n";
324 print STDERR "T_US: $T_US\n";
325 print STDERR "T_DO_GC: $T_DO_GC\n";
326 print STDERR "T_PRE_APP: $T_PRE_APP\n";
327 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
328 print STDERR "T_POST_LBL: $T_POST_LBL\n";
329 if ( $TargetPlatform =~ /^i386-/ ) {
330 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
331 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
332 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
334 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
335 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
336 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
337 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
338 print STDERR "T_HDR_literal: $T_HDR_literal\n";
339 print STDERR "T_HDR_misc: $T_HDR_misc\n";
340 print STDERR "T_HDR_data: $T_HDR_data\n";
341 print STDERR "T_HDR_consist: $T_HDR_consist\n";
342 print STDERR "T_HDR_closure: $T_HDR_closure\n";
343 print STDERR "T_HDR_info: $T_HDR_info\n";
344 print STDERR "T_HDR_entry: $T_HDR_entry\n";
345 print STDERR "T_HDR_fast: $T_HDR_fast\n";
346 print STDERR "T_HDR_vector: $T_HDR_vector\n";
347 print STDERR "T_HDR_direct: $T_HDR_direct\n";
353 %************************************************************************
355 \subsection{Mangle away}
357 %************************************************************************
361 local($in_asmf, $out_asmf) = @_;
363 # multi-line regexp matching:
368 &init_TARGET_STUFF();
369 &init_FUNNY_THINGS();
371 # perl4 on alphas SEGVs when give ${foo} substitutions in patterns.
372 # To avoid them we declare some locals that allows to avoid using curlies.
373 local($TUS) = ${T_US};
374 local($TPOSTLBL) = ${T_POST_LBL};
375 local($TMOVEDIRVS) = ${T_MOVE_DIRVS};
376 local($TPREAPP) = ${T_PRE_APP};
377 local($TCOPYDIRVS) = ${T_COPY_DIRVS};
378 local($TDOTWORD) = ${T_DOT_WORD};
380 open(INASM, "< $in_asmf")
381 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
382 open(OUTASM,"> $out_asmf")
383 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
385 # read whole file, divide into "chunks":
386 # record some info about what we've found...
388 @chk = (); # contents of the chunk
389 $numchks = 0; # number of them
390 @chkcat = (); # what category of thing in each chunk
391 @chksymb = (); # what symbol(base) is defined in this chunk
392 %slowchk = (); # ditto, its regular "slow" entry code
393 %fastchk = (); # ditto, fast entry code
394 %closurechk = (); # ditto, the (static) closure
395 %infochk = (); # given a symbol base, say what chunk its info tbl is in
396 %vectorchk = (); # ditto, return vector table
397 %directchk = (); # ditto, direct return code
398 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
400 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
403 next if $T_STABBY && /^\.stab.*$TUS[@]?__stg_split_marker/o;
404 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
405 next if /$TPREAPP(NO_)?APP/o;
406 next if /^;/ && $TargetPlatform =~ /^hppa/;
408 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc)-/;
410 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-/;
412 if ( $TargetPlatform =~ /^mips-/
413 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
414 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
416 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
417 # duplicated from the bottom
421 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
422 # Alphas: Local labels not to be confused with new chunks
425 # NB: all the rest start with a non-space
427 } elsif ( $TargetPlatform =~ /^mips-/
428 && /^\d+:/ ) { # a funny-looking very-local label
431 } elsif ( /$T_CONST_LBL/o ) {
433 $chkcat[$i] = 'literal';
436 } elsif ( /^$TUS[@]?__stg_split_marker(\d+)$TPOSTLBL[@]?$/o ) {
438 $chkcat[$i] = 'splitmarker';
441 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_info$TPOSTLBL[@]?$/o ) {
444 $chkcat[$i] = 'infotbl';
445 $chksymb[$i] = $symb;
447 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
449 $infochk{$symb} = $i;
451 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_entry$TPOSTLBL[@]?$/o ) {
453 $chkcat[$i] = 'slow';
458 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_fast\d+$TPOSTLBL[@]?$/o ) {
460 $chkcat[$i] = 'fast';
465 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_closure$TPOSTLBL[@]?$/o ) {
467 $chkcat[$i] = 'closure';
470 $closurechk{$1} = $i;
472 } elsif ( /^$TUS[@]?ghc.*c_ID$TPOSTLBL/o ) {
474 $chkcat[$i] = 'consist';
476 } elsif ( /^($TUS[@]?__gnu_compiled_c|gcc2_compiled\.)$TPOSTLBL/o ) {
479 } elsif ( /^$TUS[@]?ErrorIO_call_count$TPOSTLBL[@]?$/o # HACK!!!!
480 || /^$TUS[A-Za-z0-9_]+\.\d+$TPOSTLBL[@]?$/o
481 || /^$TUS[@]?.*_CAT$TPOSTLBL[@]?$/o # PROF: _entryname_CAT
482 || /^$TUS[@]?CC_.*_struct$TPOSTLBL[@]?$/o # PROF: _CC_ccident_struct
483 || /^$TUS[@]?.*_done$TPOSTLBL[@]?$/o # PROF: _module_done
484 || /^$TUS[@]?_module_registered$TPOSTLBL[@]?$/o # PROF: _module_registered
487 $chkcat[$i] = 'data';
490 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
493 $chksymb[$i] = $1; # useless, $1 is always '', since we end up using the second
494 # pattern /^hppa/. Change $1 to ''. Or reverse the pattern.
495 # Anyway, it is never used. - andre
498 } elsif ( $TargetPlatform =~ /^powerpc-/ && /^LC\.\.([0-9]+)/ ) {
499 # } elsif ( /^LC\.\.([0-9]+)/ && $TargetPlatform =~ /^powerpc-/ ) {
504 } elsif ( /^$TUS[@]?(ret_|djn_)/o ) {
506 $chkcat[$i] = 'misc';
509 $chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-/) ;
511 } elsif ( /^$TUS[@]?vtbl_([A-Za-z0-9_]+)$TPOSTLBL[@]?$/o ) {
513 $chkcat[$i] = 'vector';
518 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)DirectReturn$TPOSTLBL[@]?$/o ) {
520 $chkcat[$i] = 'direct';
525 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_upd$TPOSTLBL[@]?$/o ) {
527 $chkcat[$i] = 'misc';
528 if ($TargetPlatform =~ /^powerpc-/)
529 { $chksymb[$i] = $symbtmp;}
530 else { $chksymb[$i] = ''; };
533 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
534 && /^(_uname|uname|stat|fstat):/ ) {
535 # for some utterly bizarre reason, this platform
536 # likes to drop little local C routines with these names
537 # into each and every .o file that #includes the
538 # relevant system .h file. Yuck. We just don't
539 # tolerate them in .hc files (which we are processing
540 # here). If you need to call one of these things from
541 # Haskell, make a call to your own C wrapper, then
542 # put that C wrapper (which calls one of these) in a
543 # plain .c file. WDP 95/12
545 $chkcat[$i] = 'toss';
548 } elsif ( /^$TUS[@]?[A-Za-z0-9_]/o
549 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
551 && ( $TargetPlatform !~ /^powerpc/ # ditto
552 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
555 print STDERR "Funny global thing?: $_"
556 unless $KNOWN_FUNNY_THING{$thing}
557 || /^$TUS[@]?_(PRIn|PRStart).*$TPOSTLBL[@]?$/o # pointer reversal GC routines
558 || /^$TUS[@]?CC_.*$TPOSTLBL$/o # PROF: _CC_ccident ([@]? is a silly hack (see above))
559 || /^$TUS[@]?_reg.*$TPOSTLBL$/o; # PROF: __reg<module>
561 $chkcat[$i] = 'misc';
562 if ($TargetPlatform =~ /^powerpc-/)
563 { $chksymb[$i] = $thing; }
564 else { $chksymb[$i] = ''; };
566 } else { # simple line (duplicated at the top)
571 $numchks = $#chk + 1;
573 # the division into chunks is imperfect;
574 # we throw some things over the fence into the next
577 # also, there are things we would like to know
578 # about the whole module before we start spitting
581 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-|power)/) ? 1 : 0;
583 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
585 # Alphas: NB: we start meddling at chunk 1, not chunk 0
586 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
587 # spits a ".quad 0" in after the v first ".rdata"; we
588 # detect this special case (tossing the ".quad 0")!
589 local($magic_rdata_seen) = 0;
591 # HPPAs, MIPSen: also start medding at chunk 1
593 # AIX hack for the moment, to join up multiple identical tocs
594 if ($TargetPlatform =~ /^powerpc/) {
595 print OUTASM ".toc\n.csect .text[PR]\ngcc2_compiled.:\n__gnu_compiled_c:\n";
596 # print OUTASM ".csect _ghc88142.rw_c[RW]\n\t.align 2\nghc_cc_ID:\n\t.byte \"@(#)cc prelude/Prelude.hc\"\n\t.byte 9\n\t.byte "35.0,,"\n\t.byte 0"
597 print OUTASM $T_HDR_toc;
598 %tocequiv = (); # maps toc symbol number to toc symbol
599 %revtocequiv = (); # maps toc symbol to toc symbol number
600 for ($i = 1; $i < $numchks; $i++) {
601 $chk[$i] =~ s/\[RW\]//g;
602 $chk[$i] =~ s/\[DS\]//g;
603 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
604 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
605 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
606 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
607 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
608 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
609 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(djn_\S+)/\t\.tc \1\[TC\],\.\2/;
610 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
611 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],ErrorIO_innards/\t\.tc \1\[TC\],\.ErrorIO_innards/;
612 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],startStgWorld/\t\.tc \1\[TC\],\.startStgWorld/;
613 $chk[$i] =~ s/\.tc UpdatePAP\[TC\],UpdatePAP/\.tc UpdatePAP\[TC\],\.UpdatePAP/;
614 $chk[$i] =~ s/\.tc IndUpdRetDir\[TC\],IndUpdRetDir/\.tc IndUpdRetDir\[TC\],\.IndUpdRetDir/;
615 $chk[$i] =~ s/\t\.tc (_PRStart_\S+)\[TC\],_PRStart_\S+/\t\.tc \1\[TC\],\.\1/;
617 $tocnumber = $chksymb[$i];
619 $tocsymb =~ s/^LC\.\.\d+:\n//;
620 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
621 $tocequiv{$tocnumber} = $tocsymb;
623 # limit is the limit of the scope of the current toc (either eof or find a new toc)
625 while ($chkcat[$limit] eq 'toc') {$limit++;};
626 while (($limit < $numchks) && ($chkcat[$limit] ne 'toc')) {$limit++;};
628 if ( $revtocequiv{$tocsymb} eq '') {
629 $revtocequiv{$tocsymb} = $tocnumber;
630 if ( $chk[$i] !~ /\.tc \S+_fast\d+\[TC\],\.\S+_fast\d+/ # no need to print these
631 || $chk[$i] !~ /\.tc UpdatePAP\[TC\],\.UpdatePAP/
632 || $chk[$i] !~ /\.tc \S+\[TC\],\.\S+_entry\n/ )
633 { print OUTASM $chk[$i]; };
635 for ($j = $i; $j <= $limit; $j++) {
636 $chk[$j] =~ s/LC\.\.$tocnumber\(/LC\.\.${revtocequiv{$tocsymb}}\(/g;
639 $chkcat[$i] = 'DONE ALREADY';
644 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
645 $c = $chk[$i]; # convenience copy
647 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
649 # toss all prologue stuff; HPPA is pretty weird
651 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
653 # be slightly paranoid to make sure there's
654 # nothing surprising in there
655 if ( $c =~ /--- BEGIN ---/ ) {
656 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
658 if ($TargetPlatform =~ /^i386-/) {
659 $p =~ s/^\tpushl \%edi\n//;
660 $p =~ s/^\tpushl \%esi\n//;
661 $p =~ s/^\tsubl \$\d+,\%esp\n//;
662 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
663 } elsif ($TargetPlatform =~ /^m68k-/) {
664 $p =~ s/^\tlink a6,#-?\d.*\n//;
665 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
666 # The above showed up in the asm code,
667 # so I added it here.
668 # I hope it's correct.
670 $p =~ s/^\tmovel d2,sp\@-\n//;
671 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
672 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
673 } elsif ($TargetPlatform =~ /^mips-/) {
674 # the .frame/.mask/.fmask that we use is the same
675 # as that produced by GCC for miniInterpret; this
676 # gives GDB some chance of figuring out what happened
677 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
678 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
679 $p =~ s/^\t\.(mask|fmask).*\n//g;
680 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
681 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
682 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
683 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
684 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
685 $p =~ s/__FRAME__/$FRAME/;
686 } elsif ($TargetPlatform =~ /^powerpc-/) {
687 $p =~ s/^\tmflr 0\n//;
688 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
689 $p =~ s/^\tst 0,\d+\(1\)\n//;
690 $p =~ s/^\tstu 1,-\d+\(1\)\n//;
692 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
695 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
696 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
698 # glue together what's left
700 $c =~ s/\n\t\n/\n/; # junk blank line
704 if ( $TargetPlatform =~ /^mips-/ ) {
705 # MIPS: first, this basic sequence may occur "--- END ---" or not
706 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
709 # toss all epilogue stuff; again, paranoidly
710 if ( $c =~ /--- END ---/ ) {
711 if (($r, $e) = split(/--- END ---/, $c)) {
712 if ($TargetPlatform =~ /^i386-/) {
714 $e =~ s/^\tpopl \%edi\n//;
715 $e =~ s/^\tpopl \%esi\n//;
716 $e =~ s/^\taddl \$\d+,\%esp\n//;
717 } elsif ($TargetPlatform =~ /^m68k-/) {
718 $e =~ s/^\tunlk a6\n//;
720 } elsif ($TargetPlatform =~ /^mips-/) {
721 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
722 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
723 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
724 $e =~ s/^\tj\t\$31\n//;
725 } elsif ($TargetPlatform =~ /^powerpc-/) {
726 $e =~ s/^\cal 1,\d+\(1\)\n//;
727 $e =~ s/^\tl \d+,\d+\(1\)\n//;
728 $e =~ s/^\tmtlr 0\n//;
731 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
733 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
734 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
736 # glue together what's left
738 $c =~ s/\n\t\n/\n/; # junk blank line
742 # On SPARCs, we don't do --- BEGIN/END ---, we just
743 # toss the register-windowing save/restore/ret* instructions
745 if ( $TargetPlatform =~ /^sparc-/ ) {
746 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
747 # throw away PROLOGUE comments
748 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
751 # On Alphas, the prologue mangling is done a little later (below)
753 # toss all calls to __DISCARD__
754 $c =~ s/^\t(call|jbsr|jal)\s+$TUS[@]?__DISCARD__\n//go;
756 # MIPS: that may leave some gratuitous asm macros around
757 # (no harm done; but we get rid of them to be tidier)
758 $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/
759 if $TargetPlatform =~ /^mips-/;
761 # toss stack adjustment after DoSparks
762 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
763 if $TargetPlatform =~ /^m68k-/; # this looks old...
765 if ( $TargetPlatform =~ /^alpha-/ &&
766 ! $magic_rdata_seen &&
767 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
768 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
769 $magic_rdata_seen = 1;
772 # pick some end-things and move them to the next chunk
774 # pin a funny end-thing on (for easier matching):
775 $c .= 'FUNNY#END#THING';
777 while ( $c =~ /$TMOVEDIRVS[@]?FUNNY#END#THING/o ) { # [@]? is a silly hack to avoid having to use curlies for T_PRE_APP
778 # (this SEGVs perl4 on alphas, you see)
781 if ( $i < ($numchks - 1)
782 && ( $to_move =~ /$TCOPYDIRVS/
783 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
784 $chk[$i + 1] = $to_move . $chk[$i + 1];
785 # otherwise they're tossed
788 $c =~ s/$TMOVEDIRVS[@]?FUNNY#END#THING/FUNNY#END#THING/o; # [@]? is a hack (see above)
791 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
793 # toss all prologue stuff, except for loading gp, and the ..ng address
794 if (($p, $r) = split(/^\t\.prologue/, $c)) {
795 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
796 $c = $keep . "..ng:\n";
798 print STDERR "malformed code block ($ent)?\n"
801 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
804 $c =~ s/FUNNY#END#THING//;
806 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
808 $chk[$i] = $c; # update w/ convenience copy
811 if ( $TargetPlatform =~ /^alpha-/ ) {
812 # print out the header stuff first
813 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
814 print OUTASM $chk[0];
816 } elsif ( $TargetPlatform =~ /^hppa/ ) {
817 print OUTASM $chk[0];
819 } elsif ( $TargetPlatform =~ /^mips-/ ) {
820 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
822 # get rid of horrible "<dollar>Revision: .*$" strings
823 local(@lines0) = split(/\n/, $chk[0]);
825 while ( $z <= $#lines0 ) {
826 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
829 while ( $z <= $#lines0 ) {
831 last if $lines0[$z] =~ /[,\t]0x0$/;
837 $chk[0] = join("\n", @lines0);
838 $chk[0] =~ s/\n\n+/\n/;
839 print OUTASM $chk[0];
842 # print out all the literal strings next
843 for ($i = 0; $i < $numchks; $i++) {
844 if ( $chkcat[$i] eq 'literal' ) {
845 print OUTASM $T_HDR_literal, $chk[$i];
846 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
848 $chkcat[$i] = 'DONE ALREADY';
852 # on the HPPA, print out all the bss next
853 if ( $TargetPlatform =~ /^hppa/ ) {
854 for ($i = 1; $i < $numchks; $i++) {
855 if ( $chkcat[$i] eq 'bss' ) {
856 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
857 print OUTASM $chk[$i];
859 $chkcat[$i] = 'DONE ALREADY';
864 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
865 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
867 next if $chkcat[$i] eq 'DONE ALREADY';
869 if ( $chkcat[$i] eq 'misc' ) {
870 if ($chk[$i] ne '') {
871 print OUTASM $T_HDR_misc;
872 if ($TargetPlatform =~ /^powerpc-/) {
873 $chksymb[$i] =~ s/://;
874 if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
875 || $chksymb[$i] =~ /^${T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
876 { print OUTASM "\t\.globl $chksymb[$i]\n\t\.globl \.$chksymb[$i]\n";
877 } else { print OUTASM "\t\.lglobl \.$chksymb[$i]\n"; };
878 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
879 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
880 else { $r = $chk[$i]; $printDS = 0; };
881 $chk[$i] = &mangle_powerpc_tailjump($r);
883 &print_doctored($chk[$i], 0);
884 if ($TargetPlatform =~ /^powerpc-/ && $printDS) {
885 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
886 print OUTASM "${p}TOC[tc0], 0\n";
890 } elsif ( $chkcat[$i] eq 'toss' ) {
891 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
893 } elsif ( $chkcat[$i] eq 'data' ) {
894 if ($chk[$i] ne '') {
895 print OUTASM $T_HDR_data;
896 print OUTASM $chk[$i];
899 } elsif ( $chkcat[$i] eq 'consist' ) {
900 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
901 local($consist) = "$1.$2.$3";
903 $consist =~ s/\//./g;
905 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
906 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
908 } elsif ( $TargetPlatform !~ /^(mips|powerpc)-/ ) { # we just don't try in those case (ToDo)
909 # on mips: consistency string is just a v
910 # horrible bunch of .bytes,
911 # which I am too lazy to sort out (WDP 95/05)
913 print STDERR "Couldn't grok consistency: ", $chk[$i];
916 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
917 # we can just re-constitute this one...
918 # NB: we emit _three_ underscores no matter what,
919 # so ghc-split doesn't have to care.
920 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
922 } elsif ( $chkcat[$i] eq 'closure'
923 || $chkcat[$i] eq 'infotbl'
924 || $chkcat[$i] eq 'slow'
925 || $chkcat[$i] eq 'fast' ) { # do them in that order
926 $symb = $chksymb[$i];
929 if ( defined($closurechk{$symb}) ) {
930 print OUTASM $T_HDR_closure;
931 print OUTASM $chk[$closurechk{$symb}];
932 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
936 if ( defined($infochk{$symb}) ) {
938 print OUTASM $T_HDR_info;
939 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
940 # entry code will be put here!
943 if ( $chk[$infochk{$symb}] =~ /$TDOTWORD[@]?\s+([A-Za-z0-9_]+_entry)$/o
944 && $1 ne "${T_US}${symb}_entry" ) {
945 print STDERR "!!! entry point???\n",$chk[$infochk{$symb}];
948 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
952 if ( defined($slowchk{$symb}) ) {
954 # teach it to drop through to the fast entry point:
955 $c = $chk[$slowchk{$symb}];
957 if ($TargetPlatform =~ /^powerpc-/) {
958 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
959 if ($symb =~ /^[_A-Z]/)
961 print OUTASM "\t\.globl ${chksymb[$i]}_entry\n";
962 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
963 print OUTASM "\.csect ${symb}_entry[DS]\n";
964 print OUTASM "${p}TOC[tc0], 0\n";
966 else { print OUTASM "\t\.lglobl \.${symb}_entry\n"; };
967 $c = &mangle_powerpc_tailjump($r);
970 if ( defined($fastchk{$symb}) ) {
971 if ( $TargetPlatform =~ /^alpha-/ ) {
972 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
973 } elsif ( $TargetPlatform =~ /^hppa/ ) {
974 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
975 } elsif ( $TargetPlatform =~ /^i386-/ ) {
976 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edx\n\tjmp \*\%edx\n//;
977 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%eax\n\tjmp \*\%eax\n//;
978 } elsif ( $TargetPlatform =~ /^mips-/ ) {
979 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
980 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
981 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
982 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
983 } elsif ( $TargetPlatform =~ /^powerpc-/ ) {
984 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
985 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
986 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
987 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
989 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
993 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
994 # On alphas, hppa: no very good way to look for "dangling"
995 # references to fast-entry point.
996 # (questionable re hppa and mips...)
997 print STDERR "still has jump to fast entry point:\n$c"
998 if $c =~ /$TUS[@]?$symb[@]?_fast/; # NB: paranoia
1001 print OUTASM $T_HDR_entry;
1003 &print_doctored($c, 1); # NB: the 1!!!
1005 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1009 if ( defined($fastchk{$symb}) ) {
1010 $c = $chk[$fastchk{$symb}];
1011 if ( ! defined($slowchk{$symb})
1012 # ToDo: the || clause can go once we're no longer
1013 # concerned about producing exactly the same output as before
1014 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1016 print OUTASM $T_HDR_fast;
1018 if ($TargetPlatform =~ /^powerpc-/) {
1019 local(@lbls) = split(/:/, $c);
1020 $fullname = $lbls[0];
1021 $fullname =~ s/$T_MOVE_DIRVS//g;
1022 if ( $fullname =~ /^[A-Z]/)
1023 { print OUTASM "\t\.globl \.${fullname}\n";
1025 print OUTASM "\t\.lglobl \.${fullname}\n";
1027 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1028 $c = &mangle_powerpc_tailjump($c);
1030 &print_doctored($c, 0);
1031 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1034 } elsif ( $chkcat[$i] eq 'vector'
1035 || $chkcat[$i] eq 'direct' ) { # do them in that order
1036 $symb = $chksymb[$i];
1039 if ( defined($vectorchk{$symb}) ) {
1040 print OUTASM $T_HDR_vector;
1041 if ($TargetPlatform =~ /^powerpc-/) {
1042 if ( $symb =~ /^[A-Z]/) {
1043 print OUTASM "\t\.globl \.vtbl_${symb}\n";
1044 print OUTASM "\t\.globl vtbl_${symb}\n";
1046 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1047 print OUTASM ".vtbl_${symb}:\n";
1048 print OUTASM $chk[$vectorchk{$symb}];
1050 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1052 # direct return code will be put here!
1053 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1057 if ( defined($directchk{$symb}) ) {
1058 print OUTASM $T_HDR_direct;
1059 if ($TargetPlatform =~ /^powerpc-/) {
1060 ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$directchk{$symb}]);
1061 &print_doctored($r, 0);
1062 print OUTASM "\.csect ${symb}DirectReturn[DS]\n";
1063 print OUTASM "${p}TOC[tc0], 0\n";
1065 &print_doctored($chk[$directchk{$symb}], 0);
1067 $chkcat[$directchk{$symb}] = 'DONE ALREADY';
1069 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1070 # Alphas: the commented nop is for the splitter, to ensure
1071 # that no module ends with a label as the very last
1072 # thing. (The linker will adjust the label to point
1073 # to the first code word of the next module linked in,
1074 # even if alignment constraints cause the label to move!)
1076 print OUTASM "\t# nop\n";
1079 } elsif ( $chkcat[$i] eq 'toc' ) {
1080 if ($chk[$i] ne '') {
1081 print OUTASM $T_HDR_literal;
1082 print OUTASM $chk[$i];
1086 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1090 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1092 if ($TargetPlatform =~ /^powerpc-/) {
1093 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1096 # print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1097 # if $TargetPlatform =~ /^powerpc-/;
1100 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1101 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1106 sub mash_hppa_prologue { # OK, epilogue, too
1109 # toss all prologue stuff
1110 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1112 # Lie about our .CALLINFO
1113 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1120 # toss all epilogue stuff
1121 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1123 # Sorry; we moved the _info stuff to the code segment.
1124 s/_info,DATA/_info,CODE/g;
1131 sub print_doctored {
1132 local($_, $need_fallthru_patch) = @_;
1134 if ( $TargetPlatform !~ /^i386-/
1135 || ! /^\t[a-z]/ ) { # no instructions in here, apparently
1139 # OK, must do some x86 **HACKING**
1141 local($entry_patch) = '';
1142 local($exit_patch) = '';
1143 local($call_entry_patch)= '';
1144 local($call_exit_patch) = '';
1146 #OLD: # first, convert calls to *very magic form*: (ToDo: document
1150 # call _?PerformGC_wrapper
1154 # call _?PerformGC_wrapper
1156 # The reason we do this now is to remove the apparent use of
1157 # %esp, which would throw off the "what patch code do we need"
1160 # Special macros in ghc/includes/COptWraps.lh, used in
1161 # ghc/runtime/CallWrap_C.lc, are required for this to work!
1164 s/^\tpushl \$(\d+)\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \$$1,\%eax\n\tcall ${T_DO_GC}\n/go;
1165 s/^\tpushl \%eax\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tcall ${T_DO_GC}\n/go;
1166 s/^\tpushl \%edx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%edx,\%eax\n\tcall ${T_DO_GC}\n/go;
1168 #= if ( $StolenX86Regs <= 4 ) { # %ecx is ordinary reg
1169 #= s/^\tpushl \%ecx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%ecx,\%eax\n\tcall ${T_DO_GC}\n/go;
1172 # gotta watch out for weird instructions that
1173 # invisibly smash various regs:
1174 # rep* %ecx used for counting
1175 # scas* %edi used for destination index
1176 # cmps* %e[sd]i used for indices
1177 # loop* %ecx used for counting
1182 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1184 # * GCC used an "STG reg" for its own purposes
1186 # * some secret uses of machine reg, requiring STG reg
1187 # to be saved/restored
1189 # The most dangerous "GCC uses" of an "STG reg" are when
1190 # the reg holds the target of a jmp -- it's tricky to
1191 # insert the patch-up code before we get to the target!
1192 # So here we change the jmps:
1194 # --------------------------------------------------------
1195 # it can happen that we have jumps of the form...
1196 # jmp *<something involving %esp>
1198 # jmp <something involving another naughty register...>
1200 # a reasonably-common case is:
1202 # movl $_blah,<bad-reg>
1205 # which is easily fixed as:
1207 # sigh! try to hack around it...
1210 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1211 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1212 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1213 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1214 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1215 if /(jmp|call) .*\%esi/;
1217 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1218 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1219 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1220 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1221 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1222 if /(jmp|call) .*\%edi/;
1224 #= if ($StolenX86Regs <= 4 ) { # spurious uses of ecx?
1225 #= s/^\tmovl (.*),\%ecx\n\tjmp \*%ecx\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1226 #= s/^\tjmp \*(-?\d*)\((.*\%ecx.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1227 #= s/^\tjmp \*\%ecx\n/\tmovl \%ecx,\%eax\n\tjmp \*\%eax\n/g;
1228 #= die "$Pgm: (mangler) still have jump involving \%ecx!\n$_"
1229 #= if /(jmp|call) .*\%ecx/;
1232 # OK, now we can decide what our patch-up code is going to
1234 if ( $StolenX86Regs <= 2
1235 && ( /32\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1236 $entry_patch .= "\tmovl \%esi,32(\%ebx)\n";
1237 $exit_patch .= "\tmovl 32(\%ebx),\%esi\n";
1238 # nothing for call_{entry,exit} because %esi is callee-save
1240 if ( $StolenX86Regs <= 3
1241 && ( /64\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # SpA (edi)
1242 $entry_patch .= "\tmovl \%edi,64(\%ebx)\n";
1243 $exit_patch .= "\tmovl 64(\%ebx),\%edi\n";
1244 # nothing for call_{entry,exit} because %edi is callee-save
1246 #= if ( $StolenX86Regs <= 4
1247 #= && ( /80\(\%ebx\)/ || /\%ecx/ || /^\t(rep|loop)/ ) ) { # Hp (ecx)
1248 #= $entry_patch .= "\tmovl \%ecx,80(\%ebx)\n";
1249 #= $exit_patch .= "\tmovl 80(\%ebx),\%ecx\n";
1251 #= $call_exit_patch .= "\tmovl \%ecx,108(\%ebx)\n";
1252 #= $call_entry_patch .= "\tmovl 108(\%ebx),\%ecx\n";
1253 #= # I have a really bad feeling about this if we ever
1254 #= # have a nested call...
1255 #= # NB: should just hide it somewhere in the C stack.
1257 # --------------------------------------------------------
1258 # next, here we go with non-%esp patching!
1260 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1261 s/^(\tcall .*\n(\taddl \$\d+,\%esp\n)?)/$call_exit_patch$1$call_entry_patch/g; # _all_ calls
1263 # fix _all_ non-local jumps:
1265 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1266 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1268 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1270 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1271 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1273 # fix post-PerformGC wrapper (re-)entries ???
1275 if ($StolenX86Regs == 2 ) {
1276 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1277 if /^\t(jmp|call) .*\%e(si|di)/;
1278 #= die "ARGH! Jump uses \%esi, \%edi, or \%ecx with -monly-2-regs:\n$_"
1279 #= if /^\t(jmp|call) .*\%e(si|di|cx)/;
1280 } elsif ($StolenX86Regs == 3 ) {
1281 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1282 if /^\t(jmp|call) .*\%edi/;
1283 #= die "ARGH! Jump uses \%edi or \%ecx with -monly-3-regs:\n$_"
1284 #= if /^\t(jmp|call) .*\%e(di|cx)/;
1285 #= } elsif ($StolenX86Regs == 4 ) {
1286 #= die "ARGH! Jump uses \%ecx with -monly-4-regs:\n$_"
1287 #= if /^\t(jmp|call) .*\%ecx/;
1290 # final peephole fixes
1292 s/^\tmovl \%eax,36\(\%ebx\)\n\tjmp \*36\(\%ebx\)\n/\tmovl \%eax,36\(\%ebx\)\n\tjmp \*\%eax\n/;
1293 # the short form may tickle perl bug:
1294 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1295 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1296 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1297 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1298 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1300 # Hacks to eliminate some reloads of Hp. Worth about 5% code size.
1301 # We could do much better than this, but at least it catches about
1302 # half of the unnecessary reloads.
1303 # Note that these will stop working if either:
1304 # (i) the offset of Hp from BaseReg changes from 80, or
1305 # (ii) the register assignment of BaseReg changes from %ebx
1307 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;
1309 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;
1311 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;
1312 s/^\tmovl 80\(\%ebx\),\%eax((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[bcd]x)))+)\n\tmovl 80\(\%ebx\),\%eax/\tmovl 80\(\%ebx\),\%eax$1/g;
1314 # --------------------------------------------------------
1315 # that's it -- print it
1317 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1321 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1322 print OUTASM $exit_patch;
1323 # ToDo: make it not print if there is a "jmp" at the end
1329 sub init_FUNNY_THINGS {
1330 %KNOWN_FUNNY_THING = (
1331 "${T_US}CheckHeapCode${T_POST_LBL}", 1,
1332 "${T_US}CommonUnderflow${T_POST_LBL}", 1,
1333 "${T_US}Continue${T_POST_LBL}", 1,
1334 "${T_US}EnterNodeCode${T_POST_LBL}", 1,
1335 "${T_US}ErrorIO_call_count${T_POST_LBL}", 1,
1336 "${T_US}ErrorIO_innards${T_POST_LBL}", 1,
1337 "${T_US}IndUpdRetDir${T_POST_LBL}", 1,
1338 "${T_US}IndUpdRetV0${T_POST_LBL}", 1,
1339 "${T_US}IndUpdRetV1${T_POST_LBL}", 1,
1340 "${T_US}IndUpdRetV2${T_POST_LBL}", 1,
1341 "${T_US}IndUpdRetV3${T_POST_LBL}", 1,
1342 "${T_US}IndUpdRetV4${T_POST_LBL}", 1,
1343 "${T_US}IndUpdRetV5${T_POST_LBL}", 1,
1344 "${T_US}IndUpdRetV6${T_POST_LBL}", 1,
1345 "${T_US}IndUpdRetV7${T_POST_LBL}", 1,
1346 "${T_US}PrimUnderflow${T_POST_LBL}", 1,
1347 "${T_US}StackUnderflowEnterNode${T_POST_LBL}", 1,
1348 "${T_US}StdErrorCode${T_POST_LBL}", 1,
1349 "${T_US}UnderflowVect0${T_POST_LBL}", 1,
1350 "${T_US}UnderflowVect1${T_POST_LBL}", 1,
1351 "${T_US}UnderflowVect2${T_POST_LBL}", 1,
1352 "${T_US}UnderflowVect3${T_POST_LBL}", 1,
1353 "${T_US}UnderflowVect4${T_POST_LBL}", 1,
1354 "${T_US}UnderflowVect5${T_POST_LBL}", 1,
1355 "${T_US}UnderflowVect6${T_POST_LBL}", 1,
1356 "${T_US}UnderflowVect7${T_POST_LBL}", 1,
1357 "${T_US}UpdErr${T_POST_LBL}", 1,
1358 "${T_US}UpdatePAP${T_POST_LBL}", 1,
1359 "${T_US}WorldStateToken${T_POST_LBL}", 1,
1360 "${T_US}_Enter_Internal${T_POST_LBL}", 1,
1361 "${T_US}_PRMarking_MarkNextAStack${T_POST_LBL}", 1,
1362 "${T_US}_PRMarking_MarkNextBStack${T_POST_LBL}", 1,
1363 "${T_US}_PRMarking_MarkNextCAF${T_POST_LBL}", 1,
1364 "${T_US}_PRMarking_MarkNextGA${T_POST_LBL}", 1,
1365 "${T_US}_PRMarking_MarkNextRoot${T_POST_LBL}", 1,
1366 "${T_US}_PRMarking_MarkNextSpark${T_POST_LBL}", 1,
1367 "${T_US}_PRMarking_MarkNextEvent${T_POST_LBL}", 1,
1368 "${T_US}_PRMarking_MarkNextClosureInFetchBuffer${T_POST_LBL}", 1,
1369 "${T_US}_Scavenge_Forward_Ref${T_POST_LBL}", 1,
1370 "${T_US}__std_entry_error__${T_POST_LBL}", 1,
1371 "${T_US}_startMarkWorld${T_POST_LBL}", 1,
1372 "${T_US}resumeThread${T_POST_LBL}", 1,
1373 "${T_US}startCcRegisteringWorld${T_POST_LBL}", 1,
1374 "${T_US}startEnterFloat${T_POST_LBL}", 1,
1375 "${T_US}startEnterInt${T_POST_LBL}", 1,
1376 "${T_US}startPerformIO${T_POST_LBL}", 1,
1377 "${T_US}startStgWorld${T_POST_LBL}", 1,
1378 "${T_US}stopPerformIO${T_POST_LBL}", 1
1383 The following table reversal is used for both info tables and return
1384 vectors. In both cases, we remove the first entry from the table,
1385 reverse the table, put the label at the end, and paste some code
1386 (that which is normally referred to by the first entry in the table)
1387 right after the table itself. (The code pasting is done elsewhere.)
1391 local($symb, $tbl, $discard1) = @_;
1393 local($before) = '';
1395 local(@imports) = (); # hppa only
1398 local(@lines) = split(/\n/, $tbl);
1399 local($i, $j); #local ($i, $extra, $words_to_pad, $j);
1401 # see comment in mangleAsm as to why this silliness is needed.
1402 local($TDOTWORD) = ${T_DOT_WORD};
1403 local($TDOTGLOBAL) = ${T_DOT_GLOBAL};
1404 local($TUS) = ${T_US};
1405 local($TPOSTLBL) = ${T_POST_LBL};
1407 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t$TDOTWORD\s+/o; $i++) {
1408 $label .= $lines[$i] . "\n",
1409 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info$TPOSTLBL[@]?$/o
1410 || $lines[$i] =~ /$TDOTGLOBAL/o
1411 || $lines[$i] =~ /^$TUS[@]?vtbl_\S+$TPOSTLBL[@]?$/o;
1413 $before .= $lines[$i] . "\n"; # otherwise...
1416 if ( $TargetPlatform !~ /^hppa/ ) {
1417 for ( ; $i <= $#lines && $lines[$i] =~ /^\t$TDOTWORD\s+/o; $i++) {
1418 push(@words, $lines[$i]);
1420 } else { # hppa weirdness
1421 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1422 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1423 push(@imports, $lines[$i]);
1425 # We don't use HP's ``function pointers''
1426 # We just use labels in code space, like normal people
1427 $lines[$i] =~ s/P%//;
1428 push(@words, $lines[$i]);
1433 # now throw away the first word (entry code):
1434 shift(@words) if $discard1;
1436 # Padding removed to reduce code size and improve performance on Pentiums.
1438 # for 486-cache-friendliness, we want our tables aligned
1439 # on 16-byte boundaries (.align 4). Let's pad:
1440 # $extra = ($#words + 1) % 4;
1441 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1442 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1444 for (; $i <= $#lines; $i++) {
1445 $after .= $lines[$i] . "\n";
1448 # Alphas:If we have anonymous text (not part of a procedure), the
1449 # linker may complain about missing exception information. Bleh.
1450 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1451 $before = "\t.ent $1\n" . $before;
1452 $after .= "\t.end $1\n";
1456 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1457 . join("\n", (reverse @words)) . "\n"
1460 # print STDERR "before=$before\n";
1461 # print STDERR "label=$label\n";
1462 # print STDERR "words=",(reverse @words),"\n";
1463 # print STDERR "after=$after\n";
1470 sub mini_mangle_asm_i386 {
1471 local($in_asmf, $out_asmf) = @_;
1473 &init_TARGET_STUFF();
1475 # see mangleAsm comment
1476 local($TUS) = ${T_US};
1477 local($TPOSTLBL)=${T_POST_LBL};
1479 open(INASM, "< $in_asmf")
1480 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1481 open(OUTASM,"> $out_asmf")
1482 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1488 /^$TUS[@]?(PerformGC|StackOverflow|Yield|PerformReschedule)_wrapper$TPOSTLBL\n/o;
1489 print OUTASM "\tmovl \%esp, ${T_US}__temp_esp\n";
1490 print OUTASM "\tmovl \%eax, ${T_US}__temp_eax\n";
1494 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1495 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1499 The HP is a major nuisance. The threaded code mangler moved info
1500 tables from data space to code space, but unthreaded code in the RTS
1501 still has references to info tables in data space. Since the HP
1502 linker is very precise about where symbols live, we need to patch the
1503 references in the unthreaded RTS as well.
1506 sub mini_mangle_asm_hppa {
1507 local($in_asmf, $out_asmf) = @_;
1509 open(INASM, "< $in_asmf")
1510 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1511 open(OUTASM,"> $out_asmf")
1512 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1515 s/_info,DATA/_info,CODE/; # Move _info references to code space
1521 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1522 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1528 sub mini_mangle_asm_powerpc {
1529 local($in_asmf, $out_asmf) = @_;
1531 open(INASM, "< $in_asmf")
1532 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1533 open(OUTASM,"> $out_asmf")
1534 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1537 s/long _PRStart/long ._PRStart/;
1538 s/long _PRIn_/long ._PRIn_/;
1539 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1540 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1541 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1542 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1543 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1548 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1549 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1552 sub mangle_powerpc_tailjump {
1554 local($maybe_more) = 1;
1555 while (($c =~ /\tl \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1558 $lcsymb =~ s/(.*\n)*\tl \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1559 # the checks for r1 and r2 are mostly paranoia...
1561 $r1 =~ s/(.*\n)*\tl (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1563 $r2 =~ s/(.*\n)*\tl \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1566 $c =~ s/((.*\n)*)\tl \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1572 # make "require"r happy...