1 -----------------------------------------------------------------------------
3 -- Pretty-printing assembly language
5 -- (c) The University of Glasgow 1993-2005
7 -----------------------------------------------------------------------------
9 -- We start with the @pprXXX@s with some cross-platform commonality
10 -- (e.g., 'pprReg'); we conclude with the no-commonality monster,
14 -- The above warning supression flag is a temporary kludge.
15 -- While working on this module you are encouraged to remove it and fix
16 -- any warnings in the module. See
17 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
20 #include "nativeGen/NCG.h"
23 pprNatCmmTop, pprBasicBlock, pprSectionHeader, pprData,
24 pprInstr, pprSize, pprUserReg
28 #include "HsVersions.h"
31 import MachOp ( MachRep(..), wordRep, isFloatingRep )
32 import MachRegs -- may differ per-platform
35 import CLabel ( CLabel, pprCLabel, externallyVisibleCLabel,
36 labelDynamic, mkAsmTempLabel, entryLblToInfoLbl )
37 #if HAVE_SUBSECTIONS_VIA_SYMBOLS
38 import CLabel ( mkDeadStripPreventer )
41 import Panic ( panic )
42 import Unique ( pprUnique )
45 import qualified Outputable
46 import Outputable ( Outputable )
49 import Data.Word ( Word8 )
50 import Control.Monad.ST
51 import Data.Char ( chr, ord )
52 import Data.Maybe ( isJust )
54 #if powerpc_TARGET_ARCH || darwin_TARGET_OS
55 import Data.Word(Word32)
59 -- -----------------------------------------------------------------------------
60 -- Printing this stuff out
62 asmSDoc d = Outputable.withPprStyleDoc (
63 Outputable.mkCodeStyle Outputable.AsmStyle) d
64 pprCLabel_asm l = asmSDoc (pprCLabel l)
66 pprNatCmmTop :: NatCmmTop -> Doc
67 pprNatCmmTop (CmmData section dats) =
68 pprSectionHeader section $$ vcat (map pprData dats)
70 -- special case for split markers:
71 pprNatCmmTop (CmmProc [] lbl _ (ListGraph [])) = pprLabel lbl
73 pprNatCmmTop (CmmProc info lbl params (ListGraph blocks)) =
74 pprSectionHeader Text $$
75 (if null info then -- blocks guaranteed not null, so label needed
78 #if HAVE_SUBSECTIONS_VIA_SYMBOLS
79 pprCLabel_asm (mkDeadStripPreventer $ entryLblToInfoLbl lbl)
82 vcat (map pprData info) $$
83 pprLabel (entryLblToInfoLbl lbl)
85 vcat (map pprBasicBlock blocks)
86 -- ^ Even the first block gets a label, because with branch-chain
87 -- elimination, it might be the target of a goto.
88 #if HAVE_SUBSECTIONS_VIA_SYMBOLS
89 -- If we are using the .subsections_via_symbols directive
90 -- (available on recent versions of Darwin),
91 -- we have to make sure that there is some kind of reference
92 -- from the entry code to a label on the _top_ of of the info table,
93 -- so that the linker will not think it is unreferenced and dead-strip
94 -- it. That's why the label is called a DeadStripPreventer (_dsp).
97 <+> pprCLabel_asm (entryLblToInfoLbl lbl)
99 <+> pprCLabel_asm (mkDeadStripPreventer $ entryLblToInfoLbl lbl)
104 pprBasicBlock :: NatBasicBlock -> Doc
105 pprBasicBlock (BasicBlock (BlockId id) instrs) =
106 pprLabel (mkAsmTempLabel id) $$
107 vcat (map pprInstr instrs)
109 -- -----------------------------------------------------------------------------
110 -- pprReg: print a 'Reg'
112 -- For x86, the way we print a register name depends
113 -- on which bit of it we care about. Yurgh.
115 pprUserReg :: Reg -> Doc
116 pprUserReg = pprReg IF_ARCH_i386(I32,) IF_ARCH_x86_64(I64,)
118 pprReg :: IF_ARCH_i386(MachRep ->,) IF_ARCH_x86_64(MachRep ->,) Reg -> Doc
120 pprReg IF_ARCH_i386(s,) IF_ARCH_x86_64(s,) r
122 RealReg i -> ppr_reg_no IF_ARCH_i386(s,) IF_ARCH_x86_64(s,) i
123 VirtualRegI u -> text "%vI_" <> asmSDoc (pprUnique u)
124 VirtualRegHi u -> text "%vHi_" <> asmSDoc (pprUnique u)
125 VirtualRegF u -> text "%vF_" <> asmSDoc (pprUnique u)
126 VirtualRegD u -> text "%vD_" <> asmSDoc (pprUnique u)
128 #if alpha_TARGET_ARCH
129 ppr_reg_no :: Int -> Doc
132 0 -> SLIT("$0"); 1 -> SLIT("$1");
133 2 -> SLIT("$2"); 3 -> SLIT("$3");
134 4 -> SLIT("$4"); 5 -> SLIT("$5");
135 6 -> SLIT("$6"); 7 -> SLIT("$7");
136 8 -> SLIT("$8"); 9 -> SLIT("$9");
137 10 -> SLIT("$10"); 11 -> SLIT("$11");
138 12 -> SLIT("$12"); 13 -> SLIT("$13");
139 14 -> SLIT("$14"); 15 -> SLIT("$15");
140 16 -> SLIT("$16"); 17 -> SLIT("$17");
141 18 -> SLIT("$18"); 19 -> SLIT("$19");
142 20 -> SLIT("$20"); 21 -> SLIT("$21");
143 22 -> SLIT("$22"); 23 -> SLIT("$23");
144 24 -> SLIT("$24"); 25 -> SLIT("$25");
145 26 -> SLIT("$26"); 27 -> SLIT("$27");
146 28 -> SLIT("$28"); 29 -> SLIT("$29");
147 30 -> SLIT("$30"); 31 -> SLIT("$31");
148 32 -> SLIT("$f0"); 33 -> SLIT("$f1");
149 34 -> SLIT("$f2"); 35 -> SLIT("$f3");
150 36 -> SLIT("$f4"); 37 -> SLIT("$f5");
151 38 -> SLIT("$f6"); 39 -> SLIT("$f7");
152 40 -> SLIT("$f8"); 41 -> SLIT("$f9");
153 42 -> SLIT("$f10"); 43 -> SLIT("$f11");
154 44 -> SLIT("$f12"); 45 -> SLIT("$f13");
155 46 -> SLIT("$f14"); 47 -> SLIT("$f15");
156 48 -> SLIT("$f16"); 49 -> SLIT("$f17");
157 50 -> SLIT("$f18"); 51 -> SLIT("$f19");
158 52 -> SLIT("$f20"); 53 -> SLIT("$f21");
159 54 -> SLIT("$f22"); 55 -> SLIT("$f23");
160 56 -> SLIT("$f24"); 57 -> SLIT("$f25");
161 58 -> SLIT("$f26"); 59 -> SLIT("$f27");
162 60 -> SLIT("$f28"); 61 -> SLIT("$f29");
163 62 -> SLIT("$f30"); 63 -> SLIT("$f31");
164 _ -> SLIT("very naughty alpha register")
168 ppr_reg_no :: MachRep -> Int -> Doc
169 ppr_reg_no I8 = ppr_reg_byte
170 ppr_reg_no I16 = ppr_reg_word
171 ppr_reg_no _ = ppr_reg_long
173 ppr_reg_byte i = ptext
175 0 -> SLIT("%al"); 1 -> SLIT("%bl");
176 2 -> SLIT("%cl"); 3 -> SLIT("%dl");
177 _ -> SLIT("very naughty I386 byte register")
180 ppr_reg_word i = ptext
182 0 -> SLIT("%ax"); 1 -> SLIT("%bx");
183 2 -> SLIT("%cx"); 3 -> SLIT("%dx");
184 4 -> SLIT("%si"); 5 -> SLIT("%di");
185 6 -> SLIT("%bp"); 7 -> SLIT("%sp");
186 _ -> SLIT("very naughty I386 word register")
189 ppr_reg_long i = ptext
191 0 -> SLIT("%eax"); 1 -> SLIT("%ebx");
192 2 -> SLIT("%ecx"); 3 -> SLIT("%edx");
193 4 -> SLIT("%esi"); 5 -> SLIT("%edi");
194 6 -> SLIT("%ebp"); 7 -> SLIT("%esp");
195 8 -> SLIT("%fake0"); 9 -> SLIT("%fake1");
196 10 -> SLIT("%fake2"); 11 -> SLIT("%fake3");
197 12 -> SLIT("%fake4"); 13 -> SLIT("%fake5");
198 _ -> SLIT("very naughty I386 register")
202 #if x86_64_TARGET_ARCH
203 ppr_reg_no :: MachRep -> Int -> Doc
204 ppr_reg_no I8 = ppr_reg_byte
205 ppr_reg_no I16 = ppr_reg_word
206 ppr_reg_no I32 = ppr_reg_long
207 ppr_reg_no _ = ppr_reg_quad
209 ppr_reg_byte i = ptext
211 0 -> SLIT("%al"); 1 -> SLIT("%bl");
212 2 -> SLIT("%cl"); 3 -> SLIT("%dl");
213 4 -> SLIT("%sil"); 5 -> SLIT("%dil"); -- new 8-bit regs!
214 6 -> SLIT("%bpl"); 7 -> SLIT("%spl");
215 8 -> SLIT("%r8b"); 9 -> SLIT("%r9b");
216 10 -> SLIT("%r10b"); 11 -> SLIT("%r11b");
217 12 -> SLIT("%r12b"); 13 -> SLIT("%r13b");
218 14 -> SLIT("%r14b"); 15 -> SLIT("%r15b");
219 _ -> SLIT("very naughty x86_64 byte register")
222 ppr_reg_word i = ptext
224 0 -> SLIT("%ax"); 1 -> SLIT("%bx");
225 2 -> SLIT("%cx"); 3 -> SLIT("%dx");
226 4 -> SLIT("%si"); 5 -> SLIT("%di");
227 6 -> SLIT("%bp"); 7 -> SLIT("%sp");
228 8 -> SLIT("%r8w"); 9 -> SLIT("%r9w");
229 10 -> SLIT("%r10w"); 11 -> SLIT("%r11w");
230 12 -> SLIT("%r12w"); 13 -> SLIT("%r13w");
231 14 -> SLIT("%r14w"); 15 -> SLIT("%r15w");
232 _ -> SLIT("very naughty x86_64 word register")
235 ppr_reg_long i = ptext
237 0 -> SLIT("%eax"); 1 -> SLIT("%ebx");
238 2 -> SLIT("%ecx"); 3 -> SLIT("%edx");
239 4 -> SLIT("%esi"); 5 -> SLIT("%edi");
240 6 -> SLIT("%ebp"); 7 -> SLIT("%esp");
241 8 -> SLIT("%r8d"); 9 -> SLIT("%r9d");
242 10 -> SLIT("%r10d"); 11 -> SLIT("%r11d");
243 12 -> SLIT("%r12d"); 13 -> SLIT("%r13d");
244 14 -> SLIT("%r14d"); 15 -> SLIT("%r15d");
245 _ -> SLIT("very naughty x86_64 register")
248 ppr_reg_quad i = ptext
250 0 -> SLIT("%rax"); 1 -> SLIT("%rbx");
251 2 -> SLIT("%rcx"); 3 -> SLIT("%rdx");
252 4 -> SLIT("%rsi"); 5 -> SLIT("%rdi");
253 6 -> SLIT("%rbp"); 7 -> SLIT("%rsp");
254 8 -> SLIT("%r8"); 9 -> SLIT("%r9");
255 10 -> SLIT("%r10"); 11 -> SLIT("%r11");
256 12 -> SLIT("%r12"); 13 -> SLIT("%r13");
257 14 -> SLIT("%r14"); 15 -> SLIT("%r15");
258 16 -> SLIT("%xmm0"); 17 -> SLIT("%xmm1");
259 18 -> SLIT("%xmm2"); 19 -> SLIT("%xmm3");
260 20 -> SLIT("%xmm4"); 21 -> SLIT("%xmm5");
261 22 -> SLIT("%xmm6"); 23 -> SLIT("%xmm7");
262 24 -> SLIT("%xmm8"); 25 -> SLIT("%xmm9");
263 26 -> SLIT("%xmm10"); 27 -> SLIT("%xmm11");
264 28 -> SLIT("%xmm12"); 29 -> SLIT("%xmm13");
265 30 -> SLIT("%xmm14"); 31 -> SLIT("%xmm15");
266 _ -> SLIT("very naughty x86_64 register")
270 #if sparc_TARGET_ARCH
271 ppr_reg_no :: Int -> Doc
274 0 -> SLIT("%g0"); 1 -> SLIT("%g1");
275 2 -> SLIT("%g2"); 3 -> SLIT("%g3");
276 4 -> SLIT("%g4"); 5 -> SLIT("%g5");
277 6 -> SLIT("%g6"); 7 -> SLIT("%g7");
278 8 -> SLIT("%o0"); 9 -> SLIT("%o1");
279 10 -> SLIT("%o2"); 11 -> SLIT("%o3");
280 12 -> SLIT("%o4"); 13 -> SLIT("%o5");
281 14 -> SLIT("%o6"); 15 -> SLIT("%o7");
282 16 -> SLIT("%l0"); 17 -> SLIT("%l1");
283 18 -> SLIT("%l2"); 19 -> SLIT("%l3");
284 20 -> SLIT("%l4"); 21 -> SLIT("%l5");
285 22 -> SLIT("%l6"); 23 -> SLIT("%l7");
286 24 -> SLIT("%i0"); 25 -> SLIT("%i1");
287 26 -> SLIT("%i2"); 27 -> SLIT("%i3");
288 28 -> SLIT("%i4"); 29 -> SLIT("%i5");
289 30 -> SLIT("%i6"); 31 -> SLIT("%i7");
290 32 -> SLIT("%f0"); 33 -> SLIT("%f1");
291 34 -> SLIT("%f2"); 35 -> SLIT("%f3");
292 36 -> SLIT("%f4"); 37 -> SLIT("%f5");
293 38 -> SLIT("%f6"); 39 -> SLIT("%f7");
294 40 -> SLIT("%f8"); 41 -> SLIT("%f9");
295 42 -> SLIT("%f10"); 43 -> SLIT("%f11");
296 44 -> SLIT("%f12"); 45 -> SLIT("%f13");
297 46 -> SLIT("%f14"); 47 -> SLIT("%f15");
298 48 -> SLIT("%f16"); 49 -> SLIT("%f17");
299 50 -> SLIT("%f18"); 51 -> SLIT("%f19");
300 52 -> SLIT("%f20"); 53 -> SLIT("%f21");
301 54 -> SLIT("%f22"); 55 -> SLIT("%f23");
302 56 -> SLIT("%f24"); 57 -> SLIT("%f25");
303 58 -> SLIT("%f26"); 59 -> SLIT("%f27");
304 60 -> SLIT("%f28"); 61 -> SLIT("%f29");
305 62 -> SLIT("%f30"); 63 -> SLIT("%f31");
306 _ -> SLIT("very naughty sparc register")
309 #if powerpc_TARGET_ARCH
311 ppr_reg_no :: Int -> Doc
314 0 -> SLIT("r0"); 1 -> SLIT("r1");
315 2 -> SLIT("r2"); 3 -> SLIT("r3");
316 4 -> SLIT("r4"); 5 -> SLIT("r5");
317 6 -> SLIT("r6"); 7 -> SLIT("r7");
318 8 -> SLIT("r8"); 9 -> SLIT("r9");
319 10 -> SLIT("r10"); 11 -> SLIT("r11");
320 12 -> SLIT("r12"); 13 -> SLIT("r13");
321 14 -> SLIT("r14"); 15 -> SLIT("r15");
322 16 -> SLIT("r16"); 17 -> SLIT("r17");
323 18 -> SLIT("r18"); 19 -> SLIT("r19");
324 20 -> SLIT("r20"); 21 -> SLIT("r21");
325 22 -> SLIT("r22"); 23 -> SLIT("r23");
326 24 -> SLIT("r24"); 25 -> SLIT("r25");
327 26 -> SLIT("r26"); 27 -> SLIT("r27");
328 28 -> SLIT("r28"); 29 -> SLIT("r29");
329 30 -> SLIT("r30"); 31 -> SLIT("r31");
330 32 -> SLIT("f0"); 33 -> SLIT("f1");
331 34 -> SLIT("f2"); 35 -> SLIT("f3");
332 36 -> SLIT("f4"); 37 -> SLIT("f5");
333 38 -> SLIT("f6"); 39 -> SLIT("f7");
334 40 -> SLIT("f8"); 41 -> SLIT("f9");
335 42 -> SLIT("f10"); 43 -> SLIT("f11");
336 44 -> SLIT("f12"); 45 -> SLIT("f13");
337 46 -> SLIT("f14"); 47 -> SLIT("f15");
338 48 -> SLIT("f16"); 49 -> SLIT("f17");
339 50 -> SLIT("f18"); 51 -> SLIT("f19");
340 52 -> SLIT("f20"); 53 -> SLIT("f21");
341 54 -> SLIT("f22"); 55 -> SLIT("f23");
342 56 -> SLIT("f24"); 57 -> SLIT("f25");
343 58 -> SLIT("f26"); 59 -> SLIT("f27");
344 60 -> SLIT("f28"); 61 -> SLIT("f29");
345 62 -> SLIT("f30"); 63 -> SLIT("f31");
346 _ -> SLIT("very naughty powerpc register")
349 ppr_reg_no :: Int -> Doc
350 ppr_reg_no i | i <= 31 = int i -- GPRs
351 | i <= 63 = int (i-32) -- FPRs
352 | otherwise = ptext SLIT("very naughty powerpc register")
357 -- -----------------------------------------------------------------------------
358 -- pprSize: print a 'Size'
360 #if powerpc_TARGET_ARCH || i386_TARGET_ARCH || x86_64_TARGET_ARCH || sparc_TARGET_ARCH
361 pprSize :: MachRep -> Doc
363 pprSize :: Size -> Doc
366 pprSize x = ptext (case x of
367 #if alpha_TARGET_ARCH
370 -- W -> SLIT("w") UNUSED
371 -- Wu -> SLIT("wu") UNUSED
374 -- FF -> SLIT("f") UNUSED
375 -- DF -> SLIT("d") UNUSED
376 -- GF -> SLIT("g") UNUSED
377 -- SF -> SLIT("s") UNUSED
380 #if i386_TARGET_ARCH || x86_64_TARGET_ARCH
391 #if x86_64_TARGET_ARCH
392 F32 -> SLIT("ss") -- "scalar single-precision float" (SSE2)
393 F64 -> SLIT("sd") -- "scalar double-precision float" (SSE2)
395 #if sparc_TARGET_ARCH
402 pprStSize :: MachRep -> Doc
403 pprStSize x = ptext (case x of
410 #if powerpc_TARGET_ARCH
419 -- -----------------------------------------------------------------------------
420 -- pprCond: print a 'Cond'
422 pprCond :: Cond -> Doc
424 pprCond c = ptext (case c of {
425 #if alpha_TARGET_ARCH
435 #if i386_TARGET_ARCH || x86_64_TARGET_ARCH
436 GEU -> SLIT("ae"); LU -> SLIT("b");
437 EQQ -> SLIT("e"); GTT -> SLIT("g");
438 GE -> SLIT("ge"); GU -> SLIT("a");
439 LTT -> SLIT("l"); LE -> SLIT("le");
440 LEU -> SLIT("be"); NE -> SLIT("ne");
441 NEG -> SLIT("s"); POS -> SLIT("ns");
442 CARRY -> SLIT("c"); OFLO -> SLIT("o");
443 PARITY -> SLIT("p"); NOTPARITY -> SLIT("np");
444 ALWAYS -> SLIT("mp") -- hack
446 #if sparc_TARGET_ARCH
447 ALWAYS -> SLIT(""); NEVER -> SLIT("n");
448 GEU -> SLIT("geu"); LU -> SLIT("lu");
449 EQQ -> SLIT("e"); GTT -> SLIT("g");
450 GE -> SLIT("ge"); GU -> SLIT("gu");
451 LTT -> SLIT("l"); LE -> SLIT("le");
452 LEU -> SLIT("leu"); NE -> SLIT("ne");
453 NEG -> SLIT("neg"); POS -> SLIT("pos");
454 VC -> SLIT("vc"); VS -> SLIT("vs")
456 #if powerpc_TARGET_ARCH
458 EQQ -> SLIT("eq"); NE -> SLIT("ne");
459 LTT -> SLIT("lt"); GE -> SLIT("ge");
460 GTT -> SLIT("gt"); LE -> SLIT("le");
461 LU -> SLIT("lt"); GEU -> SLIT("ge");
462 GU -> SLIT("gt"); LEU -> SLIT("le");
467 -- -----------------------------------------------------------------------------
468 -- pprImm: print an 'Imm'
472 pprImm (ImmInt i) = int i
473 pprImm (ImmInteger i) = integer i
474 pprImm (ImmCLbl l) = pprCLabel_asm l
475 pprImm (ImmIndex l i) = pprCLabel_asm l <> char '+' <> int i
476 pprImm (ImmLit s) = s
478 pprImm (ImmFloat _) = ptext SLIT("naughty float immediate")
479 pprImm (ImmDouble _) = ptext SLIT("naughty double immediate")
481 pprImm (ImmConstantSum a b) = pprImm a <> char '+' <> pprImm b
482 #if sparc_TARGET_ARCH
483 -- ToDo: This should really be fixed in the PIC support, but only
485 pprImm (ImmConstantDiff a b) = pprImm a
487 pprImm (ImmConstantDiff a b) = pprImm a <> char '-'
488 <> lparen <> pprImm b <> rparen
491 #if sparc_TARGET_ARCH
493 = hcat [ pp_lo, pprImm i, rparen ]
498 = hcat [ pp_hi, pprImm i, rparen ]
502 #if powerpc_TARGET_ARCH
505 = hcat [ pp_lo, pprImm i, rparen ]
510 = hcat [ pp_hi, pprImm i, rparen ]
515 = hcat [ pp_ha, pprImm i, rparen ]
521 = pprImm i <> text "@l"
524 = pprImm i <> text "@h"
527 = pprImm i <> text "@ha"
532 -- -----------------------------------------------------------------------------
533 -- @pprAddr: print an 'AddrMode'
535 pprAddr :: AddrMode -> Doc
537 #if alpha_TARGET_ARCH
538 pprAddr (AddrReg r) = parens (pprReg r)
539 pprAddr (AddrImm i) = pprImm i
540 pprAddr (AddrRegImm r1 i)
541 = (<>) (pprImm i) (parens (pprReg r1))
546 #if i386_TARGET_ARCH || x86_64_TARGET_ARCH
547 pprAddr (ImmAddr imm off)
548 = let pp_imm = pprImm imm
552 else if (off < 0) then
555 pp_imm <> char '+' <> int off
557 pprAddr (AddrBaseIndex base index displacement)
559 pp_disp = ppr_disp displacement
560 pp_off p = pp_disp <> char '(' <> p <> char ')'
561 pp_reg r = pprReg wordRep r
564 (EABaseNone, EAIndexNone) -> pp_disp
565 (EABaseReg b, EAIndexNone) -> pp_off (pp_reg b)
566 (EABaseRip, EAIndexNone) -> pp_off (ptext SLIT("%rip"))
567 (EABaseNone, EAIndex r i) -> pp_off (comma <> pp_reg r <> comma <> int i)
568 (EABaseReg b, EAIndex r i) -> pp_off (pp_reg b <> comma <> pp_reg r
571 ppr_disp (ImmInt 0) = empty
572 ppr_disp imm = pprImm imm
577 #if sparc_TARGET_ARCH
578 pprAddr (AddrRegReg r1 (RealReg 0)) = pprReg r1
580 pprAddr (AddrRegReg r1 r2)
581 = hcat [ pprReg r1, char '+', pprReg r2 ]
583 pprAddr (AddrRegImm r1 (ImmInt i))
585 | not (fits13Bits i) = largeOffsetError i
586 | otherwise = hcat [ pprReg r1, pp_sign, int i ]
588 pp_sign = if i > 0 then char '+' else empty
590 pprAddr (AddrRegImm r1 (ImmInteger i))
592 | not (fits13Bits i) = largeOffsetError i
593 | otherwise = hcat [ pprReg r1, pp_sign, integer i ]
595 pp_sign = if i > 0 then char '+' else empty
597 pprAddr (AddrRegImm r1 imm)
598 = hcat [ pprReg r1, char '+', pprImm imm ]
603 #if powerpc_TARGET_ARCH
604 pprAddr (AddrRegReg r1 r2)
605 = pprReg r1 <+> ptext SLIT(", ") <+> pprReg r2
607 pprAddr (AddrRegImm r1 (ImmInt i)) = hcat [ int i, char '(', pprReg r1, char ')' ]
608 pprAddr (AddrRegImm r1 (ImmInteger i)) = hcat [ integer i, char '(', pprReg r1, char ')' ]
609 pprAddr (AddrRegImm r1 imm) = hcat [ pprImm imm, char '(', pprReg r1, char ')' ]
613 -- -----------------------------------------------------------------------------
614 -- pprData: print a 'CmmStatic'
616 pprSectionHeader Text
618 IF_ARCH_alpha(SLIT("\t.text\n\t.align 3") {-word boundary-}
619 ,IF_ARCH_sparc(SLIT(".text\n\t.align 4") {-word boundary-}
620 ,IF_ARCH_i386(IF_OS_darwin(SLIT(".text\n\t.align 2"),
621 SLIT(".text\n\t.align 4,0x90"))
622 {-needs per-OS variation!-}
623 ,IF_ARCH_x86_64(IF_OS_darwin(SLIT(".text\n.align 3"),
624 SLIT(".text\n\t.align 8"))
625 ,IF_ARCH_powerpc(SLIT(".text\n.align 2")
627 pprSectionHeader Data
629 IF_ARCH_alpha(SLIT("\t.data\n\t.align 3")
630 ,IF_ARCH_sparc(SLIT(".data\n\t.align 8") {-<8 will break double constants -}
631 ,IF_ARCH_i386(IF_OS_darwin(SLIT(".data\n\t.align 2"),
632 SLIT(".data\n\t.align 4"))
633 ,IF_ARCH_x86_64(IF_OS_darwin(SLIT(".data\n.align 3"),
634 SLIT(".data\n\t.align 8"))
635 ,IF_ARCH_powerpc(SLIT(".data\n.align 2")
637 pprSectionHeader ReadOnlyData
639 IF_ARCH_alpha(SLIT("\t.data\n\t.align 3")
640 ,IF_ARCH_sparc(SLIT(".data\n\t.align 8") {-<8 will break double constants -}
641 ,IF_ARCH_i386(IF_OS_darwin(SLIT(".const\n.align 2"),
642 SLIT(".section .rodata\n\t.align 4"))
643 ,IF_ARCH_x86_64(IF_OS_darwin(SLIT(".const\n.align 3"),
644 SLIT(".section .rodata\n\t.align 8"))
645 ,IF_ARCH_powerpc(IF_OS_darwin(SLIT(".const\n.align 2"),
646 SLIT(".section .rodata\n\t.align 2"))
648 pprSectionHeader RelocatableReadOnlyData
650 IF_ARCH_alpha(SLIT("\t.data\n\t.align 3")
651 ,IF_ARCH_sparc(SLIT(".data\n\t.align 8") {-<8 will break double constants -}
652 ,IF_ARCH_i386(IF_OS_darwin(SLIT(".const_data\n.align 2"),
653 SLIT(".section .data\n\t.align 4"))
654 ,IF_ARCH_x86_64(IF_OS_darwin(SLIT(".const_data\n.align 3"),
655 SLIT(".section .data\n\t.align 8"))
656 ,IF_ARCH_powerpc(IF_OS_darwin(SLIT(".const_data\n.align 2"),
657 SLIT(".data\n\t.align 2"))
659 pprSectionHeader UninitialisedData
661 IF_ARCH_alpha(SLIT("\t.bss\n\t.align 3")
662 ,IF_ARCH_sparc(SLIT(".bss\n\t.align 8") {-<8 will break double constants -}
663 ,IF_ARCH_i386(IF_OS_darwin(SLIT(".data\n\t.align 2"),
664 SLIT(".section .bss\n\t.align 4"))
665 ,IF_ARCH_x86_64(IF_OS_darwin(SLIT(".data\n\t.align 3"),
666 SLIT(".section .bss\n\t.align 8"))
667 ,IF_ARCH_powerpc(IF_OS_darwin(SLIT(".const_data\n.align 2"),
668 SLIT(".section .bss\n\t.align 2"))
670 pprSectionHeader ReadOnlyData16
672 IF_ARCH_alpha(SLIT("\t.data\n\t.align 4")
673 ,IF_ARCH_sparc(SLIT(".data\n\t.align 16")
674 ,IF_ARCH_i386(IF_OS_darwin(SLIT(".const\n.align 4"),
675 SLIT(".section .rodata\n\t.align 16"))
676 ,IF_ARCH_x86_64(IF_OS_darwin(SLIT(".const\n.align 4"),
677 SLIT(".section .rodata.cst16\n\t.align 16"))
678 ,IF_ARCH_powerpc(IF_OS_darwin(SLIT(".const\n.align 4"),
679 SLIT(".section .rodata\n\t.align 4"))
682 pprSectionHeader (OtherSection sec)
683 = panic "PprMach.pprSectionHeader: unknown section"
685 pprData :: CmmStatic -> Doc
686 pprData (CmmAlign bytes) = pprAlign bytes
687 pprData (CmmDataLabel lbl) = pprLabel lbl
688 pprData (CmmString str) = pprASCII str
689 pprData (CmmUninitialised bytes) = ptext SLIT(".space ") <> int bytes
690 pprData (CmmStaticLit lit) = pprDataItem lit
692 pprGloblDecl :: CLabel -> Doc
694 | not (externallyVisibleCLabel lbl) = empty
695 | otherwise = ptext IF_ARCH_sparc(SLIT(".global "),
699 pprTypeAndSizeDecl :: CLabel -> Doc
700 pprTypeAndSizeDecl lbl
702 | not (externallyVisibleCLabel lbl) = empty
703 | otherwise = ptext SLIT(".type ") <>
704 pprCLabel_asm lbl <> ptext SLIT(", @object")
709 pprLabel :: CLabel -> Doc
710 pprLabel lbl = pprGloblDecl lbl $$ pprTypeAndSizeDecl lbl $$ (pprCLabel_asm lbl <> char ':')
714 = vcat (map do1 str) $$ do1 0
717 do1 w = ptext SLIT("\t.byte\t") <> int (fromIntegral w)
720 IF_ARCH_alpha(ptextSLIT(".align ") <> int pow2,
721 IF_ARCH_i386(ptext SLIT(".align ") <> int IF_OS_darwin(pow2,bytes),
722 IF_ARCH_x86_64(ptext SLIT(".align ") <> int IF_OS_darwin(pow2,bytes),
723 IF_ARCH_sparc(ptext SLIT(".align ") <> int bytes,
724 IF_ARCH_powerpc(ptext SLIT(".align ") <> int pow2,)))))
728 log2 :: Int -> Int -- cache the common ones
733 log2 n = 1 + log2 (n `quot` 2)
736 pprDataItem :: CmmLit -> Doc
738 = vcat (ppr_item (cmmLitRep lit) lit)
742 -- These seem to be common:
743 ppr_item I8 x = [ptext SLIT("\t.byte\t") <> pprImm imm]
744 ppr_item I32 x = [ptext SLIT("\t.long\t") <> pprImm imm]
745 ppr_item F32 (CmmFloat r _)
746 = let bs = floatToBytes (fromRational r)
747 in map (\b -> ptext SLIT("\t.byte\t") <> pprImm (ImmInt b)) bs
748 ppr_item F64 (CmmFloat r _)
749 = let bs = doubleToBytes (fromRational r)
750 in map (\b -> ptext SLIT("\t.byte\t") <> pprImm (ImmInt b)) bs
752 #if sparc_TARGET_ARCH
753 -- copy n paste of x86 version
754 ppr_item I16 x = [ptext SLIT("\t.short\t") <> pprImm imm]
755 ppr_item I64 x = [ptext SLIT("\t.quad\t") <> pprImm imm]
757 #if i386_TARGET_ARCH || x86_64_TARGET_ARCH
758 ppr_item I16 x = [ptext SLIT("\t.word\t") <> pprImm imm]
760 #if i386_TARGET_ARCH && darwin_TARGET_OS
761 ppr_item I64 (CmmInt x _) =
762 [ptext SLIT("\t.long\t")
763 <> int (fromIntegral (fromIntegral x :: Word32)),
764 ptext SLIT("\t.long\t")
766 (fromIntegral (x `shiftR` 32) :: Word32))]
768 #if i386_TARGET_ARCH || (darwin_TARGET_OS && x86_64_TARGET_ARCH)
769 ppr_item I64 x = [ptext SLIT("\t.quad\t") <> pprImm imm]
771 #if x86_64_TARGET_ARCH && !darwin_TARGET_OS
772 -- x86_64: binutils can't handle the R_X86_64_PC64 relocation
773 -- type, which means we can't do pc-relative 64-bit addresses.
774 -- Fortunately we're assuming the small memory model, in which
775 -- all such offsets will fit into 32 bits, so we have to stick
776 -- to 32-bit offset fields and modify the RTS appropriately
778 -- See Note [x86-64-relative] in includes/InfoTables.h
781 | isRelativeReloc x =
782 [ptext SLIT("\t.long\t") <> pprImm imm,
783 ptext SLIT("\t.long\t0")]
785 [ptext SLIT("\t.quad\t") <> pprImm imm]
787 isRelativeReloc (CmmLabelDiffOff _ _ _) = True
788 isRelativeReloc _ = False
790 #if powerpc_TARGET_ARCH
791 ppr_item I16 x = [ptext SLIT("\t.short\t") <> pprImm imm]
792 ppr_item I64 (CmmInt x _) =
793 [ptext SLIT("\t.long\t")
795 (fromIntegral (x `shiftR` 32) :: Word32)),
796 ptext SLIT("\t.long\t")
797 <> int (fromIntegral (fromIntegral x :: Word32))]
800 -- fall through to rest of (machine-specific) pprInstr...
802 -- -----------------------------------------------------------------------------
803 -- pprInstr: print an 'Instr'
805 instance Outputable Instr where
806 ppr instr = Outputable.docToSDoc $ pprInstr instr
808 pprInstr :: Instr -> Doc
810 --pprInstr (COMMENT s) = empty -- nuke 'em
812 = IF_ARCH_alpha( ((<>) (ptext SLIT("\t# ")) (ftext s))
813 ,IF_ARCH_sparc( ((<>) (ptext SLIT("! ")) (ftext s))
814 ,IF_ARCH_i386( ((<>) (ptext SLIT("# ")) (ftext s))
815 ,IF_ARCH_x86_64( ((<>) (ptext SLIT("# ")) (ftext s))
816 ,IF_ARCH_powerpc( IF_OS_linux(
817 ((<>) (ptext SLIT("# ")) (ftext s)),
818 ((<>) (ptext SLIT("; ")) (ftext s)))
822 = pprInstr (COMMENT (mkFastString ("\tdelta = " ++ show d)))
824 pprInstr (NEWBLOCK _)
825 = panic "PprMach.pprInstr: NEWBLOCK"
828 = panic "PprMach.pprInstr: LDATA"
830 -- -----------------------------------------------------------------------------
831 -- pprInstr for an Alpha
833 #if alpha_TARGET_ARCH
835 pprInstr (SPILL reg slot)
837 ptext SLIT("\tSPILL"),
841 ptext SLIT("SLOT") <> parens (int slot)]
843 pprInstr (RELOAD slot reg)
845 ptext SLIT("\tRELOAD"),
847 ptext SLIT("SLOT") <> parens (int slot),
851 pprInstr (LD size reg addr)
861 pprInstr (LDA reg addr)
863 ptext SLIT("\tlda\t"),
869 pprInstr (LDAH reg addr)
871 ptext SLIT("\tldah\t"),
877 pprInstr (LDGP reg addr)
879 ptext SLIT("\tldgp\t"),
885 pprInstr (LDI size reg imm)
895 pprInstr (ST size reg addr)
907 ptext SLIT("\tclr\t"),
911 pprInstr (ABS size ri reg)
921 pprInstr (NEG size ov ri reg)
925 if ov then ptext SLIT("v\t") else char '\t',
931 pprInstr (ADD size ov reg1 ri reg2)
935 if ov then ptext SLIT("v\t") else char '\t',
943 pprInstr (SADD size scale reg1 ri reg2)
945 ptext (case scale of {{-UNUSED:L -> SLIT("\ts4");-} Q -> SLIT("\ts8")}),
956 pprInstr (SUB size ov reg1 ri reg2)
960 if ov then ptext SLIT("v\t") else char '\t',
968 pprInstr (SSUB size scale reg1 ri reg2)
970 ptext (case scale of {{-UNUSED:L -> SLIT("\ts4");-} Q -> SLIT("\ts8")}),
981 pprInstr (MUL size ov reg1 ri reg2)
985 if ov then ptext SLIT("v\t") else char '\t',
993 pprInstr (DIV size uns reg1 ri reg2)
997 if uns then ptext SLIT("u\t") else char '\t',
1005 pprInstr (REM size uns reg1 ri reg2)
1007 ptext SLIT("\trem"),
1009 if uns then ptext SLIT("u\t") else char '\t',
1017 pprInstr (NOT ri reg)
1019 ptext SLIT("\tnot"),
1026 pprInstr (AND reg1 ri reg2) = pprRegRIReg SLIT("and") reg1 ri reg2
1027 pprInstr (ANDNOT reg1 ri reg2) = pprRegRIReg SLIT("andnot") reg1 ri reg2
1028 pprInstr (OR reg1 ri reg2) = pprRegRIReg SLIT("or") reg1 ri reg2
1029 pprInstr (ORNOT reg1 ri reg2) = pprRegRIReg SLIT("ornot") reg1 ri reg2
1030 pprInstr (XOR reg1 ri reg2) = pprRegRIReg SLIT("xor") reg1 ri reg2
1031 pprInstr (XORNOT reg1 ri reg2) = pprRegRIReg SLIT("xornot") reg1 ri reg2
1033 pprInstr (SLL reg1 ri reg2) = pprRegRIReg SLIT("sll") reg1 ri reg2
1034 pprInstr (SRL reg1 ri reg2) = pprRegRIReg SLIT("srl") reg1 ri reg2
1035 pprInstr (SRA reg1 ri reg2) = pprRegRIReg SLIT("sra") reg1 ri reg2
1037 pprInstr (ZAP reg1 ri reg2) = pprRegRIReg SLIT("zap") reg1 ri reg2
1038 pprInstr (ZAPNOT reg1 ri reg2) = pprRegRIReg SLIT("zapnot") reg1 ri reg2
1040 pprInstr (NOP) = ptext SLIT("\tnop")
1042 pprInstr (CMP cond reg1 ri reg2)
1044 ptext SLIT("\tcmp"),
1056 ptext SLIT("\tfclr\t"),
1060 pprInstr (FABS reg1 reg2)
1062 ptext SLIT("\tfabs\t"),
1068 pprInstr (FNEG size reg1 reg2)
1070 ptext SLIT("\tneg"),
1078 pprInstr (FADD size reg1 reg2 reg3) = pprSizeRegRegReg SLIT("add") size reg1 reg2 reg3
1079 pprInstr (FDIV size reg1 reg2 reg3) = pprSizeRegRegReg SLIT("div") size reg1 reg2 reg3
1080 pprInstr (FMUL size reg1 reg2 reg3) = pprSizeRegRegReg SLIT("mul") size reg1 reg2 reg3
1081 pprInstr (FSUB size reg1 reg2 reg3) = pprSizeRegRegReg SLIT("sub") size reg1 reg2 reg3
1083 pprInstr (CVTxy size1 size2 reg1 reg2)
1085 ptext SLIT("\tcvt"),
1087 case size2 of {Q -> ptext SLIT("qc"); _ -> pprSize size2},
1094 pprInstr (FCMP size cond reg1 reg2 reg3)
1096 ptext SLIT("\tcmp"),
1107 pprInstr (FMOV reg1 reg2)
1109 ptext SLIT("\tfmov\t"),
1115 pprInstr (BI ALWAYS reg lab) = pprInstr (BR lab)
1117 pprInstr (BI NEVER reg lab) = empty
1119 pprInstr (BI cond reg lab)
1129 pprInstr (BF cond reg lab)
1140 = (<>) (ptext SLIT("\tbr\t")) (pprImm lab)
1142 pprInstr (JMP reg addr hint)
1144 ptext SLIT("\tjmp\t"),
1152 pprInstr (BSR imm n)
1153 = (<>) (ptext SLIT("\tbsr\t")) (pprImm imm)
1155 pprInstr (JSR reg addr n)
1157 ptext SLIT("\tjsr\t"),
1163 pprInstr (FUNBEGIN clab)
1165 if (externallyVisibleCLabel clab) then
1166 hcat [ptext SLIT("\t.globl\t"), pp_lab, char '\n']
1169 ptext SLIT("\t.ent "),
1178 pp_lab = pprCLabel_asm clab
1180 -- NEVER use commas within those string literals, cpp will ruin your day
1181 pp_ldgp = hcat [ ptext SLIT(":\n\tldgp $29"), char ',', ptext SLIT("0($27)\n") ]
1182 pp_frame = hcat [ ptext SLIT("..ng:\n\t.frame $30"), char ',',
1183 ptext SLIT("4240"), char ',',
1184 ptext SLIT("$26"), char ',',
1185 ptext SLIT("0\n\t.prologue 1") ]
1187 pprInstr (FUNEND clab)
1188 = (<>) (ptext SLIT("\t.align 4\n\t.end ")) (pprCLabel_asm clab)
1191 Continue with Alpha-only printing bits and bobs:
1195 pprRI (RIReg r) = pprReg r
1196 pprRI (RIImm r) = pprImm r
1198 pprRegRIReg :: LitString -> Reg -> RI -> Reg -> Doc
1199 pprRegRIReg name reg1 ri reg2
1211 pprSizeRegRegReg :: LitString -> Size -> Reg -> Reg -> Reg -> Doc
1212 pprSizeRegRegReg name size reg1 reg2 reg3
1225 #endif /* alpha_TARGET_ARCH */
1228 -- -----------------------------------------------------------------------------
1229 -- pprInstr for an x86
1231 #if i386_TARGET_ARCH || x86_64_TARGET_ARCH
1233 pprInstr (SPILL reg slot)
1235 ptext SLIT("\tSPILL"),
1239 ptext SLIT("SLOT") <> parens (int slot)]
1241 pprInstr (RELOAD slot reg)
1243 ptext SLIT("\tRELOAD"),
1245 ptext SLIT("SLOT") <> parens (int slot),
1249 pprInstr (MOV size src dst)
1250 = pprSizeOpOp SLIT("mov") size src dst
1252 pprInstr (MOVZxL I32 src dst) = pprSizeOpOp SLIT("mov") I32 src dst
1253 -- 32-to-64 bit zero extension on x86_64 is accomplished by a simple
1254 -- movl. But we represent it as a MOVZxL instruction, because
1255 -- the reg alloc would tend to throw away a plain reg-to-reg
1256 -- move, and we still want it to do that.
1258 pprInstr (MOVZxL sizes src dst) = pprSizeOpOpCoerce SLIT("movz") sizes I32 src dst
1259 -- zero-extension only needs to extend to 32 bits: on x86_64,
1260 -- the remaining zero-extension to 64 bits is automatic, and the 32-bit
1261 -- instruction is shorter.
1263 pprInstr (MOVSxL sizes src dst) = pprSizeOpOpCoerce SLIT("movs") sizes wordRep src dst
1265 -- here we do some patching, since the physical registers are only set late
1266 -- in the code generation.
1267 pprInstr (LEA size (OpAddr (AddrBaseIndex src1@(EABaseReg reg1) (EAIndex reg2 1) (ImmInt 0))) dst@(OpReg reg3))
1269 = pprSizeOpOp SLIT("add") size (OpReg reg2) dst
1270 pprInstr (LEA size (OpAddr (AddrBaseIndex src1@(EABaseReg reg1) (EAIndex reg2 1) (ImmInt 0))) dst@(OpReg reg3))
1272 = pprSizeOpOp SLIT("add") size (OpReg reg1) dst
1273 pprInstr (LEA size (OpAddr (AddrBaseIndex src1@(EABaseReg reg1) EAIndexNone displ)) dst@(OpReg reg3))
1275 = pprInstr (ADD size (OpImm displ) dst)
1276 pprInstr (LEA size src dst) = pprSizeOpOp SLIT("lea") size src dst
1278 pprInstr (ADD size (OpImm (ImmInt (-1))) dst)
1279 = pprSizeOp SLIT("dec") size dst
1280 pprInstr (ADD size (OpImm (ImmInt 1)) dst)
1281 = pprSizeOp SLIT("inc") size dst
1282 pprInstr (ADD size src dst)
1283 = pprSizeOpOp SLIT("add") size src dst
1284 pprInstr (ADC size src dst)
1285 = pprSizeOpOp SLIT("adc") size src dst
1286 pprInstr (SUB size src dst) = pprSizeOpOp SLIT("sub") size src dst
1287 pprInstr (IMUL size op1 op2) = pprSizeOpOp SLIT("imul") size op1 op2
1289 {- A hack. The Intel documentation says that "The two and three
1290 operand forms [of IMUL] may also be used with unsigned operands
1291 because the lower half of the product is the same regardless if
1292 (sic) the operands are signed or unsigned. The CF and OF flags,
1293 however, cannot be used to determine if the upper half of the
1294 result is non-zero." So there.
1296 pprInstr (AND size src dst) = pprSizeOpOp SLIT("and") size src dst
1297 pprInstr (OR size src dst) = pprSizeOpOp SLIT("or") size src dst
1299 pprInstr (XOR F32 src dst) = pprOpOp SLIT("xorps") F32 src dst
1300 pprInstr (XOR F64 src dst) = pprOpOp SLIT("xorpd") F64 src dst
1301 pprInstr (XOR size src dst) = pprSizeOpOp SLIT("xor") size src dst
1303 pprInstr (NOT size op) = pprSizeOp SLIT("not") size op
1304 pprInstr (NEGI size op) = pprSizeOp SLIT("neg") size op
1306 pprInstr (SHL size src dst) = pprShift SLIT("shl") size src dst
1307 pprInstr (SAR size src dst) = pprShift SLIT("sar") size src dst
1308 pprInstr (SHR size src dst) = pprShift SLIT("shr") size src dst
1310 pprInstr (BT size imm src) = pprSizeImmOp SLIT("bt") size imm src
1312 pprInstr (CMP size src dst)
1313 | isFloatingRep size = pprSizeOpOp SLIT("ucomi") size src dst -- SSE2
1314 | otherwise = pprSizeOpOp SLIT("cmp") size src dst
1316 pprInstr (TEST size src dst) = pprSizeOpOp SLIT("test") size src dst
1317 pprInstr (PUSH size op) = pprSizeOp SLIT("push") size op
1318 pprInstr (POP size op) = pprSizeOp SLIT("pop") size op
1320 -- both unused (SDM):
1321 -- pprInstr PUSHA = ptext SLIT("\tpushal")
1322 -- pprInstr POPA = ptext SLIT("\tpopal")
1324 pprInstr NOP = ptext SLIT("\tnop")
1325 pprInstr (CLTD I32) = ptext SLIT("\tcltd")
1326 pprInstr (CLTD I64) = ptext SLIT("\tcqto")
1328 pprInstr (SETCC cond op) = pprCondInstr SLIT("set") cond (pprOperand I8 op)
1330 pprInstr (JXX cond (BlockId id))
1331 = pprCondInstr SLIT("j") cond (pprCLabel_asm lab)
1332 where lab = mkAsmTempLabel id
1334 pprInstr (JXX_GBL cond imm) = pprCondInstr SLIT("j") cond (pprImm imm)
1336 pprInstr (JMP (OpImm imm)) = (<>) (ptext SLIT("\tjmp ")) (pprImm imm)
1337 pprInstr (JMP op) = (<>) (ptext SLIT("\tjmp *")) (pprOperand wordRep op)
1338 pprInstr (JMP_TBL op ids) = pprInstr (JMP op)
1339 pprInstr (CALL (Left imm) _) = (<>) (ptext SLIT("\tcall ")) (pprImm imm)
1340 pprInstr (CALL (Right reg) _) = (<>) (ptext SLIT("\tcall *")) (pprReg wordRep reg)
1342 pprInstr (IDIV sz op) = pprSizeOp SLIT("idiv") sz op
1343 pprInstr (DIV sz op) = pprSizeOp SLIT("div") sz op
1344 pprInstr (IMUL2 sz op) = pprSizeOp SLIT("imul") sz op
1346 #if x86_64_TARGET_ARCH
1347 pprInstr (MUL size op1 op2) = pprSizeOpOp SLIT("mul") size op1 op2
1349 pprInstr (FDIV size op1 op2) = pprSizeOpOp SLIT("div") size op1 op2
1351 pprInstr (CVTSS2SD from to) = pprRegReg SLIT("cvtss2sd") from to
1352 pprInstr (CVTSD2SS from to) = pprRegReg SLIT("cvtsd2ss") from to
1353 pprInstr (CVTTSS2SIQ from to) = pprOpReg SLIT("cvttss2siq") from to
1354 pprInstr (CVTTSD2SIQ from to) = pprOpReg SLIT("cvttsd2siq") from to
1355 pprInstr (CVTSI2SS from to) = pprOpReg SLIT("cvtsi2ssq") from to
1356 pprInstr (CVTSI2SD from to) = pprOpReg SLIT("cvtsi2sdq") from to
1359 -- FETCHGOT for PIC on ELF platforms
1360 pprInstr (FETCHGOT reg)
1361 = vcat [ ptext SLIT("\tcall 1f"),
1362 hcat [ ptext SLIT("1:\tpopl\t"), pprReg I32 reg ],
1363 hcat [ ptext SLIT("\taddl\t$_GLOBAL_OFFSET_TABLE_+(.-1b), "),
1367 -- FETCHPC for PIC on Darwin/x86
1368 -- get the instruction pointer into a register
1369 -- (Terminology note: the IP is called Program Counter on PPC,
1370 -- and it's a good thing to use the same name on both platforms)
1371 pprInstr (FETCHPC reg)
1372 = vcat [ ptext SLIT("\tcall 1f"),
1373 hcat [ ptext SLIT("1:\tpopl\t"), pprReg I32 reg ]
1380 -- -----------------------------------------------------------------------------
1381 -- i386 floating-point
1383 #if i386_TARGET_ARCH
1384 -- Simulating a flat register set on the x86 FP stack is tricky.
1385 -- you have to free %st(7) before pushing anything on the FP reg stack
1386 -- so as to preclude the possibility of a FP stack overflow exception.
1387 pprInstr g@(GMOV src dst)
1391 = pprG g (hcat [gtab, gpush src 0, gsemi, gpop dst 1])
1393 -- GLD sz addr dst ==> FFREE %st(7) ; FLDsz addr ; FSTP (dst+1)
1394 pprInstr g@(GLD sz addr dst)
1395 = pprG g (hcat [gtab, text "ffree %st(7) ; fld", pprSize sz, gsp,
1396 pprAddr addr, gsemi, gpop dst 1])
1398 -- GST sz src addr ==> FFREE %st(7) ; FLD dst ; FSTPsz addr
1399 pprInstr g@(GST sz src addr)
1400 = pprG g (hcat [gtab, gpush src 0, gsemi,
1401 text "fstp", pprSize sz, gsp, pprAddr addr])
1403 pprInstr g@(GLDZ dst)
1404 = pprG g (hcat [gtab, text "ffree %st(7) ; fldz ; ", gpop dst 1])
1405 pprInstr g@(GLD1 dst)
1406 = pprG g (hcat [gtab, text "ffree %st(7) ; fld1 ; ", gpop dst 1])
1408 pprInstr g@(GFTOI src dst)
1409 = pprInstr (GDTOI src dst)
1410 pprInstr g@(GDTOI src dst)
1411 = pprG g (hcat [gtab, text "subl $4, %esp ; ",
1412 gpush src 0, gsemi, text "fistpl 0(%esp) ; popl ",
1415 pprInstr g@(GITOF src dst)
1416 = pprInstr (GITOD src dst)
1417 pprInstr g@(GITOD src dst)
1418 = pprG g (hcat [gtab, text "pushl ", pprReg I32 src,
1419 text " ; ffree %st(7); fildl (%esp) ; ",
1420 gpop dst 1, text " ; addl $4,%esp"])
1422 {- Gruesome swamp follows. If you're unfortunate enough to have ventured
1423 this far into the jungle AND you give a Rat's Ass (tm) what's going
1424 on, here's the deal. Generate code to do a floating point comparison
1425 of src1 and src2, of kind cond, and set the Zero flag if true.
1427 The complications are to do with handling NaNs correctly. We want the
1428 property that if either argument is NaN, then the result of the
1429 comparison is False ... except if we're comparing for inequality,
1430 in which case the answer is True.
1432 Here's how the general (non-inequality) case works. As an
1433 example, consider generating the an equality test:
1435 pushl %eax -- we need to mess with this
1436 <get src1 to top of FPU stack>
1437 fcomp <src2 location in FPU stack> and pop pushed src1
1438 -- Result of comparison is in FPU Status Register bits
1440 fstsw %ax -- Move FPU Status Reg to %ax
1441 sahf -- move C3 C2 C0 from %ax to integer flag reg
1442 -- now the serious magic begins
1443 setpo %ah -- %ah = if comparable(neither arg was NaN) then 1 else 0
1444 sete %al -- %al = if arg1 == arg2 then 1 else 0
1445 andb %ah,%al -- %al &= %ah
1446 -- so %al == 1 iff (comparable && same); else it holds 0
1447 decb %al -- %al == 0, ZeroFlag=1 iff (comparable && same);
1448 else %al == 0xFF, ZeroFlag=0
1449 -- the zero flag is now set as we desire.
1452 The special case of inequality differs thusly:
1454 setpe %ah -- %ah = if incomparable(either arg was NaN) then 1 else 0
1455 setne %al -- %al = if arg1 /= arg2 then 1 else 0
1456 orb %ah,%al -- %al = if (incomparable || different) then 1 else 0
1457 decb %al -- if (incomparable || different) then (%al == 0, ZF=1)
1458 else (%al == 0xFF, ZF=0)
1460 pprInstr g@(GCMP cond src1 src2)
1461 | case cond of { NE -> True; other -> False }
1463 hcat [gtab, text "pushl %eax ; ",gpush src1 0],
1464 hcat [gtab, text "fcomp ", greg src2 1,
1465 text "; fstsw %ax ; sahf ; setpe %ah"],
1466 hcat [gtab, text "setne %al ; ",
1467 text "orb %ah,%al ; decb %al ; popl %eax"]
1471 hcat [gtab, text "pushl %eax ; ",gpush src1 0],
1472 hcat [gtab, text "fcomp ", greg src2 1,
1473 text "; fstsw %ax ; sahf ; setpo %ah"],
1474 hcat [gtab, text "set", pprCond (fix_FP_cond cond), text " %al ; ",
1475 text "andb %ah,%al ; decb %al ; popl %eax"]
1478 {- On the 486, the flags set by FP compare are the unsigned ones!
1479 (This looks like a HACK to me. WDP 96/03)
1481 fix_FP_cond :: Cond -> Cond
1482 fix_FP_cond GE = GEU
1483 fix_FP_cond GTT = GU
1484 fix_FP_cond LTT = LU
1485 fix_FP_cond LE = LEU
1486 fix_FP_cond EQQ = EQQ
1488 -- there should be no others
1491 pprInstr g@(GABS sz src dst)
1492 = pprG g (hcat [gtab, gpush src 0, text " ; fabs ; ", gpop dst 1])
1493 pprInstr g@(GNEG sz src dst)
1494 = pprG g (hcat [gtab, gpush src 0, text " ; fchs ; ", gpop dst 1])
1496 pprInstr g@(GSQRT sz src dst)
1497 = pprG g (hcat [gtab, gpush src 0, text " ; fsqrt"] $$
1498 hcat [gtab, gcoerceto sz, gpop dst 1])
1499 pprInstr g@(GSIN sz src dst)
1500 = pprG g (hcat [gtab, gpush src 0, text " ; fsin"] $$
1501 hcat [gtab, gcoerceto sz, gpop dst 1])
1502 pprInstr g@(GCOS sz src dst)
1503 = pprG g (hcat [gtab, gpush src 0, text " ; fcos"] $$
1504 hcat [gtab, gcoerceto sz, gpop dst 1])
1505 pprInstr g@(GTAN sz src dst)
1506 = pprG g (hcat [gtab, text "ffree %st(6) ; ",
1507 gpush src 0, text " ; fptan ; ",
1508 text " fstp %st(0)"] $$
1509 hcat [gtab, gcoerceto sz, gpop dst 1])
1511 -- In the translations for GADD, GMUL, GSUB and GDIV,
1512 -- the first two cases are mere optimisations. The otherwise clause
1513 -- generates correct code under all circumstances.
1515 pprInstr g@(GADD sz src1 src2 dst)
1517 = pprG g (text "\t#GADD-xxxcase1" $$
1518 hcat [gtab, gpush src2 0,
1519 text " ; faddp %st(0),", greg src1 1])
1521 = pprG g (text "\t#GADD-xxxcase2" $$
1522 hcat [gtab, gpush src1 0,
1523 text " ; faddp %st(0),", greg src2 1])
1525 = pprG g (hcat [gtab, gpush src1 0,
1526 text " ; fadd ", greg src2 1, text ",%st(0)",
1530 pprInstr g@(GMUL sz src1 src2 dst)
1532 = pprG g (text "\t#GMUL-xxxcase1" $$
1533 hcat [gtab, gpush src2 0,
1534 text " ; fmulp %st(0),", greg src1 1])
1536 = pprG g (text "\t#GMUL-xxxcase2" $$
1537 hcat [gtab, gpush src1 0,
1538 text " ; fmulp %st(0),", greg src2 1])
1540 = pprG g (hcat [gtab, gpush src1 0,
1541 text " ; fmul ", greg src2 1, text ",%st(0)",
1545 pprInstr g@(GSUB sz src1 src2 dst)
1547 = pprG g (text "\t#GSUB-xxxcase1" $$
1548 hcat [gtab, gpush src2 0,
1549 text " ; fsubrp %st(0),", greg src1 1])
1551 = pprG g (text "\t#GSUB-xxxcase2" $$
1552 hcat [gtab, gpush src1 0,
1553 text " ; fsubp %st(0),", greg src2 1])
1555 = pprG g (hcat [gtab, gpush src1 0,
1556 text " ; fsub ", greg src2 1, text ",%st(0)",
1560 pprInstr g@(GDIV sz src1 src2 dst)
1562 = pprG g (text "\t#GDIV-xxxcase1" $$
1563 hcat [gtab, gpush src2 0,
1564 text " ; fdivrp %st(0),", greg src1 1])
1566 = pprG g (text "\t#GDIV-xxxcase2" $$
1567 hcat [gtab, gpush src1 0,
1568 text " ; fdivp %st(0),", greg src2 1])
1570 = pprG g (hcat [gtab, gpush src1 0,
1571 text " ; fdiv ", greg src2 1, text ",%st(0)",
1576 = vcat [ ptext SLIT("\tffree %st(0) ;ffree %st(1) ;ffree %st(2) ;ffree %st(3)"),
1577 ptext SLIT("\tffree %st(4) ;ffree %st(5) ;ffree %st(6) ;ffree %st(7)")
1580 --------------------------
1582 -- coerce %st(0) to the specified size
1583 gcoerceto F64 = empty
1584 gcoerceto F32 = empty --text "subl $4,%esp ; fstps (%esp) ; flds (%esp) ; addl $4,%esp ; "
1587 = hcat [text "ffree %st(7) ; fld ", greg reg offset]
1589 = hcat [text "fstp ", greg reg offset]
1591 greg reg offset = text "%st(" <> int (gregno reg - 8+offset) <> char ')'
1596 gregno (RealReg i) = i
1597 gregno other = --pprPanic "gregno" (ppr other)
1598 999 -- bogus; only needed for debug printing
1600 pprG :: Instr -> Doc -> Doc
1602 = (char '#' <> pprGInstr fake) $$ actual
1604 pprGInstr (GMOV src dst) = pprSizeRegReg SLIT("gmov") F64 src dst
1605 pprGInstr (GLD sz src dst) = pprSizeAddrReg SLIT("gld") sz src dst
1606 pprGInstr (GST sz src dst) = pprSizeRegAddr SLIT("gst") sz src dst
1608 pprGInstr (GLDZ dst) = pprSizeReg SLIT("gldz") F64 dst
1609 pprGInstr (GLD1 dst) = pprSizeReg SLIT("gld1") F64 dst
1611 pprGInstr (GFTOI src dst) = pprSizeSizeRegReg SLIT("gftoi") F32 I32 src dst
1612 pprGInstr (GDTOI src dst) = pprSizeSizeRegReg SLIT("gdtoi") F64 I32 src dst
1614 pprGInstr (GITOF src dst) = pprSizeSizeRegReg SLIT("gitof") I32 F32 src dst
1615 pprGInstr (GITOD src dst) = pprSizeSizeRegReg SLIT("gitod") I32 F64 src dst
1617 pprGInstr (GCMP co src dst) = pprCondRegReg SLIT("gcmp_") F64 co src dst
1618 pprGInstr (GABS sz src dst) = pprSizeRegReg SLIT("gabs") sz src dst
1619 pprGInstr (GNEG sz src dst) = pprSizeRegReg SLIT("gneg") sz src dst
1620 pprGInstr (GSQRT sz src dst) = pprSizeRegReg SLIT("gsqrt") sz src dst
1621 pprGInstr (GSIN sz src dst) = pprSizeRegReg SLIT("gsin") sz src dst
1622 pprGInstr (GCOS sz src dst) = pprSizeRegReg SLIT("gcos") sz src dst
1623 pprGInstr (GTAN sz src dst) = pprSizeRegReg SLIT("gtan") sz src dst
1625 pprGInstr (GADD sz src1 src2 dst) = pprSizeRegRegReg SLIT("gadd") sz src1 src2 dst
1626 pprGInstr (GSUB sz src1 src2 dst) = pprSizeRegRegReg SLIT("gsub") sz src1 src2 dst
1627 pprGInstr (GMUL sz src1 src2 dst) = pprSizeRegRegReg SLIT("gmul") sz src1 src2 dst
1628 pprGInstr (GDIV sz src1 src2 dst) = pprSizeRegRegReg SLIT("gdiv") sz src1 src2 dst
1631 #if i386_TARGET_ARCH || x86_64_TARGET_ARCH
1633 -- Continue with I386-only printing bits and bobs:
1635 pprDollImm :: Imm -> Doc
1637 pprDollImm i = ptext SLIT("$") <> pprImm i
1639 pprOperand :: MachRep -> Operand -> Doc
1640 pprOperand s (OpReg r) = pprReg s r
1641 pprOperand s (OpImm i) = pprDollImm i
1642 pprOperand s (OpAddr ea) = pprAddr ea
1644 pprMnemonic_ :: LitString -> Doc
1646 char '\t' <> ptext name <> space
1648 pprMnemonic :: LitString -> MachRep -> Doc
1649 pprMnemonic name size =
1650 char '\t' <> ptext name <> pprSize size <> space
1652 pprSizeImmOp :: LitString -> MachRep -> Imm -> Operand -> Doc
1653 pprSizeImmOp name size imm op1
1655 pprMnemonic name size,
1662 pprSizeOp :: LitString -> MachRep -> Operand -> Doc
1663 pprSizeOp name size op1
1665 pprMnemonic name size,
1669 pprSizeOpOp :: LitString -> MachRep -> Operand -> Operand -> Doc
1670 pprSizeOpOp name size op1 op2
1672 pprMnemonic name size,
1673 pprOperand size op1,
1678 pprOpOp :: LitString -> MachRep -> Operand -> Operand -> Doc
1679 pprOpOp name size op1 op2
1682 pprOperand size op1,
1687 pprSizeReg :: LitString -> MachRep -> Reg -> Doc
1688 pprSizeReg name size reg1
1690 pprMnemonic name size,
1694 pprSizeRegReg :: LitString -> MachRep -> Reg -> Reg -> Doc
1695 pprSizeRegReg name size reg1 reg2
1697 pprMnemonic name size,
1703 pprRegReg :: LitString -> Reg -> Reg -> Doc
1704 pprRegReg name reg1 reg2
1707 pprReg wordRep reg1,
1712 pprOpReg :: LitString -> Operand -> Reg -> Doc
1713 pprOpReg name op1 reg2
1716 pprOperand wordRep op1,
1721 pprCondRegReg :: LitString -> MachRep -> Cond -> Reg -> Reg -> Doc
1722 pprCondRegReg name size cond reg1 reg2
1733 pprSizeSizeRegReg :: LitString -> MachRep -> MachRep -> Reg -> Reg -> Doc
1734 pprSizeSizeRegReg name size1 size2 reg1 reg2
1747 pprSizeRegRegReg :: LitString -> MachRep -> Reg -> Reg -> Reg -> Doc
1748 pprSizeRegRegReg name size reg1 reg2 reg3
1750 pprMnemonic name size,
1758 pprSizeAddrReg :: LitString -> MachRep -> AddrMode -> Reg -> Doc
1759 pprSizeAddrReg name size op dst
1761 pprMnemonic name size,
1767 pprSizeRegAddr :: LitString -> MachRep -> Reg -> AddrMode -> Doc
1768 pprSizeRegAddr name size src op
1770 pprMnemonic name size,
1776 pprShift :: LitString -> MachRep -> Operand -> Operand -> Doc
1777 pprShift name size src dest
1779 pprMnemonic name size,
1780 pprOperand I8 src, -- src is 8-bit sized
1782 pprOperand size dest
1785 pprSizeOpOpCoerce :: LitString -> MachRep -> MachRep -> Operand -> Operand -> Doc
1786 pprSizeOpOpCoerce name size1 size2 op1 op2
1787 = hcat [ char '\t', ptext name, pprSize size1, pprSize size2, space,
1788 pprOperand size1 op1,
1790 pprOperand size2 op2
1793 pprCondInstr :: LitString -> Cond -> Doc -> Doc
1794 pprCondInstr name cond arg
1795 = hcat [ char '\t', ptext name, pprCond cond, space, arg]
1797 #endif /* i386_TARGET_ARCH */
1800 -- ------------------------------------------------------------------------------- pprInstr for a SPARC
1802 #if sparc_TARGET_ARCH
1804 -- a clumsy hack for now, to handle possible double alignment problems
1806 -- even clumsier, to allow for RegReg regs that show when doing indexed
1807 -- reads (bytearrays).
1810 pprInstr (SPILL reg slot)
1812 ptext SLIT("\tSPILL"),
1816 ptext SLIT("SLOT") <> parens (int slot)]
1818 pprInstr (RELOAD slot reg)
1820 ptext SLIT("\tRELOAD"),
1822 ptext SLIT("SLOT") <> parens (int slot),
1826 -- Translate to the following:
1829 -- ld [g1+4],%f(n+1)
1830 -- sub g1,g2,g1 -- to restore g1
1832 pprInstr (LD F64 (AddrRegReg g1 g2) reg)
1834 hcat [ptext SLIT("\tadd\t"), pprReg g1,comma,pprReg g2,comma,pprReg g1],
1835 hcat [pp_ld_lbracket, pprReg g1, pp_rbracket_comma, pprReg reg],
1836 hcat [pp_ld_lbracket, pprReg g1, ptext SLIT("+4]"), comma, pprReg (fPair reg)],
1837 hcat [ptext SLIT("\tsub\t"), pprReg g1,comma,pprReg g2,comma,pprReg g1]
1842 -- ld [addr+4],%f(n+1)
1843 pprInstr (LD F64 addr reg) | isJust off_addr
1845 hcat [pp_ld_lbracket, pprAddr addr, pp_rbracket_comma, pprReg reg],
1846 hcat [pp_ld_lbracket, pprAddr addr2, pp_rbracket_comma,pprReg (fPair reg)]
1849 off_addr = addrOffset addr 4
1850 addr2 = case off_addr of Just x -> x
1853 pprInstr (LD size addr reg)
1864 -- The same clumsy hack as above
1866 -- Translate to the following:
1869 -- st %f(n+1),[g1+4]
1870 -- sub g1,g2,g1 -- to restore g1
1871 pprInstr (ST F64 reg (AddrRegReg g1 g2))
1873 hcat [ptext SLIT("\tadd\t"), pprReg g1,comma,pprReg g2,comma,pprReg g1],
1874 hcat [ptext SLIT("\tst\t"), pprReg reg, pp_comma_lbracket,
1876 hcat [ptext SLIT("\tst\t"), pprReg (fPair reg), pp_comma_lbracket,
1877 pprReg g1, ptext SLIT("+4]")],
1878 hcat [ptext SLIT("\tsub\t"), pprReg g1,comma,pprReg g2,comma,pprReg g1]
1883 -- st %f(n+1),[addr+4]
1884 pprInstr (ST F64 reg addr) | isJust off_addr
1886 hcat [ptext SLIT("\tst\t"), pprReg reg, pp_comma_lbracket,
1887 pprAddr addr, rbrack],
1888 hcat [ptext SLIT("\tst\t"), pprReg (fPair reg), pp_comma_lbracket,
1889 pprAddr addr2, rbrack]
1892 off_addr = addrOffset addr 4
1893 addr2 = case off_addr of Just x -> x
1895 -- no distinction is made between signed and unsigned bytes on stores for the
1896 -- Sparc opcodes (at least I cannot see any, and gas is nagging me --SOF),
1897 -- so we call a special-purpose pprSize for ST..
1899 pprInstr (ST size reg addr)
1910 pprInstr (ADD x cc reg1 ri reg2)
1911 | not x && not cc && riZero ri
1912 = hcat [ ptext SLIT("\tmov\t"), pprReg reg1, comma, pprReg reg2 ]
1914 = pprRegRIReg (if x then SLIT("addx") else SLIT("add")) cc reg1 ri reg2
1916 pprInstr (SUB x cc reg1 ri reg2)
1917 | not x && cc && reg2 == g0
1918 = hcat [ ptext SLIT("\tcmp\t"), pprReg reg1, comma, pprRI ri ]
1919 | not x && not cc && riZero ri
1920 = hcat [ ptext SLIT("\tmov\t"), pprReg reg1, comma, pprReg reg2 ]
1922 = pprRegRIReg (if x then SLIT("subx") else SLIT("sub")) cc reg1 ri reg2
1924 pprInstr (AND b reg1 ri reg2) = pprRegRIReg SLIT("and") b reg1 ri reg2
1925 pprInstr (ANDN b reg1 ri reg2) = pprRegRIReg SLIT("andn") b reg1 ri reg2
1927 pprInstr (OR b reg1 ri reg2)
1928 | not b && reg1 == g0
1929 = let doit = hcat [ ptext SLIT("\tmov\t"), pprRI ri, comma, pprReg reg2 ]
1931 RIReg rrr | rrr == reg2 -> empty
1934 = pprRegRIReg SLIT("or") b reg1 ri reg2
1936 pprInstr (ORN b reg1 ri reg2) = pprRegRIReg SLIT("orn") b reg1 ri reg2
1938 pprInstr (XOR b reg1 ri reg2) = pprRegRIReg SLIT("xor") b reg1 ri reg2
1939 pprInstr (XNOR b reg1 ri reg2) = pprRegRIReg SLIT("xnor") b reg1 ri reg2
1941 pprInstr (SLL reg1 ri reg2) = pprRegRIReg SLIT("sll") False reg1 ri reg2
1942 pprInstr (SRL reg1 ri reg2) = pprRegRIReg SLIT("srl") False reg1 ri reg2
1943 pprInstr (SRA reg1 ri reg2) = pprRegRIReg SLIT("sra") False reg1 ri reg2
1945 pprInstr (RDY rd) = ptext SLIT("\trd\t%y,") <> pprReg rd
1946 pprInstr (SMUL b reg1 ri reg2) = pprRegRIReg SLIT("smul") b reg1 ri reg2
1947 pprInstr (UMUL b reg1 ri reg2) = pprRegRIReg SLIT("umul") b reg1 ri reg2
1949 pprInstr (SETHI imm reg)
1951 ptext SLIT("\tsethi\t"),
1957 pprInstr NOP = ptext SLIT("\tnop")
1959 pprInstr (FABS F32 reg1 reg2) = pprSizeRegReg SLIT("fabs") F32 reg1 reg2
1960 pprInstr (FABS F64 reg1 reg2)
1961 = (<>) (pprSizeRegReg SLIT("fabs") F32 reg1 reg2)
1962 (if (reg1 == reg2) then empty
1963 else (<>) (char '\n')
1964 (pprSizeRegReg SLIT("fmov") F32 (fPair reg1) (fPair reg2)))
1966 pprInstr (FADD size reg1 reg2 reg3)
1967 = pprSizeRegRegReg SLIT("fadd") size reg1 reg2 reg3
1968 pprInstr (FCMP e size reg1 reg2)
1969 = pprSizeRegReg (if e then SLIT("fcmpe") else SLIT("fcmp")) size reg1 reg2
1970 pprInstr (FDIV size reg1 reg2 reg3)
1971 = pprSizeRegRegReg SLIT("fdiv") size reg1 reg2 reg3
1973 pprInstr (FMOV F32 reg1 reg2) = pprSizeRegReg SLIT("fmov") F32 reg1 reg2
1974 pprInstr (FMOV F64 reg1 reg2)
1975 = (<>) (pprSizeRegReg SLIT("fmov") F32 reg1 reg2)
1976 (if (reg1 == reg2) then empty
1977 else (<>) (char '\n')
1978 (pprSizeRegReg SLIT("fmov") F32 (fPair reg1) (fPair reg2)))
1980 pprInstr (FMUL size reg1 reg2 reg3)
1981 = pprSizeRegRegReg SLIT("fmul") size reg1 reg2 reg3
1983 pprInstr (FNEG F32 reg1 reg2) = pprSizeRegReg SLIT("fneg") F32 reg1 reg2
1984 pprInstr (FNEG F64 reg1 reg2)
1985 = (<>) (pprSizeRegReg SLIT("fneg") F32 reg1 reg2)
1986 (if (reg1 == reg2) then empty
1987 else (<>) (char '\n')
1988 (pprSizeRegReg SLIT("fmov") F32 (fPair reg1) (fPair reg2)))
1990 pprInstr (FSQRT size reg1 reg2) = pprSizeRegReg SLIT("fsqrt") size reg1 reg2
1991 pprInstr (FSUB size reg1 reg2 reg3) = pprSizeRegRegReg SLIT("fsub") size reg1 reg2 reg3
1992 pprInstr (FxTOy size1 size2 reg1 reg2)
1999 F64 -> SLIT("dto")),
2004 F64 -> SLIT("d\t")),
2005 pprReg reg1, comma, pprReg reg2
2009 pprInstr (BI cond b lab)
2011 ptext SLIT("\tb"), pprCond cond,
2012 if b then pp_comma_a else empty,
2017 pprInstr (BF cond b lab)
2019 ptext SLIT("\tfb"), pprCond cond,
2020 if b then pp_comma_a else empty,
2025 pprInstr (JMP addr) = (<>) (ptext SLIT("\tjmp\t")) (pprAddr addr)
2027 pprInstr (CALL (Left imm) n _)
2028 = hcat [ ptext SLIT("\tcall\t"), pprImm imm, comma, int n ]
2029 pprInstr (CALL (Right reg) n _)
2030 = hcat [ ptext SLIT("\tcall\t"), pprReg reg, comma, int n ]
2033 pprRI (RIReg r) = pprReg r
2034 pprRI (RIImm r) = pprImm r
2036 pprSizeRegReg :: LitString -> MachRep -> Reg -> Reg -> Doc
2037 pprSizeRegReg name size reg1 reg2
2042 F32 -> ptext SLIT("s\t")
2043 F64 -> ptext SLIT("d\t")),
2049 pprSizeRegRegReg :: LitString -> MachRep -> Reg -> Reg -> Reg -> Doc
2050 pprSizeRegRegReg name size reg1 reg2 reg3
2055 F32 -> ptext SLIT("s\t")
2056 F64 -> ptext SLIT("d\t")),
2064 pprRegRIReg :: LitString -> Bool -> Reg -> RI -> Reg -> Doc
2065 pprRegRIReg name b reg1 ri reg2
2069 if b then ptext SLIT("cc\t") else char '\t',
2077 pprRIReg :: LitString -> Bool -> RI -> Reg -> Doc
2078 pprRIReg name b ri reg1
2082 if b then ptext SLIT("cc\t") else char '\t',
2088 pp_ld_lbracket = ptext SLIT("\tld\t[")
2089 pp_rbracket_comma = text "],"
2090 pp_comma_lbracket = text ",["
2091 pp_comma_a = text ",a"
2093 #endif /* sparc_TARGET_ARCH */
2096 -- -----------------------------------------------------------------------------
2097 -- pprInstr for PowerPC
2099 #if powerpc_TARGET_ARCH
2101 pprInstr (SPILL reg slot)
2103 ptext SLIT("\tSPILL"),
2107 ptext SLIT("SLOT") <> parens (int slot)]
2109 pprInstr (RELOAD slot reg)
2111 ptext SLIT("\tRELOAD"),
2113 ptext SLIT("SLOT") <> parens (int slot),
2117 pprInstr (LD sz reg addr) = hcat [
2126 case addr of AddrRegImm _ _ -> empty
2127 AddrRegReg _ _ -> char 'x',
2133 pprInstr (LA sz reg addr) = hcat [
2142 case addr of AddrRegImm _ _ -> empty
2143 AddrRegReg _ _ -> char 'x',
2149 pprInstr (ST sz reg addr) = hcat [
2153 case addr of AddrRegImm _ _ -> empty
2154 AddrRegReg _ _ -> char 'x',
2160 pprInstr (STU sz reg addr) = hcat [
2165 case addr of AddrRegImm _ _ -> empty
2166 AddrRegReg _ _ -> char 'x',
2171 pprInstr (LIS reg imm) = hcat [
2179 pprInstr (LI reg imm) = hcat [
2187 pprInstr (MR reg1 reg2)
2188 | reg1 == reg2 = empty
2189 | otherwise = hcat [
2191 case regClass reg1 of
2192 RcInteger -> ptext SLIT("mr")
2193 _ -> ptext SLIT("fmr"),
2199 pprInstr (CMP sz reg ri) = hcat [
2215 pprInstr (CMPL sz reg ri) = hcat [
2231 pprInstr (BCC cond (BlockId id)) = hcat [
2238 where lbl = mkAsmTempLabel id
2240 pprInstr (BCCFAR cond (BlockId id)) = vcat [
2243 pprCond (condNegate cond),
2247 ptext SLIT("\tb\t"),
2251 where lbl = mkAsmTempLabel id
2253 pprInstr (JMP lbl) = hcat [ -- an alias for b that takes a CLabel
2260 pprInstr (MTCTR reg) = hcat [
2262 ptext SLIT("mtctr"),
2266 pprInstr (BCTR _) = hcat [
2270 pprInstr (BL lbl _) = hcat [
2271 ptext SLIT("\tbl\t"),
2274 pprInstr (BCTRL _) = hcat [
2278 pprInstr (ADD reg1 reg2 ri) = pprLogic SLIT("add") reg1 reg2 ri
2279 pprInstr (ADDIS reg1 reg2 imm) = hcat [
2281 ptext SLIT("addis"),
2290 pprInstr (ADDC reg1 reg2 reg3) = pprLogic SLIT("addc") reg1 reg2 (RIReg reg3)
2291 pprInstr (ADDE reg1 reg2 reg3) = pprLogic SLIT("adde") reg1 reg2 (RIReg reg3)
2292 pprInstr (SUBF reg1 reg2 reg3) = pprLogic SLIT("subf") reg1 reg2 (RIReg reg3)
2293 pprInstr (MULLW reg1 reg2 ri@(RIReg _)) = pprLogic SLIT("mullw") reg1 reg2 ri
2294 pprInstr (MULLW reg1 reg2 ri@(RIImm _)) = pprLogic SLIT("mull") reg1 reg2 ri
2295 pprInstr (DIVW reg1 reg2 reg3) = pprLogic SLIT("divw") reg1 reg2 (RIReg reg3)
2296 pprInstr (DIVWU reg1 reg2 reg3) = pprLogic SLIT("divwu") reg1 reg2 (RIReg reg3)
2298 pprInstr (MULLW_MayOflo reg1 reg2 reg3) = vcat [
2299 hcat [ ptext SLIT("\tmullwo\t"), pprReg reg1, ptext SLIT(", "),
2300 pprReg reg2, ptext SLIT(", "),
2302 hcat [ ptext SLIT("\tmfxer\t"), pprReg reg1 ],
2303 hcat [ ptext SLIT("\trlwinm\t"), pprReg reg1, ptext SLIT(", "),
2304 pprReg reg1, ptext SLIT(", "),
2305 ptext SLIT("2, 31, 31") ]
2308 -- for some reason, "andi" doesn't exist.
2309 -- we'll use "andi." instead.
2310 pprInstr (AND reg1 reg2 (RIImm imm)) = hcat [
2312 ptext SLIT("andi."),
2320 pprInstr (AND reg1 reg2 ri) = pprLogic SLIT("and") reg1 reg2 ri
2322 pprInstr (OR reg1 reg2 ri) = pprLogic SLIT("or") reg1 reg2 ri
2323 pprInstr (XOR reg1 reg2 ri) = pprLogic SLIT("xor") reg1 reg2 ri
2325 pprInstr (XORIS reg1 reg2 imm) = hcat [
2327 ptext SLIT("xoris"),
2336 pprInstr (EXTS sz reg1 reg2) = hcat [
2346 pprInstr (NEG reg1 reg2) = pprUnary SLIT("neg") reg1 reg2
2347 pprInstr (NOT reg1 reg2) = pprUnary SLIT("not") reg1 reg2
2349 pprInstr (SLW reg1 reg2 ri) = pprLogic SLIT("slw") reg1 reg2 (limitShiftRI ri)
2350 pprInstr (SRW reg1 reg2 ri) = pprLogic SLIT("srw") reg1 reg2 (limitShiftRI ri)
2351 pprInstr (SRAW reg1 reg2 ri) = pprLogic SLIT("sraw") reg1 reg2 (limitShiftRI ri)
2352 pprInstr (RLWINM reg1 reg2 sh mb me) = hcat [
2353 ptext SLIT("\trlwinm\t"),
2365 pprInstr (FADD sz reg1 reg2 reg3) = pprBinaryF SLIT("fadd") sz reg1 reg2 reg3
2366 pprInstr (FSUB sz reg1 reg2 reg3) = pprBinaryF SLIT("fsub") sz reg1 reg2 reg3
2367 pprInstr (FMUL sz reg1 reg2 reg3) = pprBinaryF SLIT("fmul") sz reg1 reg2 reg3
2368 pprInstr (FDIV sz reg1 reg2 reg3) = pprBinaryF SLIT("fdiv") sz reg1 reg2 reg3
2369 pprInstr (FNEG reg1 reg2) = pprUnary SLIT("fneg") reg1 reg2
2371 pprInstr (FCMP reg1 reg2) = hcat [
2373 ptext SLIT("fcmpu\tcr0, "),
2374 -- Note: we're using fcmpu, not fcmpo
2375 -- The difference is with fcmpo, compare with NaN is an invalid operation.
2376 -- We don't handle invalid fp ops, so we don't care
2382 pprInstr (FCTIWZ reg1 reg2) = pprUnary SLIT("fctiwz") reg1 reg2
2383 pprInstr (FRSP reg1 reg2) = pprUnary SLIT("frsp") reg1 reg2
2385 pprInstr (CRNOR dst src1 src2) = hcat [
2386 ptext SLIT("\tcrnor\t"),
2394 pprInstr (MFCR reg) = hcat [
2401 pprInstr (MFLR reg) = hcat [
2408 pprInstr (FETCHPC reg) = vcat [
2409 ptext SLIT("\tbcl\t20,31,1f"),
2410 hcat [ ptext SLIT("1:\tmflr\t"), pprReg reg ]
2413 pprInstr LWSYNC = ptext SLIT("\tlwsync")
2415 pprInstr _ = panic "pprInstr (ppc)"
2417 pprLogic op reg1 reg2 ri = hcat [
2422 RIImm _ -> char 'i',
2431 pprUnary op reg1 reg2 = hcat [
2440 pprBinaryF op sz reg1 reg2 reg3 = hcat [
2453 pprRI (RIReg r) = pprReg r
2454 pprRI (RIImm r) = pprImm r
2456 pprFSize F64 = empty
2457 pprFSize F32 = char 's'
2459 -- limit immediate argument for shift instruction to range 0..32
2460 -- (yes, the maximum is really 32, not 31)
2461 limitShiftRI :: RI -> RI
2462 limitShiftRI (RIImm (ImmInt i)) | i > 32 || i < 0 = RIImm (ImmInt 32)
2465 #endif /* powerpc_TARGET_ARCH */
2468 -- -----------------------------------------------------------------------------
2469 -- Converting floating-point literals to integrals for printing
2471 castFloatToWord8Array :: STUArray s Int Float -> ST s (STUArray s Int Word8)
2472 castFloatToWord8Array = castSTUArray
2474 castDoubleToWord8Array :: STUArray s Int Double -> ST s (STUArray s Int Word8)
2475 castDoubleToWord8Array = castSTUArray
2477 -- floatToBytes and doubleToBytes convert to the host's byte
2478 -- order. Providing that we're not cross-compiling for a
2479 -- target with the opposite endianness, this should work ok
2482 -- ToDo: this stuff is very similar to the shenanigans in PprAbs,
2483 -- could they be merged?
2485 floatToBytes :: Float -> [Int]
2488 arr <- newArray_ ((0::Int),3)
2490 arr <- castFloatToWord8Array arr
2491 i0 <- readArray arr 0
2492 i1 <- readArray arr 1
2493 i2 <- readArray arr 2
2494 i3 <- readArray arr 3
2495 return (map fromIntegral [i0,i1,i2,i3])
2498 doubleToBytes :: Double -> [Int]
2501 arr <- newArray_ ((0::Int),7)
2503 arr <- castDoubleToWord8Array arr
2504 i0 <- readArray arr 0
2505 i1 <- readArray arr 1
2506 i2 <- readArray arr 2
2507 i3 <- readArray arr 3
2508 i4 <- readArray arr 4
2509 i5 <- readArray arr 5
2510 i6 <- readArray arr 6
2511 i7 <- readArray arr 7
2512 return (map fromIntegral [i0,i1,i2,i3,i4,i5,i6,i7])