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:
351 &init_TARGET_STUFF();
352 &init_FUNNY_THINGS();
354 open(INASM, "< $in_asmf")
355 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
356 open(OUTASM,"> $out_asmf")
357 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
359 # read whole file, divide into "chunks":
360 # record some info about what we've found...
362 @chk = (); # contents of the chunk
363 $numchks = 0; # number of them
364 @chkcat = (); # what category of thing in each chunk
365 @chksymb = (); # what symbol(base) is defined in this chunk
366 %slowchk = (); # ditto, its regular "slow" entry code
367 %fastchk = (); # ditto, fast entry code
368 %closurechk = (); # ditto, the (static) closure
369 %infochk = (); # given a symbol base, say what chunk its info tbl is in
370 %vectorchk = (); # ditto, return vector table
371 %directchk = (); # ditto, direct return code
372 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
374 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
377 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
378 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
379 next if /${T_PRE_APP}(NO_)?APP/o;
381 next if /^;/ && $TargetPlatform =~ /^hppa/;
383 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|powerpc)-/;
385 last if /^_section_\.text:$/ && $TargetPlatform =~ /^powerpc-/;
387 if ( $TargetPlatform =~ /^mips-/
388 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
389 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
391 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
392 # duplicated from the bottom
396 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
397 # Alphas: Local labels not to be confused with new chunks
400 # NB: all the rest start with a non-space
402 } elsif ( $TargetPlatform =~ /^mips-/
403 && /^\d+:/ ) { # a funny-looking very-local label
406 } elsif ( /$T_CONST_LBL/o ) {
408 $chkcat[$i] = 'literal';
411 } elsif ( /^${T_US}__stg_split_marker(\d+)${T_POST_LBL}$/o ) {
413 $chkcat[$i] = 'splitmarker';
416 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
419 $chkcat[$i] = 'infotbl';
420 $chksymb[$i] = $symb;
422 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
424 $infochk{$symb} = $i;
426 } elsif ( /^${T_US}([A-Za-z0-9_]+)_entry${T_POST_LBL}$/o ) {
428 $chkcat[$i] = 'slow';
433 } elsif ( /^${T_US}([A-Za-z0-9_]+)_fast\d+${T_POST_LBL}$/o ) {
435 $chkcat[$i] = 'fast';
440 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
442 $chkcat[$i] = 'closure';
445 $closurechk{$1} = $i;
447 } elsif ( /^${T_US}ghc.*c_ID${T_POST_LBL}/o ) {
449 $chkcat[$i] = 'consist';
451 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
454 } elsif ( /^${T_US}ErrorIO_call_count${T_POST_LBL}$/o # HACK!!!!
455 || /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
456 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
457 || /^${T_US}CC_.*_struct${T_POST_LBL}$/o # PROF: _CC_ccident_struct
458 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
459 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
462 $chkcat[$i] = 'data';
465 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
470 } elsif ( /^${T_US}(ret_|djn_)/o ) {
472 $chkcat[$i] = 'misc';
475 } elsif ( /^${T_US}vtbl_([A-Za-z0-9_]+)${T_POST_LBL}$/o ) {
477 $chkcat[$i] = 'vector';
482 } elsif ( /^${T_US}([A-Za-z0-9_]+)DirectReturn${T_POST_LBL}$/o ) {
484 $chkcat[$i] = 'direct';
489 } elsif ( /^${T_US}[A-Za-z0-9_]+_upd${T_POST_LBL}$/o ) {
491 $chkcat[$i] = 'misc';
494 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
495 && /^(_uname|uname|stat|fstat):/ ) {
496 # for some utterly bizarre reason, this platform
497 # likes to drop little local C routines with these names
498 # into each and every .o file that #includes the
499 # relevant system .h file. Yuck. We just don't
500 # tolerate them in .hc files (which we are processing
501 # here). If you need to call one of these things from
502 # Haskell, make a call to your own C wrapper, then
503 # put that C wrapper (which calls one of these) in a
504 # plain .c file. WDP 95/12
506 $chkcat[$i] = 'toss';
509 } elsif ( /^${T_US}[A-Za-z0-9_]/o
510 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
512 && ( $TargetPlatform !~ /^powerpc/ # ditto
513 || ! /^(L\.\.\d+|LT\.\..*):$/ ) ) {
516 print STDERR "Funny global thing?: $_"
517 unless $KNOWN_FUNNY_THING{$thing}
518 || /^${T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o # pointer reversal GC routines
519 || /^${T_US}CC_.*${T_POST_LBL}$/o # PROF: _CC_ccident
520 || /^${T_US}_reg.*${T_POST_LBL}$/o; # PROF: __reg<module>
522 $chkcat[$i] = 'misc';
525 } else { # simple line (duplicated at the top)
530 $numchks = $#chk + 1;
532 # the division into chunks is imperfect;
533 # we throw some things over the fence into the next
536 # also, there are things we would like to know
537 # about the whole module before we start spitting
540 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
542 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
544 # Alphas: NB: we start meddling at chunk 1, not chunk 0
545 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
546 # spits a ".quad 0" in after the v first ".rdata"; we
547 # detect this special case (tossing the ".quad 0")!
548 local($magic_rdata_seen) = 0;
550 # HPPAs, MIPSen: also start medding at chunk 1
552 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
553 $c = $chk[$i]; # convenience copy
555 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
557 # toss all prologue stuff; HPPA is pretty weird
559 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
561 # be slightly paranoid to make sure there's
562 # nothing surprising in there
563 if ( $c =~ /--- BEGIN ---/ ) {
564 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
566 if ($TargetPlatform =~ /^i386-/) {
567 $p =~ s/^\tpushl \%edi\n//;
568 $p =~ s/^\tpushl \%esi\n//;
569 $p =~ s/^\tsubl \$\d+,\%esp\n//;
570 $p =~ s/^\tmovl \$\d+,\%eax\n\tcall __alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
571 } elsif ($TargetPlatform =~ /^m68k-/) {
572 $p =~ s/^\tlink a6,#-?\d.*\n//;
573 $p =~ s/^\tmovel d2,sp\@-\n//;
574 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
575 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
576 } elsif ($TargetPlatform =~ /^mips-/) {
577 # the .frame/.mask/.fmask that we use is the same
578 # as that produced by GCC for miniInterpret; this
579 # gives GDB some chance of figuring out what happened
580 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
581 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
582 $p =~ s/^\t\.(mask|fmask).*\n//g;
583 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
584 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
585 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
586 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
587 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
588 $p =~ s/__FRAME__/$FRAME/;
590 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
593 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/
594 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
596 # glue together what's left
598 $c =~ s/\n\t\n/\n/; # junk blank line
602 if ( $TargetPlatform =~ /^mips-/ ) {
603 # MIPS: first, this basic sequence may occur "--- END ---" or not
604 $c =~ s/^\tlw\t\$31,\d+\(\$sp\)\n\taddu\t\$sp,\$sp,\d+\n\tj\t\$31\n\t\.end/\t\.end/;
607 # toss all epilogue stuff; again, paranoidly
608 if ( $c =~ /--- END ---/ ) {
609 if (($r, $e) = split(/--- END ---/, $c)) {
610 if ($TargetPlatform =~ /^i386-/) {
612 $e =~ s/^\tpopl \%edi\n//;
613 $e =~ s/^\tpopl \%esi\n//;
614 $e =~ s/^\taddl \$\d+,\%esp\n//;
615 } elsif ($TargetPlatform =~ /^m68k-/) {
616 $e =~ s/^\tunlk a6\n//;
618 } elsif ($TargetPlatform =~ /^mips-/) {
619 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
620 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
621 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
622 $e =~ s/^\tj\t\$31\n//;
624 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
626 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/
627 && $TargetPlatform !~ /^powerpc-/; #ToDo: remove test
629 # glue together what's left
631 $c =~ s/\n\t\n/\n/; # junk blank line
635 # On SPARCs, we don't do --- BEGIN/END ---, we just
636 # toss the register-windowing save/restore/ret* instructions
638 if ( $TargetPlatform =~ /^sparc-/ ) {
639 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
640 # throw away PROLOGUE comments
641 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
644 # On Alphas, the prologue mangling is done a little later (below)
646 # toss all calls to __DISCARD__
647 $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
649 # MIPS: that may leave some gratuitous asm macros around
650 # (no harm done; but we get rid of them to be tidier)
651 $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/
652 if $TargetPlatform =~ /^mips-/;
654 # toss stack adjustment after DoSparks
655 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
656 if $TargetPlatform =~ /^m68k-/; # this looks old...
658 if ( $TargetPlatform =~ /^alpha-/ &&
659 ! $magic_rdata_seen &&
660 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
661 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
662 $magic_rdata_seen = 1;
665 # pick some end-things and move them to the next chunk
667 # pin a funny end-thing on (for easier matching):
668 $c .= 'FUNNY#END#THING';
670 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
672 if ( $i < ($numchks - 1)
673 && ( $to_move =~ /${T_COPY_DIRVS}/
674 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
675 $chk[$i + 1] = $to_move . $chk[$i + 1];
676 # otherwise they're tossed
679 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
682 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
684 # toss all prologue stuff, except for loading gp, and the ..ng address
685 if (($p, $r) = split(/^\t\.prologue/, $c)) {
686 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
687 $c = $keep . "..ng:\n";
689 print STDERR "malformed code block ($ent)?\n"
692 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
695 $c =~ s/FUNNY#END#THING//;
697 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
699 $chk[$i] = $c; # update w/ convenience copy
702 if ( $TargetPlatform =~ /^alpha-/ ) {
703 # print out the header stuff first
704 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
705 print OUTASM $chk[0];
707 } elsif ( $TargetPlatform =~ /^hppa/ ) {
708 print OUTASM $chk[0];
710 } elsif ( $TargetPlatform =~ /^mips-/ ) {
711 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
713 # get rid of horrible "<dollar>Revision: .*$" strings
714 local(@lines0) = split(/\n/, $chk[0]);
716 while ( $z <= $#lines0 ) {
717 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
720 while ( $z <= $#lines0 ) {
722 last if $lines0[$z] =~ /[,\t]0x0$/;
728 $chk[0] = join("\n", @lines0);
729 $chk[0] =~ s/\n\n+/\n/;
730 print OUTASM $chk[0];
733 # print out all the literal strings next
734 for ($i = 0; $i < $numchks; $i++) {
735 if ( $chkcat[$i] eq 'literal' ) {
736 print OUTASM $T_HDR_literal, $chk[$i];
737 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
739 $chkcat[$i] = 'DONE ALREADY';
743 # on the HPPA, print out all the bss next
744 if ( $TargetPlatform =~ /^hppa/ ) {
745 for ($i = 1; $i < $numchks; $i++) {
746 if ( $chkcat[$i] eq 'bss' ) {
747 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
748 print OUTASM $chk[$i];
750 $chkcat[$i] = 'DONE ALREADY';
755 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
756 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
758 next if $chkcat[$i] eq 'DONE ALREADY';
760 if ( $chkcat[$i] eq 'misc' ) {
761 if ($chk[$i] ne '') {
762 print OUTASM $T_HDR_misc;
763 &print_doctored($chk[$i], 0);
766 } elsif ( $chkcat[$i] eq 'toss' ) {
767 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
769 } elsif ( $chkcat[$i] eq 'data' ) {
770 if ($chk[$i] ne '') {
771 print OUTASM $T_HDR_data;
772 print OUTASM $chk[$i];
775 } elsif ( $chkcat[$i] eq 'consist' ) {
776 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
777 local($consist) = "$1.$2.$3";
779 $consist =~ s/\//./g;
781 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
782 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n";
784 } elsif ( $TargetPlatform !~ /^(mips|powerpc)-/ ) { # we just don't try in those case (ToDo)
785 # on mips: consistency string is just a v
786 # horrible bunch of .bytes,
787 # which I am too lazy to sort out (WDP 95/05)
789 print STDERR "Couldn't grok consistency: ", $chk[$i];
792 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
793 # we can just re-constitute this one...
794 # NB: we emit _three_ underscores no matter what,
795 # so ghc-split doesn't have to care.
796 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
798 } elsif ( $chkcat[$i] eq 'closure'
799 || $chkcat[$i] eq 'infotbl'
800 || $chkcat[$i] eq 'slow'
801 || $chkcat[$i] eq 'fast' ) { # do them in that order
802 $symb = $chksymb[$i];
805 if ( defined($closurechk{$symb}) ) {
806 print OUTASM $T_HDR_closure;
807 print OUTASM $chk[$closurechk{$symb}];
808 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
812 if ( defined($infochk{$symb}) ) {
814 print OUTASM $T_HDR_info;
815 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
816 # entry code will be put here!
819 if ( $chk[$infochk{$symb}] =~ /${T_DOT_WORD}\s+([A-Za-z0-9_]+_entry)$/o
820 && $1 ne "${T_US}${symb}_entry" ) {
821 print STDERR "!!! entry point???\n",$chk[$infochk{$symb}];
824 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
828 if ( defined($slowchk{$symb}) ) {
830 # teach it to drop through to the fast entry point:
831 $c = $chk[$slowchk{$symb}];
833 if ( defined($fastchk{$symb}) ) {
834 if ( $TargetPlatform =~ /^alpha-/ ) {
835 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
836 } elsif ( $TargetPlatform =~ /^hppa/ ) {
837 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
838 } elsif ( $TargetPlatform =~ /^i386-/ ) {
839 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edx\n\tjmp \*\%edx\n//;
840 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%eax\n\tjmp \*\%eax\n//;
841 } elsif ( $TargetPlatform =~ /^mips-/ ) {
842 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
843 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
844 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
845 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
846 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
847 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
848 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
850 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
854 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
855 # On alphas, hppa: no very good way to look for "dangling"
856 # references to fast-entry point.
857 # (questionable re hppa and mips...)
858 print STDERR "still has jump to fast entry point:\n$c"
859 if $c =~ /${T_US}${symb}_fast/; # NB: paranoia
862 print OUTASM $T_HDR_entry;
864 &print_doctored($c, 1); # NB: the 1!!!
866 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
870 if ( defined($fastchk{$symb}) ) {
871 if ( ! defined($slowchk{$symb})
872 # ToDo: the || clause can go once we're no longer
873 # concerned about producing exactly the same output as before
874 #OLD: || $TargetPlatform =~ /^(m68k|sparc|i386)-/
876 print OUTASM $T_HDR_fast;
878 &print_doctored($chk[$fastchk{$symb}], 0);
879 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
882 } elsif ( $chkcat[$i] eq 'vector'
883 || $chkcat[$i] eq 'direct' ) { # do them in that order
884 $symb = $chksymb[$i];
887 if ( defined($vectorchk{$symb}) ) {
888 print OUTASM $T_HDR_vector;
889 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
890 # direct return code will be put here!
891 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
895 if ( defined($directchk{$symb}) ) {
896 print OUTASM $T_HDR_direct;
897 &print_doctored($chk[$directchk{$symb}], 0);
898 $chkcat[$directchk{$symb}] = 'DONE ALREADY';
900 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
901 # Alphas: the commented nop is for the splitter, to ensure
902 # that no module ends with a label as the very last
903 # thing. (The linker will adjust the label to point
904 # to the first code word of the next module linked in,
905 # even if alignment constraints cause the label to move!)
907 print OUTASM "\t# nop\n";
911 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
915 print OUTASM $EXTERN_DECLS if $TargetPlatform =~ /^mips-/;
917 print OUTASM ".csect .text[PR]\n_section_.text:\n.csect .data[RW]\n\t.long _section_.text\n"
918 if $TargetPlatform =~ /^powerpc-/;
921 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
922 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
927 sub mash_hppa_prologue { # OK, epilogue, too
930 # toss all prologue stuff
931 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
933 # Lie about our .CALLINFO
934 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
941 # toss all epilogue stuff
942 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
944 # Sorry; we moved the _info stuff to the code segment.
945 s/_info,DATA/_info,CODE/g;
953 local($_, $need_fallthru_patch) = @_;
955 if ( $TargetPlatform !~ /^i386-/
956 || ! /^\t[a-z]/ ) { # no instructions in here, apparently
960 # OK, must do some x86 **HACKING**
962 local($entry_patch) = '';
963 local($exit_patch) = '';
964 local($call_entry_patch)= '';
965 local($call_exit_patch) = '';
967 #OLD: # first, convert calls to *very magic form*: (ToDo: document
971 # call _?PerformGC_wrapper
975 # call _?PerformGC_wrapper
977 # The reason we do this now is to remove the apparent use of
978 # %esp, which would throw off the "what patch code do we need"
981 # Special macros in ghc/includes/COptWraps.lh, used in
982 # ghc/runtime/CallWrap_C.lc, are required for this to work!
985 s/^\tpushl \$(\d+)\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \$$1,\%eax\n\tcall ${T_DO_GC}\n/go;
986 s/^\tpushl \%eax\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tcall ${T_DO_GC}\n/go;
987 s/^\tpushl \%edx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%edx,\%eax\n\tcall ${T_DO_GC}\n/go;
989 #= if ( $StolenX86Regs <= 4 ) { # %ecx is ordinary reg
990 #= s/^\tpushl \%ecx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%ecx,\%eax\n\tcall ${T_DO_GC}\n/go;
993 # gotta watch out for weird instructions that
994 # invisibly smash various regs:
995 # rep* %ecx used for counting
996 # scas* %edi used for destination index
997 # cmps* %e[sd]i used for indices
998 # loop* %ecx used for counting
1003 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
1005 # * GCC used an "STG reg" for its own purposes
1007 # * some secret uses of machine reg, requiring STG reg
1008 # to be saved/restored
1010 # The most dangerous "GCC uses" of an "STG reg" are when
1011 # the reg holds the target of a jmp -- it's tricky to
1012 # insert the patch-up code before we get to the target!
1013 # So here we change the jmps:
1015 # --------------------------------------------------------
1016 # it can happen that we have jumps of the form...
1017 # jmp *<something involving %esp>
1019 # jmp <something involving another naughty register...>
1021 # a reasonably-common case is:
1023 # movl $_blah,<bad-reg>
1026 # which is easily fixed as:
1028 # sigh! try to hack around it...
1031 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1032 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1033 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1034 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1035 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1036 if /(jmp|call) .*\%esi/;
1038 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1039 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1040 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1041 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1042 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1043 if /(jmp|call) .*\%edi/;
1045 #= if ($StolenX86Regs <= 4 ) { # spurious uses of ecx?
1046 #= s/^\tmovl (.*),\%ecx\n\tjmp \*%ecx\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1047 #= s/^\tjmp \*(-?\d*)\((.*\%ecx.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1048 #= s/^\tjmp \*\%ecx\n/\tmovl \%ecx,\%eax\n\tjmp \*\%eax\n/g;
1049 #= die "$Pgm: (mangler) still have jump involving \%ecx!\n$_"
1050 #= if /(jmp|call) .*\%ecx/;
1053 # OK, now we can decide what our patch-up code is going to
1055 if ( $StolenX86Regs <= 2
1056 && ( /32\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1057 $entry_patch .= "\tmovl \%esi,32(\%ebx)\n";
1058 $exit_patch .= "\tmovl 32(\%ebx),\%esi\n";
1059 # nothing for call_{entry,exit} because %esi is callee-save
1061 if ( $StolenX86Regs <= 3
1062 && ( /64\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # SpA (edi)
1063 $entry_patch .= "\tmovl \%edi,64(\%ebx)\n";
1064 $exit_patch .= "\tmovl 64(\%ebx),\%edi\n";
1065 # nothing for call_{entry,exit} because %edi is callee-save
1067 #= if ( $StolenX86Regs <= 4
1068 #= && ( /80\(\%ebx\)/ || /\%ecx/ || /^\t(rep|loop)/ ) ) { # Hp (ecx)
1069 #= $entry_patch .= "\tmovl \%ecx,80(\%ebx)\n";
1070 #= $exit_patch .= "\tmovl 80(\%ebx),\%ecx\n";
1072 #= $call_exit_patch .= "\tmovl \%ecx,108(\%ebx)\n";
1073 #= $call_entry_patch .= "\tmovl 108(\%ebx),\%ecx\n";
1074 #= # I have a really bad feeling about this if we ever
1075 #= # have a nested call...
1076 #= # NB: should just hide it somewhere in the C stack.
1078 # --------------------------------------------------------
1079 # next, here we go with non-%esp patching!
1081 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1082 s/^(\tcall .*\n(\taddl \$\d+,\%esp\n)?)/$call_exit_patch$1$call_entry_patch/g; # _all_ calls
1084 # fix _all_ non-local jumps:
1086 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1087 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1089 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1091 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1092 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1094 # fix post-PerformGC wrapper (re-)entries ???
1096 if ($StolenX86Regs == 2 ) {
1097 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1098 if /^\t(jmp|call) .*\%e(si|di)/;
1099 #= die "ARGH! Jump uses \%esi, \%edi, or \%ecx with -monly-2-regs:\n$_"
1100 #= if /^\t(jmp|call) .*\%e(si|di|cx)/;
1101 } elsif ($StolenX86Regs == 3 ) {
1102 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1103 if /^\t(jmp|call) .*\%edi/;
1104 #= die "ARGH! Jump uses \%edi or \%ecx with -monly-3-regs:\n$_"
1105 #= if /^\t(jmp|call) .*\%e(di|cx)/;
1106 #= } elsif ($StolenX86Regs == 4 ) {
1107 #= die "ARGH! Jump uses \%ecx with -monly-4-regs:\n$_"
1108 #= if /^\t(jmp|call) .*\%ecx/;
1111 # final peephole fixes
1113 s/^\tmovl \%eax,36\(\%ebx\)\n\tjmp \*36\(\%ebx\)\n/\tmovl \%eax,36\(\%ebx\)\n\tjmp \*\%eax\n/;
1114 # the short form may tickle perl bug:
1115 # s/^\tmovl \$${T_US}(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp $T_US$1/g;
1116 s/^\tmovl \$${T_US}(.*),\%eax\n\tjmp \*\%eax/\tjmp $T_US$1/g;
1117 s/^\tmovl \$${T_US}(.*),\%ebx\n\tjmp \*\%ebx/\tjmp $T_US$1/g;
1118 s/^\tmovl \$${T_US}(.*),\%ecx\n\tjmp \*\%ecx/\tjmp $T_US$1/g;
1119 s/^\tmovl \$${T_US}(.*),\%edx\n\tjmp \*\%edx/\tjmp $T_US$1/g;
1121 # Hacks to eliminate some reloads of Hp. Worth about 5% code size.
1122 # We could do much better than this, but at least it catches about
1123 # half of the unnecessary reloads.
1124 # Note that these will stop working if either:
1125 # (i) the offset of Hp from BaseReg changes from 80, or
1126 # (ii) the register assignment of BaseReg changes from %ebx
1128 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;
1130 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;
1132 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;
1133 s/^\tmovl 80\(\%ebx\),\%eax((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[bcd]x)))+)\n\tmovl 80\(\%ebx\),\%eax/\tmovl 80\(\%ebx\),\%eax$1/g;
1135 # --------------------------------------------------------
1136 # that's it -- print it
1138 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1142 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1143 print OUTASM $exit_patch;
1144 # ToDo: make it not print if there is a "jmp" at the end
1150 sub init_FUNNY_THINGS {
1151 %KNOWN_FUNNY_THING = (
1152 "${T_US}CheckHeapCode${T_POST_LBL}", 1,
1153 "${T_US}CommonUnderflow${T_POST_LBL}", 1,
1154 "${T_US}Continue${T_POST_LBL}", 1,
1155 "${T_US}EnterNodeCode${T_POST_LBL}", 1,
1156 "${T_US}ErrorIO_call_count${T_POST_LBL}", 1,
1157 "${T_US}ErrorIO_innards${T_POST_LBL}", 1,
1158 "${T_US}IndUpdRetDir${T_POST_LBL}", 1,
1159 "${T_US}IndUpdRetV0${T_POST_LBL}", 1,
1160 "${T_US}IndUpdRetV1${T_POST_LBL}", 1,
1161 "${T_US}IndUpdRetV2${T_POST_LBL}", 1,
1162 "${T_US}IndUpdRetV3${T_POST_LBL}", 1,
1163 "${T_US}IndUpdRetV4${T_POST_LBL}", 1,
1164 "${T_US}IndUpdRetV5${T_POST_LBL}", 1,
1165 "${T_US}IndUpdRetV6${T_POST_LBL}", 1,
1166 "${T_US}IndUpdRetV7${T_POST_LBL}", 1,
1167 "${T_US}PrimUnderflow${T_POST_LBL}", 1,
1168 "${T_US}StackUnderflowEnterNode${T_POST_LBL}", 1,
1169 "${T_US}StdErrorCode${T_POST_LBL}", 1,
1170 "${T_US}UnderflowVect0${T_POST_LBL}", 1,
1171 "${T_US}UnderflowVect1${T_POST_LBL}", 1,
1172 "${T_US}UnderflowVect2${T_POST_LBL}", 1,
1173 "${T_US}UnderflowVect3${T_POST_LBL}", 1,
1174 "${T_US}UnderflowVect4${T_POST_LBL}", 1,
1175 "${T_US}UnderflowVect5${T_POST_LBL}", 1,
1176 "${T_US}UnderflowVect6${T_POST_LBL}", 1,
1177 "${T_US}UnderflowVect7${T_POST_LBL}", 1,
1178 "${T_US}UpdErr${T_POST_LBL}", 1,
1179 "${T_US}UpdatePAP${T_POST_LBL}", 1,
1180 "${T_US}WorldStateToken${T_POST_LBL}", 1,
1181 "${T_US}_Enter_Internal${T_POST_LBL}", 1,
1182 "${T_US}_PRMarking_MarkNextAStack${T_POST_LBL}", 1,
1183 "${T_US}_PRMarking_MarkNextBStack${T_POST_LBL}", 1,
1184 "${T_US}_PRMarking_MarkNextCAF${T_POST_LBL}", 1,
1185 "${T_US}_PRMarking_MarkNextGA${T_POST_LBL}", 1,
1186 "${T_US}_PRMarking_MarkNextRoot${T_POST_LBL}", 1,
1187 "${T_US}_PRMarking_MarkNextSpark${T_POST_LBL}", 1,
1188 "${T_US}_PRMarking_MarkNextEvent${T_POST_LBL}", 1,
1189 "${T_US}_PRMarking_MarkNextClosureInFetchBuffer${T_POST_LBL}", 1,
1190 "${T_US}_Scavenge_Forward_Ref${T_POST_LBL}", 1,
1191 "${T_US}__std_entry_error__${T_POST_LBL}", 1,
1192 "${T_US}_startMarkWorld${T_POST_LBL}", 1,
1193 "${T_US}resumeThread${T_POST_LBL}", 1,
1194 "${T_US}startCcRegisteringWorld${T_POST_LBL}", 1,
1195 "${T_US}startEnterFloat${T_POST_LBL}", 1,
1196 "${T_US}startEnterInt${T_POST_LBL}", 1,
1197 "${T_US}startPerformIO${T_POST_LBL}", 1,
1198 "${T_US}startStgWorld${T_POST_LBL}", 1,
1199 "${T_US}stopPerformIO${T_POST_LBL}", 1
1204 The following table reversal is used for both info tables and return
1205 vectors. In both cases, we remove the first entry from the table,
1206 reverse the table, put the label at the end, and paste some code
1207 (that which is normally referred to by the first entry in the table)
1208 right after the table itself. (The code pasting is done elsewhere.)
1212 local($symb, $tbl, $discard1) = @_;
1214 local($before) = '';
1216 local(@imports) = (); # hppa only
1219 local(@lines) = split(/\n/, $tbl);
1220 local($i, $extra, $words_to_pad, $j);
1222 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t${T_DOT_WORD}\s+/o; $i++) {
1223 $label .= $lines[$i] . "\n",
1224 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1225 || $lines[$i] =~ /${T_DOT_GLOBAL}/o
1226 || $lines[$i] =~ /^${T_US}vtbl_\S+${T_POST_LBL}$/o;
1228 $before .= $lines[$i] . "\n"; # otherwise...
1231 if ( $TargetPlatform !~ /^hppa/ ) {
1232 for ( ; $i <= $#lines && $lines[$i] =~ /^\t${T_DOT_WORD}\s+/o; $i++) {
1233 push(@words, $lines[$i]);
1235 } else { # hppa weirdness
1236 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1237 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1238 push(@imports, $lines[$i]);
1240 # We don't use HP's ``function pointers''
1241 # We just use labels in code space, like normal people
1242 $lines[$i] =~ s/P%//;
1243 push(@words, $lines[$i]);
1248 # now throw away the first word (entry code):
1249 shift(@words) if $discard1;
1251 # Padding removed to reduce code size and improve performance on Pentiums.
1253 # for 486-cache-friendliness, we want our tables aligned
1254 # on 16-byte boundaries (.align 4). Let's pad:
1255 # $extra = ($#words + 1) % 4;
1256 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1257 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1259 for (; $i <= $#lines; $i++) {
1260 $after .= $lines[$i] . "\n";
1263 # Alphas:If we have anonymous text (not part of a procedure), the
1264 # linker may complain about missing exception information. Bleh.
1265 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1266 $before = "\t.ent $1\n" . $before;
1267 $after .= "\t.end $1\n";
1271 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1272 . join("\n", (reverse @words)) . "\n"
1275 # print STDERR "before=$before\n";
1276 # print STDERR "label=$label\n";
1277 # print STDERR "words=",(reverse @words),"\n";
1278 # print STDERR "after=$after\n";
1285 sub mini_mangle_asm_i386 {
1286 local($in_asmf, $out_asmf) = @_;
1288 &init_TARGET_STUFF();
1290 open(INASM, "< $in_asmf")
1291 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1292 open(OUTASM,"> $out_asmf")
1293 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1299 /^${T_US}(PerformGC|StackOverflow|Yield|PerformReschedule)_wrapper${T_POST_LBL}\n/o;
1300 print OUTASM "\tmovl \%esp, ${T_US}__temp_esp\n";
1301 print OUTASM "\tmovl \%eax, ${T_US}__temp_eax\n";
1305 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1306 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1310 The HP is a major nuisance. The threaded code mangler moved info
1311 tables from data space to code space, but unthreaded code in the RTS
1312 still has references to info tables in data space. Since the HP
1313 linker is very precise about where symbols live, we need to patch the
1314 references in the unthreaded RTS as well.
1317 sub mini_mangle_asm_hppa {
1318 local($in_asmf, $out_asmf) = @_;
1320 open(INASM, "< $in_asmf")
1321 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1322 open(OUTASM,"> $out_asmf")
1323 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1326 s/_info,DATA/_info,CODE/; # Move _info references to code space
1332 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1333 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1336 # make "require"r happy...