Fix prologues/epilogues to deal with the lack of predecrement/postincrement...
Fix prologues/epilogues to deal with the lack of predecrement/postincrement addressing modes in the coldfire moveml instruction. From-SVN: r13724
This commit is contained in:
Richard Kenner
parent
14499ba4f3
commit
e82673c4a8
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@ -1,5 +1,5 @@
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/* libgcc1 routines for 68000 w/o floating-point hardware.
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Copyright (C) 1994, 1996 Free Software Foundation, Inc.
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Copyright (C) 1994, 1996, 1997 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -214,7 +214,11 @@ TRUNCDFSF = 7
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| void __clear_sticky_bits(void);
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SYM (__clear_sticky_bit):
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lea SYM (_fpCCR),a0
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#ifndef __mcf5200__
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movew IMM (0),a0@(STICK)
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#else
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clr.w a0@(STICK)
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#endif
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rts
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|=============================================================================
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@ -280,7 +284,13 @@ $_exception_handler:
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beq 1f | no, exit
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pea SYM (_fpCCR) | yes, push address of _fpCCR
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trap IMM (FPTRAP) | and trap
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#ifndef __mcf5200__
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1: moveml sp@+,d2-d7 | restore data registers
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#else
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1: moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 | and return
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rts
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#endif /* L_floatex */
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@ -362,8 +372,8 @@ L6: movel sp@+, d2
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/* Coldfire implementation of non-restoring division algorithm from
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Hennessy & Patterson, Appendix A. */
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link a6,IMM (0)
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moveml d2-d4,sp@-
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link a6,IMM (-12)
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moveml d2-d4,sp@
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movel a6@(8),d0
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movel a6@(12),d1
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clrl d2 | clear p
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@ -593,8 +603,13 @@ SYM (__subdf3):
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| double __adddf3(double, double);
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SYM (__adddf3):
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#ifndef __mcf5200__
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link a6,IMM (0) | everything will be done in registers
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moveml d2-d7,sp@- | save all data registers and a2 (but d0-d1)
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movel a6@(8),d0 | get first operand
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movel a6@(12),d1 |
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movel a6@(16),d2 | get second operand
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@ -673,7 +688,9 @@ Ladddf$2:
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#ifndef __mcf5200__
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moveml a2-a3,sp@- | save the address registers
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#else
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moveml a2-a4,sp@- | save the address registers
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movel a2,sp@-
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movel a3,sp@-
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movel a4,sp@-
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#endif
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movel d4,a2 | save the exponents
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@ -956,7 +973,9 @@ Ladddf$4:
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#ifndef __mcf5200__
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moveml sp@+,a2-a3
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#else
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moveml sp@+,a2-a4
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movel sp@+,a4
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movel sp@+,a3
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movel sp@+,a2
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#endif
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| Before rounding normalize so bit #DBL_MANT_DIG is set (we will consider
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@ -1062,7 +1081,9 @@ Lsubdf$0:
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#ifndef __mcf5200__
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moveml sp@+,a2-a3 |
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#else
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moveml sp@+,a2-a4 |
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movel sp@+,a4
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movel sp@+,a3
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movel sp@+,a2
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#endif
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| Before rounding normalize so bit #DBL_MANT_DIG is set (we will consider
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@ -1133,13 +1154,21 @@ Ladddf$a$small:
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#ifndef __mcf5200__
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moveml sp@+,a2-a3
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#else
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moveml sp@+,a2-a4
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movel sp@+,a4
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movel sp@+,a3
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movel sp@+,a2
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#endif
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movel a6@(16),d0
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movel a6@(20),d1
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | restore data registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 | and return
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rts
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@ -1147,13 +1176,21 @@ Ladddf$b$small:
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#ifndef __mcf5200__
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moveml sp@+,a2-a3
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#else
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moveml sp@+,a2-a4
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movel sp@+,a4
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movel sp@+,a3
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movel sp@+,a2
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#endif
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movel a6@(8),d0
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movel a6@(12),d1
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | restore data registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 | and return
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rts
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@ -1193,14 +1230,26 @@ Ladddf$a:
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bra Ld$infty |
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Ladddf$ret$1:
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#ifndef __mcf5200__
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moveml sp@+,a2-a3 | restore regs and exit
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#else
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movel sp@+,a4
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movel sp@+,a3
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movel sp@+,a2
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#endif
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Ladddf$ret:
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| Normal exit.
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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orl d7,d0 | put sign bit back
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#ifndef __mcf5200__
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moveml sp@+,d2-d7
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6
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rts
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@ -1272,8 +1321,13 @@ Ladddf$nf:
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| double __muldf3(double, double);
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SYM (__muldf3):
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#ifndef __mcf5200__
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link a6,IMM (0)
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moveml d2-d7,sp@-
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movel a6@(8),d0 | get a into d0-d1
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movel a6@(12),d1 |
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movel a6@(16),d2 | and b into d2-d3
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@ -1346,7 +1400,9 @@ Lmuldf$2: |
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#ifndef __mcf5200__
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moveml a2-a3,sp@- | save a2 and a3 for temporary use
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#else
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moveml a2-a4,sp@-
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movel a2,sp@-
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movel a3,sp@-
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movel a4,sp@-
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#endif
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movel IMM (0),a2 | a2 is a null register
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movel d4,a3 | and a3 will preserve the exponent
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@ -1440,7 +1496,9 @@ Lmuldf$2: |
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#ifndef __mcf5200__
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moveml sp@+,a2-a3
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#else
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moveml sp@+,a2-a4
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movel sp@+,a4
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movel sp@+,a3
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movel sp@+,a2
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#endif
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| Now we have the product in d0-d1-d2-d3, with bit 8 of d0 set. The
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@ -1546,7 +1604,13 @@ Lmuldf$a$0:
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bge Ld$inop | in case NaN or +/-INFINITY return NaN
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6
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rts
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@ -1589,8 +1653,13 @@ Lmuldf$b$den:
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| double __divdf3(double, double);
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SYM (__divdf3):
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#ifndef __mcf5200__
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link a6,IMM (0)
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moveml d2-d7,sp@-
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movel a6@(8),d0 | get a into d0-d1
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movel a6@(12),d1 |
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movel a6@(16),d2 | and b into d2-d3
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@ -1820,7 +1889,13 @@ Ldivdf$a$0:
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movel d0,d1 |
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lea SYM (_fpCCR),a0 | clear exception flags
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movew IMM (0),a0@ |
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 |
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#else
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moveml sp@,d2-d7 |
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 |
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rts |
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@ -2003,7 +2078,13 @@ Lround$0:
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6
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rts
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@ -2013,8 +2094,13 @@ Lround$0:
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| double __negdf2(double, double);
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SYM (__negdf2):
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#ifndef __mcf5200__
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link a6,IMM (0)
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moveml d2-d7,sp@-
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movew IMM (NEGATE),d5
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movel a6@(8),d0 | get number to negate in d0-d1
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movel a6@(12),d1 |
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@ -2034,7 +2120,13 @@ SYM (__negdf2):
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bra Ld$infty
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1: lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6
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rts
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2: bclr IMM (31),d0
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@ -2050,8 +2142,13 @@ EQUAL = 0
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| int __cmpdf2(double, double);
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SYM (__cmpdf2):
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#ifndef __mcf5200__
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link a6,IMM (0)
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moveml d2-d7,sp@- | save registers
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movew IMM (COMPARE),d5
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movel a6@(8),d0 | get first operand
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movel a6@(12),d1 |
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@ -2112,17 +2209,35 @@ Lcmpdf$1:
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bne Lcmpdf$a$gt$b | |b| < |a|
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| If we got here a == b.
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movel IMM (EQUAL),d0
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | put back the registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6
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rts
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Lcmpdf$a$gt$b:
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movel IMM (GREATER),d0
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | put back the registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6
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rts
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Lcmpdf$b$gt$a:
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movel IMM (LESS),d0
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | put back the registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6
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rts
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@ -2368,8 +2483,13 @@ SYM (__subsf3):
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| float __addsf3(float, float);
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SYM (__addsf3):
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#ifndef __mcf5200__
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link a6,IMM (0) | everything will be done in registers
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moveml d2-d7,sp@- | save all data registers but d0-d1
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movel a6@(8),d0 | get first operand
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movel a6@(12),d1 | get second operand
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movel d0,d6 | get d0's sign bit '
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@ -2708,7 +2828,13 @@ Laddsf$a$small:
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movel a6@(12),d0
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | restore data registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 | and return
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rts
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@ -2716,7 +2842,13 @@ Laddsf$b$small:
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movel a6@(8),d0
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | restore data registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 | and return
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rts
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@ -2768,7 +2900,13 @@ Laddsf$ret:
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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orl d7,d0 | put sign bit
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 | restore data registers
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 | and return
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rts
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@ -2829,8 +2967,13 @@ Laddsf$nf:
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| float __mulsf3(float, float);
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SYM (__mulsf3):
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#ifndef __mcf5200__
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link a6,IMM (0)
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moveml d2-d7,sp@-
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movel a6@(8),d0 | get a into d0
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movel a6@(12),d1 | and b into d1
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movel d0,d7 | d7 will hold the sign of the product
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@ -2992,7 +3135,13 @@ Lmulsf$a$0:
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bge Lf$inop | if b is +/-INFINITY or NaN return NaN
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lea SYM (_fpCCR),a0 | else return zero
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movew IMM (0),a0@ |
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 |
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#else
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moveml sp@,d2-d7
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 |
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rts |
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@ -3032,8 +3181,13 @@ Lmulsf$b$den:
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| float __divsf3(float, float);
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SYM (__divsf3):
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#ifndef __mcf5200__
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link a6,IMM (0)
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moveml d2-d7,sp@-
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#else
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link a6,IMM (-24)
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moveml d2-d7,sp@
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#endif
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movel a6@(8),d0 | get a into d0
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movel a6@(12),d1 | and b into d1
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movel d0,d7 | d7 will hold the sign of the result
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@ -3181,7 +3335,13 @@ Ldivsf$a$0:
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movel IMM (0),d0 | else return zero
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lea SYM (_fpCCR),a0 |
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movew IMM (0),a0@ |
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#ifndef __mcf5200__
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moveml sp@+,d2-d7 |
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#else
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moveml sp@,d2-d7 |
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| XXX if frame pointer is ever removed, stack pointer must
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| be adjusted here.
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#endif
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unlk a6 |
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rts |
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@ -3327,7 +3487,13 @@ Lround$0:
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lea SYM (_fpCCR),a0
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movew IMM (0),a0@
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#ifndef __mcf5200__
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moveml sp@+,d2-d7
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#else
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moveml sp@,d2-d7
|
||||
| XXX if frame pointer is ever removed, stack pointer must
|
||||
| be adjusted here.
|
||||
#endif
|
||||
unlk a6
|
||||
rts
|
||||
|
||||
|
|
@ -3340,8 +3506,13 @@ Lround$0:
|
|||
|
||||
| float __negsf2(float);
|
||||
SYM (__negsf2):
|
||||
#ifndef __mcf5200__
|
||||
link a6,IMM (0)
|
||||
moveml d2-d7,sp@-
|
||||
#else
|
||||
link a6,IMM (-24)
|
||||
moveml d2-d7,sp@
|
||||
#endif
|
||||
movew IMM (NEGATE),d5
|
||||
movel a6@(8),d0 | get number to negate in d0
|
||||
bchg IMM (31),d0 | negate
|
||||
|
|
@ -3357,7 +3528,13 @@ SYM (__negsf2):
|
|||
bra Lf$infty
|
||||
1: lea SYM (_fpCCR),a0
|
||||
movew IMM (0),a0@
|
||||
#ifndef __mcf5200__
|
||||
moveml sp@+,d2-d7
|
||||
#else
|
||||
moveml sp@,d2-d7
|
||||
| XXX if frame pointer is ever removed, stack pointer must
|
||||
| be adjusted here.
|
||||
#endif
|
||||
unlk a6
|
||||
rts
|
||||
2: bclr IMM (31),d0
|
||||
|
|
@ -3373,8 +3550,13 @@ EQUAL = 0
|
|||
|
||||
| int __cmpsf2(float, float);
|
||||
SYM (__cmpsf2):
|
||||
#ifndef __mcf5200__
|
||||
link a6,IMM (0)
|
||||
moveml d2-d7,sp@- | save registers
|
||||
#else
|
||||
link a6,IMM (-24)
|
||||
moveml d2-d7,sp@
|
||||
#endif
|
||||
movew IMM (COMPARE),d5
|
||||
movel a6@(8),d0 | get first operand
|
||||
movel a6@(12),d1 | get second operand
|
||||
|
|
@ -3420,17 +3602,33 @@ Lcmpsf$2:
|
|||
bne Lcmpsf$a$gt$b | |b| < |a|
|
||||
| If we got here a == b.
|
||||
movel IMM (EQUAL),d0
|
||||
#ifndef __mcf5200__
|
||||
moveml sp@+,d2-d7 | put back the registers
|
||||
#else
|
||||
moveml sp@,d2-d7
|
||||
#endif
|
||||
unlk a6
|
||||
rts
|
||||
Lcmpsf$a$gt$b:
|
||||
movel IMM (GREATER),d0
|
||||
#ifndef __mcf5200__
|
||||
moveml sp@+,d2-d7 | put back the registers
|
||||
#else
|
||||
moveml sp@,d2-d7
|
||||
| XXX if frame pointer is ever removed, stack pointer must
|
||||
| be adjusted here.
|
||||
#endif
|
||||
unlk a6
|
||||
rts
|
||||
Lcmpsf$b$gt$a:
|
||||
movel IMM (LESS),d0
|
||||
#ifndef __mcf5200__
|
||||
moveml sp@+,d2-d7 | put back the registers
|
||||
#else
|
||||
moveml sp@,d2-d7
|
||||
| XXX if frame pointer is ever removed, stack pointer must
|
||||
| be adjusted here.
|
||||
#endif
|
||||
unlk a6
|
||||
rts
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue