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_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
58 $T_CONST_LBL = '^\$C(\d+):$'; # regexp for what such a lbl looks like
61 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\#.*|\.(file|loc)\s+\S+\s+\S+|\.text|\.r?data)\n)';
62 $T_COPY_DIRVS = '^\s*(\#|\.(file|globl|ent|loc))';
64 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
65 $T_DOT_WORD = '\.quad';
66 $T_DOT_GLOBAL = '^\t\.globl';
67 $T_HDR_literal = "\.rdata\n\t\.align 3\n";
68 $T_HDR_misc = "\.text\n\t\.align 3\n";
69 $T_HDR_data = "\.data\n\t\.align 3\n";
70 $T_HDR_consist = "\.text\n";
71 $T_HDR_closure = "\.data\n\t\.align 3\n";
72 $T_HDR_srt = "\.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_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
85 $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like
88 $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)';
89 $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)';
91 $T_hsc_cc_PAT = '\.STRING.*\)(hsc|cc) (.*)\\\\x09(.*)\\\\x00"';
92 $T_DOT_WORD = '\.(blockz|word|half|byte)';
93 $T_DOT_GLOBAL = '^\s+\.EXPORT';
94 $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
95 $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
96 $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
97 $T_HDR_consist = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
98 $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
99 $T_HDR_srt = "\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 ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd2|nextstep3|cygwin32|mingw32)$/ ) {
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_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
113 $T_CONST_LBL = '^LC(\d+):$';
115 $T_X86_PRE_LLBL_PAT = 'L';
116 $T_X86_PRE_LLBL = 'L';
117 $T_X86_BADJMP = '^\tjmp [^L\*]';
119 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*)\n)';
120 $T_COPY_DIRVS = '\.(globl|stab)';
121 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
122 $T_DOT_WORD = '\.(long|word|value|byte|space)';
123 $T_DOT_GLOBAL = '\.globl';
124 $T_HDR_literal = "\.text\n\t\.align 2\n";
125 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
126 $T_HDR_data = "\.data\n\t\.align 2\n";
127 $T_HDR_consist = "\.text\n";
128 $T_HDR_closure = "\.data\n\t\.align 2\n";
129 $T_HDR_closure = "\.data\n\t\.align 2\n\t.long 0\n" if ( $TargetPlatform =~ /.*-mingw32$/ );
130 $T_HDR_srt = "\.data\n\t\.align 2\n";
131 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
132 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
133 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
134 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
135 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
137 #--------------------------------------------------------#
138 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|freebsd3)$/ ) {
140 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
141 $T_US = ''; # _ if symbols have an underscore on the front
142 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
143 ($TargetPlatform =~ /-(linux|freebsd3)$/) ? '#' : '/' ;
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*(\.(p2)?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 if ( $TargetPlatform =~ /freebsd3/ ) {
154 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
156 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
159 $T_DOT_WORD = '\.(long|value|byte|zero)';
160 $T_DOT_GLOBAL = '\.globl';
161 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
162 $T_HDR_misc = "\.text\n\t\.align 4\n";
163 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
164 $T_HDR_consist = "\.text\n";
165 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
166 $T_HDR_srt = "\.data\n\t\.align 4\n"; # ToDo: change align?
167 $T_HDR_info = "\.text\n\t\.align 4\n"; # NB: requires padding
168 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
169 $T_HDR_fast = "\.text\n\t\.align 4\n";
170 $T_HDR_vector = "\.text\n\t\.align 4\n"; # NB: requires padding
171 $T_HDR_direct = "\.text\n\t\.align 4\n";
173 #--------------------------------------------------------#
174 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
176 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
177 $T_US = '_'; # _ if symbols have an underscore on the front
178 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
179 $T_CONST_LBL = '^LC(\d+):$';
182 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
183 $T_COPY_DIRVS = '\.(globl|proc|stab)';
184 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
186 $T_DOT_WORD = '\.long';
187 $T_DOT_GLOBAL = '\.globl';
188 $T_HDR_literal = "\.text\n\t\.even\n";
189 $T_HDR_misc = "\.text\n\t\.even\n";
190 $T_HDR_data = "\.data\n\t\.even\n";
191 $T_HDR_consist = "\.text\n";
192 $T_HDR_closure = "\.data\n\t\.even\n";
193 $T_HDR_srt = "\.data\n\t\.even\n";
194 $T_HDR_info = "\.text\n\t\.even\n";
195 $T_HDR_entry = "\.text\n\t\.even\n";
196 $T_HDR_fast = "\.text\n\t\.even\n";
197 $T_HDR_vector = "\.text\n\t\.even\n";
198 $T_HDR_direct = "\.text\n\t\.even\n";
200 #--------------------------------------------------------#
201 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
203 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
204 $T_US = ''; # _ if symbols have an underscore on the front
205 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
206 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
209 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
210 $T_COPY_DIRVS = '\.(globl|ent)';
212 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
213 $T_DOT_WORD = '\.word';
214 $T_DOT_GLOBAL = '^\t\.globl';
215 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
216 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
217 $T_HDR_data = "\t\.data\n\t\.align 2\n";
218 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
219 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
220 $T_HDR_srt = "\t\.data\n\t\.align 2\n";
221 $T_HDR_info = "\t\.text\n\t\.align 2\n";
222 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
223 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
224 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
225 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
227 #--------------------------------------------------------#
228 } elsif ( $TargetPlatform =~ /^powerpc-.*|^rs6000-.*/ ) {
230 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
231 $T_US = ''; # _ if symbols have an underscore on the front
232 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
233 $T_CONST_LBL = 'NOT APPLICABLE'; # regexp for what such a lbl looks like
236 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
237 $T_COPY_DIRVS = '\.(l?globl)';
239 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
240 $T_DOT_WORD = '\.long';
241 $T_DOT_GLOBAL = '\.globl';
242 $T_HDR_toc = "\.toc\n";
243 $T_HDR_literal = "\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
244 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
245 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
246 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
247 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
248 $T_HDR_srt = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
249 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
250 $T_HDR_entry = "# entry\n\.csect \.text[PR]\n\t\.align 2\n";
251 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
252 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
253 $T_HDR_direct = "# direct\n";
255 #--------------------------------------------------------#
256 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
258 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
259 $T_US = ''; # _ if symbols have an underscore on the front
260 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
261 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
264 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
265 $T_COPY_DIRVS = '\.(global|proc|stab)';
267 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
268 $T_DOT_WORD = '\.(word|byte|half|skip)';
269 $T_DOT_GLOBAL = '^\t\.global';
270 $T_HDR_literal = "\.text\n\t\.align 8\n";
271 $T_HDR_misc = "\.text\n\t\.align 4\n";
272 $T_HDR_data = "\.data\n\t\.align 8\n";
273 $T_HDR_consist = "\.text\n";
274 $T_HDR_closure = "\.data\n\t\.align 4\n";
275 $T_HDR_srt = "\.data\n\t\.align 4\n";
276 $T_HDR_info = "\.text\n\t\.align 4\n";
277 $T_HDR_entry = "\.text\n\t\.align 4\n";
278 $T_HDR_fast = "\.text\n\t\.align 4\n";
279 $T_HDR_vector = "\.text\n\t\.align 4\n";
280 $T_HDR_direct = "\.text\n\t\.align 4\n";
282 #--------------------------------------------------------#
283 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
285 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
286 $T_US = '_'; # _ if symbols have an underscore on the front
287 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
288 $T_CONST_LBL = '^LC(\d+):$';
291 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
292 $T_COPY_DIRVS = '\.(global|proc|stab)';
293 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
295 $T_DOT_WORD = '\.word';
296 $T_DOT_GLOBAL = '^\t\.global';
297 $T_HDR_literal = "\.text\n\t\.align 8\n";
298 $T_HDR_misc = "\.text\n\t\.align 4\n";
299 $T_HDR_data = "\.data\n\t\.align 8\n";
300 $T_HDR_consist = "\.text\n";
301 $T_HDR_closure = "\.data\n\t\.align 4\n";
302 $T_HDR_srt = "\.data\n\t\.align 4\n";
303 $T_HDR_info = "\.text\n\t\.align 4\n";
304 $T_HDR_entry = "\.text\n\t\.align 4\n";
305 $T_HDR_fast = "\.text\n\t\.align 4\n";
306 $T_HDR_vector = "\.text\n\t\.align 4\n";
307 $T_HDR_direct = "\.text\n\t\.align 4\n";
309 #--------------------------------------------------------#
311 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
316 print STDERR "T_STABBY: $T_STABBY\n";
317 print STDERR "T_US: $T_US\n";
318 print STDERR "T_PRE_APP: $T_PRE_APP\n";
319 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
320 print STDERR "T_POST_LBL: $T_POST_LBL\n";
321 if ( $TargetPlatform =~ /^i386-/ ) {
322 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
323 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
324 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
326 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
327 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
328 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
329 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
330 print STDERR "T_HDR_literal: $T_HDR_literal\n";
331 print STDERR "T_HDR_misc: $T_HDR_misc\n";
332 print STDERR "T_HDR_data: $T_HDR_data\n";
333 print STDERR "T_HDR_consist: $T_HDR_consist\n";
334 print STDERR "T_HDR_closure: $T_HDR_closure\n";
335 print STDERR "T_HDR_info: $T_HDR_info\n";
336 print STDERR "T_HDR_entry: $T_HDR_entry\n";
337 print STDERR "T_HDR_fast: $T_HDR_fast\n";
338 print STDERR "T_HDR_vector: $T_HDR_vector\n";
339 print STDERR "T_HDR_direct: $T_HDR_direct\n";
345 %************************************************************************
347 \subsection{Mangle away}
349 %************************************************************************
353 local($in_asmf, $out_asmf) = @_;
355 # multi-line regexp matching:
360 &init_TARGET_STUFF();
361 &init_FUNNY_THINGS();
363 # perl4 on alphas SEGVs when give ${foo} substitutions in patterns.
364 # To avoid them we declare some locals that allows to avoid using curlies.
365 local($TUS) = ${T_US};
366 local($TPOSTLBL) = ${T_POST_LBL};
367 local($TMOVEDIRVS) = ${T_MOVE_DIRVS};
368 local($TPREAPP) = ${T_PRE_APP};
369 local($TCOPYDIRVS) = ${T_COPY_DIRVS};
370 local($TDOTWORD) = ${T_DOT_WORD};
372 open(INASM, "< $in_asmf")
373 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
374 open(OUTASM,"> $out_asmf")
375 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
377 # read whole file, divide into "chunks":
378 # record some info about what we've found...
380 @chk = (); # contents of the chunk
381 $numchks = 0; # number of them
382 @chkcat = (); # what category of thing in each chunk
383 @chksymb = (); # what symbol(base) is defined in this chunk
384 %slowchk = (); # ditto, its regular "slow" entry code
385 %fastchk = (); # ditto, fast entry code
386 %closurechk = (); # ditto, the (static) closure
387 %srtchk = (); # ditto, its SRT (for top-level things)
388 %infochk = (); # given a symbol base, say what chunk its info tbl is in
389 %vectorchk = (); # ditto, return vector table
390 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
392 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
395 next if $T_STABBY && /^\.stab.*$TUS[@]?__stg_split_marker/o;
396 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
397 next if /^\t\.def.*endef$/;
398 next if /$TPREAPP(NO_)?APP/o;
399 next if /^;/ && $TargetPlatform =~ /^hppa/;
401 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc|rs6000)-/;
403 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-|^rs6000-/;
405 if ( $TargetPlatform =~ /^mips-/
406 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
407 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
409 # As a temporary solution for compiling "foreign export" declarations,
410 # we use global variables to pass arguments from C to STG land.
411 # These declarations live in the .hc file and not in the generated C
412 # stub file, so we let them pass through here.
413 } elsif ( /^\t\.comm\t__fexp_.*$/ ) {
415 $chkcat[$i] = 'data';
418 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
419 # duplicated from the bottom
423 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
424 # Alphas: Local labels not to be confused with new chunks
427 # NB: all the rest start with a non-space
429 } elsif ( $TargetPlatform =~ /^mips-/
430 && /^\d+:/ ) { # a funny-looking very-local label
433 } elsif ( /$T_CONST_LBL/o ) {
435 $chkcat[$i] = 'literal';
438 } elsif ( /^$TUS[@]?__stg_split_marker(\d+)$TPOSTLBL[@]?$/o ) {
440 $chkcat[$i] = 'splitmarker';
443 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_info$TPOSTLBL[@]?$/o ) {
446 $chkcat[$i] = 'infotbl';
447 $chksymb[$i] = $symb;
449 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
451 $infochk{$symb} = $i;
453 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_(entry|ret)$TPOSTLBL[@]?$/o ) {
455 $chkcat[$i] = 'slow';
460 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_fast\d*$TPOSTLBL[@]?$/o ) {
462 $chkcat[$i] = 'fast';
467 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_closure$TPOSTLBL[@]?$/o ) {
469 $chkcat[$i] = 'closure';
472 $closurechk{$1} = $i;
474 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_srt$TPOSTLBL[@]?$/o ) {
481 } elsif ( /^$TUS[@]?ghc.*c_ID$TPOSTLBL/o ) {
483 $chkcat[$i] = 'consist';
485 } elsif ( /^($TUS[@]?__gnu_compiled_c|gcc2_compiled\.)$TPOSTLBL/o ) {
488 } elsif ( /^$TUS[A-Za-z0-9_]+\.\d+$TPOSTLBL[@]?$/o
489 || /^$TUS[@]?.*_CAT$TPOSTLBL[@]?$/o # PROF: _entryname_CAT
490 || /^$TUS[@]?CC_.*_struct$TPOSTLBL[@]?$/o # PROF: _CC_ccident_struct
491 || /^$TUS[@]?.*_done$TPOSTLBL[@]?$/o # PROF: _module_done
492 || /^$TUS[@]?_module_registered$TPOSTLBL[@]?$/o # PROF: _module_registered
495 $chkcat[$i] = 'data';
498 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
503 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^LC\.\.([0-9]+)/ ) {
508 } elsif ( /^$TUS[@]?CC(S)?_.*$/ ) {
509 # all CC_ symbols go in the data section...
511 $chkcat[$i] = 'data';
514 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_(alt|dflt)$TPOSTLBL[@]?$/o ) {
516 $chkcat[$i] = 'misc';
519 #$chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-|^rs6000-/) ; #rm andre
521 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_vtbl$TPOSTLBL[@]?$/o ) {
523 $chkcat[$i] = 'vector';
528 # As a temporary solution for compiling "foreign export" declarations,
529 # we use global variables to pass arguments from C to STG land.
530 # These declarations live in the .hc file and not in the generated C
531 # stub file, so we let them pass through here.
532 } elsif ( /^[\t ]+\.comm[\t ]+__fexp_.*$/ ) {
534 $chkcat[$i] = 'data';
537 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
538 && /^(_uname|uname|stat|fstat):/ ) {
539 # for some utterly bizarre reason, this platform
540 # likes to drop little local C routines with these names
541 # into each and every .o file that #includes the
542 # relevant system .h file. Yuck. We just don't
543 # tolerate them in .hc files (which we are processing
544 # here). If you need to call one of these things from
545 # Haskell, make a call to your own C wrapper, then
546 # put that C wrapper (which calls one of these) in a
547 # plain .c file. WDP 95/12
549 $chkcat[$i] = 'toss';
552 } elsif ( /^$TUS[@]?[A-Za-z0-9_]/o
553 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
555 && ( $TargetPlatform !~ /^powerpc|^rs6000/ # ditto
556 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
559 print "Funny global thing?: $_"
560 unless $KNOWN_FUNNY_THING{$thing}
561 || /^$TUS[@]?stg_.*$TPOSTLBL[@]?$/o # RTS internals
562 || /^$TUS[@]__fexp_.*$TPOSTLBL$/o # foreign export
563 || /^$TUS[@]?_reg.*$TPOSTLBL$/o # PROF: __reg<module>
564 || /^$TUS[@]?.*_btm$TPOSTLBL$/o # large bitmaps
565 || /^$TUS[@]?.*_closure_tbl$TPOSTLBL$/o; # closure tables
567 $chkcat[$i] = 'misc';
568 if ($TargetPlatform =~ /^powerpc-|^rs6000-/)
569 { $chksymb[$i] = $thing; }
570 else { $chksymb[$i] = ''; };
572 } else { # simple line (duplicated at the top)
577 $numchks = $#chk + 1;
579 # the division into chunks is imperfect;
580 # we throw some things over the fence into the next
583 # also, there are things we would like to know
584 # about the whole module before we start spitting
587 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
589 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
591 # Alphas: NB: we start meddling at chunk 1, not chunk 0
592 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
593 # spits a ".quad 0" in after the v first ".rdata"; we
594 # detect this special case (tossing the ".quad 0")!
595 local($magic_rdata_seen) = 0;
597 # HPPAs, MIPSen: also start medding at chunk 1
599 if ($TargetPlatform =~ /^powerpc|^rs6000/) {
600 print OUTASM $T_HDR_toc; # yes, we have to put a .toc
601 # in the beginning of every file!
602 %tocequiv = (); # maps toc symbol number to toc symbol
603 %revtocequiv = (); # maps toc symbol to toc symbol number
604 for ($i = 1; $i < $numchks; $i++) {
605 $chk[$i] =~ s/\[RW\]//g;
606 $chk[$i] =~ s/\[DS\]//g;
607 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
609 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
610 #ToDo: instead of all these changes, just fix mangle_powerpc_tailjump and delete/ignore these tocs?
611 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
612 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
613 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
614 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
615 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(alt_\S+)/\t\.tc \1\[TC\],\.\2/;
616 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
618 $tocnumber = $chksymb[$i];
620 $tocsymb =~ s/^LC\.\.\d+:\n//;
621 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
622 $tocequiv{$tocnumber} = $tocsymb;
624 } elsif ( $chkcat[$i] eq 'toc' && $chk[$i] =~ /\.byte/ ) {
625 $chkcat[$i] = 'literal';
630 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
631 $c = $chk[$i]; # convenience copy
633 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
635 # toss all prologue stuff; HPPA is pretty weird
637 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
639 # be slightly paranoid to make sure there's
640 # nothing surprising in there
641 if ( $c =~ /--- BEGIN ---/ ) {
642 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
644 if ($TargetPlatform =~ /^i386-/) {
645 $p =~ s/^\tpushl \%edi\n//;
646 $p =~ s/^\tpushl \%esi\n//;
647 $p =~ s/^\tsubl \$\d+,\%esp\n//;
648 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
649 } elsif ($TargetPlatform =~ /^m68k-/) {
650 $p =~ s/^\tlink a6,#-?\d.*\n//;
651 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
652 # The above showed up in the asm code,
653 # so I added it here.
654 # I hope it's correct.
656 $p =~ s/^\tmovel d2,sp\@-\n//;
657 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
658 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
659 } elsif ($TargetPlatform =~ /^mips-/) {
660 # the .frame/.mask/.fmask that we use is the same
661 # as that produced by GCC for miniInterpret; this
662 # gives GDB some chance of figuring out what happened
663 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
664 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
665 $p =~ s/^\t\.(mask|fmask).*\n//g;
666 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
667 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
668 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
669 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
670 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
671 $p =~ s/__FRAME__/$FRAME/;
672 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000/) {
673 $p =~ s/^\tmflr 0\n//;
674 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
675 $p =~ s/^\tstw? 0,\d+\(1\)\n//g;
676 $p =~ s/^\tstw? 1,\d+\(1\)\n//g; #mc
677 $p =~ s/^\tlw?z 0,0\(1\)\n//g; #mc
678 $p =~ s/^\tstw?u 1,-\d+\(1\)\n//;
679 $p =~ s/^\tstw? \d+,-\d+\(1\)\n//g;
680 $p =~ s/^\tstfd \d+,-\d+\(1\)\n//g;
682 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
685 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
686 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
688 # glue together what's left
690 $c =~ s/\n\t\n/\n/; # junk blank line
694 if ( $TargetPlatform =~ /^mips-/ ) {
695 # MIPS: first, this basic sequence may occur "--- END ---" or not
696 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
699 # toss all epilogue stuff; again, paranoidly
700 if ( $c =~ /--- END ---/ ) {
701 if (($r, $e) = split(/--- END ---/, $c)) {
702 if ($TargetPlatform =~ /^i386-/) {
704 $e =~ s/^\tpopl \%edi\n//;
705 $e =~ s/^\tpopl \%esi\n//;
706 $e =~ s/^\tpopl \%ecx\n//;
707 $e =~ s/^\taddl \$\d+,\%esp\n//;
708 } elsif ($TargetPlatform =~ /^m68k-/) {
709 $e =~ s/^\tunlk a6\n//;
711 } elsif ($TargetPlatform =~ /^mips-/) {
712 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
713 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
714 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
715 $e =~ s/^\tj\t\$31\n//;
716 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
717 $e =~ s/^\taddi 1,1,\d+\n//;
718 $e =~ s/^\tcal 1,\d+\(1\)\n//;
719 $e =~ s/^\tlw?z? \d+,\d+\(1\)\n//;
720 $e =~ s/^\tmtlr 0\n//;
723 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
725 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
726 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
728 # glue together what's left
730 $c =~ s/\n\t\n/\n/; # junk blank line
734 # On SPARCs, we don't do --- BEGIN/END ---, we just
735 # toss the register-windowing save/restore/ret* instructions
737 if ( $TargetPlatform =~ /^sparc-/ ) {
738 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
739 # throw away PROLOGUE comments
740 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
743 # On Alphas, the prologue mangling is done a little later (below)
745 # toss all calls to __DISCARD__
746 $c =~ s/^\t(call|jbsr|jal)\s+$TUS[@]?__DISCARD__\n//go;
748 # MIPS: that may leave some gratuitous asm macros around
749 # (no harm done; but we get rid of them to be tidier)
750 $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/
751 if $TargetPlatform =~ /^mips-/;
753 # toss stack adjustment after DoSparks
754 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
755 if $TargetPlatform =~ /^m68k-/; # this looks old...
757 if ( $TargetPlatform =~ /^alpha-/ &&
758 ! $magic_rdata_seen &&
759 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
760 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
761 $magic_rdata_seen = 1;
764 # pick some end-things and move them to the next chunk
766 # pin a funny end-thing on (for easier matching):
767 $c .= 'FUNNY#END#THING';
769 while ( $c =~ /$TMOVEDIRVS[@]?FUNNY#END#THING/o ) { # [@]? is a silly hack to avoid having to use curlies for T_PRE_APP
770 # (this SEGVs perl4 on alphas, you see)
773 if ( $i < ($numchks - 1)
774 && ( $to_move =~ /$TCOPYDIRVS/
775 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
776 $chk[$i + 1] = $to_move . $chk[$i + 1];
777 # otherwise they're tossed
780 $c =~ s/$TMOVEDIRVS[@]?FUNNY#END#THING/FUNNY#END#THING/o; # [@]? is a hack (see above)
783 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
785 # toss all prologue stuff, except for loading gp, and the ..ng address
786 if (($p, $r) = split(/^\t\.prologue/, $c)) {
787 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
788 $c = $keep . "..ng:\n";
790 print STDERR "malformed code block ($ent)?\n"
793 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
796 $c =~ s/FUNNY#END#THING//;
798 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
800 $chk[$i] = $c; # update w/ convenience copy
803 if ( $TargetPlatform =~ /^alpha-/ ) {
804 # print out the header stuff first
805 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
806 print OUTASM $chk[0];
808 } elsif ( $TargetPlatform =~ /^hppa/ ) {
809 print OUTASM $chk[0];
811 } elsif ( $TargetPlatform =~ /^mips-/ ) {
812 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
814 # get rid of horrible "<dollar>Revision: .*$" strings
815 local(@lines0) = split(/\n/, $chk[0]);
817 while ( $z <= $#lines0 ) {
818 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
821 while ( $z <= $#lines0 ) {
823 last if $lines0[$z] =~ /[,\t]0x0$/;
829 $chk[0] = join("\n", @lines0);
830 $chk[0] =~ s/\n\n+/\n/;
831 print OUTASM $chk[0];
834 # print out all the literal strings next
835 for ($i = 0; $i < $numchks; $i++) {
836 if ( $chkcat[$i] eq 'literal' ) {
837 print OUTASM $T_HDR_literal, $chk[$i];
838 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
840 $chkcat[$i] = 'DONE ALREADY';
844 # on the HPPA, print out all the bss next
845 if ( $TargetPlatform =~ /^hppa/ ) {
846 for ($i = 1; $i < $numchks; $i++) {
847 if ( $chkcat[$i] eq 'bss' ) {
848 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
849 print OUTASM $chk[$i];
851 $chkcat[$i] = 'DONE ALREADY';
856 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
857 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
859 next if $chkcat[$i] eq 'DONE ALREADY';
861 if ( $chkcat[$i] eq 'misc' ) {
862 if ($chk[$i] ne '') {
863 print OUTASM $T_HDR_misc;
864 if ($TargetPlatform =~ /^powerpc-|^rs6000/) {
865 $chksymb[$i] =~ s/://;
866 #new if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
867 #new || $chksymb[$i] =~ /^$.{T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
868 #new { print OUTASM "\t\.globl $chksymb[$i]\n"; }
869 # if ($chksymb[$i] ne '' && $chksymb[$i] !~ /ret_[a-z]/ && $chksymb[$i] !~ /djn_[a-z]/)
870 if ($chksymb[$i] ne '')
871 { print OUTASM "\t\.globl \.$chksymb[$i]\n"; };
872 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
873 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
874 else { $r = $chk[$i]; $printDS = 0; };
875 $chk[$i] = &mangle_powerpc_tailjump($r);
877 &print_doctored($chk[$i], 0);
878 if ($TargetPlatform =~ /^powerpc-|^rs6000-/ && $printDS) {
879 #ok if ($chksymb[$i] !~ /\_regMain/) {
880 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
881 print OUTASM "${p}TOC[tc0], 0\n";
886 } elsif ( $chkcat[$i] eq 'toss' ) {
887 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
889 } elsif ( $chkcat[$i] eq 'data' ) {
890 if ($chk[$i] ne '') {
891 print OUTASM $T_HDR_data;
892 print OUTASM $chk[$i];
895 } elsif ( $chkcat[$i] eq 'consist' ) {
896 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
897 local($consist) = "$1.$2.$3";
899 $consist =~ s/\//./g;
901 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
903 # Using a cygnus-2.7-96q4 gcc build on hppas, the
904 # consistency chunk for ghc_cc_ID often (but not always!)
905 # gets lumped with a bunch of .IMPORT directives containing info on
906 # the code or data space nature of external symbols. We can't
907 # toss these, so once the consistency ID has been turned into
908 # a representable symbol, we substitute it for the symbol
909 # that the string was attached to in the first place (ghc_cc_ID.)
910 # (The original string is also substituted away.)
912 # This change may affect the code output on other platforms in
913 # adverse ways, hence we restrict this hack hppa targets only.
916 if ( $TargetPlatform =~ /^hppa/ ) {
917 $chk[$i] =~ s/^$TUS[@]?ghc.*c_ID$TPOSTLBL/$consist/o;
918 $chk[$i] =~ s/\t$T_hsc_cc_PAT/$T_HDR_misc/o;
919 $consist = $chk[$i]; #clumsily
921 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
923 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
924 # on mips: consistency string is just a v
925 # horrible bunch of .bytes,
926 # which I am too lazy to sort out (WDP 95/05)
928 print STDERR "Couldn't grok consistency: ", $chk[$i];
931 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
932 # we can just re-constitute this one...
933 # NB: we emit _three_ underscores no matter what,
934 # so ghc-split doesn't have to care.
935 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
937 } elsif ( $chkcat[$i] eq 'closure'
938 || $chkcat[$i] eq 'srt'
939 || $chkcat[$i] eq 'infotbl'
940 || $chkcat[$i] eq 'slow'
941 || $chkcat[$i] eq 'fast' ) { # do them in that order
942 $symb = $chksymb[$i];
945 if ( defined($closurechk{$symb}) ) {
946 print OUTASM $T_HDR_closure;
947 print OUTASM $chk[$closurechk{$symb}];
948 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
952 if ( defined($srtchk{$symb}) ) {
953 print OUTASM $T_HDR_srt;
954 print OUTASM $chk[$srtchk{$symb}];
955 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
959 if ( defined($infochk{$symb}) ) {
961 print OUTASM $T_HDR_info;
962 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
963 if ( !defined($slowchk{$symb}) && defined($fastchk{$symb}) ) {
964 $fastname = $chk[$fastchk{$symb}];
965 $fastname =~ s/([_A-Za-z]*_fast\d+):.*(.*\n)*/\1/;
966 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long $fastname/;
968 $chk[$infochk{$symb}] =~ s/\.long ([_A-Za-z]\S+_entry)/\.long \.\1/;
969 $chk[$infochk{$symb}] =~ s/\.long ([A-Za-z]\S+_upd)/\.long \.\1/;
970 print OUTASM $chk[$infochk{$symb}];
972 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
974 # entry code will be put here!
976 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
980 if ( defined($slowchk{$symb}) ) {
982 # teach it to drop through to the fast entry point:
983 $c = $chk[$slowchk{$symb}];
985 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
986 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
987 if ($symb =~ /^[_A-Z]/)
989 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
990 print OUTASM "\.csect ${symb}_entry[DS]\n";
991 print OUTASM "${p}TOC[tc0], 0\n";
993 $r =~ s/\.csect \.text\[PR\]\n//; # todo: properly - andre
994 $c = &mangle_powerpc_tailjump($r);
997 if ( defined($fastchk{$symb}) ) {
998 if ( $TargetPlatform =~ /^alpha-/ ) {
999 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1000 } elsif ( $TargetPlatform =~ /^hppa/ ) {
1001 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
1002 } elsif ( $TargetPlatform =~ /^i386-/ ) {
1003 # Reg alloc depending, gcc generated code may jump to the fast entry point via
1004 # a number of registers.
1005 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%edx\n\tjmp \*\%edx\n//;
1006 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%ecx\n\tjmp \*\%ecx\n//;
1007 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%eax\n\tjmp \*\%eax\n//;
1008 # The next two only apply if we're not stealing %esi or %edi.
1009 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%esi\n\tjmp \*\%esi\n// if ($StolenX86Regs < 3);
1010 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%edi\n\tjmp \*\%edi\n// if ($StolenX86Regs < 4);
1011 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1012 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1013 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
1014 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
1015 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
1016 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ ) {
1017 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
1018 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
1019 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
1020 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
1022 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
1026 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
1027 # On alphas, hppa: no very good way to look for "dangling"
1028 # references to fast-entry point.
1029 # (questionable re hppa and mips...)
1030 print STDERR "still has jump to fast entry point:\n$c"
1031 if $c =~ /$TUS[@]?$symb[@]?_fast/; # NB: paranoia
1034 print OUTASM $T_HDR_entry;
1036 &print_doctored($c, 1); # NB: the 1!!!
1038 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1042 if ( defined($fastchk{$symb}) ) {
1043 $c = $chk[$fastchk{$symb}];
1044 if ( ! defined($slowchk{$symb})
1045 # ToDo: the || clause can go once we're no longer
1046 # concerned about producing exactly the same output as before
1047 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1049 print OUTASM $T_HDR_fast;
1051 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1052 local(@lbls) = split(/:/, $c);
1053 $fullname = $lbls[0];
1054 $fullname =~ s/$T_MOVE_DIRVS//g;
1055 if ( $fullname =~ /^[A-Z]/)
1056 { print OUTASM "\t\.globl \.${fullname}\n";
1058 # print OUTASM "\t\.lglobl \.${fullname}\n"; #todo: rm - andre
1060 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1061 $c = &mangle_powerpc_tailjump($c);
1063 &print_doctored($c, 0);
1064 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1067 } elsif ( $chkcat[$i] eq 'vector'
1068 || $chkcat[$i] eq 'direct' ) { # do them in that order
1069 $symb = $chksymb[$i];
1072 if ( defined($vectorchk{$symb}) ) {
1073 print OUTASM $T_HDR_vector;
1074 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1075 if ( $symb =~ /^[A-Z]/) {
1076 print OUTASM "\t\.globl \.${symb}_vtbl\n";
1077 print OUTASM "\t\.globl ${symb}_vtbl\n";
1079 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1080 print OUTASM ".${symb}_vtbl:\n";
1081 print OUTASM $chk[$vectorchk{$symb}];
1083 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1085 # direct return code will be put here!
1086 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1088 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1089 # Alphas: the commented nop is for the splitter, to ensure
1090 # that no module ends with a label as the very last
1091 # thing. (The linker will adjust the label to point
1092 # to the first code word of the next module linked in,
1093 # even if alignment constraints cause the label to move!)
1095 print OUTASM "\t# nop\n";
1098 } elsif ( $chkcat[$i] eq 'toc' ) {
1099 # silly optimisation to print tocs, since they come in groups...
1100 print OUTASM $T_HDR_toc;
1102 while ($chkcat[$j] eq 'toc')
1103 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1106 print OUTASM $chk[$j];
1108 $chkcat[$j] = 'DONE ALREADY';
1113 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1117 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1119 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1120 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1124 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1125 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1130 sub mash_hppa_prologue { # OK, epilogue, too
1133 # toss all prologue stuff
1134 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1136 # Lie about our .CALLINFO
1137 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1144 # toss all epilogue stuff
1145 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1147 # Sorry; we moved the _info stuff to the code segment.
1148 s/_info,DATA/_info,CODE/g;
1155 sub print_doctored {
1156 local($_, $need_fallthru_patch) = @_;
1158 if ( $TargetPlatform !~ /^i386-/
1159 || ! /^\t[a-z]/ # no instructions in here, apparently
1160 || /^${T_US}_reg[A-Za-z0-9_]+${T_POST_LBL}/) {
1164 # OK, must do some x86 **HACKING**
1166 local($entry_patch) = '';
1167 local($exit_patch) = '';
1169 # gotta watch out for weird instructions that
1170 # invisibly smash various regs:
1171 # rep* %ecx used for counting
1172 # scas* %edi used for destination index
1173 # cmps* %e[sd]i used for indices
1174 # loop* %ecx used for counting
1179 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1181 # * GCC used an "STG reg" for its own purposes
1183 # * some secret uses of machine reg, requiring STG reg
1184 # to be saved/restored
1186 # The most dangerous "GCC uses" of an "STG reg" are when
1187 # the reg holds the target of a jmp -- it's tricky to
1188 # insert the patch-up code before we get to the target!
1189 # So here we change the jmps:
1191 # --------------------------------------------------------
1192 # it can happen that we have jumps of the form...
1193 # jmp *<something involving %esp>
1195 # jmp <something involving another naughty register...>
1197 # a reasonably-common case is:
1199 # movl $_blah,<bad-reg>
1203 # the short form may tickle perl bug:
1204 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1205 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1206 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1207 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1208 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1210 if ($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/;
1225 # OK, now we can decide what our patch-up code is going to
1228 # Offsets into register table - you'd better update these magic
1229 # numbers should you change its contents!
1230 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1231 local($OFFSET_Hp)=92;
1233 # Note funky ".=" stuff; we're *adding* to these _patch guys
1234 if ( $StolenX86Regs <= 2
1235 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1236 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1237 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1239 # nothing for call_{entry,exit} because %esi is callee-save
1241 if ( $StolenX86Regs <= 3
1242 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1243 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1244 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1246 # nothing for call_{entry,exit} because %edi is callee-save
1249 # --------------------------------------------------------
1250 # next, here we go with non-%esp patching!
1252 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1254 # Before calling GC we must set up the exit condition before the call
1255 # and entry condition when we come back
1257 # fix _all_ non-local jumps:
1259 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1260 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1262 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1264 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1265 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1267 if ($StolenX86Regs == 2 ) {
1268 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1269 if /^\t(jmp|call) .*\%e(si|di)/;
1270 } elsif ($StolenX86Regs == 3 ) {
1271 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1272 if /^\t(jmp|call) .*\%edi/;
1275 # --------------------------------------------------------
1276 # that's it -- print it
1278 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1282 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1283 print OUTASM $exit_patch;
1284 # ToDo: make it not print if there is a "jmp" at the end
1290 sub init_FUNNY_THINGS {
1291 %KNOWN_FUNNY_THING = (
1293 # "${T_US}stg_.*{T_POST_LBL}", 1,
1298 The following table reversal is used for both info tables and return
1299 vectors. In both cases, we remove the first entry from the table,
1300 reverse the table, put the label at the end, and paste some code
1301 (that which is normally referred to by the first entry in the table)
1302 right after the table itself. (The code pasting is done elsewhere.)
1306 local($symb, $tbl, $discard1) = @_;
1308 local($before) = '';
1310 local(@imports) = (); # hppa only
1313 local(@lines) = split(/\n/, $tbl);
1314 local($i, $j); #local ($i, $extra, $words_to_pad, $j);
1316 # see comment in mangleAsm as to why this silliness is needed.
1317 local($TDOTWORD) = ${T_DOT_WORD};
1318 local($TDOTGLOBAL) = ${T_DOT_GLOBAL};
1319 local($TUS) = ${T_US};
1320 local($TPOSTLBL) = ${T_POST_LBL};
1322 # Deal with the header...
1323 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?$TDOTWORD\s+/o; $i++) {
1324 $label .= $lines[$i] . "\n",
1325 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info$TPOSTLBL[@]?$/o
1326 || $lines[$i] =~ /$TDOTGLOBAL/o
1327 || $lines[$i] =~ /^$TUS[@]?\S+_vtbl$TPOSTLBL[@]?$/o;
1329 $before .= $lines[$i] . "\n"; # otherwise...
1332 # Grab the table data...
1333 if ( $TargetPlatform !~ /^hppa/ ) {
1334 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?$TDOTWORD\s+/o; $i++) {
1335 push(@words, $lines[$i]);
1337 } else { # hppa weirdness
1338 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+($TDOTWORD|\.IMPORT)/; $i++) {
1339 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1340 push(@imports, $lines[$i]);
1342 # We don't use HP's ``function pointers''
1343 # We just use labels in code space, like normal people
1344 $lines[$i] =~ s/P%//;
1345 push(@words, $lines[$i]);
1350 # now throw away the first word (SRT) iff it is empty.
1351 # The .zero business is for Linux/ELF.
1352 # The .skip business is for Sparc/Solaris/ELF.
1353 # The .blockz business is for HPPA.
1354 if ($discard1 && $words[0] =~ /^\t?($TDOTWORD\s+0|\.zero\s+4|\.skip\s+4|\.blockz\s+4)/) {
1358 # Padding removed to reduce code size and improve performance on Pentiums.
1360 # for 486-cache-friendliness, we want our tables aligned
1361 # on 16-byte boundaries (.align 4). Let's pad:
1362 # $extra = ($#words + 1) % 4;
1363 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1364 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1366 for (; $i <= $#lines; $i++) {
1367 $after .= $lines[$i] . "\n";
1370 # Alphas:If we have anonymous text (not part of a procedure), the
1371 # linker may complain about missing exception information. Bleh.
1372 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1373 $before = "\t.ent $1\n" . $before;
1374 $after .= "\t.end $1\n";
1378 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1379 . join("\n", @words) . "\n"
1382 # print STDERR "before=$before\n";
1383 # print STDERR "label=$label\n";
1384 # print STDERR "words=",(reverse @words),"\n";
1385 # print STDERR "after=$after\n";
1391 The HP is a major nuisance. The threaded code mangler moved info
1392 tables from data space to code space, but unthreaded code in the RTS
1393 still has references to info tables in data space. Since the HP
1394 linker is very precise about where symbols live, we need to patch the
1395 references in the unthreaded RTS as well.
1398 sub mini_mangle_asm_hppa {
1399 local($in_asmf, $out_asmf) = @_;
1401 open(INASM, "< $in_asmf")
1402 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1403 open(OUTASM,"> $out_asmf")
1404 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1407 s/_info,DATA/_info,CODE/; # Move _info references to code space
1413 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1414 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1420 sub mini_mangle_asm_powerpc {
1421 local($in_asmf, $out_asmf) = @_;
1423 open(INASM, "< $in_asmf")
1424 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1425 open(OUTASM,"> $out_asmf")
1426 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1429 s/long _PRStart/long ._PRStart/;
1430 s/long _PRIn_/long ._PRIn_/;
1431 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1432 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1433 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1434 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1435 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1436 s/\.tc EnterNodeCode\[TC]\,EnterNodeCode\[DS\]/\.tc EnterNodeCode\[TC]\,.EnterNodeCode/; # CONC
1437 s/\.tc CheckHeapCode\[TC]\,CheckHeapCode\[DS\]/\.tc CheckHeapCode\[TC]\,.CheckHeapCode/; # CONC
1442 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1443 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1446 sub mangle_powerpc_tailjump {
1448 local($maybe_more) = 1;
1449 while (($c =~ /\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1452 $lcsymb =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1453 # the checks for r1 and r2 are mostly paranoia...
1455 $r1 =~ s/(.*\n)*\tlw?z? (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1457 $r2 =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1460 $c =~ s/((.*\n)*)\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1466 # make "require"r happy...