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)/ ) {
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"; # .align 4 is 486-cache friendly
125 $T_HDR_misc = "\.text\n\t\.align 2,0x90\n";
126 $T_HDR_data = "\.data\n\t\.align 2\n"; # ToDo: change align??
127 $T_HDR_consist = "\.text\n";
128 $T_HDR_closure = "\.data\n\t\.align 2\n"; # ToDo: change align?
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 $T_CONST_LBL = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
144 $T_X86_PRE_LLBL_PAT = '\.L';
145 $T_X86_PRE_LLBL = '.L';
146 $T_X86_BADJMP = '^\tjmp [^\.\*]';
148 $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)';
149 $T_COPY_DIRVS = '\.(globl)';
151 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
152 $T_DOT_WORD = '\.long';
153 $T_DOT_GLOBAL = '\.globl';
154 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
155 $T_HDR_misc = "\.text\n\t\.align 16\n";
156 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
157 $T_HDR_consist = "\.text\n";
158 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
159 $T_HDR_info = "\.text\n\t\.align 16\n"; # NB: requires padding
160 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
161 $T_HDR_fast = "\.text\n\t\.align 16\n";
162 $T_HDR_vector = "\.text\n\t\.align 16\n"; # NB: requires padding
163 $T_HDR_direct = "\.text\n\t\.align 16\n";
165 #--------------------------------------------------------#
166 } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
168 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
169 $T_US = '_'; # _ if symbols have an underscore on the front
170 $T_DO_GC = '_PerformGC_wrapper';
171 $T_PRE_APP = '^# MAY NOT APPLY'; # regexp that says what comes before APP/NO_APP
172 $T_CONST_LBL = '^LC(\d+):$';
175 $T_MOVE_DIRVS = '(\s*(\.align\s+\d+|\.proc\s+\d+|\.const|\.cstring|\.globl\s+\S+|\.text|\.data|\.even|\.stab[^n].*)\n)';
176 $T_COPY_DIRVS = '\.(globl|proc|stab)';
177 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
179 $T_DOT_WORD = '\.long';
180 $T_DOT_GLOBAL = '\.globl';
181 $T_HDR_literal = "\.text\n\t\.even\n";
182 $T_HDR_misc = "\.text\n\t\.even\n";
183 $T_HDR_data = "\.data\n\t\.even\n";
184 $T_HDR_consist = "\.text\n";
185 $T_HDR_closure = "\.data\n\t\.even\n";
186 $T_HDR_info = "\.text\n\t\.even\n";
187 $T_HDR_entry = "\.text\n\t\.even\n";
188 $T_HDR_fast = "\.text\n\t\.even\n";
189 $T_HDR_vector = "\.text\n\t\.even\n";
190 $T_HDR_direct = "\.text\n\t\.even\n";
192 #--------------------------------------------------------#
193 } elsif ( $TargetPlatform =~ /^mips-.*/ ) {
195 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
196 $T_US = ''; # _ if symbols have an underscore on the front
197 $T_DO_GC = 'PerformGC_wrapper';
198 $T_PRE_APP = '^\s*#'; # regexp that says what comes before APP/NO_APP
199 $T_CONST_LBL = '^\$LC(\d+):$'; # regexp for what such a lbl looks like
202 $T_MOVE_DIRVS = '(\s*(\.align\s+\d+|\.(globl|ent)\s+\S+|\.text|\.r?data)\n)';
203 $T_COPY_DIRVS = '\.(globl|ent)';
205 $T_hsc_cc_PAT = 'I WAS TOO LAZY TO DO THIS BIT (WDP 95/05)';
206 $T_DOT_WORD = '\.word';
207 $T_DOT_GLOBAL = '\t\.globl';
208 $T_HDR_literal = "\t\.rdata\n\t\.align 2\n";
209 $T_HDR_misc = "\t\.text\n\t\.align 2\n";
210 $T_HDR_data = "\t\.data\n\t\.align 2\n";
211 $T_HDR_consist = 'TOO LAZY TO DO THIS TOO';
212 $T_HDR_closure = "\t\.data\n\t\.align 2\n";
213 $T_HDR_info = "\t\.text\n\t\.align 2\n";
214 $T_HDR_entry = "\t\.text\n\t\.align 2\n";
215 $T_HDR_fast = "\t\.text\n\t\.align 2\n";
216 $T_HDR_vector = "\t\.text\n\t\.align 2\n";
217 $T_HDR_direct = "\t\.text\n\t\.align 2\n";
219 #--------------------------------------------------------#
220 } elsif ( $TargetPlatform =~ /^powerpc-.*/ ) {
222 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
223 $T_US = '\.'; # _ if symbols have an underscore on the front
224 $T_DO_GC = 'PerformGC_wrapper';
225 $T_PRE_APP = 'NOT APPLICABLE'; # regexp that says what comes before APP/NO_APP
226 $T_CONST_LBL = '^LC\.\.(\d+):$'; # regexp for what such a lbl looks like
229 $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)';
230 $T_COPY_DIRVS = '\.(globl)';
232 $T_hsc_cc_PAT = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
233 $T_DOT_WORD = '\.long';
234 $T_DOT_GLOBAL = '\.globl';
235 $T_HDR_literal = "\.section\t\.rodata\n"; # or just use .text??? (WDP 95/11)
236 $T_HDR_misc = "\.text\n\t\.align 16\n";
237 $T_HDR_data = "\.data\n\t\.align 4\n"; # ToDo: change align??
238 $T_HDR_consist = "\.text\n";
239 $T_HDR_closure = "\.data\n\t\.align 4\n"; # ToDo: change align?
240 $T_HDR_info = "\.text\n\t\.align 16\n"; # NB: requires padding
241 $T_HDR_entry = "\.text\n"; # no .align so we're right next to _info (arguably wrong...?)
242 $T_HDR_fast = "\.text\n\t\.align 16\n";
243 $T_HDR_vector = "\.text\n\t\.align 16\n"; # NB: requires padding
244 $T_HDR_direct = "\.text\n\t\.align 16\n";
246 #--------------------------------------------------------#
247 } elsif ( $TargetPlatform =~ /^sparc-.*-solaris2/ ) {
249 $T_STABBY = 0; # 1 iff .stab things (usually if a.out format)
250 $T_US = ''; # _ if symbols have an underscore on the front
251 $T_DO_GC = 'PerformGC_wrapper';
252 $T_PRE_APP = 'DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
253 $T_CONST_LBL = '^\.LLC(\d+):$'; # regexp for what such a lbl looks like
256 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*|\.section.*|\s+\.type.*|\s+\.size.*)\n)';
257 $T_COPY_DIRVS = '\.(global|proc|stab)';
259 $T_hsc_cc_PAT = '\.asciz.*\)(hsc|cc) (.*)\\\\t(.*)"';
260 $T_DOT_WORD = '\.word';
261 $T_DOT_GLOBAL = '\.global';
262 $T_HDR_literal = "\.text\n\t\.align 8\n";
263 $T_HDR_misc = "\.text\n\t\.align 4\n";
264 $T_HDR_data = "\.data\n\t\.align 8\n";
265 $T_HDR_consist = "\.text\n";
266 $T_HDR_closure = "\.data\n\t\.align 4\n";
267 $T_HDR_info = "\.text\n\t\.align 4\n";
268 $T_HDR_entry = "\.text\n\t\.align 4\n";
269 $T_HDR_fast = "\.text\n\t\.align 4\n";
270 $T_HDR_vector = "\.text\n\t\.align 4\n";
271 $T_HDR_direct = "\.text\n\t\.align 4\n";
273 #--------------------------------------------------------#
274 } elsif ( $TargetPlatform =~ /^sparc-.*-sunos4/ ) {
276 $T_STABBY = 1; # 1 iff .stab things (usually if a.out format)
277 $T_US = '_'; # _ if symbols have an underscore on the front
278 $T_DO_GC = '_PerformGC_wrapper';
279 $T_PRE_APP = '^# DOES NOT SEEM TO APPLY'; # regexp that says what comes before APP/NO_APP
280 $T_CONST_LBL = '^LC(\d+):$';
283 $T_MOVE_DIRVS = '^((\s+\.align\s+\d+|\s+\.proc\s+\d+|\s+\.global\s+\S+|\.text|\.data|\.stab.*)\n)';
284 $T_COPY_DIRVS = '\.(global|proc|stab)';
285 $T_hsc_cc_PAT = '\.ascii.*\)(hsc|cc) (.*)\\\\11"\n\t\.ascii\s+"(.*)\\\\0"';
287 $T_DOT_WORD = '\.word';
288 $T_DOT_GLOBAL = '^\t\.global';
289 $T_HDR_literal = "\.text\n\t\.align 8\n";
290 $T_HDR_misc = "\.text\n\t\.align 4\n";
291 $T_HDR_data = "\.data\n\t\.align 8\n";
292 $T_HDR_consist = "\.text\n";
293 $T_HDR_closure = "\.data\n\t\.align 4\n";
294 $T_HDR_info = "\.text\n\t\.align 4\n";
295 $T_HDR_entry = "\.text\n\t\.align 4\n";
296 $T_HDR_fast = "\.text\n\t\.align 4\n";
297 $T_HDR_vector = "\.text\n\t\.align 4\n";
298 $T_HDR_direct = "\.text\n\t\.align 4\n";
300 #--------------------------------------------------------#
302 print STDERR "$Pgm: don't know how to mangle assembly language for: $TargetPlatform\n";
307 print STDERR "T_STABBY: $T_STABBY\n";
308 print STDERR "T_US: $T_US\n";
309 print STDERR "T_DO_GC: $T_DO_GC\n";
310 print STDERR "T_PRE_APP: $T_PRE_APP\n";
311 print STDERR "T_CONST_LBL: $T_CONST_LBL\n";
312 print STDERR "T_POST_LBL: $T_POST_LBL\n";
313 if ( $TargetPlatform =~ /^i386-/ ) {
314 print STDERR "T_X86_PRE_LLBL_PAT: $T_X86_PRE_LLBL_PAT\n";
315 print STDERR "T_X86_PRE_LLBL: $T_X86_PRE_LLBL\n";
316 print STDERR "T_X86_BADJMP: $T_X86_BADJMP\n";
318 print STDERR "T_MOVE_DIRVS: $T_MOVE_DIRVS\n";
319 print STDERR "T_COPY_DIRVS: $T_COPY_DIRVS\n";
320 print STDERR "T_hsc_cc_PAT: $T_hsc_cc_PAT\n";
321 print STDERR "T_DOT_WORD: $T_DOT_WORD\n";
322 print STDERR "T_HDR_literal: $T_HDR_literal\n";
323 print STDERR "T_HDR_misc: $T_HDR_misc\n";
324 print STDERR "T_HDR_data: $T_HDR_data\n";
325 print STDERR "T_HDR_consist: $T_HDR_consist\n";
326 print STDERR "T_HDR_closure: $T_HDR_closure\n";
327 print STDERR "T_HDR_info: $T_HDR_info\n";
328 print STDERR "T_HDR_entry: $T_HDR_entry\n";
329 print STDERR "T_HDR_fast: $T_HDR_fast\n";
330 print STDERR "T_HDR_vector: $T_HDR_vector\n";
331 print STDERR "T_HDR_direct: $T_HDR_direct\n";
337 %************************************************************************
339 \subsection{Mangle away}
341 %************************************************************************
345 local($in_asmf, $out_asmf) = @_;
347 # multi-line regexp matching:
350 &init_TARGET_STUFF();
351 &init_FUNNY_THINGS();
353 open(INASM, "< $in_asmf")
354 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
355 open(OUTASM,"> $out_asmf")
356 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
358 # read whole file, divide into "chunks":
359 # record some info about what we've found...
361 @chk = (); # contents of the chunk
362 $numchks = 0; # number of them
363 @chkcat = (); # what category of thing in each chunk
364 @chksymb = (); # what symbol(base) is defined in this chunk
365 %slowchk = (); # ditto, its regular "slow" entry code
366 %fastchk = (); # ditto, fast entry code
367 %closurechk = (); # ditto, the (static) closure
368 %infochk = (); # given a symbol base, say what chunk its info tbl is in
369 %vectorchk = (); # ditto, return vector table
370 %directchk = (); # ditto, direct return code
371 $EXTERN_DECLS = ''; # .globl <foo> .text (MIPS only)
373 $i = 0; $chkcat[0] = 'misc'; $chk[0] = '';
376 next if $T_STABBY && /^\.stab.*${T_US}__stg_split_marker/o;
377 next if $T_STABBY && /^\.stab.*ghc.*c_ID/;
378 next if /${T_PRE_APP}(NO_)?APP/o;
380 next if /^;/ && $TargetPlatform =~ /^hppa/;
382 next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^mips-/;
384 if ( $TargetPlatform =~ /^mips-/
385 && /^\t\.(globl \S+ \.text|comm\t)/ ) {
386 $EXTERN_DECLS .= $_ unless /(__DISCARD__|\b(PK_|ASSIGN_)(FLT|DBL)\b)/;
388 } elsif ( /^\s+/ ) { # most common case first -- a simple line!
389 # duplicated from the bottom
393 } elsif ( /\.\.ng:$/ && $TargetPlatform =~ /^alpha-/ ) {
394 # Alphas: Local labels not to be confused with new chunks
397 # NB: all the rest start with a non-space
399 } elsif ( $TargetPlatform =~ /^mips-/
400 && /^\d+:/ ) { # a funny-looking very-local label
403 } elsif ( /$T_CONST_LBL/o ) {
405 $chkcat[$i] = 'literal';
408 } elsif ( /^${T_US}__stg_split_marker(\d+)${T_POST_LBL}$/o ) {
410 $chkcat[$i] = 'splitmarker';
413 } elsif ( /^${T_US}([A-Za-z0-9_]+)_info${T_POST_LBL}$/o ) {
416 $chkcat[$i] = 'infotbl';
417 $chksymb[$i] = $symb;
419 die "Info table already? $symb; $i\n" if defined($infochk{$symb});
421 $infochk{$symb} = $i;
423 } elsif ( /^${T_US}([A-Za-z0-9_]+)_entry${T_POST_LBL}$/o ) {
425 $chkcat[$i] = 'slow';
430 } elsif ( /^${T_US}([A-Za-z0-9_]+)_fast\d+${T_POST_LBL}$/o ) {
432 $chkcat[$i] = 'fast';
437 } elsif ( /^${T_US}([A-Za-z0-9_]+)_closure${T_POST_LBL}$/o ) {
439 $chkcat[$i] = 'closure';
442 $closurechk{$1} = $i;
444 } elsif ( /^${T_US}ghc.*c_ID${T_POST_LBL}/o ) {
446 $chkcat[$i] = 'consist';
448 } elsif ( /^(${T_US}__gnu_compiled_c|gcc2_compiled\.)${T_POST_LBL}/o ) {
451 } elsif ( /^${T_US}ErrorIO_call_count${T_POST_LBL}$/o # HACK!!!!
452 || /^${T_US}[A-Za-z0-9_]+\.\d+${T_POST_LBL}$/o
453 || /^${T_US}.*_CAT${T_POST_LBL}$/o # PROF: _entryname_CAT
454 || /^${T_US}CC_.*_struct${T_POST_LBL}$/o # PROF: _CC_ccident_struct
455 || /^${T_US}.*_done${T_POST_LBL}$/o # PROF: _module_done
456 || /^${T_US}_module_registered${T_POST_LBL}$/o # PROF: _module_registered
459 $chkcat[$i] = 'data';
462 } elsif ( /^([A-Za-z0-9_]+)\s+\.comm/ && $TargetPlatform =~ /^hppa/ ) {
467 } elsif ( /^${T_US}(ret_|djn_)/o ) {
469 $chkcat[$i] = 'misc';
472 } elsif ( /^${T_US}vtbl_([A-Za-z0-9_]+)${T_POST_LBL}$/o ) {
474 $chkcat[$i] = 'vector';
479 } elsif ( /^${T_US}([A-Za-z0-9_]+)DirectReturn${T_POST_LBL}$/o ) {
481 $chkcat[$i] = 'direct';
486 } elsif ( /^${T_US}[A-Za-z0-9_]+_upd${T_POST_LBL}$/o ) {
488 $chkcat[$i] = 'misc';
491 } elsif ( $TargetPlatform =~ /^i386-.*-solaris2/
492 && /^(_uname|uname|stat|fstat):/ ) {
493 # for some utterly bizarre reason, this platform
494 # likes to drop little local C routines with these names
495 # into each and every .o file that #includes the
496 # relevant system .h file. Yuck. We just don't
497 # tolerate them in .hc files (which we are processing
498 # here). If you need to call one of these things from
499 # Haskell, make a call to your own C wrapper, then
500 # put that C wrapper (which calls one of these) in a
501 # plain .c file. WDP 95/12
503 $chkcat[$i] = 'toss';
506 } elsif ( /^${T_US}[A-Za-z0-9_]/o
507 && ( $TargetPlatform !~ /^hppa/ # need to avoid local labels in this case
511 print STDERR "Funny global thing?: $_"
512 unless $KNOWN_FUNNY_THING{$thing}
513 || /^${T_US}_(PRIn|PRStart).*${T_POST_LBL}$/o # pointer reversal GC routines
514 || /^${T_US}CC_.*${T_POST_LBL}$/o # PROF: _CC_ccident
515 || /^${T_US}_reg.*${T_POST_LBL}$/o; # PROF: __reg<module>
517 $chkcat[$i] = 'misc';
520 } else { # simple line (duplicated at the top)
525 $numchks = $#chk + 1;
527 # the division into chunks is imperfect;
528 # we throw some things over the fence into the next
531 # also, there are things we would like to know
532 # about the whole module before we start spitting
535 local($FIRST_MANGLABLE) = ($TargetPlatform =~ /^(alpha-|hppa|mips-)/) ? 1 : 0;
537 # print STDERR "first chunk to mangle: $FIRST_MANGLABLE\n";
539 # Alphas: NB: we start meddling at chunk 1, not chunk 0
540 # The first ".rdata" is quite magical; as of GCC 2.7.x, it
541 # spits a ".quad 0" in after the v first ".rdata"; we
542 # detect this special case (tossing the ".quad 0")!
543 local($magic_rdata_seen) = 0;
545 # HPPAs, MIPSen: also start medding at chunk 1
547 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
548 $c = $chk[$i]; # convenience copy
550 # print STDERR "\nCHK $i (BEFORE) (",$chkcat[$i],"):\n", $c;
552 # toss all prologue stuff; HPPA is pretty weird
554 $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
556 # be slightly paranoid to make sure there's
557 # nothing surprising in there
558 if ( $c =~ /--- BEGIN ---/ ) {
559 if (($p, $r) = split(/--- BEGIN ---/, $c)) {
561 if ($TargetPlatform =~ /^i386-/) {
562 $p =~ s/^\tpushl \%edi\n//;
563 $p =~ s/^\tpushl \%esi\n//;
564 $p =~ s/^\tsubl \$\d+,\%esp\n//;
565 } elsif ($TargetPlatform =~ /^m68k-/) {
566 $p =~ s/^\tlink a6,#-?\d.*\n//;
567 $p =~ s/^\tmovel d2,sp\@-\n//;
568 $p =~ s/^\tmovel d5,sp\@-\n//; # SMmark.* only?
569 $p =~ s/^\tmoveml \#0x[0-9a-f]+,sp\@-\n//; # SMmark.* only?
570 } elsif ($TargetPlatform =~ /^mips-/) {
571 # the .frame/.mask/.fmask that we use is the same
572 # as that produced by GCC for miniInterpret; this
573 # gives GDB some chance of figuring out what happened
574 $FRAME = "\t.frame\t\$sp,2168,\$31\n\t.mask\t0x90000000,-4\n\t.fmask\t0x00000000,0\n";
575 $p =~ s/^\t\.(frame).*\n/__FRAME__/g;
576 $p =~ s/^\t\.(mask|fmask).*\n//g;
577 $p =~ s/^\t\.cprestore.*\n/\t\.cprestore 416\n/; # 16 + 100 4-byte args
578 $p =~ s/^\tsubu\t\$sp,\$sp,\d+\n//;
579 $p =~ s/^\tsw\t\$31,\d+\(\$sp\)\n//;
580 $p =~ s/^\tsw\t\$fp,\d+\(\$sp\)\n//;
581 $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
582 $p =~ s/__FRAME__/$FRAME/;
584 print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
587 die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
589 # glue together what's left
594 # toss all epilogue stuff; again, paranoidly
595 if ( $c =~ /--- END ---/ ) {
596 if (($r, $e) = split(/--- END ---/, $c)) {
597 if ($TargetPlatform =~ /^i386-/) {
599 $e =~ s/^\tpopl \%edi\n//;
600 $e =~ s/^\tpopl \%esi\n//;
601 $e =~ s/^\taddl \$\d+,\%esp\n//;
602 } elsif ($TargetPlatform =~ /^m68k-/) {
603 $e =~ s/^\tunlk a6\n//;
605 } elsif ($TargetPlatform =~ /^mips-/) {
606 $e =~ s/^\tlw\t\$31,\d+\(\$sp\)\n//;
607 $e =~ s/^\tlw\t\$fp,\d+\(\$sp\)\n//;
608 $e =~ s/^\taddu\t\$sp,\$sp,\d+\n//;
609 $e =~ s/^\tj\t\$31\n//;
611 print STDERR "$Pgm: unknown epilogue mangling? $TargetPlatform\n";
613 die "Epilogue junk?: $e\n" if $e =~ /^\t[^\.]/;
615 # glue together what's left
617 $c =~ s/\n\t\n/\n/; # junk blank line
621 # On SPARCs, we don't do --- BEGIN/END ---, we just
622 # toss the register-windowing save/restore/ret* instructions
624 if ( $TargetPlatform =~ /^sparc-/ ) {
625 $c =~ s/^\t(save .*|restore|ret|retl)\n//g;
626 # throw away PROLOGUE comments
627 $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
630 # On Alphas, the prologue mangling is done a little later (below)
632 # toss all calls to __DISCARD__
633 $c =~ s/^\t(call|jbsr|jal) ${T_US}__DISCARD__\n//go;
635 # MIPS: that may leave some gratuitous asm macros around
636 # (no harm done; but we get rid of them to be tidier)
637 $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/
638 if $TargetPlatform =~ /^mips-/;
640 # toss stack adjustment after DoSparks
641 $c =~ s/^(\tjbsr _DoSparks\n)\taddqw #8,sp/$1/g
642 if $TargetPlatform =~ /^m68k-/; # this looks old...
644 if ( $TargetPlatform =~ /^alpha-/ &&
645 ! $magic_rdata_seen &&
646 $c =~ /^\s*\.rdata\n\t\.quad 0\n\t\.align \d\n/ ) {
647 $c =~ s/^\s*\.rdata\n\t\.quad 0\n\t\.align (\d)\n/\.rdata\n\t\.align $1\n/;
648 $magic_rdata_seen = 1;
651 # pick some end-things and move them to the next chunk
653 # pin a funny end-thing on (for easier matching):
654 $c .= 'FUNNY#END#THING';
656 while ( $c =~ /${T_MOVE_DIRVS}FUNNY#END#THING/o ) {
659 if ( $i < ($numchks - 1)
660 && ( $to_move =~ /${T_COPY_DIRVS}/
661 || ($TargetPlatform =~ /^hppa/ && $to_move =~ /align/ && $chkcat[$i+1] eq 'literal') )) {
662 $chk[$i + 1] = $to_move . $chk[$i + 1];
663 # otherwise they're tossed
666 $c =~ s/${T_MOVE_DIRVS}FUNNY#END#THING/FUNNY#END#THING/o;
669 if ( $TargetPlatform =~ /^alpha-/ && $c =~ /^\t\.ent\s+(\S+)/ ) {
671 # toss all prologue stuff, except for loading gp, and the ..ng address
672 if (($p, $r) = split(/^\t\.prologue/, $c)) {
673 if (($keep, $junk) = split(/\.\.ng:/, $p)) {
674 $c = $keep . "..ng:\n";
676 print STDERR "malformed code block ($ent)?\n"
679 $c .= "\t.frame \$30,0,\$26,0\n\t.prologue" . $r;
682 $c =~ s/FUNNY#END#THING//;
684 # print STDERR "\nCHK $i (AFTER) (",$chkcat[$i],"):\n", $c;
686 $chk[$i] = $c; # update w/ convenience copy
689 if ( $TargetPlatform =~ /^alpha-/ ) {
690 # print out the header stuff first
691 $chk[0] =~ s/^(\t\.file.*)"(ghc\d+\.c)"/$1"$ifile_root.hc"/;
692 print OUTASM $chk[0];
694 } elsif ( $TargetPlatform =~ /^hppa/ ) {
695 print OUTASM $chk[0];
697 } elsif ( $TargetPlatform =~ /^mips-/ ) {
698 $chk[0] = "\t\.file\t1 \"$ifile_root.hc\"\n" . $chk[0];
700 # get rid of horrible "<dollar>Revision: .*$" strings
701 local(@lines0) = split(/\n/, $chk[0]);
703 while ( $z <= $#lines0 ) {
704 if ( $lines0[$z] =~ /^\t\.byte\t0x24,0x52,0x65,0x76,0x69,0x73,0x69,0x6f$/ ) {
707 while ( $z <= $#lines0 ) {
709 last if $lines0[$z] =~ /[,\t]0x0$/;
715 $chk[0] = join("\n", @lines0);
716 $chk[0] =~ s/\n\n+/\n/;
717 print OUTASM $chk[0];
720 # print out all the literal strings next
721 for ($i = 0; $i < $numchks; $i++) {
722 if ( $chkcat[$i] eq 'literal' ) {
723 print OUTASM $T_HDR_literal, $chk[$i];
724 print OUTASM "; end literal\n" if $TargetPlatform =~ /^hppa/; # for the splitter
726 $chkcat[$i] = 'DONE ALREADY';
730 # on the HPPA, print out all the bss next
731 if ( $TargetPlatform =~ /^hppa/ ) {
732 for ($i = 1; $i < $numchks; $i++) {
733 if ( $chkcat[$i] eq 'bss' ) {
734 print OUTASM "\t.SPACE \$PRIVATE\$\n\t.SUBSPA \$BSS\$\n\t.align 4\n";
735 print OUTASM $chk[$i];
737 $chkcat[$i] = 'DONE ALREADY';
742 for ($i = $FIRST_MANGLABLE; $i < $numchks; $i++) {
743 # print STDERR "$i: cat $chkcat[$i], symb $chksymb[$i]\n";
745 next if $chkcat[$i] eq 'DONE ALREADY';
747 if ( $chkcat[$i] eq 'misc' ) {
748 if ($chk[$i] ne '') {
749 print OUTASM $T_HDR_misc;
750 &print_doctored($chk[$i], 0);
753 } elsif ( $chkcat[$i] eq 'toss' ) {
754 print STDERR "*** NB: TOSSING code for $chksymb[$i] !!! ***\n";
756 } elsif ( $chkcat[$i] eq 'data' ) {
757 if ($chk[$i] ne '') {
758 print OUTASM $T_HDR_data;
759 print OUTASM $chk[$i];
762 } elsif ( $chkcat[$i] eq 'consist' ) {
763 if ( $chk[$i] =~ /$T_hsc_cc_PAT/o ) {
764 local($consist) = "$1.$2.$3";
766 $consist =~ s/\//./g;
768 $consist =~ s/[^A-Za-z0-9_.]/ZZ/g; # ToDo: properly?
769 print OUTASM $T_HDR_consist, "${consist}${T_POST_LBL}\n"
770 if $TargetPlatform !~ /^mips-/; # we just don't try in that case
772 print STDERR "Couldn't grok consistency: ", $chk[$i];
775 } elsif ( $chkcat[$i] eq 'splitmarker' ) {
776 # we can just re-constitute this one...
777 # NB: we emit _three_ underscores no matter what,
778 # so ghc-split doesn't have to care.
779 print OUTASM "___stg_split_marker",$chksymb[$i],"${T_POST_LBL}\n";
781 } elsif ( $chkcat[$i] eq 'closure'
782 || $chkcat[$i] eq 'infotbl'
783 || $chkcat[$i] eq 'slow'
784 || $chkcat[$i] eq 'fast' ) { # do them in that order
785 $symb = $chksymb[$i];
788 if ( defined($closurechk{$symb}) ) {
789 print OUTASM $T_HDR_closure;
790 print OUTASM $chk[$closurechk{$symb}];
791 $chkcat[$closurechk{$symb}] = 'DONE ALREADY';
795 if ( defined($infochk{$symb}) ) {
797 print OUTASM $T_HDR_info;
798 print OUTASM &rev_tbl($symb, $chk[$infochk{$symb}], 1);
799 # entry code will be put here!
802 if ( $chk[$infochk{$symb}] =~ /${T_DOT_WORD}\s+([A-Za-z0-9_]+_entry)$/o
803 && $1 ne "${T_US}${symb}_entry" ) {
804 print STDERR "!!! entry point???\n",$chk[$infochk{$symb}];
807 $chkcat[$infochk{$symb}] = 'DONE ALREADY';
811 if ( defined($slowchk{$symb}) ) {
813 # teach it to drop through to the fast entry point:
814 $c = $chk[$slowchk{$symb}];
816 if ( defined($fastchk{$symb}) ) {
817 if ( $TargetPlatform =~ /^alpha-/ ) {
818 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
819 } elsif ( $TargetPlatform =~ /^hppa/ ) {
820 $c =~ s/^\s+ldil.*\n\s+ldo.*\n\s+bv.*\n(.*\n)?\s+\.EXIT/$1\t.EXIT/;
821 } elsif ( $TargetPlatform =~ /^i386-/ ) {
822 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%edx\n\tjmp \*\%edx\n//;
823 $c =~ s/^\tmovl \$${T_US}${symb}_fast\d+,\%eax\n\tjmp \*\%eax\n//;
824 } elsif ( $TargetPlatform =~ /^mips-/ ) {
825 $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
826 } elsif ( $TargetPlatform =~ /^m68k-/ ) {
827 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n\tnop\n//;
828 $c =~ s/^\tjmp ${T_US}${symb}_fast\d+.*\n//;
829 } elsif ( $TargetPlatform =~ /^sparc-/ ) {
830 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n\tnop\n//;
831 $c =~ s/^\tcall ${T_US}${symb}_fast\d+,.*\n(\t[a-z].*\n)/$1/;
833 print STDERR "$Pgm: mystery slow-fast dropthrough: $TargetPlatform\n";
837 if ( $TargetPlatform !~ /^(alpha-|hppa|mips-)/ ) {
838 # On alphas, hppa: no very good way to look for "dangling"
839 # references to fast-entry point.
840 # (questionable re hppa and mips...)
841 print STDERR "still has jump to fast entry point:\n$c"
842 if $c =~ /${T_US}${symb}_fast/; # NB: paranoia
845 print OUTASM $T_HDR_entry;
847 &print_doctored($c, 1); # NB: the 1!!!
849 $chkcat[$slowchk{$symb}] = 'DONE ALREADY';
853 if ( defined($fastchk{$symb}) ) {
854 if ( ! defined($slowchk{$symb})
855 # ToDo: the || clause can go once we're no longer
856 # concerned about producing exactly the same output as before
857 || $TargetPlatform =~ /^(m68k|sparc|i386)-/
859 print OUTASM $T_HDR_fast;
861 &print_doctored($chk[$fastchk{$symb}], 0);
862 $chkcat[$fastchk{$symb}] = 'DONE ALREADY';
865 } elsif ( $chkcat[$i] eq 'vector'
866 || $chkcat[$i] eq 'direct' ) { # do them in that order
867 $symb = $chksymb[$i];
870 if ( defined($vectorchk{$symb}) ) {
871 print OUTASM $T_HDR_vector;
872 print OUTASM &rev_tbl($symb, $chk[$vectorchk{$symb}], 0);
873 # direct return code will be put here!
874 $chkcat[$vectorchk{$symb}] = 'DONE ALREADY';
878 if ( defined($directchk{$symb}) ) {
879 print OUTASM $T_HDR_direct;
880 &print_doctored($chk[$directchk{$symb}], 0);
881 $chkcat[$directchk{$symb}] = 'DONE ALREADY';
883 } elsif ( $TargetPlatform =~ /^alpha-/ ) {
884 # Alphas: the commented nop is for the splitter, to ensure
885 # that no module ends with a label as the very last
886 # thing. (The linker will adjust the label to point
887 # to the first code word of the next module linked in,
888 # even if alignment constraints cause the label to move!)
890 print OUTASM "\t# nop\n";
894 &tidy_up_and_die(1,"$Pgm: unknown chkcat (ghc-asm: $TargetPlatform)\n$chkcat[$i]\n$chk[$i]\n");
898 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
899 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
904 sub mash_hppa_prologue { # OK, epilogue, too
907 # toss all prologue stuff
908 s/^\s+\.ENTRY[^\0]*--- BEGIN ---/\t.ENTRY/;
910 # Lie about our .CALLINFO
911 s/^\s+\.CALLINFO.*$/\t.CALLINFO NO_CALLS,NO_UNWIND/;
918 # toss all epilogue stuff
919 s/^\s+--- END ---[^\0]*\.EXIT/\t.EXIT/;
921 # Sorry; we moved the _info stuff to the code segment.
922 s/_info,DATA/_info,CODE/g;
930 local($_, $need_fallthru_patch) = @_;
932 if ( $TargetPlatform !~ /^i386-/
933 || ! /^\t[a-z]/ ) { # no instructions in here, apparently
937 # OK, must do some x86 **HACKING**
939 local($entry_patch) = '';
940 local($exit_patch) = '';
941 local($call_entry_patch)= '';
942 local($call_exit_patch) = '';
944 #OLD: # first, convert calls to *very magic form*: (ToDo: document
948 # call _?PerformGC_wrapper
952 # call _?PerformGC_wrapper
954 # The reason we do this now is to remove the apparent use of
955 # %esp, which would throw off the "what patch code do we need"
958 # Special macros in ghc/includes/COptWraps.lh, used in
959 # ghc/runtime/CallWrap_C.lc, are required for this to work!
962 s/^\tpushl \$(\d+)\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \$$1,\%eax\n\tcall ${T_DO_GC}\n/go;
963 s/^\tpushl \%eax\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tcall ${T_DO_GC}\n/go;
964 s/^\tpushl \%edx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%edx,\%eax\n\tcall ${T_DO_GC}\n/go;
966 #= if ( $StolenX86Regs <= 4 ) { # %ecx is ordinary reg
967 #= s/^\tpushl \%ecx\n\tcall ${T_DO_GC}\n\taddl \$4,\%esp\n/\tmovl \%ecx,\%eax\n\tcall ${T_DO_GC}\n/go;
970 # gotta watch out for weird instructions that
971 # invisibly smash various regs:
972 # rep* %ecx used for counting
973 # scas* %edi used for destination index
974 # cmps* %e[sd]i used for indices
975 # loop* %ecx used for counting
980 # * use of STG reg [ nn(%ebx) ] where no machine reg avail
982 # * GCC used an "STG reg" for its own purposes
984 # * some secret uses of machine reg, requiring STG reg
985 # to be saved/restored
987 # The most dangerous "GCC uses" of an "STG reg" are when
988 # the reg holds the target of a jmp -- it's tricky to
989 # insert the patch-up code before we get to the target!
990 # So here we change the jmps:
992 # --------------------------------------------------------
993 # it can happen that we have jumps of the form...
994 # jmp *<something involving %esp>
996 # jmp <something involving another naughty register...>
998 # a reasonably-common case is:
1000 # movl $_blah,<bad-reg>
1003 # which is easily fixed as:
1005 # sigh! try to hack around it...
1008 if ($StolenX86Regs <= 2 ) { # YURGH! spurious uses of esi?
1009 s/^\tmovl (.*),\%esi\n\tjmp \*%esi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1010 s/^\tjmp \*(-?\d*)\((.*\%esi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1011 s/^\tjmp \*\%esi\n/\tmovl \%esi,\%eax\n\tjmp \*\%eax\n/g;
1012 die "$Pgm: (mangler) still have jump involving \%esi!\n$_"
1013 if /(jmp|call) .*\%esi/;
1015 if ($StolenX86Regs <= 3 ) { # spurious uses of edi?
1016 s/^\tmovl (.*),\%edi\n\tjmp \*%edi\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1017 s/^\tjmp \*(-?\d*)\((.*\%edi.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1018 s/^\tjmp \*\%edi\n/\tmovl \%edi,\%eax\n\tjmp \*\%eax\n/g;
1019 die "$Pgm: (mangler) still have jump involving \%edi!\n$_"
1020 if /(jmp|call) .*\%edi/;
1022 #= if ($StolenX86Regs <= 4 ) { # spurious uses of ecx?
1023 #= s/^\tmovl (.*),\%ecx\n\tjmp \*%ecx\n/\tmovl $1,\%eax\n\tjmp \*\%eax\n/g;
1024 #= s/^\tjmp \*(-?\d*)\((.*\%ecx.*)\)\n/\tmovl $2,\%eax\n\tjmp \*$1\(\%eax\)\n/g;
1025 #= s/^\tjmp \*\%ecx\n/\tmovl \%ecx,\%eax\n\tjmp \*\%eax\n/g;
1026 #= die "$Pgm: (mangler) still have jump involving \%ecx!\n$_"
1027 #= if /(jmp|call) .*\%ecx/;
1030 # OK, now we can decide what our patch-up code is going to
1032 if ( $StolenX86Regs <= 2
1033 && ( /32\(\%ebx\)/ || /\%esi/ || /^\tcmps/ ) ) { # R1 (esi)
1034 $entry_patch .= "\tmovl \%esi,32(\%ebx)\n";
1035 $exit_patch .= "\tmovl 32(\%ebx),\%esi\n";
1036 # nothing for call_{entry,exit} because %esi is callee-save
1038 if ( $StolenX86Regs <= 3
1039 && ( /64\(\%ebx\)/ || /\%edi/ || /^\t(scas|cmps)/ ) ) { # SpA (edi)
1040 $entry_patch .= "\tmovl \%edi,64(\%ebx)\n";
1041 $exit_patch .= "\tmovl 64(\%ebx),\%edi\n";
1042 # nothing for call_{entry,exit} because %edi is callee-save
1044 #= if ( $StolenX86Regs <= 4
1045 #= && ( /80\(\%ebx\)/ || /\%ecx/ || /^\t(rep|loop)/ ) ) { # Hp (ecx)
1046 #= $entry_patch .= "\tmovl \%ecx,80(\%ebx)\n";
1047 #= $exit_patch .= "\tmovl 80(\%ebx),\%ecx\n";
1049 #= $call_exit_patch .= "\tmovl \%ecx,108(\%ebx)\n";
1050 #= $call_entry_patch .= "\tmovl 108(\%ebx),\%ecx\n";
1051 #= # I have a really bad feeling about this if we ever
1052 #= # have a nested call...
1053 #= # NB: should just hide it somewhere in the C stack.
1055 # --------------------------------------------------------
1056 # next, here we go with non-%esp patching!
1058 s/^(\t[a-z])/$entry_patch$1/; # before first instruction
1059 s/^(\tcall .*\n(\taddl \$\d+,\%esp\n)?)/$call_exit_patch$1$call_entry_patch/g; # _all_ calls
1061 # fix _all_ non-local jumps:
1063 s/^\tjmp \*${T_X86_PRE_LLBL_PAT}/\tJMP___SL/go;
1064 s/^\tjmp ${T_X86_PRE_LLBL_PAT}/\tJMP___L/go;
1066 s/^(\tjmp .*\n)/$exit_patch$1/g; # here's the fix...
1068 s/^\tJMP___SL/\tjmp \*${T_X86_PRE_LLBL}/go;
1069 s/^\tJMP___L/\tjmp ${T_X86_PRE_LLBL}/go;
1071 # fix post-PerformGC wrapper (re-)entries ???
1073 if ($StolenX86Regs == 2 ) {
1074 die "ARGH! Jump uses \%esi or \%edi with -monly-2-regs:\n$_"
1075 if /^\t(jmp|call) .*\%e(si|di)/;
1076 #= die "ARGH! Jump uses \%esi, \%edi, or \%ecx with -monly-2-regs:\n$_"
1077 #= if /^\t(jmp|call) .*\%e(si|di|cx)/;
1078 } elsif ($StolenX86Regs == 3 ) {
1079 die "ARGH! Jump uses \%edi with -monly-3-regs:\n$_"
1080 if /^\t(jmp|call) .*\%edi/;
1081 #= die "ARGH! Jump uses \%edi or \%ecx with -monly-3-regs:\n$_"
1082 #= if /^\t(jmp|call) .*\%e(di|cx)/;
1083 #= } elsif ($StolenX86Regs == 4 ) {
1084 #= die "ARGH! Jump uses \%ecx with -monly-4-regs:\n$_"
1085 #= if /^\t(jmp|call) .*\%ecx/;
1088 # final peephole fixes
1090 s/^\tmovl \%eax,36\(\%ebx\)\n\tjmp \*36\(\%ebx\)\n/\tmovl \%eax,36\(\%ebx\)\n\tjmp \*\%eax\n/;
1091 s/^\tmovl \$_(.*),(\%e[abcd]x)\n\tjmp \*$2/\tjmp _$1/g;
1093 # Hacks to eliminate some reloads of Hp. Worth about 5% code size.
1094 # We could do much better than this, but at least it catches about
1095 # half of the unnecessary reloads.
1096 # Note that these will stop working if either:
1097 # (i) the offset of Hp from BaseReg changes from 80, or
1098 # (ii) the register assignment of BaseReg changes from %ebx
1100 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;
1102 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;
1104 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;
1105 s/^\tmovl 80\(\%ebx\),\%eax((\n\t(movl|addl) .*,((-?[0-9]*\(.*)|(\%e[bcd]x)))+)\n\tmovl 80\(\%ebx\),\%eax/\tmovl 80\(\%ebx\),\%eax$1/g;
1107 # --------------------------------------------------------
1108 # that's it -- print it
1110 #die "Funny jumps?\n$_" if /${T_X86_BADJMP}/o; # paranoia
1114 if ( $need_fallthru_patch ) { # exit patch for end of slow entry code
1115 print OUTASM $exit_patch;
1116 # ToDo: make it not print if there is a "jmp" at the end
1122 sub init_FUNNY_THINGS {
1123 %KNOWN_FUNNY_THING = (
1124 "${T_US}CheckHeapCode${T_POST_LBL}", 1,
1125 "${T_US}CommonUnderflow${T_POST_LBL}", 1,
1126 "${T_US}Continue${T_POST_LBL}", 1,
1127 "${T_US}EnterNodeCode${T_POST_LBL}", 1,
1128 "${T_US}ErrorIO_call_count${T_POST_LBL}", 1,
1129 "${T_US}ErrorIO_innards${T_POST_LBL}", 1,
1130 "${T_US}IndUpdRetDir${T_POST_LBL}", 1,
1131 "${T_US}IndUpdRetV0${T_POST_LBL}", 1,
1132 "${T_US}IndUpdRetV1${T_POST_LBL}", 1,
1133 "${T_US}IndUpdRetV2${T_POST_LBL}", 1,
1134 "${T_US}IndUpdRetV3${T_POST_LBL}", 1,
1135 "${T_US}IndUpdRetV4${T_POST_LBL}", 1,
1136 "${T_US}IndUpdRetV5${T_POST_LBL}", 1,
1137 "${T_US}IndUpdRetV6${T_POST_LBL}", 1,
1138 "${T_US}IndUpdRetV7${T_POST_LBL}", 1,
1139 "${T_US}PrimUnderflow${T_POST_LBL}", 1,
1140 "${T_US}StackUnderflowEnterNode${T_POST_LBL}", 1,
1141 "${T_US}StdErrorCode${T_POST_LBL}", 1,
1142 "${T_US}UnderflowVect0${T_POST_LBL}", 1,
1143 "${T_US}UnderflowVect1${T_POST_LBL}", 1,
1144 "${T_US}UnderflowVect2${T_POST_LBL}", 1,
1145 "${T_US}UnderflowVect3${T_POST_LBL}", 1,
1146 "${T_US}UnderflowVect4${T_POST_LBL}", 1,
1147 "${T_US}UnderflowVect5${T_POST_LBL}", 1,
1148 "${T_US}UnderflowVect6${T_POST_LBL}", 1,
1149 "${T_US}UnderflowVect7${T_POST_LBL}", 1,
1150 "${T_US}UpdErr${T_POST_LBL}", 1,
1151 "${T_US}UpdatePAP${T_POST_LBL}", 1,
1152 "${T_US}WorldStateToken${T_POST_LBL}", 1,
1153 "${T_US}_Enter_Internal${T_POST_LBL}", 1,
1154 "${T_US}_PRMarking_MarkNextAStack${T_POST_LBL}", 1,
1155 "${T_US}_PRMarking_MarkNextBStack${T_POST_LBL}", 1,
1156 "${T_US}_PRMarking_MarkNextCAF${T_POST_LBL}", 1,
1157 "${T_US}_PRMarking_MarkNextGA${T_POST_LBL}", 1,
1158 "${T_US}_PRMarking_MarkNextRoot${T_POST_LBL}", 1,
1159 "${T_US}_PRMarking_MarkNextSpark${T_POST_LBL}", 1,
1160 "${T_US}_Scavenge_Forward_Ref${T_POST_LBL}", 1,
1161 "${T_US}__std_entry_error__${T_POST_LBL}", 1,
1162 "${T_US}_startMarkWorld${T_POST_LBL}", 1,
1163 "${T_US}resumeThread${T_POST_LBL}", 1,
1164 "${T_US}startCcRegisteringWorld${T_POST_LBL}", 1,
1165 "${T_US}startEnterFloat${T_POST_LBL}", 1,
1166 "${T_US}startEnterInt${T_POST_LBL}", 1,
1167 "${T_US}startPerformIO${T_POST_LBL}", 1,
1168 "${T_US}startStgWorld${T_POST_LBL}", 1,
1169 "${T_US}stopPerformIO${T_POST_LBL}", 1
1174 The following table reversal is used for both info tables and return
1175 vectors. In both cases, we remove the first entry from the table,
1176 reverse the table, put the label at the end, and paste some code
1177 (that which is normally referred to by the first entry in the table)
1178 right after the table itself. (The code pasting is done elsewhere.)
1182 local($symb, $tbl, $discard1) = @_;
1184 local($before) = '';
1186 local(@imports) = (); # hppa only
1189 local(@lines) = split(/\n/, $tbl);
1190 local($i, $extra, $words_to_pad, $j);
1192 for ($i = 0; $i <= $#lines && $lines[$i] !~ /^\t${T_DOT_WORD}\s+/o; $i++) {
1193 $label .= $lines[$i] . "\n",
1194 next if $lines[$i] =~ /^[A-Za-z0-9_]+_info${T_POST_LBL}$/o
1195 || $lines[$i] =~ /^${T_DOT_GLOBAL}/o
1196 || $lines[$i] =~ /^${T_US}vtbl_\S+${T_POST_LBL}$/o;
1198 $before .= $lines[$i] . "\n"; # otherwise...
1201 if ( $TargetPlatform !~ /^hppa/ ) {
1202 for ( ; $i <= $#lines && $lines[$i] =~ /^\t${T_DOT_WORD}\s+/o; $i++) {
1203 push(@words, $lines[$i]);
1205 } else { # hppa weirdness
1206 for ( ; $i <= $#lines && $lines[$i] =~ /^\s+\.(word|IMPORT)/; $i++) {
1207 if ($lines[$i] =~ /^\s+\.IMPORT/) {
1208 push(@imports, $lines[$i]);
1210 # We don't use HP's ``function pointers''
1211 # We just use labels in code space, like normal people
1212 $lines[$i] =~ s/P%//;
1213 push(@words, $lines[$i]);
1218 # now throw away the first word (entry code):
1219 shift(@words) if $discard1;
1221 # Padding removed to reduce code size and improve performance on Pentiums.
1223 # for 486-cache-friendliness, we want our tables aligned
1224 # on 16-byte boundaries (.align 4). Let's pad:
1225 # $extra = ($#words + 1) % 4;
1226 # $words_to_pad = ($extra == 0) ? 0 : 4 - $extra;
1227 # for ($j = 0; $j < $words_to_pad; $j++) { push(@words, "\t${T_DOT_WORD} 0"); }
1229 for (; $i <= $#lines; $i++) {
1230 $after .= $lines[$i] . "\n";
1233 # Alphas:If we have anonymous text (not part of a procedure), the
1234 # linker may complain about missing exception information. Bleh.
1235 if ( $TargetPlatform =~ /^alpha-/ && $label =~ /^([A-Za-z0-9_]+):$/) {
1236 $before = "\t.ent $1\n" . $before;
1237 $after .= "\t.end $1\n";
1241 . (($TargetPlatform !~ /^hppa/) ? '' : join("\n", @imports) . "\n")
1242 . join("\n", (reverse @words)) . "\n"
1245 # print STDERR "before=$before\n";
1246 # print STDERR "label=$label\n";
1247 # print STDERR "words=",(reverse @words),"\n";
1248 # print STDERR "after=$after\n";
1255 sub mini_mangle_asm_i386 {
1256 local($in_asmf, $out_asmf) = @_;
1258 &init_TARGET_STUFF();
1260 open(INASM, "< $in_asmf")
1261 || &tidy_up_and_die(1,"$Pgm: failed to open `$in_asmf' (to read)\n");
1262 open(OUTASM,"> $out_asmf")
1263 || &tidy_up_and_die(1,"$Pgm: failed to open `$out_asmf' (to write)\n");
1269 /^${T_US}(PerformGC|StackOverflow|Yield|PerformReschedule)_wrapper${T_POST_LBL}\n/o;
1270 print OUTASM "\tmovl \%esp, ${T_US}__temp_esp\n";
1271 print OUTASM "\tmovl \%eax, ${T_US}__temp_eax\n";
1275 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1276 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1280 The HP is a major nuisance. The threaded code mangler moved info
1281 tables from data space to code space, but unthreaded code in the RTS
1282 still has references to info tables in data space. Since the HP
1283 linker is very precise about where symbols live, we need to patch the
1284 references in the unthreaded RTS as well.
1287 sub mini_mangle_asm_hppa {
1288 local($in_asmf, $out_asmf) = @_;
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");
1296 s/_info,DATA/_info,CODE/; # Move _info references to code space
1302 close(OUTASM) || &tidy_up_and_die(1,"Failed writing to $out_asmf\n");
1303 close(INASM) || &tidy_up_and_die(1,"Failed reading from $in_asmf\n");
1306 # make "require"r happy...