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|cygwin32)/ ) {
109 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
110 $T_US = '_'; # _ if symbols have an underscore on the front
111 $T_DO_GC = '_PerformGC_wrapper';
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*(\.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';
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_info = "\.text\n\t\.align 2\n"; # NB: requires padding
130 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
131 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
132 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
133 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
135 #--------------------------------------------------------#
136 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux)$/ ) {
138 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
139 $T_US = ''; # _ if symbols have an underscore on the front
140 $T_DO_GC = 'PerformGC_wrapper';
141 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
142 ($TargetPlatform =~ /-linux$/) ? '#' : '/' ;
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*(\.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 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
153 $T_DOT_WORD = '\.long';
154 $T_DOT_GLOBAL = '\.globl';
155 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
156 $T_HDR_misc = "\.text\n\t\.align 16\n";
157 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
158 $T_HDR_consist = "\.text\n";
159 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
160 $T_HDR_info = "\.text\n\t\.align 16\n"; # NB: requires padding
161 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
162 $T_HDR_fast = "\.text\n\t\.align 16\n";
163 $T_HDR_vector = "\.text\n\t\.align 16\n"; # NB: requires padding
164 $T_HDR_direct = "\.text\n\t\.align 16\n";
166 #--------------------------------------------------------#
167 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
169 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
170 $T_US = '_'; # _ if symbols have an underscore on the front
171 $T_DO_GC = '_PerformGC_wrapper';
172 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
173 $T_CONST_LBL = '^LC(\d+):$';
176 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
177 $T_COPY_DIRVS = '\.(globl|proc|stab)';
178 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
180 $T_DOT_WORD = '\.long';
181 $T_DOT_GLOBAL = '\.globl';
182 $T_HDR_literal = "\.text\n\t\.even\n";
183 $T_HDR_misc = "\.text\n\t\.even\n";
184 $T_HDR_data = "\.data\n\t\.even\n";
185 $T_HDR_consist = "\.text\n";
186 $T_HDR_closure = "\.data\n\t\.even\n";
187 $T_HDR_info = "\.text\n\t\.even\n";
188 $T_HDR_entry = "\.text\n\t\.even\n";
189 $T_HDR_fast = "\.text\n\t\.even\n";
190 $T_HDR_vector = "\.text\n\t\.even\n";
191 $T_HDR_direct = "\.text\n\t\.even\n";
193 #--------------------------------------------------------#
194 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
196 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
197 $T_US = ''; # _ if symbols have an underscore on the front
198 $T_DO_GC = 'PerformGC_wrapper';
199 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
200 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
203 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
204 $T_COPY_DIRVS = '\.(globl|ent)';
206 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
207 $T_DOT_WORD = '\.word';
208 $T_DOT_GLOBAL = '^\t\.globl';
209 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
210 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
211 $T_HDR_data = "\t\.data\n\t\.align 2\n";
212 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
213 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
214 $T_HDR_info = "\t\.text\n\t\.align 2\n";
215 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
216 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
217 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
218 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
220 #--------------------------------------------------------#
221 } elsif ( $TargetPlatform =~ /^powerpc-.*/ ) {
223 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
224 $T_US = ''; # _ if symbols have an underscore on the front
225 $T_DO_GC = 'PerformGC_wrapper';
226 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
227 $T_CONST_LBL = '^LC\.\.(\d+):$'; # regexp for what such a lbl looks like
230 $T_MOVE_DIRVS = '^(\s*(\.toc|.csect \S+|\.l?globl \S+|\.align \d+)\n)';
231 $T_COPY_DIRVS = '\.(l?globl)';
233 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
234 $T_DOT_WORD = '\.long';
235 $T_DOT_GLOBAL = '\.globl';
236 $T_HDR_literal = "\.section\t\.rodata\n";
237 $T_HDR_misc = "\.text\n\t\.align 2\n";
238 $T_HDR_data = "\.data\n\t\.align 2\n";
239 $T_HDR_consist = "\.text\n";
240 $T_HDR_closure = "\.data\n\t\.align 2\n";
241 $T_HDR_info = "\.text\n\t\.align 2\n";
242 $T_HDR_entry = "\.text\n";
243 $T_HDR_fast = "\.text\n\t\.align 2\n";
244 $T_HDR_vector = "\.text\n\t\.align 2\n";
245 $T_HDR_direct = "\.text\n\t\.align 2\n";
247 #--------------------------------------------------------#
248 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
250 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
251 $T_US = ''; # _ if symbols have an underscore on the front
252 $T_DO_GC = 'PerformGC_wrapper';
253 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
254 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
257 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
258 $T_COPY_DIRVS = '\.(global|proc|stab)';
260 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
261 $T_DOT_WORD = '\.word';
262 $T_DOT_GLOBAL = '^\t\.global';
263 $T_HDR_literal = "\.text\n\t\.align 8\n";
264 $T_HDR_misc = "\.text\n\t\.align 4\n";
265 $T_HDR_data = "\.data\n\t\.align 8\n";
266 $T_HDR_consist = "\.text\n";
267 $T_HDR_closure = "\.data\n\t\.align 4\n";
268 $T_HDR_info = "\.text\n\t\.align 4\n";
269 $T_HDR_entry = "\.text\n\t\.align 4\n";
270 $T_HDR_fast = "\.text\n\t\.align 4\n";
271 $T_HDR_vector = "\.text\n\t\.align 4\n";
272 $T_HDR_direct = "\.text\n\t\.align 4\n";
274 #--------------------------------------------------------#
275 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
277 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
278 $T_US = '_'; # _ if symbols have an underscore on the front
279 $T_DO_GC = '_PerformGC_wrapper';
280 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
281 $T_CONST_LBL = '^LC(\d+):$';
284 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
285 $T_COPY_DIRVS = '\.(global|proc|stab)';
286 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
288 $T_DOT_WORD = '\.word';
289 $T_DOT_GLOBAL = '^\t\.global';
290 $T_HDR_literal = "\.text\n\t\.align 8\n";
291 $T_HDR_misc = "\.text\n\t\.align 4\n";
292 $T_HDR_data = "\.data\n\t\.align 8\n";
293 $T_HDR_consist = "\.text\n";
294 $T_HDR_closure = "\.data\n\t\.align 4\n";
295 $T_HDR_info = "\.text\n\t\.align 4\n";
296 $T_HDR_entry = "\.text\n\t\.align 4\n";
297 $T_HDR_fast = "\.text\n\t\.align 4\n";
298 $T_HDR_vector = "\.text\n\t\.align 4\n";
299 $T_HDR_direct = "\.text\n\t\.align 4\n";
301 #--------------------------------------------------------#
303 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
308 print STDERR "T_STABBY: $T_STABBY\n";
309 print STDERR "T_US: $T_US\n";
310 print STDERR "T_DO_GC: $T_DO_GC\n";
311 print STDERR "T_PRE_APP: $T_PRE_APP\n";
312 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
313 print STDERR "T_POST_LBL: $T_POST_LBL\n";
314 if ( $TargetPlatform =~ /^i386-/ ) {
315 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
316 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
317 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
319 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
320 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
321 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
322 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
323 print STDERR "T_HDR_literal: $T_HDR_literal\n";
324 print STDERR "T_HDR_misc: $T_HDR_misc\n";
325 print STDERR "T_HDR_data: $T_HDR_data\n";
326 print STDERR "T_HDR_consist: $T_HDR_consist\n";
327 print STDERR "T_HDR_closure: $T_HDR_closure\n";
328 print STDERR "T_HDR_info: $T_HDR_info\n";
329 print STDERR "T_HDR_entry: $T_HDR_entry\n";
330 print STDERR "T_HDR_fast: $T_HDR_fast\n";
331 print STDERR "T_HDR_vector: $T_HDR_vector\n";
332 print STDERR "T_HDR_direct: $T_HDR_direct\n";
338 %************************************************************************
340 \subsection{Mangle away}
342 %************************************************************************
346 local($in_asmf, $out_asmf) = @_;
348 # multi-line regexp matching:
353 &init_TARGET_STUFF();
354 &init_FUNNY_THINGS();
356 # perl4 on alphas SEGVs when give ${foo} substitutions in patterns.
357 # To avoid them we declare some locals that allows to avoid using curlies.
358 local($TUS) = ${T_US};
359 local($TPOSTLBL) = ${T_POST_LBL};
360 local($TMOVEDIRVS) = ${T_MOVE_DIRVS};
361 local($TPREAPP) = ${T_PRE_APP};
362 local($TCOPYDIRVS) = ${T_COPY_DIRVS};
363 local($TDOTWORD) = ${T_DOT_WORD};
365 open(INASM, "< $in_asmf")
366 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
367 open(OUTASM,"> $out_asmf")
368 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
370 # read whole file, divide into "chunks":
371 # record some info about what we've found...
373 @chk = (); # contents of the chunk
374 $numchks = 0; # number of them
375 @chkcat = (); # what category of thing in each chunk
376 @chksymb = (); # what symbol(base) is defined in this chunk
377 %slowchk = (); # ditto, its regular "slow" entry code
378 %fastchk = (); # ditto, fast entry code
379 %closurechk = (); # ditto, the (static) closure
380 %infochk = (); # given a symbol base, say what chunk its info tbl is in
381 %vectorchk = (); # ditto, return vector table
382 %directchk = (); # ditto, direct return code
383 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
385 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
388 next if $T_STABBY && /^\.stab.*$TUS[@]?__stg_split_marker/o;
389 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
390 next if /$TPREAPP(NO_)?APP/o;
391 next if /^;/ && $TargetPlatform =~ /^hppa/;
393 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc)-/;
395 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-/;
397 if ( $TargetPlatform =~ /^mips-/
398 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
399 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
401 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
402 # duplicated from the bottom
406 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
407 # Alphas: Local labels not to be confused with new chunks
410 # NB: all the rest start with a non-space
412 } elsif ( $TargetPlatform =~ /^mips-/
413 && /^\d+:/ ) { # a funny-looking very-local label
416 } elsif ( /$T_CONST_LBL/o ) {
418 $chkcat[$i] = 'literal';
421 } elsif ( /^$TUS[@]?__stg_split_marker(\d+)$TPOSTLBL[@]?$/o ) {
423 $chkcat[$i] = 'splitmarker';
426 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_info$TPOSTLBL[@]?$/o ) {
429 $chkcat[$i] = 'infotbl';
430 $chksymb[$i] = $symb;
432 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
434 $infochk{$symb} = $i;
436 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_entry$TPOSTLBL[@]?$/o ) {
438 $chkcat[$i] = 'slow';
443 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_fast\d+$TPOSTLBL[@]?$/o ) {
445 $chkcat[$i] = 'fast';
450 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)_closure$TPOSTLBL[@]?$/o ) {
452 $chkcat[$i] = 'closure';
455 $closurechk{$1} = $i;
457 } elsif ( /^$TUS[@]?ghc.*c_ID$TPOSTLBL/o ) {
459 $chkcat[$i] = 'consist';
461 } elsif ( /^($TUS[@]?__gnu_compiled_c|gcc2_compiled\.)$TPOSTLBL/o ) {
464 } elsif ( /^$TUS[@]?ErrorIO_call_count$TPOSTLBL[@]?$/o # HACK!!!!
465 || /^$TUS[A-Za-z0-9_]+\.\d+$TPOSTLBL[@]?$/o
466 || /^$TUS[@]?.*_CAT$TPOSTLBL[@]?$/o # PROF: _entryname_CAT
467 || /^$TUS[@]?CC_.*_struct$TPOSTLBL[@]?$/o # PROF: _CC_ccident_struct
468 || /^$TUS[@]?.*_done$TPOSTLBL[@]?$/o # PROF: _module_done
469 || /^$TUS[@]?_module_registered$TPOSTLBL[@]?$/o # PROF: _module_registered
472 $chkcat[$i] = 'data';
475 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
480 } elsif ( /^$TUS[@]?(ret_|djn_)/o ) {
482 $chkcat[$i] = 'misc';
485 } elsif ( /^$TUS[@]?vtbl_([A-Za-z0-9_]+)$TPOSTLBL[@]?$/o ) {
487 $chkcat[$i] = 'vector';
492 } elsif ( /^$TUS[@]?([A-Za-z0-9_]+)DirectReturn$TPOSTLBL[@]?$/o ) {
494 $chkcat[$i] = 'direct';
499 } elsif ( /^$TUS[@]?[A-Za-z0-9_]+_upd$TPOSTLBL[@]?$/o ) {
501 $chkcat[$i] = 'misc';
504 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
505 && /^(_uname|uname|stat|fstat):/ ) {
506 # for some utterly bizarre reason, this platform
507 # likes to drop little local C routines with these names
508 # into each and every .o file that #includes the
509 # relevant system .h file. Yuck. We just don't
510 # tolerate them in .hc files (which we are processing
511 # here). If you need to call one of these things from
512 # Haskell, make a call to your own C wrapper, then
513 # put that C wrapper (which calls one of these) in a
514 # plain .c file. WDP 95/12
516 $chkcat[$i] = 'toss';
519 } elsif ( /^$TUS[@]?[A-Za-z0-9_]/o
520 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
522 && ( $TargetPlatform !~ /^powerpc/ # ditto
523 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
526 print STDERR "Funny global thing?: $_"
527 unless $KNOWN_FUNNY_THING{$thing}
528 || /^$TUS[@]?_(PRIn|PRStart).*$TPOSTLBL[@]?$/o # pointer reversal GC routines
529 || /^$TUS[@]?CC_.*$TPOSTLBL$/o # PROF: _CC_ccident ([@]? is a silly hack (see above))
530 || /^$TUS[@]?_reg.*$TPOSTLBL$/o; # PROF: __reg<module>
532 $chkcat[$i] = 'misc';
535 } else { # simple line (duplicated at the top)
540 $numchks = $#chk + 1;
542 # the division into chunks is imperfect;
543 # we throw some things over the fence into the next
546 # also, there are things we would like to know
547 # about the whole module before we start spitting
550 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
552 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
554 # Alphas: NB: we start meddling at chunk 1, not chunk 0
555 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
556 # spits a ".quad 0" in after the v first ".rdata"; we
557 # detect this special case (tossing the ".quad 0")!
558 local($magic_rdata_seen) = 0;
560 # HPPAs, MIPSen: also start medding at chunk 1
562 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
563 $c = $chk[$i]; # convenience copy
565 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
567 # toss all prologue stuff; HPPA is pretty weird
569 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
571 # be slightly paranoid to make sure there's
572 # nothing surprising in there
573 if ( $c =~ /--- BEGIN ---/ ) {
574 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
576 if ($TargetPlatform =~ /^i386-/) {
577 $p =~ s/^\tpushl \%edi\n//;
578 $p =~ s/^\tpushl \%esi\n//;
579 $p =~ s/^\tsubl \$\d+,\%esp\n//;
580 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
581 } elsif ($TargetPlatform =~ /^m68k-/) {
582 $p =~ s/^\tlink a6,#-?\d.*\n//;
583 $p =~ s/^\tmovel d2,sp\@-\n//;
584 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
585 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
586 } elsif ($TargetPlatform =~ /^mips-/) {
587 # the .frame/.mask/.fmask that we use is the same
588 # as that produced by GCC for miniInterpret; this
589 # gives GDB some chance of figuring out what happened
590 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
591 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
592 $p =~ s/^\t\.(mask|fmask).*\n//g;
593 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
594 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
595 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
596 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
597 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
598 $p =~ s/__FRAME__/$FRAME/;
600 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
603 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
604 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
606 # glue together what's left
608 $c =~ s/\n\t\n/\n/; # junk blank line
612 if ( $TargetPlatform =~ /^mips-/ ) {
613 # MIPS: first, this basic sequence may occur "--- END ---" or not
614 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
617 # toss all epilogue stuff; again, paranoidly
618 if ( $c =~ /--- END ---/ ) {
619 if (($r, $e) = split(/--- END ---/, $c)) {
620 if ($TargetPlatform =~ /^i386-/) {
622 $e =~ s/^\tpopl \%edi\n//;
623 $e =~ s/^\tpopl \%esi\n//;
624 $e =~ s/^\taddl \$\d+,\%esp\n//;
625 } elsif ($TargetPlatform =~ /^m68k-/) {
626 $e =~ s/^\tunlk a6\n//;
628 } elsif ($TargetPlatform =~ /^mips-/) {
629 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
630 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
631 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
632 $e =~ s/^\tj\t\$31\n//;
634 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
636 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
637 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
639 # glue together what's left
641 $c =~ s/\n\t\n/\n/; # junk blank line
645 # On SPARCs, we don't do --- BEGIN/END ---, we just
646 # toss the register-windowing save/restore/ret* instructions
648 if ( $TargetPlatform =~ /^sparc-/ ) {
649 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
650 # throw away PROLOGUE comments
651 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
654 # On Alphas, the prologue mangling is done a little later (below)
656 # toss all calls to __DISCARD__
657 $c =~ s/^\t(call|jbsr|jal)\s+$TUS[@]?__DISCARD__\n//go;
659 # MIPS: that may leave some gratuitous asm macros around
660 # (no harm done; but we get rid of them to be tidier)
661 $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/
662 if $TargetPlatform =~ /^mips-/;
664 # toss stack adjustment after DoSparks
665 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
666 if $TargetPlatform =~ /^m68k-/; # this looks old...
668 if ( $TargetPlatform =~ /^alpha-/ &&
669 ! $magic_rdata_seen &&
670 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
671 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
672 $magic_rdata_seen = 1;
675 # pick some end-things and move them to the next chunk
677 # pin a funny end-thing on (for easier matching):
678 $c .= 'FUNNY#END#THING';
680 while ( $c =~ /$TMOVEDIRVS[@]?FUNNY#END#THING/o ) { # [@]? is a silly hack to avoid having to use curlies for T_PRE_APP
681 # (this SEGVs perl4 on alphas, you see)
684 if ( $i < ($numchks - 1)
685 && ( $to_move =~ /$TCOPYDIRVS/
686 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
687 $chk[$i + 1] = $to_move . $chk[$i + 1];
688 # otherwise they're tossed
691 $c =~ s/$TMOVEDIRVS[@]?FUNNY#END#THING/FUNNY#END#THING/o; # [@]? is a hack (see above)
694 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
696 # toss all prologue stuff, except for loading gp, and the ..ng address
697 if (($p, $r) = split(/^\t\.prologue/, $c)) {
698 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
699 $c = $keep . "..ng:\n";
701 print STDERR "malformed code block ($ent)?\n"
704 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
707 $c =~ s/FUNNY#END#THING//;
709 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
711 $chk[$i] = $c; # update w/ convenience copy
714 if ( $TargetPlatform =~ /^alpha-/ ) {
715 # print out the header stuff first
716 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
717 print OUTASM $chk[0];
719 } elsif ( $TargetPlatform =~ /^hppa/ ) {
720 print OUTASM $chk[0];
722 } elsif ( $TargetPlatform =~ /^mips-/ ) {
723 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
725 # get rid of horrible "<dollar>Revision: .*$" strings
726 local(@lines0) = split(/\n/, $chk[0]);
728 while ( $z <= $#lines0 ) {
729 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
732 while ( $z <= $#lines0 ) {
734 last if $lines0[$z] =~ /[,\t]0x0$/;
740 $chk[0] = join("\n", @lines0);
741 $chk[0] =~ s/\n\n+/\n/;
742 print OUTASM $chk[0];
745 # print out all the literal strings next
746 for ($i = 0; $i < $numchks; $i++) {
747 if ( $chkcat[$i] eq 'literal' ) {
748 print OUTASM $T_HDR_literal, $chk[$i];
749 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
751 $chkcat[$i] = 'DONE ALREADY';
755 # on the HPPA, print out all the bss next
756 if ( $TargetPlatform =~ /^hppa/ ) {
757 for ($i = 1; $i < $numchks; $i++) {
758 if ( $chkcat[$i] eq 'bss' ) {
759 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
760 print OUTASM $chk[$i];
762 $chkcat[$i] = 'DONE ALREADY';
767 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
768 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
770 next if $chkcat[$i] eq 'DONE ALREADY';
772 if ( $chkcat[$i] eq 'misc' ) {
773 if ($chk[$i] ne '') {
774 print OUTASM $T_HDR_misc;
775 &print_doctored($chk[$i], 0);
778 } elsif ( $chkcat[$i] eq 'toss' ) {
779 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
781 } elsif ( $chkcat[$i] eq 'data' ) {
782 if ($chk[$i] ne '') {
783 print OUTASM $T_HDR_data;
784 print OUTASM $chk[$i];
787 } elsif ( $chkcat[$i] eq 'consist' ) {
788 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
789 local($consist) = "$1.$2.$3";
791 $consist =~ s/\//./g;
793 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
794 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
796 } elsif ( $TargetPlatform !~ /^(mips|powerpc)-/ ) { # we just don't try in those case (ToDo)
797 # on mips: consistency string is just a v
798 # horrible bunch of .bytes,
799 # which I am too lazy to sort out (WDP 95/05)
801 print STDERR "Couldn't grok consistency: ", $chk[$i];
804 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
805 # we can just re-constitute this one...
806 # NB: we emit _three_ underscores no matter what,
807 # so ghc-split doesn't have to care.
808 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
810 } elsif ( $chkcat[$i] eq 'closure'
811 || $chkcat[$i] eq 'infotbl'
812 || $chkcat[$i] eq 'slow'
813 || $chkcat[$i] eq 'fast' ) { # do them in that order
814 $symb = $chksymb[$i];
817 if ( defined($closurechk{$symb}) ) {
818 print OUTASM $T_HDR_closure;
819 print OUTASM $chk[$closurechk{$symb}];
820 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
824 if ( defined($infochk{$symb}) ) {
826 print OUTASM $T_HDR_info;
827 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
828 # entry code will be put here!
831 if ( $chk[$infochk{$symb}] =~ /$TDOTWORD[@]?\s+([A-Za-z0-9_]+_entry)$/o
832 && $1 ne "${T_US}${symb}_entry" ) {
833 print STDERR "!!! entry point???\n",$chk[$infochk{$symb}];
836 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
840 if ( defined($slowchk{$symb}) ) {
842 # teach it to drop through to the fast entry point:
843 $c = $chk[$slowchk{$symb}];
845 if ( defined($fastchk{$symb}) ) {
846 if ( $TargetPlatform =~ /^alpha-/ ) {
847 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
848 } elsif ( $TargetPlatform =~ /^hppa/ ) {
849 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
850 } elsif ( $TargetPlatform =~ /^i386-/ ) {
851 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edx\n\tjmp \*\%edx\n//;
852 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%eax\n\tjmp \*\%eax\n//;
853 } elsif ( $TargetPlatform =~ /^mips-/ ) {
854 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
855 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
856 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
857 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
858 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
859 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
860 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
862 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
866 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
867 # On alphas, hppa: no very good way to look for "dangling"
868 # references to fast-entry point.
869 # (questionable re hppa and mips...)
870 print STDERR "still has jump to fast entry point:\n$c"
871 if $c =~ /$TUS[@]?$symb[@]?_fast/; # NB: paranoia
874 print OUTASM $T_HDR_entry;
876 &print_doctored($c, 1); # NB: the 1!!!
878 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
882 if ( defined($fastchk{$symb}) ) {
883 if ( ! defined($slowchk{$symb})
884 # ToDo: the || clause can go once we're no longer
885 # concerned about producing exactly the same output as before
886 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
888 print OUTASM $T_HDR_fast;
890 &print_doctored($chk[$fastchk{$symb}], 0);
891 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
894 } elsif ( $chkcat[$i] eq 'vector'
895 || $chkcat[$i] eq 'direct' ) { # do them in that order
896 $symb = $chksymb[$i];
899 if ( defined($vectorchk{$symb}) ) {
900 print OUTASM $T_HDR_vector;
901 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
902 # direct return code will be put here!
903 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
907 if ( defined($directchk{$symb}) ) {
908 print OUTASM $T_HDR_direct;
909 &print_doctored($chk[$directchk{$symb}], 0);
910 $chkcat[$directchk{$symb}] = 'DONE ALREADY';
912 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
913 # Alphas: the commented nop is for the splitter, to ensure
914 # that no module ends with a label as the very last
915 # thing. (The linker will adjust the label to point
916 # to the first code word of the next module linked in,
917 # even if alignment constraints cause the label to move!)
919 print OUTASM "\t# nop\n";
923 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
927 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
929 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
930 if $TargetPlatform =~ /^powerpc-/;
933 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
934 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
939 sub mash_hppa_prologue { # OK, epilogue, too
942 # toss all prologue stuff
943 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
945 # Lie about our .CALLINFO
946 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
953 # toss all epilogue stuff
954 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
956 # Sorry; we moved the _info stuff to the code segment.
957 s/_info,DATA/_info,CODE/g;
965 local($_, $need_fallthru_patch) = @_;
967 if ( $TargetPlatform !~ /^i386-/
968 || ! /^\t[a-z]/ ) { # no instructions in here, apparently
972 # OK, must do some x86 **HACKING**
974 local($entry_patch) = '';
975 local($exit_patch) = '';
976 local($call_entry_patch)= '';
977 local($call_exit_patch) = '';
979 #OLD: # first, convert calls to *very magic form*: (ToDo: document
983 # call _?PerformGC_wrapper
987 # call _?PerformGC_wrapper
989 # The reason we do this now is to remove the apparent use of
990 # %esp, which would throw off the "what patch code do we need"
993 # Special macros in ghc/includes/COptWraps.lh, used in
994 # ghc/runtime/CallWrap_C.lc, are required for this to work!
997 s/^\tpushl \$(\d+)\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \$$1,\%eax\n\tcall ${T_DO_GC}\n/go;
998 s/^\tpushl \%eax\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tcall ${T_DO_GC}\n/go;
999 s/^\tpushl \%edx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%edx,\%eax\n\tcall ${T_DO_GC}\n/go;
1001 #= if ( $StolenX86Regs <= 4 ) { # %ecx is ordinary reg
1002 #= s/^\tpushl \%ecx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%ecx,\%eax\n\tcall ${T_DO_GC}\n/go;
1005 # gotta watch out for weird instructions that
1006 # invisibly smash various regs:
1007 # rep* %ecx used for counting
1008 # scas* %edi used for destination index
1009 # cmps* %e[sd]i used for indices
1010 # loop* %ecx used for counting
1015 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1017 # * GCC used an "STG reg" for its own purposes
1019 # * some secret uses of machine reg, requiring STG reg
1020 # to be saved/restored
1022 # The most dangerous "GCC uses" of an "STG reg" are when
1023 # the reg holds the target of a jmp -- it's tricky to
1024 # insert the patch-up code before we get to the target!
1025 # So here we change the jmps:
1027 # --------------------------------------------------------
1028 # it can happen that we have jumps of the form...
1029 # jmp *<something involving %esp>
1031 # jmp <something involving another naughty register...>
1033 # a reasonably-common case is:
1035 # movl $_blah,<bad-reg>
1038 # which is easily fixed as:
1040 # sigh! try to hack around it...
1043 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1044 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1045 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1046 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1047 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1048 if /(jmp|call) .*\%esi/;
1050 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1051 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1052 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1053 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1054 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1055 if /(jmp|call) .*\%edi/;
1057 #= if ($StolenX86Regs <= 4 ) { # spurious uses of ecx?
1058 #= s/^\tmovl (.*),\%ecx\n\tjmp \*%ecx\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1059 #= s/^\tjmp \*(-?\d*)\((.*\%ecx.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1060 #= s/^\tjmp \*\%ecx\n/\tmovl \%ecx,\%eax\n\tjmp \*\%eax\n/g;
1061 #= die "$Pgm: (mangler) still have jump involving \%ecx!\n$_"
1062 #= if /(jmp|call) .*\%ecx/;
1065 # OK, now we can decide what our patch-up code is going to
1067 if ( $StolenX86Regs <= 2
1068 && ( /32\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1069 $entry_patch .= "\tmovl \%esi,32(\%ebx)\n";
1070 $exit_patch .= "\tmovl 32(\%ebx),\%esi\n";
1071 # nothing for call_{entry,exit} because %esi is callee-save
1073 if ( $StolenX86Regs <= 3
1074 && ( /64\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # SpA (edi)
1075 $entry_patch .= "\tmovl \%edi,64(\%ebx)\n";
1076 $exit_patch .= "\tmovl 64(\%ebx),\%edi\n";
1077 # nothing for call_{entry,exit} because %edi is callee-save
1079 #= if ( $StolenX86Regs <= 4
1080 #= && ( /80\(\%ebx\)/ || /\%ecx/ || /^\t(rep|loop)/ ) ) { # Hp (ecx)
1081 #= $entry_patch .= "\tmovl \%ecx,80(\%ebx)\n";
1082 #= $exit_patch .= "\tmovl 80(\%ebx),\%ecx\n";
1084 #= $call_exit_patch .= "\tmovl \%ecx,108(\%ebx)\n";
1085 #= $call_entry_patch .= "\tmovl 108(\%ebx),\%ecx\n";
1086 #= # I have a really bad feeling about this if we ever
1087 #= # have a nested call...
1088 #= # NB: should just hide it somewhere in the C stack.
1090 # --------------------------------------------------------
1091 # next, here we go with non-%esp patching!
1093 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1094 s/^(\tcall .*\n(\taddl \$\d+,\%esp\n)?)/$call_exit_patch$1$call_entry_patch/g; # _all_ calls
1096 # fix _all_ non-local jumps:
1098 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1099 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1101 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1103 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1104 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1106 # fix post-PerformGC wrapper (re-)entries ???
1108 if ($StolenX86Regs == 2 ) {
1109 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1110 if /^\t(jmp|call) .*\%e(si|di)/;
1111 #= die "ARGH! Jump uses \%esi, \%edi, or \%ecx with -monly-2-regs:\n$_"
1112 #= if /^\t(jmp|call) .*\%e(si|di|cx)/;
1113 } elsif ($StolenX86Regs == 3 ) {
1114 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1115 if /^\t(jmp|call) .*\%edi/;
1116 #= die "ARGH! Jump uses \%edi or \%ecx with -monly-3-regs:\n$_"
1117 #= if /^\t(jmp|call) .*\%e(di|cx)/;
1118 #= } elsif ($StolenX86Regs == 4 ) {
1119 #= die "ARGH! Jump uses \%ecx with -monly-4-regs:\n$_"
1120 #= if /^\t(jmp|call) .*\%ecx/;
1123 # final peephole fixes
1125 s/^\tmovl \%eax,36\(\%ebx\)\n\tjmp \*36\(\%ebx\)\n/\tmovl \%eax,36\(\%ebx\)\n\tjmp \*\%eax\n/;
1126 # the short form may tickle perl bug:
1127 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1128 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1129 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1130 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1131 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1133 # Hacks to eliminate some reloads of Hp. Worth about 5% code size.
1134 # We could do much better than this, but at least it catches about
1135 # half of the unnecessary reloads.
1136 # Note that these will stop working if either:
1137 # (i) the offset of Hp from BaseReg changes from 80, or
1138 # (ii) the register assignment of BaseReg changes from %ebx
1140 s/^\tmovl 80\(\%ebx\),\%e.x\n\tmovl \$(.*),(-?[0-9]*)\(\%e.x\)\n\tmovl 80\(\%ebx\),\%e(.)x/\tmovl 80\(\%ebx\),\%e$3x\n\tmovl \$$1,$2\(\%e$3x\)/g;
1142 s/^\tmovl 80\(\%ebx\),\%e(.)x\n\tmovl (.*),\%e(.)x\n\tmovl \%e$3x,(-?[0-9]*\(\%e$1x\))\n\tmovl 80\(\%ebx\),\%e$1x/\tmovl 80\(\%ebx\),\%e$1x\n\tmovl $2,\%e$3x\n\tmovl \%e$3x,$4/g;
1144 s/^\tmovl 80\(\%ebx\),\%edx((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[abc]x)))+)\n\tmovl 80\(\%ebx\),\%edx/\tmovl 80\(\%ebx\),\%edx$1/g;
1145 s/^\tmovl 80\(\%ebx\),\%eax((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[bcd]x)))+)\n\tmovl 80\(\%ebx\),\%eax/\tmovl 80\(\%ebx\),\%eax$1/g;
1147 # --------------------------------------------------------
1148 # that's it -- print it
1150 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1154 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1155 print OUTASM $exit_patch;
1156 # ToDo: make it not print if there is a "jmp" at the end
1162 sub init_FUNNY_THINGS {
1163 %KNOWN_FUNNY_THING = (
1164 "${T_US}CheckHeapCode${T_POST_LBL}", 1,
1165 "${T_US}CommonUnderflow${T_POST_LBL}", 1,
1166 "${T_US}Continue${T_POST_LBL}", 1,
1167 "${T_US}EnterNodeCode${T_POST_LBL}", 1,
1168 "${T_US}ErrorIO_call_count${T_POST_LBL}", 1,
1169 "${T_US}ErrorIO_innards${T_POST_LBL}", 1,
1170 "${T_US}IndUpdRetDir${T_POST_LBL}", 1,
1171 "${T_US}IndUpdRetV0${T_POST_LBL}", 1,
1172 "${T_US}IndUpdRetV1${T_POST_LBL}", 1,
1173 "${T_US}IndUpdRetV2${T_POST_LBL}", 1,
1174 "${T_US}IndUpdRetV3${T_POST_LBL}", 1,
1175 "${T_US}IndUpdRetV4${T_POST_LBL}", 1,
1176 "${T_US}IndUpdRetV5${T_POST_LBL}", 1,
1177 "${T_US}IndUpdRetV6${T_POST_LBL}", 1,
1178 "${T_US}IndUpdRetV7${T_POST_LBL}", 1,
1179 "${T_US}PrimUnderflow${T_POST_LBL}", 1,
1180 "${T_US}StackUnderflowEnterNode${T_POST_LBL}", 1,
1181 "${T_US}StdErrorCode${T_POST_LBL}", 1,
1182 "${T_US}UnderflowVect0${T_POST_LBL}", 1,
1183 "${T_US}UnderflowVect1${T_POST_LBL}", 1,
1184 "${T_US}UnderflowVect2${T_POST_LBL}", 1,
1185 "${T_US}UnderflowVect3${T_POST_LBL}", 1,
1186 "${T_US}UnderflowVect4${T_POST_LBL}", 1,
1187 "${T_US}UnderflowVect5${T_POST_LBL}", 1,
1188 "${T_US}UnderflowVect6${T_POST_LBL}", 1,
1189 "${T_US}UnderflowVect7${T_POST_LBL}", 1,
1190 "${T_US}UpdErr${T_POST_LBL}", 1,
1191 "${T_US}UpdatePAP${T_POST_LBL}", 1,
1192 "${T_US}WorldStateToken${T_POST_LBL}", 1,
1193 "${T_US}_Enter_Internal${T_POST_LBL}", 1,
1194 "${T_US}_PRMarking_MarkNextAStack${T_POST_LBL}", 1,
1195 "${T_US}_PRMarking_MarkNextBStack${T_POST_LBL}", 1,
1196 "${T_US}_PRMarking_MarkNextCAF${T_POST_LBL}", 1,
1197 "${T_US}_PRMarking_MarkNextGA${T_POST_LBL}", 1,
1198 "${T_US}_PRMarking_MarkNextRoot${T_POST_LBL}", 1,
1199 "${T_US}_PRMarking_MarkNextSpark${T_POST_LBL}", 1,
1200 "${T_US}_PRMarking_MarkNextEvent${T_POST_LBL}", 1,
1201 "${T_US}_PRMarking_MarkNextClosureInFetchBuffer${T_POST_LBL}", 1,
1202 "${T_US}_Scavenge_Forward_Ref${T_POST_LBL}", 1,
1203 "${T_US}__std_entry_error__${T_POST_LBL}", 1,
1204 "${T_US}_startMarkWorld${T_POST_LBL}", 1,
1205 "${T_US}resumeThread${T_POST_LBL}", 1,
1206 "${T_US}startCcRegisteringWorld${T_POST_LBL}", 1,
1207 "${T_US}startEnterFloat${T_POST_LBL}", 1,
1208 "${T_US}startEnterInt${T_POST_LBL}", 1,
1209 "${T_US}startPerformIO${T_POST_LBL}", 1,
1210 "${T_US}startStgWorld${T_POST_LBL}", 1,
1211 "${T_US}stopPerformIO${T_POST_LBL}", 1
1216 The following table reversal is used for both info tables and return
1217 vectors. In both cases, we remove the first entry from the table,
1218 reverse the table, put the label at the end, and paste some code
1219 (that which is normally referred to by the first entry in the table)
1220 right after the table itself. (The code pasting is done elsewhere.)
1224 local($symb, $tbl, $discard1) = @_;
1226 local($before) = '';
1228 local(@imports) = (); # hppa only
1231 local(@lines) = split(/\n/, $tbl);
1232 local($i, $extra, $words_to_pad, $j);
1234 # see comment in mangleAsm as to why this silliness is needed.
1235 local($TDOTWORD) = ${T_DOT_WORD};
1236 local($TDOTGLOBAL) = ${T_DOT_GLOBAL};
1237 local($TUS) = ${T_US};
1238 local($TPOSTLBL) = ${T_POST_LBL};
1240 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t$TDOTWORD\s+/o; $i++) {
1241 $label .= $lines[$i] . "\n",
1242 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info$TPOSTLBL[@]?$/o
1243 || $lines[$i] =~ /$TDOTGLOBAL/o
1244 || $lines[$i] =~ /^$TUS[@]?vtbl_\S+$TPOSTLBL[@]?$/o;
1246 $before .= $lines[$i] . "\n"; # otherwise...
1249 if ( $TargetPlatform !~ /^hppa/ ) {
1250 for ( ; $i <= $#lines && $lines[$i] =~ /^\t$TDOTWORD\s+/o; $i++) {
1251 push(@words, $lines[$i]);
1253 } else { # hppa weirdness
1254 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1255 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1256 push(@imports, $lines[$i]);
1258 # We don't use HP's ``function pointers''
1259 # We just use labels in code space, like normal people
1260 $lines[$i] =~ s/P%//;
1261 push(@words, $lines[$i]);
1266 # now throw away the first word (entry code):
1267 shift(@words) if $discard1;
1269 # Padding removed to reduce code size and improve performance on Pentiums.
1271 # for 486-cache-friendliness, we want our tables aligned
1272 # on 16-byte boundaries (.align 4). Let's pad:
1273 # $extra = ($#words + 1) % 4;
1274 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1275 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1277 for (; $i <= $#lines; $i++) {
1278 $after .= $lines[$i] . "\n";
1281 # Alphas:If we have anonymous text (not part of a procedure), the
1282 # linker may complain about missing exception information. Bleh.
1283 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1284 $before = "\t.ent $1\n" . $before;
1285 $after .= "\t.end $1\n";
1289 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1290 . join("\n", (reverse @words)) . "\n"
1293 # print STDERR "before=$before\n";
1294 # print STDERR "label=$label\n";
1295 # print STDERR "words=",(reverse @words),"\n";
1296 # print STDERR "after=$after\n";
1303 sub mini_mangle_asm_i386 {
1304 local($in_asmf, $out_asmf) = @_;
1306 &init_TARGET_STUFF();
1308 # see mangleAsm comment
1309 local($TUS) = ${T_US};
1310 local($TPOSTLBL)=${T_POST_LBL};
1312 open(INASM, "< $in_asmf")
1313 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1314 open(OUTASM,"> $out_asmf")
1315 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1321 /^$TUS[@]?(PerformGC|StackOverflow|Yield|PerformReschedule)_wrapper$TPOSTLBL\n/o;
1322 print OUTASM "\tmovl \%esp, ${T_US}__temp_esp\n";
1323 print OUTASM "\tmovl \%eax, ${T_US}__temp_eax\n";
1327 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1328 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1332 The HP is a major nuisance. The threaded code mangler moved info
1333 tables from data space to code space, but unthreaded code in the RTS
1334 still has references to info tables in data space. Since the HP
1335 linker is very precise about where symbols live, we need to patch the
1336 references in the unthreaded RTS as well.
1339 sub mini_mangle_asm_hppa {
1340 local($in_asmf, $out_asmf) = @_;
1342 open(INASM, "< $in_asmf")
1343 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1344 open(OUTASM,"> $out_asmf")
1345 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1348 s/_info,DATA/_info,CODE/; # Move _info references to code space
1354 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1355 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1358 # make "require"r happy...