| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* PLT trampolines. m68k version. |
| 2 | Copyright (C) 2005-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <sysdep.h> |
| 20 | |
| 21 | #if !defined (__mcoldfire__) |
| 22 | # define FMOVE fmove.x |
| 23 | # define FPSPACE 12 |
| 24 | #elif defined (__mcffpu__) |
| 25 | # define FMOVE fmove.d |
| 26 | # define FPSPACE 8 |
| 27 | #else |
| 28 | # define FPSPACE 0 |
| 29 | #endif |
| 30 | |
| 31 | .text |
| 32 | .globl _dl_runtime_resolve |
| 33 | .type _dl_runtime_resolve, @function |
| 34 | _dl_runtime_resolve: |
| 35 | cfi_startproc |
| 36 | cfi_adjust_cfa_offset (8) |
| 37 | | Save %a0 (struct return address) and %a1. |
| 38 | move.l %a0, -(%sp) |
| 39 | cfi_adjust_cfa_offset (4) |
| 40 | move.l %a1, -(%sp) |
| 41 | cfi_adjust_cfa_offset (4) |
| 42 | | Call the real address resolver. |
| 43 | jbsr _dl_fixup |
| 44 | | Restore register %a0 and %a1. |
| 45 | move.l (%sp)+, %a1 |
| 46 | cfi_adjust_cfa_offset (-4) |
| 47 | move.l (%sp)+, %a0 |
| 48 | cfi_adjust_cfa_offset (-4) |
| 49 | | Pop parameters |
| 50 | addq.l #8, %sp |
| 51 | cfi_adjust_cfa_offset (-8) |
| 52 | | Call real function. |
| 53 | #ifdef __mcoldfire__ |
| 54 | move.l %d0,-(%sp) |
| 55 | cfi_adjust_cfa_offset (4) |
| 56 | rts |
| 57 | #else |
| 58 | jmp (%d0) |
| 59 | #endif |
| 60 | cfi_endproc |
| 61 | .size _dl_runtime_resolve, . - _dl_runtime_resolve |
| 62 | |
| 63 | .text |
| 64 | .globl _dl_runtime_profile |
| 65 | .type _dl_runtime_profile, @function |
| 66 | _dl_runtime_profile: |
| 67 | cfi_startproc |
| 68 | cfi_adjust_cfa_offset (8) |
| 69 | pea 8(%sp) |
| 70 | cfi_adjust_cfa_offset (4) |
| 71 | move.l %a1, -(%sp) |
| 72 | cfi_adjust_cfa_offset (4) |
| 73 | move.l %a0, -(%sp) |
| 74 | cfi_adjust_cfa_offset (4) |
| 75 | pea -1.w |
| 76 | cfi_adjust_cfa_offset (4) |
| 77 | | Push parameters for _dl_profile_fixup |
| 78 | pea (%sp) |
| 79 | cfi_adjust_cfa_offset (4) |
| 80 | pea 8(%sp) |
| 81 | cfi_adjust_cfa_offset (4) |
| 82 | move.l 32(%sp), -(%sp) |
| 83 | cfi_adjust_cfa_offset (4) |
| 84 | move.l 32(%sp), -(%sp) |
| 85 | cfi_adjust_cfa_offset (4) |
| 86 | move.l 32(%sp), -(%sp) |
| 87 | cfi_adjust_cfa_offset (4) |
| 88 | subq.l #8, %sp |
| 89 | cfi_adjust_cfa_offset (8) |
| 90 | | Call the real address resolver. |
| 91 | jbsr _dl_profile_fixup |
| 92 | | Pop parameters |
| 93 | lea 28(%sp), %sp |
| 94 | cfi_adjust_cfa_offset (-28) |
| 95 | move.l (%sp), %d1 |
| 96 | jpl 1f |
| 97 | addq.l #4, %sp |
| 98 | cfi_adjust_cfa_offset (-4) |
| 99 | | Restore register %a0 and %a1. |
| 100 | move.l (%sp)+, %a0 |
| 101 | cfi_adjust_cfa_offset (-4) |
| 102 | move.l (%sp)+, %a1 |
| 103 | cfi_adjust_cfa_offset (-4) |
| 104 | lea 12(%sp), %sp |
| 105 | cfi_adjust_cfa_offset (-12) |
| 106 | | Call real function. |
| 107 | #ifdef __mcoldfire__ |
| 108 | move.l %d0,-(%sp) |
| 109 | cfi_adjust_cfa_offset (4) |
| 110 | rts |
| 111 | #else |
| 112 | jmp (%d0) |
| 113 | #endif |
| 114 | |
| 115 | /* |
| 116 | +24 return address |
| 117 | +20 PLT1 |
| 118 | +16 PLT2 |
| 119 | +12 %sp |
| 120 | +8 %a1 |
| 121 | +4 %a0 |
| 122 | %sp free |
| 123 | */ |
| 124 | #ifdef __mcoldfire__ |
| 125 | cfi_adjust_cfa_offset (20) |
| 126 | #else |
| 127 | cfi_adjust_cfa_offset (24) |
| 128 | #endif |
| 129 | 1: move.l %a2, (%sp) |
| 130 | cfi_rel_offset (%a2, 0) |
| 131 | move.l %sp, %a2 |
| 132 | move.l %sp, %a0 |
| 133 | lea 28(%sp), %a1 |
| 134 | | Round framesize up to longword alignment |
| 135 | addq.l #3, %d1 |
| 136 | and.l #-3, %d1 |
| 137 | sub.l %d1, %a0 |
| 138 | move.l %a0, %sp |
| 139 | cfi_def_cfa_register (%a2) |
| 140 | #ifdef __mcoldfire__ |
| 141 | tst.l %d1 |
| 142 | beq 2f |
| 143 | 1: move.l (%a1)+, (%a0)+ |
| 144 | subq.l #4,%d1 |
| 145 | bne 1b |
| 146 | 2: |
| 147 | #else |
| 148 | lsr.l #2,%d1 |
| 149 | jra 2f |
| 150 | 1: move.l (%a1)+, (%a0)+ |
| 151 | 2: dbra %d1,1b |
| 152 | #endif |
| 153 | /* |
| 154 | %a2+24 return address |
| 155 | %a2+20 PLT1 |
| 156 | %a2+16 PLT2 |
| 157 | %a2+12 %sp |
| 158 | %a2+8 %a1 |
| 159 | %a2+4 %a0 |
| 160 | %a2 %a2 |
| 161 | %sp copied stack frame |
| 162 | */ |
| 163 | |
| 164 | move.l 4(%a2), %a0 |
| 165 | move.l 8(%a2), %a1 |
| 166 | #ifdef __mcoldfire__ |
| 167 | pea 2f(%pc) |
| 168 | move.l %d0,-(%sp) |
| 169 | rts |
| 170 | 2: |
| 171 | #else |
| 172 | jsr (%d0) |
| 173 | #endif |
| 174 | move.l %a2, %sp |
| 175 | cfi_def_cfa_register (%sp) |
| 176 | move.l (%sp)+, %a2 |
| 177 | cfi_adjust_cfa_offset (4) |
| 178 | cfi_restore (%a2) |
| 179 | /* |
| 180 | +20 return address |
| 181 | +16 PLT1 |
| 182 | +12 PLT2 |
| 183 | +8 %sp |
| 184 | +4 %a1 |
| 185 | %sp %a0 |
| 186 | */ |
| 187 | #ifdef FMOVE |
| 188 | FMOVE %fp0, -(%sp) |
| 189 | cfi_adjust_cfa_offset (FPSPACE) |
| 190 | #endif |
| 191 | move.l %a0, -(%sp) |
| 192 | cfi_adjust_cfa_offset (4) |
| 193 | move.l %d1, -(%sp) |
| 194 | cfi_adjust_cfa_offset (4) |
| 195 | move.l %d0, -(%sp) |
| 196 | cfi_adjust_cfa_offset (4) |
| 197 | pea (%sp) |
| 198 | cfi_adjust_cfa_offset (4) |
| 199 | pea (16+FPSPACE)(%sp) |
| 200 | cfi_adjust_cfa_offset (4) |
| 201 | move.l (32+FPSPACE)(%sp), -(%sp) |
| 202 | cfi_adjust_cfa_offset (4) |
| 203 | move.l (32+FPSPACE)(%sp), -(%sp) |
| 204 | cfi_adjust_cfa_offset (4) |
| 205 | jbsr _dl_call_pltexit |
| 206 | lea 16(%sp), %sp |
| 207 | cfi_adjust_cfa_offset (-16) |
| 208 | move.l (%sp)+, %d0 |
| 209 | cfi_adjust_cfa_offset (-4) |
| 210 | move.l (%sp)+, %d1 |
| 211 | cfi_adjust_cfa_offset (-4) |
| 212 | move.l (%sp)+, %a0 |
| 213 | cfi_adjust_cfa_offset (-4) |
| 214 | #ifdef FMOVE |
| 215 | FMOVE (%sp)+, %fp0 |
| 216 | cfi_adjust_cfa_offset (-FPSPACE) |
| 217 | #endif |
| 218 | lea 20(%sp), %sp |
| 219 | cfi_adjust_cfa_offset (-20) |
| 220 | rts |
| 221 | cfi_endproc |
| 222 | .size _dl_runtime_profile, . - _dl_runtime_profile |