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_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\11"\n\t\.ascii\s+"(.*)\\0"' if ($TargetPlatform =~ /^.*-cygwin32/ );
123 $T_DOT_WORD = '\.long';
124 $T_DOT_GLOBAL = '\.globl';
125 $T_HDR_literal = "\.text\n\t\.align 2\n";
126 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
127 $T_HDR_data = "\.data\n\t\.align 2\n";
128 $T_HDR_consist = "\.text\n";
129 $T_HDR_closure = "\.data\n\t\.align 2\n";
130 $T_HDR_info = "\.text\n\t\.align 2\n"; # NB: requires padding
131 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
132 $T_HDR_fast = "\.text\n\t\.align 2,0x90\n";
133 $T_HDR_vector = "\.text\n\t\.align 2\n"; # NB: requires padding
134 $T_HDR_direct = "\.text\n\t\.align 2,0x90\n";
136 #--------------------------------------------------------#
137 } elsif ( $TargetPlatform =~ /^i386-.*-(solaris2|linux)$/ ) {
139 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
140 $T_US = ''; # _ if symbols have an underscore on the front
141 $T_DO_GC = 'PerformGC_wrapper';
142 $T_PRE_APP = # regexp that says what comes before APP/NO_APP
143 ($TargetPlatform =~ /-linux$/) ? '#' : '/' ;
144 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
146 $T_X86_PRE_LLBL_PAT = '\.L';
147 $T_X86_PRE_LLBL = '.L';
148 $T_X86_BADJMP = '^\tjmp [^\.\*]';
150 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+(,0x90)?|\.globl\s+\S+|\.text|\.data|\.section\s+.*|\.type\s+.*|\.Lfe.*\n\t\.size\s+.*|\.size\s+.*|\.ident.*)\n)';
151 $T_COPY_DIRVS = '\.(globl)';
153 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
154 $T_DOT_WORD = '\.long';
155 $T_DOT_GLOBAL = '\.globl';
156 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
157 $T_HDR_misc = "\.text\n\t\.align 16\n";
158 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
159 $T_HDR_consist = "\.text\n";
160 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
161 $T_HDR_info = "\.text\n\t\.align 16\n"; # NB: requires padding
162 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
163 $T_HDR_fast = "\.text\n\t\.align 16\n";
164 $T_HDR_vector = "\.text\n\t\.align 16\n"; # NB: requires padding
165 $T_HDR_direct = "\.text\n\t\.align 16\n";
167 #--------------------------------------------------------#
168 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
170 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
171 $T_US = '_'; # _ if symbols have an underscore on the front
172 $T_DO_GC = '_PerformGC_wrapper';
173 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
174 $T_CONST_LBL = '^LC(\d+):$';
177 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
178 $T_COPY_DIRVS = '\.(globl|proc|stab)';
179 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
181 $T_DOT_WORD = '\.long';
182 $T_DOT_GLOBAL = '\.globl';
183 $T_HDR_literal = "\.text\n\t\.even\n";
184 $T_HDR_misc = "\.text\n\t\.even\n";
185 $T_HDR_data = "\.data\n\t\.even\n";
186 $T_HDR_consist = "\.text\n";
187 $T_HDR_closure = "\.data\n\t\.even\n";
188 $T_HDR_info = "\.text\n\t\.even\n";
189 $T_HDR_entry = "\.text\n\t\.even\n";
190 $T_HDR_fast = "\.text\n\t\.even\n";
191 $T_HDR_vector = "\.text\n\t\.even\n";
192 $T_HDR_direct = "\.text\n\t\.even\n";
194 #--------------------------------------------------------#
195 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
197 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
198 $T_US = ''; # _ if symbols have an underscore on the front
199 $T_DO_GC = 'PerformGC_wrapper';
200 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
201 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
204 $T_MOVE_DIRVS = '^(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
205 $T_COPY_DIRVS = '\.(globl|ent)';
207 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
208 $T_DOT_WORD = '\.word';
209 $T_DOT_GLOBAL = '^\t\.globl';
210 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
211 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
212 $T_HDR_data = "\t\.data\n\t\.align 2\n";
213 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
214 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
215 $T_HDR_info = "\t\.text\n\t\.align 2\n";
216 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
217 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
218 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
219 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
221 #--------------------------------------------------------#
222 } elsif ( $TargetPlatform =~ /^powerpc-.*/ ) {
224 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
225 $T_US = ''; # _ if symbols have an underscore on the front
226 $T_DO_GC = 'PerformGC_wrapper';
227 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
228 $T_CONST_LBL = '^LC\.\.(\d+):$'; # regexp for what such a lbl looks like
231 $T_MOVE_DIRVS = '^(\s*(\.toc|.csect \S+|\.l?globl \S+|\.align \d+)\n)';
232 $T_COPY_DIRVS = '\.(l?globl)';
234 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
235 $T_DOT_WORD = '\.long';
236 $T_DOT_GLOBAL = '\.globl';
237 $T_HDR_literal = "\.section\t\.rodata\n";
238 $T_HDR_misc = "\.text\n\t\.align 2\n";
239 $T_HDR_data = "\.data\n\t\.align 2\n";
240 $T_HDR_consist = "\.text\n";
241 $T_HDR_closure = "\.data\n\t\.align 2\n";
242 $T_HDR_info = "\.text\n\t\.align 2\n";
243 $T_HDR_entry = "\.text\n";
244 $T_HDR_fast = "\.text\n\t\.align 2\n";
245 $T_HDR_vector = "\.text\n\t\.align 2\n";
246 $T_HDR_direct = "\.text\n\t\.align 2\n";
248 #--------------------------------------------------------#
249 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
251 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
252 $T_US = ''; # _ if symbols have an underscore on the front
253 $T_DO_GC = 'PerformGC_wrapper';
254 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
255 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
258 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
259 $T_COPY_DIRVS = '\.(global|proc|stab)';
261 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
262 $T_DOT_WORD = '\.word';
263 $T_DOT_GLOBAL = '^\t\.global';
264 $T_HDR_literal = "\.text\n\t\.align 8\n";
265 $T_HDR_misc = "\.text\n\t\.align 4\n";
266 $T_HDR_data = "\.data\n\t\.align 8\n";
267 $T_HDR_consist = "\.text\n";
268 $T_HDR_closure = "\.data\n\t\.align 4\n";
269 $T_HDR_info = "\.text\n\t\.align 4\n";
270 $T_HDR_entry = "\.text\n\t\.align 4\n";
271 $T_HDR_fast = "\.text\n\t\.align 4\n";
272 $T_HDR_vector = "\.text\n\t\.align 4\n";
273 $T_HDR_direct = "\.text\n\t\.align 4\n";
275 #--------------------------------------------------------#
276 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
278 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
279 $T_US = '_'; # _ if symbols have an underscore on the front
280 $T_DO_GC = '_PerformGC_wrapper';
281 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
282 $T_CONST_LBL = '^LC(\d+):$';
285 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
286 $T_COPY_DIRVS = '\.(global|proc|stab)';
287 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
289 $T_DOT_WORD = '\.word';
290 $T_DOT_GLOBAL = '^\t\.global';
291 $T_HDR_literal = "\.text\n\t\.align 8\n";
292 $T_HDR_misc = "\.text\n\t\.align 4\n";
293 $T_HDR_data = "\.data\n\t\.align 8\n";
294 $T_HDR_consist = "\.text\n";
295 $T_HDR_closure = "\.data\n\t\.align 4\n";
296 $T_HDR_info = "\.text\n\t\.align 4\n";
297 $T_HDR_entry = "\.text\n\t\.align 4\n";
298 $T_HDR_fast = "\.text\n\t\.align 4\n";
299 $T_HDR_vector = "\.text\n\t\.align 4\n";
300 $T_HDR_direct = "\.text\n\t\.align 4\n";
302 #--------------------------------------------------------#
304 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
309 print STDERR "T_STABBY: $T_STABBY\n";
310 print STDERR "T_US: $T_US\n";
311 print STDERR "T_DO_GC: $T_DO_GC\n";
312 print STDERR "T_PRE_APP: $T_PRE_APP\n";
313 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
314 print STDERR "T_POST_LBL: $T_POST_LBL\n";
315 if ( $TargetPlatform =~ /^i386-/ ) {
316 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
317 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
318 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
320 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
321 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
322 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
323 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
324 print STDERR "T_HDR_literal: $T_HDR_literal\n";
325 print STDERR "T_HDR_misc: $T_HDR_misc\n";
326 print STDERR "T_HDR_data: $T_HDR_data\n";
327 print STDERR "T_HDR_consist: $T_HDR_consist\n";
328 print STDERR "T_HDR_closure: $T_HDR_closure\n";
329 print STDERR "T_HDR_info: $T_HDR_info\n";
330 print STDERR "T_HDR_entry: $T_HDR_entry\n";
331 print STDERR "T_HDR_fast: $T_HDR_fast\n";
332 print STDERR "T_HDR_vector: $T_HDR_vector\n";
333 print STDERR "T_HDR_direct: $T_HDR_direct\n";
339 %************************************************************************
341 \subsection{Mangle away}
343 %************************************************************************
347 local($in_asmf, $out_asmf) = @_;
349 # multi-line regexp matching:
352 &init_TARGET_STUFF();
353 &init_FUNNY_THINGS();
355 open(INASM, "< $in_asmf")
356 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
357 open(OUTASM,"> $out_asmf")
358 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
360 # read whole file, divide into "chunks":
361 # record some info about what we've found...
363 @chk = (); # contents of the chunk
364 $numchks = 0; # number of them
365 @chkcat = (); # what category of thing in each chunk
366 @chksymb = (); # what symbol(base) is defined in this chunk
367 %slowchk = (); # ditto, its regular "slow" entry code
368 %fastchk = (); # ditto, fast entry code
369 %closurechk = (); # ditto, the (static) closure
370 %infochk = (); # given a symbol base, say what chunk its info tbl is in
371 %vectorchk = (); # ditto, return vector table
372 %directchk = (); # ditto, direct return code
373 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
375 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
378 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
379 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
380 next if /${T_PRE_APP}(NO_)?APP/o;
382 next if /^;/ && $TargetPlatform =~ /^hppa/;
384 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc)-/;
386 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-/;
388 if ( $TargetPlatform =~ /^mips-/
389 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
390 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
392 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
393 # duplicated from the bottom
397 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
398 # Alphas: Local labels not to be confused with new chunks
401 # NB: all the rest start with a non-space
403 } elsif ( $TargetPlatform =~ /^mips-/
404 && /^\d+:/ ) { # a funny-looking very-local label
407 } elsif ( /$T_CONST_LBL/o ) {
409 $chkcat[$i] = 'literal';
412 } elsif ( /^${T_US}__stg_split_marker(\d+)${T_POST_LBL}$/o ) {
414 $chkcat[$i] = 'splitmarker';
417 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
420 $chkcat[$i] = 'infotbl';
421 $chksymb[$i] = $symb;
423 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
425 $infochk{$symb} = $i;
427 } elsif ( /^${T_US}([A-Za-z0-9_]+)_entry${T_POST_LBL}$/o ) {
429 $chkcat[$i] = 'slow';
434 } elsif ( /^${T_US}([A-Za-z0-9_]+)_fast\d+${T_POST_LBL}$/o ) {
436 $chkcat[$i] = 'fast';
441 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
443 $chkcat[$i] = 'closure';
446 $closurechk{$1} = $i;
448 } elsif ( /^${T_US}ghc.*c_ID${T_POST_LBL}/o ) {
450 $chkcat[$i] = 'consist';
452 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
455 } elsif ( /^${T_US}ErrorIO_call_count${T_POST_LBL}$/o # HACK!!!!
456 || /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
457 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
458 || /^${T_US}CC_.*_struct${T_POST_LBL}$/o # PROF: _CC_ccident_struct
459 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
460 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
463 $chkcat[$i] = 'data';
466 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
471 } elsif ( /^${T_US}(ret_|djn_)/o ) {
473 $chkcat[$i] = 'misc';
476 } elsif ( /^${T_US}vtbl_([A-Za-z0-9_]+)${T_POST_LBL}$/o ) {
478 $chkcat[$i] = 'vector';
483 } elsif ( /^${T_US}([A-Za-z0-9_]+)DirectReturn${T_POST_LBL}$/o ) {
485 $chkcat[$i] = 'direct';
490 } elsif ( /^${T_US}[A-Za-z0-9_]+_upd${T_POST_LBL}$/o ) {
492 $chkcat[$i] = 'misc';
495 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
496 && /^(_uname|uname|stat|fstat):/ ) {
497 # for some utterly bizarre reason, this platform
498 # likes to drop little local C routines with these names
499 # into each and every .o file that #includes the
500 # relevant system .h file. Yuck. We just don't
501 # tolerate them in .hc files (which we are processing
502 # here). If you need to call one of these things from
503 # Haskell, make a call to your own C wrapper, then
504 # put that C wrapper (which calls one of these) in a
505 # plain .c file. WDP 95/12
507 $chkcat[$i] = 'toss';
510 } elsif ( /^${T_US}[A-Za-z0-9_]/o
511 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
513 && ( $TargetPlatform !~ /^powerpc/ # ditto
514 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
517 print STDERR "Funny global thing?: $_"
518 unless $KNOWN_FUNNY_THING{$thing}
519 || /^${T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o # pointer reversal GC routines
520 || /^${T_US}CC_.*${T_POST_LBL}$/o # PROF: _CC_ccident
521 || /^${T_US}_reg.*${T_POST_LBL}$/o; # PROF: __reg<module>
523 $chkcat[$i] = 'misc';
526 } else { # simple line (duplicated at the top)
531 $numchks = $#chk + 1;
533 # the division into chunks is imperfect;
534 # we throw some things over the fence into the next
537 # also, there are things we would like to know
538 # about the whole module before we start spitting
541 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
543 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
545 # Alphas: NB: we start meddling at chunk 1, not chunk 0
546 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
547 # spits a ".quad 0" in after the v first ".rdata"; we
548 # detect this special case (tossing the ".quad 0")!
549 local($magic_rdata_seen) = 0;
551 # HPPAs, MIPSen: also start medding at chunk 1
553 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
554 $c = $chk[$i]; # convenience copy
556 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
558 # toss all prologue stuff; HPPA is pretty weird
560 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
562 # be slightly paranoid to make sure there's
563 # nothing surprising in there
564 if ( $c =~ /--- BEGIN ---/ ) {
565 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
567 if ($TargetPlatform =~ /^i386-/) {
568 $p =~ s/^\tpushl \%edi\n//;
569 $p =~ s/^\tpushl \%esi\n//;
570 $p =~ s/^\tsubl \$\d+,\%esp\n//;
571 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
572 } elsif ($TargetPlatform =~ /^m68k-/) {
573 $p =~ s/^\tlink a6,#-?\d.*\n//;
574 $p =~ s/^\tmovel d2,sp\@-\n//;
575 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
576 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
577 } elsif ($TargetPlatform =~ /^mips-/) {
578 # the .frame/.mask/.fmask that we use is the same
579 # as that produced by GCC for miniInterpret; this
580 # gives GDB some chance of figuring out what happened
581 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
582 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
583 $p =~ s/^\t\.(mask|fmask).*\n//g;
584 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
585 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
586 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
587 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
588 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
589 $p =~ s/__FRAME__/$FRAME/;
591 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
594 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
595 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
597 # glue together what's left
599 $c =~ s/\n\t\n/\n/; # junk blank line
603 if ( $TargetPlatform =~ /^mips-/ ) {
604 # MIPS: first, this basic sequence may occur "--- END ---" or not
605 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
608 # toss all epilogue stuff; again, paranoidly
609 if ( $c =~ /--- END ---/ ) {
610 if (($r, $e) = split(/--- END ---/, $c)) {
611 if ($TargetPlatform =~ /^i386-/) {
613 $e =~ s/^\tpopl \%edi\n//;
614 $e =~ s/^\tpopl \%esi\n//;
615 $e =~ s/^\taddl \$\d+,\%esp\n//;
616 } elsif ($TargetPlatform =~ /^m68k-/) {
617 $e =~ s/^\tunlk a6\n//;
619 } elsif ($TargetPlatform =~ /^mips-/) {
620 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
621 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
622 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
623 $e =~ s/^\tj\t\$31\n//;
625 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
627 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
628 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
630 # glue together what's left
632 $c =~ s/\n\t\n/\n/; # junk blank line
636 # On SPARCs, we don't do --- BEGIN/END ---, we just
637 # toss the register-windowing save/restore/ret* instructions
639 if ( $TargetPlatform =~ /^sparc-/ ) {
640 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
641 # throw away PROLOGUE comments
642 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
645 # On Alphas, the prologue mangling is done a little later (below)
647 # toss all calls to __DISCARD__
648 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
650 # MIPS: that may leave some gratuitous asm macros around
651 # (no harm done; but we get rid of them to be tidier)
652 $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/
653 if $TargetPlatform =~ /^mips-/;
655 # toss stack adjustment after DoSparks
656 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
657 if $TargetPlatform =~ /^m68k-/; # this looks old...
659 if ( $TargetPlatform =~ /^alpha-/ &&
660 ! $magic_rdata_seen &&
661 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
662 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
663 $magic_rdata_seen = 1;
666 # pick some end-things and move them to the next chunk
668 # pin a funny end-thing on (for easier matching):
669 $c .= 'FUNNY#END#THING';
671 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
673 if ( $i < ($numchks - 1)
674 && ( $to_move =~ /${T_COPY_DIRVS}/
675 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
676 $chk[$i + 1] = $to_move . $chk[$i + 1];
677 # otherwise they're tossed
680 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
683 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
685 # toss all prologue stuff, except for loading gp, and the ..ng address
686 if (($p, $r) = split(/^\t\.prologue/, $c)) {
687 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
688 $c = $keep . "..ng:\n";
690 print STDERR "malformed code block ($ent)?\n"
693 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
696 $c =~ s/FUNNY#END#THING//;
698 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
700 $chk[$i] = $c; # update w/ convenience copy
703 if ( $TargetPlatform =~ /^alpha-/ ) {
704 # print out the header stuff first
705 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
706 print OUTASM $chk[0];
708 } elsif ( $TargetPlatform =~ /^hppa/ ) {
709 print OUTASM $chk[0];
711 } elsif ( $TargetPlatform =~ /^mips-/ ) {
712 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
714 # get rid of horrible "<dollar>Revision: .*$" strings
715 local(@lines0) = split(/\n/, $chk[0]);
717 while ( $z <= $#lines0 ) {
718 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
721 while ( $z <= $#lines0 ) {
723 last if $lines0[$z] =~ /[,\t]0x0$/;
729 $chk[0] = join("\n", @lines0);
730 $chk[0] =~ s/\n\n+/\n/;
731 print OUTASM $chk[0];
734 # print out all the literal strings next
735 for ($i = 0; $i < $numchks; $i++) {
736 if ( $chkcat[$i] eq 'literal' ) {
737 print OUTASM $T_HDR_literal, $chk[$i];
738 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
740 $chkcat[$i] = 'DONE ALREADY';
744 # on the HPPA, print out all the bss next
745 if ( $TargetPlatform =~ /^hppa/ ) {
746 for ($i = 1; $i < $numchks; $i++) {
747 if ( $chkcat[$i] eq 'bss' ) {
748 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
749 print OUTASM $chk[$i];
751 $chkcat[$i] = 'DONE ALREADY';
756 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
757 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
759 next if $chkcat[$i] eq 'DONE ALREADY';
761 if ( $chkcat[$i] eq 'misc' ) {
762 if ($chk[$i] ne '') {
763 print OUTASM $T_HDR_misc;
764 &print_doctored($chk[$i], 0);
767 } elsif ( $chkcat[$i] eq 'toss' ) {
768 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
770 } elsif ( $chkcat[$i] eq 'data' ) {
771 if ($chk[$i] ne '') {
772 print OUTASM $T_HDR_data;
773 print OUTASM $chk[$i];
776 } elsif ( $chkcat[$i] eq 'consist' ) {
777 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
778 local($consist) = "$1.$2.$3";
780 $consist =~ s/\//./g;
782 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
783 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
785 } elsif ( $TargetPlatform !~ /^(mips|powerpc)-/ ) { # we just don't try in those case (ToDo)
786 # on mips: consistency string is just a v
787 # horrible bunch of .bytes,
788 # which I am too lazy to sort out (WDP 95/05)
790 print STDERR "Couldn't grok consistency: ", $chk[$i];
793 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
794 # we can just re-constitute this one...
795 # NB: we emit _three_ underscores no matter what,
796 # so ghc-split doesn't have to care.
797 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
799 } elsif ( $chkcat[$i] eq 'closure'
800 || $chkcat[$i] eq 'infotbl'
801 || $chkcat[$i] eq 'slow'
802 || $chkcat[$i] eq 'fast' ) { # do them in that order
803 $symb = $chksymb[$i];
806 if ( defined($closurechk{$symb}) ) {
807 print OUTASM $T_HDR_closure;
808 print OUTASM $chk[$closurechk{$symb}];
809 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
813 if ( defined($infochk{$symb}) ) {
815 print OUTASM $T_HDR_info;
816 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
817 # entry code will be put here!
820 if ( $chk[$infochk{$symb}] =~ /${T_DOT_WORD}\s+([A-Za-z0-9_]+_entry)$/o
821 && $1 ne "${T_US}${symb}_entry" ) {
822 print STDERR "!!! entry point???\n",$chk[$infochk{$symb}];
825 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
829 if ( defined($slowchk{$symb}) ) {
831 # teach it to drop through to the fast entry point:
832 $c = $chk[$slowchk{$symb}];
834 if ( defined($fastchk{$symb}) ) {
835 if ( $TargetPlatform =~ /^alpha-/ ) {
836 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
837 } elsif ( $TargetPlatform =~ /^hppa/ ) {
838 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
839 } elsif ( $TargetPlatform =~ /^i386-/ ) {
840 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edx\n\tjmp \*\%edx\n//;
841 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%eax\n\tjmp \*\%eax\n//;
842 } elsif ( $TargetPlatform =~ /^mips-/ ) {
843 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
844 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
845 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
846 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
847 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
848 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
849 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
851 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
855 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
856 # On alphas, hppa: no very good way to look for "dangling"
857 # references to fast-entry point.
858 # (questionable re hppa and mips...)
859 print STDERR "still has jump to fast entry point:\n$c"
860 if $c =~ /${T_US}${symb}_fast/; # NB: paranoia
863 print OUTASM $T_HDR_entry;
865 &print_doctored($c, 1); # NB: the 1!!!
867 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
871 if ( defined($fastchk{$symb}) ) {
872 if ( ! defined($slowchk{$symb})
873 # ToDo: the || clause can go once we're no longer
874 # concerned about producing exactly the same output as before
875 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
877 print OUTASM $T_HDR_fast;
879 &print_doctored($chk[$fastchk{$symb}], 0);
880 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
883 } elsif ( $chkcat[$i] eq 'vector'
884 || $chkcat[$i] eq 'direct' ) { # do them in that order
885 $symb = $chksymb[$i];
888 if ( defined($vectorchk{$symb}) ) {
889 print OUTASM $T_HDR_vector;
890 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
891 # direct return code will be put here!
892 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
896 if ( defined($directchk{$symb}) ) {
897 print OUTASM $T_HDR_direct;
898 &print_doctored($chk[$directchk{$symb}], 0);
899 $chkcat[$directchk{$symb}] = 'DONE ALREADY';
901 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
902 # Alphas: the commented nop is for the splitter, to ensure
903 # that no module ends with a label as the very last
904 # thing. (The linker will adjust the label to point
905 # to the first code word of the next module linked in,
906 # even if alignment constraints cause the label to move!)
908 print OUTASM "\t# nop\n";
912 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
916 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
918 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
919 if $TargetPlatform =~ /^powerpc-/;
922 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
923 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
928 sub mash_hppa_prologue { # OK, epilogue, too
931 # toss all prologue stuff
932 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
934 # Lie about our .CALLINFO
935 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
942 # toss all epilogue stuff
943 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
945 # Sorry; we moved the _info stuff to the code segment.
946 s/_info,DATA/_info,CODE/g;
954 local($_, $need_fallthru_patch) = @_;
956 if ( $TargetPlatform !~ /^i386-/
957 || ! /^\t[a-z]/ ) { # no instructions in here, apparently
961 # OK, must do some x86 **HACKING**
963 local($entry_patch) = '';
964 local($exit_patch) = '';
965 local($call_entry_patch)= '';
966 local($call_exit_patch) = '';
968 #OLD: # first, convert calls to *very magic form*: (ToDo: document
972 # call _?PerformGC_wrapper
976 # call _?PerformGC_wrapper
978 # The reason we do this now is to remove the apparent use of
979 # %esp, which would throw off the "what patch code do we need"
982 # Special macros in ghc/includes/COptWraps.lh, used in
983 # ghc/runtime/CallWrap_C.lc, are required for this to work!
986 s/^\tpushl \$(\d+)\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \$$1,\%eax\n\tcall ${T_DO_GC}\n/go;
987 s/^\tpushl \%eax\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tcall ${T_DO_GC}\n/go;
988 s/^\tpushl \%edx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%edx,\%eax\n\tcall ${T_DO_GC}\n/go;
990 #= if ( $StolenX86Regs <= 4 ) { # %ecx is ordinary reg
991 #= s/^\tpushl \%ecx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%ecx,\%eax\n\tcall ${T_DO_GC}\n/go;
994 # gotta watch out for weird instructions that
995 # invisibly smash various regs:
996 # rep* %ecx used for counting
997 # scas* %edi used for destination index
998 # cmps* %e[sd]i used for indices
999 # loop* %ecx used for counting
1004 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1006 # * GCC used an "STG reg" for its own purposes
1008 # * some secret uses of machine reg, requiring STG reg
1009 # to be saved/restored
1011 # The most dangerous "GCC uses" of an "STG reg" are when
1012 # the reg holds the target of a jmp -- it's tricky to
1013 # insert the patch-up code before we get to the target!
1014 # So here we change the jmps:
1016 # --------------------------------------------------------
1017 # it can happen that we have jumps of the form...
1018 # jmp *<something involving %esp>
1020 # jmp <something involving another naughty register...>
1022 # a reasonably-common case is:
1024 # movl $_blah,<bad-reg>
1027 # which is easily fixed as:
1029 # sigh! try to hack around it...
1032 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1033 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1034 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1035 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1036 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1037 if /(jmp|call) .*\%esi/;
1039 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1040 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1041 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1042 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1043 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1044 if /(jmp|call) .*\%edi/;
1046 #= if ($StolenX86Regs <= 4 ) { # spurious uses of ecx?
1047 #= s/^\tmovl (.*),\%ecx\n\tjmp \*%ecx\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1048 #= s/^\tjmp \*(-?\d*)\((.*\%ecx.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1049 #= s/^\tjmp \*\%ecx\n/\tmovl \%ecx,\%eax\n\tjmp \*\%eax\n/g;
1050 #= die "$Pgm: (mangler) still have jump involving \%ecx!\n$_"
1051 #= if /(jmp|call) .*\%ecx/;
1054 # OK, now we can decide what our patch-up code is going to
1056 if ( $StolenX86Regs <= 2
1057 && ( /32\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1058 $entry_patch .= "\tmovl \%esi,32(\%ebx)\n";
1059 $exit_patch .= "\tmovl 32(\%ebx),\%esi\n";
1060 # nothing for call_{entry,exit} because %esi is callee-save
1062 if ( $StolenX86Regs <= 3
1063 && ( /64\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # SpA (edi)
1064 $entry_patch .= "\tmovl \%edi,64(\%ebx)\n";
1065 $exit_patch .= "\tmovl 64(\%ebx),\%edi\n";
1066 # nothing for call_{entry,exit} because %edi is callee-save
1068 #= if ( $StolenX86Regs <= 4
1069 #= && ( /80\(\%ebx\)/ || /\%ecx/ || /^\t(rep|loop)/ ) ) { # Hp (ecx)
1070 #= $entry_patch .= "\tmovl \%ecx,80(\%ebx)\n";
1071 #= $exit_patch .= "\tmovl 80(\%ebx),\%ecx\n";
1073 #= $call_exit_patch .= "\tmovl \%ecx,108(\%ebx)\n";
1074 #= $call_entry_patch .= "\tmovl 108(\%ebx),\%ecx\n";
1075 #= # I have a really bad feeling about this if we ever
1076 #= # have a nested call...
1077 #= # NB: should just hide it somewhere in the C stack.
1079 # --------------------------------------------------------
1080 # next, here we go with non-%esp patching!
1082 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1083 s/^(\tcall .*\n(\taddl \$\d+,\%esp\n)?)/$call_exit_patch$1$call_entry_patch/g; # _all_ calls
1085 # fix _all_ non-local jumps:
1087 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1088 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1090 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1092 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1093 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1095 # fix post-PerformGC wrapper (re-)entries ???
1097 if ($StolenX86Regs == 2 ) {
1098 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1099 if /^\t(jmp|call) .*\%e(si|di)/;
1100 #= die "ARGH! Jump uses \%esi, \%edi, or \%ecx with -monly-2-regs:\n$_"
1101 #= if /^\t(jmp|call) .*\%e(si|di|cx)/;
1102 } elsif ($StolenX86Regs == 3 ) {
1103 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1104 if /^\t(jmp|call) .*\%edi/;
1105 #= die "ARGH! Jump uses \%edi or \%ecx with -monly-3-regs:\n$_"
1106 #= if /^\t(jmp|call) .*\%e(di|cx)/;
1107 #= } elsif ($StolenX86Regs == 4 ) {
1108 #= die "ARGH! Jump uses \%ecx with -monly-4-regs:\n$_"
1109 #= if /^\t(jmp|call) .*\%ecx/;
1112 # final peephole fixes
1114 s/^\tmovl \%eax,36\(\%ebx\)\n\tjmp \*36\(\%ebx\)\n/\tmovl \%eax,36\(\%ebx\)\n\tjmp \*\%eax\n/;
1115 # the short form may tickle perl bug:
1116 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1117 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1118 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1119 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1120 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1122 # Hacks to eliminate some reloads of Hp. Worth about 5% code size.
1123 # We could do much better than this, but at least it catches about
1124 # half of the unnecessary reloads.
1125 # Note that these will stop working if either:
1126 # (i) the offset of Hp from BaseReg changes from 80, or
1127 # (ii) the register assignment of BaseReg changes from %ebx
1129 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;
1131 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;
1133 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;
1134 s/^\tmovl 80\(\%ebx\),\%eax((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[bcd]x)))+)\n\tmovl 80\(\%ebx\),\%eax/\tmovl 80\(\%ebx\),\%eax$1/g;
1136 # --------------------------------------------------------
1137 # that's it -- print it
1139 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1143 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1144 print OUTASM $exit_patch;
1145 # ToDo: make it not print if there is a "jmp" at the end
1151 sub init_FUNNY_THINGS {
1152 %KNOWN_FUNNY_THING = (
1153 "${T_US}CheckHeapCode${T_POST_LBL}", 1,
1154 "${T_US}CommonUnderflow${T_POST_LBL}", 1,
1155 "${T_US}Continue${T_POST_LBL}", 1,
1156 "${T_US}EnterNodeCode${T_POST_LBL}", 1,
1157 "${T_US}ErrorIO_call_count${T_POST_LBL}", 1,
1158 "${T_US}ErrorIO_innards${T_POST_LBL}", 1,
1159 "${T_US}IndUpdRetDir${T_POST_LBL}", 1,
1160 "${T_US}IndUpdRetV0${T_POST_LBL}", 1,
1161 "${T_US}IndUpdRetV1${T_POST_LBL}", 1,
1162 "${T_US}IndUpdRetV2${T_POST_LBL}", 1,
1163 "${T_US}IndUpdRetV3${T_POST_LBL}", 1,
1164 "${T_US}IndUpdRetV4${T_POST_LBL}", 1,
1165 "${T_US}IndUpdRetV5${T_POST_LBL}", 1,
1166 "${T_US}IndUpdRetV6${T_POST_LBL}", 1,
1167 "${T_US}IndUpdRetV7${T_POST_LBL}", 1,
1168 "${T_US}PrimUnderflow${T_POST_LBL}", 1,
1169 "${T_US}StackUnderflowEnterNode${T_POST_LBL}", 1,
1170 "${T_US}StdErrorCode${T_POST_LBL}", 1,
1171 "${T_US}UnderflowVect0${T_POST_LBL}", 1,
1172 "${T_US}UnderflowVect1${T_POST_LBL}", 1,
1173 "${T_US}UnderflowVect2${T_POST_LBL}", 1,
1174 "${T_US}UnderflowVect3${T_POST_LBL}", 1,
1175 "${T_US}UnderflowVect4${T_POST_LBL}", 1,
1176 "${T_US}UnderflowVect5${T_POST_LBL}", 1,
1177 "${T_US}UnderflowVect6${T_POST_LBL}", 1,
1178 "${T_US}UnderflowVect7${T_POST_LBL}", 1,
1179 "${T_US}UpdErr${T_POST_LBL}", 1,
1180 "${T_US}UpdatePAP${T_POST_LBL}", 1,
1181 "${T_US}WorldStateToken${T_POST_LBL}", 1,
1182 "${T_US}_Enter_Internal${T_POST_LBL}", 1,
1183 "${T_US}_PRMarking_MarkNextAStack${T_POST_LBL}", 1,
1184 "${T_US}_PRMarking_MarkNextBStack${T_POST_LBL}", 1,
1185 "${T_US}_PRMarking_MarkNextCAF${T_POST_LBL}", 1,
1186 "${T_US}_PRMarking_MarkNextGA${T_POST_LBL}", 1,
1187 "${T_US}_PRMarking_MarkNextRoot${T_POST_LBL}", 1,
1188 "${T_US}_PRMarking_MarkNextSpark${T_POST_LBL}", 1,
1189 "${T_US}_PRMarking_MarkNextEvent${T_POST_LBL}", 1,
1190 "${T_US}_PRMarking_MarkNextClosureInFetchBuffer${T_POST_LBL}", 1,
1191 "${T_US}_Scavenge_Forward_Ref${T_POST_LBL}", 1,
1192 "${T_US}__std_entry_error__${T_POST_LBL}", 1,
1193 "${T_US}_startMarkWorld${T_POST_LBL}", 1,
1194 "${T_US}resumeThread${T_POST_LBL}", 1,
1195 "${T_US}startCcRegisteringWorld${T_POST_LBL}", 1,
1196 "${T_US}startEnterFloat${T_POST_LBL}", 1,
1197 "${T_US}startEnterInt${T_POST_LBL}", 1,
1198 "${T_US}startPerformIO${T_POST_LBL}", 1,
1199 "${T_US}startStgWorld${T_POST_LBL}", 1,
1200 "${T_US}stopPerformIO${T_POST_LBL}", 1
1205 The following table reversal is used for both info tables and return
1206 vectors. In both cases, we remove the first entry from the table,
1207 reverse the table, put the label at the end, and paste some code
1208 (that which is normally referred to by the first entry in the table)
1209 right after the table itself. (The code pasting is done elsewhere.)
1213 local($symb, $tbl, $discard1) = @_;
1215 local($before) = '';
1217 local(@imports) = (); # hppa only
1220 local(@lines) = split(/\n/, $tbl);
1221 local($i, $extra, $words_to_pad, $j);
1223 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t${T_DOT_WORD}\s+/o; $i++) {
1224 $label .= $lines[$i] . "\n",
1225 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1226 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1227 || $lines[$i] =~ /^${T_US}vtbl_\S+${T_POST_LBL}$/o;
1229 $before .= $lines[$i] . "\n"; # otherwise...
1232 if ( $TargetPlatform !~ /^hppa/ ) {
1233 for ( ; $i <= $#lines && $lines[$i] =~ /^\t${T_DOT_WORD}\s+/o; $i++) {
1234 push(@words, $lines[$i]);
1236 } else { # hppa weirdness
1237 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1238 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1239 push(@imports, $lines[$i]);
1241 # We don't use HP's ``function pointers''
1242 # We just use labels in code space, like normal people
1243 $lines[$i] =~ s/P%//;
1244 push(@words, $lines[$i]);
1249 # now throw away the first word (entry code):
1250 shift(@words) if $discard1;
1252 # Padding removed to reduce code size and improve performance on Pentiums.
1254 # for 486-cache-friendliness, we want our tables aligned
1255 # on 16-byte boundaries (.align 4). Let's pad:
1256 # $extra = ($#words + 1) % 4;
1257 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1258 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1260 for (; $i <= $#lines; $i++) {
1261 $after .= $lines[$i] . "\n";
1264 # Alphas:If we have anonymous text (not part of a procedure), the
1265 # linker may complain about missing exception information. Bleh.
1266 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1267 $before = "\t.ent $1\n" . $before;
1268 $after .= "\t.end $1\n";
1272 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1273 . join("\n", (reverse @words)) . "\n"
1276 # print STDERR "before=$before\n";
1277 # print STDERR "label=$label\n";
1278 # print STDERR "words=",(reverse @words),"\n";
1279 # print STDERR "after=$after\n";
1286 sub mini_mangle_asm_i386 {
1287 local($in_asmf, $out_asmf) = @_;
1289 &init_TARGET_STUFF();
1291 open(INASM, "< $in_asmf")
1292 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1293 open(OUTASM,"> $out_asmf")
1294 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1300 /^${T_US}(PerformGC|StackOverflow|Yield|PerformReschedule)_wrapper${T_POST_LBL}\n/o;
1301 print OUTASM "\tmovl \%esp, ${T_US}__temp_esp\n";
1302 print OUTASM "\tmovl \%eax, ${T_US}__temp_eax\n";
1306 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1307 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1311 The HP is a major nuisance. The threaded code mangler moved info
1312 tables from data space to code space, but unthreaded code in the RTS
1313 still has references to info tables in data space. Since the HP
1314 linker is very precise about where symbols live, we need to patch the
1315 references in the unthreaded RTS as well.
1318 sub mini_mangle_asm_hppa {
1319 local($in_asmf, $out_asmf) = @_;
1321 open(INASM, "< $in_asmf")
1322 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1323 open(OUTASM,"> $out_asmf")
1324 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1327 s/_info,DATA/_info,CODE/; # Move _info references to code space
1333 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1334 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1337 # make "require"r happy...