| 1 | extern int target_flags; |
| 2 | |
| 3 | enum reg_class |
| 4 | { |
| 5 | NO_REGS, |
| 6 | AREG, DREG, CREG, BREG, |
| 7 | Q_REGS, |
| 8 | SIREG, DIREG, |
| 9 | INDEX_REGS, |
| 10 | GENERAL_REGS, |
| 11 | FP_TOP_REG, FP_SECOND_REG, |
| 12 | FLOAT_REGS, |
| 13 | ALL_REGS, LIM_REG_CLASSES |
| 14 | }; |
| 15 | extern enum reg_class regclass_map[17 ]; |
| 16 | |
| 17 | |
| 18 | extern struct rtx_def *i386_compare_op0, *i386_compare_op1; |
| 19 | extern struct rtx_def *(*i386_compare_gen)(), *(*i386_compare_gen_eq)(); |
| 20 | extern char *hi_reg_name[]; |
| 21 | extern char *qi_reg_name[]; |
| 22 | extern char *qi_high_reg_name[]; |
| 23 | |
| 24 | enum machine_mode { |
| 25 | VOIDmode , |
| 26 | QImode , |
| 27 | HImode , |
| 28 | PSImode , |
| 29 | SImode , |
| 30 | PDImode , |
| 31 | DImode , |
| 32 | TImode , |
| 33 | OImode , |
| 34 | QFmode , |
| 35 | HFmode , |
| 36 | SFmode , |
| 37 | DFmode , |
| 38 | XFmode , |
| 39 | TFmode , |
| 40 | SCmode , |
| 41 | DCmode , |
| 42 | XCmode , |
| 43 | TCmode , |
| 44 | CQImode , |
| 45 | CHImode , |
| 46 | CSImode , |
| 47 | CDImode , |
| 48 | CTImode , |
| 49 | COImode , |
| 50 | BLKmode , |
| 51 | CCmode , |
| 52 | CCFPEQmode , |
| 53 | MAX_MACHINE_MODE }; |
| 54 | extern char *mode_name[]; |
| 55 | enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC, |
| 56 | MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS}; |
| 57 | extern enum mode_class mode_class[]; |
| 58 | extern int mode_size[]; |
| 59 | extern int mode_unit_size[]; |
| 60 | extern enum machine_mode mode_wider_mode[]; |
| 61 | extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int) ; |
| 62 | extern enum machine_mode get_best_mode (int, int, int, enum machine_mode, int) ; |
| 63 | extern enum machine_mode class_narrowest_mode[]; |
| 64 | extern enum machine_mode byte_mode; |
| 65 | extern enum machine_mode word_mode; |
| 66 | typedef int ptrdiff_t; |
| 67 | typedef unsigned int size_t; |
| 68 | typedef short unsigned int wchar_t; |
| 69 | typedef unsigned int UQItype __attribute__ ((mode (QI))); |
| 70 | typedef int SItype __attribute__ ((mode (SI))); |
| 71 | typedef unsigned int USItype __attribute__ ((mode (SI))); |
| 72 | typedef int DItype __attribute__ ((mode (DI))); |
| 73 | typedef unsigned int UDItype __attribute__ ((mode (DI))); |
| 74 | typedef float SFtype __attribute__ ((mode (SF))); |
| 75 | typedef float DFtype __attribute__ ((mode (DF))); |
| 76 | typedef int word_type __attribute__ ((mode (SI))); |
| 77 | struct DIstruct {SItype low, high;}; |
| 78 | typedef union |
| 79 | { |
| 80 | struct DIstruct s; |
| 81 | DItype ll; |
| 82 | } DIunion; |
| 83 | extern DItype __fixunssfdi (SFtype a); |
| 84 | extern DItype __fixunsdfdi (DFtype a); |
| 85 | USItype |
| 86 | __udiv_w_sdiv (rp, a1, a0, d) |
| 87 | USItype *rp, a1, a0, d; |
| 88 | { |
| 89 | USItype q, r; |
| 90 | USItype c0, c1, b1; |
| 91 | if ((SItype) d >= 0) |
| 92 | { |
| 93 | if (a1 < d - a1 - (a0 >> ((sizeof (SItype) * 8 ) - 1))) |
| 94 | { |
| 95 | |
| 96 | sdiv_qrnnd (q, r, a1, a0, d); |
| 97 | } |
| 98 | else |
| 99 | { |
| 100 | |
| 101 | __asm__ ("subl %5,%1 |
| 102 | sbbl %3,%0" : "=r" ((USItype)( c1 )), "=&r" ((USItype)( c0 )) : "0" ((USItype)( a1 )), "g" ((USItype)( d >> 1 )), "1" ((USItype)( a0 )), "g" ((USItype)( d << ((sizeof (SItype) * 8 ) - 1) ))) ; |
| 103 | |
| 104 | sdiv_qrnnd (q, r, c1, c0, d); |
| 105 | |
| 106 | q += (USItype) 1 << ((sizeof (SItype) * 8 ) - 1); |
| 107 | } |
| 108 | } |
| 109 | else |
| 110 | { |
| 111 | b1 = d >> 1; |
| 112 | c1 = a1 >> 1; |
| 113 | c0 = (a1 << ((sizeof (SItype) * 8 ) - 1)) + (a0 >> 1); |
| 114 | if (a1 < b1) |
| 115 | { |
| 116 | sdiv_qrnnd (q, r, c1, c0, b1); |
| 117 | r = 2*r + (a0 & 1); |
| 118 | if ((d & 1) != 0) |
| 119 | { |
| 120 | if (r >= q) |
| 121 | r = r - q; |
| 122 | else if (q - r <= d) |
| 123 | { |
| 124 | r = r - q + d; |
| 125 | q--; |
| 126 | } |
| 127 | else |
| 128 | { |
| 129 | r = r - q + 2*d; |
| 130 | q -= 2; |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | else if (c1 < b1) |
| 135 | { |
| 136 | c1 = (b1 - 1) - c1; |
| 137 | c0 = ~c0; |
| 138 | sdiv_qrnnd (q, r, c1, c0, b1); |
| 139 | q = ~q; |
| 140 | r = (b1 - 1) - r; |
| 141 | r = 2*r + (a0 & 1); |
| 142 | if ((d & 1) != 0) |
| 143 | { |
| 144 | if (r >= q) |
| 145 | r = r - q; |
| 146 | else if (q - r <= d) |
| 147 | { |
| 148 | r = r - q + d; |
| 149 | q--; |
| 150 | } |
| 151 | else |
| 152 | { |
| 153 | r = r - q + 2*d; |
| 154 | q -= 2; |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | else |
| 159 | { |
| 160 | if (a0 >= -d) |
| 161 | { |
| 162 | q = -1; |
| 163 | r = a0 + d; |
| 164 | } |
| 165 | else |
| 166 | { |
| 167 | q = -2; |
| 168 | r = a0 + 2*d; |
| 169 | } |
| 170 | } |
| 171 | } |
| 172 | *rp = r; |
| 173 | return q; |
| 174 | } |