1 %************************************************************************
3 \section[Driver-asm-fiddling]{Fiddling with assembler files}
5 %************************************************************************
10 Utterly stomp out C functions' prologues and epilogues; i.e., the
11 stuff to do with the C stack.
13 Any other required tidying up.
19 The HP linker is very picky about symbols being in the appropriate
20 space (code vs. data). When we mangle the threaded code to put the
21 info tables just prior to the code, they wind up in code space
22 rather than data space. This means that references to *_info from
23 un-mangled parts of the RTS (e.g. unthreaded GC code) get
24 unresolved symbols. Solution: mini-mangler for .c files on HP. I
25 think this should really be triggered in the driver by a new -rts
26 option, so that user code doesn't get mangled inappropriately.
28 With reversed tables, jumps are to the _info label rather than to
29 the _entry label. The _info label is just an address in code
30 space, rather than an entry point with the descriptive blob we
31 talked about yesterday. As a result, you can't use the call-style
32 JMP_ macro. However, some JMP_ macros take _info labels as targets
33 and some take code entry points within the RTS. The latter won't
34 work with the goto-style JMP_ macro. Sigh. Solution: Use the goto
35 style JMP_ macro, and mangle some more assembly, changing all
36 "RP'literal" and "LP'literal" references to "R'literal" and
37 "L'literal," so that you get the real address of the code, rather
38 than the descriptive blob. Also change all ".word P%literal"
39 entries in info tables and vector tables to just ".word literal,"
40 for the same reason. Advantage: No more ridiculous call sequences.
43 %************************************************************************
45 \subsection{Constants for various architectures}
47 %************************************************************************
50 sub init_TARGET_STUFF {
52 #--------------------------------------------------------#
53 if ( $TargetPlatform =~ /^alpha-.*-.*/ ) {
55 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
56 $T_US = ''; # _ if symbols have an underscore on the front
57 $T_DO_GC = 'PerformGC_wrapper';
58 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
59 $T_CONST_LBL = '^\$C(\d+):$'; # regexp for what such a lbl looks like
62 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\#.*|\.(file|loc)\s+\S+\s+\S+|\.text|\.r?data)\n)';
63 $T_COPY_DIRVS = '^\s*(\#|\.(file|globl|ent|loc))';
65 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
66 $T_DOT_WORD = '\.quad';
67 $T_DOT_GLOBAL = '^\t\.globl';
68 $T_HDR_literal = "\.rdata\n\t\.align 3\n";
69 $T_HDR_misc = "\.text\n\t\.align 3\n";
70 $T_HDR_data = "\.data\n\t\.align 3\n";
71 $T_HDR_consist = "\.text\n";
72 $T_HDR_closure = "\.data\n\t\.align 3\n";
73 $T_HDR_info = "\.text\n\t\.align 3\n";
74 $T_HDR_entry = "\.text\n\t\.align 3\n";
75 $T_HDR_fast = "\.text\n\t\.align 3\n";
76 $T_HDR_vector = "\.text\n\t\.align 3\n";
77 $T_HDR_direct = "\.text\n\t\.align 3\n";
79 #--------------------------------------------------------#
80 } elsif ( $TargetPlatform =~ /^hppa/ ) {
82 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
83 $T_US = ''; # _ if symbols have an underscore on the front
84 $T_DO_GC = 'PerformGC_wrapper';
85 $T_PRE_APP = 'DONT THINK THIS APPLIES'; # regexp that says what comes before APP/NO_APP
86 $T_CONST_LBL = '^L\$C(\d+)$'; # regexp for what such a lbl looks like
89 $T_MOVE_DIRVS = '^((\s+\.(IMPORT|EXPORT|PARAM).*|\s+\.align\s+\d+|\s+\.(SPACE|SUBSPA)\s+\S+|\s*)\n)';
90 $T_COPY_DIRVS = '^\s+\.(IMPORT|EXPORT)';
92 $T_hsc_cc_PAT = '\.STRING.*\)(hsc|cc) (.*)\\\\x09(.*)\\\\x00"';
93 $T_DOT_WORD = '\.word';
94 $T_DOT_GLOBAL = '^\s+\.EXPORT';
95 $T_HDR_literal = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
96 $T_HDR_misc = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
97 $T_HDR_data = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
98 $T_HDR_consist = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n";
99 $T_HDR_closure = "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$DATA\$\n\t\.align 4\n";
100 $T_HDR_info = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
101 $T_HDR_entry = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
102 $T_HDR_fast = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
103 $T_HDR_vector = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
104 $T_HDR_direct = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$CODE\$\n\t\.align 4\n";
106 #--------------------------------------------------------#
107 } elsif ( $TargetPlatform =~ /^i386-.*-(linuxaout|freebsd|nextstep3|cygwin32)/ ) {
108 # NeXT added but not tested. CaS
110 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
111 $T_US = '_'; # _ if symbols have an underscore on the front
112 $T_DO_GC = '_PerformGC_wrapper';
113 $T_PRE_APP = '^#'; # regexp that says what comes before APP/NO_APP
114 $T_CONST_LBL = '^LC(\d+):$';
116 $T_X86_PRE_LLBL_PAT = 'L';
117 $T_X86_PRE_LLBL = 'L';
118 $T_X86_BADJMP = '^\tjmp [^L\*]';
120 $T_MOVE_DIRVS = '^(\s*(\.(p2)?align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.stab[^n].*|\.type\s+.*|\.size\s+.*)\n)';
121 $T_COPY_DIRVS = '\.(globl|stab)';
122 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
123 $T_DOT_WORD = '\.long';
124 $T_DOT_GLOBAL = '\.globl';
125 $T_HDR_literal = "\.text\n\t\.align 2\n";
126 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
127 $T_HDR_data = "\.data\n\t\.align 2\n";
128 $T_HDR_consist = "\.text\n";
129 $T_HDR_closure = "\.data\n\t\.align 2\n";
130 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
131 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
132 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
133 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
134 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
136 #--------------------------------------------------------#
137 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux)$/ ) {
139 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
140 $T_US = ''; # _ if symbols have an underscore on the front
141 $T_DO_GC = 'PerformGC_wrapper';
142 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
143 ($TargetPlatform =~ /-linux$/) ? '#' : '/' ;
144 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
146 $T_X86_PRE_LLBL_PAT = '\.L';
147 $T_X86_PRE_LLBL = '.L';
148 $T_X86_BADJMP = '^\tjmp [^\.\*]';
150 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.Lfe.*\n\t\.size\s+.*|\.size\s+.*|\.ident.*)\n)';
151 $T_COPY_DIRVS = '\.(globl)';
153 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
154 $T_DOT_WORD = '\.long';
155 $T_DOT_GLOBAL = '\.globl';
156 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
157 $T_HDR_misc = "\.text\n\t\.align 16\n";
158 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
159 $T_HDR_consist = "\.text\n";
160 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
161 $T_HDR_info = "\.text\n\t\.align 16\n"; # NB: requires padding
162 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
163 $T_HDR_fast = "\.text\n\t\.align 16\n";
164 $T_HDR_vector = "\.text\n\t\.align 16\n"; # NB: requires padding
165 $T_HDR_direct = "\.text\n\t\.align 16\n";
167 #--------------------------------------------------------#
168 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
170 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
171 $T_US = '_'; # _ if symbols have an underscore on the front
172 $T_DO_GC = '_PerformGC_wrapper';
173 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
174 $T_CONST_LBL = '^LC(\d+):$';
177 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
178 $T_COPY_DIRVS = '\.(globl|proc|stab)';
179 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
181 $T_DOT_WORD = '\.long';
182 $T_DOT_GLOBAL = '\.globl';
183 $T_HDR_literal = "\.text\n\t\.even\n";
184 $T_HDR_misc = "\.text\n\t\.even\n";
185 $T_HDR_data = "\.data\n\t\.even\n";
186 $T_HDR_consist = "\.text\n";
187 $T_HDR_closure = "\.data\n\t\.even\n";
188 $T_HDR_info = "\.text\n\t\.even\n";
189 $T_HDR_entry = "\.text\n\t\.even\n";
190 $T_HDR_fast = "\.text\n\t\.even\n";
191 $T_HDR_vector = "\.text\n\t\.even\n";
192 $T_HDR_direct = "\.text\n\t\.even\n";
194 #--------------------------------------------------------#
195 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
197 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
198 $T_US = ''; # _ if symbols have an underscore on the front
199 $T_DO_GC = 'PerformGC_wrapper';
200 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
201 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
204 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
205 $T_COPY_DIRVS = '\.(globl|ent)';
207 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
208 $T_DOT_WORD = '\.word';
209 $T_DOT_GLOBAL = '^\t\.globl';
210 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
211 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
212 $T_HDR_data = "\t\.data\n\t\.align 2\n";
213 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
214 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
215 $T_HDR_info = "\t\.text\n\t\.align 2\n";
216 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
217 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
218 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
219 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
221 #--------------------------------------------------------#
222 } elsif ( $TargetPlatform =~ /^powerpc-.*|^rs6000-.*/ ) {
224 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
225 $T_US = ''; # _ if symbols have an underscore on the front
226 $T_DO_GC = '\.PerformGC_wrapper';
227 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
228 $T_CONST_LBL = 'NOT APPLICABLE'; # regexp for what such a lbl looks like
231 $T_MOVE_DIRVS = '^(\s*(\.toc|\.align \d+|\.csect \S+|\t\.?l?globl \S+)\n)';
232 $T_COPY_DIRVS = '\.(l?globl)';
234 $T_hsc_cc_PAT = '\.byte.*\)(hsc|cc) (.*)"\n\t\.byte \d+\n\t\.byte "(.*)"\n\t\.byte \d+';
235 $T_DOT_WORD = '\.long';
236 $T_DOT_GLOBAL = '\.globl';
237 $T_HDR_toc = "\.toc\n";
238 $T_HDR_literal = "\.csect .data[RW]\n\t\.align 2\n"; #not RO!?
239 $T_HDR_misc = "# misc\n\.csect \.text[PR]\n\t\.align 2\n";
240 $T_HDR_data = "# data\n\.csect \.data[RW]\n\t\.align 2\n";
241 $T_HDR_consist = "# consist\n\.csect \.data[RW]\n\t\.align 2\n";
242 $T_HDR_closure = "# closure\n\.csect \.data[RW]\n\t\.align 2\n";
243 $T_HDR_info = "# info\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
244 $T_HDR_entry = "# entry\n\.csect \.text[PR]\n\t\.align 2\n";
245 $T_HDR_fast = "# fast\n\.csect \.text[PR]\n\t\.align 2\n";
246 $T_HDR_vector = "# vector\n\.csect \.data[RW]\n\t\.align 2\n"; #not RO!?
247 $T_HDR_direct = "# direct\n";
249 #--------------------------------------------------------#
250 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
252 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
253 $T_US = ''; # _ if symbols have an underscore on the front
254 $T_DO_GC = 'PerformGC_wrapper';
255 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
256 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
259 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
260 $T_COPY_DIRVS = '\.(global|proc|stab)';
262 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
263 $T_DOT_WORD = '\.word';
264 $T_DOT_GLOBAL = '^\t\.global';
265 $T_HDR_literal = "\.text\n\t\.align 8\n";
266 $T_HDR_misc = "\.text\n\t\.align 4\n";
267 $T_HDR_data = "\.data\n\t\.align 8\n";
268 $T_HDR_consist = "\.text\n";
269 $T_HDR_closure = "\.data\n\t\.align 4\n";
270 $T_HDR_info = "\.text\n\t\.align 4\n";
271 $T_HDR_entry = "\.text\n\t\.align 4\n";
272 $T_HDR_fast = "\.text\n\t\.align 4\n";
273 $T_HDR_vector = "\.text\n\t\.align 4\n";
274 $T_HDR_direct = "\.text\n\t\.align 4\n";
276 #--------------------------------------------------------#
277 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
279 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
280 $T_US = '_'; # _ if symbols have an underscore on the front
281 $T_DO_GC = '_PerformGC_wrapper';
282 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
283 $T_CONST_LBL = '^LC(\d+):$';
286 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
287 $T_COPY_DIRVS = '\.(global|proc|stab)';
288 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
290 $T_DOT_WORD = '\.word';
291 $T_DOT_GLOBAL = '^\t\.global';
292 $T_HDR_literal = "\.text\n\t\.align 8\n";
293 $T_HDR_misc = "\.text\n\t\.align 4\n";
294 $T_HDR_data = "\.data\n\t\.align 8\n";
295 $T_HDR_consist = "\.text\n";
296 $T_HDR_closure = "\.data\n\t\.align 4\n";
297 $T_HDR_info = "\.text\n\t\.align 4\n";
298 $T_HDR_entry = "\.text\n\t\.align 4\n";
299 $T_HDR_fast = "\.text\n\t\.align 4\n";
300 $T_HDR_vector = "\.text\n\t\.align 4\n";
301 $T_HDR_direct = "\.text\n\t\.align 4\n";
303 #--------------------------------------------------------#
305 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
310 print STDERR "T_STABBY: $T_STABBY\n";
311 print STDERR "T_US: $T_US\n";
312 print STDERR "T_DO_GC: $T_DO_GC\n";
313 print STDERR "T_PRE_APP: $T_PRE_APP\n";
314 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
315 print STDERR "T_POST_LBL: $T_POST_LBL\n";
316 if ( $TargetPlatform =~ /^i386-/ ) {
317 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
318 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
319 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
321 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
322 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
323 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
324 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
325 print STDERR "T_HDR_literal: $T_HDR_literal\n";
326 print STDERR "T_HDR_misc: $T_HDR_misc\n";
327 print STDERR "T_HDR_data: $T_HDR_data\n";
328 print STDERR "T_HDR_consist: $T_HDR_consist\n";
329 print STDERR "T_HDR_closure: $T_HDR_closure\n";
330 print STDERR "T_HDR_info: $T_HDR_info\n";
331 print STDERR "T_HDR_entry: $T_HDR_entry\n";
332 print STDERR "T_HDR_fast: $T_HDR_fast\n";
333 print STDERR "T_HDR_vector: $T_HDR_vector\n";
334 print STDERR "T_HDR_direct: $T_HDR_direct\n";
340 %************************************************************************
342 \subsection{Mangle away}
344 %************************************************************************
348 local($in_asmf, $out_asmf) = @_;
350 # multi-line regexp matching:
355 &init_TARGET_STUFF();
356 &init_FUNNY_THINGS();
358 # perl4 on alphas SEGVs when give ${foo} substitutions in patterns.
359 # To avoid them we declare some locals that allows to avoid using curlies.
360 local($TUS) = ${T_US};
361 local($TPOSTLBL) = ${T_POST_LBL};
362 local($TMOVEDIRVS) = ${T_MOVE_DIRVS};
363 local($TPREAPP) = ${T_PRE_APP};
364 local($TCOPYDIRVS) = ${T_COPY_DIRVS};
365 local($TDOTWORD) = ${T_DOT_WORD};
367 open(INASM, "< $in_asmf")
368 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
369 open(OUTASM,"> $out_asmf")
370 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
372 # read whole file, divide into "chunks":
373 # record some info about what we've found...
375 @chk = (); # contents of the chunk
376 $numchks = 0; # number of them
377 @chkcat = (); # what category of thing in each chunk
378 @chksymb = (); # what symbol(base) is defined in this chunk
379 %slowchk = (); # ditto, its regular "slow" entry code
380 %fastchk = (); # ditto, fast entry code
381 %closurechk = (); # ditto, the (static) closure
382 %infochk = (); # given a symbol base, say what chunk its info tbl is in
383 %vectorchk = (); # ditto, return vector table
384 %directchk = (); # ditto, direct return code
385 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
387 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
390 next if $T_STABBY && /^\.stab.*$TUS[@]?__stg_split_marker/o;
391 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
392 next if /$TPREAPP(NO_)?APP/o;
393 next if /^;/ && $TargetPlatform =~ /^hppa/;
395 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc|rs6000)-/;
397 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-|^rs6000-/;
399 if ( $TargetPlatform =~ /^mips-/
400 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
401 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
403 # As a temporary solution for compiling "foreign export" declarations,
404 # we use global variables to pass arguments from C to STG land.
405 # These declarations live in the .hc file and not in the generated C
406 # stub file, so we let them pass through here.
407 } elsif ( /^\t\.comm\t__fexp_.*$/ ) {
409 $chkcat[$i] = 'data';
412 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
413 # duplicated from the bottom
417 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
418 # Alphas: Local labels not to be confused with new chunks
421 # NB: all the rest start with a non-space
423 } elsif ( $TargetPlatform =~ /^mips-/
424 && /^\d+:/ ) { # a funny-looking very-local label
427 } elsif ( /$T_CONST_LBL/o ) {
429 $chkcat[$i] = 'literal';
432 } elsif ( /^$TUS[@]?__stg_split_marker(\d+)$TPOSTLBL[@]?$/o ) {
434 $chkcat[$i] = 'splitmarker';
437 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_info$TPOSTLBL[@]?$/o ) {
440 $chkcat[$i] = 'infotbl';
441 $chksymb[$i] = $symb;
443 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
445 $infochk{$symb} = $i;
447 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_entry$TPOSTLBL[@]?$/o ) {
449 $chkcat[$i] = 'slow';
454 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_fast\d+$TPOSTLBL[@]?$/o ) {
456 $chkcat[$i] = 'fast';
461 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_closure$TPOSTLBL[@]?$/o ) {
463 $chkcat[$i] = 'closure';
466 $closurechk{$1} = $i;
468 } elsif ( /^$TUS[@]?ghc.*c_ID$TPOSTLBL/o ) {
470 $chkcat[$i] = 'consist';
472 } elsif ( /^($TUS[@]?__gnu_compiled_c|gcc2_compiled\.)$TPOSTLBL/o ) {
475 } elsif ( /^$TUS[@]?ErrorIO_call_count$TPOSTLBL[@]?$/o # HACK!!!!
476 || /^$TUS[A-Za-z0-9_]+\.\d+$TPOSTLBL[@]?$/o
477 || /^$TUS[@]?.*_CAT$TPOSTLBL[@]?$/o # PROF: _entryname_CAT
478 || /^$TUS[@]?CC_.*_struct$TPOSTLBL[@]?$/o # PROF: _CC_ccident_struct
479 || /^$TUS[@]?.*_done$TPOSTLBL[@]?$/o # PROF: _module_done
480 || /^$TUS[@]?_module_registered$TPOSTLBL[@]?$/o # PROF: _module_registered
483 $chkcat[$i] = 'data';
486 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
491 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^LC\.\.([0-9]+)/ ) {
496 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ && /^CC_.*$/ ) {
497 # all CC_ symbols go in the data section...
499 $chkcat[$i] = 'data';
502 } elsif ( /^($TUS[@]?(ret_|djn_)[A-Za-z0-9_]+)/o ) {
504 $chkcat[$i] = 'misc';
507 $chksymb[$i] = $symbtmp if ($TargetPlatform =~ /^powerpc-|^rs6000-/) ; #rm andre
509 } elsif ( /^$TUS[@]?vtbl_([A-Za-z0-9_]+)$TPOSTLBL[@]?$/o ) {
511 $chkcat[$i] = 'vector';
516 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)DirectReturn$TPOSTLBL[@]?$/o ) {
518 $chkcat[$i] = 'direct';
523 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_upd$TPOSTLBL[@]?$/o ) {
525 $chkcat[$i] = 'misc';
526 print STDERR "_upd!!!!! I guess this code is dead!!!!\n";
527 # I guess this is never entered, since all _upds are
528 # either vtbl_'s or ret_'s, caught above. - andre
531 # As a temporary solution for compiling "foreign export" declarations,
532 # we use global variables to pass arguments from C to STG land.
533 # These declarations live in the .hc file and not in the generated C
534 # stub file, so we let them pass through here.
535 } elsif ( /^[\t ]+\.comm[\t ]+__fexp_.*$/ ) {
537 $chkcat[$i] = 'data';
540 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
541 && /^(_uname|uname|stat|fstat):/ ) {
542 # for some utterly bizarre reason, this platform
543 # likes to drop little local C routines with these names
544 # into each and every .o file that #includes the
545 # relevant system .h file. Yuck. We just don't
546 # tolerate them in .hc files (which we are processing
547 # here). If you need to call one of these things from
548 # Haskell, make a call to your own C wrapper, then
549 # put that C wrapper (which calls one of these) in a
550 # plain .c file. WDP 95/12
552 $chkcat[$i] = 'toss';
555 } elsif ( /^$TUS[@]?[A-Za-z0-9_]/o
556 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
558 && ( $TargetPlatform !~ /^powerpc|^rs6000/ # ditto
559 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
562 print STDERR "Funny global thing?: $_"
563 unless $KNOWN_FUNNY_THING{$thing}
564 || /^$TUS[@]?_(PRIn|PRStart).*$TPOSTLBL[@]?$/o # pointer reversal GC routines
565 || /^$TUS[@]?CC_.*$TPOSTLBL$/o # PROF: _CC_ccident ([@]? is a silly hack (see above))
566 || /^$TUS__fexp_.*$TPOSTLBL$/o # foreign export droppings (temporary)
567 || /^$TUS[@]?_reg.*$TPOSTLBL$/o; # PROF: __reg<module>
569 $chkcat[$i] = 'misc';
570 if ($TargetPlatform =~ /^powerpc-|^rs6000-/)
571 { $chksymb[$i] = $thing; }
572 else { $chksymb[$i] = ''; };
574 } else { # simple line (duplicated at the top)
579 $numchks = $#chk + 1;
581 # the division into chunks is imperfect;
582 # we throw some things over the fence into the next
585 # also, there are things we would like to know
586 # about the whole module before we start spitting
589 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
591 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
593 # Alphas: NB: we start meddling at chunk 1, not chunk 0
594 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
595 # spits a ".quad 0" in after the v first ".rdata"; we
596 # detect this special case (tossing the ".quad 0")!
597 local($magic_rdata_seen) = 0;
599 # HPPAs, MIPSen: also start medding at chunk 1
601 if ($TargetPlatform =~ /^powerpc|^rs6000/) {
602 print OUTASM $T_HDR_toc; # yes, we have to put a .toc
603 # in the beginning of every file!
604 %tocequiv = (); # maps toc symbol number to toc symbol
605 %revtocequiv = (); # maps toc symbol to toc symbol number
606 for ($i = 1; $i < $numchks; $i++) {
607 $chk[$i] =~ s/\[RW\]//g;
608 $chk[$i] =~ s/\[DS\]//g;
609 $chk[$i] =~ s/^\.csect .*\[DS\]$//g;
611 if ( $chkcat[$i] eq 'toc' && $chk[$i] !~ /\.byte/ )
612 #ToDo: instead of all these changes, just fix mangle_powerpc_tailjump and delete/ignore these tocs?
613 { $chk[$i] =~ s/$T_MOVE_DIRVS//g;
614 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_fast\d+)/\t\.tc \1\[TC\],\.\2/;
615 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(\S+_entry)\n/\t\.tc \1\[TC\],\.\2\n/;
616 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(ret_\S+)/\t\.tc \1\[TC\],\.\2/;
617 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(djn_\S+)/\t\.tc \1\[TC\],\.\2/;
618 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],(vtbl_\S+)/\t\.tc \1\[TC\],\.\2/;
619 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],ErrorIO_innards/\t\.tc \1\[TC\],\.ErrorIO_innards/;
620 $chk[$i] =~ s/\t\.tc (\S+)\[TC\],startStgWorld/\t\.tc \1\[TC\],\.startStgWorld/;
621 $chk[$i] =~ s/\.tc UpdatePAP\[TC\],UpdatePAP/\.tc UpdatePAP\[TC\],\.UpdatePAP/;
622 $chk[$i] =~ s/\.tc _regMain\[TC\],_regMain/\.tc _regMain\[TC\],\._regMain/; #PROF
623 $chk[$i] =~ s/\.tc resumeThread\[TC\],resumeThread/\.tc resumeThread\[TC\],\.resumeThread/; #CONC
624 $chk[$i] =~ s/\.tc EnterNodeCode\[TC\],EnterNodeCode/\.tc EnterNodeCode\[TC\],\.EnterNodeCode/; #CONC
625 $chk[$i] =~ s/\.tc StackUnderflowEnterNode\[TC\],StackUnderflowEnterNode/\.tc StackUnderflowEnterNode\[TC\],\.StackUnderflowEnterNode/; #CONC
626 $chk[$i] =~ s/\.tc stopThreadDirectReturn\[TC\],stopThreadDirectReturn/\.tc stopThreadDirectReturn\[TC\],\.stopThreadDirectReturn/; #CONC
627 $chk[$i] =~ s/\.tc CommonUnderflow\[TC\],CommonUnderflow/\.tc CommonUnderflow\[TC\],\.CommonUnderflow/; #PAR
628 $chk[$i] =~ s/\.tc IndUpdRetDir\[TC\],IndUpdRetDir/\.tc IndUpdRetDir\[TC\],\.IndUpdRetDir/;
629 $chk[$i] =~ s/\t\.tc (_PRStart_\S+)\[TC\],_PRStart_\S+/\t\.tc \1\[TC\],\.\1/;
631 $tocnumber = $chksymb[$i];
633 $tocsymb =~ s/^LC\.\.\d+:\n//;
634 $tocsymb =~ s/^\t\.tc \S+,(\S+)\n/\1/;
635 $tocequiv{$tocnumber} = $tocsymb;
637 } elsif ( $chkcat[$i] eq 'toc' && $chk[$i] =~ /\.byte/ ) {
638 $chkcat[$i] = 'literal';
643 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
644 $c = $chk[$i]; # convenience copy
646 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
648 # toss all prologue stuff; HPPA is pretty weird
650 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
652 # be slightly paranoid to make sure there's
653 # nothing surprising in there
654 if ( $c =~ /--- BEGIN ---/ ) {
655 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
657 if ($TargetPlatform =~ /^i386-/) {
658 $p =~ s/^\tpushl \%edi\n//;
659 $p =~ s/^\tpushl \%esi\n//;
660 $p =~ s/^\tsubl \$\d+,\%esp\n//;
661 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
662 } elsif ($TargetPlatform =~ /^m68k-/) {
663 $p =~ s/^\tlink a6,#-?\d.*\n//;
664 $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;
665 # The above showed up in the asm code,
666 # so I added it here.
667 # I hope it's correct.
669 $p =~ s/^\tmovel d2,sp\@-\n//;
670 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
671 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
672 } elsif ($TargetPlatform =~ /^mips-/) {
673 # the .frame/.mask/.fmask that we use is the same
674 # as that produced by GCC for miniInterpret; this
675 # gives GDB some chance of figuring out what happened
676 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
677 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
678 $p =~ s/^\t\.(mask|fmask).*\n//g;
679 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
680 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
681 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
682 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
683 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
684 $p =~ s/__FRAME__/$FRAME/;
685 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000/) {
686 $p =~ s/^\tmflr 0\n//;
687 $p =~ s/^\tstm \d+,-\d+\(1\)\n//;
688 $p =~ s/^\tstw? 0,\d+\(1\)\n//g;
689 $p =~ s/^\tstw? 1,\d+\(1\)\n//g; #mc
690 $p =~ s/^\tlw?z 0,0\(1\)\n//g; #mc
691 $p =~ s/^\tstw?u 1,-\d+\(1\)\n//;
692 $p =~ s/^\tstw? \d+,-\d+\(1\)\n//g;
693 $p =~ s/^\tstfd \d+,-\d+\(1\)\n//g;
695 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
698 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
699 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
701 # glue together what's left
703 $c =~ s/\n\t\n/\n/; # junk blank line
707 if ( $TargetPlatform =~ /^mips-/ ) {
708 # MIPS: first, this basic sequence may occur "--- END ---" or not
709 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
712 # toss all epilogue stuff; again, paranoidly
713 if ( $c =~ /--- END ---/ ) {
714 if (($r, $e) = split(/--- END ---/, $c)) {
715 if ($TargetPlatform =~ /^i386-/) {
717 $e =~ s/^\tpopl \%edi\n//;
718 $e =~ s/^\tpopl \%esi\n//;
719 $e =~ s/^\taddl \$\d+,\%esp\n//;
720 } elsif ($TargetPlatform =~ /^m68k-/) {
721 $e =~ s/^\tunlk a6\n//;
723 } elsif ($TargetPlatform =~ /^mips-/) {
724 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
725 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
726 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
727 $e =~ s/^\tj\t\$31\n//;
728 } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
729 $e =~ s/^\taddi 1,1,\d+\n//;
730 $e =~ s/^\tcal 1,\d+\(1\)\n//;
731 $e =~ s/^\tlw?z? \d+,\d+\(1\)\n//;
732 $e =~ s/^\tmtlr 0\n//;
735 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
737 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
738 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
740 # glue together what's left
742 $c =~ s/\n\t\n/\n/; # junk blank line
746 # On SPARCs, we don't do --- BEGIN/END ---, we just
747 # toss the register-windowing save/restore/ret* instructions
749 if ( $TargetPlatform =~ /^sparc-/ ) {
750 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
751 # throw away PROLOGUE comments
752 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
755 # On Alphas, the prologue mangling is done a little later (below)
757 # toss all calls to __DISCARD__
758 $c =~ s/^\t(call|jbsr|jal)\s+$TUS[@]?__DISCARD__\n//go;
760 # MIPS: that may leave some gratuitous asm macros around
761 # (no harm done; but we get rid of them to be tidier)
762 $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/
763 if $TargetPlatform =~ /^mips-/;
765 # toss stack adjustment after DoSparks
766 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
767 if $TargetPlatform =~ /^m68k-/; # this looks old...
769 if ( $TargetPlatform =~ /^alpha-/ &&
770 ! $magic_rdata_seen &&
771 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
772 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
773 $magic_rdata_seen = 1;
776 # pick some end-things and move them to the next chunk
778 # pin a funny end-thing on (for easier matching):
779 $c .= 'FUNNY#END#THING';
781 while ( $c =~ /$TMOVEDIRVS[@]?FUNNY#END#THING/o ) { # [@]? is a silly hack to avoid having to use curlies for T_PRE_APP
782 # (this SEGVs perl4 on alphas, you see)
785 if ( $i < ($numchks - 1)
786 && ( $to_move =~ /$TCOPYDIRVS/
787 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
788 $chk[$i + 1] = $to_move . $chk[$i + 1];
789 # otherwise they're tossed
792 $c =~ s/$TMOVEDIRVS[@]?FUNNY#END#THING/FUNNY#END#THING/o; # [@]? is a hack (see above)
795 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
797 # toss all prologue stuff, except for loading gp, and the ..ng address
798 if (($p, $r) = split(/^\t\.prologue/, $c)) {
799 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
800 $c = $keep . "..ng:\n";
802 print STDERR "malformed code block ($ent)?\n"
805 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
808 $c =~ s/FUNNY#END#THING//;
810 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
812 $chk[$i] = $c; # update w/ convenience copy
815 if ( $TargetPlatform =~ /^alpha-/ ) {
816 # print out the header stuff first
817 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
818 print OUTASM $chk[0];
820 } elsif ( $TargetPlatform =~ /^hppa/ ) {
821 print OUTASM $chk[0];
823 } elsif ( $TargetPlatform =~ /^mips-/ ) {
824 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
826 # get rid of horrible "<dollar>Revision: .*$" strings
827 local(@lines0) = split(/\n/, $chk[0]);
829 while ( $z <= $#lines0 ) {
830 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
833 while ( $z <= $#lines0 ) {
835 last if $lines0[$z] =~ /[,\t]0x0$/;
841 $chk[0] = join("\n", @lines0);
842 $chk[0] =~ s/\n\n+/\n/;
843 print OUTASM $chk[0];
846 # print out all the literal strings next
847 for ($i = 0; $i < $numchks; $i++) {
848 if ( $chkcat[$i] eq 'literal' ) {
849 print OUTASM $T_HDR_literal, $chk[$i];
850 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
852 $chkcat[$i] = 'DONE ALREADY';
856 # on the HPPA, print out all the bss next
857 if ( $TargetPlatform =~ /^hppa/ ) {
858 for ($i = 1; $i < $numchks; $i++) {
859 if ( $chkcat[$i] eq 'bss' ) {
860 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
861 print OUTASM $chk[$i];
863 $chkcat[$i] = 'DONE ALREADY';
868 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
869 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
871 next if $chkcat[$i] eq 'DONE ALREADY';
873 if ( $chkcat[$i] eq 'misc' ) {
874 if ($chk[$i] ne '') {
875 print OUTASM $T_HDR_misc;
876 if ($TargetPlatform =~ /^powerpc-|^rs6000/) {
877 $chksymb[$i] =~ s/://;
878 #new if ($chksymb[$i] =~ /ret.*upd/ || $KNOWN_FUNNY_THING{$chksymb[$i]}
879 #new || $chksymb[$i] =~ /^$.{T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o )
880 #new { print OUTASM "\t\.globl $chksymb[$i]\n"; }
881 # if ($chksymb[$i] ne '' && $chksymb[$i] !~ /ret_[a-z]/ && $chksymb[$i] !~ /djn_[a-z]/)
882 if ($chksymb[$i] ne '')
883 { print OUTASM "\t\.globl \.$chksymb[$i]\n"; };
884 if ($chk[$i] =~ /TOC\[tc0\], 0\n/)
885 { ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$i]); $printDS = 1;}
886 else { $r = $chk[$i]; $printDS = 0; };
887 $chk[$i] = &mangle_powerpc_tailjump($r);
889 &print_doctored($chk[$i], 0);
890 if ($TargetPlatform =~ /^powerpc-|^rs6000-/ && $printDS) {
891 #ok if ($chksymb[$i] !~ /\_regMain/) {
892 print OUTASM "\.csect ${chksymb[$i]}[DS]\n";
893 print OUTASM "${p}TOC[tc0], 0\n";
898 } elsif ( $chkcat[$i] eq 'toss' ) {
899 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
901 } elsif ( $chkcat[$i] eq 'data' ) {
902 if ($chk[$i] ne '') {
903 print OUTASM $T_HDR_data;
904 print OUTASM $chk[$i];
907 } elsif ( $chkcat[$i] eq 'consist' ) {
908 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
909 local($consist) = "$1.$2.$3";
911 $consist =~ s/\//./g;
913 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
915 # Using a cygnus-2.7-96q4 gcc build on hppas, the
916 # consistency chunk for ghc_cc_ID often (but not always!)
917 # gets lumped with a bunch of .IMPORT directives containing info on
918 # the code or data space nature of external symbols. We can't
919 # toss these, so once the consistency ID has been turned into
920 # a representable symbol, we substitute it for the symbol
921 # that the string was attached to in the first place (ghc_cc_ID.)
922 # (The original string is also substituted away.)
924 # This change may affect the code output on other platforms in
925 # adverse ways, hence we restrict this hack hppa targets only.
928 if ( $TargetPlatform =~ /^hppa/ ) {
929 $chk[$i] =~ s/^$TUS[@]?ghc.*c_ID$TPOSTLBL/$consist/o;
930 $chk[$i] =~ s/\t$T_hsc_cc_PAT/$T_HDR_misc/o;
931 $consist = $chk[$i]; #clumsily
933 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
935 } elsif ( $TargetPlatform !~ /^(mips)-/ ) { # we just don't try in those case (ToDo)
936 # on mips: consistency string is just a v
937 # horrible bunch of .bytes,
938 # which I am too lazy to sort out (WDP 95/05)
940 print STDERR "Couldn't grok consistency: ", $chk[$i];
943 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
944 # we can just re-constitute this one...
945 # NB: we emit _three_ underscores no matter what,
946 # so ghc-split doesn't have to care.
947 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
949 } elsif ( $chkcat[$i] eq 'closure'
950 || $chkcat[$i] eq 'infotbl'
951 || $chkcat[$i] eq 'slow'
952 || $chkcat[$i] eq 'fast' ) { # do them in that order
953 $symb = $chksymb[$i];
956 if ( defined($closurechk{$symb}) ) {
957 print OUTASM $T_HDR_closure;
958 print OUTASM $chk[$closurechk{$symb}];
959 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
963 if ( defined($infochk{$symb}) ) {
965 print OUTASM $T_HDR_info;
966 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
967 if ( !defined($slowchk{$symb}) && defined($fastchk{$symb}) ) {
968 $fastname = $chk[$fastchk{$symb}];
969 $fastname =~ s/([_A-Za-z]*_fast\d+):.*(.*\n)*/\1/;
970 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long $fastname/;
972 $chk[$infochk{$symb}] =~ s/\.long ([_A-Za-z]\S+_entry)/\.long \.\1/;
973 $chk[$infochk{$symb}] =~ s/\.long ([A-Za-z]\S+_upd)/\.long \.\1/;
974 $chk[$infochk{$symb}] =~ s/\.long (IndUpdRet\S+)/\.long \.\1/;
975 $chk[$infochk{$symb}] =~ s/\.long StdErrorCode/\.long \.StdErrorCode/;
976 $chk[$infochk{$symb}] =~ s/\.long UpdErr/\.long \.UpdErr/;
977 print OUTASM $chk[$infochk{$symb}];
979 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
981 # entry code will be put here!
984 if ( $chk[$infochk{$symb}] =~ /$TDOTWORD[@]?\s+([A-Za-z0-9_]+_entry)$/o
985 && $1 ne "${T_US}${symb}_entry" ) {
986 print STDERR "!!! entry point???\n",$chk[$infochk{$symb}];
989 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
993 if ( defined($slowchk{$symb}) ) {
995 # teach it to drop through to the fast entry point:
996 $c = $chk[$slowchk{$symb}];
998 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
999 ($p, $r) = split(/TOC\[tc0\], 0\n/, $c);
1000 if ($symb =~ /^[_A-Z]/)
1002 print OUTASM "\t\.globl \.${chksymb[$i]}_entry\n";
1003 print OUTASM "\.csect ${symb}_entry[DS]\n";
1004 print OUTASM "${p}TOC[tc0], 0\n";
1006 $r =~ s/\.csect \.text\[PR\]\n//; # todo: properly - andre
1007 $c = &mangle_powerpc_tailjump($r);
1010 if ( defined($fastchk{$symb}) ) {
1011 if ( $TargetPlatform =~ /^alpha-/ ) {
1012 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1013 } elsif ( $TargetPlatform =~ /^hppa/ ) {
1014 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
1015 } elsif ( $TargetPlatform =~ /^i386-/ ) {
1016 # Reg alloc depending, gcc generated code may jump to the fast entry point via
1017 # a number of registers.
1018 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edx\n\tjmp \*\%edx\n//;
1019 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%ecx\n\tjmp \*\%ecx\n//;
1020 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%eax\n\tjmp \*\%eax\n//;
1021 # The next two only apply if we're not stealing %esi or %edi.
1022 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%esi\n\tjmp \*\%esi\n// if ($StolenX86Regs < 3);
1023 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edi\n\tjmp \*\%edi\n// if ($StolenX86Regs < 4);
1024 } elsif ( $TargetPlatform =~ /^mips-/ ) {
1025 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
1026 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
1027 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
1028 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
1029 } elsif ( $TargetPlatform =~ /^powerpc-|^rs6000-/ ) {
1030 $c =~ s/^\tb \.${T_US}${symb}_fast\d+\n//;
1031 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
1032 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
1033 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
1035 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
1039 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
1040 # On alphas, hppa: no very good way to look for "dangling"
1041 # references to fast-entry point.
1042 # (questionable re hppa and mips...)
1043 print STDERR "still has jump to fast entry point:\n$c"
1044 if $c =~ /$TUS[@]?$symb[@]?_fast/; # NB: paranoia
1047 print OUTASM $T_HDR_entry;
1049 &print_doctored($c, 1); # NB: the 1!!!
1051 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
1055 if ( defined($fastchk{$symb}) ) {
1056 $c = $chk[$fastchk{$symb}];
1057 if ( ! defined($slowchk{$symb})
1058 # ToDo: the || clause can go once we're no longer
1059 # concerned about producing exactly the same output as before
1060 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
1062 print OUTASM $T_HDR_fast;
1064 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1065 local(@lbls) = split(/:/, $c);
1066 $fullname = $lbls[0];
1067 $fullname =~ s/$T_MOVE_DIRVS//g;
1068 if ( $fullname =~ /^[A-Z]/)
1069 { print OUTASM "\t\.globl \.${fullname}\n";
1071 # print OUTASM "\t\.lglobl \.${fullname}\n"; #todo: rm - andre
1073 $c =~ s/((.*\n)*)\t.long \S+, TOC\[tc0\], 0\n\.csect \.text\[PR\]\n((.*\n)*)/\1\3/;
1074 $c = &mangle_powerpc_tailjump($c);
1076 &print_doctored($c, 0);
1077 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
1080 } elsif ( $chkcat[$i] eq 'vector'
1081 || $chkcat[$i] eq 'direct' ) { # do them in that order
1082 $symb = $chksymb[$i];
1085 if ( defined($vectorchk{$symb}) ) {
1086 print OUTASM $T_HDR_vector;
1087 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1088 if ( $symb =~ /^[A-Z]/) {
1089 print OUTASM "\t\.globl \.vtbl_${symb}\n";
1090 print OUTASM "\t\.globl vtbl_${symb}\n";
1092 $chk[$vectorchk{$symb}] =~ s/\.long (\S+)/\.long \.\1/g;
1093 print OUTASM ".vtbl_${symb}:\n";
1094 print OUTASM $chk[$vectorchk{$symb}];
1096 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
1098 # direct return code will be put here!
1099 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
1103 if ( defined($directchk{$symb}) ) {
1104 print OUTASM $T_HDR_direct;
1105 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1106 ($p, $r) = split(/TOC\[tc0\], 0\n/, $chk[$directchk{$symb}]);
1107 &print_doctored($r, 0);
1108 print OUTASM "\.csect ${symb}DirectReturn[DS]\n";
1109 print OUTASM "${p}TOC[tc0], 0\n";
1111 &print_doctored($chk[$directchk{$symb}], 0);
1113 $chkcat[$directchk{$symb}] = 'DONE ALREADY';
1115 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
1116 # Alphas: the commented nop is for the splitter, to ensure
1117 # that no module ends with a label as the very last
1118 # thing. (The linker will adjust the label to point
1119 # to the first code word of the next module linked in,
1120 # even if alignment constraints cause the label to move!)
1122 print OUTASM "\t# nop\n";
1125 } elsif ( $chkcat[$i] eq 'toc' ) {
1126 # silly optimisation to print tocs, since they come in groups...
1127 print OUTASM $T_HDR_toc;
1129 while ($chkcat[$j] eq 'toc')
1130 { if ( $chk[$j] !~ /\.tc UpdatePAP\[TC\]/ # not needed: always turned into a jump.
1133 print OUTASM $chk[$j];
1135 $chkcat[$j] = 'DONE ALREADY';
1140 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
1144 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
1146 if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
1147 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
1151 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1152 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1157 sub mash_hppa_prologue { # OK, epilogue, too
1160 # toss all prologue stuff
1161 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
1163 # Lie about our .CALLINFO
1164 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
1171 # toss all epilogue stuff
1172 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
1174 # Sorry; we moved the _info stuff to the code segment.
1175 s/_info,DATA/_info,CODE/g;
1182 sub print_doctored {
1183 local($_, $need_fallthru_patch) = @_;
1185 if ( $TargetPlatform !~ /^i386-/
1186 || ! /^\t[a-z]/ ) { # no instructions in here, apparently
1190 # OK, must do some x86 **HACKING**
1192 local($entry_patch) = '';
1193 local($exit_patch) = '';
1194 local($call_entry_patch)= '';
1195 local($call_exit_patch) = '';
1196 local($gc_call_entry_patch)= ''; # Patches before and after calls to Perform_GC_wrapper
1197 local($gc_call_exit_patch) = '';
1199 #OLD: # first, convert calls to *very magic form*: (ToDo: document
1203 # call _?PerformGC_wrapper
1207 # call _?PerformGC_wrapper
1209 # The reason we do this now is to remove the apparent use of
1210 # %esp, which would throw off the "what patch code do we need"
1213 # Special macros in ghc/includes/COptWraps.lh, used in
1214 # ghc/runtime/CallWrap_C.lc, are required for this to work!
1217 s/^\tpushl \$(\d+)\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \$$1,\%eax\n\tcall ${T_DO_GC}\n/go;
1218 s/^\tpushl \%eax\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tcall ${T_DO_GC}\n/go;
1219 s/^\tpushl \%edx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%edx,\%eax\n\tcall ${T_DO_GC}\n/go;
1221 #= if ( $StolenX86Regs <= 4 ) { # %ecx is ordinary reg
1222 #= s/^\tpushl \%ecx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%ecx,\%eax\n\tcall ${T_DO_GC}\n/go;
1225 # gotta watch out for weird instructions that
1226 # invisibly smash various regs:
1227 # rep* %ecx used for counting
1228 # scas* %edi used for destination index
1229 # cmps* %e[sd]i used for indices
1230 # loop* %ecx used for counting
1235 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1237 # * GCC used an "STG reg" for its own purposes
1239 # * some secret uses of machine reg, requiring STG reg
1240 # to be saved/restored
1242 # The most dangerous "GCC uses" of an "STG reg" are when
1243 # the reg holds the target of a jmp -- it's tricky to
1244 # insert the patch-up code before we get to the target!
1245 # So here we change the jmps:
1247 # --------------------------------------------------------
1248 # it can happen that we have jumps of the form...
1249 # jmp *<something involving %esp>
1251 # jmp <something involving another naughty register...>
1253 # a reasonably-common case is:
1255 # movl $_blah,<bad-reg>
1258 # which is easily fixed as:
1260 # sigh! try to hack around it...
1263 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1264 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1265 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1266 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1267 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1268 if /(jmp|call) .*\%esi/;
1270 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1271 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1272 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1273 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1274 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1275 if /(jmp|call) .*\%edi/;
1277 #= if ($StolenX86Regs <= 4 ) { # spurious uses of ecx?
1278 #= s/^\tmovl (.*),\%ecx\n\tjmp \*%ecx\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1279 #= s/^\tjmp \*(-?\d*)\((.*\%ecx.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1280 #= s/^\tjmp \*\%ecx\n/\tmovl \%ecx,\%eax\n\tjmp \*\%eax\n/g;
1281 #= die "$Pgm: (mangler) still have jump involving \%ecx!\n$_"
1282 #= if /(jmp|call) .*\%ecx/;
1285 # OK, now we can decide what our patch-up code is going to
1288 # Offsets into register table - you'd better update these magic
1289 # numbers should you change its contents!
1290 local($OFFSET_R1)=48;
1291 local($OFFSET_SpA)=80;
1293 # Note funky ".=" stuff; we're *adding* to these _patch guys
1294 if ( $StolenX86Regs <= 2
1295 && ( /${OFFSET_R1}\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1296 $entry_patch .= "\tmovl \%esi,${OFFSET_R1}(\%ebx)\n";
1297 $exit_patch .= "\tmovl ${OFFSET_R1}(\%ebx),\%esi\n";
1299 $gc_call_entry_patch .= "\tmovl \%esi,${OFFSET_R1}(\%ebx)\n";
1300 $gc_call_exit_patch .= "\tmovl ${OFFSET_R1}(\%ebx),\%esi\n";
1302 # nothing for call_{entry,exit} because %esi is callee-save
1304 if ( $StolenX86Regs <= 3
1305 && ( /${OFFSET_SpA}\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # SpA (edi)
1306 $entry_patch .= "\tmovl \%edi,${OFFSET_SpA}(\%ebx)\n";
1307 $exit_patch .= "\tmovl ${OFFSET_SpA}(\%ebx),\%edi\n";
1309 $gc_call_entry_patch .= "\tmovl \%edi,${OFFSET_SpA}(\%ebx)\n";
1310 $gc_call_exit_patch .= "\tmovl ${OFFSET_SpA}(\%ebx),\%edi\n";
1312 # nothing for call_{entry,exit} because %edi is callee-save
1314 local ($OFFSET_Hp) = 96;
1316 #= local ($OFFSET_rSaveECX) = 124;
1317 #= if ( $StolenX86Regs <= 4
1318 #= && ( /${OFFSET_Hp}\(\%ebx\)/ || /\%ecx/ || /^\t(rep|loop)/ ) ) { # Hp (ecx)
1319 #= $entry_patch .= "\tmovl \%ecx,${OFFSET_Hp}(\%ebx)\n";
1320 #= $exit_patch .= "\tmovl ${OFFSET_Hp}(\%ebx),\%ecx\n";
1322 #= $call_exit_patch .= "\tmovl \%ecx,${OFFSET_rSaveECX}(\%ebx)\n";
1323 #= $call_entry_patch .= "\tmovl ${OFFSET_rSaveECX}(\%ebx),\%ecx\n";
1324 #= # I have a really bad feeling about this if we ever
1325 #= # have a nested call...
1326 #= # NB: should just hide it somewhere in the C stack.
1328 # --------------------------------------------------------
1329 # next, here we go with non-%esp patching!
1331 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1333 # Actually, call_entry_patch and call_exit_patch never get set,
1334 # so let's nuke this one
1335 # s/^(\tcall .*\n(\taddl \$\d+,\%esp\n)?)/$call_exit_patch$1$call_entry_patch/g; # _all_ calls
1337 # Before calling GC we must set up the exit condition before the call
1338 # and entry condition when we come back
1339 s/^(\tcall ${T_DO_GC}\n(\taddl \$\d+,\%esp\n)?)/$gc_call_exit_patch$1$gc_call_entry_patch/g; # _all_ calls
1341 # fix _all_ non-local jumps:
1343 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1344 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1346 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1348 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1349 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1351 # fix post-PerformGC wrapper (re-)entries ???
1353 if ($StolenX86Regs == 2 ) {
1354 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1355 if /^\t(jmp|call) .*\%e(si|di)/;
1356 #= die "ARGH! Jump uses \%esi, \%edi, or \%ecx with -monly-2-regs:\n$_"
1357 #= if /^\t(jmp|call) .*\%e(si|di|cx)/;
1358 } elsif ($StolenX86Regs == 3 ) {
1359 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1360 if /^\t(jmp|call) .*\%edi/;
1361 #= die "ARGH! Jump uses \%edi or \%ecx with -monly-3-regs:\n$_"
1362 #= if /^\t(jmp|call) .*\%e(di|cx)/;
1363 #= } elsif ($StolenX86Regs == 4 ) {
1364 #= die "ARGH! Jump uses \%ecx with -monly-4-regs:\n$_"
1365 #= if /^\t(jmp|call) .*\%ecx/;
1368 # final peephole fixes
1370 local($OFFSET_R2)=52;
1371 s/^\tmovl \%eax,${OFFSET_R2}\(\%ebx\)\n\tjmp \*${OFFSET_R2}\(\%ebx\)\n/\tmovl \%eax,${OFFSET_R2}\(\%ebx\)\n\tjmp \*\%eax\n/;
1373 # the short form may tickle perl bug:
1374 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1375 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1376 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1377 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1378 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1380 # Hacks to eliminate some reloads of Hp. Worth about 5% code size.
1381 # We could do much better than this, but at least it catches about
1382 # half of the unnecessary reloads.
1383 # Note that these will stop working if either:
1384 # (i) the offset of Hp from BaseReg changes from 80, or
1385 # (ii) the register assignment of BaseReg changes from %ebx
1387 s/^\tmovl ${OFFSET_Hp}\(\%ebx\),\%e.x\n\tmovl \$(.*),(-?[0-9]*)\(\%e.x\)\n\tmovl ${OFFSET_Hp}\(\%ebx\),\%e(.)x/\tmovl ${OFFSET_Hp}\(\%ebx\),\%e$3x\n\tmovl \$$1,$2\(\%e$3x\)/g;
1389 s/^\tmovl ${OFFSET_Hp}\(\%ebx\),\%e(.)x\n\tmovl (.*),\%e(.)x\n\tmovl \%e$3x,(-?[0-9]*\(\%e$1x\))\n\tmovl ${OFFSET_Hp}\(\%ebx\),\%e$1x/\tmovl ${OFFSET_Hp}\(\%ebx\),\%e$1x\n\tmovl $2,\%e$3x\n\tmovl \%e$3x,$4/g;
1391 s/^\tmovl ${OFFSET_Hp}\(\%ebx\),\%edx((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[abc]x)))+)\n\tmovl ${OFFSET_Hp}\(\%ebx\),\%edx/\tmovl ${OFFSET_Hp}\(\%ebx\),\%edx$1/g;
1392 s/^\tmovl ${OFFSET_Hp}\(\%ebx\),\%eax((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[bcd]x)))+)\n\tmovl ${OFFSET_Hp}\(\%ebx\),\%eax/\tmovl ${OFFSET_Hp}\(\%ebx\),\%eax$1/g;
1394 # --------------------------------------------------------
1395 # that's it -- print it
1397 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1401 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1402 print OUTASM $exit_patch;
1403 # ToDo: make it not print if there is a "jmp" at the end
1409 sub init_FUNNY_THINGS {
1410 %KNOWN_FUNNY_THING = (
1411 "${T_US}CheckHeapCode${T_POST_LBL}", 1,
1412 "${T_US}CommonUnderflow${T_POST_LBL}", 1,
1413 "${T_US}Continue${T_POST_LBL}", 1,
1414 "${T_US}EnterNodeCode${T_POST_LBL}", 1,
1415 "${T_US}ErrorIO_call_count${T_POST_LBL}", 1,
1416 "${T_US}ErrorIO_innards${T_POST_LBL}", 1,
1417 "${T_US}IndUpdRetDir${T_POST_LBL}", 1,
1418 "${T_US}IndUpdRetV0${T_POST_LBL}", 1,
1419 "${T_US}IndUpdRetV1${T_POST_LBL}", 1,
1420 "${T_US}IndUpdRetV2${T_POST_LBL}", 1,
1421 "${T_US}IndUpdRetV3${T_POST_LBL}", 1,
1422 "${T_US}IndUpdRetV4${T_POST_LBL}", 1,
1423 "${T_US}IndUpdRetV5${T_POST_LBL}", 1,
1424 "${T_US}IndUpdRetV6${T_POST_LBL}", 1,
1425 "${T_US}IndUpdRetV7${T_POST_LBL}", 1,
1426 "${T_US}PrimUnderflow${T_POST_LBL}", 1,
1427 "${T_US}StackUnderflowEnterNode${T_POST_LBL}", 1,
1428 "${T_US}StdErrorCode${T_POST_LBL}", 1,
1429 "${T_US}UnderflowVect0${T_POST_LBL}", 1,
1430 "${T_US}UnderflowVect1${T_POST_LBL}", 1,
1431 "${T_US}UnderflowVect2${T_POST_LBL}", 1,
1432 "${T_US}UnderflowVect3${T_POST_LBL}", 1,
1433 "${T_US}UnderflowVect4${T_POST_LBL}", 1,
1434 "${T_US}UnderflowVect5${T_POST_LBL}", 1,
1435 "${T_US}UnderflowVect6${T_POST_LBL}", 1,
1436 "${T_US}UnderflowVect7${T_POST_LBL}", 1,
1437 "${T_US}UpdErr${T_POST_LBL}", 1,
1438 "${T_US}UpdatePAP${T_POST_LBL}", 1,
1439 "${T_US}_Enter_Internal${T_POST_LBL}", 1,
1440 "${T_US}_PRMarking_MarkNextAStack${T_POST_LBL}", 1,
1441 "${T_US}_PRMarking_MarkNextBStack${T_POST_LBL}", 1,
1442 "${T_US}_PRMarking_MarkNextCAF${T_POST_LBL}", 1,
1443 "${T_US}_PRMarking_MarkNextGA${T_POST_LBL}", 1,
1444 "${T_US}_PRMarking_MarkNextRoot${T_POST_LBL}", 1,
1445 "${T_US}_PRMarking_MarkNextSpark${T_POST_LBL}", 1,
1446 "${T_US}_PRMarking_MarkNextEvent${T_POST_LBL}", 1,
1447 "${T_US}_PRMarking_MarkNextClosureInFetchBuffer${T_POST_LBL}", 1,
1448 "${T_US}_Scavenge_Forward_Ref${T_POST_LBL}", 1,
1449 "${T_US}__std_entry_error__${T_POST_LBL}", 1,
1450 "${T_US}_startMarkWorld${T_POST_LBL}", 1,
1451 "${T_US}resumeThread${T_POST_LBL}", 1,
1452 "${T_US}startCcRegisteringWorld${T_POST_LBL}", 1,
1453 "${T_US}startEnterFloat${T_POST_LBL}", 1,
1454 "${T_US}startEnterInt${T_POST_LBL}", 1,
1455 "${T_US}startPerformIO${T_POST_LBL}", 1,
1456 "${T_US}startStgWorld${T_POST_LBL}", 1,
1457 "${T_US}stopPerformIO${T_POST_LBL}", 1,
1458 "${T_US}ShouldCompile_Z36d1z5${T_POST_LBL}", 1
1463 The following table reversal is used for both info tables and return
1464 vectors. In both cases, we remove the first entry from the table,
1465 reverse the table, put the label at the end, and paste some code
1466 (that which is normally referred to by the first entry in the table)
1467 right after the table itself. (The code pasting is done elsewhere.)
1471 local($symb, $tbl, $discard1) = @_;
1473 local($before) = '';
1475 local(@imports) = (); # hppa only
1478 local(@lines) = split(/\n/, $tbl);
1479 local($i, $j); #local ($i, $extra, $words_to_pad, $j);
1481 # see comment in mangleAsm as to why this silliness is needed.
1482 local($TDOTWORD) = ${T_DOT_WORD};
1483 local($TDOTGLOBAL) = ${T_DOT_GLOBAL};
1484 local($TUS) = ${T_US};
1485 local($TPOSTLBL) = ${T_POST_LBL};
1487 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t$TDOTWORD\s+/o; $i++) {
1488 $label .= $lines[$i] . "\n",
1489 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info$TPOSTLBL[@]?$/o
1490 || $lines[$i] =~ /$TDOTGLOBAL/o
1491 || $lines[$i] =~ /^$TUS[@]?vtbl_\S+$TPOSTLBL[@]?$/o;
1493 $before .= $lines[$i] . "\n"; # otherwise...
1496 if ( $TargetPlatform !~ /^hppa/ ) {
1497 for ( ; $i <= $#lines && $lines[$i] =~ /^\t$TDOTWORD\s+/o; $i++) {
1498 push(@words, $lines[$i]);
1500 } else { # hppa weirdness
1501 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1502 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1503 push(@imports, $lines[$i]);
1505 # We don't use HP's ``function pointers''
1506 # We just use labels in code space, like normal people
1507 $lines[$i] =~ s/P%//;
1508 push(@words, $lines[$i]);
1513 # now throw away the first word (entry code):
1514 shift(@words) if $discard1;
1516 # Padding removed to reduce code size and improve performance on Pentiums.
1518 # for 486-cache-friendliness, we want our tables aligned
1519 # on 16-byte boundaries (.align 4). Let's pad:
1520 # $extra = ($#words + 1) % 4;
1521 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1522 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1524 for (; $i <= $#lines; $i++) {
1525 $after .= $lines[$i] . "\n";
1528 # Alphas:If we have anonymous text (not part of a procedure), the
1529 # linker may complain about missing exception information. Bleh.
1530 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1531 $before = "\t.ent $1\n" . $before;
1532 $after .= "\t.end $1\n";
1536 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1537 . join("\n", (reverse @words)) . "\n"
1540 # print STDERR "before=$before\n";
1541 # print STDERR "label=$label\n";
1542 # print STDERR "words=",(reverse @words),"\n";
1543 # print STDERR "after=$after\n";
1550 sub mini_mangle_asm_i386 {
1551 local($in_asmf, $out_asmf) = @_;
1553 &init_TARGET_STUFF();
1555 # see mangleAsm comment
1556 local($TUS) = ${T_US};
1557 local($TPOSTLBL)=${T_POST_LBL};
1559 open(INASM, "< $in_asmf")
1560 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1561 open(OUTASM,"> $out_asmf")
1562 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1568 /^$TUS[@]?(PerformGC|StackOverflow|Yield|PerformReschedule)_wrapper$TPOSTLBL\n/o;
1569 print OUTASM "\tmovl \%esp, ${T_US}__temp_esp\n";
1570 print OUTASM "\tmovl \%eax, ${T_US}__temp_eax\n";
1574 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1575 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1579 The HP is a major nuisance. The threaded code mangler moved info
1580 tables from data space to code space, but unthreaded code in the RTS
1581 still has references to info tables in data space. Since the HP
1582 linker is very precise about where symbols live, we need to patch the
1583 references in the unthreaded RTS as well.
1586 sub mini_mangle_asm_hppa {
1587 local($in_asmf, $out_asmf) = @_;
1589 open(INASM, "< $in_asmf")
1590 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1591 open(OUTASM,"> $out_asmf")
1592 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1595 s/_info,DATA/_info,CODE/; # Move _info references to code space
1601 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1602 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1608 sub mini_mangle_asm_powerpc {
1609 local($in_asmf, $out_asmf) = @_;
1611 open(INASM, "< $in_asmf")
1612 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1613 open(OUTASM,"> $out_asmf")
1614 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1617 s/long _PRStart/long ._PRStart/;
1618 s/long _PRIn_/long ._PRIn_/;
1619 s/long _Dummy_(\S+)_entry/long ._Dummy_\1_entry/;
1620 s/long _PRMarking_MarkNextRoot\[DS\]/long ._PRMarking_MarkNextRoot/;
1621 s/long _PRMarking_MarkNextCAF\[DS\]/long ._PRMarking_MarkNextCAF/;
1622 s/long _PRMarking_MarkNextAStack\[DS\]/long ._PRMarking_MarkNextAStack/;
1623 s/long _PRMarking_MarkNextBStack\[DS\]/long ._PRMarking_MarkNextBStack/;
1624 s/\.tc EnterNodeCode\[TC]\,EnterNodeCode\[DS\]/\.tc EnterNodeCode\[TC]\,.EnterNodeCode/; # CONC
1625 s/\.tc CheckHeapCode\[TC]\,CheckHeapCode\[DS\]/\.tc CheckHeapCode\[TC]\,.CheckHeapCode/; # CONC
1630 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1631 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1634 sub mangle_powerpc_tailjump {
1636 local($maybe_more) = 1;
1637 while (($c =~ /\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n/) && $maybe_more)
1640 $lcsymb =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1641 # the checks for r1 and r2 are mostly paranoia...
1643 $r1 =~ s/(.*\n)*\tlw?z? (\d+),LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n(.*\n)*/\2/;
1645 $r2 =~ s/(.*\n)*\tlw?z? \d+,LC\.\.(\d+)\(2\)\n\tmtctr (\d+)\n\tbctr\n(.*\n)*/\3/;
1648 $c =~ s/((.*\n)*)\tlw?z? \d+,LC\.\.\d+\(2\)\n\tmtctr \d+\n\tbctr\n((.*\n)*)/\1\tb $tocequiv{$lcsymb}\n\3/;
1654 # make "require"r happy...