git.m6w6.name Git - m6w6/ext-psi/blob - src/libjit.c

   1 #include "php.h"
   2 #include "php_psi.h"
   3 #include "libjit.h"
   4
   5 #include <jit/jit.h>
   6
   7 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data);
   8
   9 static inline jit_abi_t psi_jit_abi(const char *convention) {
  10         return jit_abi_cdecl;
  11 }
  12 static inline jit_type_t psi_jit_type(token_t t) {
  13         switch (t) {
  14         default:
  15                 ZEND_ASSERT(0);
  16                 /* no break */
  17         case PSI_T_VOID:
  18                 return jit_type_void;
  19         case PSI_T_INT8:
  20                 return jit_type_sbyte;
  21         case PSI_T_UINT8:
  22                 return jit_type_ubyte;
  23         case PSI_T_INT16:
  24                 return jit_type_short;
  25         case PSI_T_UINT16:
  26                 return jit_type_ushort;
  27         case PSI_T_INT32:
  28                 return jit_type_int;
  29         case PSI_T_UINT32:
  30                 return jit_type_uint;
  31         case PSI_T_INT64:
  32                 return jit_type_long;
  33         case PSI_T_UINT64:
  34                 return jit_type_ulong;
  35         case PSI_T_BOOL:
  36                 return jit_type_sys_bool;
  37         case PSI_T_INT:
  38                 return jit_type_sys_int;
  39         case PSI_T_FLOAT:
  40                 return jit_type_sys_float;
  41         case PSI_T_DOUBLE:
  42                 return jit_type_sys_double;
  43         }
  44 }
  45 static inline jit_type_t psi_jit_decl_type(decl_type *type) {
  46         return psi_jit_type(real_decl_type(type)->type);
  47 }
  48 static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
  49         if (darg->var->pointer_level) {
  50                 return jit_type_void_ptr;
  51         } else {
  52                 return psi_jit_decl_type(darg->type);
  53         }
  54 }
  55
  56 typedef struct PSI_LibjitContext {
  57         jit_context_t jit;
  58         jit_type_t signature;
  59         struct {
  60                 struct PSI_LibjitData **list;
  61                 size_t count;
  62         } data;
  63 } PSI_LibjitContext;
  64
  65 typedef struct PSI_LibjitData {
  66         PSI_LibjitContext *context;
  67         impl *impl;
  68         zend_internal_arg_info *arginfo;
  69         void *closure;
  70         jit_type_t signature;
  71         jit_type_t params[1];
  72 } PSI_LibjitData;
  73
  74 static inline PSI_LibjitData *PSI_LibjitDataAlloc(PSI_LibjitContext *context, impl *impl) {
  75         size_t i, c = impl->decl->args->count;
  76         PSI_LibjitData *data = malloc(sizeof(*data) + (c ? c-1 : c) * sizeof(jit_type_t));
  77
  78         data->context = context;
  79         data->impl = impl;
  80         data->arginfo = psi_internal_arginfo(impl);
  81         for (i = 0; i < c; ++i) {
  82                 data->params[i] = psi_jit_decl_arg_type(impl->decl->args->args[i]);
  83         }
  84
  85         data->signature = jit_type_create_signature(
  86                 psi_jit_abi(data->impl->decl->abi->convention),
  87                 psi_jit_decl_arg_type(data->impl->decl->func),
  88                 data->params,
  89                 data->impl->decl->args->count,
  90                 1);
  91         data->closure = jit_closure_create(context->jit, context->signature, &psi_jit_handler, data);
  92
  93         context->data.list = realloc(context->data.list, ++context->data.count * sizeof(*context->data.list));
  94         context->data.list[context->data.count-1] = data;
  95
  96         return data;
  97 }
  98
  99 static inline void PSI_LibjitDataFree(PSI_LibjitData *data) {
 100         free(data->arginfo);
 101         jit_type_free(data->signature);
 102         free(data);
 103 }
 104
 105 static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
 106         jit_type_t params[] = {
 107                 jit_type_void_ptr,
 108                 jit_type_void_ptr
 109         };
 110
 111         if (!L) {
 112                 L = malloc(sizeof(*L));
 113         }
 114         memset(L, 0, sizeof(*L));
 115
 116         L->jit = jit_context_create();
 117         L->signature = jit_type_create_signature(jit_abi_cdecl, jit_type_void, params, 2, 1);
 118
 119         return L;
 120 }
 121
 122 static inline void PSI_LibjitContextDtor(PSI_LibjitContext *L) {
 123         size_t i;
 124
 125         for (i = 0; i < L->data.count; ++i) {
 126                 PSI_LibjitDataFree(L->data.list[i]);
 127         }
 128         if (L->data.list) {
 129                 free(L->data.list);
 130         }
 131         jit_type_free(L->signature);
 132         jit_context_destroy(L->jit);
 133 }
 134
 135 static inline void PSI_LibjitContextFree(PSI_LibjitContext **L) {
 136         if (*L) {
 137                 PSI_LibjitContextDtor(*L);
 138                 free(*L);
 139                 *L = NULL;
 140         }
 141 }
 142
 143 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data)
 144 {
 145         PSI_LibjitData *data = _data;
 146         size_t i;
 147         void **arg_prm = NULL;
 148         impl_val ret_val;
 149
 150         if (SUCCESS != psi_parse_args(*(zend_execute_data **)_args[0], data->impl)) {
 151                 return;
 152         }
 153
 154         if (data->impl->decl->args->count) {
 155                 arg_prm = malloc(data->impl->decl->args->count * sizeof(*arg_prm));
 156
 157                 for (i = 0; i < data->impl->decl->args->count; ++i) {
 158                         decl_arg *darg = data->impl->decl->args->args[i];
 159
 160                         arg_prm[i] = psi_do_let(darg);
 161                 }
 162         }
 163
 164         jit_apply(data->signature, data->impl->decl->dlptr, arg_prm, data->impl->decl->args->count, &ret_val);
 165
 166         psi_do_return(*(zval **)_args[1], data->impl->stmts->ret.list[0], &ret_val);
 167
 168         for (i = 0; i < data->impl->stmts->set.count; ++i) {
 169                 set_stmt *set = data->impl->stmts->set.list[i];
 170
 171                 if (set->arg->_zv) {
 172                         psi_do_set(set->arg->_zv, set->val);
 173                 }
 174         }
 175
 176         for (i = 0; i < data->impl->stmts->fre.count; ++i) {
 177                 free_stmt *fre = data->impl->stmts->fre.list[i];
 178
 179                 psi_do_free(fre);
 180         }
 181
 182         psi_do_clean(data->impl);
 183
 184         if (arg_prm) {
 185                 free(arg_prm);
 186         }
 187 }
 188
 189 static void psi_jit_init(PSI_Context *C)
 190 {
 191         C->context = PSI_LibjitContextInit(NULL);
 192 }
 193
 194 static void psi_jit_dtor(PSI_Context *C)
 195 {
 196         PSI_LibjitContextFree((void *) &C->context);
 197 }
 198
 199 static zend_function_entry *psi_jit_compile(PSI_Context *C)
 200 {
 201         size_t i, j = 0;
 202         zend_function_entry *zfe;
 203         PSI_LibjitContext *ctx = C->context;
 204
 205         if (!C->impls) {
 206                 return NULL;
 207         }
 208
 209         zfe = calloc(C->impls->count + 1, sizeof(*zfe));
 210         jit_context_build_start(ctx->jit);
 211
 212         for (i = 0; i < C->impls->count; ++i) {
 213                 zend_function_entry *zf = &zfe[j];
 214                 PSI_LibjitData *data;
 215
 216                 if (!C->impls->list[i]->decl) {
 217                         continue;
 218                 }
 219
 220                 data = PSI_LibjitDataAlloc(ctx, C->impls->list[i]);
 221                 zf->fname = C->impls->list[i]->func->name + (C->impls->list[i]->func->name[0] == '\\');
 222                 zf->num_args = C->impls->list[i]->func->args->count;
 223                 zf->handler = data->closure;
 224                 zf->arg_info = data->arginfo;
 225                 ++j;
 226         }
 227
 228         jit_context_build_end(ctx->jit);
 229
 230         return zfe;
 231 }
 232
 233 static void psi_jit_call(PSI_Context *C, impl_val *ret_val, decl *decl, impl_val **args) {
 234         jit_type_t signature, *types;
 235         void **argps;
 236         size_t i;
 237
 238         /* FIXME: cache in decl */
 239
 240         types = calloc(decl->args->count + 1, sizeof(*types));
 241         argps = calloc(decl->args->count + 1, sizeof(*argps));
 242         for (i = 0; i < decl->args->count; ++i) {
 243                 decl_arg *darg = decl->args->args[i];
 244
 245                 types[i] = psi_jit_decl_arg_type(darg);
 246                 argps[i] = args[i];
 247         }
 248
 249         signature = jit_type_create_signature(
 250                         psi_jit_abi(decl->abi->convention),
 251                         psi_jit_decl_arg_type(decl->func),
 252                         types, decl->args->count, 1);
 253         jit_apply(signature, decl->dlptr, argps, decl->args->count, ret_val);
 254
 255         jit_type_free(signature);
 256         free(types);
 257         free(argps);
 258
 259 }
 260
 261 static PSI_ContextOps ops = {
 262         psi_jit_init,
 263         psi_jit_dtor,
 264         psi_jit_compile,
 265         psi_jit_call,
 266 };
 267
 268 PSI_ContextOps *PSI_Libjit(void)
 269 {
 270         return &ops;
 271 }