| 1 | /* |
| 2 | * Copyright (C) 2015-2019 Free Software Foundation, Inc. |
| 3 | * |
| 4 | * This file is part of GNU lightning. |
| 5 | * |
| 6 | * GNU lightning is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU Lesser General Public License as published |
| 8 | * by the Free Software Foundation; either version 3, or (at your option) |
| 9 | * any later version. |
| 10 | * |
| 11 | * GNU lightning is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| 14 | * License for more details. |
| 15 | * |
| 16 | * Authors: |
| 17 | * Paulo Cesar Pereira de Andrade |
| 18 | */ |
| 19 | |
| 20 | #include <lightning.h> |
| 21 | #include <lightning/jit_private.h> |
| 22 | |
| 23 | #if PROTO |
| 24 | # define free_synth_list(node) _free_synth_list(_jit,node) |
| 25 | static jit_node_t *_free_synth_list(jit_state_t*,jit_node_t*); |
| 26 | #define rewind_prolog() _rewind_prolog(_jit) |
| 27 | static void _rewind_prolog(jit_state_t*); |
| 28 | #define rewind_prepare() _rewind_prepare(_jit) |
| 29 | static void _rewind_prepare(jit_state_t*); |
| 30 | #endif |
| 31 | |
| 32 | #if CODE |
| 33 | /* |
| 34 | * Implementation |
| 35 | */ |
| 36 | static jit_node_t * |
| 37 | _free_synth_list(jit_state_t *_jit, jit_node_t *node) |
| 38 | { |
| 39 | jit_node_t *next; |
| 40 | next = node->next; |
| 41 | free_node(node); |
| 42 | for (node = next; node && (node->flag & jit_flag_synth); node = next) { |
| 43 | next = node->next; |
| 44 | free_node(node); |
| 45 | } |
| 46 | return (next); |
| 47 | } |
| 48 | |
| 49 | static void |
| 50 | _rewind_prolog(jit_state_t *_jit) |
| 51 | { |
| 52 | jit_node_t *node; |
| 53 | jit_node_t *next; |
| 54 | _jitc->function->self.size = stack_framesize; |
| 55 | #if __arm__ |
| 56 | assert(jit_cpu.abi); |
| 57 | _jitc->function->self.size += 64; |
| 58 | #endif |
| 59 | #if __mips__ && NEW_ABI |
| 60 | /* Only add extra stack space if there are varargs |
| 61 | * arguments in registers. */ |
| 62 | assert(jit_arg_reg_p(_jitc->function->self.argi)); |
| 63 | _jitc->function->self.size += 64; |
| 64 | #endif |
| 65 | _jitc->function->self.argi = |
| 66 | _jitc->function->self.argf = _jitc->function->self.argn = 0; |
| 67 | _jitc->tail = _jitc->function->prolog; |
| 68 | node = _jitc->tail->next; |
| 69 | _jitc->tail->next = (jit_node_t *)0; |
| 70 | _jitc->tail->link = (jit_node_t *)0; |
| 71 | for (; node; node = next) { |
| 72 | next = node->next; |
| 73 | switch (node->code) { |
| 74 | case jit_code_arg: |
| 75 | node->next = (jit_node_t *)0; |
| 76 | jit_make_arg(node); |
| 77 | break; |
| 78 | case jit_code_arg_f: |
| 79 | node->next = (jit_node_t *)0; |
| 80 | jit_make_arg_f(node); |
| 81 | break; |
| 82 | case jit_code_arg_d: |
| 83 | node->next = (jit_node_t *)0; |
| 84 | jit_make_arg_d(node); |
| 85 | break; |
| 86 | case jit_code_getarg_c: |
| 87 | jit_getarg_c(node->u.w, node->v.n); |
| 88 | next = free_synth_list(node); |
| 89 | break; |
| 90 | case jit_code_getarg_uc: |
| 91 | jit_getarg_uc(node->u.w, node->v.n); |
| 92 | next = free_synth_list(node); |
| 93 | break; |
| 94 | case jit_code_getarg_s: |
| 95 | jit_getarg_s(node->u.w, node->v.n); |
| 96 | next = free_synth_list(node); |
| 97 | break; |
| 98 | case jit_code_getarg_us: |
| 99 | jit_getarg_us(node->u.w, node->v.n); |
| 100 | next = free_synth_list(node); |
| 101 | break; |
| 102 | case jit_code_getarg_i: |
| 103 | jit_getarg_i(node->u.w, node->v.n); |
| 104 | next = free_synth_list(node); |
| 105 | break; |
| 106 | case jit_code_getarg_f: |
| 107 | jit_getarg_f(node->u.w, node->v.n); |
| 108 | next = free_synth_list(node); |
| 109 | break; |
| 110 | case jit_code_getarg_d: |
| 111 | jit_getarg_d(node->u.w, node->v.n); |
| 112 | next = free_synth_list(node); |
| 113 | break; |
| 114 | case jit_code_putargr: |
| 115 | jit_putargr(node->u.w, node->v.n); |
| 116 | next = free_synth_list(node); |
| 117 | break; |
| 118 | case jit_code_putargi: |
| 119 | jit_putargi(node->u.w, node->v.n); |
| 120 | next = free_synth_list(node); |
| 121 | break; |
| 122 | case jit_code_putargr_f: |
| 123 | jit_putargr_f(node->u.w, node->v.n); |
| 124 | next = free_synth_list(node); |
| 125 | break; |
| 126 | case jit_code_putargi_f: |
| 127 | jit_putargi_f(node->u.f, node->v.n); |
| 128 | next = free_synth_list(node); |
| 129 | break; |
| 130 | case jit_code_putargr_d: |
| 131 | jit_putargr_d(node->u.w, node->v.n); |
| 132 | next = free_synth_list(node); |
| 133 | break; |
| 134 | case jit_code_putargi_d: |
| 135 | jit_putargi_d(node->u.d, node->v.n); |
| 136 | next = free_synth_list(node); |
| 137 | break; |
| 138 | default: |
| 139 | node->next = (jit_node_t *)0; |
| 140 | link_node(node); |
| 141 | break; |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | static void |
| 147 | _rewind_prepare(jit_state_t *_jit) |
| 148 | { |
| 149 | jit_node_t *node; |
| 150 | jit_node_t *next; |
| 151 | _jitc->function->call.argi = |
| 152 | _jitc->function->call.argf = |
| 153 | _jitc->function->call.size = 0; |
| 154 | _jitc->tail = _jitc->prepare; |
| 155 | node = _jitc->tail->next; |
| 156 | _jitc->tail->next = (jit_node_t *)0; |
| 157 | _jitc->tail->link = (jit_node_t *)0; |
| 158 | for (; node; node = next) { |
| 159 | next = node->next; |
| 160 | switch (node->code) { |
| 161 | case jit_code_pushargr: |
| 162 | jit_pushargr(node->u.w); |
| 163 | next = free_synth_list(node); |
| 164 | break; |
| 165 | case jit_code_pushargi: |
| 166 | jit_pushargi(node->u.w); |
| 167 | next = free_synth_list(node); |
| 168 | break; |
| 169 | case jit_code_pushargr_f: |
| 170 | jit_pushargr_f(node->u.w); |
| 171 | next = free_synth_list(node); |
| 172 | break; |
| 173 | case jit_code_pushargi_f: |
| 174 | jit_pushargi_f(node->u.f); |
| 175 | next = free_synth_list(node); |
| 176 | break; |
| 177 | case jit_code_pushargr_d: |
| 178 | jit_pushargr_d(node->u.w); |
| 179 | next = free_synth_list(node); |
| 180 | break; |
| 181 | case jit_code_pushargi_d: |
| 182 | jit_pushargi_d(node->u.d); |
| 183 | next = free_synth_list(node); |
| 184 | break; |
| 185 | default: |
| 186 | node->next = (jit_node_t *)0; |
| 187 | link_node(node); |
| 188 | break; |
| 189 | } |
| 190 | } |
| 191 | } |
| 192 | #endif |