| 1 | /* |
| 2 | * Copyright (C) 2015-2023 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->alist = NULL; |
| 58 | #elif __mips__ |
| 59 | _jitc->function->alist = NULL; |
| 60 | #endif |
| 61 | _jitc->function->self.argi = |
| 62 | _jitc->function->self.argf = _jitc->function->self.argn = 0; |
| 63 | _jitc->tail = _jitc->function->prolog; |
| 64 | node = _jitc->tail->next; |
| 65 | _jitc->tail->next = (jit_node_t *)0; |
| 66 | _jitc->tail->link = (jit_node_t *)0; |
| 67 | for (; node; node = next) { |
| 68 | next = node->next; |
| 69 | switch (node->code) { |
| 70 | case jit_code_arg_c: case jit_code_arg_s: |
| 71 | case jit_code_arg_i: case jit_code_arg_l: |
| 72 | node->next = (jit_node_t *)0; |
| 73 | jit_make_arg(node, node->code); |
| 74 | break; |
| 75 | case jit_code_arg_f: |
| 76 | node->next = (jit_node_t *)0; |
| 77 | jit_make_arg_f(node); |
| 78 | break; |
| 79 | case jit_code_arg_d: |
| 80 | node->next = (jit_node_t *)0; |
| 81 | jit_make_arg_d(node); |
| 82 | break; |
| 83 | case jit_code_getarg_c: |
| 84 | jit_getarg_c(node->u.w, node->v.n); |
| 85 | next = free_synth_list(node); |
| 86 | break; |
| 87 | case jit_code_getarg_uc: |
| 88 | jit_getarg_uc(node->u.w, node->v.n); |
| 89 | next = free_synth_list(node); |
| 90 | break; |
| 91 | case jit_code_getarg_s: |
| 92 | jit_getarg_s(node->u.w, node->v.n); |
| 93 | next = free_synth_list(node); |
| 94 | break; |
| 95 | case jit_code_getarg_us: |
| 96 | jit_getarg_us(node->u.w, node->v.n); |
| 97 | next = free_synth_list(node); |
| 98 | break; |
| 99 | case jit_code_getarg_i: |
| 100 | jit_getarg_i(node->u.w, node->v.n); |
| 101 | next = free_synth_list(node); |
| 102 | break; |
| 103 | case jit_code_getarg_f: |
| 104 | jit_getarg_f(node->u.w, node->v.n); |
| 105 | next = free_synth_list(node); |
| 106 | break; |
| 107 | case jit_code_getarg_d: |
| 108 | jit_getarg_d(node->u.w, node->v.n); |
| 109 | next = free_synth_list(node); |
| 110 | break; |
| 111 | case jit_code_putargr: |
| 112 | jit_putargr(node->u.w, node->v.n); |
| 113 | next = free_synth_list(node); |
| 114 | break; |
| 115 | case jit_code_putargi: |
| 116 | jit_putargi(node->u.w, node->v.n); |
| 117 | next = free_synth_list(node); |
| 118 | break; |
| 119 | case jit_code_putargr_f: |
| 120 | jit_putargr_f(node->u.w, node->v.n); |
| 121 | next = free_synth_list(node); |
| 122 | break; |
| 123 | case jit_code_putargi_f: |
| 124 | jit_putargi_f(node->u.f, node->v.n); |
| 125 | next = free_synth_list(node); |
| 126 | break; |
| 127 | case jit_code_putargr_d: |
| 128 | jit_putargr_d(node->u.w, node->v.n); |
| 129 | next = free_synth_list(node); |
| 130 | break; |
| 131 | case jit_code_putargi_d: |
| 132 | jit_putargi_d(node->u.d, node->v.n); |
| 133 | next = free_synth_list(node); |
| 134 | break; |
| 135 | default: |
| 136 | node->next = (jit_node_t *)0; |
| 137 | link_node(node); |
| 138 | break; |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | static void |
| 144 | _rewind_prepare(jit_state_t *_jit) |
| 145 | { |
| 146 | jit_node_t *node; |
| 147 | jit_node_t *next; |
| 148 | _jitc->function->call.argi = |
| 149 | _jitc->function->call.argf = |
| 150 | _jitc->function->call.size = 0; |
| 151 | _jitc->tail = _jitc->prepare; |
| 152 | node = _jitc->tail->next; |
| 153 | _jitc->tail->next = (jit_node_t *)0; |
| 154 | _jitc->tail->link = (jit_node_t *)0; |
| 155 | for (; node; node = next) { |
| 156 | next = node->next; |
| 157 | switch (node->code) { |
| 158 | case jit_code_pushargr: |
| 159 | jit_pushargr(node->u.w); |
| 160 | next = free_synth_list(node); |
| 161 | break; |
| 162 | case jit_code_pushargi: |
| 163 | jit_pushargi(node->u.w); |
| 164 | next = free_synth_list(node); |
| 165 | break; |
| 166 | case jit_code_pushargr_f: |
| 167 | jit_pushargr_f(node->u.w); |
| 168 | next = free_synth_list(node); |
| 169 | break; |
| 170 | case jit_code_pushargi_f: |
| 171 | jit_pushargi_f(node->u.f); |
| 172 | next = free_synth_list(node); |
| 173 | break; |
| 174 | case jit_code_pushargr_d: |
| 175 | jit_pushargr_d(node->u.w); |
| 176 | next = free_synth_list(node); |
| 177 | break; |
| 178 | case jit_code_pushargi_d: |
| 179 | jit_pushargi_d(node->u.d); |
| 180 | next = free_synth_list(node); |
| 181 | break; |
| 182 | default: |
| 183 | node->next = (jit_node_t *)0; |
| 184 | link_node(node); |
| 185 | break; |
| 186 | } |
| 187 | } |
| 188 | } |
| 189 | #endif |