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 = '\.word';
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_srt = "\.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 ( $TargetPlatform =~ /^i386-.*-(solaris2|linux|freebsd3)$/ ) {
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 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
142 ($TargetPlatform =~ /-(linux|freebsd3)$/) ? '#' : '/' ;
143 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
145 $T_X86_PRE_LLBL_PAT = '\.L';
146 $T_X86_PRE_LLBL = '.L';
147 $T_X86_BADJMP = '^\tjmp [^\.\*]';
149 $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)';
150 $T_COPY_DIRVS = '\.(globl)';
152 if ( $TargetPlatform =~ /freebsd3/ ) {
153 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
155 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
158 $T_DOT_WORD = '\.(long|value|byte|zero)';
159 $T_DOT_GLOBAL = '\.globl';
160 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
161 $T_HDR_misc = "\.text\n\t\.align 4\n";
162 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
163 $T_HDR_consist = "\.text\n";
164 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
165 $T_HDR_srt = "\.data\n\t\.align 4\n"; # ToDo: change align?
166 $T_HDR_info = "\.text\n\t\.align 16\n"; # NB: requires padding
167 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
168 $T_HDR_fast = "\.text\n\t\.align 16\n";
169 $T_HDR_vector = "\.text\n\t\.align 16\n"; # NB: requires padding
170 $T_HDR_direct = "\.text\n\t\.align 16\n";
172 #--------------------------------------------------------#
173 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
175 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
176 $T_US = '_'; # _ if symbols have an underscore on the front
177 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
178 $T_CONST_LBL = '^LC(\d+):$';
181 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
182 $T_COPY_DIRVS = '\.(globl|proc|stab)';
183 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
185 $T_DOT_WORD = '\.long';
186 $T_DOT_GLOBAL = '\.globl';
187 $T_HDR_literal = "\.text\n\t\.even\n";
188 $T_HDR_misc = "\.text\n\t\.even\n";
189 $T_HDR_data = "\.data\n\t\.even\n";
190 $T_HDR_consist = "\.text\n";
191 $T_HDR_closure = "\.data\n\t\.even\n";
192 $T_HDR_srt = "\.data\n\t\.even\n";
193 $T_HDR_info = "\.text\n\t\.even\n";
194 $T_HDR_entry = "\.text\n\t\.even\n";
195 $T_HDR_fast = "\.text\n\t\.even\n";
196 $T_HDR_vector = "\.text\n\t\.even\n";
197 $T_HDR_direct = "\.text\n\t\.even\n";
199 #--------------------------------------------------------#
200 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
202 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
203 $T_US = ''; # _ if symbols have an underscore on the front
204 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
205 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
208 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
209 $T_COPY_DIRVS = '\.(globl|ent)';
211 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
212 $T_DOT_WORD = '\.word';
213 $T_DOT_GLOBAL = '^\t\.globl';
214 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
215 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
216 $T_HDR_data = "\t\.data\n\t\.align 2\n";
217 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
218 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
219 $T_HDR_srt = "\t\.data\n\t\.align 2\n";
220 $T_HDR_info = "\t\.text\n\t\.align 2\n";
221 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
222 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
223 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
224 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
226 #--------------------------------------------------------#
227 } elsif ( $TargetPlatform =~ /^powerpc-.*|^rs6000-.*/ ) {
229 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
230 $T_US = ''; # _ if symbols have an underscore on the front
231 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
232 $T_CONST_LBL = 'NOT APPLICABLE'; # regexp for what such a lbl looks like
235 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
236 $T_COPY_DIRVS = '\.(l?globl)';
238 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
239 $T_DOT_WORD = '\.long';
240 $T_DOT_GLOBAL = '\.globl';
241 $T_HDR_toc = "\.toc\n";
242 $T_HDR_literal = "\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
243 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
244 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
245 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
246 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
247 $T_HDR_srt = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
248 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
249 $T_HDR_entry = "# entry\n\.csect \.text[PR]\n\t\.align 2\n";
250 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
251 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
252 $T_HDR_direct = "# direct\n";
254 #--------------------------------------------------------#
255 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
257 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
258 $T_US = ''; # _ if symbols have an underscore on the front
259 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
260 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
263 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
264 $T_COPY_DIRVS = '\.(global|proc|stab)';
266 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
267 $T_DOT_WORD = '\.(word|byte|half|skip)';
268 $T_DOT_GLOBAL = '^\t\.global';
269 $T_HDR_literal = "\.text\n\t\.align 8\n";
270 $T_HDR_misc = "\.text\n\t\.align 4\n";
271 $T_HDR_data = "\.data\n\t\.align 8\n";
272 $T_HDR_consist = "\.text\n";
273 $T_HDR_closure = "\.data\n\t\.align 4\n";
274 $T_HDR_srt = "\.data\n\t\.align 4\n";
275 $T_HDR_info = "\.text\n\t\.align 4\n";
276 $T_HDR_entry = "\.text\n\t\.align 4\n";
277 $T_HDR_fast = "\.text\n\t\.align 4\n";
278 $T_HDR_vector = "\.text\n\t\.align 4\n";
279 $T_HDR_direct = "\.text\n\t\.align 4\n";
281 #--------------------------------------------------------#
282 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
284 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
285 $T_US = '_'; # _ if symbols have an underscore on the front
286 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
287 $T_CONST_LBL = '^LC(\d+):$';
290 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
291 $T_COPY_DIRVS = '\.(global|proc|stab)';
292 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
294 $T_DOT_WORD = '\.word';
295 $T_DOT_GLOBAL = '^\t\.global';
296 $T_HDR_literal = "\.text\n\t\.align 8\n";
297 $T_HDR_misc = "\.text\n\t\.align 4\n";
298 $T_HDR_data = "\.data\n\t\.align 8\n";
299 $T_HDR_consist = "\.text\n";
300 $T_HDR_closure = "\.data\n\t\.align 4\n";
301 $T_HDR_srt = "\.data\n\t\.align 4\n";
302 $T_HDR_info = "\.text\n\t\.align 4\n";
303 $T_HDR_entry = "\.text\n\t\.align 4\n";
304 $T_HDR_fast = "\.text\n\t\.align 4\n";
305 $T_HDR_vector = "\.text\n\t\.align 4\n";
306 $T_HDR_direct = "\.text\n\t\.align 4\n";
308 #--------------------------------------------------------#
310 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
315 print STDERR "T_STABBY: $T_STABBY\n";
316 print STDERR "T_US: $T_US\n";
317 print STDERR "T_PRE_APP: $T_PRE_APP\n";
318 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
319 print STDERR "T_POST_LBL: $T_POST_LBL\n";
320 if ( $TargetPlatform =~ /^i386-/ ) {
321 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
322 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
323 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
325 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
326 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
327 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
328 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
329 print STDERR "T_HDR_literal: $T_HDR_literal\n";
330 print STDERR "T_HDR_misc: $T_HDR_misc\n";
331 print STDERR "T_HDR_data: $T_HDR_data\n";
332 print STDERR "T_HDR_consist: $T_HDR_consist\n";
333 print STDERR "T_HDR_closure: $T_HDR_closure\n";
334 print STDERR "T_HDR_info: $T_HDR_info\n";
335 print STDERR "T_HDR_entry: $T_HDR_entry\n";
336 print STDERR "T_HDR_fast: $T_HDR_fast\n";
337 print STDERR "T_HDR_vector: $T_HDR_vector\n";
338 print STDERR "T_HDR_direct: $T_HDR_direct\n";
344 %************************************************************************
346 \subsection{Mangle away}
348 %************************************************************************
352 local($in_asmf, $out_asmf) = @_;
354 # multi-line regexp matching:
359 &init_TARGET_STUFF();
360 &init_FUNNY_THINGS();
362 # perl4 on alphas SEGVs when give ${foo} substitutions in patterns.
363 # To avoid them we declare some locals that allows to avoid using curlies.
364 local($TUS) = ${T_US};
365 local($TPOSTLBL) = ${T_POST_LBL};
366 local($TMOVEDIRVS) = ${T_MOVE_DIRVS};
367 local($TPREAPP) = ${T_PRE_APP};
368 local($TCOPYDIRVS) = ${T_COPY_DIRVS};
369 local($TDOTWORD) = ${T_DOT_WORD};
371 open(INASM, "< $in_asmf")
372 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
373 open(OUTASM,"> $out_asmf")
374 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
376 # read whole file, divide into "chunks":
377 # record some info about what we've found...
379 @chk = (); # contents of the chunk
380 $numchks = 0; # number of them
381 @chkcat = (); # what category of thing in each chunk
382 @chksymb = (); # what symbol(base) is defined in this chunk
383 %slowchk = (); # ditto, its regular "slow" entry code
384 %fastchk = (); # ditto, fast entry code
385 %closurechk = (); # ditto, the (static) closure
386 %srtchk = (); # ditto, its SRT (for top-level things)
387 %infochk = (); # given a symbol base, say what chunk its info tbl is in
388 %vectorchk = (); # ditto, return vector table
389 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
391 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
394 next if $T_STABBY && /^\.stab.*$TUS[@]?__stg_split_marker/o;
395 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
396 next if /^\t\.def.*endef$/;
397 next if /$TPREAPP(NO_)?APP/o;
398 next if /^;/ && $TargetPlatform =~ /^hppa/;
400 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc|rs6000)-/;
402 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-|^rs6000-/;
404 if ( $TargetPlatform =~ /^mips-/
405 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
406 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
408 # As a temporary solution for compiling "foreign export" declarations,
409 # we use global variables to pass arguments from C to STG land.
410 # These declarations live in the .hc file and not in the generated C
411 # stub file, so we let them pass through here.
412 } elsif ( /^\t\.comm\t__fexp_.*$/ ) {
414 $chkcat[$i] = 'data';
417 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
418 # duplicated from the bottom
422 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
423 # Alphas: Local labels not to be confused with new chunks
426 # NB: all the rest start with a non-space
428 } elsif ( $TargetPlatform =~ /^mips-/
429 && /^\d+:/ ) { # a funny-looking very-local label
432 } elsif ( /$T_CONST_LBL/o ) {
434 $chkcat[$i] = 'literal';
437 } elsif ( /^$TUS[@]?__stg_split_marker(\d+)$TPOSTLBL[@]?$/o ) {
439 $chkcat[$i] = 'splitmarker';
442 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_info$TPOSTLBL[@]?$/o ) {
445 $chkcat[$i] = 'infotbl';
446 $chksymb[$i] = $symb;
448 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
450 $infochk{$symb} = $i;
452 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_(entry|ret)$TPOSTLBL[@]?$/o ) {
454 $chkcat[$i] = 'slow';
459 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_fast\d*$TPOSTLBL[@]?$/o ) {
461 $chkcat[$i] = 'fast';
466 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_closure$TPOSTLBL[@]?$/o ) {
468 $chkcat[$i] = 'closure';
471 $closurechk{$1} = $i;
473 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_srt$TPOSTLBL[@]?$/o ) {
480 } elsif ( /^$TUS[@]?ghc.*c_ID$TPOSTLBL/o ) {
482 $chkcat[$i] = 'consist';
484 } elsif ( /^($TUS[@]?__gnu_compiled_c|gcc2_compiled\.)$TPOSTLBL/o ) {
487 } elsif ( /^$TUS[A-Za-z0-9_]+\.\d+$TPOSTLBL[@]?$/o
488 || /^$TUS[@]?.*_CAT$TPOSTLBL[@]?$/o # PROF: _entryname_CAT
489 || /^$TUS[@]?CC_.*_struct$TPOSTLBL[@]?$/o # PROF: _CC_ccident_struct
490 || /^$TUS[@]?.*_done$TPOSTLBL[@]?$/o # PROF: _module_done
491 || /^$TUS[@]?_module_registered$TPOSTLBL[@]?$/o # PROF: _module_registered
494 $chkcat[$i] = 'data';
497 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
502 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^LC\.\.([0-9]+)/ ) {
507 } elsif ( /^$TUS[@]?CC(S)?_.*$/ ) {
508 # all CC_ symbols go in the data section...
510 $chkcat[$i] = 'data';
513 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_(alt|dflt)$TPOSTLBL[@]?$/o ) {
515 $chkcat[$i] = 'misc';
518 #$chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-|^rs6000-/) ; #rm andre
520 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_vtbl$TPOSTLBL[@]?$/o ) {
522 $chkcat[$i] = 'vector';
527 # As a temporary solution for compiling "foreign export" declarations,
528 # we use global variables to pass arguments from C to STG land.
529 # These declarations live in the .hc file and not in the generated C
530 # stub file, so we let them pass through here.
531 } elsif ( /^[\t ]+\.comm[\t ]+__fexp_.*$/ ) {
533 $chkcat[$i] = 'data';
536 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
537 && /^(_uname|uname|stat|fstat):/ ) {
538 # for some utterly bizarre reason, this platform
539 # likes to drop little local C routines with these names
540 # into each and every .o file that #includes the
541 # relevant system .h file. Yuck. We just don't
542 # tolerate them in .hc files (which we are processing
543 # here). If you need to call one of these things from
544 # Haskell, make a call to your own C wrapper, then
545 # put that C wrapper (which calls one of these) in a
546 # plain .c file. WDP 95/12
548 $chkcat[$i] = 'toss';
551 } elsif ( /^$TUS[@]?[A-Za-z0-9_]/o
552 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
554 && ( $TargetPlatform !~ /^powerpc|^rs6000/ # ditto
555 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
558 print "Funny global thing?: $_"
559 unless $KNOWN_FUNNY_THING{$thing}
560 || /^$TUS[@]?stg_.*$TPOSTLBL[@]?$/o # RTS internals
561 || /^$TUS[@]__fexp_.*$TPOSTLBL$/o # foreign export
562 || /^$TUS[@]?_reg.*$TPOSTLBL$/o # PROF: __reg<module>
563 || /^$TUS[@]?.*_btm$TPOSTLBL$/o # large bitmaps
564 || /^$TUS[@]?.*_closure_tbl$TPOSTLBL$/o; # closure tables
566 $chkcat[$i] = 'misc';
567 if ($TargetPlatform =~ /^powerpc-|^rs6000-/)
568 { $chksymb[$i] = $thing; }
569 else { $chksymb[$i] = ''; };
571 } else { # simple line (duplicated at the top)
576 $numchks = $#chk + 1;
578 # the division into chunks is imperfect;
579 # we throw some things over the fence into the next
582 # also, there are things we would like to know
583 # about the whole module before we start spitting
586 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
588 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
590 # Alphas: NB: we start meddling at chunk 1, not chunk 0
591 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
592 # spits a ".quad 0" in after the v first ".rdata"; we
593 # detect this special case (tossing the ".quad 0")!
594 local($magic_rdata_seen) = 0;
596 # HPPAs, MIPSen: also start medding at chunk 1
598 if ($TargetPlatform =~ /^powerpc|^rs6000/) {
599 print OUTASM $T_HDR_toc; # yes, we have to put a .toc
600 # in the beginning of every file!
601 %tocequiv = (); # maps toc symbol number to toc symbol
602 %revtocequiv = (); # maps toc symbol to toc symbol number
603 for ($i = 1; $i < $numchks; $i++) {
604 $chk[$i] =~ s/\[RW\]//g;
605 $chk[$i] =~ s/\[DS\]//g;
606 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
608 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
609 #ToDo: instead of all these changes, just fix mangle_powerpc_tailjump and delete/ignore these tocs?
610 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
611 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
612 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
613 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
614 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(alt_\S+)/\t\.tc \1\[TC\],\.\2/;
615 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
617 $tocnumber = $chksymb[$i];
619 $tocsymb =~ s/^LC\.\.\d+:\n//;
620 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
621 $tocequiv{$tocnumber} = $tocsymb;
623 } elsif ( $chkcat[$i] eq 'toc' && $chk[$i] =~ /\.byte/ ) {
624 $chkcat[$i] = 'literal';
629 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
630 $c = $chk[$i]; # convenience copy
632 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
634 # toss all prologue stuff; HPPA is pretty weird
636 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
638 # be slightly paranoid to make sure there's
639 # nothing surprising in there
640 if ( $c =~ /--- BEGIN ---/ ) {
641 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
643 if ($TargetPlatform =~ /^i386-/) {
644 $p =~ s/^\tpushl \%edi\n//;
645 $p =~ s/^\tpushl \%esi\n//;
646 $p =~ s/^\tsubl \$\d+,\%esp\n//;
647 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
648 } elsif ($TargetPlatform =~ /^m68k-/) {
649 $p =~ s/^\tlink a6,#-?\d.*\n//;
650 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
651 # The above showed up in the asm code,
652 # so I added it here.
653 # I hope it's correct.
655 $p =~ s/^\tmovel d2,sp\@-\n//;
656 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
657 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
658 } elsif ($TargetPlatform =~ /^mips-/) {
659 # the .frame/.mask/.fmask that we use is the same
660 # as that produced by GCC for miniInterpret; this
661 # gives GDB some chance of figuring out what happened
662 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
663 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
664 $p =~ s/^\t\.(mask|fmask).*\n//g;
665 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
666 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
667 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
668 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
669 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
670 $p =~ s/__FRAME__/$FRAME/;
671 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000/) {
672 $p =~ s/^\tmflr 0\n//;
673 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
674 $p =~ s/^\tstw? 0,\d+\(1\)\n//g;
675 $p =~ s/^\tstw? 1,\d+\(1\)\n//g; #mc
676 $p =~ s/^\tlw?z 0,0\(1\)\n//g; #mc
677 $p =~ s/^\tstw?u 1,-\d+\(1\)\n//;
678 $p =~ s/^\tstw? \d+,-\d+\(1\)\n//g;
679 $p =~ s/^\tstfd \d+,-\d+\(1\)\n//g;
681 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
684 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
685 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
687 # glue together what's left
689 $c =~ s/\n\t\n/\n/; # junk blank line
693 if ( $TargetPlatform =~ /^mips-/ ) {
694 # MIPS: first, this basic sequence may occur "--- END ---" or not
695 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
698 # toss all epilogue stuff; again, paranoidly
699 if ( $c =~ /--- END ---/ ) {
700 if (($r, $e) = split(/--- END ---/, $c)) {
701 if ($TargetPlatform =~ /^i386-/) {
703 $e =~ s/^\tpopl \%edi\n//;
704 $e =~ s/^\tpopl \%esi\n//;
705 $e =~ s/^\taddl \$\d+,\%esp\n//;
706 } elsif ($TargetPlatform =~ /^m68k-/) {
707 $e =~ s/^\tunlk a6\n//;
709 } elsif ($TargetPlatform =~ /^mips-/) {
710 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
711 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
712 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
713 $e =~ s/^\tj\t\$31\n//;
714 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
715 $e =~ s/^\taddi 1,1,\d+\n//;
716 $e =~ s/^\tcal 1,\d+\(1\)\n//;
717 $e =~ s/^\tlw?z? \d+,\d+\(1\)\n//;
718 $e =~ s/^\tmtlr 0\n//;
721 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
723 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
724 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
726 # glue together what's left
728 $c =~ s/\n\t\n/\n/; # junk blank line
732 # On SPARCs, we don't do --- BEGIN/END ---, we just
733 # toss the register-windowing save/restore/ret* instructions
735 if ( $TargetPlatform =~ /^sparc-/ ) {
736 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
737 # throw away PROLOGUE comments
738 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
741 # On Alphas, the prologue mangling is done a little later (below)
743 # toss all calls to __DISCARD__
744 $c =~ s/^\t(call|jbsr|jal)\s+$TUS[@]?__DISCARD__\n//go;
746 # MIPS: that may leave some gratuitous asm macros around
747 # (no harm done; but we get rid of them to be tidier)
748 $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/
749 if $TargetPlatform =~ /^mips-/;
751 # toss stack adjustment after DoSparks
752 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
753 if $TargetPlatform =~ /^m68k-/; # this looks old...
755 if ( $TargetPlatform =~ /^alpha-/ &&
756 ! $magic_rdata_seen &&
757 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
758 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
759 $magic_rdata_seen = 1;
762 # pick some end-things and move them to the next chunk
764 # pin a funny end-thing on (for easier matching):
765 $c .= 'FUNNY#END#THING';
767 while ( $c =~ /$TMOVEDIRVS[@]?FUNNY#END#THING/o ) { # [@]? is a silly hack to avoid having to use curlies for T_PRE_APP
768 # (this SEGVs perl4 on alphas, you see)
771 if ( $i < ($numchks - 1)
772 && ( $to_move =~ /$TCOPYDIRVS/
773 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
774 $chk[$i + 1] = $to_move . $chk[$i + 1];
775 # otherwise they're tossed
778 $c =~ s/$TMOVEDIRVS[@]?FUNNY#END#THING/FUNNY#END#THING/o; # [@]? is a hack (see above)
781 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
783 # toss all prologue stuff, except for loading gp, and the ..ng address
784 if (($p, $r) = split(/^\t\.prologue/, $c)) {
785 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
786 $c = $keep . "..ng:\n";
788 print STDERR "malformed code block ($ent)?\n"
791 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
794 $c =~ s/FUNNY#END#THING//;
796 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
798 $chk[$i] = $c; # update w/ convenience copy
801 if ( $TargetPlatform =~ /^alpha-/ ) {
802 # print out the header stuff first
803 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
804 print OUTASM $chk[0];
806 } elsif ( $TargetPlatform =~ /^hppa/ ) {
807 print OUTASM $chk[0];
809 } elsif ( $TargetPlatform =~ /^mips-/ ) {
810 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
812 # get rid of horrible "<dollar>Revision: .*$" strings
813 local(@lines0) = split(/\n/, $chk[0]);
815 while ( $z <= $#lines0 ) {
816 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
819 while ( $z <= $#lines0 ) {
821 last if $lines0[$z] =~ /[,\t]0x0$/;
827 $chk[0] = join("\n", @lines0);
828 $chk[0] =~ s/\n\n+/\n/;
829 print OUTASM $chk[0];
832 # print out all the literal strings next
833 for ($i = 0; $i < $numchks; $i++) {
834 if ( $chkcat[$i] eq 'literal' ) {
835 print OUTASM $T_HDR_literal, $chk[$i];
836 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
838 $chkcat[$i] = 'DONE ALREADY';
842 # on the HPPA, print out all the bss next
843 if ( $TargetPlatform =~ /^hppa/ ) {
844 for ($i = 1; $i < $numchks; $i++) {
845 if ( $chkcat[$i] eq 'bss' ) {
846 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
847 print OUTASM $chk[$i];
849 $chkcat[$i] = 'DONE ALREADY';
854 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
855 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
857 next if $chkcat[$i] eq 'DONE ALREADY';
859 if ( $chkcat[$i] eq 'misc' ) {
860 if ($chk[$i] ne '') {
861 print OUTASM $T_HDR_misc;
862 if ($TargetPlatform =~ /^powerpc-|^rs6000/) {
863 $chksymb[$i] =~ s/://;
864 #new if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
865 #new || $chksymb[$i] =~ /^$.{T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
866 #new { print OUTASM "\t\.globl $chksymb[$i]\n"; }
867 # if ($chksymb[$i] ne '' && $chksymb[$i] !~ /ret_[a-z]/ && $chksymb[$i] !~ /djn_[a-z]/)
868 if ($chksymb[$i] ne '')
869 { print OUTASM "\t\.globl \.$chksymb[$i]\n"; };
870 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
871 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
872 else { $r = $chk[$i]; $printDS = 0; };
873 $chk[$i] = &mangle_powerpc_tailjump($r);
875 &print_doctored($chk[$i], 0);
876 if ($TargetPlatform =~ /^powerpc-|^rs6000-/ && $printDS) {
877 #ok if ($chksymb[$i] !~ /\_regMain/) {
878 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
879 print OUTASM "${p}TOC[tc0], 0\n";
884 } elsif ( $chkcat[$i] eq 'toss' ) {
885 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
887 } elsif ( $chkcat[$i] eq 'data' ) {
888 if ($chk[$i] ne '') {
889 print OUTASM $T_HDR_data;
890 print OUTASM $chk[$i];
893 } elsif ( $chkcat[$i] eq 'consist' ) {
894 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
895 local($consist) = "$1.$2.$3";
897 $consist =~ s/\//./g;
899 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
901 # Using a cygnus-2.7-96q4 gcc build on hppas, the
902 # consistency chunk for ghc_cc_ID often (but not always!)
903 # gets lumped with a bunch of .IMPORT directives containing info on
904 # the code or data space nature of external symbols. We can't
905 # toss these, so once the consistency ID has been turned into
906 # a representable symbol, we substitute it for the symbol
907 # that the string was attached to in the first place (ghc_cc_ID.)
908 # (The original string is also substituted away.)
910 # This change may affect the code output on other platforms in
911 # adverse ways, hence we restrict this hack hppa targets only.
914 if ( $TargetPlatform =~ /^hppa/ ) {
915 $chk[$i] =~ s/^$TUS[@]?ghc.*c_ID$TPOSTLBL/$consist/o;
916 $chk[$i] =~ s/\t$T_hsc_cc_PAT/$T_HDR_misc/o;
917 $consist = $chk[$i]; #clumsily
919 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
921 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
922 # on mips: consistency string is just a v
923 # horrible bunch of .bytes,
924 # which I am too lazy to sort out (WDP 95/05)
926 print STDERR "Couldn't grok consistency: ", $chk[$i];
929 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
930 # we can just re-constitute this one...
931 # NB: we emit _three_ underscores no matter what,
932 # so ghc-split doesn't have to care.
933 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
935 } elsif ( $chkcat[$i] eq 'closure'
936 || $chkcat[$i] eq 'srt'
937 || $chkcat[$i] eq 'infotbl'
938 || $chkcat[$i] eq 'slow'
939 || $chkcat[$i] eq 'fast' ) { # do them in that order
940 $symb = $chksymb[$i];
943 if ( defined($closurechk{$symb}) ) {
944 print OUTASM $T_HDR_closure;
945 print OUTASM $chk[$closurechk{$symb}];
946 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
950 if ( defined($srtchk{$symb}) ) {
951 print OUTASM $T_HDR_srt;
952 print OUTASM $chk[$srtchk{$symb}];
953 $chkcat[$srtchk{$symb}] = 'DONE ALREADY';
957 if ( defined($infochk{$symb}) ) {
959 print OUTASM $T_HDR_info;
960 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
961 if ( !defined($slowchk{$symb}) && defined($fastchk{$symb}) ) {
962 $fastname = $chk[$fastchk{$symb}];
963 $fastname =~ s/([_A-Za-z]*_fast\d+):.*(.*\n)*/\1/;
964 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long $fastname/;
966 $chk[$infochk{$symb}] =~ s/\.long ([_A-Za-z]\S+_entry)/\.long \.\1/;
967 $chk[$infochk{$symb}] =~ s/\.long ([A-Za-z]\S+_upd)/\.long \.\1/;
968 print OUTASM $chk[$infochk{$symb}];
970 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
972 # entry code will be put here!
974 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
978 if ( defined($slowchk{$symb}) ) {
980 # teach it to drop through to the fast entry point:
981 $c = $chk[$slowchk{$symb}];
983 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
984 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
985 if ($symb =~ /^[_A-Z]/)
987 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
988 print OUTASM "\.csect ${symb}_entry[DS]\n";
989 print OUTASM "${p}TOC[tc0], 0\n";
991 $r =~ s/\.csect \.text\[PR\]\n//; # todo: properly - andre
992 $c = &mangle_powerpc_tailjump($r);
995 if ( defined($fastchk{$symb}) ) {
996 if ( $TargetPlatform =~ /^alpha-/ ) {
997 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
998 } elsif ( $TargetPlatform =~ /^hppa/ ) {
999 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
1000 } elsif ( $TargetPlatform =~ /^i386-/ ) {
1001 # Reg alloc depending, gcc generated code may jump to the fast entry point via
1002 # a number of registers.
1003 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%edx\n\tjmp \*\%edx\n//;
1004 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%ecx\n\tjmp \*\%ecx\n//;
1005 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%eax\n\tjmp \*\%eax\n//;
1006 # The next two only apply if we're not stealing %esi or %edi.
1007 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%esi\n\tjmp \*\%esi\n// if ($StolenX86Regs < 3);
1008 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d*,\%edi\n\tjmp \*\%edi\n// if ($StolenX86Regs < 4);
1009 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1010 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1011 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
1012 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
1013 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
1014 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ ) {
1015 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
1016 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
1017 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
1018 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
1020 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
1024 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
1025 # On alphas, hppa: no very good way to look for "dangling"
1026 # references to fast-entry point.
1027 # (questionable re hppa and mips...)
1028 print STDERR "still has jump to fast entry point:\n$c"
1029 if $c =~ /$TUS[@]?$symb[@]?_fast/; # NB: paranoia
1032 print OUTASM $T_HDR_entry;
1034 &print_doctored($c, 1); # NB: the 1!!!
1036 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1040 if ( defined($fastchk{$symb}) ) {
1041 $c = $chk[$fastchk{$symb}];
1042 if ( ! defined($slowchk{$symb})
1043 # ToDo: the || clause can go once we're no longer
1044 # concerned about producing exactly the same output as before
1045 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1047 print OUTASM $T_HDR_fast;
1049 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1050 local(@lbls) = split(/:/, $c);
1051 $fullname = $lbls[0];
1052 $fullname =~ s/$T_MOVE_DIRVS//g;
1053 if ( $fullname =~ /^[A-Z]/)
1054 { print OUTASM "\t\.globl \.${fullname}\n";
1056 # print OUTASM "\t\.lglobl \.${fullname}\n"; #todo: rm - andre
1058 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1059 $c = &mangle_powerpc_tailjump($c);
1061 &print_doctored($c, 0);
1062 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1065 } elsif ( $chkcat[$i] eq 'vector'
1066 || $chkcat[$i] eq 'direct' ) { # do them in that order
1067 $symb = $chksymb[$i];
1070 if ( defined($vectorchk{$symb}) ) {
1071 print OUTASM $T_HDR_vector;
1072 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1073 if ( $symb =~ /^[A-Z]/) {
1074 print OUTASM "\t\.globl \.${symb}_vtbl\n";
1075 print OUTASM "\t\.globl ${symb}_vtbl\n";
1077 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1078 print OUTASM ".${symb}_vtbl:\n";
1079 print OUTASM $chk[$vectorchk{$symb}];
1081 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1083 # direct return code will be put here!
1084 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1086 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1087 # Alphas: the commented nop is for the splitter, to ensure
1088 # that no module ends with a label as the very last
1089 # thing. (The linker will adjust the label to point
1090 # to the first code word of the next module linked in,
1091 # even if alignment constraints cause the label to move!)
1093 print OUTASM "\t# nop\n";
1096 } elsif ( $chkcat[$i] eq 'toc' ) {
1097 # silly optimisation to print tocs, since they come in groups...
1098 print OUTASM $T_HDR_toc;
1100 while ($chkcat[$j] eq 'toc')
1101 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1104 print OUTASM $chk[$j];
1106 $chkcat[$j] = 'DONE ALREADY';
1111 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1115 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1117 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1118 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1122 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1123 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1128 sub mash_hppa_prologue { # OK, epilogue, too
1131 # toss all prologue stuff
1132 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1134 # Lie about our .CALLINFO
1135 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1142 # toss all epilogue stuff
1143 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1145 # Sorry; we moved the _info stuff to the code segment.
1146 s/_info,DATA/_info,CODE/g;
1153 sub print_doctored {
1154 local($_, $need_fallthru_patch) = @_;
1156 if ( $TargetPlatform !~ /^i386-/
1157 || ! /^\t[a-z]/ # no instructions in here, apparently
1158 || /^${T_US}_reg[A-Za-z0-9_]+:/) {
1162 # OK, must do some x86 **HACKING**
1164 local($entry_patch) = '';
1165 local($exit_patch) = '';
1167 # gotta watch out for weird instructions that
1168 # invisibly smash various regs:
1169 # rep* %ecx used for counting
1170 # scas* %edi used for destination index
1171 # cmps* %e[sd]i used for indices
1172 # loop* %ecx used for counting
1177 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1179 # * GCC used an "STG reg" for its own purposes
1181 # * some secret uses of machine reg, requiring STG reg
1182 # to be saved/restored
1184 # The most dangerous "GCC uses" of an "STG reg" are when
1185 # the reg holds the target of a jmp -- it's tricky to
1186 # insert the patch-up code before we get to the target!
1187 # So here we change the jmps:
1189 # --------------------------------------------------------
1190 # it can happen that we have jumps of the form...
1191 # jmp *<something involving %esp>
1193 # jmp <something involving another naughty register...>
1195 # a reasonably-common case is:
1197 # movl $_blah,<bad-reg>
1201 # the short form may tickle perl bug:
1202 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1203 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1204 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1205 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1206 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1208 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1209 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1210 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1211 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1212 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1213 if /(jmp|call) .*\%esi/;
1215 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1216 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1217 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1218 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1219 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1220 if /(jmp|call) .*\%edi/;
1223 # OK, now we can decide what our patch-up code is going to
1226 # Offsets into register table - you'd better update these magic
1227 # numbers should you change its contents!
1228 # local($OFFSET_R1)=0; No offset for R1 in new RTS.
1229 local($OFFSET_Hp)=92;
1231 # Note funky ".=" stuff; we're *adding* to these _patch guys
1232 if ( $StolenX86Regs <= 2
1233 && ( /[^0-9]\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1234 $entry_patch .= "\tmovl \%esi,(\%ebx)\n";
1235 $exit_patch .= "\tmovl (\%ebx),\%esi\n";
1237 # nothing for call_{entry,exit} because %esi is callee-save
1239 if ( $StolenX86Regs <= 3
1240 && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # Hp (edi)
1241 $entry_patch .= "\tmovl \%edi,${OFFSET_Hp}(\%ebx)\n";
1242 $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%edi\n";
1244 # nothing for call_{entry,exit} because %edi is callee-save
1247 # --------------------------------------------------------
1248 # next, here we go with non-%esp patching!
1250 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1252 # Before calling GC we must set up the exit condition before the call
1253 # and entry condition when we come back
1255 # fix _all_ non-local jumps:
1257 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1258 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1260 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1262 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1263 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1265 if ($StolenX86Regs == 2 ) {
1266 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1267 if /^\t(jmp|call) .*\%e(si|di)/;
1268 } elsif ($StolenX86Regs == 3 ) {
1269 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1270 if /^\t(jmp|call) .*\%edi/;
1273 # --------------------------------------------------------
1274 # that's it -- print it
1276 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1280 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1281 print OUTASM $exit_patch;
1282 # ToDo: make it not print if there is a "jmp" at the end
1288 sub init_FUNNY_THINGS {
1289 %KNOWN_FUNNY_THING = (
1291 # "${T_US}stg_.*{T_POST_LBL}", 1,
1296 The following table reversal is used for both info tables and return
1297 vectors. In both cases, we remove the first entry from the table,
1298 reverse the table, put the label at the end, and paste some code
1299 (that which is normally referred to by the first entry in the table)
1300 right after the table itself. (The code pasting is done elsewhere.)
1304 local($symb, $tbl, $discard1) = @_;
1306 local($before) = '';
1308 local(@imports) = (); # hppa only
1311 local(@lines) = split(/\n/, $tbl);
1312 local($i, $j); #local ($i, $extra, $words_to_pad, $j);
1314 # see comment in mangleAsm as to why this silliness is needed.
1315 local($TDOTWORD) = ${T_DOT_WORD};
1316 local($TDOTGLOBAL) = ${T_DOT_GLOBAL};
1317 local($TUS) = ${T_US};
1318 local($TPOSTLBL) = ${T_POST_LBL};
1320 # Deal with the header...
1321 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t?$TDOTWORD\s+/o; $i++) {
1322 $label .= $lines[$i] . "\n",
1323 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info$TPOSTLBL[@]?$/o
1324 || $lines[$i] =~ /$TDOTGLOBAL/o
1325 || $lines[$i] =~ /^$TUS[@]?\S+_vtbl$TPOSTLBL[@]?$/o;
1327 $before .= $lines[$i] . "\n"; # otherwise...
1330 # Grab the table data...
1331 if ( $TargetPlatform !~ /^hppa/ ) {
1332 for ( ; $i <= $#lines && $lines[$i] =~ /^\t?$TDOTWORD\s+/o; $i++) {
1333 push(@words, $lines[$i]);
1335 } else { # hppa weirdness
1336 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1337 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1338 push(@imports, $lines[$i]);
1340 # We don't use HP's ``function pointers''
1341 # We just use labels in code space, like normal people
1342 $lines[$i] =~ s/P%//;
1343 push(@words, $lines[$i]);
1348 # now throw away the first word (SRT) iff it is empty.
1349 # The .zero business is for Linux/ELF.
1350 # The .skip business is for Sparc/Solaris/ELF.
1351 if ($discard1 && $words[0] =~ /^\t?($TDOTWORD\s+0|\.zero\s+4|\.skip\s+4)/) {
1355 # Padding removed to reduce code size and improve performance on Pentiums.
1357 # for 486-cache-friendliness, we want our tables aligned
1358 # on 16-byte boundaries (.align 4). Let's pad:
1359 # $extra = ($#words + 1) % 4;
1360 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1361 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1363 for (; $i <= $#lines; $i++) {
1364 $after .= $lines[$i] . "\n";
1367 # Alphas:If we have anonymous text (not part of a procedure), the
1368 # linker may complain about missing exception information. Bleh.
1369 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1370 $before = "\t.ent $1\n" . $before;
1371 $after .= "\t.end $1\n";
1375 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1376 . join("\n", @words) . "\n"
1379 # print STDERR "before=$before\n";
1380 # print STDERR "label=$label\n";
1381 # print STDERR "words=",(reverse @words),"\n";
1382 # print STDERR "after=$after\n";
1388 The HP is a major nuisance. The threaded code mangler moved info
1389 tables from data space to code space, but unthreaded code in the RTS
1390 still has references to info tables in data space. Since the HP
1391 linker is very precise about where symbols live, we need to patch the
1392 references in the unthreaded RTS as well.
1395 sub mini_mangle_asm_hppa {
1396 local($in_asmf, $out_asmf) = @_;
1398 open(INASM, "< $in_asmf")
1399 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1400 open(OUTASM,"> $out_asmf")
1401 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1404 s/_info,DATA/_info,CODE/; # Move _info references to code space
1410 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1411 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1417 sub mini_mangle_asm_powerpc {
1418 local($in_asmf, $out_asmf) = @_;
1420 open(INASM, "< $in_asmf")
1421 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1422 open(OUTASM,"> $out_asmf")
1423 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1426 s/long _PRStart/long ._PRStart/;
1427 s/long _PRIn_/long ._PRIn_/;
1428 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1429 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1430 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1431 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1432 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1433 s/\.tc EnterNodeCode\[TC]\,EnterNodeCode\[DS\]/\.tc EnterNodeCode\[TC]\,.EnterNodeCode/; # CONC
1434 s/\.tc CheckHeapCode\[TC]\,CheckHeapCode\[DS\]/\.tc CheckHeapCode\[TC]\,.CheckHeapCode/; # CONC
1439 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1440 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1443 sub mangle_powerpc_tailjump {
1445 local($maybe_more) = 1;
1446 while (($c =~ /\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1449 $lcsymb =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1450 # the checks for r1 and r2 are mostly paranoia...
1452 $r1 =~ s/(.*\n)*\tlw?z? (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1454 $r2 =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1457 $c =~ s/((.*\n)*)\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1463 # make "require"r happy...