| 1 | /* Copyright (C) 2009 Clozure Associates */ |
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| 2 | /* Copyright (C) 1994-2001 Digitool, Inc */ |
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| 3 | /* This file is part of Clozure CL. */ |
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| 4 | |
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| 5 | /* Clozure CL is licensed under the terms of the Lisp Lesser GNU Public */ |
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| 6 | /* License , known as the LLGPL and distributed with Clozure CL as the */ |
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| 7 | /* file "LICENSE". The LLGPL consists of a preamble and the LGPL, */ |
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| 8 | /* which is distributed with Clozure CL as the file "LGPL". Where these */ |
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| 9 | /* conflict, the preamble takes precedence. */ |
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| 10 | |
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| 11 | /* Clozure CL is referenced in the preamble as the "LIBRARY." */ |
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| 12 | |
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| 13 | /* The LLGPL is also available online at */ |
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| 14 | /* http://opensource.franz.com/preamble.html */ |
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| 15 | |
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| 16 | /* The assembler has to do the arithmetic here: the expression */ |
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| 17 | /* may not be evaluable by m4. */ |
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| 18 | |
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| 19 | |
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| 20 | |
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| 21 | |
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| 22 | /* dnode_align(dest,src,delta) */ |
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| 23 | define(`dnode_align',` |
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| 24 | __(add $1,[$2,#(dnode_size-1)]) |
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| 25 | __(bic $1,$1,#((1<<dnode_align_bits)-1)) |
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| 26 | ') |
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| 27 | |
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| 28 | define(`extract_fulltag',` |
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| 29 | __(and $1,$1,#((1<<ntagbits)-1)) |
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| 30 | ') |
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| 31 | |
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| 32 | define(`extract_lisptag',` |
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| 33 | __(and $1,$1,#((1<<nlisptagbits)-1)) |
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| 34 | ') |
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| 35 | |
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| 36 | define(`extract_lisptag_',` |
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| 37 | __(ands $1,$1,#((1<<nlisptagbits)-1)) |
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| 38 | ') |
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| 39 | |
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| 40 | define(`extract_subtag',` |
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| 41 | __(ldrb $1,[$2,#misc_subtag_offset]) |
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| 42 | ') |
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| 43 | |
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| 44 | |
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| 45 | define(`extract_lowbyte',` |
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| 46 | __(and $1,$2,#((1<<num_subtag_bits)-1)) |
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| 47 | ') |
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| 48 | |
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| 49 | define(`extract_header',` |
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| 50 | __(ldr $1,[$2,#misc_header_offset]) |
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| 51 | ') |
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| 52 | |
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| 53 | define(`extract_typecode',` |
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| 54 | __(extract_lisptag($1,$2)) |
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| 55 | __(cmp $1,#fulltag_misc) |
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| 56 | __(ldrbeq $1,[$2,#misc_subtag_offset]) |
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| 57 | ') |
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| 58 | |
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| 59 | define(`box_fixnum',` |
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| 60 | __(mov #1,$2, lsl #fixnumshift) |
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| 61 | ') |
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| 62 | |
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| 63 | define(`unbox_fixnum',` |
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| 64 | __(mov $1,$2, asr #fixnumshift) |
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| 65 | ') |
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| 66 | |
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| 67 | define(`loaddf',` |
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| 68 | __(lfd $1,dfloat.value($2))') |
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| 69 | |
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| 70 | define(`storedf',` |
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| 71 | __(stfd $1,dfloat.value($2)) |
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| 72 | ') |
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| 73 | |
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| 74 | define(`push1',` |
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| 75 | __(str $1,[$2,#-node_size]!) |
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| 76 | ') |
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| 77 | |
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| 78 | /* Generally not a great idea. */ |
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| 79 | define(`pop1',` |
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| 80 | __(ldr $1,[$2],#node_size) |
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| 81 | ') |
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| 82 | |
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| 83 | define(`vpush1',` |
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| 84 | __(push1($1,vsp)) |
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| 85 | ') |
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| 86 | |
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| 87 | define(`vpop1',` |
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| 88 | __(pop1($1,vsp)) |
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| 89 | ') |
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| 90 | |
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| 91 | |
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| 92 | define(`unlink',` |
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| 93 | __(ldr($1,0($1))) |
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| 94 | ') |
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| 95 | |
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| 96 | |
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| 97 | define(`set_nargs',` |
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| 98 | __(lwi(nargs,($1)<<fixnumshift)) |
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| 99 | ') |
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| 100 | |
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| 101 | define(`bitclr',` |
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| 102 | __(rlwinm $1,$2,0,0x1f&((31-($3))+1),0x1f&((31-($3))-1)) |
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| 103 | ') |
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| 104 | |
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| 105 | |
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| 106 | define(`vref32',` |
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| 107 | __(ldr #1,[$2,#misc_data_offset+(($3)<<2)]) |
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| 108 | ') |
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| 109 | |
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| 110 | define(`vref16',`/* dest,src,n*/ |
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| 111 | __(lhz $1,misc_data_offset+(($3)<<1)($2)) |
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| 112 | ') |
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| 113 | |
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| 114 | define(`vrefr',` |
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| 115 | __(vref32($1,$2,$3)) |
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| 116 | ') |
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| 117 | |
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| 118 | |
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| 119 | |
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| 120 | |
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| 121 | define(`getvheader',` |
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| 122 | __(ldr($1,vector.header($2))) |
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| 123 | ') |
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| 124 | |
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| 125 | |
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| 126 | /* "Length" is fixnum element count */ |
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| 127 | define(`header_length',` |
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| 128 | mov $1,#-1<<fixnumshift |
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| 129 | and $1,$1,$2,lsr #num_subtag_bits-fixnumshift |
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| 130 | ') |
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| 131 | ') |
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| 132 | |
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| 133 | |
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| 134 | define(`vector_length',` |
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| 135 | __(getvheader($3,$2)) |
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| 136 | __(header_length($1,$3)) |
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| 137 | ') |
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| 138 | |
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| 139 | |
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| 140 | define(`ref_global',` |
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| 141 | __(ldr($1,lisp_globals.$2(0))) |
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| 142 | ') |
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| 143 | |
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| 144 | define(`set_global',` |
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| 145 | __(str($1,lisp_globals.$2(0))) |
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| 146 | ') |
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| 147 | |
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| 148 | define(`ref_nrs_value',` |
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| 149 | __(ldr($1,((nrs.$2)+(symbol.vcell))(0))) |
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| 150 | ') |
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| 151 | |
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| 152 | define(`set_nrs_value',` |
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| 153 | __(str($1,((nrs.$2)+(symbol.vcell))(0))) |
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| 154 | ') |
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| 155 | |
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| 156 | define(`extract_unsigned_byte_bits',` |
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| 157 | ifdef(`PPC64',` |
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| 158 | __(rldicr $1,$2,64-fixnumshift,63-$3) |
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| 159 | ',` |
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| 160 | __(rlwinm $1,$2,0,32-fixnumshift,31-($3+fixnumshift)) |
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| 161 | ') |
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| 162 | ') |
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| 163 | |
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| 164 | define(`extract_unsigned_byte_bits_',` |
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| 165 | ifdef(`PPC64',` |
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| 166 | __(rldicr. $1,$2,64-fixnumshift,63-$3) |
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| 167 | ',` |
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| 168 | __(rlwinm. $1,$2,0,32-fixnumshift,31-($3+fixnumshift)) |
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| 169 | ') |
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| 170 | ') |
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| 171 | |
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| 172 | /* vpop argregs - nargs is known to be non-zero */ |
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| 173 | define(`vpop_argregs_nz',` |
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| 174 | __(cmp nargs,#node_size*2) |
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| 175 | __(vpop1(arg_z)) |
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| 176 | __(ldrhs arg_y,[vsp],#node_size) |
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| 177 | __(ldrhi arg_x,[vsp],#node_size) |
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| 178 | ') |
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| 179 | |
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| 180 | |
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| 181 | /* vpush argregs */ |
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| 182 | define(`vpush_argregs',` |
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| 183 | new_macro_labels() |
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| 184 | __(cmplri(cr0,nargs,0)) |
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| 185 | __(cmplri(cr1,nargs,node_size*2)) |
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| 186 | __(beq cr0,macro_label(done)) |
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| 187 | __(blt cr1,macro_label(z)) |
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| 188 | __(beq cr1,macro_label(yz)) |
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| 189 | __(vpush(arg_x)) |
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| 190 | macro_label(yz): |
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| 191 | __(vpush(arg_y)) |
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| 192 | macro_label(z): |
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| 193 | __(vpush(arg_z)) |
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| 194 | macro_label(done): |
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| 195 | ') |
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| 196 | |
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| 197 | define(`create_lisp_frame',` |
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| 198 | __(stru(sp,-lisp_frame.size(sp))) |
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| 199 | ') |
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| 200 | |
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| 201 | |
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| 202 | define(`build_lisp_frame',` |
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| 203 | create_lisp_frame() |
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| 204 | __(str(ifelse($1,`',fn,$1),lisp_frame.savefn(sp))) |
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| 205 | __(str(ifelse($2,`',loc_pc,$2),lisp_frame.savelr(sp))) |
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| 206 | __(str(ifelse($3,`',vsp,$3),lisp_frame.savevsp(sp))) |
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| 207 | ') |
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| 208 | |
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| 209 | |
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| 210 | define(`discard_lisp_frame',` |
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| 211 | __(la sp,lisp_frame.size(sp)) |
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| 212 | ') |
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| 213 | |
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| 214 | |
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| 215 | define(`_car',` |
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| 216 | __(ldr $1,[$2,#cons.car]) |
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| 217 | ') |
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| 218 | |
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| 219 | define(`_cdr',` |
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| 220 | __(ldr $1,[$2,#cons.cdr]) |
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| 221 | ') |
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| 222 | |
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| 223 | define(`_rplaca',` |
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| 224 | __(str $2,[$1,#cons.car]) |
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| 225 | ') |
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| 226 | |
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| 227 | define(`_rplacd',` |
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| 228 | __(str $2,[$1,#cons.cdr]) |
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| 229 | ') |
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| 230 | |
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| 231 | |
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| 232 | define(`trap_unless_lisptag_equal',` |
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| 233 | __(extract_lisptag($3,$1)) |
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| 234 | __(trnei($3,$2)) |
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| 235 | ') |
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| 236 | |
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| 237 | define(`trap_unless_list',` |
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| 238 | __(trap_unless_lisptag_equal($1,tag_list,$2)) |
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| 239 | ') |
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| 240 | |
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| 241 | define(`trap_unless_fulltag_equal',` |
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| 242 | __(extract_fulltag($3,$1)) |
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| 243 | __(trnei($3,$2)) |
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| 244 | ') |
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| 245 | |
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| 246 | define(`trap_unless_typecode_equal',` |
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| 247 | __(extract_typecode($3,$1)) |
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| 248 | __(trnei($3,$2)) |
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| 249 | ') |
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| 250 | |
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| 251 | /* "jump" to the code-vector of the function in nfn. */ |
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| 252 | define(`jump_nfn',` |
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| 253 | __(ldr pc,[nfn,#_function.codevector]) |
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| 254 | ') |
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| 255 | |
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| 256 | /* "call the code-vector of the function in nfn. */ |
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| 257 | define(`call_nfn',` |
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| 258 | __(ldr lr,[nfn,#_function.codevector]) |
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| 259 | __(blx lr) |
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| 260 | ') |
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| 261 | |
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| 262 | |
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| 263 | /* "jump" to the function in fnames function cell. */ |
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| 264 | define(`jump_fname',` |
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| 265 | __(ldr nfn,[fname,#symbol.fcell]) |
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| 266 | __(jump_nfn()) |
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| 267 | ') |
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| 268 | |
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| 269 | /* call the function in fnames function cell. */ |
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| 270 | define(`call_fname',` |
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| 271 | __(ldr nfn,[fname,#symbol.fcell]) |
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| 272 | __(call_nfn()) |
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| 273 | ') |
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| 274 | |
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| 275 | define(`funcall_nfn',` |
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| 276 | __(extract_typecode(imm0,nfn)) |
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| 277 | __(cmp imm0,#subtag_symbol) |
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| 278 | __(moveq fname,nfn) |
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| 279 | __(ldreq nfn,[fname,#symbol.fcell]) |
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| 280 | __(cmpne imm0,#subtag_function) |
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| 281 | __(ldreq pc,[nfn,#_function.entrypoint]) |
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| 282 | __(uuo_error_cant_call(nfn,al)) |
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| 283 | |
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| 284 | ') |
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| 285 | |
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| 286 | define(`mkcatch',` |
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| 287 | __(mflr loc_pc) |
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| 288 | __(ldr(imm0,tcr.catch_top(rcontext))) |
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| 289 | __(lwz imm1,0(loc_pc)) /* a forward branch to the catch/unwind cleanup */ |
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| 290 | __(rlwinm imm1,imm1,0,6,29) /* extract LI */ |
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| 291 | __(add loc_pc,loc_pc,imm1) |
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| 292 | __(build_lisp_frame(fn,loc_pc,vsp)) |
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| 293 | __(sub loc_pc,loc_pc,imm1) |
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| 294 | __(la loc_pc,4(loc_pc)) /* skip over the forward branch */ |
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| 295 | __(mtlr loc_pc) |
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| 296 | __(lwi(imm4,(catch_frame.element_count<<num_subtag_bits)|subtag_catch_frame)) |
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| 297 | __(ldr(imm3,tcr.xframe(rcontext))) |
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| 298 | __(ldr(imm1,tcr.db_link(rcontext))) |
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| 299 | __(TSP_Alloc_Fixed_Unboxed(catch_frame.size)) |
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| 300 | __(la nargs,tsp_frame.data_offset+fulltag_misc(tsp)) |
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| 301 | __(str(imm4,catch_frame.header(nargs))) |
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| 302 | __(str(arg_z,catch_frame.catch_tag(nargs))) |
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| 303 | __(str(imm0,catch_frame.link(nargs))) |
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| 304 | __(str(imm2,catch_frame.mvflag(nargs))) |
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| 305 | __(str(sp,catch_frame.csp(nargs))) |
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| 306 | __(str(imm1,catch_frame.db_link(nargs))) |
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| 307 | __(str(first_nvr,catch_frame.regs+0*node_size(nargs))) |
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| 308 | __(str(second_nvr,catch_frame.regs+1*node_size(nargs))) |
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| 309 | __(str(third_nvr,catch_frame.regs+2*node_size(nargs))) |
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| 310 | __(str(fourth_nvr,catch_frame.regs+3*node_size(nargs))) |
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| 311 | __(str(fifth_nvr,catch_frame.regs+4*node_size(nargs))) |
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| 312 | __(str(sixth_nvr,catch_frame.regs+5*node_size(nargs))) |
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| 313 | __(str(seventh_nvr,catch_frame.regs+6*node_size(nargs))) |
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| 314 | __(str(eighth_nvr,catch_frame.regs+7*node_size(nargs))) |
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| 315 | __(str(imm3,catch_frame.xframe(nargs))) |
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| 316 | __(str(rzero,catch_frame.tsp_segment(nargs))) |
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| 317 | __(Set_TSP_Frame_Boxed()) |
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| 318 | __(str(nargs,tcr.catch_top(rcontext))) |
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| 319 | __(li nargs,0) |
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| 320 | |
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| 321 | ') |
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| 322 | |
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| 323 | |
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| 324 | |
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| 325 | define(`check_stack_alignment',` |
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| 326 | new_macro_labels() |
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| 327 | __(andi. $1,sp,STACK_ALIGN_MASK) |
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| 328 | __(beq+ macro_label(stack_ok)) |
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| 329 | __(.long 0) |
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| 330 | macro_label(stack_ok): |
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| 331 | ') |
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| 332 | |
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| 333 | define(`stack_align',`((($1)+STACK_ALIGN_MASK)&~STACK_ALIGN_MASK)') |
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| 334 | |
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| 335 | define(`clear_alloc_tag',` |
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| 336 | __(bic allocptr,allocptr,#fulltagmask) |
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| 337 | ') |
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| 338 | |
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| 339 | define(`Cons',` |
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| 340 | __(ldr allocbase,[rcontext,#tcr.save_allocbase]) |
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| 341 | __(add allocptr,allocptr,#-cons.size+fulltag_cons) |
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| 342 | __(cmp allocptr,allocbase) |
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| 343 | __(uuo_alloc_trap(lo)) |
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| 344 | __(str $3,[allocptr,#cons.cdr]) |
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| 345 | __(str $2,[allocptr,#cons.car]) |
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| 346 | __(mov $1,allocptr) |
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| 347 | __(clear_alloc_tag()) |
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| 348 | ') |
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| 349 | |
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| 350 | |
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| 351 | /* This is probably only used once or twice in the entire kernel, but */ |
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| 352 | /* I wanted a place to describe the constraints on the mechanism. */ |
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| 353 | |
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| 354 | /* Those constaints are (not surprisingly) similar to those which apply */ |
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| 355 | /* to cons cells, except for the fact that the header (and any length */ |
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| 356 | /* field that might describe large arrays) has to have been stored in */ |
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| 357 | /* the object if the trap has succeeded on entry to the GC. It follows */ |
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| 358 | /* that storing the register containing the header must immediately */ |
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| 359 | /* follow the allocation trap (and an auxiliary length register must */ |
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| 360 | /* be stored immediately after the header.) Successfully falling */ |
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| 361 | /* through the trap must emulate any header initialization: it would */ |
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| 362 | /* be a bad idea to have allocptr pointing to a zero header ... */ |
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| 363 | |
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| 364 | |
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| 365 | |
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| 366 | /* Parameters: */ |
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| 367 | |
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| 368 | /* $1 = dest reg */ |
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| 369 | /* $2 = header. (For now, assume that this always encodes length ; */ |
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| 370 | /* that may change with "large vector" support.) */ |
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| 371 | /* $3 = register containing size in bytes. (We're going to subtract */ |
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| 372 | /* fulltag_misc from this; do it in the macro body, rather than force the |
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| 373 | /* (1 ?) caller to do it. */ |
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| 374 | |
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| 375 | |
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| 376 | define(`Misc_Alloc',` |
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| 377 | __(la $3,-fulltag_misc($3)) |
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| 378 | __(sub allocptr,allocptr,$3) |
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| 379 | __(alloc_trap()) |
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| 380 | __(str($2,misc_header_offset(allocptr))) |
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| 381 | __(mr $1,allocptr) |
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| 382 | __(clear_alloc_tag()) |
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| 383 | ') |
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| 384 | |
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| 385 | /* Parameters $1, $2 as above; $3 = physical size constant. */ |
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| 386 | define(`Misc_Alloc_Fixed',` |
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| 387 | __(la allocptr,(-$3)+fulltag_misc(allocptr)) |
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| 388 | __(alloc_trap()) |
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| 389 | __(str($2,misc_header_offset(allocptr))) |
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| 390 | __(mr $1,allocptr) |
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| 391 | __(clear_alloc_tag()) |
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| 392 | ') |
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| 393 | |
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| 394 | |
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| 395 | /* Zero $3 bytes worth of doublewords, starting at offset $2 relative */ |
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| 396 | /* to the base register $1. */ |
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| 397 | |
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| 398 | |
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| 399 | ifdef(`DARWIN',` |
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| 400 | .macro zero_doublewords |
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| 401 | .if $2 |
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| 402 | stfd fp_zero,$1($0) |
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| 403 | zero_doublewords $0,$1+8,$2-8 |
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| 404 | .endif |
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| 405 | .endmacro |
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| 406 | ') |
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| 407 | |
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| 408 | ifdef(`LINUX',` |
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| 409 | .macro zero_doublewords base,disp,nbytes |
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| 410 | .if \nbytes |
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| 411 | stfd fp_zero,\disp(\base) |
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| 412 | zero_doublewords \base,\disp+8,\nbytes-8 |
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| 413 | .endif |
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| 414 | .endm |
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| 415 | ') |
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| 416 | |
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| 417 | define(`Set_TSP_Frame_Unboxed',` |
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| 418 | __(str(tsp,tsp_frame.type(tsp))) |
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| 419 | ') |
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| 420 | |
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| 421 | define(`Set_TSP_Frame_Boxed',` |
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| 422 | __(str(rzero,tsp_frame.type(tsp))) |
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| 423 | ') |
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| 424 | |
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| 425 | /* A newly allocated TSP frame is always "raw" (has non-zero type, indicating */ |
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| 426 | /* that it doesn't contain tagged data. */ |
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| 427 | |
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| 428 | define(`TSP_Alloc_Fixed_Unboxed',` |
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| 429 | __(stru(tsp,-($1+tsp_frame.data_offset)(tsp))) |
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| 430 | __(Set_TSP_Frame_Unboxed()) |
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| 431 | ') |
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| 432 | |
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| 433 | define(`TSP_Alloc_Fixed_Unboxed_Zeroed',` |
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| 434 | __(TSP_Alloc_Fixed_Unboxed($1)) |
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| 435 | __(zero_doublewords tsp,tsp_frame.fixed_overhead,$1) |
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| 436 | ') |
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| 437 | |
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| 438 | define(`TSP_Alloc_Fixed_Boxed',` |
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| 439 | __(TSP_Alloc_Fixed_Unboxed_Zeroed($1)) |
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| 440 | __(Set_TSP_Frame_Boxed()) |
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| 441 | ') |
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| 442 | |
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| 443 | |
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| 444 | |
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| 445 | |
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| 446 | |
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| 447 | /* This assumes that the backpointer points to the first byte beyond */ |
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| 448 | /* each frame. If we allow segmented tstacks, that constraint might */ |
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| 449 | /* complicate their implementation. */ |
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| 450 | /* We don't need to know the size of the frame (positive or negative, */ |
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| 451 | /* with or without header). $1 and $2 are temp registers, $3 is an */ |
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| 452 | /* optional CR field. */ |
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| 453 | |
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| 454 | |
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| 455 | /* Handle the general case, where the frame might be empty */ |
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| 456 | define(`Zero_TSP_Frame',` |
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| 457 | __(new_macro_labels()) |
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| 458 | __(la $1,tsp_frame.size-8(tsp)) |
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| 459 | __(ldr($2,tsp_frame.backlink(tsp))) |
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| 460 | __(la $2,-8($2)) |
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| 461 | __(b macro_label(zero_tsp_test)) |
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| 462 | macro_label(zero_tsp_loop): |
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| 463 | __(stfdu fp_zero,8($1)) |
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| 464 | macro_label(zero_tsp_test): |
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| 465 | __(cmpr(ifelse($3,`',`cr0',$3),$1,$2)) |
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| 466 | __(bne ifelse($3,`',`cr0',$3),macro_label(zero_tsp_loop)) |
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| 467 | ') |
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| 468 | |
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| 469 | /* Save some branching when we know that the frame can't be empty.*/ |
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| 470 | define(`Zero_TSP_Frame_nz',` |
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| 471 | new_macro_labels() |
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| 472 | __(la $1,tsp_frame.size-8(tsp)) |
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| 473 | __(ldr($2,tsp_frame.backlink(tsp))) |
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| 474 | __(la $2,-8($2)) |
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| 475 | macro_label(zero_tsp_loop): |
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| 476 | __(stfdu fp_zero,8($1)) |
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| 477 | __(cmpr(ifelse($3,`',`cr0',$3),$1,$2)) |
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| 478 | __(bne ifelse($3,`',`cr0',$3),macro_label(zero_tsp_loop)) |
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| 479 | ') |
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| 480 | |
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| 481 | /* $1 = 8-byte-aligned size, positive. $2 (optiional) set */ |
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| 482 | /* to negated size. */ |
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| 483 | define(`TSP_Alloc_Var_Unboxed',` |
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| 484 | __(neg ifelse($2,`',$1,$2),$1) |
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| 485 | __(strux(tsp,tsp,ifelse($2,`',$1,$2))) |
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| 486 | __(Set_TSP_Frame_Unboxed()) |
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| 487 | ') |
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| 488 | |
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| 489 | define(`TSP_Alloc_Var_Boxed',` |
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| 490 | __(TSP_Alloc_Var_Unboxed($1)) |
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| 491 | __(Zero_TSP_Frame($1,$2)) |
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| 492 | __(Set_TSP_Frame_Boxed()) |
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| 493 | ') |
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| 494 | |
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| 495 | |
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| 496 | define(`TSP_Alloc_Var_Boxed_nz',` |
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| 497 | __(TSP_Alloc_Var_Unboxed($1)) |
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| 498 | __(Zero_TSP_Frame_nz($1,$2)) |
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| 499 | __(Set_TSP_Frame_Boxed()) |
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| 500 | ') |
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| 501 | |
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| 502 | define(`check_pending_interrupt',` |
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| 503 | new_macro_labels() |
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| 504 | __(ldr(nargs,tcr.tlb_pointer(rcontext))) |
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| 505 | __(ldr(nargs,INTERRUPT_LEVEL_BINDING_INDEX(nargs))) |
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| 506 | __(cmpri(ifelse($1,`',`cr0',$1),nargs,0)) |
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| 507 | __(blt ifelse($1,`',`cr0',$1),macro_label(done)) |
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| 508 | __(bgt ifelse($1,`',`cr0',$1),macro_label(trap)) |
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| 509 | __(ldr(nargs,tcr.interrupt_pending(rcontext))) |
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| 510 | macro_label(trap): |
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| 511 | __(trgti(nargs,0)) |
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| 512 | macro_label(done): |
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| 513 | ') |
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| 514 | |
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| 515 | /* $1 = ndigits. Assumes 4-byte digits */ |
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| 516 | define(`aligned_bignum_size',`((~(dnode_size-1)&(node_size+(dnode_size-1)+(4*$1))))') |
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| 517 | |
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| 518 | define(`suspend_now',` |
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| 519 | __(uuo_interr(error_propagate_suspend,rzero)) |
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| 520 | ') |
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